Patent Grant
9661964
The specification relates to hand carryable surface cleaning apparatus. In a preferred embodiment, the hand carryable surface cleaning apparatus comprises a portable surface cleaning apparatus, such as a hand vacuum cleaner or a pod.
The following is not an admission that anything discussed below is part of the prior art or part of the common general knowledge of a person skilled in the art.
Various types of surface cleaning apparatus are known. Surface cleaning apparatus include vacuum cleaners. Currently, a vacuum cleaner typically uses at least one cyclonic cleaning stage. More recently, cyclonic hand vacuum cleaners have been developed. See for example, U.S. Pat. No. 7,931,716 and US 2010/0229328. Each of these discloses a hand vacuum cleaner which includes a cyclonic cleaning stage. U.S. Pat. No. 7,931,716 discloses a cyclonic cleaning stage utilizing two cyclonic cleaning stages wherein both cyclonic stages have cyclone axes that extend vertically. US 2010/0229328 discloses a cyclonic hand vacuum cleaner wherein the cyclone axis extends horizontally and is co-axial with the suction motor. In each of these designs, the cyclone bin assembly is removable for emptying. The cyclone bin assembly is removed together with the dirty air inlet. Accordingly, any member attached to the cyclone bin assembly, such as a cleaning tool, is removed with the cyclone bin assembly when it is desired to empty the cyclone bin assembly or the cleaning tool must first be removed In addition, hand carriable (e.g., pod style) cyclonic vacuum cleaners are also known (see U.S. Pat. No. 8,146,201). In this design, the cyclone bin is not removable from the pod vacuum cleaner.
This summary is intended to introduce the reader to the more detailed description that follows and not to limit or define any claimed or as yet unclaimed invention. One or more inventions may reside in any combination or sub-combination of the elements or process steps disclosed in any part of this document including its claims and figures.
According to one broad aspect, a portable surface cleaning apparatus (e.g., a hand vac or a pod vac) is provided wherein the cyclone bin assembly is removably mounted to a body thereof and at least partially nests within the body when mounted to the body of the portable surface cleaning apparatus. An advantage of this design is that the cyclone bin assembly may be removed without disconnecting any tool or accessory connected to the inlet of the portable surface cleaning apparatus. A further advantage is that the volume of the portable surface cleaning apparatus may be reduced by nesting the cyclone bin assembly.
In accordance with this aspect, there is provided a hand carryable surface cleaning apparatus comprising:
In some embodiments, a recess may be provided in a lower side of the body in which the cyclone bin assembly is received.
In some embodiments, an upper portion of the cyclone bin assembly may be received in the recess.
In some embodiments, the cyclone bin assembly air inlet may be provided at an upper end of the cyclone bin assembly.
In some embodiments, a cyclone bin assembly air outlet may be provided at an upper end of the cyclone bin assembly.
In some embodiments, an upper portion of the cyclone bin assembly may be received in the recess, and the body may comprise a pre-motor filter positioned above the recess.
In some embodiments, a recess may be provided in a lower side of the body in which the cyclone bin assembly is received, an upper portion of the cyclone bin assembly may be received in the recess and the cyclone bin assembly air inlet may be provided at an upper end of the cyclone bin assembly.
In some embodiments, a cyclone bin assembly air outlet may be provided at an upper end of the cyclone bin assembly.
In some embodiments, the body may comprise a pre-motor filter positioned above the recess.
In some embodiments, the body may comprise a conduit extending from the dirty air inlet to a conduit air outlet and the conduit may extend linearly.
In some embodiments, the body may comprise a conduit extending from the dirty air inlet to a conduit air outlet and the conduit air outlet may extend at an angle to a direction of airflow through the conduit and the cyclone bin assembly air inlet may extend in a mating angle.
In some embodiments, the body has a carry handle and the carry handle may remain with the body when the cyclone bin assembly is removed.
According to another broad aspect, a portable surface cleaning apparatus (e.g., a hand vac or a pod vac) is provided wherein the cyclone bin assembly is removably mounted to a lower side of the body thereof. An advantage of this design is that the cyclone bin assembly may be removable while the cyclone chamber is located above the dirt collection chamber. The cyclone bin assembly is preferably removable as a sealed unit other than the air inlet and air outlet of the cyclone bin assembly.
In accordance with this aspect, there is provided, a hand carryable surface cleaning apparatus comprising:
In some embodiments, a cyclone bin assembly air outlet may be provided at an upper end of the cyclone bin assembly.
In some embodiments, the cyclone bin assembly may be removable as a sealed unit other than the cyclone bin assembly air inlet and the cyclone bin assembly air outlet.
In some embodiments, the body may comprise a pre-motor filter positioned above the cyclone bin assembly.
In some embodiments, the body may comprise a conduit extending from the dirty air inlet to a conduit air outlet and the conduit air outlet may extend at an angle to a direction of airflow through the conduit outlet and the cyclone bin assembly air inlet may extend in a mating angle.
In some embodiments, the body has a carry handle and the carry handle may remain with the body when the cyclone bin assembly is removed.
According to another broad aspect, a portable surface cleaning apparatus (e.g., a hand vac or a pod vac) is provided wherein the cyclone bin assembly is removably mounted to the body thereof as a sealed unit other than the air inlet and air outlet of the cyclone bin assembly. An advantage of this design is that the dirt collection chamber is closed when removed for emptying thereby avoiding spillage of collected dirt as the dirt collection chamber is moved to a garbage can or the like for emptying.
In accordance with this aspect, there is provided a hand carryable surface cleaning apparatus comprising:
In some embodiments, an upper portion of the cyclone bin assembly may be received in a cavity of the body.
It will be appreciated by a person skilled in the art that a surface cleaning apparatus may embody any one or more of the features contained herein and that the features may be used in any particular combination or sub-combination.
The drawings included herewith are for illustrating various examples of articles, methods, and apparatuses of the teaching of the present specification and are not intended to limit the scope of what is taught in any way.
Numerous embodiments are described in this application, and are presented for illustrative purposes only. The described embodiments are not intended to be limiting in any sense. No embodiment described below limits any claimed apparatus or method and any claimed apparatus or method may cover methods or apparatuses that differ from those described herein. Those skilled in the art will recognize that any of the embodiments may be practiced with modification and alteration without departing from the teachings disclosed herein. Although particular features of the present invention may be described with reference to one or more particular embodiments or figures, it should be understood that such features are not limited to usage in the one or more particular embodiments or figures with reference to which they are described. Any embodiment described below that is not claimed in this document may be the subject matter of another protective instrument, for example, a continuing patent application, and the applicants, inventors or owners do not intend to abandon, disclaim or dedicate to the public any such invention by its disclosure in this document
The terms “an embodiment,” “embodiment,” “embodiments,” “the embodiment,” “the embodiments,” “one or more embodiments,” “some embodiments,” and “one embodiment” mean “one or more (but not all) embodiments of the present invention(s),” unless expressly specified otherwise.
The terms “including,” “comprising” and variations thereof mean “including but not limited to,” unless expressly specified otherwise. A listing of items does not imply that any or all of the items are mutually exclusive, unless expressly specified otherwise. The terms “a,” “an” and “the” mean “one or more,” unless expressly specified otherwise.
Referring to
The surface cleaning apparatus 100 comprises a main body 108 having a handle 112, a dirty air inlet 116, a clean air outlet 120 (see for example
Referring again to
In the illustrated embodiment, main body 108 includes an electrical coupling in the form of a female socket member 140 positioned proximate conduit 128 for receiving a corresponding male prong member of a hose, cleaning tool and/or accessory that is connected to inlet end 124. Providing the female socket 140 on the electrified side of the electrical coupling may help prevent a user from inadvertently contacting the electrical contacts. In other embodiments, socket member 140 may include male connectors. In such a case, it is preferred that the male connectors are de-energized when exposed (i.e., when they are not plugged into a female connector). It will be appreciated that any other electrical connector may be provided. For example, main body may have a socket for receiving a plug that is connected, e.g., by a wire, to an electrically operable accessory.
The air flow path extends from dirty air inlet 116 through an air treatment member. The air treatment member may be any suitable member that can treat the air in a desired manner, including, for example, removing dirt particles and debris from the air. In the illustrated example, the air treatment member includes a cyclone bin assembly 144. Alternatively, the air treatment member can comprise a bag, a filter, an additional cyclonic cleaning stage and/or other air treating known in the art. In the illustrated embodiment, the cyclone bin assembly 144 is removably mounted to main body 108 of surface cleaning apparatus 100. A suction motor 148 (see
Cyclone Bin Assembly
The following is a description of a cyclone bin assembly that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein. The cyclone bin assembly comprises a cyclone chamber wherein entrained particulate matter is separated from an incoming dirty air stream. Separated particulate matter may be stored in a dirt collection chamber. As is known in the art, the dirt collection chamber may be provided as part of the cyclone chamber (e.g., a lower portion of the cyclone chamber) and/or in a separate dirt collection chamber that is in communication with a cyclone chamber via a dirt outlet (e.g., it may surround all or a portion of the cyclone chamber or be positioned below a cyclone chamber and separated therefrom other than the cyclone chamber dirt outlet)
Referring to
The dirt collection chamber 160 may be emptyable by any means known in the art. For example, the dirt collection chamber may be removable by itself or as part of the cyclone bin assembly. In such a case, the dirt collection chamber may be emptyable by inverting the dirt collection chamber (e.g., inverting a cyclone bin assembly having an open upper end). Alternately or in addition, the dirt collection chamber may be openable concurrently with the cyclone chamber 156 or alternately by itself.
As exemplified, the second dirt collection chamber end wall 172 is moveably (e.g., pivotally) connected to e.g., the dirt collection chamber sidewall 164, for example using hinge 176. In this configuration, the second end wall 172 of dirt collection chamber 160 functions as an openable door to empty the dirt collection chamber 160 and can be opened as shown in
In some embodiments, end wall 172 may include a stand 174 for supporting surface cleaning apparatus 100 in an upright position.
In the embodiment shown, the cyclone chamber 156 extends along a cyclone axis 184 and is bounded by a sidewall 186. The cyclone chamber 156 includes an air inlet 188 and an air outlet 192, and a dirt outlet 196 in communication with the dirt collection chamber 160. The air inlet 188, air outlet 192 and dirt outlet 196 may be of any design known in the art. Preferably, the air inlet 188 is generally tangentially oriented relative to the sidewall 186, so that air entering the cyclone chamber 156 will tend to swirl and circulate within the cyclone chamber 156, thereby dis-entraining dirt and debris from the air flow, before leaving the chamber via the air outlet 192. The air inlet 188 extends along an inlet axis 200 that may differ from the cyclone axis 184 by an angle 204. For example, axis 200 of air inlet 188 may be perpendicular to cyclone axis 184.
In the illustrated example, the cyclone air outlet 192 comprises a conduit member or vortex finder 208. Optionally, a screen 212 can be positioned over the vortex finder 208 to help filter lint, fluff and other elongate debris. Preferably, the screen 212 can be removable. Optionally, the screen 212 can be tapered such that the distal, inner or free end 216 of the screen 212 has a smaller diameter 220 than the diameter 224 at the base 228 of the screen 212 and/or the air outlet 192.
In the example illustrated the cyclone chamber 156 is arranged in a generally vertical, inverted cyclone configuration. In this configuration, the air inlet 188 and the air outlet 192 are provided at an upper end of the cyclone chamber 156 and the dirt outlet is at the lower end. However, alternate configurations may be used.
The dirt outlet from the cyclone chamber may be any dirt outlet known in the art, such as one or more slot outlets or an annular gap between an end wall of the cyclone chamber and a spaced apart facing wall. As exemplified, an end wall, deflector or arrestor plate 232 is positioned at the dirt outlet end or lower end of the cyclone chamber 156. The arrestor plate 232 may be of any size and configuration and may be sized to cover substantially all of the lower end of the cyclone chamber 156. As exemplified, the plate 232 abuts the lower end of the cyclone sidewall 186 to form a lower end wall of the cyclone chamber 156. When the arrestor plate 232 abuts the lower ends of the sidewall 186 it helps define the gap or slot that forms the dirt outlet 196. In this configuration, the dirt outlet slot 196 is bounded on three sides by the cyclone chamber sidewall 186 and on a fourth side by the arrestor plate 232. Alternatively, plate 232 may be spaced from sidewall 186 of the cyclone chamber such that the dirt outlet slot 196 may be a continuous gap that extends between the sidewall 186 and the arrestor plate 232. In the illustrated example the dirt outlet 196 is vertically spaced apart from the air inlet 188 and air outlet 192, and dirt outlet 196 is positioned at the opposite, lower end of the cyclone chamber 156.
In the illustrated embodiment, the arrestor plate 232 forms the bottom of the cyclone chamber 156 and may be of any suitable configuration known in the art. Optionally the arrestor plate 232 may be fixed in its position adjacent the sidewall 186 or in a fixed spaced relation, or it may be moveable or openable. Providing an openable arrestor plate 232 may help facilitate emptying of the cyclone chamber 156.
Optionally, as exemplified herein, the arrestor plate 232 may be openable concurrently with another portion of the surface cleaning apparatus, including, for example, the dirt collection chamber 160. For example, in the illustrated embodiment, the arrestor plate 232 is mounted to and supported spaced from the openable wall 172 of the dirt collection chamber by a support member 234. The support member 234 may be of any suitable configuration and may be formed from any suitable material that is capable of supporting the arrestor plate 232 and resisting stresses exerted on the arrestor plate 232 by the air flow in the cyclone chamber or dirt particles exiting the cyclone chamber 156. In this configuration, the arrestor plate 232 is openable concurrently with the end wall 172, so that opening the end wall 172 simultaneously opens the dirt collection chamber 160 and the cyclone chamber 156 (see
Nesting of the Cyclone Bin Assembly
The following is a description of nesting of the cyclone bin assembly that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein. In accordance with this aspect, cyclone bin assembly 144 may be detached without having to disconnect an accessory or wand from the cyclone bin assembly and, if an electrified cleaning tool is used, without having to disconnect an electrical cord from the cyclone bin assembly. This may permit cyclone bin assembly 144 to be quickly and easily removed, emptied, and replaced, and for cleaning with apparatus 100 to resume. Accordingly, the portion of the cyclone bin assembly that includes the air inlet to the cyclone bin assembly (e.g., the cyclone air inlet) may be nested inside the main body. An advantage of this design is that a wand, cleaning tool or the like may be attached to an inlet conduit on the main body and the cyclone bin assembly is removable as a sealed unit without having to disconnect a wand, cleaning tool of the like from the air inlet to the cyclone bin assembly. Accordingly, detaching cyclone bin assembly 144 does not require any additional reconfiguration of surface cleaning apparatus 100.
Cyclone bin assembly 144 may be removably mounted to main body 108 so as to at least partially nest inside main body 108 in any suitable fashion. For example, a portion of main housing 108 may have a cavity or recess having an open end through which the cyclone bin assembly is inserted. The cyclone bin assembly may be receivable by travel along a linear or an arcuate path. Accordingly, the main body may have a cavity having an open side (e.g., an open lower end) in which a portion (e.g., the portion having the air inlet) of the cyclone bin assembly is removably receivable. The cyclone bin assembly may slide into the cavity and be secured therein by a mechanical restraining member, e.g., a snap fit, male and female engagement members, a securing arm or the like.
In accordance with this embodiment, cyclone bin assembly 144 may be releasably secured to main body 108 in any suitable fashion. For example, cyclone bin assembly 144 and/or main body 108 may include a locking mechanism including one or more of a latch, snap, hook and loop fastener, zipper, magnet, friction fit, bayonet mount, or any other suitable locking member.
The open end of the cavity may be any side of main body. The portion of the cyclone bin assembly that is inserted preferably has the air inlet to the cyclone bin assembly and the air outlet from the cyclone bin assembly. Therefore, for example, the cyclone air inlet and the cyclone air outlet may be at the same end (e.g., an upper end) of the cyclone bin assembly. Accordingly, the open end is positioned so as to receive, and optionally slidably receive, the portion of the cyclone bin assembly that has the air inlet to the cyclone bin assembly and the air outlet from the cyclone bin assembly. Accordingly, if the air inlet to the cyclone bin assembly and the air outlet from the cyclone bin assembly are provided at an upper end of the cyclone bin assembly, the open end is provided at a lower end of the main body. If the open end is provided at a front end of the main body, the cyclone bin assembly may be insertable by positioning the upper end of the cyclone bin assembly at the open end and rotating the cyclone bin assembly rearwardly so that the lower end of the cyclone bin assembly travels along an arc.
An advantage of this design is that it may provide surface cleaning apparatus 100 with a comparatively reduced size relative to the volume of cyclone bin assembly 144 while permitting the cyclone bin assembly to be removed for emptying without disconnecting a cleaning tool from inlet end 124.
For example, as exemplified in
In alternative embodiments, more or less of cyclone bin assembly 144 may be nested inside main body 108 when cyclone bin assembly 144 is mounted to main body 108. For example, recess 240 may be sized to receive most or all of cyclone bin assembly 144. It will be appreciated that if a substantial portion of the cyclone chamber and/or the dirt collection chamber are positioned inside main body 108, then portions of the main body may be transparent so that a user may see the air circulate in the cyclone chamber and/or the level of dirt in the dirt collection chamber.
As exemplified in
In the illustrated example, a conduit 128 extends linearly from dirty air inlet 116 rearwardly to define an airflow path from dirty air inlet 116 to conduit air outlet 328. Therefore, when cyclone bin assembly 144 is mounted to main body 108, cyclone chamber air inlet 188 is brought into contact with conduit air outlet 328. Preferably, cyclone chamber inlet 188 and conduit air outlet 328 form a substantially air tight connection. This may mitigate the escape of dirty air, e.g. into recess 240 of main body 108, and a consequent loss of suction. For example, cyclone chamber inlet 188 may be urged into firm contact with conduit air outlet 328 when cyclone bin assembly 144 is mounted to main body 108. Optionally, one or both of conduit air outlet 328 and cyclone chamber inlet 188 may include a sealing member 332 (e.g. a gasket or an O-ring) which may be compressed between conduit air outlet 328 and cyclone chamber inlet 188 to enhance the air-tight characteristic of the connection.
Optionally, the interface between cyclone chamber inlet 188 and conduit air outlet 328 may be at a (non-zero) angle to the direction 336 of insertion of cyclone bin assembly 144 into main body 108. This may enhance the reciprocal force applied by cyclone chamber air inlet 188 to conduit air outlet 328. In turn, this may enhance the air-tight character of the connection between cyclone chamber air inlet 188 and conduit air outlet 328. In the illustrated example, conduit air outlet 328 extends at a (non-zero) angle 340 to the direction 344 of airflow through conduit 128. Further, cyclone chamber air inlet 188 is shown extending at a mating angle 204.
Preferably, cyclone chamber air outlet 192 is fluidly coupled to the downstream airflow path as cyclone bin assembly 144 is mounted to main body 108. For example, main body 108 may include an air inlet that mates with cyclone chamber air outlet 192. In the illustrated example, upper wall 244 of recess 240 includes an air inlet 348. Recess air inlet 348 may be positioned and aligned to form a fluid connection with cyclone chamber air outlet 192 as cyclone bin assembly 144 is mounted to main body 108. In the example shown, both of cyclone chamber air outlet 192 and recess air inlet 348 extend vertically in the direction 336 of insertion.
Preferably, recess air inlet 348 and cyclone chamber air outlet 192 form a substantially air tight connection. This may mitigate an escape of air, and corresponding loss of suction at dirty air inlet 116. For example, mounting cyclone bin assembly 144 with main body 108 may urge cyclone chamber outlet 192 into firm contact with recess air inlet 348. Optionally, one or both of recess air inlet 348 and cyclone chamber outlet 192 may include a sealing member (e.g. a gasket or an O-ring) which may be compressed between recess air inlet 348 and cyclone chamber outlet 192 to enhance the air-tight characteristic of the connection.
Accordingly, as the cyclone bin assembly is inserted into the recess, an air flow connection is made with both the outlet of conduit 128 and the inlet to the main body. Accordingly, as exemplified in
It will be appreciated that dirt collection chamber 160 may be emptyable while cyclone bin assembly 144 is mounted to main body 108 as well as when removed therefrom. This may permit a user to empty dirt collection chamber 160 without detaching cyclone bin assembly 144 from main body 108. For example, the release arm which retains lower wall 172 in the closed position may be accessible while cyclone bin assembly 144 is nested inside main body 108. In the illustrated example, latch 180, which releasably retains lower wall 172 in the closed position, is positioned outside recess 240 when cyclone bin assembly 144 is mounted to main body 108. This may permit a user to actuate latch 180 to release lower wall 172 and access an interior of cyclone bin assembly 144 (e.g. for emptying/cleaning) while cyclone bin assembly is mounted to main body 108 (see
Preferably, as shown in
As exemplified, handle 112 may form part of main body 108 such that handle 112 remains with main body 108 when cyclone bin assembly 144 is detached. A user may grasp handle 112 while pulling on cyclone bin assembly 144, which may make separating cyclone bin assembly 144 from main body 108 easier.
It will be appreciated that any mounting structure may be used with other aspects of this disclosure.
Cyclone Bin Assembly Locking Mechanism
The following is a description of a locking mechanism for releasably securing a cyclone bin assembly that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, the locking mechanism includes a lock release actuator provided on the cyclone bin assembly. An advantage of this design is that the user may use the same hand to hold the cyclone bin assembly and actuate the lock release actuator, while using their other hand to hold the main body (e.g. by its handle). Thus, the user may simultaneously release and remove the cyclone bin assembly from the main body. It will be appreciated that, in accordance with this aspect, the lock release actuator may provide a structure suitable for a user to hold the cyclone bin assembly when removed from main body 108. For example, the lock release actuator may comprise two members provided on opposed sides of the cyclone bin assembly. It will be appreciated that, in one embodiment, the cyclone bin assembly may be as exemplified herein and may be removed as a sealed unit other than the air inlet and outlet. In other embodiments, the cyclone bin assembly may be removable is an open configuration (e.g., the cyclone bin assembly which is removed may have an open top) or only the dirt collection chamber may be removable. If only the dirt collection chamber is removable, it is preferably removable as a sealed unit other than the dirt inlet. However, in another embodiment, it may be removed with, e.g., an open top.
The cyclone bin assembly 144 may be releasably secured to main body 108 in any suitable fashion which enables the release actuator to be provided on the cyclone bin assembly 144. Accordingly, a locking mechanism 272 is provided which has an actuator on the cyclone bin assembly and a member to secure cyclone bin assembly 144 to main body 108. Alternately, if only the dirt collection chamber is removable, then the actuator may be provided on the dirt collection chamber and the member may secure the dirt collection chamber to the main body and/or the cyclone chamber. In some embodiments, the member may be part of the actuator or a separate part that is drivenly connected to the actuator.
As exemplified in
As exemplified, locking mechanism 272 comprising two actuators 276 each of which is drivingly connected to a movable engagement member such as a release arm 280. Actuators 276 are operable to move the engagement members into and optionally out of engagement with main body 108 to selectively place locking mechanism 272 in the locked and unlocked positions. The movable engagement members are movable into engagement with main body 108 for securing cyclone bin assembly 144 to main body 108 in the locked position of locking mechanism 272, and movable to disengage from main body 108 for releasing cyclone bin assembly 144 from main body 108 in the unlocked position of locking mechanism 272. Accordingly, actuator may have a first portion that is operated, e.g., pressed, by a user and a second portion that engages release arm 280 and release arm 280 may have a first portion that is driven by the second portion of the actuator and a second portion that engages or lock to the main body 108.
It will be appreciated that locking mechanism 272 may include one or more actuators and a similar number of release arms 280. It will also be appreciated that one or both of the actuators and the engagements members may be biased into the locked position. For example, actuator 276 may be biased to the locked position and may be drivingly connected to release arm 180 to move release arm into both the locked and the unlocked position. Alternately, or in addition, release arm 280 may be biased to the locked position and may be drivingly connected to actuator 276 to move actuator 276 into both the locked and the unlocked position
The actuators of locking mechanism 272 may be positioned at any suitable location or locations on cyclone bin assembly 144. For example, each of the actuators 276 may be positioned on cyclone chamber 156 or dirt collection chamber 160. In some cases, it may be convenient to locate actuators 276 on a bottom of cyclone bin assembly 144. This may permit a user to easily grasp actuators 276 from beneath cyclone bin assembly 144 while cyclone bin assembly 144 is nested in main body 108.
In the illustrated example, locking mechanism 272 includes two actuators 276. As shown, actuators 276 are positioned on lower wall 172 of the dirt collection chamber 160 on opposed left and right sides of cyclone bin assembly 144. This configuration may permit a user to grasp and operate both actuators 276 simultaneously from below cyclone bin assembly 144. For example, the user may place their thumb on one actuator 276 and their other fingers on the second actuator 276 with their palm face up, and then squeeze the two actuators toward each other to operate the actuators 276 and thereby move the engagement members out of engagement with main body 108 and unlock locking mechanism 272. The user may rely upon the grip on cyclone bin assembly 144 developed from squeezing actuators 276 together to withdraw cyclone bin assembly 144 from main body 108.
Release arms 280 are provided on opposed left and right sides of cyclone bin assembly 144 (e.g., release arms 280 may be mounted on the sidewalls 164 of dirt collection chamber 160) and are positioned and configured so as to be engaged by actuator 276. Further, release arms may be located internal of main body 108 when the cyclone bin assembly is mounted to the main body and therefore release arms 280 may be protected from damage or accidental operation such as by being hit against a piece of furniture during use. As exemplified, a portion of the dirt collection chamber is positioned interior of the main body when the cyclone bin assembly is mounted to the main body. Accordingly, release arms 280 may be provided on the dirt collection chamber at a location that will result in release arms being covered by a protective wall when the cyclone bin assembly is mounted to the main body.
Each release arm 280 includes an engagement member (e.g., an outward protrusion 284 on an outer surface 288 thereof) suitable for releasable engagement with main body 108 in the locked position of locking mechanism 272. If the engagement member of release arm 280 is located internal of main body 108, then the mating engagement member on main body 108 may also be positioned internal of main body 108. As exemplified, main body 108 includes a mating engagement member (e.g., an inward protrusion 292 on an inner surface 294 of main body 108) for engagement with the locking mechanism engagement member. Outward protrusion 284 and inward protrusion (e.g. lip) 292 are examples of engagement members. Other examples of suitable engagement members include oppositely charged magnets, hook and loop fasteners, and mating male/female snap components.
It will be appreciated that the mating engagement member on main body 108 may be provided on any suitable inner surface of main body 108. For example, an engagement member may be provided on an inner surface of recess 240. In the illustrated example, recess 240 further includes a rear portion 308 for receiving a further portion of cyclone bin assembly 144. As shown, recess rear portion 308 is defined at least in part by sidewalls 310, upper wall 312, and rear wall 314. A forward end 316 of rear portion 308 is preferably contiguous with the front portion of recess 240. As illustrated, forward end 316 of rear portion 308 is coincident with rear wall 252 of the forward portion of recess 240. In the example shown, protrusions 292 extend inwardly from an inner surface 294 of each sidewall 310.
Each release arm 280 may have any suitable configuration that permits it to move from a locked position in which the release arm engagement member may engage with main body 108, and an unlocked position in which the release arm engagement member is disengaged from main body 108. In the illustrated example, release arms are located inside main body 108 when cyclone bin assembly 144 is mounted thereto. Accordingly, release arms 280 are movable in a manner that permits outward protrusion 284 to move outwardly into engagement with main body 108 to a locked position (see
Each release arm 280 may be mounted to cyclone bin assembly 144 in any suitable manner to permit the corresponding engagement member to move between the locked and unlocked positions. In the illustrated example, release arms 280 are pivotally mounted to cyclone bin assembly 144 for pivoting between the unlocked and locked positions. As shown, each release arm 280 can pivot about an axis of rotation 298 between the unlocked and locked positions. Protrusions 284 move outwardly to engage with main body 108 when release arms 280 pivot in one direction, and move inwardly to disengage from main body 108 when release arms pivot 280 pivot in the other direction. In alternative embodiments, a release arm 280 may be, e.g., slideably mounted to cyclone bin assembly 144 for translating between the unlocked and locked positions.
In the illustrated example, each release arm 280 extends between a drive end 300 and a body engagement end 302, and the pivot mount is located between the body engagement and drive ends 300 and 302. Preferably, one or more of release arms 280 are biased to the locked position using a biasing member. For example, a biasing member such as a linear or torsional spring (not shown) may act upon a release arm 280 to rotate the release arm 280 toward the locked position. As shown, in the locked position, body engagement end 302 of release arm 280 may contact dirt collection chamber 160 which may inhibit further rotation about axis 298 in that direction.
Preferably, each actuator 276 is drivingly connected to a corresponding release arm 280 for moving the release arm 280 to the unlocked position. For example, each actuator 276 may be drivingly connected to, e.g., in contact with, the drive end 300 of a corresponding release arm 280, and inwardly movable for urging the drive end 300 to move inwardly toward the unlocked position. In the illustrated example, each actuator 276 includes a drive end 304 positioned in overlapping relation to a release arm drive end 300, and inwardly movable for driving the drive end 300 toward the unlocked position. As shown, actuator drive end 304 is positioned outboard of release arm drive end 300, such that moving the actuator drive end 304 inward (e.g. by squeezing actuators 276 together) pushes release arm drive ends 300 inwardly (which disengages release arm protrusions 284 from main body 108).
Each actuator 276 may be movable in any manner suitable for driving release arms 280 into the unlocked and/or locked positions. Preferably, actuators 276 are hand-operable. In the illustrated example, each actuator 276 is pivotally mounted to cyclone bin assembly 144. As shown, each actuator 276 is rotatable about an axis 306 at a pivot end 305 opposite drive end 304. In use a user may drive a release arm 280 to the unlocked position by applying force between pivot and drive ends 304 and 305 of the corresponding actuator 276 to pivot the actuator 276 and its drive end 304 inwardly.
Preferably, actuators 276 are biased toward the locked position (in this case outwardly). For example, a biasing member such as a spring, may act upon each actuator 276 so that the actuator 276 is normally in the locked position. This may permit actuators 276 to return to the locked position when the user releases the actuators 276 (e.g. after replacing cyclone bin assembly 144 inside main body 108).
Preferably, at least a portion of each actuator 276 is accessible while cyclone bin assembly 144 is secured to main body 108 by locking mechanism 272. For example, at least a portion of each actuator 276 may be positioned outside of recess 240. In the illustrated example, a bottom end 318 of sidewalls 310 of recess 240 is positioned above actuators 276 so that actuators 276 are positioned outside of recess 240 and are accessible while cyclone bin assembly 144 is secured to main body 108.
Preferably, a user may manipulate actuators 276 on cyclone bin assembly 144 with one hand to disengage and detach cyclone bin assembly 144, while grasping main body 108, e.g. by handle 112, with their other hand. This may permit cyclone bin assembly 144 to be detached from main body 108 simply and quickly. In the illustrated example, cyclone bin assembly 144 includes two actuators 276 positioned on opposite sides of cyclone bin assembly 144. Optionally, actuators 276 may include a gripping portion 320 to direct users where to apply pressure to activate the actuator 276. In use, the user may position their thumb on the gripping portion 320 of one actuator 276 and their other fingers on the gripping portion 320 of the other actuator 276, and then squeeze to rotate both actuators 276 inwardly and thereby move the locking mechanism 272 to the unlocked position. Afterward, the user may rely upon the grip obtained by squeezing actuators 276 to withdraw dirt collection chamber 160 from main body 108, while continuing to grasp main body 108 with their other hand.
Preferably, all moving parts of locking mechanism 272 are positioned on cyclone bin assembly 144. In the illustrated example, inward protrusion 292 is the only component of locking mechanism 272 that is not positioned on cyclone bin assembly 144, and it is preferably a static, non-movable element.
The dirt collection chamber 160 is preferably openable for emptying cyclone bin assembly 144 while cyclone bin assembly 144 remains secured to main body 108. Accordingly, as exemplified in
In this embodiment, outward protrusion 284 remains engaged with main body 108 when lower wall 172 is opened. It will be appreciated that since actuators 276 have been moved out of driving engagement with release arms 280 and that since release arms 280 are located interior of main body 108, this mitigates the risk of accidentally releasing cyclone bin assembly 144 from main body 108 when lower wall 172 is open.
It will be appreciated that, in an alternate embodiment, lower wall 172 may not be openable. In another embodiment, actuator 276 may be provided above lower openable wall 172. In any such embodiment, actuator 276 may be provided with the member that engages main body 108. For example, protrusion 284 may be provided on actuator 276 or actuator 276 and release arm 280 may be a unitary construction (e.g., they may be integrally molded together.
It will be appreciated that any locking mechanism may be used with other aspects of this disclosure.
Pre-Motor Filter
Optionally, one or more pre-motor filters may be placed in the air flow path between the cyclone bin assembly and the suction motor. Alternatively, or in addition, one or more post-motor filters may be provided downstream from the suction motor. The following is a description of a pre-motor filter housing construction that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
Referring to
One or more filters may be positioned within the pre-motor filter chamber 352 to filter fine particles from the air stream entering recess air inlet 348, before it flows into the inlet of the suction motor 148. The filters may be of any suitable configuration and formed from any suitable materials. In the illustrated embodiment, a foam filter 368 and a downstream felt filter 372 are positioned within the pre-motor filter chamber 352. As shown, pre-motor filter chamber 352, as well as filters 368 and 372, are positioned above recess 240.
In the illustrated example, the bottom wall 356 includes a plurality of upstanding support ribs 376 to support the filters 368 and 372 positioned within the chamber 352. The support ribs 376 may hold the filters 368 and 372 above the surface of the bottom wall 356 to define a lower header or headspace 380, to allow for air to flow laterally between the bottom surface 384 of filter 372 and the bottom wall 356.
In the illustrated embodiment, the upstream side 388 of the foam filter 368 is provided facing the openable lid. Accordingly, air flows generally downwardly through the filters 368 and 372 to suction motor inlet 390. The upper cover 368 is optionally shaped so that when it is closed (
As exemplified, the pre-motor filter chamber 352, and the filters therein 368 and 372, are positioned above the cyclone chamber 156 and the suction motor. An advantage of this design is that the upstream face of the pre-motor filter may have a larger cross sectional area. A further advantage is that the pre-motor filter chamber 352 may also essentially function as an air flow passage from the cyclone to the suction motor (e.g., as exemplified, lower header 380 has an outlet leading down into the suction motor).
When surface cleaning apparatus 100 is in use, air exiting cyclone chamber air outlet 192 may flow into recess air inlet 348 and through vortex finder 396 into upstream head space 392. Within the upstream headspace 392 the air can flow laterally across the upstream surface 388 of the foam filter 368, and down through filters 368 and 372 into downstream head space 380 toward suction motor inlet 390. As shown, suction motor inlet 390 may be positioned in an upper end 428 of main body 108, and suction motor outlet 406 may be positioned in a lower end 432 of main body 108.
Position and Orientation of the Suction Motor
The following is a description of position and orientation of the suction motor that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, suction motor 148 is positioned and oriented relative to handle 112 in manner which may improve the balance of surface cleaning apparatus 100 when it is used in a hand held mode as exemplified in
In order to reduce the moment arm between the handle and the center of gravity of the suction motor, suction motor 148 may be positioned forward or rearward of handle 112 but proximate thereto so as to reduce the forward/rearward moment arm. Similarly, suction motor 148 may be positioned generally between the top and bottom of handle 112 so as to reduce the vertical moment arm. In such a configuration, the center of gravity of suction motor is between the top and bottom of handle 112.
Handle 112 has a handle axis 424. The angle of handle axis 424 may be selected to enhance the operating ergonomics of the vacuum cleaner (e.g., the handle may be oriented to so that the wrist of a user is at a desired orientation, such as a neutral orientation to the user's arm, when using the vacuum cleaner). Accordingly, while handle axis 424 may be oriented at any suitable angle to horizontal and vertical axes 408 and 412, handle axis 424 may be angled at between 5 to 45 degrees from vertical axis 412 and, more preferably, at about 30 degrees.
Handle 112 may generally extend along handle axis 424 at any suitable location on main body 108. For example, handle 112 may be mounted between upper and lower ends 428 and 432 of main body 108. In the illustrated example, handle 112 includes an upper end 436 mounted to main body upper end 428, and a lower end 440 mounted to main body lower end 432. Further, as shown, handle 112 is mounted to the rear end 444 of main body 108. In the illustrated example, motor center of gravity 420 is positioned between upper and lower end 436 and 440 of handle 112.
The angle of suction motor 148 relative to the horizontal and vertical axes 408 and 412 may be selected to position the center of gravity of suction motor 148 as close to handle 112, and optionally as close to handle 112 as possible, to thereby improve the balance of surface cleaning apparatus 100 in some modes of operation. As exemplified, motor axis 416 is approximately parallel to handle 112. Therefore, as with handle 112, motor axis 416 may be angled forwardly between 5 degrees and 45 degrees from vertical axis 412 of apparatus 100. In the illustrated example, motor axis 416 is angled forwardly approximately 30 degrees from vertical axis 412. Accordingly, handle axis 424 and motor axis 416 are parallel and angled approximately 30 degrees to vertical axis 412.
In this orientation, the distance between handle 112 and suction motor 148 remains generally constant. An advantage of this design is that the mass of suction motor 148 is maintained as close as possible to handle 112 as permitted by the geometry of main body 108. For example, as exemplified in
As exemplified, the center of gravity 420 of suction motor 148 is also located generally between the top and bottom of handle 112. Accordingly, the vertical moment arm is reduced. It some embodiments, it will be appreciated that part of the suction motor may extend above the top of handle 112 and/or below the bottom of handle 112. For example, if the suction motor is longer than the handle, the suction motor may be positioned along handle 112 such that the center of gravity is between the top and bottom of handle 112 and preferable such that the center of gravity 420 of suction motor 148 is located proximate a midpoint of handle 112 between the top and bottom of handle 112.
In the exemplified embodiment, it will also be appreciated that the center of gravity 420 of suction motor 148 is also located below the upper end 256 of cyclone bin assembly 144.
In other embodiments, it will be appreciated that suction motor 148 may be oriented inside main body 108 at any angle to horizontal axis 408 and vertical axis 412 of surface cleaning apparatus 100.
Clean air outlet 120 may be positioned on a lower end 432 of main body 108. For example, clean air outlet 120 may be positioned on a lower surface 448 of main body 108. In the example shown, clean air outlet 120 is positioned directly beneath handle 112.
It will be appreciated that any position and orientation of the suction motor may be used with other aspects of this disclosure.
Enhanced Dirt Collection Capacity
The following is a description of a dirt collection chamber that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, the capacity of a dirt collection chamber for a cyclone may be increased by extending the dirt collection chamber outwardly from beneath cyclone chamber 156 to occupy space generally beneath main body 108. For example, dirt collection chamber 160 may extend forwardly and/or rearwardly of cyclone chamber 156.
In accordance with this aspect, suction motor 148 may be angled. Accordingly, the vertical distance occupied by the suction motor (i.e., the vertical extent between the top and bottom of suction motor 148) is reduced and this may enable part of the dirt collection chamber to extend under suction motor 148. An advantage of this design is that enhanced dirt collection capacity may be provided with a small increase in the footprint of the vacuum cleaner 100. Accordingly, surface cleaning apparatus 100 may collect more dirt before emptying, and yet still be maneuverable and easy to handle.
Forward portion 500 is bounded by a front wall 504, a forward portion 508 of upper wall 168, and a forward portion 512 of lower wall 172, all of which is positioned forward of cyclone chamber 156. Forward portion 500 may provide additional volume to dirt collection chamber 160, and/or may permit dirt collection chamber 160 to provide the same volume with a lesser height 516. In alternative embodiments, dirt collection chamber 160 may not extend forward of cyclone chamber 156.
Rear portion 520 is bounded by a rear wall 524, a rear portion 528 of upper wall 168, and a rear portion 532 of lower wall 172. Rear portion 520 may provide additional volume to dirt collection chamber 160, and/or may permit dirt collection chamber 160 to provide the same volume with a lesser height 516. In alternative embodiments, dirt collection chamber 160 may not extend rearward of cyclone chamber 156.
Dirt collection chamber 160 may extend under at least a portion of suction motor 148. For example, suction motor 148 may be positioned rearward of cyclone chamber 156 and at least part of rear portion 520 of dirt collection chamber 160 may be positioned under at least a portion of suction motor 148. Optionally, rear portion 520 of dirt collection chamber 160 may be positioned under all of suction motor 148.
Preferably, dirt collection chamber 160 may be shaped to efficiently occupy the space available under main body 108. For example, dirt collection chamber 160 may include one or more walls shaped to generally follow the contours of one or more walls of main body 108. In some embodiments, dirt collection chamber 160 may include a recess for receiving at least a portion of the suction motor housing. In the illustrated example, rear portion 528 of upper wall 168 includes a recess 536 for receiving a lower portion of suction motor 148. More specifically, rear portion 528 of upper wall 168 has a surface 540 angled downwardly toward rear end 444 of apparatus 100 to define recess 536. Downwardly angled surface 540 may generally correspond with the downwardly angled outer surface 544 of motor housing 152. This may permit rear portion 520 of dirt collection chamber 160 to partially surround motor housing 152 to occupy the space below and around motor housing 152 for additional storage capacity.
Cyclone chamber 156 includes one or more dirt outlets in communication with the dirt collection chamber. The cyclone chamber dirt outlet may be positioned to preferentially direct dirt toward the furthest wall of dirt collection chamber 160. In the illustrated example, dirt collection chamber 160 extends farther rearwardly of cyclone chamber 156 than it does forwardly of cyclone chamber 156 and dirt outlet 196 is positioned in a rear side of cyclone chamber sidewall 186. In use, dirt may be propelled rearwardly from cyclone chamber 156 through rear dirt outlet 196 to the rear portion 520 of dirt collection chamber 160.
It will be appreciated that any dirt collection chamber structure may be used with other aspects of this disclosure.
Wand Release
The following is a description of a wand release mechanism that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, a wand release is provided that may be operated by a user while cleaning using surface cleaning apparatus 100 so that a user need not shut of the surface cleaning apparatus to reconfigure the surface cleaning apparatus to, e.g., an above floor cleaning configuration. Accordingly, the wand release may be operable by a user's foot, such as by a foot pedal. The user may step on the wand release to release the wand while continuing to operate the surface cleaning apparatus 100.
As exemplified in
In the illustrated example, wand 132 includes an upper end 548 removably mounted to conduit 128, and a lower end 552 removably mounted to surface cleaning head 136. Preferably, surface cleaning head 136 includes an upstream portion 556 pivotally connected to a downstream portion 560. Surface cleaning head 136 may be any surface cleaning head known in the art. Accordingly, upstream portion 556 may include a rotatably mounted brush roll, a brush roll motor and wheels. In the illustrated example, upstream portion 556 includes a cleaning head dirty air inlet 564, and downstream portion 560 includes an air outlet 568.
In use, the surface cleaning apparatus 100 may be manipulated to selectively pivot downstream portion 560 relative to upstream portion 556 for maneuvering upstream portion 556 (and dirty air inlet 116) over a surface for cleaning. Wand 132 may also be rotatably or otherwise moveably mounted to downstream portion 560 so as to be steeringly coupled to surface cleaning head 136.
In some embodiments, surface cleaning apparatus 100 may be directly connected to surface cleaning head 136. For example, conduit 128 may directly connect to surface cleaning head 136 (see
As exemplified in
Locking mechanism 572 is reconfigurable between a locked position in which wand 132 is secured to downstream portion 560 of the surface cleaning head, and an unlocked position in which wand 132 is removable (e.g. freely removable) from downstream portion 560. Locking mechanism 572 may include one or more foot operable actuators for manually moving locking mechanism 572 from the locked position to the unlocked position, and/or vice versa. The actuator may be positioned in any suitable location on surface cleaning head 136 or wand 132. For example, the actuator may be positioned on one of the upstream or downstream portions 556 and 560 of surface cleaning head 136. In the illustrated example, actuator 576 comprises a single foot pedal positioned on downstream portion 556 of surface cleaning head 136.
Actuator 576 may directly engage wand 132 and secure wand 132 in position, Alternately, as exemplified, locking mechanism 572 may include one or more release arms 580 that are drivenly connected to actuator 576. The release arms may be positioned on one of surface cleaning head 136 and wand 132, and releasably engage the other of surface cleaning head 136 and wand 132 when locking mechanism 572 is in the locked position. For example, a release arm on surface cleaning head 136 may include an engagement member that in the locked position releasably engages an engagement member on wand 132. In the example shown, locking mechanism 572 includes one release arm 580. Release arm 580 is shown including an inward protrusion 584 on an inner surface 588 thereof that releasably engages a recess 592 on an outer surface 596 of wand lower end 596. Inward protrusion 584 and recess 592 are examples of engagement members. Other examples of engagement members include oppositely charged magnets, hook and loop fasteners, and mating male/female snap components, latches and the like.
In the illustrated example, actuator 576 includes a pedal surface 620 which extends exterior to downstream portion 560 for operation by a user's foot. In use, a user may step onto pedal surface 620 to slide actuator 576 downwardly and unlock locking mechanism 572 as described above. Alternately, actuator 576 may be a button, lever, or the like that is foot operable.
Actuator 576 may be moveably mounted to surface cleaning head 136 for movement between an unlocked position and a locked position. In the unlocked position, actuator 576 may either release control of release arm 580 (e.g. a biasing member such as a spring to move release arm 580 to the unlocked position) or urge release arm 580 into the unlocked position. Preferably, actuator 576 is biased to the locked position. For example, a biasing member such as a linear spring 626 may act upon actuator 576 to urge actuator 576 to the locked position. In the example shown, a linear spring 626 is positioned below actuator 576 for urging actuator 576 upwardly to the locked position. This may permit actuator 576 to automatically (i.e. without additional user action) return to the locked position when the user ceases to apply force (e.g. with their foot) to actuator 576.
Release arm 580 may have any suitable configuration and may be mounted to surface cleaning head 136 in any suitable manner for movement between a locked position in which the release arm engages wand 132 (e.g. when wand 132 is suitably received in surface cleaning head downstream portion 560), and an unlocked position in which the release arm 580 disengages from wand 132. In the illustrated example, inward protrusion 584 of release arm 580 is inwardly movable to a locked position, and outwardly movable to an unlocked position. In the illustrated example, release arm 580 is pivotally mounted to surface cleaning head 136 for pivoting about an axis of rotation 600 between the unlocked and locked positions.
As exemplified, release arm 580 includes a body engagement end 604 and a drive end 608. Body engagement end 604 includes inward protrusion 584. Release arm 580 is pivotally mounted to surface cleaning head 136 between body engagement and drive ends 604 and 608. Actuator 576 is drivingly connected to the drive end 608 of release arm 580 for moving the release arm 580 to the unlocked position. In the illustrated example, actuator 576 includes an engagement surface 612 and drive end 608 of release arm 580 includes an angled engagement surface 616. Surfaces 612 and 616 are aligned such that when actuator 576 moves downwardly, actuator engagement surface 612 cams against drive end engagement surface 616 which urges drive end 608 to move inwardly. This pivots release arm 580 moving release arm 580 outwardly to the unlocked position.
Preferably, release arm 580 is biased to the locked position. For example, a biasing member such as a linear spring 624 or a torsional spring may act upon release arm 580 to rotate the release arm 580 toward the locked position. In the example shown, a linear spring 624 is positioned to urge drive end 608 of release arm 580 outwardly to pivot release arm 580 to the locked position. This may permit release arm 580 to automatically (i.e. with additional user action) engage wand 132 upon insertion of wand 132 into surface cleaning head downstream portion 560.
Preferably, all moving parts of locking mechanism 572 are positioned on surface cleaning head 136. This may make adapting accessories that are compatible with locking mechanism 572 less complicated. In the illustrated example, recess 592 is the only component of locking mechanism 572 not positioned on surface cleaning head 136, and is preferably a static, non-movable element. Compatibility with locking mechanism 572 may require only an upstream conduit sized to fit into downstream portion 560 and a recess 592 for engagement by release arm 580. Optionally, surface cleaning head 136 may include a cover 628 for concealing one or more components (such as release arm 580) of locking mechanism 572.
It will be appreciated that any release mechanism may be used with other aspects of this disclosure.
Electrical Connector Guard
The following is a description of an electrical connector guard that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, surface cleaning apparatus 100 has an electrical connector to which an accessory tool, such as an electrified cleaning wand or motorized cleaning head may be connected. In some cases, the accessory tool may not require an electrical connection (e.g., a crevice tool). In such a case, the accessory tool may be mounted to conduit 128 without needing to connect to the electrical connector. In such a case, the electrical connector may be exposed. If the electrical connector is live, a user might be exposed to an electrical shock risk from the exposed electrical connector. In accordance with this aspect, the accessory tool is provided with a cover or cowl to cover or surround the electrical connector. The cowl protects the electrical connector from damage (e.g., by hitting a piece of furniture during use of the surface cleaning apparatus) and inhibits a user being exposed to an electrical shock risk from the exposed electrical connector.
Referring to
Electrical connector 140 may be positioned in any suitable location on surface cleaning apparatus 100. Preferably, electrical connector 140 is positioned proximate inlet end 124. This may permit electrical connector 140 to join with a mating accessory connector when the accessory is fluidly coupled to inlet end 124. Reference is now made to
As shown, wand 132 further includes an upstream connector 652 at wand upstream end 552. Electrical wires 656 extend from wand downstream connector 648 to wand upstream connector 652 for transmitting electricity therebetween. Preferably, electrical wires 656 are isolated from the airflow path extending between the upstream and downstream ends 548 and 552 of wand 132. For example, wand 132 may include an isolated conduit 656 in an interior thereof for housing wires 656.
Referring to
In some cases, an accessory may not require power from surface cleaning apparatus 100 when connected thereto. For example, the accessory may have its own source of power or may not be powered at all. This may leave electrical connector 140 disconnected. Preferably, such an accessory may protect electrical connector 140 against exposure to dirt and damage.
Reference is now made to
Connector guard 688 may take any suitable form. In the illustrated example, connector guard 688 includes sidewalls 692 and 696, and an end wall 700, which collectively define a cavity 704 for receiving electrical connector 140. Cavity 704 is preferably sized to substantially enclose electrical connector 140 when downstream end 680 is secured to main body 108. As illustrated, inner sidewall 696 may be a sidewall of receptacle 684 or an independent sidewall. Optionally, opening 708 to receptacle 684 and the opening to connector guard 688 lie in substantially the same plane, as shown. This may permit connector guard 688 to effectively cover electrical connector 664 against debris and damage.
It will be appreciated that, in other embodiments, connector guard 688 may be of any design that overs the inlet end of electrical connector 140 and need not cover all of electrical connector 140.
Powered Accessories
The following is a description of a control arrangement for powered accessories that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
Preferably, surface cleaning apparatus 100 may be connected to a plurality of different accessories. Some accessories may have more operational modes than others. For example, some accessories may have a single operational mode (i.e. on), whereas other accessories may have multiple operational modes (e.g., high and low). As used herein and in the claims, off is not considered an “operational mode” and is common to all accessories. According to some electrical circuits, a two-wire connection between apparatus 100 and an accessory may be sufficient to provide control over a single operational mode, and a three-wire connection may be used to provide control over multiple operational modes.
Surface cleaning apparatus 100 is provided with a multi-position switch 640 which may have more than two positions (other than off). For example switch 640 may be moveable between an “off” position in which all of the wires in electrical connector 140 are de-energized and suction motor 148 is de-energized; “a suction motor on, brush low speed” position in which electrical connector 140 is energized to provide a first lower level of power and suction motor 148 is energized; and, a “suction motor on, brush high speed” position in which electrical connector 140 is energized to provide a second higher level of power and suction motor 148 is energized.
Preferably, the same electrical connector 140 is used to connect with accessories having limited operational modes, and with accessories having many operational modes. For example, electrical connector 140 may be a three-wire electrical socket that is connectable with both two and three wire mating accessory electrical plugs.
Reference is now made to
Optionally, electrical connector 720 of upholstery cleaner 716 may include a connector guard 724. Connector guard 724 is substantially similar to connector guard 688 described above. Connector guard 724 may surround electrical connector 140 to protect at least the disconnected third wire from exposure to dirt and damage.
Alternatively, the first position of switch 640 may provide power to surface cleaning apparatus 100, and second/further positions of switch 640 may provide power to both surface cleaning apparatus 100 and the connected accessory. This may permit the accessory to be selectively activated while powering surface cleaning apparatus 100.
In alternate embodiments, a separate on/off switch may be provided for suction motor 148.
It will be appreciated that any control mechanism may be used with other aspects of this disclosure.
Openable Cleaning Tool
The following is a description of an openable cleaning tool that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, a cleaning tool has a cleaning member that may require occasional cleaning. For example, the cleaning tool may include a brush that may collect hairs or other elongate material, e.g., a rotatable bush. In such a case, the user may occasional desire to clean the brush by removing the elongate material therefrom. Accordingly, the cleaning tool may have an openable member which is situated so as to permit a user to clean the brush while the brush is still mounted in the cleaning tool. Preferably, the openable member increases the size of the dirty air inlet of the cleaning tool. Accordingly, one part of the housing defining the dirty air inlet may be moveable mounted (e.g., pivotally, slideable, etc.) to the rest of the housing.
As exemplified in
Upstream portion 732 is provided with a brush 756 having bristles 760 which extend out of dirt air inlet 748 for contacting the cleaning surface and entraining dirt and hair thereon. Optionally, upholstery cleaner 716 further includes a motor (e.g., electric motor or air turbine—not shown), such as in upstream portion 732, for driving brush 756 to rotate.
In operation, brush 756 is prone to having hair and the like being wound around bristles 760. Accordingly to this aspect, lower end 752 of upstream portion 732 is adapted to provide selective access to brush 756 for cleaning. For example, lower end 752 may include one or more portions which may be moved relative to brush 756 to improve access to brush 756. In the illustrated example, lower end 752 includes a forward portion 764 and a rear portion 770 which border dirty air inlet 748. As shown, forward portion 764 may be pivotally mounted to rear portion 770 to permit forward portion 764 to rotate away from brush 756 and thereby provide improved access to brush 756. As shown, forward portion 764 may be rotated about axis 772 between a closed position (
Optionally, lower end 752 may be rotatably mounted to upstream portion 732. This may permit lower end 752 to rotate to maintain contact with a cleaning surface. In turn, this may improve the cleaning efficiency of upholstery cleaner 716, especially for uneven surfaces such as upholstery. In the illustrated example, lower end 752 is rotatable with respect to upstream portion 732 about an axis 784. Axis 784 may be substantially parallel to brush axis of rotation 788. More preferably, axis 784 is coincident (i.e. the same) as brush axis 788. This may permit brush 756 to maintain a constant distance to dirty air inlet 748, for contacting the cleaning surface with bristles 760, as lower end 752 is rotated into different positions.
Lower end 752 may be rotatable about axis 784 from a first rearward position (see
It will be appreciated that the accessory 716 may be provided with a rotatably mounted lower end 752 without a pivotally mounted forward portion 764.
Optionally, in any embodiment, upholstery cleaner 716 may include a bleed valve. The bleed valve may permit ambient air to enter the airflow pathway through upholstery cleaner 716 to reduce the suction developed at dirty air inlet 748. Preferably, the bleed valve is manually operable. This may permit a user to selectively open the bleed valve to reduce suction at dirty air inlet 748, which may improve cleaning efficiency over, e.g. high pile carpet. Alternatively, the bleed valve may open automatically in response to a sealed suction situation (e.g. low pressure) in the airflow pathway. This may help to prevent overheating of suction motor 148 by drawing in additional air through the bleed valve.
Bleed valve 792 may be position in any suitable location on upholstery cleaner 716. In the illustrated example, bleed valve 792 is positioned on an upper surface 796 of upstream portion 732 of upholstery cleaner 716. In alternative embodiments, bleed valve 792 may be positioned on downstream portion 728.
Bleed valve 792 is an example of a manually openable bleed valve 792. As shown, bleed valve 792 includes a slide 800 which may be selectively moved (left and right in the example shown) between opened and closed positions. In the open position, bleed valve 792 allows supplemental air to enter the airflow path, and in the closed position, bleed valve 792 does not allow supplemental air to enter the airflow path. Preferably, bleed valve 792 includes additional partially open positions between the open and closed positions. This may provide additional control over the amount of air allowed to cross bleed valve 792 into the airflow path. In turn, this may provide finer control over the suction developed at dirty air inlet 748. For example, maximum suction may be desired for hard floors, medium suction may be desired for low pile carpet, and minimum suction may be desired for high pile carpet.
Lighting
The following is a description of a lighting arrangement that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
Surface cleaning apparatus 100 may include one or more lights that operate to illuminate a surface to be cleaned or to illuminate components of surface cleaning apparatus 100. For example, surface cleaning apparatus 100 or an attached accessory may include one or more forward facing lights (e.g. LED, halogen, or incandescent bulbs).
Reference is now made to
Light 804 may be activated in any suitable manner. For example, surface cleaning apparatus 100 may include a dedicated actuator (e.g. switch, lever, or button) for powering light 804. Alternatively, and as shown, light 804 may be powered by operation of a shared control actuator, such as switch 640. This may permit the activation of light 804 to be coordinated with the activation of other components of surface cleaning apparatus 100 such as suction motor 148. For example, when switch 640 is in the OFF position, both suction motor 148 and light 804 may be powered off. When switch 640 is in any other position (e.g. a first position), both suction motor 148 and light 804 may be powered on. In effect, light 804 may power on automatically with suction motor 148.
Alternatively, switch 640 may include a first position in which suction motor 148 is powered on while light 804 is powered off, and a second position in which both suction motor 148 and light 804 is powered on. This may permit light 804 to be selectively activated or deactivated while operating surface cleaning apparatus 100, e.g. to conserve energy.
Accessory Mount
The following is a description of an accessory mount that may be used by itself in any surface cleaning apparatus or in any combination or sub-combination with any other feature or features disclosed herein.
In accordance with this aspect, surface cleaning apparatus 100 is provided with storage for one or more accessories. Accordingly, accessories (e.g. a crevice tool, wand extension, power brush, etc.) may be conveniently stored and available when required. These accessories may be mounted to inlet end 124 for expanding the functionality of surface cleaning apparatus 100 or for improving cleaning efficiency on the particular cleaning surface. In order to reduce the footprint of surface cleaning apparatus 100 during use, the storage mount may be provided on wand 132. An advantage of this design is that the accessory tools are not located on the cleaning head, which could increase the height or width of the cleaning head and reduce the furniture under which it may fit, nor are they located on the hand vac itself. Instead, they are provided on a the wand at a position between the cleaning head and the hand vac.
It will be appreciated that the storage mount may be releasable secured to wand 132 or it may be permanently mounted thereto, such as by being molded as part thereof, or by being a separate part that is secured to wand 132 by an adhesive, a mechanical fastener such as a screw or the like.
As exemplified in
Accessory mount 808 is shown including two mounting portions 816 laterally connected to engagement portion 812. Mounting portions 816 are positioned to support an accessory, such as crevice tool 824 or brush 828. Preferably, one or more of mounting portion 816, and more preferably both of mounting portion 816, can support an accessory oriented in parallel with the mounting surface (here wand 132) as shown. In alternative embodiments, one or more of mounting portions 816 may support an accessory oriented at an angle to the mounting surface.
In some embodiments, accessory mount 808 may include more than two mounting portions 816. For example, accessory mount 808 may include a plurality of mounting portions 816 arranged in pairs (or larger groups), which are distributed about a periphery of engagement portion 808.
Each accessory mount 808 may have any suitable configuration for supporting an accessory. For example, each accessory mount 808 may include one or more of a plug, a receptacle, a magnet, a hook or loop fastener, a snap, or another suitable mounting member for retaining an accessory. In the example shown, each accessory mount 808 includes a plug sized to form a friction frit inside an air outlet of an accessory.
While the above description provides examples of the embodiments, it will be appreciated that some features and/or functions of the described embodiments are susceptible to modification without departing from the spirit and principles of operation of the described embodiments. Accordingly, what has been described above has been intended to be illustrative of the invention and non-limiting and it will be understood by persons skilled in the art that other variants and modifications may be made without departing from the scope of the invention as defined in the claims appended hereto. The scope of the claims should not be limited by the preferred embodiments and examples, but should be given the broadest interpretation consistent with the description as a whole.
This application is a continuation of co-pending U.S. patent application Ser. No. 14/335,060, filed on Jul. 18, 2014, which is herein incorporated by reference in its entirety.
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