Patent Application
20200344953
Embodiments of the present disclosure are directed to grounds maintenance vehicles such as stand-on lawn mowers and, more particularly, to such vehicles having a control tower with a removable skin.
Riding grounds maintenance vehicles such as lawn mowers and the like are used by homeowners and professionals to care for lawns and other surfaces. These vehicles include a prime mover, e.g., internal combustion engine or electric motor, to power not only an implement (e.g., cutting deck) attached to the vehicle but also a traction drive system, the latter adapted to propel the vehicle over a ground surface.
Landscape contractors sometimes prefer stand-on mowers. Such mowers typically include a standing platform located behind the mower's rear wheels and a tower forward of the platform to support various hand controls.
One benefit of stand-on mowers is that they are often shorter than conventional riding mowers and, consequently, may be more maneuverable under certain mowing conditions. Typically, stand-on mowers utilize an engine having a horizontally- or vertically-oriented drive shaft to provide power, e.g., via endless belts, to both the cutting deck and to the traction drive system. Each drive wheel may utilize its own hydrostatic pump, and each pump may be independently controlled to provide the mower with a very small turning radius and, in some instances, a zero-turning-radius (ZTR) where the mower can spin about a midpoint between the two drive wheels. Some components of the mower may be located within or proximate the tower.
In general, the present disclosure describes various embodiments of a grounds maintenance vehicle that includes a frame having a control tower. The control tower includes a support structure and a removable skin connected to the support structure. The skin is adapted to be at least partially removed from the support structure to facilitate additional access to an interior space of the control tower that is defined by the support structure.
In one aspect, the present disclosure provides a grounds maintenance vehicle that includes a frame having a front end, a rear end, and a control tower disposed at or near the rear end of the frame. The control tower includes a support structure that defines an interior space of the control tower. The control tower also includes a nonplanar removable skin connected to the support structure. The removable skin includes a front side disposed over a front side of the support structure and a lateral side disposed over at least one of a left side or a right side of the support structure. A portion of at least one of the front side or lateral side of the removable skin is disposed above an uppermost surface of a prime mover that is connected to the frame. Further, the removable skin is adapted to be at least partially removed from the support structure to facilitate additional access to the interior space of the control tower.
In another aspect, the present disclosure provides a stand-on riding grounds maintenance vehicle that includes a frame having a front end, a rear end, and a control tower disposed at or near the rear end of the frame. The control tower includes a platform attached to the frame at or near the rear end, where the platform is adapted to support a standing operator; a support structure that defines an interior space of the control tower; and a prime mover connected to the frame at or near the control tower. The control tower also includes a nonplanar removable skin connected to the support structure. The removable skin includes a front side disposed over a front side of the support structure and a lateral side disposed over at least one of a left side or a right side of the support structure. A portion of at least one of the front side or lateral side of the removable skin is disposed above an uppermost surface of the prime mover. Further, the removable skin is adapted to be at least partially removed from the support structure to facilitate additional access to the interior space of the control tower.
In another aspect, the present disclosure provides a stand-on riding grounds maintenance vehicle that includes a frame having a front end, a rear end, and a control tower disposed at or near the rear end of the frame. The control tower includes a platform attached to the frame at or near the rear end, where the platform is adapted to support a standing operator; a support structure that defines an interior space of the control tower; and a prime mover connected to the frame at or near the control tower. The control tower also includes a nonplanar unitary removable skin connected to the support structure. The removable skin includes a front side that is disposed over and removably connected to a front side of the support structure, a lateral side that is disposed over and removably connected to a left side of the support structure, and a second lateral side that is disposed over and removably connected to a right side of the support structure. A portion of at least one of the front side, lateral side, or second lateral side of the support structure is disposed above an uppermost surface of the prime mover. Further, the removable skin is adapted to be removed from the support structure to facilitate additional access to at least one of the prime mover, a traction drive system, or an actuation mechanism. The control tower also includes a pad disposed over and connected to a rear side of the support structure.
The above summary is not intended to describe each embodiment or every implementation. Rather, a more complete understanding of illustrative embodiments will become apparent and appreciated by reference to the following Detailed Description of Exemplary Embodiments and claims in view of the accompanying figures of the drawing.
Exemplary embodiments will be further described with reference to the figures of the drawing, wherein:
The figures are rendered primarily for clarity and, as a result, are not necessarily drawn to scale. Moreover, various structure/components, including but not limited to fasteners, electrical components (wiring, cables, etc.), and the like, may be shown diagrammatically or removed from some or all of the views to better illustrate aspects of the depicted embodiments, or where inclusion of such structure/components is not necessary to an understanding of the various exemplary embodiments described herein. The lack of illustration/description of such structure/components in a particular figure is, however, not to be interpreted as limiting the scope of the various embodiments in any way.
In the following detailed description of exemplary embodiments, reference is made to the accompanying figures of the drawing that form a part hereof. It is to be understood that other embodiments, which may not be described and/or illustrated herein, are certainly contemplated.
All headings provided herein are for the convenience of the reader and should not be used to limit the meaning of any text that follows the heading, unless so specified. Moreover, unless otherwise indicated, all numbers expressing quantities, and all terms expressing direction/orientation (e.g., vertical, horizontal, parallel, perpendicular, etc.) in the specification and claims are to be understood as being modified by the term “about.”
In general, the present disclosure describes various embodiments of a grounds maintenance vehicle that includes a frame having a control tower. The control tower includes both a support structure and a removable skin connected to the support structure. The skin is adapted to be at least partially removed from the support structure to facilitate additional access to an interior space of the control tower that is defined by the support structure.
Currently-available stand-on mowers typically include a frame that has a control tower connected to the frame. The tower provides a control area that positions mower controls within comfortable reach of an operator who may be standing either behind the mower or upon a platform connected to the mower. The control tower can also include one or more pads disposed on a rear side of the control tower that provide support (e.g., thigh support) for the operator such that the operator can lean against the control tower during operation. Further, various components of control systems and power systems may be disposed within an interior space of the control tower that is defined by a support structure of the tower. Specifically, the term “interior space” as used herein means space contained within the support structure of the tower. Oftentimes, the support structure may be formed by slab skins, or the tower may include skins that are permanently attached to this support structure. These skins cover some or all of the components disposed within the interior space of the control tower. As a result, the skins may limit access to the components disposed within the interior space of the control tower, potentially complicating various maintenance tasks.
One or more embodiments of stand-on riding grounds maintenance vehicles described herein can include a tower at least partially formed by a removable skin connected to a support structure. The skin can be at least partially removable from the support structure to facilitate additional access to the interior space of the control tower of the vehicle. This additional access can ease maintenance or removal of one or more components of the vehicle that are disposed at least partially within the control tower. Following maintenance or replacement of one or more of the components, the removable skin can be reconnected to the support structure of the control tower. Such skin can provide protection to one or more of these components from debris, as well as provide a more aesthetically pleasing appearance.
With reference to the figures of the drawing, wherein like reference numerals designate like parts and assemblies throughout the several views,
It is noted that the term “comprises” and variations thereof do not have a limiting meaning where these terms appear in the accompanying description and claims. Further, “a,” “an,” “the,” “at least one,” and “one or more” are used interchangeably herein. Moreover, relative terms such as “left,” “right,” “front,” “fore,” “forward,” “rear,” “aft,” “rearward,” “top,” “bottom,” “side,” “upper,” “lower,” “above,” “below,” “horizontal,” “vertical,” and the like may be used herein and, if so, are from the perspective of one operating the vehicle 100 while the vehicle is in an operating configuration, e.g., while the vehicle 100 is positioned such that ground engaging members (e.g., wheels 106 and 108) rest upon a generally horizontal ground surface 103 as shown in
Still further, the suffixes “a” and “b” may be used throughout this description to denote various left- and right-side parts/features, respectively. However, in most pertinent respects, the parts/features denoted with “a” and “b” suffixes are substantially identical to, or mirror images of, one another. It is understood that, unless otherwise noted, the description of an individual part/feature (e.g., part/feature identified with an “a” suffix) also applies to the opposing part/feature (e.g., part/feature identified with a “b” suffix). Similarly, the description of a part/feature identified with no suffix may apply, unless noted otherwise, to both the corresponding left and right part/feature.
While not necessarily central to an understanding of exemplary embodiments of the present disclosure (e.g., other vehicle configurations are certainly contemplated), the general construction of the exemplary vehicle 100 is briefly described below.
The control tower 101 also includes a support structure 170 that defines an interior space 172 (
As used herein, the term “at least partially removed” means that at least one or more portions of the skin 174 can be removed from the support structure 170 while one or more additional portions of the skin remain removably connected to the support structure or that the entire skin can be removed from the support structure. Further, the term “additional access” as used herein means that partial or complete removal of the skin 174 provides access to the interior space 172 of the control tower 101 in addition to access that may be provided by other openings or passageways to the interior space of the control tower not covered or occluded by the skin or other structure of the control tower. For example, in one or more embodiments, the interior space 172 of the control tower 101 can be completely enclosed by any combination of fixed and removable skins 174. As a result, no access to the interior space 172 of the control tower 101 is provided other than by removal of one or more at least partially removable skins. Further, in one or more embodiments, the control tower 101 can include one or more openings or passageways between an exterior of the tower and the interior space 172 without removal of one or more removable skins. By at least partially removing the removable skin 174, access in addition to any access to the interior space 172 of the control tower 101 already present can be provided.
The frame 102 can include any suitable frame or frames and can be a unitary part or multiple parts connected using any suitable technique or techniques. In one or more embodiments, the frame 102 can support a power source or prime mover 104, e.g., an internal combustion engine. A pair of transversely opposing, ground engaging members, e.g., first and second (left and right) rear drive wheels 106a and 106b, may be coupled to opposite (left and right) rear sides of the chassis to support the mower upon, and propel the vehicle 100 relative to, the ground surface 103. Each drive wheel 106 may be powered by its own hydraulic motor (not shown) that receives power from, at least in one embodiment, its own hydrostatic pump (also not shown). The pumps may be supported by the frame 102 and powered by the prime mover 104 as described, e.g., in U.S. patent application Ser. No. 15/803,979, entitled GROUNDS MAINTENANCE VEHICLE WITH POWER SYSTEM INCORPORATING DUAL DRIVE SHAFTS. In one or more embodiments, the prime mover 104 is operatively coupled to the left and right rear drive wheels 106a, 106b. While not illustrated, other drive systems, e.g., gear or pulley driven systems, may also be utilized without departing from the scope of the disclosure.
Operator controls, as further described herein, permit independent control of the speed and direction of each drive wheel 106, allowing operator control of vehicle 100 speed and direction from a walking or riding (e.g., standing) position generally behind the vehicle 100. A pair of front ground engaging members (e.g., left and right caster wheels 108a, 108b), which may be connected to forwardly extending frame rails 117, may support the front of the vehicle 100 in rolling engagement with the ground surface 103.
Although the illustrated vehicle 100 has the drive wheels 106 in the rear and caster wheels 108 in front, this configuration is not limiting. For example, other embodiments may reverse the location of the wheels, e.g., drive wheels in front and driven or undriven wheels in back. Moreover, other configurations may use different wheel configurations altogether, e.g., a tri-wheel configuration or a vehicle having conventionally-steered wheels. These and other embodiments are certainly possible without departing from the scope of the present disclosure. Moreover, while illustrated herein as wheels, other ground engaging members (e.g., tracks, skids, etc.) are also contemplated.
An implement, e.g., cutting deck 114, may be connected to a lower side of the frame 102 (generally longitudinally between the drive wheels 106 and the caster wheels 108). The cutting deck 114 may include one or more cutting blades (not shown) as known in the art. The cutting blades may be operatively powered, via spindles connected to the deck, by the prime mover 104 via an implement drive system as further described herein. During operation, power is selectively delivered to the cutting deck 114, whereby the blades rotate at a speed sufficient to sever grass and other vegetation as the cutting deck passes over the ground surface 103. As indicated herein, other grounds maintenance vehicles (e.g., snow throwers) may locate the implement above the frame or at other locations along the lower side of the frame (e.g., a forwardly-mounted or “out-front” deck configuration). Moreover, while described as a cutting deck, the implement may be any tool (e.g., snow thrower, aerator, etc.) that attaches to the frame 102.
The exemplary vehicle 100 can also include a standing platform 112 attached to the frame 102 at or near the rear end R. The platform 112, which may support a standing operator, may be moved between a deployed position as shown in
As illustrated in
The control system 150 may include a first control lever 152a and a second control lever 152b pivotally attached to the vehicle 100, e.g., to the control tower 101. The control levers 152 may be configured to pivot about a generally transverse axis (i.e., an axis transverse to the longitudinal axis 110 of the vehicle 100) between a first or forward stop 154, and a second or rearward stop 156. One or both of the control levers 152 (e.g., 152b as shown in
The control levers 152 may further be biased to an intermediate, neutral position between the two stops 154 and 156 as shown in
The control levers 152 may each thus be movable between a first neutral position corresponding to first or zero forward velocity of its respective drive wheel 106, and a second position (abutting the forward stop 154) corresponding to a second or maximum forward velocity of its respective drive wheel. As a result, each control lever 152 may independently vary a velocity of its respective drive wheel 106 incrementally between zero forward velocity and maximum forward velocity without varying the engine throttle. Each lever 152 may additionally be movable to a third position (abutting the stop 156) corresponding to a maximum reverse velocity of its respective drive wheel 106.
As
The support structure 170 (see
Removably connected to the support structure 170 is the skin 174 (shown exploded in
The removable skin 174 can have any suitable dimensions and take any suitable shape or shapes. In one or more embodiments, the removable skin can be nonplanar. As used herein, the term “nonplanar” means that the removable skin 174 does not lie or is not confined within a single plane, i.e., the skin has a three-dimensional shape. In one or more embodiments, the skin 174 can partially or completely cover left, right, front, and rear sides 190, 192, 194, 195 of the support structure 170.
When the skin 174 is connected to the support structure 170, the front side 184 is disposed over at least the front side 194 of the support structure, the lateral side 186 is disposed over at least the left side 190 of the support structure, and the second lateral side 188 is disposed over at least the right side 192 of the support structure. Although depicted as being disposed over the left side 190 of the support structure 170, the lateral side 186 can instead be disposed over at least the right side 192 of the support structure. In other words, the lateral side 186 of the skin 174 can be disposed over the left side 190 or the right side 192 of the support structure 170.
Further, in one or more embodiments, a portion 182 of the skin 174 can be disposed above an uppermost surface 107 of a portion of the prime mover 104 that is disposed within the interior space 172 of the support structure 170. In one or more embodiments, the portion 182 can be a portion of at least one of the front side 184, lateral side 186, or second lateral side 188. In one or more embodiments, the entirety of at least one of the front side 184, the lateral side 186, or the second lateral side 188 can be disposed above the uppermost surface 107 of the portion of the prime mover 104 that is disposed within the interior space 172 of the support structure 170.
The various sides of the removable skin 174 can be connected to any side or sides of the support structure 170 of the control tower 101. In one or more embodiments, the front side 184 of the skin 174 is removably connected to the front side 194 of the support structure 170. In one or more embodiments, the lateral side 186 of the skin 174 is removably connected to the left (or right) side 190 of the support structure 170. Further, in one or more embodiments, the second lateral side 188 of the skin 174 is removably connected to the right (or left) side 192 of the support structure 170.
The skin 174 can be connected to the support structure 170 in any suitable location or locations. Further, the skin 174 can be connected to the support structure 170 using any suitable technique or techniques. For example, in one or more embodiments, the skin 174 can be connected to the support structure 170 using one or more fasteners 176. Any suitable fasteners 176 can be utilized to connect the skin 174 to the support structure 170, e.g., one or more quarter-turn screws, locking pins, bolts, wing nuts, hook and loop fasteners, repositionable adhesives, rivets, capscrews, etc.
The fasteners 176 can be disposed in one or more through holes 189 disposed in the skin 174. The through holes 189 can be disposed in any suitable location or locations in the skin 174. Although not shown, one or more complementary through holes can be disposed in the support structure 170 that align with the through holes 189 disposed in the skin 174 such that a fastener 176 can extend through a through hole of the skin and a through hole of the structure.
The skin 174 can facilitate additional access to one or more components 191 of the vehicle 100 disposed at least partially within the interior space 172 of the control tower 101 (see, e.g.,
Moreover, as mentioned above, the vehicle 100 can include any suitable power system 200, e.g., one or more embodiments of power systems described in U.S. patent application Ser. No. 15/803,979, entitled GROUNDS MAINTENANCE VEHICLE WITH POWER SYSTEM INCORPORATING DUAL DRIVE SHAFTS. The exemplary power system 200 is shown in
The complete disclosure of the patents, patent documents, and publications cited herein are incorporated by reference in their entirety as if each were individually incorporated. In the event that any inconsistency exists between the disclosure of the present application and the disclosure(s) of any document incorporated herein by reference, the disclosure of the present application shall govern.
Illustrative embodiments are described, and reference has been made to possible variations of the same. These and other variations, combinations, and modifications will be apparent to those skilled in the art, and it should be understood that the claims are not limited to the illustrative embodiments set forth herein.
