The present invention relates to a haircare appliance, and an attachment for a haircare appliance.
Haircare appliances are generally used to treat or style hair, and some haircare appliances may treat or style hair using airflow. To provide versatility in treating and styling hair some haircare appliances provide airflow at a variable flow rate.
According to a first aspect of the present invention there is provided an attachment for a haircare appliance, the attachment comprising an air, and an air outlet for emitting airflow, wherein the air outlet is at least partially defined by a movable member, movement of the movable member varies a cross-sectional area of the air outlet, and the movable member is movable in a radial direction relative to a central axis of the attachment
The attachment according to the first aspect of the present invention may be advantageous as the air outlet is at least partially defined by a movable member, movement of the movable member varies a cross-sectional area of the air outlet, and the movable member is movable in a radial direction relative to a central axis of the attachment. In particular, movement of the movable member to vary a cross-sectional area of the air outlet may vary a volume of airflow passing through the air outlet without the need to change a flow rate of the airflow generator. The movable member being movable in a radial direction relative to a central axis of the attachment may enable movement of the movable member in response to radial forces experienced by the movable member in use, for example radial forces experienced in response to engagement of the movable member with hair in use.
By movable in a radial direction relative to a central axis of the attachment is meant movable such that at least a component of motion of the movable member is in a radial direction.
The central axis of the attachment may comprise a central longitudinal axis of the haircare appliance, for example an axis extending centrally along a longest dimension of the haircare appliance.
The movable member may be configured to move in response to engagement of hair with the movable member in use. This may provide variation of the cross-sectional area of the air outlet in response to engagement with hair in use, and may, for example, allow a greater volume of airflow to be supplied through the air outlet when the movable member is engaged by hair in use. The movable member may comprise a plurality of bristles for engaging hair. Bristles may provide a reliable mechanical engagement with hair to move the movable member in use, and may assist with brushing and/or styling of hair.
The attachment may comprise a fixed member that at least partially defines the air outlet, and the movable member may be movable relative to the fixed member to vary the cross-sectional area of the air outlet. Provision of a fixed member and a movable member that each at least partially define the air outlet may provide an arrangement with fewer moving parts than, for example, an arrangement where the air outlet is defined by multiple movable members, which may reduce a risk of component failure in use.
The movable member may be movable in a circumferential direction relative to the central axis, for example movable such that at least a component of motion of the movable member is in a circumferential direction. This may enable movement of the movable member in response to tangential forces experienced by the movable member in use, for example tangential forces experienced in response to engagement of the movable member with hair in use. The movable member may be movable in at least two dimensions, for example movable in a two-dimensional plane of motion.
The movable member may be biased into a rest configuration in which the air outlet comprises a first cross-sectional area, and the movable member may be movable in response to engagement of the movable member within hair to increase the cross-sectional area of the air outlet to a second cross-sectional area greater than the first cross-sectional area. This may enable airflow to be increased through the air outlet in response to the movable member engaging with hair in use.
The first cross-sectional area may be non-zero. In such a manner airflow may still be provided through the air outlet when the movable member is not engaged with hair in use, with the airflow being more diffuse when the movable member is not engaged with hair in use. The air outlet may adopt a maximal cross-sectional area when the movable member is engaged with hair in use.
The movable member may be biased into the rest configuration by airflow flowing through the attachment in use. The movable member may be biased into the rest configuration by airflow flowing at a flow rate greater than a pre-determined threshold.
The airflow generator may be configured to generate an airflow from the air inlet to the air outlet at an airflow rate greater than 4 L/s, greater than 6 L/s, greater than 8 L/s, greater than 10 L/s, greater than 12 L/s, or greater than 14 L/s.
The movable member may be biased into the rest configuration against the force of a biasing member. This may ensure that the movable portion moves away from the rest configuration in the absence of an airflow flowing from the air inlet to the air outlet in use. The biasing member may comprise a plurality of biasing members. The biasing member may comprise a resiliently deformable member, such as a spring.
The movable member may be movable in a radially inward direction toward the central axis to increase the cross-sectional area of the air outlet. This may provide a attachment with a smaller profile compared to, for example, a attachment where the movable member is movable in a radially inward direction. This may also enable movement of the movable member in response to normal forces experienced during engagement of hair with the movable member in use. The movable member may be pressed in the radially inward direction by engagement of hair with the movable member in use. This may provide easier movement of the movable member compared to, for example, a movable member that is movable in a radially outward direction and has to overcome the force of hair engaged with the movable member in use. The movable member may be movable in a radially outward direction to decrease the cross-sectional area of the air outlet.
The movable member may be movable in a radially outward direction away from the central axis to increase the cross-sectional area of the air outlet. This may ensure that an airflow path in the interior of attachment is unobstructed by the movable member, and may inhibit formation of vortices in the airflow path. The movable member may be pulled in the radially outward direction by engagement of hair with the movable member in use. The movable member may be movable in a radially inward direction to decrease the cross-sectional area of the air outlet.
The movable member may be located intermediate two adjacent fixed members, the air outlet may comprise first and second apertures, the first fixed member and the movable member may define the first aperture, the second fixed member and the movable member may define the second aperture, and movement of the movable member may vary cross-sectional areas of the first and second apertures. Thus a single movable member may be used to vary cross-sectional areas of two apertures. Movement of the movable member may increase the cross-sectional area of the first aperture whilst decreasing the cross-sectional area of the second aperture. Movement of the movable member may increase the cross-sectional area of the second aperture whilst decreasing the cross-sectional area of the first aperture. Movement of the movable member may increase the cross-sectional areas of both the first and the second apertures at the same time. Movement of the movable member may decrease the cross-sectional areas of both the first and the second apertures at the same time.
Engagement of hair with the movable member to apply a force to the movable member in a first direction may increase a cross-sectional area of the first aperture and may decrease a cross-sectional area of the second aperture, and engagement of hair with the movable member to apply a force to the movable member in a second direction opposite to the first direction may increase a cross-sectional area of the second aperture and may decrease a cross-sectional area of the first aperture. This may enable an increase in cross-sectional area of apertures defined by the movable member in response to forces applied in opposing directions via engagement with hair in use.
The movable member may be pivotable such that engagement of hair with the movable member to apply the force to the movable member in the first direction causes a first end of the movable member to increase the cross-sectional area of the first aperture and causes a second end of the movable member opposite the first end of the movable member to decrease the cross-sectional area of the second aperture, and engagement of hair with the movable member to apply the force to the movable member in the second direction causes the first end of the movable member to decrease the cross-sectional area of the first aperture and causes the second end of the movable member to increase the cross-sectional area of the second aperture. Thus the movable member may selectively increase the cross-sectional are of one aperture whilst decreasing the cross-sectional area of the other aperture at the same time.
The first end of the movable member may move in a first radial direction to increase the cross-sectional area of the first aperture, and the first end of the movable member may move in a second radial direction opposite to the first radial direction to decrease the cross-sectional area of the first aperture. The second end of the movable member may move in the first radial direction to increase the cross-sectional area of the second aperture, and the second end of the movable member may move in the second direction to decrease the cross-sectional area of the first aperture. The first end of the movable member may move in the first radial direction when the second end of the movable member moves in the second radial direction, and the first end of the movable member may move in the second radial direction when the second end of the movable member moves in the first radial direction.
A pivot point about which the movable member is pivotable may be located in a channel such that the pivot point is slidable in a radial direction within the channel. This may enable both rotational and translational movement of the movable member in radial directions. The channel may, for example, be formed in a fixed member of the attachment. The pivot point may be centrally located on the movable member, for example centrally located on an upper and/or lower surface of the movable member. The channel may comprise tapered ends. This may ensure that the first and second apertures cannot be fully closed.
The first end of the movable member may be located adjacent the first fixed member, the second end of the movable member may be located adjacent the second fixed member, the first end of the movable member may be connected to the second fixed member by a rod, the movable member may be pivotable relative to the rod and the rod may be pivotable relative to the second fixed member. This may enable both rotational and translational movement of the movable member in radial directions.
The movable member may comprise a first portion at least partially defining the first aperture, and a second portion at least partially defining the second aperture, the first portion and the second portion pivotally connected such that the first and second portions are independently movable relative to one another. This may allow a cross-sectional area of the first aperture to be varied, for example increased, independently of the cross-sectional area of the second aperture. The first portion may be movable in response to a force applied in a first direction by engagement of the movable member with hair in use, and the second portion may be movable in response to a force applied in a second direction by engagement of the movable member with hair in use, the second direction opposite to the first direction.
Movement of the movable member in a first direction may increase the cross-sectional area of each of the first and second apertures, and movement of the movable member in a second direction opposite to the first direction may decrease the cross-sectional area of each of the first and second apertures. This may be beneficial where, for example, the first and second apertures are located on the same side of the attachment, as airflow through the first and second apertures may be increased at the same time, thereby providing greater airflow to the same side of the attachment.
Movement of the movable member may be constrained such that the first and second apertures comprise maximal and minimal cross-sectional areas at boundaries of motion of the movable member. This may ensure that, for example, displacement of the movable member at maximal distances relative to other components of the attachment provides maximal and minimal cross-sectional areas for the first and second apertures and, for example, maximal and minimal airflow through the first and second apertures for a given flow rate of the airflow generator.
The attachment may comprise a stopping member located radially inwardly of the movable member, and the stopping member may be shaped to constrain motion of the movable member. This may ensure that motion of the movable member is constrained in a radially inward direction through simple mechanical engagement of the movable member and the stopping member in use. The movable member may be biased away from the stopping member by airflow through the attachment in use.
The movable member may be floating between the first and second fixed members and the stopping member, for example such that the movable member is free to move between the first and second fixed members and the stopping member in response to applied forces in use.
The movable member may be movable to vary the cross-sectional area of the first and second apertures against the force of a biasing member. This may ensure that the first and second apertures have a nominal cross-sectional area in the absence of engagement of the attachment with hair in use.
The attachment may comprise a plurality of movable members movable in a radial direction relative to the central axis of the attachment, and each of the plurality of movable members may at least partially define a respective one of a plurality of air outlets, the plurality of air outlets spaced about a periphery of the attachment. This may be beneficial as it may enable variability of airflow provided through air outlets located about the periphery of the attachment, for example enabling the cross-sectional area of different air outlets located about the periphery of the attachment to be varied in use.
A first one of the plurality of movable members may be located on a first side of the attachment, a second one of the plurality of movable members may be located on a second side of the attachment, a first one of the plurality of air outlets may be located on the first side of the attachment, a second one of the plurality of air outlets may be located on the second side of the attachment opposite to the first side of the attachment, and movement of the first moveable member to vary a cross-sectional area of the first air outlet may cause movement of the second movable member to vary a cross-sectional area of the second air outlet. This may also enable automatic adjustment of a number of air outlets when a movable member is moved in use.
Movement of the first movable member in a first direction may increase the cross-sectional area of the first air outlet, movement of the second movable member in the first direction may decrease the cross-sectional area of the second air outlet, movement of the first movable member in a second direction opposite to the first direction may decrease the cross-sectional area of the first air outlet, and movement of the second movable member in the second direction may increase the cross-sectional area of the second air outlet. This may enable selective provision of a greater amount of airflow from the first air outlet relative to the second air outlet, or vice versa. This may increase airflow through an air outlet on one side of the attachment, for example the side of the attachment that is engaged with hair in use, whilst decreasing airflow through the air outlet on the opposing side of the attachment, for example the side of the attachment that is not engaged with hair in use. This may allow a greater volume of airflow to be provided on one side of the attachment relative to the other side of attachment in use, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process.
The attachment may comprise a central axis, for example a central longitudinal axis, the first and second sides of the attachment may be located on opposing sides of the central axis, and the first and second air outlets may be located on opposing sides of the central axis. The first and second sides of attachment may be located on opposing sides of a plane containing the central axis, and the first and second air outlets may be located on opposing sides of the plane.
Movement of the first movable member to increase the cross-sectional area of the first air outlet may decrease an internal air pressure of the attachment in use, and the decrease in internal air pressure may cause movement of the second movable member to decrease the cross-sectional area of the second air outlet. This may provide an automatic mechanism for decreasing the cross-sectional area of the second air outlet in response to increasing the cross-sectional area of the first air outlet, or vice versa. For example, an internal air pressure of the attachment may be sufficient to bias the first and second movable members such that the first and second air outlets comprise the same cross-sectional area, whilst movement of the first movable member to increase the cross-sectional area of the first air outlet may decrease the internal air pressure of the attachment. Such a decrease in internal air pressure may mean that the internal air pressure is no longer sufficient to retain the second movable member in its initial position, and so the second movable member may move to decrease the cross-sectional area of the second air outlet in response to the decrease in internal air pressure of the attachment.
Movement of the first movable member may cause the first movable member to contact and cause movement of the second movable member. Movement of the second movable member may cause the second movable member to contact and cause movement of the first movable member. Such physical contact between the first and second movable members may provide a reliable way of causing motion of the other of the second and first movable members in use. The first or second movable member may rotate about a periphery of the attachment to contact the other of the second or first movable member.
The first and second movable members may be linked by at least one mechanical link. Such a mechanical link may ensure that movement of the first movable member causes movement of the second movable member, and vice versa. The mechanical link may enable reciprocal motion of the first and second movable members. The first and second movable members may be directly linked by at least one mechanical link, or indirectly linked by at least one mechanical link.
The at least one mechanical link may be resiliently deformable such that movement of the first movable member causes movement of the second movable member, or vice versa. This may, for example, ensure that the first and second movable members can return to their original positions in the absence of an applied force in use. Deformation of the at least one mechanical link in response to movement of the first movable member in a first direction may cause movement of the second movable member in the first direction.
The attachment may comprise a third movable member, the first, second and third movable members may be spaced about a periphery of attachment, and adjacent movable members may be linked by a mechanical link. In such a manner movement of any of the movable members may impact on any combination of the other movable members.
Each movable member may be linked to the other movable members by a single mechanical link. Use of a single mechanical link may reduce component count and/or cost compared to a similar arrangement that utilises a plurality of mechanical links, and may reduce a risk of failure in use.
According to a second aspect of the present invention there is provided a haircare appliance comprising an air inlet, an air outlet, and an airflow generator for generating an airflow from the air inlet to the air outlet, wherein the air outlet is at least partially defined by a movable member, movement of the movable member varies a cross-sectional area of the air outlet, and the movable member is movable in a radial direction relative to a central axis of the haircare appliance.
The haircare appliance may comprise a heater to heat the airflow generated by the airflow generator in use.
The haircare appliance may comprise a handle unit within which the airflow generator is disposed, and an attachment comprising the air outlet and the movable member, the attachment removably attachable to the handle unit. Providing the air outlet described above as part of a removable attachment may allow the functionality described herein to be selectively provided by a user.
Optional features of aspects of the present invention may be equally applied to other aspects of the invention, where appropriate.
A haircare appliance according to the present invention, generally designated 10, is shown schematically in
The haircare appliance 10 comprises a handle unit 12, and an attachment 100 removably attachable to the handle unit 12.
The handle unit 12 comprises a housing 14, an airflow generator 16, a heater 18, and a control unit 20, as can be seen schematically in
The housing 14 is tubular in shape, and comprises an air inlet 22 through which an airflow is drawn into the housing 14 by the airflow generator 16, and an air outlet 24 through which the airflow is discharged from the housing 14. The airflow generator 16 is housed within the housing 14, and comprises an impeller 26 driven by an electric motor 28. The heater 18 is also housed within the housing 14, and comprises heating elements 30 to optionally heat the airflow.
The control unit 20 comprises electronic circuitry for a user interface 32 and a control module 34. The user interface 32 is provided on an outer surface of the housing 14, and is used to power on and off the haircare appliance 10, to select a flow rate (for example high, medium and low), and to select an airflow temperature (for example hot, medium or cold). In the example of
The control module 34 is responsible for controlling the airflow generator 16, and the heater 18 in response to inputs from the user interface 32. For example, in response to inputs from the user interface 32, the control module 34 may control the power or the speed of the airflow generator 16 in order to adjust the airflow rate of the airflow, and the power of the heater 18 in order to adjust the temperature of the airflow.
The attachment 100 is shown schematically in
The main body 106 is generally cylindrical in form, and is open at one end and closed at the other end. The open end serves as an inlet 110 into the main body 106. The main body 106 has a plurality of slots 112 within which the bristle beds 108 are mounted, with movement of the bristle beds 108 within the slots 112 causing air outlets 114 of the attachment 100 to be selectively opened between longitudinal edges of the bristle beds 108 and the slots 112, as will be discussed hereafter. Each air outlet 114 may be thought of as an aperture defined between the bristle bed 108 and the adjacent portion of the main body 106.
The bristle beds 108 may be thought of as movable members of the attachment 100, and each comprises a plurality of bristles 116 upstanding from a body portion 118. As can be seen from
The bristle beds 108 are thicker than the adjacent portions of the main body 106, such that innermost regions of the bristle beds 108 extend radially inwardly of innermost regions of the main body 106 when the body portion 118 is fully engaged with the main body 106, for example when the air outlets 114 are fully closed. Each bristle bed 108 is attached to an adjacent bristle bed 108 about the periphery of the attachment by a spring 120, with each spring 120 extending between radially innermost portions of the bristle beds 108. Although shown here as a single spring 120 connecting adjacent bristle beds 108, it will be appreciated that in practice multiple springs may be used to connect adjacent bristle beds 108, for example with springs spaced apart along a longitudinal extent of the bristle beds. Use of multiple springs may provide even opening of the air outlets 114 in use.
As illustrated in
When bristles 116 of a bristle bed 108 engage with hair in use, as illustrated in
The bristle beds 108 are movable within the slots 112 in response to engagement of hair with the attachment 100 such that movement of the bristle beds occurs in both a radial and a circumferential direction. This may provide greater flexibility of motion compared to either radial or circumferential motion alone.
As previously mentioned, each of the bristle beds 108 is linked to adjacent bristle beds 108 by a spring 120. Thus movement of one bristle bed 108 relative to the main body 106 also causes movement of the other bristle beds 108 relative to the main body 106. In particular, and as seen in
Thus air outlets 114 on a first side 122 of the attachment 100 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 114 on a second side 124 of the attachment 100 not engaged with hair in use may experience a decrease in cross-sectional area, with air outlets 114 on the second side 124 of the attachment 100 being closed in response to an increase in cross-sectional area of air outlets 114 on a first opposing side 122 of the attachment 100. This may enable a greater volume of airflow to be provided through one side of the attachment 100 relative to the other opposing side of the attachment 100, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process. The first 122 and second 124 sides of the attachment 100 are located on opposite sides of a central longitudinal axis C of the attachment 100.
The springs 120 return the bristle beds 108 to the rest configuration when disengaged from hair in use. An increase in cross-sectional area of an air outlet 114 may also reduce an internal air pressure of the main body 106, which may assist in moving the bristle beds 108 not in contact with hair to close their corresponding air outlets 114 under the action of the springs 120.
As seen in
In the embodiment of
A further embodiment of an attachment 200 for use with the main body 12 of
The attachment 200 of
Each of the first 204a and second 204b portions comprises a body portion 210, with a plurality of bristles 212 extending outwardly from the body portion 210. The first 204a and second 204b are pivotally, for example hingedly, connected such that the first 204a and second 204b portions are independently movable relative to one another.
As illustrated in
When bristles 212 of a bristle bed portion 204a, 204b engage with hair in use, as illustrated in
For example, in
The bristle bed portions 204a, 204b are movable within the slots 206 in response to engagement of hair with the attachment 200 such that movement of the bristle beds 204 occurs in a radial direction. This may enable movement of the bristle bed portions 204a, 204b in response to radial forces experienced by the bristle bed portions 204a, 204b in use, for example radial forces experienced in response to engagement of the bristle bed portions 204a, 204b with hair in use.
An air outlet 208 on a first side 214 of the attachment 200 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 208 on a second side 216 of the attachment 200 not engaged with hair in use may not experience an increase in cross-sectional area. This may enable a greater volume of airflow to be provided through one side of the attachment 200 relative to the other opposing side of the attachment 200, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process. The first 214 and second 216 sides of the attachment 200 are located on opposite sides of a central longitudinal axis C of the attachment 200.
As seen in
A further embodiment of an attachment 300 is illustrated schematically in
The attachment 300 of
Each bristle bed 304 comprises a body portion 310 with a plurality of bristles 312 extending outwardly from the body portion 310. The body portion 310 comprises inwardly facing projections 314 for contacting the main body 302 in use, and the inwardly facing projections 314 may control motion of the bristle beds 304 relative to the main body 302.
The main body 302 is generally cylindrical in form, and comprises a central column 316 and the plurality of slots 306. Each bristle bed 304 is connected to the central column 316 by a spring 318, as seen in
When bristles 312 of a bristle bed 304 engage with hair in use, as illustrated in
Movement of a bristle bed 304 within a slot 306 to increase a cross-sectional area of one of the air outlets 308 defined by the bristle bed 304 decreases a cross-sectional area of the other air outlet 308 defined by the bristle bed 304.
For example, in
The bristle beds 304 are movable within the slots 306 in response to engagement of hair with the attachment 300 such that movement of the bristle beds 304 occurs in both a radial and a circumferential direction. This may provide greater flexibility of motion compared to either radial or circumferential motion alone.
As mentioned previously, movement of a bristle bed 304 causes the bristle bed 304 to leave the slot 306 and move circumferentially around the periphery of the attachment to the slot 306 on the opposing side of the attachment 300. In particular, and as seen in
In such a manner, a cross-sectional area of the first air outlet 308a defined by the first bristle bed 304a is increased, whilst airflow through the second air outlet 308b defined by the first bristle bed 304a, and airflow through the air outlets 308 defined by the second bristle bed 304b, is blocked.
Thus an air outlet 308 on a first side 320 of the attachment 300 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 308 on a second side 322 of the attachment 300 not engaged with hair in use may experience a decrease in cross-sectional area, with air outlets 308 on the second side 322 of the haircare appliance 10 being closed in response to an increase in cross-sectional area of air outlets 308 on a first opposing side 320 of the attachment 300. This may enable a greater volume of airflow to be provided through one side of the attachment 300 relative to the other opposing side of the attachment 300, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process. The first 320 and second 322 sides of the attachment 300 are located on opposite sides of a central longitudinal axis C of the attachment 300.
A further embodiment of an attachment 400 is illustrated schematically in
The attachment 400 of
Each bristle bed 404 comprises a body portion 410 with a plurality of bristles 412 extending outwardly from the body portion 410. The bristle beds 404 are connected together by a continuous resilient band 414. Although shown here as a single continuous resilient band 414, it will be appreciated that a number of continuous resilient bands may be provided, for example spaced longitudinally along a length of the bristle beds 404, to provide even motion along the length of the bristle beds 404.
As seen from
When airflow flows through the attachment 400 in use, and the attachment is not engaged with hair, the internal air pressure of the attachment 400 forces the bristle beds 404 radially outwardly, but the resilience of the continuous resilient band 414 is such that the bristle beds 404 do not close the air outlets 408. This is referred to as a rest configuration, and is illustrated in
When bristles 412 of a bristle bed 404 engage with hair in use, as illustrated in
The bristle beds 404 are movable within the slots 406 in response to engagement of hair with the attachment 400 such that movement of the bristle beds occurs in both a radial and a circumferential direction. This may provide greater flexibility of motion compared to either radial or circumferential motion alone.
As previously mentioned, each of the bristle beds 404 is linked to adjacent bristle beds 404 by the continuous resilient band 414. When a bristle bed 404, for example the first bristle bed 404a of
Thus air outlets 408 on a first side 416 of the attachment 400 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 408 on a second side 418 of the attachment 400 not engaged with hair in use may experience a decrease in cross-sectional area, with air outlets 408 on the second side 418 of the attachment 400 being closed in response to an increase in cross-sectional area of air outlets 408 on a first opposing side 416 of the attachment 400. This may enable a greater volume of airflow to be provided through one side of the attachment 400 relative to the other opposing side of the attachment 400, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process. The first 416 and second 418 sides of the attachment 400 are located on opposite sides of a central longitudinal axis C of the attachment 400.
As seen in
A further embodiment of an attachment 500 is illustrated schematically in
The attachment 500 of
The first end 514 of the first bristle bed 504a is connected to the second portion 520 of the main body 502 by a rod 522 (illustrated in dashed lines). The first end 514 of the first bristle bed 504a is pivotally connected to the rod 522, whilst the rod 522 is pivotally connected to the second portion 520 of the main body 502. In such a manner the first bristle bed 504a is movable relative to the main body 502 in both radial and circumferential directions. Other bristle beds 504 are connected to the main body 502 in a similar way.
When airflow flows through the attachment 500 in use, and the attachment 500 is not engaged with hair, the internal air pressure of the attachment 500 forces the bristle beds 504 radially outwardly, and in particular each of the first 514 and second 518 ends of the first bristle bed 504a are biased radially outwardly by the airflow. This is referred to as a rest configuration, and is illustrated in
When bristles 512 of a bristle bed 504 engage with hair in use, as illustrated in
The bristle beds 504 are movable within the slots 506 in response to engagement of hair with the attachment 500 such that movement of the bristle beds occurs in both a radial and a circumferential direction. This may provide greater flexibility of motion compared to either radial or circumferential motion alone.
An air outlet 508 on a first side of the attachment 500 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 508 on a second side of the attachment 500 not engaged with hair in use may not experience an increase in cross-sectional area. This may enable a greater volume of airflow to be provided through one side of the attachment 500 relative to the other opposing side of the attachment 500, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process.
A further embodiment of an attachment 600 is illustrated schematically in
The attachment 600 comprises a main body 602, and a plurality of movable members 604 disposed in slots 606 formed on the main body 602.
Each movable member 604 is generally cylindrical in form, and is located within a corresponding slot 606 such that the movable members 604 each define two air outlets 608 with adjacent portions of the main body 602.
The main body 602 comprises a central column 610, and an outer surface of the central column 610 is shaped to define receiving spaces 612 for the movable members 604. The central column 610 thus has a generally sprocket-like cross-sectional profile, as seen in
A plurality of bristles 614 extend outwardly from the radially outer portions of the main body 602.
When airflow flows through the attachment 600 in use, and the attachment 600 is not engaged with hair, the internal air pressure of the attachment 600 forces the movable members 604 radially outwardly. This is referred to as a rest configuration, and is illustrated in
When a movable member 604 is engaged with hair in use, as illustrated in
The movable members 604 are movable within the slots 606 in response to engagement of hair with the attachment 600 such that movement of the movable members 604 occurs in a radial direction. This may enable movement of the movable members 604 in response to radial forces experienced by the movable members 604 in use, for example radial forces experienced in response to engagement of the movable members 604 with hair in use.
An air outlet 608 on a first side of the attachment 600 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 608 on a second side of the attachment 600 not engaged with hair in use may not experience an increase in cross-sectional area. This may enable a greater volume of airflow to be provided through one side of the attachment 600 relative to the other opposing side of the attachment 600, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process.
A further embodiment of an attachment 700 is illustrated schematically in
The attachment 700 of
Each bristle bed 704 comprises a body portion 710, with a plurality of bristles 712 extending outwardly from the body portion 710, and pivot points 714 extending from the body portion 710 in a direction orthogonal to that in which the bristles 712 extend. It will be appreciated that only a single pivot point 714 per bristle bed 704 is illustrated in
The main body 702 comprises a plurality of channels 716 within which respective pivot points 714 of bristle beds 704 are received. The channels 716 extend in generally radial directions from a central longitudinal axis C of the attachment 700, and have curved, tapered ends. The pivot points 714 are slidable within the channels 716, as will be described hereafter.
When airflow flows through the attachment 700 in use, and the attachment is not engaged with hair, the internal air pressure of the attachment 700 forces the bristle beds 704 radially outwardly, with the shape of the channels 716 such that the air outlets 708 are open to the same degree. This is referred to as a rest configuration, and is illustrated in
When bristles 712 of a bristle bed 704 engage with hair in use, as illustrated in
Given the arrangement of the pivot points 714 and the channel 716, movement of the bristle beds in a radial direction to vary cross-sectional areas of air outlets 708 defined by the same bristle bed 704 in the same manner, for example the cross-sectional areas either being both increased or both decreased, is also possible.
For example, as illustrated in
The bristle beds 704 are thus movable within the slots 706 in response to engagement of hair with the attachment 700 such that movement of the bristle beds occurs in both a radial and a circumferential direction. This may provide greater flexibility of motion compared to either radial or circumferential motion alone.
An air outlet 708 on a first side of the attachment 700 engaged with hair in use may experience an increase in cross-sectional area, whilst air outlets 708 on a second side of the attachment 700 not engaged with hair in use may not experience an increase in cross-sectional area. This may enable a greater volume of airflow to be provided through one side of the attachment 700 relative to the other opposing side of the attachment 700, which may provide increased efficiency, for example with less wasted airflow directed away from hair in use, and may provide increased styling control with airflow primarily directed only in a desired direction in use, thereby decreasing the risk of stray airflow affecting a styling process.
As seen in
Common to each of the attachments 100, 200, 300, 400, 500, 600, 700 described herein is that each attachment 100, 200, 300, 400, 500, 600, 700 has a movable member that at least partially defines an air outlet, movement of the movable member varies a cross-sectional area of the air outlet, and the movable member is movable in a radial direction relative to a central axis of the haircare appliance. This may vary a volume of airflow passing through the air outlet without the need to change a flow rate of the airflow generator. The movable member being movable in a radial direction relative to a central axis of the haircare appliance may enable movement of the movable member in response to radial forces experienced by the movable member in use, for example radial forces experienced in response to engagement of the movable member with hair in use.
Embodiments are also envisaged where, rather than the haircare appliance 10 comprising a handle unit 12 and an attachment 100, 200, 300, 400, 500, 600, 700 the haircare appliance 10 is a single-piece unit, for example taking the form of the combined handle unit 12 and attachment 100, 200, 300, 400, 500, 600, 700 previously described.
Whilst embodiments described herein have been depicted with “first” and “second” sides, it will be appreciated by a person skilled in the art that in practice whichever side of the attachment 100, 200, 300, 400, 500, 600, 700 is engaged with hair may be considered a “first side” as discussed herein, with the opposite side of the attachment 100, 200, 300, 400, 500, 600, 700 not engaged with hair considered a “second side” as discussed herein.
Similarly, it will be apparent to a person skilled in the art that the number of bristle beds of the attachments 100, 200, 300, 400, 500, 600, 700 described herein may vary from those shown, for example with attachments having at least two bristle beds envisaged.
Number | Date | Country | Kind |
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2020343.6 | Dec 2020 | GB | national |
Filing Document | Filing Date | Country | Kind |
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PCT/GB2021/053165 | 12/3/2021 | WO |