Attachment mechanism for hair care appliance

Abstract

An attachment mechanism for removably connecting a body of a hair care appliance with an accessory for a hair care appliance is described. The attachment mechanism includes: an actuator including a first engagement surface; an interface portion, the interface portion being removably coupleable to the actuator, the interface portion comprising a second engagement surface; and an elastically deformable seal; wherein the actuator is movable between an open position and a locked position; the actuator is biased toward the locked position such that the first engagement surface and the second engagement surface oppose each other when the interface portion is coupled to the actuator; when the interface portion is coupled to the actuator, the elastically deformable seal is in contact with the interface portion to apply a biasing force to the interface portion to bias the second engagement surface toward the first engagement surface such that the first and second engagement surfaces engage one another to prevent the interface portion from disengaging from the actuator.

Description

Background Technology

[0001] Hair care tools that use airflow to style hair are known. These tools can be used with a variety of attachments to achieve different hairstyles. For example, each attachment can have a different function, such as drying or curling. Summary of the Invention

[0002] According to a first aspect of the invention, an attachment mechanism is provided for removably connecting the body of a hair care appliance to an accessory for the hair care appliance, wherein the attachment mechanism includes: an actuator including a first engagement surface, and an interface portion removably engageable to the actuator, the interface portion including a second engagement surface angled relative to the first engagement surface; wherein the actuator is movable between an open position and a locked position (which may also be referred to herein as a closed position); and the actuator is biased toward the locked position such that when the interface portion is engaged with the actuator, the first engagement surface and the second engagement surface engage with each other to prevent the interface portion from disengaging from the actuator, and such that the biasing force provides a reaction force between the first surface and the second surface for pulling the actuator and the interface portion toward each other. By being configured in this way, the attachment mechanism ensures a strong and stable connection between the actuator and the interface portion, which in turn creates a strong and stable connection between the body of the hair care appliance and the associated accessory, allowing the accessory to be held more securely in place. For example, this can help ensure that the accessory remains in place when used for consistent hair styling, and helps prevent accidental removal of the accessory.

[0003] The optional features of the invention described herein may be applied alone or in any combination with any aspect of the invention.

[0004] Optionally, the first engagement surface may be a surface of the first engagement feature, and the first engagement feature may include a protrusion from the actuator. For example, the first engagement feature may include a wedge-shaped protrusion. In other embodiments, the first engagement surface may be a surface of the first engagement feature, and the first engagement feature may include a recess (e.g., a groove or slot) that enters the actuator. By being configured as a wedge-shaped protrusion, the first engagement feature may have a first surface (e.g., a lower surface) that can serve as the first engagement surface, and a second surface (e.g., an upper surface) that can be engaged by the second engagement feature, as described below with respect to a second aspect of the invention, to provide a "push-lock" operation of the attachment mechanism, thereby enabling the user to attach the interface portion to the actuator without rotating either component.

[0005] Optionally, the actuator may include a plurality of first engagement features, each having a corresponding first engagement surface. Providing a plurality of such first engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching accessories to the body. Multiple first engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components.

[0006] Optionally, the second engagement surface may be a surface of a second engagement feature, wherein the second engagement feature may include a protrusion projecting from the interface portion. In other embodiments, the second engagement surface may be a surface of a second engagement feature, wherein each second engagement feature may include a recess (e.g., a groove or slot) entering the interface portion.

[0007] Optionally, the interface portion may include multiple second engagement features, each having a corresponding second engagement surface. Providing multiple such second engagement features allows the interface portion to connect to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has more options for attaching accessories to the body. Multiple second engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components. For example, the number of second engagement features may be the same as the number of first engagement features, and they may be spaced in a similar manner to form a one-to-one connection between the first and second engagement features.

[0008] Optionally, the actuator can be slidably mounted on a support surface, such as an annular support surface. The support surface can allow the actuator to move between an open position and a locked position without misalignment or displacement relative to other parts of the attachment mechanism. The support surface can also be configured to allow for easier movement of the actuator and to have less friction.

[0009] In some embodiments, the support surface may be (directly or indirectly) connected to the body. In other embodiments, the support surface may be (directly or indirectly) connected to an accessory.

[0010] In some embodiments, the attachment mechanism may include a seal applied to a support surface. In this arrangement, it should be understood that the seal (particularly its upper surface) will provide the support surface on which the actuator, for example, can slide.

[0011] Optionally, the interface portion may be part of an accessory. However, in other embodiments, the interface portion may be part of the main body.

[0012] Optionally, the actuator may include an outwardly pointing protrusion that can be operated by a user to move the actuator from a locked position to an open position, thereby disengaging the interface portion from the actuator. This can help improve the ease of use of the attachment mechanism.

[0013] According to a second aspect of the invention, a hair care appliance is provided, comprising a body, an accessory removably connected to the body, and an attachment mechanism according to a first aspect of the invention. An actuator can be directly or indirectly mounted to either the body or the accessory, wherein an interface portion is respectively directly or indirectly mounted to either the accessory or the body.

[0014] According to a third aspect of the invention, an attachment mechanism is provided for removably connecting the body of a hair care appliance to an accessory for the hair care appliance, wherein the attachment mechanism includes: an actuator including a first engagement feature and an interface portion removably coupled to the actuator, the interface portion including a second engagement feature; wherein the actuator is movable between an open position and a locked position; and the actuator is biased toward the locked position such that when the interface portion moves into contact to engage with the actuator, the second engagement feature engages the first engagement feature to move the actuator toward the open position, and when the interface portion is coupled to the actuator, the actuator is in the locked position such that the first engagement feature and the second engagement feature engage with each other to prevent the interface portion from disengaging from the actuator. Thus, a second aspect of the invention provides an attachment mechanism wherein a "push-lock" mode for engaging the interface portion with the actuator is enabled, whereby the user only needs to push the interface portion and the actuator together to engage them, and the user does not need to rotate the actuator or the interface portion. This allows for the creation of ergonomic hair care devices, where users can more easily attach accessories to the main body of the device.

[0015] Optionally, the attachment mechanism may include a guide channel for aligning the first engagement feature and the second engagement feature when the interface portion is moved to contact the actuator. This makes the attachment mechanism easier to use because the user can use the guide channel to ensure that the first engagement feature and the second engagement feature are aligned when the interface portion is attached to the actuator.

[0016] Alternatively, the actuator can be moved relative to the guide channel.

[0017] Alternatively, when the interface portion is attached to the actuator, the second engagement feature may be at least partially positioned within the guide channel, such that the interface portion remains in a rotatable position relative to the locked position of the actuator. In this way, the guide channel helps ensure that the interface portion and the actuator portion are stably and securely attached to each other, which can provide a more secure connection between the accessory and the body of the hair care appliance.

[0018] Optionally, a guide channel may be formed in the outer ring. For example, the outer ring may accommodate other components of the attachment mechanism, such as actuators and support surfaces. In some embodiments, the outer ring may be attached to the body of the hair care appliance, but in other embodiments, the outer ring may be attached to an accessory.

[0019] Optionally, the first engagement feature and the second engagement feature have corresponding angled surfaces such that when the interface portion moves to contact the actuator, the actuator moves toward the open position. For example, one or both of the angled surfaces may include curved or circular surfaces.

[0020] Optionally, the actuator can be slidably mounted on a support surface. The support surface allows the actuator to move between an open and locked position without misalignment or displacement relative to other parts of the attachment mechanism. The support surface can also be configured to allow for easier actuator movement and have less friction. In some embodiments, the attachment mechanism may include a seal applied to the support surface. In this arrangement, it should be understood that the seal (particularly its upper surface) will provide the support surface on which the actuator, for example, can slide.

[0021] In some embodiments, when the interface portion is coupled to the actuator, the interface portion may contact a support surface. For example, a portion of the interface portion, such as a portion of the second engagement feature, may contact the support surface. By providing this, the support surface can serve as an additional support surface that supports the interface portion to provide further stability when the interface portion is coupled to the actuator.

[0022] Optionally, the actuator may be annular and may include a plurality of first engagement features spaced apart circumferentially around the actuator. Providing a plurality of such first engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching accessories to the body. Multiple first engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components.

[0023] Optionally, each first engagement feature may include a protrusion from the actuator. For example, each first engagement feature may include a wedge-shaped protrusion. In other embodiments, each first engagement feature may include a recess (e.g., a groove or slot) into the actuator. By being configured as a wedge-shaped protrusion, the first engagement feature may have a first surface (e.g., a lower surface) that can serve as a first engagement surface as described above with respect to the first aspect of the invention, and a second surface (e.g., an upper surface) that can be engaged by the second engagement feature when the interface portion moves to contact for engagement with the actuator, thereby providing a "push-lock" operation of the attachment mechanism, allowing the user to engage the interface portion with the actuator without rotating either component.

[0024] Optionally, the interface portion may include a cylindrical interface surface and a plurality of second engagement features spaced circumferentially around the interface surface. Providing a plurality of such second engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching accessories to the body. The plurality of second engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components. For example, the number of second engagement features may be the same as the number of first engagement features, and they may be spaced in a similar manner to form a one-to-one connection between the first and second engagement features.

[0025] Optionally, the second engagement feature or each of the second engagement features may include a protrusion extending from the interface portion. In other embodiments, the second engagement feature or each of the second engagement features may include a recess (e.g., a groove or slot) entering the interface portion.

[0026] Optionally, the second engagement feature may include a first portion configured (e.g., shaped, positioned) to engage the first engagement feature, and a second portion configured (e.g., shaped, positioned) to engage the guide channel. In some embodiments, the first and second portions may be portions of a single radially projecting portion from the interface portion. In other embodiments, the first and second portions may include independent radially projecting portions from the interface portion.

[0027] Optionally, the actuator may include an outwardly pointing protrusion that can be operated by a user to move the actuator from a locked position to an open position, thereby disengaging the interface portion from the actuator. This can help improve the ease of use of the attachment mechanism.

[0028] According to a fourth aspect of the invention, a hair care appliance is provided, comprising a body and an accessory removably connected to the body, and an attachment mechanism according to a third aspect of the invention. An actuator can be directly or indirectly mounted to either the body or the accessory, wherein an interface portion is respectively directly or indirectly mounted to either the accessory or the body.

[0029] According to a fifth aspect of the invention, a hair care appliance is provided, comprising a body, an accessory, and an attachment mechanism for removably attaching the accessory to the body; wherein the body has an outer wall having an elliptical cross-sectional shape perpendicular to its longitudinal axis; and the attachment mechanism includes an annular actuator positioned within the outer wall and rotatable about the longitudinal axis of the body. Thus, a third aspect of the invention provides a hair care appliance that is ergonomically designed, allowing for easier and more comfortable gripping by the user due to the elliptical cross-section of the outer wall. Because the actuator is annular and rotatable about the longitudinal axis of the attachment mechanism, the required longitudinal space for the attachment mechanism is reduced, and the length of the hair care appliance is also reduced.

[0030] Optionally, the actuator may include a plurality of first engagement features spaced circumferentially around the actuator. Providing a plurality of such first engagement features allows the attachment to be attached to the body in a plurality of different orientations (e.g., but not limited to a plurality of rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching the attachment to the body. A plurality of first engagement features can also strengthen the connection between the body and the attachment by providing a plurality of connection points between the components.

[0031] For example, the plurality of first engagement features may include at least two engagement features, such as three or four first engagement features. Optionally, the plurality of first engagement features may be evenly spaced around the circumference of the actuator. For example, in the case where the plurality of first engagement features includes four first engagement features, these first engagement features may be positioned at locations 90° apart from each other around the circumference of the actuator. This uniform spacing can help provide a stable connection between the body and the attachment, as well as provide rotational symmetry, thereby allowing the interface portion to be coupled to the actuator in multiple orientations. In some embodiments where the plurality of first engagement features includes four first engagement features, each first engagement feature may be positioned closer to the long axis of the outer wall cross-sectional shape than to the short axis of the outer wall cross-sectional shape. For example, the first engagement features may be arranged in two pairs, wherein the spacing between the first engagement features in one pair is smaller than the spacing between the first engagement features in another pair. In a particular example, within each pair, the first engagement features may be spaced about 60° apart, and the two pairs may be diametrically opposite each other across the actuator. This can provide an arrangement in which each first engagement feature is offset, for example, from the long axis of the outer wall cross-sectional shape by 30°. Positioning the body and accessories closer to the long axis in this manner helps to ensure proper alignment when the user connects them, and also ensures a stable connection by positioning the connection point closer to the axis where the accessory may be tilted relative to the body. This arrangement also provides rotational symmetry for the actuator, allowing the interface portion to be connected to the actuator in multiple orientations.

[0032] Optionally, each first engagement feature may include a protrusion from the actuator, such as a radial protrusion (e.g., having a wedge shape). In other embodiments, each first engagement feature may include a recess into the actuator (e.g., such as a groove or slot).

[0033] Optionally, the accessory may include a cylindrical interface surface for coupling with the actuator.

[0034] Optionally, the interface surface may include a plurality of second engagement features spaced circumferentially around the interface surface. Providing a plurality of such second engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options to attach attachments to the body. A plurality of second engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components. For example, the number of second engagement features may be the same as the number of first engagement features, and they may be spaced in a similar manner to form a one-to-one connection between the first and second engagement features.

[0035] Optionally, each second engagement feature may include a protrusion (e.g., a radial protrusion) from the interface portion. In other embodiments, each second engagement feature may include a recess (e.g., a groove or slot) in the interface surface.

[0036] Optionally, the body may include a circular opening in its end surface for receiving a cylindrical interface surface of an attachment. For example, the circular opening may be formed in an outer ring that may accommodate components of the attachment mechanism, such as actuators and support surfaces.

[0037] Optionally, the circular opening may include guide channels on its inner surface to ensure proper alignment of the attachment relative to the actuator for engagement, for example by aiding in the alignment of the first and second engagement features as the interface portion moves to contact the actuator. This makes the attachment mechanism easier to use, as the user can use the guide channels to ensure alignment of the first and second engagement features when engaging the interface portion with the actuator.

[0038] Optionally, the actuator can be slidably mounted on a support surface, such as an annular support surface. The support surface allows the actuator to move between an open position and a locked position without misalignment or displacement relative to other parts of the attachment mechanism. The support surface can also be configured to allow for easier actuator movement and have less friction. In some embodiments, the attachment mechanism may include a seal applied to the support surface. In this arrangement, it should be understood that the seal (particularly its upper surface) will provide the support surface on which the actuator can slide, for example.

[0039] Alternatively, the actuator can rotate between a locked position and an open position. For example, the locked position may be adapted to ensure that the accessory is securely attached to the body, and the open position may allow the user to remove the accessory from the body.

[0040] Optionally, the hair care appliance may further include a biasing element configured to actuate a rotatable actuator toward a locked position. This can help ensure that the accessory is not accidentally removed or displaced from the body.

[0041] Alternatively, the biasing element can be configured to bias the rotatable actuator relative to the support surface.

[0042] Optionally, the actuator may include an outwardly pointing protrusion that can be operated by a user to move the actuator from a locked position to an open position. This can help improve the ease of use of the attachment mechanism and allow the attachment to be separated from the body.

[0043] According to a sixth aspect of the invention, an attachment mechanism is provided for removably connecting the body of a hair care appliance to an accessory for the hair care appliance, wherein the attachment mechanism comprises: an actuator including a first engagement surface, an interface portion removably coupled to the actuator including a second engagement surface, and a resiliently deformable seal; wherein the actuator is movable between an open position and a locked position; the actuator is biased toward the locked position such that when the interface portion is coupled to the actuator, the first engagement surface and the second engagement surface are opposite each other; and when the interface portion is coupled to the actuator, the resiliently deformable seal contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second engagement surface toward the first engagement surface, such that the first engagement surface and the second engagement surface engage with each other to prevent the interface portion from disengaging from the actuator. By being configured in this way, the attachment mechanism can ensure a strong and stable connection between the actuator and the interface portion, which in turn creates a strong and stable connection between the body of the hair care appliance and the associated accessory, allowing the accessory to be held more securely in place. For example, this can help ensure that the attachment remains in place when used for a consistent hair styling, and helps prevent accidental removal of the attachment. In particular, the connection can be improved by the presence of a resiliently deformable seal, which can be used to securely engage the first engagement surface with the second engagement surface by applying a biasing force to the interface portion.

[0044] Optionally, the resiliently deformable seal may include a body portion and a projecting flange, which may be angled relative to the body portion and arranged such that when the interface portion is engaged with the actuator, the projecting flange contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second mating surface toward the first mating surface. For example, the projecting flange may be angled relative to the body portion and may be arranged at an angle less than 90°, such as about 45°. Of course, it should be understood that the projecting flange may be arranged in any suitable manner. By configuring it in this way, the shape of the resiliently deformable seal itself can contribute to the way the resiliently deformable seal applies a biasing force to the interface portion, thereby further strengthening the connection between the actuator and the interface portion, for example, to help ensure that the accessory is securely attached to the body.

[0045] Alternatively, the resilient seal can be made of silicone rubber. Therefore, the material of the resilient seal can help to further strengthen the connection between the actuator and the interface portion by applying a biasing force to the interface portion, for example, to help ensure that the accessory is securely attached to the body.

[0046] Optionally, the first and second mating surfaces can be configured such that they are substantially parallel to each other when the interface portion is attached to the actuator. Besides ensuring a strong engagement between the first and second mating surfaces, this arrangement facilitates manufacturing, as they can serve as reference points. In particular, by providing the first and second mating surfaces such that they are parallel to each other when the interface portion is attached to the actuator, it is easier to determine that the interface portion and the actuator are manufactured within predetermined manufacturing tolerances.

[0047] Optionally, in some embodiments, the first mating surface may include a first inclined portion angled relative to the second mating surface, and / or the second mating surface may include a second inclined portion angled relative to the first mating surface; the first inclined portion and / or the second inclined portion are used to align the first mating surface and the second mating surface when the interface portion is engaged with the actuator and the actuator moves toward the locking position. This arrangement can help ensure that the mating surfaces are aligned, especially when the actuator moves toward the locking position. For example, in the case where the first mating surface is the surface of the first mating portion and the second mating surface is the surface of the second mating portion, this can ensure that the mating portions are correctly aligned and do not abut each other when the actuator moves toward the locking position.

[0048] Optionally, the first engagement surface may be a surface of the first engagement feature, and the first engagement feature may include a protrusion from the actuator. For example, the first engagement feature may include a wedge-shaped protrusion. In other embodiments, the first engagement surface may be a surface of the first engagement feature, and the first engagement feature may include a recess or depression (e.g., a groove or slot) that enters the actuator. By being configured as a wedge-shaped protrusion, the first engagement feature may have a first surface (e.g., a lower surface) that can serve as the first engagement surface, and a second surface (e.g., an upper surface) that can be engaged by the second engagement feature described herein to provide a "push-lock" operation of the attachment mechanism, allowing the user to attach the interface portion to the actuator without rotating any part of it.

[0049] Optionally, the actuator may include a plurality of first engagement features, each having a corresponding first engagement surface. Providing a plurality of such first engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching accessories to the body. Multiple first engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components.

[0050] Optionally, the second engagement surface may be a surface of a second engagement feature, wherein the second engagement feature may include a protrusion projecting from the interface portion. In other embodiments, the second engagement surface may be a surface of a second engagement feature, wherein each second engagement feature may include a recess (e.g., a groove or slot) entering the interface portion.

[0051] Optionally, the interface portion may include multiple second engagement features, each having a corresponding second engagement surface. Providing multiple such second engagement features allows the interface portion to connect to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has more options for attaching accessories to the body. Multiple second engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components. For example, the number of second engagement features may be the same as the number of first engagement features, and they may be spaced in a similar manner to form a one-to-one connection between the first and second engagement features.

[0052] Optionally, the actuator can be slidably mounted on a support surface, such as an annular support surface. The support surface can allow the actuator to move between an open position and a locked position without misalignment or displacement relative to other parts of the attachment mechanism. The support surface can also be configured to allow for easier movement of the actuator and to have less friction.

[0053] Optionally, the actuator may include an outwardly pointing protrusion that can be operated by a user to move the actuator from a locked position to an open position, thereby disengaging the interface portion from the actuator. This can help improve the ease of use of the attachment mechanism.

[0054] According to a seventh aspect of the invention, a hair care appliance is provided, comprising a body, an accessory removably connected to the body, and an attachment mechanism according to a sixth aspect of the invention. An actuator and a resiliently deformable seal may be directly or indirectly mounted to either the body or the attachment, wherein an interface portion is respectively directly or indirectly mounted to either the attachment or the body.

[0055] According to an eighth aspect of the invention, an attachment mechanism is provided for removably connecting the body of a hair care appliance to an accessory for the hair care appliance, wherein the attachment mechanism comprises: an actuator including a first engagement feature having a first engagement surface and an interface portion removably coupled to the actuator, the interface portion including a second engagement feature having a second engagement surface; wherein the actuator is movable between an open position and a locked position; and the actuator is biased toward the locked position such that when the interface portion moves to contact with the actuator, the second engagement feature engages the first engagement feature to move the actuator toward the open position, and when the interface portion is coupled to the actuator, the actuator is in the locked position such that the first engagement surface and the second engagement surface are opposite each other. Thus, a second aspect of the invention provides an attachment mechanism wherein a "push-lock" mode for engaging the interface portion with the actuator is enabled, whereby the user only needs to push the interface portion and the actuator together to engage them, and the user does not need to rotate the actuator or the interface portion. This allows for the creation of ergonomic hair care devices, where users can more easily attach accessories to the main body of the device.

[0056] Optionally, the attachment mechanism may further include a resiliently deformable seal, wherein when the interface portion is attached to the actuator, the resiliently deformable seal contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second engagement surface toward the first engagement surface, such that the first and second engagement surfaces engage with each other to prevent the interface portion from detaching from the actuator. By providing a resiliently deformable seal as part of the attachment mechanism, a strong and stable connection can be ensured between the actuator and the interface portion, which in turn creates a strong and stable connection between the body of the hair care appliance and the associated attachment, allowing the attachment to be held more securely in place. For example, this can help ensure that the attachment remains in place when used for consistent hair styling, and helps prevent accidental removal of the attachment. In particular, the presence of a resiliently deformable seal can improve the connection by securely engaging the first engagement surface and the second engagement surface by applying a biasing force to the interface portion.

[0057] Optionally, the resiliently deformable seal may include a body portion and a projecting flange angled relative to the body portion and arranged such that when the interface portion is engaged with the actuator, the projecting flange contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second mating surface toward the first mating surface. For example, the projecting flange may be at an angle of less than 90° relative to the body portion, such as about 45°. By configuring it in this way, the shape of the resiliently deformable seal itself contributes to the way the resiliently deformable seal applies a biasing force to the interface portion, further strengthening the connection between the actuator and the interface portion, for example, to help ensure that the accessory is securely attached to the body.

[0058] Alternatively, the resilient seal can be made of silicone rubber. Therefore, the material of the resilient seal can help to further strengthen the connection between the actuator and the interface portion by applying a biasing force to the interface portion, for example, to help ensure that the accessory is securely attached to the body.

[0059] Optionally, the attachment mechanism may include a guide channel for aligning the first engagement feature and the second engagement feature when the interface portion is moved to contact the actuator. This makes the attachment mechanism easier to use because the user can use the guide channel to ensure that the first engagement feature and the second engagement feature are aligned when the interface portion is attached to the actuator.

[0060] Alternatively, the actuator can be moved relative to the guide channel.

[0061] Alternatively, when the interface portion is attached to the actuator, the second engagement feature may be at least partially positioned within the guide channel, such that the interface portion remains in a rotatable position relative to the locked position of the actuator. In this way, the guide channel helps ensure that the interface portion and the actuator portion are stably and securely attached to each other, which can provide a more secure connection between the accessory and the body of the hair care appliance.

[0062] Optionally, a guide channel may be formed in the outer ring. For example, the outer ring may accommodate other components of the attachment mechanism, such as actuators and support surfaces. In some embodiments, the outer ring may be attached to the body of the hair care appliance, but in other embodiments, the outer ring may be attached to an accessory.

[0063] Optionally, the outer ring may include a flange arranged to abut an edge extending outward from the interface portion when the interface portion is coupled to the actuator. Therefore, the flange can improve the stability of the interface portion when connected to the actuator.

[0064] Optionally, when the interface portion is attached to the actuator, the surfaces of the flanges and edges that are adjacent to each other are parallel to each other. This arrangement can facilitate manufacturing, where the surfaces of the flanges and the interface portion can be used as reference points. In particular, by arranging these surfaces such that they are parallel to each other when the interface portion is attached to the actuator, it is easier to ensure that the interface portion and the outer ring are manufactured within predetermined manufacturing tolerances.

[0065] Optionally, the first engagement feature and the second engagement feature have corresponding angled surfaces such that when the interface portion moves to contact the actuator, the actuator moves toward the open position. For example, one or both of the angled surfaces may include curved or circular surfaces.

[0066] Optionally, the actuator can be slidably mounted on a support surface, such as an annular support surface. The support surface allows the actuator to move between an open position and a locked position without misalignment or displacement relative to other parts of the attachment mechanism. The support surface can also be configured to allow for easier actuator movement and have less friction. For example, the support surface can be attached to the body.

[0067] Optionally, the first and second mating surfaces can be configured such that they are substantially parallel to each other when the interface portion is attached to the actuator. Besides ensuring a strong engagement between the first and second mating surfaces, this arrangement facilitates manufacturing, as they can serve as reference points. In particular, by providing the first and second mating surfaces such that they are parallel to each other when the interface portion is attached to the actuator, it is easier to determine that the interface portion and the actuator are manufactured within predetermined manufacturing tolerances.

[0068] Optionally, in some embodiments, the first mating surface may include a first inclined portion angled relative to the second mating surface, and / or the second mating surface may include a second inclined portion angled relative to the first mating surface; the first inclined portion and / or the second inclined portion are used to align the first mating surface and the second mating surface when the interface portion is engaged with the actuator and the actuator moves toward the locking position. This arrangement can help ensure that the mating surfaces are aligned, especially when the actuator moves toward the locking position. For example, in the case where the first mating surface is the surface of the first mating portion and the second mating surface is the surface of the second mating portion, this can ensure that the mating portions are correctly aligned and do not abut each other when the actuator moves toward the locking position.

[0069] Optionally, the actuator may include a plurality of first engagement features spaced circumferentially around the actuator. Providing a plurality of such first engagement features allows the interface portion to be attached to the actuator in a plurality of different orientations (e.g., but not limited to a plurality of rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options for attaching accessories to the body. A plurality of first engagement features can also strengthen the connection between the actuator and the interface portion by providing a plurality of connection points between the components.

[0070] Alternatively, the actuator may be annular. For example, multiple first engagement features may be distributed around the circumference of the annular actuator.

[0071] Optionally, each first engagement feature may include a protrusion from the actuator. For example, each first engagement feature may include a wedge-shaped protrusion. In other embodiments, each first engagement feature may include a recess (e.g., a groove or slot) into the actuator. By being configured as a wedge-shaped protrusion, the first engagement feature may have a first surface (e.g., a lower surface) that can serve as a first engagement surface as described above with respect to the first aspect of the invention, and a second surface (e.g., an upper surface) that can be engaged by the second engagement feature when the interface portion moves to contact for engagement with the actuator, thereby providing a "push-lock" operation of the attachment mechanism, allowing the user to engage the interface portion with the actuator without rotating either component.

[0072] Optionally, the interface portion may include a plurality of second engagement features spaced circumferentially around the interface surface. Providing a plurality of such second engagement features allows the interface portion to be connected to the actuator in multiple different orientations (e.g., but not limited to multiple rotational orientations relative to the actuator). This can make the hair care appliance more ergonomic, as the user has a greater number of options to attach attachments to the body. A plurality of second engagement features can also strengthen the connection between the actuator and the interface portion by providing multiple connection points between the components. For example, the number of second engagement features may be the same as the number of first engagement features, and they may be spaced in a similar manner to form a one-to-one connection between the first and second engagement features.

[0073] Optionally, the interface portion may include a cylindrical interface surface. For example, a plurality of second engagement features may be spaced apart around the circumference of the cylindrical interface surface.

[0074] Optionally, the second engagement feature may include a first portion configured (e.g., shaped, positioned) to engage the first engagement feature, and a second portion configured (e.g., shaped, positioned) to engage the guide channel. In some embodiments, the first and second portions may be portions of a single radially projecting portion from the interface portion. In other embodiments, the first and second portions may include independent radially projecting portions from the interface portion.

[0075] Optionally, the actuator may include an outwardly pointing protrusion that can be operated by a user to move the actuator from a locked position to an open position, thereby disengaging the interface portion from the actuator. This can help improve the ease of use of the attachment mechanism.

[0076] This invention includes combinations of the described aspects and optional features, unless such combinations are obviously not permitted or explicitly avoided. Attached Figure Description

[0077] Figures 1(a) and 1(b) show perspective views of the main body of a hair care appliance that can be used in embodiments of the present invention;

[0078] Figure 2 An exploded view of the attachment mechanism according to an embodiment of the present invention is shown;

[0079] Figure 3 It shows Figure 2 A cross-sectional view of the attachment mechanism, in which the interface portion is connected to the actuator;

[0080] Figure 4 It shows Figure 2 Top view of the attachment mechanism;

[0081] Figure 5 A cross-sectional view of the attachment mechanism, which is another embodiment of the present invention, is shown;

[0082] Figure 6 A top view of an actuator that can be used in another embodiment of the invention is shown;

[0083] Figure 7 An exploded view of the attachment mechanism according to a third embodiment of the present invention is shown;

[0084] Figure 8 It shows Figure 7 A cross-sectional view of the attachment mechanism, in which the interface portion is connected to the actuator;

[0085] Figure 9 A cross-sectional view of the attachment mechanism according to a fourth embodiment of the present invention is shown;

[0086] Figure 10 It shows Figure 9 Exploded view of the attachment mechanism;

[0087] Figure 11 It shows Figure 9 Additional sectional view of the attachment mechanism;

[0088] Figure 12 A cross-sectional view of the attachment mechanism according to a fifth embodiment of the present invention is shown; and

[0089] Figures 13(a) and 13(b) show cross-sectional views of the outer ring that can be used in embodiments of the present invention. Detailed Implementation

[0090] Figures 1(a) and 1(b) show perspective views of the body 1000 of a hair care appliance that can be used in embodiments of the present invention. The body 1000 includes an outer wall 1005 that serves as a handle for the hair care appliance, and has a fluid inlet 1015 at a first end 1010 and a fluid outlet 1025 at a second end 1020, with a fluid flow path passing through the body 1000 from the fluid inlet 1015 to the fluid outlet 1025. The outer wall 1005 defines an elongated tubular structure for the body 1000, wherein the cross-sectional shape of the body 1005 perpendicular to its longitudinal axis is elliptical or oval, making the body 1000 ergonomically designed for easy gripping by the user.

[0091] Body 1005 houses a motor configured to generate a flow of fluid (particularly air) along a fluid flow path. The fluid is optionally heated by a heater (not shown) before exiting body 1000 at fluid outlet 1025. Body 1000 may be connected to a power source via power cable 1030, which extends from a first end 1010 of body 1000. However, in some embodiments, body 1000 may further house one or more batteries, making power cable 1030 unnecessary.

[0092] The body includes a user interface that may include control settings for the hair care appliance. In this embodiment, the user interface is split, with a first portion 1040a of the user interface positioned toward a first end 1010 of the body 1000, and a second portion 1040b of the user interface positioned toward a second end 1020 of the body 1000. However, it should be understood that in other embodiments, the user interface may typically be located at a single location on the body 1000.

[0093] The body 1000 is configured to allow attachments to be removably attached thereto by including at least a portion of an attachment mechanism at or near its second end 1020. The attachment mechanism is described in more detail below. The attachment mechanism enables the user to create different hairstyles and adds additional functionality to the hair care appliance by allowing the attachment to be removed and replaced with an alternative attachment.

[0094] The following reference Figures 2 to 4 Describing an attachment mechanism 100 according to an embodiment of the present invention, wherein, Figure 2 An exploded view of the attachment mechanism 100 is shown; Figure 3 A cross-sectional view of the attachment mechanism 100 is shown, wherein the interface portion 120 is coupled to the actuator 110; Figure 4 A top view of the attachment mechanism 100 is shown. Common reference numerals are used in each figure to denote corresponding features. The attachment mechanism 100 can be used to removably connect an accessory for a hair care appliance to the body of the hair care appliance. For example, the hair care appliance can be the hair care appliance 1000 as described above with respect to Figures 1(a) and 1(b).

[0095] The attachment mechanism 100 includes an actuator 110 and an interface portion 120, wherein the interface portion 120 is removably coupled to the actuator 110. In this embodiment, the interface portion 120 may form part of an accessory, and the actuator 110 may be mounted on the body (directly or indirectly, as described herein), such that by coupling the interface portion 120 to the actuator 110, the accessory can be detachably connected to the body. However, it should be understood that in other examples of the invention, the interface portion may form part of the body of a hair care appliance, and the actuator may be mounted on an accessory.

[0096] As described above regarding Figure 1, such as Figure 2 At least a portion of the attachment mechanism of the attachment mechanism 100 shown is typically located at or near the second end 1020 of the body 1000.

[0097] In this specification, it should be understood that the direction from the actuator toward the interface portion is generally referred to as the "up" or "above" direction. The opposite direction, that is, the direction from the interface portion toward the actuator, is referred to herein as the "down" or "below" direction. For completeness, it should also be noted that "inside" or "inward" refers to the direction toward the longitudinal axis of the hair care appliance, attachment mechanism, and its components, while "outside" or "outward" refers to the direction away from the longitudinal axis of the attachment mechanism, hair care appliance, and its components.

[0098] The actuator 110 is a ring-shaped structure, typically in the form of a short cylinder. The actuator 110 includes a plurality of protrusions on its inner surface for engaging corresponding protrusions on the outer surface of the interface portion 120. Specifically, the actuator 110 includes a plurality of first engagement features 112, each first engagement feature 112 having the form of a wedge-shaped protrusion projecting from the inner surface of the actuator 110. Although not shown, the actuator 110 includes four first engagement features 112 spaced circumferentially around the actuator 110. Specifically, the four first engagement features 112 may be spaced circumferentially around the actuator 110 such that the first engagement features 112 have rotational symmetry about the longitudinal axis of the actuator 110. This allows the interface portion 120 to be connected to the actuator in multiple different orientations, and the plurality of first engagement features 112 also strengthens the connection between the actuator 110 and the interface portion 120. It should be understood that in other examples, different numbers of first engagement features 112 may be present.

[0099] Each wedge-shaped protrusion has a lower surface, referred herein as a first engagement surface 111 (which may be referred to herein as the first surface of the protrusion), and an upper surface 114 (which may be referred to herein as the second surface of the protrusion). The first engagement surface 111 and the upper surface 114 are angled relative to each other and angled relative to the plane of the actuator 110, which helps to facilitate the operation of the attachment mechanism 100 in a manner described in more detail below.

[0100] The actuator 110 is slidably mounted on a support surface 130, which is mounted or connected to the body of the hair care appliance. However, it should be understood that in other embodiments of the attachment mechanism 100, the support surface 130 may be mounted or connected to an accessory of the hair care appliance. The actuator 110 is rotatable on the support surface 130 between an open position and a locked position (which may also be referred to herein as a closed position), in which the interface portion 120 can be easily disengaged from the actuator 110, and in the locked position, the interface portion 120 is engaged with the actuator 110. The support surface 130 thereby ensures that the actuator 110 can move between the open and locked positions without misalignment or displacement relative to other parts of the attachment mechanism 100.

[0101] Because the actuator 110 is a ring-shaped structure rotatable about the longitudinal axis of the locking mechanism, the length of the hair care appliance to which the attachment mechanism 100 is applied can be reduced due to the reduced longitudinal space required by the attachment mechanism 100. Conversely, known devices require components of the attachment mechanism to be slidable in the longitudinal direction, which results in an increase in the length of the hair care appliance.

[0102] The support surface 130 has a plurality of ridges 132 arranged to abut the lower surface of the actuator 110. By reducing the contact area between the actuator 110 and the support surface 130, the plurality of ridges 132 reduce friction between these components, thereby allowing the actuator 110 to move more easily between the open and locked positions.

[0103] In some embodiments, the attachment mechanism 100 may include a seal applied to the support surface 130. In this arrangement, it should be understood that the seal (particularly its upper surface) will provide the support surface on which the actuator, for example, can slide.

[0104] To properly position the actuator 110 relative to the support surface 130, the actuator 110 includes a plurality of downwardly pointing protrusions 116 configured to mate with the support surface 130. This helps ensure proper alignment of the actuator 110 relative to other components of the attachment mechanism 100. To ensure proper positioning of the actuator 110 and to provide a limited range of movement defining an open and locked position, the support surface 130 includes one or more channels 131a, 131b at or around its outer edge, wherein each channel 131a, 131b is configured to receive a downwardly pointing protrusion 116. The arc length of the channels 131a, 131b defines the angular distance at which the actuator 110 can rotate. For example, when the downward-pointing protrusion 116 is adjacent to the first end of the channels 131a and 131b, the actuator 110 is in the open position, and when the downward-pointing protrusion 116 is adjacent to the second end of the channels 131a and 131b, the actuator 110 is in the locked position.

[0105] A first spring engagement portion 117 also protrudes from the lower edge of the actuator 110, and is configured to engage with one end of the spring 150. The other end of the spring 150 is received by a second spring engagement portion 133, which is a projection pointing outward from the support surface 130. By distributing the spring 150 between the actuator 110 and the support surface 130 in this way, the actuator 110 is biased toward a locked position. Of course, it should be understood that in other embodiments of the invention, any other suitable means of biasing the actuator 110 toward a locked position may be considered.

[0106] In addition to the first engagement feature 112, the actuator 110 also includes at least one positioning protrusion 118 on its inner surface, which helps ensure that the interface portion 120 remains aligned with the actuator 110 when the interface portion 120 is engaged with the actuator 110. The positioning protrusion 118 also helps to define the rotational limits of the actuator 110 in a manner similar to that of the channels 131a, 131b in the support surface 130. In particular, the lateral edges of the positioning protrusion 118 may abut against the protrusion from the interface portion 120 in one or both of the locked and open positions of the actuator 110, thereby limiting the rotational movement of the actuator 110 relative to the interface portion 120.

[0107] To allow a user to operate actuator 110, thereby moving the actuator from a locked position to an open position, actuator 110 includes a user-operable outwardly pointing protrusion 113. In this embodiment, the outwardly pointing protrusion 113 comprises a separate component fitted into a hole 115 in the actuator. This allows the outwardly pointing protrusion 113 to be made of a material that is visually or tactilely more pleasing to the user than the material comprising actuator 110, because the outwardly pointing protrusion 113 is visible and accessible to the user, while the rest of actuator 110 is typically located within an outer ring 140 attached to the body (or, in some embodiments, to an accessory), and is therefore invisible or inaccessible to the user. Of course, it should be understood that in other embodiments, the outwardly pointing protrusion 113 may be made of the same material as actuator 110, and / or the protrusion 113 and actuator 110 may be an integral part.

[0108] The interface portion 120 includes a cylindrical interface surface 123 configured to be received within or through an aperture of the annular actuator 110 when the interface portion is coupled to the annular actuator 110. In this embodiment, the cylindrical interface surface 123 extends downward from a lower or proximal end of the attachment for a hair care appliance; however, it should be understood that in other examples, the interface portion 120 may alternatively be part of the body, such that the cylindrical interface surface 123 may extend upward, for example, from a second end of the body. It is also conceivable that, in some embodiments, the actuator 110 may be received within the interface surface 123.

[0109] Interface portion 120 includes a plurality of radially extending protrusions from a cylindrical interface surface for engaging corresponding protrusions on the inner surface of actuator 110. Specifically, the interface portion includes a plurality of second engagement features, each of which interacts with a corresponding first engagement feature 112 of actuator 110, as described in more detail below. Each second engagement feature is formed by one or more protrusions extending generally between the top and bottom edges of the cylindrical interface surface 123, and the second engagement features are configured to interact with the first engagement feature 112 such that interface portion 120 can be coupled or locked to actuator 110 for attaching an accessory to a body. In other embodiments, it should be understood that the second engagement features may be provided as recesses (e.g., in the form of grooves, etc.) in the cylindrical interface surface 123.

[0110] exist Figure 2-4 In the illustrated embodiment, each second engagement feature includes a first portion 122a and a second portion 122b vertically spaced apart from the first portion 122a. The vertical spacing between the first portion 122a and the second portion 122b allows the second engagement feature to interact with the first engagement feature 112 to engage the interface portion 120 with the actuator 110, as described herein. In this example, the first portion 122a and the second portion 122b are independent radial protrusions from the cylindrical interface surface 13. In other embodiments, it is envisioned that the first portion 122a and the second portion 122b of the second engagement feature could be formed as a single protrusion, for example, having a web portion connecting the first portion 122a and the second portion 122b.

[0111] Although not shown, interface portion 120 includes four second engagement features circumferentially spaced around a cylindrical interface surface 123. Specifically, the four second engagement features may be circumferentially spaced around the interface surface 123 such that the second engagement features are rotationally symmetric about the longitudinal axis of interface portion 120. This allows interface portion 120 to be connected to actuator 110 in multiple different orientations. It should be understood that in other examples, different numbers of first engagement features 112 may be present. For example, the number of second engagement features may correspond to the number of first engagement features 112 provided to provide a robust connection between interface portion 120 and actuator 110.

[0112] When the interface portion 120 moves downward to contact and engage with the actuator 110, the first portion 122a of the second engagement feature engages the upper surface 114 of the first engagement feature 112, and the actuator 110 moves laterally toward the open position when the upper surface 114 of the first engagement feature 112 is at an angle relative to the plane of the actuator 110. This allows the interface portion 120 to engage with the actuator 110 via a "push-lock" mechanism, enabling the accessory to be attached to the body without requiring the user to manually rotate the actuator 110 or the interface portion 120. The lower surface of the first portion 122a is rounded to reduce the contact area between the first portion 122a of the second engagement feature and the upper surface 114 of the first engagement feature, thereby reducing friction.

[0113] The second engagement feature includes a second engagement surface 121, which in this embodiment is the upper surface of the first portion 122a of the second engagement feature. The second engagement surface 121 is angled relative to the first engagement surface 111 such that when the interface portion 120 is engaged with the actuator 110, the first engagement surface 111 and the second engagement surface 121 engage with each other to prevent the interface portion 120 from disengaging from the actuator 110 (i.e., to prevent the interface portion 120 from moving upwards), and a biasing force from the spring 150 provides a reaction force between the first engagement surface 111 and the second engagement surface 121 to pull the actuator 110 and the interface portion 120 toward each other. In some embodiments, when the interface portion 120 is engaged with the actuator 110, the lower surface of the second portion 122b of the second engagement feature may engage with the upper surface 114 of the first engagement feature 112. In this way, the first engagement feature 112 can be held between the first portion 122a and the second portion 122b of the second engagement feature, thereby ensuring that the interface portion 120 is securely connected to the actuator 110, and that the interface portion 120 cannot move in the upward or downward direction when the actuator 110 is in the locked position. Furthermore, when the interface portion 120 is connected to the actuator 110, the lower surface of the first portion 122a can contact the support surface 130, thereby further restricting the movement of the interface portion 120 relative to the actuator 110.

[0114] The interface portion 120 also includes one or more positioning features 124. Each positioning feature 124 includes a generally rectangular protrusion from the cylindrical interface surface 123, extending between the top and bottom edges of the interface surface 123. The positioning features 124 are configured such that when the interface portion 120 is coupled to an actuator, the lower surface of the positioning feature 124 contacts the support surface 130 to ensure that the interface portion 120 is correctly positioned relative to the actuator in the longitudinal direction.

[0115] The attachment mechanism 100 also includes an outer ring 140, which is arranged to receive the actuator 110 and the support surface 130, and to receive the interface portion 120 when it moves to contact and engage with the actuator 110. Figure 4 A top view of the attachment mechanism 100 is shown, illustrating that the outer ring 140 has an elliptical cross-sectional shape perpendicular to its longitudinal axis. The shape of the outer ring 140 is configured to correspond to the cross-sectional shape of the body of the hair care appliance, for example, by having the same dimensions as the outer wall of the body. In particular, when the outer ring 140 is attached to the body, it provides a continuation of the outer wall of the body to provide a consistent appearance.

[0116] The outer ring 140 has a lip 144 hanging from its lower surface for attaching the outer ring 140 to the body of the hair care appliance. The outer ring 140 also includes a hole 143 through its sidewall through which an outwardly pointing protrusion 113 of the actuator 110 can protrude for user operation. The upper end surface of the outer ring 140 includes a circular opening for receiving the interface portion 120, particularly for receiving the cylindrical interface surface 123.

[0117] To ensure proper alignment of the interface portion 120 relative to the actuator 110 for engagement, the outer ring 140 includes an inwardly pointing flange 145 on its inner surface at or around a circular opening. The flange 145 includes a plurality of guide channels 141 configured (e.g., by their positioning and sizing) to receive a second engagement feature that slides through the guide channels as the interface portion 120 moves to contact the actuator 110. The guide channels 141 are positioned to guide the second engagement feature into contact with a first engagement feature 112, thereby facilitating the attachment mechanism 100 to operate as a "push-lock" mechanism, where the user only needs to push the interface portion 120 toward the actuator 110 in the longitudinal direction, and neither component needs to be rotated when engaging the actuator 100 and the interface portion 120 (e.g., as in the case of a conventional bayonet connector, where the bayonet protrusion is mounted in an angled groove or slot). When the user moves the interface portion 120 in the longitudinal direction, the guide channel 141 facilitates the operation by ensuring that the second engagement feature is correctly aligned with the first engagement feature 112.

[0118] Similarly, the inwardly pointing flange includes a plurality of positioning channels 142, and the positioning feature 124 is configured to slide through the positioning channels 142 when the interface portion 120 moves to contact the actuator 110. Thus, the positioning channels 142 provide similar advantages to the guide channel 141 by helping to ensure that the second engagement feature is correctly aligned with the first engagement feature 112 when the user moves the interface portion 120 in the longitudinal direction.

[0119] Furthermore, when the interface portion 120 is coupled to the actuator 110, the second portion 122b of the second engagement feature is at least partially positioned within the guide channel 141, such that the interface portion 120 has a fixed rotational position relative to the locked position of the actuator 110. Similarly, when the interface portion 120 is coupled to the actuator 110, each positioning feature 124 is at least partially positioned within the positioning channel 142.

[0120] As in Figure 4 As can be seen, the attachment mechanism 100 includes four guide channels 141 in the flange 145 of the outer ring 140. Similarly, the attachment mechanism 100 includes four first engagement features 112 and four second engagement features, wherein each second engagement feature is arranged to slide through a corresponding guide channel 141 to interact with a corresponding first engagement feature 112. By providing multiple first and second engagement features in this way, the attachment mechanism 100 provides a robust and stable connection between the interface portion 120 and the actuator 110. Of course, it should be understood that in other embodiments, any suitable number of first and second engagement features can be provided, and the number of first engagement features does not necessarily need to be equal to the number of second engagement features.

[0121] Figure 4 The cross-sectional shape of the outer ring 140 is shown to have a major axis 146, which also corresponds to the major axis of the body for which the attachment mechanism 100 is configured. In this embodiment, each guide channel 141 is located at a position circumferentially spaced 30° from the major axis (and thus closer to the major axis than the minor axis), as shown at angle 147. It should be understood that the first engagement features 112 and the second engagement features are similarly spaced circumferentially around the actuator 110 and the interface surface 123. That is, the four first engagement features 112 are arranged in two pairs, wherein within each pair, the first engagement features 112 are spaced approximately 60° apart, and the two pairs are radially opposite each other on the actuator 110.

[0122] In this embodiment, the positioning channels 142 are arranged radially opposite each other on the long axis of the outer ring 140, such that they are positioned 180° apart. This arrangement helps to properly align the body and attachments of the hair care appliance when the user connects them, and ensures a stable connection between the body and attachments by positioning the connection point closer to the axis where the attachments may be tilted relative to the body. This arrangement also provides dual rotational symmetry of the attachment mechanism 100, allowing the interface portion 120 to be coupled to the actuator 110 in either of two orientations, thereby improving the ergonomics of the attachment mechanism 100 and the hair care appliance.

[0123] In other embodiments, the guide channels 141 may be equidistantly spaced around the circumference of the flange 145, for example, with corresponding placement of the first engagement feature 112 and the second engagement feature, or may have any other suitable distribution.

[0124] When the interface portion 120 is coupled to the actuator 110, the upper surface of the flange 145 is arranged to abut a corresponding edge 125 that extends outward from the upper edge of the interface surface 123. Specifically, the upper surface of the flange 145 is chamfered to engage with a corresponding chamfer on the lower edge of the edge 125 to help align the longitudinal axis of the interface portion 120 with the longitudinal axis of the actuator 110.

[0125] Figure 3 A cross-sectional view of the locking mechanism 100 is shown, in which the interface portion 120 is coupled to the actuator 110. Specifically, Figure 3 The actuator 110 is shown in the locked position, such that the interface portion 120 is securely attached to the actuator 110 and cannot be accidentally removed or displaced.

[0126] like Figure 3 As shown, when the interface portion 120 is connected to the actuator 110, the actuator 110 is biased toward the locked position by the spring 150, such that the first engagement feature 112 and the second engagement feature engage with each other to prevent the interface portion 120 from disengaging from the actuator 110. Specifically, the first engagement surface 111 and the second engagement surface 121 engage with each other, and it can be seen that the second engagement surface 121 is at an angle relative to the first engagement surface 111, such that the biasing force provided by the spring 150 (which biases the first engagement feature 112 toward the second engagement feature in the lateral direction, i.e., as...) Figure 3 (As shown from left to right) A reaction force is provided between the first mating surface 111 and the second mating surface 121, which acts to pull the actuator 110 and the interface portion 120 toward each other (i.e., the interface portion 120 is typically pulled downwards, as shown). Figure 3 (As shown). Conversely, if the second mating surface 121 is parallel to the first mating surface 111, these surfaces will simply slide over each other, and therefore the biasing force provided by the spring 150 will not provide such a reaction force.

[0127] Figure 3 It is also shown that the second portion 122b of the second engagement feature is at least partially positioned within the guide channel 141, such that the interface portion 120 is held in a fixed rotational position relative to the actuator 110 in a locked position. The lower surface of the first portion 122a of the second engagement feature contacts the support surface 130, thereby restricting the movement of the interface portion 120 in the longitudinal direction.

[0128] Figure 5A cross-sectional view of a second attachment mechanism 200 according to another embodiment of the invention is shown, wherein the interface portion is coupled to the actuator. Specifically, Figure 5 The actuator is shown in the locked position, such that the interface portion is securely attached to the actuator and cannot be accidentally removed or displaced. The features of the second locking mechanism 200 are the same as those described above. Figure 2-4 Where the described locking mechanism 100 is substantially the same, the same reference numerals are used.

[0129] In this embodiment, the second engagement feature includes a single protrusion from the cylindrical interface surface. That is, the second engagement feature includes a first portion 222a and a second portion 222b connected by a web portion 226, wherein the first portion 222a is arranged to interact with the first engagement feature 112, and the second portion 222b is vertically spaced from the first portion 222a.

[0130] When the interface portion is connected to the actuator, the actuator is biased toward the locked position (e.g., by a spring), causing the first engagement feature 112 and the second engagement feature to engage with each other to prevent the interface portion from disengaging from the actuator. Specifically, the first engagement surface 111 and the second engagement surface 121 (the upper surface of the first portion 222a) engage with each other, and it can be seen that the second engagement surface 121 is angled relative to the first engagement surface 111, such that a biasing force (which is used to bias the first engagement feature 112 laterally toward the second engagement feature, i.e., as shown) Figure 5 (As shown from left to right) A reaction force is provided between the first mating surface 111 and the second mating surface 121, which is used to pull the actuator and the interface portion toward each other (i.e., the interface portion is typically pulled downwards, as shown). Figure 5 (As shown). Conversely, if the second mating surface 121 is parallel to the first mating surface 111, these surfaces will simply slide over each other, and therefore the bias force will not provide such a reaction force.

[0131] Figure 5 It is also shown that the second portion 222b of the second engagement feature is at least partially positioned within the guide channel 141, such that the interface portion is held in a fixed rotational position relative to the locked position of the actuator.

[0132] In this embodiment of the attachment mechanism, around the entrance of the guide channel 141, the flange includes an inclined surface 246 that slopes downward toward the guide channel 241. This helps the user to position the second interface feature within the guide channel 241 when the interface portion is attached to the actuator. The upper portion of the second engagement portion is shaped to abut the inclined surface 246, and thus helps to prevent lateral or rotational movement of the interface portion when attached to the actuator.

[0133] Figure 6A top view of an alternative actuator 210 that can be used in embodiments of the invention is shown. This example includes four first engagement features 212 spaced evenly around the circumference of the actuator. That is, each first engagement feature 212 is positioned 90° away from the next engagement feature 212. It should be understood that the actuator 210 can be used in embodiments of attachment mechanisms where the second engagement features of the interface portion are similarly spaced around the circumference of the interface surface, and the guide channels are similarly spaced on the outer ring. Such an arrangement can provide fourfold symmetry of the attachment mechanism, which can allow the interface portion to be attached to the actuator 210 in any of four orientations, thereby improving the ergonomics of the attachment mechanism and hair care appliance. Of course, it should be understood that the actuator 210 can be used in embodiments where the interface portion has a different number of second engagement features (such as 1, 2, or 3 engagement features), each positioned on the interface surface to mate with the first engagement feature 210.

[0134] Now refer to Figure 7 and Figure 8 A third attachment mechanism 300, as another embodiment of the present invention, is described, wherein Figure 7 An exploded view of the attachment mechanism 300 is shown. Figure 8 A cross-sectional view of attachment mechanism 300 is shown. Where the features of the third attachment mechanism 300 are the same as those previously described (e.g., with respect to the first attachment mechanism 100), corresponding reference numerals are used and their descriptions are not repeated.

[0135] The attachment mechanism 300 includes an actuator 310 and an interface portion 320, wherein the interface portion 320 is removably coupled to the actuator 310. In this embodiment, the interface portion 320 may form part of an accessory, and the actuator 310 may be mounted on the body (directly or indirectly as described herein), such that by coupling the interface portion 320 to the actuator 310, the accessory can be detachably connected to the body. However, it should be understood that in other examples of the invention, the interface portion may form part of the body of a hair care appliance, and the actuator may be mounted on an accessory.

[0136] The actuator 310 is a ring-shaped structure, typically in the form of a short cylinder. The actuator 310 includes a plurality of protrusions on its inner surface for engaging recesses in the outer surface of the interface portion 320. Specifically, the actuator 310 includes a plurality of first engagement features 312, each being a generally hemispherical radial protrusion. Although not shown, the actuator 310 includes four first engagement features 312 spaced circumferentially around the actuator 310. Specifically, the four first engagement features 312 may be spaced circumferentially around the actuator 310 such that the first engagement features 312 have rotational symmetry about the longitudinal axis of the actuator 310 (e.g., by being spaced 90° apart from each other around the circumference of the actuator 310). This allows the interface portion 320 to be connected to the actuator in multiple different orientations, and the plurality of first engagement features 312 also strengthens the connection between the actuator 310 and the interface portion 320. It should be understood that in other examples, different numbers of first engagement features 312 may be present.

[0137] Each first engagement feature 312 has a lower surface (or first surface) and an upper surface 314 (or second surface), the lower surface being referred to herein as the first engagement surface 311. The upper surface 314 is a curved surface, and the first engagement surface 311 is angled relative to the plane of the actuator 310, which helps to facilitate the operation of the attachment mechanism 300, as described in more detail below.

[0138] The actuator 310 is slidably mounted on a support surface 330, which in this embodiment is the upper surface of a seal 360 fitted between the actuator 310 and the body of the hair styling appliance. The seal 360 helps ensure that fluid passing through the hair styling appliance exits only at the intended fluid outlet. It should be understood that in other embodiments of the attachment mechanism 100, the support surface 330 may be mounted or attached to an accessory of the hair styling appliance. The actuator 310 is rotatable on the support surface 330 between an open position and a locked position, in which the interface portion 320 can be easily disengaged from the actuator 310, and in the locked position, the interface portion 320 is engaged with the actuator 310. The support surface 330 thus ensures that the actuator 310 can move between the open and locked positions without misalignment or displacement relative to other parts of the attachment mechanism 300.

[0139] Because the actuator 310 is a ring-shaped structure rotatable about the longitudinal axis of the locking mechanism, the length of the hair care appliance to which the attachment mechanism 300 is applied can be reduced due to the reduced longitudinal space required by the attachment mechanism 300. Conversely, known devices require components of the attachment mechanism to be slidable in the longitudinal direction, which results in an increase in the length of the hair care appliance.

[0140] A first spring engagement portion 317 protrudes from the lower edge of the actuator 3110 and is configured to engage with one end of the spring 150. The other end of the spring 150 is received by a second spring engagement portion 333, which is a projection pointing outward from the body. By distributing the spring 150 between the actuator 310 and the body in this manner, the actuator 310 is biased toward a locked position. Of course, it should be understood that in other embodiments of the invention, any other suitable means for biasing the actuator 310 toward a locked position may be considered.

[0141] In order to hold the actuator 310 in the proper position and align it on the body, the body includes a cylindrical protrusion 1026 extending longitudinally from its second end, and the actuator 310 is configured to be coaxially mounted around the outer surface of the protrusion 1026.

[0142] To allow a user to operate the actuator 310, thereby moving the actuator from a locked position to an open position, the actuator 310 includes a user-operable outwardly pointing protrusion 313. In this embodiment, the outwardly pointing protrusion 313 is made of the same material as the actuator 310, and the protrusion 313 and the actuator 310 are formed as an integral part.

[0143] The interface portion 320 includes a cylindrical interface surface 323 configured to be received within or through an aperture of the annular actuator 310 when the interface portion is engaged with the annular actuator 310. In this embodiment, the cylindrical interface surface 323 extends downward from a lower or proximal end of the attachment for the hair care appliance, and the inner surface of the interface portion 320 may cover the outer surface of the cylindrical protrusion 1026 of the body. It should be understood that in other examples, the interface portion 320 may alternatively be part of the body, such that the cylindrical interface surface 323 may extend upward, for example, from a second end of the body. It is also conceivable that, in some embodiments, the actuator 310 may be received within the interface surface 323.

[0144] Interface portion 320 includes a plurality of second engagement features 322 in the form of recesses or grooves entering a cylindrical interface surface 323, such that each second engagement feature 322 is configured to receive a corresponding first engagement feature 312 when interface portion 320 is coupled to actuator 310. Although not shown, interface portion 320 includes four second engagement features circumferentially spaced around the cylindrical interface surface 323. Specifically, the four second engagement features may be circumferentially spaced around the interface surface 323 such that the second engagement features have rotational symmetry about the longitudinal axis of interface portion 320 (e.g., by being 90° circumferentially spaced around the interface surface 323). This allows interface portion 320 to be connected to actuator 310 in multiple different orientations. It should be understood that in other examples, different numbers of first engagement features 312 may be present. For example, the number of second engagement features 322 may correspond to the number of first engagement features 312 provided to provide a secure connection between interface portion 320 and actuator 310.

[0145] The second engagement feature 322 includes a recess or groove entering the cylindrical interface surface 323, which generally extends along the interface surface 323 in a direction parallel to the longitudinal axis of the interface portion 320. The sidewalls of the groove have circumferential or transverse protrusions 327 that gradually narrow or contract in the upward direction, forming a generally triangular or wedge shape. The upper surface of the protrusion 327 provides a second engagement surface 321, and the lower surface of the protrusion 327 provides a guide surface 328.

[0146] When the interface portion 320 moves downward and contacts the actuator 310 for engagement, the first engagement feature 312 engages the second engagement feature 322. Specifically, the upper surface 314 of the first engagement feature 312 engages the guide surface 328. Because the guide surface 328 is angled relative to the plane of the actuator 310, and the upper surface 314 of the first engagement feature 312 is curved, the downward movement of the interface portion 320 serves to laterally move the actuator 310 from the locked position toward the open position. This allows the interface portion 320 to engage with the actuator 310 via a "push-lock" mechanism, enabling attachments to be attached to the body without requiring manual rotation of the actuator 310 or the interface portion 320 by the user. The curved upper surface 314 of the first engagement feature 312 reduces the contact area between the first engagement feature 312 and the second engagement feature 322, and thus reduces friction.

[0147] The second engagement surface 321 is also angled relative to the plane of the actuator 310 and relative to the first engagement surface 311, such that when the interface portion 320 is engaged with the actuator 310, the first engagement surface 311 and the second engagement surface 321 engage with each other to prevent the interface portion 320 from disengaging from the actuator 310 (i.e., to prevent the interface portion 320 from moving upward), and such that the biasing force from the spring 150 provides a reaction force between the first engagement surface 311 and the second engagement surface 321, the reaction force being used to pull the actuator 310 and the interface portion 320 toward each other.

[0148] When the interface portion 320 is connected to the actuator 310, the lower end face of the cylindrical interface surface 323 can contact the support surface 330, thereby restricting the movement of the interface portion 320 relative to the actuator 310.

[0149] The attachment mechanism 300 also includes an outer ring 340, which is arranged to receive the actuator 310 and the support surface 330, and to receive the interface portion 320 when it moves to contact and engage with the actuator 310. The shape of the outer ring 340 can be configured to correspond to the cross-sectional shape of the body of the hair care appliance, for example, by having the same dimensions as the outer wall of the body. For example, when the outer ring 340 is attached to the body, it provides a continuation of the outer wall of the body to provide a consistent appearance.

[0150] The outer ring 340 also includes a hole 343 through its sidewall, through which an outwardly pointing protrusion 313 of the actuator 310 can protrude for user operation. The upper surface of the outer ring 340 includes a circular opening for receiving the interface portion 320, particularly for receiving the cylindrical interface surface 323.

[0151] To ensure proper alignment of the interface portion 320 with respect to the actuator 310 for engagement, the outer ring 340 includes an inwardly pointing flange 345 on or around the circular opening on its inner surface. This helps ensure that the longitudinal axis of the interface portion 320 is aligned with the longitudinal axis of the other elements of the attachment mechanism 300 when the user moves the interface portion 320 longitudinally.

[0152] Now refer to Figures 9 to 11 A fourth attachment mechanism 400, as another embodiment of the present invention, is described, wherein, Figure 9 A cross-sectional view of the attachment mechanism 400 is shown. Figure 10 An exploded view of the attachment mechanism 400 is shown, and Figure 11 An additional sectional view of attachment mechanism 400 is shown. Where the features of the fourth attachment mechanism 400 are the same as those previously described (e.g., with respect to the first attachment mechanism 100), corresponding reference numerals are used and their descriptions are not repeated.

[0153] The attachment mechanism 400 includes an actuator 410 and an interface portion 420, wherein the interface portion 420 is removably coupled to the actuator 410. In this embodiment, the interface portion 420 may form part of an accessory, and the actuator 410 may be mounted (directly or indirectly) on the body such that the accessory can be detachably connected to the body by coupling the interface portion 420 to the actuator 410. However, it should be understood that in other examples of the invention, the interface portion may form part of the body of a hair care appliance, and the actuator may be mounted on an accessory.

[0154] Typically, the fourth attachment mechanism 400 is the same as the first attachment mechanism 100 described above. However, the fourth attachment mechanism 400 differs in the arrangement of the first and second interface surfaces and also includes an elastically deformable seal 460. The configuration and effects of these features are described below.

[0155] In this embodiment, the actuator 410 includes a plurality of first engagement features 412, which are wedge-shaped protrusions. Each wedge-shaped protrusion includes an upper surface 114 that is substantially the same as that of the first attachment mechanism 100. However, in the attachment mechanism 400, the first engagement surface 411 is parallel to the plane of rotation of the actuator 410 and is not angled to the plane of rotation of the actuator 410 as in the first attachment mechanism 100 described above.

[0156] Accordingly, as the surface of the first portion 422a of the second engagement feature located on the interface portion 420, the second engagement surface 421 is parallel to the first engagement surface 411. When the actuator 410 moves toward the locked position (by rotating on the support surface 130), the first engagement surface 411 and the second engagement surface 421 slide past each other. When the actuator 410 is in the locked position, as... Figure 9 As shown, the first mating surface 411 and the second mating surface 421 are opposite to each other.

[0157] To ensure that the first engagement surface 411 and the second engagement surface 421 engage with each other to stabilize the connection between the actuator 410 and the interface portion 420, the attachment mechanism 400 includes a resiliently deformable seal 460. Figure 11 The diagram shows a cross-section of the seal 460. When the interface portion 420 is connected to the actuator 410, the elastically deformable seal 460 is located between the bottom surface of the interface portion 420 and the support surface 130, and is thereby compressed. However, since the seal 460 is elastically deformable, it applies a biasing force to the interface portion 420, thereby biasing the second engagement surface 421 toward the first engagement surface 411, such that the first engagement surface 411 and the second engagement surface 421 engage with each other, thereby preventing the interface portion 420 from being removed from the actuator 410.

[0158] The elastically deformable seal 460 is made of an elastic material, particularly silicone rubber, which allows the material itself to contribute to its elastic deformability. Furthermore, as... Figure 11 As shown, the resiliently deformable seal 460 includes a body portion 462 and a projecting flange 464, wherein the flange 464 is angled relative to the body portion 462. Specifically, the flange 464 extends upward away from the body portion 462 at an angle of approximately 45°. Due to this arrangement, the shape of the resiliently deformable seal 460 itself contributes to the manner in which the resiliently deformable seal 460 applies a biasing force to the interface portion 420, further strengthening the connection between the actuator 410 and the interface portion 420, for example, to help ensure that the accessory is securely attached to the body.

[0159] The second mating surface 421 includes an inclined portion 421a, which is angled relative to the rest of the second mating surface 421. For example... Figure 9 As shown, the inclined portion 421a is positioned at the leading edge of the second engagement surface 421, that is, at the end of the second engagement surface 421 that first interacts with or is opposite to the first engagement surface 411 when the actuator 410 moves toward the locked position. By providing the inclined portion 421a in this way, it is ensured that the first engagement feature 412 is correctly aligned with and passes over the second engagement feature, such that when the actuator 410 moves toward the locked position, the first engagement surface 411 and the second engagement surface 421 slide past each other.

[0160] Figure 12 A cross-sectional view of a fifth attachment mechanism 500, which is another embodiment of the present invention, is shown. Where the features of the fourth attachment mechanism 500 are the same as those previously described (e.g., with respect to the first attachment mechanism 100), corresponding reference numerals are used and their descriptions are not repeated.

[0161] As in the previously described embodiment, attachment mechanism 500 includes an actuator and an interface portion, wherein the interface portion is removably coupled to the actuator. In this embodiment, the interface portion may form part of an accessory, and the actuator may be mounted (directly or indirectly) on the body, such that the accessory can be removably attached to the body by coupling the interface portion to the actuator. However, it should be understood that in other examples of the invention, the interface portion may form part of the body of a hair care appliance, and the actuator may be mounted on an accessory.

[0162] Typically, the fifth attachment mechanism 500 is the same as the fourth attachment mechanism 400 described above. However, the difference in the fifth attachment mechanism 500 lies in the arrangement of the first interface surface and the second interface surface.

[0163] In this embodiment, each first engagement feature 512 is a wedge-shaped protrusion, comprising an upper surface 114 substantially identical to that of the first attachment mechanism 100, and a first engagement surface 511. In this attachment mechanism 500, the first engagement surface 511 is substantially parallel to the plane of rotation of the actuator, similar to the fourth attachment mechanism 400 described above. However, the first engagement surface 511 includes an inclined portion 511a, which is angled relative to the remainder of the first engagement surface 511. Figure 12 As shown, the inclined portion 511a is positioned at the leading edge of the first engagement surface 511, that is, at the end of the first engagement surface 511 that first interacts with or is opposite to the second engagement surface 521 when the actuator moves toward the locked position. By providing the inclined portion 511a in this way, it can be ensured that the first engagement feature 522a is correctly aligned with and passes over the second engagement feature 521, such that when the actuator moves toward the locked position, the first engagement surface 511 and the second engagement surface 521 slide past each other.

[0164] In this embodiment, the second engagement surface 521 is also parallel to the plane of rotation of the actuator and parallel to the first engagement surface 511. As the actuator moves toward the locked position (by rotating on the support surface), the first engagement surface 511 and the second engagement surface 521 slide past each other. When the actuator is in the locked position, as... Figure 12 As shown, the first mating surface 511 and the second mating surface 521 are opposite to each other.

[0165] Figure 13a and 13b A cross-sectional view of a second outer ring 640 that can be used in embodiments of the invention is shown. Specifically, Figure 13a A cross-sectional view of the individual outer ring 640 is shown, and Figure 13b A cross-sectional view of an outer ring 640 in which the interface portion 620 is mounted is shown. Typically, the outer ring 640 is the same as the outer ring 140 described above (e.g., regarding...). Figure 2 and Figure 4 Therefore, a description of all features will not be repeated. However, refer to the following... Figure 13a and Figure 13b The different features of the outer ring 640 are described. It should also be understood that the interface portion 620 can be substantially as described above with respect to any of the foregoing embodiments, and the interface portion 620 differs only in how it interacts with the outer ring 640, as described below.

[0166] The outer ring 640 includes an inwardly pointing flange 645 on its inner surface at or around a circular opening in its top side. The flange 645 includes a plurality of guide channels 141 configured (e.g., by means of their positioning and sizing) to receive second engagement features that slide through the guide channels 141 when the interface portion 620 moves to contact an actuator (not shown). Similarly, the inwardly pointing flange 645 includes a plurality of positioning channels 142, and the positioning features of the interface portion 620 are configured to slide through the positioning channels 142 when the interface portion 620 moves to contact the actuator.

[0167] In this example, the upper surface of flange 645 is perpendicular to the outer wall of its protruding outer sheath 640. For example... Figure 13b As shown, when the interface portion 620 is coupled to the actuator, the upper surface of the flange 645 is arranged to abut a corresponding edge 625 extending outward from the upper edge of the interface portion 620. Specifically, the upper surface of the flange 645 and the abutting surfaces of the edge 625 are parallel to each other. This arrangement facilitates manufacturing, as the upper surface of the flange 645 and the edge 625 of the interface portion 620 can serve as reference points. In particular, by arranging these surfaces such that they are parallel to each other and perpendicular to the longitudinal axis of the attachment mechanism, it is easier to ensure that the interface portion 620 and the outer ring 640 are manufactured within predetermined manufacturing tolerances when the interface portion 620 is coupled to the actuator, thus helping to ensure the stability of the attachment mechanism.

[0168] The features disclosed in the foregoing description, or in the following claims, or in the accompanying drawings, are expressed in their particular form or according to means for performing the disclosed functions, or methods or processes for obtaining the disclosed results, and may, where appropriate, be used alone or in any combination of these features to implement the invention in its various forms.

[0169] While the invention has been described in conjunction with the exemplary embodiments described above, many equivalent modifications and variations will be apparent to those skilled in the art upon presentation of this disclosure. Therefore, the exemplary embodiments of the invention set forth above are to be considered illustrative rather than restrictive. Various changes may be made to the described embodiments without departing from the spirit and scope of the invention.

[0170] To avoid any doubt, any theoretical explanations provided herein are intended to enhance the reader's understanding. The inventor does not wish to be bound by any of these theoretical explanations.

[0171] Any chapter headings used in this article are for organizational purposes only and should not be construed as limiting the subject matter described.

[0172] Throughout this specification, including the following claims, unless the context otherwise requires, the words “comprising” and “including”, as well as variations such as “comprising,” “including,” and “including,” shall be understood to imply inclusion of the said integer or step or group of steps, but not to exclude any other integer or step or group of steps.

[0173] It should be noted that, as used in the specification and appended claims, the singular forms “a,” “an,” and “the” include plural indicators unless the context clearly specifies otherwise. A range may be expressed herein as from “about” a particular value and / or to “about” another particular value. When expressing such a range, another embodiment includes from one particular value and / or to another particular value. Similarly, when a value is expressed as an approximation using the antecedent “about,” it should be understood that the particular value forms another embodiment. The term “about” in relation to numerical values ​​is optional and means, for example, + / - 10%.

[0174] The following numbered clauses may also be used to interpret some of the embodiments described herein:

[0175] 1. An attachment mechanism for removably connecting a body of a hair care appliance to an accessory for said hair care appliance, wherein said attachment mechanism comprises:

[0176] An actuator, the actuator including a first engagement surface, and

[0177] An interface portion, removably connectable to the actuator, includes a second engagement surface (121) angled relative to the first engagement surface; wherein

[0178] The actuator is movable between an open position and a locked position; and

[0179] The actuator is biased toward the locked position such that when the interface portion is attached to the actuator, the first engagement surface and the second engagement surface engage with each other to prevent the interface portion from disengaging from the actuator, and the biasing force provides a reaction force between the first engagement surface and the second engagement surface, which is used to pull the actuator and the interface portion toward each other.

[0180] 2. The attachment mechanism according to Clause 1, wherein the first engagement surface is the surface of the first engagement feature, and wherein:

[0181] The first engagement feature includes a protrusion from the actuator, or

[0182] The first engagement feature includes a recess in the actuator.

[0183] 3. The attachment mechanism according to Clause 2, wherein the first engagement feature includes a wedge-shaped protrusion.

[0184] 4. The attachment mechanism according to any one of the preceding clauses, wherein the actuator includes a plurality of first engagement features, each first engagement feature having a corresponding first engagement surface.

[0185] 5. The attachment mechanism according to any one of the preceding clauses, wherein the second engagement surface is the surface of the second engagement feature, and wherein:

[0186] The second engagement feature includes a protrusion extending from the interface portion, or

[0187] The second engagement feature includes a recess in the interface portion.

[0188] 6. The attachment mechanism according to any one of the preceding clauses, wherein the interface portion includes a plurality of second engagement features, each second engagement feature having a corresponding second engagement surface.

[0189] 7. The attachment mechanism according to any one of the preceding clauses, wherein the actuator is slidably mounted on the support surface.

[0190] 8. The attachment mechanism according to any one of the preceding clauses, wherein the actuator includes an outwardly pointing protrusion operable by a user to move the actuator from a locked position to an open position, thereby disengaging the interface portion from the actuator.

[0191] 9. A hair care appliance comprising a body, an accessory removably attached to the body, and an attachment mechanism according to any one of clauses 1 to 8.

[0192] 10. The hair care appliance as described in Clause 9, wherein:

[0193] The actuator is mounted to the body, and the interface portion is mounted to the accessory; or

[0194] The actuator is installed in the accessory, and the interface portion is installed in the main body.

Claims

1. An attachment mechanism for removably connecting a body of a hair care appliance to an accessory for said hair care appliance, wherein said attachment mechanism comprises: Actuator, which includes a first engagement surface, An interface portion, removably connectable to the actuator, includes a second engagement surface, and A seal that can deform elastically; in The actuator is movable between an open position and a locked position; The actuator is biased toward the locked position such that when the interface portion is connected to the actuator, the first engagement surface and the second engagement surface are opposite to each other; and When the interface portion is connected to the actuator, the elastically deformable seal contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second mating surface toward the first mating surface, such that the first and second mating surfaces engage with each other to prevent the interface portion from disengaging from the actuator.

2. The attachment mechanism according to claim 1, wherein, The resiliently deformable seal includes a body portion and a projecting flange arranged such that when the interface portion is coupled to the actuator, the projecting flange contacts the interface portion to apply a biasing force to the interface portion, thereby biasing the second mating surface toward the first mating surface.

3. The attachment mechanism according to claim 1 or claim 2, wherein, The elastically deformable seal is made of silicone rubber.

4. The attachment mechanism according to any one of the preceding claims, wherein, The first engagement surface and the second engagement surface are configured such that when the interface portion is coupled to the actuator, the first engagement surface and the second engagement surface are substantially parallel to each other.

5. The attachment mechanism according to claim 4, wherein: The first mating surface includes a first inclined portion at an angle relative to the second mating surface, and / or The second mating surface includes a second inclined portion that is angled relative to the first mating surface; For aligning the first engagement surface and the second engagement surface when the interface portion is coupled to the actuator and the actuator moves toward the locking position.

6. The attachment mechanism according to any one of the preceding claims, wherein, The first mating surface is the surface of the first mating feature, and wherein: The first engagement feature includes a protrusion from the actuator, or The first engagement feature includes a recess in the actuator.

7. The attachment mechanism according to claim 6, wherein, The first engagement feature includes a wedge-shaped protrusion.

8. The attachment mechanism according to any one of the preceding claims, wherein, The actuator includes a plurality of first engagement features, each having a corresponding first engagement surface.

9. The attachment mechanism according to any one of the preceding claims, wherein, The second mating surface is the surface of the second mating feature, and wherein: The second engagement feature includes a protrusion extending from the interface portion, or The second engagement feature includes a recess in the interface portion.

10. The attachment mechanism according to any one of the preceding claims, wherein, The interface portion includes a plurality of second engagement features, each second engagement feature having a corresponding second engagement surface.

11. The attachment mechanism according to any one of the preceding claims, wherein, The actuator is slidably mounted on the support surface.

12. The attachment mechanism according to any one of the preceding claims, wherein, The actuator includes an outwardly pointing protrusion that can be operated by a user to move the actuator from the locked position to the open position for disengaging the interface portion from the actuator.

13. A hair care appliance comprising a body, an accessory removably connected to said body, and an attachment mechanism according to any one of claims 1 to 12.

14. The hair care appliance according to claim 13, wherein: The actuator and the elastically deformable seal are mounted to the body, and the interface portion is mounted to the accessory; or The actuator and the elastically deformable seal are mounted to the accessory, and the interface portion is mounted to the main body.

Images