A door handle assembly for slidable actuation

Abstract

The present invention relates to a door handle assembly adapted for slidable actuation. The present invention alleviates one or more issues associated with presently available door handle assemblies.

Description

TITLEA door handle assembly for slidable actuationFIELD OF THE INVENTION

[0001] The present invention relates to controlling the locking and unlocking of doors. Particularly, the present invention relates to door handle systems. More particularly, the present invention relates to a door handle system that is slidably vertically.BACKGROUND TO THE INVENTION

[0002] Any reference to background art herein is not to be construed as an admission that such art constitutes common general knowledge in Australia or elsewhere.

[0003] Doors form an integral part of housing and buildings. Doors are utilized for privacy and for gaining entry or access to certain areas. Doors are also utilized to prevent entry or access to certain areas.

[0004] There is a need for compact, durable and easily usable door locking and unlocking systems. Widely available door handles utilize knob or lever type door handles that are actuated to extend or retract a door latch. However, a problem with these types of door handles is that they can be difficult to grasp and actuate. Particularly, people with arthritic conditions can have particular difficulty with actuation of these handles. It would be advantageous to provide a door handle assembly that can be more easily actuated.

[0005] Additionally, prior art handles are required to protrude from the door and this can create an impact and / or hook hazard. Furthermore, these protruding parts can be damaged and / or the damage of such protruding parts can damage the internal components thereof.

[0006] Furthermore, it will be appreciated that a compact door handle system or assembly that is compact would also be advantageous.

[0007] It would be advantageous to address one or more of the above issues and / or to provide the consumer with a commercial alternative to the presently available solutions.SUMMARY OF THE INVENTION

[0008] In a first aspect, although it need not be the only or indeed the broadest aspect, the invention resides a door handle assembly for sliding actuation comprising:a case;an actuation button adapted to slide relative to the case;an actuation assembly adapted to engage the actuation button, and configured to convert linear motion to motion that is substantially orthogonal thereto; anda latch assembly adapted to engage the actuation assembly.

[0009] In one embodiment, the case comprises or has a recess.

[0010] In an embodiment, the actuation button is adapted to slide in the recess.

[0011] In a first aspect, the invention resides a door handle assembly for sliding actuation comprising:a case having a recess;an actuation button adapted to slide in the recess;an actuation assembly adapted to engage the actuation button, and configured to convert linear motion to motion that is substantially orthogonal thereto; anda latch assembly adapted to engage the actuation assembly.

[0012] In one embodiment, the linear motion is vertical linear motion. In one embodiment, the vertical linear motion is converted orthogonally. In one embodiment, the vertical linear motion is converted to horizontal motion.

[0013] In an embodiment, the actuation assembly comprises a combination gear and a latch gear. In certain embodiments, the combination gear is adapted to mesh or is configured to interact with the latch gear.

[0014] In one embodiment, the combination gear comprises a pivot point. In an embodiment, the combination gear comprises a first set of teeth and a second set of teeth. In certain embodiments, the first set of teeth is angularly offset from the second set of teeth. In a preferred embodiment, the first set of teeth is located as a greater distance to the pivot point than the distance between the second set of teeth and the pivot point. In one embodiment, the first set of teeth is adapted to engage a linear gear. In an embodiment, the second set of teeth is adapted to engage the latch gear. In oneembodiment, the combination gear and the linear gear together convert linear motion to rotational movement.

[0015] In one embodiment, the actuation button comprises a linear gear disposed on an interior wall thereof.

[0016] In embodiments, the latch gear comprises a first gear having a first set of latching teeth. In an embodiment, the latch gear further comprises a latch lever. In a preferred embodiment, the first gear is connected to the latch lever by an axle. In one embodiment, the first gear is adapted to mesh or configured to interact with the second set of teeth of the combination gear. In one embodiment, the latch gear further comprises an elongate member adapted to be received in or with the latching lever.

[0017] In one embodiment, the latching assembly comprises a latch intermediate portion connecting a latch tail to a latch head. In one embodiment, the latch intermediate portion is pivotably and / or rotationally connected to the latch tail and / or latch head.

[0018] In embodiments, the door handle assembly further comprises a latch center plate. In one embodiment, the latch center plate comprises a body having one or more apertures therethrough. In certain embodiments, the one or more apertures include a latch gear aperture adapted to receive the axle of the latch gear and securing apertures adapted to secure to the case.

[0019] In embodiments, the actuation button comprises a body. In an embodiment, the body comprises a surface adapted to be pushed or engaged by a user. In an embodiment, the body comprises one or more extensions adapted to engage a respective biasing device. In one embodiment, the biasing device comprises or is a resilient member and / or a spring. In one embodiment, the button further comprises guiding protrusions adapted to be received in channels of a center plate.

[0020] In an embodiment, the case further comprises the center plate.

[0021] In one embodiment, the door handle assembly comprises a pair of actuation buttons. In this embodiment, the actuation assembly further comprises an idler gear. In some embodiments, the idler gear is configured to interact, mesh or couple with the latch gear and the combination gear. In embodiments, the idler gear comprises a first idler gear having a first set of idler teeth and a second idler gear having a second set of idler teeth. In one embodiment, the first idler gear and second idler gear are connected by an axle. In one embodiment, the first idler gear is configured to mesh with the combination gear. In one embodiment, the second idler gear is configured to mesh with the first gear of the latch gear.

[0022] In some embodiments, the actuation assembly further comprises an idler gear.

[0023] In a second aspect, the invention resides in a method of actuating a door handle assembly including the steps of:applying a sliding pressure on an actuation button;converting linear movement to rotational movement through a linear gear in conjunction with a combination gear; andconverting the rotational movement to movement that is substantially orthogonal to the linear movement through the combination gear with a latch gear;to thereby actuate a door handle assembly.

[0024] In one embodiment, the method further includes the step of providing a door handle assembly comprising a case having a recess, the actuation button adapted to slide in the recess, and an actuation assembly adapted to engage the actuation button, and configured to convert linear motion to horizontal motion; and a latch assembly adapted to engage the actuation assembly.

[0025] In one embodiment, the linear motion is vertical linear motion. In one embodiment, the motion that is substantially orthogonal to the linear motion is horizontal motion.

[0026] The door handle assembly and components thereof may be as substantially described herein for the first aspect.

[0027] The various features and embodiments of the present invention referred to in the individual sections above and in the description which follows apply, as appropriate, to other sections, mutatis mutandis. Consequently, features specified in one section may be combined with features specified in other sections as appropriate.

[0028] Further features and advantages of the present invention will become apparent from the following detailed description.BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To assist in understanding the invention and to enable a person skilled in the art to put the invention into practical effect, embodiments of the invention will be described by way of example only with reference to the accompanying drawings, in which:Figure 1 shows a front view of a door handle assembly;Figure 2 shows a rear view of a door handle assembly;Figure 3 shows a perspective of a door handle assembly;Figure 4 shows a door handle assembly with parts of the case removed; Figure 5 shows a partial embodiment of the actuation assembly in the closed position;Figure 6 shows a partial embodiment of the actuation assembly in the open position;Figure 7 shows another view of the partial embodiment of the actuation assembly in the closed position;Figure 8 shows another view of the partial embodiment of the actuation assembly in the open position;Figure 9 shows an embodiment of the combination gear;Figure 10 shows an embodiment of the latch gear;Figure 11 shows an embodiment of the idler gear;Figure 12 shows an embodiment of the latching assembly;Figure 13 shows an embodiment of the actuation button;Figure 13a shows a different view of the actuation button of Figure 13; Figure 14 shows an embodiment of the latch center plate;Figure 15 shows an embodiment of the center plate;Figure 16 shows an embodiment of the latch gear housing;Figure 17 shows another embodiment of the actuation button, button guide, the actuation assembly and the latching assembly;Figure 18 shows an embodiment of the actuation assembly;Figure 19 shows an embodiment of the actuation button;Figure 20 shows an embodiment of the actuation button and the button guide;Figures 21 and 22 show views of a door handle assembly with parts of the case removed;Figure 23 shows an embodiment of the latching assembly;Figure 24 shows an embodiment of the latch gear;Figure 25 shows an embodiment of the idler gear;Figure 26 shows an embodiment of the combination gear;Figure 27 shows an embodiment of a first body portion of the actuation button;Figure 28 shows a exploded view of the actuation button, latch gear, combination gear and idler gear;Figure 29 shows an exploded view of features of the door handle assembly; Figure 30 shows an exploded view of the actuation button with button guide, privacy mechanism; andFigure 31 shows an embodiment of the privacy assembly.DETAILED DESCRIPTION OF THE INVENTION

[0030] Embodiments of the present invention reside primarily in a door handle assembly. Accordingly, the assembly, device, apparatus or method steps have been illustrated in the drawings, showing only those specific details that are necessary for understanding the embodiments of the present invention, but so as not to obscure the disclosure with excessive detail that will be readily apparent to those of ordinary skill in the art having the benefit of the present description.

[0031] In this specification, adjectives such as first and second, upper and lower, and the like may be used solely to distinguish one element or action from another element or action without necessarily requiring or implying any actual such relationship or order.

[0032] Words such as “comprises” or “includes” are intended to define a nonexclusive inclusion, such that an assembly, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed, including elements that are inherent to such an assembly, method, article, or apparatus.

[0033] As used herein, the term ‘about’ means the amount is nominally the number following the term ‘about’ but the actual amount may vary from this precise number to an unimportant degree.

[0034] As used herein, the term ‘vertical’ may refer to the orientation relative to the present door handle assembly as a whole. However, it will be appreciated that the present door handle assembly can be utilized in other orientations.

[0035] As used herein, the term ‘integrally formed’ refers to a component or device that is formed of a single unitary material.

[0036] As used herein, the term ‘case’ may be used interchangeably with the term ‘housing’. That is, the case or housing forms an enclosure for the internal components of the door handle assembly.

[0037] The present invention is predicated on the finding that a door handle assembly can be utilized with a slidable actuation system. In this regard, the present door handle assembly alleviates one or more of the issues mentioned hereinabove. Particularly, the present door handle assembly allows for slidable actuation which may alleviate the issue with door handles being difficult to grasp and actuate.

[0038] Figures 1 to 3 show different views of an embodiment of the present door handle assembly. The door handle assembly (100) is adapted for slidable actuation. In an embodiment, the slidable actuation is vertical actuation. The door handle assembly (100) comprises a case (101) having a recess (102). The door handle assembly (100) further comprises an actuation button (103) adapted to slide vertically in the recess (102). It will be appreciated that the door handle assembly need not necessarily require the recess. Furthermore, the door handle assembly (100) comprises an actuation assembly (110) that is adapted to engage the actuation button (103) (mentioned in more detail hereinafter). The door handle assembly (100) further comprises a door latch (not shown) and a latch assembly (not shown) connected thereto. Actuation or sliding of the actuation button (103) in the vertical direction leads to retraction of the latch and the latching mechanism.

[0039] Shown in Figure 4 is an embodiment of the present door handle assembly with the parts of the case removed. It should be noted that some of the components thereof have been omitted for descriptive purposes. The door handle assembly (100) comprises an actuation assembly (110). The actuation assembly (110) comprises a combination gear (120) and a latch gear (130). The combination gear (120) suitably meshes or is configured to interact with the latch gear (130). The actuation assembly (110) may further comprise an idler gear (140, mentioned in more detail hereinafter).

[0040] An embodiment of the combination gear (120) is shown in Figure 9. The combination gear (120) comprises a pivot point (121) in which the combination gear (120) may pivot about. In this regard, the pivot point (121) suitably is adapted to houseor receive an e-clip. That is, the combination gear is configured to pivot and / or rotate about an axle or spline received in the pivot point (121). The combination gear (120) comprises a first set of teeth (122) and a second set of teeth (123). The first set of teeth (122) is angularly offset from the second set of teeth (123). In one embodiment, the first set of teeth (122) comprises one or more teeth. In the embodiment shown, the first set of teeth (122) comprises three teeth. The second set of teeth (123) comprises one or more teeth. In the embodiment shown, the second set of teeth (123) comprises three teeth. In one embodiment, the combination gear (120) is integrally formed.

[0041] As shown the first set of teeth (122) is located at a greater distance to the pivot point (123) than the distance between the second set of teeth (123) and the pivot point (123). The first set of teeth (122) is adapted to engage a linear gear (174, shown in Figure 13a) on an interior wall of the actuation button (103). The teeth of the lineargear are orientated internally facing from the interior wall. The second set of teeth (123) is adapted to engage the latch gear (130). The combination gear and linear gear provides balanced transfer of motion from linear movement to rotational movement. That is, linear movement of the button is converted to rotational (partial rotation) movement in the combination gear.

[0042] An embodiment of the latch gear (130) is shown in Figure 10. The latch gear (130) comprises a first gear (131) having a first set of latching teeth (132). The latch gear (130) further comprises a latch lever (135) (mentioned in more detail hereinafter). The latch gear (130) is suitably connected to the latch lever (135) by an axle (139). In one embodiment, the first gear (131) is fixedly connected to the latch lever (135) by the axle (139). In another embodiment, the axle (139) comprises one or more extension(s) therefrom which are received in a complementary aperture in the first gear (131) and a complementary aperture in the latching lever (135) such that rotational movement from either component is transferred to the other. In one embodiment, the first gear (131) is adapted to mesh or is configured to interact with the second set of teeth (123) of the combination gear (120).

[0043] The first set of latching teeth (132) suitably comprises one or more teeth. In the embodiment shown, the first set of latching teeth (132) comprises three teeth. The first set of latching teeth (132) are adapted to engage or mesh with the second set of teeth (123) of the combination gear (120). As the first set of latching teeth (132) mesh with second set of teeth (123) this causes the latching latch lever (135) to rotate. The latching lever (135) is adapted to engage a latch tail.

[0044] The latch gear (130) may further comprise an elongate member (138) adapted to be received in or with the latching lever (135). In one embodiment, the latching lever (135) comprises an indent or recess that is adapted to receive the elongate member (138). In an embodiment, the latching lever (135) is provided with a C-channel. One or both of the ends of the elongate member (138) may be provided with a circumferential indent adapted to engage the latching lever (135). This more securely retains the elongate member (138) with the latching lever (135). In one embodiment, the elongate member (138) is held in place by the C-channel. The C-channel is configured such that rotation of the latch gear (130) results in horizontal movement of the elongate member (138) in the latching lever (135). In one embodiment, the elongate member (138) moves in the C-channel from one end to the other as rotation is affected. The elongate member (138) is adapted to engage the latch tail (mentioned in more detail hereafter). The latch gear and the combination gear provides balanced transfer of motion from rotational movement to horizontal movement. The latching lever (135) may be provided with a first connecting portion adapted to secure another first connecting portion of an opposing latching lever (135) mentioned in more detail hereinafter. For instance, the first connecting portion may be a male connecting portion or a female connecting portion. In one embodiment, a pin may be inserted therein to securely connect them together.

[0045] Although mentioned as vertical and horizontal motion, it will be appreciated that the present invention can be utilized with a vertical movement input or a horizontal movement input, and that the output will be horizontal movement output or a vertical movement output, respectively. The person skilled in the art will appreciate that a modification in orientation of the assembly can be utilized to achieve this versatility.

[0046] Shown in Figure 16 is an embodiment of a latch gear housing (190). The latch gear housing (190) is adapted to connect the latch gear (130) to the latch center plate (160, mentioned in more detail hereinafter). In this regard, the latch gear housing (190) comprises the axle (139). The latch gear housing (190) maintains the position of the axle (139) and ensures that rotation thereof is in the desired position. The latch gear housing (190) further comprises an extension or elongate member (191) adapted to be received in an aperture (163) of the latch center plate (160) to ensure the location thereof relative to the other components of the door handle assembly (100). In one embodiment, the latch gear housing (190) is integrally formed. The latch gear housing (190) further comprises a stop (192). The stop (192) prevents the latch gear (135) from rotating beyond a certain point.

[0047] The door handle assembly (100) further comprises a latching assembly (150). The latching assembly (150) comprises a latch intermediate portion (152) connecting a latch tail (151) to a latch head (153). In another embodiment, the latch tail (151), the latch intermediate portion (152), the latch head (153) and hook (154, mentioned hereinafter) are in a fixed rigid configuration. In this regard, the latch intermediate portion (152) and the hook (154) are configured to be offset. In one embodiment, the latch tail (151), the latch intermediate portion (152), the latch head (153) and hook (154) are configured to form a ‘bend’. In one embodiment, the latch intermediate portion (152) is pivotable and / or rotationally connected to the latch head (153). As shown, the latch tail (151) comprises a portion adapted to engage the latching lever (135). In this regard, movement of the latching lever (135) affects movement of the latch tail (151) and thus latch head (153) to move from an extended to a retracted position.

[0048] The latching tail (151) comprises a hook (154) adapted to engage the elongate member (138). As the first gear is rotated (131), this causes the latching lever (135) to also rotate by virtue of the axle (139). This movement results in driving the elongate member (138) which in turn pulls the latching assembly (150) using the hook (154). This causes the remaining portion of the latch assembly to move and this leads the latch head (153) to move from an extended position to a retract position.

[0049] In one embodiment, the door handle assembly further comprises a latch head channel (not shown). The latch head channel is suitably an elongate member having a bore therein. The latch head channel is suitably connected or affixed to the door itself. The latch channel is adapted to guide the latch head in the extended position to the retracted position (or vice versa) such that the latch head enters a recess in a door jamb or similar. Alternatively, or similarly, a side of the case may comprise an aperture adapted to guide the latch head. The intermediate portion (152) and components thereof form a bend such that the hook (154) can be offset. This allows for clearance to ensure the actuation assembly functions whilst alleviating the problem of jamming.

[0050] The door handle assembly (100) further comprises a latch center plate. Shown in Figure 14 is an embodiment of a latch center plate (160). The latch center plate (160) comprises a body (160) having one or more apertures therethrough. The one or more apertures include a latch gear aperture (162) adapted to receive the axle (139) of the latch gear (130), or securing apertures adapted to secure the complementary protrusions of the housing. The securing apertures ensure that the latch center plate is securely connected to the case. The latch center plate (160) also allowsfor ease of installment. In this regard, the latch center plate (160) allows for the latch gear (130) to be attached on both sides prior to the case being connected. This means that only one set of teeth needs to be meshed when the second half of the case closes onto the door. The latch center plate (160) also provides support for the latch tail (151) to slide along.

[0051] Shown in Figure 13 and Figure 13a are an embodiment of an actuation button (103). The button (103) comprises a body (170). The body (170) comprises a top surface (171) adapted to be pushed or engaged by a user. The body (170) further comprises one or more portions adapted to engage a biasing device. The biasing device are resilient members that aid the actuation assembly in returning to the start position or closed or lock position. In the embodiment shown, the body (170) comprises extensions (172) adapted to engage a biasing device. In one embodiment, the body (170) comprises a plurality of extensions, each adapted to engage a respective biasing device. Non-limiting examples of the biasing device include a resilient member or spring. The biasing device is adapted to push against or engage the case or the latch center plate, such that resistance is provided when pressing the actuation button (103).

[0052] The actuation button (103) further comprises a linear gear (174) connected and / or affixed to the interior wall of the button (103). As mentioned above, the linear gear (174) is adapted to engage with the first set of teeth (122) of the combination gear (120) and provides balance transfer motion form a linear motion to rotational movement. In an embodiment, the linear motion is vertical linear motion.

[0053] It will be appreciated that pressing the actuation button (103) will pull the latching assembly into the retract position such that the latch head is retracted from a recess in a door jamb or similar. Upon releasing or ceasing a pushing force on the actuation button (103), the biasing device(s) will push the actuation button upwardly and this will push the latching assembly into the extended position such that the latch head extends into the doorjamb or similar.

[0054] The actuation button (103) may further comprise guiding protrusions (173) extending from a side thereof. The guiding protrusions (173) are adapted to be received in channels (181) of a center plate (180). In the embodiment shown, the actuation button (103) comprises a plurality of guiding protrusions. In the embodiment shown, the actuation button (103) comprises a pair of guiding protrusion (173).

[0055] The door handle assembly (100) may further comprise a center plate (180). The case (101) may suitably further comprise a center plate (180). Shown in Figure 15 is an embodiment of the center plate (180). In one embodiment, the center plate (180)comprises one or more channels therein. In the embodiment shown, the center plate (180) comprises a pair of channels (181) adapted to receive a respective guiding protrusion (173). The center plate (180) serves a number of purposes. In this regard, the center plate (180) by virtue of the channels (181) ensures the movement of the button is in the desired direction. The center plate (180) also provides support and strength to the overall assembly. Furthermore, the center plate (180) also provides a barrier between the two sides of the door handle. The center plate (180) is stationary or not movable relative to the case. The center plate also provides a stopping point for the actuation by creating a bump stop for the button and a fixed return point.

[0056] In one embodiment, the door handle assembly comprises an actuation button (103) on either side of the center plate (180) such that the door handle assembly can be actuated on either side thereof. In this regard, it will be appreciated that the handle assembly may comprise a mirror image of the assembly discussed hereinabove. However, in a preferred embodiment, to increase the compactness of the assembly itself the actuation assembly may further comprise an additional idler gear that interacts, meshes and / or couples with the latch gear (130) and the combination gear (120). The idler gear (140) allows for the orientation of the combination gear (120) to be in the same orientation whilst also allowing actuation of the actuation assembly without being in different orientations. That is, the idler gear is required to shift the rotational direction. This allows for a more compact configuration.

[0057] Figure 11 shows an embodiment of an idler gear. The idler gear (140) comprises a first idler gear (141) having a first set of idler teeth (142) and a second idler gear (143) having a second set of idler teeth (144). The first idler gear (141) and second idler gear (143) are connected by an axle (145). In one embodiment, the first idler gear (141) is fixedly connected to the second idler gear (143) by the axle (145). In another embodiment, the axle (145) comprises one or more extension therefrom which are received in a complementary aperture in the first idler gear (141) and a complementary aperture in the second idler gear (143) such that rotational movement from either component is transferred to the other. As the first idler gear (141) is rotated this causes the second idler gear (143) to also rotate. As the first idler gear is connected to or meshes with the combination gear (120), actuation thereof will lead to rotation of the first idler gear (141) and this will lead to rotation of the second idler gear (143) which is lead to rotation of the latch gear (130). In a preferred embodiment, the first idler gear is the same as the second idler gear. In a particularly preferred embodiment, the first idler gear is superimposed on the second idler gear.

[0058] In this embodiment, the elongate member (138) is connected to each of the two latching levers (135) such that actuation of any one of the actuation buttons will lead to the rotation of the latching lever (135). This allows for the door handle assembly to be actuated by either side thereof.

[0059] Shown in Figures 17-22 are different views and components of the present door handle assembly. The door handle assembly (200) is adapted for slidable actuation. In an embodiment, the slidable actuation is vertical actuation. The door handle assembly (200) suitably comprises a case (201). The case (201) may suitably have a recess (202). The door handle assembly (200) further comprises an actuation button (203) adapted to slide relative to the case (201). Suitably, the actuation button (203) is adapted to slide in the recess (202). It will be appreciated that the door handle assembly need not require the recess. The door handle assembly (200) further comprises an actuation assembly (210) that is adapted to engage the actuation button (203). The door handle assembly (200) further comprises a latch assembly connected thereto. Actuation or sliding of the actuation button (203) in the vertical direction leads to retraction of the latching mechanism.

[0060] It should be noted that some of the components of the present door handle assembly have been omitted for descriptive purposes. The door handle assembly (200) comprises an actuation assembly (210). The actuation assembly (210) comprises a combination gear (220) and a latch gear (230). The combination gear (220) suitably meshes or is configured to interact with the latch gear (230). The actuation assembly (210) may further comprise an idler gear (mentioned in more detail hereinafter).

[0061] An embodiment of the combination gear (220) is shown in Figure 26. The combination gear (220) provides a pivot point (221) in which the combination gear (220) may pivot about. That is, the combination gear is configured to pivot and / or rotate about an axle or spline received in the pivot point (221). The combination gear (220) comprises a first set of teeth (222) and a second set of teeth (223). The first set of teeth (222) is angularly offset from the second set of teeth (223). In one embodiment, the first set of teeth (222) comprises one or more teeth. In the embodiment shown, the first set of teeth (222) comprises three teeth. The second set of teeth (223) comprises one or more teeth. In the embodiment shown, the second set of teeth (223) comprises three teeth. In one embodiment, the combination gear (220) is integrally formed.

[0062] As shown, the first set of teeth (222) is located at a greater distance to the pivot point (221) than the distance between the second set of teeth (223) and the pivot point (221). The first set of teeth (222) is adapted to engage a linear gear (274, shown inFigure 19) of the actuation button (203). The teeth of the lineargear (274) are orientated internally facing. The second set of teeth (223) is adapted to engage the latch gear (230). The combination gear and linear gear provides balanced transfer of motion from linear movement to rotational movement. That is, linear movement of the button is converted to rotational (partial rotation) movement in the combination gear.

[0063] In one embodiment, the combination gear (220) comprises an offset portion (225). In this embodiment, the portion comprising the pivot point (221) and the first set of teeth (222) are in substantially the same plane, and the offset portion (225) and the second set of teeth (223) are offset relative to the first set of teeth (222) and a portion comprising the pivot point (221). The offset relationship allows for a more compact actuation assembly (210).

[0064] In an embodiment, the combination gear (220) may further comprise a guide (224) that extends away from the first set of teeth (222). In the embodiment shown, in a preferred embodiment, the guide (224) comprises a protrusion that extends substantially perpendicular to the plane of the first set of the teeth (222). The guide (224) is suitably an extension guide that limits the combination gear (220) from moving off plane (such as towards the front of the case). The inventor envisages that the actuation button provides a limiter for movement towards the center of the case. The inventor envisages that this may improve the efficiency of the actuation mechanism.

[0065] An embodiment of the latch gear (230) is shown in Figure 24. The latch gear (230) comprises a first gear (231) having a first set of latching teeth (232). The latch gear (230) further comprises a latch lever (235) (mentioned in more detail hereinafter). The latch gear (230) is suitably connected to the latch lever (235) by an axle (239). Alternatively, the latch gear (230) is suitably integrally formed. Alternatively, in one embodiment, the latch lever (235) and first (231) are fused and together adapted to receive the axle (239). In one embodiment, the first gear (231) is fixedly connected to the latch lever (235) by the axle (239). In another embodiment, the axle (239) comprises one or more extension(s) therefrom which are received in a complementary aperture in the first gear (231) and a complementary aperture in the latching lever (235) such that rotational movement from either component is transferred to the other. In one embodiment, the first gear (231) is adapted to mesh or is configured to interact with the second set of teeth (223) of the combination gear (220).

[0066] The first set of latching teeth (232) suitably comprises one or more teeth. In the embodiment shown, the first set of latching teeth (232) comprises three teeth. The first set of latching teeth (232) are adapted to engage or mesh with the second set ofteeth (223) of the combination gear (220). As the first set of latching teeth (232) mesh with second set of teeth (223) this causes the latching latch lever (235) to rotate. The latching lever (235) is adapted to engage a latch tail.

[0067] The latch gear (230) may further comprise or is adapted to receive an elongate member (238) adapted to be received in or with the latching lever (235). In one embodiment, the elongate member (238) suitably forms part of the latch assembly. In one embodiment, the elongate member (238) is a discrete feature. In one embodiment, the latching lever (235) comprises an indent or recess that is adapted to receive the elongate member (238). In an embodiment, the latching lever (235) is provided with a C-channel. In one embodiment, the elongate member (238) is held in place by the C-channel. The C-channel is configured such that rotation of the latch gear (230) results in horizontal movement of the elongate member (238) in the latching lever (235). In one embodiment, the elongate member (238) moves in the C-channel from one end to the other as rotation is affected. The latch gear and the combination gear provide balanced transfer of motion from linear movement to rotational movement to horizontal movement.

[0068] In an embodiment, the latching lever (235) may be positioned between a pair of first gears (231). In this embodiment, each of the pair of first gears (231) are configured to engage a combination gear (220) or an idler gear (mentioned in more detail hereinafter). This allows for the latch gear (230) to engage or mesh with combination gears (220) or idler gear (mentioned in more detail hereinafter) associated with each side of the door handle assembly (200). As such, actuation of the actuation button (203) on either side of the door handle assembly (200) will result in rotation of the latch gear which in turn results in horizontal movement of the latching assembly.

[0069] Although mentioned as vertical and horizontal motion, it will be appreciated that the present invention can be utilized with a vertical movement input or a horizontal movement input, and that the output will be horizontal movement output or a vertical movement output, respectively. The person skilled in the art will appreciate that a modification in orientation of the assembly can be utilized to achieve this versatility.

[0070] In one embodiment, the case (201) comprises the axle (239). The case (201) maintains the position of the axle (239), and that thus the position of the first gear (231) and the latch lever (235). In one embodiment, the axle (239) is in the form of, or is, or comprises elongate member (291). The case (201) suitably further comprises an extension or elongate member (293) adapted to be received in pivot point (221) of the combination gear (220). In an embodiment, the extension or elongate member (293) issuitably the axle or spline mentioned hereinabove. These features alleviate the issue of misalignment of the latch gear (230) and the combination gear (220). It will be appreciated that these features allow for alignment of the components of the door handle assembly (200). In an embodiment, the case (201) further comprises a stop . The stop prevents the latch gear (235) from rotating beyond a certain point. The stop need not be necessary for the invention as the biasing device utilized with the idler gear (mentioned hereinafter) provides an end range of motion.

[0071] The case (201) may further comprise the axle (245). The case (201) maintains the position of the axle (245), and thus the position of the idler gear (240), if applicable. In one embodiment, the axle (245) is in the form of, or is, or comprises an elongate member (292). This feature alleviates the issue of the misalignment of the latch gear (230) and the combination gear (220) with the idler gear (240), where appropriate.

[0072] The door handle assembly (200) further comprises a latching assembly (250). The latching assembly (250) comprises a latch tail (251) and a latch head (253). The latch tail (251) suitably comprises an aperture. In one embodiment, the aperture is suitably a polygonal or arcuate aperture (251a). In one embodiment, the latching assembly (250) comprises a latch cap (252) that connects to a latch head channel (260). The latch cap (252) is suitably received in the latch head channel (260). The latching assembly (250) is suitably biased. In one embodiment, the latching assembly further comprises a biasing device. The biasing device (not shown) is connected or abuts the latch cap (252) and the latch head (253).

[0073] In assembly, the latch cap (252) is connected to the latch tail (251) through an aperture (252b); then a biasing device (such as a spring or similar device) is connected, placed and / or abut the latch cap (252); before latch head (253) is connected or affixed to the latch tail (251). This allows for a biasing forcing to be provided to the latch assembly. The latch cap (252) may also be provided with one or more locking tab (252a). In one embodiment, the locking tab (252a) is in the form of a protrusion of locking pin.

[0074] An embodiment of the latch head channel (260) receiving the latching assembly (250) is shown in Figure 32 (with the latch cap (252) being omitted for descriptive purposes). The latch head channel (260) comprises a channel therethrough adapted to receive the latching assembly (250). The latch head channel (260) suitably comprises a planar portion (261) and a raised portion (262). The planar portion (261) and raised portion (262) suitable define a bore therethrough for receiving the latchingassembly (250). In one embodiment, the raised portion (262) is in the form of a cylinder. The planar portion (261) further comprises one or more affixing portions (263). The affixing portions (263) are adapted to receive a fastening member or fastening assembly to securely attach to the door the present invention is being assembled on. The raised portion (262) comprises one or more locking slot(s) (262a). The locking slot (262a) is adapted to receive a respective locking tab (252a) of the latch cap (252). In an embodiment, the locking slot (262) comprises an ‘L’-shaped aperture or channel. The latch head channel is adapted to guide the latch head (253) in the extended position to the retracted position (or vice versa) such that the latch head enters a recess in a door jamb or similar.

[0075] As shown, the latch tail (251) comprises a portion adapted to engage the elongate member (238) which in turn engage the latching lever (235). In this regard, movement of the latching lever (235) affects movement of the latch tail (251) and thus latch head (253) to move from an extended to a retracted position.

[0076] The latching tail (251) may comprise the elongate member (238). The distal end of the latching tail (251) is adapted to engage the elongate member (238). In this regard, the aperture is adapted to engage the elongate member (238). As the first gear is rotated (231), this causes the latching lever (235) to also rotate by virtue of the axle (239). This movement results in driving the elongate member (238) which in turn pulls the latching assembly (250). This causes the remaining portion of the latch assembly to move and this leads the latch head (253) to move from an extended position to a retracted position.

[0077] In one embodiment, the door handle assembly further comprises a latch head channel (260). The latch head channel is suitably an elongate member having a bore therein. The latch head channel is suitably connected or affixed to the door itself. The latch head channel is adapted to guide the latch head in the extended position to the retracted position (or vice versa) such that the latch head enters a recess in a door jamb or similar.

[0078] Shown in Figures 19 and 20 is an embodiment of a button (203). The button (203) suitably comprises a first body portion (203a) and a second body portion (203b) which together form the button (203). The first body portion (203a) comprises a top surface (271a) and the second body portion (203b) comprises a top surface (271b). The top surface (271a) and / or top surface (271b) may be a planar surface or a contoured surface. The top surface (271a) and / or the top surface (271b) are adapted to be pushed by the user. Each body portion suitably further comprises one or more portions adaptedto engage a biasing device. The biasing device is a resilient member that aids the actuation assembly in returning to the start position or closed or lock position. In the embodiment shown, the first body portion (203a) comprises extensions (272a) adapted to engage a biasing device. In one embodiment, the first body portion (203a) comprises a plurality of extensions (272a), each adapted to engage a respective biasing device. The second body portion (203b) comprises extensions (272b) adapted to engage a biasing device. In one embodiment, the second body portion (203b) comprises a plurality of extensions (272b), each adapted to engage a respective biasing device. Non-limiting examples of the biasing device include a resilient member or spring. The biasing device is adapted to push against or engage the case (201), such that resistance is provided when pressing the actuation button (203). The biasing device is adapted to push against or engage the case (201) through the button guides (275a and 275b) and channels (204a, 204b). It will be appreciated that the first body portion (203a) and the second portion (203b) are generally the same.

[0079] Each body portion (203a, 203b) further comprises a linear gear (274a, 274b) connected and / or affixed to the interior wall of the respective body portion (203a, 203b). As mentioned above, the linear gear (274a, 274b) is adapted to engage with the first set of teeth (222) of the combination gear (220) and provides balance transfer motion form a linear motion to rotational movement. In an embodiment, the linear motion is vertical linear motion.

[0080] It will be appreciated that pressing the actuation button (203) will pull the latching assembly into the retract position such that the latch head is retracted from a recess in a door jamb or similar. Upon releasing or ceasing a pushing force on the actuation button (203), the biasing device(s) will push the actuation button upwardly and this will push the latching assembly into the extended position such that the latch head extends into the doorjamb or similar.

[0081] Each body portion (203a, 203b) may further comprise a guiding portion (275a, 275b) extending from a side thereof. Each guiding portion comprises a protrusion (276a, 276b) extending outwardly therefrom. Each protrusion (276a, 276b) is adapted to be received in a respective channel (204a, 204b) of the case (201). In the embodiment shown, the actuation button (203) comprises a plurality of guiding portions (275a, 275b). In the embodiment shown, the actuation button (203) comprises a pair of guiding portions (275a, 275b). The guiding portion is suitably protruded that is adapted to be received in a respective channel to maintain alignment of the button and the case. This allows the guiding portions (275a, 275b) to be securely located relative to the case. Each guiding portion (275a, 275b) comprises a channel therein. The channel is adaptedto receive rib of the body portion (203a, 203b). In the embodiment shown, the channel is suitably an arcuate channel (278a, 278b) adapted to receive an arcuate rib (278a’, 278b’). In one embodiment, the arcuate channel is semi-circular channel. It will be appreciated that one of ordinary skill in the art will appreciate that any shaped channel can be used with a complementary rib. It is envisaged that the channel and rib complementary nature ensure the slidably direction of the actuation button (203) relative to the case (201). Each guiding portion (275a, 275b) suitably further comprises a stop (277a, 277b). In the embodiment shown, the stop (277a, 277b) comprises or is an extension extending from the respective guiding portion. In one embodiment, the stop is a bump stop. The stop (277a, 277b) is adapted to limit the upward movement of the actuation button (203). In this regard, the stop (277a, 277b) is adapted to abut an extension (206a, 206b) of a respective body portion (203a, 203b). The extension (206a, 206b) abuts the stop (277a, 277b) to limit the upward movement of the actuation button provided by the biasing device(s) connected to the actuation button (203).

[0082] In the embodiment shown, the case (201) comprises channels (204a, 204b) adapted to receive a respective guiding portion (275a, 275b). It will be appreciated that the channels may be an aperture or channel formed in the case (201). It will also be appreciated that the case (201) may be formed of a first case portion (201a) and a second case portion (201b). In one embodiment, the first case portion (201a) is adapted to securely or releasably attach to the second case portion (201b). The channels (204a, 204b) suitably comprise a stop (201a’, 201b’) for engaging the respective guiding portion (275a, 275b). The channel suitably defines a movable range for the actuation button. It will be appreciated that either the first case portion (201a) or the second case portion (201b) comprise the axle (239) / elongate member (291) and optionally the axle (245) / elongate member (292). In this regard, it will be appreciated that the other of the first case portion (201a) or the second case portion (201b) may suitably comprise an aperture or blind hole (e.g., 295) adapted to receive the axle (239) / elongate member (291) for additional support and structure thereto. It will also be appreciated that the axle (239) / elongate member (291) and the axle (245) / elongate member (292) may be secured to the first case portion (201a) and / or the second case portion (201b). In this embodiment, the axle (239) / elongate member (291) and the axle (245) / elongate member (292) may be provided with a first connecting portion that is complementary to a second connecting portion of the case portion. In one embodiment, the first connecting portion is a male connecting portion and the second connecting portion is a female connecting portion, or vice versa. In one embodiment, the male connecting portion is an external male thread and the female connection portion is an internalfemale thread. In one embodiment, either the first case portion or the second case portion may suitably comprise the female connection portion. It is envisaged that these allow for ease of manufacturing and installation.

[0083] It will be appreciated that the first case portion (201a) and the second case portion (201b) may be attached to form the case (201). In an embodiment, the first case portion (201a) may comprise a male attachment portion and the second case portion (201b) may comprise a complementary attachment portion to securely attach the two case portions together. Alternatively, the first case portion (201a) and the second case portion (201b) may be securely attached using one or more fastening assemblies.

[0084] As mentioned above, the present door handle assembly may comprise a mirror image or a copy of the assembly discussed hereinabove. However, in a preferred embodiment, to increase the compactness of the assembly itself the actuation assembly may further comprise an idler gear that interacts, meshes and / or couples with the latch gear (230) and the combination gear (220). The idler gear (240) allows for the orientation of the combination gear (220) to be in the same orientation whilst also allowing actuation of the actuation assembly without being in different orientations. That is, the idler gear is required to shift the rotational direction. This allows for a more compact configuration. The person skilled in the art will appreciate that the door handle assembly may further comprise a second actuation assembly. The features of the second actuation assembly are as substantially described hereinabove for the actuation assembly. One notable difference between the actuation assembly and the second actuation assembly is the presence of an idler gear. The idler gear meshes with the combination gear and the latch gear.

[0085] Figure 25 shows an embodiment of an idler gear. The idler gear (240) comprises a first set of idler teeth (242). The idler gear (240) comprises an axle (245). The axle (245) defines a pivot point in which the idler gear (240) pivots about. In this regard, the idler gear (245) is adapted or configured to pivot and / or rotate about an axle or spline. The idler gear (240) comprises a set of idler teeth (242). In an embodiment, the set of idler teeth (242) comprise a plurality of teeth. In one embodiment, the set of idler teeth (242) comprises 2, 3 or 4 teeth. The set of idler teeth (242) are configured to mesh with the combination gear (220) and the latch gear (230). Rotation from either the combination gear (220) or the latch gear (230) is transferred to the other. When either the combination gear or latch gear is rotated, this causes the idler gear to rotate and leads to rotation of the other of the combination gear or latch gear. As the idler gear is connected to or meshes with the combination gear (220), actuation thereof will lead to rotation of the idler gear (240) and this will lead to rotation of the latch gear (230).

[0086] In an embodiment, the latch gear (240) further comprises a biasing device attachment portion (246). The biasing device attachment portion (246) is suitably a threaded blind hole adapted to receive a biasing device. The biasing device attachment portion (246) is configured to securely retain a biasing device. A non-limiting example of the biasing device is a spring or similar device. The opposing end of the biasing device may be attached to a biasing device attachment portion such that the idler gear (240) is biased. The biasing device is suitably attached or connected to the biasing device attachment portion (246) and a second biasing device attachment portion of the case.

[0087] As mentioned above, the biasing device attached to a biasing device attachment portion (246) of the idler gear (240) is also suitably attached or connected to the second biasing device attachment portion of the case. In one embodiment, the first case portion (201a) and / or second case portion (201b) comprises a second biasing device attachment portion (205a). The biasing device is thereby anchored to the casing and provides a restoring force to the idler gear (240).

[0088] The door handle assembly (200) may further comprise a center plate (280). The case (201) may suitably further comprise a center plate (280). In one embodiment, the center plate (280) comprises one or more channels therein. In the embodiment shown, the center plate (280) comprises a pair of channels (281) adapted to engage a privacy pin (273, mentioned in more detail hereinafter). In this regard, the channels (281) are adapted to engage the privacy pin (273) of the privacy mechanism (270).. The center plate (280) serves several purposes. The center plate (280) provides support and strength to the overall assembly. Furthermore, the center plate (280) also provides a barrier between the two sides of the door handle assembly. The center plate (280) is stationary or not movable relative to the case.

[0089] The actuation button (203) suitably comprises the first body portion (203a) and a second body portion (203b). Suitably, each body portion is located on either side of the center plate (280) such that the door handle assembly can be actuated on either side thereof. In this regard, it will be appreciated that the handle assembly may comprise a mirror image or copy of the assembly discussed hereinabove. In the present embodiment, the handle assembly suitably comprises flipped embodiment of the assembly discussed herein.

[0090] It will be appreciated that the first body portion (203a) and the second body portion (203b) may be attached to form the actuation button (203). In an embodiment, the first body portion (203a) may comprise a male attachment portion and the second body portion (203b) may comprise a complementary attachment portion to securelyattach the two body portions together. Alternatively, the first body portion (203a) and the second body portion (203b) may be securely attached using one or more fastening assemblies. In an embodiment, the first body portion (203a) comprises the male attachment portion. In the embodiment shown, the male attachment portion is or comprises protrusion (283a). In an embodiment, the second body portion (203b) comprises the female attachment portion. In certain embodiments, the female attachment portion comprises an aperture (283b) adapted to receive a respective protrusion (283a). It is envisaged that the channels (281) of the center plate (280) allow for clearance within the housing to conceal the privacy pin (273) from an external viewpoint when the actuation button is in the open configuration with the latch head retracted at its further point.

[0091] In an embodiment, the door handle assembly may further comprise a locking or privacy assembly (270). The locking or privacy assembly (270) comprises a first privacy body (271a) and a second privacy body (271b). Each of the first privacy body (271a) and the second privacy body (271b) comprise one or more attachment portions (272a, 272b). In the embodiment shown, each privacy body comprises a pair of attachment portions. In an embodiment, the attachment portions are spaced apart. The one or more attachment portions (272a, 272b) are adapted to attach to either the first body portion (203a) or the second body portion (203b), respectively. In a preferred embodiment, one of the first privacy body (271a) or the second privacy body (271b) is fixedly connected to the respective body portion (203a or 203b) and the other of the first privacy body (271a) or the second privacy body (271b) is pivotable connected to the respective body portion (203a or 203b). The pivotable connection is provided by an elongate member or axle through one of the apertures (272a or 272b). The fixed connection is provided by an elongate member or fastening memberthrough both of the apertures (272a or 272b). It will be appreciated that each body portion (203a, 203b) comprise aligned apertures for respective apertures (272a, 272b) When in the open configuration, the privacy assembly prevents the actuation of actuation button (203) by rotating and protruding into the path of the respective case portion (201a or 201b). This impedes the button from being actuated. The pivotable connected privacy body portion is connected by only a single attachment portion (either 272a, 272b) which defines the point in which the respective body pivots or rotates about. This allows for a user to push the pivotable connected privacy body to actuate the privacy pin (273). When actuated, the privacy pin is pushed further in. One or both of the first privacy body (271a) and the first privacy body (271b) comprise an aperture (274a, 274b) adapted to receive the privacy pin (273). This allows for the privacy assembly to be suitable for both left andright-handed hinge doors and interchangeable for either side. The privacy pin (273) is adapted or configured to connect the first privacy body (271a) and the second privacy body (271b). This allows for the pin to extrude through the aperture (274b) and creates a safety button that can open the privacy assembly in case of an emergency. It should be appreciated by those skilled in the art that the first privacy body (271a) and the second privacy body (271b) are a copy and can be interchanged by moving the privacy pins to opposing sides and rotating them. In a preferred embodiment, the privacy pin (273) is attached to, or configured to abut on the first privacy body (271a) or the second privacy body (271b). In this embodiment, the distal end of the privacy pin (273) is adapted to engage the aperture of the other privacy body. This privacy body is fixedly connected to the respective body portion (203a or 203b). When in the engaged position or configuration, the actuation button (203) cannot be actuated. In an embodiment, the aperture (274a, 274b) is suitably a bore therethrough. This allows for the privacy pin (273) to be disengaged from the other side as a safety mechanism. It will be appreciate that the pivotable privacy body is preferably the internal side (e.g., room that requires privacy, e.g., bedroom) of the handle assembly and the fixedly attached privacy body is preferably the external side of the handle assembly (e.g., living or communal area). It will also be appreciated that the privacy pin (273) suitably extends through the first body portion (203a) and the second body portion (203b). In one embodiment, the privacy pin is formed of a first pin member (273a) adapted to removable secure to a second pin member (273b). In an embodiment, the first pin member (273a) is a discrete component to the second pin member (273b). In this embodiment, the first pin member (273a) abuts the second pin member (273b).

[0092] The above description of various embodiments of the present invention is provided for purposes of description to one of ordinary skill in the related art. It is not intended to be exhaustive or to limit the invention to a single disclosed embodiment.

[0093] As mentioned above, numerous alternatives and variations to the present invention will be apparent to those skilled in the art of the above teaching. Accordingly, while some alternative embodiments have been discussed specifically, other embodiments will be apparent or relatively easily developed by those of ordinary skill in the art. Accordingly, this invention is intended to embrace all alternatives, modifications and variations of the present invention that have been discussed herein, and other embodiments that fall within the spirit and scope of the invention described above.

Claims

CLAIMS1. A door handle assembly for sliding actuation comprising:a case;an actuation button adapted to slide relative to the case;an actuation assembly adapted to engage the actuation button, and configured to convert linear motion to motion that is substantially orthogonal thereto; anda latch assembly adapted to engage the actuation assembly.

2. The door handle assembly of claim 1, wherein the actuation assembly comprises a combination gear and a latch gear.

3. The door handle assembly of claim 2, wherein the combination gear and the latch gear are adapted to mesh together.

4. The door handle assembly of claim 2 or claim 3, wherein the combination gear comprises a first set of teeth and a second set of teeth.

5. The door handle assembly of claim 4, wherein the first set of teeth is angularly offset from the second set of teeth.

6. The door handle assembly of any one of claims 1 to 5, wherein the actuation button comprises a linear gear adapted to mesh with the combination gear.

7. The door handle assembly of any one of claims 2 to 6, wherein the latch gear comprises latch lever and a set of latching teeth.

8. The door handle assembly of claim 7, wherein the latch lever is adapted to engage the latch assembly.

9. The door handle assembly of any one of the preceding claims, further comprising a second actuation assembly.

10. The door handle assembly of claim 9, wherein the second actuation assembly comprises a combination gear and a latch gear.

11. The door handle assembly of claim 9, wherein the second actuation assembly further comprises an idler gear adapted to engage a combination gear and a latch gear.

12. The door handle assembly of any one of claims 1 to 11, wherein the case comprises a first case portion adapted to affix to a second case portion.

13. The door handle assembly of any one of claims 1 to 12, wherein the actuation button comprises a first body portion adapted to affix to a second body portion.

14. The door handle assembly of any one of claims 1 to 13, wherein, the door handle assembly is configurable between a retract position and an extended position.

15. A method of actuating a door handle assembly including the steps of:applying a sliding pressure on an actuation button;converting linear movement to rotational movement through a lineargear in conjunction with a combination gear; andconverting the rotational movement to movement that is substantially orthogonal to the linear movement through the combination gear with a latch gear;to thereby actuate the door handle assembly.

Images