Transmission assembly, vehicle door handle, vehicle door, and vehicle

Abstract

A transmission assembly, a vehicle door handle, a vehicle door, and a vehicle. The transmission mechanism comprises: a transmission shaft, configured to be mounted on a base; a first lever, mounted on the transmission shaft; a rotating assembly, configured to drive, by means of the first lever during the action of an external force, the transmission shaft to rotate; and a first reset member, configured to drive, when the external force is removed, the transmission shaft to rotate until the first lever abuts against the base.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202322945187.X, filed with the China National Intellectual Property Administration on October 31, 2023 and entitled "TRANSMISSION MECHANISM, VEHICLE DOOR HANDLE, VEHICLE DOOR, AND VEHICLE", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the field of vehicle door handle technologies, and specifically, to a transmission assembly, a vehicle door handle, a vehicle door, and a vehicle.BACKGROUND

[0003] A vehicle door handle is a component mounted on a vehicle door and configured to open the vehicle door, usually including a mounting base, a handle, and a transmission mechanism.

[0004] In related art, when a handle is pulled to unlock a vehicle door, a specific unlocking process is as follows: the handle drives a connecting rod to move, and thus the connecting rod drives a rotating structure to pull a Bowden cable (cable wire) to unlock the vehicle door. The Bowden cable is a flexible power transmission element, generally including a multi-strand steel wire located on an inner side and a plastic sheath wrapped around an outer side of the steel wire. Because the steel wire needs to move relative to the plastic sheath to implement an unlocking function, a movement fit clearance is needed between the steel wire and the plastic sheath. In a humid environment or during vehicle washing, water tends to enter the movement fit clearance. Subsequently, when the vehicle is in a low-temperature environment, accumulated water in the movement fit clearance freezes. Consequently, the steel wire and the plastic sheath freeze together and are unable to move relative to each other, which prevents the vehicle door from being opened using the vehicle door handle.SUMMARY

[0005] An objective of the present disclosure is to provide a transmission assembly, a vehicle door handle, a vehicle door, and a vehicle, so as to at least partially resolve the problem existing in the related technology.

[0006] To achieve the foregoing objective, the present disclosure provides a transmission assembly applied to a vehicle door handle. The transmission assembly includes: a transmission shaft, configured to be rotatably mounted to a base of the vehicle door handle; a first lever, mounted to the transmission shaft; a rotating assembly, configured to drive, by using the first lever when an external force is applied, the transmission shaft to rotate; and a first reset member, configured to drive, when the external force is removed, the transmission shaft to rotate until the first lever abuts against the base.

[0007] Optionally, the first reset member is a first torsion spring. The first torsion spring is sleeved on the transmission shaft. One end of the first torsion spring is configured to be connected to the base, and the other end of the first torsion spring is connected to the transmission shaft.

[0008] Optionally, the rotating assembly includes: a first pin shaft, configured to be mounted to the base; and a rotating block, rotatably mounted to the first pin shaft and configured to rotate around the first pin shaft when the external force is applied. A second lever is formed on the rotating block, and the second lever is configured to come into contact and cooperate with the first lever.

[0009] Optionally, the rotating assembly further includes a second reset member connected to the rotating block, and the second reset member is configured to drive, when the external force is removed, the rotating block to reset.

[0010] Optionally, the second reset member is a second torsion spring. One end of the second torsion spring is connected to the first pin shaft, and the other end of the second torsion spring is connected to the rotating block.

[0011] Optionally, the rotating block includes two first vertical plates spaced apart from each other. Each of the two first vertical plates is sleeved on the first pin shaft. The second torsion spring is sleeved on the first pin shaft and the second torsion spring is located between the two first vertical plates. One end of the second torsion spring is fastened to the first pin shaft, and the other end of the second torsion spring is fastened to any one of the first vertical plates.

[0012] Optionally, the rotating block further includes a horizontal plate connected between the two first vertical plates and a second vertical plate connected to the horizontal plate. The second vertical plate is connected to a side of the horizontal plate facing away from the first vertical plates. The second vertical plate is configured to be connected to a handle of the vehicle door handle.

[0013] Optionally, the horizontal plate, the first vertical plates, and the second vertical plate are integrally formed.

[0014] Optionally, a push rod assembly is further included. The push rod assembly is configured to be connected between the transmission shaft and a lock cylinder of the vehicle door handle. The push rod assembly controls the lock cylinder under driving of rotation of the transmission shaft.

[0015] Optionally, the push rod assembly includes a rocker arm mounted to the transmission shaft, and a link hinged to an end of the rocker arm away from the transmission shaft.

[0016] Optionally, the first lever and the push rod assembly are respectively mounted at positions on the transmission shaft that are close to end portions. The transmission mechanism further includes a first convex ring sleeved on the transmission shaft and a second convex ring sleeved on the transmission shaft. The first convex ring and the second convex ring are located between the first lever and the push rod assembly.

[0017] According to a second aspect of the present disclosure, a vehicle door handle is provided, including a base, a handle, and the foregoing transmission mechanism. The transmission shaft is rotatably mounted to the base, and the handle is drivingly connected to the rotating assembly.

[0018] Optionally, the base has an accommodating cavity, and the accommodating cavity is configured to accommodate the handle. The transmission shaft is located on an outer side of the accommodating cavity. A clearance notch is formed on the base, and the clearance notch is configured to allow the first lever to extend into the accommodating cavity.

[0019] Optionally, a first partition plate and a second partition plate are spaced apart on an outer wall of the accommodating cavity. The vehicle door handle further includes a second pin shaft. The second pin shaft is rotatably arranged between the first partition plate and the second partition plate, and the second pin shaft passes through the first partition plate and the second partition plate. The transmission shaft is configured as a hollow cylinder, and the transmission shaft is sleeved on an outer periphery of the second pin shaft.

[0020] Optionally, each of the first partition plate and the second partition plate are provided with a through hole, and the through hole corresponds to the second pin shaft. The outer wall of the accommodating cavity is further provided with a limiting member, and the limiting member is located between the first partition plate and the second partition plate. The limiting member is configured such that, when the transmission shaft moves in a first radial direction until being limited by the limiting member, an axis of the transmission shaft coincides with an axis of the through hole.

[0021] Optionally, the limiting member includes a third partition plate and a fourth partition plate. A first concave part configured to accommodate the transmission shaft is formed on the third partition plate, and a second concave part configured to accommodate the transmission shaft is formed on the fourth partition plate. The first concave part and the second concave part are configured to limit the transmission shaft at two ends in a second radial direction. The first radial direction is perpendicular to the second radial direction.

[0022] Optionally, the vehicle door handle has: a first state, in which the handle is hidden in the accommodating cavity; a second state, in which the handle translates to extend out of the accommodating cavity; and a third state, in which one end of the handle can rotate around the other end of the handle to unlock a vehicle door. In the first state, the first lever is separated from the rotating assembly.

[0023] According to a third aspect of the present disclosure, a vehicle door is provided, including the foregoing vehicle door handle.

[0024] According to a fourth aspect of the present disclosure, a vehicle is provided, including the foregoing vehicle door.

[0025] In the technical solutions described above, when the vehicle door handle needs to be unlocked, an external force may be applied to the rotating assembly, so that the rotating assembly drives the transmission shaft to rotate by using the first lever, and further drives, through rotation of the transmission shaft, the push rod assembly to control the lock cylinder of the vehicle door handle to open the vehicle door. When the external force is removed, the first reset member may drive the transmission shaft to rotate in a reverse direction until the first lever abuts against the base, thereby ensuring positional accuracy of the first lever in an initial position. The transmission mechanism eliminates a conventional Bowden cable (including a cable and a plastic sheath that move relative to each other), which effectively avoids the problem that accumulated water enters between the cable and the plastic sheath and then freezes, and consequently, an unlocking function of the vehicle door handle fails.

[0026] Other features and advantages of the present disclosure will be described in detail in the subsequent description of embodiments.BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are intended to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific implementations to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the accompanying drawings: FIG. 1 is a schematic diagram of an example of a transmission assembly according to the present disclosure, where the transmission assembly corresponds to a hidden state of a handle of a vehicle door handle; FIG. 2 is a schematic diagram of an example of a transmission assembly according to the present disclosure, where the transmission assembly corresponds to a state of translating to extend out of a handle of a vehicle door handle; FIG. 3 is a schematic diagram of an example of a transmission assembly according to the present disclosure, where the transmission assembly corresponds to an unlocked state of a handle of a vehicle door handle; FIG. 4 is a schematic diagram of an example of a vehicle door handle in a first state according to the present disclosure; FIG. 5 is a schematic diagram of an example of a vehicle door handle in a second state according to the present disclosure; FIG. 6 is a schematic diagram of an example of a vehicle door handle in a third state according to the present disclosure; FIG. 7 is a partially enlarged view of an example of a vehicle door handle in a first state according to the present disclosure; FIG. 8 is a partially enlarged view of the vehicle door handle shown in FIG. 7 from another angle; FIG. 9 is a partially enlarged view of an example of a vehicle door handle in a third state according to the present disclosure; FIG. 10 is a partially enlarged view of the vehicle door handle shown in FIG. 9 from another angle; FIG. 11 is a schematic diagram of an example of a back side of a vehicle door handle in a first state according to the present disclosure; FIG. 12 is a schematic diagram of the back side of the vehicle door handle shown in FIG. 11 in a second state; FIG. 13 is another schematic diagram of an example of a back side of a vehicle door handle in a second state according to the present disclosure; FIG. 14 is a schematic diagram of an example of a vehicle door according to the present disclosure; and FIG. 15 is a schematic diagram of an example of a vehicle according to the present disclosure. Description of reference numerals

[0028] 1: Transmission assembly; 2: Vehicle door handle; 3: Vehicle door; 4: Vehicle; 110: Transmission shaft; 120: First lever; 130: Push rod assembly; 131: Rocker arm; 132: Link; 140: First reset member; 141: First torsion spring; 150: Second pin shaft; 151: Shaft cap; 161: First convex ring; 162: Second convex ring; 162: Second convex ring; 210: Base; 211: Accommodating cavity; 212: Clearance notch; 220: Handle; 230: Connecting plate; 300: Rotating assembly; 310: First pin shaft; 320: Rotating block; 321: Horizontal plate; 322: First vertical plate; 323: Second vertical plate; 330: Second lever; 340: Second reset member; 341: Second torsion spring; 410: First through hole; 420: Second through hole; 430: Through hole; 500: Limiting member; 510: First partition plate; 520: Second partition plate; 530: Third partition plate; 531: First concave part; 540: Fourth partition plate; 541: Second concave part; 610: First shielding member; 620: Second shielding member; 700: Pushing member; 800: Long connecting rod.DESCRIPTION OF EMBODIMENTS

[0029] The particular implementations of the present disclosure will be described in detail below in combination with the accompanying drawings. It will be understood that the particular implementations described herein are merely intended to describe and explain the present disclosure and are not intended to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated to the contrary, a directional term such as "inside" or "outside" may be defined based on an actual use direction of a relevant component, or may be defined based on a structure of the component. For example, a transmission assembly being located on an "outer side" of an accommodating cavity means that the transmission assembly is arranged outside an accommodating space of the accommodating cavity, for example, disposed on an outer side of a side wall of the accommodating cavity. An "outer wall" of the accommodating cavity being provided with a first partition plate and a second partition plate located at two ends of the transmission shaft means that the first partition plate and the second partition plate are arranged on an outer wall surface of the accommodating cavity, that is, located outside the accommodating cavity. A handle being hidden "inside" the accommodating cavity means that the handle is hidden on an inner side of the accommodating cavity.

[0031] In addition, the terms "first", "second" and the like used in the present disclosure are intended to distinguish one element from another element, and do not have an order or importance. When the following description relates to the accompanying drawings, unless otherwise indicated, same numbers in different accompanying drawings represent same or similar elements.

[0032] First, for ease of understanding of the technical solutions, it will be noted first that a vehicle door handle provided in the present disclosure has three states, which are specifically a hidden state shown in FIG. 4, a state of translating to extend out shown in FIG. 5, and an unlocked state shown in FIG. 6. The following describes in detail how the vehicle door handle switches between the three states. Correspondingly, a transmission assembly inside the vehicle door handle also corresponds to three states, which are specifically the three states in FIG. 1 to FIG. 3. A state in FIG. 1 corresponds to the state in FIG. 4, a state in FIG. 2 corresponds to the state in FIG. 5, and a state in FIG. 3 corresponds to the state in FIG. 6. A process described below in which a rotating assembly 300 in a transmission assembly drives, by using a first lever 120, a transmission shaft 110 to rotate means switching from the state of translating to extend out to the unlocked state. In a driving process from the hidden state to the state of translating to extend out, the rotating assembly 300 does not interact with the first lever 120. This is described in detail below.

[0033] Referring to FIG. 1 to FIG. 10, the present disclosure shows an example of a transmission assembly 1 applied to a vehicle door handle. The transmission assembly 1 includes a transmission shaft 110 rotatably mounted to a base 210 of the vehicle door handle, a first lever 120 mounted to the transmission shaft 110, a rotating assembly 300 configured to drive, by using the first lever 120 when an external force is applied, the transmission shaft 110 to rotate, and a first reset member 140 configured to drive, when the external force is removed, the transmission shaft 110 to rotate until the first lever 120 abuts against the base 210. When the external force is removed, a direction of reset rotation of the transmission shaft 110 is opposite to a direction of unlocking rotation of the transmission shaft 110 driven by the rotating assembly 300, so that the transmission assembly 1 can automatically reset to an initial state after the vehicle door handle is unlocked, to get ready for next unlocking. The present disclosure does not limit the structure of the first reset member 140, which may be, for example, a first torsion spring described below. In an embodiment of the present disclosure, the first lever 120 may be detachably mounted to the transmission shaft 110 by using a snap-fit structure. In some other embodiments, the first lever 120 may alternatively be integrally formed with the transmission shaft 110. The "external force" may be a pulling force provided when the handle 220 is manually pulled, or may be generated by a motor drive. This is not limited in the present disclosure.

[0034] The present disclosure does not limit how the transmission shaft 110 is rotatably mounted to the base 210. Such mounting may be implemented by using a plurality of partition plates and a second pin shaft 150 as described below. Alternatively, the transmission shaft 110 may be rotatably mounted to the base 210 by using a bearing seat and a bearing. In addition, it will be noted that the term "rotation" refers to rotational movement of the transmission shaft 110 around an axis of the transmission shaft 110.

[0035] The present disclosure does not limit the specific structure of the rotating assembly 300. The rotating assembly 300 may be connected to the handle 220 by using a linkage member described below, so that the rotating assembly 300 moves following movement of the handle 220. Alternatively, the rotating assembly 300 may be directly connected to the handle 220.

[0036] In the technical solutions described above, when the vehicle door handle needs to be unlocked, an external force may be applied to the rotating assembly 300, so that the rotating assembly 300 drives, by using the first lever 120, the transmission shaft 110 to rotate, and further drives, through rotation of the transmission shaft 110, a lock cylinder of the vehicle door handle to open a vehicle door. When the external force is removed, the first reset member 140 may drive the transmission shaft 110 to rotate in a reverse direction until the first lever 120 abuts against the base 210, thereby ensuring positional accuracy of the first lever 120 at an initial position, and preventing accidental unlocking caused by an inaccurate position during switching from the hidden state to the state of translating to extend out. In addition, compared with a case in which a locking member is separately added to ensure the positional accuracy of the first lever 120 at the initial position, in this design, the structure is simpler and a smaller space is occupied. The transmission assembly 1 eliminates a conventional Bowden cable (including a cable and a plastic sheath that move relative to each other), which effectively avoids the problem that accumulated water enters between the cable and the plastic sheath and then freezes, and consequently, an unlocking function of the vehicle door handle fails.

[0037] Referring to FIG. 7 and FIG. 9, in these embodiments of the present disclosure, the first reset member 140 may be a first torsion spring 141. The first torsion spring 141 may be sleeved on the transmission shaft 110. One end of the first torsion spring 141 may be configured to be connected to the base 210, and the other end of the first torsion spring 141 may be connected to the transmission shaft 110. In this way, when the transmission shaft 110 rotates, the first torsion spring 141 is driven to rotate and deform to store energy. After the external force is removed, the first torsion spring 141 drives, under the action of an elastic force, the transmission shaft 110 to rotate in a reverse direction to reset. In the embodiments shown in FIG. 7 and FIG. 9, the first torsion spring 141 may be arranged at a position on the transmission shaft 110 that is close to an end portion of the transmission shaft 110. In addition, in some other embodiments, the first torsion spring 141 may be arranged at a middle position of the transmission shaft 110. This is not limited in the present disclosure.

[0038] Referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the rotating assembly 300 may include: a first pin shaft 310, configured to be mounted to the base 210; and a rotating block 320, rotatably mounted to the first pin shaft 310 and configured to rotate around the first pin shaft 310 when an external force is applied. A second lever 330 may be formed on the rotating block 320, and the second lever 330 is configured to come into contact and cooperate with the first lever 120. During switching from the hidden state in FIG. 1 to the state of translating to extend out in FIG. 2, no driving relationship is generated between the first lever 120 and the second lever 330. In other words, in the hidden state shown in FIG. 1, the first lever 120 may be spaced apart from the second lever 330. During the movement from FIG. 1 to FIG. 2, the second lever 330 gradually approaches the first lever 120. When the second state is reached, the first lever 120 and the second lever 330 are exactly in contact with each other. During the movement from FIG. 2 to FIG. 3, the first lever 120 and the second lever 330 begin to come into contact and cooperate with each other. In other words, the second lever 330 pushes the first lever 120 to drive the transmission shaft 110 to move.

[0039] The present disclosure does not limit the connection relationship between the second lever 330 and the rotating block 320. The second lever 330 and the rotating block 320 may be detachably connected by using a snap-fit structure, or may be integrally formed.

[0040] To enable the rotating block 320 to reset from the unlocked state shown in FIG. 3 to the hidden state shown in FIG. 1 or the state of translating to extend out shown in FIG. 2 when an external force is removed, referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the rotating assembly 300 may further include a second reset member 340 connected to the rotating block 320, and the second reset member 340 is configured to drive, when the external force is removed, the rotating block 320 to reset.

[0041] The present disclosure does not limit the specific structure of the second reset member 340. For example, in these embodiments of the present disclosure, the second reset member 340 may be a second torsion spring 341. One end of the second torsion spring 341 may be connected to the first pin shaft 310, and the other end of the second torsion spring 341 may be connected to the rotating block 320. In this way, when the rotating block 320 rotates, the second torsion spring 341 can follow the rotating block 320 to store energy; and when an external force is removed, the second torsion spring 341 drives the rotating block 320 to reset.

[0042] The present disclosure does not limit the specific structure of the rotating block 320. Referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the rotating block 320 may include two first vertical plates 322 spaced apart from each other. Each of the first vertical plates 322 may be sleeved on the first pin shaft 310. Specifically, each of the first vertical plates 322 is provided with a first through hole 410, and the first pin shaft 310 sequentially passes through two first through holes 410. The second torsion spring 341 may be sleeved on the first pin shaft 310, and the second torsion spring 341 may be located between the two first vertical plates 322. In this case, one end of the second torsion spring 341 may be fastened to the first pin shaft 310, and the other end of the second torsion spring 341 may be fastened to any one of the first vertical plates 322. Compared with a case in which the second torsion spring 341 is arranged on an outer side of the rotating block 320, that is, arranged at an end portion of the first pin shaft 310, in the present disclosure, two first vertical plates 322 are spaced apart from each other, and the second torsion spring 341 is arranged between the two first vertical plates 322, thereby providing larger mounting space for the second torsion spring 341. In other words, a second torsion spring 341 with a longer spring wire and a larger diameter can be provided, thereby effectively increasing resetting torque and prolonging service life of the second torsion spring 341. In addition, in some other embodiments, alternatively, one end of the second torsion spring 341 may be fastened to the base 210, and the other end of the second torsion spring 341 may be fastened to the rotating block 320.

[0043] Referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the rotating block 320 may further include a horizontal plate 321 connected between the two first vertical plates 322, and a second vertical plate 323 connected to the horizontal plate 321. The second vertical plate 323 may be connected to a side of the horizontal plate 321 facing away from the first vertical plates 322, and the second vertical plate 323 is configured to be connected to the handle 220 of the vehicle door handle. In this design, when the vehicle door needs to be unlocked, an external force is applied to the handle 220, so that an entire rotating block 320 is driven, by using the second vertical plate 323, to rotate. The present disclosure does not limit the connection manner between the second vertical plate 323 and the handle 220. For example, in some embodiments, the second vertical plate 323 may be provided with a second through hole 420, and the second through hole 420 is drivingly connected to the handle 220 by using a linkage member described below, which is described in detail below. Details are not described herein.

[0044] Further, the present disclosure does not limit the quantity of second vertical plates 323. For example, in the embodiments shown in FIG. 1 to FIG. 3, there may be two second vertical plates 323, and the two second vertical plates 323 are spaced apart from each other. In this design, strength of the rotating block 320 (torque is transmitted through the two second vertical plates 323) can be improved and service life can be prolonged. In addition, compared with an entire solid block, such an H-shaped structure has a lighter weight, which facilitates weight reduction of an entire vehicle or a vehicle door.

[0045] The present disclosure does not limit the connection manner between the horizontal plate 321, the first vertical plate 322, and the second vertical plate 323. For example, in these embodiments of the present disclosure, the horizontal plate 321, the first vertical plate 322, and the second vertical plate 323 may be integrally formed to reduce assembly difficulty. In addition, in some other embodiments, the horizontal plate 321, the first vertical plate 322, and the second vertical plate 323 may alternatively be detachably assembled.

[0046] Referring to FIG. 1 to FIG. 10, in these embodiments of the present disclosure, the transmission assembly 1 may further include a push rod assembly 130. The push rod assembly 130 is configured to be connected between the transmission shaft 110 and the lock cylinder of the vehicle door handle. The push rod assembly 130 controls the lock cylinder under driving of rotation of the transmission shaft 110. In this case, the lock cylinder may have a self-locking function, so that the lock cylinder automatically locks after the push rod assembly 130 resets.

[0047] The present disclosure does not limit the push rod assembly 130. For example, referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the push rod assembly 130 may include a rocker arm 131 mounted to the transmission shaft 110, and a link 132 hinged to an end of the rocker arm 131 away from the transmission shaft 110. In this design, when the transmission shaft 110 rotates, the rocker arm 131 rotates following the transmission shaft 110 and drives the link 132 to move, so that the link 132 can control the lock cylinder to unlock. Movement of the link 132 may be adaptively designed based on a structure of the lock cylinder. A required movement form, such as simultaneous rotation and linear movement, can be achieved through direct driving by the rocker arm 131 and assistance from another limiting structure. In addition, in some other embodiments, the push rod assembly 130 may alternatively include only a curved rod. Movement of the push rod assembly 130 may be adaptively designed based on an unlocking method of the lock cylinder and a positional relationship between the transmission shaft 110 and the lock cylinder. The movement of the push rod assembly 130 may be linear, rotational, or linear combined with rotational, provided that the lock cylinder can be unlocked.

[0048] In an embodiment of the present disclosure, the rocker arm 131 may be integrally formed with the transmission shaft 110, or may be assembled on the transmission shaft 110. The link 132 may be bent as shown in FIG. 1, or may be a straight rod. This is not limited in the present disclosure.

[0049] Referring to FIG. 1 to FIG. 3, in these embodiments of the present disclosure, the first lever 120 and the push rod assembly 130 may be respectively mounted at positions on the transmission shaft 110 that are close to end portions. The transmission assembly 1 may further include a first convex ring 161 sleeved on the transmission shaft 110 and a second convex ring 162 sleeved on the transmission shaft 110. The first convex ring 161 and the second convex ring 162 are located between the first lever 120 and the push rod assembly 130. In this design, the first convex ring 161 and the second convex ring 162 can serve as gripping positions for a manipulator during assembly. In addition, the first convex ring 161 and the second convex ring 162 can prevent a case in which accumulated water (for example, rainwater or snowmelt) that reaches the middle portion of the transmission shaft 110 flows towards the rocker arm 131 or the first lever 120 at either end of the transmission shaft 110, and then the accumulated water freezes, leading to unlocking failure. It will be understood that the accumulated water may enter through a gap between window glass and the vehicle door. Referring to FIG. 4 to FIG. 6, a first water baffle 610 and a second water baffle 620 may be arranged at positions corresponding to the rocker arm 131 and the first lever 120. However, a water baffle cannot be arranged at the middle portion of the transmission shaft 110 due to interference caused by a need to mount another component at the middle portion. Consequently, water tends to accumulate.

[0050] Referring to FIG. 4 to FIG. 10, according to a second aspect of the present disclosure, a vehicle door handle 2 is provided, including a base 210, a handle 220, and the foregoing transmission assembly 1. The transmission shaft 110 is rotatably mounted to the base 210, and the handle 220 may be drivingly connected to the rotating assembly 300. The handle 220 is an external handle of a vehicle door, and a person may pull the handle 220 to implement unlocking. The present disclosure does not limit the driving connection manner between the handle 220 and the rotating assembly 300. For example, a linkage member may be arranged therebetween.

[0051] The present disclosure does not limit the specific form of the linkage member. The linkage member may be a connecting plate 230 shown in FIG. 8 and FIG. 10, or a long connecting rod 800 shown in FIG. 13, provided that the linkage member can transmit movement of the handle 220 to the rotating assembly 300.

[0052] Referring to FIG. 4 to FIG. 10, in these embodiments of the present disclosure, the base 210 may have an accommodating cavity 211. The accommodating cavity 211 is configured to accommodate the handle 220, and the transmission shaft 110 may be located on an outer side of the accommodating cavity 211. Such a design facilitates assembly of the transmission assembly 1 and facilitates maintenance of the transmission assembly 1. A clearance notch 212 may be formed on the base 210, and the clearance notch 212 is configured to allow the first lever 120 to extend into the accommodating cavity 211. The clearance notch 212 is provided, so that the external transmission assembly 1 can transmit power to the internal rotating assembly 300 through the clearance notch 212. In addition, arranging the clearance notch 212 may also provide a positioning function during assembly of the transmission assembly 1, thereby preventing axial misalignment. When an external force is removed, the transmission shaft 110 rotates to reset until the first lever 120 abuts against the base 210. Therefore, referring to FIG. 7, a protruding part may be provided at a top of the clearance notch 212 for the first lever 120 to abut against, and a shock-absorbing pad may be provided on the protruding portion.

[0053] Referring to FIG. 7 and FIG. 9, in these embodiments of the present disclosure, a first partition plate 510 and a second partition plate 520 may be spaced apart on an outer wall of the accommodating cavity 211. The vehicle door handle may further include a second pin shaft 150. The second pin shaft 150 is rotatably arranged between the first partition plate 510 and the second partition plate 520, and the second pin shaft 150 may pass through the first partition plate 510 and the second partition plate 520. The transmission shaft 110 may be configured as a hollow cylinder, and the transmission shaft 110 is sleeved on an outer periphery of the second pin shaft 150. In this design, the transmission shaft 110 may be fixedly connected to the second pin shaft 150, so that when subjected to a force, the transmission shaft 110 can drive the second pin shaft 150 to rotate synchronously relative to the base 210. In addition, in some other embodiments, the second pin shaft 150 may be fastened to the base 210. In this case, the transmission shaft 110 is configured to be capable of rotating relative to the second pin shaft 150. To prevent axial movement of the second pin shaft 150, a shaft cap 151 may be arranged at each of two ends of the second pin shaft 150. A size of the shaft cap 151 is greater than a size of a through hole 430 described below, thereby preventing the axial movement of the second pin shaft 150. For ease of mounting, at least one of the shaft caps 151 is configured to be detachably connected to an end portion of the second pin shaft 150.

[0054] To allow the second pin shaft 150 to pass through between the first partition plate 510 and the second partition plate 520, referring to FIG. 7 and FIG. 9, in these embodiments of the present disclosure, each of the first partition plate 510 and the second partition plate 520 may be provided with a through hole 430. The through hole 430 corresponds to the second pin shaft 1500. The outer wall of the accommodating cavity 211 may further be provided with a limiting member 500. The limiting member 500 is located between the first partition plate 510 and the second partition plate 520. When the limiting member 500 enables the transmission shaft 110 to move in a first radial direction until being limited by the limiting member 500, an axis of the transmission shaft 110 coincides with an axis of the through hole 430 (so that the second pin shaft 150 passes through the through hole 430 and the transmission shaft 110). The first radial direction is a corresponding arrow direction in FIG. 7 and FIG. 9. In other words, the transmission shaft 110 is mounted to the limiting member in a direction from an outer side toward an inner side of the figure. In other words, the transmission shaft 110 is mounted on a side of the base 210 in a direction from a position away from the base 210 toward a position close to the base 210. When the transmission shaft 110 is mounted in place, that is, limited by the limiting member 500, the axis of the transmission shaft 110 coincides with the axis of the through hole 430, so that the second pin shaft 150 can pass through the two through holes 430 and a central hole portion of the transmission shaft 110. In this design, assembly is facilitated and there is no need to manually align the transmission shaft 110 with the through hole 430. The operation is simple, and difficulty of an assembly process is reduced.

[0055] The present disclosure does not limit the specific structure of the limiting member 500. Referring to FIG. 7 and FIG 9, the limiting member 500 may include a third partition plate 530 and a fourth partition plate 540. The third partition plate 530 may form a first concave part 531 configured to accommodate the transmission shaft 110, and the fourth partition plate 540 may form a second concave part 541 configured to accommodate the transmission shaft 110. The first concave part 531 and the second concave part 541 may be used to restrict the transmission shaft 110 at two ends in a second radial direction. The first radial direction is perpendicular to the second radial direction. Referring to FIG. 7 and FIG. 9, the second radial direction corresponds to a corresponding arrow direction in the figure, that is, a height direction in the figure. In this design, when the transmission shaft 110 is assembled, the transmission shaft 110 can be mounted in the first concave part 531 and the second concave part 541 in the first radial direction. In this case, the transmission shaft 110 is limited by the first concave part 531 and the second concave part 541 in the height direction and a direction close to the base 210.

[0056] The present disclosure does not limit structures of the third partition plate 530 and the fourth partition plate 540. For example, in the embodiments shown in FIG. 7 and FIG. 9, each of the third partition plate 530 and the fourth partition plate 540 may be configured as an L-shape to form an "included angle space" for accommodating the transmission shaft 110. In addition, in the second radial direction, the third partition plate 530 and the fourth partition plate 540 limit the transmission shaft 110 in opposite directions. Specifically, when the transmission shaft 110 is mounted in the "included angle space" of the third partition plate 530 and the fourth partition plate 540, the third partition plate 530 can limit movement of the transmission shaft 110 in one direction along the second radial direction, and the fourth partition plate 540 can limit movement of the transmission shaft 110 in the other direction along the second radial direction. Through cooperation of the third partition plate 530 and the fourth partition plate 540, movement of the transmission shaft 110 in the second radial direction can be limited. In addition, in some other embodiments, each of the third partition plate 530 and the fourth partition plate 540 may be provided with an opening facing away from the base 210, to respectively limit the transmission shaft 110 in both directions along the second radial direction. In these embodiments of the present disclosure, to prevent the transmission shaft 110 from detaching from the first concave part 531 and the second concave part 541 in a direction opposite to a mounting direction, a recessed structure may be formed on one of the third partition plate 530 and the fourth partition plate 540 that is configured to support the transmission shaft 110 on a lower side, so that the transmission shaft 110 can be fastened in the first radial direction.

[0057] As described above, in these embodiments of the present disclosure, the vehicle door handle 2 may have the following states: a first state, in which the handle 220 is hidden in the accommodating cavity 211, corresponding to FIG. 4, FIG. 7, and FIG. 8, where in this state, the handle 220 may be fully accommodated in the accommodating cavity 211, that is, an end surface of the handle 220 does not protrude from a surface of the vehicle door; a second state, in which the handle 220 translates to extend out of the accommodating cavity 211, corresponding to FIG. 5; and a third state, in which one end of the handle 220 can rotate around the other end of the handle 220 to unlock the vehicle door, corresponding to FIG. 6, FIG. 9, and FIG. 10. In the first state, the first lever 120 is separated from the rotating assembly 300, so that when the vehicle door handle moves from the first state to the second state, the first lever 120 is not driven to drive the transmission shaft 110 to rotate, thereby preventing accidental unlocking.

[0058] The present disclosure does not limit how the vehicle door handle 2 moves from the first state to the second state, which may be electrically driven or manually driven. For example, in an embodiment shown in FIG. 11 (electrically driven), a motor (not shown in the figure) may drive a pushing member 700 to move, and the pushing member 700 drives, by using the rocker arm 131 and the connecting plate 230, the handle 220 to extend outward to reach the state shown in FIG. 12. In an embodiment shown in FIG. 13, the motor may directly drive the rocker arm 131 to move, and the rocker arm 131 pushes the handle 220. The handle 220 extends outward under the action of another limiting structure. When extending outward, the handle 220 may drive the long connecting rod 800 to move. During movement, the long connecting rod 800 may simultaneously drive the rotating assembly 300 to move. In a process in which the vehicle door handle moves from the first state to the second state, the linkage member may drive the second lever 330 to move until the second lever 330 is in contact with the first lever 120, so that the first lever 120 is actuated by using the second lever 330 during movement from the second state to the third state.

[0059] Referring to FIG. 14, according to a third aspect of the present disclosure, a vehicle door 3 is provided, including the foregoing vehicle door handle 2. Because the vehicle door 3 has all beneficial effects of the foregoing vehicle door handle 2, details are not described herein again.

[0060] Referring to FIG. 15. According to a fourth aspect of the present disclosure, a vehicle 4 is provided, including the foregoing vehicle door 3. Because the vehicle 4 has all beneficial effects of the foregoing vehicle door 3, details are not described herein again.

[0061] The foregoing describes in detail example implementations of the present disclosure with reference to the accompanying drawings. However, the present disclosure is not limited to specific details in the foregoing implementations. Multiple simple variations can be made to the technical solutions of the present disclosure within the technical concept scope of the present disclosure, and all these simple variations fall within the protection scope of the present disclosure.

[0062] Moreover, it will be noted that various specific technical features described in the specific implementations described above can be combined in any suitable manner without contradiction, and to avoid unnecessary repetition, various possible combinations are not separately explained in the present disclosure.

[0063] In addition, the various different implementations of the present disclosure may also be combined in any manner, and the combination will also be considered as content disclosed in the present disclosure provided that the combination does not deviate from the idea of the present disclosure.

Claims

1. A transmission assembly (1), applied to a vehicle door handle, wherein the transmission assembly comprises: a transmission shaft (110), configured to be rotatably mounted to a base (210) of the vehicle door handle; a first lever (120), mounted to the transmission shaft (110); a rotating assembly (300), configured to drive, by using the first lever (120) when an external force is applied, the transmission shaft (110) to rotate; and a first reset member (140), configured to drive, when the external force is removed, the transmission shaft (110) to rotate until the first lever (120) abuts against the base (210).

2. The transmission assembly (1) according to claim 1, wherein the first reset member (140) is a first torsion spring (141), the first torsion spring (141) is sleeved on the transmission shaft (110), one end of the first torsion spring (141) is configured to be connected to the base (210), and the other end of the first torsion spring (141) is connected to the transmission shaft (110).

3. The transmission assembly (1) according to claim 1 or 2, wherein the rotating assembly (300) comprises: a first pin shaft (310), configured to be mounted to the base (210); and a rotating block (320), rotatably mounted to the first pin shaft (310) and configured to rotate around the first pin shaft (310) when the external force is applied, wherein a second lever (330) is formed on the rotating block (320), and the second lever (330) is configured to come into contact and cooperate with the first lever (120).

4. The transmission assembly (1) according to claim 3, wherein the rotating assembly (300) further comprises a second reset member (340) connected to the rotating block (320), and the second reset member (340) is configured to drive, when the external force is removed, the rotating block (320) to reset.

5. The transmission assembly (1) according to claim 4, wherein the second reset member (340) is a second torsion spring (341), one end of the second torsion spring (341) is connected to the first pin shaft (310), and the other end of the second torsion spring (341) is connected to the rotating block (320).

6. The transmission assembly (1) according to claim 5, wherein the rotating block (320) comprises two first vertical plates (322) spaced apart from each other, each of the two first vertical plates (322) is sleeved on the first pin shaft (310), the second torsion spring (341) is sleeved on the first pin shaft (310), the second torsion spring (341) is located between the two first vertical plates (322), one end of the second torsion spring (341) is fastened to the first pin shaft (310), and the other end of the second torsion spring (341) is fastened to any one of the first vertical plates (322).

7. The transmission assembly (1) according to claim 6, wherein the rotating block (320) further comprises a horizontal plate (321) connected between the two first vertical plates (322) and a second vertical plate (323) connected to the horizontal plate (321), the second vertical plate (323) is connected to a side of the horizontal plate (321) facing away from the first vertical plates (322), and the second vertical plate (323) is configured to be connected to a handle (220) of the vehicle door handle.

8. The transmission assembly (1) according to claim 7, wherein the horizontal plate (321), the first vertical plates (322), and the second vertical plate (323) are integrally formed.

9. The transmission assembly (1) according to any one of claims 1 to 8, further comprising a push rod assembly (130), wherein the push rod assembly (130) is configured to be connected between the transmission shaft (110) and a lock cylinder of the vehicle door handle, and the push rod assembly (130) controls the lock cylinder under driving of rotation of the transmission shaft (110).

10. The transmission assembly (1) according to claim 9, wherein the push rod assembly (130) comprises a rocker arm (131) mounted to the transmission shaft (110), and a link (132) hinged to an end of the rocker arm (131) away from the transmission shaft (110).

11. The transmission assembly (1) according to claim 9 or 10, wherein the first lever (120) and the push rod assembly (130) are respectively mounted at positions on the transmission shaft (110) that are close to end portions of the transmission shaft (110), the transmission assembly (1) further comprises a first convex ring (161) sleeved on the transmission shaft (110) and a second convex ring (162) sleeved on the transmission shaft (110), and the first convex ring (161) and the second convex ring (162) are located between the first lever (120) and the push rod assembly (130).

12. A vehicle door handle (2), comprising a base (210), a handle (220), and the transmission assembly (1) according to any one of claims 1 to 11, wherein the transmission shaft (110) is rotatably mounted to the base (210), and the handle (220) is drivingly connected to the rotating assembly (300).

13. The vehicle door handle (2) according to claim 12, wherein the base (210) has an accommodating cavity (211), the accommodating cavity (211) is configured to accommodate the handle (220), the transmission shaft (110) is located on an outer side of the accommodating cavity (211), a clearance notch (212) is formed on the base (210), and the clearance notch (212) is configured to allow the first lever (120) to extend into the accommodating cavity (211).

14. The vehicle door handle (2) according to claim 13, wherein a first partition plate (510) and a second partition plate (520) are spaced apart on an outer wall of the accommodating cavity (211), the vehicle door handle further comprises a second pin shaft (150), the second pin shaft (150) is rotatably arranged between the first partition plate (510) and the second partition plate (520), the second pin shaft (150) passes through the first partition plate (510) and the second partition plate (520), the transmission shaft (110) is configured as a hollow cylinder, and the transmission shaft (110) is sleeved on an outer periphery of the second pin shaft (150).

15. The vehicle door handle (2) according to claim 14, wherein each of the first partition plate (510) and the second partition plate (520) is provided with a through hole (430), and the through hole (430) corresponds to the second pin shaft (150); and the outer wall of the accommodating cavity (211) is further provided with a limiting member (500), the limiting member (500) is located between the first partition plate (510) and the second partition plate (520), and the limiting member (500) is configured such that, when the transmission shaft (110) moves in a first radial direction until being limited by the limiting member (500), an axis of the transmission shaft (110) coincides with an axis of the through hole (430).

16. The vehicle door handle (2) according to claim 15, wherein the limiting member (500) comprises a third partition plate (530) and a fourth partition plate (540),a first concave part (531) configured to accommodate the transmission shaft (110) is formed on the third partition plate (530), a second concave part (541) configured to accommodate the transmission shaft (110) is formed on the fourth partition plate (540), and the first concave part (531) and the second concave part (541) are configured to limit the transmission shaft (110) at two ends in a second radial direction, wherein the first radial direction is perpendicular to the second radial direction.

17. The vehicle door handle (2) according to any one of claims 13 to 16, having: a first state, in which the handle (220) is hidden in the accommodating cavity (211); a second state, in which the handle (220) translates to extend out of the accommodating cavity (211); and a third state, in which one end of the handle (220) is capable of rotating around the other end of the handle (220) to unlock a vehicle door, wherein in the first state, the first lever (120) is separated from the rotating assembly (300).

18. A vehicle door (3), comprising the vehicle door handle (2) according to any one of claims 12 to 17.

19. A vehicle (4), comprising the vehicle door (3) according to claim 18.

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