Car door handle capable of achieving stable transmission

Abstract

The utility model discloses a stable transmission car door handle which comprises a shell framework and a driving device, a handle, a front rotating arm and a rear pull rod are arranged on the shell framework, the front rotating arm and the rear pull rod are movably connected with the two ends of the handle, a push rod is arranged on the shell framework in a sliding mode, and the push rod is matched with the front rotating arm and the rear pull rod in a pushing mode. The output end of the driving device is connected with a cam rocker arm, the first end of the transmission rod is rotationally connected to the power output end of the cam rocker arm, the second end of the transmission rod is rotationally connected to the push rod, and the driving device drives the push rod to move on the shell framework along a straight line through the cam rocker arm; the push rod pushes the front rotating arm and the rear pull rod to rotate towards the opening direction of the handle. The automobile door handle has the effects of reducing noise during operation of the automobile door handle and improving the operation stability of the automobile door handle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile door handles, in particular to a vehicle door handle with stable transmission. Background Art

[0002] The existing Chinese patent with announcement number CN219840502U discloses an electric door handle structure, which has an initial state and a use state, including a handle frame, a shell frame, a front rotating arm and a rear rotating arm, the two ends of the handle frame are respectively movably connected to the front rotating arm and the rear rotating arm, the ends of the front rotating arm and the rear rotating arm away from the handle frame are hinged on the shell frame, and when the door handle structure is in the initial state, the upper end surface of the handle frame is flush with the upper end surface of the shell frame; it also includes a connecting rod and a driving block, one end of the connecting rod is hinged on the front rotating arm, and the connecting rod is connected to the driving block. The other end of the rod is movably connected to the rear rotating arm; the driving block is movably arranged in the shell frame, and the driving block is used to movably abut against the front rotating arm or the connecting rod; when the door handle structure switches from the initial state to the use state, the driving block is used to push the front rotating arm to rotate relative to the shell frame, so that the front rotating arm and the rear rotating arm push the handle frame out in parallel; when the door handle structure switches from the use state to the initial state, the driving block is used to push the connecting rod to move, so that the front rotating arm and the rear rotating arm drive the handle frame to reset to the initial state.

[0003] However, the above-mentioned electric door handle structure has the following disadvantages: the electric door handle drives the connecting rod to move through the driving block, and then the connecting rod drives the front rotating arm and the rear rotating arm to rotate, so that the front rotating arm and the rear rotating arm drive the handle frame to reset. However, in the process of the driving block driving the connecting rod to move, since the connecting rod lacks a limiting structure, the operation of the various components connected to the connecting rod is not stable enough, which makes the connecting rod easy to shake in multiple directions during movement, resulting in the door handle shaking in the process of resetting the handle frame to the initial state. At the same time, the shaking and collision between the components are likely to produce noise. With regard to the above-mentioned defects, improvements are urgently needed. Utility Model Content

[0004] The utility model aims to provide a vehicle door handle with stable transmission, which has the effects of reducing the noise of the vehicle door handle when it is in operation and improving the operation stability of the vehicle door handle.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a vehicle door handle with stable transmission, comprising a housing frame and a driving device, the housing frame is provided with a handle, a front rotating arm and a rear pull rod movably connected to both ends of the handle, the housing frame is slidably provided with a push rod, and the push rod is pushed and matched with the front rotating arm and the rear pull rod;

[0006] It also includes a transmission rod, the output end of the driving device is connected to a cam rocker arm, the first end of the transmission rod is rotationally connected to the power output end of the cam rocker arm, the second end of the transmission rod is rotationally connected to the push rod, the driving device drives the push rod to move in a straight line on the shell frame through the cam rocker arm, and the push rod pushes the front rotating arm and the rear pull rod to rotate toward the direction of opening the handle.

[0007] By adopting the above technical scheme, the push rod in the prior art lacks a limiting structure, which makes the push rod prone to shaking during the transmission process. In this scheme, the push rod is slidably set on the shell frame. When the driving device drives the cam rocker arm to rotate, the cam rocker arm drives the push rod to only make linear motion on the shell frame, and then the push rod drives the front rotating arm and the rear pull rod to rotate, and finally drives the handle to switch from the closed state to the open state through the front rotating arm and the rear pull rod. The utility model uses the shell frame to limit the push rod laterally, so that the push rod will not shake in its lateral direction when it is translated on the shell frame, thereby indirectly improving the operating stability of the handle during the switching from the closed state to the open state, and at the same time can also reduce the mutual collision between components caused by the shaking of the push rod, thereby reducing the noise of the door handle during operation, which has the effect of reducing the noise of the door handle during operation and improving the smoothness of the door handle operation.

[0008] The utility model is further configured as follows: the shell frame is provided with a sliding cavity along its length direction, and is connected to track grooves on both sides of the sliding cavity; the push rod is slidably arranged in the sliding cavity; sliding parts constrained in the track grooves are provided on both sides of the push rod; the sliding parts slide in cooperation with the corresponding track groove guides.

[0009] By adopting the above technical scheme, the push rod can only move horizontally along the opening direction of the sliding cavity. At the same time, by utilizing the limiting and guiding effect between the sliding parts on both sides of the push rod and the track grooves on the inner wall of the sliding cavity, the consistency of the sliding direction of the push rod in the sliding cavity can be ensured, and the push rod can be effectively prevented from detaching from the sliding cavity.

[0010] The utility model is further configured as follows: a group of sliding parts are respectively provided at positions on both sides of the push rod corresponding to the front rotating arms and the rear pull rods, and a group of track grooves are respectively provided at positions of the shell frame close to the front rotating arms and the rear pull rods.

[0011] By adopting the above technical solution, multi-point guiding cooperation is achieved between the front and rear two sets of sliding parts and the corresponding track grooves, thereby improving the smoothness of the sliding of the push rod in the sliding cavity.

[0012] The utility model is further configured as follows: the sliding parts are symmetrically arranged on both sides of the push rod, and the sliding parts on both sides are on the same plane.

[0013] The utility model is further configured as follows: a plurality of guide ribs are disposed on the side wall of the sliding portion, the plurality of guide ribs are arranged in parallel along the sliding direction of the push rod, and the sliding portion is slidably matched with the inner wall of the track groove through the guide ribs.

[0014] By adopting the above technical solution, the addition of guide ribs can reduce the effective contact area between the sliding part and the inner wall of the track groove, thereby reducing the friction between the sliding part and the track groove, and further making the sliding part slide more smoothly in the track groove.

[0015] The utility model is further configured as follows: a rotation connection portion is provided at one end of the push rod close to the driving device, and the rotation connection portion is provided on the center line of the push rod, and the second end portion of the transmission rod is rotationally connected to the rotation connection portion.

[0016] By adopting the above technical solution and setting the rotating connection part on the center line of the push rod, the driving force given to the push rod by the transmission rod can be closer to the center position of the push rod, so that the direction of the thrust generated by the push rod is more consistent.

[0017] The utility model is further configured as follows: a torsion spring is provided between the front rotating arm and the shell frame, and the torsion spring has a tendency to drive the front rotating arm to bring the handle back to a closed state, and when the handle is in a closed state, a first angle α is formed between the central axis M of the transmission rod and the central axis L of the cam rocker arm.

[0018] By adopting the above technical solution, when the driving device drives the push rod to reset, the torsion spring can drive the front rotating arm to automatically reset in the handle closing direction by relying on its own accumulated elastic potential energy. When the handle of the utility model is in a closed state, a first angle α is formed between the central axis M of the transmission rod and the central axis L of the cam rocker arm, so that the cam rocker arm provides a larger instantaneous starting force component to the transmission rod, thereby improving the instantaneous starting force of the cam rocker arm in the corresponding state, which is beneficial for the cam rocker arm to provide a greater driving force at the moment of starting, and drives the transmission rod to drive the push rod to move, especially when the handle is frozen by ice and snow, it can have an ice-breaking effect when the handle is opened.

[0019] The utility model is further configured as follows: the shell frame is provided with a plurality of strip ribs on both sides of the sliding cavity, the plurality of strip ribs are arranged in parallel along the length direction of the shell frame, and track grooves constraining the corresponding sliding parts are formed between adjacent strip ribs.

[0020] By adopting the above technical solution, the strip ribs on both sides can laterally limit the sliding part in the track groove, so that the sliding direction of the sliding part is consistent with the length direction of the track groove, thereby improving the stability of the push rod moving in the sliding cavity.

[0021] The utility model is further configured as follows: a side cover is fixedly connected to the shell frame, the sliding cavity is formed between the side cover and the shell frame, the side cover is provided with retaining ribs on both sides corresponding to the push rod, and the two sides of the push rod are guided and slidably matched with the retaining ribs on the corresponding sides.

[0022] By adopting the above technical solution, the side cover can prevent the push rod from detaching from the shell frame, and at the same time, the side cover can also isolate the noise generated by the push rod sliding on the shell frame in the sliding cavity, thereby improving the noise reduction effect of the utility model.

[0023] The utility model is further configured as follows: the driving device includes a driving motor, a worm gear arranged at the output end of the driving motor, a double gear meshing with the worm gear, and a transmission gear meshing with the output end of the double gear; the cam rocker arm is connected to the output end of the transmission gear.

[0024] By adopting the above technical solution, the driving motor drives the worm to rotate forward or reverse, and in turn drives the cam rocker arm to rotate forward or reverse through the double gear and the transmission gear, thereby driving the push rod through the transmission rod to push in the forward direction of the handle opening direction or in the reverse direction of the handle closing direction.

[0025] In summary, the utility model has the following beneficial effects:

[0026] A sliding cavity is opened in the length direction of the shell frame, and track grooves are connected to the two sides of the sliding cavity. A push rod is slidably arranged in the sliding cavity. The sliding parts on both sides of the push rod are constrained in the track grooves on the corresponding sides and the two are guided and slidably matched. When the driving device drives the cam rocker arm to rotate, the cam rocker arm drives the push rod to slide linearly relative to the shell frame only in a predetermined direction, and then the push rod drives the front rotating arm and the rear pull rod to rotate, and finally the front rotating arm and the rear pull rod drive the handle to switch from a closed state to an open state. The push rod in the prior art lacks a limiting structure, which makes the push rod easy to shake during the transmission process. In this solution, the sliding parts on both sides of the push rod are slidably arranged in the track grooves corresponding to the shell frame. When the driving device drives the cam rocker arm to rotate When the door is in motion, the cam rocker arm drives the push rod to only make a linear motion along the length direction of the track groove on the shell frame, and then the push rod pushes the front rotating arm and the rear pull rod to rotate, and finally drives the handle to switch from the closed state to the open state through the front rotating arm and the rear pull rod. The utility model uses the track groove of the shell frame to laterally limit the sliding parts on both sides of the push rod, so that the push rod will not shake in its lateral direction when it moves horizontally on the shell frame, thereby indirectly improving the operating stability of the handle during the switching from the closed state to the open state, and at the same time can also reduce the mutual collision between components caused by the shaking of the push rod, thereby reducing the noise of the door handle during operation, which has the effect of reducing the noise of the door handle during operation and improving the smoothness of the door handle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall structure diagram of the utility model.

[0028] Figure 2 This is a front view of the utility model, with the handle in a closed state.

[0029] Figure 3 This utility model Figure 2 Cross-sectional view of section AA.

[0030] Figure 4 This utility model Figure 2 Cross-sectional view of section BB.

[0031] Figure 5 This utility model Figure 4 A partial enlarged view of the middle C area.

[0032] Figure 6 It is an internal structure diagram of the utility model, and the side cover is not shown.

[0033] Figure 7 This utility model Figure 6 Exploded diagram.

[0034] Figure 8 It is a structural diagram of the side cover of the utility model.

[0035] Fig. 9 It is a front view of the push rod of the utility model.

[0036] In the figure: 1. shell frame; 11. sliding cavity; 12. track groove; 13. strip rib; 2. driving device; 21. driving motor; 22. worm; 23. double gear; 24. transmission gear; 241. positioning hole; 3. handle; 4. front rotating arm; 41. first pushing fitting part; 42. torsion spring; 5. rear pull rod; 51. second pushing fitting part; 52. tension spring; 6. push rod; 61. first pushing part; 62. second pushing part; 63. sliding part; 631. guide rib; 64. rotating connecting part; 7. transmission rod; 71. first end; 72. second end; 8. cam rocker arm; 81. rocker part; 82. power input shaft; 83. power output shaft; 9. side cover; 91. retaining rib. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the accompanying drawings.

[0038] A door handle with smooth transmission, such as Figure 1-Figure 3 and Figure 6-Figure 8As shown, it includes a shell frame 1 and a driving device 2, the shell frame 1 is provided with a handle 3, a front rotating arm 4 and a rear pull rod 5 movably connected to the two ends of the handle 3, and a push rod 6 is slidably provided on the shell frame 1, and the push rod 6 pushes and cooperates with the front rotating arm 4 and the rear pull rod 5; it also includes a transmission rod 7, the output end of the driving device 2 is connected with a cam rocker arm 8, the first end 71 of the transmission rod 7 is rotatably connected to the power output end of the cam rocker arm 8, and the second end 72 of the transmission rod 7 is rotatably connected to the push rod 6, the driving device 2 drives the push rod 6 to move along a straight line on the shell frame 1 through the cam rocker arm 8, and the push rod 6 pushes the front rotating arm 4 and the rear pull rod 5 to rotate, thereby driving the handle 3 to switch from a closed state to an open state. In this embodiment, the cam rocker arm 8 includes a rocker portion 81, a power input shaft 82 and a power output shaft 83 relatively arranged at both ends of the rocker portion 81, and a transmission gear 24 is provided with a positioning hole 241 corresponding to the power input shaft 82, the power input shaft 82 is positioned and locked with the positioning hole 241, and the power output shaft 83 is locked with the transmission gear 24. The first end 71 of the moving rod 7 is rotatably connected; a side cover 9 is buckled on the shell frame 1, and a sliding cavity 11 is formed between the side cover 9 and the shell frame 1. The side cover 9 is provided with retaining ribs 91 on both sides of the push rod 6. The two sides of the push rod 6 are guided and slidably matched with the retaining ribs 91 on the corresponding sides. The side cover 9 can prevent the push rod 6 from detaching from the shell frame 1. At the same time, the side cover 9 can also isolate the noise generated by the push rod 6 sliding on the shell frame 1 in the sliding cavity 11, thereby improving the noise reduction effect of the utility model; the driving device 2 includes a driving The motor 21, the worm 22 arranged at the output end of the driving motor 21, the double gear 23 meshing with the worm 22, the transmission gear 24 meshing with the output end of the double gear 23, and the cam rocker arm 8 connected to the output end of the transmission gear 24. The driving motor 21 drives the worm 22 to rotate forward or reverse, and in turn drives the cam rocker arm 8 to rotate forward or reverse through the double gear 23 and the transmission gear 24, thereby driving the push rod 6 to push in the forward direction of opening the handle 3 or move in the reverse direction of closing the handle 3 through the transmission rod 7.

[0039] like Figure 2-Figure 7 and Fig. 9As shown, the shell frame 1 is provided with a sliding cavity 11 along its length direction, and is connected to the track grooves 12 opened on both sides of the sliding cavity 11. The push rod 6 is slidably arranged in the sliding cavity 11. The push rod 6 is provided with sliding parts 63 constrained in the track grooves 12 on both sides. The sliding parts 63 are guided and slidably matched with the corresponding track grooves 12, so that the push rod 6 can only translate along the opening direction of the sliding cavity 11. At the same time, the limiting guiding effect between the sliding parts 63 on both sides of the push rod 6 and the track grooves 12 on the inner wall of the sliding cavity 11 can ensure The push rod 6 has a consistent sliding direction in the sliding cavity 11, and effectively prevents the push rod 6 from escaping from the sliding cavity 11; a set of sliding parts 63 are respectively arranged at the positions corresponding to the front rotating arm 4 and the rear pull rod 5 on both sides of the push rod 6, and a set of track grooves 12 are respectively arranged at the positions close to the front rotating arm 4 and the rear pull rod 5 of the shell frame 1, and multi-point guide cooperation is achieved between the front and rear sets of sliding parts 63 and the corresponding track grooves 12, so as to improve the stability of the sliding of the push rod 6 in the sliding cavity 11; the sliding parts 63 are symmetrically arranged It is placed on both sides of the push rod 6, and the sliding parts 63 on both sides are in the same plane; the side walls of the sliding part 63 are provided with a plurality of guide ribs 631, and the plurality of guide ribs 631 are arranged in parallel along the sliding direction of the push rod 6. The sliding part 63 slides with the inner wall of the track groove 12 through the guide ribs 631. The addition of the guide ribs 631 can reduce the effective contact area between the sliding part 63 and the inner wall of the track groove 12, thereby reducing the friction between the sliding part 63 and the track groove 12, thereby making the sliding of the sliding part 63 in the track groove 12 smoother; in this embodiment, the shell frame 1 is provided with a plurality of strip ribs 13 on both sides of the sliding cavity 11, and the plurality of strip ribs 13 are arranged in parallel along the length direction of the shell frame 1, and the track groove 12 constraining the corresponding sliding part 63 is formed between adjacent strip ribs 13. The strip ribs 13 on both sides can laterally limit the sliding part 63 in the track groove 12, so that the sliding direction of the sliding part 63 is consistent with the length direction of the track groove 12, thereby improving the stability of the movement of the push rod 6 in the sliding cavity 11.

[0040] like Figure 2 , Figure 6 , Figure 7 and Fig. 9As shown, a rotating connection portion 64 is provided at one end of the push rod 6 close to the driving device 2, and the rotating connection portion 64 is arranged on the center line of the push rod 6, and the second end 72 of the transmission rod 7 is rotatably connected to the rotating connection portion 64. A rotating connection portion 64 is provided at one end of the push rod 6 close to the driving device 2, and the rotating connection portion 64 is arranged on the center line of the push rod 6. The second end 72 of the transmission rod 7 is rotatably connected to the rotating connection portion 64. The rotating connection portion 64 is arranged on the center line of the push rod 6, so that the driving force given to the push rod 6 by the transmission rod 7 can be closer to the center position of the push rod 6, so that the thrust direction generated by the push rod 6 is more consistent; the front rotating arm 4 and the shell frame 1 A torsion spring 42 is arranged between the front rotating arm 4 and the cam rocker arm 8, and the torsion spring 42 has a tendency to drive the front rotating arm 4 to drive the handle 3 to reset to the closed state, and when the handle 3 is in the closed state, a first angle α is formed between the central axis M of the transmission rod 7 and the central axis L of the cam rocker arm 8, wherein the angle range of the first angle α is set between 30-50°. In this embodiment, when the handle 3 is in the closed state, the angle of the first angle α is 40°. When the driving device 2 drives the push rod 6 to reset, the torsion spring 42 can drive the front rotating arm 4 to automatically reset in the closing direction of the handle 3 by relying on its own accumulated elastic potential energy. When the handle 3 of the utility model is in the closed state, the central axis M of the transmission rod 7 is A first angle α is formed between the cam rocker arm 8 and the central axis L, so that the cam rocker arm 8 provides a larger instantaneous starting force component to the transmission rod 7, thereby improving the instantaneous starting force of the cam rocker arm 8 in the corresponding state, which is beneficial for the cam rocker arm 8 to provide a larger driving force at the moment of starting, and drives the transmission rod 7 to drive the push rod 6 to move, especially when the handle 3 is frozen by ice and snow, it can play an ice-breaking effect when the handle 3 is opened; the rear pull rod 5 is movably connected to the shell frame 1 through a rotating shaft, and a tension spring 52 is provided between the rotating shaft and the shell frame 1, and the tension spring 52 has a tendency to drive or drive the handle 3 to return to the closed state; the push rod 6 is provided with a first pushing portion 61 and a second pushing portion 62, the front rotating arm 4 is provided with a first pushing matching portion 41 corresponding to the first pushing portion 61, and the rear pull rod 5 is provided with a second pushing matching portion 51 corresponding to the second pushing portion 62, the push rod 6 is pushed and matched with the first pushing matching portion 41 and the second pushing matching portion 51 through the first pushing portion 61 and the second pushing portion 62. When the push rod 6 translates on the shell frame 1, the push rod 6 pushes the corresponding first pushing matching portion 41 and the second pushing matching portion 51 to move through the first pushing portion 61 and the second pushing portion 62, so that the front rotating arm 4 and the rear pull rod 5 are flipped outward relative to the shell frame 1, thereby driving the handle 3 to move from a closed state to an open state.

[0041] The basic working principle of the utility model is as follows: a sliding cavity 11 is provided in the length direction of the shell frame 1, and track grooves 12 are connected to and provided on both sides of the sliding cavity 11; a push rod 6 is slidably arranged in the sliding cavity 11; the sliding parts 63 on both sides of the push rod 6 are constrained in the track grooves 12 on the corresponding sides and the two are guided and slidably matched; when the driving device 2 drives the cam rocker arm 8 to rotate, the cam rocker arm 8 drives the push rod 6 to slide linearly only in a predetermined direction relative to the shell frame 1, and then the push rod 6 drives the front rotating arm 4 and the rear pull rod 5 to rotate, and finally the front rotating arm 4 and the rear pull rod 5 drive the handle 3 to switch from the closed state to the open state. The push rod 6 in the prior art lacks a limiting structure, which makes it easy for the push rod 6 to shake during the transmission process. In this solution, the sliding parts 63 on both sides of the push rod 6 are slidably arranged in the track grooves 12 corresponding to the shell frame 1. When When the driving device 2 drives the cam rocker arm 8 to rotate, the cam rocker arm 8 drives the push rod 6 to only make a linear motion along the length direction of the track groove 12 on the shell frame 1, and then the push rod 6 pushes the front rotating arm 4 and the rear pull rod 5 to rotate, and finally drives the handle 3 to switch from the closed state to the open state through the front rotating arm 4 and the rear pull rod 5. The utility model uses the track groove 12 of the shell frame 1 to laterally limit the sliding parts 63 on both sides of the push rod 6, so that the push rod 6 will not shake in its lateral direction when it is translated on the shell frame 1, thereby indirectly improving the operating stability of the handle 3 in the process of switching from the closed state to the open state, and at the same time, it can also reduce the mutual collision between components caused by the shaking of the push rod 6, thereby reducing the noise of the door handle during operation, which has the effect of reducing the noise of the door handle during operation and improving the smoothness of the door handle operation.

[0042] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A door handle with stable transmission, comprising a housing frame (1) and a driving device (2), wherein the housing frame (1) is provided with a handle (3), a front rotating arm (4) and a rear pull rod (5) movably connected to both ends of the handle (3), and characterized in that: A push rod (6) is slidably provided on the shell frame (1), and the push rod (6) is pushed and matched with the front rotating arm (4) and the rear pull rod (5); It also includes a transmission rod (7), the output end of the driving device (2) is connected to a cam rocker arm (8), the first end (71) of the transmission rod (7) is rotationally connected to the power output end of the cam rocker arm (8), and the second end (72) of the transmission rod (7) is rotationally connected to the push rod (6), the driving device (2) drives the push rod (6) to move in a straight line on the shell frame (1) through the cam rocker arm (8), and the push rod (6) pushes the front rotating arm (4) and the rear pull rod (5) to rotate in the direction of opening the handle (3).

2. A door handle with smooth transmission according to claim 1, characterized in that: The shell frame (1) is provided with a sliding cavity (11) and track grooves (12) connected to the sliding cavity (11) on both sides thereof along its length direction; the push rod (6) is slidably arranged in the sliding cavity (11); sliding parts (63) constrained in the track grooves (12) are provided on both sides of the push rod (6); the sliding parts (63) are slidingly matched with the corresponding track grooves (12) guides.

3. A door handle with smooth transmission according to claim 2, characterized in that: A set of sliding parts (63) are respectively provided on both sides of the push rod (6) at positions corresponding to the front rotating arm (4) and the rear pull rod (5), and a set of track grooves (12) are respectively provided at positions of the shell frame (1) close to the front rotating arm (4) and the rear pull rod (5).

4. A door handle with smooth transmission according to claim 2, characterized in that: The sliding parts (63) are symmetrically arranged on both sides of the push rod (6), and the sliding parts (63) on both sides are located on the same plane.

5. A door handle with smooth transmission according to claim 2, characterized in that: The side wall of the sliding portion (63) is provided with a plurality of guide ribs (631), and the plurality of guide ribs (631) are arranged in parallel along the sliding direction of the push rod (6). The sliding portion (63) is slidably matched with the inner wall of the track groove (12) through the guide ribs (631).

6. A door handle with smooth transmission according to claim 1, characterized in that: A rotating connection portion (64) is provided at one end of the push rod (6) close to the driving device (2), and the rotating connection portion (64) is arranged on the center line of the push rod (6), and the second end portion (72) of the transmission rod (7) is rotatably connected to the rotating connection portion (64).

7. A door handle with smooth transmission according to claim 1, characterized in that: A torsion spring (42) is provided between the front rotating arm (4) and the housing frame (1), and the torsion spring (42) has a tendency to drive the front rotating arm (4) to drive the handle (3) to return to a closed state, and when the handle (3) is in the closed state, a first angle α is formed between the central axis M of the transmission rod (7) and the central axis L of the cam rocker arm (8).

8. A door handle with smooth transmission according to claim 2, characterized in that: The shell frame (1) is provided with a plurality of strip ribs (13) on both sides of the sliding cavity (11), the plurality of strip ribs (13) are arranged in parallel along the length direction of the shell frame (1), and track grooves (12) for constraining the corresponding sliding parts (63) are formed between adjacent strip ribs (13).

9. A door handle with smooth transmission according to claim 2, characterized in that: A side cover (9) is fixedly connected to the shell frame (1), and the sliding cavity (11) is formed between the side cover (9) and the shell frame (1). The side cover (9) is provided with retaining ribs (91) on both sides corresponding to the push rod (6), and the two sides of the push rod (6) are guided and slidably matched with the retaining ribs (91) on the corresponding sides.

10. The vehicle door handle with stable transmission according to claim 1, characterized in that: The driving device (2) comprises a driving motor (21), a worm (22) arranged at the output end of the driving motor (21), a double gear (23) meshing with the worm (22), and a transmission gear (24) meshing with the output end of the double gear (23); the cam rocker arm (8) is connected to the output end of the transmission gear (24).

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