Actuator and vehicle door
By using damping washers and buffer springs in the actuator, the mechanical noise problem of the door handle during unlocking and locking is solved, improving the user's door opening and closing experience.
Patent Information
- Application Number
- CN202511237977.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-01
- Publication Date
- 2025-11-18
AI Technical Summary
The actuators in existing car door handles generate significant mechanical noise when unlocking and locking the doors, resulting in a poor user experience when opening and closing the doors.
The design incorporates damping washers and buffer springs. The damping washers are fitted onto the outside of the push rod to reduce vibration, while the buffer springs support the outward-opening handle assembly, reducing noise during push rod movement.
By combining damping washers and buffer springs, the mechanical noise of the actuator when unlocking and locking the door is significantly reduced, improving the user's door opening and closing experience.
Smart Images
Figure CN120968345A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive technology, and in particular to an actuator and a car door. Background Technology
[0002] Currently, the actuator in the exterior door handle is used to control the door's unlocking and unlocking functions, helping users to conveniently open or close the door. Specifically, the actuator is usually equipped with mechanical structures such as a motor, gears, and push rods. When the door is locked, the owner presses the remote unlock button or touches the sensor on the exterior door handle. The vehicle's central control system receives the signal and transmits the unlock command to the actuator. The motor inside the actuator drives the gears and push rods in sequence to push the lock cylinder, thus unlocking the door. When the door needs to be locked, the motor inside the actuator drives the gears and push rods in sequence to drive the lock cylinder in the opposite direction, returning it to the locked position, thus locking the door.
[0003] In summary, the actuator is an important component of the exterior door handle. However, due to the relatively rigid mechanical transmission structure of the actuator in a typical exterior door handle, it generates significant mechanical noise when the user unlocks and locks the door, resulting in a poor user experience when opening and closing the door. Summary of the Invention
[0004] The purpose of this invention is to provide an actuator and a car door to solve the technical problem that the actuator in a typical car door handle generates a lot of mechanical noise when unlocking and locking the car door, resulting in a poor user experience when opening and closing the door.
[0005] To achieve the above objectives, the present invention provides an actuator, including a housing, a push rod, a driver, a damping washer, and a buffer spring. The housing has a receiving cavity, and the outer surface of the housing has an opening extending into the receiving cavity. The driver and the push rod are disposed in the receiving cavity, with the push rod corresponding to the opening. The driver is throttle connected to the push rod, and the driver is used to drive the push rod to move to a first position and a second position. When the push rod is in the first position, the push rod passes through the opening, one end of the push rod is outside the housing, and the end protrudes beyond the outer surface of the housing by a first distance; When the push rod is in the second position, the push rod passes through the opening, one end of the push rod is outside the housing and protrudes beyond the outer surface of the housing by a second distance, or the push rod is completely retracted into the receiving cavity; The first distance is greater than the second distance; The damping washer is disposed inside the receiving cavity and is sleeved on the outside of the push rod; When the push rod moves between the first position and the second position, the inner side of the damping washer abuts against the outer side of the push rod to reduce the vibration of the push rod; The buffer spring is located on the outer surface of the housing corresponding to the opening. One end of the buffer spring abuts against the outer surface of the housing, and the other end abuts against the outward-opening handle assembly.
[0006] Optionally, the receiving cavity includes a rod cavity, the opening is provided corresponding to the rod cavity, the push rod is disposed in the rod cavity, the push rod is slidably connected to the rod cavity along its axial direction, the rod cavity is provided with a receiving groove around the push rod, and the damping washer is disposed in the receiving groove.
[0007] Optionally, it also includes a transmission assembly. The receiving cavity includes a drive cavity, a transmission cavity, and a rod cavity that are connected in sequence. The drive cavity is located on one side of the rod cavity along a first direction, the transmission cavity is located on one side of the drive cavity and the rod cavity along a second direction, the driver is located in the drive cavity, the transmission assembly is located in the transmission cavity, and the push rod is located in the rod cavity. The driver, the transmission assembly, and the push rod are sequentially connected in a transmission manner.
[0008] Optionally, the transmission cavity includes a first wheel cavity and a second wheel cavity that are interconnected. The first wheel cavity is connected to the drive cavity, and the second wheel cavity is connected to the rod cavity. The transmission assembly includes a first transmission wheel and a second transmission wheel arranged sequentially along a first direction. The first transmission wheel is disposed in the first wheel cavity, and the second transmission wheel is disposed in the second wheel cavity. The first transmission wheel and the second transmission wheel are connected in a transmission manner.
[0009] Optionally, it may also include a first drive shaft and a second drive shaft, and the receiving cavity may further include a first connecting hole and a second connecting hole; The first connecting hole extends from the transmission cavity to the first wheel cavity, the first transmission wheel is fixedly sleeved on the first transmission shaft, and one end of the first transmission shaft is connected to the driver. The second connecting hole extends from the rod cavity to the second wheel cavity, the second transmission wheel is fixedly sleeved on the second transmission shaft, and one end of the second transmission shaft is connected to the push rod.
[0010] Optionally, it may also include a first limiting block and a second limiting block, and the receiving cavity may also include a first limiting groove and a second limiting groove; The first limiting groove is located on the side of the first wheel cavity away from the first connecting hole and relative to the second direction. The first limiting block is fixedly located in the first limiting groove. The side of the first limiting block facing the first connecting hole is provided with a first limiting hole. The first limiting hole is provided corresponding to the first connecting hole. A first bearing is fixedly located in the first limiting hole. The end of the first drive shaft away from the driver is engaged with the inner ring of the first bearing. The second limiting groove is located on the side of the second wheel cavity away from the second connecting hole and relative to the second direction. The second limiting block is fixedly located in the second limiting groove. The side of the second limiting block facing the second connecting hole is provided with a second limiting hole. The second limiting hole is provided corresponding to the second connecting hole. A second bearing is fixedly located in the second limiting hole.
[0011] Optionally, the first drive wheel and the second drive wheel are made of copper, and the first drive shaft and the second drive shaft are made of plastic.
[0012] Optionally, it also includes a rotating block, wherein the rotating block and the push rod are sequentially arranged in the rod cavity from near the second transmission wheel to away from the second transmission wheel. The rotating block is rotatably connected to the rod cavity and is drively connected to the second transmission wheel. One of the rotating block and the push rod is provided with a connecting screw and the other is provided with a corresponding connecting thread. The connecting screw and the connecting thread are connected. The rotating block rotates along its axial direction to move the push rod along its axial direction.
[0013] Optionally, it may also include a plurality of first buffer pads and a plurality of second buffer pads, wherein the plurality of first buffer pads are fixedly disposed on the outer surface of the housing, the first buffer pads are used to abut against the mounting base, and the plurality of second buffer pads are disposed between the driver and the receiving cavity.
[0014] The present invention also relates to a vehicle door, including an outward opening handle assembly, a mounting base and the aforementioned actuator, wherein the actuator is fixedly disposed on the mounting base and one end of the push rod abuts against the outward opening handle assembly.
[0015] Compared with the prior art, the actuator and car door of this invention have the following advantages: In the actuator of the present invention, the driver and the push rod are disposed within the receiving cavity of the housing, and the push rod is arranged corresponding to the opening of the housing. The driver is connected to the push rod to drive the push rod to move to a first position and a second position. When the push rod is in the first position, one end of the push rod is outside the housing, and the distance between this end and the outer surface of the housing is relatively large. When the push rod is in the second position, one end of the push rod can be outside the housing, and the distance between this end and the outer surface of the housing is smaller. The push rod can also be completely within the receiving cavity. Specifically, when the push rod moves from the second position to the first position, the push rod extends outward, and one end pushes the outward-opening handle assembly outward. When the push rod moves from the first position to the second position, the push rod retracts into the receiving cavity, and the outward-opening handle assembly abuts against the push rod and moves towards the housing. Additionally, a damping washer is disposed within the receiving cavity and sleeved on the outside of the push rod. When the push rod reciprocates between the first and second positions... The inner side of the damping washer abuts against the outer wall of the push rod and rubs against the outer wall of the push rod to reduce vibration during operation and buffer the push rod, making the push rod move more smoothly and thus reducing the noise it emits. In addition, the buffer spring has a corresponding opening on its outer surface. When the push rod is pushed outward, it passes through the inner ring of the buffer spring and abuts against the outward opening handle assembly. When the push rod is retracted inward, the buffer spring abuts against the outward opening handle assembly and uses its elasticity to support the outward opening handle assembly, reducing the load on the push rod from the outward opening handle assembly and the degree of axial runout when the push rod retracts, making the retraction movement of the push rod smoother and thus reducing the noise it emits. In summary, the actuator of the present invention reduces the noise emitted when the push rod moves by using damping washers and buffer springs, thereby reducing the mechanical noise generated by the actuator when unlocking and locking the door, and improving the user's door opening and closing experience. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of the actuator of the present invention.
[0017] Figure 2 This is a rear view of the actuator of the present invention.
[0018] Figure 3 This is a schematic diagram of the structure of the actuator of the present invention connected to the outward-opening handle assembly (the push rod is in the second position).
[0019] Figure 4 This is a schematic diagram of the actuator of the present invention connected to the outward-opening handle assembly (the push rod is in the first position).
[0020] Figure 5 This is a cross-sectional view of the actuator of the present invention when it is installed on the mounting base, cut along a plane perpendicular to the second direction.
[0021] Figure 6 This is a cross-sectional view of the actuator of the present invention when it is installed on the mounting base, cut along a plane perpendicular to the first direction.
[0022] Reference numerals: 1. Housing; 2. Push rod; 3. Driver; 4. Damping washer; 5. Buffer spring; 6. Transmission assembly; 61. First transmission wheel; 62. Second transmission wheel; 7. First transmission shaft; 8. Second transmission shaft; 9. First limit block; 10. Second limit block; 20. Rotating block; 30. First buffer pad; 40. Second buffer pad; 50. Mounting base; 60. Outward-opening handle assembly. Detailed Implementation
[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
[0024] In the description of this invention, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] like Figures 1 to 6As shown, an actuator of the present invention includes a housing 1, a push rod 2, a driver 3, a damping washer 4, and a buffer spring 5. The housing 1 has a receiving cavity, and its outer surface has an opening extending into the receiving cavity. The driver 3 and the push rod 2 are disposed within the receiving cavity. The push rod 2 is positioned corresponding to the opening. The driver 3 is throttle-connected to the push rod 2 and is used to drive the push rod 2 to move to a first position and a second position. When the push rod 2 is in the first position, it passes through the opening, with one end of the push rod 2 outside the housing 1 and protruding beyond the outer surface of the housing 1 by a first distance. When the push rod 2 is in the second position... When in position, the push rod 2 passes through the opening, one end of the push rod 2 is outside the housing 1 and protrudes beyond the outer surface of the housing 1 by a second distance, or the push rod 2 is completely retracted into the receiving cavity; the first distance is greater than the second distance; the damping washer 4 is disposed in the receiving cavity and is sleeved on the outside of the push rod 2; when the push rod 2 moves between the first position and the second position, the inner side of the damping washer 4 abuts against the outer side of the push rod 2 to reduce the vibration of the push rod 2; the buffer spring 5 is disposed on the outer surface of the housing 1 corresponding to the opening, one end of the buffer spring 5 abuts against the outer surface of the housing 1 and the other end is used to abut against the outward opening handle assembly 60.
[0027] In the above technical solution, when the push rod 2 is in the first position, one end of the push rod 2 is outside the housing 1, and the distance between this end and the outer surface of the housing 1 is relatively large. When the push rod 2 is in the second position, one end of the push rod 2 can be outside the housing 1, and the distance between this end and the outer surface of the housing 1 is relatively small. The push rod 2 can also be completely inside the receiving cavity. Specifically, when the push rod 2 moves from the second position to the first position, the push rod 2 extends outward, and one end pushes the outward opening handle assembly 60 outward. When the push rod 2 moves from the first position to the second position, the push rod 2 retracts into the receiving cavity, and the outward opening handle assembly 60 abuts against the push rod 2 and moves closer to the housing 1. In addition, the damping washer 4 is disposed inside the receiving cavity and sleeved on the outside of the push rod 2. When the push rod 2 reciprocates between the first position and the second position, the inner side of the damping washer 4 abuts against the outer wall of the push rod 2 and rubs against the outer wall of the push rod 2. To reduce vibration during the operation of push rod 2 and to buffer push rod 2, making push rod 2 move more smoothly and thus reducing its noise, the damping spring 5 has an opening on its outer surface. When push rod 2 is pushed outward, push rod 2 passes through the inner ring of damping spring 5 and abuts against the outward opening handle assembly 60. When push rod 2 is retracted, damping spring 5 abuts against the outward opening handle assembly 60, using its elasticity to support the outward opening handle assembly 60, reducing the load of the outward opening handle assembly 60 on push rod 2 and the degree of shaft runout when push rod 2 retracts, making the retraction movement of push rod 2 smoother and thus reducing its noise. In summary, the actuator of the present invention reduces the noise generated when push rod 2 moves by using damping washer 4 and damping spring 5, thereby reducing the mechanical noise generated by the actuator when unlocking and locking the door, and improving the user's door opening and closing experience.
[0028] Furthermore, the driver 3 can be a motor.
[0029] Furthermore, the receiving cavity includes a rod cavity, the opening is provided corresponding to the rod cavity, the push rod 2 is disposed in the rod cavity, the push rod 2 is slidably connected to the rod cavity along its axial direction, the rod cavity is provided with a receiving groove around the push rod 2, and the damping washer 4 is disposed in the receiving groove; to facilitate the installation of the damping washer 4 in the receiving groove and to make the damping washer 4 fit on the outside of the push rod 2, wherein, when the push rod 2 moves along its axial direction, the inner surface of the push rod 2 and the inner surface of the damping washer 4 rub against each other, and the damping washer 4... One end face of the damping washer 4 abuts against the wall of the receiving groove to prevent the damping washer 4 from moving with the push rod 2. Furthermore, when the width of the two side walls of the receiving groove is not greater than the width of the damping washer 4, the two side walls of the receiving groove abut against the two end faces of the damping washer 4 respectively. When the width of the two side walls of the receiving groove is greater than the width of the damping washer 4, when the push rod 2 moves, one side wall of the receiving groove abuts against one end face of the damping washer 4. Furthermore, the damping washer 4 can be made of rubber.
[0030] Furthermore, it also includes a transmission assembly 6. The receiving cavity includes a drive cavity, a transmission cavity, and a rod cavity that are connected in sequence. The drive cavity is located on one side of the rod cavity along a first direction, and the transmission cavity is located on one side of the drive cavity and the rod cavity along a second direction. The driver 3 is located in the drive cavity, the transmission assembly 6 is located in the transmission cavity, and the push rod 2 is located in the rod cavity. The driver 3, the transmission assembly 6, and the push rod 2 are sequentially connected in a transmission manner to make the actuator layout more compact. There is an angle between the first direction and the second direction.
[0031] Furthermore, the transmission cavity includes a first wheel cavity and a second wheel cavity that are interconnected. The first wheel cavity is connected to the drive cavity, and the second wheel cavity is connected to the rod cavity. The transmission assembly 6 includes a first transmission wheel 61 and a second transmission wheel 62 arranged sequentially along a first direction. The first transmission wheel 61 is disposed in the first wheel cavity, and the second transmission wheel 62 is disposed in the second wheel cavity. The first transmission wheel 61 and the second transmission wheel 62 are connected in a driving manner. The first transmission wheel 61 and the second transmission wheel 62 can be directly meshed and connected in a driving manner. In this case, the first transmission wheel 61 and the second transmission wheel 62 are preferably helical gears. In addition, the transmission assembly 6 may also include a third transmission wheel and a fourth transmission wheel. The third transmission wheel is disposed below the first transmission wheel 61 and is connected in a driving manner to the first transmission wheel 61. The fourth transmission wheel is disposed below the second transmission wheel 62. The first transmission wheel 61 and the third transmission wheel are worm gears, and the second transmission wheel 62 and the fourth transmission wheel are worm wheels to increase the self-locking property and the smoothness of operation of the equipment.
[0032] Furthermore, it also includes a first drive shaft 7 and a second drive shaft 8, and the receiving cavity further includes a first connecting hole and a second connecting hole; the first connecting hole extends from the drive cavity to the first wheel cavity, the first drive wheel 61 is fixedly sleeved on the first drive shaft 7, and one end of the first drive shaft 7 is drive-connected to the driver 3; the second connecting hole extends from the rod cavity to the second wheel cavity, the second drive wheel 62 is fixedly sleeved on the second drive shaft 8, and one end of the second drive shaft 8 is drive-connected to the push rod 2; wherein, the driver 3 sequentially drives the first drive shaft 7, the first drive wheel, the second rotating wheel, the second drive rod, and the push rod 2.
[0033] Furthermore, it also includes a first limiting block 9 and a second limiting block 10. The receiving cavity further includes a first limiting groove and a second limiting groove. The first limiting groove is located on the side of the first wheel cavity away from the first connecting hole and relative to the second direction. The first limiting block 9 is fixedly located in the first limiting groove. The side of the first limiting block 9 facing the first connecting hole has a first limiting hole, which corresponds to the first connecting hole. A first bearing is fixedly located in the first limiting hole. The end of the first drive shaft 7 away from the driver 3 is engaged with the inner ring of the first bearing. The second limiting groove is located in... On the side of the second wheel cavity away from the second connecting hole and relative to the second direction, the second limiting block 10 is fixedly disposed in the second limiting groove. The side of the second limiting block 10 facing the second connecting hole is provided with a second limiting hole, which is set corresponding to the second connecting hole. A second bearing is fixedly disposed in the second limiting hole. In this way, by reducing the gap between the drive shaft and the bearing, the drive shaft can be engaged with the inner ring of the bearing. When the drive shaft axially runs, the inner ring has a certain axial friction force on it, so as to reduce the axial runout of the bearing, thereby making the drive shaft run more smoothly and reducing noise.
[0034] Furthermore, the first transmission wheel 61 and the second transmission wheel 62 are made of copper, and the first transmission shaft 7 and the second transmission shaft 8 are made of plastic, in order to reduce the noise generated when the shafts and wheels are driven together.
[0035] Furthermore, it also includes a rotating block 20. The rotating block 20 and the push rod 2 are sequentially arranged in the rod cavity from near the second transmission wheel 62 to away from the second transmission wheel 62. The rotating block 20 is rotatably connected to the rod cavity and is drively connected to the second transmission wheel 62. One of the rotating block 20 and the push rod 2 is provided with a connecting screw, and the other is provided with a corresponding connecting thread. The connecting screw and the connecting thread are connected. The rotating block 20 rotates along its axial direction to make the push rod 2 move along its axial direction. Pushing and pulling the push rod 2 by means of a thread has the advantage of smooth operation. A guide rail and slider structure can be provided between the push rod 2 and the rod cavity to prevent the push rod 2 from rotating during movement, thereby affecting the accuracy of movement.
[0036] Furthermore, it also includes a plurality of first buffer pads 30 and a plurality of second buffer pads 40. The plurality of first buffer pads 30 are fixedly disposed on the outer surface of the housing 1. The first buffer pads 30 are used to abut against the mounting base 50 to reduce the vibration transmitted by the actuator to other parts on the door, thereby reducing the noise generated when the vibration is transmitted to the sheet metal parts of the door. The plurality of second buffer pads 40 are disposed between the driver 3 and the receiving cavity to reduce the vibration transmitted by the driver 3 to the housing 1, thereby reducing the noise caused by the vibration of the housing 1. The buffer pads can be made of rubber and can be disc-shaped.
[0037] Furthermore, the housing 1 includes a first housing and a second housing, which are detachably connected, and form a receiving cavity and an opening between the first housing and the second housing.
[0038] The present invention also relates to a vehicle door, including an outward opening handle assembly 60, a mounting base 50 and the aforementioned actuator, wherein the actuator is fixedly disposed on the mounting base 50, and one end of the push rod 2 abuts against the outward opening handle assembly 60.
[0039] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit connection.
[0040] Furthermore, detachable connection and detachable setting refer to the ability of two components to be repeatedly assembled and disassembled without damage or severe deformation, including but not limited to fixing by connectors or fixing by snap-fit connections.
[0041] Furthermore, sliding connection and sliding setting refer to the connection between two connected components, where one component can slide along a fixed trajectory on the other component, including but not limited to connection by sliding a slider into a groove, or connection by inserting a slider into a hole whose size and profile match the slider.
[0042] Furthermore, adjustable connection and adjustable setting refer to the fact that the two connected components can be adjusted in their relative positions before being fixed, and the aforementioned adjustment and fixing process can be repeated, including but not limited to connection through elongated holes and connectors, and connection through sliding connection plus detachable connection.
[0043] Furthermore, rotatable connection and rotatable setting refer to the ability of two connected components to rotate, including but not limited to connections via bearings or clearance fits.
[0044] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.
[0045] In summary, the embodiments of the present invention provide an actuator and a vehicle door, the technical effects of which are as follows: In the actuator of the present invention, the driver 3 and the push rod 2 are disposed within the receiving cavity of the housing 1, and the push rod 2 is disposed corresponding to the opening of the housing 1. The driver 3 is connected to the push rod 2 to drive the push rod 2 to move to a first position and a second position. When the push rod 2 is in the first position, one end of the push rod 2 is outside the housing 1, and the distance between this end and the outer surface of the housing 1 is relatively large. When the push rod 2 is in the second position, one end of the push rod 2 can be outside the housing 1, and the distance between this end and the outer surface of the housing 1 is relatively small. The push rod 2 can also be completely located within the receiving cavity. Specifically, when the push rod 2 moves from the second position to the first position, the push rod 2 extends outward, and one end pushes the outward opening handle assembly 60 outward. When the push rod 2 moves from the first position to the second position, the push rod 2 retracts into the receiving cavity, and the outward opening handle assembly 60 abuts against the push rod 2 and moves closer to the housing 1. In addition, the damping washer 4 is disposed within the receiving cavity and sleeved on the outside of the push rod 2. When the push rod 2 reciprocates between the first position and the second position... The inner side of the damping washer 4 abuts against the outer wall of the push rod 2 and rubs against the outer wall of the push rod 2 to reduce the vibration of the push rod 2 during operation and to buffer the push rod 2, making the push rod 2 move more smoothly and thus reducing the noise it emits. In addition, the buffer spring 5 has a corresponding opening on its outer surface. When the push rod 2 is pushed outward, the push rod 2 passes through the inner ring of the buffer spring 5 and abuts against the outward opening handle assembly 60. When the push rod 2 is retracted, the buffer spring 5 abuts against the outward opening handle assembly 60 and uses its elasticity to support the outward opening handle assembly 60, reducing the load of the outward opening handle assembly 60 on the push rod 2 and the degree of shaft runout when the push rod 2 retracts, making the retraction movement of the push rod 2 smoother and thus reducing the noise it emits. In summary, the actuator of the present invention reduces the noise emitted by the push rod 2 when it moves by using the damping washer 4 and the buffer spring 5, thereby reducing the mechanical noise generated by the actuator when unlocking and locking the door, and improving the user's door opening and closing experience.
[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.
Claims
1. An actuator, characterized in that, The device includes a housing (1), a push rod (2), a driver (3), a damping washer (4), and a buffer spring (5). The housing (1) has a receiving cavity, and the outer surface of the housing (1) has an opening that extends through the receiving cavity. The driver (3) and the push rod (2) are located in the receiving cavity. The push rod (2) is positioned corresponding to the opening. The driver (3) is connected to the push rod (2) and is used to drive the push rod (2) to move to a first position and a second position. When the push rod (2) is in the first position, the push rod (2) passes through the opening, one end of the push rod (2) is outside the housing (1), and the end protrudes from the outer surface of the housing (1) by a first distance; When the push rod (2) is in the second position, the push rod (2) passes through the opening, one end of the push rod (2) is outside the housing (1) and protrudes beyond the outer surface of the housing (1) by a second distance, or the push rod (2) is completely housed in the receiving cavity; The first distance is greater than the second distance; The damping washer (4) is located inside the receiving cavity and is sleeved on the outside of the push rod (2); When the push rod (2) moves between the first position and the second position, the inner side of the damping washer (4) abuts against the outer side of the push rod (2) to reduce the vibration of the push rod (2); The buffer spring (5) is located on the outer surface of the housing (1) corresponding to the opening. One end of the buffer spring (5) abuts against the outer surface of the housing (1), and the other end abuts against the outward-opening handle assembly (60).
2. The actuator according to claim 1, characterized in that, The receiving cavity includes a rod cavity, the opening is provided corresponding to the rod cavity, the push rod (2) is provided in the rod cavity, the push rod (2) is slidably connected to the rod cavity along its axial direction, the rod cavity is provided with a receiving groove around the push rod (2), and the damping washer (4) is provided in the receiving groove.
3. The actuator according to claim 1, characterized in that, It also includes a transmission assembly (6). The receiving cavity includes a drive cavity, a transmission cavity and a rod cavity that are connected in sequence. The drive cavity is located on one side of the rod cavity along a first direction. The transmission cavity is located on one side of the drive cavity and the rod cavity along a second direction. The driver (3) is located in the drive cavity. The transmission assembly (6) is located in the transmission cavity. The push rod (2) is located in the rod cavity. The driver (3), the transmission assembly (6) and the push rod (2) are connected in sequence for transmission.
4. The actuator according to claim 3, characterized in that, The transmission cavity includes a first wheel cavity and a second wheel cavity that are interconnected. The first wheel cavity is connected to the drive cavity, and the second wheel cavity is connected to the rod cavity. The transmission assembly (6) includes a first transmission wheel (61) and a second transmission wheel (62) arranged sequentially along a first direction. The first transmission wheel (61) is located in the first wheel cavity, and the second transmission wheel (62) is located in the second wheel cavity. The first transmission wheel (61) and the second transmission wheel (62) are connected in a transmission manner.
5. The actuator according to claim 4, characterized in that, It also includes a first drive shaft (7) and a second drive shaft (8), and the receiving cavity further includes a first connecting hole and a second connecting hole; The first connecting hole extends from the transmission cavity to the first wheel cavity. The first transmission wheel (61) is fixedly sleeved on the first transmission shaft (7). One end of the first transmission shaft (7) is connected to the driver (3). The second connecting hole extends from the rod cavity to the second wheel cavity. The second transmission wheel (62) is fixedly sleeved on the second transmission shaft (8). One end of the second transmission shaft (8) is connected to the push rod (2).
6. The actuator according to claim 5, characterized in that, It also includes a first limiting block (9) and a second limiting block (10), and the receiving cavity also includes a first limiting groove and a second limiting groove; The first limiting groove is located on the side of the first wheel cavity away from the first connecting hole and relative to the second direction. The first limiting block (9) is fixedly located in the first limiting groove. The side of the first limiting block (9) facing the first connecting hole is provided with a first limiting hole. The first limiting hole is set corresponding to the first connecting hole. A first bearing is fixedly located in the first limiting hole. The end of the first drive shaft (7) away from the driver (3) is engaged with the inner ring of the first bearing. The second limiting groove is located on the side of the second wheel cavity away from the second connecting hole and relative to the second direction. The second limiting block (10) is fixedly located in the second limiting groove. The side of the second limiting block (10) facing the second connecting hole is provided with a second limiting hole. The second limiting hole is set corresponding to the second connecting hole. A second bearing is fixedly located in the second limiting hole.
7. The actuator according to claim 5, characterized in that, The first drive wheel (61) and the second drive wheel (62) are made of copper, and the first drive shaft (7) and the second drive shaft (8) are made of plastic.
8. The actuator according to claim 4, characterized in that, It also includes a rotating block (20), the rotating block (20) and the push rod (2) are arranged sequentially in the rod cavity from the direction close to the second transmission wheel (62) to the direction away from the second transmission wheel (62), the rotating block (20) is rotatably connected to the rod cavity, the rotating block (20) is drively connected to the second transmission wheel (62), one of the rotating block (20) and the push rod (2) is provided with a connecting screw and the other is provided with a corresponding connecting thread, the connecting screw and the connecting thread are connected, the rotating block (20) rotates along its axial direction so that the push rod (2) moves along its axial direction.
9. The actuator according to claim 1, characterized in that, It also includes a plurality of first buffer pads (30) and a plurality of second buffer pads (40), the plurality of first buffer pads (30) being fixedly disposed on the outer surface of the housing (1), the first buffer pads (30) being used to abut against the mounting base (50), and the plurality of second buffer pads (40) being disposed between the driver (3) and the receiving cavity.
10. A vehicle door, characterized in that, The device includes an outward-opening handle assembly (60), a mounting base (50), and an actuator as described in any one of claims 1 to 9, wherein the actuator is fixedly mounted on the mounting base (50), and one end of the push rod (2) abuts against the outward-opening handle assembly (60).