Search

CN-224213945-U - Door lock actuator

CN224213945UCN 224213945 UCN224213945 UCN 224213945UCN-224213945-U

Abstract

The utility model discloses a door lock actuator, which comprises a motor 1, an output transmission assembly 2 and a lock pin 3, wherein the motor 1 controls the lock pin 3 through the output transmission assembly 2 to realize locking and unlocking of a door lock, the output transmission assembly 2 comprises a worm 2.1, the worm 2.1 is in circumferential limit connection with an output shaft 1.1 of the motor 1, an adaptive adjusting plate 4 for adaptively adjusting a rotating state according to a transmission connection state of the worm is sleeved on the output shaft 1.1, a bearing chamber 1.2 for placing a bearing is arranged at an output end of the motor 1, the output shaft 1.1 is rotatably connected with an axis of the bearing chamber 1.2, and the adaptive adjusting plate 4 is arranged between the worm 2.1 and the bearing chamber 1.2. The utility model provides a door lock actuator which can reduce abrasion of a worm and ensure the service life of the worm.

Inventors

  • WANG RUILIN

Assignees

  • 宁波岚骐智能科技有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (10)

  1. 1. The door lock actuator is characterized by comprising a motor (1), an output transmission assembly (2) and a lock pin (3), wherein the motor (1) controls the lock pin (3) through the output transmission assembly (2) to lock and unlock the door lock, the output transmission assembly (2) comprises a worm (2.1), the worm (2.1) is circumferentially limited and connected to an output shaft (1.1) of the motor (1), an adaptive adjusting plate (4) for adaptively adjusting a rotating state according to a transmission connection state of the worm is sleeved on the output shaft (1.1), a bearing chamber (1.2) for placing a bearing is arranged at an output end of the motor (1), the output shaft (1.1) is rotatably connected to an axis of the bearing chamber (1.2), and the adaptive adjusting plate (4) is arranged between the worm (2.1) and the bearing chamber (1.2).
  2. 2. The door lock actuator according to claim 1, wherein the adaptive adjusting piece (4) is in clearance fit with the output shaft (1.1), and the minimum clearance of the clearance fit is not less than 0.05mm.
  3. 3. The door lock actuator according to claim 1, wherein a first adjusting gap (2.1.1) is arranged between one end of the worm (2.1) close to the motor (1) and the adaptive adjusting piece (4) in a standard driving state of the worm (2.1).
  4. 4. A door lock actuator according to claim 3, wherein the first adjustment gap (2.1.1) is not smaller than 0.05mm.
  5. 5. A door lock actuator according to claim 1, wherein the end of the worm (2.1) remote from the motor (1) is rotatably connected in a fixed housing (5).
  6. 6. The door lock actuator according to claim 5, wherein a second adjusting gap (2.1.2) is provided between one end of the worm (2.1) close to the fixed sleeve (5) and the fixed sleeve (5) in a standard driving state of the worm (2.1).
  7. 7. The door lock actuator according to claim 6, wherein the second adjustment gap (2.1.2) is not smaller than 0.05mm.
  8. 8. The door lock actuator according to claim 5, wherein the axis of the worm (2.1) is provided with a worm shaft (2.1.3), the worm (2.1) and the worm shaft (2.1.3) are integrally designed, and the diameter of the worm shaft (2.1.3) is not less than 1/2 of the diameter of the root circle of the worm (2.1).
  9. 9. The door lock actuator according to claim 8, wherein the worm shaft (2.1.3) and the output shaft (1.1) are connected in a circumferential limiting manner by adopting a D-shaped plug interface connection structure, and a chamfer (2.1.4) is arranged at one end of the worm shaft (2.1.3) inserted into the fixed sleeve (5).
  10. 10. The door lock actuator according to claim 1, wherein the output transmission assembly (2) further comprises a worm wheel (2.2) in transmission connection with the worm (2.1), the worm wheel (2.2) is rotatably connected to a worm wheel shaft (2.3), the worm wheel (2.2) comprises a worm wheel input tooth (2.2.1) in transmission connection with the worm (2.1), the output transmission assembly (2) further comprises a rack (3.1) in transmission connection with a side, far away from the worm (2.1), of the worm wheel (2.2), the rack (3.1) is arranged at one end of the lock pin (3), the worm wheel (2.2) is meshed with the rack (3.1) through a worm wheel output tooth (2.2.2), the root circle diameter of the worm wheel input tooth (2.2.1) is larger than the root circle diameter of the output tooth (2.2.2.2), and the diameter of the worm wheel shaft (2.3) is not smaller than 3/5 of the root circle diameter of the worm wheel output tooth (2.2.2).

Description

Door lock actuator Technical Field The utility model relates to the field of door locks, in particular to a door lock actuator. Background In the vehicle-mounted refrigerator door lock and the glove box door lock, a relatively conventional door lock control device utilizes a motor to carry out cooperation control with a worm gear transmission mechanism, but the motor drives a worm to rotate in a transmission mode of the worm gear transmission mechanism, and when one end of the worm, which is close to the motor, is propped against a bearing chamber for placing a bearing at the end part of the motor in the rotating process of the worm, the worm can be rubbed with the bearing chamber to cause abrasion, so that the long-time use of the worm is not facilitated. Disclosure of Invention The utility model aims to solve the technical problem of providing a door lock actuator which reduces abrasion of a worm and ensures the service life of the worm. The door lock actuator comprises a motor, an output transmission assembly and a lock pin, wherein the motor controls the lock pin through the output transmission assembly to lock and unlock the door lock, the output transmission assembly comprises a worm, the worm is in circumferential limit connection with an output shaft of the motor, an adaptive adjusting plate for adaptively adjusting a rotation state according to a transmission connection state of the worm is sleeved on the output shaft, a bearing chamber for placing a bearing is arranged at an output end of the motor, the output shaft is rotatably connected to an axis of the bearing chamber, and the adaptive adjusting plate is arranged between the worm and the bearing chamber. Compared with the prior art, the utility model has the advantages that the bearing chamber is a part of the motor structure, the motor is a standard part, the bearing chamber is mainly processed in a cutting-off surface processing mode, if the low roughness of the bearing chamber is ensured, the bearing chamber needs to be processed in an extra processing mode outside the standard part processing mode, and the extra processing technology is complex and high in cost, the surface of the bearing chamber under the condition of the motor standard part is rough and easy to generate burrs, the relative rotation occurs under the condition that the worm abuts against the bearing chamber, the friction phenomenon is easy to form between the worm and the bearing chamber, the friction force is larger, so that the abrasion of the worm is easy to be caused, the service life of the worm is influenced, the worm can move towards the direction of the self-adaptive regulating plate through the design of the self-adaptive regulating plate when the transmission of the worm wheel and the worm is connected too tightly, so that the self-adaptive regulating plate abuts against the worm forms a state, the self-adaptive regulating plate and the worm can rotate relatively in the rotating process, the self-adaptive regulating plate abuts against the bearing chamber and the motor is not in the rotating state, the friction coefficient is reduced when the self-adaptive regulating plate abuts against the worm by utilizing the self-adaptive regulating plate, the friction coefficient is reduced, the friction coefficient is not reduced when the self-adaptive regulating plate is connected with the worm through the worm, and the self-adaptive regulating plate is in the transmission state, and the friction coefficient is not in the friction coefficient, the grease can not be propped against the bearing chamber, and can freely rotate along with the output shaft under the viscosity of the grease, so that the grease can be prevented from being adhered to the bearing chamber for a long time, and is not easy to replace and detach. As an improvement of the utility model, the self-adaptive adjusting piece and the output shaft are in clearance fit, the minimum clearance of the clearance fit is not less than 0.05mm, through the improvement, a relatively independent rotating state is easily formed between the self-adaptive adjusting piece and the output shaft, namely, the output shaft rotates and does not necessarily drive the self-adaptive adjusting piece to rotate, a relatively resistance-free rotating state is formed between the output shaft and the self-adaptive adjusting piece, then in the process that the output shaft drives the worm to rotate, if the worm abuts against the self-adaptive adjusting piece, the self-adaptive adjusting piece abuts against the bearing chamber and is fixed on the end face of the bearing chamber, the self-adaptive adjusting piece does not rotate along with the rotation of the output shaft, and when the worm and the self-adaptive adjusting piece form the clearance, the self-adaptive adjusting piece follows the rotation of the output shaft due to the viscosity of grease, but does not synchronously rotate, so that the self-adaptive adjusting piece has higher degr