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CN-121973652-A - Large-torque actuator

CN121973652ACN 121973652 ACN121973652 ACN 121973652ACN-121973652-A

Abstract

The invention provides a large-torque actuator which comprises a shell, a driving motor, a gear transmission group and a circuit board group, wherein an accommodating cavity is formed in the shell. The driving motor is arranged in the accommodating cavity, the number of teeth of an output shaft gear is less than or equal to 5, the gear transmission group comprises a first duplex gear, a second duplex gear, a third duplex gear and an emergency unlocking gear, the first duplex gear is meshed with the output shaft gear to form a staggered shaft gear pair, the third duplex gear penetrates out of the shell to output torsion through multistage meshing transmission, the emergency unlocking gear penetrates out of the shell to be used for emergency operation, a pin part of the circuit board group is connected with the driving motor, a part of the circuit board group acquires transmission position signals, and the exposed end is abutted to a client circuit. The actuator has the advantages of large torque output and labor saving during emergency unlocking.

Inventors

  • YE XIAOHUI
  • LAI JIANBO
  • YU WEI

Assignees

  • 海拉（厦门）电气有限公司

Dates

Publication Date
20260505
Application Date
20260211

Claims (10)

  1. 1. A high torque actuator, comprising: a housing having a receiving chamber therein; the driving motor is arranged in the accommodating cavity and is provided with an output shaft gear, and the number of teeth of the output shaft gear is less than or equal to 5; the gear transmission set is arranged in the accommodating cavity and comprises a first duplex gear, a second duplex gear, a third duplex gear and an emergency unlocking gear, a first end gear of the first duplex gear is meshed with the output shaft gear to form a staggered shaft gear pair, a second end gear of the first duplex gear is meshed with one gear of the second duplex gear, the other gear of the second duplex gear is meshed with one gear of the third duplex gear, the other gear of the third duplex gear is meshed with the emergency unlocking gear, the third duplex gear is provided with an output transmission part penetrating out of the shell and used for outputting torsion, the emergency unlocking gear is provided with an operation part penetrating out of the shell and used for emergency unlocking operation, and The circuit board group is provided with a plurality of pins, a first end of each pin is positioned in the accommodating cavity, part of the first ends are electrically connected with the driving motor, part of the first ends are used for collecting and transmitting rotary position signals, and a second end of each pin is exposed out of the shell and is used for being connected with a client circuit.
  2. 2. The large torque actuator of claim 1 wherein said staggered axis gear pair is an intersecting axis bevel gear pair.
  3. 3. The large torsion actuator of claim 1, wherein the drive motor is disposed horizontally with respect to the bottom surface of the housing, and the first duplex gear, the second duplex gear, the third duplex gear, and the emergency release gear are disposed vertically with respect to the bottom surface of the housing.
  4. 4. The high torque actuator of claim 1 wherein the second end gear of the first tandem gear is a helical gear or a spur gear.
  5. 5. The high torque actuator of claim 1 wherein said second double gear, said third double gear or said emergency unlocking gear is a helical gear or a spur gear.
  6. 6. The high torque actuator of claim 1 wherein the diameter of the addendum circle of the first tandem gear is less than 19mm.
  7. 7. The high torque actuator of claim 1 wherein said emergency unlocking gear is equal in modulus to said third duplex gear engagement end and has a pitch circle diameter of less than 28mm.
  8. 8. The large torsion actuator of claim 1, wherein the rotational position signal is collected by a potentiometer, the potentiometer is disposed in the accommodating cavity, one end of the emergency unlocking gear is provided with a special-shaped shaft, and the special-shaped shaft is matched with a special-shaped hole of the potentiometer to drive the potentiometer to rotate so as to output the position signal.
  9. 9. The high torque actuator of claim 1, further comprising a first seal ring disposed at the junction of the third duplex gear and the housing, and a second seal ring disposed at the junction of the emergency release gear and the housing.
  10. 10. The high torque actuator of claim 1, wherein the housing comprises an upper housing and a lower housing, the upper housing being in welded connection with the lower housing, the upper housing being provided with a first through hole through which the emergency unlocking gear passes, the lower housing being provided with a second through hole through which the third duplex gear passes.

Description

Large-torque actuator Technical Field The invention relates to the technical field of new energy, in particular to a high-torque actuator. Background The charging gun lock actuator is a key component for guaranteeing charging safety of a new energy automobile and is used for realizing locking and unlocking functions of a charging gun and a charging port of a vehicle. In the prior art, the working mode of the charging gun lock actuator is generally to output rotary force, and one or two locking rods are driven by a conversion head to do telescopic motion, so that the core requirements of locking and unlocking are met. However, the existing charging gun lock actuator generally has the problem of insufficient output torque, and cannot meet the working condition requirement of driving the direct current and alternating current charging port locking rod at the same time, and a double-actuator scheme is adopted in the industry, so that the cost and the installation space are increased. Although the large torque output is realized by part of the executors, the operation force required by the emergency unlocking mechanism is large, and the operation requirement of allowing users to unlock manually under emergency conditions of women, old people and the like is difficult to meet. Therefore, there is a need for an actuator that combines high torque output and emergency unlocking effort saving features. Disclosure of Invention The invention aims to solve at least one of the technical problems in the prior art to a certain extent, namely the problem that the torque of an actuator is insufficient and the emergency unlocking operation is laborious. Therefore, the invention aims to provide a large-torque actuator which can ensure large torque output and simultaneously remarkably reduce the operation force required by emergency unlocking. In order to achieve the above object, the present invention provides a high torque actuator, comprising: a housing having a receiving chamber therein; the driving motor is arranged in the accommodating cavity and is provided with an output shaft gear, and the number of teeth of the output shaft gear is less than or equal to 5; the gear transmission set is arranged in the accommodating cavity and comprises a first duplex gear, a second duplex gear, a third duplex gear and an emergency unlocking gear, a first end gear of the first duplex gear is meshed with the output shaft gear to form a staggered shaft gear pair, a second end gear of the first duplex gear is meshed with one gear of the second duplex gear, the other gear of the second duplex gear is meshed with one gear of the third duplex gear, the other gear of the third duplex gear is meshed with the emergency unlocking gear, the third duplex gear is provided with an output transmission part penetrating out of the shell and used for outputting torsion, the emergency unlocking gear is provided with an operation part penetrating out of the shell and used for emergency unlocking operation, and The circuit board group is provided with a plurality of pins, a first end of each pin is positioned in the accommodating cavity, part of the first ends are electrically connected with the driving motor, part of the first ends are used for collecting and transmitting rotary position signals, and a second end of each pin is exposed out of the shell and is used for being connected with a client circuit. According to the large-torque actuator provided by the invention, aiming at the defects of insufficient torque of the charging gun lock actuator, high cost and space occupation of a double-actuator scheme and labor-consuming emergency unlocking operation of part of large-torque actuators, a multi-stage transmission structure formed by combining a plurality of groups of double gears and emergency unlocking gears is combined by adopting an output shaft gear with the number of teeth less than or equal to 5, and the output shaft gear and the first double gears form a staggered shaft gear pair, so that the transmission ratio is greatly improved, the large-torque output of more than or equal to 1.7N/m is realized, the locking rods of the direct current and alternating current charging ports of a trolley can be simultaneously driven to stretch and retract, the use cost is effectively reduced and the installation space is saved without additionally arranging an actuator, meanwhile, the emergency unlocking operation is more labor-saving by optimizing the gear transmission layout design, the manual unlocking requirements of women, old people and the like under emergency conditions are met, the convenience of the large-torque output and the emergency unlocking is comprehensively ensured, and the charging safety of a new energy automobile is ensured. In addition, the exposed pins of the circuit board group are directly abutted to the client circuit, so that an extra wire harness is omitted, the installation process is simplified, and the rotation position signal acq