Search

CN-224229132-U - Damping type clutch structure

CN224229132UCN 224229132 UCN224229132 UCN 224229132UCN-224229132-U

Abstract

The utility model discloses a transmission assembly with a damping type clutch structure, which comprises a transmission shaft, wherein a rotary transmission part capable of rotating relative to the transmission shaft in the axial direction is connected to the transmission shaft, a clutch part positioned at one side of the rotary transmission part is also connected to the transmission shaft, and the clutch part is connected to the transmission shaft in a sliding way along the axial direction and can rotate along with the transmission shaft, so that the clutch part can be abutted against or separated from the rotary transmission part in the axial direction, a pretightening force elastic element capable of providing pretightening force to push the clutch part to be abutted against the rotary transmission part is also arranged between the transmission shaft and the clutch part, and a clutch structure capable of enabling the clutch part to be abutted against and transmitted when the torque of the rotary transmission part and the clutch part is smaller than a preset value and enabling the clutch part to be separated from the clutch part when the torque of the rotary transmission part is larger than the preset value is arranged between the rotary transmission part and the clutch part.

Inventors

  • Zhu Shupin

Assignees

  • 中山市粤为科技有限公司

Dates

Publication Date
20260512
Application Date
20250611

Claims (10)

  1. 1. The damping clutch structure is characterized by comprising a shaft (1), wherein a first limiting part (11) and a second limiting part (12) are arranged on the shaft (1), a rotating part (2) and a clutch part (3) are connected between the first limiting part (11) and the second limiting part (12) of the shaft (1), the rotating part (2) is connected to the shaft (1) in a circumferential rotation mode, the clutch part (3) is connected to the shaft (1) in a sliding mode along the axial direction and can rotate along with the shaft (1), the rotating part (2) and the clutch part (3) are mutually attached, a tooth groove (21) is formed in one side face, facing the clutch part (3), of the rotating part (2), of the clutch part (3) is provided with a convex tooth (31) inserted into the tooth groove (21).
  2. 2. The damping clutch structure according to claim 1, wherein the shaft member (1) is sequentially connected with the rotating member (2), the clutch member (3) and the elastic element (4) between the first limiting portion (11) and the second limiting portion (12), one end of the elastic element (4) abuts against the second limiting portion (12), the other end abuts against the clutch member (3), and the elastic element (4) is in a compressed state so that the elastic element can push the clutch member (3) to press the rotating member (2).
  3. 3. The damping clutch structure according to claim 2, wherein the elastic element (4) is a horn shape gradually expanding from the second limiting portion (12) to the clutch member (3), or the elastic element (4) is a spring, a spring pad or a wave pad.
  4. 4. The damping clutch structure according to claim 2, wherein the elastic element (4) comprises a first abutting portion (35) for abutting against the clutch member (3), an inclined portion (32) arranged in an inclined manner, and a second abutting portion (33) for abutting against the second limiting portion (12) which are sequentially connected.
  5. 5. The damping clutch structure according to claim 1, wherein the clutch member (3) is provided with an elastic abutting portion (34) extending toward the second abutting portion (33) and having elasticity.
  6. 6. The damping clutch structure according to claim 1, wherein the teeth (31) and the tooth grooves (21) are uniformly distributed along the circumferential direction and extend along the radial direction.
  7. 7. The damping clutch structure according to claim 1, wherein the cross section of the convex teeth (31) is triangular or semicircular, and the cross section of the tooth grooves (21) is matched with the convex teeth (31).
  8. 8. The damping clutch structure according to claim 1, wherein the rotating member (2) is a gear member, and the outer peripheral edge thereof is provided with gear teeth (22) for meshing transmission with an external gear.
  9. 9. A damped clutch structure according to any one of claims 2 to 4, wherein said elastic element (4) is a unitary structure made of elastic plastic or rubber.
  10. 10. The damping clutch structure according to any one of claims 1 to 8, wherein the shaft member (1) is an integral structure made of a metal material, and the rotary member (2) is an integral structure made of a plastic material, a metal material or a plastic-metal composite.

Description

Damping type clutch structure Technical Field The utility model particularly relates to a damping clutch structure. Background In the prior art, a small motor is widely used in various electric devices, and a transmission structure for transmitting rotation power generated by a rotor to an output shaft is generally arranged in the small motor. The transmission structure generally includes one or more transmission gears for effecting speed and torque conversion and transmission. In order to reduce noise generated in the running process and reduce the overall weight, the existing transmission gears are mostly made of plastic materials. However, since the small motor itself is compact in structure, the volume of the transmission gear is small, and although the plastic gear has good vibration and noise reduction performance, the strength is relatively low, and deformation and even fracture are easy to occur when bearing large torque. Particularly, under the condition that the output shaft is subjected to abnormal resistance or abrupt load change, the torque at the output end of the motor rises sharply, so that the transmission gear is extremely easy to damage, the normal operation of the whole transmission system is further influenced, and even equipment faults are caused. Therefore, the invention develops a miniature clutch assembly, which comprises a transmission gear part and a transmission shaft part, wherein a clutch structure capable of disconnecting the transmission gear part and the transmission shaft part when the transmission shaft part receives larger resistance is required to be designed between the transmission gear part and the transmission shaft part, so that the transmission part is prevented from being damaged. The present utility model has been made in view of the above-described drawbacks. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides a damping clutch structure capable of disconnecting transmission so as to protect transmission parts. The utility model is realized by the following technical scheme: The utility model provides a damping type clutch structure which comprises a shaft piece, wherein a first limiting part and a second limiting part are arranged on the shaft piece, a rotating piece and a clutch piece are connected between the first limiting part and the second limiting part, the rotating piece is connected to the shaft piece in a circumferential rotating mode, the clutch piece is connected to the shaft piece in an axial sliding mode and can rotate along with the shaft piece, the rotating piece and the clutch piece are mutually abutted, a tooth groove is formed in one side face, facing the clutch piece, of the rotating piece, and a convex tooth inserted into the tooth groove is formed in one side face, facing the rotating piece, of the clutch piece. According to the damping clutch structure, the shaft piece is sequentially connected with the rotating piece, the clutch piece and the elastic element between the first limiting part and the second limiting part, one end of the elastic element abuts against the second limiting part, the other end of the elastic element abuts against the clutch piece, and the elastic element is in a compressed state so that the elastic element can push the clutch piece to press the rotating piece. The damping clutch structure is characterized in that the elastic element is in a horn shape which gradually expands from the second limiting part to the clutch part, or the elastic element is a spring, a spring pad or a wave pad. The damping clutch structure comprises the elastic element, wherein the elastic element comprises a first abutting part, an inclined part and a second abutting part, the first abutting part is used for abutting against the clutch element, the inclined part is obliquely arranged, and the second abutting part is used for abutting against the second limiting part. The damping clutch structure is characterized in that the clutch member is provided with an elastic abutting part which extends towards the second abutting part and has elasticity. In the damping clutch structure, the convex teeth and the tooth grooves extend along the radial direction and are uniformly distributed along the circumferential direction. The section of the convex tooth is triangular or semicircular, and the section of the tooth slot is matched with the convex tooth. In the damping clutch structure, the rotating member is a gear member, and the outer peripheral edge of the rotating member is provided with gear teeth for meshing transmission with an external gear. 1. As described above, the damping clutch structure is characterized in that the shaft member (1) is an integral structure made of metal material, and the rotating member (2) is an integral structure made of plastic material, metal material or plastic-metal composite. As described above, the damping clutch structure is characterized in that the shaft