一种汽车可变式减震皮带轮
By introducing a variable transmission mechanism into the automotive shock absorber pulley, the problem of huge torque at startup is solved, achieving a rigid connection under high torque conditions, avoiding excessive deformation of the damping layer, and improving the service life and reliability of the pulley.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUYANG PULILIN AUTO PARTS CO LTD
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-17
AI Technical Summary
The shock absorber pulley of an automobile is subjected to a huge starting impact torque at the moment of startup, which leads to fatigue aging, plastic deformation, cracking and debonding of the damping layer, affecting its service life and reliability.
A variable damping pulley for automobiles was designed, integrating a variable transmission mechanism, including a transmission guide sleeve, a transmission connecting pin, and a limit stop. It can achieve elastic connection under normal working conditions and switch to rigid connection under high torque conditions to limit the deformation of the elastic damping body.
It quickly forms a rigid connection under high torque conditions, avoiding excessive twisting of the elastic damping body and significantly improving the service life and reliability of the pulley.
Smart Images
Figure CN224515858U_ABST
Abstract
Claims
1. A variable shock absorber pulley for automobiles, characterized in that, include: Inner hub (1), which is used for fixed connection with the rotating shaft; The outer wheel rim (2) is coaxially arranged around the inner hub rim (1) and is used to connect with the transmission belt; An elastic damping body (3) is formed and fixed in the annular cavity formed between the inner hub ring (1) and the outer wheel ring (2), so that the inner hub ring (1) and the outer wheel ring (2) are elastically coupled through the elastic damping body (3). A variable transmission mechanism is disposed between the inner hub ring (1) and the outer wheel ring (2). The variable transmission mechanism includes a plurality of transmission guide sleeves (4) uniformly arranged around the front side of the inner hub ring (1) and a transmission connecting block (5) correspondingly arranged on the front side of the outer wheel ring (2). The transmission guide sleeve (4) is nested and slidably provided with a transmission connecting pin (401), and a connecting spring (403) is provided in the middle of the transmission connecting pin (401). The transmission connecting block (5) is provided with an arc-shaped transmission groove (502) on its inner side, and limit stops (503) are provided on both sides of the arc-shaped transmission groove (502).
2. The automotive variable damper pulley according to claim 1, wherein The inner hub (1) is provided with a flange (101) and a shaft hole (102) for fixed connection with the engine rotating shaft. The flange (101) is provided with a plurality of bolt mounting holes (103).
3. The automotive variable damper pulley according to claim 1, wherein The outer circumferential surface of the outer wheel ring (2) is provided with multi-wedge-shaped belt teeth (201) for meshing with the transmission belt.
4. The automotive variable-damping pulley according to claim 1, characterized by The elastic damping body (3) is vulcanized rubber or polyurethane elastomer, which enables the torque of the inner hub ring (1) to be elastically transmitted to the outer wheel ring (2) through the shear and compression deformation of the elastic damping body (3).
5. The automotive variable-damping pulley according to claim 1, characterized by The outer rim (2) is uniformly surrounded by multiple fitting grooves (202) on its front side. The transmission connecting block (5) is fitted and slidably disposed inside the fitting grooves (202). The front side of the arc-shaped transmission groove (502) is provided with a transmission fitting groove (504). The transmission fitting groove (504) and the transmission connecting pin (401) are mutually fitted. A connecting sleeve (501) is provided in the middle of the transmission connecting block (5). An adjusting bolt (203) is rotatably connected in the middle of the fitting groove (202). The transmission connecting block (5) is connected to the adjusting bolt (203) through the connecting sleeve (501).
6. The automotive variable-damping pulley according to claim 1, characterized by The outer end of the transmission connecting pin (401) is provided with a contact ball (402).