制动踏板杠杆比测试工装
By designing a brake pedal lever ratio test fixture, the force and displacement of the brake pedal are accurately measured using components such as pressure sensors and sleeves. This solves the problem of low measurement accuracy in existing technologies and ensures high precision of the braking system and driving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海凯众材料科技股份有限公司
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have low measurement accuracy in brake pedal lever ratio testing. Manual operation and simple tools make it difficult to accurately measure minute force and displacement changes, resulting in inaccurate test results that cannot meet the high precision requirements of modern automobiles for braking systems.
A brake pedal lever ratio test fixture is used, including a fixture base, a fixture top seat, a pressure testing mechanism, and a positioning plate. The pressure sensor is used to accurately measure the input and output forces of the brake pedal, and the actual lever ratio is calculated by indexing through a sleeve, push rod, and positioning plate.
It enables precise measurement of the brake pedal lever ratio, ensuring the reliability of the vehicle braking system and the safety of the driver, and avoiding safety problems such as brake failure or excessive braking distance caused by an unreasonable lever ratio.
Smart Images
Figure CN224518156U_ABST
Abstract
Claims
1. A brake pedal lever ratio test fixture characterized by, The device includes a tooling base, a tooling top seat, a pressure testing mechanism, and a positioning plate. The tooling base is equipped with the tooling top seat, and the tooling top seat is equipped with the positioning plate. The pressure testing mechanism is located at the lower end of the positioning plate, and a brake pedal is installed at the upper end of the positioning plate. The pressure testing mechanism includes a sleeve, a push rod, and a pressure sensor. One end of the sleeve is detachably connected to the positioning plate, and the pressure sensor is located inside the sleeve. One end of the push rod contacts the pressure sensor, and the other end of the push rod is connected to the brake pedal.
2. The brake pedal ratio test fixture of claim 1 wherein, The positioning plate has mounting holes, and the sleeve is positioned opposite the mounting holes.
3. The brake pedal ratio test fixture of claim 2 wherein, The brake pedal includes a connecting sleeve and a pedal arm, the connecting sleeve being detachably connected to the pedal arm, and the other end of the push rod extending into the connecting sleeve.
4. The brake pedal ratio test fixture of claim 2 wherein, It also includes several positioning plates and guide members. Several positioning plates are arranged inside the sleeve and are stacked along the axial direction of the sleeve. The guide members are also arranged inside the sleeve. One end of the guide members is connected to the pressure sensor, and the other end of the guide members passes through several positioning plates and extends out of the other end of the sleeve.
5. The brake pedal ratio test fixture of claim 4 wherein, The sleeve has slots on both sides, and the two ends of the positioning pieces are located in the two slots.
6. The brake pedal ratio test fixture of claim 4 wherein, The positioning piece is arranged in a "U" shape.
7. The brake pedal ratio test fixture of claim 1 wherein, The tooling base includes a base plate, a first side plate, and reinforcing ribs. Two first side plates are provided at the upper end of the base plate, and a plurality of reinforcing ribs are provided between the first side plates and the base plate.
8. The brake pedal ratio test fixture of claim 7 wherein, Each of the first side plates has a plurality of first positioning holes.
9. The brake pedal ratio test fixture of claim 8 wherein, The tooling top seat includes a top plate, a second side plate, and a locking member. Two second side plates are provided on both sides of the top seat, and the two second side plates are located between the two first side plates. A second positioning hole is provided on the second side plate. The second side plate is rotatably connected to the first side plate. The locking member is provided in the corresponding first positioning hole and second positioning hole. The positioning plate is installed on the upper end of the top plate.