Active return mechanism of brake caliper friction plate
By adding an active return mechanism and groove structure to the brake caliper friction pads, the problems of space occupation and sharp increase in return force in the prior art are solved, realizing that the friction pads automatically leave the brake disc, reducing the braking drag torque and improving the performance of the braking system.
Patent Information
- Application Number
- CN202520156302.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The existing friction plate return mechanism occupies space in the motor-driven caliper, affecting the motor layout. Furthermore, when worn, it causes a sharp increase in return force and noise, affecting braking performance.
Design an active return mechanism for brake caliper friction pads. By adding an active return mechanism to the spring plate and setting a groove on the back plate of the friction pad to accommodate the mechanism, the friction pads are ensured to automatically leave the brake disc after braking.
It reduces braking drag torque, avoids contact between the return mechanism and the brake disc, and improves pedal feel and braking performance.
Smart Images
Figure CN223648381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of braking system technology, specifically to an active return mechanism for brake caliper friction pads. Background Technology
[0002] There are two existing designs for friction plate return mechanisms: one is located near the piston side, but for calipers such as EPB that include motor drive, this would encroach on the space for motor placement; the other is located near the disc side, but this return structure protrudes towards the bracket, which would encroach on the bracket space and affect the bracket's strength, deformation, and lightweight design.
[0003] When the friction pads are nearly fully worn, the contact point between the friction pad backing plate and the spring plate will change significantly. This change will cause the return force to increase sharply, resulting in a significant increase in fluid demand and affecting the pedal feel. Furthermore, the return structure located between the friction pad backing plate and the brake disc can easily scrape the brake disc, which will produce a sharp noise and also affect braking performance. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, this utility model provides an active return mechanism for brake caliper friction pads. By adding an active return mechanism to the spring plate, the friction pads can automatically leave the brake disc after braking ends, thereby reducing the braking drag torque.
[0005] To achieve the above objectives, an active return mechanism for brake caliper friction pads is designed, comprising a friction pad back plate and a spring plate. Spring plates are connected to the left and right sides of the friction pad back plate, and the friction pad back plate is fixed to the brake caliper bracket via the spring plates. The spring plate comprises an upper part, a middle part, and a lower part, all integrally formed from top to bottom. An anti-detachment structure is provided on the upper side of the middle part of the spring plate, and an active return mechanism is connected to one side of the middle part. Spring plate connecting portions are provided on the left and right sides of the friction pad back plate, and the spring plate connecting portions have groove structures that cooperate with the active return mechanism of the spring plate.
[0006] The groove structure of the friction plate back plate is a rectangular groove, and the depth and width of the groove structure are matched with the active return mechanism.
[0007] The active return mechanism on the middle part of the spring sheet is an L-shaped bending structure connected to the right side of the middle part of the spring sheet, and the shape of the L-shaped bending structure matches the groove structure of the active return mechanism.
[0008] One end of the active return mechanism is connected to the right side of the middle part of the spring plate, and the other end of the active return mechanism is bent outward.
[0009] The upper part of the spring sheet has a three-claw-shaped wrapping structure, and the three claws on the upper part of the spring sheet are in contact with the brake caliper bracket.
[0010] The lower part of the spring sheet has a right-angled structure, and a guide protrusion structure is connected to the side of the right-angled structure.
[0011] The lower part of the spring plate is located between the brake caliper bracket and the friction plate backing plate.
[0012] The anti-detachment structure on the middle part of the spring sheet is located on the upper side of the middle part of the spring sheet, and one end of the anti-detachment structure is connected to the connecting part of the upper part and the middle part of the spring sheet, while the other end of the anti-detachment structure is a guide plate structure with a semi-cylindrical protrusion at the root.
[0013] Compared with the prior art, this utility model provides an active return mechanism for brake caliper friction pads. By adding an active return mechanism to the spring plate and adding a groove to the back plate of the friction pad to accommodate the active return mechanism, it is ensured that the active return mechanism will not contact the brake disc, so that the friction pad can automatically leave the brake disc after braking ends, thereby reducing the braking drag torque. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure and installation of the brake caliper bracket of this utility model.
[0015] Figure 2 This is a cross-sectional view of the structure and installation of this utility model.
[0016] Figure 3 This is a schematic diagram showing the connection between the active return mechanism and the friction plate back plate in the structure of this utility model.
[0017] Figure 4 This is a schematic diagram of the spring sheet in this utility model.
[0018] Figure 5 This is a schematic diagram of the structure of the friction plate backing plate in this utility model.
[0019] Figure 6 This is a cross-sectional structural diagram of the friction plate backing plate in this utility model.
[0020] See Figures 1 to 6 1 is the brake caliper bracket, 2 is the spring plate, 3 is the friction plate backing plate, 4 is the anti-detachment structure, 5 is the active return mechanism, 6 is the spring plate connecting part, and 7 is the groove structure. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] like Figures 1 to 5As shown, spring plates 2 are connected to the left and right sides of the friction plate backing plate 3, and the friction plate backing plate 3 is fixed to the brake caliper bracket 1 by the spring plates 2. The spring plate 2 includes an upper part, a middle part, and a lower part, and the upper part, middle part, and lower part are integrally formed from top to bottom. An anti-detachment structure 4 is provided on the upper side of the middle part of the spring plate, and an active return mechanism 5 is connected to one side of the middle part of the spring plate. Spring plate connecting parts 6 are provided on the left and right sides of the friction plate backing plate 3, and a groove structure 7 is provided on the spring plate connecting parts 6 to cooperate with the active return mechanism 5 of the spring plate 2.
[0023] The groove structure 7 of the friction plate back plate 3 is a rectangular groove, and the depth and width of the groove structure 7 are matched with the active return mechanism 5.
[0024] The active return mechanism 5 on the middle of the spring sheet is an L-shaped bending structure connected to the right side of the middle of the spring sheet, and the shape of the L-shaped bending structure matches the groove structure 7 of the active return mechanism 5.
[0025] One end of the active return mechanism 5 is connected to the right side of the middle of the spring plate, and the other end of the active return mechanism 5 is bent outward.
[0026] The upper part of the spring plate has a three-claw-shaped wrapping structure, and the three claws on the upper part of the spring plate are in contact with the brake caliper bracket 1.
[0027] The lower part of the spring sheet has a right-angled structure, and a guide protrusion is connected to the side of the right-angled structure.
[0028] The lower part of the spring plate is located between the brake caliper bracket 1 and the friction plate backing plate 3.
[0029] The anti-detachment structure 4 on the middle part of the spring sheet is located on the upper side of the middle part of the spring sheet, and one end of the anti-detachment structure 4 is connected to the connecting part of the upper part and the middle part of the spring sheet, and the other end of the anti-detachment structure 4 is a guide plate structure with a semi-cylindrical protrusion at the root.
[0030] In use, the spring plate 2 with active return mechanism 5 is mounted on the brake caliper bracket 1. Four spring plates are mounted on one brake caliper bracket 1. The four spring plates are two spring plates 2 per group, and each group of spring plates is a mirror image of the two spring plates.
[0031] The groove structure 7 on the friction pad backing plate 3 is designed to cooperate with the active return mechanism 5. Its shape has been analyzed and optimized to ensure that it cooperates with the active return mechanism 5 throughout the entire service life of the friction pad and ensures the normal operation of the return mechanism. The active return mechanism 5 applies a force away from the brake disc to the friction pad, so that the friction pad actively leaves the brake disc after braking ends, thereby achieving the function of active return of the friction pad. The groove structure 7 on the friction pad backing plate 3 is designed to match the shape of the active return mechanism 5 on the spring plate 2, ensuring that it provides a stable and effective active return function throughout the process of the friction pad from new pad to complete wear.
Claims
1. An active return mechanism for brake caliper friction pads, comprising a friction pad back plate and spring plates, wherein spring plates (2) are respectively connected to the left and right sides of the friction pad back plate (3), and the friction pad back plate (3) is fixed to the brake caliper bracket (1) by the spring plates (2), characterized in that: The spring sheet (2) includes an upper part, a middle part, and a lower part, and the upper part, middle part, and lower part are integrally formed from top to bottom. An anti-drop structure (4) is provided on the upper side of the middle part of the spring sheet, and an active return mechanism (5) is connected to one side of the middle part of the spring sheet. The friction plate back plate (3) is provided with spring sheet connecting parts (6) on the left and right sides respectively. The spring sheet connecting parts (6) are provided with a groove structure (7) that cooperates with the active return mechanism (5) of the spring sheet (2).
2. The active return mechanism for brake caliper friction pads according to claim 1, characterized in that: The groove structure (7) of the friction plate back plate (3) is a rectangular groove, and the depth and width of the groove structure (7) are matched with the active return mechanism (5).
3. The active return mechanism for brake caliper friction pads according to claim 1, characterized in that: The active return mechanism (5) on the middle part of the spring sheet is an L-shaped bending structure connected to the right side of the middle part of the spring sheet, and the shape of the L-shaped bending structure matches the groove structure (7) of the active return mechanism (5).
4. The active return mechanism for brake caliper friction pads according to claim 3, characterized in that: One end of the active return mechanism (5) is connected to the right side of the middle part of the spring sheet, and the other end of the active return mechanism (5) is bent outward.
5. The active return mechanism for brake caliper friction pads according to claim 1, characterized in that: The upper part of the spring sheet has a three-claw-shaped wrapping structure, and the three claws on the upper part of the spring sheet are in contact with the brake caliper bracket (1).
6. The active return mechanism for brake caliper friction pads according to claim 1, characterized in that: The lower part of the spring sheet has a right-angled structure, and a guide protrusion structure is connected to the side of the right-angled structure.
7. The active return mechanism for a brake caliper friction pad according to claim 1 or 6, characterized in that: The lower part of the spring plate is located between the brake caliper bracket (1) and the friction plate back plate (3).
8. The active return mechanism for brake caliper friction pads according to claim 1, characterized in that: The anti-detachment structure (4) on the middle part of the spring sheet is located on the upper side of the middle part of the spring sheet, and one end of the anti-detachment structure (4) is connected to the upper part of the spring sheet and the connecting part of the middle part of the spring sheet. The other end of the anti-detachment structure (4) is a guide plate structure with a semi-cylindrical protrusion at the root.