Automobile brake pad assembly
The structure of locking pins and locking blocks enables quick disassembly and installation of the back steel and brake pads, solving the problems of cumbersome and costly brake pad replacement in existing technologies, and realizing the reuse of the back steel and the convenience of maintenance.
Patent Information
- Application Number
- CN202520663856.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-09
Smart Images

Figure CN223839613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive brake pad assembly. Background Technology
[0002] Brake pads and the backing plate are the core components of a braking system, working together to decelerate and stop a vehicle. Brake pads are the friction material components in the braking system that directly contact the brake disc (or brake drum in drum brakes). Their main function is to convert kinetic energy into heat energy through friction, thereby achieving deceleration or stopping. The backing plate is the metal support structure for the brake pads, usually made of low-carbon steel or stainless steel. Its main functions are to fix the friction material, transmit braking force, and protect the braking system.
[0003] Currently, the connection between brake pads and the backing steel is mainly achieved through riveting and bonding. Riveting uses high-strength rivets to fix the friction material (brake pad body) to the backing steel. When replacing brake pads, the entire backing steel usually needs to be scrapped, which is costly. Bonding uses high-strength epoxy resin or polyurethane adhesive to bond the friction material to the backing steel. When disassembling brake pads, it is necessary to grind or use chemical solvents to remove residual adhesive. Although the backing steel can be reused, replacing brake pads is more complicated. Utility Model Content
[0004] This utility model addresses the aforementioned shortcomings of existing technologies by providing an automotive brake pad assembly. A locking pin secures the backing steel to the brake pad through a pull-and-fix mechanism. The locking pin is rotatable, facilitating quick brake pad replacement and maintenance. Furthermore, it allows for the reuse of the backing steel, saving costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An automotive brake pad assembly includes a backing steel and a brake pad. One side of the backing steel is provided with a mounting groove for mounting the brake pad. A locking pin for fixing the brake pad is provided in the mounting groove. A locking block is provided at the end of the locking pin. The brake pad is provided with a slot that cooperates with the locking block. The locking block and the slot cooperate to fix the backing steel and the brake pad. After the locking pin is rotated open, the backing steel and the brake pad can be disassembled.
[0007] Preferably, the mounting groove is provided with a mounting hole that mates with the locking pin, and the two ends of the mounting hole are respectively provided with an upper positioning groove and a lower positioning groove. The side wall of the locking pin is provided with a positioning ring that mates with the upper positioning hole, and the end of the locking pin is provided with an end cap that mates with the lower positioning groove. The end cap is provided with an opening groove.
[0008] Preferably, the bottom of the brake pad is provided with a fixing hole that mates with the locking pin, and the side wall of the fixing hole is provided with a slot and a clearance groove for disassembling and assembling the locking block, and the slot and the clearance groove are connected.
[0009] Preferably, the mounting groove is provided with a positioning block, and the bottom of the brake pad is provided with a positioning stop groove that cooperates with the positioning block.
[0010] Preferably, the bottom of the back steel is provided with a locking pin for fixing the locking post.
[0011] Preferably, the bottom of the back steel is provided with a sliding groove, the side wall of the sliding groove is provided with a storage groove, the locking pin cooperates with the sliding groove, one end of the locking pin is provided with a stop block, the stop block is located in the storage groove, the storage groove is provided with a spring that pushes the locking pin outward, and the end cover is provided with a locking groove that cooperates with the locking pin.
[0012] Preferably, the bottom of the storage slot is provided with a guide hole, the end of the stop block is connected to a guide rod that cooperates with the guide hole, and the spring is sleeved on the outside of the guide rod.
[0013] Preferably, the side wall of the locking pin is provided with an opening hole.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model achieves the pulling and fixing of the back steel and the brake pad through the locking column. The locking column can be rotated open, which facilitates the quick replacement of the brake pad and makes maintenance convenient. At the same time, it realizes the reuse of the back steel and saves costs.
[0016] 2. The locking pin in this utility model can fix the locking pin, prevent the locking pin from rotating on its own during use, and ensure the reliability and safety of use.
[0017] 3. The brake pad of this utility model is located in the mounting groove of the back steel, and at the same time, the positioning block and the positioning stop groove cooperate to ensure the firmness of the horizontal cooperation between the back steel and the brake pad, and ensure safe use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the brake pad structure;
[0021] Figure 4 Schematic diagram of the back steel structure Figure 1 ;
[0022] Figure 5 Schematic diagram of the back steel structure Figure 2 ;
[0023] Figure 6 Schematic diagram of the locking pin structure Figure 1 ;
[0024] Figure 7 Schematic diagram of the locking pin structure Figure 2 ;
[0025] Figure 8 This is a schematic diagram of the structure of the back steel and the locking pin.
[0026] Figure 9 This is a schematic diagram of the locking pin structure;
[0027] Figure 10 This is a partial cross-sectional view of the present invention;
[0028] In the diagram: 1-Back steel; 101-Upper positioning groove; 102-Mounting hole; 103-Positioning block; 104-Lower positioning groove; 105-Sliding groove; 106-Mounting groove; 107-Storage groove; 108-Spring; 109-Guide hole; 2-Brake pad; 201-Positioning stop groove; 202-Card groove; 203-Leaning groove; 204-Fixing hole; 3-Locking pin; 301-Opening hole; 302-Stop block; 303-Guide rod; 4-Locking pin; 401-Locking block; 402-Positioning ring; 403-End cap; 404-Opening groove; 405-Locking groove. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] like Figure 1 , Figure 2 As shown, an automotive brake pad 2 assembly includes a backing steel 1 and a brake pad 2. One side of the backing steel 1 has a mounting groove 106 for mounting the brake pad 2, which positions the brake pad 2 around its perimeter and prevents slippage between the brake pad 2 and the backing steel 1. A locking pin 4 for fixing the brake pad 2 is provided within the mounting groove 106, and a locking block 401 is provided at the end of the locking pin 4. Figure 3 As shown, the brake pad 2 has a slot 202 that cooperates with the locking block 401. The locking block 401 and the slot 202 cooperate to fix the back steel 1 and the brake pad 2. After the locking pin 4 is rotated open, the back steel 1 and the brake pad 2 can be disassembled.
[0031] like Figure 4 , Figure 5 , Figure 8As shown, the mounting groove 106 is provided with a mounting hole 102 that mates with the locking pin 4. The two ends of the mounting hole 102 are respectively provided with an upper positioning groove 101 and a lower positioning groove 104, as shown. Figure 6 As shown, the side wall of the locking pin 4 is provided with a positioning ring 402 that mates with the upper positioning hole, and the end of the locking pin 4 is provided with an end cap 403 that mates with the lower positioning groove 104. The end cap 403 and the positioning ring 402 work together to fix the locking pin 4, so that the locking pin 4 can only rotate within the mounting hole 102. Figure 7 As shown, the end cap 403 is provided with an opening groove 404. With the help of a screwdriver and the opening groove 404, the locking pin 4 can be rotated.
[0032] like Figure 3 As shown, the bottom of the brake pad 2 is provided with a fixing hole 204 that cooperates with the locking pin 4. The bottom of the side wall of the fixing hole 204 is provided with a slot 202 and a relief groove 203 that runs along the length of the fixing hole 204. The slot 202 and the relief groove 203 are connected. The locking block 401 is installed into the fixing hole 204 through the relief groove 203. When the locking pin 4 is rotated, the locking block 401 cooperates with the slot 202 to pull the brake pad 2, thereby realizing the connection and fixation between the brake pad 2 and the back steel 1.
[0033] The mounting slot 106 is provided with a positioning block 103, and the bottom of the brake pad 2 is provided with a positioning stop groove 201 that cooperates with the positioning block 103, which can further fix the brake pad 2 in the horizontal direction and ensure its reliability and firmness during use.
[0034] The bottom of the back steel 1 is provided with a locking pin 3 for fixing the locking post 4. The locking pin 3 can prevent the locking post 4 from rotating, ensuring safe and reliable use.
[0035] A sliding groove 105 is provided at the bottom of the back steel 1, and a storage groove 107 is provided on the side wall of the sliding groove 105. The locking pin 3 cooperates with the sliding groove 105, such as... Figure 9 , Figure 10 As shown, one end of the locking pin 3 is provided with a stop block 302, which is located in the storage groove 107. The storage groove 107 is provided with a spring 108 that pushes the locking pin 3 outward. The end cover 403 is provided with a locking groove 405 that cooperates with the locking pin 3. After the locking block 401 cooperates with the slot 202, the locking pin 3 can just cooperate with the locking groove 405 to fix the locking pin 4.
[0036] To improve the stability of the sliding of the locking pin 3, a guide hole 109 is provided at the bottom of the storage groove 107, and a guide rod 303 that cooperates with the guide hole 109 is connected to the end of the stop block 302, and a spring 108 is sleeved on the outside of the guide rod 303.
[0037] The side wall of the locking pin 3 is provided with an opening hole 301. By inserting a screwdriver or other tool into the opening hole 301 and sliding the locking pin 3, the locking pin 3 can be disengaged from the locking groove 405. Then, the locking pin 4 can be rotated to open the lock, thus enabling the removal of the brake pad 2. When installing the brake pad 2, the locking pin 4 is inserted into the fixing hole 204 and rotated 90° to make the locking block 401 fully engage with the slot 202. When the lock pin 3 is rotated to the correct position (90°), it will automatically spring into the locking groove 405 under the action of the spring 108, thus fixing the locking pin 4.
[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. An automotive brake pad assembly, comprising a backing steel and brake pads, characterized in that: One side of the back steel is provided with a mounting groove for installing brake pads. The mounting groove is provided with a locking pin for fixing the brake pads. The end of the locking pin is provided with a locking block. The brake pad is provided with a slot that cooperates with the locking block. The locking block and the slot can fix the back steel and the brake pads together. After the locking pin is rotated open, the back steel and the brake pads can be disassembled.
2. The automotive brake pad assembly as described in claim 1, characterized in that: The mounting groove is provided with a mounting hole that mates with the locking pin. The two ends of the mounting hole are respectively provided with an upper positioning groove and a lower positioning groove. The side wall of the locking pin is provided with a positioning ring that mates with the upper positioning hole. The end of the locking pin is provided with an end cap that mates with the lower positioning groove. The end cap is provided with an opening groove.
3. The automotive brake pad assembly as described in claim 1, characterized in that: The bottom of the brake pad is provided with a fixing hole that mates with the locking pin. The side wall of the fixing hole is provided with a slot and a clearance groove for disassembling and assembling the locking block. The slot and the clearance groove are connected.
4. The automotive brake pad assembly as described in claim 1, characterized in that: The mounting groove is provided with a positioning block, and the bottom of the brake pad is provided with a positioning groove that cooperates with the positioning block.
5. The automotive brake pad assembly as described in claim 2, characterized in that: The bottom of the back steel is provided with a locking pin for fixing the locking post.
6. The automotive brake pad assembly as described in claim 5, characterized in that: The bottom of the back steel is provided with a sliding groove, and the side wall of the sliding groove is provided with a storage groove. The locking pin cooperates with the sliding groove, and one end of the locking pin is provided with a stop block. The stop block is located in the storage groove, and a spring is provided in the storage groove to push the locking pin outward. The end cover is provided with a locking groove that cooperates with the locking pin.
7. The automotive brake pad assembly as described in claim 6, characterized in that: The bottom of the storage slot is provided with a guide hole, and the end of the stop block is connected to a guide rod that cooperates with the guide hole. The spring is sleeved on the outside of the guide rod.
8. The automotive brake pad assembly as described in claim 6, characterized in that: The locking pin has an opening hole on its side wall.