Low-offset semi-floating disc brake disc
By introducing a support column and linkage structure into the low-offset semi-floating disc brake, combined with spring buffer and rivet limit, the problems of vibration and uneven friction surface during braking are solved, achieving a quiet and smooth braking process and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN SANZHILI LOCOMOTIVE PARTS CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-05-19
AI Technical Summary
Existing low-offset semi-floating disc brakes are prone to high-frequency vibration and shaking during braking, which affects the stability of riding and handling. Furthermore, it is difficult for the friction surfaces of the brake pads and the disc to maintain uniform pressure, resulting in localized uneven wear and shortened service life.
A low-offset semi-floating disc brake was designed. By setting support columns and linkage structures inside the friction disc, combined with spring buffering and rivet limiting, vibration energy is absorbed, allowing the friction part to adjust its position within a reasonable range, ensuring uniform contact and avoiding displacement restriction.
It effectively absorbs vibration energy, reduces noise, improves the smoothness and stability of the braking process, extends the service life of friction components, and ensures braking linearity and stability.
Smart Images

Figure CN224260776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semi-floating disc brake technology, and particularly to a low-offset semi-floating disc brake. Background Technology
[0002] Low-offset semi-floating disc brakes are components used in vehicle braking systems. They combine the low cost of fixed discs with the floating capability of fully floating discs, improving braking performance and stability to a certain extent. When a vehicle brakes, the brake caliper clamps the disc, generating friction to slow the vehicle. During this process, the disc expands due to heat generated by friction. The floating structure of the low-offset semi-floating disc allows the friction parts of the disc some free expansion space, enabling it to slightly wobble to adjust the optimal friction angle with the brake pads, maintaining good braking force while preventing distortion and deformation due to uneven heating.
[0003] In existing technologies, semi-floating disc brakes combine the advantages of braking performance and stability with the specific vehicle compatibility and performance optimization brought about by low offset. They are often used in situations where there are certain requirements for braking performance and the vehicle structure has corresponding adaptation needs, such as some high-performance motorcycles and modified cars. However, when some devices brake, the friction between the brake pads and the disc is directly transmitted to the wheel hub and frame, causing high-frequency vibration. The vibration is also directly transmitted to the caliper, frame, and even handlebars, resulting in obvious shaking when braking and affecting the stability of riding and handling. Utility Model Content
[0004] The purpose of this invention is to absorb this vibration energy, reduce noise from rigid metal-to-metal contact, make the braking process quieter and smoother, and allow the friction part to adjust its position more flexibly within a reasonable range, ensuring uniform contact with the caliper and brake pads at all times. This avoids braking deviation caused by limited displacement, improves braking linearity and stability, and provides a low-offset semi-floating disc brake. It solves the problem of difficulty in maintaining uniform pressure on the contact surfaces of the disc and brake pads, leading to localized uneven wear such as excessively rapid wear at the disc edges and localized overheating and hardening of the brake pads. Over time, this will shorten the service life of both and increase the frequency of replacement.
[0005] This utility model also provides a semi-floating disc brake disc with the above-mentioned low offset, including a friction disc, wherein a plurality of support columns are fixedly connected inside the friction disc, a fixed disc is fixedly connected to one end of the support columns, a plurality of first fixed blocks are fixedly connected to the outside of the fixed disc, a first rotating shaft is rotatably connected inside the first fixed block, and a first connecting rod is rotatably connected to the outside of the first rotating shaft.
[0006] According to the low offset semi-floating disc brake of this utility model, one end of the first connecting rod is rotatably connected to a second rotating shaft, and the outside of the second rotating shaft is rotatably connected to a second connecting rod.
[0007] According to the low offset semi-floating disc brake of this utility model, one end of the second connecting rod is rotatably connected to a third rotating shaft, and a second fixed block is rotatably connected to the outside of the third rotating shaft.
[0008] According to the low offset semi-floating disc brake of this utility model, the second fixing block is externally fixedly connected to a collar, and the collar is internally slidably connected to a slide rod.
[0009] According to the low offset semi-floating disc brake of this utility model, a spring is sleeved on the outside of the slide rod, and the outside of the slide rod is fixedly connected to the inside of the friction disc.
[0010] According to the low offset semi-floating disc brake disc of this utility model, the friction disc is provided with multiple connecting parts on the outside, and two rivets are rotatably connected inside the connecting parts.
[0011] According to the low offset semi-floating disc brake of this utility model, an outer plate is provided outside the rivet, and a mounting part is fixedly connected inside the outer plate.
[0012] According to the low offset semi-floating disc brake disc of this utility model, the mounting part has multiple ventilation slots inside.
[0013] Beneficial effects:
[0014] 1. The low-offset semi-floating disc brake of this technical solution, located outside the fixed disc, experiences vibrations during operation, causing the outer collar of the slide rod to move. This collar moves the outer second fixed block, which in turn rotates the inner third rotating shaft. The third rotating shaft then moves the outer second connecting rod, which in turn rotates one end of the second rotating shaft. This second rotating shaft, in turn, moves the outer first connecting rod, causing it to rotate one end of the first rotating shaft. The spring outside the slide rod provides cushioning, thus absorbing vibration energy, reducing noise from rigid metal contact, making the braking process quieter and smoother, and allowing the friction part to adjust its position more flexibly within a reasonable range. This ensures a uniform fit with the caliper brake pads, avoiding braking deviations caused by limited displacement, and improving braking linearity and stability.
[0015] 2. A circumferentially equidistant connecting part is provided between the mounting part and the friction part. A connecting part with a fracture opening formed by cutting is provided between adjacent connecting parts. A rivet is provided at the fracture opening to restrict the radial movement of the friction part, so that the disc brake disc will not deviate excessively while ensuring floating performance, thus ensuring the stability and reliability of braking. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a structural diagram of the low-offset semi-floating disc brake of this utility model;
[0018] Figure 2 This is a schematic diagram of the support column for the low-offset semi-floating disc brake proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the spring structure of the low offset semi-floating disc brake disc proposed in this utility model.
[0020] Legend:
[0021] 1. Friction disc; 2. Connecting part; 3. Rivet; 4. Outer disc; 5. Mounting part; 6. Ventilation slot; 7. Support column; 8. Fixing disc; 9. First fixing block; 10. First rotating shaft; 11. First connecting rod; 12. Second rotating shaft; 13. Second connecting rod; 14. Third rotating shaft; 15. Second fixing block; 16. Collar; 17. Slide rod; 18. Spring. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] Reference Figure 1-3 The present invention relates to a low offset semi-floating disc brake, which includes a friction disc 1. Multiple support columns 7 are fixedly connected inside the friction disc 1. A fixed disc 8 is fixedly connected to one end of each support column 7. Multiple first fixed blocks 9 are fixedly connected to the outside of the fixed disc 8. A first rotating shaft 10 is rotatably connected inside the first fixed block 9. A first connecting rod 11 is rotatably connected to the outside of the first rotating shaft 10.
[0024] Specifically, the first connecting rod 11 drives the first rotating shaft 10 at one end to rotate, and is buffered by the elastic action of the spring 18 outside the slide rod 17.
[0025] One end of the first connecting rod 11 is rotatably connected to the second rotating shaft 12, and the outside of the second rotating shaft 12 is rotatably connected to the second connecting rod 13.
[0026] One end of the second connecting rod 13 is rotatably connected to the third rotating shaft 14, and the outside of the third rotating shaft 14 is rotatably connected to the second fixing block 15.
[0027] The second fixing block 15 is externally fixedly connected to a collar 16, and the collar 16 is internally slidably connected to a slide rod 17.
[0028] A spring 18 is fitted around the outside of the slide rod 17, and the outside of the slide rod 17 is fixedly connected to the inside of the friction disc 1.
[0029] Specifically, when the mechanism is in operation, the vibration it experiences causes the outer collar 16 of the slide rod 17 to move. The collar 16 drives the outer second fixed block 15 to move, and the second fixed block 15 drives the inner third rotating shaft 14 to rotate. As a result, the third rotating shaft 14 drives the outer second connecting rod 13 to move. The second connecting rod 13 drives the second rotating shaft 12 at one end to rotate, and the second rotating shaft 12 drives the outer first connecting rod 11 to move. This causes the first connecting rod 11 to drive the first rotating shaft 10 at one end to rotate, and the mechanism is buffered by the elastic action of the spring 18 outside the slide rod 17.
[0030] The friction disc 1 has multiple connecting parts 2 on its exterior, and two rivets 3 are rotatably connected inside the connecting parts 2.
[0031] The rivet 3 has an outer plate 4 on its outside, and the outer plate 4 has an mounting part 5 fixedly connected inside.
[0032] Specifically, a circumferentially equidistant connecting part 2 is provided between the mounting part 5 and the friction part 1, and a connecting part 2 with a fracture opening formed by cutting is provided between adjacent connecting parts 2. A rivet 3 is provided at the fracture opening to restrict the radial movement of the friction part.
[0033] The interior of the mounting section 5 has multiple ventilation slots 6.
[0034] Working principle: When the mechanism is in operation, the vibration outside the fixed plate 8 causes the collar 16 outside the slide rod 17 to move. The collar 16 drives the second fixed block 15 to move, which in turn drives the third rotating shaft 14 inside to rotate. This third rotating shaft 14 then drives the second connecting rod 13 outside to move. The second connecting rod 13 drives the second rotating shaft 12 at one end to rotate, which in turn drives the first connecting rod 11 outside to move. This causes the first connecting rod 11 to drive the first rotating shaft 10 at one end to rotate. The spring 18 outside the slide rod 17 provides cushioning, thus protecting the mechanism. The system incorporates a buffer to absorb vibration energy, reduce noise from rigid metal-to-metal contact, and make the braking process quieter and smoother. It also allows the friction part to adjust its position more flexibly within a reasonable range, ensuring that it always fits evenly with the caliper brake pads and avoiding braking deviation caused by limited displacement. This improves the linearity and stability of the braking system. A circumferentially equidistant connecting part 2 is provided between the mounting part 5 and the friction part 1. A connecting part 2 with a fractured opening formed by cutting is provided between adjacent connecting parts 2. A rivet 3 is provided at the fracture opening to restrict the radial movement of the friction part, so that the disc brake disc does not deviate excessively while ensuring floating performance, thus ensuring the stability and reliability of braking.
[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A low-offset semi-floating disc brake, comprising a friction disc (1), characterized in that: The friction disc (1) is internally fixedly connected to a plurality of support columns (7), one end of the support column (7) is fixedly connected to a fixed disc (8), the fixed disc (8) is externally fixedly connected to a plurality of first fixed blocks (9), the first fixed block (9) is internally rotatably connected to a first rotating shaft (10), and the first rotating shaft (10) is externally rotatably connected to a first connecting rod (11).
2. The low-offset semi-floating disc brake according to claim 1, characterized in that, One end of the first connecting rod (11) is rotatably connected to a second rotating shaft (12), and the outside of the second rotating shaft (12) is rotatably connected to a second connecting rod (13).
3. The low-offset semi-floating disc brake according to claim 2, characterized in that, One end of the second connecting rod (13) is rotatably connected to a third rotating shaft (14), and the outside of the third rotating shaft (14) is rotatably connected to a second fixed block (15).
4. The low-offset semi-floating disc brake according to claim 3, characterized in that, The second fixing block (15) is externally fixedly connected to a collar (16), and the collar (16) is internally slidably connected to a slide rod (17).
5. The low-offset semi-floating disc brake disc according to claim 4, characterized in that, A spring (18) is sleeved on the outside of the slide rod (17), and the outside of the slide rod (17) is fixedly connected to the inside of the friction disc (1).
6. The low-offset semi-floating disc brake according to claim 1, characterized in that, The friction disc (1) has multiple connecting parts (2) on its exterior, and two rivets (3) are rotatably connected inside the connecting parts (2).
7. The low-offset semi-floating disc brake according to claim 6, characterized in that, The rivet (3) is provided with an outer plate (4) on the outside, and an installation part (5) is fixedly connected inside the outer plate (4).
8. The low-offset semi-floating disc brake according to claim 7, characterized in that, The mounting part (5) has multiple ventilation slots (6) inside.