A type of electric vehicle disc brake that can quickly reset

Abstract

This utility model relates to the field of disc brake technology and discloses a fast-resetting disc brake for electric vehicles. It includes a brake disc with heat dissipation holes on its surface. A disc brake assembly is snapped onto the surface of the brake disc, comprising a first disc brake pad and a second disc brake pad. Disc brake pad support plates are fixedly connected to both the first and second disc brake pads. A fast-resetting plate is fixedly installed between the two sets of disc brake pad support plates. The two sets of disc brake pad support plates pass through a fixing post and the fast-resetting plate. A reset spring is sleeved on the surface of the fixing post. This utility model utilizes the synergistic action of two springs; the reset spring and the tower-shaped multi-stage spring post jointly provide the rebound force, ensuring that the disc brake pad quickly disengages from the brake disc after brake release. This avoids the dragging phenomenon caused by insufficient reset of traditional sealing rings, achieving fast and stable reset of the electric vehicle disc brake, significantly improving the reliability and service life of the braking system.

Description

Technical Field

[0001] This utility model relates to the field of disc brakes, and more particularly to an electric vehicle disc brake that can quickly reset. Background Technology

[0002] Existing disc brake systems for electric vehicles generally employ hydraulic or mechanical caliper structures, with their reset primarily relying on the elastic return of the piston seal or the tension of an external spring. However, this design suffers from several drawbacks: traditional disc brakes mostly use rubber rings for reset; these traditional seals have limited resilience, making them prone to aging, especially under frequent braking or high-temperature conditions, leading to incomplete separation of the brake pads from the disc, resulting in dragging braking, increased energy consumption, and wear. Based on this, we propose a disc brake for electric vehicles that allows for rapid reset. Utility Model Content

[0003] To address the technical problem of limited rebound force in traditional sealing rings, this invention provides an electric vehicle disc brake that can quickly reset.

[0004] This utility model is achieved using the following technical solution: a fast-resetting disc brake for electric vehicles, including a brake disc with heat dissipation holes on its surface and a disc brake assembly snapped onto its surface. The disc brake assembly includes a first disc brake pad and a second disc brake pad, both of which are fixedly connected to a disc brake pad support plate. A fast-resetting plate is fixedly installed between the two sets of disc brake pad support plates, and a fixing post passes through the two sets of disc brake pad support plates and the fast-resetting plate. A reset spring is sleeved on the surface of the fixing post.

[0005] The quick-reset plate has a U-shaped cross-section, and the reset spring is engaged in the U-shaped groove of the quick-reset plate. A fixing sealing ring overlaps the outer side of the disc brake pad support plate. Two sets of fixing sealing rings are provided, and the fixing sealing rings are sleeved on the surface of the mounting threaded post. A multi-stage spring post is sleeved on the surface of the mounting threaded post, and an adjustment knob is threaded to the threaded end of the mounting threaded post. A compression sleeve is connected to the outer side of the multi-stage spring post, and the adjustment knob covers the compression sleeve. The mounting threaded post passes through the adjustment knob. The disc brake assembly is located inside the fixing sleeve, and the fixing sleeve is fixed to the connecting seat.

[0006] As a further optimization of this utility model, by rotating the adjustment knob, the adjustment knob rotates on the surface of the mounting threaded column. The mounting threaded column pushes the compression sleeve to compress the multi-stage spring column, and the multi-stage spring column compresses the fixed sealing ring, increasing the initial preload. During reset, the reset spring simultaneously provides compression force. While the two sets of disc brake pads are reset, the compressed reset spring quickly rebounds, performing rapid reset. Since the fixed sealing ring overlaps and is compressed on the surface of the first disc brake pad, when the first disc brake pad rebounds, the compressed and tightened fixed sealing ring buffers the rapidly rebounding first disc brake pad, ensuring that the first disc brake pad rebounds slowly and avoiding excessive reset force that causes the disc brake pad to rebound too quickly.

[0007] As a further optimization of this utility model, the multi-stage spring column is a tower-shaped spring. When the multi-stage spring column is compressed, each coil of the spring can be nested layer by layer, eventually being completely flattened, occupying little space. The return spring is compressed on the fixed column, storing elastic potential energy.

[0008] As a further optimization of this utility model, the fixing sealing rings are stacked together, and the fixing sealing rings are made of rubber. The elasticity of the rubber of the fixing sealing rings further absorbs vibration and prevents overshoot during reset.

[0009] As a further optimization of this utility model, the reset spring pushes the quick reset plate to move outward, causing the disc brake pad support plate and the first and second disc brake pads to disengage from the brake disc.

[0010] As a further optimization of this utility model, the first disc brake pad and the second disc brake pad engage on the surface of the brake disc. When the rider squeezes the brake lever, the brake fluid pushes the first and second disc brake pads in the disc brake assembly to clamp against the brake disc, generating friction to slow down the vehicle.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model utilizes the synergistic effect of two springs, with the return spring and the tower-shaped multi-stage spring column jointly providing the rebound force, ensuring that the disc brake pads quickly detach from the brake disc after the brake is released, thus avoiding the dragging phenomenon caused by insufficient reset of the traditional sealing ring.

[0013] 2. This utility model features multi-stage spring columns that can be completely nested layer by layer during compression, resulting in a flattened height that is only 60% of that of traditional cylindrical springs, making it particularly suitable for the narrow wheel hub space of electric vehicles. The quick-reset plate and support plate are integrated into one unit, reducing additional space occupation.

[0014] 3. This utility model allows for flexible adjustment of the initial preload of the multi-stage spring column by rotating the adjustment knob, which buffers the rapidly rebounding first disc brake pad, ensuring that the first disc brake pad rebounds slowly and avoiding excessive reset force that causes the disc brake pad to rebound too quickly.

[0015] 4. This utility model absorbs vibration through a superimposed fixed sealing ring, reducing collision noise between the brake pads and the disc, and the progressive unfolding characteristic of the tower-shaped spring avoids the impact feeling during reset. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure of the disc brake assembly of this utility model;

[0018] Figure 3 This utility model Figure 2 Diagram of the split state of the middle structure;

[0019] Figure 4 This utility model Figure 3 Diagram of the split state of the middle structure;

[0020] Figure 5 This utility model Figure 4 Diagram showing the split state of the middle structure.

[0021] Explanation of key symbols:

[0022] 1. Brake disc; 2. Heat dissipation vent; 3. Disc brake assembly; 31. First disc brake pad; 32. Second disc brake pad; 33. Disc brake pad support plate; 34. Fixing post; 35. Quick reset plate; 36. Reset spring; 37. Fixing seal ring; 38. Mounting threaded post; 39. Multi-stage spring post; 310. Compression sleeve; 311. Adjustment knob. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example 1:

[0025] Please combine Figures 1-5 This embodiment proposes a fast-reset disc brake for electric vehicles, including a brake disc 1. The surface of the brake disc 1 is provided with heat dissipation holes 2. A disc brake assembly 3 is snapped onto the surface of the brake disc 1. The disc brake assembly 3 includes a first disc brake pad 31 and a second disc brake pad 32. Disc brake pad support plates 33 are fixedly connected to both the first disc brake pad 31 and the second disc brake pad 32. A fast-reset plate 35 is fixedly installed between the two sets of disc brake pad support plates 33. A fixing post 34 passes through the two sets of disc brake pad support plates 33 and the fast-reset plate 35. A reset spring 36 is sleeved on the surface of the fixing post 34.

[0026] More specifically, the return spring 36 pushes the quick return plate 35 to move outward, causing the disc brake pad support plate 33 and the first disc brake pad 31 and the second disc brake pad 32 to disengage from the brake disc 1.

[0027] It should be noted that the first disc brake pad 31 and the second disc brake pad 32 engage with the surface of the brake disc 1. When the rider squeezes the brake lever, the brake fluid pushes the first disc brake pad 31 and the second disc brake pad 32 in the disc brake assembly 3 to clamp against the brake disc 1, generating friction to slow down the vehicle.

[0028] The quick reset plate 35 has a U-shaped cross section, and the reset spring 36 is engaged in the U-shaped slot of the quick reset plate 35.

[0029] A fixing sealing ring 37 overlaps on the outer side of the disc brake pad support plate 33. Two sets of fixing sealing rings 37 are provided. The fixing sealing ring 37 is sleeved on the surface of the mounting threaded post 38. A multi-stage spring post 39 is sleeved on the surface of the mounting threaded post 38. An adjustment knob 311 is threadedly connected to the threaded end of the mounting threaded post 38. A compression sleeve 310 is connected to the outer side of the multi-stage spring post 39. The adjustment knob 311 covers the compression sleeve 310. The mounting threaded post 38 passes through the adjustment knob 311. The disc brake assembly 3 is located inside the fixing sleeve 4. The fixing sleeve 4 is fixed on the connecting seat 5. The fixing sealing ring 37 can slide inside the fixing sleeve 4.

[0030] Specifically, when using this electric vehicle disc brake, the disc brake is installed on the electric vehicle via the connecting seat 5. The end of the mounting threaded post 38 is installed on the electric vehicle. By rotating the adjustment knob 311, the adjustment knob 311 rotates on the surface of the mounting threaded post 38. The adjustment knob 311 pushes the compression sleeve 310 to compress the multi-stage spring post 39. The multi-stage spring post 39 compresses the fixing sealing ring 37, increasing the initial preload on the disc brake pad support plate 33. During reset, the reset spring 36 simultaneously provides compression force. While both sets of disc brake pads are reset, the compressed reset spring 36 quickly rebounds, performing a rapid reset. Since the fixing sealing ring 37 overlaps and compresses the surface of the first disc brake pad 31, when the first disc brake pad 31 rebounds, the compressed and tightened fixing sealing ring 27 buffers the rapidly rebounding first disc brake pad 31, ensuring that the first disc brake pad 31 rebounds slowly and avoiding excessive reset force that causes the disc brake pad to rebound too quickly.

[0031] Preferably, the fixing sealing rings 37 are stacked together, and the fixing sealing rings 37 are made of rubber. The elasticity of the rubber of the fixing sealing rings 37 further absorbs vibration and prevents reset overshoot.

[0032] Furthermore, the multi-stage spring column 39 is a tower-shaped spring. When the multi-stage spring column 39 is compressed, each coil of the spring can be nested layer by layer until it is completely flattened, occupying little space. The return spring 36 is compressed on the fixed column 34, storing elastic potential energy.

[0033] Specific implementation steps of this utility model:

[0034] 1. Braking process

[0035] When the rider squeezes the brake lever, the brake fluid pushes the first disc brake pad 31 and the second disc brake pad 32 in the disc brake assembly 3 to clamp against the brake disc 1, generating friction to slow down the vehicle.

[0036] Spring compression: The return spring 36 is compressed on the fixed post 34, storing elastic potential energy. The multi-stage spring post 39 is a tower-shaped spring, which is compressed by the compression sleeve 310, and shrinks layer by layer, occupying minimal space.

[0037] 2. Reset process

[0038] When the brake lever is released, the hydraulic pressure is released, and the first disc brake pad 31 and the second disc brake pad 32 lose their clamping force.

[0039] Spring-assisted rebound reset:

[0040] The reset spring 36 pushes the quick reset plate 35 to move outward, causing the disc brake pad support plate 33 and the first disc brake pad 31 and the second disc brake pad 32 to disengage from the brake disc 1.

[0041] Sealing ring buffer: The rubber elasticity of the fixed sealing ring 37 further absorbs vibration and prevents reset overshoot.

[0042] 3. Preload adjustment and protection mechanism

[0043] By rotating the adjustment knob 311, the adjustment knob 311 rotates on the surface of the mounting threaded post 38. The mounting threaded post 38 pushes the compression sleeve 310 to compress the multi-stage spring post 39. The multi-stage spring post 39 compresses the fixing seal ring 37, increasing the initial preload. At the same time, it can assist the brake fluid in pushing the first disc brake pad 31 to brake, improving the braking sensitivity. During the reset, the reset spring 36 provides compression force. While both sets of disc brake pads are reset, the compressed reset spring 36 quickly rebounds, performing a rapid reset. Since the fixing seal ring 37 overlaps and is compressed on the surface of the first disc brake pad 31, when the first disc brake pad 31 rebounds, the compressed and tightened fixing seal ring 27 buffers the rapidly rebounding first disc brake pad 31, ensuring that the first disc brake pad 31 rebounds slowly and avoiding excessive reset force that causes the disc brake pad to rebound too quickly.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A disc brake for an electric vehicle capable of quick reset, characterized in that, The system includes a brake disc (1), the surface of which is provided with heat dissipation holes (2), and a disc brake assembly (3) is snapped onto the surface of the brake disc (1). The disc brake assembly (3) includes a first disc brake pad (31) and a second disc brake pad (32). Disc brake pad support plates (33) are fixedly connected to both the first disc brake pad (31) and the second disc brake pad (32). A quick reset plate (35) is fixedly installed between the two sets of disc brake pad support plates (33). A fixing post (34) passes through the two sets of disc brake pad support plates (33) and the quick reset plate (35). A reset spring (36) is sleeved on the surface of the fixing post (34). The disc brake pad support plate (31) is fixedly connected to the surface of the brake disc (1) and the disc brake pad support plate (32) is fixedly connected to the surface of the brake disc (1). 3) The outer side is covered with a fixed sealing ring (37). There are two sets of fixed sealing rings (37). The fixed sealing ring (37) is sleeved on the surface of the mounting threaded column (38). The surface of the mounting threaded column (38) is covered with a multi-stage spring column (39). The threaded end of the mounting threaded column (38) is threaded with an adjustment knob (311). The outer side of the multi-stage spring column (39) is connected with a compression sleeve (310). The adjustment knob (311) covers the compression sleeve (310). The multi-stage spring column (39) is a tower-shaped spring. When the multi-stage spring column (39) is compressed, each turn of the spring can be nested layer by layer, and finally completely flattened, occupying little space.

2. The electric vehicle disc brake capable of quick reset according to claim 1, characterized in that, The quick reset plate (35) has a U-shaped cross section, and the reset spring (36) is engaged in the U-shaped slot of the quick reset plate (35).

3. The electric vehicle disc brake capable of quick reset according to claim 1, characterized in that, The first disc brake pad (31) and the second disc brake pad (32) engage on the surface of the brake disc (1).

4. The electric vehicle disc brake capable of quick reset according to claim 1, characterized in that, The fixed sealing rings (37) are stacked together, and the fixed sealing rings (37) are made of rubber.

5. The electric vehicle disc brake capable of quick reset according to claim 3, characterized in that, The mounting threaded post (38) passes through the adjustment knob (311), the disc brake assembly (3) is located inside the fixing sleeve (4), and the fixing sleeve (4) is fixed on the connecting seat (5).

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