Disc brake suitable for hub motor

Abstract

The utility model discloses a disc brake suitable for a hub motor, which comprises a brake disc, a support, a caliper body, a piston and a friction block, and the brake disc is fixedly connected with a shell of the hub motor; the bracket is mounted on the vehicle body; the caliper body comprises a caliper cylinder and a caliper back which are detachably and fixedly connected, and the caliper cylinder is slidably connected with the support. The piston is installed on the caliper cylinder, and the moving end of the piston faces the brake disc. The friction blocks comprise the outer friction block and the inner friction block, the outer friction block is arranged on the inner side of the brake disc and fixedly connected with the caliper back, and the inner friction block is arranged on the outer side of the brake disc and fixedly connected with the moving end of the piston. Compared with the prior art, the disc brake has the advantages that the caliper body is reversely mounted on the brake disc, the internal space of the brake disc can be fully utilized, a hub motor can be conveniently arranged, the brake can be conveniently arranged, the caliper cylinder and the caliper back can be detached during maintenance due to the split structure of the caliper body, and the brake pad can be conveniently replaced.

Description

Technical Field

[0001] This utility model relates to the field of brakes, specifically to a disc brake suitable for hub motors. Background Technology

[0002] As the popularity of new energy vehicles increases, their various configurations are also rapidly developing, including in-wheel motors. In-wheel motors are designed to integrate the vehicle's powertrain, transmission, and braking systems. The advantages of in-wheel motors include: simplifying the vehicle structure by eliminating many transmission components; and enabling various complex drive modes. Because in-wheel motors allow for independent drive of each wheel, front-wheel drive, rear-wheel drive, and four-wheel drive configurations can be easily implemented, making full-time four-wheel drive very easy to achieve in vehicles driven by in-wheel motors.

[0003] Since the hub motor places the drive motor on the hub, it occupies the already limited space inside the hub, making the space inside the hub even more cramped. This also makes it more difficult to inspect the brakes and replace brake pads during subsequent maintenance and repairs of the car. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a disc brake suitable for hub motors, thereby solving the technical problem that it is inconvenient to inspect and repair the brakes of automobiles using hub motors in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a disc brake suitable for hub motors, comprising: a brake disc, which is fixedly connected to the housing of the hub motor; a bracket, which is mounted on the vehicle body; a caliper body, which includes a detachably fixedly connected caliper cylinder and a caliper back, the caliper cylinder being slidably connected to the bracket; a piston, which is mounted on the caliper cylinder, with the moving end of the piston facing the brake disc; and a friction block, which includes an outer friction block and an inner friction block, the outer friction block being arranged on the inner side of the brake disc and fixedly connected to the caliper back, and the inner friction block being arranged on the outer side of the brake disc and fixedly connected to the moving end of the piston.

[0007] In some embodiments, a guide pin is also included, a through hole is formed on the bracket, the clamp cylinder is fixedly connected to the guide pin, and the guide pin passes through the through hole and is slidably connected to the through hole.

[0008] In some embodiments, the bracket has two through holes symmetrical about the piston, and the clamp cylinder is fixedly connected to the two guide pins.

[0009] In some embodiments, a first reed is also included, which is fixedly connected to the internal friction block and the clamp back.

[0010] In some embodiments, two first reeds are included, which are arranged symmetrically about the piston.

[0011] In some embodiments, a second spring is also included, which is fixedly connected to the clamp back and the bracket.

[0012] In some embodiments, two second reeds are included, which are arranged symmetrically about the piston.

[0013] In some embodiments, the caliper cylinder and the caliper back are detachably connected by bolts, and the brake disc and the hub motor housing are detachably connected by bolts.

[0014] In some embodiments, the brake disc is a silicon carbide ceramic brake disc.

[0015] In some embodiments, the caliper body is an aluminum alloy caliper body.

[0016] Compared with the prior art, the disc brake for hub motors provided by this utility model has the caliper body installed in reverse on the brake disc, which can make full use of the internal space of the brake disc, facilitate the arrangement of the hub motor and the brake. At the same time, the caliper body adopts a split structure, consisting of a caliper cylinder and a caliper back, which can be disassembled during maintenance to facilitate the replacement of brake pads. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a disc brake suitable for a hub motor provided in an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of a disc brake suitable for a hub motor provided in an embodiment of this utility model;

[0019] Figure 3 yes Figure 1 A partial structural diagram. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] To address the technical problem of inconvenient brake maintenance in automobiles using hub motors, this invention provides a disc brake suitable for hub motors, enabling quick disassembly, assembly, replacement, and maintenance of the brake.

[0022] Please see Figures 1 to 3This disc brake, applicable to hub motors, includes: brake disc 1, bracket 2, caliper body 3, piston 4, and friction block 5.

[0023] The brake disc 1 is fixedly connected to the housing of the hub motor 9, and the bracket 2 is mounted on the vehicle body. The caliper body 3 includes a detachably fixedly connected caliper cylinder 31 and caliper back 32, and the caliper cylinder 31 is slidably connected to the bracket 2. The piston 4 is mounted on the caliper cylinder 31, and the moving end of the piston 4 faces the brake disc 1. The friction block 5 includes an outer friction block 51 and an inner friction block 52. The outer friction block 51 is arranged on the inner side of the brake disc 1 and fixedly connected to the caliper back 32, and the inner friction block 52 is arranged on the outer side of the brake disc 1 and fixedly connected to the moving end of the piston 4.

[0024] The caliper body 3 of this disc brake is installed in reverse. In a conventional disc brake, the outer friction block is located on the outer side of the brake disc, and the inner friction block is located on the inner side. However, in this disc brake, the outer friction block 51 is located on the inner side of the brake disc 1, and the inner friction block 52 is located on the outer side of the brake disc 1. This arrangement fully utilizes the internal space of the brake disc 1, facilitating both the arrangement of the hub motor and the brake itself. Furthermore, the caliper body 3 adopts a split structure, consisting of a caliper cylinder 31 and a caliper back 32. During maintenance, the caliper cylinder and caliper back can be disassembled, allowing for easy replacement of the brake pads, i.e., the friction blocks 5.

[0025] In some embodiments, the brake disc 1 is a silicon carbide ceramic brake disc. Compared to conventional HT250 material brake discs, it reduces overall weight by 60% and is more wear-resistant and heat-resistant. This helps reduce the overall vehicle weight, especially the unsprung weight, mitigating the problem of high unsprung mass caused by the hub motor and improving vehicle performance. The brake disc 1 and the hub motor 9 housing are detachably connected by bolts for easy installation and removal.

[0026] In some embodiments, a through hole is formed on the bracket 2, and the disc brake also includes a guide pin 6. The caliper cylinder 2 is fixedly connected to the guide pin 6, and the guide pin 6 passes through the through hole and is slidably connected to the through hole.

[0027] In this embodiment, the bracket 2 has two through holes symmetrical about the piston 4, and the clamp cylinder 2 is fixedly connected to the two guide pins 6. This ensures that the guide pins 6 are subjected to balanced forces when sliding relative to the bracket 2, reducing wear and preventing jamming.

[0028] In some embodiments, the caliper body 3 is an aluminum alloy caliper body, which reduces weight by 60% compared to conventional cast iron materials. This helps reduce the overall vehicle weight, especially the unsprung weight, mitigating the problem of high unsprung mass caused by hub motors and improving vehicle performance. The caliper cylinder 31 and the caliper back 32 are detachably connected by bolts for easy installation and removal.

[0029] Piston 4 is connected to the oil supply pipe of the braking system. The piston 4 is hydraulically driven by the brake oil to move the outer friction block 51 and the inner friction block 52, which clamp the brake disc 1 to generate braking.

[0030] In some embodiments, the disc brake further includes a first spring 7, which is fixedly connected to the inner friction block 52 and the caliper back 31. During braking, the first spring 7 is stretched, generating elastic force. After the brake is released, the elastic force of the first spring 7 helps the inner friction block 52 return to its original position quickly, reducing brake drag and potentially increasing the range of new energy vehicles.

[0031] In this embodiment, there are two first spring plates 7, which are symmetrically arranged about the piston 4. Similar to the guide pin 6, the symmetrical arrangement of the first spring plates 7 can balance the forces on the internal friction block 52 and prevent the movement trajectory from deviating.

[0032] In some embodiments, the disc brake further includes a second spring 8, which is fixedly connected to the caliper back 32 and the bracket 2. Similar to the first spring 7, the second spring 8 can also cause the outer friction block 51 to return quickly after the brake is released, reducing brake drag and increasing the range of new energy vehicles.

[0033] In this embodiment, there are also two second springs 8, which are arranged symmetrically about the piston 4.

[0034] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0035] During braking, brake fluid flows into piston 4, which pushes the inner friction block 52 toward the brake disc 1. After the inner friction block 52 contacts the brake disc 1, it pushes the caliper cylinder 31 away from the brake disc 1, thereby causing the caliper back 32 and the outer friction block 51 to move toward the brake disc 1. The inner friction block 52 and the outer friction block 51 cooperate to clamp the brake disc 1, generating braking.

[0036] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A disc brake suitable for hub motors, characterized in that, include: Brake disc, which is fixedly connected to the housing of hub motor; A bracket, which is mounted on the vehicle body; The caliper body includes a detachably fixedly connected caliper cylinder and a caliper back, wherein the caliper cylinder is slidably connected to the bracket; A piston, which is mounted on the caliper cylinder, with the moving end of the piston facing the brake disc; The friction block includes an outer friction block and an inner friction block. The outer friction block is arranged on the inner side of the brake disc and fixedly connected to the caliper back. The inner friction block is arranged on the outer side of the brake disc and fixedly connected to the moving end of the piston.

2. The disc brake for hub motors according to claim 1, characterized in that, It also includes a guide pin, a through hole is formed on the bracket, the clamp cylinder is fixedly connected to the guide pin, and the guide pin passes through the through hole and is slidably connected to the through hole.

3. The disc brake for a hub motor according to claim 2, characterized in that, The bracket has two through holes symmetrical about the piston, and the clamp cylinder is fixedly connected to the two guide pins.

4. The disc brake for a hub motor according to claim 1, characterized in that, It also includes a first spring, which is fixedly connected to the internal friction block and the clamp back.

5. The disc brake for a hub motor according to claim 4, characterized in that, It includes two first reeds, which are arranged symmetrically about the piston.

6. The disc brake for a hub motor according to claim 1, characterized in that, It also includes a second spring, which is fixedly connected to the clamp back and the bracket.

7. The disc brake for a hub motor according to claim 6, characterized in that, It includes two second reeds, which are arranged symmetrically about the piston.

8. The disc brake for a hub motor according to claim 1, characterized in that, The caliper cylinder and the caliper back are detachably connected by bolts, and the brake disc and the housing of the hub motor are detachably connected by bolts.

9. The disc brake for a hub motor according to claim 1, characterized in that, The brake disc is a silicon carbide ceramic brake disc.

10. The disc brake for a hub motor according to claim 1, characterized in that, The caliper body is made of aluminum alloy.

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