A brake disc with a guard and method

Abstract

The application discloses a brake disc with a protection device and a method, and the brake disc with the protection device comprises a protection cover, a brake disc, a brake caliper and a brake caliper support; the protection cover is installed outside the brake disc and the brake caliper, and is positioned by a first characteristic surface, a second characteristic surface and a third characteristic surface of the brake caliper support and a characteristic surface of the brake caliper; the first characteristic surface of the brake caliper support positions the protection cover in the circumferential direction, the second characteristic surface of the brake caliper support positions the protection cover in the radial direction, and the third characteristic surface of the brake caliper support and the characteristic surface of the brake caliper position the protection cover in the axial direction; the three characteristic surfaces on the brake caliper support and the characteristic surface on the brake caliper are used for realizing the positioning of the protection cover in the circumferential direction, the radial direction and the axial direction during installation, realizing reliable positioning of the protection cover of the brake disc, and realizing protection of the brake disc at low cost and easily.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and more specifically to a brake disc with a protective device and a method thereof. Background Technology

[0002] The brake disc, also known as a disc rotor, is an important part of a disc braking system and rotates along with the wheel. Most modern vehicles are equipped with cast iron (H250) brake discs. The brake caliper clamps the brake disc to generate braking force; when the brake is applied, it is the caliper that clamps the brake disc to slow down or stop the vehicle.

[0003] The friction surfaces of cast iron brake discs and brake pads are typically untreated for corrosion. This means that after vehicle production, during transport (especially by sea) or prolonged storage, these friction surfaces can develop severe corrosion, leading to braking noise or vibration issues. Existing technologies include applying protective films to the wheels to slow down brake disc corrosion, but the protective effect is not ideal. Adding protective covers to the brake discs is also an option, but unreliable assembly can cause interference problems during dynamic road testing after the vehicle rolls off the production line. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a brake disc and method with a protective device, which can solve the assembly and positioning problems of the existing brake disc protective cover, making the assembly and positioning of the brake disc protective cover reliable, realizing the protection of the brake disc, and preventing the brake disc from rusting.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the invention, a brake disc with a protective device is provided, comprising a protective cover, a brake disc, a brake caliper, and a brake caliper bracket; the protective cover is installed outside the brake disc and the brake caliper, and is positioned by a first feature surface, a second feature surface, and a third feature surface of the brake caliper bracket, and a feature surface of the brake caliper; the first feature surface of the brake caliper bracket provides circumferential positioning of the protective cover, the second feature surface of the brake caliper bracket provides radial positioning of the protective cover, and the third feature surface of the brake caliper bracket and the feature surface of the brake caliper provide axial positioning of the protective cover.

[0007] In some embodiments of the present invention, the first characteristic surface of the brake caliper bracket is the outermost vertical surface of the brake caliper bracket in the circumferential direction of the brake disc.

[0008] In some embodiments of the present invention, the second characteristic surface of the brake caliper bracket is the horizontal surface of the brake caliper bracket located on the outermost side in the circumferential direction of the brake disc, and the vertical surface and the horizontal surface are connected and perpendicular to each other.

[0009] In some embodiments of the present invention, the third characteristic surface of the brake caliper bracket is a plane of the brake caliper bracket used for mounting the brake caliper in the axial direction of the brake disc.

[0010] In some embodiments of the present invention, the protective cover is provided with a positioning card, which is engaged with the third feature surface of the brake caliper bracket.

[0011] In some embodiments of the present invention, the characteristic surface of the brake caliper is the innermost side of the brake caliper closest to the wheel hub.

[0012] In some embodiments of the present invention, the brake caliper is mounted on the steering knuckle via a brake bracket, and the brake caliper bracket and the steering knuckle do not move relative to each other during braking.

[0013] In some embodiments of the present invention, a mudguard is also included, which is disposed on the outer periphery of the brake disc, and the outer periphery of the protective cover is further supported by the mudguard.

[0014] In some embodiments of the present invention, the protective cover is a thin shell made of plastic, and a certain gap is maintained between the protective cover and the caliper body of the brake caliper and the disc cap of the brake disc.

[0015] In a second aspect of the invention, a method for assembling a brake disc with a protective device is provided, comprising the following steps:

[0016] The protective cover is attached to the first and second feature surfaces of the brake caliper bracket to perform circumferential and radial positioning. Then, the positioning clip on the protective cover is engaged with the third feature surface of the brake caliper bracket to perform axial positioning of the protective cover in conjunction with the feature surface of the brake caliper.

[0017] Furthermore, the inner circumferential wall of the protective cover is fitted with the mudguard, using the mudguard as an auxiliary support.

[0018] One or more technical solutions of the present invention have the following beneficial effects:

[0019] The brake disc with a protective device provided by this invention can protect the brake disc during vehicle transportation or long-term storage by setting up a protective cover, preventing corrosion of the friction working surface of the brake disc. When installing the protective cover, the three feature surfaces on the brake caliper bracket and the feature surfaces on the brake caliper are used to achieve the positioning of the protective cover in three directions: circumferential, radial, and axial. At the same time, the mudguard provides auxiliary support for the protective cover. This brake disc structure does not require changes to the existing brake structure. Reliable positioning of the brake disc protective cover is achieved by utilizing the structure of the brake caliper and mudguard, resulting in low cost and easy implementation of brake disc protection.

[0020] The assembly method provided by this invention is simple to implement, does not require changes to the original structure of the brake, can solve the problem of unreliable assembly of existing protective covers, and avoids the problem of abnormal interference of the protective cover to the vehicle during dynamic road testing after it rolls off the production line. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the brake disc with protective device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the brake disc with protective device of the present invention after the protective cover has been removed;

[0023] Figure 3 This is a schematic diagram showing the position of the feature surfaces on the brake caliper bracket of the present invention;

[0024] Figure 4 This is a schematic diagram showing the position of the feature surface on the brake caliper of the present invention;

[0025] Figure 5 for Figure 4 Enlarged image in the image;

[0026] Figure 6 This is a schematic diagram of the brake disc with protective device of the present invention from another angle.

[0027] In the diagram: 1. Protective cover; 2. Brake caliper; 3. Brake caliper bracket; 4. Mudguard; 5. Brake disc; 6. Steering knuckle; 7. First feature surface; 8. Second feature surface; 9. Feature surface of brake caliper; 10. Positioning clip; 11. Third feature surface; 12. Clearance. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] In this embodiment, the brake disc 5, brake caliper 2, and brake caliper bracket 3 are all existing structures and are assembled according to existing assembly methods. After the brake is assembled on the vehicle, the brake disc 5 can rotate around the central axis when the vehicle is in motion. When braking is applied, the caliper body of the brake caliper 2 can move along the circumference of the brake disc. Therefore, when installing the protective cover on the brake disc 5, the brake disc protective cover cannot contact the brake disc 5 and the caliper body of the brake caliper 2 and needs to maintain a certain gap. This requires the protective cover 1 to be reliably positioned when assembled on the brake. Otherwise, interference noise will occur during dynamic road tests. However, the existing protective cover cannot achieve reliable positioning, resulting in unreliable assembly of the protective cover.

[0031] To address the existing technical problems, a typical embodiment of the present invention proposes a brake disc with a protective device, such as... Figure 1As shown, the device includes a protective cover 1, a brake disc 5, a brake caliper 2, and a brake caliper bracket 3. The protective cover 1 is installed outside the brake disc 5 and the brake caliper 2, and is positioned by the first feature surface 7, the second feature surface 8, and the third feature surface 11 of the brake caliper bracket, as well as the feature surface 9 of the brake caliper. The first feature surface 7 of the brake caliper bracket 3 provides circumferential positioning for the protective cover 1, the second feature surface 8 of the brake caliper bracket 3 provides radial positioning for the protective cover 1, and the third feature surface 11 of the brake caliper bracket 3 and the feature surface 9 of the brake caliper provide axial positioning for the protective cover 1.

[0032] In this embodiment, the first feature surface 7 of the brake caliper bracket 3 is the outermost vertical surface of the brake caliper bracket in the circumferential direction of the brake disc, and the second feature surface 8 of the brake caliper bracket 3 is the outermost horizontal surface of the brake caliper bracket in the circumferential direction of the brake disc. The vertical surface and the horizontal surface are connected and perpendicular to each other.

[0033] Furthermore, the third feature surface 11 of the brake caliper bracket 3 is a plane on the brake caliper bracket 3 in the axial direction of the brake disc for mounting the brake caliper 2. A positioning clip 10 is provided on the protective cover 1, and the positioning clip 10 is engaged with the third feature surface 11 of the brake caliper bracket. The feature surface 9 of the brake caliper is the innermost side of the brake caliper 2 closest to the wheel hub.

[0034] In this embodiment, the side of the brake disc 5 closest to the wheel hub is the inner side, and the side of the brake disc 5 furthest from the wheel hub is the outer side. The third feature surface 11 of the brake caliper bracket 3 is the outer side of the brake caliper bracket 3, i.e. the surface used to install the brake caliper. The feature surface 9 of the brake caliper is the innermost side of the brake caliper, located between the brake disc and the wheel hub. The protective cover 1 is installed on the inner side of the brake disc.

[0035] In this embodiment, the brake caliper 2 is mounted on the steering knuckle 6 via the brake caliper bracket 3. During braking, the brake bracket and the steering knuckle do not move relative to each other. Therefore, the first feature surface 7 of the brake caliper bracket is used as the circumferential positioning surface for the protective cover 1 to be mounted on the brake, preventing the protective cover 1 from rotating around the central axis of the brake disc. The second feature surface 8 of the brake caliper bracket 3 is used as the radial positioning surface for the protective cover 1 to be mounted on the brake, preventing the protective cover 1 from moving in the radial direction of the brake disc and avoiding the protective cover 1 from affecting the rotation of the brake disc. The third feature surface 11 of the brake caliper bracket 3 and the feature surface 9 of the brake caliper are used as the axial positioning surfaces for the protective cover 1 to be mounted on the brake, preventing the protective cover 1 from detaching from the brake disc. By positioning the protective cover 1 in the circumferential, radial, and axial directions, reliable positioning of the protective cover is achieved, avoiding any impact on the dynamic road test of the vehicle.

[0036] In this embodiment, a mudguard 4 is also included. The mudguard 4 is disposed on the outer periphery of the brake disc 5. Generally, the outer diameter of the mudguard is larger than that of the brake disc. The outer periphery of the protective cover 1 is further supported by the mudguard 4 to prevent interference between the protective cover 1 and the brake disc 5.

[0037] In this embodiment, the protective cover 1 is a thin shell made of plastic. A certain gap 12 is maintained between the protective cover 1 and the caliper body of the brake caliper and the disc cap of the brake disc. The protective cover 1 is configured to match the inner wall surface of the brake disc, brake caliper and brake caliper bracket after assembly.

[0038] In this embodiment, the protective cover 1 only serves as temporary protection during vehicle transportation or long-term storage. Since the protective cover is made of a thin plastic shell, it can be easily torn by hand. As a disposable protective item, the protective cover is removed from the brake before the vehicle is delivered to the customer.

[0039] The brake disc with protective device provided in this embodiment can protect the brake disc during vehicle transportation or long-term storage by setting up a protective cover, preventing corrosion of the friction working surface of the brake disc. When installing the protective cover, the three feature surfaces on the brake caliper bracket and the feature surfaces on the brake caliper are used to achieve the positioning of the protective cover in three directions: circumferential, radial, and axial. At the same time, the mudguard provides auxiliary support for the protective cover. This brake disc structure does not require changes to the existing brake structure. Reliable positioning of the brake disc protective cover is achieved by utilizing the structure of the brake caliper and mudguard, resulting in low cost and easy implementation of brake disc protection.

[0040] Example 2

[0041] In a typical embodiment of the present invention, a method for assembling a brake disc with a protective device is provided, comprising the following steps:

[0042] The protective cover is attached to the first and second feature surfaces of the brake caliper bracket to perform circumferential and radial positioning. Then, the positioning clip on the protective cover is engaged with the third feature surface of the brake caliper bracket to perform axial positioning of the protective cover in conjunction with the feature surface of the brake caliper.

[0043] Furthermore, the inner circumferential wall of the protective cover fits into the mudguard, using the mudguard as an auxiliary support. The protective cover is positioned in the circumferential, radial, and axial directions during installation via three feature surfaces on the brake caliper bracket and the brake caliper itself. Simultaneously, the mudguard provides auxiliary support for the protective cover. This assembly method is simple to implement, requires no alteration to the original brake structure, solves the problem of unreliable assembly of existing protective covers, and avoids interference issues during dynamic road testing of the vehicle after it rolls off the production line.

[0044] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A brake disc with a protective device, characterized in that, The system includes a protective cover, a brake disc, a brake caliper, and a brake caliper bracket. The brake caliper is mounted on the steering knuckle via the brake bracket, and the brake caliper bracket and the steering knuckle do not move relative to each other during braking. The protective cover is installed outside the brake disc and brake caliper, and is positioned by the first, second, and third feature surfaces of the brake caliper bracket and the feature surface of the brake caliper. The first feature surface of the brake caliper bracket provides circumferential positioning of the protective cover, the second feature surface of the brake caliper bracket provides radial positioning of the protective cover, and the third feature surface of the brake caliper bracket and the feature surface of the brake caliper provide axial positioning of the protective cover. The protective cover is provided with a positioning card, which is engaged with the third feature surface of the brake caliper bracket; It also includes mudguards, which are disposed on the outer periphery of the brake disc, and the outer periphery of the protective cover is further supported by the mudguards.

2. The brake disc with a protective device as described in claim 1, characterized in that, The first characteristic surface of the brake caliper bracket is the outermost vertical surface of the brake caliper bracket in the circumferential direction of the brake disc.

3. The brake disc with a protective device as described in claim 2, characterized in that, The second characteristic surface of the brake caliper bracket is the horizontal surface of the brake caliper bracket located on the outermost side in the circumferential direction of the brake disc, and the vertical surface and the horizontal surface are connected and perpendicular to each other.

4. The brake disc with a protective device as described in claim 1, characterized in that, The third characteristic surface of the brake caliper bracket is the plane on the brake caliper bracket used for mounting the brake caliper in the axial direction of the brake disc.

5. The brake disc with a protective device as described in claim 1, characterized in that, The characteristic surface of the brake caliper is the innermost side of the brake caliper closest to the wheel hub.

6. The brake disc with a protective device as described in claim 1, characterized in that, The protective cover is a thin plastic shell, and a certain gap is maintained between the protective cover and the caliper body and the disc cap of the brake disc.

7. A method for assembling a brake disc with a protective device as described in any one of claims 1-6, characterized in that, Includes the following steps: The protective cover is attached to the first and second feature surfaces of the brake caliper bracket to perform circumferential and radial positioning. Then, the positioning clip on the protective cover is engaged with the third feature surface of the brake caliper bracket to perform axial positioning of the protective cover in conjunction with the feature surface of the brake caliper. Furthermore, the inner circumferential wall of the protective cover is fitted with the mudguard, using the mudguard as an auxiliary support.

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