A central parking brake

Abstract

The application relates to the brake field and discloses a central parking brake, which comprises a caliper body (1), the caliper body (1) is provided with an assembly groove (2) for mounting a brake block (4), the bottom of the assembly groove (2) is provided with a mounting groove (3) for fixing and mounting a magnet (5), and the brake block (4) and the magnet (5) are further included; the brake block (4) is in clearance fit with the assembly groove (2), the magnet (5) is fixedly mounted in the mounting groove (3), and the brake block (4) is at least partially made of a magnetic material. The brake has the advantages of reliable braking and avoidance of dragging and grinding.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of parking brake, in particular to a central parking brake. BACKGROUND

[0002] Chinese patent CN201911190781.4 discloses a disc type electronic central parking brake assembly, which belongs to the prior art of electronic disc type parking brake. The automobile parking can be divided into wheel edge parking and central parking according to structure and position. The central parking is commonly arranged on the transmission shaft. When parking, the intermediate transmission shaft is clamped through the pull arm. The pull arm is released when not parking. The brake block is separated from the brake disc.

[0003] In the field of commercial vehicles, the wheel edge brake generally has a parking function. Especially for off-road vehicles, it is necessary to travel on bad roads and inclined roads. The vehicle has higher requirements for the ability to park on slopes. In some cases, such as on a 40% slope, the wheel edge brake cannot completely realize parking, and an auxiliary central parking disc brake needs to be added to the transmission shaft.

[0004] Since such a central parking disc brake does not have a gap adjustment function, as the gap between the brake block and the brake disc increases, the entire central parking disc brake will appear to be dragged and ground due to the ups and downs of the vehicle. SUMMARY

[0005] The present application provides a central parking brake to solve the problems in the prior art.

[0006] To solve the above technical problems, the present application solves the problems by the following technical solutions:

[0007] A central parking brake, comprising a caliper body, the caliper body is provided with an assembly groove for mounting a brake block, the bottom surface of the mounting groove is provided with a mounting groove for fixing and mounting a magnet, further comprising a brake block and a magnet, the brake block is gap fitted with the assembly groove, the magnet is fixedly installed in the mounting groove, and the brake block is at least partially made of magnetic material.

[0008] As a preferred, the bottom surface of the assembly groove is also provided with a through hole, and the through hole is distributed around the mounting groove.

[0009] As a preferred, the caliper body comprises a body and a mounting seat, the body comprises an outer brake arm and an inner brake arm, a brake area for placing a brake disc is formed between the outer brake arm and the inner brake arm, the outer brake arm is provided with an assembly opening, the mounting seat is fixedly installed in the assembly opening, and the mounting groove is provided on the mounting seat.

[0010] As a preferred, the bottom surface of the assembly groove is also provided with a through hole, and the through hole is distributed around the mounting groove.

[0011] As preferred, a retaining ring is further included, which is installed on the side of the assembling opening and limits the outside of the mounting base.

[0012] As preferred, a connecting hole for connecting with the vehicle body is further arranged on the plier body, a sliding pin is arranged in the connecting hole, the sliding pin is in clearance fit with the connecting hole, the plier body can slide relative to the sliding pin, a return spring is arranged in the connecting hole, limiting steps for limiting the return spring are arranged at two ends of the connecting hole, a supporting ring is arranged in the middle of the sliding pin, and the return spring is divided into two parts and distributed on the upper and lower sides of the supporting ring.

[0013] As preferred, the return spring is sleeved on the sliding pin, one end of the return spring abuts against the limiting step, and the other end of the return spring abuts against the supporting ring.

[0014] As preferred, the return spring is a wave spring.

[0015] As preferred, an installation slot hole is arranged at one end of the connecting hole, a limiting sleeve is installed in the installation slot hole, an inner end surface of the limiting sleeve is used for limiting the return spring at the end, and the limiting sleeve is fixedly connected with the side surface of the assembling slot.

[0016] As preferred, a sealing sleeve is further included, a first limiting slot is arranged on the upper end and the lower end limiting step of the connecting hole, a second limiting slot is arranged on the outer side surface of the upper end and the lower end of the sliding pin, the outer ring of the sealing sleeve is installed in the first limiting slot, and the inner ring of the sealing sleeve is installed in the second limiting slot.

[0017] The present application has the following remarkable technical effects due to the above technical scheme:

[0018] The present application discloses a central parking brake, which has the advantages of convenient brake pad replacement, rapid return and no dragging and grinding. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the device.

[0020] Figure 2 is Figure 1 a bottom view of

[0021] Figure 3 is Figure 2 a sectional view of

[0022] Figure 4 is Figure 2 a sectional view of

[0023] The technical names of the reference signs in the figure are: 1 - caliper body, 2 - assembly groove, 3 - mounting groove, 4 - brake block, 5 - magnet, 6 - steel back, 7 - friction plate, 8 - outer brake arm, 10 - inner brake arm, 11 - brake area, 12 - assembly opening, 13 - through hole, 14 - retaining ring, 15 - positioning step, 16 - connecting hole, 17 - sliding pin, 18 - limiting step, 19 - support ring, 20 - mounting groove hole, 21 - limiting sleeve, 22 - first limiting groove, 23 - second limiting groove. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings and examples.

[0025] Example 1

[0026] A central parking brake includes a caliper body 1, the caliper body 1 is provided with an assembly groove 2 for mounting a brake block 4, the bottom surface of the assembly groove 2 is provided with a mounting groove 3 for fixing and mounting a magnet 5, and further includes the brake block 4 and the magnet 5, the brake block 4 is clearance fitted with the assembly groove 2, the magnet 5 is fixedly mounted in the mounting groove 3, and the brake block 4 is at least partially made of magnetic material. Specifically, in this embodiment, the brake block 4 includes a steel back 6 and a friction plate 7 connected to the steel back 6, the steel back 6 is fixedly connected with the caliper body 1 under the action of the magnet 5, so as to avoid relative movement between the brake block 4 and the caliper body 1, thereby avoiding brake failure and other problems.

[0027] Due to the particularity of the structure of the central controller, the general central parking brake generally does not have a gap adjustment function, so the present scheme creatively designs the following structure. The structure includes that the bottom surface of the assembly groove 2 is further provided with a through hole 13, and the through hole 13 is distributed around the mounting groove 3. The through hole 13 can be directly communicated to the steel back 6, so that the steel back 6 can be directly separated from the adsorption of the magnet 5 by using external force through the through hole 13 on the outside, thereby facilitating the replacement of the brake block 4 or the friction plate 7.

[0028] In the present scheme, in order to reduce the processing difficulty and increase the adaptability of the entire brake, the caliper body 1 includes a body and a mounting seat 25, the body includes an outer brake arm 8 and an inner brake arm 10, a brake area 11 for placing a brake disc is formed between the outer brake arm 8 and the inner brake arm 10, the outer brake arm 8 is provided with an assembly opening 12, the mounting seat 25 is fixedly mounted in the assembly opening 12, and the mounting groove 3 is formed in the mounting seat 25. The mounting seat 25 can directly assemble the magnet 5 and the brake block 4 before assembly, so that the assembly of the brake is more simple, and the mounting seat 25 can be directly mounted in the assembly opening 12 of the caliper body 1. At the same time, this kind of design can replace brake blocks 4 of different structures and internal sizes, thereby adapting to the braking needs of different brakes.

[0029] In the embodiment, the brake further comprises a stop ring 14, which is a spring stop ring 14, and is installed on the side of the assembly opening 12 and limits the outer side of the mounting seat 25. The caliper body 1 is provided with a positioning step 15, and when the mounting shaft is assembled in the assembly opening 12, the inward direction is limited by the positioning step 15, so that the mounting seat 25 can be fixed with the caliper body 1 by limiting the mounting seat 25 from the outside.

[0030] In the embodiment, since the brake is a floating brake, the caliper body 1 is further provided with a connecting hole 16 for connecting with the vehicle body, the connecting hole 16 is provided with a sliding pin 17, the sliding pin 17 is in clearance fit with the connecting hole 16, the caliper body 1 can slide relative to the sliding pin 17, the connecting hole 16 is provided with a return spring, the two ends of the connecting hole 16 are provided with a limiting step 18 for limiting the return spring, the middle part of the sliding pin 17 is provided with a supporting ring 19, and the return spring is divided into two parts and distributed on the upper and lower sides of the supporting ring 19. The structure solves the following problems of the traditional brake: under severe working conditions, the caliper body 1 can slide relative to the sliding pin 17 without braking, especially during uphill and downhill processes, so the central brake is prone to wear and tear, and the above anti-wear design solves this industry pain point. Since the caliper body 1 can only slide axially during sliding, the two groups of return springs set in the scheme limit the movement of the caliper body 1 in two axial directions, so the caliper body 1 will not slide greatly in this case to avoid the phenomenon of dragging and wearing.

[0031] In the embodiment, the return springs are sleeved on the sliding pin 17, one end of the return spring abuts against the limiting step 18, and the other end abuts against the supporting ring 19. Specifically, in the embodiment, the upper end of the first return spring on the upper side of the supporting ring 19 is supported on the upper limiting step 18, and the lower end is supported on the upper end face of the supporting ring 19; the upper end of the second return spring on the lower side of the supporting ring 19 is supported on the lower end face of the supporting ring 19, and the lower end is supported on the lower limiting step 18.

[0032] In the embodiment, in order to have a larger rebound force in a smaller space, the return springs are all wave springs.

[0033] In the embodiment, in order to facilitate the installation of the return spring, one end of the connecting hole 16 is provided with a mounting slot hole 20, a limiting sleeve 21 is installed in the mounting slot hole 20, the inner end surface of the limiting sleeve 21 is used for limiting the return spring at the end, and the limiting sleeve 21 is fixedly connected with the side surface of the assembly slot 2. Under the structure, the installation of the slide pin 17 and the return spring is divided into the following steps: firstly, the lower end return spring is installed from the mounting slot hole 20 to the bottom of the connecting hole 16 supported by the lower end limiting step 18, then the slide pin 17 is installed in the connecting hole 16 and the lower end return spring, then the upper end return spring is sleeved on the slide pin 17, and finally the limiting sleeve 21 is fixedly installed in the mounting slot hole 20.

[0034] In the embodiment, a sealing sleeve 24 is further included, the upper end of the connecting hole 16 and the lower end limiting step 18 are both provided with a first limiting slot 22, the outer side surface of the upper end and the lower end of the slide pin 17 are both provided with a second limiting slot 23, the outer ring of the sealing sleeve 24 is installed in the first limiting slot 22, and the inner ring of the sealing sleeve 24 is installed in the second limiting slot 23. The first limiting slot 22 at the upper end is opened on the inner side surface of the limiting sleeve 21.

[0035] Embodiment 2

[0036] The difference from the embodiment 1 is that the number of the through holes 13 is four.

[0037] Embodiment 3

[0038] The difference from the embodiment 1 is that the number of the slide pins 17 is two.

Claims

1. A central parking brake characterized by: The utility model provides a brake caliper, including the body (1), the body (1) is provided with the assembly groove (2) of installing brake block (4), the bottom of assembly groove (2) is provided with the installation groove (3) for fixed installation magnet (5), still include brake block (4) and magnet (5), brake block (4) with assembly groove (2) is clearance fit, magnet (5) is fixedly installed in installation groove (3), brake block (4) is made of at least partial magnetic material; The bottom surface of the assembly groove (2) is also provided with through holes (13) distributed around the installation groove (3); The body (1) is also provided with a connecting hole (16) for connecting with a vehicle body, a slide pin (17) is arranged in the connecting hole (16), the slide pin (17) is clearance fit with the connecting hole (16), the body (1) can slide relative to the slide pin (17), a return spring is arranged in the connecting hole (16), both ends of the connecting hole (16) are provided with limiting steps (18) for limiting the return spring, a supporting ring (19) is arranged in the middle of the slide pin (17), and the return spring is divided into two parts and arranged on the upper and lower sides of the supporting ring (19).

2. A central parking brake according to claim 1, characterized in that: The body (1) includes a main body and a mounting seat (25), the main body includes an outer brake arm (8) and an inner brake arm (10), and a brake area (11) for placing a brake disc is formed between the outer brake arm (8) and the inner brake arm (10); the outer brake arm (8) is provided with an assembly opening (12), and the mounting seat (25) is fixedly installed in the assembly opening (12); and the installation groove (3) is arranged on the mounting seat (25).

3. A central parking brake according to claim 1, characterized in that: The bottom surface of the assembly groove (2) is also provided with through holes (13) distributed around the installation groove (3).

4. A central parking brake according to claim 2, characterized in that: The utility model also includes a retaining ring (14) installed on the side of the assembly opening (12) and limiting the outer side of the mounting seat (25).

5. A central parking brake according to claim 1, characterized in that: The return springs are all sleeved on the slide pin (17), one end of the return spring abuts against the limiting step (18), and the other end abuts against the supporting ring (19).

6. A central parking brake according to claim 1, characterized in that: The return spring is a wave spring.

7. A central parking brake according to claim 1, characterized in that: One end of the connecting hole (16) is provided with an installation groove hole (20), a limiting sleeve (21) is installed in the installation groove hole (20), the inner end face of the limiting sleeve (21) is used for limiting the return spring at the end, and the limiting sleeve (21) is fixedly connected with the side of the assembly groove (2).

8. A central parking brake according to claim 1, characterized in that: The utility model also includes a sealing sleeve (24), the upper end of the connecting hole (16) and the limiting step (18) at the lower end are both provided with a first limiting groove (22), the upper end and the lower end of the outer side of the slide pin (17) are both provided with a second limiting groove (23), the outer ring of the sealing sleeve (24) is installed in the first limiting groove (22), and the inner ring of the sealing sleeve (24) is installed in the second limiting groove (23).

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