Brake assembly

Abstract

The utility model discloses a brake assembly, and belongs to the technical field of brakes. The brake assembly comprises a motor driving unit; comprising a plier body, a motor driving unit is arranged on the plier body, the plier body is provided with a first connecting arm, and the first connecting arm is provided with a mounting part; the support assembly comprises a support main body, the support main body is provided with a second connecting arm, the second connecting arm is provided with a guide part, and a guide through hole penetrating in the first direction is formed in the guide part; the guide assembly comprises a guide pin and a dust cover, the dust cover comprises a first lip part, a folding part and a second lip part which are integrally connected, the first lip part is in sealed connection with the outer wall face of the mounting part, the second lip part is in sealed connection with the outer wall face of the guide part, and the guide pin penetrates through the guide through hole and the dust cover. The first end of the guide pin is detachably connected with the mounting part; and the dustproof plug is arranged at the front end of the guide through hole. According to the utility model, the guide pin is convenient to install and move smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a brake assembly. Background Art

[0002] With the popularization of new energy vehicles, the requirements for the drag torque of calipers in vehicles are getting higher and higher, and it is required that the drag torque of the caliper is close to zero. In addition, with the demand for intelligent driving, the EMB caliper, that is, the Electronic Mechanical Brake caliper, has emerged, which can achieve the separation of software and hardware.

[0003] In the prior art, the EMB caliper includes a bracket assembly, a caliper body assembly and a motor drive unit. A guide pin is slidably arranged on the caliper body assembly. On the inner side of the caliper body assembly, not only the motor drive unit is installed, but also mounting bolts are provided. After connecting the guide pin and the mounting bolts, the caliper body assembly is mounted on the bracket assembly.

[0004] With the development of automotive electrification, intelligence and networking, a larger-sized circuit board is integrated in the motor drive unit of the EMB caliper, and there are more and more components, resulting in that the motor drive unit will block the installation space of the mounting bolts, making it difficult to install the guide pin.

[0005] Therefore, there is an urgent need to provide a brake assembly to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a brake assembly to facilitate the installation and smooth movement of the guide pin.

[0007] To achieve the above purpose, the following technical solutions are provided:

[0008] The brake assembly includes:

[0009] A motor drive unit;

[0010] A caliper body assembly including a caliper body, the motor drive unit is arranged on the caliper body, the caliper body is provided with a first connecting arm, and the first connecting arm is provided with a mounting portion;

[0011] A bracket assembly including a bracket main body, the bracket main body is provided with a second connecting arm, the second connecting arm is provided with a guiding portion, and a guiding through hole penetrating along a first direction is arranged in the guiding portion;

[0012] The guiding component includes a guiding pin and a dust cover. The dust cover includes a first lip portion, a folding portion, and a second lip portion that are integrally connected. The first lip portion is sealingly connected to the outer wall surface of the mounting portion, and the second lip portion is sealingly connected to the outer wall surface of the guiding portion. The guiding pin is inserted through the guiding through-hole and the dust cover, and the first end of the guiding pin is detachably connected to the mounting portion;

[0013] The dust plug is arranged at the front end of the guiding through-hole.

[0014] As an alternative to the brake assembly, a first limiting ring is circumferentially arranged on the inner wall surface of the first lip portion, and a first annular groove is circumferentially arranged on the outer wall surface of the mounting portion. The first limiting ring is sleeved in the first annular groove.

[0015] As an alternative to the brake assembly, a second limiting ring is circumferentially arranged on the inner wall surface of the second lip portion, and a second annular groove is circumferentially arranged on the outer wall surface of the guiding portion. The second limiting ring is sleeved in the second annular groove, and the dust cover is made of rubber material.

[0016] As an alternative to the brake assembly, a screw portion is arranged at the first end of the guiding pin, and a threaded hole is arranged on the mounting portion. The screw portion is threadedly connected to the threaded hole.

[0017] As an alternative to the brake assembly, a plug-in portion is arranged at the first end of the guiding pin, and a connecting groove is arranged on the mounting portion. The plug-in portion is plugged into the connecting groove.

[0018] As an alternative to the brake assembly, a screwing limiting groove is arranged at the second end of the guiding pin.

[0019] As an alternative to the brake assembly, limiting heads, a first sealing ring, a second sealing ring, and a third sealing ring are arranged at intervals along a first direction on the main body of the dust plug. The outer diameters of the first sealing ring and the third sealing ring are both smaller than the outer diameter of the second sealing ring. A fourth annular groove is arranged on the inner wall surface of the guiding through-hole. The limiting head abuts against the outer wall surface of the guiding portion. The first sealing ring and the third sealing ring are in contact with the inner wall of the guiding through-hole, and the second sealing ring abuts against the bottom of the fourth annular groove.

[0020] As an alternative to the brake assembly, the guiding component further includes a shock-absorbing sleeve. A third annular groove is arranged on the outer wall surface of the guiding pin. The shock-absorbing sleeve is sleeved on the guiding pin, and the shock-absorbing sleeve is located at the third annular groove.

[0021] As an alternative to the brake assembly, a notch is arranged on the outer wall surface of the guiding pin.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] For the brake assembly provided by the present utility model, a motor drive unit and a first connecting arm are arranged on the caliper body, and a guiding through hole penetrating along a first direction is arranged on the bracket main body. During actual use, lubricating grease can be filled into the guiding through hole. The guiding pin can be inserted into the front port of the guiding through hole and connected to the mounting part, canceling the way of arranging mounting bolts on the caliper body and adopting the way of directly connecting the guiding pin to the caliper body. Since the guiding pin and the mounting part can be connected by means of threaded connection, clamping connection or plugging connection, etc., the disassembly requirement of the guiding pin is met. The part of the guiding pin between the guiding part and the mounting part is covered by a dust cover to prevent dust from falling on the surface of the guiding pin and thus contaminating the lubricating grease in the guiding through hole. The front end of the guiding through hole is sealed by a dust plug to prevent dust from entering from the front end of the guiding through hole, ensuring the smooth sliding of the guiding pin and improving the braking ability. Since the guiding pin is assembled from the front end of the guiding through hole, the motor drive unit located at the rear end of the caliper body can be expanded in terms of circuit board modules according to actual conditions, ensuring that the motor drive unit will not have structural interference with other parts.

[0024] For the brake assembly provided by the present utility model, when it is installed at the wheel end of the vehicle chassis, the guiding pin of the brake can slide smoothly, and the motor drive unit will not have structural interference with other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0026] Figure 1 It is an assembly schematic diagram of the brake assembly in the embodiment of the present utility model;

[0027] Figure 2 It is a top view of the brake assembly in the embodiment of the present utility model (the motor drive unit is not shown);

[0028] Figure 3 It is Figure 2 a cross-sectional view taken along the A-A direction in

[0029] Figure 4 It is an exploded schematic diagram of the brake assembly in the embodiment of the present utility model;

[0030] Figure 5 It is a cross-sectional view of the dust cover in the embodiment of the present utility model;

[0031] Figure 6 This is a schematic structural diagram of the first guide pin in the embodiment of the present utility model;

[0032] Figure 7 This is a schematic structural diagram of the second guide pin in the embodiment of the present utility model;

[0033] Figure 8 This is a schematic structural diagram of the dust plug in the embodiment of the present utility model.

[0034] Reference numerals:

[0035] 1. Plier body assembly; 2. Bracket assembly; 3. Guide assembly; 4. Dust plug; 5. Motor drive unit;

[0036] 11. Plier body; 12. First connecting arm; 13. Mounting part; 131. First annular groove; 132. Threaded hole;

[0037] 21. Bracket main body; 22. Second connecting arm; 23. Guide part; 231. Guide through hole; 232. Second annular groove; 233. Fourth annular groove; 24. Inner brake block; 25. Outer brake block;

[0038] 31. Guide pin; 311. Screw part; 312. Screwing limit groove; 313. Third annular groove; 314. Notch; 32. Dust cover; 321. First lip part; 3211. First limit ring; 322. Folding part; 323. Second lip part; 3231. Second limit ring; 33. Shock-absorbing sleeve;

[0039] 41. Limit head; 42. First sealing ring; 43. Second sealing ring; 44. Third sealing ring. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is habitually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0044] For the convenience of the installation and smooth movement of the guide pin, the present embodiment provides a brake assembly, which will be described in detail below in combination with Figures 1 to 8 The specific content of this embodiment will be described in detail. It should be noted that the first direction mentioned in this embodiment is Figure 1 the X direction in

[0045] As Figures 1 to 5As shown in the figure, the brake assembly in this embodiment includes a motor drive unit 5, a caliper assembly 1, a bracket assembly 2, a guiding assembly 3, and a dust plug 4. The caliper assembly 1 includes a caliper 11, and the motor drive unit 5 is arranged on the caliper 11. The caliper 11 is provided with a first connecting arm 12, and an installation portion 13 is arranged on the first connecting arm 12. The bracket assembly 2 includes a bracket body 21, an inner brake block 24, and an outer brake block 25. The inner brake block 24 and the outer brake block 25 are arranged on the bracket body 21 (prior art, not elaborated here). The bracket body 21 is provided with a second connecting arm 22, a guiding portion 23 is arranged on the second connecting arm 22, and a guiding through hole 231 penetrating along the first direction is arranged in the guiding portion 23. The guiding assembly 3 includes a guiding pin 31 and a dust cover 32. The dust cover 32 includes a first lip portion 321, a folding portion 322, and a second lip portion 323 which are integrally connected. The first lip portion 321 is hermetically connected to the outer wall surface of the installation portion 13, and the second lip portion 323 is hermetically connected to the outer wall surface of the guiding portion 23. The guiding pin 31 is inserted into the guiding through hole 231 and the dust cover 32, and the first end of the guiding pin 31 is detachably connected to the installation portion 13. The dust plug 4 is arranged at the front end of the guiding through hole 231, providing the function of a decorative surface and playing a role in waterproof and dustproof sealing.

[0046] Inside the motor drive unit 5 (not shown, with various structures), there are a motor, gears, etc. After the motor rotates, it drives a piston (not shown, with various structures) of the caliper assembly 1 to move in the piston cylinder of the caliper 11, thereby pushing the inner brake block 24 towards the brake disc. The reaction force drives the caliper assembly 1 and the motor drive unit 5 to move in the opposite direction. The guiding pin 31 serves as a key sliding component and drives the outer brake block 25 towards the brake disc, thereby realizing the clamping process.

[0047] In the brake assembly provided in this embodiment, a motor drive unit 5 and a first connecting arm 12 are arranged on the caliper body 11, and a guiding through hole 231 penetrating along a first direction is arranged on the bracket body 21. During actual use, lubricating grease can be filled in the guiding through hole 231. The guiding pin 31 can be inserted into the front port of the guiding through hole 231 and connected to the mounting portion 13 on the first connecting arm 12, canceling the method of arranging mounting bolts on the caliper body 11 and adopting the method of directly connecting the guiding pin 31 to the caliper body 11. Since the guiding pin 31 and the mounting portion 13 can be connected by means of threaded connection, clamping connection or plugging connection, etc., the disassembly requirement of the guiding pin 31 is satisfied. The part of the guiding pin 31 between the guiding portion 23 and the mounting portion 13 is covered by a dust cover 32 to prevent dust from falling on the surface of the guiding pin 31 and then contaminating the lubricating grease in the guiding through hole 231. The front end of the guiding through hole 231 is sealed by a dust plug 4 to prevent dust from entering from the front end of the guiding through hole 231, ensuring the smooth sliding of the guiding pin 31 and improving the braking ability. Since the guiding pin 31 is assembled from the front end of the guiding through hole 231, the motor drive unit 5 located at the rear end of the caliper body 11 can perform module expansion of the circuit board according to actual conditions, ensuring that the motor drive unit 5 will not have structural interference with other parts.

[0048] Further, a first limiting ring 3211 is circumferentially arranged on the inner wall surface of the first lip portion 321, and a first annular groove 131 is circumferentially arranged on the outer wall surface of the mounting portion 13. The first limiting ring 3211 is sleeved in the first annular groove 131. The inner diameter of the first limiting ring 3211 is not greater than the outer diameter of the bottom of the first annular groove 131, so that the first limiting ring 3211 and the first annular groove 131 are in interference fit, ensuring the connection sealing performance and stability between the first lip portion 321 of the dust cover 32 and the mounting portion 13.

[0049] Further, a second limiting ring 3231 is circumferentially arranged on the inner wall surface of the second lip portion 323, and a second annular groove 232 is circumferentially arranged on the outer wall surface of the guiding portion 23. The second limiting ring 3231 is sleeved in the second annular groove 232, and the dust cover 32 is made of rubber material. The inner diameter of the second limiting ring 3231 is not greater than the outer diameter of the bottom of the second annular groove 232, so that the second limiting ring 3231 and the second annular groove 232 are in interference fit, ensuring the connection sealing performance and stability between the second lip portion 323 of the dust cover 32 and the guiding portion 23 of the second connecting arm 22.

[0050] Optionally, as Figure 3 Combined with Figure 6 and Figure 7As shown, in this embodiment, a screw portion 311 is provided at the first end of the guide pin 31, and a threaded hole 132 is provided in the mounting portion 13 of the first connecting arm 12. The screw portion 311 is threadedly connected to the threaded hole 132. Since an external thread is provided on the outer wall of the screw portion 311, the connection between the guide pin 31 and the threaded hole 132 of the mounting portion 13 can be achieved by screwing.

[0051] Optionally, in other embodiments, a plug-in portion is provided at the first end of the guide pin 31, and a connection groove is provided in the mounting portion 13 of the first connecting arm 12. The plug-in portion is plugged into the connection groove. The connection between the guide pin 31 and the mounting portion 13 is achieved by plugging. To ensure the connection stability, a plugging pin can also be passed through the connection groove and inserted into the guide pin 31 along the radial direction of the guide pin 31. When the guide pin 31 needs to be replaced, first pull out the plugging pin, and then pull out the guide pin 31 from the connection groove.

[0052] Furthermore, a screwing limiting groove 312 is provided at the second end of the guide pin 31, and an electric tool is inserted into the screwing limiting groove 312 to assemble the guide pin 31. Optionally, the screwing limiting groove 312 includes a flat groove, a cross groove or a polygonal groove.

[0053] Furthermore, as Figure 3 Combined with Figure 8 shown, on the main body of the dust plug 4, a limiting head 41, a first sealing ring 42, a second sealing ring 43 and a third sealing ring 44 are arranged at intervals along the first direction. The outer diameters of the first sealing ring 42 and the third sealing ring 44 are both smaller than the outer diameter of the second sealing ring 43. A fourth annular groove 233 is provided on the inner wall surface of the guide through hole 231. The limiting head 41 abuts against the outer wall surface of the guide portion 23. The first sealing ring 42 and the third sealing ring 44 are in contact with the inner wall of the guide through hole 231, and the second sealing ring 43 abuts against the bottom of the fourth annular groove 233. In this embodiment, the dust plug 4 is made of rubber material. By adding the first sealing ring 42, the second sealing ring 43 and the third sealing ring 44, the fitting area between the dust plug 4 and the inner wall surface of the guide through hole 231 can be increased, ensuring the good waterproof and dustproof sealing effect of the dust plug 4. Among them, the second sealing ring 43 abuts against the bottom of the fourth annular groove 233, further increasing the sealing fitting area between the dust plug 4 and the inner wall surface of the guide through hole 231. By adding the limiting head 41, it can be avoided that the dust plug 4 is completely inserted into the guide through hole 231.

[0054] Furthermore, as Figure 3 Combined with Figure 4 and Figure 6As shown, the first guiding component 3 in this embodiment further includes a shock-absorbing sleeve 33. A third annular groove 313 is provided on the outer wall surface of the guiding pin 31. The shock-absorbing sleeve 33 is sleeved on the guiding pin 31, and the guiding pin 31 is located at the third annular groove 313. By adding the shock-absorbing sleeve 33, the shock-absorbing sleeve 33 has greater flexibility and provides more buffering and shock-absorbing functions, which can buffer and reduce the impact of the vibration from the wheel on the movement of the caliper assembly 1.

[0055] Further, as Figure 4 Combined with Figure 7 As shown, a notch 314 is provided on the outer wall surface of the second guiding pin 31 in this embodiment. Since the guiding pin 31 is relatively long in size, reducing a part locally can reduce the additional load caused by dimensional and shape errors and also reduce the sliding resistance. The second guiding pin 31 can withstand a greater tangential load compared with the first guiding component 3. The first guiding component 3 can provide more buffering and shock-absorbing functions compared with the first guiding component 3. The cooperation of the two enables the caliper assembly 1 to slide more smoothly on the bracket assembly 2.

[0056] Optionally, in this embodiment, the brake assembly can adopt the first guiding component 3 and the second guiding pin 3 simultaneously. In other application scenarios, two identical first guiding components 3 or two identical second guiding components 3 can also be used on the left and right sides of the brake assembly.

[0057] This embodiment also provides a vehicle, which includes a chassis and the above-mentioned brake assembly. The brake assembly is arranged at the wheel end of the chassis. During braking, the caliper 11 of the brake can slide smoothly along with the guiding pin 31, improving the braking ability.

[0058] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A brake assembly, characterized in that, Comprising: A motor drive unit (5); A clamp body assembly (1), including a clamp body (11), the motor drive unit (5) is arranged on the clamp body (11), the clamp body (11) is provided with a first connecting arm (12), and an installation part (13) is arranged on the first connecting arm (12); A bracket assembly (2), including a bracket main body (21), the bracket main body (21) is provided with a second connecting arm (22), a guiding part (23) is arranged on the second connecting arm (22), and a guiding through hole (231) penetrating along a first direction is arranged in the guiding part (23); A guiding component (3), including a guiding pin (31) and a dust cover (32), the dust cover (32) includes a first lip part (321), a folding part (322) and a second lip part (323) which are integrally connected, the first lip part (321) is hermetically connected to the outer wall surface of the installation part (13), the second lip part (323) is hermetically connected to the outer wall surface of the guiding part (23), the guiding pin (31) is arranged in the guiding through hole (231) and the dust cover (32), and the first end of the guiding pin (31) is detachably connected to the installation part (13); A dust plug (4) is arranged at the front end of the guiding through hole (231).

2. The brake assembly according to claim 1, wherein A first limiting ring (3211) is circumferentially arranged on the inner wall surface of the first lip part (321), a first annular groove (131) is circumferentially arranged on the outer wall surface of the installation part (13), and the first limiting ring (3211) is sleeved in the first annular groove (131).

3. The brake assembly according to claim 2, wherein, A second limiting ring (3231) is circumferentially arranged on the inner wall surface of the second lip part (323), a second annular groove (232) is circumferentially arranged on the outer wall surface of the guiding part (23), the second limiting ring (3231) is sleeved in the second annular groove (232), and the dust cover (32) is made of rubber material.

4. The brake assembly according to claim 3, characterized in that, A screw part (311) is arranged at the first end of the guiding pin (31), a threaded hole (132) is arranged on the installation part (13), and the screw part (311) is threadedly connected to the threaded hole (132).

5. The brake assembly according to claim 3, characterized in that, A plug-in part is arranged at the first end of the guiding pin (31), a connecting groove is arranged on the installation part (13), and the plug-in part is plugged into the connecting groove.

6. The brake assembly according to claim 3, characterized in that, A screwing limiting groove (312) is arranged at the second end of the guiding pin (31).

7. The brake assembly according to claim 4, characterized in that, Limiting heads (41), a first sealing ring (42), a second sealing ring (43) and a third sealing ring (44) are arranged at intervals along the first direction on the main body of the dust plug (4), the outer diameters of the first sealing ring (42) and the third sealing ring (44) are both smaller than the outer diameter of the second sealing ring (43), a fourth annular groove (233) is arranged on the inner wall surface of the guiding through hole (231), the limiting head (41) is stopped at the outer wall surface of the guiding part (23), the first sealing ring (42) and the third sealing ring (44) are in contact with the inner wall of the guiding through hole (231), and the second sealing ring (43) is in contact with the bottom of the fourth annular groove (233).

8. The brake assembly according to any one of claims 1-7, characterized in that, The guiding component (3) further includes a shock-absorbing sleeve (33). A third annular groove (313) is provided on the outer wall surface of the guiding pin (31). The shock-absorbing sleeve (33) is sleeved on the guiding pin (31), and the shock-absorbing sleeve (33) is located at the third annular groove (313).

9. The brake assembly according to any one of claims 1-7, characterized in that, A notch (314) is provided on the outer wall surface of the guiding pin (31).

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