Brake and vehicle

Abstract

The utility model discloses a brake and a vehicle, and belongs to the technical field of automobile braking systems. The brake comprises a protective shell; the caliper body is provided with at least two guide cylinders at intervals in the first direction, the protective shell is installed at the inner end of the caliper body, and the outer wall face of the protective shell is stopped on the guide cylinders. The support assembly comprises a support body, at least two first protruding parts are arranged on the support body at intervals in the first direction, and first mounting holes extending in the second direction are formed in the first protruding parts; the guide assembly comprises a fastening screw and a guide pin, the tail of the guide pin is inserted into the guide cylinder in the second direction and can slide, a first contact point and a second contact point are formed between the guide pin and the guide cylinder, and the gravity center of the clamp body assembly is located between the first contact point and the second contact point. The utility model not only eliminates the influence of the shift of the gravity center of the clamp body assembly, but also facilitates the assembly and disassembly of the fastening bolt and the guide pin.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive braking systems, and particularly relates to a brake and a vehicle. 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 realize the separation of software and hardware, and the EMB caliper itself adopts a redundant design, improving the safety of the system. There are the following problems compared with traditional calipers:

[0003] First, the traditional caliper includes a bracket assembly and a caliper body assembly. The caliper body assembly is connected to the pin hole of the bracket assembly through a guide pin, and the force-bearing point of the guide pin is used to bear the weight of the caliper body assembly. The EMB caliper adds a drive module (where the drive module includes an MGU unit (Motor Gear Unit, motor gear unit) and an ECU unit (Electronic Control Unit, electronic control unit)) at the rear side of the caliper body assembly based on the traditional caliper, resulting in the center of gravity of the caliper body assembly shifting to the left. There is an offset between the force-bearing point of the guide pin and the center of gravity of the caliper body assembly. On the one hand, as the friction pads wear, the caliper will drop and pitch, making it difficult for the active return spring of the outer friction pad to pull the housing back. On the other hand, because the caliper body deflects, the clearance between the friction pad and the brake disc becomes smaller, resulting in drag. On the third hand, due to the leftward shift of the center of gravity, especially when the friction pads are completely worn, the cantilever trend is obvious, and the influence of vibration is aggravated.

[0004] Second, the protective shell of the drive module is relatively large in volume, which easily blocks the fastening bolts connected to the guide pin and is not convenient for disassembly and maintenance.

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

[0006] The purpose of the utility model is to provide a brake and a vehicle, which can, on the one hand, eliminate the influence of the offset of the center of gravity of the caliper body assembly relative to the force-bearing point of the guide pin, and on the other hand, facilitate the installation and disassembly of the fastening bolts and the guide pin.

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

[0008] A brake, comprising:

[0009] A drive module, including a protective shell;

[0010] The caliper assembly includes a caliper body. At least two guide cylinders are arranged at intervals along a first direction on the caliper body. The protective shell is installed at the inner end of the caliper body, and the outer wall surface of the protective shell abuts against the guide cylinder.

[0011] The bracket assembly includes a bracket body. At least two first protruding portions are arranged at intervals along the first direction on the bracket body. The first protruding portion is provided with a first mounting hole extending along a second direction.

[0012] The guiding component includes a fastening screw and a guiding pin. The tail of the guiding pin is inserted into the guide cylinder along the second direction and can slide. A first contact point and a second contact point are formed between the guiding pin and the guide cylinder. The center of gravity of the caliper assembly is located between the first contact point and the second contact point. The fastening screw is threadedly connected to the first mounting hole, and the head of the fastening screw abuts against the outer wall surface of the first protruding portion. One end of the fastening screw passes through the first mounting hole along the second direction and is threadedly connected to the head of the guiding pin.

[0013] As an alternative solution for the brake, the guiding component further includes a shock-absorbing sleeve. An annular groove is concavely provided on the outer wall surface of the tail of the guiding pin. The shock-absorbing sleeve is located in the guide cylinder and sleeved at the annular groove.

[0014] As an alternative solution for the brake, a plurality of the shock-absorbing sleeves are sleeved on the guiding pin along the second direction.

[0015] As an alternative solution for the brake, the guiding component further includes a dust cover. The dust cover includes a first lip portion, a corrugated folding portion and a second lip portion which are connected in sequence. The guiding pin passes through the dust cover. The first lip portion is sealingly connected to the outer wall surface of the guide cylinder. The second lip portion is sealingly connected to the outer wall surface of the head of the guiding pin.

[0016] As an alternative solution for the brake, a third lip portion is provided on the inner wall surface of the first lip portion. The third lip portion and the first lip portion enclose a first limiting annular groove. The mouth of the guide cylinder is clamped in the first limiting annular groove, and the third lip portion is clamped between the inner wall surface of the guide cylinder and the outer wall surface of the guiding pin.

[0017] As an alternative solution for the brake, a second limiting annular groove is provided on the outer wall surface of the head of the guiding pin. An annular limiting protrusion is provided on the inner wall surface of the second lip portion. The annular limiting protrusion presses against the second limiting annular groove.

[0018] As an alternative solution for the brake, the dust cover is made of rubber material.

[0019] As an alternative to the brake, at least two second protrusions are provided at the inner end of the caliper body. The second protrusions are provided with second mounting holes extending in the second direction. The protective housing is provided with a third protrusion, and the third protrusion is provided with a third mounting hole extending in the second direction. A fastener passes through the third mounting hole and is connected to the second mounting hole.

[0020] As an alternative to the brake, the head of the fastening screw is provided with a screwing slot.

[0021] A vehicle, including a chassis and the brake according to any one of the above, wherein the brake is provided at a wheel end of the chassis.

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

[0023] For the brake provided by the present utility model, the protective housing of the drive module is installed at one end of the caliper body away from the bracket assembly. A first mounting hole is provided on the first protrusion of the bracket body, and a guide cylinder is provided on the caliper body. The tail of the guide pin slides into the guide cylinder along the second direction. A first contact point and a second contact point are formed between the guide pin and the guide cylinder. The center of gravity of the caliper assembly is located between the first contact point and the second contact point. The fastening screw passes through the first mounting hole along the second direction and is then connected to the guide pin. Since the guide pin and the drive module are both installed on the caliper assembly, the center of gravity of the caliper assembly is located between the first contact point and the second contact point of the guide pin, eliminating the influence of the center of gravity offset, avoiding the caliper assembly from tilting up, and reducing the influence of drag and vibration. In the present utility model, since the fastening screw can be connected to the guide pin from the outside to the inside, even if the protective housing of the drive module blocks the back of the guide cylinder, it does not affect the installation and disassembly of the fastening screw, reducing the assembly difficulty. Installing the protective housing of the drive module on the caliper body, although the guide cylinder on the caliper body is blocked by the protective housing, it is convenient to increase the volume of the protective housing, which helps to expand the function modules of the ECU unit.

[0024] For the vehicle provided by the present utility model, the brake is provided at the wheel end of the chassis, so that the center of gravity of the caliper assembly is located between the first contact point and the second contact point of the guide pin, eliminating the center of gravity offset of the caliper assembly and contributing to the normal braking of the vehicle. 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 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 based on the content of the embodiments of the present utility model and these drawings.

[0026] Figure 1Schematic assembly diagram of the brake in the embodiment of the present utility model;

[0027] Figure 2 Explosion diagram of the brake in the embodiment of the present utility model;

[0028] Figure 3 Cross-sectional view of the brake in the embodiment of the present utility model;

[0029] Figure 4 is Figure 3 partial enlarged view at position A in

[0030] Figure 5 Schematic structural diagram of the dust cover in the embodiment of the present utility model;

[0031] Figure 6 Schematic structural diagram that the center of gravity of the caliper assembly in the embodiment of the present utility model is located between the first contact point and the second contact point.

[0032] Reference numerals:

[0033] 001, first contact point; 002, second contact point; 003, center of gravity;

[0034] 1, drive module; 2, caliper assembly; 3, bracket assembly; 4, guiding assembly; 5, fastener;

[0035] 11, protective shell; 12, third convex part; 121, third mounting hole;

[0036] 21, caliper body; 22, guiding cylinder; 23, second convex part; 231, second mounting hole; 24, pushing piston part;

[0037] 31, bracket body; 32, first convex part; 321, first mounting hole; 34, inner friction plate; 35, outer friction plate;

[0038] 41, fastening screw; 411, screwing slot; 42, guiding pin; 421, annular clamping groove; 422, second limiting annular groove; 43, shock-absorbing sleeve; 44, dust cover; 441, first lip part; 442, corrugated folding part; 443, second lip part; 444, third lip part; 445, first limiting annular groove; 446, annular limiting protrusion. Detailed implementation manners

[0039] 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 in conjunction with 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. Components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0040] 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 utility model product 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 of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed 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.

[0041] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" 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.

[0042] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0043] To eliminate the offset of the center of gravity of the pliers body assembly relative to the force-bearing surface of the guide pin and facilitate the installation and removal of the fastening bolt and the guide pin, this embodiment provides a brake, which will be described in detail below in conjunction with Figures 1 to 6 The specific content of this embodiment will be described in detail. It should be noted that the first direction mentioned in this embodiment is the Figure 2 X direction in Figure 2 The second direction, the front-back direction, and the inner-outer direction mentioned in this embodiment are all the Figure 2 Y direction in

[0044] As shown in Figures 1 to 3 And in conjunction with Figure 6As shown in the figure, the brake in this embodiment includes a driving module 1, a caliper assembly 2, a bracket assembly 3, and a guiding assembly 4. The driving module 1 includes a protective housing 11. The caliper assembly 2 includes a caliper body 21 and a pushing piston portion 24. The pushing piston portion 24 can extend or retract relative to the caliper body 21 under the action of the driving module 1. The caliper body 21 is provided with at least two guiding cylinders 22 at intervals along a first direction. The protective housing 11 is installed at the inner end of the caliper body 21, and the outer wall surface of the protective housing 11 abuts against the guiding cylinders 22. The bracket assembly 3 includes a bracket body 31, an inner friction plate 34, and an outer friction plate 35. The inner friction plate 34 and the outer friction plate 35 can be reset under the action of a return spring (the prior art will not be elaborated here). The bracket body 31 is provided with at least two first protruding portions 32 at intervals along the first direction. The first protruding portions 32 are provided with first mounting holes 321 extending along a second direction. Specifically, the depth of the guiding cylinder 22 along the second direction is greater than the depth of the first mounting hole 321. The guiding assembly 4 includes a fastening screw 41 and a guiding pin 42. The tail of the guiding pin 42 is inserted into the guiding cylinder 22 along the second direction and can slide. A first contact point 001 and a second contact point 002 are formed between the guiding pin 42 and the guiding cylinder 22. The center of gravity 003 of the caliper assembly 2 is located between the first contact point 001 and the second contact point 002. The fastening screw 41 is threadedly connected with the first mounting hole 321, and the head of the fastening screw 41 abuts against the outer wall surface of the first protruding portion 32. One end of the fastening screw 41 passes through the first mounting hole 321 along the second direction and is threadedly connected with the head of the guiding pin 42.

[0045] In short, for the brake provided in this embodiment, the protective housing 11 of the driving module 1 is installed at one end of the caliper body 21 away from the bracket assembly 3. The first protruding portion 32 of the bracket body 31 is provided with a first mounting hole 321, and the caliper body 21 is provided with a guiding cylinder 22. The tail of the guiding pin 42 slides and is inserted into the guiding cylinder 22 along the second direction, and the fastening screw 41 passes through the first mounting hole 321 along the second direction and then is connected with the guiding pin 42. Since both the guiding pin 42 and the driving module 1 are installed on the caliper assembly 2, and the center of gravity 003 of the caliper assembly 2 is located between the first contact point 001 and the second contact point 002, the influence of the center of gravity offset is eliminated, the caliper assembly 2 is prevented from tilting up, and the influence of drag and vibration is reduced. In the present utility model, since the fastening screw 41 can be connected with the guiding pin 42 from the outside to the inside, even if the protective housing 11 of the driving module 1 blocks the back of the guiding cylinder 22, it does not affect the installation and disassembly of the fastening screw 41, and the assembly difficulty is reduced. Installing the protective housing 11 of the driving module 1 at the proximal end of the caliper body 21, although the guiding cylinder 22 on the caliper body 21 is blocked by the protective housing 11, it is convenient to increase the volume of the protective housing 11, which helps the ECU unit to expand the function module.

[0046] Further, as Figure 3As shown, the guide assembly 4 also includes a shock-absorbing sleeve 43, and an annular groove 421 is concavely formed on the outer wall surface of the tail of the guide pin 42. The shock-absorbing sleeve 43 is located in the guide cylinder 22 and sleeved on the annular groove 421. The shock-absorbing sleeve 43 is made of rubber material. By adding the shock-absorbing sleeve 43, the influence of the wheel end vibration on the guide pin 42 can be reduced. The shock-absorbing sleeve 43 is located between the first contact point 001 and the second contact point 002, and the shock-absorbing sleeve 43 is interference fit with the inner wall surface of the guide cylinder 22.

[0047] Furthermore, if Figures 3 to 5 As shown, the guide assembly 4 also includes a dust cover 44, which is made of rubber material. The dust cover 44 includes a first lip portion 441, a corrugated folded portion 442, and a second lip portion 443 connected in sequence. The guide pin 42 is inserted into the dust cover 44, the first lip portion 441 is sealedly connected to the outer wall surface of the guide cylinder 22, and the second lip portion 443 is sealedly connected to the outer wall surface of the head of the guide pin 42. By arranging the dust cover 44 on the outer sleeve of the guide pin 42, it is possible to prevent flying dust in the air from entering the guide cylinder 22, thereby ensuring the smoothness of the guide pin 42 sliding in the guide cylinder 22.

[0048] Furthermore, the inner wall surface of the first lip portion 441 is provided with a third lip portion 444, and the third lip portion 444 and the first lip portion 441 are surrounded to form a first limiting annular groove 445, and the tube mouth of the guide cylinder 22 is clamped in the first limiting annular groove 445, and the third lip portion 444 is sandwiched between the inner wall surface of the guide cylinder 22 and the outer wall surface of the guide pin 42. The guide cylinder 22 cooperates with the first limiting annular groove 445, and the third lip portion 444 fills the gap between the inner wall surface of the guide cylinder 22 and the outer wall surface of the guide pin 42, and blocks the inner cavity of the guide cylinder 22 while ensuring the free sliding of the guide pin 42, thereby ensuring the cleanliness of the inner cavity of the guide cylinder 22. Since the third lip portion 444 is made of rubber, the third lip portion 444 can also play a role in buffering and shock absorption. The ECU unit is better protected to prevent the failure mode of PIN pin breakage and electronic component falling off due to vibration impact.

[0049] Furthermore, the outer wall surface of the head of the guide pin 42 is provided with a second limiting annular groove 422, and the inner wall surface of the second lip portion 443 is provided with an annular limiting protrusion 446, which is pressed into the second limiting annular groove 422. The annular limiting protrusion 446 of the dust cover 44 is matched in shape with the second limiting annular groove 422 of the guide pin 42, thereby increasing the tightness of the fit between the two.

[0050] For example, Figure 1 Combination Figure 2As shown, at least two second protruding portions 23 are provided at the inner end of the caliper body 21. The second protruding portion 23 is provided with a second mounting hole 231 extending in the second direction. A third protruding portion 12 is provided on the protective housing 11. The third protruding portion 12 is provided with a third mounting hole 121 extending in the second direction. The fastener 5 passes through the third mounting hole 121 and is connected to the second mounting hole 231. The fastener 5 is a connecting bolt, and the threaded connection method can ensure the assembly stability of both the caliper body 21 and the protective housing 11.

[0051] Optionally, a screwing slot 411 is provided at the head of the fastening screw 41. The screwing slot 411 can be, but is not limited to, a flat slot, a cross slot, a polygonal slot, etc., and no further limitations are made here.

[0052] This embodiment also provides a vehicle, which includes a chassis and the above-mentioned brake. The brake is provided at the wheel end of the chassis. The guide pin 42 and the drive module 1 of the brake are both located on the caliper assembly 2, eliminating the center of gravity offset of the caliper assembly 2 and contributing to the normal braking of the vehicle.

[0053] 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 more 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, characterized in that, include: A driving module (1) comprising a protective shell (11); The caliper body assembly (2) comprises a caliper body (21), wherein the caliper body (21) is provided with at least two guide cylinders (22) spaced apart along a first direction, the protective shell (11) is mounted on the inner end of the caliper body (21), and the outer wall surface of the protective shell (11) stops at the guide cylinders (22); A bracket assembly (3) comprises a bracket body (31), wherein at least two first protrusions (32) are arranged on the bracket body (31) at intervals along a first direction, and the first protrusions (32) are provided with a first mounting hole (321) extending along a second direction; The guide assembly (4) comprises a fastening screw (41) and a guide pin (42), wherein the tail of the guide pin (42) is inserted into the guide cylinder (22) along the second direction and is capable of sliding, a first contact point (001) and a second contact point (002) are formed between the guide pin (42) and the guide cylinder (22), the center of gravity (003) of the caliper body assembly (2) is located between the first contact point (001) and the second contact point (002), the fastening screw (41) is threadedly connected to the first mounting hole (321), and the head of the fastening screw (41) abuts against the outer wall surface of the first protrusion (32), and one end of the fastening screw (41) passes through the first mounting hole (321) along the second direction and is threadedly connected to the head of the guide pin (42).

2. The brake according to claim 1, characterized in that, The guide assembly (4) further comprises a shock-absorbing sleeve (43), the outer wall surface of the tail of the guide pin (42) is concavely provided with an annular groove (421), and the shock-absorbing sleeve (43) is located in the guide cylinder (22) and sleeved on the annular groove (421).

3. The brake according to claim 2, characterized in that, A plurality of shock-absorbing sleeves (43) are sleeved on the guide pin (42) along the second direction.

4. The brake according to claim 1, characterized in that, The guide assembly (4) also includes a dust cover (44), which includes a first lip portion (441), a corrugated folded portion (442) and a second lip portion (443) connected in sequence, and the guide pin (42) is inserted into the dust cover (44), the first lip portion (441) is sealedly connected to the outer wall surface of the guide cylinder (22), and the second lip portion (443) is sealedly connected to the outer wall surface of the head of the guide pin (42).

5. The brake according to claim 4, characterized in that, The inner wall surface of the first lip portion (441) is provided with a third lip portion (444), and the third lip portion (444) and the first lip portion (441) are arranged to form a first limiting annular groove (445), the tube mouth of the guide tube (22) is clamped in the first limiting annular groove (445), and the third lip portion (444) is clamped between the inner wall surface of the guide tube (22) and the outer wall surface of the guide pin (42).

6. The brake according to claim 4, characterized in that, The outer wall surface of the head of the guide pin (42) is provided with a second limiting annular groove (422), and the inner wall surface of the second lip portion (443) is provided with an annular limiting protrusion (446), and the annular limiting protrusion (446) is pressed against the second limiting annular groove (422).

7. The brake according to any one of claims 4-6, characterized in that, The dust cover (44) is made of rubber material.

8. The brake according to claim 1, characterized in that, At least two second convex portions (23) are provided at the inner end of the caliper body (21). The second convex portion (23) is provided with a second mounting hole (231) extending in the second direction. A third convex portion (12) is provided on the protective shell (11). The third convex portion (12) is provided with a third mounting hole (121) extending in the second direction. A fastener (5) passes through the third mounting hole (121) and is connected to the second mounting hole (231).

9. The brake according to claim 1, characterized in that, A screwing slot (411) is provided at the head of the fastening screw (41).

10. A vehicle, characterized in that, It includes a chassis and a brake as described in any one of claims 1-9, and the brake is arranged at the wheel end of the chassis.

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