Braking devices and vehicles

Abstract

This utility model discloses a braking device and a vehicle, belonging to the field of vehicle technology. The braking device and vehicle of this utility model have a first sealing part sandwiched between a cover and a nut, a frame that abuts the sealing layer against the inner wall of the mounting hole, and a middle sealing part that can extend and retract between the first sealing part and the sealing layer. This allows the first sealing part to not only seal the gap between the cover and the nut, but also to form a seal with the outer peripheral wall of the nut, and the sealing layer to form a seal with the inner wall of the mounting hole. Simultaneously, a second sealing element seals the gap between the end of the nut away from the cover and the inner wall of the mounting hole, thereby improving the sealing performance of the braking device. Furthermore, only two components, the first and second sealing elements, need to be assembled, reducing assembly difficulty.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a braking device and a vehicle. Background Technology

[0002] With the increasing electrification of automobile chassis, the demand for intelligent control of automobile chassis braking is growing, and the application of electronic mechanical braking (EMB) systems is becoming more widespread.

[0003] In related technologies, EMB typically uses a ball screw mechanism to drive the brake caliper to provide braking force to the wheel end. To ensure the reliability of EMB, multiple sealing rings are usually required for the ball screw mechanism and brake caliper, which not only increases the assembly difficulty but also makes it difficult to meet user requirements for sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide a braking device and vehicle that can improve the sealing performance of the braking device and reduce the assembly difficulty.

[0005] To achieve the above objectives, the following technical solution is provided:

[0006] Braking device, including:

[0007] A brake caliper, comprising a caliper body, wherein the caliper body is provided with mounting holes;

[0008] A ball screw mechanism includes a threaded screw and a nut, wherein the screw is rotatably disposed in the clamp body and the nut is slidably disposed in the mounting hole;

[0009] A cover body, one end of which is used to connect to the friction plate, and the other end is fixedly connected to the nut;

[0010] The first sealing element includes a first sealing part, an intermediate sealing part, and a second sealing part. The first sealing part is sandwiched between the cover and the nut. The second sealing part includes a skeleton and a sealing layer covering the outside of the skeleton. The skeleton can abut the sealing layer against the inner wall of the mounting hole. The intermediate sealing part is telescopically connected between the first sealing part and the sealing layer.

[0011] The second sealing element is sandwiched between the outer peripheral wall of the nut and the inner wall of the mounting hole, and the second sealing element is located at the end of the nut away from the cover.

[0012] As a preferred technical solution of the above-mentioned braking device, the mounting hole includes a first hole and a second hole, the inner diameter of the first hole is larger than the inner diameter of the second hole, and the first hole and the second hole communicate to form a stepped hole;

[0013] The second sealing part is disposed in the first hole, and the skeleton abuts the sealing layer against the inner peripheral wall of the first hole;

[0014] The skeleton also abuts the sealing layer against the stepped surface between the first hole and the second hole.

[0015] As a preferred technical solution of the above-mentioned braking device, the outer peripheral wall of the nut is provided with a mounting groove, and the second sealing element is disposed in the mounting groove.

[0016] As a preferred technical solution of the above-mentioned braking device, the first sealing part is provided with a limiting structure, and the cover and / or the nut is provided with a limiting engagement structure, which can prevent the limiting structure from coming out of the cover and the nut.

[0017] As a preferred technical solution of the above-mentioned braking device, the cover body has a groove at one end facing the nut along the axial surface of the nut, and the limiting structure is disposed in the groove.

[0018] As a preferred technical solution of the above-mentioned braking device, one of the cover and the nut is provided with a connecting part, and the other is provided with a connecting hole. The connecting part is inserted into the connecting hole along the axial direction of the nut, and the connecting part is threaded or interference-fitted with the connecting hole.

[0019] As a preferred embodiment of the above-mentioned braking device, the first sealing part abuts against the connecting part.

[0020] As a preferred technical solution of the above-mentioned braking device, the intermediate sealing part includes a plurality of sealing components connected in sequence along the radial direction of the nut, and the plurality of sealing components are folded.

[0021] As a preferred technical solution for the above-mentioned braking device, the frame is made of metal material.

[0022] To achieve the above objectives, a vehicle is also provided, including the braking device described above.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] The braking device and vehicle of this utility model have a first sealing part sandwiched between the cover and the nut, a frame that abuts the sealing layer against the inner wall of the mounting hole, and a middle sealing part that can telescopically connect the first sealing part and the sealing layer. This allows the first sealing part to not only seal the gap between the cover and the nut, but also to form a seal with the outer peripheral wall of the nut, and the sealing layer to form a seal with the inner wall of the mounting hole. At the same time, the second sealing element can seal the gap between the end of the nut away from the cover and the inner wall of the mounting hole, thereby improving the sealing performance of the braking device. Moreover, only two parts, the first sealing element and the second sealing element, need to be assembled, thus reducing the assembly difficulty. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the braking device in an embodiment of the present utility model;

[0026] Figure 2 This is a partial cross-sectional view of the braking device in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the braking device in an embodiment of the present invention;

[0028] Figure 4 This is an exploded view of the braking device in an embodiment of this utility model.

[0029] Figure label:

[0030] 1. Brake caliper; 11. Caliper body; 111. Mounting hole; 1111. First hole; 1112. Second hole; 1113. Stepped surface; 12. Friction plate; 2. Ball screw mechanism; 21. Screw; 22. Nut; 221. Mounting groove; 222. Connecting part; 3. Cover; 31. Groove; 32. Connecting hole; 4. First seal; 41. First sealing part; 411. Limiting block; 42. Intermediate sealing part; 421. Sealing part; 43. Second sealing part; 431. Frame; 432. Sealing layer; 5. Second seal. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] like Figures 1 to 4 As shown, this embodiment provides a braking device and a vehicle. The vehicle includes a braking device, which comprises a brake caliper 1, a ball screw mechanism 2, and a cover 3. The brake caliper 1 includes a caliper body 11 and a friction plate 12. The caliper body 11 has a mounting hole 111. The ball screw mechanism 2 includes a threaded screw 21 and a nut 22. The screw 21 is rotatably disposed in the caliper body 11, and the nut 22 is slidably disposed in the mounting hole 111. One end of the cover 3 is connected to the friction plate 12, and the other end is fixedly connected to the nut 22. Specifically, when the screw 21 rotates, the nut 22 can slide in the mounting hole 111, thereby driving the cover 3 and the friction plate 12 to move, so that the friction plate 12 abuts against the wheel end, and braking force is applied to the wheel end through the friction plate 12.

[0039] The braking device also includes a first seal 4 and a second seal 5. The first seal 4 includes a first sealing part 41, an intermediate sealing part 42, a frame 431, and a second sealing part 43. The first sealing part 41 is sandwiched between the cover 3 and the nut 22. The second sealing part 43 includes a frame 431 and a sealing layer 432 covering the outside of the frame 431. The frame 431 can abut the sealing layer 432 against the inner wall of the mounting hole 111. The intermediate sealing part 42 is telescopically connected between the first sealing part 41 and the sealing layer 432. The second seal 5 is sandwiched between the outer peripheral wall of the nut 22 and the inner wall of the mounting hole 111. The second seal 5 is located at the end of the nut 22 away from the cover 3.

[0040] Specifically, the frame 431 has a ring-shaped structure and is wrapped by the sealing layer 432. During assembly, the second sealing part 43 is pressed into the mounting hole 111, that is, the second sealing part 43 and the mounting hole 111 are press-fitted. After pressing, the frame 431 can press the sealing layer 432 against the inner wall of the mounting hole 111, so that a seal is formed between the sealing layer 432 and the inner wall of the mounting hole 111. It should be noted that the intermediate sealing part 42 is telescopically connected between the first sealing part 41 and the sealing layer 432. That is, the intermediate sealing part 42 can form a seal between the first sealing part 41 and the sealing layer 432, and the intermediate sealing part 42 can extend and retract as the nut 22 moves, thus not interfering with the smooth movement of the nut 22.

[0041] In this embodiment of the braking device, the first sealing part 41 can not only seal the gap between the cover 3 and the nut 22, but also form a seal with the outer peripheral wall of the nut 22. The sealing layer 432 can form a seal with the inner wall of the mounting hole 111. At the same time, the second sealing member 5 can seal the gap between the end of the nut 22 away from the cover 3 and the inner wall of the mounting hole 111, thereby improving the sealing performance of the braking device. Moreover, only the first sealing member 4 and the second sealing member 5 need to be assembled, so as to reduce the assembly difficulty.

[0042] Optionally, the mounting hole 111 includes a first hole 1111 and a second hole 1112. The inner diameter of the first hole 1111 is larger than the inner diameter of the second hole 1112. The first hole 1111 and the second hole 1112 communicate to form a stepped hole. Specifically, the second sealing part 43 is disposed in the first hole 1111, and the frame 431 abuts the sealing layer 432 against the inner peripheral wall of the first hole 1111. The nut 22 is slidably disposed in the second hole 1112. This arrangement avoids interference between the first sealing element 4 and the nut 22, which is beneficial to improving sealing performance and assembly convenience.

[0043] Optionally, the frame 431 also abuts the sealing layer 432 against the stepped surface 1113 between the first hole 1111 and the second hole 1112, thereby limiting the second sealing part 43 through the stepped surface 1113, so as to improve the installation stability of the second sealing part 43 and improve the sealing effect.

[0044] Optionally, the outer peripheral wall of the nut 22 is provided with a mounting groove 221, and the second seal 5 is disposed in the mounting groove 221. This improves the installation stability of the second seal 5 while ensuring the smooth sliding of the nut 22, thus helping to ensure the sealing effect. For example, the second seal 5 is an O-ring.

[0045] Optionally, the first sealing part 41 is provided with a limiting structure, and the cover 3 is provided with a limiting engagement structure. The limiting engagement structure can prevent the limiting structure from dislodging from between the cover 3 and the nut 22. It should be noted that when the nut 22 moves, the first sealing part 41 will move with the nut 22. By preventing the limiting structure from dislodging from between the cover 3 and the nut 22, the installation stability of the first sealing part 41 is improved, thereby ensuring the sealing effect. Of course, in other embodiments, the limiting engagement structure can also be provided on the nut 22, or both the cover 3 and the nut 22 can be provided with limiting engagement structures.

[0046] Optionally, the cover 3 has a groove 31 at one end facing the nut 22 along the axial direction of the nut 22. A limiting structure is located in the groove 31, which can block the first sealing part 41 through the side wall of the groove 31, thus preventing the limiting structure from coming out of the cover 3 and the nut 22. In other words, using the side wall of the groove 31 as a limiting fit structure also simplifies the structure of the braking device and makes it easier to process and assemble. Specifically, the limiting structure is a limiting block 411. During assembly, the limiting block 411 is simply inserted into the groove 31 along the axial direction of the nut 22, and the side wall of the groove 31 can block the limiting block 411, thus preventing the first sealing part 41 from coming out of the cover 3 and the nut 22. The operation is convenient.

[0047] Optionally, the cover 3 has a connecting hole 32 at the end facing the nut 22 along its axial direction, and the nut 22 has a connecting portion 222 at the end facing the cover 3 along its axial direction, so that the connecting portion 222 can be inserted into the connecting hole 32 along the axial direction of the nut 22, and the connecting portion 222 is threadedly connected or interference-fitted with the connecting hole 32. This not only improves the convenience of connecting the cover 3 and the nut 22, but also helps to improve the sealing performance between the cover 3 and the nut 22. Specifically, the connecting portion 222 is a boss. Of course, in other embodiments, the cover 3 may also have a connecting portion 222 at the end facing the nut 22 along its axial direction, and the nut 22 may have a connecting hole 32 at the end facing the cover 3 along its axial direction, with the connecting portion 222 inserted into the connecting hole 32 along the axial direction of the nut 22, and the connecting portion 222 is threadedly connected or interference-fitted with the connecting hole 32.

[0048] Optionally, the first sealing part 41 abuts against the connecting part 222. Specifically, the first sealing part 41 abuts against the cover 3 and the nut 22 on both sides along the axial direction of the nut 22, and the first sealing part 41 abuts against the connecting part 222 on one side along the radial direction of the nut 22, thereby improving the sealing effect of the first sealing part 41.

[0049] Optionally, the intermediate sealing portion 42 includes a plurality of sealing segments 421 connected sequentially along the radial direction of the nut 22. These sealing segments 421 are folded together, allowing the intermediate sealing portion 42 to freely expand and contract as the first sealing portion 41 moves with the nut 22. This improves the reliability of the first seal 4 and extends its service life. Alternatively, the intermediate sealing portion 42 can also be pleated. Compared to a pleated intermediate sealing portion 42, the folded arrangement of the multiple sealing segments 421 results in a more aesthetically pleasing intermediate sealing portion 42.

[0050] Optionally, the skeleton 431 is made of metal, which can provide sufficient compressive force to the sealing layer 432 to ensure that the sealing layer 432 is pressed against the inner wall of the mounting hole 111, thereby improving the sealing effect and sealing reliability.

[0051] For example, the assembly process of the braking device in this embodiment is as follows:

[0052] Insert the limiting block 411 of the first sealing part 41 into the groove 31 along the axial direction of the nut 22, and then insert the connecting part 222 into the connecting hole 32 along the axial direction of the nut 22, and thread the connecting part 222 into the connecting hole 32. This will fix the cover 3 and the nut 22 together. At this time, the cover 3 and the nut 22 clamp and fix the first sealing part 41, so that a seal is formed between one side of the first sealing part 41 and the nut 22 along the axial direction of the nut 22, and a seal is formed between the other side of the first sealing part 41 and the cover 3, thereby forming a seal between the first sealing part 41 and the nut 22. At the same time, the side wall of the groove 31 can block the limiting block 411 to prevent the limiting block 411 from being pulled out of the groove 31 during the movement of the nut 22, thereby ensuring the sealing effect.

[0053] The second sealing part 43 is pressed into the mounting hole 111, and the frame 431 abuts the sealing layer 432 against the inner wall of the mounting hole 111 so that a seal is formed between the sealing layer 432 and the clamp body 11.

[0054] The second sealing element 5 is sleeved on the outside of the nut 22 and installed in the mounting groove 221 so that the second sealing element 5 forms a seal between the inner wall of the mounting hole 111 and the outer peripheral wall of the nut 22.

[0055] In summary, for ease of description, Figure 1 The area within the dashed box is designated as the first area (including the threaded connection between the screw 21 and the nut 22, and the area where other structures are located at the end of the screw 21 away from the friction plate 12), and the area where the mounting hole 111 is located between the first seal 4 and the second seal 5 is designated as the second area.

[0056] In this embodiment of the braking device, when the middle sealing part 42 of the first sealing member 4 is not damaged, the first sealing member 4 and the second sealing member 5 seal the two ends of the mounting hole 111 along its axial direction. At the same time, the first sealing part 41 forms a seal between the cover 3 and the nut 22. That is to say, the second region is sealed to the outside world through the first sealing member 4 and the second sealing member 5, and the first region is sealed to the outside world through the first sealing part 41. The first region and the second region are always isolated from the outside world, thereby ensuring that external impurities, moisture and the like will not enter the interior of the ball screw mechanism 2.

[0057] When the intermediate sealing portion 42 of the first sealing element 4 is damaged, the first sealing portion 41 can still form a seal between the cover 3 and the nut 22. At this time, the first area is still isolated from the outside world, so that external impurities, moisture, etc. cannot enter the interior of the ball screw mechanism 2. Therefore, the ball screw mechanism 2 does not need to be equipped with other sealing structures, and the sealing requirements can be met by relying solely on the first sealing element 4. The braking device of this embodiment not only improves the sealing performance of the interior of the ball screw mechanism 2 and the space within the mounting hole 111, but also reduces the number of sealing components and lowers the assembly difficulty.

[0058] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection 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, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A braking device, characterized by include: Brake caliper (1), including caliper body (11), wherein the caliper body (11) is provided with mounting hole (111); The ball screw mechanism (2) includes a threaded screw (21) and a nut (22), wherein the screw (21) is rotatably disposed in the clamp body (11), and the nut (22) is slidably disposed in the mounting hole (111); Cover (3), one end of which is used to connect with the friction plate (12), and the other end is fixedly connected with the nut (22); The first sealing element (4) includes a first sealing part (41), an intermediate sealing part (42), and a second sealing part (43). The first sealing part (41) is sandwiched between the cover (3) and the nut (22). The second sealing part (43) includes a skeleton (431) and a sealing layer (432) covering the outside of the skeleton (431). The skeleton (431) can abut the sealing layer (432) against the inner wall of the mounting hole (111). The intermediate sealing part (42) is telescopically connected between the first sealing part (41) and the sealing layer (432). The second sealing element (5) is sandwiched between the outer peripheral wall of the nut (22) and the inner wall of the mounting hole (111), and the second sealing element (5) is located at the end of the nut (22) away from the cover (3).

2. The brake device according to claim 1, characterized by The mounting hole (111) includes a first hole (1111) and a second hole (1112). The inner diameter of the first hole (1111) is larger than the inner diameter of the second hole (1112). The first hole (1111) and the second hole (1112) are connected to form a stepped hole. The second sealing part (43) is disposed in the first hole (1111), and the skeleton (431) abuts the sealing layer (432) against the inner peripheral wall of the first hole (1111); The skeleton (431) also abuts the sealing layer (432) against the stepped surface (1113) between the first hole (1111) and the second hole (1112).

3. The brake device according to claim 1, characterized by The outer peripheral wall of the nut (22) is provided with a mounting groove (221), and the second sealing member (5) is provided in the mounting groove (221).

4. The brake device according to claim 1, characterized by The first sealing part (41) is provided with a limiting structure, and the cover (3) and / or the nut (22) are provided with a limiting fit structure. The limiting fit structure can prevent the limiting structure from coming off between the cover (3) and the nut (22).

5. The brake device according to claim 4, characterized in that The cover (3) has a groove (31) at one end of the nut (22) along the axial surface of the nut (22), and the limiting structure is located in the groove (31).

6. The brake device according to claim 1, characterized by One of the cover (3) and the nut (22) is provided with a connecting part (222), and the other is provided with a connecting hole (32). The connecting part (222) is inserted into the connecting hole (32) along the axial direction of the nut (22). The connecting part (222) is threaded or interference-fitted with the connecting hole (32).

7. The brake device according to claim 6, characterized in that The first sealing part (41) abuts against the connecting part (222).

8. The brake device according to any one of claims 1 to 7, characterized by The intermediate sealing part (42) comprises a plurality of sealing subparts (421) connected in sequence along the radial direction of the nut (22), and the plurality of sealing subparts (421) are arranged in a folded manner.

9. The brake device according to any one of claims 1 to 7, characterized by The framework (431) is made of a metal material.

10. Vehicle, characterized in that Braking device comprising a brake device according to any one of claims 1 to 9.

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