Disc brake support and electric vehicle

Abstract

The application provides a disc brake support and an electric vehicle, and relates to the field of electric vehicles. The disc brake support comprises a support plate and a bushing. The support plate has a mounting surface and a non-mounting surface distributed along the thickness direction of the support plate, and a riveting hole penetrating from the mounting surface to the non-mounting surface. The bushing comprises a riveting part and an assembling part. One end of the riveting part is riveted into the riveting hole from the non-mounting surface, and the other end is connected with the assembling part. The outer diameter of the riveting part is smaller than that of the assembling part. A groove is formed between the end face of the riveting part away from the assembling part and the inner circumferential wall of the riveting hole, and is connected by a first laser welding. The end face of the assembling part close to the riveting part abuts against the non-mounting surface, and the outer wall of the assembling part is connected with the non-mounting surface by a second laser welding. The disc brake support provided by the application solves the technical problem of low size precision of the iron plate support in the prior art.

Description

Technical Field

[0001] This application relates to the field of electric vehicles, and more specifically, to a disc brake bracket and an electric vehicle. Background Technology

[0002] Currently, electric vehicle disc brake brackets on the market are divided into two types: aluminum alloy casting brackets and iron plate brackets. Traditional iron plate brackets are made by manufacturing the iron plate and bushing separately and then welding them together. Iron plate brackets assembled by welding have low dimensional accuracy, which can easily lead to abnormal noise from the disc brake rubbing against the disc, affecting the riding experience. Utility Model Content

[0003] The purpose of this application is to provide a disc brake bracket and an electric vehicle to alleviate the technical problem of low dimensional accuracy of steel plate brackets in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: Firstly, the disc brake bracket provided by this utility model includes a bracket plate and a bushing; The bracket plate has mounting surfaces and non-mounting surfaces distributed along the thickness direction of the bracket plate, and riveting holes extending from the mounting surfaces to the non-mounting surfaces; The bushing includes a riveting part and an assembly part. One end of the riveting part is riveted from the non-mounting surface into the riveting hole, and the other end is connected to the assembly part. The outer diameter of the riveting part is smaller than the outer diameter of the assembly part. A groove is formed between the end face of the riveting part away from the assembly part and the inner peripheral wall of the riveting hole, and they are connected by a first laser weld bead; the end face of the assembly part near the riveting part abuts against the non-installation surface, and the outer wall is connected to the non-installation surface by a second laser weld bead.

[0005] Furthermore, the outer wall of the assembly part opposite to the riveting part is provided with an outwardly extending connecting protrusion.

[0006] Furthermore, the outer wall of the riveting part near the assembly part is provided with a clearance groove, and / or the peripheral wall of the riveting hole is connected to the non-mounting surface by a first inclined transition.

[0007] Furthermore, the end face of the assembly part facing away from the riveting part is parallel to the mounting surface.

[0008] Furthermore, the bushing has a through hole extending through the mounting portion and the riveting portion along the thickness direction of the bracket plate, and the axis of the through hole is perpendicular to the mounting surface.

[0009] Furthermore, the thickness of the first laser weld bead is less than or equal to the depth of the groove.

[0010] Furthermore, the end face of the riveting part away from the assembly part is connected to the outer wall of the riveting part by a second inclined surface.

[0011] Furthermore, the end face of the assembly part near the riveting part is connected to the outer wall of the assembly part by a third inclined surface.

[0012] Furthermore, the bracket plate has a threaded hole that extends from the mounting surface to the non-mounting surface and is spaced apart from the riveting hole.

[0013] Secondly, the electric vehicle provided by this utility model includes a disc brake bracket as described in any of the above claims.

[0014] Based on the above technical solutions, the technical effects achievable by this utility model can be analyzed as follows: The disc brake bracket provided by this utility model includes a bracket plate and a bushing; the bracket plate has mounting surfaces and non-mounting surfaces distributed along the thickness direction of the bracket plate, and a riveting hole extending from the mounting surface to the non-mounting surface; the bushing includes a riveting part and an assembly part, one end of the riveting part is riveted into the riveting hole from the non-mounting surface, and the other end is connected to the assembly part, the outer diameter of the riveting part is smaller than the outer diameter of the assembly part; a groove is formed between the end face of the riveting part away from the assembly part and the inner peripheral wall of the riveting hole, and they are connected by a first laser weld; the end face of the assembly part near the riveting part abuts against the non-mounting surface, and the outer wall is connected to the non-mounting surface by a second laser weld.

[0015] The flatness of the mounting surface of the bracket plate is higher than that of the non-mounting surface. The riveting holes penetrate along the thickness of the bracket plate, allowing the riveting part of the bushing to be riveted into the riveting holes, thus achieving an interference fit between the riveting part and the riveting holes. Because the riveting holes and the riveting part are interference-fitted, the interference fit tolerance is met, achieving the first assembly and fixing of the bracket plate and bushing. The riveting part is connected to the inner wall of the riveting hole by a first laser weld bead, which is located within a groove to prevent the weld bead from protruding from the mounting surface and affecting the flatness of the bracket plate's mounting surface, thereby preventing disc brake rubbing noise. The assembly part is connected to the non-mounting surface by a second laser weld bead, strengthening the connection between the bushing and the bracket plate without affecting the flatness of the mounting surface. The first and second laser weld bead achieve the second assembly and fixing of the bracket plate and bushing.

[0016] In this disc brake bracket, the bracket plate and bushing are first fastened together by interference fit and riveting, and then connected by laser welding process, resulting in high connection strength and high positional accuracy. In addition, the bracket plate has opposite mounting surfaces and non-mounting surfaces. Subsequent processing or assembly is based on the mounting surfaces, which unifies the benchmark, improves installation accuracy, and avoids disc brake rubbing noise malfunctions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the disc brake bracket provided in the embodiments of this application; Figure 2 for Figure 1 Cross-sectional view at point AA; Figure 3 for Figure 2 A magnified view of a section at point B in the middle; Figure 4 This is a schematic diagram of the structure of the bracket plate in the disc brake bracket provided in the embodiments of this application; Figure 5 for Figure 4 Cross-sectional view at CC; Figure 6 This is a schematic diagram of the structure of the bushing in the disc brake bracket provided in an embodiment of this application; Figure 7 for Figure 6 Cross-sectional view at point DD.

[0019] icon: 100 - Bracket plate; 110 - Riveting hole; 120 - Mounting surface; 130 - Non-mounting surface; 140 - Threaded hole; 200 - Bushing; 210 - Riveting part; 211 - Clearance groove; 220 - Assembly part; 221 - Connecting protrusion; 230 - Through hole; 300-groove; 410 - First laser weld bead; 420 - Second laser weld bead. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] In the description of this application, it should be noted that the terms "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 is in use. They are used only for the convenience of describing this application 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 application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Example 1 In existing technologies, the dimensional accuracy of iron plate brackets assembled by welding is low, which can easily lead to abnormal noise from disc brakes rubbing against the disc.

[0024] In view of this, see Figures 1 to 3 The disc brake bracket provided in this embodiment includes a bracket plate 100 and a bushing 200; the bracket plate 100 has a mounting surface 120 and a non-mounting surface 130 distributed along the thickness direction of the bracket plate 100, and a riveting hole 110 extending from the mounting surface 120 to the non-mounting surface 130; the bushing 200 includes a riveting portion 210 and an assembly portion 220, one end of the riveting portion 210 being riveted from the non-mounting surface 130 into the riveting hole 110, and the riveting portion 210... The riveting part 210 is interference-fitted with the riveting hole 110, and the other end is connected to the assembly part 220. The outer diameter of the riveting part 210 is smaller than the outer diameter of the assembly part 220. A groove 300 is formed between the end face of the riveting part 210 away from the assembly part 220 and the inner peripheral wall of the riveting hole 110, and they are connected by the first laser weld 410. The end face of the assembly part 220 near the riveting part 210 abuts against the non-mounting surface 130, and the outer wall is connected to the non-mounting surface 130 by the second laser weld 420.

[0025] Specifically, further, the length of the riveting part 210 is less than the depth of the riveting hole 110, so that when the riveting part 210 is pressed against the riveting hole 110, a groove 300 can be formed between the riveting part 210 and the riveting hole 110.

[0026] The flatness of the mounting surface 120 of the bracket plate 100 is higher than that of the non-mounting surface 130. The riveting hole 110 penetrates along the thickness direction of the bracket plate 100 and is used for interference fit with the riveting part 210 of the bushing 200. Because the riveting hole 110 and the riveting part 210 are interference fitted, the interference fit tolerance is met, and the bracket plate 100 and the bushing 200 are fixed together for the first time. The riveting part 210 is connected to the inner wall of the riveting hole 110 by the first laser weld 410, and the first laser weld 410 is located in the groove 300 to prevent the weld from protruding from the mounting surface 120 and affecting the flatness of the mounting surface 120 of the bracket plate 100, thereby avoiding disc brake rubbing noise fault; the assembly part 220 is connected to the non-mounting surface 130 by the second laser weld 420, which strengthens the connection strength between the bushing 200 and the bracket plate 100, and does not affect the flatness of the mounting surface 120; the first laser weld 410 and the second laser weld 420 realize the second combination to fix the bracket plate 100 and the bushing 200.

[0027] In this disc brake bracket, the bracket plate 100 and the bushing 200 are first fastened together by interference fit and riveting, and then connected by laser welding process, resulting in high connection strength and high positional accuracy. Furthermore, the bracket plate 100 has a mounting surface 120 and a non-mounting surface 130, and subsequent processing or assembly is based on the mounting surface 120, which unifies the benchmark, improves installation accuracy, and avoids disc brake rubbing noise malfunction.

[0028] The following is a detailed description of the shape of the disc brake bracket: In the optional solutions provided by the embodiments of this utility model, see Figure 6 and Figure 7 The outer wall of the assembly part 220 away from the riveting part 210 is provided with an outwardly extending connecting protrusion 221.

[0029] Specifically, the riveting portion 210, the assembly portion 220, and the connecting protrusion 221 are integrally formed. The connecting protrusion 221 increases the cross-sectional area of ​​the assembly portion 220 away from the riveting portion 210. Of course, the solution of increasing the wall thickness of the assembly portion 220 to increase the end face area of ​​the assembly portion 220 away from the riveting portion 210 should also be within the protection scope of this utility model embodiment.

[0030] When the disc brake bracket is installed on the vehicle, the parts on the vehicle that cooperate with the disc brake bracket will clamp the mounting surface 120 of the bracket plate 100 and the end face of the assembly part 220 away from the riveting part 210. Because the connecting protrusion 221 increases the cross-sectional area of ​​the assembly part 220 away from the riveting part 210, the clamping contact surface is increased, the installation clamping reliability is improved, the installation accuracy of the disc brake of the whole vehicle is improved, and the abnormal noise of disc brake rubbing is avoided.

[0031] In the optional solutions provided in this utility model embodiment, the outer wall of the riveting part 210 near the assembly part 220 is provided with a relief groove 211, and / or, the peripheral wall of the riveting hole 110 and the non-installation surface 130 are connected by a first inclined surface transition.

[0032] In this embodiment, the outer wall of the riveting part 210 near the assembly part 220 is provided with a clearance groove 211.

[0033] The outer wall of the riveting part 210 is provided with a relief groove 211, or the peripheral wall of the riveting hole 110 is connected to the non-mounting surface 130 by a first inclined surface, which can make the end face of the assembly part 220 fit with the non-mounting surface 130, avoiding the problem that the end face of the assembly surface cannot fit completely with the non-mounting surface 130 due to the slight rounded corners of the right angle surface, thereby achieving complete riveting.

[0034] In the optional solution provided by this utility model embodiment, the end face of the assembly part 220 facing away from the riveting part 210 is parallel to the mounting surface 120.

[0035] Specifically, in this embodiment, the bushing 200 and the bracket plate 100 are first riveted and laser-welded to form an assembly, and then the assembly is processed. When processing the assembly, the mounting surface 120 of the bracket plate 100 is used as a reference, and the assembly is clamped and fixed in one go to complete the processing of the end face of the assembly part 220 away from the riveting part 210, so as to ensure the parallelism between the mounting surface 120 and the end face of the assembly part 220 away from the riveting part 210.

[0036] Because the end face of the assembly part 220 facing away from the riveting part 210 is parallel to the mounting surface 120, the disc brake bracket can ensure the installation accuracy of the disc brake of the whole vehicle after it is installed, and avoid the disc brake rubbing noise fault caused by the difference in dimensional accuracy.

[0037] In the optional embodiment of this utility model, the bushing 200 has a through hole 230 that passes through the assembly part 220 and the riveting part 210 along the thickness direction of the bracket plate 100, and the axis of the through hole 230 is perpendicular to the mounting surface 120.

[0038] Specifically, in this embodiment, the bushing 200 is first riveted and laser-welded to the bracket plate 100 to form an assembly, and then the assembly is processed. When processing the assembly, the mounting surface 120 of the bracket plate 100 is used as a reference, and the assembly is clamped and fixed in one go to complete the processing of the through hole 230, so as to ensure the perpendicularity of the mounting surface 120 and the axis of the through hole 230.

[0039] Because the axis of the through hole 230 is perpendicular to the mounting surface 120, the disc brake bracket can ensure the installation accuracy of the disc brake of the whole vehicle after it is installed, and avoid the disc brake rubbing noise fault caused by poor dimensional accuracy.

[0040] In the optional solution provided by this utility model embodiment, both the first laser weld bead 410 and the second laser weld bead 420 are annular.

[0041] Specifically, the support plate 100 and bushing 200 are generally made of iron profiles, such as Q235A or Q235B and other metal materials. The first laser weld bead 410 surrounds the inside of the riveting hole 110, and the second laser weld bead 420 surrounds the outer periphery of the assembly part 220.

[0042] The first laser weld bead 410 and the second laser weld bead 420 ensure the connection strength between the support plate 100 and the bushing 200. Of course, spot welding or single-sided circumferential welding should also be within the protection scope of this utility model embodiment.

[0043] In the optional solution provided by this utility model embodiment, the thickness of the first laser weld bead 410 is less than or equal to the depth of the groove 300.

[0044] Specifically, the first laser weld bead 410 is formed by a laser welding process. It is worth noting that the thickness of the first laser weld bead 410 refers to the dimension along the axial direction of the groove 300.

[0045] The thickness of the first laser weld bead 410 is less than or equal to the depth of the groove 300, so as to prevent the first laser weld bead 410 from protruding from the mounting surface 120 and affecting the flatness of the mounting surface 120.

[0046] In the optional solution provided by this utility model embodiment, the end face of the riveting part 210 away from the assembly part 220 is connected to the outer wall of the riveting part 210 by a second inclined surface.

[0047] The second bevel helps the riveting part 210 to be pressed into the riveting hole 110.

[0048] In the optional embodiment of this utility model, the end face of the assembly part 220 near the riveting part 210 is connected to the outer wall of the assembly part 220 by a third inclined surface.

[0049] The third slope avoids the problem that the contact area between the assembly part 220 and the non-mounting surface 130 is too large, which could prevent the assembly part 220 from fully fitting the non-mounting surface 130 due to impurities or particles.

[0050] In the optional solutions provided by the embodiments of this utility model, see Figure 4 and Figure 5 The bracket plate 100 has a threaded hole 140, which extends from the mounting surface 120 to the non-mounting surface 130 along the thickness direction of the bracket plate 100, and is spaced apart from the riveting hole 110.

[0051] Specifically, the threaded hole 140 is provided with an internal thread, and there are multiple threaded holes 140. The multiple threaded holes 140 are spaced apart.

[0052] The threaded hole 140 is used for mating and connecting with other parts.

[0053] The following details the manufacturing process of the disc brake bracket: Pre-assembly processing: The support plate 100 is cut into a predetermined shape using laser or mold, and then machined by a CNC machine tool to complete the machining of the mounting surface 120 and the riveting holes; the threaded holes 140 can be machined simultaneously or subsequently. The bushing 200 is cold-forged with a mold or cut to a predetermined length from tubing, and then machined by a CNC machine tool to complete the machining of the outer circle of the riveting part 210 and the clearance groove 211. The CNC machined surface exhibits high flatness, outer circle regularity, and groove precision.

[0054] First assembly: riveting; The riveting part 210 of the bushing 200 is pressed into the riveting hole from the non-mounting surface 130 side of the bracket plate 100. In the final stage of riveting the bracket plate 100 and the bushing 200, the relief groove 211 of the bushing 200 can make the riveting completely in place, and will not fail to be riveted in place due to the presence of slight rounded corners on the right angle surface.

[0055] Second assembly: welding; Then, the bracket plate 100 and bushing 200 are processed and welded using laser welding technology on both sides to form a first laser weld 410 and a second laser weld 420 in annular shape. The first laser weld 410 and the second laser weld 420 are small and have an aesthetically pleasing appearance, and will not cause interference during vehicle installation due to the weld being too large.

[0056] Post-assembly processing: Using the mounting surface 120 of the bracket plate 100 as a reference, the disc brake bracket is clamped and fixed in one go, completing the machining of the through hole 230 and the end face of the assembly part 220 away from the riveting part 210. In the machined disc brake bracket, the parallelism between the mounting surface 120 and the end face of the assembly part 220 away from the riveting part 210 is high, and the perpendicularity between the axis of the through hole 230 and the mounting surface 120 is high. After the assembled and machined disc brake bracket is installed in the vehicle, the high dimensional accuracy of the disc brake bracket can ensure the installation accuracy of the entire vehicle's disc brake, avoiding disc brake rubbing noise faults caused by poor dimensional accuracy.

[0057] Installed into the vehicle: Install the through hole 230 onto the mating mounting shaft. After the vehicle is assembled, there will be a tilting phenomenon because the mounting shaft and the through hole 230 are clearance fit; however, when the disc brake bracket is installed, the parallelism of the mounting surface 120 and the end face of the assembly part 220 away from the riveting part 210 is high. After clamping, it will improve the parallelism between the disc brake surface and the brake disc surface. Furthermore, because the bushing 200 has a connecting protrusion 221, it increases the clamping contact surface and improves the reliability of installation and clamping, further ensuring the parallelism of the end face of the mounting surface 120 and the assembly part 220 away from the riveting part 210. Therefore, the installation accuracy of the disc brake of the whole vehicle will be further improved, which is another guarantee to avoid the disc brake rubbing noise.

[0058] Example 2 The electric vehicle provided in this embodiment includes the disc brake bracket in Embodiment 1, and therefore also possesses all the beneficial effects described in Embodiment 1, which will not be repeated here.

[0059] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A disc brake bracket, characterized in that, include: Support plate (100) and bushing (200); The bracket plate (100) has a mounting surface (120) and a non-mounting surface (130) distributed along the thickness direction of the bracket plate (100), and a riveting hole (110) extending from the mounting surface (120) to the non-mounting surface (130). The bushing (200) includes a riveting part (210) and an assembly part (220). One end of the riveting part (210) is riveted from the non-mounting surface (130) into the riveting hole (110), and the other end is connected to the assembly part (220). The outer diameter of the riveting part (210) is smaller than the outer diameter of the assembly part (220). The end face of the riveting part (210) facing away from the assembly part (220) forms a groove (300) between the inner peripheral wall of the riveting hole (110) and is connected by a first laser weld (410); the end face of the assembly part (220) near the riveting part (210) abuts against the non-installation surface (130), and the outer wall is connected to the non-installation surface (130) by a second laser weld (420).

2. The disc brake bracket according to claim 1, characterized in that, The outer wall of the assembly part (220) opposite to the riveting part (210) has an outwardly extending connecting protrusion (221).

3. The disc brake bracket according to claim 1, characterized in that, The outer wall of the riveting part (210) near the assembly part (220) is provided with a relief groove (211), and / or the peripheral wall of the riveting hole (110) and the non-mounting surface (130) are connected by a first inclined surface transition.

4. The disc brake bracket according to claim 1, characterized in that, The end face of the assembly part (220) facing away from the riveting part (210) is parallel to the mounting surface (120).

5. The disc brake bracket according to claim 4, characterized in that, The bushing (200) has a through hole (230) that passes through the assembly part (220) and the riveting part (210) along the thickness direction of the bracket plate (100), and the axis of the through hole (230) is perpendicular to the mounting surface (120).

6. The disc brake bracket according to claim 1, characterized in that, The thickness of the first laser weld bead (410) is less than or equal to the depth of the groove (300).

7. The disc brake bracket according to claim 1, characterized in that, The end face of the riveting part (210) away from the assembly part (220) is connected to the outer wall of the riveting part (210) by a second inclined surface.

8. The disc brake bracket according to claim 1, characterized in that, The end face of the assembly part (220) near the riveting part (210) is connected to the outer wall of the assembly part (220) by a third inclined surface.

9. The disc brake bracket according to any one of claims 1-8, characterized in that, The bracket plate (100) has a threaded hole (140) that extends from the mounting surface (120) to the non-mounting surface (130) and is spaced apart from the riveting hole (110).

10. An electric vehicle, characterized in that, Includes the disc brake bracket as described in any one of claims 1-9.

Images