Disc brake lower pump and electric vehicle

Abstract

The utility model provides a disc brake lower pump and an electric vehicle, and relates to the technical field of electric vehicle disc brakes, the disc brake lower pump comprises a first pump body and a second pump body, the first pump body and the second pump body are oppositely arranged, and an installation clamping cavity used for containing a brake pad assembly is formed between the first pump body and the second pump body; an arch-shaped mounting part is integrally arranged at the top of the first pump body, and a mounting hole used for being connected with a shock absorber is formed in the arch-shaped mounting part; the electric vehicle comprises the disc brake lower pump. The arched mounting part is integrally arranged on the first pump body, the disc brake lower pump can be directly mounted on the shock absorber without an adapter bracket, the integral structure is simple, the mounting is convenient, the tolerance between parts is reduced, the precision is more accurate, the parts are reduced, the production cost is saved, the strength of the adapter bracket does not need to be considered, and the production cost is reduced. The installation angle of the disc brake lower pump can be adjusted at will so that the disc brake lower pump can better conform to the mechanics principle, cantilevers are reduced, the strength of the cantilevers is improved, and guarantee is provided for riding safety.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle disc brakes, in particular to a disc brake lower pump and an electric vehicle. Background Art

[0002] At present, the disc brakes of electric vehicles usually squeeze the brake fluid through the disc brake upper pump, so that the brake fluid enters the disc brake lower pump and pushes the piston of the disc brake lower pump to move. The piston movement drives the brake pad to move and rub the disc brake disc, thereby achieving a braking effect.

[0003] Existing electric automatic vehicle disc brake lower pumps (full disc brake type) are usually installed on the shock absorber through an adapter bracket. During installation, this structure has a low fault tolerance rate and is difficult to control tolerance due to the addition of components. Not only is the installation inconvenient and the cost increased, but after a period of use, the adapter bracket may wear and cause the disc brake to loosen, resulting in loose installation, uneven force, easy breakage and other problems. This poses a safety hazard and greatly affects consumers' riding safety and public transportation safety. Utility Model Content

[0004] The purpose of the utility model is to provide a disc brake lower pump and an electric vehicle to solve the technical problems in the prior art that the existing disc brake lower pump is installed through an adapter bracket, which is inconvenient to operate, has a weak structure, and is costly; the preferred technical scheme among the many technical schemes provided by the utility model can produce many technical effects; see the following description for details.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a disc brake lower pump, comprising a first pump body and a second pump body, wherein: the first pump body and the second pump body are arranged opposite to each other, and an installation clamping cavity for accommodating a brake pad assembly is formed between the first pump body and the second pump body; an arched mounting portion is integrally provided on the top of the first pump body, and a mounting hole for connecting a shock absorber is provided on the arched mounting portion.

[0007] Preferably, the arched mounting portion, the mounting hole and the first pump body are integrally formed by casting.

[0008] Preferably, a dust cover is detachably provided on the top side of the mounting clamp cavity, and the dust cover is located below the arched mounting portion.

[0009] Preferably, a clamping portion is provided on both the first pump body and the second pump body, a clamping portion is provided on the dust cover at a position corresponding to the clamping portion, and the clamping portion is clamped and connected with the clamping portion.

[0010] Preferably, a first fixing hole is provided on the first pump body, and a second fixing hole is provided on the second pump body at a position corresponding to the first fixing hole; a threaded fastener passes through the corresponding first fixing hole and the second fixing hole to relatively connect the first pump body and the second pump body.

[0011] Preferably, piston holes for installing corresponding lower pump pistons are arranged on the inner side surfaces of the first pump body and the second pump body respectively; and sealing grooves are arranged in the piston holes.

[0012] Preferably, the disc brake lower pump includes a connecting assembly, and the brake pad assembly is arranged in the mounting clamp cavity through the connecting assembly.

[0013] Preferably, the connecting assembly includes a guide pin and a plug pin, a first connecting hole is provided on the first pump body, and a second connecting hole is provided on the second pump body at a position corresponding to the first connecting hole, wherein: the plug end of the guide pin passes through the first connecting hole and the second connecting hole; and the plug pin is plugged into the plug end of the guide pin.

[0014] Preferably, the brake pad assembly includes two brake shoes, wherein: the two brake shoes are relatively arranged in the mounting clamp cavity, and are respectively connected to the corresponding lower pump pistons, and a clamping gap for accommodating the disc brake disc is formed between the two brake shoes; a guide hole is provided on the brake shoe, and the guide pin passes through the guide hole and slides with the guide hole.

[0015] The utility model provides an electric vehicle, comprising any one of the above-mentioned disc brake lower pumps.

[0016] The utility model provides a disc brake lower pump and an electric vehicle which have at least the following beneficial effects:

[0017] The disc brake lower pump includes a first pump body and a second pump body. The first pump body and the second pump body are arranged opposite to each other, and an installation cavity is formed therebetween. The installation cavity is used for accommodating and installing a brake pad assembly. The brake pad assembly cooperates with the disc brake disc to realize braking of the electric vehicle.

[0018] An arched mounting portion is integrally provided on the top of the first pump body, and a mounting hole is provided on the arched mounting portion. During installation, the mounting bolt of the shock absorber passes through the mounting hole, thereby connecting the shock absorber to the first pump body, thereby realizing the connection between the disc brake lower pump and the shock absorber.

[0019] The utility model can fix the disc brake lower pump to the shock absorber through the arched mounting part integrally arranged on the first pump body without the need for an adapter bracket. It is not only firmly fixed and evenly stressed, but also not prone to breakage, and is easy to install with low raw material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0023] Figure 3 It is an exploded schematic diagram of the utility model;

[0024] Figure 4 It is an enlarged view of the A part of the utility model;

[0025] Figure 5 It is an enlarged view of part B of the utility model;

[0026] Figure 6 It is an enlarged view of the C portion of the present utility model.

[0027] Reference numerals

[0028] 1. First pump body; 11. Arched mounting portion; 111. Mounting hole; 12. First fixing hole; 13. Piston hole; 14. Sealing groove; 15. First connecting hole; 2. Second pump body; 21. Second fixing hole; 22. Second connecting hole; 23. Clamping portion; 3. Brake pad assembly; 31. Brake shoe; 311. Guide hole; 4. Mounting clamp cavity; 5. Connecting assembly; 51. Guide pin; 52. Latch pin; 6. Dust cover; 61. Clamping portion; 7. Lower pump piston. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] The utility model provides a disc brake lower pump, referring to Figure 1-Figure 3 As shown, the disc brake lower pump includes a first pump body 1 and a second pump body 2.

[0032] The first pump body 1 and the second pump body 2 are arranged opposite to each other, and a mounting clamping cavity 4 is formed between the first pump body 1 and the second pump body 2 . The mounting clamping cavity 4 is used for accommodating and installing the brake pad assembly 3 .

[0033] An arched mounting portion 11 is integrally provided on the top of the first pump body 1 , and a mounting hole 111 for connecting a shock absorber is provided on the arched mounting portion 11 .

[0034] During installation, the mounting bolts of the shock absorber pass through the mounting holes 111 , thereby connecting the disc brake lower pump to the shock absorber, and the brake pad assembly 3 is located on both sides of the disc brake disc.

[0035] During braking, the brake pad assembly 3 rubs against the friction surface of the disc brake disc, thereby achieving braking.

[0036] The utility model has a significant braking effect by setting the brake pad assembly 3 in the installation clamp cavity 4. The arched installation part 11 is integrally arranged on the top of the first pump body 1, and the installation of the shock absorber and the disc brake lower pump can be achieved without a switching bracket. Not only is the installation firm and the force is evenly applied, it is not easy to break, but the installation operation is convenient and the manufacturing and use costs are low.

[0037] Embodiment 2:

[0038] Example 2 is based on Example 1:

[0039] like Figure 1-Figure 3 As shown, the arched mounting portion 11, the mounting hole 111 and the first pump body 1 are integrally formed by casting.

[0040] The pump body is formed by a casting process, has a firm structure, and has a relatively low manufacturing cost, and is suitable for mass production.

[0041] As an optional implementation, a dust cover 6 is detachably provided on the top side of the mounting clamp cavity 4 , and the dust cover 6 is located below the arched mounting portion 11 .

[0042] The dust cover 6 has a good dustproof effect and can effectively prevent dust from entering the pump body.

[0043] As an optional implementation, Figure 3-Figure 5 As shown, a snap-fitting portion 23 is provided on both the first pump body 1 and the second pump body 2, and a snap-fitting portion 61 is provided on the dust cover 6 at a position corresponding to the snap-fitting portion 23, and the snap-fitting portion 61 is snap-fitted and connected to the snap-fitting portion 23, thereby covering the upper cavity opening of the mounting clamp cavity 4.

[0044] The engaging portion 23 is configured as an engaging groove, which is opened on the outer wall of the pump body. The engaging portion 23 of the first pump body 1 and the engaging portion 23 on the second pump body 2 are arranged back to back. The engaging portion 61 is configured as a engaging block, and the engaging block is adapted to the position and shape of the engaging groove. A engaging structure is adopted, which is simple and firm in structure, and convenient for assembly and disassembly.

[0045] As an optional implementation, Figure 3 As shown, a first fixing hole 12 is provided on the first pump body 1 , and a second fixing hole 21 is provided on the second pump body 2 at a position corresponding to the first fixing hole 12 .

[0046] The threaded fasteners pass through the corresponding first fixing holes 12 and the second fixing holes 21 , thereby connecting the first pump body 1 and the second pump body 2 relative to each other.

[0047] The number of the first fixing holes 12 and the second fixing holes 21 is set to two, and the number of the threaded fasteners is set to two and symmetrically distributed, so as to further improve the connection stability between the first pump body 1 and the second pump body 2 .

[0048] As an optional implementation, Figure 3 As shown, piston holes 13 are arranged opposite to each other on the inner side surface of the first pump body 1 and the inner side surface of the second pump body 2 , and the piston holes 13 are used for the installation of the corresponding lower pump piston 7 .

[0049] A sealing groove 14 is provided in the piston hole 13, and a rectangular sealing ring is installed between the sealing groove 14 and the lower pump piston 7, which has a sealing effect on the one hand and enables the piston to return to its initial position after the piston is braked on the other hand.

[0050] As an optional implementation, Figure 3 and Figure 6 As shown, the disc brake lower pump includes a connecting assembly 5, and the brake pad assembly 3 is arranged in the mounting clamp cavity 4 through the connecting assembly 5.

[0051] The connecting assembly 5 includes a guide pin 51 and a plug pin 52. A first connecting hole 15 is provided on the first pump body 1, and a second connecting hole 22 is provided on the second pump body 2 at a position corresponding to the first connecting hole 15. The plug end of the guide pin 51 passes through the first connecting hole 15 and the second connecting hole 22. A pin hole is radially penetrated at the end of the guide pin 51. The plug pin 52 adopts an R-type cotter pin, which is plugged into the pin hole.

[0052] As an optional implementation, Figure 3 As shown, the brake pad assembly 3 includes two brake shoes 31 .

[0053] The two brake shoes 31 are arranged opposite to each other in the mounting clamp cavity 4 and are respectively connected to the corresponding lower pump pistons 7 , and a clamping gap for accommodating the disc brake disc is formed between the two brake shoes 31 .

[0054] The brake shoe 31 is provided with a guide hole 311 , and the guide pin 51 passes through the guide hole 311 and is slidably matched with the guide hole 311 .

[0055] A fluid inlet hole is provided on the side of the first pump body 1. During braking, the brake fluid enters the sealed space of the pump body through the fluid inlet hole, pushing the piston. The brake shoe 31 slides along the guide pin 51 under the push of the piston and adheres to the disc brake to generate braking friction.

[0056] In order to further improve the stability of the movement process of the brake shoe 31 , guide grooves adapted to the corresponding brake shoe 31 are provided on the inner side surfaces of the first pump body 1 and the second pump body 2 .

[0057] Example 3

[0058] Example 3 is based on Example 2:

[0059] The utility model provides an electric vehicle, which comprises the disc brake lower pump.

[0060] The utility model has an arched mounting portion 11 integrally arranged on the first pump body 1, and the disc brake lower pump can be directly installed on the shock absorber without an adapter bracket. The overall structure is simple and the installation is convenient. It not only reduces the tolerance between parts to make the precision more accurate, but also reduces the parts and saves production costs. At the same time, there is no need to consider the strength of the adapter bracket, and the installation angle of the disc brake lower pump can be adjusted at will to make it more in line with the principle of mechanics, so as to reduce the cantilever and increase its strength, thereby providing protection for riding safety.

[0061] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A disc brake lower pump, characterized in that: It comprises a first pump body and a second pump body, wherein: The first pump body and the second pump body are arranged opposite to each other, and a mounting clamping cavity for accommodating the brake pad assembly is formed between the first pump body and the second pump body; An arched mounting portion is integrally provided on the top of the first pump body, and a mounting hole for connecting a shock absorber is provided on the arched mounting portion.

2. The disc brake lower pump according to claim 1, characterized in that: The arched mounting portion, the mounting hole and the first pump body are integrally formed by casting.

3. The disc brake lower pump according to claim 1, characterized in that: A dust cover is detachably provided on the top side of the mounting clamp cavity, and the dust cover is located below the arched mounting portion.

4. The disc brake lower pump according to claim 3, characterized in that: The first pump body and the second pump body are both provided with a clamping portion, and the dust cover is provided with a clamping portion at a position corresponding to the clamping portion, and the clamping portion is clamped and connected with the clamping portion.

5. The disc brake lower pump according to claim 1, characterized in that: The first pump body is provided with a first fixing hole, and the second pump body is provided with a second fixing hole at a position corresponding to the first fixing hole; The threaded fastener passes through the corresponding first fixing hole and the second fixing hole to relatively connect the first pump body and the second pump body.

6. The disc brake lower pump according to claim 1, characterized in that: The inner side surface of the first pump body and the inner side surface of the second pump body are oppositely provided with piston holes for installing corresponding lower pump pistons; A sealing groove is arranged in the piston hole.

7. The disc brake lower pump according to claim 1, characterized in that: The disc brake lower pump comprises a connecting assembly, and the brake pad assembly is arranged in the mounting clamp cavity through the connecting assembly.

8. The disc brake lower pump according to claim 7, characterized in that: The connecting assembly includes a guide pin and a plug pin, the first pump body is provided with a first connecting hole, and the second pump body is provided with a second connecting hole at a position corresponding to the first connecting hole, wherein: The plug-in end of the guide pin passes through the first connecting hole and the second connecting hole; The plug pin is plugged into the plug-in end of the guide pin.

9. The disc brake lower pump according to claim 8, characterized in that: The brake pad assembly comprises two brake shoes, wherein: The two brake shoes are arranged opposite to each other in the mounting clamp cavity and are respectively connected to the corresponding lower pump pistons, and a clamping gap for accommodating the disc brake disc is formed between the two brake shoes; The brake shoe is provided with a guide hole, and the guide pin passes through the guide hole and is slidably matched with the guide hole.

10. An electric vehicle, characterized in that: The invention comprises the disc brake lower pump according to any one of claims 1 to 9.

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