Carbon brush cover assembly and ESC motor

Abstract

The utility model discloses a carbon brush cover assembly and an ESC motor. The carbon brush cover assembly comprises a carbon brush cover, a carbon brush box and a plurality of insert terminals. A first mounting cavity is formed in the carbon brush cover, and a plurality of terminal sockets are formed in the bottom end surface; the carbon brush box is arranged in the carbon brush cover and is integrated with the carbon brush cover, and the carbon brush box comprises a box body with a second mounting cavity inside, a carbon brush and a spring which are arranged in the second mounting cavity, and a buckle arranged at a placing opening of the box body; one end of the insertion piece terminal is inserted into the first installation cavity through a terminal socket in the bottom end face of the carbon brush cover. The placing port of the box body of the carbon brush box and the buckle of the carbon brush box have a matched structure, and when the carbon brush cover assembly is in an assembled state, the buckle of the carbon brush box is clamped at the placing port of the box body of the carbon brush box and is tightly connected with the placing port of the box body of the carbon brush box. By changing the internal structure of the carbon brush cover assembly, the manufacturing and mounting cost is reduced, and the strength, the stability and the heat dissipation performance are improved.

Description

Technical Field

[0001] The utility model belongs to the field of carbon brush cover assemblies, and particularly relates to a carbon brush cover assembly and an ESC motor. Background Art

[0002] The following disadvantages exist in the assembly process of the carbon brush cover assembly in the existing ESC motor:

[0003] 1. The carbon brush box in the carbon brush cover assembly is made of metal, and it is a split structure with the carbon brush cover. The installation process of components such as carbon brushes, springs, and buckles in the carbon brush box is complex. It is necessary to first lock the spring with a fixture, then bend and close the metal, and press it against the metal lid. The efficiency is low, and high-temperature operation needs to be maintained, which has safety risks;

[0004] 2. After the components in the carbon brush cover assembly are assembled, the carbon brush box needs to be first installed at the reserved position on the carbon brush cover, and then the two pins are hot-melt locked and equipped with a process ring. The manual operation efficiency is slow, and there is a risk of insufficient strength in the assembled finished product. Summary of the Utility Model

[0005] In view of the above deficiencies of the prior art, the utility model provides a carbon brush cover assembly and an ESC motor.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] In the first aspect, a carbon brush cover assembly is provided, including:

[0008] A carbon brush cover with a first installation cavity inside;

[0009] A carbon brush box, arranged inside the carbon brush cover and integrated with the carbon brush cover, including a box body with a second installation cavity inside, a carbon brush and a spring placed in the second installation cavity, and a buckle arranged at the placement opening of the box body; and

[0010] A plurality of insert terminals, the bottom ends of which are inserted into the first installation cavity from the bottom end face of the carbon brush cover;

[0011] The placement opening of the box body of the carbon brush box and the buckle of the carbon brush box have a matching structure. When the carbon brush cover assembly is in a completed assembly state, the buckle of the carbon brush box is stuck at the placement opening of the box body of the carbon brush box and is tightly connected to it.

[0012] In some embodiments, the outer walls on both sides of the placement opening of the box body of the carbon brush box respectively have symmetric first and second convex portions extending outward from the box body, and symmetric first and second concave openings are respectively arranged on the first and second convex portions.

[0013] In some embodiments, the clip includes a main clip plate, which is arranged at the placement opening of the box body of the carbon brush box, and its outer peripheral edge is the same as the outer peripheral edge of the placement opening of the box body of the carbon brush box, and the two sides of the clip main board are respectively provided with a first side clip plate and a second side clip plate that can be bent along the connection, and the outer peripheral edges of the first side clip plate and the second side clip plate correspond to the outer peripheral edges of the first protrusion and the second protrusion respectively.

[0014] In some embodiments, the top ends of the first side snap plate and the second side snap plate respectively have first and second convex abutment portions that are symmetrical and extend inward; the middle ends of the first side snap plate and the second side snap plate respectively have first and second concave abutment portions that are symmetrical and extend inward;

[0015] When the carbon brush cover assembly is in an assembled state, the first convex abutment is clamped at the front end of the first protrusion, the second convex abutment is clamped at the front end of the second protrusion, the first concave abutment is clamped into the first recess, and the second concave abutment is clamped into the second recess.

[0016] In some embodiments, a plurality of heat dissipation holes are disposed on the top of the plug terminal.

[0017] In some embodiments, a tooth-shaped undercut anti-falling portion is provided on the plug terminal.

[0018] In some embodiments, a spring-type anti-dropping portion is provided on the plug terminal.

[0019] In a second aspect, an ESC motor is provided, comprising: the carbon brush cover assembly described above.

[0020] The beneficial effects of the utility model are: by changing the internal structure of the carbon brush cover assembly, the manufacturing and installation costs are reduced, and the strength, stability and heat dissipation are improved. The utility model only needs to insert the buckle after the carbon brush, spring, process ring, and installation are installed, and then the plug-in terminal is inserted into the carbon brush cover through the clamp to assemble and form. The operation is simple, the efficiency is high, the stability and consistency are good, and it is not affected by factors such as high temperature. In addition, the heat dissipation through-holes on the plug-in terminal can partially release the heat generated when the motor is working to increase the life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 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 labor.

[0022] Figure 1 This is a three-dimensional internal structure diagram of the utility model in one embodiment;

[0023] Figure 2 Internal floor plan of the present utility model in an embodiment;

[0024] Figure 3 External three-dimensional structure diagram of the present utility model in an embodiment;

[0025] Figure 4 External floor plan of the present utility model in an embodiment;

[0026] Figure 5 Elevation cross-sectional view of the carbon brush cover and the carbon brush box of the present utility model in an embodiment;

[0027] Figure 6 Elevation cross-sectional view of the insertion terminal of the present utility model in an embodiment;

[0028] Figure 7 Structure schematic diagram of the buckle of the present utility model in an embodiment;

[0029] Figure 8 Structure schematic diagram of the insertion terminal of the present utility model in an embodiment. Detailed implementation manners

[0030] For a better understanding of the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] As Figures 1-6 shown, the carbon brush cover assembly includes: a carbon brush cover 10, a carbon brush box 20, and an insertion terminal 30.

[0032] The interior of the carbon brush cover 10 has a first installation cavity 101.

[0033] As Figures 1-6 shown, the carbon brush box 20 is disposed inside the carbon brush cover 10 and is an integral structure with the carbon brush cover 10, and includes a box body 201 having a second installation cavity 2016 inside, a carbon brush 202 and a spring 203 placed in the second installation cavity 2016, and a buckle 204 disposed at the placement opening 2011 of the box body 201.

[0034] The placement opening 2011 of the box body 201 of the carbon brush box 20 and the buckle 204 of the carbon brush box 20 have a matching structure. When the carbon brush cover 10 assembly is in a completed assembled state, the buckle 204 of the carbon brush box 20 is stuck at the placement opening 2011 of the box body 201 of the carbon brush box 20 and is tightly connected thereto.

[0035] It can be understood that the original material of the carbon brush box 20 in the prior art is metal and is a split structure with the carbon brush cover 10. The present utility model selects a high-temperature resistant plastic material, and the carbon brush box 20 and the carbon brush cover 10 are integrally injection-molded into an integral structure, which increases the strength and greatly improves the reliability, stability and assembly efficiency of the device.

[0036] As Figures 1-4 shown, in an embodiment, the outer walls on both sides of the placement opening 2011 of the box body 201 of the carbon brush box 20 respectively have a first protrusion 2012 and a second protrusion 2013 that are symmetric and extend outward from the box body 201. First notches 2014 and second notches 2015 are symmetrically arranged on the first protrusion 2012 and the second protrusion 2013 respectively.

[0037] Figure 7 In FIG. 7-1 is a plan view of the main buckle plate 2041, Figure 7-2 is a front view of the buckle 204, Figure 7-3 is Figure 7-2 the H-H sectional view in FIG. As Figures 1-7 shown, in an embodiment, the buckle 204 includes a main buckle plate 2041. The main buckle plate 2041 is arranged at the placement opening 2011 of the box body 201 of the carbon brush box 20, and its outer peripheral edge is the same as the outer peripheral edge of the placement opening 2011 of the box body 201 of the carbon brush box 20. First side buckle plates 2042 and second side buckle plates 2043 that can be bent along the connection are respectively arranged on both sides of the main board of the buckle 204. The outer peripheral edges of the first buckle 204 plate and the second side buckle plate 2043 respectively correspond to the outer peripheral edges of the first protrusion 2012 and the second protrusion 2013.

[0038] In order to enable the buckle 204 to be stuck at the placement opening 2011 of the box body 201 without falling off, in an embodiment, the top ends of the first side buckle plate 2042 and the second side buckle plate 2043 respectively have a first convex abutting portion 2044 and a second convex abutting portion 2045 that are symmetric and extend inward; the middle parts of the first side buckle plate 2042 and the second side buckle plate 2043 respectively have a first concave abutting portion 2046 and a second concave abutting portion 2047 that are symmetric and extend inward; when the carbon brush cover 10 assembly is in the assembled state, the first convex abutting portion 2044 is stuck at the front end of the first protrusion 2012, the second convex abutting portion 2045 is stuck at the front end of the second protrusion 2013, the first concave abutting portion 2046 is snapped into the first notch 2014, and the second concave abutting portion 2047 is snapped into the second notch 2015.

[0039] It is understandable that the above-mentioned locking structure of the buckle 204 is only a preferred embodiment, and other structures can also meet the requirements, as long as the buckle 204 can be naturally locked at the placement opening 2011 of the box body 201 to prevent the carbon brush 202 and spring 203 installed inside the box body 201 from falling.

[0040] A plurality of plug-in terminals have their bottom ends inserted into the first mounting cavity 101 through the bottom end surface 102 of the carbon brush cover 10. In one embodiment, the number of the plug-in terminals is two.

[0041] It is understandable that the plug-in terminal in the prior art is an insert-integrated injection-molded structure. The present invention is changed to a post-insertion type (i.e., the carbon brush cover 10 is injection-molded first, and then the plug-in terminal is inserted with a clamp), which effectively improves the injection molding output and efficiency of the carbon brush cover 10 assembly.

[0042] like Figures 3-4 As shown, in one embodiment, a heat dissipation through hole is provided at the top of the plug terminal. In one embodiment, the number of the heat dissipation through holes is two. In one embodiment, the shape of the heat dissipation through hole is square.

[0043] It is understandable that in the prior art, when the ESC motor is working, the heat is dissipated through the motor casing, and the heat dissipation of the motor is not improved. Therefore, the carbon brush cover 10 assembly in the prior art does not have heat dissipation holes. The utility model opens a square heat dissipation through hole at each of the two plug-in terminals of the carbon brush cover 10, and the two plug-in terminals pass through each other. Under the joint action of the valve body and the control box of the ESC motor, partial heat conduction is achieved through the heat dissipation through hole, that is, the heat dissipation of the motor and other functions are improved.

[0044] To prevent the plug terminal from falling off, Figure 8 As shown, in one embodiment, a tooth-shaped undercut anti-dropping portion is provided on the plug-in terminal. In one embodiment, a spring-type anti-dropping portion is provided on the plug-in terminal.

[0045] In order to ensure that the insertion depth of the plug terminal is sufficient, Figure 2 As shown, in one embodiment, a height positioning column 103 is further provided in the first installation cavity 101 of the carbon brush cover 10 .

[0046] The above description is merely a preferred embodiment of one or more embodiments of the present specification and is not intended to limit one or more embodiments of the present specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present specification shall be included in the scope of protection of one or more embodiments of the present specification.

Claims

1. A carbon brush cover assembly, characterized in that: The carbon brush cover assembly comprises: A carbon brush cover having a first mounting cavity therein; A carbon brush box, which is arranged inside the carbon brush cover and is an integral structure with the carbon brush cover, comprises a box body having a second mounting cavity inside, a carbon brush and a spring placed in the second mounting cavity, and a buckle arranged at a placement opening of the box body; and A plurality of plug-in terminals, the bottom ends of which are inserted into the first mounting cavity through the bottom end surface of the carbon brush cover; The placement opening of the box body of the carbon brush box and the buckle of the carbon brush box have a matching structure. When the carbon brush cover assembly is in an assembled state, the buckle of the carbon brush box is clamped at the placement opening of the box body of the carbon brush box and is tightly connected thereto.

2. The carbon brush cover assembly according to claim 1, characterized in that: The outer walls on both sides of the placement opening of the box body of the carbon brush box respectively have a first protrusion and a second protrusion that are symmetrical and extend outside the box body, and the first protrusion and the second protrusion are respectively symmetrically provided with a first notch and a second notch.

3. The carbon brush cover assembly according to claim 2, characterized in that: The buckle includes a main buckle plate, which is arranged at the placement opening of the box body of the carbon brush box, and its outer peripheral edge is the same as the outer peripheral edge of the placement opening of the box body of the carbon brush box, and the two sides of the buckle main board are respectively provided with a first side buckle plate and a second side buckle plate bent along the connection, and the outer peripheral edges of the first side buckle plate and the second side buckle plate respectively correspond to the outer peripheral edges of the first protrusion and the second protrusion.

4. The carbon brush cover assembly according to claim 3, characterized in that: The top ends of the first side snap plate and the second side snap plate respectively have a first convex abutment portion and a second convex abutment portion that are symmetrical and extend inward; the middle ends of the first side snap plate and the second side snap plate respectively have a first concave abutment portion and a second concave abutment portion that are symmetrical and extend inward; When the carbon brush cover assembly is in an assembled state, the first convex abutment is clamped at the front end of the first protruding portion, the second convex abutment is clamped at the front end of the second protruding portion, the first concave abutment is clamped into the first notch, and the second concave abutment is clamped into the second notch.

5. The carbon brush cover assembly according to claim 1, characterized in that: The top of the plug-in terminal is provided with a plurality of heat dissipation through holes.

6. The carbon brush cover assembly according to claim 1, characterized in that: The plug terminal is provided with a tooth-shaped undercut anti-falling portion.

7. The carbon brush cover assembly according to claim 1, characterized in that: The plug-in terminal is provided with a spring-type anti-dropping portion.

8. An ESC motor, characterized in that: A carbon brush cover assembly comprising any one of claims 1-7.

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