Four-pole four-carbon-brush plastic support structure

Abstract

The utility model provides a four-pole four-carbon-brush plastic support structure, which comprises a support and carbon brushes, at least two conducting strips are embedded in the support, each conducting strip is provided with an electric connecting part, and the electric connecting parts extend out of the support and serve as a main wiring end; an even number of mounting hole groups are uniformly distributed in the circumferential direction of the support, each mounting hole group comprises two strip-shaped holes which are arranged in parallel and penetrate through the two end surfaces of the support, wiring grooves as many as the mounting hole groups are formed in the upper surface of the support, and the wiring grooves enable part of the upper surface of the conducting strip to be exposed and serve as wiring ends of the carbon brush; the carbon brush comprises a carbon brush shell and a carbon brush body arranged in the carbon brush shell, a clamping jaw is arranged on the bottom face of the carbon brush shell, the clamping jaw penetrates through the strip-shaped hole from top to bottom and then is bent and fixed, a wire is arranged on the carbon brush body, and the wire is fixed in the wiring groove through welding and is electrically connected with the conducting strip. The four-pole four-carbon-brush plastic support structure is compact in structure, convenient in wiring, high in use reliability and long in service life.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to a four-pole four-carbon brush plastic bracket structure. Background Art

[0002] The carbon brush is one of the important components of the motor. Installing the carbon brush in the carbon brush holder and using elastic parts such as springs to support the carbon brush can keep the carbon brush against the rotating shaft at all times, thereby achieving the effect of allowing the carbon brush to conduct current.

[0003] Due to the structure, the installation of carbon brushes in the prior art is very inconvenient, especially the wiring part, which usually uses multiple through holes for threading and then makes electrical connections. The process is complicated, easily causes false connections, and is inconvenient to maintain. Utility Model Content

[0004] Technical problems to be solved

[0005] The technical problem to be solved by the utility model is to provide a four-pole four-carbon brush plastic bracket structure which has the advantages of compact structure, high strength, convenient installation, quick wiring and easy maintenance.

[0006] Technical solutions to the problem

[0007] The utility model provides a four-pole four-carbon brush plastic bracket structure, including a support 1 and a carbon brush 4, wherein the support 1 is embedded with at least two conductive sheets, and the conductive sheets are provided with an electrical connection portion, which extends to the outside of the support 1 and serves as a total wiring terminal; an even number of mounting hole groups are uniformly distributed on the support 1 in a circumferential direction, and the mounting hole groups include two parallel strip holes 131 that pass through the two end surfaces of the support 1, and the upper surface of the support 1 is provided with the same number of wiring slots 101 as the mounting hole groups, and the wiring slots 101 expose part of the upper surface of the conductive sheets and serve as the wiring terminals of the carbon brush 4; the carbon brush 4 includes a carbon brush housing and a carbon brush body 43 arranged in the carbon brush housing, the bottom surface of the carbon brush housing is provided with a claw 411, the claw 411 passes through the strip holes 131 from top to bottom and is bent and fixed, and a wire 431 is provided on the carbon brush body 43, and the wire 431 is fixed in the wiring slot 101 by welding to achieve electrical connection with the conductive sheet.

[0008] Furthermore, there are four mounting hole groups and they are evenly distributed circumferentially.

[0009] Furthermore, a sheet-shaped body is provided on the conductive sheet, and the sheet-shaped body is bent downward to form the main terminal.

[0010] Furthermore, the connection terminals of the two carbon brushes 4 arranged opposite to each other are located on the same conductive sheet.

[0011] Furthermore, a reinforcing sheet is provided on the conductive sheet, and the reinforcing sheet is located between the two strip-shaped holes 131 of the same mounting hole group.

[0012] Furthermore, a screw hole is provided on the reinforcing plate, and a hole body 132 coaxial with the screw hole is provided on the support 1 . A bolt passes through the hole body from bottom to top and is connected to the screw hole, thereby pressing the clamping claw 411 .

[0013] Furthermore, the conductive sheet includes a first conductive sheet 2 and a second conductive sheet 3 that are not in contact with each other, and the first conductive sheet 2 is provided with a first reinforcing sheet 22 and a first wiring sheet 21 for exposed wiring, and the first reinforcing sheet 22 and the first wiring sheet 21 are both two and are evenly distributed circumferentially; the second conductive sheet 3 is provided with a second reinforcing sheet 32 ​​and a second wiring sheet 31 for exposed wiring, and the second reinforcing sheet 32 ​​and the second wiring sheet 31 are both two and are evenly distributed circumferentially.

[0014] Furthermore, a receiving groove 130 for receiving the clamping claw 411 is formed on the bottom surface of the support 1 , and the depth of the receiving groove 130 is greater than the thickness of the clamping claw 411 .

[0015] Furthermore, a plurality of mounting posts 11 are evenly distributed around the bottom of the support 1 , and there are two main wiring terminals, which are arranged on both sides of one of the mounting posts 11 .

[0016] Furthermore, the support 1 is circular, the top surface of the support 1 is concave and forms a mounting cavity 1a, the mounting hole group and the wiring groove 101 are arranged on the bottom surface of the mounting cavity 1a, and the center of the mounting cavity 1a is penetrated by a through hole 10 that can accommodate the rotor to pass through.

[0017] Beneficial effects

[0018] The utility model discloses a four-pole four-carbon brush plastic bracket structure, which adopts a built-in conductive sheet and is partially exposed through a wiring slot. Electrical connection is achieved by spot welding, eliminating the need for threading, making wiring convenient and labor-saving, with low assembly cost, greatly improving the neatness of the structure, and improving operational reliability and stability. At the same time, the conductive sheet forms a skeleton, which improves the structural strength of the bracket, avoids deformation, and prolongs the service life. The carbon brushes are fixed in the form of claws, which are convenient and labor-saving to install and disassemble, and are convenient for later maintenance and care, with low manufacturing and maintenance costs. The provision of a reinforcement sheet can improve the structural strength of the clamping area, thereby improving the connection reliability of the carbon brushes and extending the service life. The reinforcement sheet is provided with screw holes, which can be used to tighten the clamping jaws, thereby avoiding loosening caused by errors in production or assembly, and thus improving the connection accuracy and reliability of the carbon brushes. The provision of an accommodating groove can accommodate the clamping jaws to avoid their exposure, thereby improving the compactness and aesthetics of the structure and ensuring safety in use. The wiring terminals are provided on both sides of the connecting column, which facilitates the quick connection of the wires and avoids short circuits caused by accidental contact of the wires during the wiring process, thereby ensuring high safety in use. The utility model discloses a four-pole four-carbon brush plastic bracket structure, which has a compact structure, convenient wiring, high reliability in use, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the four-pole four-carbon brush plastic bracket structure from another angle of the utility model;

[0021] Figure 3 This is a partial cross-sectional view of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0024] Figure 6 This is a structural diagram of the support of the four-pole four-carbon brush plastic support structure of the utility model;

[0025] Figure 7 This is a front view of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0026] Figure 8 This is a cross-sectional view of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0027] Figure 9 This is a structural schematic diagram of the first conductive sheet of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0028] Figure 10 This is a structural diagram of the second conductive sheet of the four-pole four-carbon brush plastic bracket structure of the utility model;

[0029] Figure 11 This is a schematic diagram of the structure of the carbon brushes in the four-pole four-carbon brush plastic bracket structure of the utility model;

[0030] Figure 12 This is a schematic structural diagram of the carbon brushes from another angle of the four-pole four-carbon brush plastic bracket structure of the utility model. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0032] See Figures 1-12 The utility model provides a four-pole four-carbon brush plastic bracket structure, including a bracket 1 and a carbon brush 4 detachably mounted on the bracket 1.

[0033] The support 1 is cylindrical as a whole, that is, its cross-section is circular, and can be installed to the end of the motor and is used to install the carbon brush 4. The top surface of the support 1 is concave inward to form a circular installation cavity 1a. A through hole 10 is passed through the center of the installation cavity 1a, which can accommodate the head of the rotor to pass through. The carbon brush 4 is arranged in the installation cavity 1a. There is an even number of them and they are evenly distributed circumferentially. In this embodiment, there are four carbon brushes 4 and they are evenly distributed circumferentially. The support is made of plastic as a whole, and at least two conductive sheets are embedded in the support 1. The conductive sheet is made of conductive metal. In this embodiment, it is copper. The conductive sheet is a sheet-like structure as a whole, and the plane where the conductive sheet is located is perpendicular to the axis of the support 1. During manufacturing, plastic is injection-molded on the outside of the conductive sheet to form the support 1, so that the conductive sheet is built into the support 1.

[0034] An electrical connection portion is provided on the conductive sheet, and the electrical connection portion extends to the outside of the support 1, serving as a main terminal for connecting to the wire 5 and serving as the electrical input terminal of the motor. Specifically, a sheet is provided on the conductive sheet, which is bent downward by 90 degrees and extends to the outside of the lower end of the support 1 to form a main terminal; at the same time, a mounting hole group is provided on the support 1, and the mounting hole group is provided on the bottom surface of the mounting cavity 1a. The mounting hole group is an even number and is uniformly distributed in the circumferential direction. In this embodiment, there are four (groups) of mounting holes, and each mounting hole group includes two parallel strip holes 131. The two ends of the strip hole 131 pass through the upper and lower end surfaces of the support 1, which are used to install and fix the carbon brush 4; the carbon brush 4 includes a carbon brush The carbon brush housing comprises a housing and a carbon brush body 43 arranged in the carbon brush housing. Two claws 411 are provided on the bottom surface of the carbon brush housing. The claws 411 pass through the strip hole 131 from top to bottom and then bend toward each other to fix the carbon brush on the support 1. In the present application, in order to avoid the claws 411 from being exposed and affecting the compactness of the overall structure, a receiving groove 130 is provided on the bottom surface of the support 1. The receiving groove 130 is located directly below the mounting hole group, that is, the lower end of the strip hole 131 is connected to the receiving groove 130. The depth of the receiving groove 130 is greater than the thickness of the claws 411, and is used to accommodate the bent claws 411. Even if the claws 411 are located in the receiving groove 130, it can avoid leakage and causing abruptness, thereby improving the compactness and aesthetics of the structure.

[0035] Specifically, the carbon brush housing includes a carbon brush housing body 41 and a bottom plate 42. The cross section of the carbon brush housing body 41 is U-shaped, and legs 412 are symmetrically provided on both sides of its lower end. Two legs 412 are provided on each side. The legs are in contact with the upper surface of the bottom plate 42 and can be fixedly connected to the bottom plate by welding. At the same time, a sheet-shaped clamping portion is provided at the lower end of the carbon brush housing body 41. The clamping portion is a claw. The clamping portion is located between the two legs 412. A hole is provided on the bottom plate for the clamping portion to pass through. During assembly, the claw is aligned with the strip hole 131 and is fixed from above. Insert it downward, and when the bottom plate contacts the bottom surface of the mounting cavity on the support, the claws are bent to fix the carbon brush on the support 1; the two ends of the carbon brush shell are open (open), and the carbon brush body 43 is horizontally slid into the carbon brush shell, and its sliding direction is parallel to the axis of the support 1. At the same time, an elastic component 44 is provided at the rear end of the carbon brush shell. The elastic component makes the carbon brush body tend to move inward, that is, the carbon brush body tends to move toward the commutator on the rotor. The elastic component is a compression spring, and its rear end contacts the inner wall of the mounting cavity. The structure is compact and easy to load and unload and maintain.

[0036] A wiring slot 101 is also provided on the bottom surface of the mounting cavity 1a. The number of the wiring slots 101 is the same as the number of the mounting hole groups (or carbon brushes), which is four in this embodiment. They are arranged on one side of the mounting hole group. The wiring slot 101 is a circular hole that exposes part of the upper surface of the conductive sheet to serve as the wiring terminal of the carbon brush 4. A wire 431 is provided on the carbon brush body 43, and the end of the wire 431 is fixed to the conductive sheet in the wiring slot 101 by welding (spot welding), thereby achieving electrical connection with the conductive sheet.

[0037] In order to facilitate assembly and improve operational reliability and stability, the connection terminals of the two carbon brushes 4 arranged opposite to each other are located on the same conductive sheet. The two carbon brushes 4 arranged opposite to each other, i.e., located on the same diameter, have an angle of 180 degrees between them.

[0038] To enhance the carbon brush installation strength, a rectangular reinforcement sheet is provided on the conductive sheet. It is located between two strip-shaped holes 131 in the same mounting hole group, forming a clamping and fixing area between the two strip-shaped holes. The reinforcement sheet is located within this clamping and fixing area, enhancing the structural strength of the clamping and fixing area, thereby improving the installation reliability and stability of the carbon brush, preventing displacement caused by long-term use and extending its service life. To improve assembly precision, a screw hole is provided on the reinforcement sheet. At the same time, a hole 132 coaxial with the screw hole is provided on the support 1. A bolt is inserted from bottom to top through the hole and then threadedly connected to the screw hole. The head of the bolt can compress the claw 411, thereby improving the installation reliability of the carbon brush, preventing displacement during operation, and improving assembly precision and reliability.

[0039] The conductive sheet in the present application includes a first conductive sheet 2 and a second conductive sheet 3. The first conductive sheet 2 and the second conductive sheet 3 are located on the same horizontal plane and do not contact each other, that is, there is no electrical connection between the two. A first reinforcing sheet 22 and a first terminal 21 for external wiring are provided on the first conductive sheet 2. There are two first reinforcing sheets 22 and they are evenly distributed circumferentially. First screw holes 220 are opened on the first reinforcing sheet 22. There are two first terminal 21 and they are evenly distributed circumferentially. A rectangular contact sheet is provided on the side wall of the first conductive sheet 2. The contact sheet is bent downward by 90 degrees to form a first total terminal 2a. 3 is provided with a second reinforcing sheet 32 ​​and a second terminal 31 for exposed wiring. There are two second reinforcing sheets 32 and they are evenly distributed circumferentially. A second screw hole 320 is opened on the second reinforcing sheet 32. There are two second terminal 31 and they are evenly distributed circumferentially. A rectangular contact piece is provided on the side wall of the second conductive sheet 3. The contact piece is bent downward to form a second main terminal 3a. The above-mentioned first main terminal and the second main terminal are located on the same plane. In this application, the first conductive sheet 2 and the second conductive sheet 3 are arc-shaped with different diameters. One is located on the inner side and the other is located on the outer layer. The overall shape is an irregular arc shape. See Figures 8-10 .

[0040] At the same time, a plurality of mounting posts 11 are evenly distributed circumferentially at the bottom of the support 1, and mounting holes are opened at the ends of the mounting posts. In this application, there are four mounting posts for mounting components such as circuit boards, and two main wiring terminals are arranged on both sides of one of the mounting posts 11, that is, a mounting post is arranged between the two main wiring terminals to avoid short circuits caused by accidental touching of the wires during the wiring process, and the safety of use is high.

[0041] The utility model discloses a four-pole four-carbon brush plastic bracket structure, which adopts a built-in conductive sheet and is partially exposed through a wiring slot. Electrical connection is achieved by spot welding, eliminating the need for threading, making wiring convenient and labor-saving, with low assembly cost, greatly improving the neatness of the structure, and improving operational reliability and stability. At the same time, the conductive sheet forms a skeleton, which improves the structural strength of the bracket, avoids deformation, and prolongs the service life. The carbon brushes are fixed in the form of claws, which are convenient and labor-saving to install and remove, and are convenient for later maintenance and care, with low manufacturing and maintenance costs. The provision of a reinforcement sheet can improve the structural strength of the clamping area, thereby improving the connection reliability of the carbon brushes and extending the service life. The reinforcement sheet is provided with screw holes, which can be used to tighten the clamping jaws, thereby avoiding loosening caused by errors in production or assembly, thereby improving the connection accuracy and reliability of the carbon brushes and increasing the connection strength. The provision of an accommodating groove can accommodate the clamping jaws to avoid their exposure, thereby improving the compactness and aesthetics of the structure and ensuring safety in use. The wiring terminals are provided on both sides of the connecting column, which facilitates the quick connection of the wires and avoids short circuits caused by accidental contact of the wires during the wiring process, thereby ensuring high safety in use. The utility model discloses a four-pole four-carbon brush plastic bracket structure, which has a compact structure, convenient wiring, high reliability in use, and long service life.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A four-pole four-carbon brush plastic bracket structure, characterized by: The carbon brush comprises a support and a carbon brush, wherein at least two conductive sheets are embedded in the support, and an electrical connection portion is provided on the conductive sheet, and the electrical connection portion extends to the outside of the support and serves as a main terminal; an even number of mounting hole groups are uniformly distributed circumferentially on the support, and the mounting hole group comprises two strip holes arranged in parallel and passing through the two end surfaces of the support, and the upper surface of the support is provided with wiring grooves with the same number as the mounting hole groups, and the wiring grooves expose part of the upper surface of the conductive sheet and serve as the wiring terminal of the carbon brush; the carbon brush comprises a carbon brush shell and a carbon brush body arranged in the carbon brush shell, and the bottom surface of the carbon brush shell is provided with a claw, and the claw passes through the strip holes from top to bottom and is bent and fixed, and a wire is provided on the carbon brush body, and the wire is fixed in the wiring groove by welding to achieve electrical connection with the conductive sheet.

2. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: There are four mounting hole groups and they are evenly distributed around the circumference.

3. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: A sheet-shaped body is provided on the conductive sheet, and the sheet-shaped body is bent downward to form the main terminal.

4. The four-pole four-carbon brush plastic support structure according to claim 2, characterized in that: The connection terminals of the two carbon brushes arranged opposite to each other are located on the same conductive sheet.

5. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: A reinforcing sheet is provided on the conductive sheet, and the reinforcing sheet is located between the two strip-shaped holes in the same mounting hole group.

6. The four-pole four-carbon brush plastic support structure according to claim 5, characterized in that: A screw hole is provided on the reinforcing plate, and a hole body coaxial with the screw hole is provided on the support. A bolt passes through the hole body from bottom to top and is connected with the screw hole, thereby pressing the clamping claw.

7. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: The conductive sheet includes a first conductive sheet and a second conductive sheet that are not in contact with each other. The first conductive sheet is provided with a first reinforcement sheet and a first wiring sheet for exposed wiring. There are two first reinforcement sheets and two first wiring sheets, and they are evenly distributed circumferentially. The second conductive sheet is provided with a second reinforcement sheet and a second wiring sheet for exposed wiring. There are two second reinforcement sheets and two second wiring sheets, and they are evenly distributed circumferentially.

8. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: The bottom surface of the support is provided with an accommodating groove for accommodating the clamping claw, and the depth of the accommodating groove is greater than the thickness of the clamping claw.

9. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: A plurality of mounting posts are evenly distributed around the bottom of the support, and there are two main connection terminals, which are arranged on both sides of one of the mounting posts.

10. The four-pole four-carbon brush plastic support structure according to claim 1, characterized in that: The support is circular, the top surface of the support is concave inward and forms a mounting cavity, the mounting hole group and the wiring groove are arranged on the bottom surface of the mounting cavity, and a through hole for accommodating the rotor passes through the center of the mounting cavity.

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