Electric brush assembly of novel electric connection structure

Abstract

The invention discloses an electric brush assembly of a novel electric connection structure. The beneficial effects of the invention are that the conductive steel sheet is used as a conductive electric connection piece between the pin wires at the end parts of two elements, and a group of plugging teeth is plugged into a group of corresponding plugging holes in the pin wires by combining the outward pushing acting force between the conductive steel sheet and the convex block with the isosceles trapezoid-shaped cross section; meanwhile, hot-pressing deformation of the hot-pressing molding column is facilitated by hot-pressing equipment, and the conductive steel sheet which is pressed downwards and moved downwards is bound and fixed, so that the tensile strength of the connecting part can be enhanced, and the firmness of the electric connecting part can be optimized and improved; a mode that the V-shaped insulation buffer sheet internally provided with the elastic steel wire supports the back surface of one end of the electric brush supporting copper sheet used for supporting and connecting the carbon brush is adopted, so that acting force buffer can be applied to the electric brush supporting copper sheet, and the fatigue resistance of repeated stress change of the electric brush supporting copper sheet is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, in particular to a brush assembly with a novel electrical connection structure. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. A motor, represented by the letter M in an electrical circuit, primarily generates driving torque, serving as a power source for electrical appliances and various machines. A generator, represented by the letter G in an electrical circuit, primarily converts mechanical energy into electrical energy.

[0003] Existing brush assemblies, whose electrical connections are clipped onto the insulation structure, suffer from the following drawbacks under the numerous vibrations of motor operation: 1. The electrical connections lack durability, leading to loosening and unnecessary circuit failures; 2. The brush support copper plates, which support the brushes, experience reduced fatigue resistance under repeated stress, reducing their support efficiency. Therefore, a brush assembly with a novel electrical connection structure was proposed to address these issues. Summary of the Invention

[0004] The purpose of the present invention is to provide a brush assembly with a new electrical connection structure in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: a brush assembly with a novel electrical connection structure, comprising a brush fixing insulating ring, a conductive steel sheet, two carbon brushes, a brush supporting copper sheet and a V-shaped insulating buffer sheet, wherein a plurality of electrical connection slots are distributed on the surface of the brush fixing insulating ring, the interior of each electrical connection slot is connected to the outside through a channel, and a pin wire portion is inserted into each channel, and a clamping groove is distributed at the electrical connection section of the pin wire, the conductive steel sheet is located inside each electrical connection slot, and the two sides of the conductive steel sheet are connected to the conductive steel sheet located at each electrical connection slot. An outward pushing force is formed between the protrusions at the bottom of the electrical connection slots, and the connecting teeth distributed on both sides of the conductive steel sheet are inserted into the corresponding connecting holes through the outward pushing force. The two hot-pressed plastic columns located in the middle of the protrusions are fixed at the round holes by hot pressing. The two carbon brushes located in the middle of the brush fixing insulating ring are respectively installed at one end of the two brush supporting copper sheets, and one side of each brush supporting copper sheet is connected to the inside of the clamping groove on one side of the V-shaped insulating buffer sheet, and one end of the V-shaped insulating buffer sheet is fixed on the inner wall of the brush fixing insulating ring.

[0006] Preferably, the pin wires are electrically connected to two ends of the copper coil, one end of the brush supporting copper sheet and one end of the capacitor element in different lengths and shapes.

[0007] Preferably, the electrical connection slots are divided into two groups and one group, wherein the electrical connection slots in a group of two are internally connected with two pin wires to be electrically connected to each other.

[0008] Preferably, the cross section of the protrusion is an isosceles trapezoid, and the top surface of the protrusion is lower than the notch of the electrical connection slot.

[0009] Preferably, the circular holes are in a group of two, and the two circular holes are symmetrically opened on the top surface of the conductive steel sheet.

[0010] Preferably, an elastic steel wire is provided inside the V-shaped insulating buffer sheet.

[0011] The beneficial effects of the present invention are: By using a conductive steel sheet as a conductive electrical connector between the pin conductors at the ends of the two components, and combining the outward pushing force between the conductive steel sheet and the protrusion with an isosceles trapezoidal cross-section to insert a set of plug teeth into a set of corresponding plug holes on the pin conductors, the hot pressing equipment is conducive to the hot pressing deformation of the hot pressing plastic column to restrain and fix the conductive steel sheet that is pressed and moved downward, which can not only enhance the tensile strength of the connection, but also optimize and improve the firmness of the electrical connection; A V-shaped insulating buffer sheet with an elastic steel wire inside is used to support the back side of one end of the brush support copper sheet used for carbon brush support connection. This can buffer the force acting on the brush support copper sheet and improve the fatigue resistance of the brush support copper sheet to repeated stress changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the conductive steel sheet structure of the present invention; Figure 3 This is a schematic diagram of the structure of the V-shaped insulating buffer sheet of the present invention.

[0014] In the figure: 1. Brush fixing insulating ring; 110. Electrical connection slot; 111. Bump; 112. Hot-pressed plastic column; 2. Conductive steel sheet; 210. Round hole; 220. Connecting tooth; 3. Copper coil; 4. Carbon brush; 5. Brush supporting copper sheet; 6. Capacitor element; 7. V-shaped insulating buffer sheet; 710. Snap-in slot; 8. Pin wire; 810. Connecting hole. DETAILED DESCRIPTION

[0015] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", 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 invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] See also Figure 1-3 As shown, a brush assembly with a new electrical connection structure includes a brush fixing insulating ring 1, a conductive steel sheet 2, two carbon brushes 4, a brush supporting copper sheet 5 and a V-shaped insulating buffer sheet 7. The surface of the brush fixing insulating ring 1 is provided with a plurality of electrical connection slots 110. The interior of each electrical connection slot 110 is connected to the outside through a channel, and a pin wire 8 is inserted into the interior of each channel. The electrical connection section of the pin wire 8 is distributed with a clamping groove 710. The conductive steel sheet 2 is located inside each electrical connection slot 110, and the two sides of the conductive steel sheet 2 are connected to the convex bottom of each electrical connection slot 110. An outward pushing force is formed between the blocks 111, and the splicing teeth 220 distributed on both sides of the conductive steel sheet 2 are inserted into the corresponding splicing holes 810 through the outward pushing force. The two hot-pressed plastic columns 112 located in the middle of the protrusion 111 are fixed at the circular hole 210 by hot pressing. The two carbon brushes 4 located in the middle of the brush fixing insulating ring 1 are respectively installed at one end of the two brush supporting copper sheets 5, and one side of each brush supporting copper sheet 5 is connected to the inside of the clamping groove 710 located on one side of the V-shaped insulating buffer sheet 7, and one end of the V-shaped insulating buffer sheet 7 is fixed on the inner wall of the brush fixing insulating ring 1.

[0019] Furthermore, the pin wires 8 are electrically connected to both ends of the copper coil 3 , one end of the brush supporting copper sheet 5 and one end of the capacitor element 6 in different lengths and shapes.

[0020] Furthermore, the electrical connection slots 110 are divided into two groups and one group, wherein the electrical connection slots 110 in a group of two are internally connected with two pin wires 8 to be electrically connected to each other.

[0021] Furthermore, the cross section of the protrusion 111 is an isosceles trapezoid, and the top surface of the protrusion 111 is lower than the notch of the electrical connection slot 110 .

[0022] Furthermore, the circular holes 210 are arranged in a group of two, and the two circular holes 210 are symmetrically opened on the top surface of the conductive steel sheet 2 .

[0023] Furthermore, an elastic steel wire is provided inside the V-shaped insulating buffer sheet 7 .

[0024] Compared with the existing technology, the differences are: First, by using the conductive steel sheet 2 as a conductive electrical connector between the pin conductors 8 at the ends of the two components, and combining the outward pushing force between the conductive steel sheet 2 and the protrusion 111 with an isosceles trapezoidal cross-section, a set of plug teeth 220 are inserted into a set of plug holes 810 corresponding to the pin conductors 8. At the same time, the hot pressing equipment facilitates the hot pressing deformation of the hot pressing molding column 112 to restrain and fix the conductive steel sheet 2 that is pressed and moved downward, thereby enhancing the tensile strength of the connection and optimizing the firmness of the electrical connection. Second, a V-shaped insulating buffer sheet 7 with elastic steel wire inside is used to support the back side of one end of the brush support copper sheet 5 used to support and connect the carbon brush 4. This can buffer the force acting on the brush support copper sheet 5 and improve the fatigue resistance of the brush support copper sheet 5 to repeated stress changes.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and scope of the appended claims be encompassed. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brush assembly with a new electrical connection structure, characterized by: The invention comprises a brush fixing insulating ring (1), a conductive steel sheet (2), two carbon brushes (4), a brush supporting copper sheet (5) and a V-shaped insulating buffer sheet (7). The surface of the brush fixing insulating ring (1) is provided with a plurality of electrical connection slots (110). The interior of each electrical connection slot (110) is connected to the outside through a channel, and a pin wire (8) is inserted into the interior of each channel. A clamping slot (710) is distributed at the electrical connection section of the pin wire (8). The conductive steel sheet (2) is located inside each electrical connection slot (110), and between the two sides of the interior of the conductive steel sheet (2) and the protrusions (111) located at the bottom of each electrical connection slot (110), An outward pushing force is formed, and the plug-in teeth (220) distributed on both sides of the conductive steel sheet (2) are inserted into the corresponding plug-in holes (810) through the outward pushing force, and the two hot-pressed plastic columns (112) located in the middle of the protrusion (111) are fixed to the circular hole (210) by hot pressing, and the two carbon brushes (4) located in the middle of the brush fixing insulating ring (1) are respectively installed on one end of the two brush supporting copper sheets (5), and one side of each brush supporting copper sheet (5) is connected to the inside of the clamping groove (710) located on one side of the V-shaped insulating buffer sheet (7), and one end of the V-shaped insulating buffer sheet (7) is fixed on the inner wall of the brush fixing insulating ring (1).

2. The brush assembly with a novel electrical connection structure according to claim 1 is characterized in that: The pin wires (8) are electrically connected to two ends of the copper coil (3), one end of the brush support copper sheet (5), and one end of the capacitor element (6) in different lengths and shapes.

3. The brush assembly with a novel electrical connection structure according to claim 1 is characterized in that: The electrical connection slots (110) are divided into two groups and one group, wherein the electrical connection slots (110) in a group of two are internally connected with two pin wires (8) to be electrically connected to each other.

4. The brush assembly with a novel electrical connection structure according to claim 1 is characterized in that: The cross section of the protrusion (111) is in the shape of an isosceles trapezoid, and the top surface of the protrusion (111) is lower than the notch of the electrical connection slot (110).

5. The brush assembly with a novel electrical connection structure according to claim 1 is characterized in that: The circular holes (210) are arranged in groups of two, and the two circular holes (210) are symmetrically opened on the top surface of the conductive steel sheet (2).

6. The brush assembly with a novel electrical connection structure according to claim 1 is characterized in that: An elastic steel wire is provided inside the V-shaped insulating buffer sheet (7).

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