CN210012917U

CN210012917U - Conductive electric brush and power supply assembly

Info

Publication number: CN210012917U
Application number: CN201920622512.XU
Authority: CN
Inventors: 黄孙和; 吴志鹏
Original assignee: Kunshan Dongwei Technology Co Ltd
Current assignee: Kunshan Dongwei Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-04
Anticipated expiration: 2029-04-30

Abstract

The utility model provides a conductive brush and power supply assembly, including brush body, at least one wear-resisting body and a plurality of electrified body. The electric brush body is provided with a grinding surface, the wear-resistant body is fixed in the electric brush body, the end surface of the wear-resistant body exposed on the grinding surface is flush with the grinding surface and is positioned in the grinding surface, the wear resistance of the wear-resistant body is greater than that of the electric brush body, the grinding surface is pressed on the surface of the power receiver to generate sliding friction, after a small amount of surface layer electric brush bodies are ground, the friction force mainly acts on the wear-resistant body, the relative friction force between the electric brush bodies and the power receiver is reduced, the grinding of the electric brush bodies is reduced, and meanwhile, the generation of particle pollutants is reduced.

Description

Conductive electric brush and power supply assembly

Technical Field

The utility model belongs to the technical field of electrically conduct, concretely relates to electrically conductive brush and power supply unit spare.

Background

At present, a common vertical electroplating device drives a circuit board to run along an electroplating bath filled with electroplating solution through a transmission device which runs in a circulating mode, the circuit board continuously enters from one end of the electroplating bath and is output from the other end, and the electroplating solution in the electroplating bath is electroplated on the surface of the circuit board in the process.

In the vertical electroplating system, the conductive brush continuously transmits the electricity on the conductive brush to a power receiver through sliding friction with the power receiver in the transmission device, and then the electricity is sequentially transmitted to the transmission belt and the electroplating clamp, so that the circuit board is powered. The traditional conductive electric brush is formed by directly mixing and pressing metal powder, graphite powder and a binder, on one hand, long-time friction oxidation of a current receiver on a continuous plating line to the traditional conductive electric brush leads the grinding surface of the electric brush to be smaller and smaller, and the power supply current is unstable; on the other hand, metal powder and graphite powder are mixed and pressed, the graphite powder bonded near the metal powder is easy to be driven to fall off when the metal powder falls off through friction, the conductive brush is always biased towards a power receiver so that the conductive brush can be in sliding friction contact with the power receiver for power supply, when the metal powder and the graphite powder on the outer layer of the conductive brush which is in direct contact with the surface of the power receiver fall off through friction, the metal powder and the graphite powder on the inner layer of the conductive brush are in sliding friction contact with the surface of the power receiver continuously, the ground surface of the conductive brush falls off layer by layer, the graphite powder and the metal powder generated by the friction falling off form conductive particles which cannot be dissolved in an electroplating solution, so that the electroplating solution is polluted, the conductive particles are attached to the surface of the circuit board to form electroplating.

Aiming at the abrasion of the electric brush and the pollution of powder dust, the prevention is mainly performed at present, for example, an alarm lead is additionally arranged in the conductive electric brush, and the abrasion degree of the conductive electric brush is monitored in real time; aiming at the pollution of graphite dust and metal powder, the improved track dust collecting cover has the advantages of complex structure and higher cost, and can not solve the problem fundamentally.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that will solve lies in that current conductive brush is not wear-resisting and easy grinding forms particle pollutant.

To this end, the utility model provides a conductive brush, include

A brush body having a ground surface;

at least one wear resistant body fixedly disposed within the brush body;

the end surface of any wear-resistant body exposed on the grinding surface is flush with the grinding surface and is positioned in the grinding surface;

the wear resistance of the wear-resistant body is greater than the wear resistance of the brush body.

Preferably, the conductive brush, at least one blind hole or through hole, extends from the grinding surface to the inside of the brush body;

the wear-resistant bodies are arranged in the blind holes or the through holes in a one-to-one correspondence mode.

Preferably, the conductive brush, the wear-resistant body and the blind hole or the through hole are in interference fit, or

And the outer wall surface of the wear-resistant body is in concave-convex fit with the inner wall surface of the blind hole or the through hole.

Preferably, in the conductive brush, the outer wall surface of the wear-resistant body in the blind hole or the through hole and the inner wall surface of the bottom of the blind hole or the through hole are bonded and fixed by an adhesive.

Preferably, in the conductive brush, a cross-sectional shape of the brush body is a right trapezoid;

the grinding surfaces are distributed on the inclined sides of the right trapezoid.

Preferably, in the conductive brush, the brush body is made of a conductive pure metal material; and/or

Any wear-resistant body is formed by mixing, pressing and molding graphite powder and oilstone.

Preferably, in the conductive brush, the pure metal is pure copper.

Preferably, in the conductive brush, the graphite powder and the oilstone in any one of the wear-resistant bodies are mixed and pressed according to a mass ratio of 1: 1.

Preferably, in the above conductive brush, the number of the wear-resistant bodies is at least two, and two adjacent wear-resistant bodies are arranged on the brush body at intervals.

The utility model provides a power supply assembly, include

The conductive brush described above;

and the plurality of power receivers are suitable for being in slidable abutting joint with the grinding surface of the electric brush body.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a conductive brush, including brush body and at least one wear-resisting body. The electric brush body is provided with a grinding surface, the wear-resistant body is fixed in the electric brush body, the end surface of the wear-resistant body exposed on the grinding surface is flush with the grinding surface and is positioned in the grinding surface, the wear resistance of the wear-resistant body is greater than that of the electric brush body, the grinding surface is pressed on the surface of the power receiver to generate sliding friction, after a small amount of surface layer electric brush bodies are ground, the friction force mainly acts on the wear-resistant body, the relative friction force between the electric brush bodies and the power receiver is reduced, the grinding of the electric brush bodies is reduced, and meanwhile, the generation of particle pollutants is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a conductive brush according to the present invention;

fig. 2 is a schematic structural diagram of the middle conductive brush according to the present invention.

Description of reference numerals:

1-a brush body; 11-grinding the noodles; 12-blind holes; 13-a first mounting hole; 14-a second mounting hole; 2-a wear resistant body; 3-conducting wire.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment provides a conductive brush, as shown in fig. 1, comprising a brush body 1 and at least one wear resistant body 2. In the present embodiment, the brush body 1 is made of pure metal material, such as pure copper. The whole brush body 1 that is right trapezoid, the hypotenuse of right trapezoid forms the grinding face 11 of brush body 1, extends towards brush body 1 by grinding face 11 and offers at least one blind hole 12 or through-hole, as shown in fig. 1 and fig. 2, in this embodiment, offers four cylindrical blind holes 12 on the grinding face 11 of brush body 1, and arbitrary blind hole 12 perpendicular to grinding face 11 extends towards brush body 1.

Wear-resisting body 2 and blind hole 12 one-to-one are fixed in blind hole 12 through interference fit's mode, and wear-resisting body 2 sets up four promptly, and mutual interval arrangement is on brush body 1 between wear-resisting body 2, and the terminal surface that wear-resisting body 2 is located blind hole 12 passes through the adhesive bonding with the hole bottom of blind hole 12 and fixes, and the terminal surface that arbitrary one wear-resisting body 2 exposes grinding face 11 flushes with grinding face 11.

In the embodiment, the wear resistance of the wear-resistant body 2 is greater than that of the brush body 1, the wear-resistant body 2 is formed by mixing and pressing graphite powder and oilstone according to the mass ratio of 1:1, the grinding surface 11 is pressed against the surface of a power receiver (not shown in the figure) to generate sliding friction, after a small amount of surface brush bodies 1 are ground, the friction force mainly acts on the wear-resistant body 2, the relative friction force between the brush body 1 and the power receiver is reduced, the grinding of the brush body 1 is reduced, and meanwhile, the generation of particle pollutants is reduced.

As shown in fig. 1, a first mounting hole 13 is formed on the right-angled side of the right-angled trapezoid of the brush body 1 opposite to the grinding surface 11 and facing the inside of the brush body 1; as shown in fig. 2, the lead 3 is installed in the first installation hole 13 and connected to an external power source to supply power to the brush body 1.

As shown in fig. 2, a second mounting hole 14 is formed on a side wall surface of the brush body 1 through the brush body 1, the second mounting hole 14 is axially parallel to the ground surface 11, a torsion spring (not shown) is mounted in the second mounting hole 14, and the ground surface 11 of the brush body 1 is pressed against the surface of the power receiver by the torsion spring.

The use process of the conductive brush in the embodiment is as follows:

fix the conductive brush on equipment through the torsional spring to make the grinding face 11 support and press at the receiver surface, keep the slip friction of mutual butt with conductive brush when the receiver removes, after the wire 3 circular telegram, conductive brush lasts to the receiver power supply.

As a first alternative embodiment of example 1, the wear body 2 may be directly used as a graphite column.

As a second alternative embodiment of example 1, the blind hole 12 may also be provided as a stepped hole, the hole diameter of the stepped hole gradually decreases from the grinding surface 11 toward the inside of the brush body 1, the shape of the wear-resistant body 2 is adapted to the shape of the stepped hole, and the outer wall surface of the wear-resistant body 2 and the inner wall surface of the stepped hole are fixed by adhesive bonding.

Example 2

This embodiment provides a power supply assembly comprising the conductive brush of embodiment 1 and a plurality of power receivers, any of which can be slidably abutted against the ground surface 11 of the conductive brush.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A conductive brush, comprising

A brush body (1) having a grinding surface (11);

at least one wear-resistant body (2) fixedly arranged in the brush body (1);

the end face of any wear-resistant body (2) exposed on the grinding face (11) is flush with the grinding face (11) and is positioned in the grinding face (11);

the wear resistance of the wear-resistant body (2) is greater than that of the electric brush body (1).

2. The conducting brush according to claim 1,

at least one blind hole (12) or through hole extending from the grinding surface (11) towards the inside of the brush body (1);

the wear-resistant bodies (2) are arranged in the blind holes (12) or the through holes in a one-to-one correspondence manner.

3. The conducting brush according to claim 2, characterized in that the wear-resistant body (2) is an interference fit with the blind hole (12) or through hole, or

The outer wall surface of the wear-resistant body (2) is in concave-convex fit with the inner wall surface of the blind hole (12) or the through hole.

4. The brush according to claim 3, characterized in that the outer wall of the wear-resistant body (2) in the blind hole (12) or the through hole is adhesively fixed to the bottom of the blind hole (12) or the inner wall of the through hole by means of an adhesive.

5. The conducting brush according to claim 4, characterized in that the cross-sectional shape of the brush body (1) is a right trapezoid;

the grinding surfaces (11) are distributed on the hypotenuse of the right trapezoid.

6. The brush according to any of claims 1-5, characterized in that the brush body (1) is made of conductive pure metal material; and/or

Any wear-resistant body (2) is formed by mixing, pressing and molding graphite powder and oilstone.

7. The conducting brush according to claim 6, wherein the pure metal is pure copper.

8. The conductive brush according to claim 6, wherein the graphite powder and the oilstone in any of the wear-resistant bodies (2) are mixed and pressed in a mass ratio of 1: 1.

9. The conducting brush according to any one of claims 1-5, characterized in that the wear-resistant bodies (2) are at least two, wherein two adjacent wear-resistant bodies (2) are arranged on the brush body (1) at intervals.

10. A power supply assembly, comprising

The conducting brush of any one of claims 1-9;

and the plurality of power receivers are suitable for being in slidable abutting joint with the grinding surface (11) of the electric brush body (1).