CN214589610U - Conductive slip ring with long service life - Google Patents

Abstract

The utility model relates to the technical field of conductive slip rings, in particular to a conductive slip ring with long service life, which comprises a rotating component, an input lead, a static component, an output lead and a friction pair component; the rotating assembly is rotatably arranged in the static assembly, the input lead and the output lead are respectively arranged at two ends of the conductive slip ring, and the input lead is electrically connected with the output lead through a corresponding friction pair assembly; the friction pair assembly is characterized by comprising a conductive ring sheet and a brush wire pair; the electric brush wire pair comprises a static component, a conductive ring piece, an annular groove and an electric brush wire pair, wherein the static component is arranged on the rotating component, the conductive ring piece is arranged on the rotating component, the annular groove is arranged on the conductive ring piece, the section of the annular groove is in a T-shaped groove shape, one end of the electric brush wire pair is fixed on the static component, and the other end of the electric brush wire pair is arranged in the annular groove and is in contact with the conductive ring piece. The ring channel on the conductive ring sheet is in a T-shaped groove shape, the friction between the brush wire pair and the two sides of the ring channel is reduced, thereby improving the service life of the device.

Description

Conductive slip ring with long service life

Technical Field

The utility model relates to a lead electrical slip ring technical field, concretely relates to lead electrical slip ring with long-life.

Background

The conductive slip ring is a precise power transmission device for realizing power and signal transmission between two opposite rotating mechanisms, and is widely applied to robots, intelligent production lines, radar systems and the like. The conductive slip ring has the functions of electricity transmission and rotation. The electrical transmission function of the conductive slip ring is mainly to realize the transmission of electrical signals between a rotating part and a static part through a wire and a sliding friction pair, as shown in fig. 1. The conductive slip ring is divided into a rotating part and a static part, the rotating part and the static part are driven by a mechanical interface to generate relative rotation, and n +/-360-degree unlimited rotation of the rotating part and the static part is realized, as shown in fig. 2. The working principle of the electric slip ring is as follows: the conductive slip ring is supported by bearings at a rotating part and a static part to form n +/-360-degree unlimited rotation, power and signal transmission between the rotating part and the static part is realized by means of a friction pair between the rotating part and the static part, and the working principle of the conductive slip ring is shown in figure 3.

The defects and shortcomings of the prior art are as follows:

at present, a conductive ring sheet of a long-life conductive slip ring rotor generally adopts a V-groove form, in the process that the rotor rotates along a shaft in the rotor, electric brush wires inevitably rub an insulating washer beside the rotor, and because the electric brush wires are made of metal materials and the insulating washer is made of engineering Plastics (POM), when the rotor rotates, the electric brush wires cut insulating powder from the insulating washer like a cutter; the insulating powder is continuously accumulated between the conductive ring sheet and the brush wire, which may cause an increase in contact resistance between the conductive ring sheet and the brush wire over a long period of time, and may even cause an open circuit condition.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem in this application, the utility model provides a lead electrical slip ring with long-life.

The utility model provides a following technical scheme:

the conductive slip ring with long service life comprises a rotating component, an input lead, a static component, an output lead and a friction pair component; the rotating assembly is rotatably arranged in the static assembly, the input lead and the output lead are respectively arranged at two ends of the conductive slip ring, and the input lead is electrically connected with the output lead through a corresponding friction pair assembly; the friction pair assembly comprises a conductive ring sheet and an electric brush wire pair; the electric brush wire pair comprises a static component, a conductive ring piece, an annular groove and an electric brush wire pair, wherein the static component is arranged on the rotating component, the conductive ring piece is arranged on the rotating component, the annular groove is arranged on the conductive ring piece, the section of the annular groove is in a T-shaped groove shape, one end of the electric brush wire pair is fixed on the static component, and the other end of the electric brush wire pair is arranged in the annular groove and is in contact with the conductive ring piece.

Preferably, the rotating assembly comprises a rotating shaft body; the static assembly comprises a combined bracket and an outer cover; the rotating shaft body is cylindrical, two ends of the rotating shaft body are rotatably arranged in the combined support through rotating bearings, and the outer cover is installed on the outer side of the combined support.

Preferably, a plurality of the conductive ring pieces are arranged on the rotating assembly, an insulating gasket is arranged between every two adjacent conductive ring pieces, each conductive ring piece is correspondingly provided with an electric brush wire pair, each electric brush wire pair is composed of two electric brush wires, and the two electric brush wires are symmetrically arranged.

Preferably, the brush wire is composed of a plurality of conductive needle bars.

The utility model relates to a conductive slip ring with long service life, which has the advantages that the brush wire is composed of a plurality of conductive needle bars, on one hand, the abrasion of the brush wire to a conductive ring piece is reduced, on the other hand, the plurality of conductive needle bars are connected in parallel, and the resistance of the brush wire is reduced; the ring channel on the conductive ring sheet is in a T-shaped groove shape, the friction between the brush wire pair and the two sides of the ring channel is reduced, thereby improving the service life of the device.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the electrical transmission function of an electrically conductive slip ring;

FIG. 2 is a schematic view of the rotation function of the conductive slip ring;

FIG. 3 is a schematic diagram of the operation of the conductive slip ring;

FIG. 4 is a schematic diagram of the overall structure of the conductive slip ring;

FIG. 5 is a schematic view of a rotating assembly with conductive ring segments;

FIG. 6 is a schematic view of an assembly structure of a pair of brush wires and a conductive ring piece;

FIG. 7 is a schematic view of a configuration of an annular groove and brush wires;

reference numerals: 1. a conductive ring sheet; 2. a pair of electric brush wires; 21. electric brush wires; 3. an annular groove; 4. a combined bracket; 5. a housing; 6. a rotating bearing; 7. an insulating washer; 8. a conductive pin; 9. a rotating shaft body.

Detailed Description

The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the drawings.

As shown in fig. 4 to 7, the conductive slip ring with long life includes a rotating assembly, an input lead, a stationary assembly, an output lead, and a friction pair assembly; the rotating assembly is rotatably arranged in the static assembly, the input lead and the output lead are respectively arranged at two ends of the conductive slip ring, and the input lead is electrically connected with the output lead through a corresponding friction pair assembly; the friction pair assembly comprises a conductive ring sheet 1 and an electric brush wire pair 2; the conductive ring piece 1 is arranged on the rotating assembly, the annular groove 3 is arranged on the conductive ring piece 2, the section of the annular groove 3 is in a T-shaped groove shape, one end of the electric brush wire pair 2 is fixed on the static assembly, and the other end of the electric brush wire pair is arranged in the annular groove 3 and is in contact with the conductive ring piece 2. The rotating assembly can rotate in the static assembly for infinite times through the rotating bearing 6, and the input lead transmits an electric signal to the output lead through the friction pair assembly. The ring channel 3 on the conductive ring piece 1 is in a T-shaped groove shape, the friction of the brush wire on two sides of the ring channel 2 and the ring channel 3 is reduced, thereby the service life of the device is prolonged.

The rotating assembly comprises a rotating shaft body 9; the static assembly comprises a combined bracket 4 and a housing 5; the rotating shaft body 9 is cylindrical, two ends of the rotating shaft body are rotatably arranged in the combined support 4 through rotating bearings 6, and the outer cover 5 is installed on the outer side of the combined support 4. The rotation shaft body 9 rotates in the combination bracket 4 through the rotation bearing 6.

A plurality of conductive ring pieces 1 are arranged on the rotating assembly, an insulating gasket 7 is arranged between every two adjacent conductive ring pieces 1, each conductive ring piece 1 is correspondingly provided with an electric brush wire pair 2, each electric brush wire pair 2 consists of two electric brush wires 21, and the two electric brush wires 21 are symmetrically arranged. One end of each input lead extends into the rotating shaft body 9 and is connected with the bottom of the conductive ring sheet 1, one end of each output lead penetrates into the combined support 4 and is connected with one end of the brush wire 21, and therefore the brush wire 21 is connected in parallel. The electric brush wire 21 is composed of a plurality of conductive needle bars 8, on one hand, abrasion of the electric brush wire 21 to the conductive ring sheet 1 is reduced, and on the other hand, the plurality of conductive needle bars 8 are connected in parallel, so that resistance of the electric brush wire 21 is reduced.

The base material of the conductive ring sheet is H62 brass, and Pd-Ni alloy is plated on the base to ensure that the hardness of the whole conductive ring sheet reaches 400 Hv; the electric brush wire is made of gold-nickel alloy, and the hardness is 270 Hv; the surface roughness of the conductive ring sheet is 0.2, the surface roughness of the brush wire is 0.2, and the surface roughness of the conductive ring sheet and the surface roughness of the brush wire are both extremely low and are close to a mirror surface. The hardness of the conductive ring sheet is higher than that of the electric brush wire, and the contact surfaces of the conductive ring sheet and the electric brush wire are extremely low in roughness, so that the electric brush wire is prevented from cutting redundant substances from the conductive ring sheet, and the conductive slip ring rotor is enabled to have an ultra-long service life.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The conductive slip ring with long service life comprises a rotating component, an input lead, a static component, an output lead and a friction pair component; the rotating assembly is rotatably arranged in the static assembly, the input lead and the output lead are respectively arranged at two ends of the conductive slip ring, and the input lead is electrically connected with the output lead through a corresponding friction pair assembly; the friction pair assembly is characterized by comprising a conductive ring sheet and a brush wire pair; the electric brush wire pair comprises a static component, a conductive ring piece, an annular groove and an electric brush wire pair, wherein the static component is arranged on the rotating component, the conductive ring piece is arranged on the rotating component, the annular groove is arranged on the conductive ring piece, the section of the annular groove is in a T-shaped groove shape, one end of the electric brush wire pair is fixed on the static component, and the other end of the electric brush wire pair is arranged in the annular groove and is in contact with the conductive ring piece.

2. The conductive slip ring with long life of claim 1, wherein the rotating assembly comprises a rotating shaft body; the static assembly comprises a combined bracket and an outer cover; the rotating shaft body is cylindrical, two ends of the rotating shaft body are rotatably arranged in the combined support through rotating bearings, and the outer cover is installed on the outer side of the combined support.

3. The long-life conductive slip ring according to claim 1, wherein a plurality of said conductive ring segments are disposed on said rotating member, an insulating washer is disposed between adjacent conductive ring segments, and each conductive ring segment is correspondingly provided with a pair of brush wires, each pair of brush wires being composed of two brush wires, and the two brush wires are symmetrically disposed.

4. The conductive slip ring with long life of claim 3, wherein said brush wire is comprised of a plurality of conductive pins.

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