CN112397960A

CN112397960A - Brush wire and slip ring collector

Info

Publication number: CN112397960A
Application number: CN201910762736.5A
Authority: CN
Inventors: 施心智; 谢世仰
Original assignee: Hong Ke Precision Co ltd
Current assignee: Hong Ke Precision Co ltd; TRICORE Corp
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2021-02-23

Abstract

The application provides an electric brush wire, has connecting segment and two free sections and extends from the relative both ends of connecting segment, and the one end that the free section kept away from the connecting segment is equipped with two at least contact surfaces, and these some contact surfaces's part links to each other and forms the angle of buckling, and the angle of buckling is towards each other. The electric brush wire structure can avoid the bouncing of the slip ring, increase the friction area of the electric brush wire and stabilize the signal transmission.

Description

Brush wire and slip ring collector

Technical Field

The application relates to an electric brush wire structure which can effectively contact with a collecting ring, reduce abrasion and effectively avoid bounce generated when a sliding ring operates.

Background

A circuit for transmitting power and signals from a stator to a rotor in an electromechanical system uses a collector ring and an electric brush which are matched with each other, so that the power and signals can be transmitted while continuous rotation is generated, and the wire is prevented from being damaged in the using process. Since the brushes must be in continuous contact with the metal ring located on the rotor, the strength thereof must be maintained at a certain level. In addition, when a metal wire is used as a brush, the contact pressure is light, the brush is easily worn, and the jumping of the pin causes a phenomenon that the transmission signal output is unstable.

Disclosure of Invention

Accordingly, the present invention is directed to a brush wire that can be engaged with a conductive ring to effectively contact the conductive engaging portion, thereby facilitating the transmission of electronic signals, reducing wear and reducing the occurrence of pin skipping.

According to an aspect of the present invention, there is provided a brush wire having a connecting segment and two free segments extending from opposite ends of the connecting segment, wherein a portion of the free segments remote from the connecting segment is provided with at least two contact surfaces, and portions of the contact surfaces are connected to form a bent angle, and the bent angles face each other.

Therefore, the contact surface of the electric brush wire is buckled into the V-shaped groove of the conducting ring when being matched, the bouncing of the sliding ring can be avoided, the friction-resistant area of the electric brush wire is increased, and the signal transmission is stabilized.

In addition, the contact surfaces are formed by punching and bending a part of the free section to form a round corner bending angle, and the two contact surfaces form a V-shaped included angle with the cross section of 40-60 degrees, so that the brush wire and the V-shaped groove of the conducting ring generate linear or two-dimensional contact positions.

In addition, the contact surface of the brush wire can be provided with a metal coating, so that the cost of noble metal is reduced, and the wear resistance or the conductivity is increased.

The application also provides a collector slip ring, which comprises the brush module and the rotor module. The conducting ring of the rotor module is provided with V-shaped grooves which are respectively matched with the contact surfaces of the brush wires of the brush module, so that the design of a die can be simplified, each V-shaped groove is matched with the structure of the brush wire, and the matching position error is avoided.

Further details regarding other functions and embodiments of the present application are described below with reference to the accompanying drawings.

Drawings

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

FIG. 1 is a schematic diagram of a construction of a brush filament;

FIG. 2 is a schematic structural view of a brush module;

FIG. 3 is a schematic diagram of a slip ring assembly;

fig. 4 is a cross-sectional view of the slip ring of fig. 3.

Description of the symbols

10: brush module 11: electric brush wire

12: the connecting section 13: free segment

14: contact regions 141, 142: contact surface

143: bending angle 15: folding leg

16: brush base 30: rotor module

31: v-shaped groove 32: insulating portions D-D: section line

Detailed Description

In order to specifically describe the embodiments and achieve the effects of the present application, an embodiment is provided and described below with reference to the drawings.

Referring to fig. 1, there is shown a brush wire 11 having a connecting section 12 and two free sections 13 extending from opposite ends of the connecting section 12, the connecting section 12 being for connection to an electrical wire (not shown), a portion of the free section 13 away from the connecting section 12 being provided with symmetrical contact areas 14 for forming an electrical path with a conductive ring 31 (shown in fig. 3).

In this embodiment, the contact surfaces 141,142 are formed by stamping a portion of the continuous surface of the free section 13. As shown in fig. 1, the contact region 14 has a V-shaped cross-section along the D-D line, and the connecting portion of the contact surfaces 141,142 forms a bending angle 143 of 40 to 60 degrees, wherein the bending angle 143 is rounded and matches the conductive ring in the direction of the conductive ring.

Thus, the brush wires 11 and the V-shaped grooves 31 on the outer surface of the conductive ring can form a complementary structure. Referring to FIG. 4, the contact surfaces 141,142 can be in linear contact or two-dimensional contact with the recessed V-groove 31 on the surface of the conductive ring, so as to reduce the instability of the contact resistance. In addition, the surface of the contact region 14 may be provided with a metal plating layer with good conductivity, which is lower in manufacturing cost than the prior art in which the brush wire is entirely plated with a noble metal.

Referring to fig. 2, a brush module is shown in which a plurality of brush filaments 11 are positioned by a brush base 16 such that the brush filaments 11 are spaced apart to match the grooves of a rotor module 30 (shown in fig. 3). The free end of the brush wire 11 is further provided with a folded leg 15, and the folded leg 15 is bent and formed towards the direction away from the conductive ring, so as to control the elasticity of the free section 13 and the contact pressure between the brush wire 11 and the conductive ring 31, and reduce the contact resistance. It is worth mentioning that the bending direction of the bending leg 15 is perpendicular to the bending direction of the contact area 14.

Referring to fig. 3 and 4, a slip ring structure is shown, in which the brush module is matched with the rotor module 30. The conducting ring 31 of the rotor module 30 has a plurality of V-shaped grooves 31 spaced apart from the insulating portion 32, each of the V-shaped grooves matching the contact surface 141 of one of the brush filaments 11. In addition, the outer edge of the insulating portion 32 is protruded relative to the V-shaped groove 31 to separate the adjacent brush wires 11, so that the brush wires 11 are prevented from being partially dislocated when being fastened into the conductive ring, the generation of the bouncing of the slip ring can be avoided, and the signal transmission is stabilized.

Further, since the contact surfaces 141,142 of the contact region 14 and the V-groove 31 form linear contact positions, the stress range can be dispersed, the brush filaments 11 have abrasion resistance characteristics to increase the service life, and reduce contact resistance instability; meanwhile, the ripple of the contact between the contact area 14 of the brush wire 11 and the conductive ring 31 is small, and the noise is reduced.

In addition, since the bending angle 143 between the contact surfaces 141,142 is rounded, when the brush wire 11 is matched with the conductive ring 31, a gap is formed between the bending angle 143 and the surface of the conductive ring 31, so that when the contact surfaces 141,142 are worn, the structure of the bending angle 143 may cause the contact surfaces 141,142 to move toward the surface of the conductive ring 31, thereby generating a new contact position and increasing the service life.

In other embodiments, the contact area 14 of brush wire 11 may be joined to the free end 13 by a separate component (e.g., plating) to form contact surfaces 141,142, and the two contact surfaces 141,142 of contact area 14 may be two adjacent surfaces that act as a contact area triangular prism, with similar results.

The above-described embodiments and/or implementations are only illustrative of the preferred embodiments and/or implementations for implementing the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make many changes or modifications to the equivalent embodiments without departing from the scope of the technology disclosed in the present application, but should still be considered as the technology or implementations substantially the same as the present application.

Claims

1. An electric brush wire, which is provided with a connecting section and two free sections extending from two opposite ends of the connecting section, is characterized in that: at least two contact surfaces are arranged on a part of each free section far away from the connecting section, and a part of each contact surface is connected to form a bending angle which faces to each other.

2. The brush wire of claim 1, wherein the bent corners are rounded.

3. The brush wire of claim 2, wherein the bend angle is between 40 degrees and 60 degrees.

4. The brush wire of claim 1, wherein the contact surfaces form a V-shaped configuration in cross-section.

5. The brush wire of claim 1, wherein the contact surfaces are stamped and bent.

6. The brush wire according to any of claims 1 to 5, wherein one end of the free segments has a leg bent in a direction opposite to the mating direction.

7. An electric brush wire according to any one of claims 1 to 5, characterized in that the contact surfaces are provided with a metallic coating.

8. The brush wire according to any of claims 1 to 5, characterized in that the contact surfaces constitute two linear contact locations or two-dimensional contact locations.

9. The brush wire of claim 1, wherein the free segments are symmetrically disposed.

10. A slip ring, comprising:

a brush module having a plurality of brush wires according to claim 1; and

and a rotor module which is provided with a plurality of V-shaped grooves and insulating parts which are arranged at intervals, wherein the V-shaped grooves are respectively matched with the two contact surfaces of the brush wires.