CN113839279A

CN113839279A - Brush structure and brush module

Info

Publication number: CN113839279A
Application number: CN202010578270.6A
Authority: CN
Inventors: 谢世仰; 汪弘益
Original assignee: Tricore Corp
Current assignee: Tricore Corp
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-12-24

Abstract

The application provides an electric brush structure and electric brush module, this electric brush structure has a fixed section and two free sections to extend from the relative both ends of this fixed section, wherein, every this free section extends from the one end of keeping away from this fixed section and forms a plurality of electric brush silk, these electric brush silk have a straight portion definition to be a contact area. The brush module using the brush structure can make the brush wire have proper stress to maintain the state of contacting with the slip ring, and can reduce the jumping pin. Moreover, the plurality of brush wires can provide more electrically connected areas, the condition that one brush wire is interfered by dust to generate signal interruption is avoided, and the service life of the brush structure is prolonged.

Description

Brush structure and brush module

Technical Field

The application relates to an electric brush structure and an electric brush module applying the same, wherein the free end of the electric brush structure is forked to form a plurality of electric brush wires, so that the chance of generating a jumper pin when a slip ring jumps can be reduced.

Background

The matching of the collecting ring and the electric brush can be applied to a circuit system which requires continuous rotation and needs to transmit power and/or electronic signals, so that the sprain of a lead in the rotation process is avoided. Since the brushes must be in constant contact with the metal ring to ensure the transmission of the power and/or electronic signals, their strength 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

The present application provides a brush structure having a fixed segment and two free segments extending from opposite ends of the fixed segment, wherein each free segment extends from an end away from the fixed segment to form a plurality of brush filaments, and each brush filament has a straight portion defining a contact area. Therefore, the brush wire has proper stress to maintain the state of contacting with the slip ring, and the jumping pin can be reduced. Moreover, the plurality of brush wires can provide more electrically connected areas, the condition that one brush wire is interfered by dust to generate signal interruption is avoided, and the service life of the brush structure is prolonged.

The application also provides an electric brush structure, which comprises a plurality of electric brush structures which are arranged at intervals; and a base at least covering two opposite ends of the fixed sections of the electric brush structures and exposing two folded angles between the fixed sections and two free sections of the electric brush structures. Accordingly, the brush structure is maintained.

Furthermore, the base can also adjust the spacing distance between each electric brush structure corresponding to the design requirements of the electric brush structure, so that the manufacturing process is more flexible.

Other features and embodiments of the present application will be described in detail below with reference to the 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 structural view of a brush structure;

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

FIG. 3 is an assembly schematic of a collector slip ring;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a partial cross-sectional view of fig. 3.

Description of the symbols

10 brush structure 11, fixed segment 12 and angle

13 free section 14 connecting part 15 brush wire

151 suspended area 152, contact area 16, bending feet

18 base 20

brush module

30,45 conducting wire

100 collector slip ring 41, insulating ring 42 and metal slip ring

50: axis center

Detailed Description

The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings.

Referring to fig. 1, a brush structure 10 is shown, which has a fixed segment 11 and two free segments 13 extending from opposite ends of the fixed segment 11, wherein a fillet 12 is formed between the fixed segment 11 and the two free segments 13. Each free segment 13 extends straight outwards from one end of the fixed segment 11, two brush wires 15 are formed by branching from the middle part of the free segment 13, and the tail ends of the brush wires 15 are provided with a bending foot 16 which faces outwards (away from the metal slip ring), so that the bending angle 12 and the bending foot 16 can provide proper stress to enable the free segment 13 to face towards the slip ring.

In the present embodiment, each free segment 13 has a connecting portion 14 at one end connected to the bent corner 12, and two brush filaments 15 extending from the other end of the connecting portion 14, each brush filament 15 has a straight portion defined as a suspended region 151 adjacent to the connecting portion 14 and a contact region 152 adjacent to the bent leg 16. Accordingly, the connecting portion 14 of the free section 13 can provide proper stress, so that the contact region 152 of the brush wire 15 can have proper elasticity to maintain the state of contacting the metal slip ring, thereby reducing the jumping pin. In addition, the contact areas 152 of the two brush wires 15 are individually contacted with a slip ring, so that more electrical connection areas can be provided, the situation that one of the contact areas 152 is interfered by dust to generate signal interruption can be avoided, the service life of the brush structure 10 can be prolonged, and on the premise of maintaining the electrical connection, one connecting part 14 can be branched to form more than three brush wires 15.

In the present embodiment, the lengths L of the connecting portion 14 of the free segment 13, the suspended region 151 of the brush wire 15, and the contact region 152 of the brush wire 15 are substantially the same, however, the length ratio of the connecting portion 14 to the brush wire 15 may be between 2:3 and 1:4 (i.e., 1:1.5 to 1:4), and the length ratio of the suspended region 151 of the brush wire 15 to the contact region 152 of the brush wire 15 may be between 5:4 and 5:6 (i.e., 1:0.8 to 1:1.2), and similar stresses may be maintained, so that the brush wire 15 fits the slip ring.

In the present embodiment, the fixed section 11 and the free section 13 of the brush structure 10 are substantially flat plates with uniform thickness, and the width of the connecting portion 14 of the free section 13 is wider, so as to maintain a proper tension, reduce the bending degree of the bevel 12, and make the free end 13 not easy to deform during the operation of the metal slip ring. The brush wires 15 also have a flat shape, and have a smaller width than the connecting portion 14 to improve the mechanical characteristics thereof, and the flat-shaped brush wires 15 can also make linear contact with the metal slip ring 42 to increase the contact area. It is, however, also possible to obtain the desired mechanical properties by adjusting the width of the brush filaments 15, or by making the cross-section of the brush filaments substantially circular,

referring to fig. 2, a schematic structural diagram of the brush module 20 is shown, in which the brush module 20 includes a plurality of brush structures 10 arranged at intervals; and the base 18 positions the plurality of brush structures 10, and at least covers two opposite ends of the fixed section 11 of the brush structure 10, exposing the two folded angles 12 between the fixed section 11 and the two free sections 13 of the brush structure 10, further, the base 18 may only expose the middle portion of the fixed section 11 of the brush structure 10 to electrically connect the wires 30 (as shown in fig. 3), and accordingly, the wires 30 are also located on the same plane, and are more easily stacked on one side of the base, thereby reducing the overall size. The base 18 also exposes the break 12 to maintain the stress of the brush structures 10, and the brush structures 10 may be spaced apart at the same or different distances to correspond to the positions of the metallic slip rings 42 (shown in fig. 3) of the rotor module.

Referring to fig. 3 and 4, a schematic structural diagram of an assembled slip ring is shown, in which the slip ring 100 includes a brush module 20 and a rotor module, the rotor module includes a plurality of insulating rings 41 and a plurality of metal slip rings 42 alternately sleeved along a virtual axial direction, the metal slip rings 42 are electrically connected to wires 45, the wires 45 are concentrated at one end of the rotor module and extend to the outside of the rotor module, the wires 45 are embedded by an insert to form a bundle and an axis 50, and the insulating rings 41 and the metal slip rings 42 are positioned at the same time.

The insulating rings 41 may also define the positions of the metal slip rings 42, such that each brush structure 10 in the brush module 20 can be correspondingly mounted on one of the metal slip rings 42, such that at least one of the brush filaments 15 of the brush structure 10 contacts the metal slip ring 42. By minimizing the width of the insulating ring 41 and by maximizing the width of the metallic slip ring 42, the chance of contact between the metallic slip ring 42 and the brush wire 15 can be increased. In addition, the width of the metal slip ring 42 can be fine-tuned to improve the voltage or current resistance of the metal slip ring 42. The configuration of the rotor module can further fine-tune the width of the metal slip rings 42 and the distance between the metal slip rings 42, and the manufacturing process is more flexible by embedding, injecting and positioning.

Referring to fig. 5, the middle section of the contact area 152 of the brush wire 15 (about half the length L of the contact area 152) is shown as the contact area 152 actually contacting the metallic slip ring 42. The contact area 152 can maintain the corresponding stress and the contact area 152 by adjusting the bending degree of the bent angle 12 and the bent leg 16, the width of the connecting portion 14 of the free section 13 or the brush wire 15, and the total length of the brush wire 15, thereby further meeting the use requirement.

The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of 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 modifications or changes to other equivalent embodiments without departing from the scope of the technology disclosed in the present application, but should be construed as technology or implementations substantially the same as the present application.

Claims

1. A brush structure is provided with a fixed section and two free sections extending from two opposite ends of the fixed section, and is characterized in that each free section extends from one end far away from the fixed section to form a plurality of brush wires, and each brush wire is provided with a straight part which is defined as a contact area.

2. The brush structure of claim 1, wherein one end of the brush filaments is provided with an outwardly bent leg.

3. The brush structure of claim 1, wherein the fixed segment and the free segment are rounded.

4. The brush structure according to claim 1, wherein each of the free segments has a connecting portion and the brush filaments are formed extending from the connecting portion, and a length ratio of the connecting portion to the brush filaments is between 1:1.5 and 1: 4.

5. The brush structure according to claim 1, wherein the straight portion of the brush filaments defines a suspended region and the contact region, and a length ratio of the suspended region to the contact region is between 1:0.8 and 1: 1.2.

6. The brush structure of claim 1, wherein the brush filaments are flat.

7. A brush module, comprising:

a plurality of brush structures according to claim 1 in a spaced arrangement; and

and the base at least covers two opposite ends of the fixed sections of the electric brush structures and exposes two folded angles between the fixed sections and two free sections of the electric brush structures.

8. The brush structure of claim 7, wherein the base exposes intermediate portions of the stationary segments of the brush structures.

9. The brush structure of any of claims 1-8, wherein the brush structures are spaced apart the same distance.