CN102170078B

CN102170078B - Electric brush

Info

Publication number: CN102170078B
Application number: CN 201010562702
Authority: CN
Inventors: 娄霆; 武传华; 陆后兵; 王俊
Original assignee: Hefei Baisheng Science and Technology Development Co Ltd
Current assignee: Hefei Baisheng Science and Technology Development Co Ltd
Priority date: 2010-11-27
Filing date: 2010-11-27
Publication date: 2013-06-12
Anticipated expiration: 2030-11-27
Also published as: CN102170078A

Abstract

The invention belongs to the field of electric elements, in particular relates to an electric brush. The electric brush comprises an electric brush mounting bracket and a brush body which is embedded in the electric brush mounting bracket; the brush body is an elastic conducting screw rod; a free end which is suspended on the brush body and a corresponding conducting ring on a slip ring form contact type sliding fit; and one end, which is embedded in the electric brush mounting bracket, of the brush body is connected with a lead to an external device. The electric brush has the advantages that the service life is long, the electric signal transmission is stable and reliable, and the wear rate is low.

Description

A kind of brush

Technical field

The invention belongs to the force device field, be specifically related to the brush of a kind of electricity for caliper and signal transmission.

Background technology

Brush is mounted on static element and relies on the brush brush body to do sliding contact with movement parts and form electricity and a kind of conductive component that signal is connected.In existing brush, the brush brush body is all to rely on compression spring to reach and the slip ring contact-making surface compresses to coordinate and reaches the purpose that is electrically connected between static element and movement parts usually.and in the measuring instrument field, it is a great difficult problem of puzzlement rotation caliper that the electricity that installation base plate in the rotation caliper is connected with rotating chassis and signal connect always, use brushgear can effectively improve this class situation, the major defect of existing brushgear shows the following aspects: at first, because slip ring is all generally the affixed cantilever-shaped structure of an end, when equipment normally moves, the shake amplitude of inevitable slip ring, frequency can be very high, the compression spring of conventional brush can't respond at all, therefore cause the loose contact of brush and slip ring, so cause serious sparking, cause the slip ring ablated surface, brush also damages thereupon, secondly, existing brush brush body is all the tabular composition that is spaced of bar of hard usually, and it is followed the equipment running can swipe the slip ring contact-making surface and produces a large amount of frictional noises, although can select electrographite brush to reduce operating noise, but the wearing and tearing of brush are large, and short characteristic of life-span is still inevitable, at last, the electrographite brush of traditional structure is due to the height wearing and tearing of brush itself, can produce a lot of carbon dusts, be scattered between each phase-contact surface of slip ring of insulation, as easy as rolling off a log generation slip ring phase fault and cause ground connection, thereby cause the thorough damage of slip ring system, serious also can cause the line fault of whole equipment.

Summary of the invention

The brush that the purpose of this invention is to provide a kind of long service life, its electric signal transmission is reliable and stable and wear rate is low.

For achieving the above object, the present invention has adopted following technical scheme: a kind of brush, comprise the brush fixed mount and be embedded at brush body on the brush fixed mount, described brush body is the elastic conduction screw mandrel, consist of contact between corresponding conducting ring on the free end that suspends on brush body and slip ring and be slidably matched, described brush body be embedded at an end connecting lead wire on the brush fixed mount to external equipment.

Beneficial effect of the present invention is: after adopting said structure, cancellation is shaken compression spring that frequently motion is difficult to respond and directly brush body is selected the elastic conduction screw mandrel height, thereby the free end that suspends on the assurance brush body is fitted on the conducting ring contact-making surface of slip ring all the time, guarantee the reliable and stable of its electric signal transmission, simultaneously, it is soft contact slide friction between the conducting ring contact-making surface of elastic conduction screw mandrel and slip ring, than existing hard strip brush, conflict therebetween reliable, wear and tear lower, and noise is also minimum.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is front view of the present invention;

Fig. 3 is the partial enlarged drawing of Fig. 2;

Fig. 4 is brush fixed rack structure schematic diagram;

Fig. 5 is that the present invention removes after riser and the slip ring installation diagram.

Embodiment

A kind of brush, comprise brush fixed mount 11 and be embedded at brush body 12 on brush fixed mount 11, described brush body 12 is the elastic conduction screw mandrel, 21 formation contacts of conducting ring corresponding on the free end that suspends on described brush body 12 and slip ring 20 are slidably matched, described brush body 12 be embedded at an end connecting lead wire on brush fixed mount 11 to external equipment, as Fig. 1-2 and shown in Figure 5.

As the present invention further optimization scheme, the wire harness boundling that brush body 12 consists of for unit brush body 121 intervals layouts, consist of one-to-one relationship between described unit brush body 121 each phase-contact surface with the slip ring 20 that matches with it, thereby the brush 10 of realizing being arranged on static element coordinates with the sliding contact of 20, slip ring on being arranged on movement parts, and realize that between the two electricity and signal connect, as Fig. 1 and shown in Figure 5.

Further, be reliable contact of assurance brush body 12 with 21 of slip ring 20 conducting rings, brush body 12 of the present invention be preferably unit brush body 121 intervals be evenly arranged and consist of be plane wire harness boundling, namely the wire harness boundling that consists of of unit brush body 121 is in same plane, as shown in Fig. 1-2.

Further, it is tabular that the profile of described brush fixed mount 11 is bar, and described brush body 12 is arranged on the side plate face of brush fixed mount 11, as shown in Fig. 1-2.Simultaneously, be to guarantee

brush body

12 and 21 further reliable fit of conducting ring, described brush body 12 is that two groups and " eight " font of being outer expanding shape are arranged symmetrically with, thereby has guaranteed the reliable and stable of electric signal transmission.

Unit brush body 121 can be realized its function by various ways, and as the present invention further optimization scheme, unit brush body 121 is constituted by the finer wire more than, and as shown in Figure 3, the present invention is preferably 5-10 root finer wire and constitutes.because unit brush body 121 is the fixing shape structure that suspends of an end, for preventing that steel wire from too disperseing, the root of described unit brush body 121 is provided with to produce for anti-stop element brush body 121 roots and extends out restraint device 122, described restraint device 122 is the helical form that cannula-like or finer wire are entwined, the leading section that this kind structure also makes unit brush body 121 be free projecting end produces nature and extends out, thereby it is produced with 21 of the conducting rings of slip ring 20 better contact effect, then make its electric signal transmission further reliable and stable, as shown in Figure 3, the helical form of using finer wire to be entwined that further is preferably of the present utility model, finer wire can select wherein one or more steel wire in unit brush body 121 to get final product, thereby also make its structure simpler when guaranteeing constraint.The unit brush body 121 of the formation brush body 12 here comprises and being connected with power line and the two parts that are connected with holding wire.

As the present invention further optimization scheme, consider that brush fixed mount 11 namely installs being connected between matrix with static element, as Fig. 1-2 and shown in Figure 4, brush 10 also comprises the riser 13 with brush fixed mount 11 Joints, the vertical brush fixed mount 11 plate faces of the plate face of described riser 13 arrange, described riser 13 and brush body 12 directions lay respectively at brush fixed mount 11 plate face both sides, simultaneously, laterally offer on described riser 13 for the mounting hole 131 affixed with matrix is installed, described mounting hole 131 runs through riser 13 plate face settings.In addition, mounting hole 131 its length directions are vertical with brush fixed mount 11 plate faces, thereby realized the upper-lower position controllability of the relative brush fixed mount 11 plate faces of whole brush 10, and allocating for the installation of brush 10 provides convenience, as Fig. 1-2 and Fig. 4.

As Fig. 1 and shown in Figure 4, riser 13 of the present invention is whole to be formed for batten bends, for further realizing the reliably affixed of 11 of riser 13 and brush fixed mounts, described riser 13 comprises flat part 132 and kink 133, described kink 133 is postponed for riser 13 plate face bottom bifurcateds and bending and is formed, it is rectangular that it bends the joint portion, and the minor face both ends that are the tabular brush fixed mount 11 of bar are supportted and are fixed in kink 133 holders.

As shown in Figure 5, the minor face both ends of brush fixed mount 11 offer the kidney-shaped installing hole 111 that runs through the plate face, the length direction of described kidney-shaped installing hole 111 is parallel with the minor face of brush fixed mount 11, the kink correspondence of described riser 13 is provided with installing hole 135, both bolts are affixed, thereby realized that brush 10 integral body are with respect to the position adjustability on the minor face parallel direction of brush fixed mount 11.

Further, also be provided with alignment pin 134 on the kink of riser 13, to be used for the installation location of 11 of riser 13 and brush fixed mounts, as shown in Figure 4, simultaneously, the also corresponding location hole that coordinates that offers with it of corresponding position on described brush fixed mount 11, for not affecting brush 10 integral body with respect to the position adjustability on the minor face parallel direction of brush fixed mount 11, described location hole is mounting hole location hole 112, the parallel kidney-shaped installing hole 111 of described kidney-shaped location hole 112 arranges, and specifically coordinates the installation relation as shown in Figure 1.

By above-mentioned governor motion, thereby realized the position adjustability of the above-below direction of the parallel direction of brush body 12 and relative brush fixed mount 11 minor faces of slip ring 20 and its plate face, for 20, brush 10 and slip ring reliable contacts and cooperation provides assurance.

Claims

1. brush, it is characterized in that: described brush (10) comprises brush fixed mount (11) and is embedded at brush body (12) on brush fixed mount (11), described brush body (12) is the elastic conduction screw mandrel, consist of contact between conducting ring (21) corresponding to the free end that suspends on described brush body (12) and slip ring (20) and be slidably matched, described brush body (12) be embedded at an end connecting lead wire on brush fixed mount (11) to external equipment;

It is tabular that described brush fixed mount (11) profile is bar, and described brush body (12) is arranged on the side plate face of brush fixed mount (11), and described brush body (12) is that two groups and " eight " font of being outer expanding shape are arranged symmetrically with;

Described brush (10) also comprises the riser (13) with brush fixed mount (11) Joint, the vertical brush fixed mount of the plate face of described riser (13) (11) plate face arranges, described riser (13) and brush body (12) direction lay respectively at brush fixed mount (11) plate face both sides, laterally offer on described riser (13) for the mounting hole (131) affixed with matrix is installed, described mounting hole (131) runs through the setting of riser (13) plate face.

2. brush according to claim 1, it is characterized in that: described brush body (12) is arranged the wire harness boundling that consists of for unit brush body (121) interval, consist of one-to-one relationship between each phase-contact surface of the slip ring (20) that described unit brush body (121) matches with it together.

3. brush according to claim 2 is characterized in that: described brush body (12) is evenly arranged for unit brush body (121) interval the plane wire harness boundling that is that consists of.

4. according to claim 2 or 3 described brushes, it is characterized in that: described unit brush body (121) is that the finer wire more than constitutes, the root of described unit brush body (121) is provided with the restraint device (122) that extends out for anti-stop element brush body (121) root, described restraint device (122) is the helical form that cannula-like or finer wire are entwined, and the leading section of described brush body (12) is free projecting end.

5. according to claim 2 or 3 described brushes, it is characterized in that: the unit brush body (121) of described formation brush body (12) comprises and being connected with power line and the two parts that are connected with holding wire.

6. brush according to claim 1, it is characterized in that: its length direction of described mounting hole (131) is vertical with brush fixed mount (11) plate face.

7. brush according to claim 1, it is characterized in that: described riser (13) is whole to be formed for batten bends, described riser (13) comprises flat part (132) and kink (133), described kink (133) is postponed for riser (13) plate face bottom bifurcated and bending and is formed, it is rectangular that it bends the joint portion, and the minor face both ends that are the tabular brush fixed mount (11) of bar are supportted and are fixed in described kink (133) holder.

8. brush according to claim 7, it is characterized in that: the minor face both ends of described brush fixed mount (11) offer the kidney-shaped installing hole (111) that runs through the plate face, the length direction of described kidney-shaped installing hole (111) is parallel with the minor face of brush fixed mount (11), the upper correspondence of the kink (133) of described riser (13) is provided with installing hole (135), and both bolts are affixed.

9. brush according to claim 8, it is characterized in that: also be provided with alignment pin (134) on the kink (133) of described riser (13), the upper corresponding position of described brush fixed mount (11) is the corresponding kidney-shaped location hole (112) that coordinates with it that offers also, and the parallel kidney-shaped installing hole of described kidney-shaped location hole (112) (111) arranges.