CN209627113U

CN209627113U - A kind of novel electric brush component

Info

Publication number: CN209627113U
Application number: CN201920050603.0U
Authority: CN
Inventors: 李秋容; 周丽芳
Original assignee: Changsha Avenue Precision Engineering Technology Co Ltd
Current assignee: Changsha Avenue Precision Engineering Technology Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2019-11-12
Anticipated expiration: 2029-01-11

Abstract

A kind of novel electric brush component, the brush assembly of electric includes brush yoke, brush holder support, brush carrier, elastic element, magnetic element, brush, the brush yoke is fixed on the cover board, brush holder support is fixed on the brush yoke, brush carrier is fixed on the brush holder support, the brush carrier includes brush box, brush lid, magnetic element, elastic element, the brush box end is equipped with magnetic element, the brush is covered equipped with elastic element, brush mounting groove is equipped in the brush box, the brush and the brush mounting groove are sliding, the brush is connect with the elastic element, the brush is equipped with compatible magnetic element, magnetic element on the brush box is different with the magnetic element polarity on brush, the utility model is able to extend Service Life of Carbon Brush, improve stability, reduce motor noise.

Description

A kind of novel electric brush component

Technical field

The utility model relates to a kind of brush more particularly to a kind of novel electric brush components.

Background technique

Currently, brush motor needs to contact by the sliding friction between brush and commutator to realize changing for winding current To, so that it is guaranteed that the continued smooth of motor operates, and in order to ensure well contacting between brush and commutator, it needs to make the two Between maintain certain contact pressure, therefore, in existing brush motor, being usually provided in the end of brush can be applied The spiral pressure spring or torsional spring for adding elastic pressure, during brush is constantly worn, the pressure spring or torsional spring can push always Brush presses on commutator, to guarantee that brush and commutator are mutually compressed to realize good conductive；

However, brush is beginning to use in the case that the pressure spring or torsional spring stated in use apply elastic pressure to brush Contact pressure during terminating to service life between commutator changes greatly, i.e. the fluctuation range of contact pressure is larger, existing When some brush motors just begin to use, the elastic element decrement of bottom is maximum, so that the friction between brush and commutator Power increases, and is easy to appear that brush wear becomes faster, the service life shortens or stuck phenomenon, so that the fever of motor be caused to increase or make an uproar The change of tune is big, and after brush wear, the elastic force that pressure spring provides becomes smaller, then is easy to appear showing for brush and commutator poor contact As, thus cause motor speed unstable or generate electromagnetism spark, in short, the contact pressure between brush and commutator it is excessive or The too small normal work that will affect motor, i.e. reliability will be greatly reduced.

Utility model content

In view of this, the brush assembly of electric includes brush the purpose of this utility model is to provide a kind of novel electric brush component Pole socket, brush holder support, brush carrier, elastic element, magnetic element, brush, the brush yoke is fixed on the cover board, fixed on the brush yoke There is brush holder support, brush carrier is fixed on the brush holder support, the brush carrier includes brush box, brush lid, magnetic element, elastic element, the brush box End is equipped with magnetic element, and the brush is covered equipped with elastic element, and brush mounting groove, the brush and institute are equipped in the brush box It is sliding to state brush mounting groove, the brush is connect with the elastic element, and the brush is equipped with compatible magnetic element, institute The magnetic element stated on brush box is different with the magnetic element polarity on brush.

Preferably, the elastic element is spring.

Preferably, the magnetic element is magnet.

Preferably, the brush end is equipped with fixing seat, and the fixing seat both ends are fixed with magnet, the fixing seat bottom It is fixedly connected with the spring.

Preferably, the sliding slot being adapted to the fixing seat is equipped in the brush mounting groove.

Preferably, the fixing seat both ends are arc-shaped.

Compared with prior art, the utility model has the following beneficial effects:

Described brush box one end is equipped with spring, the other end is equipped with magnet, and the brush end is equipped with fixing seat, the fixation Seat be it is step-like, the fixing seat both ends are fixed with magnet, and the fixing seat bottom is fixedly connected with the spring, comes into operation When, the active force between brush and commutator remains unchanged, and can effectively increase Service Life of Carbon Brush, stability is improved, Reduce motor noise.

Detailed description of the invention

Fig. 1 is the overall structure figure of the utility model.

Fig. 2 is the utility model main view.

Fig. 3 is brush box part-structure figure in Fig. 2.

Diagram: 1 brush yoke, 2 brush holder supports, 3 brush boxs, 4 magnetic elements, 5 brush mounting grooves, 6 brushes, 7 fixing seats, 8 elasticity members Part, 9 brush lids.

Specific embodiment

With reference to the accompanying drawing and specific embodiment, the utility model is described further.

As shown in Figure 1-3, a kind of novel electric brush component, the brush assembly of electric includes brush yoke 1, brush holder support 2, brush carrier, elasticity Element 8, magnetic element 4, brush 6, the brush yoke 1 is fixed on the cover board, and brush holder support 2, the brush are fixed on the brush yoke 1 Brush carrier is fixed on bar 2；

The brush carrier includes brush box 3, brush lid 9, magnetic element 4, elastic element 8, and 3 end of brush box is equipped with magnetic element 4, the brush lid 9 is equipped with elastic element 8, and brush mounting groove 5 is equipped in the brush box 3, and the brush 6 is installed with the brush Slot 5 is sliding, and 6 end of brush is equipped with fixing seat 7, and 7 both ends of fixing seat are fixed with magnet, 7 bottom of fixing seat with The spring is fixedly connected, and is equipped with the sliding slot being adapted to the fixing seat 7,7 both ends of fixing seat in the brush mounting groove 5 To be arc-shaped, the brush 6 is equipped with compatible magnetic element 4, the magnetic on magnetic element 4 and brush 6 on the brush box 3 Property element 4 polarity it is different.

The principles of the present invention are as follows: the magnet on magnet, brush box 3 when brush assembly of electric just comes into operation, on brush 6 Between distance magnetive attraction is smaller farther out, the decrement of spring is maximum, provides the support force of adaptation, brush 6 and commutation to brush 6 Pressure adaptation between device；

When brush 6 comes into operation, the sliding friction between brush 6 and commutator makes brush 6 shorten, the magnetic on brush 6 The distance magnetive attraction that furthers slowly becomes larger between magnet on iron, brush box 3, and the elastic deformation of spring is slowly replied, and spring gives electricity The elastic force of brush 6 slowly becomes smaller, and the power being applied on brush 6 is held essentially constant, so that the pressure between brush 6 and commutator Also constant.

The above embodiments are only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this Range, therefore, modification made according to the patent scope of the utility model, equivalent variations, improvement etc. still belong to the utility model institute The range covered.

Claims

1. a kind of novel electric brush component, it is characterised in that: the brush assembly of electric include brush yoke, brush holder support, brush carrier, elastic element, Magnetic element, brush, the brush yoke is fixed on the cover board, and brush holder support is fixed on the brush yoke, is fixed on the brush holder support Brush carrier, the brush carrier include brush box, brush lid, magnetic element, elastic element, and the brush box end is equipped with magnetic element, the brush It covers and is equipped with elastic element, brush mounting groove is equipped in the brush box, the brush and the brush mounting groove are sliding, the electricity Brush is connect with the elastic element, and the brush is equipped with compatible magnetic element, magnetic element and electricity on the brush box The magnetic element polarity painted is different.

2. a kind of novel electric brush component according to claim 1, it is characterised in that: the elastic element is spring.

3. a kind of novel electric brush component according to claim 1, it is characterised in that: the magnetic element is magnet.

4. a kind of novel electric brush component according to claim 2, it is characterised in that: the brush end is equipped with fixing seat, The fixing seat both ends are fixed with magnet, and the fixing seat bottom is fixedly connected with the spring.

5. a kind of novel electric brush component according to claim 4, it is characterised in that: be equipped with and institute in the brush mounting groove State the sliding slot of fixing seat adaptation.

6. a kind of novel electric brush component according to claim 4, it is characterised in that: the fixing seat both ends are equipped with crimping, The shape of the crimping is arc-shaped.