CN201674101U

CN201674101U - Improved electric brush structure

Info

Publication number: CN201674101U
Application number: CN2010201869702U
Authority: CN
Inventors: 马耀辉
Original assignee: 许晓华
Priority date: 2010-05-11
Filing date: 2010-05-11
Publication date: 2010-12-15
Anticipated expiration: 2020-05-11

Abstract

The utility model discloses an improved electric brush structure, which comprises a brush frame plate, a carbon brush component, a rotating shaft and a torsion spring. The rotating shaft comprises a lower shaft sleeved with the torsion spring and an upper shaft provided with the carbon brush component, the diameter of the upper shaft is smaller than that of the lower shaft, a mounting end of the carbon brush component is in through connection onto the upper shaft, a lower projection is further disposed at the outer edge of the upper end surface of the lower shaft, and an upper projection clamping the lower projection is disposed on the outer wall of the lower portion of the mounting end of the carbon brush component when the carbon brush component is screwed out. When the electric brush and a reverser are in plug mounting, the carbon brush component is only required to be screwed out to clamp the lower projection with the upper projection, after plug mounting, the carbon brush component is only required to be shifted slightly to release clamping, and then the carbon brush component can reset to be in clamp connection with the reverser. The improved electric brush structure does not need any tooling and is extremely convenient.

Description

A kind of improved structure of electric brush

Technical field

The utility model relates to motor accessory field, relates in particular to motor brush.

Technical background

Brush is very extensive with application in exchanging series excited machine at direct current machine, and plays key effect.The applicant has applied for that on May 17th, 2006 name is called a kind of utility model patent of brush, notification number is CN2896613Y, it is simple in structure, reduced carbon brush and the mutual resistance of commutator, reduce noise, improved service behaviour, prolonged carbon brush useful life, but after it needs to adopt auxiliary mould with carbon brush outward turning location in assembling commutator process again with the commutator plug-in mounting, take out auxiliary mould then, carbon brush return and commutator clamping, operation is relatively more inconvenient like this.

Summary of the invention

Technical problem to be solved of the present utility model just provides a kind of improved structure of electric brush, and it improves on original brush architecture basics, makes it need not use auxiliary mould when assembling with commutator, and is simple in structure, easy to assembly.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of improved structure of electric brush, comprise the brush holder plate, carbon brush component, rotating shaft and torsionspring, described rotating shaft is that symmetry axis vertically is located on the brush holder plate end face with brush holder plate centre bore axis, it is characterized in that: described rotating shaft comprises the lower shaft of suit torsion spring and the axle of going up of carbon brush component is installed, the described shaft diameter of going up is less than following shaft diameter, described torsionspring one end is fixedly connected on the lower shaft, the torsionspring other end is connected the carbon brush component stage casing, described carbon brush component installation end switching is on last axle, eaves also is provided with a lower convexity outside the upper surface of described lower shaft, described carbon brush component installation end bottom outer wall be provided with when the carbon brush component outward turning and described lower convexity blocking on the projection.

The guiding surface that acts on when preferably, described lower convexity is provided with the carbon brush component outward turning.

As preferably, described carbon brush is L shaped structure.

Another kind of preferred, described carbon brush is the yi word pattern structure.

The utility model is made as lower shaft and last axle with rotating shaft, and eaves is established a lower convexity the upper surface of lower shaft outside, when carbon brush component installation end bottom outer wall is provided with in the carbon brush component outward turning and described lower convexity blocking on protruding, like this, with the commutator plug-in mounting time, only need make lower convexity and epirelief play blocking the carbon brush component outward turning, when plug-in mounting is finished, stir carbon brush component on only needing slightly, remove blocking, carbon brush component is return and commutator clamping, need not by any frock, very convenient.

Description of drawings

Fig. 1 is the utility model improved structure of electric brush structural representation;

Fig. 2 is the plan structure schematic diagram of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

As Fig. 1, shown in 2, a kind of improved structure of electric brush of the utility model, comprise brush holder plate 1, carbon brush component 2, rotating shaft and torsionspring 3, described rotating shaft is that symmetry axis vertically is located on the brush holder plate end face with brush holder plate centre bore axis, described rotating shaft comprises the lower shaft 41 of suit torsion spring 3 and the upward axle 42 of carbon brush component 2 is installed, the described shaft diameter of going up is less than following shaft diameter, described torsionspring 3 one ends are fixedly connected on the lower shaft 41, the torsionspring other end is connected the carbon brush component stage casing, 21 switchings of described carbon brush component 2 installation ends are on last axle 42, eaves also is provided with a lower convexity 43 outside the upper surface of described lower shaft 41, described carbon brush component installation end 21 bottom outer walls be provided with when the carbon brush component outward turning and described lower convexity blocking on the projection 22, the guiding surface 431 that described lower convexity 43 acts on when being provided with the carbon brush component outward turning.Described carbon brush is L shaped structure or in-line structure.

Claims

1. improved structure of electric brush, comprise the brush holder plate, carbon brush component, rotating shaft and torsionspring, described rotating shaft is that symmetry axis vertically is located on the brush holder plate end face with brush holder plate centre bore axis, it is characterized in that: described rotating shaft comprises the lower shaft of suit torsion spring and the axle of going up of carbon brush component is installed, the described shaft diameter of going up is less than following shaft diameter, described torsionspring one end is fixedly connected on the lower shaft, the torsionspring other end is connected the carbon brush component stage casing, described carbon brush component installation end switching is on last axle, eaves also is provided with a lower convexity outside the upper surface of described lower shaft, described carbon brush component installation end bottom outer wall be provided with when the carbon brush component outward turning and described lower convexity blocking on the projection.

2. improved structure of electric brush according to claim 1 is characterized in that: the guiding surface that described lower convexity acts on when being provided with the carbon brush component outward turning.

3. improved structure of electric brush according to claim 1 and 2 is characterized in that: described carbon brush is L shaped structure.

4. improved structure of electric brush according to claim 1 and 2 is characterized in that: described carbon brush is the yi word pattern structure.