WO2007059648A1

WO2007059648A1 - Carbon brush holder

Info

Publication number: WO2007059648A1
Application number: PCT/CN2005/002000
Authority: WO
Inventors: Fei-Chih Chung
Original assignee: Fei-Chih Chung
Priority date: 2005-11-25
Filing date: 2005-11-25
Publication date: 2007-05-31

Abstract

A carbon brush holder comprises a housing in which there are a carbon brush, a spring and a holder.The carbon brush, the spring and the holder arrange in turn in the housing. The carbon brush connects to a sheet by a wire.The spring is a leaf spring which has two coil portions at the ends. The holder has a stop against the coil portion. The housing has a conductive plate disposed in the outer wall and connected to a conductive piece by a wire.

Description

Carbon brush base

The present invention relates to a carbon brush base, and more particularly to a carbon brush base for a motor motor to be provided with a carbon brush. Background technique

Motor motors, commonly known as motors, have been widely used in various fields, such as: power generation, pumping or driving devices, etc. However, brush motors must use carbon brush contact commutators (commutators) to make them The internal current is commutated, and the carbon brushes are all provided on the carbon brush base at one end of the motor housing.

The existing carbon brush base, as shown in FIG. 4, has a hollow casing 60. One end of the casing 60 is screwed with a cap 6 1 and the other end is provided with an outlet 6 2 ;

A conductive sheet 70 is fixed in the housing 60. One end of the conductive sheet 70 extends outward from the outlet 62 of the housing 60. The conductive sheet 70 is connected to one end of the cap 61. a conductive ring piece 7 1 ; - a carbon brush 80 , one end of which is pushed by a spring 8 1 , the other end of the spring 8 1 is connected to a piece of the body 8 2 , and the carbon brush 80 is connected to the piece 8 2 There is a wire 8 3 .

In use, the carbon brush 80 can be placed into the housing 60 by the end of the housing 60 provided with the cap 6 1 , and the carbon brush 80 will extend outward from the outlet 6 2 , and then the cap 6 1 The housing 60 is screwed to each other, and the sheet 82 is located between the cap 61 and the conductive ring 71.

When the motor is running, the carbon brush 80 is gradually worn by the commutator of the motor, and the spring 8 1 continues to push the carbon brush 80 out of the housing 60, thus ensuring that the carbon brush 80 is in contact with the commutator. A conductive loop is formed.

When all elastic objects are within their elastic limits, the magnitude of their forces and their length changes The amount is proportional, in other words, when the spring 8 1 is squeezed, the deformation caused by it will increase, and the elasticity generated by the spring 8 1 will also increase, and at the beginning of the use of the carbon brush 80, the spring 8 1 will try to squeeze the sheet 8 2 so that it contains more carbon brushes ⁸⁰ in the housing ⁶⁰ , and the spring 8 1 is thus squeezed, so that the elastic force and deformation are the largest. ;

However, when the spring 8 1 is in the state of maximum elasticity, the carbon brush 80 is subjected to the spring.

The thrust of 8 1 is also the largest, so the closer the contact between the carbon brush 80 and the commutator 90 is, the higher the generated or output power is, or the maximum, but the carbon brush 80 The greater the loss.

Please refer to Figure 5, after one end of the loss, the carbon brush 80 will be worn and shortened to a certain length, at this time the spring 8 1 is no longer strongly squeezed, the elastic force is the smallest, so the carbon brush 8 There is no close contact between 0 and the commutator 90, and the amount of electricity generated or output is also reduced.

In summary, the change in the spring force of the spring 8 1 directly affects the carbon brush 80 and the commutator.

The degree of contact between 90 will also affect the loss of the carbon brush 80, and the two will affect the amount of electricity, so how to achieve an average between loss and elasticity is a problem that must be improved. Summary of the invention

The technical problem to be solved by the present invention is to provide a carbon brush base which can reduce the number of carbon brush replacements and save maintenance time to overcome the aforementioned drawbacks of the existing carbon brush base.

To this end, the technical means of the present invention is to provide a carbon brush base having a hollow housing, which is provided with a receiving inlet and a through opening at both end faces, and a slot is formed on the outer side wall of the housing. The inner wall of the body is axially spaced with a plurality of slots;

a carbon brush disposed in the casing, one end of the carbon brush extending outward from the outlet, the carbon brush The other end is connected to a piece of wire by wires;

An elastic body having a reed, the two ends of the reed are respectively connected with a curled reed end, the reed end is in contact with the inner wall of the housing, and one end of the carbon brush connected with the wire and the reed are pushed against each other; The locating member is disposed in the housing by the slot of the housing, and the edge of the opening of the positioning member can be pushed against the reed of the elastic body, and the stopping portion is connected to the edge of the opening of the positioning member. The stopping portion can be pushed against the reed end of the elastic body to fix the elastic body to the housing;

a conductive sheet, one end of which is connected with a wire by a wire, the conductive piece is disposed in the slot of the housing, and the chip, the sheet of the carbon brush and the positioning member are sequentially stacked;

A cap is closable with one end of the housing having an inlet, and the cap can fix the electric piece, the sheet of the carbon brush, the positioning member, the elastic body and the carbon brush in the housing.

In use, the elastomer has stable strength and elasticity, so the carbon brush can be effectively pushed out of the shell by the elastomer, so that the carbon brush is least worn when contacting the commutator, thus ensuring the service life of the carbon brush. , as well as electrical stability.

In addition, the electric piece and the conductive piece are connected by wires, and the wire has better ductility. Even when the carbon brush is replaced, the wire is bent many times, and the wire does not break, so that the carbon brush base can be ensured. Usability.

The invention overcomes the defects of the prior carbon brush base, which is provided with a carbon brush pushed by an elastic body in a hollow casing, and the elastic body can provide stable elasticity without changing the compression amount. The characteristics of the constant force can be designed in a reasonable elastic range so that the carbon brush can wear the least when contacting the commutator, thereby ensuring the service life and electrical stability of the carbon brush. In addition, the conductive sheet and the electric sheet are preferably better. The ductile wire connection, so that after the wire is bent many times, the wire can still maintain its integrity, and the carbon brush base can replace the carbon brush from the motor part, but the carbon brush can replace the carbon brush to keep the motor in use state. And the overall design can reduce the number of carbon brush replacements and festivals Maintenance time. DRAWINGS

Figure 1 is a perspective exploded view of the present invention.

Figure 2 is a cross-sectional view of the present invention.

Figure 3 is a cross-sectional view of the use state of the present invention.

4 is a cross-sectional view of a conventional carbon brush base.

Figure 5 is another cross-sectional view of a conventional carbon brush base.

Description of the reference numerals:

1 0, housing 1 0 1 , thread

1 1, set the entrance 1 2, wear the exit

1 3, fixing hole 1 4, cap

1 4 1 , Inner screw 1 5, slot

2 0, carbon brush 2 1, wire

2 2, sheet 3 0, elastomer

3 1, reed 3 2, reed end

4 0, positioning parts 4 1, opening

4 2, the blocking part 5 0, conductive sheet

5 1. Stop 5 2, wire

5 3, the film 6 0, the shell

6 1-, cap 6 2, exit

7 0, conductive sheet 7 1, conductive ring

8 0, carbon brush 8 1, spring

8 2, sheet 8 3, wire 9 0, commutator specific implementation

The present invention is a carbon brush base, as shown in FIG. 1 and FIG. 2, which has a hollow casing 10, and both ends of the casing 10 are respectively provided with a inlet 1 1 and a through outlet 1 2, at the inner wall of the housing 10 and at an axial spacing from the inlet 1 1 and the outlet 1 2, a plurality of slots 15 are provided, one end of the housing 10 and adjacent to the inlet. The wall is provided with a thread 1 0 1 , and the outer side wall of the housing 10 is provided with a slot 13;

a carbon brush 20 is disposed in the housing 10, one end of the carbon brush 20 extends outwardly from the through-out port 1 2, and the other end of the carbon brush 20 is connected to the body 2 2 by a wire 2 1;

An elastic body 30 has a reed 3 1 , and two ends of the reed 31 are respectively connected with a curled reed end 3 2 , and the reed end 3 2 is in contact with the inner wall of the housing 30 , and the carbon brush 20 is connected One end of the wire 2 1 and the reed 31 1 are pushed against each other;

A positioning member 40 is a π-shaped piece, and the positioning member 40 is disposed in the housing 10 by the slot 15 of the housing 10, and the positioning member 40 has one end of the opening 41. The edge of the elastic piece 30 can be pushed against each other, and a stopper portion 4 2 is connected to the edge of the opening 4 1 of the positioning member 40, and the stopper portion 4 2 can be coupled with the elastic body 30. The reed end 3 2 pushes each other, and the elastic body 30 is fixed to the housing 10;

A conductive sheet 50 is formed with a stopper 5 1 on both sides thereof. One end of the conductive sheet 50 is connected with a wire 5 2 via a wire 5 2 , and the conductive piece 50 is disposed in the slot 1 of the housing 10 3, and the free end of the conductive piece 50 is inclined away from the housing 10 to facilitate interconnection with other wires, and the stopper 51 will be mutually abutted against the edge of the slot 13, thereby conducting electricity. The piece 50 is fixed in the slot 13 3, and the chip 5 3 , the sheet 2 2 of the carbon brush 20 and the positioning member 40 are sequentially stacked; A cap 14 can be overlapped with one end of the housing 10 having the inlet 1 1 , and the inner side of the cap 14 is provided with an internal thread 1 which can be screwed to the housing 10 thread 1 0 1 4 1, the cap 14 can fix the electric piece 53, the sheet 2 of the carbon brush 20, the positioning member 40, the elastic body 30 and the carbon brush 20 in the casing 10.

In actual use, please refer to FIG. 2 and FIG. 3, the elastic body 30 has the characteristics of outputting stable constant force and elasticity, so the carbon brush 20 can be effectively pushed out by the reed 3 1 of the elastic body 30. The housing 10 is evenly worn by the carbon brush 20 when it contacts the commutator, thus ensuring the service life and electrical stability of the carbon brush 20.

When the carbon brush 20 is pressed from the outside, the carbon brush 20 is pressed into the positioning member 40 by the opening '4 1 together with the reed 3 1 .

When the carbon brush 20 is replaced, the cap 1 4 can be removed from the housing 10, and the electric piece 5 2, the piece 2 2, the positioning piece 40, the elastic body 30 and the carbon brush 20 will mutually Separating, the positioning member 40, the elastic body 30 and the carbon brush 20 can be taken out from the casing 10, and the other carbon brush 20 is replaced, and the elastic body 30 and the positioning member 40 are sequentially arranged. Return to the housing 10.

Since the electric piece 53 and the conductive piece 50 are connected to each other by the wire 52, the wire 52 has better ductility, that is, when the carbon brush 20 is replaced, the wire 52 is bent a plurality of times, and the wire 5 2 It does not break, which ensures the usability of the carbon brush base.

In summary, the elastic body 30 can stably push the carbon brush 20 out of the casing 10 by a constant force and elasticity, so that the carbon brush 20 can be uniformly worn, thus ensuring the service life and electrical stability of the carbon brush 20. Sex.

In addition, the wire 52 has better ductility, so that there is no possibility of being bent apart from each other between the conductive piece 50 and the electric piece 53, so that the carbon brush base can ensure the usability. .

Claims

Claim

What is claimed is: 1. A carbon brush base, comprising:

a hollow housing, the two ends of which are respectively provided with a receiving inlet and a through opening, the outer side wall of the housing is provided with a slot, and the inner wall of the housing is axially spaced apart with a plurality of slots;

a carbon brush, which is disposed in the casing, one end of the carbon brush extends outward from the outlet, and the other end of the carbon brush is connected with a wire by a wire;

An elastic body having a reed, the two ends of which are respectively connected with a curled reed end, the reed end being in contact with the inner wall of the casing, and one end of the carbon brush to which the wire is connected and the reed are pushed against each other ;

a positioning member having an opening, the positioning member being disposed in the housing by the slot of the housing, the edge of the opening of the positioning member being engagable with the spring reed, and the edge of the opening of the positioning member is connected a blocking portion that can be pressed against the reed end of the elastic body to fix the elastic body to the housing;

- a conductive sheet, one end of which is connected to the electric piece by a wire, the conductive piece is disposed in the slot of the casing, and the electric piece, the sheet of the carbon brush and the positioning piece are sequentially stacked;

A cap is closable with one end of the housing having an inlet for securing the sheet, the carbon brush sheet, the positioning member, the elastomer and the carbon brush in the housing.

The carbon brush base according to claim 1, wherein the two sides of the conductive sheet are respectively convexly formed with a stopper that can abut against the edge of the slot.

The carbon brush base according to claim 2, wherein the positioning member is a sheet having a π-shaped cross section.

4. The carbon brush base according to claim 3, wherein one end of the housing and adjacent to the outer peripheral wall of the inlet and the inner side of the cap are provided with threads that can be screwed together.

.

The carbon brush base according to claim 4, wherein the recess of the housing is at a position relative to the inlet and the outlet.

The carbon brush base according to claim 5, wherein the free end of the conductive sheet is inclined toward a direction away from the housing.