CN2785236Y

CN2785236Y - Improved motor carbon brush seat structure

Info

Publication number: CN2785236Y
Application number: CN 200520016933
Authority: CN
Inventors: 张式银
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-20
Filing date: 2005-04-20
Publication date: 2006-05-31
Anticipated expiration: 2015-04-20

Abstract

The utility model provides an improved motor carbon brush seat structure. A carbon brush seat of the utility model is fixedly arranged at one end of an outer shell of a motor, a rotor is arranged in the motor, and one end of the rotor is provided with a ring collector, wherein at least more than one carbon brush group is arranged on the carbon brush seat, the carbon brush group comprises a positioning plate, a fixed block, a carbon brush, a torsional plate spring and a barrier sheet, wherein the fixed block is fixed on the positioning plate which is provided with a sliding slot. The carbon brush can slide and be arranged in the sliding slot. In addition, the contact surface of the carbon brush and the outer periphery of the ring collector are kept at a jointing state by the average pressurizing elastic force which is provided by the torsional plate spring. The carbon brush can be positioned in the sliding slot to be convenient for the installation of the rotor by the transverse pressure which is provided by the torsional plate spring. Furthermore, the carbon brush and the contact surface of the ring collector can keep optimum electric conductive performance by the homogeneous pressurizing elastic force which is provided by the torsional plate spring. So the carbon brush can be positioned in the sliding slot, and then the ring collector can be arranged on the carbon brush seat successfully.

Description

A kind of improved carbon brush for motor holder structure

Technical field

The utility model relates to a kind of improved carbon brush for motor holder structure, and it suppresses structure to relate in particular to a kind of improved carbon brush for motor.

Background technology

In the prior art, its rotational structure of motor is to provide electric current to make by rotor wire by external power source, and to produce magnetic field with the stator field interaction and rotate, wherein this electric current is by by carbon brush conducting with contacting of commutator; See also shown in Figure 1, it is a generalized section of commonly using carbon brush for motor, wherein the carbon brush 112 in carbon brush holder 11 its both sides chutes 111 of motor 1 one ends is that this carbon brush 111 of ejection is in contact with one another and conducting the outer peripheral edges of one end and commutator 121 by the expansion elastic force of a compression spring 113, and then drives rotor 12 rotations.

And the carbon brush of the formula of habit is by the ejection by its elastic force of compression spring, it is contacted with the lateral border of commutator and conduct electricity, yet the compression spring can produce the uneven situation of elastic force, make the wearing and tearing inequality of carbon brush, and it more can produce elastic fatigue in use for some time, cause the loose contact of carbon brush and commutator, good electrical conductivity can't be provided, influence the running of motor, and this rotor is when installing, the ejection that is subjected to this compression spring owing to carbon brush convexedly stretches in outside the chute with the distance of maximum, and making commutator be subjected to stopping can't pass through smoothly, and cause the defective that is difficult for is installed.

Summary of the invention

The purpose of this utility model is the defective that overcomes above-mentioned prior art, and a kind of improved carbon brush for motor holder structure is provided, and it can solve the defective of commonly using that structure can produce the inhomogeneous and elastic fatigue of elastic force of suppressing, and its conductivity is good and install easily.

The purpose of this utility model realizes by following technical proposals, a kind of improved carbon brush for motor holder structure provided by the utility model, it is that an end of its shell of motor is installed with a carbon brush holder, the inside of this motor has a rotor, one end of this rotor has a commutator, wherein this carbon brush holder is provided with at least more than one carbon brush group, this carbon brush group comprises a location-plate, one fixed block, one carbon brush, an one torsion leaf spring and a catch, wherein this fixed block is to be fixed on this location-plate, it has a chute can be for the ccontaining slippage of this carbon brush, and provide an average pressurization elastic force by a torsion leaf spring, make the contact-making surface of this carbon brush and the outer peripheral edges of commutator be kept a fit-state, this torsion leaf spring also can provide a transverse pressure, make this carbon brush be positioned chute inside to make things convenient for the installation of this rotor, to provide one to have uniform pressurization elastic force, make the contact-making surface of carbon brush and commutator can keep best conductivity, and carbon brush can be positioned in the chute, make commutator can be installed on carbon brush holder smoothly.

Below do a more detailed explanation at structure of the present utility model and specific embodiment conjunction with figs., make it it is had more to be well understood to.

Description of drawings

Fig. 1 is the generalized section of habit formula carbon brush for motor;

Fig. 2 is a perspective exploded view of the present utility model;

Fig. 3 is the sectional perspective decomposing schematic representation of the utility model carbon brush holder;

Fig. 4 is a combination generalized section of the present utility model.

Fig. 5 is one of operation chart of the utility model longitudinal profile;

Fig. 6 be the utility model longitudinal profile operation chart two;

Fig. 7 be the utility model longitudinal profile operation chart three;

Fig. 8 is the perspective exploded view of another embodiment of the utility model;

Fig. 9 is the combination generalized section of another embodiment of the utility model.

The primary clustering symbol description

Habit formula technology: 1 motor; 11 carbon brush holders; 111 chutes; 112 carbon brush; 113 compression springs; 12 rotors; 121 commutators.

The utility model: 2 carbon brush holders; 20 pedestals; 201 axis holes; 202 bearing pedestals; 203 screws; 21 location-plates; 211 reference columns; 212 screws; 213 open-works; 214 screws; 22 maintenance pieces; 221 chutes; 222 guide grooves; 223 open-works; 23 carbon brush; 231 contact-making surfaces; 232 groovings; 233 leads; 234 conductive contacts; 24 torsion leaf springs; 241 ejection ends; 25 catch; 3 housings; 31 saturating dead slots; 32 dust caps; 4 rotors; 41 commutators; 411 outer peripheral edges; 42 axle center; 43 bearings; 5 carbon brush holders; 50 pedestals; 501 axis holes; 502 bearing pedestals; 503 groovings; A carbon brush group.

Embodiment

See also shown in Fig. 2 to 4, carbon brush holder 2 of the present utility model is ends that are fixedly arranged on motor case 3, the inside of this motor has a rotor 4, one end of this rotor 4 has a commutator 41, wherein this carbon brush holder 2 is provided with at least more than one carbon brush group A, and this carbon brush group A comprises a location-plate 21, a fixed block 22, a carbon brush 23, a torsion leaf spring 24 and a catch 25:

Described carbon brush holder 2 is a circular pedestal 20, and the center has an axis hole 201 and a bearing pedestal 202, can wear for the axle center 42 of these rotor 4 one ends and bearing 43 fixing, on this pedestal 20 and be provided with several screws 203;

Described location-plate 21 is to be passed its open-work 213 and be fixed on the screw 203 of pedestal 20 by screw 214, has protruded out a reference column 211 on the plate body on it and be provided with a kerf 2111, can be for the plugging of a torsion leaf spring 24, on this location-plate 21 and be provided with screw 212;

Described fixed block 22 is to be fixedly arranged on the screw 212 of location-plate 21, has a chute 221 on it, and a side of this chute 221 has a guide groove 222, and its two ends are provided with open-work 223;

Described carbon brush 23 be an electric conductor its be arranged in the chute of this fixed block 22, and slide displacement within it, one end is that a contact-making surface 231 can be fitted mutually with the outer peripheral edges 411 of commutator 41, the other end is equipped with a lead 233 and makes connection one conductive contact 234, this end face is also cut and is provided with a grooving 232

Described torsion leaf spring 24 is to be fixedly arranged on the reference column 211 of location-plate 21, the one end has an ejection end 241, this ejection end 241 also can stretch in the guide groove 222 of this fixed block 22, and be resisted against the grooving 232 of this carbon brush 23, its pressurization elastic force is the end ejection of this carbon brush 23 toward contact-making surfaces 231, and keeps a normality to contact with the outer peripheral edges 411 of commutator 41;

This catch 25 is a L shaped lamellar body, and it is an end of being located at guide groove 222, to locate this torsion leaf spring 24 and to prevent that it from coming off;

As above-mentioned structure, see also shown in Fig. 5 and 6, when power supply via the contact-making surface 231 of carbon brush 23 with after commutator 41 its outer peripheral edges 411 contact conducting, this rotor 4 can produce magnetic fields and interact with stator field and rotate, this moment, this commutator 41 was a rotation status, this carbon brush 23 then provides an average pressurization elastic force by the ejection end 241 of this torsion leaf spring 24, make this carbon brush 23 and the commutator 41 normal contact conditions that keep, and provide a favorable conductive effect, because this torsion leaf spring 24 average pressurization elastic force that is provided as, even so, can not produce the elastic fatigue phenomenon through the use between often yet.

Please consult shown in Figure 7 again, 4 in order to prevent that carbon brush 23 from hindering passing through smoothly of this commutator 41 when desiring to wear this commentaries on classics hole, can be with this carbon brush 23 side shifting backward, this carbon brush 23 is moved in the chute 221 fully, this moment, the ejection end 241 of this torsion leaf spring 24 was to break away from this grooving 232, and a side of this carbon brush 23 of contact is made this carbon brush location motionless by its transverse pressure, and that so can have no to stop be arranged on commutator 41 position with respect to the contact-making surface 231 of this carbon brush 23.

Moreover housing 3 of the present utility model is a hollow cylinder, and its lateral border is provided with dead slot 31 with respect to the position of this carbon brush group A, can make things convenient for the operation and the replacing of this carbon brush 23, also can a sheathed dust cap 32 on this saturating dead slot 31.

Please consult shown in Fig. 8 and 9 again, that shown is another embodiment of the present utility model, wherein this carbon brush holder 5 is installed with at least one group of above carbon brush group A, the outer peripheral edges of this pedestal 50 are provided with cut-in without ball groove 503 with respect to the position of carbon brush group A, the center of this pedestal 50 is provided with axis hole 501 and bearing pedestal 502, can be fixing for wearing of rotor 4.

In sum, structure of the present utility model can effectively be improved the defective of habit formula, and good electrical conductivity is provided, and to improve the running efficiency of motor, is one to have the creation of marked improvement benefit.Above-listed detailed description is specifying at possible embodiments of the present utility model; and this embodiment is not in order to limit claim of the present utility model; allly do not break away from the equivalence that the utility model skill spirit made and implement or change, all should be contained in the claimed claim of the utility model.

Claims

1, a kind of improved carbon brush for motor holder structure, it mainly is that a end at its shell of motor is installed with a carbon brush holder, the inside of this motor has a rotor, one end of this rotor has a commutator, wherein this carbon brush holder is provided with at least more than one carbon brush group, and this carbon brush group comprises a location-plate, a fixed block, a carbon brush and a torsion leaf spring: it is characterized in that:

Described carbon brush holder, it is a circular pedestal, the center has an axis hole and a bearing pedestal, on this pedestal and be provided with several screws;

Described location-plate, it is fixed on the carbon brush holder, has protruded out a reference column on the plate body, on it and be provided with a kerf, can plugging for a torsion leaf spring;

Described fixed block, it is to be installed on the location-plate, has a chute on it, and a side of this chute has a guide groove, and its two ends are provided with open-work;

Described carbon brush, its be an electric conductor its be to be arranged in the chute of this fixed block, and can be in it slide displacement, one end is that a contact-making surface can be fitted mutually with the outer peripheral edges of commutator, the other end is equipped with a lead and makes and connect a conductive contact, and this end face is also cut and is provided with a grooving;

Described torsion leaf spring, it is to be fixedly arranged on the reference column of location-plate, the one end has an ejection end, this ejection end also can stretch in the guide groove of this fixed block, and be resisted against the grooving of this carbon brush, by of the end ejection of its pressurization elastic force, and keep a normality to contact with the outer peripheral edges of commutator with the past contact-making surface of this carbon brush.

2, improved carbon brush for motor holder structure according to claim 1 is characterized in that described holder is installed with a catch, and this catch is an end that is positioned at guide groove.

3, improved carbon brush for motor holder structure according to claim 1, the position that the lateral border that it is characterized in that described housing corresponds to the carbon brush group is provided with dead slot.

4, improved carbon brush for motor holder structure according to claim 1, the position that the pedestal lateral border that it is characterized in that described carbon brush holder corresponds to the carbon brush group is provided with the cut-in without ball groove.