CN204633510U - For the sheet spring of brush, brush holder assembly and motor - Google Patents
For the sheet spring of brush, brush holder assembly and motor Download PDFInfo
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- CN204633510U CN204633510U CN201520198562.1U CN201520198562U CN204633510U CN 204633510 U CN204633510 U CN 204633510U CN 201520198562 U CN201520198562 U CN 201520198562U CN 204633510 U CN204633510 U CN 204633510U
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- brush
- elastic arm
- connecting portion
- holder assembly
- spring
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Abstract
The utility model provides a kind of sheet spring for brush, brush holder assembly and motor.This sheet spring comprises: connecting portion, and described connecting portion is for being fixed to brush carriage; And the first elastic arm to extend from described connecting portion and the second elastic arm, wherein, described first elastic arm is used for compressing the first brush, and described second elastic arm is used for compressing the second brush.This brush holder assembly comprises sheet above spring.This motor comprises above-mentioned brush holder assembly.This sheet spring can compress two brushes simultaneously, and the assembling of the structure of brush carriage and sheet spring is simplified.
Description
Technical field
The utility model relates to technical field of motors, and specifically, the utility model relates to a kind of sheet spring for brush, is provided with the brush holder assembly of this such sheets spring and is provided with the motor of such brush holder assembly.
Background technology
Brush is the vitals in motor (motor that such as automobile ABS system uses), and when rotor rotates, brush needs and armature spindle, and the commutator specifically on armature spindle keeps engaging so that the stable transfer of electric current.
With reference to figure 1, in the motor of prior art, especially in the motor used in automotive field, on brush carriage, helical torsional spring 1a' and 1b' that brush 1a and 1b is equipped with by correspondence compresses, to utilize when rotor rotates the elastic force of spring to push down brush, make brush and armature spindle keep fitting, thus stable current delivery is provided.There are the following problems in such design: 1. each brush is equipped with independent spring the structure of brush carriage must be caused more complicated, and the workload required when assembling is also larger, and such result is higher cost; 2. owing to being difficult to the invariably property of there are differences between each spring or in spring assembling process, such as elastic force, elastic force applies position (level height) etc., specifically, same spring will be arranged on left side and right side symmetrically, that bottom spring leg pushes down brush when being then contained in left side, but be contained in right side and can only push down brush by top spring leg, this will cause the condition of work property of there are differences of each brush, this otherness may cause certain brush earlier to lose efficacy, so this otherness is also less desirable.
Utility model content
The purpose of this utility model is to provide a kind of sheet spring for brush, and the brush holder assembly being provided with this such sheets spring and the motor being provided with such brush holder assembly are to solve or at least to alleviate above-described or existing for other prior art problem.
For realizing above object, according to one side of the present utility model, provide a kind of sheet spring for brush, wherein, described spring comprises:
Connecting portion, described connecting portion is for being fixed to brush carriage; And
The first elastic arm extended from described connecting portion and the second elastic arm, wherein, described first elastic arm is used for compressing the first brush, and described second elastic arm is used for compressing the second brush.
In an alternative embodiment, described first elastic arm and described second elastic arm extend to be formed two sections of arc-shaped elastic arms with the close center of curvature in opposite direction.
In an alternative embodiment, described first elastic arm and described second elastic arm are relative to described connecting portion symmetry.
According to another aspect of the present utility model, provide a kind of brush holder assembly, wherein, described brush holder assembly comprises:
Brush carriage, described brush carriage comprises the centre bore for holding armature spindle, is radially respectively used to two conduits of accommodation first brush and the second brush from described centre bore;
Be contained in the first brush in described two conduits and the second brush, described first brush and the second brush have the second end face of the first end face towards described centre bore and described centre bore dorsad; And
Sheet spring, described spring comprises:
Connecting portion, described connecting portion is fixed on described brush carriage; And
The first elastic arm extended from described connecting portion and the second elastic arm, wherein, described first elastic arm compresses the second end face of described first brush, described first elastic arm is loaded with the power applied to the second end face of described first brush to described centre bore by pre-elasticity, and, described second elastic arm compresses the second end face of described second brush, and described second elastic arm is loaded by pre-elasticity with the power applied to the second end face of described second brush to described centre bore.
In an alternative embodiment, described first elastic arm and described second elastic arm extend to be formed two sections of arc-shaped elastic arms of the center of curvature had close to described centre bore in opposite direction.
In an alternative embodiment, described first elastic arm and described second elastic arm are relative to described connecting portion symmetry.
In an alternative embodiment, described first elastic arm and described second elastic arm tip are provided with the composition surface with the second end joined of described brush.
In an alternative embodiment, described connecting portion is recessed to described armature spindle direction.
In an alternative embodiment, described connecting portion comprises the first arcuate segments successively, second arcuate segments and the 3rd arcuate segments, the center of curvature of described first arcuate segments and described 3rd arcuate segments is at centre hole side, the center of curvature of described second arcuate segments, in the outside relative with described centre hole side, is provided with installing hole in described second arcuate segments.
According to one side more of the present utility model, provide a kind of motor, wherein, described motor comprises any one brush holder assembly above-described.
The beneficial effects of the utility model are, support two brushes can make brush carriage designs simplification by using single spring, and sheet spring assembly work amount is reduced, thus decrease manufacture and the processing cost of motor.Further, the design of the first elastic arm and the second elastic arm symmetry makes the first brush substantially be in identical condition of work with the second brush, makes finished product motor performance more stable.Further again, for the helical torsional spring of routine, the power that compresses that the elastic arm of sheet spring applies has the longer arm of force, thus makes to require suitably to reduce to the elastic force of sheet spring itself.
Accompanying drawing explanation
Read following detailed description in conjunction with the drawings, principle of the present utility model will become more apparent, wherein:
Fig. 1 is the stereogram of brush holder assembly conventional in prior art;
Fig. 2 is the stereogram of the brush holder assembly according to embodiment of the present utility model; And
Fig. 3 is the stereogram of the sheet spring according to embodiment of the present utility model.
List of parts:
1 spring
2 brush carriages
3 centre bores
41 first brushes
42 second brushes
10 connecting portions
101 first arcuate segments
102 second arcuate segments
103 the 3rd arcuate segments
104 installing holes
20 first elastic arms
201 first elastic arm composition surfaces
30 second elastic arms
301 second elastic arm composition surfaces
embodiment:
Easy understand, according to the technical solution of the utility model, is not changing under the utility model connotation, and one of ordinary skill in the art can propose the various structures mode that can mutually replace and implementation.Therefore, following embodiment and accompanying drawing are only the exemplary illustrations to the technical solution of the utility model, and should not be considered as of the present utility model all or the restriction be considered as technical solutions of the utility model or restriction.
The orientation terms such as the up, down, left, right, before and after mentioned in this manual or may mention, front, the back side, top, bottom carry out defining relative to the structure shown in each accompanying drawing, they are relative concepts, therefore likely can residing for it diverse location, different using state and correspondingly changing.So, also these or other orientation term should be interpreted as restricted term.
With reference now to Fig. 2, it illustrates the brush holder assembly according to an embodiment of the present utility model, this brush holder assembly comprises: brush carriage 2, and generally brush carriage 2 is in disc, such as, be made up of plastics or other insulating material.Described brush carriage 2 comprises the centre bore 3 for holding armature spindle, and after motor assembling, armature spindle passes vertically through from this centre bore.Two conduits for holding the first brush 41 and the second brush 42 radially outward disperse extension from described centre bore 3.This brush holder assembly also comprises the first brush 41 and the second brush 42 be contained in described two conduits.Should be appreciated that brush carriage 2 also can comprise plural brush conduit or brush, in such cases, all the other brushes can rely on conventional helical torsional spring to compress.Described first brush 41 and the second brush 42 have the second end face of the first end face (namely in figure close to the end face of centre bore 3) towards described armature spindle and described armature spindle dorsad.As known in the art, when armature spindle rotates, the first end face of maintenance first brush 41 and the second brush 42 is needed to engage with armature spindle, so that the stable transfer of electric current, in conventional design, two helical torsional springs being respectively used to the first brush 41 and the second brush 42 are adopted to apply radially inner pressure to the first brush 41 and the second brush 42, when armature spindle rotates, this radial load overcomes the rotor turns impulsive force suffered by brush, brush is made to keep contacting with commutator, but, according to embodiment of the present utility model, adopt single spring 1 to compress the first brush 41 and the second brush 42 simultaneously, the concrete structure of sheet spring 1 as detailed below.
With reference now to Fig. 3, it illustrates the sheet spring 1 according to a specific embodiment of the present utility model.Sheet spring 1 comprises connecting portion 10, and described connecting portion 10 is for being fixed to brush carriage 2; Described spring 1 also comprises the first elastic arm 20 and the second elastic arm 30 extended from described connecting portion 10, and wherein, described first elastic arm 20 is for compressing the first brush 41 (Fig. 2), and described second elastic arm 30 is for compressing the second brush 42.After assembling, described first elastic arm 20 and described second elastic arm 30 is resiliently biased or prestrain, thus provide radial load respectively to described first brush 41 and described second brush 42, to make brush keep engaging with armature spindle when armature spindle rotates.
In one embodiment, described first elastic arm 20 and described second elastic arm 30 extend to be formed two sections of arc-shaped elastic arms of the center of curvature had close to described centre bore in opposite direction.As can be seen from Fig. 2, the sheet spring 1 on the whole basic circumference of the periphery along brush carriage 2 extends, mate with the profile design of brush carriage 2, make the first elastic arm 20 and the second elastic arm 30 can apply to point to the first brush 41 and the second brush 42 pressure of armature spindle place axis thus.Should be understood that, as shown in FIG., whole spring 1 circumferentially about 90 °, but in an alternative embodiment, when design allow, sheet spring 1 can extend any angle in the circumferential, preferably, sheet spring 1 circumferentially 90 °-180 °.
In one embodiment, described first elastic arm 20 is symmetrical relative to described connecting portion 10 with described second elastic arm 30, i.e. the first elastic arm 20 and the second elastic arm 30 shape correspondence, material unanimously makes described first elastic arm 20 be in identical condition of work with described second elastic arm 30, thus when rotor rotates, the radial thrust be applied on the first brush 41 and the second brush 42 by the first elastic arm 20 and the second elastic arm 30 is consistent, and namely makes the first brush 41 and the second brush 42 be in identical condition of work.
In one embodiment, described first elastic arm 20 and described second elastic arm 30 tip are respectively equipped with the composition surface 201 and 301 for the second end joined with described first brush 41 and described second brush 42, and the first elastic arm 20 is contacted in face with the second brush 42 with the first brush 41 and the second elastic arm 30.When assembling complete, described composition surface 201 is basic vertical with radial direction with 301, and this makes to be applied to power on the first brush 41 and the second brush 42 radially by the first elastic arm 20 and the second elastic arm 30.
In one embodiment, described connecting portion 10 is recessed to described armature spindle direction.Preferably, described connecting portion 10 comprises the first arcuate segments 101 successively, second arcuate segments 102 and the 3rd arcuate segments 103, the center of curvature of described first arcuate segments 101 and described 3rd arcuate segments 103 is in centre hole side (i.e. armature spindle side), and the center of curvature of described second arcuate segments 102 is in the outside relative with described centre hole side, also be, described first arcuate segments 101 and described 3rd arcuate segments 103 are towards armature spindle side, described second arcuate segments is towards outside, installing hole 104 is provided with in described second arcuate segments, described spring 1 is for fixing on brush carriage 2 by installing hole 104.Be to be understood that, design and the connecting portion 10 of connecting portion 10 are not limited to above concrete configuration with the connected mode of brush carriage 2, those skilled in the art can envision other modification various under instruction herein, and these modification also should be regarded as in scope of the present utility model.
According to the sheet spring for brush of the present utility model, it is low that the brush holder assembly being equiped with this sheet spring and the motor being equiped with this brush holder assembly have cost, the features such as stable performance, specifically, single spring is used for against two brushes, the structure of brush carriage being simplified, and sheet spring easily can be mounted to brush carriage, structure and the simplification of installing are embodied in the reduction of manufacturing cost.Further, due to the symmetric design of the first elastic arm and the second elastic arm, during machine operation, the first brush and the second brush are under substantially identical condition of work, such as be in substantially identical and under being in the effect of the radial thrust in same level, this makes machine operation more stable.
Should be understood that, the utility model is intended to protect the sheet spring for brush, is equiped with the brush holder assembly of this sheet spring and is equiped with the motor of this brush holder assembly.
All parts, only in order to more clearly describe principle of the present utility model, wherein being specialized and principle of the present utility model is easier to understand by specific embodiment described above.When not departing from scope of the present utility model, those skilled in the art easily can carry out various amendment to the utility model.Therefore should be understood that, scope of the present utility model should not limited by above specific embodiment.
Claims (10)
1. for a sheet spring for brush, it is characterized in that, described spring comprises:
Connecting portion, described connecting portion is for being fixed to brush carriage; And
The first elastic arm extended from described connecting portion and the second elastic arm, wherein, described first elastic arm is used for compressing the first brush, and described second elastic arm is used for compressing the second brush.
2. according to claim 1 spring, is characterized in that, described first elastic arm and described second elastic arm extend to be formed two sections of arc-shaped elastic arms with the close center of curvature in opposite direction.
3. according to claim 2 spring, is characterized in that, described first elastic arm and described second elastic arm are relative to described connecting portion symmetry.
4. a brush holder assembly, is characterized in that, described brush holder assembly comprises:
Brush carriage, described brush carriage comprises the centre bore for holding armature spindle, is radially respectively used to two conduits of accommodation first brush and the second brush from described centre bore;
Be contained in the first brush in described two conduits and the second brush, described first brush and the second brush have the second end face of the first end face towards described centre bore and described centre bore dorsad; And
Sheet spring, described spring comprises:
Connecting portion, described connecting portion is fixed on described brush carriage; And
The first elastic arm extended from described connecting portion and the second elastic arm, wherein, described first elastic arm compresses the second end face of described first brush, described first elastic arm is loaded with the power applied to the second end face of described first brush to described centre bore by pre-elasticity, and, described second elastic arm compresses the second end face of described second brush, and described second elastic arm is loaded by pre-elasticity with the power applied to the second end face of described second brush to described centre bore.
5. brush holder assembly according to claim 4, is characterized in that, described first elastic arm and described second elastic arm extend to be formed two sections of arc-shaped elastic arms of the center of curvature had close to described centre bore in opposite direction.
6. brush holder assembly according to claim 5, is characterized in that, described first elastic arm and described second elastic arm are relative to described connecting portion symmetry.
7. brush holder assembly according to claim 4, is characterized in that, described first elastic arm and described second elastic arm tip are provided with the composition surface with the second end joined of described brush.
8. brush holder assembly according to claim 4, is characterized in that, described connecting portion is recessed to described centre bore direction.
9. brush holder assembly according to claim 8, it is characterized in that, described connecting portion comprises the first arcuate segments successively, second arcuate segments and the 3rd arcuate segments, the center of curvature of described first arcuate segments and described 3rd arcuate segments is at centre hole side, the center of curvature of described second arcuate segments, in the outside relative with described centre hole side, is provided with installing hole in described second arcuate segments.
10. a motor, is characterized in that, described motor comprises the brush holder assembly according to any one of claim 4-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198562.1U CN204633510U (en) | 2015-04-03 | 2015-04-03 | For the sheet spring of brush, brush holder assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198562.1U CN204633510U (en) | 2015-04-03 | 2015-04-03 | For the sheet spring of brush, brush holder assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633510U true CN204633510U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520198562.1U Active CN204633510U (en) | 2015-04-03 | 2015-04-03 | For the sheet spring of brush, brush holder assembly and motor |
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| Country | Link |
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| CN (1) | CN204633510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477869A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
-
2015
- 2015-04-03 CN CN201520198562.1U patent/CN204633510U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477869A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
| CN117477869B (en) * | 2023-12-27 | 2024-03-22 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |