CN114389118A

CN114389118A - Motor carbon brush holder

Info

Publication number: CN114389118A
Application number: CN202111550789.4A
Authority: CN
Inventors: 李远财
Original assignee: Zhejiang Hongyin Electromechanical Technology Co ltd
Current assignee: Zhejiang Jude Electromechanical Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-22
Anticipated expiration: 2041-12-17
Also published as: CN114389118B

Abstract

The invention discloses a carbon brush holder of a motor, wherein a carbon brush component and a filter component are respectively arranged on two surfaces of an installation plate, so that the structure of the carbon brush holder is clearer and simpler, the production and the assembly are convenient, and the mutual influence of the carbon brush component and the filter component in the working process is avoided; the connecting block enables the carbon brush to move more firmly and stably, avoids the carbon brush from deviating and further enables the current to be conducted more stably; the capacitor limiting groove and the inductor component limiting groove enable the assembly of the filter component to be firmer and more stable, and the capacitor limiting part arranged in the capacitor limiting groove and the inductor component limiting part arranged in the inductor component limiting groove enable the assembly of the filter component to be firmer and more stable, so that the current conduction is more stable; the movable spring wraps the carbon brush, so that the movable direction of the carbon brush can be limited by the movable spring, excessive contact between the carbon brush and the brush holder is avoided, excessive pushing acting force is consumed, the contact between the carbon brush and the rotating body is more stable, and further the conduction of current is more stable.

Description

Motor carbon brush holder

Technical Field

The invention relates to the field of manufacturing and research and development of motor equipment, in particular to a carbon brush holder of a motor.

Background

The carbon brush holder is used for applying pressure on the carbon brush which is in sliding contact with the surface of the commutator or the collecting ring through the spring so as to lead the carbon brush holder to stably conduct current between the fixed body and the rotating body; for the motor, the brush holder and the carbon brush are very important components; however, when the rotating body rotates, the rotating body inevitably contacts the carbon brush, so that the carbon brush in the carbon brush holder, the brush holder of the carbon brush and even the filter assembly deviate, current cannot be stably conducted, and the work of the motor is influenced;

in the prior art, the movable spring generally adopts a compression spring, the compression spring is contacted with one end of the carbon brush, so that the carbon brush is troublesome to assemble, the carbon brush can only receive the pushing acting force of the compression spring in one direction, the compression spring cannot limit the movable direction of the carbon brush, and the movable direction of the carbon brush can only be limited by the contact of the brush holder and the carbon brush; the contact between the brush holder and the carbon brush can counteract the pushing action force of the compression spring, so that the contact between the carbon brush and the rotating body is unstable, and further, the current cannot be stably conducted.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides the carbon brush holder of the motor, which has the advantages of simple structure, reasonable design, firm assembly and stable current conduction.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a motor carbon brush holder comprises a mounting plate, a carbon brush assembly and a filtering assembly, wherein the carbon brush assembly and the filtering assembly are respectively arranged on two sides of the mounting plate;

the carbon brush assembly is arranged on the lower surface of the mounting plate and comprises a carbon brush and a brush holder, and the brush holder is arranged on the mounting plate; a brush holder space is arranged in the brush holder, and a brush holder opening corresponding to the brush holder space is arranged on the brush holder; the carbon brush enters the brush holder space through the brush holder opening and moves in the brush holder space; the carbon brush assembly comprises a carbon brush connecting block, one end of the carbon brush connecting block is connected with the mounting plate, and the other end of the carbon brush connecting block penetrates through the brush holder and is connected with the carbon brush; the carbon brush assembly further comprises a movable spring, and the movable spring wraps the carbon brush and is in contact with the brush holder;

the filter assembly is arranged on the upper surface of the mounting plate and comprises a filter capacitor and a filter inductor assembly, a capacitor limiting groove and an inductor assembly limiting groove are formed in the upper surface of the mounting plate, the assembly pins of the filter capacitor are arranged in the capacitor limiting groove, and the assembly pins of the filter inductor assembly are arranged in the inductor assembly limiting groove; the capacitor limiting groove is internally provided with a capacitor limiting part for limiting the position of the assembly pin of the filter capacitor, and the inductor component limiting groove is internally provided with an inductor component limiting part for limiting the position of the assembly pin of the filter inductor component.

Furthermore, the brush holder is columnar, and the opening of the brush holder is arranged at one end of the brush holder; the brush holder comprises an assembling buckle; the assembly buckle is arranged on the lower surface of the brush holder and connected with the mounting plate so as to fix the brush holder.

Furthermore, the brush holder also comprises a fastener positioning part; the fastener positioning parts are arranged on two sides of the brush holder and located at one end where the brush holder opening is located, and the fastener positioning parts are in contact with the movable spring.

Furthermore, the movable spring adopts a binocular constant force spiral spring which comprises a limiting part and a contact part; the limiting parts are arranged at two ends of the contact part, the limiting parts are in contact with the fastener positioning parts, the contact part enters the brush holder space, and one end, far away from the fastener positioning parts, of the carbon brush is wrapped.

Further, the carbon brush connecting block is connected with the upper surface of the carbon brush; a brush holder notch is formed in the upper surface of the brush holder, and one end of the carbon brush connecting block penetrates through the brush holder notch to be connected with the carbon brush; the shape of the brush holder gap corresponds to the moving range of the carbon brush, and when the carbon brush moves in the brush holder space, the carbon brush connecting block moves correspondingly in the brush holder gap; the lower surface of the mounting plate is also provided with a limit buckle, a limit space is arranged in the limit buckle, and the other end of the carbon brush connecting block is limited in position by the limit buckle and can synchronously move with the carbon brush in the limit space of the limit buckle.

Furthermore, a limiting plate is arranged on the upper surface of the mounting plate and arranged along the edges of the capacitor limiting groove and the inductor assembly limiting groove.

Furthermore, an inductance assembly mounting seat is arranged on the upper surface of the mounting plate, and the filter inductance assembly is arranged in the inductance assembly mounting seat.

Furthermore, the capacitor limiting part comprises a first capacitor limiting block and a second capacitor limiting block, and the assembly pin of the filter capacitor is arranged between the first capacitor limiting block and the second capacitor limiting block.

Furthermore, the inductance component limiting part comprises a first inductance component limiting block and a second inductance component limiting block, and the assembly pin of the filter inductance component is arranged between the first inductance component limiting block and the second inductance component limiting block; the lower end face of the first inductance component limiting block and the lower end face of the second inductance component limiting block are connected with the bottom face of the inductance component limiting groove, the gap between the lower end face of the first inductance component limiting block and the lower end face of the second inductance component limiting block is larger than the diameter of the assembly foot of the filter inductance component, the gap between the upper end face of the first inductance component limiting block and the upper end face of the second inductance component limiting block is smaller than the diameter of the assembly foot of the filter inductance component, and the first inductance component limiting block and the second inductance component limiting block are made of elastic materials.

Furthermore, the middle of the mounting plate is provided with a mounting plate through hole for the rotor to pass through; the carbon brush assembly comprises a first brush holder and a second brush holder, the first brush holder and the second brush holder correspond to each other, and a brush holder opening of the first brush holder is opposite to a brush holder opening of the second brush holder; the carbon brushes comprise a first carbon brush and a second carbon brush, the first carbon brush is arranged in the first brush holder, the second carbon brush is arranged in the second brush holder, and the moving directions of the first carbon brush and the second carbon brush correspond to each other; the filter inductance assembly comprises a first filter inductance assembly and a second filter inductance assembly, the first filter inductance assembly corresponds to the first brush holder, and the second filter inductance assembly corresponds to the second brush holder.

The invention has the beneficial effects that:

in the invention, the carbon brush assembly and the filter assembly are respectively arranged on two sides of the mounting plate, so that the structure of the invention is clearer and simpler, the production and the assembly are convenient, and the mutual influence of the carbon brush assembly and the filter assembly in the working process is avoided; the carbon brush connecting block is arranged, so that the carbon brush can move more firmly and stably, the carbon brush is prevented from deviating, and the current is conducted more stably; the arrangement of the capacitor limiting groove and the inductor component limiting groove enables the assembly of the filter component to be firmer and more stable, and the capacitor limiting part arranged in the capacitor limiting groove and the inductor component limiting part arranged in the inductor component limiting groove enable the assembly of the filter component to be firmer and more stable, so that the current conduction is more stable; the movable spring wraps the carbon brush, so that the movable direction of the carbon brush can be limited by the movable spring, excessive contact between the carbon brush and the brush holder is avoided, excessive pushing acting force is consumed, the contact between the carbon brush and the rotating body is more stable, and further the conduction of current is more stable.

The arrangement of the assembling buckle enables the brush holder to be assembled more firmly, and the brush holder is provided with the assembling buckle, so that other connecting pieces are omitted, the structure of the brush holder is simpler and clearer, and the assembly is convenient.

The movable spring adopts a double-eye constant force volute spring, and the double-eye constant force volute spring is matched with the positioning part of the fastener, so that acting force can be applied to the carbon brush in two directions; compared with a compression spring, the action force applied to the carbon brush by the double-eye constant-force volute spring is kept stable, and therefore the carbon brush is more stably contacted with the rotating body.

The carbon brush is more firmly and stably assembled due to the arrangement of the brush holding opening and the limiting buckle, and the carbon brush connecting block can synchronously move when the carbon brush moves due to the brush holding opening and the limiting space, so that the assembly stability of the carbon brush is further improved.

The arrangement of the limiting plate not only can facilitate the installation of the filter capacitor and the filter inductor assembly, but also can prevent the assembly pins of the filter capacitor and the filter inductor assembly from falling off from the capacitor limiting groove and the inductor assembly limiting groove; the assembly strength of the filter inductance assembly is further improved by the inductance assembly mounting seat.

Drawings

FIG. 1 is a cross-sectional view of an inflator.

Fig. 2 is a view showing a structure of a rotor.

Fig. 3 is a view showing the construction of a steering gear.

Fig. 4 is a plan view of the stator core.

Fig. 5 is a structural view of a stator core.

Fig. 6 is a view showing an assembly structure of a rotor and a piston assembly.

Fig. 7 is a structural view of the upper surface of a mounting plate in a carbon brush holder of a motor.

Fig. 8 is a top view of a motor carbon brush holder.

FIG. 9 is a view showing the structure of the lower surface of the mounting plate in the carbon brush holder of the motor.

Fig. 10 is an enlarged view of the structure of the carbon brush and the brush holder.

Fig. 11 is an enlarged view of the structure of the filter inductor assembly.

Fig. 12 is an enlarged view of the structures of the first inductance component limiting block and the second inductance component limiting block.

Fig. 13 is a view of the construction of the mounting buckle.

Fig. 14 is a view showing a structure of a movable spring.

Fig. 15 is a carbon brush connector block pattern.

Fig. 16 is an expanded view of the mounting plate and the mounting plate in embodiment 2.

Fig. 17 is a view showing a lower surface structure of the mounting plate.

Reference numbers in the figures:

1. a rotor; 2. a motor carbon brush holder; 3. a piston assembly; 4. a stator; 5. a pump housing; 6. assembling a plate; 10. a counterbalance; 11. a rotating shaft connector; 12. a diverter; 13. a rotor slot; 14. a rotating shaft; 15. a rotor core; 16. a baffle gap; 17. an iron core positioning block; 18. a rotor winding; 19. a winding baffle; 20. a main housing; 21. mounting a plate; 22. a carbon brush assembly; 23. a filtering component; 24. a carbon brush; 25. a brush holder; 26. a carbon brush connecting block; 27. a movable spring; 28. a filter capacitor; 29. a filter inductance component; 31. a piston; 32. a piston connector; 33. a piston head; 34. a piston connecting rod; 35. a piston base; 41. a magnetic strip; 42. a stator core; 43. a magnetic strip mounting part; 44. a stator space; 51. a rotor active space; 52. a piston accommodating space; 61. assembling the block; 62. assembling a plate through hole; 63. a first fitting plate; 64. a second fitting plate; 111. a connector first portion; 112. a connector second portion; 113. a third portion of the connector; 121. a rectifying tank; 122. a first rectifying region; 123. a second rectifying region; 124. rectifying blocks; 125. rectifying and bending; 126. a first rectifying section; 127. a second rectifying section; 211. a mounting plate through hole; 212. a limit buckle; 213. a limiting space; 214. a top plate; 215. a capacitor limiting groove; 216. an inductance assembly limiting groove; 217. a limiting plate; 218. an inductance assembly mounting base; 219. an assembly hole; 220. assembling buckle accommodating grooves; 241. a first carbon brush; 242. a second carbon brush; 243. assembling a buckle; 244. a carbon brush contact surface; 251. a brush holder space; 252. a brush holder opening; 253. a first brush holder; 254. a second brush holder; 255. a fastener positioning portion; 256. a brush holder gap; 261. a first connecting rod; 262. a second connecting rod; 263. a third connecting rod; 264. a fourth connecting rod; 271. a limiting part; 272. a contact portion; 281. a capacitance limiting part; 282. a first capacitance stopper; 283. a second capacitance limiting block; 291. an inductance assembly limiting part; 292. a first inductance assembly limiting block; 293. a second inductance assembly limiting block; 294. a first filter inductance component; 295. a second filter inductance component; 341. a connector fitting space; 342. a fixing pin; 431. a magnetic strip limiting block; 432. a limiting connecting block; 433. a magnetic strip limiting surface; 434. an intrados surface; 435. an outer arc surface.

Detailed Description

The invention is further described with reference to the following figures and specific examples. It should be noted that the examples are only for specifically illustrating the present invention, and the purpose thereof is to make the technical solution of the present invention better understood by those skilled in the art, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

Example 1:

as shown in fig. 7 to 15, a carbon brush holder 2 for an electric machine includes an installation plate 21, a carbon brush assembly 22 and a filter assembly 23, where the carbon brush assembly 22 and the filter assembly 23 are respectively disposed on two sides of the installation plate 21; the structure of the invention is more concise and clear, the production and the assembly are convenient, and the mutual influence of the two in the working process is avoided.

The carbon brush assembly 22 is arranged on the lower surface of the mounting plate 21 and comprises a carbon brush 24 and a brush holder 25, and the brush holder 25 is arranged on the mounting plate 21; a brush holder space 251 is provided in the brush holder 25, and a brush holder opening 252 corresponding to the brush holder space 251 is provided in the brush holder 25; the carbon brush 24 enters the brush holder space 251 through the brush holder opening 252 and moves in the brush holder space 251; the carbon brush assembly 22 comprises a carbon brush connecting block 26, one end of the carbon brush connecting block 26 is connected with the mounting plate 21, and the other end of the carbon brush connecting block 26 penetrates through the brush holder 25 and is connected with the carbon brush 24; the carbon brush connecting block 26 enables the movement of the carbon brush 24 to be firmer and more stable, avoids the carbon brush 24 from deviating and enables the current conduction to be more stable; the carbon brush assembly 22 further comprises a movable spring 27, and the movable spring 27 wraps the carbon brush 24 and is in contact with the brush holder 25; the movable spring 27 can limit the moving direction of the carbon brush 24, avoid excessive contact between the carbon brush 24 and the brush holder 25, consume excessive pushing acting force, make the contact between the carbon brush 24 and the rotating body more stable, and further make the conduction of current more stable.

The filter assembly 23 is arranged on the upper surface of the mounting plate 21 and comprises a filter capacitor 28 and a filter inductor assembly 29, a capacitor limiting groove 215 and an inductor assembly limiting groove 216 are arranged on the upper surface of the mounting plate 21, the assembly pins of the filter capacitor 28 are arranged in the capacitor limiting groove 215, and the assembly pins of the filter inductor assembly 29 are arranged in the inductor assembly limiting groove 216; a capacitor limiting part 281 is arranged in the capacitor limiting groove 215 to limit the position of the assembling pin of the filter capacitor 28, and an inductor component limiting part 291 is arranged in the inductor component limiting groove 216 to limit the position of the assembling pin of the filter inductor component 29; the arrangement of the capacitor limiting groove 215 and the inductor limiting groove 216 makes the assembly of the filter assembly 23 more stable, and the capacitor limiting portion 281 arranged in the capacitor limiting groove 215 and the inductor limiting portion 291 arranged in the inductor limiting groove 216 make the assembly of the filter assembly 23 more stable, so that the conduction of the current is more stable.

The brush holder 25 is columnar, and the brush holder opening 252 is disposed at one end of the brush holder 25; the brush holder 25 includes a fitting buckle 243; the assembling buckle 243 is arranged on the lower surface of the brush holder 25 and connected with the mounting plate 21 so as to fix the brush holder 25; the arrangement of the assembling buckle 243 ensures that the brush holder 25 is assembled more firmly, and the brush holder 25 is provided with the assembling buckle 243, so other connecting pieces are omitted, the structure of the invention is simpler and clearer, and the assembly is convenient; the brush holder 25 further includes a fastener positioning portion 255; the fastener positioning portions 255 are disposed at both sides of the brush holder 25 and at an end where the brush holder opening 252 is located, and the fastener positioning portions 255 are in contact with the movable spring 27.

In this embodiment, the fastener positioning portions 255 are located on the left and right sides of the end where the brush holder opening 252 is located; the movable spring 27 adopts a binocular constant force scroll spring, and comprises a limiting part 271 and a contact part 272; the limiting parts 271 are arranged at two ends of the contact part 272, the limiting parts 271 are in contact with the fastener positioning part 255, the contact part 272 enters the brush holder space 251, and one end of the carbon brush 24 away from the fastener positioning part 255 is wrapped; the movable spring 27 is a double-eye constant force volute spring, and the double-eye constant force volute spring is matched with the fastener positioning part 255, so that acting force can be applied to the carbon brush 24 in two directions; compared with a compression spring, the acting force of the binocular constant-force volute spring applied to the carbon brush 24 is kept stable, and therefore the carbon brush 24 is more stably contacted with the rotating body.

In this embodiment, the brush holder 25 is quadrangular, so that the brush holder 25 is more attached to the mounting plate 21, and the brush holder 25 is convenient to mount; the brush holder space 251 and the carbon brush 24 are also quadrangular, so that the carbon brush 24 is convenient to be subjected to a limiting action force applied by the brush holder space 251 when moving in the brush holder space 251; a carbon brush contact surface 244 is arranged at one end of the carbon brush 24 far away from the movable spring 27, the carbon brush contact surface 244 is an arc surface and is in contact with the rotating body, and the radian of the arc surface of the carbon brush contact surface 244 can be changed and adjusted according to the shape and the size of the rotating body; the fastener positioning portion 255 is S-shaped or C-shaped, one end of the fastener positioning portion 255 is connected to the side surface of the brush holder 25, and the opening direction of the fastener positioning portion 255 on the side surface close to the brush holder opening 252 corresponds to the direction of the brush holder opening 252, and the limiting portion 271 of the binocular constant force volute spring is disposed in the opening of the fastener positioning portion 255 corresponding to the direction of the brush holder opening 252, so as to facilitate the installation of the binocular constant force volute spring and the matching of the binocular constant force volute spring and the carbon brush 24.

In the embodiment, the mounting plate 21 is provided with a mounting plate through hole 211 in the middle for the rotor 1 to pass through; the carbon brush assembly 22 includes a first brush holder 253 and a second brush holder 254, the first brush holder 253 and the second brush holder 254 correspond to each other, and a brush holder opening 252 of the first brush holder 253 and a brush holder opening 252 of the second brush holder 254 are opposite; the carbon brush 24 includes a first carbon brush 241 and a second carbon brush 242, the first carbon brush 241 is disposed in the first brush holder 253, the second carbon brush 242 is disposed in the second brush holder 254, and the moving directions of the first carbon brush 241 and the second carbon brush 242 correspond to each other; the lower surfaces of the first and second brush holders 253 and 254 are provided with assembling buttons 243, the assembling buttons 243 are provided at both ends of the lower surfaces of the first and second brush holders 253 and 254, and the assembling buttons 243 pass through the mounting plate 21 to contact the upper surface of the mounting plate 21; the assembly buckle 243 is in an L shape, one end of the assembly buckle is in contact with two ends of the lower surfaces of the first brush holder 253 and the second brush holder 254, openings of the assembly buckles at the two ends of the lower surfaces of the first brush holder 253 and the second brush holder 254 correspond to each other, and the inner side surface and the outer side surface of the mounting plate 21 are both arranged in the openings of the assembly buckles, so that the assembly of the first brush holder 253 and the second brush holder 254 is firmer and more stable.

In some preferred modes, more movable springs 27 can be adopted to wrap one end of the carbon brush 24 away from the fastener positioning part 255; for example, two movable springs 27 are used, and both the two movable springs 27 are binocular constant force spiral springs, and fastener positioning portions 255 are provided on both the left and right sides and both the upper and lower sides of the end of the brush holder opening 252; the contact part 272 of one of the movable springs 27 wraps the left and right sides of one end of the carbon brush 24 away from the fastener positioning part 255, and the limiting part 271 contacts with the fastener positioning parts 255 on the left and right sides; the contact part 272 of the other movable spring 27 wraps the upper and lower sides of one end of the carbon brush 24 away from the fastener positioning part 255, and the limiting part 271 contacts with the fastener positioning parts 255 on the upper and lower sides; the two double-eye constant force volute springs are arranged in a staggered mode, so that the wrapping performance of the movable spring 27 on the carbon brush 24 is better, the acting force of the movable spring 27 can be more uniformly applied to the carbon brush 24, and the moving direction of the carbon brush 24 can be further more accurately limited; it should be noted that the present invention may also include the number of the binocular constant force spiral springs, and it should be noted that the carbon brush 24 needs to be kept under a balanced acting force; and a compression spring may be additionally provided, one end of the compression spring is connected with the inner surface of the brush holder space 251 far away from the brush holder opening 252, and the other end is connected with the staggered position of the two movable springs 27, so that the carbon brush 24 is more tightly contacted with the rotating body.

In some preferred manners, a mechanism for limiting the position, such as a combination of a slide rail and a slider, is provided on the carbon brush 24 and the inner surface of the brush holder space 251 to further limit the moving position of the carbon brush 24, so that the moving direction of the carbon brush 24 is further limited, and the movement of the carbon brush is more accurate.

The carbon brush connecting block 26 is connected with the upper surface of the carbon brush 24; a brush holder opening 256 is formed in the upper surface of the brush holder 25, and one end of the carbon brush connecting block 26 penetrates through the brush holder opening 256 to be connected with the carbon brush 24; the shape of the brush holder gap 256 corresponds to the moving range of the carbon brush 24, and when the carbon brush 24 moves in the brush holder space 251, the carbon brush connecting block 26 moves correspondingly in the brush holder gap 256; the lower surface of the mounting plate 21 is further provided with a limit buckle 212, a limit space 213 is arranged in the limit buckle 212, and the other end of the carbon brush connecting block 26 is limited in position by the limit buckle 212 and can synchronously move with the carbon brush 24 in the limit space 213 of the limit buckle 212; the assembly of the carbon brush 24 is firmer and more stable due to the arrangement of the brush holder opening 256 and the limiting buckle 212, and the carbon brush connecting block 26 can synchronously move when the carbon brush 24 moves due to the brush holder opening 256 and the limiting space 213, so that the assembly stability of the carbon brush 24 is further improved.

In this embodiment, the carbon brush connection block 26 includes a first connection rod 261, a second connection rod 262, a third connection rod 263 and a fourth connection rod 264, one end of the first connection rod 261 and one end of the third connection rod 263 are connected to two ends of the second connection rod 262, and one end of the fourth connection rod 264 is connected to one end of the third connection rod 263 far away from the second connection rod 262; the first connecting rod 261 and the third connecting rod 263 are perpendicular to the second connecting rod 262, the orientations of the first connecting rod 261 and the third connecting rod 263 are consistent, and the fourth connecting rod 264 and the third connecting rod 263 are perpendicular to each other; the first connecting rod 261, the second connecting rod 262, the third connecting rod 263 and the fourth connecting rod 264 are positioned on the same straight line; one end of the first connecting rod 261, which is far away from the second connecting rod 262, is connected with the carbon brush 24; the limiting buckle 212 is L-shaped, and one end of the limiting buckle 212 is connected with the lower surface of the mounting plate 21, so that a limiting space 213 is formed; one end of the fourth connecting rod 264 far away from the third connecting rod 263 is arranged in the limiting space 213; in some preferred manners, a top plate 214 is further disposed on the lower surface of the mounting plate 21, and the top plate 214 corresponds to the movable range of the carbon brush connecting block 26 in the limiting space 213 and contacts with one end of the carbon brush connecting block 26 close to the limiting space 213.

In the present embodiment, the opening direction of the position-limiting button 212 is the same as the opening direction of the brush holder opening 252, and the position-limiting button 212 is disposed on one side of the brush holder 25; when the first connecting rod 261 is connected, the third connecting rod 263 is located between the limit buckle 212 and the brush holder 25, and the movable range of the third connecting rod 263 is located between one end of the brush holder 25 far away from the brush holder opening 252 and the fastener positioning portion 255; when the fourth connecting rod 264 moves to the opening of the limit buckle 212, the third connecting rod 263 contacts with the buckle positioning portion 255, and further the moving position of the carbon brush connecting block 26 is limited by the buckle positioning portion 255, so that when the carbon brush 24 moves, the carbon brush connecting block 26 can move synchronously, and the assembling stability of the carbon brush 24 is further improved.

In some preferred manners, the position-limiting buckle 212 may also be replaced by a sliding rail and a sliding block, the sliding rail is disposed on the lower surface of the mounting plate 21, the sliding block is disposed on the sliding rail, and the fourth connecting rod 264 is connected to the sliding block.

In some preferred modes, a bracket which moves along with the extending direction is arranged in the brush holder space 251, the carbon brush 24 is assembled with the bracket, the end of the bracket far away from the carbon brush 24 is wrapped by the movable spring 27, and the end of the first connecting rod 261 far away from the second connecting rod 262 is connected with the bracket; the replacement of the carbon brush 24 is facilitated when it is damaged.

A limit plate 217 is arranged on the upper surface of the mounting plate 21, and the limit plate 217 is arranged along the edges of the capacitance limit groove 215 and the inductance component limit groove 216; the arrangement of the limiting plate 217 not only facilitates the installation of the filter capacitor 28 and the filter inductor assembly 29, but also prevents the assembly pins of the filter capacitor 28 and the assembly pins of the filter inductor assembly 29 from falling off from the capacitor limiting groove 215 and the inductor assembly limiting groove 216; the inductance component mounting seat 218 is arranged on the upper surface of the mounting plate 21, and the filter inductance component 29 is arranged in the inductance component mounting seat 218, so that the assembly strength of the filter inductance component 29 is further improved.

In this embodiment, the filter inductor assembly 29 is cylindrical, and the inductor assembly mounting base 218 is composed of four inductor assembly mounting blocks, and the inductor assembly mounting blocks are arranged in a rectangular shape, and the position of the filter inductor assembly 29 is defined by the inductor assembly mounting blocks; the mounting pins of the filter inductor component 29 are arranged at two ends of the filter inductor component 29 and face the same side of the filter inductor component 29 in a shape like a Chinese character 'ba'; correspondingly, the inductance component limiting groove 216 is disposed at two ends of the inductance component mounting seat 218, and faces one side of the inductance component mounting seat 218 close to the mounting plate through hole 211 in a shape of a Chinese character 'ba'; it should be noted that the shape of the inductance component mounting seat 218 and the shape of the inductance component limiting groove 216 are determined by the shape of the inductance component mounting block and the shape of the mounting pin thereof.

In this embodiment, the capacitor limiting portion 281 includes a first capacitor limiting block 282 and a second capacitor limiting block 283, and the assembly pins of the filter capacitor 28 are disposed between the first capacitor limiting block 282 and the second capacitor limiting block 283, so that the installation of the capacitor limiting portion 281 is more stable.

In this embodiment, the inductance component limiting part 291 includes a first inductance component limiting block 292 and a second inductance component limiting block 293, and the assembly pin of the filter inductance component 29 is disposed between the first inductance component limiting block 292 and the second inductance component limiting block 293; the lower terminal surface of first inductance assembly stopper 292 and second inductance assembly stopper 293 is connected with the bottom surface of inductance assembly spacing groove 216, the clearance between the lower terminal surface of first inductance assembly stopper 292 and the lower terminal surface of second inductance assembly stopper 293 is greater than the diameter of filter inductance assembly 29's assembly foot, the clearance between the up end of first inductance assembly stopper 292 and the up end of second inductance assembly stopper 293 is less than the diameter of filter inductance assembly 29's assembly foot, and first inductance assembly stopper 292 and second inductance assembly stopper 293 adopt elastic material, be convenient for filter inductance assembly 29's assembly and dismantlement, and accomplish the assembly back at filter inductance assembly 29, make its installation more firm stable.

In this embodiment, the filter inductor assembly 29 includes a first filter inductor assembly 294 and a second filter inductor assembly 295, the first filter inductor assembly 294 corresponds to the first brush holder 253, and the second filter inductor assembly 295 corresponds to the second brush holder 254, so that the current conduction of the present invention is more stable; in general, a filter capacitor 28 is disposed at the same end of the first filter inductor component 294 and the second filter inductor component 295, and is disposed between the first filter inductor component 294 and the second filter inductor component 295, so that the current of the present invention can be conducted more stably.

In this embodiment, the mounting pins of the filter capacitor 28 are disposed at two ends of the filter capacitor 28, and the mounting pins of the filter capacitor 28 face the first filter inductor component 294 and the second filter inductor component 295, respectively; the capacitor limiting groove 215 is thus in communication with the inductor element limiting groove 216 adjacent to the filter capacitor 28, which facilitates the filter capacitor 28 to stably pass the current of the present invention.

In the present embodiment, the present invention further includes a main housing 20, and the mounting plate 21 is disposed in the main housing 20.

Example 2:

as shown in fig. 16-17, in the present embodiment, a mounting plate 6 is further included, and the mounting plate 6 is detachably mounted to the lower surface of the mounting plate 21; the surface of the assembly plate 6 close to the mounting plate 21 is the upper surface, and the surface far away from the mounting plate 21 is the lower surface; a mounting block 61 is arranged on the upper surface of the mounting plate 6, a mounting hole 219 is arranged on the mounting plate 21, one end of the mounting block 61 is connected with the mounting plate 6, and the other end of the mounting block 61 penetrates through the mounting plate 21 through the mounting hole 219 to be in contact with the upper surface of the mounting plate 21; the assembling block 61 is S-shaped or C-shaped; the carbon brush assembly 22 is arranged on the assembling plate 6 and is positioned on the lower surface of the assembling plate 6; a limit buckle 212 and a top plate 214 are also provided on the lower surface of the mounting plate 6; the capacitor limiting groove 215 and the inductance component limiting groove 216 penetrate through the mounting plate 21, and the capacitor limiting part 281 and the inductance component limiting part 291 are arranged on the upper surface of the mounting plate 6; the capacitor limiting portion 281 is disposed corresponding to the capacitor limiting groove 215, the first capacitor limiting block 282 and the second capacitor limiting block 283 are disposed on the upper surface of the assembly plate 6, and the assembly pins of the filter capacitor 28 are disposed between the first capacitor limiting block 282 and the second capacitor limiting block 283; the inductance component limiting part 291 is arranged corresponding to the inductance component limiting groove 216, the assembly pins of the wave inductance component are arranged between the first inductance component limiting block 292 and the second inductance component limiting block 293, and the lower end surfaces of the first inductance component limiting block 292 and the second inductance component limiting block 293 are connected with the upper surface of the assembly plate 6; the assembling plate 6 is arranged to facilitate the assembling of the carbon brush assembly 22 and enhance the assembling stability of the filter assembly 23.

A mounting plate through hole 62 corresponding to the mounting plate through hole 211 is provided on the mounting plate 6, the brush holder 25 is fixed on the mounting plate 6 by a mounting button 243, and both the inner side surface and the outer side surface of the mounting plate 6 are provided in the opening of the mounting button 243; an assembly buckle receiving groove 220 is formed in the lower surface of the mounting plate 21, and after the assembly buckle 243 fixes the brush holder 25 to the assembly plate 6, the assembly buckle 243 is located between the assembly plate 6 and the mounting plate 21 and is located in the assembly buckle receiving groove 220.

The fitting plate 6 includes a first fitting plate 63 and a second fitting plate 64; the upper surfaces of the first and second

fitting plates

63 and 64 are provided with fitting blocks 61; the provision of the first and second

fitting plates

63 and 64 facilitates the assembly and disassembly of the fitting plate 6.

In the present embodiment, the filter capacitor 28 has two mounting pins, so that two capacitor position-limiting portions 281 are provided, and the two capacitor position-limiting portions 281 are both disposed on the upper surface of the first mounting plate 63; two assembling pins of the filter inductor assembly 29 are provided, so that two inductor assembly limiting parts 291 are provided, and the two inductor assembly limiting parts 291 are respectively located on the first assembling plate 63 and the second assembling plate 64, so that the filter inductor assembly 29 is closer to the filter capacitor 28, and the current of the invention can be conducted more stably.

Other technical solutions of the present embodiment are the same as those of embodiment 1.

Example 3:

as shown in fig. 1, the power transmission assembly of the inflator pump comprises a rotor 1, a motor carbon brush holder 2 and a piston assembly 3; one end of the rotor 1 is provided with a rotating shaft connector 11 eccentrically connected with the rotor, and the rotating shaft connector 11 enters the piston assembly 3 and is connected and assembled with the piston assembly; the other end of the rotor 1 is provided with a steering gear 12, and the steering gear 12 enters the motor carbon brush holder 2 and is connected and assembled with the motor carbon brush holder; the general shaft can only drive the workpiece to rotate, but the eccentric shaft can not only transmit rotation, but also transmit revolution, so that the eccentric shaft can transmit stronger force, the piston 31 can move more forcefully and efficiently, and the compression degree of gas can be further improved; therefore, the rotating shaft connector 11 is eccentrically connected with the rotor 1 in the inflator pump, so that the rotor 1 becomes an eccentric shaft, and the eccentric end is connected with the piston assembly 3, thereby improving the working efficiency of the piston assembly 3 to a great extent, further adopting a motor with smaller power and reducing the use cost of the inflator pump.

The inflator pump also comprises a stator 4, and a magnetic strip 41 which is vertically arranged is arranged in the stator 4; the rotor 1 is provided with a rotor groove 13 which is obliquely arranged and is used for reducing sparks generated by reversing the rotor 1 and improving the torque of the motor; the obliquely arranged rotor slots 13 can also reduce harmonic waves, thereby reducing noise and vibration; in the embodiment, the magnetic stripe 41 is a rare earth magnetic stripe 41, the rare earth permanent magnet has high magnetic energy product and high coercivity, and a strong permanent magnetic field can be established without additional energy after the rare earth permanent magnet is magnetized, so that the efficiency of the motor assembled with the rare earth permanent magnet is higher compared with a motor assembled with a common magnetic stripe 41; the rare earth magnetic stripe 41 is matched with the rotor groove 13 which is obliquely arranged, so that the power density of the motor can be improved by about 40%, and the power of the motor is further improved, so that the use cost of the inflator pump is low, and the inflator pump has high gas compression efficiency; and the rotor groove 13 is provided at a position corresponding to the position of the magnetic stripe 41, so that the rotor 1 can be more stably rotated.

The motor carbon brush holder 2 comprises an installation plate 21, a carbon brush assembly 22 and a filter assembly 23, wherein the carbon brush assembly 22 and the filter assembly 23 are respectively arranged on two sides of the installation plate 21, and an installation plate through hole 211 for the rotor 1 to pass through is formed in the installation plate 21; the carbon brush assembly 22 and the filter assembly 23 are arranged around the through hole 211 of the mounting plate, the carbon brush assembly 22 is arranged on one surface of the mounting plate 21 far away from the piston assembly 3, and the steering gear 12 penetrates through the through hole 211 of the mounting plate to be in contact with the carbon brush assembly 22; the carbon brush assembly 22 and the filter assembly 23 are respectively arranged on two sides of the mounting plate 21, so that the structure of the inflator pump is clearer and simpler, the production and the assembly are convenient, and the mutual influence of the carbon brush assembly and the filter assembly in the working process is avoided.

As shown in fig. 6, the piston assembly 3 includes a piston 31 and a piston connector 32, the piston connector 32 being connected to the piston 31 and the spindle connector 11 being connected to the piston connector 32; the piston 31 comprises a piston head 33, a piston connecting rod 34 and a piston base 35, the piston head 33 and the piston base 35 are arranged at two ends of the piston connecting rod 34, and the piston head 33, the piston connecting rod 34 and the piston base 35 adopt an integrated design; and piston 31 of integrated design cooperates with the pivot connector 11 of eccentric connection for piston assembly 3 can directly carry out work under the drive of pivot connector 11, has avoided rotor 1 to consume the energy in a large number when the effort of transmission, makes piston 31 stronger to gas compression's strength, and then makes piston assembly 3 of pump possess better work efficiency.

As shown in fig. 2 to 3, in the present embodiment, the rotor 1 includes a rotating shaft 14 and a rotor core 15 fixed to the rotating shaft 14; rotor slots 13 are distributed on the side surface of the rotor core 15, the rotor 1 further comprises rotor windings 18, and the rotor windings 18 are arranged in the rotor slots 13; both ends of the rotor slot 13 correspond to both ends of the rotor core 15; winding baffles 19 are arranged between the openings of the rotor slots 13, the rotor windings 18 in the inflator pump can be more firmly and stably arranged on the rotor 1 due to the arrangement of the winding baffles 19, and the exposure degree of the rotor windings 18 in the rotor slots 13 can be further limited due to the winding baffles 19, so that the rotor 1 can uniformly rotate; baffle gaps 16 are arranged among the winding baffles 19; the baffle gap 16 is arranged above the opening of the rotor slot 13, and the baffle gap 16 is obliquely arranged; the width of the baffle gap 16 is smaller than the width of the rotor slot 13; the rotor slots 13 are arranged obliquely; the rotating shaft connector 11 and the commutator are arranged at two ends of the rotating shaft 14; the rotating shaft 14 and the rotor core 15 are both cylindrical, so that the rotor 1 can rotate conveniently, and the rotor 1 can rotate more uniformly; the inclination angle, the opening width and the length of each rotor slot 13 are consistent, the inclination angle of each winding baffle 19 is consistent, and the opening width and the length of the baffle gap 16 are consistent; the rotor 1 rotates more uniformly; the inclination angle of the rotor slots 13 is greater than 0 ° and less than 90 °; the angle of inclination of the baffle gap 16 is greater than 0 ° and less than 90 °; in general, the inclination angle of the rotor groove 13 is preferably 6 °, and the inclination angle of the baffle gap 16 is preferably 6 °.

In some preferred modes, an iron core positioning block 17 is further arranged on the rotating shaft 14, and the iron core positioning block 17 is arranged at two ends of the rotor iron core 15 and seals two ends of the rotor slot 13; the core positioning block 17 may be used not only to define the position of the rotor core 15, but also to allow the rotor winding 18 to be more stably fitted in the rotor slot 13.

In some preferred modes, a balance weight 10 is further disposed on the rotating shaft 14, the balance weight 10 is disposed at an end of the rotating shaft 14 close to the rotating shaft connector 11, the balance weight 10 is fan-shaped, and the rotation of the rotor 1 is more balanced, stable and uniform through the balance weight 10.

The rotating shaft connector 11 comprises a first connector part 111, a second connector part 112 and a third connector part 113; one end of the first connector part 111 is connected with one end of the rotating shaft 14, the other end of the first connector part 111 is connected with one end of the second connector part 112, and the other end of the second connector part 112 is connected with one end of the third connector part 113; the diameter of the first part 111 of the connector is larger than that of the second part 112 of the connector, and the diameter of the second part 112 of the connector is larger than that of the third part 113 of the connector; the center points of the first connector part 111 and the second connector part 112 are overlapped, and the third connector part 113 is arranged on one side of the end face of the second connector part 112; in this embodiment, the end surface of the connection between the second portion 112 of the connection head and the third portion 113 of the connection head is an inclined surface, so that the connection surface between the second portion 112 of the connection head and the third portion 113 of the connection head is larger, the connection is firmer, and the strength of the rotation shaft connection head 11 is higher.

The commutator is columnar, a rectifying groove 121 is arranged on the side surface of the commutator, and the side surface of the commutator is contacted with the carbon brush 24 of the carbon brush assembly 22; the rectifying groove 121 comprises a first rectifying area 122 and a second rectifying area 123, the first rectifying area 122 is communicated with the second rectifying area 123, the second rectifying area 123 is arranged on one side of the first rectifying area 122 close to the rotor core 15, the width of the first rectifying area 122 is smaller than that of the second rectifying area 123, powder can be left in the rectifying groove 121 when the commutator is in contact with the carbon brush 24, and the first rectifying area 122 and the second rectifying area 123 are arranged to facilitate cleaning of the rectifying groove 121; a rectifying block 124 is also arranged at one end of the commutator close to the rotor core 15; the rectifying blocks 124 are arranged between the second rectifying regions 123; the rectifying block 124 is in a J shape, the rectifying block 124 comprises a rectifying bend 125, a first rectifying part 126 and a second rectifying part 127, one end of the first rectifying part 126 and one end of the second rectifying part 127 are respectively connected with two ends of the rectifying bend 125, the length of the first rectifying part 126 is smaller than that of the second rectifying part 127, and the first rectifying part 126 and the second rectifying part 127 are in the same direction; one end of the first rectifying part 126, which is far away from the rectifying bend 125, is connected with the commutator; the arrangement of the rectifying block 124 can enable the rotation of the reverser to be firmer and more stable, and the stability of the reverser 12 in operation is enhanced.

As shown in fig. 4-5, the stator 4 includes a stator core 42 and a magnetic strip 41; a stator space 44 is provided in the stator 4, and the rotor 1 is located in the stator space 44; a magnetic strip mounting part 43 is further arranged on the inner surface of the stator space 44, the magnetic strip 41 is vertically arranged in the magnetic strip mounting part 43, and the magnetic strip mounting part 43 is vertically arranged in the stator space 44; when the rotor 1 is positioned in the stator space 44, the rotor core 15 corresponds to the magnetic stripe mounting portion 43; the magnetic strip mounting part 43 comprises a magnetic strip limiting block 431 and a limiting connecting block 432, the inner surface of the magnetic strip limiting block 431 is in contact with the rotor core 15, and the limiting connecting block 432 is simultaneously connected with the outer surface of the magnetic strip limiting block 431 and the inner surface of the stator space 44; the outer surface of the magnetic strip limiting block 431 and the inner surface of the stator space 44 are provided with corresponding magnetic strip limiting surfaces 433; the magnetic strip 41 is arranged between the outer surface of the magnetic strip limiting block 431 and the inner surface of the stator space 44 and is in contact with the magnetic strip limiting surfaces 433 of the magnetic strip limiting block 431 and the stator space 44; the magnetic strip mounting part 43 is convenient for the assembly of the magnetic strip 41, and the arrangement of the magnetic strip limiting surface 433 enables the magnetic strip 41 to further improve the assembly firmness degree of the magnetic strip 41.

In this embodiment, the magnetic bar stopper 431 has an arc shape and includes at least two magnetic bar mounting portions 43; the surface, which is surrounded by the magnetic strip limiting block 431 and forms the opening, is an inner arc surface 434, the other surface of the magnetic strip limiting block 431 is an outer arc surface 435, and the inner arc surface 434 of each magnetic strip limiting block 431 faces the central point of the stator space 44; the magnetic strip limiting surface 433 is arranged on the outer arc surface 435 of the magnetic strip limiting block 431 and the inner surface of the stator space 44 and corresponds to each other, and the surface of the magnetic strip 41 is simultaneously contacted with the magnetic strip limiting surface 433 of the magnetic strip limiting block 431 and the magnetic strip limiting surface 433 of the stator space 44; the magnetic strip limiting surface 433 of the magnetic strip limiting block 431 and the magnetic strip limiting surface 433 of the stator space 44 are both planar, and the magnetic strip 41 is in a rectangular shape, so that the magnetic strip 41 and the magnetic strip limiting surface 433 are more attached; the spacing between each magnetic strip limiting block 431 is equal, so that the rotor 1 is more stable when rotating in the stator space 44; the limiting connecting block 432 is connected with the outer arc surface 435 of the magnetic stripe limiting block 431, the limiting connecting block 432 is connected with the central point of the magnetic stripe limiting block 431, and the magnetic stripe limiting surfaces 433 are arranged on two sides of the limiting connecting block 432, so that the assembly of the magnetic stripe 41 is firmer and more stable.

Generally, two magnetic strip mounting portions 43 are arranged in the stator space 44, and the openings of the two magnetic strip mounting portions 43 correspond to each other; meanwhile, four magnetic strip limiting surfaces 433 are arranged on each magnetic strip mounting part 43, and the four magnetic strip limiting surfaces 433 are uniformly arranged on two sides of the limiting connecting block 432; certainly, the number of the magnetic strip mounting parts 43 and the number of the magnetic strip limiting surfaces 433 on the two sides of the limiting connecting block 432 can be increased according to requirements so as to increase the number of the magnetic strips 41, and further improve the rotating power of the rotor 1; it should be noted that the opening radian of the magnetic stripe stopper 431 corresponds to the shape and size of the rotor core 15.

As shown in fig. 9 to 10, the carbon brush assembly 22 includes a carbon brush 24 and a brush holder 25, and the brush holder 25 is disposed on the mounting plate 21; a brush holder space 251 is provided in the brush holder 25, and a brush holder opening 252 corresponding to the brush holder space 251 is provided in the brush holder 25; the carbon brush 24 enters the brush holder space 251 through the brush holder opening 252 and moves in the brush holder space 251; the carbon brush assembly 22 comprises a carbon brush connecting block 26, one end of the carbon brush connecting block 26 is connected with the mounting plate 21, the other end of the carbon brush connecting block 26 penetrates through the brush holder 25 to be connected with the carbon brush 24, the carbon brush connecting block 26 is arranged to enable the carbon brush 24 to move more firmly and stably, the carbon brush 24 is prevented from deviating, and current conduction is enabled to be more stable; the carbon brush assembly 22 further comprises a movable spring 27, and the movable spring 27 wraps the carbon brush 24 and is in contact with the brush holder 25; the movable spring 27 can limit the moving direction of the carbon brush 24, excessive contact between the carbon brush 24 and the brush holder 25 is avoided, excessive pushing acting force is consumed, the contact between the carbon brush 24 and a steering gear is more stable, and further the conduction of current is more stable; the brush holder opening 252 is disposed at one end of the brush holder 25, and the brush holder opening 252 faces the center of the mounting plate through hole 211, so that the carbon brush 24 can be in contact with the commutator and the direction of the output current is unchanged by the commutator; the assembling button 243 is disposed on the lower surface of the brush holder 25, and is connected to the mounting plate 21, thereby fixing the brush holder 25.

As shown in fig. 13, in the present embodiment, the carbon brush assembly 22 includes a first brush holder 253 and a second brush holder 254, the first brush holder 253 and the second brush holder 254 correspond to each other, and a brush holder opening 252 of the first brush holder 253 and a brush holder opening 252 of the second brush holder 254 are opposite; the carbon brush 24 includes a first carbon brush 241 and a second carbon brush 242, the first carbon brush 241 is disposed in the first brush holder 253, the second carbon brush 242 is disposed in the second brush holder 254, and the moving directions of the first carbon brush 241 and the second carbon brush 242 correspond to each other; the lower surfaces of the first and second brush holders 253 and 254 are provided with assembling buttons 243, the assembling buttons 243 are provided at both ends of the lower surfaces of the first and second brush holders 253 and 254, and the assembling buttons 243 pass through the mounting plate 21 to contact the upper surface of the mounting plate 21; the assembly buckle 243 is in an L shape, one end of the assembly buckle is in contact with two ends of the lower surfaces of the first brush holder 253 and the second brush holder 254, openings of the assembly buckles at the two ends of the lower surfaces of the first brush holder 253 and the second brush holder 254 correspond to each other, and the inner side surface and the outer side surface of the mounting plate 21 are both arranged in the openings of the assembly buckles, so that the assembly of the first brush holder 253 and the second brush holder 254 is firmer and more stable.

As shown in fig. 14, in the present embodiment, the brush holder 25 is provided on the lower surface of the mounting plate 21, which includes a fastener positioning portion 255; the fastener positioning part 255 is arranged at two sides of the brush holder 25 and is positioned at one end of the brush holder opening 252, and the fastener positioning part 255 is contacted with the movable spring 27; the movable spring 27 adopts a binocular constant force scroll spring, and comprises a limiting part 271 and a contact part 272; the limiting parts 271 are arranged at two ends of the contact part 272, the limiting parts 271 are in contact with the fastener positioning part 255, the contact part 272 enters the brush holder space 251, and one end of the carbon brush 24 away from the fastener positioning part 255 is wrapped; the binocular constant force spiral spring is matched with the fastener positioning part 255, so that acting force can be applied to the carbon brush 24 in two directions, and compared with a compression spring, the acting force applied to the carbon brush 24 by the binocular constant force spiral spring is stable, and further the contact between the carbon brush 24 and a steering gear is more stable.

In this embodiment, the brush holder 25 is quadrangular, so that the brush holder 25 is more attached to the mounting plate 21, and the brush holder 25 is convenient to mount; the brush holder space 251 and the carbon brush 24 are also quadrangular, so that the carbon brush 24 is convenient to be subjected to a limiting action force applied by the brush holder space 251 when moving in the brush holder space 251; a carbon brush contact surface 244 is arranged at one end of the carbon brush 24 far away from the movable spring 27, the carbon brush contact surface 244 is an arc surface and is in contact with the steering gear, and the radian of the arc surface of the carbon brush contact surface 244 can be changed and adjusted according to the shape and the size of the steering gear; the fastener positioning portion 255 is S-shaped, one end of the fastener positioning portion 255 is connected to the side surface of the brush holder 25, the opening direction of the fastener positioning portion 255 on the side surface close to the brush holder opening 252 corresponds to the brush holder opening 252, and the limiting portion 271 of the binocular constant force volute spring is disposed in the opening of the fastener positioning portion 255 corresponding to the brush holder opening 252, so as to facilitate the installation of the binocular constant force volute spring and the matching of the binocular constant force volute spring and the carbon brush 24.

In some preferred modes, more movable springs 27 can be adopted to wrap one end of the carbon brush 24 away from the fastener positioning part 255; for example, two movable springs 27 are used, and both the two movable springs 27 are binocular constant force spiral springs, and fastener positioning portions 255 are provided on both the left and right sides and both the upper and lower sides of the end of the brush holder opening 252; the contact part 272 of one of the movable springs 27 wraps the left and right sides of one end of the carbon brush 24 away from the fastener positioning part 255, and the limiting part 271 contacts with the fastener positioning parts 255 on the left and right sides; the contact part 272 of the other movable spring 27 wraps the upper and lower sides of one end of the carbon brush 24 away from the fastener positioning part 255, and the limiting part 271 contacts with the fastener positioning parts 255 on the upper and lower sides; the two double-eye constant force volute springs are arranged in a staggered mode, so that the wrapping performance of the movable spring 27 on the carbon brush 24 is better, the acting force of the movable spring 27 can be more uniformly applied to the carbon brush 24, and the moving direction of the carbon brush 24 can be further more accurately limited; it should be noted that the inflator pump may further include the number of the binocular constant force volute springs, and it should be noted that the carbon brushes 24 need to be kept under the balanced acting force; and a compression spring can be additionally arranged, one end of the compression spring is connected with the inner surface of the brush holder space 251 far away from the brush holder opening 252, and the other end of the compression spring is connected with the staggered position of the two movable springs 27, so that the carbon brush 24 is in closer contact with the steering gear.

As shown in fig. 15, in the embodiment, the carbon brush connecting block 26 includes a first connecting rod 261, a second connecting rod 262, a third connecting rod 263 and a fourth connecting rod 264, one end of the first connecting rod 261 and one end of the third connecting rod 263 are connected to two ends of the second connecting rod 262, and one end of the fourth connecting rod 264 is connected to one end of the third connecting rod 263 away from the second connecting rod 262; the first connecting rod 261 and the third connecting rod 263 are perpendicular to the second connecting rod 262, the orientations of the first connecting rod 261 and the third connecting rod 263 are consistent, and the fourth connecting rod 264 and the third connecting rod 263 are perpendicular to each other; the first connecting rod 261, the second connecting rod 262, the third connecting rod 263 and the fourth connecting rod 264 are positioned on the same straight line; one end of the first connecting rod 261, which is far away from the second connecting rod 262, is connected with the carbon brush 24; the limiting buckle 212 is L-shaped, and one end of the limiting buckle 212 is connected with the lower surface of the mounting plate 21, so that a limiting space 213 is formed; one end of the fourth connecting rod 264 far away from the third connecting rod 263 is arranged in the limiting space 213; in some preferred manners, a top plate 214 is further disposed on the lower surface of the mounting plate 21, and the top plate 214 corresponds to the movable range of the carbon brush connecting block 26 in the limiting space 213 and contacts with one end of the carbon brush connecting block 26 close to the limiting space 213.

As shown in fig. 7-8, the filter component 23 is disposed on the upper surface of the mounting plate 21, and includes a filter capacitor 28 and a filter inductor component 29, a capacitor limiting groove 215 and an inductor component limiting groove 216 are disposed on the upper surface of the mounting plate 21, the mounting pin of the filter capacitor 28 is disposed in the capacitor limiting groove 215, and the mounting pin of the filter inductor component 29 is disposed in the inductor component limiting groove 216; a capacitor limiting part 281 is arranged in the capacitor limiting groove 215 to limit the position of the assembling pin of the filter capacitor 28, and an inductor component limiting part 291 is arranged in the inductor component limiting groove 216 to limit the position of the assembling pin of the filter inductor component 29; the arrangement of the capacitor limiting groove 215 and the inductor limiting groove 216 makes the assembly of the filter assembly 23 more stable, and the capacitor limiting portion 281 arranged in the capacitor limiting groove 215 and the inductor limiting portion 291 arranged in the inductor limiting groove 216 make the assembly of the filter assembly 23 more stable, so that the conduction of the current is more stable.

As shown in fig. 11, a limit plate 217 is disposed on the upper surface of the mounting plate 21, and the limit plate 217 is disposed along the edges of the capacitance limit groove 215 and the inductance component limit groove 216; the arrangement of the limiting plate 217 not only facilitates the installation of the filter capacitor 28 and the filter inductor assembly 29, but also prevents the assembly pins of the filter capacitor 28 and the assembly pins of the filter inductor assembly 29 from falling off from the capacitor limiting groove 215 and the inductor assembly limiting groove 216; an inductance component mounting seat 218 is arranged on the upper surface of the mounting plate 21, and the filter inductance component 29 is arranged in the inductance component mounting seat 218; the assembly strength of the filter inductor assembly 29 is further improved.

In this embodiment, the capacitor limiting portion 281 includes a first capacitor limiting block 282 and a second capacitor limiting block 283, and the mounting pin of the filter capacitor 28 is disposed between the first capacitor limiting block 282 and the second capacitor limiting block 283; the installation of the capacitor limiting portion 281 is more stable.

As shown in fig. 12, in this embodiment, the inductance component limiting portion 291 includes a first inductance component limiting block 292 and a second inductance component limiting block 293, and the assembly pin of the filter inductance component 29 is disposed between the first inductance component limiting block 292 and the second inductance component limiting block 293; the lower end faces of the first inductance assembly limiting block 292 and the second inductance assembly limiting block 293 are connected with the bottom face of the inductance assembly limiting groove 216, the gap between the lower end face of the first inductance assembly limiting block 292 and the lower end face of the second inductance assembly limiting block 293 is larger than the diameter of the assembly pin of the filter inductance assembly 29, the gap between the upper end face of the first inductance assembly limiting block 292 and the upper end face of the second inductance assembly limiting block 293 is smaller than the diameter of the assembly pin of the filter inductance assembly 29, and the first inductance assembly limiting block 292 and the second inductance assembly limiting block 293 are made of elastic materials; the filter inductor assembly 29 is convenient to assemble and disassemble, and the filter inductor assembly 29 is more firmly and stably installed after being assembled.

In this embodiment, the filter inductor assembly 29 includes a first filter inductor assembly 294 and a second filter inductor assembly 295, the first filter inductor assembly 294 corresponds to the first brush holder 253, and the second filter inductor assembly 295 corresponds to the second brush holder 254, so that the current conduction of the inflator is more stable; generally, a filter capacitor 28 is disposed at the same end of the first filter inductor component 294 and the second filter inductor component 295, and is disposed between the first filter inductor component 294 and the second filter inductor component 295, so that the current of the inflator pump can be conducted more stably.

In the present embodiment, a connector fitting space 341 is provided in the piston rod 34, and the piston connector 32 is provided in the connector fitting space 341; the arrangement of the piston connector 32 and the connector fitting space 341 makes the distance between the rotor 1 and the piston 31 shorter, so that the loss of the acting force can be reduced when the rotating shaft connector 11 transmits the acting force, the piston 31 of the inflator has stronger force when compressing gas, and the inflator has better working efficiency; the piston rod 34 includes a fixing pin 342, the fixing pin 342 being disposed in the connector fitting space 341 and passing one end of the piston connector 32 therethrough; the rotating shaft connector 11 passes through the piston rod 34 and is connected with the other end of the piston connector 32, and the fixing pin 342 is parallel to the rotating shaft connector 11, so that the piston assembly 3 can avoid shaking or vibration as much as possible when the rotating shaft connector 11 transmits acting force, and further the acting force of the rotor 1 can be retained to the maximum extent when transmitting acting force.

In the present embodiment, the air pump housing 5 is further included, and a stator-rotor moving space 51 and a piston accommodating space 52 are provided in the air pump housing 5; the piston assembly 3 is arranged in the piston accommodating space 52, the rotor 1 and the motor carbon brush holder 2 are arranged in the stator and rotor moving space 51, and the motor carbon brush holder 2 is arranged at one end of the stator and rotor moving space 51 far away from the piston accommodating space 52.

In the present embodiment, the present invention further includes a main housing 20, wherein the mounting plate 21 is disposed in the main housing 20, and the main housing 20 is assembled in the stator/rotor moving space 51.

It should be noted that other technical solutions of the present invention are all the prior art, and therefore, are not described in detail.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A motor carbon brush holder is characterized by comprising an installation plate, a carbon brush assembly and a filtering assembly, wherein the carbon brush assembly and the filtering assembly are respectively arranged on two sides of the installation plate;

2. A motor carbon brush holder according to claim 1, wherein said brush holder is cylindrical, and the brush holder opening is provided at one end of the brush holder; the brush holder comprises an assembling buckle; the assembly buckle is arranged on the lower surface of the brush holder and connected with the mounting plate so as to fix the brush holder.

3. A motor carbon brush holder according to claim 1, wherein the brush holder further comprises a fastener positioning portion; the fastener positioning parts are arranged on two sides of the brush holder and located at one end where the brush holder opening is located, and the fastener positioning parts are in contact with the movable spring.

4. The carbon brush holder for the motor according to claim 3, wherein the movable spring is a double-eye constant force volute spring which comprises a limiting part and a contact part; the limiting parts are arranged at two ends of the contact part, the limiting parts are in contact with the fastener positioning parts, the contact part enters the brush holder space, and one end, far away from the fastener positioning parts, of the carbon brush is wrapped.

5. The carbon brush holder for the motor according to claim 1, wherein the carbon brush connecting block is connected to an upper surface of a carbon brush; a brush holder notch is formed in the upper surface of the brush holder, and one end of the carbon brush connecting block penetrates through the brush holder notch to be connected with the carbon brush; the shape of the brush holder gap corresponds to the moving range of the carbon brush, and when the carbon brush moves in the brush holder space, the carbon brush connecting block moves correspondingly in the brush holder gap; the lower surface of the mounting plate is also provided with a limit buckle, a limit space is arranged in the limit buckle, and the other end of the carbon brush connecting block is limited in position by the limit buckle and can synchronously move with the carbon brush in the limit space of the limit buckle.

6. An electric machine carbon brush holder according to claim 1, wherein a limiting plate is provided on the upper surface of the mounting plate, the limiting plate being provided along the edges of the capacitance limiting groove and the inductance component limiting groove.

7. A motor carbon brush holder according to claim 1, wherein an inductance component mounting seat is provided on the upper surface of the mounting plate, and the filter inductance component is provided in the inductance component mounting seat.

8. The carbon brush holder for the motor according to claim 1, wherein the capacitor limiting portion comprises a first capacitor limiting block and a second capacitor limiting block, and the assembly pins of the filter capacitor are disposed between the first capacitor limiting block and the second capacitor limiting block.

9. The carbon brush holder for the motor according to claim 1, wherein the inductance component limiting part comprises a first inductance component limiting block and a second inductance component limiting block, and the assembly pin of the filter inductance component is arranged between the first inductance component limiting block and the second inductance component limiting block; the lower end face of the first inductance component limiting block and the lower end face of the second inductance component limiting block are connected with the bottom face of the inductance component limiting groove, the gap between the lower end face of the first inductance component limiting block and the lower end face of the second inductance component limiting block is larger than the diameter of the assembly foot of the filter inductance component, the gap between the upper end face of the first inductance component limiting block and the upper end face of the second inductance component limiting block is smaller than the diameter of the assembly foot of the filter inductance component, and the first inductance component limiting block and the second inductance component limiting block are made of elastic materials.

10. The carbon brush holder for the motor as claimed in claim 1, wherein the mounting plate is provided with a mounting plate through hole in the middle for the rotor to pass through; the carbon brush assembly comprises a first brush holder and a second brush holder, the first brush holder and the second brush holder correspond to each other, and a brush holder opening of the first brush holder is opposite to a brush holder opening of the second brush holder; the carbon brushes comprise a first carbon brush and a second carbon brush, the first carbon brush is arranged in the first brush holder, the second carbon brush is arranged in the second brush holder, and the moving directions of the first carbon brush and the second carbon brush correspond to each other; the filter inductance assembly comprises a first filter inductance assembly and a second filter inductance assembly, the first filter inductance assembly corresponds to the first brush holder, and the second filter inductance assembly corresponds to the second brush holder.