CN214154220U - Carbon brush holder for automatic compensation carbon brush of direct current motor - Google Patents
Carbon brush holder for automatic compensation carbon brush of direct current motor Download PDFInfo
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- CN214154220U CN214154220U CN202023173997.0U CN202023173997U CN214154220U CN 214154220 U CN214154220 U CN 214154220U CN 202023173997 U CN202023173997 U CN 202023173997U CN 214154220 U CN214154220 U CN 214154220U
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Abstract
The utility model provides a carbon brush holder for automatic compensation carbon brush of DC motor, which comprises a base, a carbon brush, a plurality of carbon brush boxes and a compensation device, wherein the carbon brush boxes are internally provided with a baffle plate which divides the carbon brush boxes into a first cavity and a second cavity; the carbon brushes are arranged in the carbon brush box and comprise a first carbon brush and a second carbon brush, the first carbon brush is arranged in the first cavity, one end, far away from the circle center of the base, of the first carbon brush is connected with a push plate, and the other end of the push plate is connected with the first cavity through a spring; the second carbon brush is arranged in the second cavity, one end, far away from the circle center of the base, of the second carbon brush is connected with a spring, and the other end of the spring is connected with the second cavity; the baffle is provided with a through hole, one end of the compensation device is arranged in the second cavity and penetrates through the spring of the second carbon brush, and the other end of the compensation device penetrates through the through hole. Through setting up compensation arrangement, when first carbon brush wearing and tearing to the spring no longer extend, the push pedal of first carbon brush triggers compensation arrangement for the second carbon brush spring normally extends, realizes the new carbon brush of automatic compensation.
Description
Technical Field
The utility model relates to a direct current motor field especially relates to a carbon brush holder that is used for direct current motor's automatic compensation carbon brush.
Background
The carbon brush is a device for transmitting energy or signals between a fixed part and a rotating part of a direct current motor, generally made of pure carbon and a coagulant, and when the motor rotates, the carbon brush is contacted with a rotating commutator to transmit electric energy to a coil through the commutator. The carbon brush is a quick-wear part in the direct current motor, and the motor is operated under certain adverse conditions, so that the carbon brush is worn too fast, cannot be expected periodically, and cannot be replaced in time to damage the motor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the carbon brush holder for the automatic compensation carbon brush of the direct current motor can automatically compensate the new carbon brush after the normal carbon brush is abraded, and the normal operation of the motor is guaranteed.
In order to solve the technical problem, the utility model discloses a technical scheme be: a carbon brush holder for an automatic compensation carbon brush of a direct current motor comprises a base, a carbon brush, a plurality of carbon brush boxes and a compensation device, wherein the base is annular, the carbon brush boxes are arranged along the annular direction of the base and provided with openings towards the circle center of the base, partition plates are arranged in the openings, and the carbon brush boxes are divided into a first cavity and a second cavity by the partition plates; the carbon brushes are arranged in the opening of the carbon brush box and comprise a first carbon brush and a second carbon brush, the first carbon brush is arranged in the first cavity, one end of the first carbon brush, which is far away from the circle center of the base, is connected with a push plate, and the other end of the push plate is connected with the first cavity through a spring; the second carbon brush is arranged in the second cavity, one end, far away from the circle center of the base, of the second carbon brush is connected with a spring, and the other end of the spring is connected with the second cavity; the baffle is provided with a through hole, one end of the compensation device is arranged in the second cavity and penetrates through the spring of the second carbon brush, and the other end of the compensation device penetrates through the through hole.
Further, the compensation device is an elastic sheet, the elastic sheet is rectangular, a round hole is formed in the middle of the elastic sheet, the size of the round hole is consistent with that of a spring of the second carbon brush, two protrusions are arranged at the lower end of the elastic sheet in an extending mode, and the protrusions extend into the through holes of the partition board after the elastic sheet is bent.
Furthermore, the convex tail end of the elastic sheet is provided with a bending part, a groove is formed in the partition plate through hole, and the edge of the bending part extends into the groove.
Furthermore, a through groove is formed in the second cavity and is communicated with the second cavity and the outside, and the upper end of the elastic piece is arranged in the through groove.
Furthermore, the position of the through hole corresponds to the position of the push plate when the spring of the first carbon brush does not extend any more.
The beneficial effects of the utility model reside in that: by arranging the compensation device, when the first carbon brush is worn to the extent that the spring does not extend any more, the push plate of the first carbon brush triggers the compensation device, so that the compensation device is far away from the spring of the second carbon brush, the spring of the second carbon brush extends normally to replace the first carbon brush to operate, automatic compensation of a new carbon brush is realized, and normal operation of a motor is ensured; at the same time, the service life of the new carbon brush is long enough for the user to perform next overhaul.
Drawings
Fig. 1 is a schematic structural diagram of a carbon brush holder of an automatic compensation carbon brush for a dc motor according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a carbon brush box of a carbon brush holder for an automatic compensation carbon brush of a dc motor according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an elastic sheet of a carbon brush holder for an automatic compensation carbon brush of a dc motor according to a first embodiment of the present invention.
Description of reference numerals:
1. a base; 2. a carbon brush; 3. an elastic sheet; 4. a first carbon brush; 5. a second carbon brush; 6. pushing the plate; 7. a spring; 8. a carbon brush box; 9. a first chamber; 10. a second chamber; 11. a partition plate; 12. a through hole; 13. and (4) bulging.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 3, a carbon brush holder for an automatic compensation carbon brush of a dc motor includes a base 1, a carbon brush 2, a plurality of carbon brush boxes 8 and a compensation device, where the base 1 is annular, the carbon brush boxes 8 are arranged circumferentially along the base 1 and have an opening facing the center of the base 1, a partition plate 11 is arranged in the opening, and the partition plate 11 divides the carbon brush boxes 8 into a first chamber 9 and a second chamber 10; the carbon brush 2 is arranged in an opening of a carbon brush box 8, the carbon brush 2 comprises a first carbon brush 4 and a second carbon brush 5, the first carbon brush 4 is arranged in a first cavity 9, one end, far away from the circle center of the base 1, of the first carbon brush 4 is connected with a push plate 6, and the other end of the push plate 6 is connected with the first cavity 9 through a spring 7; the second carbon brush 5 is arranged in the second cavity 10, one end, far away from the circle center of the base 1, of the second carbon brush 5 is connected with a spring 7, and the other end of the spring 7 is connected with the second cavity 10; the partition plate 11 is provided with a through hole 12, one end of the compensation device is arranged in the second chamber 10 and penetrates through the spring 7 of the second carbon brush 5, and the other end of the compensation device penetrates through the through hole 12.
The utility model discloses a theory of operation does: after the first carbon brush 4 and the second carbon brush 5 are arranged in the first cavity 9 and the second cavity 10 of the carbon brush box 8, the rotor assembly penetrates through the base 1 to press the first carbon brush 4 and the second carbon brush 5 into the first cavity 9 and the second cavity 10, the springs 7 of the first carbon brush 4 and the second carbon brush 5 are pressed tightly, at the moment, the compensating device penetrates through the spring 7 of the second carbon brush 5, one end of the compensating device extends into the through hole 12 of the partition plate 11 to be fixed, and the spring 7 of the second carbon brush 5 cannot deform due to being blocked in the pressing state to keep the pressing state; when the first carbon brush 4 is gradually worn in the using process, the spring 7 of the first carbon brush 4 slowly pushes the push plate 6 and the first carbon brush 4 to abut against the rotor assembly, when the push plate 6 reaches the through hole 12 of the partition plate 11, the push plate 6 pushes one end of the compensating device out of the through hole 12, so that the compensating device is not fixed, and the spring 7 of the second carbon brush 5 normally extends to replace the worn first carbon brush 4 to work.
From the above description, the beneficial effects of the present invention are: by arranging the compensation device, when the first carbon brush 4 is worn to the extent that the spring 7 does not extend any more, the push plate 6 of the first carbon brush 4 triggers the compensation device, so that the compensation device is far away from the spring 7 of the second carbon brush 5, and the spring 7 of the second carbon brush 5 extends normally to replace the first carbon brush 4 to operate, thereby realizing automatic compensation of the new carbon brush 2 and ensuring normal operation of the motor; at the same time, the service life of the new carbon brush 2 is long enough for the user to perform the next service.
Further, the compensation device is an elastic sheet 3, the elastic sheet 3 is rectangular, a round hole is formed in the middle of the elastic sheet 3, the size of the round hole is consistent with that of a spring 7 of the second carbon brush 5, two protrusions 13 are arranged at the lower end of the elastic sheet 3 in an extending mode, and the protrusions 13 extend into through holes 12 of the partition board 11 after the elastic sheet 3 is bent.
As can be seen from the above description, the spring 7 of the second carbon brush 5 is blocked by the bending deformation of the elastic sheet 3, so that the circular hole in the middle of the elastic sheet 3 is smaller; two protrusions 13 at the lower end of the elastic sheet 3 extend into the through holes 12 of the partition 11 after the elastic sheet 3 is bent, so that the elastic sheet 3 is ensured to be fixed.
Further, the tail end of the protrusion 13 of the elastic sheet 3 is provided with a bending part, the inside of the through hole 12 of the partition board 11 is provided with a groove, and the edge of the bending part extends into the groove.
As can be seen from the above description, the inner wall of the through hole 12 of the partition 11 is provided with a groove, and the bent portion of the protrusion 13 of the elastic piece 3 extends into the groove, so as to further ensure the fixation of the elastic piece 3.
Further, a through groove is formed in the second cavity 10, the through groove is communicated with the second cavity 10 and the outside, and the upper end of the elastic piece 3 is arranged in the through groove.
As can be seen from the above description, a through groove is provided for fixing the upper end of the elastic sheet 3; when installing flexure strip 3 simultaneously, only need to make its protrusion 13 stretch into the through-hole 12 of baffle 11 after bending the flexure strip 3 and stretching into logical groove, easy operation is convenient.
Further, the position of the through hole 12 corresponds to the position of the push plate 6 when the spring 7 of the first carbon brush 4 is not extended any more.
As can be seen from the above description, when the spring 7 of the first carbon brush 4 is not extended any more, the first carbon brush 4 cannot be used any more for a predetermined length of the carbon brush 2, and the position of the push plate 6 at this time corresponds to the position of the through hole 12, so that the second carbon brush 5 can immediately take over the first carbon brush 4 to operate.
Referring to fig. 1 to 3, a first embodiment of the present invention is:
the carbon brush holder for the automatic compensation carbon brush of the direct current motor comprises a base 1, a carbon brush 2, a plurality of carbon brush boxes 8 and a compensation device, wherein the base 1 is annular, the carbon brush boxes 8 are annularly arranged along the base 1 and provided with openings towards the circle center of the base 1, partition plates 11 are arranged in the openings, and the partition plates 11 divide the carbon brush boxes 8 into a first cavity 9 and a second cavity 10; the carbon brush 2 is arranged in an opening of a carbon brush box 8, the carbon brush 2 comprises a first carbon brush 4 and a second carbon brush 5, the first carbon brush 4 is arranged in a first cavity 9, one end, far away from the circle center of the base 1, of the first carbon brush 4 is connected with a push plate 6, and the other end of the push plate 6 is connected with the first cavity 9 through a spring 7; the second carbon brush 5 is arranged in the second cavity 10, one end, far away from the circle center of the base 1, of the second carbon brush 5 is connected with a spring 7, and the other end of the spring 7 is connected with the second cavity 10; the partition plate 11 is provided with a through hole 12, one end of the compensation device is arranged in the second chamber 10 and penetrates through the spring 7 of the second carbon brush 5, and the other end of the compensation device penetrates through the through hole 12.
The compensation device is an elastic sheet 3, the elastic sheet 3 is rectangular, a round hole is formed in the middle of the elastic sheet 3, the size of the round hole is consistent with that of a spring 7 of the second carbon brush 5, two protrusions 13 are arranged at the lower end of the elastic sheet 3 in an extending mode, and the protrusions 13 extend into through holes 12 of the partition board 11 after the elastic sheet 3 is bent.
The tail end of the protrusion 13 of the elastic sheet 3 is provided with a bending part, the inside of the through hole 12 of the partition board 11 is provided with a groove, and the edge of the bending part extends into the groove. Specifically, the groove is triangular and has an inclined surface with one side inclined toward the second chamber 10, and the inclined surface can guide the bent portion to extend into the groove from top to bottom and to leave the groove when pushed by the push plate 6 in the first chamber 9. The groove faces the spring 7 of the second carbon brush 5, and the return force of the spring 7 of the second carbon brush 5 pushes the elastic sheet 3, so that the bent part of the protrusion 13 of the elastic sheet 3 is matched with the groove more tightly. Meanwhile, when the edge of the bending part protruding 13 of the elastic sheet 3 extends into the groove, a part of the bending part extends into the first cavity 9, and when the push plate 6 pushes through the through hole 12 of the partition plate 11, the push plate 6 laterally extrudes the bending part, so that the bending part and the edge of the through hole 12 are deformed and tilted, and then the edge of the bending part is separated from the groove.
A through groove is formed in the second cavity 10 and is communicated with the second cavity 10 and the outside, and the upper end of the elastic sheet 3 is arranged in the through groove.
The position of the through hole 12 corresponds to the position of the push plate 6 when the spring 7 of the first carbon brush 4 is not extended any more. To sum up, the carbon brush holder for the automatic compensation carbon brush of the direct current motor, provided by the utility model, is provided with the compensation device, when the first carbon brush is worn to the extent that the spring is not extended any more, the push plate of the first carbon brush triggers the compensation device, so that the compensation device is far away from the spring of the second carbon brush, the spring of the second carbon brush is extended normally, the first carbon brush is replaced to operate, the automatic compensation new carbon brush is realized, and the normal operation of the motor is ensured; meanwhile, the service life of the new carbon brush is enough to continue until the user overhauls the new carbon brush for the next time; the extension of the spring of the second carbon brush is blocked by utilizing the change of the cross section when the elastic sheet is bent, and the deformation of the elastic sheet is relieved by the push plate of the first carbon brush, so that the carbon brush is simple and reliable; the groove is arranged in the groove matched with the convex bending part of the elastic sheet to ensure the fixation of the elastic sheet; the through groove of the second cavity is arranged, so that the elastic sheet can be installed more quickly while the upper end of the elastic sheet is fixed.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. A carbon brush holder for an automatic compensation carbon brush of a direct current motor is characterized by comprising a base, a carbon brush, a plurality of carbon brush boxes and a compensation device, wherein the base is annular, the carbon brush boxes are annularly arranged along the base and provided with openings towards the center of the base, partition plates are arranged in the openings, and the carbon brush boxes are divided into a first cavity and a second cavity by the partition plates; the carbon brushes are arranged in the opening of the carbon brush box and comprise a first carbon brush and a second carbon brush, the first carbon brush is arranged in the first cavity, one end of the first carbon brush, which is far away from the circle center of the base, is connected with a push plate, and the other end of the push plate is connected with the first cavity through a spring; the second carbon brush is arranged in the second cavity, one end, far away from the circle center of the base, of the second carbon brush is connected with a spring, and the other end of the spring is connected with the second cavity; the baffle is provided with a through hole, one end of the compensation device is arranged in the second cavity and penetrates through the spring of the second carbon brush, and the other end of the compensation device penetrates through the through hole.
2. The carbon brush holder for an automatic compensation carbon brush of a direct current motor according to claim 1, wherein the compensation device is an elastic sheet, the elastic sheet is rectangular, a circular hole is formed in the middle of the elastic sheet, the size of the circular hole is consistent with that of the spring of the second carbon brush, two protrusions are formed in the lower end of the elastic sheet in an extending mode, and the protrusions extend into the through holes of the partition plate after the elastic sheet is bent.
3. The carbon brush holder for an automatic compensation carbon brush of a direct current motor according to claim 2, wherein the protruding end of the elastic piece is provided with a bent portion, a groove is provided inside the through hole of the partition plate, and an edge of the bent portion extends into the groove.
4. The carbon brush holder for an automatic compensation carbon brush of a direct current motor according to claim 3, wherein a through groove is formed in the second chamber, the through groove communicates the second chamber with the outside, and an upper end of the elastic piece is disposed in the through groove.
5. The carbon brush holder for an automatic compensating carbon brush of a direct current motor according to claim 1, wherein a position of the through hole corresponds to a position of the push plate when the spring of the first carbon brush is not extended any more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173997.0U CN214154220U (en) | 2020-12-25 | 2020-12-25 | Carbon brush holder for automatic compensation carbon brush of direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173997.0U CN214154220U (en) | 2020-12-25 | 2020-12-25 | Carbon brush holder for automatic compensation carbon brush of direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214154220U true CN214154220U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023173997.0U Active CN214154220U (en) | 2020-12-25 | 2020-12-25 | Carbon brush holder for automatic compensation carbon brush of direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214154220U (en) |
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2020
- 2020-12-25 CN CN202023173997.0U patent/CN214154220U/en active Active
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