CN219999116U - Stator structure of brush motor - Google Patents

Abstract

The utility model relates to the technical field of stators and discloses a stator structure of a brush motor, which comprises a motor casing, a positioning assembly arranged on the inner side wall of the motor casing and a magnetic shoe arranged in the positioning assembly, wherein the positioning assembly comprises a positioning frame arranged on the inner side wall of the motor casing and a tight supporting part arranged on the positioning frame, the positioning frame comprises a positioning ring arranged on the inner side wall of the motor casing, the magnetic shoe is arranged on the positioning ring, and the tight supporting part is used for supporting the magnetic shoe on the inner side wall of the motor casing. The utility model has the effect of improving the installation stability of the magnetic shoe.

Description

Stator structure of brush motor

Technical Field

The utility model relates to the technical field of stators, in particular to a stator structure of a brush motor.

Background

The stator is the stationary part of the motor for providing the magnetic field to the rotor. The stator and the rotor are mutually matched to realize the conversion of the electric energy and the mechanical energy of the motor.

Existing DC motor stators generally include a motor housing and magnetic shoes. The magnetic shoe is provided with a plurality of, and inside the motor casing was arranged in to a plurality of magnetic shoes to evenly distributed along motor casing axis direction circumference.

At present, when the magnetic shoe is installed inside the motor casing, the magnetic shoe is generally directly adhered to the inner side wall of the motor casing.

In view of the above-mentioned related art, the inventors consider that the magnetic shoe is mounted on the inner side wall of the motor casing by means of adhesion, and that there is a defect that the magnetic shoe is easily loosened and fallen off after the magnetic shoe is used for a long time.

Disclosure of Invention

In order to improve the installation stability of the magnetic shoe, the utility model provides a stator structure of a brush motor.

The utility model provides a brush motor stator structure, which adopts the following technical scheme:

the utility model provides a brush motor stator structure, includes the motor casing, arranges the locating component on the motor casing inside wall and arranges the inside magnetic shoe of locating component in, the locating component is including arranging in locating rack on the motor casing inside wall and the tight portion of support of arranging in on the locating rack, the locating rack is including arranging in go up the holding ring of motor casing inside wall, the magnetic shoe is arranged in on the holding ring, support tight portion be used for with the magnetic shoe supports tightly on the motor casing inside wall.

Through adopting above-mentioned technical scheme, when installing the magnetic shoe inside the motor casing, place the magnetic shoe on the holding ring to with magnetic shoe along holding ring axis direction circumference distribution, then, compress tightly the magnetic shoe on the motor casing inside wall through supporting tight portion, thereby, promoted the convenience and the steadiness of magnetic shoe installation inside the motor casing.

Optionally, support tight portion including coaxial fixed ring and the tight ring that supports that sets up, fixed ring outer lane lateral wall with the motor casing inside wall is connected, support tight ring and be located fixed ring is close to one side of holding ring, just support tight ring with fixed ring normal running fit, support tight ring outer lane lateral wall and follow support tight ring axis direction circumference and be provided with a plurality of tight pieces of support, every support tight piece and all follow support tight ring direction of rotation reduces gradually, support tight ring with be provided with the locking piece that is used for carrying out locking to the tight ring between the fixed ring.

Through adopting above-mentioned technical scheme, when needs support tight on the motor casing inside wall with the magnetic shoe, stir and support tight ring, make support tight ring and solid fixed ring take place relative rotation, because support tight piece and reduce along support tight ring rotation direction gradually, so when support tight ring rotation, support tight piece and support tightly the magnetic shoe gradually to, promoted the convenience of supporting tightly the magnetic shoe, simultaneously, support tight in-process to the magnetic shoe, reduced the magnetic shoe because the atress is too big, lead to damaged possibility.

Optionally, the locating rack is still including arranging in the locating ring is close to a plurality of displacement boards of tight portion one side is supported, a plurality of the displacement board is followed locating ring axis direction circumference distributes, and every the displacement board all with locating ring sliding fit, the magnetic shoe is arranged in the displacement board with between the motor casing inside wall, the displacement board is kept away from one side of magnetic shoe be used for with support tight piece conflict.

Through adopting above-mentioned technical scheme, when supporting tight with the magnetic shoe, support tight piece and support tight with the magnetic shoe through the displacement board, the displacement board is convenient for make the atress of magnetic shoe even, has reduced the magnetic shoe because local atress is too big, leads to the possibility of magnetic shoe damage.

Optionally, a plurality of displacement grooves have been seted up to one side that the holding ring is close to the holding ring, and a plurality of the displacement groove is followed holding ring axis direction circumference distributes, and a plurality of the length direction of displacement groove intersects in same point, every the holding ring is close to the one end of holding ring all is provided with the displacement piece, displacement piece and adjacent displacement groove sliding fit.

Through adopting above-mentioned technical scheme, when the displacement board slides on the holding ring, the displacement groove leads the displacement board through the displacement piece, and then, has promoted the stability of displacement board in the course of the work.

Optionally, an elastic block is disposed on a side of each displacement plate, which is close to the magnetic shoe.

Through adopting above-mentioned technical scheme, when the displacement board supports the magnetic shoe tightly on the motor casing inside wall, the elastic block buffers the tight power of supporting that the magnetic shoe received, has reduced the possibility of damaging the magnetic shoe in the tight in-process of supporting the magnetic shoe.

Optionally, the fixed ring side has seted up curved tight groove that supports, support tight groove for logical groove, support tight ring and be close to one side of fixed ring is provided with and supports tight pole, support tight pole and wear to establish support tight groove.

Through adopting above-mentioned technical scheme, when needs make to support tight ring rotation, the staff is through supporting tight pole at supporting tight inslot portion slip, makes to support tight ring and solid fixed ring and carries out relative rotation to, promoted to support tight ring pivoted convenience. Simultaneously, support tight groove and lead and spacing to support tight ring through supporting tight pole, promoted the stability of supporting tight ring in the rotation in-process.

Optionally, the locking piece comprises a locking nut arranged on the abutting rod, and the abutting rod is in threaded connection with the locking nut.

Through adopting above-mentioned technical scheme, when needs carry out the locking to solid fixed ring and support the tight ring, screw up locking nut, make to support tight ring and compress tightly on solid fixed ring to, promoted the reliability that gu fixed ring and support tight ring connect.

Optionally, a plurality of locking grooves have been seted up to the position that the solid fixed ring is close to support tight groove, a plurality of the locking groove is followed support tight groove length direction and distribute, the locking piece still including arranging in gu lock a locking section of thick bamboo between the solid fixed ring with locking nut, locking section of thick bamboo slip cap is established support tight pole periphery, be provided with the locking piece on the locking section of thick bamboo lateral wall, the locking piece with locking groove grafting cooperation.

Through adopting above-mentioned technical scheme, when locking fixed ring and support the lock ring, insert the locking piece on the locking section of thick bamboo lateral wall inside the locking groove after, compress tightly the locking section of thick bamboo on the fixed ring through the locking nut. At this time, the locking groove limits the abutting rod through the locking piece, so that the connection reliability of the fixing ring and the abutting ring is further improved.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when installing the magnetic shoe inside the motor casing, place the magnetic shoe on the holding ring to with magnetic shoe along holding ring axis direction circumference distribution, then, compress tightly the magnetic shoe on the motor casing inside wall through supporting tight portion, thereby, promoted the convenience and the steadiness of magnetic shoe installation inside the motor casing.

2. When needs support tight on the motor casing inside wall with the magnetic shoe, stir and support tight ring, make support tight ring and solid fixed ring take place relative rotation, because support tight piece and reduce along support tight ring rotation direction gradually, so when support tight ring rotation, support tight piece and support tightly the magnetic shoe gradually to, promoted the convenience of supporting tightly the magnetic shoe, simultaneously, support tight in-process to the magnetic shoe, reduced the magnetic shoe because the atress is too big, lead to the possibility of damage.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a top view of an embodiment of the present utility model.

Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.

Fig. 4 is a schematic view showing a structure of a positioning frame according to an embodiment of the present utility model.

Fig. 5 is a schematic view showing the structure of the abutting portion in the embodiment of the present utility model.

FIG. 6 is a schematic view of a construction of a retaining ring according to an embodiment of the present utility model.

Fig. 7 is an enlarged schematic view of the portion a in fig. 5.

Reference numerals illustrate:

1. a motor housing; 2. a positioning assembly; 21. a positioning frame; 211. a positioning ring; 2111. a displacement groove; 212. a displacement plate; 2121. a displacement block; 213. an elastic block; 22. a pressing part; 221. a fixing ring; 2211. a tightening groove; 2212. a locking groove; 222. a tightening ring; 2221. a tightening block; 2222. a displacement cylinder; 2223. a tightening rod; 2224. placing a ring; 223. a locking member; 2231. a locking nut; 2232. a locking cylinder; 2233. a locking piece; 3. magnetic shoe.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-7.

The embodiment of the utility model discloses a stator structure of a brush motor.

Referring to fig. 1, 2 and 3, a brushed motor stator structure includes a motor housing 1, a positioning assembly 2 and a magnetic shoe 3. The positioning assembly 2 includes a positioning frame 21 and a tightening portion 22. The locating rack 21 is installed on the inside wall of motor casing 1, and magnetic shoe 3 is installed between locating rack 21 and the inside wall of motor casing 1, and tight portion 22 is installed in the position that motor casing 1 inside wall is close to locating rack 21, and tight portion 22 is used for supporting magnetic shoe 3 tightly on motor casing 1 inside wall.

Referring to fig. 1, 2 and 3, when the magnetic shoe 3 is required to be mounted on the inner side wall of the motor casing 1, the magnetic shoe 3 is placed on the positioning frame 21, and after the magnetic shoe 3 is circumferentially distributed along the axial direction of the motor casing 1, the magnetic shoe 3 is abutted against the inner side wall of the motor casing 1 through the abutting part 22, so that the working stability of the magnetic shoe 3 is improved.

Referring to fig. 3 and 4, the positioning frame 21 includes a positioning ring 211 and a displacement plate 212. The axis of the positioning ring 211 is coincident with the axis of the motor casing 1, and the outer ring side wall of the positioning ring 211 is connected with the motor casing 1 through bolts. A plurality of displacement grooves 2111 are formed in one side, close to the displacement plate 212, of the positioning ring 211, each displacement groove 2111 is in a dovetail groove, the plurality of displacement grooves 2111 are uniformly distributed circumferentially along the axis direction of the positioning ring 211, the length directions of the plurality of displacement grooves 2111 intersect at the same point on the axis of the positioning ring 211, and each displacement groove 2111 penetrates through the inner ring side wall of the positioning ring 211.

Referring to fig. 3 and 4, the displacement plates 212 are provided with a plurality of displacement plates 212, the plurality of displacement plates 212 are all located on the same side of the positioning ring 211, the plurality of displacement plates 212 are in one-to-one correspondence with the plurality of displacement grooves 2111, the middle position of one end of the displacement plate 212, which is close to the positioning ring 211, is welded with a displacement block 2121, the displacement blocks 2121 are all dovetail blocks, and the displacement block 2121 and the displacement grooves 2111 are in sliding fit. Each displacement block 2121 is adhered with an elastic block 213 on one side close to the inner side wall of the motor casing 1, the elastic block 213 is used for abutting against the magnetic shoe 3, and a placement area is formed among the positioning ring 211, the displacement plate 212 and the motor casing 1.

Referring to fig. 4, 5 and 6, the abutting portion 22 includes a fixing ring 221 and an abutting ring 222. The axis of the fixing ring 221 and the axis of the positioning ring 211 coincide, and the fixing ring 221 is located on the side of the positioning ring 211 near the displacement plate 212.

Referring to fig. 3 and 4, the outer circumferential side wall of the fixing ring 221 is connected to the inner side wall of the motor case 1 by bolts, and one side of the fixing ring 221 adjacent to the displacement plate 212 abuts against the end of the displacement plate 212.

Referring to fig. 4, 5 and 7, a tightening groove 2211 is formed in a side of the fixing ring 221 away from the displacement plate 212, the tightening groove 2211 is a through groove, the tightening groove 2211 is arranged in an arc center, and the arc center of the tightening groove 2211 is located on the axis of the fixing ring 221. The side of the fixing ring 221 away from the displacement plate 212 is provided with a plurality of groups of locking grooves 2212, the plurality of groups of locking grooves 2212 are uniformly distributed along the length direction of the abutting groove 2211, each group of locking grooves 2212 comprises two locking grooves 2212, and the two locking grooves 2212 are positioned on two sides of the length direction of the abutting groove 2211.

Referring to fig. 5, 6 and 7, the abutment ring 222 is located on one side of the fixing ring 221 adjacent to the locking groove 2212, and the axis of the fixing ring 221 and the axis of the abutment ring 222 coincide. The outer ring side wall of the fixed ring 221 is integrally formed with a plurality of abutting blocks 2221, the abutting blocks 2221 and the displacement plates 212 are in one-to-one correspondence, and each abutting block 2221 is gradually smaller along the rotation direction of the fixed ring 221.

Referring to fig. 4 and 6, a displacement cylinder 2222 is coaxially welded to one side of the fixed ring 221, which is close to the displacement plate 212, and one end of the displacement cylinder 2222, which is close to the fixed ring 221, is integrally formed with the outer ring edge of the fixed ring 221, and the outer ring side wall of the displacement cylinder 2222 abuts against the displacement plate 212.

Referring to fig. 5, 6 and 7, a placing ring 2224 is welded to a side of the tightening ring 222, which is close to the fixing ring 221, and a side of the placing ring 2224, which is far from the tightening ring 222, collides with the fixing ring 221. The tight pole 2223 is provided with to tight pole 2223 in the one side that is close to solid fixed ring 221 to tight pole 222, and the length direction of tight pole 2223 is unanimous with tight pole 222 axis direction, and tight pole 2223's one end and tight pole 222 welding are tight pole 2223's the other end wears to establish tight groove 2211.

Referring to fig. 5, 6 and 7, an end of the abutment bar 2223 remote from the abutment ring 222 is provided with a locking piece 223, and the locking piece 223 includes a locking nut 2231 and a locking cylinder 2232. The locking cylinder 2232 is slidably sleeved on the outer periphery of the abutting rod 2223, and the locking cylinder 2232 abuts against one side of the fixing ring 221 away from the abutting ring 222. The outer periphery of the locking cylinder 2232 is welded with two opposite locking pieces 2233, the two locking pieces 2233 correspond to each group of locking grooves 2212, and the locking pieces 2233 are in plug-in fit with the corresponding locking grooves 2212. The lock nut 2231 is located on a side of the lock cylinder 2232 remote from the fixing ring 221, and the lock nut 2231 is threadedly coupled with the abutment bar 2223.

The implementation principle of the stator structure of the brush motor provided by the embodiment of the utility model is as follows: when the magnetic shoe 3 is installed, the magnetic shoe 3 is placed inside the placement area. Then, the worker makes the tightening rod 2223 slide in the tightening groove 2211, and drives the tightening ring 222 to rotate through the tightening rod 2223, so that the displacement cylinder 2222 pushes the displacement plate 212 to move towards the direction close to the magnetic shoe 3, and the elastic block 213 compresses the magnetic shoe 3 on the inner side wall of the motor casing 1. Then, the locking piece 2233 is inserted into the locking groove 2212, and the locking cylinder 2232 is pressed on the fixing ring 221 by rotating the locking nut 2231, so that the installation of the magnetic shoe 3 is completed, and the working stability of the magnetic shoe 3 is realized.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. A brush motor stator structure which characterized in that: including motor casing (1), locate module (2) on motor casing (1) inside wall and place in inside magnetic shoe (3) of locate module (2), locate module (2) including placing in locating rack (21) on motor casing (1) inside wall and place in tight portion (22) of support on locating rack (21), locating rack (21) including placing in go up holding ring (211) on motor casing (1) inside wall, magnetic shoe (3) are placed in on holding ring (211), tight portion (22) are used for with magnetic shoe (3) support tightly on motor casing (1) inside wall.

2. A brushed motor stator structure according to claim 1, wherein: the tight portion (22) is supported includes fixed ring (221) and tight ring (222) that support of coaxial setting, fixed ring (221) outer lane lateral wall with motor casing (1) inside wall is connected, tight ring (222) are located fixed ring (221) are close to one side of holding ring (211), just tight ring (222) with fixed ring (221) normal running fit, tight ring (222) outer lane lateral wall is followed tight ring (222) axis direction circumference is provided with a plurality of tight piece (2221) of support, every tight piece (2221) all are followed tight ring (222) direction of rotation reduces gradually, tight ring (222) with be provided with between fixed ring (221) and be used for carrying out locking piece (223) of locking tight ring (222).

3. A brushed motor stator structure according to claim 2, wherein: the locating rack (21) is still including arranging in locating ring (211) is close to a plurality of displacement boards (212) of tight portion (22) one side are supported, a plurality of displacement boards (212) are followed locating ring (211) axis direction circumference distributes, and every displacement board (212) all with locating ring (211) sliding fit, magnetic shoe (3) are arranged in displacement board (212) with between motor casing (1) inside wall, displacement board (212) are kept away from one side of magnetic shoe (3) be used for with support tight piece (2221) conflict.

4. A brushed motor stator structure according to claim 3, wherein: a plurality of displacement grooves (2111) are formed in one side, close to the displacement plate (212), of the positioning ring (211), the displacement grooves (2111) are circumferentially distributed along the axial direction of the positioning ring (211), the length directions of the displacement grooves (2111) are intersected at the same point, a displacement block (2121) is arranged at one end, close to the positioning ring (211), of each displacement plate (212), and the displacement block (2121) is in sliding fit with the adjacent displacement groove (2111).

5. A brushed motor stator structure according to claim 3, wherein: and an elastic block (213) is arranged on one side of each displacement plate (212) close to the magnetic shoe (3).

6. A brushed motor stator structure according to claim 2, wherein: the side of the fixed ring (221) is provided with an arc-shaped propping groove (2211), the propping groove (2211) is a through groove, one side, close to the fixed ring (221), of the propping ring (222) is provided with a propping rod (2223), and the propping rod (2223) penetrates through the propping groove (2211).

7. A brushed motor stator structure as in claim 6 wherein: the locking piece (223) comprises a locking nut (2231) arranged on the abutting rod (2223), and the abutting rod (2223) is in threaded connection with the locking nut (2231).

8. A brushed motor stator structure as in claim 7 wherein: the fixed ring (221) is close to the position of supporting tight groove (2211) and is offered a plurality of locking groove (2212), a plurality of locking groove (2212) are followed support tight groove (2211) length direction and distribute, locking piece (223) still including arranging in locking section of thick bamboo (2232) between fixed ring (221) with locking nut (2231), locking section of thick bamboo (2232) slip cap is established support tight pole (2223) periphery, be provided with locking piece (2233) on locking section of thick bamboo (2232) lateral wall, locking piece (2233) with locking groove (2212) grafting cooperation.