CN212850158U

CN212850158U - Compact electric machine

Info

Publication number: CN212850158U
Application number: CN202021935771.7U
Authority: CN
Inventors: 吴凌云
Original assignee: Hengdian Group Innuovo Electric Co Ltd
Current assignee: Hengdian Group Innuovo Electric Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-03-30
Anticipated expiration: 2030-09-07

Abstract

The utility model relates to a motor, concretely relates to compact motor. The utility model provides a compact motor, includes the stator, the stator includes stator core, stator core comprises ring portion and a plurality of tooth portions that set up in ring portion circumference outside, be equipped with a plurality of halls on the tooth portion, be equipped with the first fixed slot that runs through tooth portion one side axial terminal surface on a plurality of tooth portions, stator core axial both sides are equipped with first insulation board and second insulation board respectively, first insulation board is the PCB board, stator core axial opening orientation first insulation board is followed to first fixed slot, hall's casing is located first fixed slot, hall's pin is connected fixedly with first insulation board, and first insulation board hides the hall that covers in the first fixed slot. The utility model has the advantages of can save axial space, make casing inner space more compact, make the motor volume can be done littleer.

Description

Compact electric machine

Technical Field

The utility model relates to a motor, concretely relates to compact motor.

Background

Install hall and connector on the stator of motor, for the installation of hall and connector, can set up the mount in stator core axial side, fix hall and connector on the mount. The casing needs to be lengthened according to the occupation space of the fixing frame, the Hall and the connector, so that the motor is large in size.

Disclosure of Invention

The utility model aims at providing a can save hall and connector occupation space, enable the casing inner space more compact, enable the littleer compact motor that the motor volume can be done.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a compact motor, includes the stator, the stator includes stator core, stator core comprises ring portion and a plurality of tooth portions that set up in ring portion circumference outside, be equipped with a plurality of halls on the tooth portion, be equipped with the first fixed slot that runs through tooth portion one side axial terminal surface on the part tooth portion, a plurality of first fixed slots are the annular interval setting that uses the stator core axis as the center, stator core axial both sides are equipped with first insulation board and second insulation board respectively, first insulation board is the PCB board, stator core axial opening orientation first insulation board is followed to first fixed slot, hall's casing is located first fixed slot, hall's pin is connected fixedly with first insulation board, and first insulation board hides the hall that covers in the first fixed slot.

The utility model discloses a set up first fixed slot on stator core to make hall can install in first fixed slot, so that casing inner structure need not need extend the casing so that the casing has the installation space of installation hall, and what enable the casing can be done is shorter, and the motor volume can be done is littleer. Wherein, first insulating plate is located first fixed slot axial side to when making hall be located first fixed slot, the pin that hall and first flange plate are connected is straight, and the pin is not crooked, so that hall is difficult for taking place the slope, so that hall's installation accuracy is higher.

Preferably, the first fixing groove penetrates through both axial end surfaces of the tooth portion, and an end surface of the hall case is attached to an end surface of the first insulating plate. The first insulation plate end face is in contact with the Hall shell end face, so that Hall positioning is achieved, Hall inclination is avoided, and Hall installation accuracy is improved.

Preferably, the first fixing groove is located at an outer end of the tooth portion, and a portion of the first insulating plate located on an axial side of the tooth portion extends outward in the circumferential direction to reach the axial side of the first fixing groove. First fixed slot and hall are located stator core's circumference outside to make hall can be more close the magnet steel in the casing, in order to improve hall response precision. The installation positions of the first fixing groove and the Hall are located on the outer side of the coil, and when the coil is wound on the stator core or embedded, the coil cannot touch the Hall to cause influence.

Preferably, the first fixing groove penetrates through the circumferential outer wall of the tooth part, and the shape and the size of the cross section of the first fixing groove are the same as those of the outer edge of the cross section of the Hall shell; the width of the first fixing groove along the radial opening of the stator core is gradually increased from outside to inside.

The first fixing groove penetrates through the circumferential outer wall of the stator core, so that the Hall is closer to the magnet in the shell. The cross section shape size of first fixed slot is the same with the shape size of hall shell cross section outer fringe, realizes hall shell's location through first fixed slot to further avoid hall's slope, in order to guarantee hall's installation accuracy. The width of the first fixing groove along the radial opening of the stator core is gradually increased from outside to inside, so that the Hall is prevented from moving to the radial outer side of the stator core, and the Hall is prevented from being separated from the first fixing groove.

As preferred, ring portion has the second fixed slot that runs through, be equipped with the linkage piece in the second fixed slot, linkage piece middle part be equipped with be used for with pivot complex third fixed slot, the linkage piece has the groove of stepping down that is used for holding the connector, first insulation board has the connecting portion that extend to linkage piece axial side, the groove of stepping down runs through the linkage piece towards the axial terminal surface of connecting portion side, the connector casing is located the inslot of stepping down, and the pin of connector is connected fixedly with the connecting portion of first insulation board. Through set up the groove of stepping down on the linkage piece to the butt joint plug-in components step down, need not set up the mount in stator core axial side, can save axial space, so that the structure is more compact in the casing, and what enable the motor volume to do is littleer.

Preferably, the axial end face of the linkage block is attached to the axial end face of the connecting portion. And positioning the axial position of the first insulating plate through the linkage block.

Preferably, one end of the linkage block, which is far away from the first insulating plate, extends to the circumferential outer side to form a limiting part, the middle part of the second insulating plate is provided with a circular groove corresponding to the linkage block, and when the linkage block is fixed with the stator core, the second insulating plate is limited between the limiting part and the stator core. The linkage block is fixed with the stator core to press from both sides the second insulation board tightly, in order to realize the fixed of second insulation board, so that the fixed location of second insulation board is more convenient.

Preferably, a plurality of abdicating grooves are formed in the linkage block, penetrate through the axial end faces on the two sides of the linkage block, and are arranged in an annular shape with the axis of the stator core as the center at uniform intervals. The abdicating groove is not only used for placing electrical elements such as connectors, but also used for reducing the weight of the stator. Wherein, the groove of stepping down runs through both ends axial terminal surface to make the wiring of connector more convenient.

Preferably, a first positioning groove is formed on an axial end surface of the linkage block close to the first insulation plate side, and the first insulation plate has a first positioning protrusion extending to the first positioning groove axial side. The first positioning groove is aligned with the first positioning protrusion to achieve alignment of the installation position of the first insulating plate, so that the first insulating plate can be installed conveniently, and alignment of the welding through hole and the Hall pin on the first insulating plate is facilitated.

Preferably, a second positioning groove and a second positioning bulge extending into the second positioning groove are formed between the circumferential outer wall of the linkage block and the circumferential inner wall of the stator core. The setting is convenient for the close fit of the linkage block and the stator core, and the positioning of the linkage block and the stator core can be realized, so that the rotation of the linkage block relative to the stator core can be avoided.

The utility model has the advantages of can save axial space, make casing inner space more compact, make the motor volume can be done littleer.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at B;

fig. 4 is another schematic structural diagram of the present invention.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

By shown in fig. 1 to 4, the utility model discloses a compact motor, which comprises a stator, the stator includes stator core 1, stator core 1 comprises ring portion and a plurality of tooth portion 12 that set up in the ring portion circumference outside, be equipped with a plurality of halls on tooth portion 12, be equipped with first fixed slot 2 on three tooth portion 12, three first fixed slot 2 is the annular interval setting that uses stator core 1 axis as the center, first fixed slot 2 runs through the both sides axial terminal surface of tooth portion 12, first fixed slot 2 is located tooth portion 12 outer end, and first fixed slot 2 runs through 12 circumference outer walls in tooth portion

Stator core 1 axial both sides are equipped with first insulation board 3 and second insulation board 4 respectively, and first insulation board 3 is the PCB board, and second insulation board 4 is conventional insulating plastic board, and the part that first insulation board 3 is located 12 axial sides of tooth extends in order to extend to 2 axial sides of first fixed slot to the outside week, and 1 axial one side opening orientation first insulation board 3 of stator core is followed to first fixed slot 2. The casing of hall (not shown in the figure) is located in first fixed slot 2, and the terminal surface of hall casing pastes with first insulating plate terminal surface. The pin of hall is connected fixedly with first insulating plate 3, and first insulating plate 3 hides the hall in first fixed slot 2. The shape and the size of the cross section of the first fixing groove 2 are the same as those of the outer edge of the cross section of the Hall shell, and the width of the first fixing groove 2 along the radial opening of the stator core 1 is gradually increased from outside to inside.

As shown in fig. 1 and 4, the ring portion has a second fixing groove, a linkage block 5 is arranged in the second fixing groove, a third fixing groove 50 for matching with the rotating shaft is arranged in the middle of the linkage block 5, the linkage block 5 has a recess 7 for accommodating the connector, the recess 7 penetrates through the axial end faces of two sides of the linkage block, the first insulation plate 3 has a connecting portion 30 extending to the axial side of the linkage block 5, a housing of the connector (not shown in the figures) is located in the recess 7, and a pin of the connector is fixedly connected with the connecting portion 30 of the first insulation plate 3. Six abdicating grooves 7 are formed in the linkage block 5, and the six abdicating grooves 7 are uniformly arranged at intervals in an annular shape with the axis of the stator core 1 as the center.

One end of the linkage block 5, which is far away from the first insulating plate 3, extends to the circumferential outer side to form a limiting part 51, the middle part of the second insulating plate 4 is provided with a circular groove 40 corresponding to the linkage block 5, when the linkage block 5 passes through the circular groove 40 to be fixed with the stator core 1, so that the second insulating plate 4 is limited between the limiting part 51 and the stator core 1, and one axial end face of the linkage block 5 is attached to the axial end face of the limiting part 30 of the first insulating plate 3.

A first positioning groove 52 is formed on an axial end face of the link block 5 on the side close to the first insulating plate 3, and the first insulating plate 3 has a first positioning projection 31 extending to the axial side of the first positioning groove 52. A second positioning groove and a second positioning bulge 10 extending into the second positioning groove are arranged between the circumferential outer wall of the linkage block 5 and the circumferential inner wall of the stator core 1. The first positioning groove 52 and the second positioning groove are the same groove and are disposed on the linkage block 5.

After finishing stator core and linkage block's tight fit, the second insulation board is pressed from both sides tightly between linkage block spacing portion and stator core, passes through glue and stator core with first insulation board afterwards and fixes, then carries out the assembly of coil on stator core, carries out the assembly of hall and connector at last. Placing the Hall in a first fixing groove, enabling the end face of a Hall shell to be attached to the end face of a first insulating plate, enabling Hall pins to penetrate through welding holes of the first insulating plate, applying force to the Hall shell, enabling the Hall shell to be attached to the first insulating plate all the time, simultaneously welding the Hall pins and the first insulating plate, finally loosening the Hall and cutting off redundant parts of the Hall pins. And the connector penetrates through the circular groove of the second insulating plate so as to be placed on the connecting part of the first insulating plate, the connector is matched with the welding hole in the connecting part, the connector is welded with the connecting part, and finally the redundant part of the pin of the connector is cut off.

Claims

1. The utility model provides a compact motor, includes the stator, the stator includes stator core, stator core comprises ring portion and a plurality of tooth portions of setting in ring portion circumference outside, its characterized in that be equipped with a plurality of halls on the tooth portion, be equipped with the first fixed slot that runs through tooth portion one side axial terminal surface on a plurality of tooth portions, a plurality of first fixed slots are the annular interval setting that uses the stator core axis as the center, stator core axial both sides are equipped with first insulation board and second insulation board respectively, first insulation board is the PCB board, stator core axial opening towards first insulation board is followed to first fixed slot, hall's casing is located first fixed slot, hall's pin is connected fixedly with first insulation board, and first insulation board hides the hall that covers in the first fixed slot.

2. The compact electric machine of claim 1 wherein the first retaining groove extends through both axial end faces of the tooth portion, the end face of the hall housing abutting the end face of the first insulator plate.

3. The compact electric machine of claim 1 or 2, wherein the first fixing groove is located at an outer end of the tooth portion, and a portion of the first insulating plate located at an axial side of the tooth portion extends to a circumferential outer side to extend to the first fixing groove axial side.

4. The compact electric machine of claim 3, wherein the first fixing groove penetrates through the outer circumferential wall of the tooth part, and the cross-sectional shape and size of the first fixing groove are the same as those of the outer edge of the cross-sectional shape and size of the Hall shell; the width of the first fixing groove along the radial opening of the stator core is gradually increased from outside to inside.

5. The compact electric motor of claim 1, wherein the ring portion has a second fixing groove extending therethrough, a linkage block is disposed in the second fixing groove, a third fixing groove for fitting with the rotation shaft is disposed in a middle portion of the linkage block, the linkage block has a recess groove for receiving the connector, the first insulating plate has a connecting portion extending to an axial side of the linkage block, the recess groove extends through an axial end surface of the linkage block toward the connecting portion side, the connector housing is disposed in the recess groove, and the pin of the connector is fixedly connected to the connecting portion of the first insulating plate.

6. The compact electric machine of claim 5 wherein the linkage block axial end faces abut the connection portion axial end faces.

7. The compact electric machine of claim 5 or 6, wherein the end of the linkage block away from the first insulating plate extends to the outer circumferential side to form a stopper, and the middle part of the second insulating plate has a circular groove corresponding to the linkage block, so that the second insulating plate is restrained between the stopper and the stator core when the linkage block is fixed with the stator core.

8. The compact electric machine of claim 5, wherein the linkage block is provided with a plurality of abdicating slots, the abdicating slots penetrate through the axial end faces of the two sides of the linkage block, and the abdicating slots are uniformly spaced in a ring shape with the axis of the stator core as the center.

9. The compact electric motor of claim 5, wherein the first positioning groove is formed on an axial end surface of the link block on a side close to the first insulating plate, and the first insulating plate has a first positioning projection extending to an axial side of the first positioning groove.

10. The compact electric machine of claim 5 wherein a second detent and a second detent projection extending into the second detent are provided between the outer circumferential wall of the linkage block and the inner circumferential wall of the stator core.