CN112117873A

CN112117873A - Motor with a stator having a stator core

Info

Publication number: CN112117873A
Application number: CN202010566844.8A
Authority: CN
Inventors: 吕易达; 赖伟铭; 陈运鸿
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 2019-06-19
Filing date: 2020-06-19
Publication date: 2020-12-22
Also published as: CN116365799A

Abstract

The invention discloses a motor, which comprises a stator and a rotor, wherein a first circuit board is also arranged in the motor. The winding group of the stator comprises a plurality of coils, the conductive elements extend out of the winding group and are connected with the electric connecting piece, and the electric connecting piece penetrates through the pillow seat of the stator and is electrically connected with the first circuit board. The motor is further provided with a second circuit board electrically connected with the first circuit board. The first electric connecting piece is used as a connecting piece for electrically connecting the winding group and the first circuit board, and the first circuit board is used for replacing a traditional wire binding disc, so that the wire binding disc has the advantage of easiness in installation.

Description

Motor with a stator having a stator core

Technical Field

The present invention relates to a motor, and more particularly, to a motor using a circuit board to replace a conventional wire-tying disk.

Background

A motor is an electric machine that generates induced magnetism by supplying electric power to coils on a stator and further operates a rotor, and how to simplify the assembly complexity of the motor is a very important issue in terms of current development.

In the stator structure of the existing motor, the assembling steps of the wire binding disc are complex and tedious, and the wire binding error is easily caused. Secondly, the coils of the wire tying disc and the winding group are easy to cause short circuit carelessly when being installed.

In general or outdoor use of the motor, moisture tends to be present at a portion where the rotor operates, and a structure for blocking moisture is required when the stator inside the rotor is electrically connected to a wire bonding disc and a circuit board.

Therefore, how to develop a motor capable of improving the existing wire tying disc is an urgent need.

Disclosure of Invention

The invention aims to provide a motor, which replaces a wire binding disc of the existing motor by a circuit board and simplifies the assembly steps and the complexity of the motor.

Another objective of the present invention is to provide a motor, wherein a through hole formed in a base of a pillow base is provided with a waterproof member, and the waterproof member is used for the first electrical connecting member to penetrate through, so that the waterproof member surrounds the first electrical connecting member to achieve waterproof and insulating effects.

To achieve the above objective, the present invention provides a motor, wherein a stator of the motor comprises a winding set and a pillow base, a coil of the winding set extends out of a wire element and is connected to a first electrical connector, and the pillow base has a shaft tube and a base. The central siphon setting is on the base, and the central siphon is located to the winding element week. The base is provided with a base inner side, and the base inner side is provided with a first through hole for the first electric connecting piece to penetrate through. The base is provided with first circuit board for the opposite side of central siphon, and first circuit board passes through first electrical connector and is connected with the winding element electricity.

The waterproof part is arranged in the first through hole, so that the influence of the moisture on the axle tube side of the pillow base on the first circuit board on the other side through the first through hole when the first electric connecting piece penetrates through the pillow base is avoided.

The first circuit board functions as a wire bonding disc of the conventional motor, and has a wire bonding structure or a printed circuit board. The first electrical connecting piece extending out of the coil can enable the winding group to be electrically connected with the first circuit board through the first electrical connecting piece only through simple alignment assembly, and the process can be simplified.

In an embodiment of the invention, the second circuit board is electrically connected to the first circuit board. The second circuit board functions as a circuit board in the conventional motor and is provided with electronic components including a driving integrated circuit.

In an embodiment of the invention, the pillow further includes a cover extending axially from the base, and the cover and the bottom plate form an accommodating space for accommodating the first circuit board and the second circuit board.

In an embodiment of the present invention, a first insulating plate is disposed between the pillow and the first circuit board.

In an embodiment of the invention, the first circuit board is provided with a clamping member for clamping the first electrical connector to electrically connect the first circuit board and the winding set.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 is a perspective view of a motor 10 according to a preferred embodiment of the present invention;

FIG. 2 is an exploded schematic view of the motor 10 of FIG. 1;

fig. 3 is a perspective view of the stator 1 of the motor 10 according to the preferred embodiment of the present invention;

fig. 4 is an exploded schematic view of the stator 1 of the motor of fig. 3;

fig. 5 is an exploded view of the stator 1 of the motor of fig. 3 from another perspective;

FIG. 6A is an exploded view of the

circuit boards

51, 52 and the

insulating plates

53, 54 of FIG. 5;

FIG. 6B is an enlarged schematic view of block A of FIG. 6A;

FIG. 6C is a schematic view of another embodiment of the clamp 510 of FIG. 6B;

fig. 7A is a perspective view of a waterproof member 4 according to a preferred embodiment of the present invention;

FIG. 7B is a perspective view of the flashing 4 of FIG. 7A from another perspective;

FIG. 8 is a cross-sectional view of the motor 10 of FIG. 1;

FIG. 9 is an enlarged schematic view of block B of FIG. 8;

FIG. 10 is a schematic partial cross-sectional view of a motor 10 in accordance with a preferred embodiment of the present invention; and

fig. 11 is a partial cross-sectional view of a motor 10 according to another preferred embodiment of the present invention.

Wherein the reference numerals

1: stator

10: motor with a stator having a stator core

2: winding set

20: coil

21. 21 a: conductive element

3: pillow base

30: shaft tube

31: base seat

310: inside of the base

3101: first through hole

3102: convex part

311: base periphery

32: cover body

321: the first space

33: heat sink

34: base plate

4: waterproof piece

41: isolation part

42: positioning part

43: extension part

51: first circuit board

510: clamping piece

511: clamping part

512: piercing part

513: clamping hole

514: through hole

515: first shaft hole

516: second electrical connector

52: second circuit board

53: first insulating plate

530: projection part

531: second shaft hole

532: guide part

54: second insulating plate

541: second space

542: side wall

543: second through hole

7: first electrical connector

8: magnetic element

9: rotor

91: rotating shaft

92: shell body

J: center shaft

Detailed Description

Some exemplary embodiments that embody features and advantages of the invention will be described in detail in the description that follows. It is to be understood that the invention is capable of modification in various respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Referring to fig. 1 and 2, fig. 1 is a perspective view of a motor 10 according to a preferred embodiment of the invention, and fig. 2 is an exploded view of the motor 10 of fig. 1. The motor 10 includes a stator 1 and a rotor 9. The stator 1 includes a winding group 2 and a pillow base 3. The rotor 9 is sleeved on the winding set 2 to rotate around the central axis J. That is, the rotor 9 is disposed circumferentially with respect to the central axis J.

In the drawings of the present invention, it is assumed that the axial direction is a direction in which the central axis J of the stator 1 extends. Directions parallel or substantially parallel to the central axis are referred to by the term "axial" and directions away from the central axis centered on the central axis are referred to simply by the term "radial". And the circumferential direction around the central axis is simply referred to as "circumferential direction".

Referring to fig. 3 to 5, fig. 3 is a perspective view of a stator 1 according to a preferred embodiment of the invention, fig. 4 is an exploded view of the stator 1 of fig. 3, and fig. 5 is an exploded view of the stator 1 of fig. 3 from another perspective. The stator 1 includes a winding group 2 and a pillow block 3. The pillow base 3 includes a shaft tube 30 and a base 31. The shaft tube 30 is located at a side where the pillow block 3 is further connected with the rotor 9 such that the winding set 2 is circumferentially disposed on the shaft tube 30. The base 31 includes a base inner side 310 adjacent the axle tube 30 and a base peripheral edge 311 circumferentially disposed on the base inner side 310. The base peripheral edge 311 is provided with a heat sink 33 on the side facing the axle tube 30, the heat sink 33 extending substantially axially with respect to the base peripheral edge 311 and radially with respect to the axle tube 30. The base inner side 310 is provided with a first perforation 3101. The flashing 4 is partially disposed in the first perforation 3101. The winding group 2 has a plurality of coils 20, each coil 20 extending out of the conductive element and connected to the first electrical connector 7, and the first electrical connector 7 passes through the waterproof member 4 and through the first through hole 3101 such that the end of the first electrical connector 7 is located on the opposite side of the base 31 from the side where the shaft tube 30 is provided. Each coil 20 in the winding set 2 may be extended with a conductive element to be directly electrically connected to the first electrical connector 7, or the coils in the same phase are electrically connected to each other and then connected to the first electrical connector 7 through the conductive element.

The pillow 3 further comprises a cover 32 on this opposite side. The cover 32 has a generally cylindrical structure extending in the axial direction, a first space 321 is formed in the cover 32, and the first circuit board 51 is disposed in the first space 321. The first circuit board 51 is provided with a clamping member 510, and the center of the first circuit board 51 is provided with a first shaft hole 515. The first electrical connector 7 extending from the coil 20 contacts the clip 510 on the first circuit board 51 after passing through the base 31 from the first through hole 3101, so that the coil 20 is electrically connected to the first circuit board 51 by the first electrical connector 7. The number of the first through holes 3101 is substantially the same as that of the first electrical connection members 7, and further, the number of the clamping members 510 is also the same as that of the first electrical connection members 7.

Generally, the entire pillow 3 is substantially of a metal structure, and a first insulating plate 53 is further disposed between the pillow 3 and the first circuit board 51. The first insulating plate 53 has a protrusion 530 disposed corresponding to the first through hole 3101, and the first insulating plate 53 has a second shaft hole 531 disposed at the center. The protrusion 530 has a through hole and is aligned with the first through hole 3101 to pass the first electrical connector 7.

Referring to fig. 4 and 5, a second circuit board 52 may be further disposed in the first space 321 formed by the cover 32, and a second insulating plate 54 is disposed between the first circuit board 51 and the second circuit board 52. The second insulating plate 54 is provided with a sidewall 542 extending axially from the periphery, in which a second space 541 is formed. The second circuit board 52 is disposed in the second space 541. The stator 1 further comprises a bottom plate 34 connected to the casing 32 such that a first space 321 is formed as a substantially closed space for accommodating the first insulating plate 53, the first circuit board 51, the second insulating plate 54 and the second circuit board 52.

In the present embodiment, the second circuit board 52 functions as a circuit board in the conventional motor, and the first circuit board 51 functions as a wire bonding coil in the conventional motor. Generally, the first circuit board 51 does not include electronic components such as a driving integrated circuit.

Fig. 6A is an exploded view of two circuit boards and two insulating boards of fig. 5. Referring to fig. 5 and fig. 6A, the first shaft hole 515 of the first circuit board 51 is axially aligned with the second shaft hole 531 of the first insulating plate 53 for the shaft (not shown) to further pass through. The second electrical connector 516 is disposed on the first circuit board 51 and passes through the second through hole 543 disposed on the second insulating plate 54, so that the first circuit board 51 and the second circuit board 52 are electrically connected through the second electrical connector 516.

In fig. 6A, the second electrical connection 516 is a metal terminal structure, but not limited thereto.

Fig. 6B is an enlarged schematic view of the block a of fig. 6A, and referring to fig. 6A and fig. 6B, the clamping member 510 disposed on the first circuit board 51 is a conductive member having a clamping portion 511 and a through portion 512. The through portion 512 is correspondingly formed through the engaging hole 513 on the first circuit board 51, so that the clamping member 510 is fixed on the first circuit board 51 and electrically connected to the first circuit board 51. The clamping portion 511 is two metal parts that can clamp the first electrical connector 7 as shown in fig. 5. The first circuit board 51 further has a through hole 514 corresponding to the clamping portion 511, and when the clamping portion 511 clamps the first electrical connector 7, the through hole 514 can selectively allow the first electrical connector 7 to pass through.

In the embodiment of fig. 6A and 6B, the clamping member 510 is disposed on a side of the first circuit board 51 close to the second insulating plate 54, i.e., a side far from the shaft tube 30, but is not limited thereto.

Please refer to fig. 6C, which is a schematic diagram of another embodiment of the clamping member 510 in fig. 6B. The clamping member 510 shown in fig. 6C is disposed on the side of the first circuit board 51 adjacent to the first insulating plate 53, i.e., the side facing the shaft tube 30. In short, the clip 510 serves as a conductive connector with the first circuit board 51, facilitating electrical connection with the first electrical connector 7.

Fig. 7A is a perspective view of a waterproof member 4 according to a preferred embodiment of the present invention, and fig. 7B is a perspective view of the waterproof member 4 of fig. 7A from another viewing angle. Referring to fig. 7A and 7B, the waterproof member 4 is a waterproof structure partially disposed in the first through hole 3101, and the first electrical connector 7 is inserted through the waterproof structure. The waterproof member 4 includes a partition 41, a positioning portion 42 and an extending portion 43, which are preferably made of rubber or plastic. When the waterproof member is provided, the extending portion 43 extends into the first through hole 3101, and the spacer portion 41 and the positioning portion 42 are located on the side of the base inner side 310 close to the shaft tube 30.

Fig. 8 is a cross-sectional view of the motor 10 shown in fig. 1. The pillow base 3 of the motor 10 is provided with a winding group 2 arranged around the circumference of the shaft tube 30. The rotor 9 includes a rotating shaft 91 and a housing 92 connected to the rotating shaft 91. The rotation shaft 91 is provided in the shaft tube 30, and the magnetic member 8 is provided at the inner side of the housing 92 to be opposite to the winding group 2. The rotor 9 is rotated by the shaft 91 along the central axis J.

Fig. 9 is an enlarged schematic view of block B of fig. 8. Referring to fig. 8 and 9, the coil 20 in the winding set 2 extends out of a first electrical connector 7, passes through a first through hole 3101 located inside the pillow block 3, and is electrically connected to the first circuit board 51 in the first space 321. In the embodiment of fig. 9, the coil 20 has an extended conductive element 21, and the conductive element 21 is electrically connected to the first electrical connector 7 and penetrates the waterproof member 4. In this embodiment, the conductive element 21 is generally a flexible wire, and is connected to the rigid metal member of the first electrical connector 7 and then passes through the waterproof member 4.

Refer to fig. 7A, 7B and 9. As mentioned above, when the waterproof member 4 is partially disposed in the first through hole 3101 as the waterproof structure, the extension portion 43 is inserted into the first through hole 3101, and the isolation portion 41 and the positioning portion 42 are disposed on the side of the base 31 close to the shaft tube 30 (i.e., close to the coil 20). The base inner side 310 is provided with a protrusion 3102 adjacent to the first perforation 3101 at a side close to the shaft tube 30 so that the positioning portion 42 of the waterproof member 4 can be engaged with the protrusion 3102 to fix the position of the waterproof member 4. After the positioning portion 42 is engaged with the convex portion 3102, the isolation portion 41 is located radially outward of the conductive element 21, and the function of insulation can be enhanced. The first insulating plate 53 between the first circuit board 51 and the base 31 has a protrusion 530 disposed corresponding to the first through hole 3101 and further extending between the base 31 and the waterproof member 4 to fix the relative position of the first electrical connector 7 and the first circuit board 51. The second insulating plate 54 serves as an insulator between the first circuit board 51 and the second circuit board 52. The first insulating plate 53 further has a guiding portion 532 facing the protruding portion of the first circuit board 51. The guide 532 is disposed corresponding to the protrusion 530 or corresponding to the first through hole 3101 of the base 31, and guides the first electrical connector 7 to be smoothly connected to the first circuit board 51 through the insulating plate 53. The first insulating plate 53 further has a guiding portion 532 facing the protruding member of the first circuit board 51. The guide 532 is disposed corresponding to the protrusion 530 or corresponding to the first perforation 3101 of the base 31. The guiding portion 532 has a curved guiding angle structure at the position adjacent to the body of the first insulating plate 53 for guiding the first electrical connector 7, so that the first electrical connector 7 can smoothly pass through the insulating plate 53 to be connected to the first circuit board 51.

Fig. 10 is a partial cross-sectional view of a motor 10 according to a preferred embodiment of the present invention. Referring to fig. 9 and 10, the conductive element 21 extending from the coil 20 is electrically connected to the first electrical connector 7, and is electrically connected to the first circuit board 51 by being clamped by the clamping member 510. The first insulating plate 53 is located between the base 31 and the first circuit board 51 and serves as an insulating protection for the electronic components on the first circuit board 51, and when the first electrical connector 7 penetrates through the base 31, the waterproof member 4 serves as a barrier between the first electrical connector and the first circuit board 51 and has an insulating function, so that the first electrical connector 7 is prevented from being electrically connected with the base 31.

Fig. 11 is a partial cross-sectional view of a motor 10 according to another preferred embodiment of the present invention. The difference from fig. 10 is that the conductive element 21a extending from the coil 20 directly passes through the waterproof member 4 to be electrically connected to the first circuit board 51, and the correspondence and functions of the other elements are the same as those in fig. 10, and are not described herein again.

In summary, the present invention provides a motor, which uses a circuit board to replace the wiring disc of the conventional motor, so as to simplify the assembly steps and complexity of the motor, and to eliminate the volume occupied by wiring the motor. In addition, a waterproof piece is arranged in the through hole of the motor pillow seat, the waterproof piece is penetrated by the electric connecting piece, and meanwhile, the waterproof and insulating effects can be achieved.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A motor, comprising:

a stator having:

the wire winding group extends out of the wire element and is connected with the first electrical connecting piece; and

the pillow seat comprises a base and an axle tube extending from one side of the base, the base is provided with a base inner side near the axle tube, and the base inner side is provided with a first through hole for the first electric connecting piece to penetrate through;

the rotor is provided with a rotating shaft, sleeved on the shaft tube and rotates along a central shaft;

the first circuit board is arranged on the base and positioned on the other side of the shaft tube, and is electrically connected with the first electrical connecting piece; and

and the second circuit board is electrically connected with the first circuit board.

2. The motor of claim 1, further comprising a waterproof member partially disposed in the first through hole for the first electrical connection member to pass through.

3. The motor of claim 2, wherein the flashing member comprises an extension extending into the first aperture such that the extension is positioned between the base and the first electrical connector.

4. The motor as claimed in claim 3, wherein the waterproof member includes a positioning portion provided on a side of the base adjacent to the shaft tube.

5. The motor as claimed in claim 4, wherein the base is provided with a protrusion adjacent to the first through hole at a side close to the shaft tube such that the positioning part is engaged with the protrusion.

6. The motor of claim 3, wherein a first insulation plate is disposed between the first circuit board and the base, the first insulation plate having a guide portion disposed corresponding to the first through hole for guiding the first electrical connection.

7. The motor as claimed in claim 1, wherein the pillow further comprises a cover extending axially from the base, the cover and the base forming a first enclosed space for accommodating the first circuit board and the second circuit board.

8. The motor of claim 7, further comprising a second insulating plate disposed between the first circuit board and the second circuit board.

9. The motor of claim 8, wherein the second insulating plate is provided with a sidewall extending axially from the periphery.

10. The motor as claimed in claim 1, further comprising a clamping member disposed on the first circuit board, the clamping member clamping the first electrical connector such that the winding set is electrically connected to the first circuit board.

11. The motor of claim 10, wherein the clamping member has a clamping portion for clamping the first electrical connector.

12. The motor as claimed in claim 11, wherein the first circuit board has a through hole corresponding to the clamping portion.

13. The motor as claimed in claim 10, wherein the first circuit board has a through portion correspondingly passing through the engaging hole of the first circuit board, so that the holder is fixed on the first circuit board.

14. The motor as claimed in claim 10, wherein the holding member is disposed on a side of the first circuit board away from the shaft tube.

15. The motor as claimed in claim 10, wherein the clamping member is provided at a side of the first circuit board facing the shaft tube.

16. The motor as claimed in claim 1, wherein the base further comprises a circumferentially disposed base periphery, the base periphery having a plurality of heat dissipating members disposed thereon.

17. A motor, comprising:

a stator having:

the winding group extends out of the conductive element; and

the pillow seat comprises a base and an axle tube extending from one side of the base, wherein a first through hole is formed in the position, adjacent to the axle tube, of the base and used for the conductive element to penetrate through;

the rotor is provided with a rotating shaft, sleeved on the shaft tube and rotates along a central shaft; and

the first circuit board is arranged on the other side of the shaft tube arranged on the base, and the conductive element is electrically connected with the first circuit board.

18. The motor of claim 17, further comprising a second circuit board electrically connected to the first circuit board.

19. The motor of claim 17, further comprising a waterproof member partially received in the first through hole for the conductive element to pass through.

20. The motor as claimed in claim 17, further comprising a clamping member disposed on the first circuit board, the clamping member clamping the conductive element.