CN214205193U - Vehicle window driving device, motor and stator assembly thereof - Google Patents

Abstract

The utility model discloses a motor, it is including stator module and relative stator module pivoted rotor, stator module includes the iron core, around locating coil on the iron core, be used for with the coil with the insulating frame of iron core insulation and fixed connection in connecting terminal on the insulating frame, connecting terminal is located the radial outside of insulating frame, each connecting terminal include with coil fixed connection's body and edge stator module's axial direction by the outside extension of body inserts the end on stator module's axial direction the body with the insulating frame overlaps mutually insert the end for the insulating frame axial is outside stretches out, the utility model discloses the motor is structurally more compact, connect more reliable and more stable in connection.

Description

Vehicle window driving device, motor and stator assembly thereof

Technical Field

The utility model relates to the technical field of electric machine, especially, relate to a motor and stator module thereof to and door window drive arrangement including this motor.

Background

The motor is widely used in various industries as a most common power source, and is used in automobiles as a driving motor for opening and closing a power window. The motor is composed of a stator and a rotor rotating relative to the stator, wherein the rotor is provided with a permanent magnet, and the stator is provided with a coil. The stator coil is electrified to generate a changing magnetic field, and the changing magnetic field and the magnetic field of the rotor permanent magnet act to push the rotor to rotate continuously.

In the existing motor structure, a wiring terminal is inserted into an axial side end of a stator, and the tail end of a coil is welded on the wiring terminal. The driving circuit board is arranged on the axial outer side of the stator and connected with the wiring terminal to conduct an external power supply and the coil. In the motor structure, the circuit board is opposite to the rotor, and the Hall element on the circuit board can sense the position of the rotor so as to control the operation of the motor. However, the provision of the connection terminal increases the axial height of the motor, and the yoke portion of the stator cannot be made too small for stable mounting of the terminal, so that the motor as a whole becomes large in size.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a motor and a stator assembly thereof, which are compact in structure, and a window driving apparatus including the motor.

The utility model provides a stator module, include the iron core, around locating coil on the iron core, be used for with the coil with insulating frame and the fixed connection that the iron core is insulating in connecting terminal on the insulating frame, connecting terminal is located the radial outside of insulating frame, each connecting terminal include with coil fixed connection's body and edge stator module's axial direction by the outside extension of body insert the end on stator module's axial direction the body with the insulating frame overlap mutually insert the end for the insulating frame axial is outwards stretched out.

Further, the insertion end is in a shuttle shape, and a through hole is formed in the center of the insertion end.

Furthermore, a clamping hook is formed on the outer wall surface of the body, a clamping groove is formed between the clamping hook and the body, an opening of the clamping groove faces away from the insertion end, and the tail end of the coil or a hanging wire for connecting the two coils is fixed in the clamping groove.

Furthermore, the connecting terminal also comprises a mounting end opposite to the insertion end, and the mounting end is fixed in a terminal seat; the circumferential outer wall surface of the insulating frame is protrudingly provided with a mounting seat, and the mounting seat is provided with an assembling groove for accommodating the terminal seat.

Furthermore, one of the terminal base and the mounting base is formed with a bump, and the other is formed with a limiting groove for receiving the bump.

Furthermore, the motor stator assembly further comprises a circuit board which is perpendicular to the axial direction of the stator assembly, a plug hole is formed at one end of the circuit board and is connected with the plug-in end of the connecting terminal in a plug-in mode, and the other end of the circuit board is connected with a connector which is used for being connected with an external power supply.

The motor comprises a stator assembly, a circuit board and a motor shell, wherein the stator assembly is arranged in the motor shell, the circuit board is fixed on the motor shell, one end of the circuit board, which is provided with the insertion hole, is axially opposite to the stator core, and the other end of the circuit board is staggered with the stator core.

Further, still include the circuit board that is on a parallel with the axial direction setting of stator module, the circuit board set up in the axial side of iron core.

Furthermore, the circuit board is connected with the connecting terminals through connecting elements, the connecting elements comprise first connecting parts and second connecting parts which are parallel, connecting holes are formed in the first connecting parts and are connected with the inserting ends of the connecting terminals in an inserting mode, and inserting holes are formed in the circuit board and are used for the second connecting parts to be inserted and connected.

The utility model also provides a motor, including above-mentioned stator module and relative stator module pivoted rotor.

The utility model also provides a door window drive arrangement, include as above the motor, the motor is used for driving lift door window or skylight.

Compared with the prior art, the stator assembly of the motor of the utility model biases the connecting terminal to the radial outer side of the insulating frame, the connecting terminal does not increase the axial height of the motor, the width of the yoke part of the iron core can be smaller, and the structure is more compact; in addition, the connecting terminal can be connected with other elements in a compression joint mode, automatic assembly of the circuit board can be achieved, and stability and reliability of electrical connection are guaranteed.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the motor of the present invention.

Fig. 2 is a cross-sectional view of the motor shown in fig. 1.

Fig. 3 is an exploded view of the motor shown in fig. 1.

Fig. 4 is a further exploded view of the stator of the motor shown in fig. 3.

Fig. 5 is a schematic perspective view of another embodiment of the motor of the present invention.

Fig. 6 is a cross-sectional view of the motor shown in fig. 5.

Fig. 7 is an exploded view of the motor shown in fig. 5.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and is not limited to the embodiments described below.

As shown in fig. 1 to 3, an electric motor according to an embodiment of the present invention includes a stator assembly and a rotor 20 rotating relative to the stator assembly. The motor of the embodiment can be used for driving the lifting window of the automobile.

The stator assembly includes a motor housing 10, a stator 30 fixedly disposed in the motor housing 10, and a circuit board 40 electrically connected to a coil in the stator 30. The rotor 20 is built in the stator 30 to constitute an inner rotor motor. The rotor 20 includes a rotating shaft 22, a rotor core piece surrounding the rotating shaft 22, and a permanent magnet 24 sleeved outside the rotor core piece, such as magnetic steel. The axial length of the rotating shaft 22 is much greater than the axial height of the permanent magnet 24, and both ends of the rotating shaft 22 extend out of the permanent magnet 24. The motor casing 10 includes a barrel casing 14 and a cover 16, and the motor casing 10 is provided with bearings 12 at two ends thereof, such as at the side end of the barrel casing 14 and the center of the cover 16, respectively, to support the rotation of the rotating shaft 22, so as to maintain the smooth rotation of the rotor 20 and reduce the generation of noise. In the illustrated embodiment, the top end of the rotating shaft 22, which serves as the output end of the entire motor, extends out of the motor through the cover 16 of the motor housing 10 for driving a load.

Referring to fig. 4, the stator 30 includes a core 32, a coil 34 wound around the core 32, an insulating frame 36 disposed between the core 32 and the coil 34, and a connection terminal 38 connecting the coil 34 and a circuit board 40. The core 32 is formed by stacking a plurality of silicon steel sheets, and includes a ring-shaped yoke portion 320 and a plurality of teeth 322 radially extending inward from the yoke portion 320, wherein the number of the teeth 322 is 12 in the illustrated embodiment. All the tooth portions 322 together enclose a cylindrical space, and the permanent magnets 24 of the rotor 20 are accommodated in the space and form a gap with the tooth portions 322. The respective teeth 322 are arranged at regular intervals in the circumferential direction of the core 32, and the coil 34 is wound around the respective teeth 322. The insulating frame 36 covers the core 32 to separate the core 32 from the coil 34, thereby preventing the coil 34 from short-circuiting. In the illustrated embodiment, the insulation frame 36 includes an upper insulation frame 36a and a lower insulation frame 36b, and the upper and lower insulation frames 36a and 36b are respectively sleeved on the iron core 32 from two axial sides of the iron core 32. It should be understood that in other embodiments, the insulation frame may be a unitary structure, and may be integrally coated on the core 32 by injection molding or the like.

The connecting terminals 38 are usually plural, and in the illustrated embodiment, the connecting terminals 38 are 3 and are arranged in a row at intervals and integrally fixed on a terminal base 39. Each of the connection terminals 38 is in the form of a plate and includes a body 380, and an insertion end 382 and a fitting end 384 formed at upper and lower ends (in this embodiment, axial ends) of the body 380, respectively. The body 380 is electrically connected to the coil 34, the insertion end 382 is electrically connected to the circuit board 40, and the mounting end 384 is integrally embedded in the terminal block 39. Preferably, the body 380 has a hook 386 formed on an outer wall surface thereof, the hook 386 is juxtaposed with the insertion end 382 and is bent reversely so that an opening of the hook 386 faces away from the insertion end 382, and a relatively narrow clamping groove 388 is formed between the hook 386 and the body 380. When the electric wire of the coil 34 is fixed to the connection terminal 38, the tail end of the coil 34 or a hanging wire connecting two coils 34 is hung on the hook 386 through the clip slot 388, and the coil 34 and the connection terminal 38 can be further fixed and electrically connected by soldering or butt welding. Preferably, the insertion end 382 of the connection terminal 38 has a pointed and wide-middle shuttle-shaped structure, which can serve as a guide in the assembly with the circuit board 40. The insertion end 382 is centrally formed with a perforation 383 so that the insertion end 382 has a certain deformability, can be narrowed when compressed, and can be elastically restored when the compression is removed.

The terminal block 39 may be made of an insulating material such as plastic, the connecting terminal 38 is placed in a mold in advance when the terminal block 39 is injection molded, the fitting end 384 of the connecting terminal 38 is integrally fixed in the terminal block 39 while the terminal block 39 is molded, and the terminal block 39 is further formed with a positioning ring 392 below the insertion end 382 to fix the connecting terminal 38. The body 380 of the connection terminal 38 is preferably partially embedded in the terminal block 39 and partially protruded out of the terminal block 39, such as the outer wall surface of the body 380 formed with the hooks 386 and the hooks 386 on the outer wall surface protruded out of the terminal block 39, to facilitate connection with the coil 34. The terminal block 39 is connected to the insulating frame 36 of the stator 30 and located radially outside the insulating frame 36, and the body 380 of the connection terminal 38 substantially overlaps the insulating frame 36 in the axial direction; the insertion end 382 of the connection terminal 38 axially protrudes beyond the terminal block 39 and axially protrudes outward relative to the insulating frame 36 to facilitate connection with the circuit board 40. Since the terminal block 39 is disposed radially outside of the insulating frame 36 rather than at the axial-side end, the arrangement of the terminal block 39 and the connection terminal 38 substantially greatly reduces the axial height of the entire motor.

In the illustrated embodiment, the circumferential outer wall surface of the upper insulating holder 36a is formed with a mounting seat 360 protruding radially outward, and the mounting seat 360 is provided with a fitting groove 362 for fitting the terminal block 39. Preferably, the terminal block 39 is formed with a protrusion 390 protruding from both sides in the circumferential direction, and correspondingly, the mounting block 360 is formed with a limiting groove 364 on both sides in the circumferential direction of the fitting groove 362, and the limiting groove 364 communicates with the fitting groove 362. When assembled, the terminal block 39 is aligned with the fitting groove 362 and the insertion end 382 of the connection terminal 38 faces away from the mounting block 360, the terminal block 39 is axially inserted into the fitting groove 362 while the protrusions 390 are inserted into the corresponding retaining grooves 364. The convex-concave matching of the bump 390 and the limiting groove 364 limits the clamping of the terminal block 39 and the mounting block 360, so that the terminal block 39 cannot move in the circumferential direction and the radial direction. It should be understood that a limiting groove may be formed on the terminal block 39, and a bump may be correspondingly formed on the mounting block 360. In addition, the terminal block 39 and the insulating frame 36 may have other connection methods, such as a snap; alternatively, the terminal block 39 may be integrally formed with the insulating frame 36, and the mounting block 360 may be omitted.

The circuit board 40 is disposed at an axial side end of the stator 30, perpendicular to the motor axial direction, and also perpendicular to the connection terminal 38. Correspondingly, the circuit board 40 is formed with a plurality of insertion holes 42 for inserting the insertion ends 382 of the connection terminals 38. The connection terminal 38 of the present invention can be assembled with the circuit board 40 by press-fitting, and the shuttle-shaped structure of the insertion end 382 can guide the insertion end 382 to be inserted into the corresponding insertion hole 42; the perforations 383 in the insertion end 382 deform and narrow when compressed so that the insertion end 382 can pass smoothly through the mating opening 42; the insertion end 382 is deformed after passing through the insertion hole 42, so that the connection terminal 38 is not separated from the circuit board 40 without external force, and the connection between the circuit board 40 and the connection terminal 38 is more stable and reliable. Since the connection terminals 38 are disposed radially outside the stator 30, the axial height of the motor is reduced while allowing the circuit board 40 to be closer to the rotor 20.

In this embodiment, the circuit board 40 is fixedly connected to the motor casing 10 and located at the radial outer side of the stator core 32, a bracket 18 extends outward from the cover 16 of the motor along the radial direction of the motor for fixing the circuit board 40, and the circuit board 40 may be provided with an inverter circuit and a controller for driving and controlling the motor to operate. The circuit board 40 is rectangular as a whole, one end of the circuit board is an internal connection end close to the motor rotating shaft 22, and a plug hole 42 is formed on the circuit board and electrically connected with the connection terminal 38; the other end of the circuit board 40, which is remote from the motor shaft 22, is an external end, and is connected to a female connector 44, which can be conveniently connected to an external power source to supply power to the coil 34 of the stator 30. When the coil 34 is energized, a magnetic field is generated to polarize the tooth 322 to form a stator magnetic field, which periodically changes with the change of the current of the coil 34, and interacts with the magnetic field of the permanent magnet 24 of the rotor 20 to push the rotor 20 to continuously rotate so as to drive the load. Preferably, the inner terminal of the circuit board 40 is provided with a hall element for sensing the position of the rotor 20, and the inner terminal is axially opposite to the stator core 32, so that the hall element on the circuit board 40 is relatively close to the position of the rotor 20 in both axial and radial directions, and the position of the rotor 20 can be accurately sensed to control the operation of the motor.

In the automobile, because of different driving loads or the limitation of installation space, the relative positions of the motor and the circuit board need to be adjusted according to the practical application condition. Fig. 5 to 7 show a motor according to a second embodiment of the present invention, which can be used to drive a sunroof of a vehicle. The motor includes a motor case 10 ', a rotor 20, a stator 30, and a circuit board 40'. It differs from the first embodiment mainly in that: the circuit board 40' is arranged along the motor shaft, i.e. parallel to the axial direction of the motor, i.e. parallel to the connection terminals 38 of the stator 30. As shown in fig. 6 and 7, the circuit board 40' is axially opposed to the one or more coils 34 of the stator 30. The connection terminals 38 are disposed radially outside the insulating frame 36, and a plurality of connection members 64 are provided between the connection terminals 38 and the circuit board 40'. These connecting elements 64 are fixed to the cover 60 of the motor. In this embodiment, the connecting element 64 can be used to drive other loads without changing the structure of the motor, thereby further reducing the cost and time for designing and developing the motor.

The connecting members 64 are made of conductive material, each of which includes a first connecting portion 66 and a second connecting portion 68, the second connecting portion 68 and the first connecting portion 66 are elastically connected by an elastic portion 67, and the second connecting portion 68 and the first connecting portion 66 are substantially parallel to each other. The first connecting portions 66 are perpendicular to the connecting terminals 38, and each first connecting portion 66 is provided with a connecting hole 69 therethrough. When assembling, the connection terminals 38 are connected with the connection element 64 in a pressing connection mode, and the insertion end 382 of each connection terminal 38 is inserted into the connection hole 69 of the first connection part 66 of the connection element 64; each second connecting portion 68 includes a pin that is inserted into one of the insertion holes 42 'of the circuit board 40'.

The utility model discloses the stator module of motor arranges connecting terminal in the radial outside of insulating frame, and connecting terminal itself can not increase the axial height of motor. In addition, the connection terminals are disposed offset from the axial direction of the core of the stator, and the yoke width of the core is not affected by the connection terminals, so that the core can have a smaller size. In addition, the structure of the connecting terminal can be connected with other elements in a compression joint mode, automatic assembly of the circuit board can be achieved, stability and reliability of electrical connection are guaranteed, the circuit board can have different structures, sizes, arrangement directions and the like according to actual application requirements and is not limited by the internal structure of the motor, the installation and the application are more flexible, when the circuit board is perpendicular to the axial direction of the motor, the Hall element on the circuit board can be located near the rotor, and the position of the rotor can be accurately sensed so as to feed back and control operation of the motor. In a word, the utility model discloses motor overall structure is compact, the equipment is convenient, the size is controllable, control is accurate.

It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (11)

1. The utility model provides a stator module, includes stator core, around locating coil on the stator core, be used for with the coil with the insulating frame that stator core is insulating and fixed connection in connecting terminal on the insulating frame, its characterized in that: the connecting terminals are located on the radial outer side of the insulating frame, each connecting terminal comprises a body fixedly connected with the coil and an insertion end extending outwards from the body along the axial direction of the stator assembly, the body is overlapped with the insulating frame in the axial direction of the stator assembly, and the insertion end axially extends outwards relative to the insulating frame.

2. The stator assembly of claim 1, wherein the insertion end is a shuttle shape with a perforation formed centrally therein.

3. The stator assembly according to claim 1, wherein a hook is formed on an outer wall surface of the body, a clamping groove is formed between the hook and the body, an opening of the clamping groove faces away from the insertion end, and a terminal of the coil or a hanging wire connecting two coils is fixed in the clamping groove.

4. The stator assembly of any of claims 1-3, wherein the connection terminal further comprises a mounting end opposite the insertion end, the mounting end being secured within a terminal block; the circumferential outer wall surface of the insulating frame is protrudingly provided with a mounting seat, and the mounting seat is provided with an assembling groove for accommodating the terminal seat.

5. The stator assembly of claim 4, wherein one of the terminal block and the mounting block is formed with a protrusion, and the other is formed with a limiting slot to receive the protrusion.

6. The stator assembly according to any one of claims 1 to 3, further comprising a circuit board disposed perpendicular to an axial direction of the stator assembly, wherein an insertion hole is formed at one end of the circuit board to be inserted into the insertion end of the connection terminal, and a connector for connection with an external power supply is connected to the other end of the circuit board.

7. The stator assembly of claim 6, further comprising a motor housing for housing the stator assembly, wherein the circuit board is fixed to the motor housing, and one end of the circuit board, at which the insertion hole is formed, is axially aligned with the stator core, and the other end of the circuit board is staggered from the stator core.

8. The stator assembly of any of claims 1-3, further comprising a circuit board disposed parallel to an axial direction of the stator assembly, the circuit board disposed at an axial side end of the stator core.

9. The stator assembly according to claim 8, wherein the circuit board is electrically connected to the connection terminals through a connection element, the connection element comprises a first connection portion and a second connection portion which are parallel to each other, the first connection portion is formed with a connection hole to be inserted into the insertion end of the connection terminal, and the circuit board is formed with an insertion hole for the second connection portion to be inserted into.

10. An electrical machine comprising a stator assembly according to any of claims 1-9 and a rotor which rotates relative to the stator assembly.

11. A window drive comprising a motor as claimed in claim 10 for driving a lift window or sunroof.

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