CN219576807U

CN219576807U - Motor stator lead fixing device and motor

Info

Publication number: CN219576807U
Application number: CN202321186403.0U
Authority: CN
Inventors: 韩元平; 董海宇; 焦朋伟
Original assignee: Hefei Xinhu Canned Motor Pump Co Ltd
Current assignee: Hefei Xinhu Canned Motor Pump Co Ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-08-22
Anticipated expiration: 2033-05-15

Abstract

The utility model relates to the technical field of motors, in particular to a motor stator lead fixing device and a motor, wherein the motor stator lead fixing device comprises a base made of insulating materials, a connecting part extending towards a first end is arranged on the base, the connecting part is used for mounting the base on the motor, a first conducting ring, a second conducting ring and a third conducting ring which are made of conducting materials are arranged in the base, the first conducting ring, the second conducting ring and the third conducting ring are separated by the base, binding posts extending towards the second end and exposed out of the base are respectively arranged on the first conducting ring, the second conducting ring and the third conducting ring, the binding posts are arranged around the circumference of the base at intervals, and contact pins extending towards the second end and exposed out of the base are also respectively arranged on the first conducting ring, the second conducting ring and the third conducting ring. The utility model is convenient for connecting the leads and improves the installation efficiency of the leads.

Description

Motor stator lead fixing device and motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor stator lead fixing device and a motor.

Background

The motor is a common power device and comprises a stator and a rotor, wherein the stator comprises a stator core and a stator winding arranged on the stator core, the rotor comprises a rotor core and a rotor winding arranged on the rotor core, when three-phase alternating current is fed into the stator winding, a rotating magnetic field can be generated, the rotor winding cuts the rotating magnetic field, induced electromotive force and current are generated, and electromagnetic torque is formed to enable the rotor to rotate.

In order to energize the stator windings, leads are usually led out from the stator windings for connecting with external power supply, the leads are usually enameled wires identical to the stator windings, and the leads are usually positioned at the head end and tail end of each stator winding.

However, the connection method of the lead wire has the following problems: when the number of slots of the stator is large, for example, more than six, the number of leads is correspondingly large, and the leads are required to be welded with the electrode plates in the socket, so that the positions for welding are small, the number of required welding is large, and the welding is not easy to carry out. In addition, considering the wire diameters of the leads, when the number of leads is large, the volume required for the socket is increased correspondingly, and an additional space is required for placing the socket on the motor.

Disclosure of Invention

The utility model aims to provide a motor stator lead fixing device and a motor, which are convenient for lead connection and improve lead installation efficiency.

To achieve the above object, in a first aspect, there is provided a stator lead fixing device for an electric motor, including a base made of an insulating material, on which a connection portion extending toward a first end is provided, the connection portion being configured to mount the base on the electric motor, a first conductive ring, a second conductive ring, and a third conductive ring made of a conductive material are provided in the base, the first conductive ring, the second conductive ring, and the third conductive ring are separated by the base, binding posts extending toward the second end and exposed outside the base are provided on the first conductive ring, the second conductive ring, and the third conductive ring, respectively, and the binding posts are arranged at intervals around a circumference of the base, and pins extending toward the second end and exposed outside the base are also provided on the first conductive ring, the second conductive ring, and the third conductive ring, respectively, and the pins are configured to be electrically connected with a motor controller of the electric motor.

In some embodiments, the pins are integrally formed at an end of one of the posts of the corresponding conductive ring.

In certain embodiments, the pin end is higher than the post.

In some embodiments, the base is provided with a through hole at the center, the lead can pass through the through hole, the terminal is provided with a wiring part on the side facing the through hole, and the lead can be fixed on the wiring part.

In some embodiments, the side of the pin facing the through hole is also provided with a wiring portion.

In some embodiments, the wire connection portion includes a first section and a second section, the first section extends toward the through hole to form an inner end, the second section is fixedly connected to the inner end of the first section, the second section extends toward the second end, and the wire connection portion forms a wire winding space.

In some embodiments, the first conductive ring, the second conductive ring, and the third conductive ring are stacked in sequence, and the first conductive ring, the second conductive ring, and the third conductive ring are spaced apart from each other by a distance.

In some embodiments, the connection portion is a connection plate, and a connection hole is provided on the connection plate, and the connection hole is used for being connected with the motor.

In a second aspect, a motor is provided, including a housing, a stator and a rotor are disposed in the housing, the stator has a lead, one end of the stator in an axial direction is provided with a motor controller, the above motor stator lead fixing device is disposed between the stator and the motor controller, the connecting portion is detachably connected with the stator or the housing, the lead is fixed on the motor stator lead fixing device, and the contact pin is inserted on the motor controller.

In some embodiments, the motor controller includes a drive circuit board, and the pins are plugged onto the drive circuit board.

Compared with the prior art, the utility model has the beneficial effects that: the lead wire on the stator can be installed on the terminal of corresponding position for the lead wire switches on with the conducting ring that corresponds, and the contact pin on the rethread conducting ring is connected with the motor controller electricity, finally realizes that the lead wire is connected with the power, because the circumference of terminal around the base is arranged, makes the lead wire can be connected with the terminal of corresponding position, thereby makes things convenient for the connection of lead wire, can improve the installation effectiveness of lead wire, when solving lead wire quantity more, the problem of welding difficulty. In addition, through set up connecting portion on the base for the base can be convenient dismouting on the motor, reduces maintenance time and cost.

Drawings

Fig. 1 is a cross-sectional view of a motor according to an embodiment of the present utility model.

Fig. 2 is a perspective view of a motor stator lead fixing device according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a motor stator lead fixing device according to an embodiment of the present utility model with a base removed.

Fig. 4 is a schematic diagram of a first conductive ring according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a second conductive ring according to an embodiment of the present utility model.

Fig. 6 is a schematic diagram of a third conductive ring according to an embodiment of the present utility model.

Detailed Description

The technical scheme of the utility model is described in detail below with reference to the accompanying drawings.

Fig. 1 shows a cross-sectional view of an electric machine according to an embodiment of the present utility model, referring to fig. 1, the electric machine includes a housing 1, a stator 2 disposed in the housing 1, and a rotor 3, wherein the stator 2 is fixedly disposed on the housing 1, the rotor 3 is coaxially disposed inside the stator 2, and the rotor 3 is rotatable relative to the stator 2. The stator 2 includes a stator core and stator windings provided on the stator core, the stator windings being generally formed by winding enamel wires and having a head end and a tail end, and lead wires (also generally enamel wires) provided on the head end and/or the tail end for connection with an external power source, for supplying electric power to the stator 2, thereby generating a rotating magnetic field to rotate the rotor 3.

The motor controller 4 is further arranged inside the shell 1, the motor controller 4 is connected with the power interface 11 arranged on the shell 1, the lead wire can be connected to the motor controller 4, and the lead wire is connected with an external power supply through the motor controller 4. Specifically, the motor controller 4 includes a driving circuit board 41 and a main control circuit board, and leads may be connected to the driving circuit board 41.

In order to connect the leads with the driving circuit board 41, the embodiment of the present utility model provides a motor stator lead fixing device 5, the motor stator lead fixing device 5 is disposed at one axial end of the stator 2 and located between the stator 2 and the motor controller 4, the motor stator lead fixing device 5 is electrically connected with the motor controller 4, the leads may be connected to the motor stator lead fixing device 5, and the motor controller 4 is connected through the motor stator lead fixing device 5.

Fig. 2 shows a schematic view of the motor stator lead wire fixture 5. Referring to fig. 2, the motor stator lead fixing device 5 includes a base 51 made of an insulating material (for example, most of non-metal materials, especially plastics), and the base 51 may be annular, but is not limited thereto, and may have other geometric shapes. The diameter of the base 51 is close to or identical with the diameter of the stator 2, ensuring that the base 51 can smoothly enter the inside of the housing 1, and the position of the lead on the stator 2 can correspond to the position of the base 51.

In this embodiment, the center of the base 51 is provided with a through hole 511, and the lead can pass through the through hole 511 from bottom to top (refer to the direction in fig. 2). The base 51 is provided with a connection portion 512 extending toward the position of the stator 2, and the base 51 can be mounted on the stator 2 or the housing 1 by the connection portion 512. Specifically, in this embodiment, the connection portion 512 is a connection plate extending to the position of the stator 2 (downward extending in fig. 2), a connection hole 5121 is provided on the connection plate, a radially protruding bump is provided on the stator 2 or the housing 1, and the connection hole 5121 can be clamped on the bump, so that the mounting of the base 51 is achieved. The base 51 is thus mounted on the stator 2 or the housing 1 in a snap-like detachable manner, facilitating maintenance of the motor.

The direction in which the connection portion 512 extends downward is sometimes referred to as a first end, and the direction in which the connection portion extends upward is correspondingly referred to as a second end. The directions may of course be reversed to define the first end and the second end.

Fig. 3 shows a schematic view of the motor stator lead fixture 5 with the base 51 removed. Referring to fig. 3 in combination with fig. 2, the base 51 is internally provided with a first conductive ring 52, a second conductive ring 53 and a third conductive ring 54 made of a conductive material (for example, most of a metal material, especially copper), and the first conductive ring 52, the second conductive ring 53 and the third conductive ring 54 are spaced apart from each other, so that the base 51 separates the first conductive ring 52, the second conductive ring 53 and the third conductive ring 54 from each other, thereby insulating the first conductive ring 52, the second conductive ring 53 and the third conductive ring 54 from each other.

In the present embodiment, the first conductive ring 52, the second conductive ring 53 and the third conductive ring 54 are stacked in this order from bottom to top, and the first conductive ring 52, the second conductive ring 53 and the third conductive ring 54 are provided with the first post 521, the second post 531 and the third post 541 which extend upward and are exposed outside the base 51, respectively, and the first post 521, the second post 531 and the third post 541 are used for connecting leads. The first, second and third posts 521, 531 and 541 are integrally surrounded to form a ring shape arrayed around the circumference of the base 51, and the first, second and third posts 521, 531 and 541 are disposed at intervals therebetween. The heights of the ends of the first, second and third posts 521, 531 and 541 may be flush with each other as shown in fig. 2, or may have different heights from each other. The number and positions of the first, second and third binding posts 521, 531 and 541 can be adjusted according to the positions of the stator windings on the stator, so that each of the first, second and third binding posts 521, 531 and 541 can have a corresponding stator winding.

In addition, the first, second and third conductive rings 52, 53 and 54 are respectively provided with the first, second and third pins 522, 532 and 542 extending upward and exposed outside the base 51, and the ends of the first, second and third pins 522, 532 and 542 are higher than the ends of the first, second and third posts 521, 531 and 541, so that the first, second and third pins 522, 532 and 542 have a greater axial length so as to be connected to the driving circuit board, thereby allowing the first, second and third conductive rings 52, 53 and 54 to communicate with an external power source, wherein the first, second and third pins 522, 532 and 542 may correspond to one phase of three-phase electricity, respectively. The ends of the first pin 522, the second pin 532, and the third pin 542 may be flush with each other as shown in fig. 3, or may have different heights from each other.

In this embodiment, the first pin 522, the second pin 532, and the third pin 542 may be considered to be integrally formed on one of the first post 521, the second post 531, and the third post 541, respectively, so that the corresponding posts have a greater length. While in other embodiments, the first pin 522, the second pin 532, and the third pin 542 may be of a different configuration than any of the posts described above.

In the present embodiment, the first, second and third posts 521, 531 and 541 and the first, second and third pins 522, 532 and 542 are provided with the wiring portion 55 on the side facing the through hole 511, the wiring portion 55 being for connecting leads.

As shown in fig. 3, the wire connection portion 55 includes a first segment 551 and a second segment 552, the first segment 551 is fixedly connected to a corresponding terminal or pin, the first segment 551 extends toward the through hole 511 to form an inner end, the second segment 552 is fixedly connected to the inner end of the first segment 551, the second segment 552 extends toward an upper direction (a second end), and a wire winding space 553 is formed between the second segment 552 and the terminal or pin.

When the lead is mounted, the lead extends out of the through hole 511 of the base 51 and then continues to extend upwards to the wiring part 55 at the corresponding position, and the lead is pulled to wind the lead on the first segment 551 and/or the second segment 552, so that the lead is at least partially wound in the lead winding space 553, and the lead is fixed, for example, the lead can be extruded and welded by adopting resistance welding equipment. The fixed lead wire needs to be electrically connected to the connection part 55, so that the lead wire can be connected to the corresponding conductive ring and then connected to the corresponding phase line in the power supply, so that the stator winding generates a rotating magnetic field.

Fig. 4 shows a schematic view of the first conductive ring 52. Referring to fig. 4, a first terminal 521 and a first pin 522 are provided on the outer periphery of the first conductive ring 52 and extend upward. Fig. 5 shows a schematic view of the second conductive ring 53, referring to fig. 5, the second terminal 531 and the second pin 532 are provided on the outer circumference of the second conductive ring 53 and extend upward, and in addition, in order to enable the first terminal 521 and the first pin 522 on the first conductive ring 52 to smoothly pass through the second conductive ring 53, a first escape groove 523 is provided on the outer circumference of the second conductive ring 53 at positions corresponding to the first terminal 521 and the first pin 522. Fig. 6 shows a schematic view of the third conductive ring 54, referring to fig. 6, the third wiring terminal 541 and the third pin 542 are provided on the outer circumference of the third conductive ring 54 and extend upward, and in addition, in order to enable the first wiring terminal 521 and the first pin 522 on the first conductive ring 52 to smoothly pass through the third conductive ring 54, a second escape groove 543 is provided on the outer circumference of the third conductive ring 54 in a position corresponding to the first wiring terminal 521 and the first pin 522, and in order to enable the second wiring terminal 531 and the second pin 532 on the second conductive ring 53 to smoothly pass through the third conductive ring 54, a third escape groove 544 in a position corresponding to the second wiring terminal 531 and the second pin 532 is provided on the outer circumference of the third conductive ring 54.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The motor stator lead fixing device is characterized by comprising a base made of insulating materials, wherein a connecting part extending towards a first end is arranged on the base, the connecting part is used for installing the base on a motor, a first conductive ring, a second conductive ring and a third conductive ring which are made of conductive materials are arranged in the base, the first conductive ring, the second conductive ring and the third conductive ring are separated by the base, binding posts extending towards a second end and exposed out of the base are respectively arranged on the first conductive ring, the second conductive ring and the third conductive ring, the binding posts are arranged at intervals around the circumference of the base, contact pins extending towards the second end and exposed out of the base are respectively arranged on the first conductive ring, the second conductive ring and the third conductive ring, and the contact pins are used for being electrically connected with a motor controller of the motor.

2. The motor stator lead fixing device according to claim 1, wherein the pins are integrally formed at an end of one of the posts of the corresponding conductive ring.

3. The motor stator lead fixing device according to claim 1, wherein the pin end is higher than the post.

4. The motor stator lead fixing apparatus according to claim 1, wherein a through hole is provided in a center of the base, a lead can pass through the through hole, a wiring portion is provided on a side of the post facing the through hole, and the lead can be fixed on the wiring portion.

5. The motor stator lead fixing device according to claim 4, wherein a wiring portion is also provided on a side of the pin facing the through hole.

6. The motor stator lead fixing device according to claim 4 or 5, wherein the wire connection portion includes a first section and a second section, the first section extends toward the through hole position to form an inner end, the second section is fixedly connected to the inner end of the first section, the second section extends toward the second end, and the wire connection portion forms a lead winding space.

7. The motor stator lead fixing device according to claim 1, wherein the first conductive ring, the second conductive ring and the third conductive ring are sequentially stacked, and the first conductive ring, the second conductive ring and the third conductive ring are spaced apart from each other by a distance.

8. The motor stator lead fixing device according to claim 1, wherein the connection portion is a connection plate, and a connection hole is provided on the connection plate, and the connection hole is used for connection with a motor.

9. The motor comprises a shell, wherein a stator and a rotor are arranged in the shell, the motor is characterized in that the stator is provided with a lead, one axial end of the stator is provided with a motor controller, the motor stator lead fixing device according to any one of claims 1-8 is arranged between the stator and the motor controller, the connecting part is detachably connected with the stator or the shell, the lead is fixed on the motor stator lead fixing device, and the contact pin is inserted on the motor controller.

10. The motor of claim 9, wherein the motor controller includes a drive circuit board, the pins being plugged onto the drive circuit board.