CN103973018B - Motor stator and wire connecting device thereof - Google Patents

Abstract

The invention is a motor stator and its wiring device. It includes an iron core, a plurality of coil windings are spaced inside the iron core, and a wiring device is provided on one side of the iron core. The wiring device includes a plurality of connecting pieces and a In the outer frame, each connecting piece is a metal conductor and includes an arc segment and at least one conductive part. The arc segments are in the shape of long narrow sheets and are bent in an arc shape along the long axis. The conductive parts are connected respectively. The coil windings have multiple connecting pieces for connecting to power supply. The outer frame covers and separates the connecting pieces. Through the design of the modular wiring device, the present invention can easily install and connect the connecting pieces. The coil winding can provide a larger current flow without increasing the overall thickness of the motor stator, and can be applied to high-power motor specifications.

Description

Motor stator and its wiring device

technical field

The present invention relates to a stator structure of a motor, in particular to a wiring device for connecting various sets of coil windings on the stator.

Background technique

A motor is a commonly used device that can convert electrical energy into rotational mechanical energy. Motors can be divided into three-phase motors and single-phase motors according to their types. The casing of the three-phase motor is provided with a stator and a rotor, the stator is fixed on the motor casing, and the rotor is rotatably arranged in the stator. There are multiple coil windings symmetrically distributed on the stator, and these coil windings can be divided into three groups according to the polarity. When in use, a three-phase power supply can be input to generate a rotating magnetic field, and then drive the rotor to rotate.

The three-phase motor stator in the prior art includes an iron core composed of laminated silicon steel sheets. The inner ring wall of the iron core is provided with a plurality of I-shaped columns at intervals, and a coil is respectively arranged on each I-shaped column. The windings of each coil are connected by wires in a specific connection sequence to form corresponding phases, and the cross-section of the wires is circular.

However, in the prior art, since electric wires are used to connect the coil windings, a plurality of electric wires must be used to connect the corresponding coil windings during installation, so the installation procedure is relatively complicated, and there is inconvenience in installation, and the amount of current that can be input is also small. It will be limited by the wires, and the output power of the motor will be limited by the wires.

Contents of the invention

In view of the shortcomings of the motor stator in the prior art, such as relatively complicated installation procedures and insufficient input current, the present invention designs a motor stator and its wiring device, which can achieve simple and fast connection of each coil winding and can pass through Invention purpose of greater current flow.

In order to achieve the above-mentioned purpose of the invention, the present invention designs a wiring device for a motor stator, and the technical means used include: setting a plurality of connecting pieces and an outer frame; each connecting piece is a metal conductor, and each connecting piece is It includes an arc segment and more than one guiding part. The arc segment is bent along the long axis to form a circular arc shape. The guiding part connects the arc segment. A power input part is extended, and the arc segments of these connecting pieces are stacked at intervals and arranged to form a circular ring; the outer frame is a circular ring, which is made of insulating material. The frame wraps the connecting pieces, and the outer frame separates the arc segments of the connecting pieces, and the connecting parts and power input parts of the connecting pieces protrude outside the outer frame.

In the wiring connection device of the motor stator, the guiding parts face the direction of the center of the circular ring formed by the connecting pieces.

The wiring device for the motor stator, wherein the lead part and the power input part are sheets and are pierced with socket holes.

A motor stator with the above wiring device, which includes an iron core, a plurality of coil windings and the wiring device; the iron core is an annular hollow cylinder formed by stacking and connecting multiple silicon steel sheets, The inside of the iron core protrudes to form a plurality of I-shaped columns, and each I-shaped column is arranged at intervals along the inner peripheral wall of the iron core; the coil windings are respectively arranged on the I-shaped columns of the iron core, and each coil winding is respectively There are two lead-out parts, each lead-out part is located at the same side of the iron core; the wiring device is arranged on one side of the iron core, and each lead-in part of the connecting pieces is respectively connected to each lead-out part of the coil windings.

In the motor stator with the wiring device, the outer diameter of the outer frame is equal to or smaller than the outer diameter of the iron core.

In the motor stator with a wiring device, the number of these coil windings is twelve groups, and the connecting pieces of the wiring device include three first-type connecting pieces, nine second-type connecting pieces and one third-type connecting piece. Type connecting piece; the first type connecting piece includes an arc segment, a conducting portion and a power input portion, the conducting portion and the power input portion are respectively arranged at both ends of the arc segment; the second type connecting piece It includes an arc segment and two guide parts, and the two guide parts are respectively arranged at both ends of the arc segment; the third type connecting piece includes an arc segment and three guide parts, and the two guide parts are respectively arranged on At both ends of the arc segment, another guiding part is arranged at the middle section of the arc segment.

By using the above-mentioned technical means, the wiring device is formed as a modular component, which can be directly arranged on one side of the iron core and connected with the coil windings, thereby effectively simplifying the installation procedures. Since the cross-sectional area of each connecting piece is rectangular, under the situation of occupying the same space cross-sectional size, the cross-sectional area of the connecting piece is larger than that of the circular cross-section wire used to connect each coil winding in the prior art, so the junction of the present invention The wire device achieves better conductivity with a larger cross-sectional area of the sheet, and can pass a larger amount of current per unit time, because the current value that can be input will affect the performance of the motor, and the limit of the current value comes from the coil winding The cross-sectional area of the enameled wire conductor, but when the cross-sectional area of the enameled wire conductor is larger, the cross-sectional area of the wiring device needs to be larger to match the enameled wire conductor, so the wiring device of the present invention can take care of the enameled wire conductor in the smallest volume. The cross-sectional area, the current value that can be input is higher than that of the circular conductor, which not only provides the motor with greater power, but also takes into account the reduction of the overall volume of the motor, and the overall width corresponds to the distance that the winding coil protrudes from the outside of the core, so The wiring device can connect the coil windings to each other without increasing the overall thickness of the motor stator, and can take into account both power and overall volume, and has considerable practicability and convenience.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the three-dimensional exterior view of the present invention;

Fig. 2 is the three-dimensional exploded view of the present invention;

Fig. 3 is the three-dimensional exploded view of the connecting piece of the present invention;

Fig. 4 is a side view appearance schematic diagram of the present invention;

FIG. 5 is another perspective exploded view of the connecting piece of the present invention.

Among them, reference signs

10 core

11 column

20 Coil Windings

21 lead-out

30 Wiring device

31 connecting piece

310 arc segments

311 Leading part

312 Power input section

313, 314 socket holes

32 outer frame

33 Connecting pieces of the first type

34 Connecting piece of the second type

35 The third type of connecting piece

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

The present invention is a motor stator and its wiring device. Please refer to FIG. 1 and FIG. 2 . The motor stator includes an iron core 10 , a plurality of coil windings 20 and a wiring device 30 .

The iron core 10 is the prior art, which includes a plurality of silicon steel sheets, each silicon steel sheet is stacked and connected to form a circular hollow cylinder with a considerable thickness, and a plurality of I-shaped columns 11 protrude inside it, The I-shaped pillars 11 are arranged at intervals along the inner peripheral wall of the iron core 10 . In a specific embodiment of the present invention, the number of I-shaped pillars 11 arranged inside the iron core 10 is twelve.

The coil windings 20 are formed by winding conductive materials (for example: enameled wire) on the I-shaped column 11 of the iron core 10, and the two ends of the conductive materials on each coil winding 20 are respectively formed as a lead-out part 21, and the two lead-out parts Section 21 is located at the same side of coil winding 20 . Two opposite outer sides of the coil windings 20 protrude from two sides of the iron core 10 . The number of coil windings 20 in the specific embodiment of the present invention is twelve groups.

Please refer to FIG. 2 to FIG. 4 , the wiring device 30 includes a plurality of connecting pieces 31 and an outer frame 32 .

The connecting piece 31 is made of a metal conductor, and each includes an arc segment 310. The arc segment 310 is in the shape of a long narrow sheet and is bent along the long axis to form an arc. The connecting piece 31 is provided with at least two conducting parts 311. The conducting portion 311 is connected to the arc segment 310 and is located on one side of the arc segment 310 , and the conducting portions 311 are used for connecting the lead-out portions 21 of the coil windings 20 . Among the connecting pieces 31, there are several connecting pieces 31 that only have a connecting portion 311, and a power input portion 312 is extended on the arc segment 310 of the connecting pieces 31 that only have a connecting portion 311. The power input portions 312 correspond to multi-phase power sources. In the specific embodiment of the present invention, a three-phase power source is configured, so the number of connecting pieces 31 with power input portions 312 is three. The connection relation and the relative position of the conducting portion 311 and the power input portion 312 of these connection pieces 31 correspond to the wire groups used to connect the coils of the windings in the multi-pole three-phase motor of the prior art. The number of coil windings 20 provided in 10 has different connection relationships and relative positions. The arc segments 310 of the connecting pieces 31 are stacked at intervals and arranged to form a circular ring, the connecting parts 311 face the direction of the center of the circular ring, and the outer diameter of the ring formed by the connecting pieces 31 is slightly smaller than the circular ring. The outer diameter of the iron core 10 and the width of the arc segments 310 of the connecting pieces 31 are close to the protruding distance of the coil windings 20 from the iron core 10 . In a specific embodiment of the present invention, the connecting portion 311 is a sheet body and is provided with a socket hole 313 , and the power input portions 312 are sheet bodies and is provided with a socket hole 314 .

The stator of a three-phase motor with multiple poles has a variety of wiring methods. Taking the stator structure with twelve slots as an example, the change of the wiring method can be used to make it have different numbers of poles such as eight poles and ten poles. In the present invention In the specific embodiment, taking the coil winding of a motor stator with ten poles and twelve slots as an example, as shown in FIG. 3 to FIG. sheet 34 and the third type connecting sheet 35.

There are three connecting pieces 33 of the first type, which are respectively used to connect the three-phase power supply to one of the lead-out parts 21 of the coil winding 20, which includes an arc segment 310, a conducting part 311 and a power input part 312, The conducting portion 311 and the power input portion 312 are respectively disposed at two ends of the arc segment 310 .

The number of the second type connecting piece 34 is nine pieces, which are respectively used to connect one of the lead-out parts 21 of the two coil windings 20. The second type connecting piece 34 includes an arc segment 310 and two conducting parts 311. Connecting portions 311 are respectively provided at both ends of the arc segment 310 .

The number of the third type connecting piece 35 is one piece, which is used to connect one of the lead-out parts 21 of the three coil windings 20 at the same time. The third type connecting piece 35 includes an arc segment 310 and three conducting parts 311, two of which are connected The portion 311 is disposed at both ends of the arc segment 310 , and the other connecting portion 311 is disposed at the middle of the arc segment 310 .

The outer frame body 32 is a ring-shaped ring body, which is made of insulating material. Cover the space to cover the arc segments 310 of these connecting pieces 31, thereby separating the arc segments 310 of these connecting pieces 31, so that each arc segment 310 will not contact each other, and the connection of these connecting pieces 31 The portion 311 and the power input portion 312 protrude from the outer frame 32 . In a specific embodiment of the present invention, the outer frame body 32 is disposed on the connecting pieces 31 in a manner of coating injection. The outer frame body 32 and the ring formed by the connecting pieces 31 have the same center.

Through the use of the above-mentioned technical means, the wiring device 30 is formed as a modular component, and can be directly arranged on one side of the iron core 10. Each connecting piece 31 has the same center of circle as the iron core 10. The wiring device 30. Connect the lead-out parts 21 of the coil windings 20 at adjacent positions with the lead-in parts 311 of each connecting piece 31, and these lead-in parts 311 are sleeved with the lead-out parts 21 by their sleeve holes 313, so that each lead-out part 21 can be completed. The electrical connection between the coil windings 20 provides quick connection between the coil windings 20 through the wiring device 30 , which effectively simplifies the installation procedure. A larger amount of current can be passed per unit time, because the current value that can be input will affect the performance of the motor, and the limitation of the current value comes from the cross-sectional area of the enameled wire conductor of the coil winding 20, but when the cross-sectional area of the enameled wire conductor is larger, Then the cross-sectional area of the wiring device needs to be larger to match the enameled wire conductor, so the wiring device of the present invention can take into account the cross-sectional area of the enameled wire conductor in the smallest volume, and the current value that can be input is higher than that of a circular conductor. It not only provides the motor with greater power, but also takes into account the reduction of the overall volume of the motor, and the overall width corresponds to the distance that the winding coil protrudes from the outside of the iron core, so the wiring device can be connected without increasing the overall thickness of the motor stator. The coil windings are connected to each other, and the power and the overall volume can be taken into consideration, which has considerable practicability and convenience.

Since the cross-sectional area of each connecting piece 31 is rectangular, under the situation of occupying the same space cross-sectional size, using a rectangular cross-section can obtain a larger area ratio than a circular cross-section, so it can have better electrical conductivity. A larger amount of current passes through the time, so it is more suitable for high-power motors. Because the current value that can be input will affect the performance of the motor, the limitation of the current value comes from the cross-sectional area of the enameled wire conductor of the coil winding 20. However, when the cross-sectional area of the enameled wire conductor is larger, the cross-sectional area of the wiring device 30 needs to be larger to It is compatible with the enameled wire conductor, so the wiring device 30 of the present invention can take into account the cross-sectional area of the enameled wire conductor in the smallest volume, and the current value that can be input is higher than that of the circular conductor, which not only provides the motor with greater power, but also At the same time, the reduction of the overall volume of the motor is taken into account.

The overall width of each connecting piece 31 of the wire connecting device 30 corresponds to the distance that the winding coil 20 protrudes from the outside of the iron core 10, so the wire connecting device 30 can connect each coil winding 20 to each other without increasing the overall thickness of the motor stator. The width of the arc-shaped body 310 of each connecting piece 31 is roughly proportional to the amount of current it can withstand. As the input current specification increases, the distance that the coil winding 20 protrudes from the core 10 will increase, and the arc-shaped The sheet body 310 can then be set to have a larger width, so it has an electrical conductivity corresponding to the current specification.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (5)

1. A wiring device for a motor stator, characterized in that it includes a plurality of connecting pieces and an outer frame; Each connecting piece is a metal conductor, and each connecting piece includes an arc segment and more than one conducting part. The arc segment is bent along the long axis in an arc shape, and the leading part is a sheet body and is provided with a sleeve hole , the connecting portion connects the arc segment; The plurality of connecting pieces include a plurality of first-type connecting pieces, a plurality of second-type connecting pieces and at least one third-type connecting piece; Each first type connecting piece includes an arc segment, a conducting portion and a power input portion, and the conducting portion and the power input portion of the first type connecting piece are respectively arranged on two ends of the arc segment of the first type connecting piece. end; Each second-type connecting piece includes an arc segment and two conducting portions, and the two conducting portions of the second-type connecting piece are respectively arranged at both ends of the arc-segment of the second-type connecting piece; Each third-type connecting piece includes an arc segment and three conducting parts, and two conducting parts of the third-type connecting piece are respectively arranged at both ends of the arc-section of the third-type connecting piece, and the third-type connecting piece The other connecting part of the connecting piece is arranged at the middle section of the arc segment of the third type connecting piece; The arc segments of the first-type connecting pieces, the second-type connecting pieces and the third-type connecting pieces are stacked at intervals in the thickness direction and arranged to form a circular ring, wherein the thickness direction is perpendicular to the axial direction, and the The leading parts of some first-type connecting pieces, second-type connecting pieces and third-type connecting pieces face the direction of the center of the circular ring; The outer frame body is a circular ring body, which is made of insulating material. The outer frame body covers the connecting pieces, and the outer frame body separates the arc segments of the connecting pieces. The connecting part and the power input part of the connecting piece protrude outside the outer frame. 2 . The motor stator wiring device according to claim 1 , wherein the power input parts are sheet bodies and are pierced with socket holes. 3 . 3. A motor stator, characterized in that it comprises an iron core, a plurality of coil windings and the wiring device according to claim 1 or 2; The iron core is a ring-shaped hollow cylinder formed by stacking and connecting multiple silicon steel sheets. The inside of the iron core protrudes to form a plurality of I-shaped columns, and each I-shaped column is arranged at intervals along the inner peripheral wall of the iron core; The coil windings are respectively arranged on the I-shaped columns of the iron core, and each coil winding is respectively provided with two lead-out parts, and each lead-out part is located on the same side of the iron core; The wire connection device is arranged on one side of the iron core, and the socket holes of the lead parts of the connecting pieces are respectively sleeved and connected with the lead parts of the coil windings. 4. The motor stator according to claim 3, wherein the outer diameter of the outer frame is equal to or smaller than the outer diameter of the iron core. 5. The motor stator according to claim 3 or 4, wherein the number of the coil windings is twelve groups, and the connection pieces of the wiring device include three first-type connection pieces and nine second-type connection pieces. Connecting piece and a third type connecting piece.