CN218549611U

CN218549611U - Motor stator coil outlet structure

Info

Publication number: CN218549611U
Application number: CN202222783218.1U
Authority: CN
Inventors: 李嘉宾; 静占国; 徐啸天; 何阳; 房俊生; 翟立鹏; 刘跃; 杨佳
Original assignee: Shaanxi Fast Songzheng Electric Drive System Co ltd
Current assignee: Shaanxi Fast Songzheng Electric Drive System Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-28
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a motor stator coil outlet structure, which comprises a housing, be provided with the wire hole on the casing, the casing surface is provided with the terminal box, install the inside insulator that link up in the wire hole, install the electric conductor in the insulator, stator coil lead-out wire connect in the electric conductor is located the end in the casing, be provided with cable joint in the terminal box, cable joint connect in the electric conductor is located end in the terminal box. The utility model utilizes the insulator and the conductor to fix and connect the outgoing line of the stator coil of the motor, thereby eliminating the arrangement of a wiring board in the motor wiring box and further reducing the volume of the wiring box; and because the insulator structure is fixed, so can select high-quality insulating material preparation to overcome the encapsulation quality difference that exists that utilizes the insulating cement encapsulation mode great and partial insulating cement in the use easy because the high temperature and the problem that the softening leads to insulating sealed effect to worsen.

Description

Motor stator coil outlet structure

Technical Field

The utility model relates to a motor assembly technical field, in particular to motor stator coil outlet structure.

Background

After the motor stator coil is connected, the three-phase lead-out wire needs to be led out from the inner cavity of the motor stator into the motor junction box. When the three-phase outgoing line passes through the outgoing line hole in the stator, the three-phase line needs to be prevented from contacting with the inner wall of the outgoing line hole in the stator, the three-phase outgoing line needs to be fixed after being led out from the inner cavity of the stator to the junction box, and generally, the connection position of the junction box of the motor and the inner cavity of the stator needs to be isolated and sealed.

The existing three-phase outgoing line outgoing mode is mostly as follows: a wiring board is arranged in the junction box, the wiring board is made of insulating materials, conductive wires are embedded in the wiring board, a fixed outgoing line and a screw hole for crimping a three-phase cable are arranged on the wiring board, and the three-phase outgoing line is arranged on the wiring board after being led out from a stator outlet hole; the three-phase outgoing line is clamped by the fixing clamping plate at the position of the stator outgoing line hole to fix the three-phase outgoing line, so that the three-phase outgoing line is prevented from contacting with the stator outgoing line hole.

For a motor needing to isolate and seal a junction box and a stator inner cavity, at present, after a three-phase outgoing line is led out from a stator outgoing line hole, insulating colloid is used for encapsulating the stator outgoing line hole, and therefore fixing and sealing of the three-phase outgoing line are achieved.

At present, the assembly mode of the three-phase outgoing line of the motor stator at least has the following problems:

1. the outgoing line is installed and fixed by using the wiring board, and the wiring board occupies the internal volume of the wiring box, so that the wiring box is difficult to miniaturize;

2. the mode of fixing the three-phase outgoing line by using the fixing splint needs to design an installation and fixing scheme of the fixing splint, the scheme is complex, and the mode of using the fixing splint can not directly realize the isolation and sealing of the junction box and the motor cavity generally;

3. the scheme of encapsulating the insulating glue can realize the fixation of the three-phase outgoing line and the sealing between the junction box and the motor cavity, but the material price of the insulating glue is generally higher, and the difference of encapsulation shape and encapsulation quality is larger due to the difference of operation processes; and the temperature of the inner cavity of the motor is high in the running process, and part of the insulating glue is easy to soften at high temperature, which may cause the encapsulating fixation and the sealing effect to be poor or even fail.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a motor stator coil outlet structure, has solved the wiring board that current motor stator coil three-phase line assembly used and has leaded to the terminal box volume great and the embedment insulating cement degree of difficulty big, simultaneously easy because of generating heat the problem that the softening influences the insulating seal effect.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the motor stator coil outlet structure comprises a shell, wherein a stator coil is installed in the shell, the stator coil is connected with an outlet wire, the shell is provided with an outlet hole, the outer surface of the shell is provided with a junction box covering the outlet hole, an insulator which is internally communicated is installed in the outlet hole, a conductive body is installed in the insulator, the outlet wire is connected with an end of the conductive body which is located in the shell, a cable connector is arranged in the junction box, and the cable connector is connected with an end of the conductive body which is located in the junction box.

Preferably, a first through hole and a second through hole which are communicated with each other are arranged in the insulator, the sectional area of the first through hole is smaller than that of the second through hole, the conductor comprises a first connecting body and a second connecting body which are connected with each other, and the first connecting body and the second connecting body are correspondingly attached to the first through hole and the second through hole respectively.

Exemplarily, the first through hole is a square hole, and correspondingly, the first connecting body is a cuboid; the second through hole is a circular hole, and correspondingly, the second connecting body is cylindrical.

Furthermore, an outgoing line fixing groove is formed in the end face of the second connecting body, and the end of the outgoing line is fixed in the outgoing line fixing groove.

Furthermore, an observation hole communicated with the outgoing line fixing groove is formed in the side face of the second connecting body.

Further, the second connector surface is provided with the seal groove, the seal groove endotheca is equipped with the sealing washer.

Further, the outer surface of the second connecting body is provided with a stress relief groove.

Furthermore, the end face of the first connecting body is attached with a conductive copper bar, and the cable joint is connected with the conductive copper bar.

Further, the connecting device also comprises a fastener used for fixing the conductive copper bar on the end face of the first connecting body.

Illustratively, a crimping threaded hole is formed in the end face of the first connecting body, and the fastener comprises a crimping bolt which penetrates through the conductive copper bar and is screwed into the crimping threaded hole.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

1. the utility model utilizes the insulator and the conductor to fix and connect the outgoing line of the stator coil of the motor, thereby eliminating the arrangement of a wiring board in the motor wiring box and further reducing the volume of the wiring box; moreover, because the insulator structure is fixed, high-quality insulating materials can be selected for manufacturing, so that the problems that the encapsulating quality difference is large and part of the insulating adhesive is easy to soften due to high temperature in the using process to cause the poor insulating sealing effect in the encapsulating mode of the insulating adhesive are solved;

2. the insulator and the conductor are correspondingly arranged into two-section structures with different shapes, so that the phenomenon that the conductor rotates in the insulator to influence the fixing effect is avoided;

3. through set up the seal groove on the electric conductor, establish the sealing washer in the seal groove endotheca and realized the sealed effect between electric conductor and the insulator, avoided steam etc. to get into the motor through the terminal box inside and cause the harm to the motor.

Drawings

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

fig. 2 is a structural sectional view of an insulator according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an electrical conductor according to an embodiment of the present invention;

fig. 4 is a structural sectional view of an electrical conductor according to an embodiment of the present invention.

In the figure: 1. a housing; 2. a stator coil; 3. an outgoing line; 4. an end cap; 5. an insulator; 6. an electrical conductor; 7. a junction box; 8. a wiring copper bar; 9. crimping the bolt;

51. a first through hole; 52. a second through hole;

61. a first connecting body; 62. a second connector;

611. crimping the threaded hole; 621. an outgoing line fixing groove; 622. a sealing groove; 623. a seal ring; 624. removing the stress trench; 625. and (6) observing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present embodiment discloses a motor stator coil outlet structure, which includes a casing 1, a stator is installed in the casing 1, a stator coil 2 is wound on the stator, the stator coil 2 is connected with an outlet wire 3, an end position of the casing 1 is provided with an end cover 4, the end cover 4 performs sealing protection on a component in the casing, the casing 1 is provided with an outlet, and an outer surface of the casing 1 is provided with a junction box 7 covering the outlet. In this embodiment, an insulator 5 with a through hole is installed in the outlet hole, a conductor 6 is installed in the insulator 5, that is, the conductor 6 is sleeved in the insulator 5 and tightly attached to the insulator 5, the outlet 3 is connected to an end of the conductor 6 located in the casing 1, a cable connector (not shown) is installed in the junction box 7, and the cable connector is connected to an end of the conductor 6 located in the junction box 7.

The utility model discloses a motor stator coil outlet structure can correspond the setting according to stator coil's the quantity of being qualified for the next round of competitions, in this embodiment, stator coil has the three-phase lead-out wire, then the utility model discloses a outlet structure correspondence is provided with threely.

The insulator 5 of the embodiment is clamped in the wire outlet hole, the insulator 5 is provided with a through hole, the conductor 6 is arranged in the through hole of the insulator 5, one end of the two ends of the insulator 5 and the conductor 6 is positioned in the shell 1, the other end of the two ends of the insulator 5 and the conductor 6 is positioned in the junction box 7, the lead-out wire 3 of the stator coil 2 is connected with one end of the conductor 6, the lead-out wire 3 can be fixed, the conductor 6 can be connected with a cable joint in the junction box 7, and therefore the purpose of realizing the electric connection between the lead-out wire of the stator coil 2 and the junction box 7 is achieved, and the insulator 5 is sleeved on the outer surface of the conductor 6, so that the purpose of insulating between the lead-out wire 7 and the wire outlet hole of the shell 1 is achieved. Compared with the prior art that the outgoing line 3 is connected by the wiring board, the outgoing line 3 is fixed by the fixing clamping plate, the outgoing line 3 is prevented from being in contact with the outgoing line hole, or the encapsulation quality is unstable when the outgoing line hole is encapsulated by the insulating glue under the requirement of insulating sealing, and the insulating and fixing effects are easily influenced by high-temperature softening in the operation process of the motor; in the embodiment, the insulator is arranged at the wire outlet, part of the structure of the insulator is positioned in the shell 1, and the conductor 6 is adopted for conducting electricity, so that the structure of a wiring board is omitted, the volume of the wiring board can be reduced, and the motor assembly is miniaturized; meanwhile, the insulator 5 can be prefabricated in advance, so that the material of the insulator can be a high-temperature-resistant insulating material, and the structure of the insulator 5 is not easy to deform and has excellent insulating property due to good consistency of batch production, so that long-term stable operation of the motor is ensured.

Preferably, referring to fig. 2, the insulator 5 is provided with a first through hole 51 and a second through hole 52 which are communicated with each other, and the cross-sectional area of the first through hole 51 is smaller than that of the second through hole 52. Referring to fig. 3 and 4, the conductive body comprises a first connecting body 61 and a second connecting body 62 which are connected with each other, and the first connecting body 61 and the second connecting body 62 are respectively and correspondingly attached and arranged in the first through hole 51 and the second through hole 52.

The shapes of the first through hole 51 and the second through hole 52 are adapted and matched with the shapes of the first connecting body 61 and the second connecting body 62, the shapes of the first through hole 51 and the second through hole 52 can be the same or different, as long as the orthographic sectional areas of the first through hole 51 and the second through hole 52 are different, so that the electric conductor 6 is a two-section structure formed by the corresponding first connecting body 61 and the corresponding second connecting body 62, the electric conductor 6 is arranged through the two-section through hole structure, the electric conductor 6 cannot pass through the through hole with the smaller sectional area, the limiting effect on the electric conductor 6 is realized, and the electric conductor is prevented from being separated from the through hole of the insulator 5.

Referring to fig. 2, preferably, the first through hole 51 of the present embodiment is a square hole, and correspondingly, the first connecting body 61 is a cuboid; the second through hole 52 is a circular hole, and correspondingly, the second connecting body 62 is cylindrical.

This embodiment sets up first through-hole 51 to the quad slit, sets up second through-hole 51 to the circular port, and the diagonal length of quad slit is less than the diameter of circular port, installs conductor 6 behind first through-hole 51 and second through-hole 52, except can carrying on spacingly to conductor 6, because the shape of quad slit, can also make conductor 6 can not take place to rotate in insulator 5 simultaneously, realizes the fixed of conductor 6 mounted position. Of course, the first through hole 51 and the second through hole 52 may also be through holes of other shapes, for example, polygonal shapes such as oval, triangle, etc., and the shapes of the two may be the same or different, and it is only necessary to ensure that the two are through and the cross-sectional shape and size can limit the conductor 6 and prevent it from freely rotating in the through hole of the insulator 5.

Further, referring to fig. 1 and 4, a lead-out wire fixing groove 621 is provided on an end surface of the second connecting body 62, and an end of the lead-out wire 3 is fixed to the lead-out wire fixing groove 621. Specifically, in this embodiment, the end of the lead wire 3 is welded to the lead wire fixing groove 621, so that the stable connection between the two is realized, and the lead wire 3 is prevented from being separated from the lead wire fixing groove 621 in the use process.

Further, referring to fig. 3, the second connection body 62 is provided at a side thereof with an observation hole 625 communicating with the lead wire fixing groove 621. Through setting up observation hole 625, can conveniently observe the degree of depth and the firm condition of welding that lead-out wire 3 penetrated in lead-out wire fixed slot 621.

Further, referring to fig. 1 and 4, a sealing groove 622 is formed on an outer surface of the second connecting body 62, and a sealing ring 623 is sleeved in the sealing groove 622. Utilize seal groove 622 and sealing washer 623, realized the sealed between electric conductor 6 and the insulator 5, avoid steam etc. to enter into the motor through the clearance between electric conductor 6 and the insulator 5 inside, cause the damage to the motor, the sealing washer 623 makes the assembly between electric conductor 6 and the insulator 5 inseparabler simultaneously, avoids the two to take place relative displacement.

Further, referring to fig. 3 and 4, the outer surface of the second connecting body 62 of the present embodiment is provided with a stress relief groove 624. The stress relief groove 624 can relieve the welding stress when part of the lead-out wires 3 are welded with the electric conductor 6, so that the structure of the electric conductor 6 is more stable.

Further, referring to fig. 1, the end surface of the first connecting body 61 is attached with a conductive copper bar 8, and the cable connector is connected to the conductive copper bar 8. The conductive copper bar 8 can be used for conveniently connecting the conductive body 6 with a cable joint in the junction box 7.

Further, the present embodiment further includes a fastener, and the copper busbar 8 is fixed to the end surface of the first connecting body 61 by the fastener. Thereby make the connection of copper busbar 8 and electric conductor 6 more stable, avoid breaking away from or the virtual normal operating that connects the influence motor between copper busbar 8 and the electric conductor 6. Illustratively, in the present embodiment, a crimping threaded hole is provided on the end surface of the first connecting body 61, and the fastener is specifically a crimping bolt 9, and the fastening installation of the conductive copper bar 8 is realized by screwing the crimping bolt 9 into the crimping threaded hole through the fixing hole of the conductive copper bar 8.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a motor stator coil outlet structure, includes the casing, install stator coil in the casing, stator coil is connected with the lead-out wire, its characterized in that, be provided with the wire hole on the casing, the casing surface is provided with the terminal box that covers the wire hole, install the inside insulator that link up in the wire hole, install the electric conductor in the insulator, the lead-out wire connect in the end that the electric conductor is located the casing, be provided with the cable joint in the terminal box, the cable joint connect in the end that the electric conductor is located in the terminal box.

2. The winding structure of the stator coil of the motor as claimed in claim 1, wherein the insulator has a first through hole and a second through hole, the first through hole has a smaller cross-sectional area than the second through hole, the conductor comprises a first connecting body and a second connecting body connected to each other, and the first connecting body and the second connecting body are respectively fitted into the first through hole and the second through hole.

3. The winding structure of the motor stator coil according to claim 2, wherein the first through hole is a square hole, and correspondingly, the first connecting body is a cuboid; the second through hole is a circular hole, and correspondingly, the second connecting body is cylindrical.

4. The winding structure of the stator coil of the motor as claimed in claim 2 or 3, wherein an end face of the second connecting body is provided with an outgoing line fixing groove, and an end of the outgoing line is fixed in the outgoing line fixing groove.

5. The winding structure of the stator coil of the motor as claimed in claim 4, wherein the second connection body has a viewing hole formed at a side thereof to communicate with the winding-out wire fixing groove.

6. The winding structure of the motor stator coil according to claim 2 or 3, wherein a sealing groove is formed on an outer surface of the second connecting body, and a sealing ring is sleeved in the sealing groove.

7. The stator coil outlet structure of an electric machine according to claim 2 or 3, wherein the outer surface of the second connector is provided with a stress relief groove.

8. The winding structure of the stator coil of the motor as claimed in claim 2 or 3, wherein the first connecting body has a copper bar attached to an end surface thereof, and the cable connector is connected to the copper bar.

9. The winding structure of the stator coil of the electric machine as claimed in claim 8, further comprising a fastener for fixing the copper busbar to the end surface of the first connector.

10. The winding structure of the motor stator coil according to claim 9, wherein a crimping threaded hole is formed on an end surface of the first connecting body, and the fastening member includes a crimping bolt that is screwed into the crimping threaded hole through the conductive copper bar.