CN217063432U - Electric machine - Google Patents

Abstract

The utility model provides a motor is applied to motor technical field, and this motor includes: casing, stator, rotor. Wherein the stator includes: the insulator is arranged on the stator core, and a winding is wound on the insulator; the positioning column is arranged on the axial side of the insulator, which is parallel to the motor, and is used for limiting the winding; the conductive connecting piece is arranged on the axial side of the insulator, which is parallel to the motor, and has a set distance with the positioning column; the end of the winding wound on the insulator extends to the conductive connector, and the end of the winding surrounds the periphery of the conductive connector to form at least one coil and is conducted with the conductive connector; a groove is formed between the positioning column and the conductive connecting piece of the insulator; the end part of the winding is limited by the positioning column and then extends to the conductive connector from the groove; the surface of the conductive connecting piece and the position of the groove close to the conductive connecting piece are coated with insulating materials. The motor can reduce motor faults caused by winding corrosion.

Description

Electric machine

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to motor.

Background

With the rapid development of the power industry, the consumption of copper and aluminum products is increased year by year, the copper and aluminum products are widely applied to the fields of electric power, chemical engineering, refrigeration, transportation, aerospace and the like, the copper price is raised due to the increasing exhaustion of copper resources, and the trend that copper is replaced by aluminum is formed.

Because aluminum is an active metal, when an aluminum wire is used as a winding material, the paint coat needs to be polyurethane (composite nylon) paint, so that the aluminum wire has poor direct weldability, and a special soldering flux is needed when the paint coat is removed.

Most motor stator coats scaling powder mechanism now, all there is certain drawback when using, and in original stator coating tin technology, all need coat the scaling powder earlier and coat tin later, the meaning of coating scaling powder is can help and promote the welding process in welding technology, the guard action has simultaneously, the mode of traditional coating scaling powder is in stator stitch embedding scaling powder, but because the liquid level of scaling powder is uneven, can lead to coating the scaling powder inhomogeneous, the final messenger takes place the desoldering easily when coating tin, the condition that the welding spot is not of uniform size takes place, and in the use, the scaling powder can volatilize, the liquid level descends, lead to the highly inconsistent of coating scaling powder, influence the qualification rate of product.

In addition, when materials such as aluminum wires are adopted as winding materials, after the soldering flux is coated, when the tin is continuously coated, the temperature of the coated soldering flux is high, the coated soldering flux is quickly vaporized, the vaporized soldering flux moves along the length direction of the aluminum wires, the soldering flux has a destructive effect on the insulating layer materials on the surfaces of the aluminum wires, and the insulating layers on the surfaces of the aluminum wires are destroyed, so that the aluminum wires are easily oxidized and corroded by moisture in the air and the like, and finally the motor fault is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a motor can be solved insulating layer material welding of wire winding material and destroyed, and then leads to the wire winding material to be corroded the problem that leads to the motor trouble by the corrosive medium in the air. The motor includes but is not limited to: a housing; a stator disposed within the housing; a rotor disposed within the stator, the rotor configured to rotate relative to the stator core about an axial direction of the motor; the stator includes a stator core; an insulator disposed on the stator core, wherein a winding is wound on the insulator, and the insulator is used for insulating the winding from the stator core; the positioning column is integrally formed with the insulator, is arranged on the axial side of the insulator parallel to the motor and is used for limiting the winding; the conductive connecting piece is arranged on the axial side of the insulator, which is parallel to the motor, at least partially arranged in the insulator and provided with a set distance with the positioning column; the end part of the winding wound on the insulator extends to the conductive connecting piece, and the end part of the winding forms at least one coil around the periphery of the conductive connecting piece and is conducted with the conductive connecting piece; a groove is formed between the positioning column and the conductive connecting piece of the insulator; the end part of the winding wound on the insulator is limited by the positioning column and then extends to the conductive connecting piece from the groove; and the surface of the conductive connecting piece and the position of the groove close to the conductive connecting piece are coated with insulating materials.

In some exemplary embodiments of the present invention, the end of the winding is limited by the connection between the positioning column and the insulator, and extends from the first side of the groove to the second side of the groove to the conductive connecting member, wherein the depth of the groove at the first side is less than the depth at the second side.

In some exemplary embodiments of the present invention, the length of the groove is greater than or equal to half of the distance between the positioning column and the conductive connecting member.

In some exemplary embodiments of the present invention, the winding includes a conductive material having an insulating layer on a surface thereof.

In some exemplary embodiments of the invention, the conductive material comprises copper or aluminum.

In some exemplary embodiments of the invention, the conductive connection comprises a detachable connection structure.

In some exemplary embodiments of the invention, the detachable connection structure comprises a pin and a socket.

In some exemplary embodiments of the present invention, the conductive connecting member has at least a plurality of pieces.

According to the utility model discloses an embodiment is through setting up the recess to at the position coating insulating material of the electrically conductive connecting piece that is close to of recess, be the insulating material cover the wire winding can effectively avoid the wire winding by the problem of the corrosive medium oxidation corrosion in the air.

Drawings

Fig. 1 is a schematic view of a structure of an insulator and a conductive connecting member of a prior art motor;

fig. 2 is a schematic structural diagram of the motor of an embodiment of the present invention with the housing and the rotor removed;

FIG. 3 is a schematic top view of the structure of FIG. 2;

FIG. 4 is an enlarged view of a portion of area A of FIG. 2;

FIG. 5 is a schematic view of the conductive connection provided in region A of FIG. 2;

fig. 6 is a schematic view of the conductive connector and the groove of fig. 5 with an insulating material disposed on the surface thereof.

[ reference numerals ]

Insulator 10, winding 20, conductive connector 30, stator core 100, insulator 200, winding 210, coil 211, positioning post 300, conductive connector 400, groove 500, and insulating material 600.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention. It is to be understood that the embodiments described are some, not all embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the drawings, the second description of the same reference numerals for the same components and the description of the components not directly related to the present invention may be omitted or simplified when they may obscure the understanding of the present invention. In addition, the shapes and sizes of the respective members in the drawings do not reflect actual sizes and proportions, and only illustrate the contents of the embodiments of the present invention.

The following orientations and positional relationships are merely for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connecting" are to be interpreted broadly, and may be, for example, mechanical or electrical; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Fig. 1 is a schematic view of the structure of an insulator and a conductive connecting member of a prior art motor. In the prior art, as shown in fig. 1, an insulator 10 is disposed on a stator core of a motor, a winding 20 is wound on the insulator 10, and the winding 20 is wound on the insulator to form a winding for forming a magnetic field to drive a rotor of the motor to rotate. One end of the wire 20 is electrically connected to the conductive connector 30. In the process of electrically connecting the wire 20 to the conductive connection member 30, it is necessary to first coat the conductive connection member 30 with the flux and then coat the surface of the conductive connection member 30 with the tin material to achieve soldering between the conductive connection member 30 and the wire 20. After the soldering flux is coated, when the tin material is continuously coated, because the temperature of the tin material is high, the soldering flux moves along the arrow direction in fig. 1, that is, moves along the length direction of the winding 20, the soldering flux has a corrosive effect on the insulating layer or the protective layer on the surface of the winding 20, and then after the winding 20 and the conductive connecting piece 30 are welded, the insulating layer or the protective layer on the surface of the partial winding far away from the conductive connecting piece 30 along the length direction of the winding 20 is damaged, and in the using process, the winding 20 is corroded or oxidized by a corrosive medium in the air, and finally, the motor fails.

Therefore, the utility model discloses a junction to wire winding and electrically conductive connecting piece improves, can effectively solve the above-mentioned problem among the prior art.

The following explains a motor according to an embodiment of the present invention:

the utility model discloses a motor of embodiment includes: casing, stator, rotor. The structure of the shell and the structure of the rotor are the same as those of the existing motor.

Fig. 2 is a schematic structural diagram of the motor of an embodiment of the present invention, in which the housing and the rotor are removed. Fig. 3 is a schematic top view of the structure of fig. 2.

The stator core, the insulator, the winding, the positioning column, and the conductive connecting member according to the present invention will be described in detail with reference to fig. 2 and 3.

In an embodiment of the present invention, the stator is disposed in the housing. A rotor is disposed within the stator, the rotor configured to rotate relative to the stator core about an axial direction of the electric machine. For example, the axis of the motor coincides with the axis of the stator core. The stator may include a stator core, an insulator, a winding, a positioning post, and a conductive connector.

As shown in fig. 2 and 3, the stator core 100 of the present embodiment has a space in the middle to accommodate a rotor. The insulator 200 is provided on the stator core 100, the winding 210 is wound on the insulator 200, and the insulator 200 serves to insulate the winding 210 from the stator core 100. The windings 210 on the insulator 200 form the windings of the motor for driving the rotor of the motor in rotation by means of an alternating current.

The positioning post 300 is disposed on an axial side of the insulator 200 parallel to the motor for limiting the winding 210. The positioning posts 300 may, for example, be included on a first side of the insulator parallel to the axial direction of the motor and/or a second side parallel to the axial direction of the motor, the first side and the second side being oppositely disposed.

The conductive connector 400 is disposed on the axial side of the insulator 200 parallel to the motor, at least partially disposed within the insulator 200, and at a set distance from the positioning post 300. For example, the conductive connector 400 is disposed on the same side of the insulator 200 as the positioning post 300, including on a first side of the insulator parallel to the axial direction of the motor and/or on a second side of the insulator parallel to the axial direction of the motor. In this embodiment, one conductive connecting member 400 may be disposed for each winding, that is, the motor of this embodiment includes a plurality of conductive connecting members. In an alternative embodiment, the number of the conductive connecting members may be set according to actual requirements.

The end of the winding 210 wound on the insulator 200 extends to the conductive connector 400, and the end of the winding 210 forms at least one coil 2ll around the outer circumference of the conductive connector 400 and is electrically connected to the conductive connector 400. The wire wound on the insulator 200 forms a winding, and the end of the wire extends to and is in conduction with a conductive connector for receiving an electric signal of an alternating current.

Illustratively, the end of the wire is formed into at least one coil around the outer circumference of the conductive connector, and by forming the at least one coil, the contact area of the wire with the conductive connector is increased, which facilitates the transmission of electrical signals.

In the embodiment of the present invention, a groove 500 is provided between the positioning column 300 and the conductive connecting member 400 of the insulator 200 for coating an insulating material. After the end of the winding 210 is limited by the positioning pillar, it extends from the groove 500 to the conductive connector 400. An insulating material 600 is coated on the surface of the conductive connector 400 and at the position of the groove adjacent to the conductive connector.

In the embodiment of the present disclosure, the winding of the winding 210 and the conductive connector 400 may be performed, for example, after the winding 210 is wound on the insulator 200 to form a winding, the connection position of the end positioning pillar 300 of the winding 210 and the insulator 200 is limited, and then the winding continues to pass through the groove 500, and at least one coil is formed on the periphery of the conductive connector 400, so as to achieve electrical connection with the conductive connector. Or, one end of the winding 210 forms at least one coil on the periphery of the conductive connector 400 to realize the electrical connection with the conductive connector, and then, the winding 210 is limited from one side of the conductive connector through the connection part of the positioning column 300 and the insulator 200, and then the winding is wound on the insulator 200 to form the winding. In alternative embodiments, the winding manner may be performed in different orders.

According to the utility model discloses an embodiment, through setting up the recess for when wire winding and electrically conductive connecting piece weld, the scaling powder removes in the recess along wire winding length direction, and corrodes the insulating layer or the protective layer on the wire winding surface that lie in the recess, in the position of keeping away from electrically conductive connecting piece, because influence such as heat scatters and disappears, can not receive the corruption of scaling powder at the insulating layer or the protective layer on the wire winding surface of keeping away from electrically conductive connecting piece. Further through the surface at the electrically conductive connecting piece and at the position of recess near the electrically conductive connecting piece coating insulating material to pass through insulating material with the region of being corroded by the scaling powder of wire winding and cover, realize separating the wire winding with the corrosive medium in the air, avoid the motor trouble scheduling problem that the corrosive medium in the air leads to the wire winding corruption.

Fig. 4 is a partially enlarged view of the area a in fig. 2. Fig. 5 is a schematic view of the arrangement of the conductive connection member in the area a in fig. 2. Fig. 6 is a schematic view of the conductive connector and the groove of fig. 5 with an insulating material disposed on the surface thereof.

In the embodiment of the present invention, the end of the winding 210 is limited by the connection between the positioning column 300 and the insulator 200, and extends from the first side X of the groove 500 to the second side Y of the groove to the conductive connector 400, and the depth of the groove 500 at the first side X is smaller than the depth at the second side Y.

In the embodiment of the present invention, the length of the groove is greater than or equal to half of the distance between the positioning column and the conductive connecting member. Therefore, the insulating layer or the protective layer on the surface of the winding can be covered by the insulating material covered on the groove under the condition that the insulating layer or the protective layer is corroded by the soldering flux, so that the protection of the winding is realized, and the winding is prevented from being corroded by a corrosive medium in the air.

In the present embodiment, the depth of the groove 500 is related to the diameter of the winding 210, and in practical use, the depth and the length of the groove 500 are adjusted according to practical requirements.

As shown in fig. 4 to 6, the insulator 200 is provided with the positioning posts 300 and the grooves 500. The end of the winding 210 is limited from the connection of the positioning post and the insulator, and then extends from the first side X of the groove 500 to the second side Y of the groove 500, and forms at least one coil 211 around the conductive connector 400.

After the winding 210 forms at least one coil 211 around the conductive connecting member 400, flux is applied to the coil 211 and the conductive connecting member 400, the conductive connecting member 400 and the coil 211 are soldered after the flux is applied, and then, as shown in fig. 6, an insulating material 600 is applied to the surface of the conductive connecting member 400 and at a position of the groove 500 adjacent to the conductive connecting member 400. The insulating material 600 covers an area of the coil 211 contacting the conductive connector 400 while the insulating material 600 covers a portion of the groove 500 and also covers the winding 210 positioned in the groove 500, thereby protecting the winding 210 from the corrosive medium in the air.

In the embodiment of the present invention, the conductive connecting member includes a detachable connecting structure, such as a pin and a socket, but not limited thereto, and in other examples, the conductive connecting member may also be a sheet-shaped conductive connecting member, a block-shaped conductive connecting member, or the like. The conductive connection may be any device that achieves an electrical connection between the wire wrap and the circuit board.

And the stator iron core is provided with an insulator, and the insulator is used for winding a winding to form a winding. The winding includes a conductive material having an insulating layer on a surface thereof, and the conductive material includes copper or aluminum, and specifically, the winding may be, for example, a copper enameled wire or an aluminum enameled wire. The winding wire may be, for example, a wire made of an aluminum alloy as a main material, which is wound around the stator core via an insulator. In addition, the specification and winding manner of the winding may be changed according to the performance requirements or characteristics of the motor.

When the conductive connecting piece is a contact pin, the contact pin is mainly made of a conductive material, and the contact pin is in a long strip needle shape. The pins are secured to the insulator, and in this patent, at least a portion of the pins are located within the insulator and the remainder are located outside the insulator.

In this embodiment, the flux used to connect the conductive connection member and the coil formed by the windings may be a chemical that facilitates soldering. In solder, it is an indispensable auxiliary material, and its role is extremely important. For example, the flux contains rosin as a main component, and the rosin is decomposed by tin at about 260 ℃.

The soldering flux can help and promote the soldering process in the soldering process, and has the chemical substances of a protective effect and an oxidation reaction prevention effect. The main function of the flux is to remove oxides and reduce the surface tension of the welded material. The embodiment of the utility model provides an in, when electrically conductive connecting piece adopted the aluminium wire as the wire winding material, because aluminium is active metal, the surface of aluminium forms fine and close oxide film immediately in dry air, makes aluminium can not further oxidize and can be water-fast, and the direct welding performance of aluminium is relatively poor moreover to this need adopt dedicated scaling powder when going the coating. After the conductive connecting piece is soaked in the soldering flux, the soldering flux and an insulating layer on the surface of an aluminum wire wound on the conductive connecting piece are subjected to chemical reaction, and the soldering flux is heated and tin is added to damage a winding paint skin. Therefore, the utility model discloses at recess and conductive connecting piece's surface coating insulating material to prevent that the wire winding surface from receiving the corruption of corroding the medium in the air.

The embodiment of the utility model provides an in, the soldering tin in-process, earlier soak electrically conductive connecting piece and the scaling powder for the coil that is formed by the wire winding, the scaling powder is heated and adds the tin, the scaling powder can gasify rapidly and climb along extending aluminium line length direction when the wicking in the welding process (wicking temperature 270 degrees above), there is the scaling powder on the enamel of the wire winding (for example, the aluminium line) of final soldering tin position top to exist, can destroy insulating layer (for example, the insulating varnish) on the wire winding among the welding process, if the here does not protect and targets in place, be corroded by the moisture oxidation in the air easily.

To this, the utility model discloses after the welding, insulating material coats to the position of electrically conductive connecting piece and recess: in the welding process, the aluminum wire material is oxidized and corroded by moisture in the air, and in order to protect the aluminum wire structure better, the aluminum wire structure is coated with insulating material to insulate the corroded part of the surface of the paint coat.

So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly understand the present invention.

It is to be understood that the implementations shown and described in the drawings and in the description are not to be considered in a limiting sense, since they are well known and will not be described in detail. In addition, the above definitions of the respective components are not limited to the specific structures and shapes mentioned in the embodiments, and those skilled in the art may easily modify or replace them.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. An electric machine comprising:

a housing;

a stator disposed within the housing;

a rotor disposed within the stator, the rotor configured to rotate relative to the stator about an axial direction of the motor;

the stator includes:

a stator core;

an insulator disposed on the stator core, wherein a winding is wound on the insulator, and the insulator is used for insulating the winding from the stator core;

the positioning column is integrally formed with the insulator, is arranged on the axial side of the insulator parallel to the motor and is used for limiting the winding;

the conductive connecting piece is arranged on the axial side of the insulator, which is parallel to the motor, at least partially arranged in the insulator, and has a set distance with the positioning column; the end part of the winding wound on the insulator extends to the conductive connecting piece, and the end part of the winding forms at least one coil around the periphery of the conductive connecting piece and is conducted with the conductive connecting piece;

the method is characterized in that:

a groove is formed between the positioning column and the conductive connecting piece of the insulator;

the end part of the winding is limited by the positioning column and then extends to the conductive connecting piece from the groove;

and the surface of the conductive connecting piece and the position of the groove close to the conductive connecting piece are coated with insulating materials.

2. The electric machine of claim 1, wherein: the end part of the winding is limited at the joint of the positioning column and the insulator and extends to the conductive connecting piece from the first side of the groove to the second side of the groove, wherein the depth of the groove on the first side is smaller than that on the second side.

3. The electric machine of claim 2, wherein: the length of the groove is larger than or equal to half of the distance between the positioning column and the conductive connecting piece.

4. The electric machine of claim 1, wherein: the winding includes a conductive material having an insulating layer on a surface thereof.

5. The electric machine of claim 4, wherein: the conductive material comprises copper or aluminum.

6. The electric machine of claim 1, wherein: the conductive connector includes a detachable connection structure.

7. The electric machine of claim 6, wherein the detachable connection structure comprises a pin and a socket.

8. The electric machine of claim 1, wherein: the conductive connecting piece is provided with at least a plurality of pieces.

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