KR20110128626A - Stator assembly for 3-phase motor - Google Patents

Abstract

PURPOSE: A stator assembly for a 3-phase motor is provided to have ground fixtures for wiring corresponding to 3-phase wiring objects, thereby drastically simplifying the wiring structure of the wiring objects. CONSTITUTION: A ground fixture(4) for U shaped wiring is arranged on one side of a core body. A ground fixture(2) for V shaped wiring includes a V shaped ground unit. The ground fixture for V shaped wiring is wound if the ground fixture for V shaped wiring contacts one of both ends of a V shaped wiring object. A ground fixture(6) for W shaped wiring includes a W shaped ground unit. The W shaped ground unit is wound if the W shaped ground unit contacts one of both ends of a W shaped wiring object.

Description

Stator assembly for 3-phase motor

The present invention relates to a stator assembly for a three-phase motor in which the coil connection structure of three-phase (U-phase, V-phase, W-phase) winding bodies is greatly improved.

In general, a motor is a motor that generates rotational power by converting electrical energy into mechanical energy, and is widely used as a driving source for various devices that require rotational force.

There are many types of the motors, but three-phase AC motors are widely used in devices requiring relatively large rotational force and torque.

The main components of the three-phase motor, as is well known, are a housing, a stator provided within the housing and supplied with electricity to generate electrical energy (also referred to as a "stator"), and the electrical energy of the stator. It consists of a rotor (also called a "rotator") that converts mechanical energy and transmits rotational power to the drive shaft side.

Among the main components of the three-phase motor, in particular, the stator serves to drive the rotor by forming a magnetic field by making an electromagnet with electrical energy, and in a conventional manner on the core side to enable driving with three-phase electric power. It is manufactured by winding the coil to form three-phase windings (eg, U, V, W).

This winding and connection work is wound around the core body to form three-phase (U, V, W) windings, and in particular, by connecting the coils of the respective windings to enable driving with three-phase power Final wiring is very important.

Most of these connections are made by manually twisting the ends of the coils of the windings by hand.

However, such a manual connection method is not only difficult because of the manual twisting of the coil ends of each of the windings, but also requires an excessive time due to the complicated process.

In addition, when both ends of the coils wound by the core body are manually connected, an abnormal connection state that may inadvertently connect any part of the connection parts of the coils may cause a short circuit, or cause a short. Can be wired as

In particular, such an abnormal wiring state may be a factor that causes a poor driving of the stator and greatly reduces the operation reliability and safety of the product.

Therefore, the present invention has been proposed to solve the above problems,

It is an object of the present invention, in particular, to provide a stator assembly for a three-phase motor having a wiring structure that greatly improves problems that may occur when connecting coils of three-phase windings (U, V, and W phases).

In order to achieve the object as described above,

In the stator for a three-phase motor composed of a U-phase winding, a V-phase winding, and a W-phase winding formed by winding a coil around the core body,

Among the windings of each phase, any one of both ends of the coil of the U-phase winding has a U-phase grounding portion formed to be connected while being grounded in a contact state, and is connected to the U-phase connection disposed on one side of the core body. Earth;

A V-phase connection grounding hole having a V-phase grounding portion formed so that any one end of both ends of the coil of the V-phase winding body is grounded in a contact state at a point corresponding to the U-phase connection grounding hole;

A W-phase connection grounding hole having a W-phase grounding portion formed so that any one end of both ends of the coil of the W-phase winding body is grounded in a contact state at a point corresponding to the V-phase connection grounding hole;

A neutral connection grounding hole having a neutral point grounding portion formed so as to be connected between the windings while the other ends of the coils of the windings of the phases are grounded in contact with each other;

It provides a stator assembly for a three-phase motor comprising a.

As described above, the present invention includes wiring grounding holes corresponding to windings of three phases (U phase, V phase, and W phase), and the grounding grounding holes are grounded in contact with both ends of the coils of each winding body. In addition, since the ground parts are formed to be connected to enable three-phase driving, the wiring structure of the windings can be greatly simplified.

In particular, according to the structure of the connection grounding holes, it is possible to actively improve the problems that may occur when manufacturing the stator in the conventional connection method, for example by twisting the coils.

1 is an exploded schematic view of main components of a stator assembly for a three-phase motor according to an embodiment of the present invention.
2 is a view for explaining the detailed structure and arrangement of the windings of the stator assembly for a three-phase motor according to an embodiment of the present invention.
3 to 5 are views for explaining the detailed structure and operation of the connection grounding holes of the stator assembly for a three-phase motor according to an embodiment of the present invention.
6 and 7 are views for explaining the structure and operation of the holder portion of the stator assembly for a three-phase motor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

The embodiments of the present invention will be described by those skilled in the art to which the present invention is applicable.

Therefore, since the embodiments of the present invention can be modified in various other forms, the claims of the present invention are not limited to the embodiments described below.

1 is an exploded view illustrating major components of a stator assembly for a three-phase motor according to an embodiment of the present invention. The U-phase winding body U is wound to receive electrical power in a three-phase manner to generate electrical energy. ), A V-phase winding (V), and a W-phase winding (W).

The windings U, V, and W in each phase are wound around the core K in a conventional manner on the core body S side as shown in FIG. 1, for example, to enable four parallel wiring. May be provided in a state.

2 is a view for explaining the detailed structure and arrangement of the windings (U, V, W).

That is, as shown in FIG. 2, the U-phase windings U: U1, U2, U3, and U4, the V-phase windings V: V1, V2, V3, and V4, and the W-phase windings W: W1, Each of W2, W3, and W4) may be provided in an array as shown in the drawing along the circumferential direction.

The coils K wound around the core body S are wound in a state in which both ends K1 and K2 are slightly extended outward from one end of the core body S as shown in FIG. 1. Lose.

In particular, both ends K1 and K2 of the coils K may protrude outward from one end of the core body S, and then finish in a substantially right angle. Then, the grounding force by contact with the wiring grounding holes 2, 4, 6, 8 mentioned later can be raised further.

On the other hand, the stator assembly for a three-phase motor according to an embodiment of the present invention, the U-phase connection grounding sphere (2) for connecting the windings (U, V, W) of each phase, V-phase connection welding The earth 4, the grounding wire 6 for W-phase connection, and the grounding hole 8 for neutral connection are included.

In particular, each of the connection grounding spheres 2, 4, 6, 8 is the end of the coil (K) of the windings (U, V, W) of each phase in a non-twisted manner using the grounding force by contact It is formed in a structure capable of connecting (K1, K2).

3 to 5 are views for explaining the detailed structure and operation of the connection grounding sphere (2, 4, 6, 8).

Referring to FIGS. 3 and 4, each of the connection grounding holes 2, 4, 6, and 8 described above includes a ring (eg, a ring) to correspond to the windings U, V, and W arranged in the circumferential direction. ring) type.

The U-phase connection grounding hole (2) is a U-phase grounding portion for grounding in contact with the ends of the coil (K) wound on the four U-phase windings (U: U1, U2, U3, U4) side It is provided with (A).

The U-phase ground portion (A) is composed of a ground plane (A1). The ground planes A1 may be in contact with either of the ends K1 of the two ends K1 and K2 of the coils K of the U-phase windings U, respectively. A plurality is spaced apart on the side.

Then, the U-phase connection grounding sphere 2 is formed by contacting one end K1 of the coil K of the U-phase winding U, in particular, among the windings U, V, and W described above. It can be easily connected by holding power.

The V-phase connection grounding tool 4 is formed to be slightly larger than the diameter of the U-phase connection grounding tool 2, for example, so that the U-phase connection welding part is formed on one side of the core body S. It may be arranged in a shape surrounding the earth (2).

The V-phase connection grounding hole (4) is a V-phase grounding portion for grounding in contact with the end of the coil (K) wound on the four V-phase windings (V: V1, V2, V3, V4) (B) is provided.

The V-phase ground portion B is composed of ground planes B1, which are either one of both ends K1 and K2 of the coils K of the V-phase windings V. A plurality of spaced apart are formed on the V-phase connection ground (4) side so as to be in contact with the ends (K1), respectively.

Then, the V-phase connection grounding hole 4 is formed by contacting one end K1 of the coil K of the V-phase winding V, among the windings U, V, and W. It can be easily connected by holding power.

The W-phase connection grounding hole 6 is formed to be slightly larger than the diameter of the V-phase connection grounding hole 4, for example, and the V-phase connection grounding hole is formed on one side of the core body S ( 4) It may be arranged in a shape surrounding the circumference.

The W-phase grounding hole 6 is a W-phase grounding portion for grounding in contact with the end of the coil (K) wound on the four W-phase windings (W: W1, W2, W3, W4) (C) is provided.

The W-phase ground portion C is composed of ground planes C1, and the ground planes C1 are either one of both ends K1 and K2 of the coils K of the W-phase windings W. A plurality of spaced apart are formed on the W-phase connection ground (6) side so as to be in contact with the ends (K1), respectively.

Then, the W-phase connection grounding hole 6 is formed by contacting one end K1 of the coil K of the W-phase winding W, among the respective windings U, V, and W. It can be easily connected by holding power.

In addition, the neutral point grounding sphere (8) is formed so as to be able to connect between the respective windings (U, V, W) in particular.

The neutral point grounding sphere 8 is, for example, slightly larger than the diameter of the W-phase grounding sphere 6 so that the W-phase grounding sphere 6 on one side of the core body S. ) May be arranged to surround the circumference.

The neutral point grounding sphere 8 includes a neutral point grounding portion D for grounding in contact with one end of the coil K wound around the respective windings U, V, and W.

The neutral ground part D is composed of ground planes D1, which are different from both ends K1 and K2 of coils K of the respective windings U, V, and W. A plurality of spaced apart is formed on the side of the neutral point grounding sphere 8 so as to be in contact with each of the ends (K2).

Then, the neutral point grounding hole (8), in particular, because the other end (K2) of the coil (K) of the respective windings (U, V, W) can be grounded in contact with each of the windings (U) , V, W) can be connected easily.

Therefore, according to the structure of the above-described connection grounding spheres 2, 4, 6, 8, the three-phase drive while connecting the windings (U, V, W) of each phase in a four parallel arrangement as shown in FIG. This can possibly be wired.

As such, one end K1 of the coils K provided to the windings U, V, and W of each phase may be connected to the U-phase connection grounding 2 or the V-phase connection grounding 4 Alternatively, the wiring structure for connecting the W-phase connection grounding hole 6 and connecting the other end K2 of the coil K to the neutral connection grounding hole 8 is an electric energy in a three-phase manner. Since one of the well-known wiring method for generating a more detailed description will be omitted.

The material of each of the connection grounding holes 2, 4, 6, and 8 is used among the conductors having excellent electrical conductivity. For example, a copper plate can be processed and formed by a conventional method (for example, sheet metal).

In addition, the ground parts A, B, C, and D provided to the respective connection grounding spheres 2, 4, 6, and 8 are both ends of the coil K wound around the core body S side. (K1, K2) may be formed to have ground planes (A1, B1, C1, D1) that can be grounded in a stable contact state.

For example, the ends K1 and K2 of the coils K are placed as shown in FIG. 3 to form the ground planes A1, B1, C1, and D1 in a size and shape that can be grounded in a locked contact state. can do.

Among the connection grounding spheres 2, 4, 6, and 8, the U-phase, V-phase, and W-phase grounding spheres 2, 4, and 6 are three-phase lead wires composed of three strands, as shown in FIG. A connection E is provided for connecting with (R).

For example, the connection part E may include a connection hole E1, and may have a structure in which the end portion of the lead wire R may be inserted into the connection hole E1 to be connected in a conventional manner.

Therefore, according to the structure of the connection grounding spheres (2, 4, 6, 8), the ends (K1, K2) of the coil (K) in a state arranged on one side of the windings (U, V, W) ) And a three-phase drive between the windings (U, V, W) in a grounded manner by a simple contact.

In particular, according to the connection structure and method by the above-described connection grounding spheres (2. 4. 6. 8), for example, although not shown in the drawing, the conventional connection structure and method of twisting each end of the coils In comparison with this, it is possible to quickly and simply connect in a non-twisting manner by using a contact force by a simple contact, thereby greatly improving workability in connection work for stator manufacturing.

Stator assembly for a three-phase motor according to an embodiment of the present invention, further comprises a holder 10 for holding each of the connection grounding sphere (2, 4, 6, 8) in a stable connection state Can be.

6 and 7 are views for explaining the preferred structure and operation of the holder 10.

The holder 10 is formed to hold each of the connection grounding sphere (2, 4, 6, 8) by fitting.

That is, the holder part 10 may be configured as a holder H having fitting grooves H1 corresponding to the connection grounding holes 2, 4, 6, and 8.

The holder H may be formed in, for example, a flange type so as to correspond to the circumference of the connection grounding holes 2, 4, 6, and 8.

The material of the holder H may be used in an insulator (eg, a synthetic resin) having excellent insulation and durability.

Then, the fitting grooves H1 are formed on one side of the holder H as shown in FIGS. 6 and 7, so that the entire circumference (or part) of each of the connection grounding holes 2, 4, 6, and 8 is formed. It is formed to have a shape and size that can be stably fixed by being fitted by an interference fit.

The holder (H), for example, may be provided in a structure that can be fitted to one side of the core body (S).

That is, referring to FIG. 7, fixing grooves H2 may be formed on opposite sides of the fitting holes H1 on both sides of the holder H, as shown in the drawing.

The fixing groove (H2) may be formed so that the one side edge of the core body (S) can be removed, attached while being fitted by an interference fit.

Then, the holder (H) can be easily fixed in a fitting manner to one side of the core body (S) by using the fixing groove (H2).

According to the structure of the holder portion 10, in particular in the state in which the windings (U, V, W) are connected to the grounding holes (2, 4, 6, 8) for the core body (S) work Since it can be held in a stable state on the side, further improved wiring stability can be obtained.

In addition, it is possible to further increase the convenience of work by preventing the flow of the connection grounding holes (2, 4, 6, 8) when performing the connection work.

V: V phase winding U: U phase winding W: W phase winding
2: Grounding wire for V-phase connection 4: Grounding wire for U-phase connection 6: Grounding wire for U-phase connection
8: Neutral connection grounding hole S: Core body C: Coil

Claims (9)

In the stator for a three-phase motor composed of a U-phase winding, a V-phase winding, and a W-phase winding formed by winding a coil around the core body,
Among the windings of each phase, any one of both ends of the coil of the U-phase winding has a U-phase grounding portion formed to be connected while being grounded in a contact state, and is connected to the U-phase connection disposed on one side of the core body. Earth;
A V-phase connection grounding hole having a V-phase grounding portion formed so that any one end of both ends of the coil of the V-phase winding body is grounded in a contact state at a point corresponding to the U-phase connection grounding hole;
A W-phase connection grounding hole having a W-phase grounding portion formed so that any one end of both ends of the coil of the W-phase winding body is grounded in a contact state at a point corresponding to the V-phase connection grounding hole;
A neutral connection grounding hole having a neutral point grounding portion formed so as to be connected between the windings while the other ends of the coils of the windings of the phases are grounded in contact with each other;
Stator assembly for a three-phase motor comprising a. The method according to claim 1,
The U phase ground portion,

Three-phase motor comprising a ground plane formed to provide an area in which either end of both ends of the coil of the U-phase windings can be grounded in contact state at the grounding side for the U-phase connection Stator assembly for. The method according to claim 1,
The V-phase ground portion,
Three-phase motor comprising a ground plane formed to provide an area in which either end of both ends of the coil of the V-phase windings can be grounded in contact state at the grounding terminal for the V-phase connection Stator assembly for. The method according to claim 1,
The W phase ground portion,
Three-phase motor comprising a ground plane formed to provide an area in which either end of the both ends of the coil of the W-phase windings can be grounded in contact state at the grounding side for the W-phase connection Stator assembly for. The method according to claim 1,
The neutral ground portion,
Ground planes formed to provide an area at which the other ends of the coils of the U-phase winding, the V-phase winding, and the W-phase windings can be grounded in contact with each other at the neutral connection grounding side Stator assembly for a three-phase motor, characterized in that configured. The method according to claim 1,
Each connection grounding hole,
Stator assembly for a three-phase motor, characterized in that formed of a conductor. The method according to claim 1,
The stator assembly for the three-phase motor,
The stator assembly for a three-phase motor further comprises a holder portion formed on one side of the core body to hold the respective connection grounding spheres in a state corresponding to the respective winding bodies. The method according to claim 7,
The holder portion,
Consists of a holder having fitting holes to which the grounding holes for each connection are fitted,
The fitting holes,
Stator assembly for a three-phase motor is formed on one side of the holder to hold all or a part of the grounding holes for the connection by fitting. The method according to claim 8,
Wherein the holder comprises:
Stator assembly for a three-phase motor, characterized in that formed by an insulator.

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