KR102513516B1 - Multi-layer hairpin alignment jig for electric vehicle drive motor - Google Patents

Abstract

The present invention relates to a multilayer hairpin alignment jig for an electric vehicle drive motor, and more particularly, to an alignment jig to support insulation paper and coils inserted through slots of a stator core, disposed on the upper and lower surfaces of the stator core. And, a fastening support portion made of support units formed with fastening grooves to be inserted into the insulating paper and the coil, and a fixing jig portion made of jig members for fixing while surrounding the support units disposed on the upper and lower surfaces of the stator core, Consisting of a connection part connecting the jig members, using a fastening support part composed of support units and a fixed jig part for fixing the fastening support part, prevent deformation of the coil and damage to the insulation paper generated during winding work, and to stably support it. has an effect.

Description

Multi-layer hairpin alignment jig for electric vehicle drive motor { Multi-layer hairpin alignment jig for electric vehicle drive motor }

The present invention relates to a multi-layer hairpin alignment jig for an electric vehicle drive motor, and more particularly, by using a fastening support portion made of support units and a fixing jig portion for fixing the fastening support portion, deformation of a coil and breakage of insulating paper occurring during winding work. It relates to a multi-layer hairpin alignment jig for an electric vehicle drive motor designed to prevent and stably support.

In accordance with the enforcement of greenhouse gas reduction regulations, research, development and commercialization of eco-friendly vehicles and related parts are actively progressing in the automobile industry. Research and development is in progress.

In order to improve the fuel efficiency of a vehicle, it is important to improve the efficiency of an existing internal combustion engine, but it is effective to reduce the weight of the vehicle.

A technology of applying a drive motor with higher efficiency than the conventional internal combustion engine to partially or entirely bear the output of the internal combustion engine has been proposed, but in order to operate the drive motor, many additional devices such as inverters, batteries, and LDCs are required. Accessories not only have considerable weight, but also have a problem in that they occupy a large volume.

Automakers and eco-friendly parts manufacturers are developing technologies to reduce the weight and volume of eco-friendly parts to reduce the weight and secure interior space of eco-friendly cars, and maximize the occupancy rate of windings to reduce the weight and volume of drive motors. A possible hairpin winding method has been proposed.

The hairpin winding method includes a process of forming a coil into a specific shape, a process of inserting the coil into a slot of a stator core (stator core), a process of twisting one end of the coil, and the like.

However, this twisting process is a process of bending the coils in opposite directions to wire the coils, and there is a problem in that the core is deformed or the insulating paper is damaged by stressing the stator core during the process.

The foregoing invention refers to the background art in the technical field to which the present invention belongs, and does not mean the prior art.

Patent Publication No. 2017-0029956

The present invention has been made to solve the above conventional problems, and an object of the present invention is to use a fastening support portion made of support units and a fixing jig portion for fixing the fastening support portion to deform the coil and insulating paper generated during winding work. Its purpose is to provide a multi-layer hairpin alignment jig for an electric vehicle drive motor that is designed to prevent damage to and stably support it.

The present invention is an alignment jig to support insulating paper and coils inserted through slots of a stator core, and support units disposed on upper and lower surfaces of the stator core and having fastening grooves formed to be inserted into the insulating paper and the coil. It is characterized in that it consists of a fastening support portion made of, a fixing jig portion made of jig members for fixing while surrounding the support units disposed on the upper and lower surfaces of the stator core, and a connection portion for connecting the jig members.

In addition, the support unit is characterized in that connection grooves are further formed on both side surfaces, so that connection grooves of other support units are connected to support the insulating paper and the coil.

In addition, fastening holes are further formed through the support unit, and a magnetic material is further inserted into the fastening hole so that the support unit is attached and fixed by the magnetic force of the magnetic material.

In addition, the jig member is composed of a pair of cap members formed in a curve, one end of the cap members is hinged, and the other end is bolted and fixed, and the support units disposed on the stator core are seated in an annular shape so that they are fitted It is characterized in that a groove is formed and a coupling groove is formed to be fitted to the stator core.

In addition, elastic support panels are further attached to and fixed to the support unit so as to elastically support the insulating paper and the coil inserted into both inner surfaces of the fastening groove, and the elastic support panel has a tapered end at an end to prevent jamming during insertion. An inclined surface is further formed, and an elastic pressing and fixing means for preventing the support unit from moving by pressing the jig member by elasticity is further provided on the support unit, and the elastic pressing and fixing means is provided on the upper surface of the support unit. An operating groove formed in the operating groove, a pressure coil spring inserted into the operating groove and having one end fixed to an inner surface of the operating groove, a connection panel connected to and fixed to the other end of the pressure coil spring, and one surface of the connection panel. A pressurized elastic panel attached to and pressurizing the jig member by the elasticity of the pressurized coil spring, an elastic friction panel attached to and fixed to the bottom surface of the support unit, and rubbed against the stator core, and an elastic friction panel attached to the elastic friction panel. It is characterized in that it consists of formed stumbling protrusions.

The multilayer hairpin alignment jig for an electric vehicle drive motor according to the present invention uses a fastening support portion composed of support units and a fixing jig portion for fixing the fastening support portion to prevent coil deformation and insulation paper damage that occur during winding work, and to stably It has the effect of supporting it.

1 is a perspective view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
2 is a bottom perspective view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
3 is a plan view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
4 is a front view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
5 is a cross-sectional view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
6 is a partial exploded view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed.
7 is a perspective view showing a support unit of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention.
8 is a plan view showing a support unit of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention.
9 is a plan view showing another embodiment of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention.
10 is a cross-sectional view showing another embodiment of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention.

Since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea.

On the other hand, the meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Expressions in the singular number should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to an embodied feature, number, step, operation, component, part, or these. It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In each step, the identification code (eg, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step clearly follows a specific order in context. Unless otherwise specified, it may occur in a different order than specified. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

1 is a perspective view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 2 is a bottom perspective view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 3 is a plan view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 4 is a front view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 5 is a cross-sectional view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 6 is a partial exploded view showing a state in which a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention is installed. 7 is a perspective view showing a support unit of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention. 8 is a plan view showing a support unit of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention. 9 is a plan view showing another embodiment of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention. 10 is a cross-sectional view showing another embodiment of a multi-layer hairpin alignment jig for an electric vehicle driving motor according to the present invention.

As shown in the drawing, the multilayer hairpin alignment jig 10 for electric vehicle drive motor according to the present invention (hereinafter referred to as a multilayer hairpin alignment jig for convenience of explanation) is inserted through the slots 200 of the stator core 100. An alignment jig that supports the insulating paper 300 and the coil 400 to prevent the coil 400 from being deformed or the insulating paper 300 from being damaged during the twisting process of bending the coil 400 during winding work. As (10), such an alignment jig 10 is composed of a fastening support portion 20, a fixing jig portion 30, and a connection portion 40.

The fastening support part 20 is disposed on the upper and lower surfaces of the stator core 100, and is inserted into the insulating paper 300 and the coil 400, and also inserts the inserted insulating paper 300 and the coil 400. It consists of support units 21 formed with fastening grooves 211 to support them.

In the stator core 100, slots 200 having a hole structure are formed in an annular shape while maintaining a predetermined interval therethrough. The stator core 100 is formed in a hollow tubular structure.

The support unit 21 is made of a metal material, and one end is formed with a fastening groove 211 so that the insulating paper 300 and the coil 400 are inserted.

The support units 21 are disposed in an annular shape on the upper and lower surfaces of the stator core 100, which are arranged in contact with each other and formed in a tubular structure.

The support unit 21 is formed in a fan shape as shown in the drawing.

Here, roller grooves are further formed on both inner surfaces of the fastening groove 211, a guide roller is rotatably fastened to the roller groove, and a part of the guide roller is disposed so as to protrude outward from the roller groove. In the process of fitting the insulating paper 300 and the coil 400 into the groove 211, it is preferable that the guide roller is guided and prevented from being caught or rubbed against the inner surface.

In addition, the support unit 21 further forms magnetic grooves on both sides, inserts a magnetic material 213 into the magnetic grooves formed on one side and then adhesively fixes them, and another support unit 21 is attached to the magnetic grooves formed on the other side. The support unit 21 is attached to each other by the magnetic force of the magnetic body 213 after the support units 21 are disposed in an annular shape by inserting and attaching a metal panel to the magnetic body 213 of the magnetic body 213. ) is maintained in an annular state, and it is preferable to prevent movement in the process of fastening the jig member 31.

In addition, it is preferable to further form catching grooves on the inner surface of the fastening groove 211 to prevent a part of the insulating paper 300 inserted into the fastening groove 211 from being drawn in or being caught and moved, as shown in the drawing. .

The fixing jig part 30 is composed of jig members 31 for fixing while surrounding the support units 21 disposed on the upper and lower surfaces of the stator core 100 .

The jig member 31 is composed of a pair of curved cap members 311, one end of which is hinged to rotate the cap members 311, and the other end is bolted to be detachably fixed. That is, the other ends of the cap members 311 are connected by a clamp method.

An annular seating groove 311a is formed in the cap member 311 so that the support units 21 disposed on the upper and lower surfaces of the stator core 100 are fitted, and the upper and lower portions of the stator core 100 are formed. A coupling groove (311b) is formed so as to be fitted while covering.

The jig member 31 is made of a metal material and is formed in a ring shape.

At this time, one of the cap members 311 is hinged with a bolt shaft 311c at an end, and a fitting groove is formed in the other one so that the bolt shaft 311c is inserted, and the bolt shaft 311c A nut is fastened to the end to fix the bolt shaft 311c inserted into the fitting groove.

By fixing a vibrator, which is a vibrator, to the outer surface of the jig member 31 by further screwing it, the support unit 21 in contact with the jig member 31, the insulating paper 300 and the coil inserted into the support unit 21 By allowing vibration to be transmitted to 400, it is preferable to reduce jamming or rubbing against the inner surface of the fastening groove 211 in the process of bending and twisting the coil 400, and to ensure smooth twisting.

An elastic fixing panel made of a synthetic resin material having elasticity is further attached to and fixed to the seating groove 311a of the cap member 311, so that the support unit 21 is pressed by the elasticity of the elastic fixing panel and the It is preferable to fix the support unit 21.

The connecting portion 40 connects the jig members 31 to each other.

The connecting portion 40 is composed of bolts and nuts fastened by connecting through-holes of the jig member 31 fastened to the upper and lower portions of the stator core 100 and the through-holes of the jig members 31. , It is possible to fix the support units 21 disposed on the upper and lower surfaces of the stator core 100.

At this time, the support unit 21 is further formed with connection grooves on both sides, and is connected to the connection grooves of other support units 21, and the insulating paper 300 and the coil 400 are connected to the connection grooves in communication. It is inserted to support the insulating paper 300 and the coil 400.

The insulating paper 300 and the coil 400 are disposed while wrapping the connection grooves in the process of arranging the support unit 21, and are fastened to the fastening groove 211, so that the insulating paper 300 and the It is possible to prevent the coil 400 from being jammed in the process of being fitted because it is not fitted. In addition, space utilization becomes easy.

Fastening holes 212 are further formed through the support unit 21, and a magnetic body 213 is further inserted into the fastening holes 212, so that the support unit 21 is attached to the magnetic force of the magnetic body 213. By attaching and fixing the support unit 21 by magnetic force to the stator core 100 made of a metal material, it is prevented from being moved or moved during the twisting process, and the insulating paper 300 and the coil 400 ) to prevent the fastening groove 211 from being pressed and moved during the process of arranging the support unit 21 on the stator coil 400.

In the support unit 21, an elastic support panel formed of a synthetic resin material having elasticity to support the insulation paper 300 and the coil 400 inserted into both inner surfaces of the fastening groove 211 by elasticity in the process of twisting ( 211a) is further attached and fixed, and a tapered inclined surface is further formed at the end of the elastic support panel 211a to prevent it from being caught when fitted.

The support unit 21 is further provided with an elastic press-fixing means 50 which presses the jig member 31 by elasticity and prevents the support unit 21 from moving.

The elastic press-fixing means 50 is inserted into the operation groove 51 formed on the upper surface of the support unit 21 and the operation groove 51, and one end is on the inner surface of the operation groove 51. A pressure coil spring 52 fixed by welding, a connection panel 53 made of a metal material welded and fixed to the other end of the pressure coil spring 52, attached to one surface of the connection panel 53, and the pressure A pressure elastic panel 54 made of a synthetic resin material having elasticity to press the inner surface of the jig member 31 by the elasticity of the coil spring 52 is attached to and fixed to the bottom surface of the support unit 21, It consists of an elastic friction panel 55 made of a synthetic resin material having elasticity that causes friction while pressing the stator core 100, and a locking protrusion 56 integrally formed on one surface of the elastic friction panel 55, The elasticity of the pressure coil spring 52, the pressure elastic panel 54, and the elastic friction panel 55 prevents the support unit 21 from moving during twisting while bending the coil 400. and can stably support the coil 400.

In addition, the holding protrusion 56 is caught or rubbed against the stator core 100 to prevent the support unit 21 from moving again.

A curved guide surface is further formed on one surface of the support unit 21, and a curved connection groove is further formed on the guide surface, so that the support unit 21 arranged in an annular shape is wrapped around the synthetic resin material having elasticity in the connection groove. By inserting a fixing ring made of, it is preferable to prevent the support unit 21 from being moved by the elasticity of the fixing ring and to be fixed in an annular state.

In addition, a part of the fixing ring is disposed so as to protrude outward from the connection groove, and is pressed against the inner surface of the seating groove 311a formed in the cap member 311, so that the cap member 311 and the support It is preferable to improve the bonding force and supporting force of the unit 21 and to prevent the cap member 311 from being rotated or moved by an external force.

Although the present invention has been described in detail so far, it is clear that the embodiments mentioned in the process are only illustrative and not limiting, and the present invention is the technical spirit or field of the present invention provided by the claims below. Within the range that does not deviate from, it will be said that component changes to the extent that can be equally coped with fall within the scope of the present invention.

10: alignment jig
20: fastening support
21: support unit
211: fastening groove
211a: elastic support panel
211a': tapered slope
212: fastening hole
213: magnetic body
30: fixed jig part
31: jig member
311: cap member
311a: seating groove
311b: coupling groove
311c: bolt shaft
40: connection part
50: elastic pressure fixing means
51: operating groove
52: pressurized coil spring
53: connection panel
54: pressurized elastic panel
55: elastic friction panel
56: stumbling block
100: stator core
200: slot
300: insulating paper
400: Coil

Claims (5)

An alignment jig designed to support insulating paper and coils inserted through the slots of the stator core,
a fastening support portion formed of support units disposed on the upper and lower surfaces of the stator core and provided with fastening grooves to be inserted into the insulating paper and the coil;
a fixing jig part composed of jig members surrounding and fixing the support units disposed on the upper and lower surfaces of the stator core; and
In the multilayer hairpin alignment jig for an electric vehicle driving motor consisting of a connecting portion connecting the jig members,
Fastening holes are further formed through the support unit, and a magnetic material is further inserted into the fastening holes so that the support unit is attached and fixed by the magnetic force of the magnetic material. now.
According to claim 1,
The support unit is further formed with connection grooves on both side surfaces, so that the support unit and the connection grooves of other support units disposed adjacent to each other are connected to support the insulating paper and the coil. Multi-layer hairpin alignment jig.
delete According to claim 1,
The jig member is composed of a pair of cap members formed in a curved shape,
One end of the cap members is hinged and the other end is bolted and fixed,
A multilayer hairpin alignment jig for an electric vehicle drive motor, characterized in that annular seating grooves are formed to fit the support units disposed on the stator core, and coupling grooves are formed to fit the stator core.
According to claim 1,
An elastic support panel is further attached and fixed to the support unit so as to support the insulating paper and the coil inserted into both inner surfaces of the fastening groove by elasticity,
A tapered inclined surface is further formed at the end of the elastic support panel to prevent jamming during insertion,
The support unit is further provided with an elastic press-fixing means to prevent the support unit from moving by pressing the jig member by elasticity,
The elastic type pressure fixing means,
An operating groove formed on an upper surface of the support unit;
A pressure coil spring inserted into the operating groove and having one end fixed to an inner surface of the operating groove;
A connection panel connected to and fixed to the other end of the pressure coil spring;
A pressurized elastic panel attached to one surface of the connection panel and pressurizing the jig member by elasticity of the pressurized coil spring;
An elastic friction panel attached to and fixed to the bottom surface of the support unit and rubbing against the stator core;
A multilayer hairpin alignment jig for an electric vehicle drive motor, characterized in that consisting of locking protrusions formed on the elastic friction panel.

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