KR20200029254A - Wire crimping device for high voltage connector - Google Patents

Abstract

The present invention relates to a wire crimping device for a high-voltage connector, which crimps a wire having a shield wire (13) installed between an inner insulating layer (12) for surrounding a center wire (11) and an outer insulating layer (14) for forming the outside of a wire (10). The wire crimping device comprises: a support ring (20) installed to surround the outer surface of the tip of the outer insulating layer (14) from which a predetermined section is removed so that the inner insulating layer (12) is exposed at the tip of the wire (10); and a crimp ring (30) installed to surround the outer surface of the support ring (20) while the shield wire (13) is seated on the outer surface of the support ring (20). A plurality of crimp elastic pieces (33) having a cantilever shape are formed on one side of the crimp ring (30) along one edge of the crimp ring (30) to crimp the inner insulating layer (12). According to the present invention, the wire crimping device has the plurality of electric pieces inclined with the diameter becoming narrow toward the tip thereof, thereby increasing a crimping force, and enables crimping regardless of the thickness of the wire, thereby being capable of making components shared.

Description

Wire Crimping Device for High Voltage Connectors {WIRE CRIMPING DEVICE FOR HIGH VOLTAGE CONNECTOR}

The present invention relates to a wire crimping device for a high-voltage connector, and more particularly, to a wire crimping device for a high-voltage connector having a crimp spring for relatively crimping a wire.

The connector has a terminal installed inside the housing, and a wire is connected to the terminal to extend outside the housing. Such a connector is coupled with a mating connector to perform electrical connection by electrically connecting each terminal.

Connectors are used at voltages of various intensities. In recent years, high voltages are used to drive motors in electric vehicles or hybrid vehicles, so high voltage connectors are frequently used.

The wire used in such a high voltage connector has a shield wire for grounding between the inner insulating layer surrounding the core wire and the outer insulating layer forming the outer appearance of the wire. When the terminal and the wire are connected, the shield wire should not be in electrical contact with the wire, but must be electrically connected to the shield shell inside the connector.

To this end, the shield wire is crimped at the tip portion between the support ring and the crimp ring at the tip of the wire adjacent to the terminal.

However, in the connector for a high voltage according to the prior art, the tip of the shield wire should be positioned between the support ring and the crimping spring so as not to extend toward the terminal, and the crimp with the tip of the shield wire placed on the outer surface of the support ring In the process of fitting the ring to the outer surface of the support ring, there is a problem that the tip of the shield wire comes out between the support ring and the crimp ring.

In addition, even if the crimping spring is fixed in close contact with the outer surface of the wire, the crimping force is insufficient to close the wire properly, and when the wire is pulled in a certain direction, the crimping spring is pushed out from the outer surface of the wire, or the shield wire is exposed or pushed and pressed together with the crimping spring. There is a problem of becoming unstable.

In addition, even if the diameter of the wire is the same, the thickness of the center line is different, so the thickness of the inner insulating layer may be different. At this time, there is a problem in that a crimp ring having a different diameter must be prepared according to the thickness of the center line.

Republic of Korea Patent No. 10-2013-0043018

An object of the present invention is to solve the problems of the prior art as described above, and to provide a wire connecting device used in a high voltage connector in which a crimp ring compresses a wire relatively more strongly.

Another object of the present invention is to prevent the tip of the shield wire from being exposed between the support ring and the crimp ring.

Another object of the present invention is to enable compression by a single crimp spring regardless of the thickness of the center line used for the wire.

The present invention provides a wire crimping device for a high voltage connector for compressing a wire on which a shield wire is installed between an inner insulating layer surrounding a center line and an outer insulating layer forming the outside of the wire, wherein the inner insulating layer is disposed at the tip of the wire. It includes a support ring installed to surround the outer surface of the distal end of the outer insulating layer from which the predetermined section is removed to be exposed, and a crimp ring installed to surround the outer surface of the support ring while a shield line is seated on the outer surface of the support ring, A plurality of crimp elastic pieces having a cantilever shape are formed on one side of the crimp spring along the edge of the crimp spring and are pressed to the outer surface of the inner insulating layer.

 The crimping spring is formed in the longitudinal direction of the wire and is inserted into the outer surface of the support ring to compress the shield wire, and one end of the body is bent in the inner direction of the body, and the longitudinal direction of the wire Therefore, it includes a shield formed by bending once more, and a cantilever-shaped crimped elastic piece formed so as to have a plurality around the tip of the shield and formed to have an inclination adjacent to each other toward the tip.

The diameter formed by the tips of the plurality of compressed elastic pieces is smaller than the diameter of the inner insulating layer of the wire.

The plurality of compressed elastic pieces further include a hook portion bent inward so that the tip faces the body.

The shield is bent in the inner direction of the body so that the diameter becomes smaller, and the shield wire is pulled toward the support ring.

Inclined surfaces are formed at both ends of the support ring toward the inner surface.

In the wire crimping device for a high voltage connector according to the present invention, the following effects can be obtained.

In the present invention, the shield wire seated on the outer surface of the support ring is fitted so as to be completely enclosed by the shield portion of the crimp spring, so that the tip of the shield wire is securely fixed so as not to escape between the support ring and the crimp ring.

In the present invention, a plurality of inclined elastic elastic pieces are formed so that the diameter becomes narrower toward the tip to increase the compressive force, and it is possible to crimp in various ways to cope with the thickness of the center line.

In the present invention, a hook is formed at the tip of the compressed elastic piece so that even if the wire is pushed in one direction, the crimping spring does not come out, so that the contact is stably maintained.

1 is a perspective view showing the configuration of a preferred embodiment of a wire crimping device for a high voltage connector according to the present invention.
Figure 2 is a cross-sectional perspective view showing the configuration of a main portion of an embodiment of the present invention.
Figure 3 is an enlarged cross-sectional perspective view showing the main configuration of the embodiment of the present invention.
Figure 4 is a perspective view showing the configuration of a support ring constituting an embodiment of the present invention.
Figure 5 is a cross-sectional view showing the configuration of a support ring constituting an embodiment of the present invention.
Figure 6 is a perspective view showing the configuration of a crimping spring constituting an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the embodiments of the present invention, when it is determined that detailed descriptions of related well-known structures or functions interfere with the understanding of the embodiments of the present invention, detailed descriptions thereof will be omitted.

In addition, in describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), and the like can be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

With reference to the drawings, a preferred embodiment of the wire crimp device for a high voltage connector of the present invention will be described.

Referring to FIG. 2, the wire 10 is a center line 11 made of a conductor, an inner insulating layer 12 surrounding the center line 11, and a shield line 13 formed surrounding an outer portion of the inner insulating layer 12 And an outer insulating layer 14 formed outside the shield line 13. Here, the shield wire 13 made of a conductive material blocks electromagnetic waves generated therein, thereby preventing electromagnetic waves from affecting surrounding electronic devices.

The center line 11 is a passage through which current flows directly, and the inner insulating layer 12 is positioned between the center line 11 and the shield line 13 to form an insulating layer, and the outer insulating layer 14 is An insulating layer between the wire 10 and the outside is formed. Therefore, the center line 11 is made of a material having good electrical conductivity, and the inner insulating layer 12 and the outer insulating layer 14 are made of a material having good insulating properties. Particularly, the shield wire 13 is provided to surround the outer surface of the inner insulating layer 12, and the shield wire 13 is made of a wire of a conductive material in the form of a mesh, and serves as a ground.

At the end of the wire 10, the center line 11, the inner insulating layer 12, the shield wire 13, and the outer insulating layer 14 are formed to be exposed in order, and the support ring 20 to be described later is the outer It is sandwiched between the wires 10 to surround the insulating layer 14. The shield wire 13 of the wire 10 is bent so as to cover the outer surface of the support ring 20, and the crimping spring 30 to be described above is seated thereon, so that the shield wire 13 is the support ring 20 It is sandwiched between the and the clip spring (30).

The support ring 20 is formed to extend in the longitudinal direction of the wire 10 in a cylindrical shape. The support ring 20 is fitted to the outer insulating layer 14 of the wire 10 but is located near the cross section where the inner insulating layer 12 starts to be exposed. The shield wire 13 exposed from the wire 10 is turned over so that it is seated on the outer surface of the support ring 20.

Referring to FIG. 4, inclined surfaces 21 are formed on the inner surfaces of the inlets on both sides of the support ring 20. The inclined surface 21 allows the inner diameters of the inlets on both sides of the support ring 20 to become wider toward the outside so that the wire 10 can smoothly enter the inside of the support ring 20. The inclined surface 21 is formed on both edges of the support ring 20 and can be fitted without directionality to the wire 10.

Referring to FIG. 6, the crimping spring 30 is formed by extending the cylindrical body 31 in the longitudinal direction of the wire 10. The body 31 is fitted to the outer surface of the support ring 20 and compresses the shield wire 13 seated on the outer surface of the support ring 20. A shield 32 is formed on the clim spring 30 so that one end is bent in the inner direction of the body 31 so that the diameter of the hole formed in the body 31 is reduced. Specifically, the shield 32 extends from one end of the body 31 and is bent toward the inside of the body 31, and is bent once more toward the longitudinal direction of the wire 10 to extend.

The shield part 32 shields the shield wire 13 from being turned over so that the bent part is not exposed. In addition, the shield wire 13 so that the shield wire 13 seated on the outer surface of the support ring 20 can be surely kept inverted in the process of fitting the crimp spring 30 into the support ring 20. Crimp the bent portion of the. The shield portion 32 compresses the bent portion of the shield wire 13 and at the same time, the crimping spring 30 extends over the front ends of the support ring 20 and the outer insulating layer 14 toward the support ring 20. It also acts as a stopper to prevent further entry.

A plurality of compressed elastic pieces 33 are formed at regular intervals at the front end of the shield part 32. More specifically, there are a plurality of compressed elastic pieces 33 surrounding the front end of the shield 32. Each of the compressed elastic pieces 33 is inclined toward a virtual extension line of the longitudinal center line of the body 31 as it goes toward the tip in a cantilever shape. Therefore, the inner diameter formed by the compressed elastic pieces 33 becomes smaller as it goes toward the front end of the compressed elastic pieces 33. It is preferable that the diameter formed by the tip of the pressed elastic pieces 33 is smaller than the diameter of the inner insulating layer 12 of the wire 10. The crimped elastic piece 33 is crimped to the outer surface of the inner insulating layer 12 of the wire 10. The crimped elastic piece 33 is not in full contact with the outer surface of the inner insulating layer 12 of the wire 10, the tip of the crimped elastic piece 33 along the circumference of the wire 10, the inner insulation It is in close contact with the outer surface of the layer 12. Since the compressed elastic piece 33 has a certain degree of elasticity, the thickness of the inner insulating layer 12 can also be used for wires 10 of different types.

A hook portion (not shown) having a hook shape may be further formed at the tip of the compressed elastic piece 33. The hook portion is hung on the inner insulating layer 12 to prevent the clamp spring 30 from moving in a constant direction along the length direction of the wire 10. A direction in which the clip spring 30 cannot move may be determined according to a direction in which the hook portion is formed.

Next, with reference to the drawings will be described in detail that the wire crimping device for a high voltage connector according to the present invention having the configuration as described above is used.

In order to perform crimping using the wire crimping apparatus of the present invention, a center line 11 is exposed to extend more than the inner insulating layer 12 at one end of the wire 10, and the outer surface of the inner insulating layer 12 is exposed. The outer insulating layer 14 is removed so that the shield wire 13 is exposed.

Meanwhile, in a high voltage connector, a shield shell (not shown) for grounding is installed inside the connector, and the shield shell 13 of the wire 10 is electrically connected to the shield shell. Specifically, the shield shell is in contact with the body 31 or the crimp elastic piece 33 of the crimp spring 30, thereby making electrical contact between the shield shell and the shield wire 13.

Before connecting the terminal (not shown) with the wire 10, a part of the outer insulating layer 14 at the front end of the wire 10 is partially removed so that the shield wire 13 is exposed, and the outer insulating layer 14 ), The support ring 20 is installed at the tip. The shield wire 13 in an exposed state is turned over and seated on the outer surface of the support ring 20. The seated shield wire 13 is cut off leaving the length of the support ring 20, and the shield wire 13 is turned over and toward the inner insulating layer 12 of the exposed wire 10, the crimping spring Install 30.

On the outer surface of the support ring 20, the body 31 of the crimp spring 30 is seated to cover the shield wire 13, and the crimp elastic piece 33 is an inner insulating layer of the wire 10 ( 12) is pressed. At this time, the shield portion 32 of the crimping spring 30 shields the bent portion of the shield wire 13, and the crimping spring 30 is attached to the front end of the outer insulating layer 14 and the support ring 20. It acts as a stopper that prevents you from getting caught and no longer entering.

Specifically, the body 31 of the crimping spring 30 is seated on the outer surface of the support ring 20 in a state where the shield wire 13 is placed, and the shield 32 is the shield wire 13 The bent portion and the tip of the outer insulating layer 14 are shielded. In addition, the crimp spring 30 is installed so that the crimp elastic piece 33 is squeezed to the inner insulating layer 12 of the wire 10. At this time, since the shield 32 is formed to have a small diameter in the process of installing the crimped spring 30 on the support ring 20, it serves to pull the shield wire 13 toward the support ring 20. do.

The crimp elastic piece 33 of the crimp spring 30 is formed to be inclined such that the diameter becomes narrower as it goes in the longitudinal direction of the wire 10. Therefore, although it is possible to easily move in the direction in which the crimping spring 30 is installed in the support ring 20, the crimping elasticity when the crimping spring 30 moves in a direction away from the support ring 20 The tip of the piece 33 is not caught by the inner insulating layer 12 and moved. When the installation of the crimping spring 30 is completed, it has a smaller diameter than the diameter of the inner insulating layer 12 and is fixed by pressing the outer surface of the inner insulating layer 12.

Additionally, an insulating ring (not shown) is additionally installed at a position corresponding to the tip of the crimped spring 30 to secure an insulating distance between the shield wire 13 and a terminal installed at the tip of the wire 10. You can.

When the support ring 20 and the crimping spring 30 are installed on the wire 10, a part of the tip of the inner insulating layer 12 is removed to expose the center line 11. The terminal is coupled to the center line 11 to be electrically connected.

In the above, even if all the components constituting the embodiment according to the present invention are described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, if it is within the scope of the present invention, all of the components may be selectively combined and operated. In addition, the terms "include", "consist" or "have" as described above mean that the corresponding component can be intrinsic, unless specifically stated to the contrary, excluding other components. It should not be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person skilled in the art to which the present invention pertains, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted as being consistent with the contextual meaning of the related art, and are not to be interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

10: wire 11: center line
12: inner insulating layer 13: shield wire
14: outer insulating layer 20: support ring
21: Slope 30: Clim spring
31: body 32: shield
33: compressed elastic piece

Claims (6)

In the wire crimping device for a high-voltage connector for crimping the wire to which the shield wire is installed between the inner insulating layer surrounding the center line and the outer insulating layer forming the outside of the wire,
A support ring installed to surround the outer surface of the tip of the outer insulating layer with a predetermined section removed so that the inner insulating layer is exposed at the tip of the wire;
It includes a crimp ring that is installed to surround the outer surface of the support ring in a state where a shield wire is seated on the outer surface of the support ring,
A wire crimp device for a high voltage connector having a plurality of crimp elastic pieces of a cantilever shape formed on one side of the crimp spring along the edge of the crimp spring to be compressed on the outer surface of the inner insulating layer.
The method of claim 1, wherein the clip spring
A cylindrical body formed in the longitudinal direction of the wire and fitted to the outer surface of the support ring to compress the shield wire;
A shield formed by bending one end of the body in the inner direction of the body, and bending it once more along the length direction of the wire,
A wire crimping device for a high voltage connector including a crimping elastic piece of a cantilever shape that is formed to have a plurality of shapes around the front end of the shield and to be inclined adjacent to each other toward the front end.
The wire crimping apparatus of claim 2, wherein a diameter formed by the ends of the plurality of crimped elastic pieces is smaller than a diameter of the inner insulating layer of the wire.
4. The wire crimping device for a high voltage connector of claim 3, wherein the plurality of crimped elastic pieces further include a hook portion bent inward so that a tip end faces the body.
5. The wire crimping device for a high voltage connector of claim 4, wherein the shield is bent in an inner direction of the body so as to have a small diameter and pulls the shield wire toward the support ring.
The wire crimping device for a high voltage connector according to any one of claims 1 to 5, wherein an inclined surface is formed at both ends of the support ring toward an inner surface.

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