KR102675512B1 - Sheild clip for high voltage wire and wire connecting apparatus - Google Patents

Abstract

The present invention relates to a shield clip for high voltage wire and a wire connection device using the same. The shield clip 10 of the present invention is composed entirely of a support portion 12 that is seated around the external insulating layer 38 of the wire 30, and is connected to the support portion 12 and spaced at a predetermined distance. There is a crimp part 16 surrounding the support part 12 and a connection part 20 extending from the crimp part 16 and electrically connected to the shield shell 44 of the connector. The connection portion 20 is formed to have an inner diameter larger than the outer diameter of the wire 30. The shield wire 36 of the wire 30 is inserted into the insertion space 18 formed between the support part 12 and the crimp part 16 and is pressed and coupled. Accordingly, the shield wire 36 of the wire 30 and the shield shell 44 of the connector are electrically connected by the shield clip 10, so that the shield shell is efficiently grounded in the high voltage connector.

Description

Shield clip for high voltage wire and wire connecting apparatus using the same {Sheild clip for high voltage wire and wire connecting apparatus}

The present invention relates to a shield clip for a high-voltage wire and a wire connection device using the same. More specifically, it relates to a shield clip for a high-voltage wire used to electrically connect the shield shell of a high-voltage wire and a connector and a wire connection device using the same. will be.

A connector has a terminal installed inside a housing that forms the exterior, and a wire is connected to the terminal to extend to the outside of the housing. Such a connector is combined with a counterpart connector and each terminal is electrically connected to perform an electrical connection with the counterpart.

As electric vehicles are commercialized, high voltage is used to drive the motor, which is the driving source, so the need for high-voltage connectors is increasing. High-voltage connectors use a shield shell inside the housing to shield electromagnetic waves. A wire used in a high-voltage connector has a shield wire for grounding the shield shell between an internal insulating layer surrounding the core wire and an external insulating layer forming the exterior of the wire. This shield line is electrically connected to the shield cell inside the housing.

To this end, the shield wire is electrically connected to the shield shell through the support ring and the clamping ring by compressing the tip of the wire between the support ring and the clamping ring at the tip of the wire adjacent to the terminal.

However, the support ring and the clamp ring connecting the shield wire and the shield shield are each assembled on a wire, and a part of the clamp ring and the support ring is compressed so that the shield wire is compressed between them, so there are relatively many parts and it is complicated. There is a problem.

In addition, in the prior art, the part where the support ring and the clamp ring are simultaneously pressed is adjacent to the terminal, and there is a structure for connection with the shield shell on the opposite side of the terminal, so the parts of the support ring and the clamp ring are adjacent to the terminal and are insulated. There is a problem that sufficient distance is not secured.

Republic of Korea Patent No. 10-1810127 Japanese Patent Publication No. 2000-294344 Japanese Patent Publication No. 2003-297472

The purpose of the present invention is to solve the conventional problems described above and to simplify the configuration for connecting a shield shell and a shield wire in a high voltage connector.

Another object of the present invention is to secure sufficient insulation distance between the shield clip and the terminal.

According to the features of the present invention for achieving the above-mentioned object, the present invention provides a shield clip electrically connected to a shield wire of a high-voltage wire, in which a through hole through which the wire passes is formed, and the shield wire is formed. A support part seated on the outer surface, a crimp part that is integrally connected to the support part, faces the outer surface of the support part with a gap, and presses the shield wire between the support part, and a connector extending from the crimp part. It includes a connection part electrically connected to the shield shell, and a chamfer is formed at the tip of the support part to guide the insertion of the shield wire into the gap between the support part and the crimp part.

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The inner diameter of the connection part is formed to be larger than the outer diameter of the wire.

Pressing slits are formed in the support portion and the crimp portion extending in the longitudinal direction.

At least two compression slits are formed at regular intervals.

According to another feature of the present invention, the present invention is a wire connecting device that electrically connects the shield shell of the connector and the shield wire between the inner insulating layer surrounding the core wire connected to the terminal and the outer insulating layer forming the outside of the high voltage wire. , wherein the shield wire located at the tip of the external insulating layer of the wire and turned over on the external insulating layer is seated on the outer surface, and is integrally connected to the support part and faces the outer surface of the support part with a gap. A shield clip including a crimp part for pressing the shield wire between the support part and a connection part extending from the crimp part and electrically connected to the shield shell of the connector, and a terminal connected to the tip of the core wire of the wire are inserted. It includes a shield shell that is installed on either the inner housing or the outer housing into which the inner housing is inserted, performs an electromagnetic wave shielding function, and is electrically connected to the connection part of the shield clip, between the support part and the crimp part. An insertion space is formed, and a chamfer is formed at the tip of the support portion to guide the insertion of the shield wire into the insertion space.

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The connection part is located closer to the terminal than the support part and the crimp part, and the inner diameter of the connection part is formed to be larger than the outer diameter of the wire, so that the contact finger of the shield shell contacts in an elastically deformed state.

The insertion space is formed such that its entrance is open toward the terminal.

Pressing slits are formed in the support portion and the crimp portion at regular intervals in the longitudinal direction.

The following effects can be achieved with the shield clip for high voltage wire and the wire connection device using the same according to the present invention.

In the present invention, the shield clip connecting the shield shell of the high-voltage connector and the shield wire of the wire is made as a separate item, which simplifies the configuration of connecting the shield shell and the shield wire of the wire in the high-voltage connector, and has the effect of quickly performing the joining operation.

In the present invention, since the contact part of the shield clip is located on the terminal side and has an inner diameter larger than the diameter of the wire, there is an effect of securing a relatively long insulation distance between the terminal and the shield clip.

Figure 1 is a perspective view showing a preferred embodiment of the shield clip according to the present invention installed on a wire.
Figure 2 is a longitudinal cross-sectional view of Figure 1.
Figure 3 is a perspective view showing the configuration of a shield clip according to an embodiment of the present invention.
Figure 4 is a cross-sectional perspective view showing the configuration of a shield clip according to an embodiment of the present invention.
Figure 5 is a perspective view showing a modified example of the shield clip of an embodiment of the present invention.
Figure 6 is a cross-sectional view showing the configuration of a wire connection device according to an embodiment of the present invention.
Figure 7 is an explanatory diagram showing the process of connecting the shield clip with the shield wire in an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing the components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, 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 or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

As shown in the drawings, the shield clip 10 is made of a conductive metal material. The shield clip 10 is installed by being pressed to the wire 30 and is electrically connected to the shield wire 36 of the wire 30.

The shield clip 10 is shown in detail in FIGS. 3 and 4, and has a cylindrical support portion 12 on the inside. The support portion 12 does not necessarily have to have a cylindrical shape, but may have a polygonal cylindrical shape close to a cylindrical shape. The support portion 12 is seated on the outer surface of the wire 30 and has a through hole 13 formed through the center. A wire 30 is positioned through the through hole 13. The inner diameter of the through hole 13 is equal to or slightly larger than the outer diameter of the wire 30.

A chamfer 14 is formed at one end of the support portion 12. The chamfer 14 is formed to be inclined so that the outer diameter of the support portion 12 becomes smaller toward the tip. The chamfer 14 allows the shield wire 36, which will be described below, to be smoothly guided to the outer surface of the support portion 12.

There is a crimp part 16 surrounding the support part 12 at a predetermined distance from the outer surface of the support part 12. The crimp part 16 has an inner diameter larger than the outer diameter of the support part 12 and forms an insertion space 18 between it and the support part 12. A shield line 36 is located within the insertion space 18. The crimp portion 16 is compressed to the outer surface of the support portion 12 with a shield wire 36 interposed therebetween. It is preferable that the shape of the support portion 12 and the shape of the crimp portion 16 are the same. The entrance of the insertion space 18 opens toward the tip of the wire 30, that is, the terminal 40 coupled to the tip of the wire 30, which will be described below.

Extending from the crimp portion 16 is a connecting portion 20. The connection part 20 has an inner diameter larger than the outer diameter of the crimp part 16. The connection portion 20 is a portion that contacts the contact finger of the shield shell 44, which will be described below. The connection portion 20 extends toward the terminal 40 connected to the tip of the wire 30. Since it has a relatively larger outer diameter than the outer diameter of the wire 30, it has a relatively long insulation from the terminal 40. Distance can be secured. In this embodiment, the connection portion 20 is made in a ring shape. The connecting portion 20 has a ring shape and extends by a predetermined width toward the terminal 40, which will be described below. The connecting portion 20 has a certain outer diameter, so that the contact finger, which will be described below, can be accurately contacted. .

The connecting portion 20 and the crimp portion 16 are connected by a connecting portion 22, and the connecting portion 22 is designed so that the inner diameter gradually increases from the crimp portion 16 toward the connecting portion 22. As the connection part 20 is connected to the crimp part 16 by the connection part 22, an electrical connection is made between the shield shell 44 and the shield wire 36. The inclination of the connecting portion 22 may also serve to guide the shield wire 36 into the insertion space 18. The inner diameter of the connection portion 22 gradually increases toward the terminal 40, which will be described below.

Meanwhile, Figure 5 shows a modification of the shield clip 10 of this embodiment. For convenience of explanation, identical components are given the same reference numerals and separate descriptions are omitted. Here, a pressing slit 24 is formed in the support part 12 and the crimp part 16. The compression slit 24 allows the support portion 12 and the crimp portion 16 to be formed into a certain shape when compressed to the wire 30. Due to the space called the compression slit 24, the support portion 12 or the crimp portion 16 does not burst during compression and can be compressed in a certain shape. The compression slit 24 is formed to extend in the longitudinal direction of the support portion 12 and the crimp portion 16 and is formed to an end opposite to the side of the connection portion 20, which will be described below.

In Figure 5, a plurality of compression slits 24 are formed at regular intervals, but the intervals do not necessarily have to be constant, and the compression slits 24 may be formed at more than one location. Of course, in order to make the shape after compression more consistent, it is necessary to form at least two at regular intervals.

Next, the wire 30 on which the shield clip 10 is installed and its related configuration will be described. The wire 30 has a core wire 32 inside for conducting electricity. The core wire 32 is made of a material with good conductivity, such as copper or copper alloy. There is an internal insulating layer 34 surrounding the core wire 32. The internal insulating layer 34 insulates the core wire 32 from the outside. There is a shield line 36 for shielding surrounding the outer surface of the internal insulating layer 34. The shield wire 36 is made by weaving a type of thread made of a conductive material.

There is an external insulating layer 38 on the outermost side of the wire 30 to surround the shield wire 36. The external insulating layer 38 constitutes the outermost layer of the wire 30 and insulates the shield wire 36 from the outside.

In order to connect this wire 30 to the terminal 40, the external insulating layer 38 and the internal insulating layer 34 at one end are removed, and the external insulating layer 38 and the internal insulating layer 34 are removed. The shield wire 36 is left at a certain length in the desired position. The shield wire 36 remaining in the area where the outer insulating layer 38 and the inner insulating layer 34 were removed is turned over at the end of the outer insulating layer 38 and is located on the outer insulating layer 36, and the shield line 36 is positioned on the outer insulating layer 36. It is combined with the clip (10).

Meanwhile, a terminal 40 is coupled to the core wire 32 exposed at the tip of the wire 30. That is, with the core wire 32 inserted into the barrel portion (not referenced) at the rear end of the terminal 40, the barrel portion is compressed to couple the wire 30 to the terminal 40.

The terminal 40 is positioned within the inner housing 42 by being inserted into the outer housing 43 that constitutes the exterior of the connector. A shield shell 44 is installed in the inner housing 42 to block electromagnetic waves generated due to use at high voltage. That is, a shield shell 44 is installed outside the inner housing 42 or inside the outer housing 43, and the shield shell 44 is electrically connected to the shield clip 10. For this purpose, the shield shell 44 has a contact finger (not shown). The contact finger is elastically deformable and comes into close contact with the connection portion 20 of the shield clip 10 to establish an electrical connection.

In the drawing, reference numeral 46 is a seal for sealing the position where the shield clip 10 is installed, and 48 is a rear holder 48 that supports the seal 46 to prevent it from being pushed. The rear holder 48 is coupled to the rear end of the external housing 43.

Hereinafter, the use of the shield clip for high voltage wire according to the present invention having the above-described configuration and the wire connecting device using the same will be described in detail.

The shield clip 10 is made of a metal material and electrically connects the shield shell 44 and the shield wire 36 of the wire 30 in the high voltage connector. To this end, with the shield clip 10 installed on the wire 30, the core wire 32 and the shield wire 36 at the tip of the wire 30 are exposed. First, a portion of the external insulating layer 38 is removed to expose the shield line 36, and the shield line 36 is turned over and placed at the tip of the external insulating layer 38. Next, the internal insulating layer 34 is removed to expose the core wire 32. The length of the core wire 32 exposed here must be longer than enough to be compressed into the barrel portion of the terminal 40.

For reference, before removing the inner insulating layer 34 and the outer insulating layer 38, do not install only the shield clip 10 to the wire 30, but also install the seal 46 and the rear holder 48 together. The convenience of work is good.

After the terminal 40 is pressed and installed on the exposed core wire 32, the shield clip 10 and the shield wire 36 of the wire 30 are connected. As shown in FIG. 7, in a state where the shield wire 36 is turned over and seated on the external insulating layer 38, the shield clip 10 is moved to insert the shield wire 36 into the insertion space 18 of the shield clip 10. (36) is inserted.

There is a chamfer 14 at the tip of the support portion 12 of the shield clip 10, and the shield clip 10 is flipped over while moving along the outer surface of the external insulating layer 38 of the wire 30. Ensure that the shield wire 36 smoothly enters the insertion space 18. A separate jig may be used to allow the shield wire 36 to enter the insertion space 18 more smoothly.

The crimp portion 16 is compressed while the shield wire 36 is inserted into the insertion space 18. That is, the crimp part 16 is compressed around the outer surface of the crimp part 16 and the crimp part 16 is pressed to the support part 12 with the shield wire 36 placed thereon. More precisely, the crimp part 16 and the support part 12 are pressed to the outer surface of the external insulating layer 38 of the wire 30.

In this way, when the shield wire 36 is compressed between the crimp part 16 and the support part 12, the shield wire 36 and the shield clip 10 are electrically connected. In this state, the terminal 40 is inserted into the inner housing 42, and the inner housing 42 is inserted and installed into the outer housing 43. At least one terminal 40 is inserted into the external housing 43.

When the terminal 40 is inserted into the inner housing 42, the shield shell 44 installed on the inner housing 42 comes into contact with the outer surface of the connection portion 20 of the shield clip 10. When the contact finger of the shield shell 44 touches the connection part 20, the shield shell 44, the shield clip 10, and the shield wire 36 are all electrically connected to each other, thereby forming a structure for electromagnetic wave shielding in a high voltage connector. is completed.

As shown in FIG. 6, the connection part 20, which is a part for connection with the shield shell 44, is on the terminal 40 side, and the support part 12 and the crimp part between which the shield wire 36 is pressed are provided. (16) is located on the opposite side of the terminal 40 with respect to the connection portion 20, so that the distance between the terminal 40 and the shield wire 36 is sufficient to secure an insulation distance. In particular, the connection portion 20 has an inner diameter larger than the outer diameter of the core wire 32, so that a sufficient insulation distance can be secured.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, terms such as “include,” “comprise,” or “have” described above mean that the corresponding component may be present, unless specifically stated to the contrary, and therefore do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology and, unless explicitly defined in the present invention, should not be interpreted in an idealized or overly formal sense.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

10: Shield clip 12: Support part
14: Chamfer 16: Crimp portion
18: Insertion space 20: Connection part
22: Connection 24: Compression slit
30: wire 32: core wire
34: internal insulating layer 36: shield wire
38: external insulating layer 40: terminal
42: inner housing 43: outer housing
44: shield shell 46: seal
48: Rear holder

Claims (10)

In the shield clip that is electrically connected to the shield wire of the high voltage wire,
a support portion in which a through hole through which the wire passes is formed and the shield wire is seated on the outer surface;
a crimp part that is integrally connected to the support part, faces the outer surface of the support part with a gap, and presses the shield wire between the support parts;
It includes a connection part extending from the crimp part and electrically connected to the shield shell of the connector,
A shield clip in which a chamfer is formed at the tip of the support portion to guide the insertion of the shield wire into the gap between the support portion and the crimp portion.
delete The shield clip of claim 1, wherein the inner diameter of the connection portion is larger than the outer diameter of the wire.
The shield clip according to claim 3, wherein compression slits are formed in the support portion and the crimp portion extending in a longitudinal direction.
The shield clip of claim 4, wherein at least two compression slits are formed at regular intervals.
In the wire connection device that electrically connects the shield shell of the connector and the shield wire between the inner insulating layer surrounding the core wire connected to the terminal and the outer insulating layer forming the outside of the high voltage wire,
A support portion located at the tip of the outer insulating layer of the wire and seated on the outer surface of the shield wire, which is positioned upside down on the outer insulating layer, is integrally connected to the support portion and faces the outer surface of the support portion with a gap, and the shield wire is connected to the outer surface of the support portion. A shield clip including a crimp part that is pressed between the support part and a connection part that extends from the crimp part and is electrically connected to the shield shell of the connector;
It includes a shield shell that is installed on either the inner housing into which the terminal connected to the tip of the core wire is inserted and the outer housing into which the inner housing is inserted, performs an electromagnetic wave shielding function, and is electrically connected to the connection portion of the shield clip. do,
An insertion space is formed between the support part and the crimp part, and a chamfer is formed at the tip of the support part to guide the insertion of the shield wire into the insertion space.
delete The method of claim 6, wherein the connection portion is located closer to the terminal than the support portion and the crimp portion, and the inner diameter of the connection portion is formed to be larger than the outer diameter of the wire so that the contact finger of the shield shell contacts the terminal in an elastically deformed state. A wire connection device.
The wire connecting device according to claim 8, wherein the insertion space is formed with an entrance open toward the terminal.
The wire connecting device according to claim 9, wherein compression slits are formed in the support portion and the crimp portion at regular intervals in the longitudinal direction.

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