KR102620984B1 - Ground pad of wiring for vehicle - Google Patents

Abstract

An invention for a grounding device for vehicle cables is disclosed. The disclosed grounding device for the vehicle cable is: simultaneously in contact with the lower circumferential surface of each shield wire provided on the circumferential surface of each conductor of one or more strands of the cable, and simultaneously in contact with the upper circumferential surface of each of the lower pad and shield wire, which are conductive materials, and conducting electricity. It is characterized by comprising an upper pad made of material, and a binding portion for binding the opposing lower pad and the upper pad.

Description

Grounding device for vehicle cables {GROUND PAD OF WIRING FOR VEHICLE}

The present invention relates to a grounding device for vehicle cables. More specifically, a pair of metallic pads is placed in contact with the shielding wire of each of a plurality of cables wired in a vehicle, and one of the pair of pads is placed on the vehicle body. This relates to a grounding device for a vehicle cable that is intended to reduce cost and weight and improve grounding workability by minimizing parts for grounding the cable by providing contact with the cable.

Generally, high-voltage batteries are used in electric vehicles and fuel cell vehicles, including hybrid vehicles, to supply electrical energy for driving the vehicle.

A high-voltage battery consists of a battery pack that can create high voltage by connecting multiple unit cells or modules, and uses this to generate high power. Accordingly, the high-voltage current generated by the high-voltage battery is sent using a high-voltage cable with a large diameter so that it can be used while the vehicle is driving.

As a high current flows through a high-voltage cable, electromagnetic waves are emitted from the high-voltage cable to the surroundings of the high-voltage cable, so electromagnetic waves may affect the surrounding parts of the high-voltage cable. Accordingly, high voltage cables are shielded to protect the cable from external noise. Shielding consists of individual shielding and collective shielding types. When the braided wire is applied inside the cable, it is classified as individual shielding, and when it wraps around the outside of the cable, it is classified as collective shielding.

Individually shielded cables typically consist of conductors, insulation, braids, taping, and sheath. The conductor is fastened to the unit for power connection, an insulator is applied to prevent short circuits between the conductor and the braided wire, and the braided wire forms a ground to prevent noise from entering the conductor. Therefore, a method of connecting the car body and the braided wire to connect the ground is used.

The background technology for the present invention is disclosed in Korean Patent Publication No. 10-2019-0066696 (publication date: 2019.06.14.) “Grounding clip for high voltage cable assembly.”

The above-described technical configuration is background technology to aid understanding of the present invention, and does not mean that it is widely known prior art in the technical field to which the present invention belongs.

A high-voltage cable for a vehicle according to the prior art is provided with a braided wire for grounding, including a cable connected to ground the braided wire, an earth terminal fixed to the vehicle body, a splice terminal connecting the braided wire and the cable, and an exterior material surrounding the cable. As various parts are provided, the number of working hours to connect a large number of parts increases, leading to a decrease in productivity.

Therefore, there is a need to improve this.

The present invention was devised to improve the problems described above. A pair of metallic pads is placed in contact with the shielding wire of each of the plurality of cables wired in the vehicle, and any one of the pair of pads is contacted to the vehicle body. The purpose is to provide a grounding device for a vehicle cable that minimizes parts for grounding the cable, reduces cost and weight, and improves grounding workability.

The grounding device for a vehicle cable according to the present invention includes: a lower pad made of a current-conducting material and simultaneously in contact with the lower circumferential surface of each shield wire provided on the circumferential surface of each conductor of one or more cables arranged; An upper pad that simultaneously contacts the upper circumferential surface of each of the shielding wires and is made of an electric current-conducting material; and a binding portion that binds the opposing lower pad and the upper pad.

As an example, the binding unit includes a ground binding member connected to the vehicle body to ground the shield wire while binding the corresponding lower pad and the upper pad.

One side of the corresponding lower pad and the upper pad is hingedly connected along the axial direction, and the other side is coupled to the vehicle body by the ground binding member.

As another example, the binding portion may include a hook extending from the other side of the lower pad facing the vehicle body and being inserted into the vehicle body; and a coupling member that protrudes from one side of the lower pad, is inserted into the upper coupling hole, and then couples the lower pad and the upper pad.

At least one of the corresponding lower pad and the upper pad is characterized by forming a recessed receiving groove to receive the cable or the shielding line one by one to maintain the arranged state.

As described above, unlike the prior art, the grounding device for a vehicle cable according to the present invention has a pair of metallic pads in contact with the shielding wire of each of the plurality of cables wired in the vehicle, and one of the pair of pads is By providing the pad in contact with the car body, parts for grounding the cable can be minimized, reducing cost and weight, and improving grounding workability.

Figure 1 is a perspective view of a grounding device for a vehicle cable according to an embodiment of the present invention.
Figure 2 is a diagram showing a state in which the cable grounding device according to an embodiment of the present invention is separated from the vehicle body.
Figure 3 is an initial state diagram of a grounding device for a vehicle cable according to an embodiment of the present invention.
Figure 4 is a longitudinal cross-sectional view of a vehicle cable grounding device according to an embodiment of the present invention.
Figure 5 is a perspective view of a vehicle cable grounding device according to another embodiment of the present invention.
Figure 6 is a longitudinal cross-sectional view of a cable grounding device according to another embodiment of the present invention.

Hereinafter, embodiments of a vehicle cable grounding device according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a perspective view of a vehicle cable grounding device according to an embodiment of the present invention, and Figure 2 is a state diagram of the cable grounding device according to an embodiment of the present invention separated from the vehicle body.

Figure 3 is an initial state diagram of a vehicle cable grounding device according to an embodiment of the present invention, and Figure 4 is a longitudinal cross-sectional view of a vehicle cable grounding device according to an embodiment of the present invention.

1 to 4, the grounding device 100 of the vehicle cable 20 according to an embodiment of the present invention includes a lower pad 110, an upper pad 120, and a binding portion 130.

The grounding device 100 according to the present invention serves to ground the cable 20, especially the high voltage cable 20, wired to the body 10 of the vehicle.

In particular, the cable 20 consists of a conductive conductor 22, an insulating inner sheath 24, a shielding wire 26, and an insulating insulating outer sheath 28.

The insulating inner sheath 24 is provided between the conductor 22 and the shielding wire 26 and serves to prevent the conductor 22 and the shielding wire 26 from contacting each other.

In addition, the insulating shell 28 serves to protect the outside of the shielding wire 26 by surrounding it.

Meanwhile, the lower pad 110 exposes the shielding wire 26 provided on the circumferential surface of each conductor 22 of the cable 20 arranged in one or more strands on the vehicle body 10, and the corresponding shielding wire ( It is provided in contact with the lower peripheral surface of 26) and is made of a material capable of conducting electricity.

At this time, the lower pad 110 is provided to make surface contact with the shielding line 26 to increase the contact area with the shielding line 26.

Additionally, the upper pad 120 is provided to be in contact with the upper peripheral surface of the corresponding shielding line 26 and is made of a material capable of conducting electricity.

The upper pad 120 is provided to make surface contact with the shielding line 26 to increase the contact area with the shielding line 26.

In particular, when the cable 20 has multiple strands, the lower pad 110 and the upper pad 120 arranged to face each other are sized to simultaneously contact each shield line 26. As a result, multiple strands of cable 20 can be grounded simultaneously.

In addition, the binding portion 130 is arranged to face each other and serves to bind the lower pad 110 and the upper pad 120, which form a pair.

At this time, at least one of the corresponding lower pad 110 and upper pad 120 forms a recessed receiving groove 140 equal to the number of strands of the cables 20 arranged.

For convenience, the receiving groove 140 is formed in the upper pad 120.

Therefore, while the shielding wire 26 of the multiple strand cable 20 is placed on the lower pad 110, the receiving groove 140 of the upper pad 120 has a one-to-one contact with the upper peripheral surface of the shielding wire 26. accept it as Then, as the binding portion 130 binds the corresponding upper pad 120 and lower pad 110, the plurality of cables 20 or the corresponding shielding wires 26 are spaced at a predetermined distance so as not to contact each other. maintain the status quo.

At this time, the contact area of the shielding wire 26 with the upper pad 120 increases due to the receiving groove 140, thereby improving grounding efficiency.

Meanwhile, in an embodiment, the binding unit 130 is a ground binding member 132 connected to the vehicle body 10 to ground the shield wire 26 while binding the corresponding lower pad 110 and upper pad 120. ) includes.

And, to ensure grounding reliability, a portion of the lower pad 110 and the upper pad 120 may be directly connected.

For this purpose, the corresponding lower pad 110 and upper pad 120 are hingedly connected on one side along the axial direction, and the other sides forming the free ends are bound to the vehicle body 10 by the ground binding member 132. . At this time, one side of the lower pad 110 and one side of the upper pad 120 may be connected in a curved manner to prevent an increase in internal stress load due to folding.

The lower pad 110 has a lower binding hole 112 formed on the other side along the axial direction, and the upper pad 120 has an upper binding hole 122 formed on the other side along the axial direction.

Therefore, when the lower pad 110 and the upper pad 120 come into contact with the shielding line 26 of the plural cable 20, the lower binding hole 112 and the upper binding hole 122 are aligned in the vertical direction. .

In addition, the ground binding member 132 can be applied to various things such as bolts.

The lower pad 110 and upper pad 120 are not limited in size.

Figure 5 is a perspective view of a vehicle cable grounding device according to another embodiment of the present invention, and Figure 6 is a longitudinal cross-sectional view of a cable grounding device according to another embodiment of the present invention.

Referring to Figures 5 and 6, the grounding device 100 of the vehicle cable 20 according to another embodiment of the present invention includes a lower pad 110, an upper pad 120, and a binding portion 130.

At this time, the lower pad 110 and upper pad 120 are replaced with the ones described above.

And, the binding portion 130 includes a hook 133 and a coupling member 134.

At this time, the upper pad 120 passes through one or more upper binding holes 122. For convenience, a plurality of upper binding holes 122 are formed in the upper pad 120.

In addition, the hook 133 extends from the other side of the lower pad 110 facing the vehicle body 10. Then, as the hook 133 is inserted into the fixing hole 12 of the car body 10, the lower pad 110 is fixed to the car body 10. At this time, the hook 133 is integrally provided with the lower pad 110, and the hook 133 and the lower pad 110 are made of a metallic material. Therefore, the hook 133 is fixed in contact with the vehicle body 10, thereby grounding the cable 20.

In addition, the coupling member 134 protrudes integrally from one side of the lower pad 110 and is inserted into the designated upper coupling hole 122 to couple the lower pad 110 and the upper pad 120. Accordingly, the coupling member 134 maintains the state in which the lower pad 110 and the upper pad 120 are in contact with each other. Therefore, the grounding reliability of the cable 20 is ensured.

Drawing symbols not described are replaced with the ones described above.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will recognize that various modifications and other equivalent embodiments are possible therefrom. You will understand. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: body 20: cable
22: conductor 24: insulating inner skin
26: shielding wire 28: insulating shell
100: Grounding device 110: Lower pad
112: Lower binding hole 120: Upper pad
122: Upper binding hole 130: Binding part
132: Ground binding member 133: Hook
134: Coupling member

Claims (5)

A lower pad that is simultaneously in contact with the lower circumferential surface of each of the shielding wires provided on the circumferential surface of each conductor of one or more strands of the cable and is made of a current-conducting material; An upper pad that simultaneously contacts the upper circumferential surface of each of the shielding wires and is made of an electric current-conducting material; and a binding portion that binds the opposing lower pad and the upper pad,
The binding unit includes a ground binding member connected to the vehicle body to ground the shield wire while binding the corresponding lower pad and the upper pad,
The corresponding lower pad and the upper pad are hingedly connected on one side along the axial direction, and the other sides are coupled to the vehicle body by the ground binding member,
At least one of the corresponding lower pad and the upper pad is recessed to form a plurality of receiving grooves to receive the cable or the shielding line one by one to maintain the arranged state,
The upper pad has a plurality of upper binding holes, and the lower pad has a lower binding hole on the other side along the axial direction to accommodate the cable or the shielding wire corresponding to each of the plurality of receiving grooves, and then A grounding device for a vehicle cable, characterized in that the other side of the upper pad and the lower pad, which are inserted into the upper binding hole and the lower binding hole where ground binding members are aligned, and are interviewed, are connected to the vehicle body.
delete delete According to clause 1,
The binding portion includes a hook that extends from the other side of the lower pad facing the vehicle body and is inserted into the vehicle body; and
A grounding device for a vehicle cable, comprising a coupling member that protrudes from one side of the lower pad, is inserted into the upper coupling hole, and then couples the lower pad and the upper pad. delete

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