JP2025070048A - Cable fixing structure - Google Patents

Abstract

To provide a fixing structure for a cable capable of adjusting noise countermeasures without re-fixing the cable.SOLUTION: A fixing structure for a cable used for a vehicle comprises a main body for fixing the cable and an adjustment component including an electronic component for adjusting impedance of the vehicle. The main body component includes: a first mounting part including a through hole, through which the cable is inserted, a metal collar which is fitted to the first mounting part, a second mounting part where the adjustment component can be pulled out and inserted, and a connection circuit which electrically connects the metal collar with the electronic component. The cable is fixed to the first mounting part via the metal collar, and the adjustment component is mounted in the second mounting part.SELECTED DRAWING: Figure 1

Description

This disclosure relates to a cable fixing structure that enables resonance point tuning for use in vehicles.

Patent document 1 discloses a cable fixing structure that provides noise countermeasures by fixing the cable to a cable gland via a ferrite core.

JP 2002-171612 A

When adjusting the noise countermeasures in the cable fixing structure disclosed in Patent Document 1, it is necessary to remove the cable in order to replace the ferrite core, and then refix the cable to the new ferrite core. This poses the problem that the adjustment work for noise countermeasures is cumbersome.

This disclosure was made in consideration of the above problems, and aims to provide a cable fixing structure that allows adjustments to be made to noise countermeasures without having to re-fix the cable each time.

In order to solve the above problems, one aspect of the disclosed technology is a cable fixing structure for use in a vehicle, comprising a main body part for fixing the cable, and an adjustment part having an electronic component for adjusting the impedance of the vehicle, the main body part comprising a first mounting part having a through hole for inserting the cable, a metal collar that fits into the first mounting part, a second mounting part that allows the adjustment part to be inserted and removed, and a connection circuit that electrically connects the metal collar and the electronic component, the cable being fixed to the first mounting part via the metal collar, and the adjustment part being attached to the second mounting part.

The cable fixing structure disclosed herein allows adjustment of noise countermeasures by simply inserting and removing adjustment parts without removing the cable, reducing the hassle of adjusting noise countermeasures.

FIG. 1 is a top view illustrating a structure of a main body part used in a cable fixing structure according to an embodiment of the present disclosure. 2 is a cross-sectional view of the main body part shown in FIG. 1 taken along line AA. FIG. 1 shows an example of an adjustment part.

The cable fixing structure according to the present disclosure includes a structure that allows an adjustment part that can adjust the impedance of the vehicle to be inserted and removed from a part that fastens the cable to the vehicle body GND. This structure allows the noise countermeasures to be adjusted simply by changing the adjustment part.
Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings.

<Embodiment>
[structure]
Fig. 1 is a top view for explaining the structure of a main body component 100 used in a cable fixing structure according to an embodiment of the present disclosure. Fig. 2 is a cross-sectional view taken along line AA of the main body component 100 shown in Fig. 1.

The main body component 100 illustrated in Figs. 1 and 2 is a component (connection part) for fastening a cable (not shown) to the vehicle body GND. An example of the cable is a wire harness (W/H) used for wiring the vehicle. This main body component 100 includes a first attachment part 110, a metal collar 120, a second attachment part 130, and a connection circuit 140.

The first attachment portion 110 is provided for attaching the wire harness (W/H) to the main body component 100, and is a hole that penetrates the main body component 100 for inserting the wire harness (W/H).

The metal collar 120 is a cylindrical part made of a conductive metal material. The cylindrical shape of the metal collar 120 allows the metal collar 120 to fit into the through hole of the first mounting part 110, and also allows a wire harness (W/H) to be inserted inside the metal collar 120.

With these parts, the wire harness (W/H) is inserted into the first mounting part 110 to which the metal collar 120 is fitted, and is fastened to the vehicle body GND by the metal collar 120, thereby being fixed to the main body part 100.

The second mounting portion 130 is provided for attaching a specific part in a removable manner, and is typically a socket. An example of a specific part is an adjustment part that can adjust the impedance of the vehicle and provide noise countermeasures.

The adjustment component that can adjust the impedance of the vehicle and is attached to the second mounting portion 130 can be a component that is the size of a low-profile fuse. Such a component that is the size of a low-profile fuse can be realized by replacing the fuse location 210 in the low-profile fuse component (adjustment component) 200 with a board (electronic component) on which elements such as coils, capacitors, and resistors can be directly mounted, as shown in FIG. 3.

In this embodiment, the main body component 100 has two second mounting portions 130, but the number of second mounting portions 130 may be one or three or more.

The connection circuit 140 is a component for electrically connecting the second mounting portion 130 to the metal collar 120. When multiple second mounting portions 130 are provided on the main body component 100, the connection circuit 140 may be a parallel circuit that connects multiple second mounting portions 130 (i.e., adjustment components 200) and the metal collar 120 in parallel, or a series circuit that connects multiple second mounting portions 130 (i.e., adjustment components 200) and the metal collar 120 in series.

＜Effects＞
As described above, according to the cable fixing structure of one embodiment of the present disclosure, the main body component 100 to which the wire harness (W/H) is fastened and fixed to the vehicle body GND by the metal collar 120 is provided with a socket into which the adjustment component 200 capable of noise countermeasures to adjust the impedance of the vehicle can be inserted and removed.

This cable fixing structure allows the resonance frequencies of the assembled parts to match due to differences in the impedance of each vehicle, and in cases where it is necessary to shift the resonance frequency for EMC (Electro-Magnetic Compatibility) compliance, impedance tuning can be easily performed by simply changing the adjustment parts.

The cable fixing structure disclosed herein can be used in situations where it is necessary to shift the resonance frequency of assembled parts for EMC compliance.

100: Main body component 110: First mounting portion 120: Metal collar 130: Second mounting portion 140: Connection circuit 200: Adjustment component (low-profile fuse component)
210 Fuse location

Claims (1)

A cable fixing structure for use in a vehicle, comprising:
A main body part for fixing the cable;
an adjustment component having an electronic component for adjusting the impedance of the vehicle;
The body part includes:
a first attachment portion having a through hole through which the cable is inserted;
a metal collar fitted to the first mounting portion;
A second mounting portion into which the adjustment component can be inserted and removed;
a connection circuit electrically connecting the metal collar and the electronic component;
The cable is fixed to the first mounting portion via the metal collar,
The adjustment component is attached to the second attachment portion.
Cable fixing structure.

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