JP2000173826A - Noise absorbing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise absorbing member of which the main body case can simply be mounted in such a way that the case is simply mounted to a magnetic material and at the same time, the case structure can be simplified. SOLUTION: This noise absorbing member comprises a cylindrical main body case 13 having opening edges 13a and 13b formed in a slit 14, which is extendedly provided in the longitudinal direction of the case 13, where the case 13 has a tongue part 15 tape-wound on a wire harness 11 at an arbitrary place, so that the case 13 can be pressed into a ferrite 12 through the opening edges 13a and 13b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise absorbing member, and more particularly, to a noise absorbing member mounted on an outer peripheral portion of a wire harness mounted on a vehicle body, an electric device, or the like, for absorbing noise transmitted to the wire harness. .

[0002]

2. Description of the Related Art As a noise absorbing member for absorbing noise transmitted to a wire harness mounted on a vehicle body, an electric device, or the like, there is, for example, one shown in FIG. In FIG. 4, reference numeral 1 denotes a wire harness, and a ferrite 2 is mounted on an outer peripheral portion of the wire harness 1.

Since the ferrite 2 has a cylindrical shape, the magnetic path forms a closed loop, and can absorb noise transmitted to the wire harness 1. A main body case 3 is attached to the ferrite 2. The main body case 3 is formed of half-shaped holding members 5, 6 connected via hinges 4, and holding members 5, 6. Engaging members 7, 8 which can be engaged with each other, and holding member 5
And a tongue 9 wound around the wire harness 2 with a tape.

In order to attach the noise absorbing member having such a structure to the wire harness 1, the ferrite 2 is inserted into the wire harness 1, and then the ferrite 2 is stored in the holding member 5 with the main body case 3 opened. Next, hinge 4
The ferrite 2 is housed in the main body case 3 by closing the holding member 6 and engaging the engaging members 7 and 8 with each other. Next, the tongue 9 is fixed to the wire harness 1 with a tape, so that the ferrite 2 and the main body case 3 are fixed to arbitrary positions of the wire harness 1.

[0005]

However, in such a noise absorbing member, after the ferrite 2 is inserted through the wire harness 1, the main body case 3 is inserted into the ferrite 2.
When attaching the main body case 3, it is necessary to perform an operation of engaging the engaging members 7, 8 after closing the holding members 5, 6 via the hinge 4, so that the mounting of the main body case 3 becomes troublesome. In addition to complicating the mounting process of the absorbing member, the structure of the main body case 3 is complicated only by forming the engaging members 7 and 8 in the main body case 3.

Accordingly, an object of the present invention is to provide a noise absorbing member which can be easily attached to a wire harness by easily attaching a main body case to a magnetic body and which can simplify the structure of the main body case. And

[0007]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, a cylindrical magnetic body attachable to an outer peripheral portion of a wire harness is provided separately from the magnetic body, and is attached to an outer peripheral portion of the wire harness so as to hold the magnetic material. The main body case is formed in a cylindrical shape having an opening edge formed with a slit extending in the longitudinal direction, and a tape is attached to the wire harness at an arbitrary position. It has a tongue wound, and can be press-fitted into the magnetic body from the opening edge.

In this case, after the magnetic material is inserted through the wire bundle,
By pressing the main body case into the magnetic material from the opening edge,
The main body case can be easily attached to the magnetic body, and as a result, the noise absorbing member can be easily attached to the wire bundle. Further, since it is not necessary to provide an engaging member in the main body case as in the related art, the configuration of the main body case can be simplified.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the first aspect of the present invention, a tapered guide member is provided at the opening edge. In this case, even when the width of the slit is reduced, the main body case can be smoothly pressed into the magnetic body along the tapered guide member. As a result, after attaching the main body case to the magnetic body, the magnetic body can be protected over a wide range of the main body case by the amount that the width of the slit can be reduced.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing one embodiment of a noise absorbing member according to the present invention. First, the configuration will be described. 1 and 2, reference numeral 11 denotes a wire harness, and a ferrite (magnetic material) is provided on an outer peripheral portion of the wire harness 11.
12 are installed. Since the ferrite 12 has a cylindrical shape, the magnetic path forms a closed loop, and can absorb noise transmitted to the wire harness 11.
Further, a cylindrical main body case 13 is attached to the ferrite 12, and the main body case 13 has opening edges 13a and 13b in which a slit 14 is formed in a longitudinal direction.

A tongue 15 is provided at an end of the main body case 13, and the tongue 15 is fixed to the wire harness 11 by a tape (not shown). In this embodiment, the ferrite 12 and the main body case 13 constitute a noise absorbing member. In order to attach the noise absorbing member having such a configuration to the wire harness 11, the ferrite 12 is inserted into the wire harness 11, and then stored in the ferrite 12 through the opening edges 13a and 13b of the main case 13. Next, by fixing the tongue 15 to the wire harness 11 with tape,
The ferrite 12 and the main body case 13 are fixed to arbitrary positions of the wire harness 11.

As described above, in this embodiment, the main body case 13
A slit 14 is formed in the longitudinal direction of the main body case 13, and the main body case 13 is pressed into the ferrite 12 from the opening edges 13 a and 13 b of the main body case 13 in which the slit 14 is formed.
Since the ferrite 12 can be attached to the ferrite 12, the main body case 13 can be easily attached to the ferrite 12, and as a result, the noise absorbing member can be easily attached to the wire harness 11.

Further, since it is not necessary to provide a conventional engaging member in the main body case 13, the configuration of the main body case 13 can be simplified. In the present embodiment, the slit 14 having a certain width is provided in the main body case 13. However, the present invention is not limited to this, and the main body case 13 may be configured as shown in FIG. Opening edges 13a, 13
b are provided with tapered guide members 21a, 21a. With this configuration, even when the width of the slit 14 is reduced, the main body case 13 can be smoothly pressed into the ferrite 12 along the tapered guide members 21a and 21b,
After attaching body case 13 to ferrite 12, slit 14
The ferrite 12 can be protected over a wide range of the main body case 13 by the extent that the width of the ferrite 12 can be reduced.

[0014]

According to the first aspect of the present invention, the main body case can be easily attached to the magnetic body by inserting the magnetic body into the wire bundle and then pressing the main body case into the magnetic body from the opening edge. As a result, the noise absorbing member can be easily attached to the wire bundle. Further, since it is not necessary to provide the conventional engagement member in the main body case, the configuration of the main body case can be simplified.

According to the second aspect of the present invention, even when the width of the slit is reduced, the main body case can be smoothly pressed into the magnetic body along the tapered guide member. As a result, after attaching the main body case to the magnetic body, the magnetic body can be protected over a wide range of the main body case by the amount that the width of the slit can be reduced.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a noise absorbing member according to the present invention, and is a view showing a state where the noise absorbing device is attached to a wire harness.

FIG. 2 is a configuration diagram of a main body case of one embodiment.

FIG. 3 is a view showing another shape of the main body case.

4A is a diagram illustrating a state in which a conventional noise absorbing member is attached to a wire harness, and FIG. 4B is a diagram illustrating a configuration of an engagement member.

[Explanation of symbols]

 11 Wire harness 12 Ferrite (magnetic material) 13 Main case 13a, 13b Opening edge 14 Slit 15 Tongue 21a, 21b Guide member

Claims (2)

[Claims] A cylindrical magnetic body which can be mounted on an outer peripheral portion of the wire harness; and a main body which is provided separately from the magnetic body and which can be mounted on the outer peripheral portion of the wire harness so as to hold the magnetic material. A noise absorbing member having a case, wherein the main body case is formed in a cylindrical shape having an opening edge formed with a slit extending in a longitudinal direction thereof, and is wound around the wire harness with tape at an arbitrary position A noise absorbing member having a tongue and being press-fittable into the magnetic body from the opening edge. 2. The noise absorbing member according to claim 1, wherein a tapered guide member is provided at the opening edge.