JP2014220937A - Wire harness and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-reliability wire harness which prevents electric wires from being loosened.SOLUTION: The wire harness comprises: a plurality of electric wires 10; connectors 60 mounted to or disposed around the electric wires 10; sheath members such as a clamp 70, a tube 80 and a bracket 90; and wire materials 20 which are collectively wound around the electric wires 10. In the sheath members, mounting parts 63, 73, 83 and 93 are provided for holding the wire materials 20 being collectively wound around the bundled electric wires 10. The wire materials 20 are mounted to the sheath members while being deformed to be held by the mounting parts 63, 73, 83 and 93.

Description

  The present invention relates to a wire harness and a manufacturing method thereof.

  Patent Document 1 discloses a wire harness mounted on an automobile, and this wire harness includes a plurality of electric wires. The electric wires are wound with an adhesive tape and bundled to prevent them from being separated from each other. Thus, when each electric wire is bundled with an adhesive tape, since the electric wire may wrinkle as the adhesive tape is wound, it is often necessary to rely on manual work while observing the state of the electric wire. In the case of pressure-sensitive adhesive tapes, there are problems such as generation of volatile organic compounds (VOC) in the adhesive and deterioration of transmission characteristics due to the plasticizer moving to the insulator, and further cracks and heat shrinkage due to aging degradation. There is also a problem.

  On the other hand, Patent Document 2 discloses a composite cable in which a plurality of wire shaft centers, bind wires, and strip length display members are combined, and a bind wire made of a metal wire or nylon thread is spirally wound around the outer periphery thereof. Is disclosed. According to such a binding wire, unlike the adhesive tape, there is no particular difficulty in automating the winding work around the electric wire, and there is no trouble caused by the occurrence of VOC in the adhesive or the plasticizer. There is a merit that the problem of aging deterioration hardly occurs.

JP 2009-274535 A JP 2003-297151 A

  By the way, in patent document 2, the adhesive tape is wound over the edge part and each electric wire of a bind wire, and the bind wire is hold | maintained at each electric wire via the adhesive tape. However, when the adhesive strength of the adhesive tape is reduced due to use in a high temperature environment, aging deterioration, or the like, there is a risk that the spirally wound bind wire may come off from the adhesive tape.

  This invention is completed based on the above situations, Comprising: It aims at providing the reliable wire harness which prevents that each electric wire separates.

  The present invention is a wire harness for bundling a plurality of electric wires, and includes an exterior member attached to the electric wire or arranged around the electric wire, and a wire rod wound around the bundled electric wires at once. And the exterior member is provided with an attachment portion for stopping the wire in a state of being collectively wound around the bundled electric wires, and the wire is deformed into a shape that can be stopped by the attachment portion. And is characterized by being attached to the exterior member.

  Since each wire is bundled by winding the wire around each wire, it is more suitable for automating the winding work than the case where each wire is bundled with adhesive tape, and there is also a problem of deterioration over time. Hateful. In addition, since the wire is deformed into a shape that can be fixed to the attachment portion of the exterior member, unlike the case where an adhesive tape other than the wire is interposed, the force of the wire itself (locking force) strongly tightens the attachment portion of the exterior member. It can be attached and the wound wire is prevented from being unintentionally unwound. Therefore, according to the present invention, a highly reliable wire harness that prevents the electric wires from being separated is provided.

It is a front view of the wire harness which concerns on Example 1 of this invention. It is a figure for demonstrating the manufacturing method of a wire harness. It is related to Example 2 of this invention, (A) The front view of the wire harness before winding a wire around each electric wire, and (B) The front view of the wire harness of the state which wound the wire around each electric wire. It is a principal part enlarged view of the wire harness which concerns on Example 3 of this invention. It is a principal part enlarged view of the wire harness which concerns on Example 4 of this invention.

Preferred embodiments of the present invention are shown below.
The wire is fixed to the exterior member while being passed through the attachment portion. Thereby, it becomes possible to perform the attachment work of the wire to the exterior member easily and reliably.

  The exterior member is a connector that accommodates a terminal fitting connected to the terminal portion of the electric wire, a bracket that holds the connector, a protector that is attached to the connector and covers the electric wire, a clamp that holds the electric wire, and a tube that passes through and covers the electric wire Or at least one of the protectors. Since such an exterior member is directly or indirectly attached to the electric wire, the position accuracy of the wire relative to the electric wire can be increased. The connector includes not only the connector housing but also a cover and a case attached to the connector housing.

  The wire is spirally wound around the bundled electric wires at once. According to this, a wire can be easily wound manually or automatically around each electric wire.

  Further, in the method for manufacturing the wire harness described above, each electric wire extending from the exterior member to each of the two wire portions facing each other by folding back through the wire to the attachment portion provided in the exterior member. Each of the two wire rod portions facing each other by turning up each electric wire extending from the exterior member. The two wire portions are spirally wound around each of the electric wires in a double spiral manner by rotating in directions opposite to each other in a direction away from the member. According to this, a wire harness is easily manufactured. In particular, by applying a yarn knotting machine or a sewing machine mechanism, it is possible to automatically wind the wire around the exterior member.

<Example 1>
A first embodiment of the present invention will be described with reference to FIGS. The wire harness of Example 1 includes a plurality of electric wires 10 and a wire 20 that is wound around the outer periphery of each electric wire 10 in a state where the electric wires 10 are collected. The electric wires 10 are prevented from being separated from each other by the wire 20.

  In the case of Example 1, each electric wire 10 is comprised by the coaxial line (coaxial cable) used for transmission of antenna received signals, such as radio, television, a telephone, GPS, and ETC. Although not shown in detail, the coaxial line is usually composed of a conductor, an insulator that covers the outer periphery of the conductor, a shield conductor that covers the outer periphery of the insulator, and a skin that covers the outer periphery of the shield conductor. However, the electric wires 10 are not limited to coaxial wires, and may be other insulated wires such as single-core wires (single-core cables) and multi-core wires (multi-core cables). It may be a mixture of lines. Furthermore, the outer diameter of each electric wire 10 may be configured with different dimensions.

  The wire 20 is preferably a linear strip that can be bent, and has at least an outer diameter smaller than the outer diameter of the wire 10 to be wound. In the case of Example 1, the wire 20 is, for example, a natural fiber such as cotton, hemp, or wool, or a yarn such as a spun yarn or a filament yarn made of a chemical fiber such as nylon, fluorocarbon, polyester, or polyethylene, or a blended fiber thereof. Alternatively, it may be selected from copper wires such as enamel wires, metal wires made of aluminum wires, stainless steel wires, piano wires, and the like. Here, the wire 20 may be used as a single wire, but may be used by twisting or knitting a plurality of wires. In Example 1, a thread made of silk, nylon, fluorocarbon, polyethylene, or the like is used from the viewpoint of handleability and availability. But when a metal wire is wound around each electric wire 10, there exists a merit that each electric wire 10 can be hold | maintained to a fixed form by the shape retainability of metal wire itself.

  In the first embodiment, both end portions of each electric wire 10 are connected to terminal fittings (not shown), and each terminal fitting is accommodated in the connector housing 61 of the corresponding connector 60. That is, the connector 60 is attached to both ends of each electric wire 10, and each electric wire 10 is led out from the back portion 62 of the connector housing 61. Further, a plate-like attachment portion 63 is provided on the back portion 62 of the connector housing 61 so as to stop the wire 20 wound around each electric wire 10. A hole 64 is provided through the mounting portion 63.

  Now, as shown in FIG. 1, the wire 20 is continuous with the winding part 21 spirally wound around the outer periphery of each electric wire 10, and both ends of the winding part 21, and is passed through the hole 64 of the attachment part 63. It consists of a pair of stoppers 22 that are deformed into a shape that can be stopped by the connector 60 and are attached to the connector 60.

  The winding portion 21 includes a first winding portion 21A that advances while turning clockwise from one connector 60A side to the other connector 60B side, and one connector 60A side to the other connector 60B side. And a second winding portion 21B that advances while turning counterclockwise. The first and second winding portions 21 </ b> A and 21 </ b> B have intersections 24 that intersect each other on the outer circumference of each electric wire 10 while each spiral winding makes a round.

  The stopper 22 includes a first stopper 22A formed by passing the wire 20 through the hole 64 of one connector 60A and then being folded back into a U shape and hooked to the attachment 63 of the connector 60A. After the one end of the two ends of the wire is passed through the hole 64 of the other connector 60B, the second stopper is connected to the other end of the wire 20 and / or the mounting portion 63 of the other connector 60B. Part 22B. The method of tying the second stopper 22B is arbitrary, but the tying can be automatically performed by applying a known yarn knotting mechanism in a yarn knotting machine or a sewing machine.

Next, the manufacturing method of the wire harness of Example 1 is demonstrated.
As shown in FIG. 2, of the two connectors 60, the wire 20 is passed through the hole 64 of the attachment portion 63 of one connector 60 </ b> A, and the wire 20 is folded in a U shape to form the first stopper 22 </ b> A. Two wire portions 25 extending opposite to each other from the first stopper 22A are formed. Subsequently, around each of the two wire portions 25, the other connector 60 </ b> B is separated from the one connector 60 </ b> A while being alternately swung in the direction of the arrow with the electric wires 10 led out from the connector 60. Go in the direction. In this case, the other connector 60B is swung so as to draw a figure 8 with each wire portion 25 being inward when viewed from the traveling direction, and accordingly, each electric wire 10 is connected to the other connector 60B. It is led and wound around each wire portion 25.

  Thereafter, when the other connector 60B reaches a position corresponding to both ends of the two wire portions 25, one end of the two wire portions 25 is inserted into the hole 64 of the attachment portion 63 of the other connector 60B. , One end is connected to the other end or / and the attachment portion 63 to form the second stopper 22B. Thereby, it will be in the state by which each electric wire 10 was alternately wound around each wire rod part 25, and if it sees from the wire 20 side, each of two wire rod parts 25 will be the 1st, 2nd winding parts 21A and 21B. Thus, each electric wire 10 is double-spirally wound in opposite directions from one connector 60A side to the other connector 60B side. In this case, since the spiral winding directions of the first and second winding portions 21A and 21B are opposite to each other, each electric wire 10 is not brazed in one spiral winding direction, and the bending of the electric wire 10 is not performed. The degree of freedom is increased. And the state spirally wound by these 1st, 2nd winding parts 21A and 21B is firmly maintained by the force (locking force) of 1st, 2nd stop part 22A, 22B itself. In addition, the winding operation | work of this wire 20 can be automatically performed by applying the mechanism of a yarn knotting machine or a sewing machine.

  Contrary to the above, in the state where the first stopper 22A and the two wire portions 25 are formed through the wire 20 through the hole 64 of the one connector 60A, each of the electric wires 10 led out from the other connector 60B. The two wire rod portions 25 are moved around each electric wire 10 by rotating the two wire rod portions 25 in directions opposite to each other in a direction away from the one connector 60A. Double spiraling is also possible.

  As described above, according to the first embodiment, since the electric wires 10 are bundled by winding the wire 20 around each electric wire 10, unlike the case where the electric wires 10 are bundled with the adhesive tape, It is suitable for automation, and if it is the wire 20, the problem of aged deterioration hardly occurs. In particular, in the case of Example 1, since each electric wire 10 is composed of a coaxial wire, the problem that the transmission characteristics deteriorate due to the plasticizer in the adhesive tape moving to the insulator becomes serious. The benefits that can be eliminated by

  Further, since the stopper portion 22 of the wire 20 is deformed into a shape that can be stopped by the attachment portion 63 of the connector 60, the stopper portion 22 is firmly attached to the attachment portion 63 of the connector 60 by its own force (locking force). Inadvertent unwinding of the wound wire 20 is prevented. In addition, the stopper 22 is firmly held in a state of being hooked on the connector 60 via the mounting portion 63 and the hole 64 provided in the connector 60. Therefore, according to Example 1, the highly reliable wire harness which prevents that each electric wire 10 is separated is provided.

<Example 2>
3A and 3B show Example 2 of the present invention. The second embodiment is different from the first embodiment in that the second stopper portion 22D of the wire 20 is stopped by the clamp 70 instead of the other connector 60B.
The clamp 70 includes a holding portion 71 that holds the electric wires 10 in a lump, and a fixing portion 72 that is connected to the holding portion 71 and attached to the vehicle body (not shown). In the case of the second embodiment, a plurality of the clamps 70 are provided at appropriate positions of each electric wire 10 with an interval in the length direction. An attachment portion 73 is provided on at least one of the clamps 70. The attachment portion 73 has a plate-like form protruding from the holding portion 71 of the clamp 70 and has a hole 74 penetrating in the plate thickness direction.

  The wire 20 is passed through the hole 74 of the attachment part 73 of one connector 60A and latched, and the second stopper 22D is passed through the hole 74 of the attachment part 73 of the clamp 70 and latched. And first and second winding portions 21A and 21B that are spirally wound around each wire 10 between the first and second stopping portions 22A and 22B, and the attachment target of the second stopping portion 22D is The basic structure is the same as that of the first embodiment except that the clamp 70 is used.

  According to the second embodiment, in addition to being able to enjoy the benefits of the first embodiment, the second stoppers are arranged depending on the arrangement positions of the clamps 70 (the clamps 70 having the mounting portions 73 and the holes 74) with respect to the electric wires 10. Since the arrangement position of 22D can be determined, the range which prevents the dispersion | distribution of each electric wire 10 can be limited to a predetermined range. The first stopper may also be stopped by the clamp 70 instead of the one connector 60A.

<Example 3>
FIG. 4 shows a third embodiment of the present invention. The third embodiment is different from the first embodiment in that the second stopper 22C of the wire 20 is fixed to the tube 80 and the wire 20 is spirally wound around each electric wire 10 in a single layer.
The tube 80 is a rubber tube made of rubber that covers the electric wires 10 in a state where the electric wires 10 are collectively inserted. The tube 80 is provided with an attachment portion 83 at an end portion near one connector 60A (not shown). A hole 84 is formed through the portion 83. The second stopper 22C of the wire 20 is passed through the hole 84 and then tied to the attachment portion 83.

  Moreover, the wire 20 has the winding part 21E spirally wound in one direction toward the direction away from one connector 60A (not shown). According to Example 3, since the wire 20 is only spirally wound in a single layer, the amount of the wire 20 used can be reduced, and the economy is excellent. The tube 80 may be a corrugated tube made of synthetic resin having a predetermined rigidity instead of a rubber tube.

<Example 4>
FIG. 5 shows a fourth embodiment of the present invention. In Example 4, the first stopper 22F of the wire 20 is fixed to the bracket 90, the wire 20 is spirally wound around each electric wire 10, and the mounting portion 93 has a hole. This is different from the first embodiment.
The bracket 90 is plate-shaped, and includes a support portion 91 that supports the connector housing 61 of one connector 60A, a vehicle body fixing portion 92 that is attached to the vehicle body 41, and an attachment portion that connects the attachment portion 92 and the support portion 91. 93.

  The wire 20 has a winding portion 21F that is spirally wound in one direction in a direction away from the one connector 60A. The first stop portion 22F is wound around the entire circumference of the attachment portion 93, and the end portion of the wire 20 is bound to the wound portion. According to the fourth embodiment, there is no need to newly provide a unique structure as the attachment portion 93, and the existing bracket 90 can be used as it is, and therefore, the versatility is excellent. Note that the second stopper may also be fixed to the bracket 90 instead of the other connector 60B.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following aspects are also included in the technical scope of the present invention.
(1) In the case of Examples 1 to 3, the attachment portion may be a hook-shaped hook and does not have a hole. In this case, the attachment portion may be deformed in advance as a ring and hooked and locked on the hook in that state.
(2) The stopper may be formed not in the both ends of the wire but in the middle of the length of the wire.
(3) The structure which the stop part of a wire may be stopped to exterior members other than a connector, a clamp, a tube, and a bracket may be sufficient. For example, the exterior member for stopping the stopper of the wire may be a vehicle part (for example, a vehicle body panel) that is disposed around the electric wire but does not engage with the electric wire.
(4) In the case of the present invention, the use of an adhesive tape is not necessarily prohibited, and an allowable range of adhesive tape may be used to assist in preventing each electric wire from spreading.

DESCRIPTION OF SYMBOLS 10 ... Electric wire 20 ... Wire material 21, 21F ... Winding part 21A ... 1st winding part 21B ... 2nd winding part 22 ... Stop part 22A, 22F ... 1st stop part 22B, 22C, 22D ... 2nd stop part 25 ... Wire part part 60. Connector (exterior member)
63, 73, 83, 93 ... mounting part 64, 74, 84 ... hole 70 ... clamp (exterior member)
80 ... Tube (exterior member)
90 ... Bracket (exterior member)

Claims (5)

A wire harness that bundles multiple wires,
An exterior member attached to the electric wire or arranged around the electric wire;
A wire rod wound around the bundled electric wires together,
The exterior member is provided with an attachment portion for stopping the wire in a state of being collectively wound around the bundled electric wires,
The wire harness is deformed into a shape that can be stopped by the attachment portion and attached to the exterior member.   The wire harness according to claim 1, wherein the wire is fixed to the exterior member while being passed through the attachment portion.   The exterior member is composed of at least one of a connector that accommodates a terminal fitting connected to the terminal portion of the electric wire, a bracket that holds the connector, a clamp that holds the electric wire, and a tube or protector that is inserted and covered with the electric wire. The wire harness according to claim 1 or 2, characterized in that.   The wire harness according to any one of claims 1 to 3, wherein the wire is spirally wound around the bundled electric wires at once. A manufacturing method for manufacturing the wire harness according to any one of claims 1 to 4,
Fold through the wire to the mounting portion provided on the exterior member,
By moving each electric wire extending from the exterior member to each of the two wire parts facing each other by turning back in a direction away from the exterior member while turning in opposite directions, or from the exterior member Each of the two wire rod portions facing each extending wire is advanced while being swung in opposite directions toward the direction away from the exterior member, so that the two wires are disposed around each of the wires. A method of manufacturing a wire harness in which a wire portion is spirally wound in a double manner.

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