JP2014150679A - Wire protection tape and wire protection structure of wire harness including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire protection tape having a new structure which protects a terminal of an electric wire protruding from a sheath material of a wire harness with high versatility, and to provide a wire protection structure of the wire harness which uses the wire protection tape.SOLUTION: A wire protection tape 10 for a wire harness includes: an elastic tape 12; and a fixing tape 14 which is made of a material having elasticity lower than the elastic tape 12 and has a width dimension smaller than the elastic tape 12. The fixing tape 14 is overlapped with the one end part 16 side of the elastic tape 12 when viewed in a width direction to be bonded thereto.

Description

  The present invention relates to an electric wire protection tape for protecting an end of an electric wire protruding from an exterior material of a wire harness routed in an automobile, and an electric wire protection structure for a wire harness using the electric wire protection tape.

  2. Description of the Related Art Conventionally, a wire harness in which a large number of electric wires for connecting a battery and various electrical components are bundled is routed inside an automobile. In such a wire harness, for the purpose of preventing damage to the electric wire due to interference with other members, a binding tape wound around the outer peripheral surface of the wire bundle, and a synthetic resin corrug attached to the outer peripheral side thereof Each wire is protected by an exterior material such as a tube.

  By the way, when the connector is attached to the end of the wire bundle that constitutes the wire harness, the end of the wire bundle that is bundled in a substantially cylindrical shape is connected to the terminal fittings arranged in the long rectangular connector, respectively. In order to make this happen, it is necessary to make the end of the wire bundle expand in a substantially fan shape. Therefore, the exterior material to be mounted on the outer peripheral surface of the wire bundle of the wire harness must be set at the end of the connector at a predetermined distance from the connector, and a load by the exterior material is applied to the connector connection portion of each wire. It has been done to suppress.

  Furthermore, it is said that the electric wire group that protrudes from the end of the exterior material in a substantially fan shape and is routed in the region connected to the connector is protected by covering the outer peripheral surface of the electric wire group with a sheet or the like without being exposed. There are many requests. In view of this, the present applicant, in Japanese Patent Application Laid-Open No. 11-213786 (Patent Document 1), describes an electric wire group that protrudes from the end portion of the exterior material and expands in a fan shape and is connected to the connector as shown in FIG. It is proposed to cover with a protective sheet having a fan shape as shown in (B).

  However, in such a protective sheet, a protective sheet having a wide variety of shapes is required depending on the shape of the connector and the fan shape of the electric wire group, which varies depending on the number of the electric wire groups, and is still improved from the viewpoint of versatility. There was room for.

JP-A-11-213786

  The present invention has been made in the background of the above-mentioned circumstances, and its solution problem is a wire protection tape having a novel structure capable of protecting the terminal of the wire protruding from the exterior material of the wire harness with high versatility, and It is providing the electric wire protection structure of a wire harness using it.

  A first aspect of the present invention relating to an electric wire protection tape for a wire harness is an electric wire protection tape for a wire harness, which is made of an elastic tape and a material having lower elasticity than the elastic tape, and more than the elastic tape. A fixing tape having a small width dimension, wherein the fixing tape is overlapped and bonded to one end side in the width direction of the stretchable tape.

  According to this aspect, the fixing tape having a smaller width dimension and less stretchability than the stretchable tape is bonded to one side in the width direction of the electric wire protection tape. And the area | region comprised only with the expansion-contraction tape is provided in the width direction other side of the electric wire protection tape. Therefore, in the wire harness, the wire protection tape of the present invention is advantageously wrapped around the wire group that protrudes from the end of the exterior material so as to expand in a substantially fan shape and is disposed in the wire exposure region connected to the connector. can do. That is, in the electric wire group in the electric wire exposure area protruding from the outer packaging material, the area on the outer packaging material side of each electric wire is wound with the side on which the fixing tape is provided, while the area on the connector side of each electric wire is mainly made of an elastic tape. Wrap the configured side. As a result, the fixing tape is wound around the outer packaging material side of the electric wire protruding from the outer packaging material, and the electric wire protection tape is securely positioned with respect to the electric wire group, while the connector side is wrapped with the expansion / contraction tape to spread the electric wire. Can be allowed. Therefore, if the wire protection tape of the present invention is used, they can be suitably protected from the outer peripheral side without applying an excessive load to the wire group in the wire exposure region.

  Moreover, since the wire protection tape of this aspect continuously extends in the longitudinal shape, the length of the tape wound around the wire exposure region even when the fan shape of the wire exposure region varies depending on the connector shape and the number of wires. It is possible to easily cope with such shape changes by simply changing the height. Therefore, as compared with the case where various protective sheets individually cut and formed into a fan shape as in the prior art are prepared, a dramatic improvement in versatility can be achieved.

  Here, the ratio of the width dimension of the fixed tape to the width dimension of the stretchable tape can be arbitrarily set. For example, the minimum width dimension of the fixing tape is 2/3 or less, more preferably 1/2 or less of the width dimension of the stretchable tape from the viewpoint of following the fan shape of the electric wire exposure region and reducing the load on the electric wire. . Note that the width dimension of the fixed tape refers to the width dimension in a portion that continuously extends in the longitudinal direction, and includes a portion that is discontinuously provided in the longitudinal direction, such as a protruding portion of a second aspect described later. Absent.

  A second aspect of the present invention relating to a wire harness tape for a wire harness is the one described in the first aspect, wherein the fixing tape protrudes toward the other end in the width direction of the stretchable tape. And a plurality of the protruding portions are provided apart from each other in the longitudinal direction.

  According to this aspect, by providing the protrusion at the other end in the width direction of the wire protection tape, the fixing tape is localized in the longitudinal direction at the other end in the width direction of the wire protection tape. Yes. Thereby, the stretchability of the other end portion in the width direction of the electric wire protection tape can be controlled by the ratio of the fixing tape provided in the longitudinal direction. Therefore, without changing the material of the wire protection tape, it is very easy to change the ratio of the fixing tape provided in the longitudinal direction, that is, the pitch and shape of the protruding portion, and the other end in the width direction of the wire protection tape. Can control the elasticity. Therefore, the degree of freedom in designing an electric wire protection tape that is optimal for protecting the end of each electric wire protruding from the exterior material of the wire harness is improved.

  A first aspect of the present invention relating to a wire harness electric wire protection structure is a wire including a number of electric wire bundles, an exterior material attached to the outer peripheral surface of the electric wire bundle, and a connector attached to an end of the electric wire bundle. In the harness, a wire protection structure for a wire harness that protects a group of wires disposed in an exposed area of the wire that protrudes from the end of the exterior material in a substantially fan shape and is connected to the connector. Using the wire protection tape according to the second aspect, the fixing tape side of the wire protection tape is wound around the exterior material side of the wire exposure region, while the stretchable tape side of the wire protection tape is the wire It is wound around the connector side of the exposed area.

  According to this aspect, in the electric wire group in the electric wire exposure region protruding from the outer packaging material, the side on which the fixing tape is provided is wound around the outer packaging material side region which is the base end side of each electric wire, while the distal end side of each electric wire is wound The side where the elastic tape is mainly provided can be wound around the connector side region. As a result, the fixing tape is wound around the base end portion side of the electric wire protruding from the exterior material, and the electric wire protection tape is securely fixed to the electric wire group, while the distal end portion is wrapped with the elastic tape. Is allowed to be allowed to spread. Therefore, if the wire protection tape of the present invention is used, they can be suitably protected from the outer peripheral side without applying an excessive load to the wire group in the wire exposure region.

  Moreover, since the wire protection tape of this aspect continuously extends in the longitudinal shape, the length of the tape wound around the wire exposure region even when the fan shape of the wire exposure region varies depending on the connector shape and the number of wires. It is possible to easily cope with such shape changes by simply changing the height. Therefore, as compared with the case where various protective sheets individually cut and formed into a fan shape as in the prior art are prepared, a dramatic improvement in versatility can be achieved.

  According to the present invention, a fixing tape having a lower elasticity than the elastic tape is bonded to one side in the width direction of the electric wire protection tape, while the other side in the width direction includes a portion constituted only by the elastic tape. It is out. As a result, in the wire harness, the main tape is directed toward the exterior material side with respect to the electric wire group that protrudes from the end of the exterior material in a substantially fan shape and is disposed in the electric wire exposure area connected to the connector. Only by winding the electric wire protection tape of the invention, it can be advantageously wound so as to follow the fan-like shape. In addition, since the wire protection tape of the present invention continuously extends in the longitudinal shape, the length of the tape wound around the wire exposure region even when the fan shape of the wire exposure region varies depending on the connector shape and the number of wires. It is possible to easily cope with the shape change by simply changing.

The top view of the electric wire protection tape as 1st embodiment of this invention. The front view of FIG. The top view which shows the electric wire protection structure of the wire harness using the electric wire protection tape shown in FIG. The top view of the electric wire protection tape as 2nd embodiment of this invention. The front view of FIG. The top view which shows the electric wire protection structure of the wire harness using the electric wire protection tape shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show an electric wire protection tape 10 as a first embodiment of the present invention. As illustrated in FIGS. 1 and 2, the electric wire protection tape 10 includes an elastic tape 12 and a fixing tape 14. The fixed tape 14 is made of a material having a lower elasticity than the elastic tape 12, and is formed with a smaller width dimension (W2 <W1) than the elastic tape 12. And while it is set as the structure where the fixing tape 14 was piled up and adhere | attached on the edge part 16 side of the width direction one side of the expansion-contraction tape 12, it is comprised as a belt-like member continuous in the longitudinal shape. An adhesive is applied to the surface of the stretchable tape 12 on the side to which the fixing tape 14 is not bonded.

  Here, as the material of the stretchable tape 12, any material can be used as long as it has a higher stretchability than the fixed tape 14, for example, a thermoplastic polyurethane elastomer such as Mobilon (trade name of Nisshinbo Chemical Co., Ltd.), Other thermoplastic elastomers, thermosetting elastomers, and elastic cotton cloth such as taping tape can be considered. On the other hand, any material can be used as the material of the fixing tape 14 as long as the material is less elastic than the elastic tape 12, and for example, a synthetic resin material such as PVC (polyvinyl chloride) can be considered.

  Next, in FIG. 3, the top view for demonstrating the electric wire protection structure of the wire harness 18 using the electric wire protection tape 10 shown in FIGS. 1-2 is shown. Here, the wire harness 18 includes a large number of unillustrated wire bundles, a corrugated tube 22 that is an exterior material attached to the outer peripheral surface of the wire bundle, and a long rectangular connector 24 attached to the end of the wire bundle. It is prepared for. In the wire harness 18, an electric wire group 30 is disposed in an electric wire exposure region 28 that protrudes from the end portion 26 of the corrugated tube 22 in a substantially fan shape and is connected to the connector 24. In order to protect the outer peripheral surface of the wire group 30 disposed in the wire exposure region 28 with the wire protection tape 10, the fixing tape 14 side of the wire protection tape 10 shown in FIG. The wire protection tape 10 may be wound around the wire exposure region 28 in a state of being partially overlapped with the wire. Thereby, while the side where the fixing tape 14 of the wire protection tape 10 is provided is wound around the corrugated tube 22 side in the wire exposure region 28 where the wire group 30 is less spread, the wire group 30 is spread. In the region on the large connector 24 side, the side mainly composed of the stretchable tape 12 of the wire protection tape 10 can be wound.

  Thereby, the fixing tape 14 is wound around the corrugated tube 22 side of the electric wire group 30 protruding from the corrugated tube 22, and the electric wire protection tape 10 is securely fixed to the electric wire group 30, while the connector 24 side is expanded and contracted. The tape 12 can be wound to allow the wire group 30 to spread. Therefore, if the electric wire protection tape 10 of the present embodiment is used, it can be advantageously wound so as to follow the fan-like shape, so that they can be suitably used without applying an excessive load to the electric wire group 30 in the electric wire exposure region 28. It can be protected from the outer peripheral side.

  In addition, as shown in FIG. 1, since the wire protection tape 10 of the present embodiment continuously extends in the longitudinal shape, the fan shape of the wire exposure region 28 depends on the shape of the connector 24 and the number of the wire groups 30. Even when various changes are made, it is possible to easily cope with changes in the shape of the wire protection tape 10 by simply changing the length of the wire protection tape 10 wound around the wire exposure region 28. Therefore, the versatility can be drastically improved as compared with the case where the protective sheets are individually cut and formed into fan shapes as in the prior art.

  In addition, although the ratio (W2 / W1) of the width dimension: W2 of the fixed tape 14 with respect to the width dimension: W1 of the expansion-contraction tape 12 can be set arbitrarily, the followability to the fan shape of the electric wire exposure area | region 28, or an electric wire group From the viewpoint of reducing the load on 30, the width dimension W2 of the fixed tape 14 is 2/3 or less of the width dimension W1 of the stretchable tape 12, more preferably 1/2 or less.

  Next, FIGS. 4 to 5 show an electric wire protection tape 32 as a second embodiment of the present invention. In the electric wire protection tape 32 of the present embodiment, the fixing tape 34 has a protruding portion 38 that protrudes in a rectangular shape toward the other end 36 in the width direction of the stretchable tape 12. On the other hand, a plurality of protruding portions 38 are provided at equal intervals so as to be spaced apart from each other in the longitudinal direction of the wire protection tape 32. Also in the present embodiment, from the viewpoint of following the fan shape of the electric wire exposure region 28 and reducing the load on the electric wire group 30, the width dimension W2 of the fixing tape 34 in the portion extending continuously in the longitudinal direction is: The width dimension of the stretchable tape 12 is 2/3 or less of W1, more preferably 1/2 or less. The width dimension W3 of the fixing tape 34 in the region where the protrusions 38 are formed can be arbitrarily set within the range of W1 or less and W2 or more.

  Thus, in this embodiment, since the protrusion part 38 is provided in the other end part 36 of the width direction of the electric wire protection tape 32, in the other end part 36 of the width direction of the electric wire protection tape 32, it is a longitudinal direction. The fixing tape 34 is provided intermittently. Thus, the stretchability of the other end 36 in the width direction of the wire protection tape 32 can be controlled by the ratio of the fixing tape 34 (projection 38) provided in the longitudinal direction. Therefore, by changing the ratio of the fixing tape 34 provided in the longitudinal direction, that is, the pitch and shape of the protrusions 38 of the fixing tape 34 without changing the material of the electric wire protection tape 32, the electric wire protection tape can be very easily obtained. The stretchability of the other end portion 36 in the width direction of 32 can be controlled, and as shown in FIG. 6, the wire protection tape 32 that is optimal for protecting the end of the wire group 30 protruding from the corrugated tube 22 of the wire harness 18 is highly flexible. It can be designed with a degree.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in the above embodiment, the end of the elastic tape 12 and the ends of the fixing tapes 14 and 34 are flush with each other at the end 16 in the width direction of the elastic tape 12. You may arrange | position inside an end.

  Moreover, the shape of the protrusion part 38 of the fixed tape 34 can be set arbitrarily. For example, the width dimension in the longitudinal direction of the protrusion 38 of the fixing tape 34 may be gradually reduced toward the other end 36 in the width direction of the fixing tape 34.

  Moreover, in the said embodiment, although the protrusion part 38 was spaced apart from each other in the longitudinal direction and was provided with two or more at equal intervals, you may be provided at unequal intervals and the shape of the some protrusion part 38 is the same. You may make it mutually differ.

10, 32: Electric wire protection tape, 12: Elastic tape, 14, 34: Fixed tape, 16: One end, 18: Wire harness, 22: Corrugated tube (exterior material), 24: Connector, 26: End 28: Electric wire exposure area, 30: Electric wire group, 36: The other end, 38: Projection

Claims (3)

A wire protection tape for a wire harness,
Elastic tape,
It is made of a material having a lower elasticity than the elastic tape, and includes a fixed tape having a smaller width dimension than the elastic tape,
The wire protection tape, wherein the fixing tape is overlapped and bonded to one end side in the width direction of the stretchable tape.   The said fixing tape has a protrusion part which protrudes toward the other edge part of the width direction of the said elastic tape, The protrusion part is provided with two or more mutually spaced apart in the longitudinal direction. Wire protection tape. In a wire harness comprising a number of wire bundles, an exterior material attached to the outer peripheral surface of the wire bundle, and a connector attached to the end of the wire bundle, the wire harness projects from the end of the exterior material in a substantially fan shape. An electric wire protection structure for a wire harness that protects an electric wire group disposed in an electric wire exposure region connected to the connector,
Using the wire protection tape according to claim 1 or 2,
The fixing tape side of the electric wire protection tape is wound around the exterior material side of the electric wire exposure region, while the elastic tape side of the electric wire protection tape is wound around the connector side of the electric wire exposure region An electric wire protection structure for a wire harness.

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