JP2010187439A - Wiring harness protective material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring harness protective material that minimizes an increase in overall diameter in an installation of the protection material and allows easy and reliable attachment to a wiring harness. <P>SOLUTION: The sheet-like wiring harness protective material 1 protects a wiring harness W when wrapped around the wiring harness W. Projections 2 to be extended in the direction of the length of the wiring harness W in wrapping the protection material around the wiring harness W are provided continuously in the circumferential direction across coupling portions 3. Thus projections and recesses are formed on both sides of the protection material. When the protection material is wrapped around the wiring harness W, its both ends overlap with each other and the inside of a projection 2 at one end fits to the outside of a projection 2 at the other end positioned on the wiring harness W side. The protection material includes a locking mechanism (23, 24) capable of fixing this fit state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wire harness protection material, and more particularly to a wire harness protection material for covering the wire harness and protecting it from interference from external factors.

  A wire harness used for electric wiring of an automobile is formed by bundling a large number of electric wires, branching them at predetermined places as necessary, and connecting connectors. A wire harness is often wound with an adhesive tape such as a vinyl tape in order to bundle electric wires.

  Here, in order to prevent the wire harness from being damaged by contact with the edge of the automobile panel, etc., the wire harness is in a predetermined position where it may interfere with the edge of the wire harness panel wound with adhesive tape. It is generally performed to cover a protective material such as a corrugated tube and to wind an adhesive tape from the outside. The corrugated tube is generally a polypropylene tubular body, which is formed into a bellows tubular shape, and can withstand sharp edges of the panel and has flexibility. Moreover, in order to put on a wire harness, there also exists what cut | disconnected the slit in the longitudinal direction (for example, patent document 1).

  In addition, as a protective material that can be held linearly without bending the wire harness in the longitudinal direction, protective ridges that extend in the longitudinal direction are continuously provided on the winding sheet at a fine pitch and can be wound around the wire harness. A protective material has been proposed (for example, Patent Document 2).

  Furthermore, a protective material having irregularities formed in both the circumferential direction and the longitudinal direction has been proposed as a protective material that can be wound while being bellows tubular like a corrugated tube (for example, Patent Document 3).

JP 2007-288972 A Japanese Patent Application Laid-Open No. 7-143639 JP 2003-259528 A

  However, with the corrugated tube protective material described in Patent Document 1, it is difficult to change the specifications finely according to the diameter of the wire harness, so a material considerably larger than the diameter of the wire harness is used, and the place where the protective material is attached However, there is a problem that the whole becomes thicker than necessary, which may affect the mounting on the vehicle. In addition, it is necessary to widen the slit part of the corrugated tube and put it on the wire harness, but this work is difficult because of the high rigidity of the slit part in the mouth opening direction. There was a problem that it could hurt.

  Since the protective materials described in Patent Document 2 and Patent Document 3 can be wound in accordance with the diameter of the wire harness, the diameter at the mounting location is minimized compared to the protective material of the corrugated tube. it can. Moreover, the winding work is also easy. However, unlike the corrugated tube, since the shape is not defined in the winding direction, it is necessary to fix the outer periphery of the protective material with a vinyl tape, a winding band or the like. In addition, in the protective material described in Patent Document 3, even if the uneven portion on one end when the ring shape is made overlapped with the uneven portion on the other end side and held in the annular shape, the attachment to the wire harness is ensured. To make it, I had to fix it with tape.

  The present invention has been proposed in order to suitably solve the above-described problems, and minimizes the increase in the overall diameter at the mounting position of the protective material and allows easy and reliable mounting to the wire harness. It aims at providing the wire harness protective material which can do.

  In order to achieve the above-described object, a wire harness protection material according to the present invention is a thin wire harness protection material that is wound around an outer periphery of a wire harness to protect the wire harness, and is wound around the wire harness. When the ridges extending in the longitudinal direction of the wire harness are continuously provided in the circumferential direction via the connecting portions, irregularities are formed on both surfaces, and both ends are mutually attached when wound around the wire harness. A lock mechanism is provided that overlaps, the inside of the protrusion on the other end is fitted to the outside of the protrusion on the wire harness side end, and the fitting state can be fixed.

  The locking mechanism includes a top side locking portion formed on the outer side on the side surface top portion side of the ridge, and an end portion on the side surface connecting portion side of the ridge at least at an end portion overlapping each other when wound around the wire harness. The connecting portion side locking portion formed on the inner side and overlapped with each other when wound around the wire harness, the top side locking portion of the wire harness side end portion and the connecting portion side locking portion of the other end portion. And can be locked to each other.

  The top side locking part is formed to extend in the direction perpendicular to the longitudinal direction on both outer sides of the top of the ridge, and the connecting part side locking part is on the inner side on both sides of the ridge and is elongated. It is good to extend and form in the direction orthogonal to a direction. In this case, the connecting portion may be formed by a curved surface.

  Moreover, the said connection part and the said connection part side latching | locking part may be formed in the same shape as the top part of the said protruding item | line and the said top part side latching part.

  According to the wire harness protective material of the present invention, since the protective material can be wound in accordance with the diameter of the wire harness, the increase in the overall diameter at the mounting location can be minimized. In addition, since the concave and convex ridges are fitted and fixed by a lock mechanism at the portion where the end portions overlap each other, it can be easily and reliably attached to the wire harness without using vinyl tape or the like.

It is a perspective view showing typically composition of one embodiment of a wire harness protection material concerning the present invention. It is sectional drawing which shows typically a part of cross section in the width direction X of embodiment. It is a perspective view which shows the example of use of embodiment typically. It is explanatory drawing which illustrates typically the method to form the connection part of embodiment. It is sectional drawing which shows the modification of embodiment typically.

  Hereinafter, the wire harness protective material 1 by embodiment of this invention is demonstrated. As shown in FIG. 1, the wire harness protective material 1 according to the present embodiment is made of synthetic resin and has a thin plate shape having irregularities on both surfaces. The material of the wire harness protective material 1 is not particularly limited as long as it can be wound around the wire harness W (see FIG. 3) and has rigidity as the protective material. For example, polypropylene or the like can be suitably used.

  As shown in FIGS. 1 and 2, the double-sided unevenness is formed by providing a plurality of protrusions 2 continuously with each other via a connecting portion 3. Here, when the wire harness protective material 1 is wound around the wire harness W, the protrusion 2 refers to a portion that protrudes on the opposite side to the wire harness W side, that is, on the outside.

  The ridge 2 is formed by a planar top portion 21 and side surfaces 22 that are formed to be inclined so as to spread in the width direction X of the ridge 2 from both ends of the top portion 21 toward the bottom portion. Moreover, the connection part 3 which connects the side part 22 bottom part of the one protruding item | line 2 and the side surface 22 bottom part of the other adjacent protruding item | line 2 is formed by the curved surface.

  Both ends of the top portion 21 of the ridge 2 extend outward in the width direction X from the connecting position with the top portions 21 of the both side surfaces 22, thereby forming a top side locking portion 23. The top side locking portion 23 is continuously formed along the longitudinal direction Y of the ridge 2, and the side surface thereof has substantially the same inclination as the side surface 22 of the ridge 2. Further, a connecting portion side locking portion 24 extending in the width direction X is formed between the top portion 21 of the both side surfaces 22 of the ridge 2 and the connecting portion 3 and close to the connecting portion 3. The connecting portion side locking portion 24 is continuously formed along the longitudinal direction Y of the ridge 2. In addition, the top part side latching | locking part 23 and the connection part side latching | locking part 24 function as a locking mechanism as described in a claim.

  The wire harness protective material 1 is longitudinally formed by extruding a synthetic resin using an extrusion die having substantially the same shape as the cross-sectional shape in the width direction X of the wire harness protective material 1 as shown in FIG. It may be formed continuously with Y. If it does in this way, a width | variety can also be freely manufactured by using the extrusion die corresponding to the width | variety of the wire harness protective material 1 according to the diameter of the wire harness W. If it is wound around the vehicle wire harness W, it may be several tens of cm wide at the maximum. Molding with the maximum width may be performed if a narrow width is required.

  As shown in FIG. 3 and FIG. 4, the wire harness protective material 1 extends each protrusion 2 in the longitudinal direction of the wire harness W so that the gap on the outer periphery of the wire harness W is reduced as much as possible. Wrap around. Then, the other end portion of the wire harness protective material 1 is overlapped with the other end portion so as to be gripped, and the other end portion on the outer side of the ridge 2 on the end portion on the wire harness W side (winding start side). The inner side surface 22 of the ridge 2 on the winding end side is fitted, and the top side locking portion 23 and the connecting portion side locking portion 24 are engaged to fix the fitting.

  At this time, since the connecting portion 3 is formed by a curved surface, it is well-familiar with the outer periphery of the wire harness W when wound around the outer periphery of the wire harness W, and is adjacent to one side surface 22 of the ridge 2. It is easy to fit in the recess formed by the other side surface 22. On the other hand, since the top portion 21 is formed in a flat shape, the number of flat portions on the outer peripheral portion of the entire protective portion increases, in particular, the rigidity against bending is increased, the effect as a protective material is high, and it is easy to hold.

  Further, when the wire harness W is wound around, the bottom opening 26 (see FIG. 2) of the concave portion is positioned on the outer side than the bottom opening 25 (see FIG. 2) of the ridge 2, so that the bottom opening 26 of the concave portion is It spreads in the circumferential direction (width direction X) of the wire harness W. Accordingly, since the bottom opening 25 of the ridge 2 is narrowed, the interval between the connecting portion side locking portions 24 is also narrowed. Therefore, in the portion where the wire harness protective material 1 overlaps, the outer layer connecting portion side locking portion 24 can be firmly locked to the inner layer top side locking portion 23.

  Moreover, since each end surface of the top side latching | locking part 23 and the connection part side latching | locking part 24 has the substantially same inclination as the side surface 22 of the protruding item | line 2, when it mutually latches, It can be efficiently locked without a useless gap between the side face 22 and the side face 22.

  Moreover, since each protruding item | line 2 is extended along the longitudinal direction of the wire harness W, the bending rigidity with respect to the longitudinal direction Y is high, and a protection part is kept linearly. In addition, stronger protection can be achieved by widening the wire harness protective material 1 and winding it around a plurality of turns.

  In addition, what is necessary is just to use a well-known band clamp etc., in order to fix to the panel hole etc. of a vehicle body, after winding the wire harness protective material 1. FIG.

  As described above, according to the wire harness protective material 1 according to the present embodiment, the wire harness can be wound in accordance with the diameter of the wire harness W, and the diameter of the protective portion can be minimized. In addition, the protruding strips 2 at both ends are fitted to each other at the overlapping portions and are fixed independently by the top side locking portion 23 and the connecting portion side locking portion 24. Becomes unnecessary, and can be easily and reliably attached to the wire harness W. In addition, both work man-hours and parts costs can be reduced. Furthermore, since the wire harness protective material 1 according to the present embodiment can be cut freely with a cutter knife or the like to adjust the size, various types of specifications can be obtained without preparing many types of molds corresponding to the wire harness W. Can be easily accommodated.

  In addition, as shown in FIG. 5, while forming the top part 21 and the connection part 30 which are flat instead of a curved surface, both ends of the connection part 30 of the protruding item | line 2 are connected from the connection position with the connection part 30 of the both side surfaces 22. By extending outward in the width direction X, the connecting portion side locking portion 24 may be formed. In this case, the top part 21 and the top part side latching | locking part 23 of the protruding item | line 2 and the connection part 30 and the connection part side latching | locking part 24 are formed in the same shape. Thus, the top part 21 and the top part side latching | locking part 23 of the protruding item | line 2 and the connection part 30 and the connection part side latching | locking part 24 can be used without distinction of the front and back by forming in the same shape. Moreover, when it is set as planar shape with the top part 21 and the connection part 30, it can be made thin as a whole. Even in the case where the connecting portion 30 is formed in a planar shape, the connecting portion side locking portion 24 is formed between the top portion 21 of the both side surfaces 22 of the ridge 2 and the connecting portion 30 and closer to the connecting portion 30. If it does, even if the circumferential direction extension amount of the top side latching | locking part 23 and the connection part side latching | locking part 24 is small, it can be made to latch mutually reliably.

  Moreover, in this Embodiment, although the top part side latching | locking part 23 and the connection part side latching | locking part 24 were each provided in the both sides 22 of the protruding item | line 2, it should be provided only in one side 22 Also good. In that case, it is only necessary to use the force to rewind, and it is only necessary to provide the top side locking portion 23 and the connecting portion side locking portion 24 only on the side surface 22 on the winding direction side. In this case, it replaces with the connection part side latching | locking part 24, the groove | channel in which the top side latching | locking part 23 can be inserted is provided, and you may make it comprise a locking mechanism with this groove | channel and the top part side latching | locking part 23. .

  Further, in the present embodiment, the top side locking portion 23 and the connecting portion side locking portion 24 are provided on all the ridges 2, but when the wire harness W is wound around the assumed minimum diameter wire harness W. Moreover, you may make it provide only in the protruding item | line 2 located in the location which overlaps at least the both ends. In this case, when the wire harness W is wound around the assumed minimum diameter, the top-side locking portion 23 and the connecting portion-side locking portion 24 are formed on all the ridges 2 that overlap each other. When wound around the wire harness W having a diameter larger than the assumed minimum diameter, the top side locking portion 23 and the connecting portion side locking portion 24 are formed on a part of the ridges 2 in the overlapping portions. become.

DESCRIPTION OF SYMBOLS 1 Wire harness protective material 2 Convex strip 21 Top part 22 Side surface 23 Top part side latching | locking part 24 Connection part side latching | locking part 3,30 Connection part W Wire harness

Claims (5)

A thin wire harness protective material for protecting the wire harness by wrapping around the outer periphery of the wire harness,
By providing the ridges extending in the longitudinal direction of the wire harness when wound around the wire harness continuously in the circumferential direction of the wire harness through the connecting portion, irregularities are formed on both sides,
When wound around the wire harness, the lock mechanism is configured such that both ends overlap each other, and the inside of the protrusion on the other end of the wire harness is fitted to the inside of the protrusion on the other end to fix the fitting state. A wire harness protective material comprising: The locking mechanism includes a top-side locking portion formed on the outer side of the side of the side of the ridge and a side connection of the ridge at least at a part of the end that overlaps each other when wound around the wire harness. It consists of a connecting part side locking part formed inside the part side,
The top side locking portion of the wire harness side end portion and the connecting portion side locking portion of the other end portion, which overlap each other when wound around the wire harness, can be locked to each other. The wire harness protective material according to 1. The top side locking portion is formed to extend in the direction perpendicular to the longitudinal direction on both outer sides of the top of the ridge,
The wire harness protection according to claim 1, wherein the connecting portion side locking portion is formed to extend in a direction orthogonal to a longitudinal direction on both side surfaces of the ridge. Wood.   The wire harness protective material according to claim 3, wherein the connecting portion is formed by a curved surface.   The wire harness according to claim 1 or 2, wherein the connecting portion and the connecting portion side locking portion are formed in the same shape as the top portion of the protruding line and the top portion side locking portion. Protective layer.

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