JP2013078173A - Protector for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a width of a protector from being increased, into which a plurality of wiring materials that are externally packaged with a corrugate tube are inserted.SOLUTION: There is provided a protector into which three or more wiring materials each formed by externally packaging an electric wire with a corrugate tube are positioned, held, and inserted, the protector including a protector body having a bottom wall and both side walls, and a cover put to cover an opening facing the bottom wall of the protector body. A fitting groove for positioning in which a peripheral edge is fitted to a part of a valley part of each of the plurality of corrugate tubes is provided to an entrance and/or an exit at both length-directional sides of the protector body, and while fitting grooves for two corrugate tubes among the fitting grooves are provided in parallel on the opening side, the fitting grooves for other corrugate tubes are provided as a U-shaped groove by recessing an inner side of the fitting groove on the opening side or as an oblique inner-side arcuate groove recessed arcuately while connecting with an inner side between the two fitting grooves on the opening side.

Description

  The present invention relates to a protector for a wire harness, and more specifically, when a group of wires covered with a plurality of corrugated tubes is inserted into one protector, each corrugated tube is positioned and held efficiently without increasing the width of the protector. It relates to a protector that can.

Conventionally, wire harnesses that are wired to vehicles such as automobiles are bundled with tape and are used in places where it is necessary to regulate the wiring route of the wire harness or where it is necessary to protect the wire harness from external interference materials. Has a protector made of a resin molded product, and a wire harness is inserted into the protector.
The work of bundling wires together with tape is likely to result in variations in the finish if the worker's skill level is different, and it also takes work time, so recently the wires have been passed through a corrugated tube made of a resin molded product. In many cases, the corrugated tube to be packaged protects and protects the electric wire group.

  When passing a group of wires covered with a corrugated tube through the protector, at least the inner peripheral surface close to the outlet and inlet of the protector is provided with concavities and convexities that fit in the peaks and valleys of the corrugated tube that covers the wire group, and the corrugated tube is positioned and held Are often connected. Moreover, when the length of a protector is comparatively short, the inside of a protector may be penetrated in the state which coat | covered the corrugated tube.

  When there are a plurality of sets of electric wires to be passed through the protector and each corrugated tube is sheathed in each electric wire group, these corrugated tubes are often housed in parallel and inserted through the protector. For example, in the protector 100 shown in FIG. 6 proposed in Japanese Patent Application Laid-Open No. 11-196517, three housing grooves 101 through which the corrugated tubes are inserted are provided in parallel, and the tips of the respective housing grooves 101 are fitted in the valleys of the corrugated tubes. A mating protrusion 102 is provided. The three corrugated tubes 110 respectively sheathed in the electric wire groups W1 to W3 are inserted into the housing grooves 101 arranged side by side, and the protrusions 102 are fitted and positioned in the valleys of the corrugated tube 110, and then the protector cover It is combined with covering.

JP 11-196517 A

  In many cases, protectors installed in automobiles are arranged in a very limited space. As described above, when a plurality of corrugated tubes such as three are inserted at the entrance and / or the outlet of the protector, the arc-shaped accommodation groove into which each corrugated tube is inserted is formed in the width direction X ( In addition to being provided in parallel with the corrugated tube in the direction perpendicular to the corrugated tube insertion direction, it is necessary to project a protrusion that fits into the trough of the corrugated tube from each arcuate recess, and the width of the protector is widened. However, if the installation space for the protector is small, the protector cannot be installed.

  The present invention has been made in view of the above-mentioned problems, and without increasing the width of the protector, it is possible to position and hold three or more corrugated tubes that are externally mounted on an electric wire so that they can be inserted, and can be installed in a space where the space width is narrow. The challenge is to provide a protector.

In order to solve the above-mentioned problems, the present invention is a protector for positioning and holding three or more wiring members having a corrugated tube sheathed on an electric wire,
A protector body having a bottom wall and both side walls, and a lid that covers an opening facing the bottom wall of the protector body;
At the inlet and / or outlet on both sides in the longitudinal direction of the protector body, a positioning fitting groove whose peripheral edge is fitted to a part of the valley portion of each of the plurality of corrugated tubes is provided, and two of the fitting grooves are provided. The fitting groove for the corrugated tube is provided in parallel with the opening side, while the other fitting groove for the corrugated tube is provided with a U-shaped groove by recessing the inner side of the fitting groove on the opening side. Alternatively, a protector is provided in which the back side between the two fitting grooves on the opening side is recessed in an arc shape and provided as an oblique back side arc-shaped groove.

  Among the fitting grooves for the corrugated tube, the U-shaped groove is formed by stacking and inserting at least two corrugated tubes, and the oblique inner arc-shaped groove has a smaller arc than the two fitting grooves on the opening side. It is preferable to use for small corrugated tubes.

  Two to three projecting pieces are provided on the inner peripheral surface of the arc-shaped peripheral edge of the fitting groove for positioning so as to be spaced apart in the axial direction so that they can be fitted into two to three valleys of the corrugated tube. It is preferable to do.

In the protector of the present invention having the above-described shape, the same number of fitting grooves as the number of corrugated tubes to be inserted are provided in the width direction X (corrugated tube insertion direction) at the inlet and / or outlet of the protector through which three or more corrugated tubes are inserted. In the direction perpendicular to the longitudinal direction L), a plurality of corrugated tubes are stacked and inserted, and the diagonal arc-shaped groove is inserted into the diagonally back side, so that the protector's It is possible to prevent the width direction X from spreading. Therefore, a protector can be installed in the location where the width direction X of the protector arrangement space is narrow.
In addition, the corrugated tube inserted into the back side of the U-shaped groove and the corrugated tube inserted into the oblique back side arc-shaped groove are held down by the corrugated tube passed through the lid side. Since it is sufficient to hold the corrugated tube, workability can be improved.
Further, if the corrugated tube is positioned and held at the fitting groove for positioning at the entrance / exit of the protector, the corrugated tube can be parallel-wired without being twisted even in the intermediate region of the protector sandwiched between the entrance / exit, and the protector does not spread in the lateral width direction. The inside can be inserted.

  Further, the two fitting grooves provided on the opening side are not arranged in parallel in the width direction X, but provided in parallel in the length direction L (the corrugated tube insertion direction orthogonal to the width direction X). The width direction X can be made narrower.

  As described above, according to the protector of the present invention, it is necessary to position and hold the wiring material covered with a plurality of corrugated tubes, and the fitting groove with the corrugated tube provided at the inlet or / and the outlet of the protector. Is not provided in parallel in the width direction X orthogonal to the corrugated tube insertion direction of the protector, but is a U-shaped groove that allows the corrugated tubes to be stacked and inserted, or an arc-shaped groove that is inserted obliquely to the rear side, An increase in dimension in the direction X can be prevented. As a result, even when the dimension of the installation space in the width direction X is narrow, the protector can be installed without difficulty.

It is a perspective view of the protector of the embodiment of the present invention. It is a perspective view of the state which inserted the wiring material which covered the corrugated tube in the said protector. It is a top view of the entrance of the protector. It is a top view of the exit of the protector. It is a schematic plan view of the inlet_port | entrance of the protector of other embodiment. It is a perspective view which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiments are shown in FIGS.
The protector 1 of the embodiment is externally mounted on a required area of a wire harness routed in an automobile.

  The protector 1 includes a protector main body 2 and a lid 3 that is inserted into the protector main body 2 through a wire harness and covers the upper surface opening (side opening in FIG. 1) to be locked. The protector body 2 and the lid 3 are made of a resin molded product.

  In the space where the protector 1 is arranged in the automobile, as shown in FIG. 1, the width direction X is narrower than the depth direction D, and the protector 1 is bent in the depth direction D from the entrance 4 to the exit 5 of the protector. It has a shape. The wire harness is inserted into the inlet 4 from above and pulled out from the outlet 5 upward.

  The protector body 2 is composed of a bottom wall 7 and side walls 8 and 9, and has a concave cross-sectional shape with an open top surface facing the bottom wall 7. In the present embodiment, as shown in FIG. 1, the bottom wall 7 is disposed so as to be in the vertical direction, the upper surface opening facing the bottom wall 7 is opened on the side surface, and the lid 3 is covered. Are the upper and lower walls. Therefore, the inlet 4 and the outlet 5 positioned on the upper surface of the protector 1 are provided at both ends in the length direction of the side wall 8 serving as the upper wall.

  The wire harness that is inserted into the protector 1 includes first to third wiring members 10, 11, and 12. Positions where the corrugated tubes 20, 21, 22 are sheathed to the position where they are inserted into the inlet 4 of the protector 1 and are pulled out from the outlet 5 in the electric wire groups constituting the first to third wiring members 10, 11, 12. The corrugated tubes 23, 24, and 25 are externally provided. Inside the protector 1 between the inlet 4 and the outlet 5, the first to third wiring members 10, 11, and 12 are not sheathed.

  As described above, since the three corrugated tubes 20 to 22 are inserted into the inlet 4 of the protector 1 and the three corrugated tubes 23 to 25 are also inserted into the outlet 5, it is necessary to position and hold these corrugated tubes.

  The corrugated tubes 20 to 25 are made of a resin that has been widely used in the related art, and annular crests and troughs are alternately provided in the axial direction so that they can be expanded and contracted. An electric wire group serving as a wiring member is inserted into each of the corrugated tubes 20 to 25, and both ends of the corrugated tube in the length direction are fixed by winding an adhesive tape around the electric wire group.

Since the diameters of the electric wire groups of the first to third wiring members 10 to 12 inserted into the inlet 4 are substantially the same, they are covered with corrugated tubes 20 to 22 having the same size.
The inlet 4 of the protector 1 into which the corrugated tubes 20 to 22 are inserted is provided so as to protrude stepwise at one end side in the length direction of the side wall 8 of the protector body 2 and bend to the side.

As shown in FIG. 3, a fitting groove for positioning and holding the corrugated tube is provided in the portion of the inlet 4 provided in the side wall 8, adjacent to the length direction L. Specifically, a U-shaped fitting groove 31 through which the corrugated tubes 20 and 22 are stacked and an arc-shaped fitting groove 32 through which the corrugated tube 21 is inserted are cut out from the front end opening. Yes.
In this way, the inlet 4 is provided with the U-shaped fitting groove 31 and the arc-shaped fitting groove 32 in parallel on the opening side adjacent to the length direction L instead of the width direction X. The depth of the U-shaped fitting groove 31 that is recessed is set to about twice the depth of the arc-shaped fitting groove 32, and the depth is changed.

  Three protrusions 31 a and 32 a are provided on the inner peripheral surfaces of the U-shaped fitting groove 31 and the arc-shaped fitting groove 32 at intervals. The protrusion 31a is inserted into a trough between the peaks of the corrugated tubes 20 and 22 so that the corrugated tubes 20 and 22 can be positioned and held. Further, the protrusion 32a is inserted into a valley portion sandwiched between the peak portions of the corrugated tube 21 so that the corrugated tube 21 can be positioned and held.

  Of the first to third wiring members 10 to 12 drawn from the outlet 5, the outer diameters of the first and second wiring members 10 and 11 are substantially the same as the inlet 4 side, so the corrugated tube 20, It is covered with corrugated tubes 23 and 24 of the same size as 21. Since a part of the electric wire group of the third wiring member 12 is drawn out from the outlet provided on the bottom wall 7 side, the diameter of the third wiring member 12 drawn out from the outlet 5 is reduced and is covered with a small corrugated tube 25. .

  As shown in FIG. 4, the outlet 5 of the protector 1 that pulls out the corrugated tubes 23 to 25 is provided on the other end side in the longitudinal direction L of the side wall 8 so as to be inclined in the vertical direction. In the same way as the inlet 4 portion, the outlet 5 portion is widened in the length direction L when the protector 1 is mounted, and a fitting groove for positioning and holding the corrugated tube is provided in the outlet 5 in the length direction L. Adjacent to each other.

  Specifically, large-diameter arc-shaped fitting grooves 33 and 34 for inserting the corrugated tubes 23 and 24 through the corrugated tubes 23 and 24 are juxtaposed in the longitudinal direction L with a gap in the length direction L. A small-diameter arc-shaped oblique rear side fitting groove 35 is provided in the gap between the mating grooves 33 and 34 and the corrugated tube 25 is inserted on the bottom wall 7 side, and the arcs of the fitting grooves 33, 34, and 35 are continuously formed. doing.

  Three protrusions 33a to 35a are provided at intervals on the inner peripheral surface of the arc-shaped fitting grooves 33 to 35. The protrusions 33a to 35a have thicknesses that can be inserted into valleys sandwiched between peaks of the corrugated tubes 23 to 25, respectively.

  A lock frame 8r is provided on the outer surface along the open ends of the side walls 8 and 9 of the protector main body 2, and a lock claw 3r that is inserted into and locked to the lock frame 8r is provided at an end edge in the width direction of the lid 3.

  At the time of attaching the protector 1 to the wire harness including the first to third wiring members 10 to 12 sheathed with a corrugated tube, the third wiring member 12 is first placed on the upper surface in the protector body 2 of the protector 1 as shown in FIG. Insert through opening.

  The third wiring member 12 has a corrugated tube 22 on the inlet side and a corrugated tube 25 on the outlet side. On the inlet 4 side, the corrugated tube 22 is inserted to the back end of the U-shaped fitting groove 31, and the projection 31 a of the arc portion at the back end of the fitting groove 31 is inserted into the trough of the corrugated tube 22 to maintain positioning. To do. On the outlet 5 side, the corrugated tube 25 is inserted into the central small-diameter arc-shaped fitting groove 35 on the oblique back side, and the arc-shaped projection 35a is inserted into the valley of the corrugated tube 25 to be positioned and held.

  Next, the first wiring member 10 is inserted from the upper surface opening of the protector body 2. The first wiring member 10 has a corrugated tube 20 on the inlet side and a corrugated tube 23 on the outlet side. On the inlet 4 side, the corrugated tube 20 is inserted into the U-shaped fitting groove 31, overlapped with the corrugated tube 22 put in front, and the protrusions 31 a on both sides of the fitting groove 31 are inserted into the valleys of the corrugated tube 20. Position and hold. On the outlet 5 side, the corrugated tube 23 is inserted into the large-diameter arc-shaped fitting groove 33 on one side, and the arc-shaped protrusion 33a is inserted into the trough of the corrugated tube 23 to be positioned and held.

  Finally, the second wiring member 11 is inserted from the upper surface opening of the protector body 2. The second wiring member 11 has a corrugated tube 21 on the inlet side and a corrugated tube 24 on the outlet side. On the inlet 4 side, the corrugated tube 21 is inserted into the arc-shaped fitting groove 32, and the protrusion 32 a of the fitting groove 32 is inserted into the valley of the corrugated tube 21 to be positioned and held. On the outlet 5 side, the corrugated tube 24 is inserted into the large-diameter arc-shaped fitting groove 34 on the other side, and the arc-shaped protrusion 34a is inserted into the valley of the corrugated tube 24 to be positioned and held.

  Thus, since the corrugated tubes 20 to 25 are positioned and held on the inlet 4 and outlet 5 sides of the protector body 2, the first to third wiring members 10 to 12 do not twist between the inlet 4 and the outlet 5. Parallel wiring.

  Thereafter, the lid 3 is put on the protector main body 2 to be locked, and until the lid 3 is put, the opening side of the third wiring member 12 is held by the corrugated tube 20 on the inlet side, and the protector 25 on the outlet side is The opening side is blocked by the corrugated tubes 23 and 24. Therefore, the lid 3 can be covered in a state where the two first and second wiring members 10 and 11 are pressed with fingers.

And it is necessary to position and hold the corrugated tubes 20 to 22 and 23 to 25 sheathed on the three first to third wiring members 10 to 12 at the inlet 4 and the outlet 5 of the protector 1, respectively. Since the corrugated tubes 22 and 25 that are externally mounted on 12 are configured to be inserted through the back side at either the inlet 4 or the outlet 5, the three corrugated tubes are not inserted in a parallel state. The width is not widened.
Moreover, the corrugated tube positioning and holding fitting grooves provided in parallel facing the opening side are limited to two, and the width orthogonal to the length direction of the protector (corrugated tube insertion direction L) when the protector is mounted on the vehicle. Since the fitting grooves 31 to 35 for corrugated tube positioning and holding are arranged in parallel in the length direction L, not in the direction X, the width direction X can be narrowed. As a result, the protector 1 can be arranged even when the width of the arrangement space of the protector is narrow.

  The present invention is not limited to the above embodiment, and the corrugated tube positioning holding fitting groove provided at the outlet may have the same shape as the inlet side if the size of the corrugated tube sheathed on the wiring material drawn out from the protector outlet is the same diameter. Good. Conversely, the inlet side may have the same shape as the outlet side.

FIG. 5 shows another embodiment.
In the above embodiment, there are three wiring members inserted into the protector, but in the embodiment of FIG. 5, there are four wiring members, and the first to fourth wiring members are respectively located at positions corresponding to the inlet and the outlet of the protector. The corrugated tube is covered. U-shaped fitting grooves 50 and 51 are provided adjacent to the inlet and the outlet as fitting grooves for positioning and holding four corrugated tubes, respectively. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the U-shaped fitting groove 50, two corrugated tubes 60 and 61, which are packaged on the first and second wiring members, are stacked and inserted to be positioned and held. Further, two corrugated tubes 62 and 63 sheathed on the third and fourth wiring members are stacked and inserted into the U-shaped fitting groove 51 to be positioned and held.

  As described above, when the U-shaped fitting groove for positioning and holding a plurality of corrugated tubes is provided adjacent to the length direction, the width direction dimension can be reduced and the width of the protector installation space is narrow. It will also be possible to place a protector.

DESCRIPTION OF SYMBOLS 1 Protector 2 Protector body 3 Lid 4 Inlet 5 Outlet 10 1st wiring material 11 2nd wiring material 12 3rd wiring material 20-25 Corrugated tube 31 U-shaped fitting groove
32, 33, 34, arc-shaped fitting groove 35 fitting groove on the oblique back side X width direction L length direction D depth direction

Claims (4)

A protector for positioning and holding three or more wiring members having a corrugated tube sheathed on an electric wire,
A protector body having a bottom wall and both side walls, and a lid that covers an opening facing the bottom wall of the protector body;
At the inlet and / or outlet on both sides in the longitudinal direction of the protector main body, positioning fitting grooves whose peripheral edges are fitted to a part of valley portions of the plurality of corrugated tubes are provided, and two of the fitting grooves While the fitting groove for the corrugated tube is provided in parallel to the opening side, the fitting groove for the other corrugated tube has a U-shaped groove formed by recessing the back side of the fitting groove on the opening side. Or a protector provided as an oblique back-side arcuate groove continuously recessed in an arcuate shape on the back side between the two fitting grooves on the opening side.   Among the fitting grooves for the corrugated tube, the U-shaped groove is formed by stacking and inserting at least two corrugated tubes, and the oblique inner arc-shaped groove has a smaller arc than the two fitting grooves on the opening side. The protector according to claim 1, wherein the protector is used for a small corrugated tube.   As an arrangement in which two or three projecting pieces are provided on the inner peripheral surface of the arc-shaped peripheral edge of the positioning fitting groove at intervals in the axial direction, and can be fitted to two to three valleys of the corrugated tube. The protector according to claim 1 or 2.   The protector according to any one of claims 1 to 3, wherein the two fitting grooves provided on the opening side are not juxtaposed in the width direction but juxtaposed in the length direction.

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