JP2000184551A - Corrugated tube cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugated tube cover wherein an insert operation of a wire harness is made easy for improved workability, a tape winding operation over a corrugated tube is made needless for reduced work processes and cost, and wear or disconnection of an electric wire in an assembled state is prevented. SOLUTION: A band-like cover body 14 which is abutted to the outer periphery of a wire harness 12 is provided, and the vicinity of both ends in its longitudinal direction as tape winding parts 15a and 15b, a rising piece 16 inserted in a slit 13a of a corrugated tube 13 is erected at an outer surface 14b of the cover body. At the upper end of the rising piece, a fixing part 17 which holds both-side end 13c of the corrugated tube 13 with the outer surface of the cover body is provided. An operation for inserting the wire harness 12 into the corrugated tube 13 is performed while the wire harness 12 is bond to a tape 18. With both-side end 13c of the corrugated tube 13 sandwiched between the fixing part 17 and the outer surface of the cover body, a work for winding a tape over the corrugated tube 13 becomes needless.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover used for a corrugated tube for protecting a wire harness to be wired to a vehicle such as an automobile, and more particularly to a cover for a corrugated tube to be attached to a wire harness together with a corrugated tube for covering the wire harness. .

[0002]

2. Description of the Related Art Conventionally, as this kind of cover, there is a cover disclosed in Japanese Utility Model Laid-Open No. 4-86022 shown in FIGS. 16 and 17, for example. The cover 1 has a strip-shaped cover main body 2 and an electric wire biting prevention rib 3 protrudingly provided at an intermediate portion on the inner surface. In the cover 1, the electric wire 6 of the wire harness 4 is prevented from biting into the slit 5a by fitting the rib 3 into the slit 5a of the corrugated tube 5 into which the wire harness 4 is inserted.

As a modification of the cover 1, FIG.
As shown in FIG. 8, the slit 5a
A cover 1 ′ provided with locking portions 7 that engage with both side portions of the corrugated tube 5 opposed to each other through the cover is disclosed in the above-mentioned publication. In this cover 1 ′, when the cover 1 ′ is assembled to the corrugated tube 5, the locking portions 7 are locked to the inner surfaces of both sides of the corrugated tube 5.

[0004]

However, in the conventional cover 1 shown in FIG. 16, (1) when the wire harness 4 is inserted into the corrugated tube 5 from the slit 5a, the wire harness 4 near the insertion portion is Since they are not bound, it is difficult to insert them. (2)
After inserting the wire harness 4 into the corrugated tube 5, the ribs 3 of the cover 1 are fitted into the slits 5 a of the corrugated tube 5, and finally, a tape is wound from above the cover 1 and the corrugated tube 5, and the cover 1 is attached to the corrugated tube 5. Must be fixed. Therefore, the number of working steps increases, the amount of tape consumption increases, and the manufacturing cost increases. (3) Further, since the inner surface of the corrugated tube 5 comes into contact with the electric wire 4 of the wire harness 4 in a state where the assembling work of the cover 1 and the corrugated tube 5 to the wire harness 4 is completed, the electric wire 4 may be worn. is there.

On the other hand, in the conventional cover 1 'shown in FIG. 18, the above-mentioned tape winding work from above the corrugated tube 5 becomes unnecessary.
Since the locking portion 7 projects into the corrugated tube 5,
There is a possibility that the locking portion 7 may hit the wire harness 4 and damage the electric wire 6. The present invention has been made in view of such circumstances, and has as its object to improve the workability by facilitating the work of inserting a wire harness, and to eliminate the need for a tape winding work on a corrugated tube, thereby reducing the number of work steps. Another object of the present invention is to provide a cover for a corrugated tube, which can reduce the cost and reduce the wear and disconnection of the electric wire in the assembled state.

[0006]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 is a corrugated tube cover that is assembled to a wire harness together with a corrugated tube that protects the wire harness. It has a band-shaped cover main body with which the inner surface is brought into contact, the vicinity of both ends in the longitudinal direction of the outer surface of the cover main body is a tape winding portion, and the outer surface of the cover main body between the two tape winding portions is continuous or continuous in the longitudinal direction. A rib extending intermittently and fitted to a slit of the corrugated tube is provided upright, and a fixing portion is provided at an upper end of the rib to hold both side portions of the corrugated tube facing each other through the slit with the outer surface of the cover body. Is provided.

With this configuration, the work of inserting the wire harness into the corrugated tube can be performed in a state where the wire harness is bound with a tape, so that the insertion work is facilitated and the workability is improved. When the cover body and the wire harness fixed to each other with tape are inserted into the corrugated tube, both sides of the corrugated tube are fitted and sandwiched between the fixed portion of the cover body and the outer surface. Thereby, the corrugated tube is fixed to the cover fixed to the wire harness. Therefore, the operation of winding the tape from above the corrugated tube becomes unnecessary, and the number of operation steps and the consumption of the tape are reduced, and as a result, the cost is reduced. Further, in the assembled state of the corrugated tube, the inner surface of the corrugated tube comes into contact with the outer surface of the cover body, that is, the outer surface between both tape winding portions, but does not contact the outer periphery of the wire harness. Moreover,
Since part of the cover does not protrude into the corrugated tube, wear and breakage of the electric wires are prevented.

[0008] The invention according to claim 2 is that,
A plurality of engaging portions respectively fitting into a plurality of outer circumferential grooves provided at predetermined intervals in the axial direction of the corrugated tube are provided so as to protrude at predetermined intervals in the longitudinal direction. According to such a configuration, in the assembled state, the plurality of engaging portions provided on the lower surface of the fixed portion are fitted into the plurality of outer peripheral grooves of the corrugated tube, respectively. Intrusion into the inside is prevented.

The invention according to claim 3 is characterized in that at least one of the inner surface and the outer surface of the cover body is provided with one or more notches extending in the longitudinal direction. According to such a configuration, the cover main body can be easily deformed according to the outer shape of the wire harness with which the inner surface of the cover main body abuts.

[0010]

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

FIG. 1 is an explanatory view showing a procedure for assembling a corrugated tube cover and a corrugated tube according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the cover.

A cover 10 for a corrugated tube (hereinafter simply referred to as a cover) 10 shown in FIG.
Is assembled to the wire harness 12 together with the corrugated tube 13 that covers the wire harness 12 to protect the wire harness 12. In the corrugated tube 13, slits 13a for inserting the wire harness 12 are formed over the entire length in the axial direction, and a plurality of outer circumferential grooves 13b are formed at predetermined intervals in the axial direction.

As shown in FIGS. 2 to 4, the cover 10 has an inner surface 14a on a part of the outer periphery of the wire harness 12. As shown in FIG.
The main body 14 has a belt-shaped cover main body 14 with which the outer peripheral surface 14b of the cover main body 14 is in the vicinity of both ends in the longitudinal direction as tape winding portions 15a and 15b. Both tape winding parts 1
A rib 16 extending continuously in the longitudinal direction and fitted to the slit 13a of the corrugated tube 13 is provided upright on the outer surface 14b of the cover body 14 between 5a and 15b. At the upper end of the rib 16, there is provided a fixing portion 17 for holding both sides 13c, 13c (see FIG. 1) of the corrugated tube 13 facing each other through the slit 13a between the outer surface 14b of the cover main body 14.

The cover 10 is integrally formed of a flexible material such as a synthetic resin material. The cover main body 14 has a longitudinal section in the width direction formed in an arc shape having a predetermined radius of curvature. The predetermined radius of curvature is a wire harness 1 in which a plurality of electric wires 11 are bundled in a circular cross section.
2 is set in accordance with the outer shape of FIG. Rib 16 of cover 10
Are both tape winding portions 15a, 15b of the cover body 14.
And on the outer surface 14b between them, is formed substantially perpendicular to the center in the width direction. The fixing portion 10 is formed so as to protrude from the upper end of the rib 16 to both sides in the width direction, and the lower surfaces of the both protruding portions and the outer surface 14 of the cover body 14 are formed.
b, both sides 13c of the corrugated tube 13 and 1
3c is provided at a height position for holding the same.

[0015] The cover 1 according to the present embodiment thus configured.
And the corrugated tube 13 using the wire harness 1
The procedure for assembling (covering) on 2 is as follows.

First, the inner surface 14a of the cover body 14 is brought into contact with the outer periphery of the wire harness 12, and in this state, the tape 18 is wound around both the tape winding portions 15a and 15b of the cover body 14 and the wire harness 12, respectively. 14 is fixed to the wire harness 12 (see FIG. 1). Thereafter, with the fixing portion 17 of the cover 10 and the slit 13a of the corrugated tube 13 facing in the same direction (for example, upward in FIG. 1), the wire harness 12 and the cover body 14 are inserted into the corrugated tube 13 by the slit 13a.
a, and the rib 16 of the cover body 14 is fitted into the slit 13a of the corrugated tube 13 (see FIGS. 5 and 6). Thereby, the corrugated tube 13
Are clamped between the lower surface of the fixing portion 17 and the outer surface 14b of the cover body 14, and the assembly of the corrugated tube 13 is completed.

As described above, according to the cover 10 according to the present embodiment, since the work of inserting the wire harness 12 into the corrugated tube 13 can be performed in a state where the wire harness 12 is bound by the tape 18, the insertion work is easy. Workability is improved.

When the cover body 14 and the wire harness 12 fixed to each other are inserted into the corrugated tube 13, both sides 13 c, 13 c
c is fitted and held between the fixing portion 17 of the cover main body 14 and the outer surface 14b. Thereby, the corrugated tube 1 is fixed to the cover 10 fixed to the wire harness 12. Therefore, the operation of winding the tape from above the corrugated tube 13 becomes unnecessary, and the number of operation steps and the consumption of the tape are reduced, and the cost is reduced. The reason why the consumption of the tape is reduced is that the length of the tape wound around the tape winding portions 15a and 15b of the cover body 14 and the wire harness 12 is different from that of the conventional cover shown in FIG. This is because it becomes shorter than when the tape is wound from above. Further, both sides 13c, 13c of the corrugated tube 13 are fixed portions 1
7 and the outer surface 14b of the cover body 14, the slit 1 of the corrugated tube 13 is vibrated or the like.
It is possible to prevent the corrugated tube 13 from dropping due to the spread of the corrugated tube 3a, and also to prevent the generation of abnormal noise due to the contact between the side portions 13c, 13c and the cover 10.

Further, when the corrugated tube 13 is assembled, the inner surface of the corrugated tube 13 is connected to the outer surface 14b of the cover body 14, that is, both tape winding portions 15a, 1b.
5b, but does not contact the outer periphery of the wire harness 12 (see FIG. 6). Moreover, since a part of the cover 10 does not protrude into the corrugated tube 13, it is possible to prevent the electric wires 11 from being worn or broken.

Next, a cover for a corrugated tube according to another embodiment of the present invention will be described with reference to FIGS.

FIG. 7 shows the cover 10A according to this embodiment.
As shown in FIG. 10, a plurality of engaging portions 19 respectively fitted in a plurality of outer peripheral grooves 13 b provided at predetermined intervals in the axial direction of the corrugated tube 13 are provided on the lower surface of the fixing portion 17 in the longitudinal direction. Projected at intervals.

The procedure for assembling the corrugated tube 13 to the wire harness 12 using the cover 10A according to this embodiment is as follows.

First, as in the case of the above example, the tape 1
At 8, the cover body 14 is fixed to the wire harness 12 (see FIG. 11). Thereafter, the wire harness 12 and the cover body 14 are inserted into the corrugated tube 13 in the same manner as in the above example, and the rib 16 of the cover body 14 is fitted into the slit 13a of the corrugated tube 13;
The plurality of engaging portions 19 on the lower surface of the fixing portion 17 are fitted into the plurality of outer peripheral grooves 13b of the corrugated tube 13, respectively (see FIGS. 12 and 13). Thereby, the assembly of the corrugated tube 13 is completed.

According to the cover 10A of the present embodiment, in addition to the effects obtained in the above-described example, the plurality of engaging portions 19 of the fixing portion 17 Can be prevented from entering the corrugated tube 13 through the slits 13a. Further, by making the engagement between the engaging portion 19 and the outer peripheral groove 13b dense, it is possible to prevent water from entering the corrugated tube 13 from the slit 13a.

FIG. 14 is a modified example of the cover 10 according to the above example shown in FIG. Cover 10B according to this modification
, One or more (for example, four in this example) notches 2 extending in the longitudinal direction are formed in the inner surface 14a of the cover main body 14.
0 is provided.

According to the cover 10B according to the present embodiment, the wire harness 1 for contacting the inner surface 14a of the cover body 14 is provided.
2, the arc shape of the cover main body 14 can be easily deformed. Thus, the cover 10B can be used for the wire harness 12 having a different outer shape.

The notch 20 may be provided on the outer surface 14b of the cover body 14, or on both the inner surface 14a and the outer surface 14b.

Further, the notch 20 provided in the cover 10B according to the present embodiment can be provided also in the cover 10A according to the other example shown in FIG.

FIG. 15 shows another modification of the cover 10 according to the above example shown in FIG. Cover 1 according to this modified example
0C indicates that the plurality of electric wires 11 have a rectangular cross section (for example,
It is intended to be used for flat corrugated tubes that protect wire harnesses bundled in a rectangular shape. Therefore, in the cover 10C according to the present example, the cover main body 14 'has a rectangular (rectangular) longitudinal section in the width direction. One or more (for example, four in this example) notches 21 extending in the longitudinal direction are provided on the outer surface 14b of the cover body 14 '.

According to the cover 10C of this embodiment, not only can it be used for a wire harness bundled in a rectangular cross section, but also the wire bundled in a circular cross section by deforming the cover body 14 'in the direction of the arrow in FIG. It can also be used for harnesses.

The notch 21 may be provided on the inner surface 14a of the cover body 14 ', or on both the inner surface 14a and the outer surface 14b.

[0032]

As described above, according to the first aspect of the present invention, the work of inserting the wire harness can be facilitated and the workability can be improved. Further, the tape winding work from above the corrugated tube is not required, and the number of man-hours and cost can be reduced. Further, it is possible to prevent the electric wires from being worn or broken in the assembled state.

According to the second aspect of the invention, in addition to the effects obtained by the first aspect,
Since the plurality of engaging portions provided on the lower surface of the fixing portion are fitted into the plurality of outer peripheral grooves of the corrugated tube, it is possible to prevent dust or the like accumulated in these outer peripheral grooves from entering the corrugated tube from the slit.

According to the third aspect of the present invention, in addition to the effects obtained by the first and second aspects of the present invention, the cover main body is easily deformed according to the outer shape of the wire harness with which the inner surface of the cover main body abuts. Can be done. Thereby, it can be used for wire harnesses having different outer shapes.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a procedure for assembling a corrugated tube cover and a corrugated tube according to an example of an embodiment of the present invention.

FIG. 2 is a perspective view showing a cover for a corrugated tube according to an example of an embodiment of the present invention.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIG. 5 is a perspective view showing an assembled state of the corrugated tube cover and the corrugated tube shown in FIG. 2;

FIG. 6 is a longitudinal sectional view of FIG.

FIG. 7 is a perspective view showing a corrugated tube cover according to another example of the embodiment of the present invention.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a plan view of FIG. 7;

FIG. 10 is a front view of FIG. 7;

FIG. 11 is an explanatory view showing an assembling procedure of the corrugated tube cover and the corrugated tube shown in FIG. 7;

FIG. 12 is a perspective view showing an assembled state of the corrugated tube cover and the corrugated tube shown in FIG. 7;

FIG. 13 is a longitudinal sectional view of FIG.

FIG. 14 is a view showing a modification of the corrugated tube cover shown in FIG. 2, and is a side view similar to FIG. 3;

15 is a view showing another modification of the corrugated tube cover shown in FIG. 2, and is a side view similar to FIG. 3;

FIG. 16 is a perspective view showing a conventional corrugated tube cover.

FIG. 17 is a longitudinal sectional view showing an assembled state of the corrugated tube cover and the corrugated tube shown in FIG. 16;

FIG. 18 is a perspective view showing a corrugated tube cover according to another conventional example.

[Explanation of symbols]

10, 10A, 10, 10C Corrugated tube cover 12 Wire harness 13 Corrugated tube 13a Slit 13b Outer groove 13c Side portion 14 Cover body 14a Inner surface 14b Outer surface 15a, 15b Tape winding portion 16 Rib 17 Fixed portion 18 Tape 19 Engagement portion 20, 21 Notch

Claims (3)

[Claims] 1. A cover for a corrugated tube to be assembled to a wire harness together with a corrugated tube for protecting the wire harness, wherein the cover has a band-shaped cover body for bringing an inner surface into contact with an outer periphery of the wire harness. The vicinity of both ends in the direction is a tape winding portion, and a rib extending continuously or intermittently in the longitudinal direction and fitted to a slit of the corrugated tube is provided upright on an outer surface of the cover main body between the tape winding portions. And a fixing portion for holding both sides of the corrugated tube facing each other via the slit between the rib and the outer surface of the cover main body at an upper end of the rib. Corrugated tube cover. 2. A plurality of engaging portions, which are respectively fitted to a plurality of outer peripheral grooves provided at predetermined intervals in an axial direction of the corrugated tube, are provided on a lower surface of the fixing portion at predetermined intervals in a longitudinal direction. The cover for a corrugated tube according to claim 1, wherein the cover is provided. 3. The corrugated tube cover according to claim 1, wherein at least one of an inner surface and an outer surface of the cover body is provided with at least one notch extending in a longitudinal direction.