JPH11164454A - Wiring harness clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a retaining member movable with respect to a board unit fixed to a wiring harness, while the retaining member is positioned and held at an original position. SOLUTION: A board unit 11 is fixed to a wiring harness by wrapping both its ends with tapes. A pair of reverse-L shaped frames are made to protrude from both the widthwise sides of the board unit 11 to form a guide part 12, which has a opening in its top surface and a hollow coupling groove 12d. One of the ends in the longitudinal direction of the guide part 12 is opened, and the other end is closed. The base part 16a of a retaining member 16 from which retaining wing 16c protrudes is attached to the coupling groove 12d, so as to be freely slidable by inserting the base part 16a through the opened end of the guide part 12, and at the same time, a spring 15 which energizes the retaining member 16 is inserted into the coupling groove 12d. After the spring 15 and the retaining member 16 having been incorporated in the guide part 12, a stopper 13 which is made to protrude from one of the widthwise ends of the board unit 11 on the open end side is laid down and retained with a retainer 14, protruding from the other widthwise end so as to close the opened end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness clamp used for fixing a wire harness routed to an automobile to a vehicle body, and more particularly, to a locking hole formed in the vehicle body and attached to the wire harness. When a displacement of the locking portion of the clamp occurs, the locking portion of the clamp is moved to absorb the displacement and the clamp can be attached to the vehicle body.

[0002]

2. Description of the Related Art As a clamp of this type, a clamp 1 shown in FIG. 7 is generally used, and the clamp 1 is formed by winding both ends of a substrate 1a with a tape 2 to form a wire harness W.
/ H, and the blade portion 1c protruding from the shaft portion 1b protruding from the substrate portion 1a is deformed into a locking hole 3a formed in the vehicle body 3 and inserted and locked.

In mounting the wire harness W / H of the clamp 1, a jig is erected at a predetermined position on a wire harness assembly work table, and the clamp 1 held by the jig is mounted on the wire harness W / H. As shown in FIG. 8, a dimension L1. L2 and L3 are each dimensionally controlled.

However, the dimensions L1 and L
Even if L2 and L3 can be kept within the dimension intersection (for example, ± 5 mm), a cumulative error occurs, and it is difficult to manage the dimension L between the clamps 1A and 1B at both ends. Also, in order to keep the dimensions L1, L2, L3 between the clamps within the dimension intersection, it is necessary to very strictly manage the dimensions between the jigs.

Furthermore, even if the accuracy of the dimension between clamps is increased when assembling the wire harness, a positional deviation may occur between the clamp and the locking hole formed in the vehicle body when mounted on a vehicle.

Further, if the dimension between the clamps of the wire harness is 100 mm (± 0) and the dimension between the locking holes on the vehicle body side is 10 mm
Even if it is possible to avoid the dimensional crossing of both at 0 mm (± 0), as shown in FIG. 9 (A), actually, the clamp and the locking hole are locked one by one. The next clamp is rotated around the shaft portion 1b of the clamp inserted into the locking hole and in the locked state, and the locking blade 1c of the next clamp is engaged as shown in FIG. 9 (B). Since it goes to the locking hole from diagonally above the stop hole, it cannot be inserted into the locking hole.

[0007] To solve the above-mentioned problem, a conventional method has been proposed.
No. 4,469,91 proposes a movable clamp shown in FIG. The clamp is configured such that a separate locking member 6 is slidably fitted in a fitting groove 5a formed in a fixed guide plate 5 fixed to the wire harness, and then the fitting groove 5a is formed.
Are closed by stoppers 5b.

[0008]

In the movable clamp shown in FIG. 10, the locking member 6 can be moved in accordance with the position of the locking hole on the vehicle body side. Since the locking member 6 is completely free with respect to the guide plate 5, between the fixed guide plate 5 fixed to the wire harness side and the locking member 6 fixed to the vehicle body side due to vibration or the like during traveling of the vehicle. Rattle is likely to occur and causes abnormal noise.

Further, when attaching the clamp to the wire harness, as described above, a jig is erected on the wire harness assembling work table, and the engaging portion (the engaging member 6) of the clamp is gripped by the jig. Thus, the board portion (fixed guide plate 5) is fixed to the wire harness by tape winding, but when the locking member 6 is freely moved with respect to the fixed guide plate 5, the mounting position of the fixed guide plate 5 to the wire harness is changed. There is a serious problem that cannot be determined and dimension control between clamps cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and enables dimensional control between clamps to be attached to a wire harness, does not generate unusual noise due to rattling when the vehicle is running, and furthermore, when the vehicle is mounted to the vehicle, It is an object of the present invention to absorb a displacement of the locking hole on the side and to lock the locking portion of the clamp in the locking hole even if the positional deviation occurs.

[0011]

According to the present invention, a pair of inverted L-shaped frame portions project from both sides in the width direction on a substrate portion on which both ends are tape-fixed to a wire harness. Then, a guide portion having an opening in the center upper surface and having a hollow fitting groove is formed, and the frame portion of the guide portion has one end in the length direction as an opening and the other end closed. A lock member is slidably attached to the guide portion through the opening, and a spring material for urging the lock member is inserted into the fitting groove, and the spring and the lock member are connected to each other by the guide. After assembling to the part, the stopper part protruding from one end in the width direction of the substrate part on the opening side is tilted down, protruded to the other end side, latched on the locking claw, closed the opening, and The retaining member is held at a set position by being biased by a spring. It provides a clamping wire harness.

A coil spring is preferably used as the spring to be inserted into the guide portion, and one spring may hold the locking member at one end of the guide portion, or may engage the locking member with the guide portion. , Two springs may be inserted to hold the locking member at the center in the length direction of the guide portion.

[0013] Further, as a spring inserted into the guide portion, an extendable bellows portion integrally formed in a state protruding from the locking member may be used. The bellows portion may be provided only on one side of the locking member, or may be provided on both sides.

As in the present invention, when the locking member is urged by a spring to a guide portion provided on a substrate portion fixed to the wire harness and held at a set position, the locking member is fixed by a jig. When holding and fixing the board to the wire harness with tape,
The board portion can be positioned and held, and the clamp can be attached to the wire harness with high dimensional accuracy.

Further, when the wire harness is routed and fixed to the automobile, even if there is a displacement between the locking hole on the vehicle body side and the locking member positioned by the spring, the wire harness is engaged against the spring. By moving the stop member, the displacement can be absorbed and the lock member can be locked in the lock hole. Further, when the vehicle is running, the board portion fixed to the wire harness is positioned and held by the spring with respect to the locking member inserted and locked in the locking hole of the vehicle body, so that rattling does not occur.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment, in which a clamp 10 is a substrate 1 made of a rectangular flat plate.
1 are tape winding portions 11a and 11b at both ends in the length direction, and a long guide portion 12 is provided between these two tape winding portions.
Is provided.

In the guide section 12, a pair of inverted L-shaped frame sections 12a and 12b project from both sides of the board section 11 in the width direction, and an opening 12c is provided in the center upper surface. A hollow fitting groove 12d is provided. The guide section 12
One end in the length direction of the frame portions 12a and 12b
e and the other end is provided with a stepped portion 12f protruding from the substrate portion 11 to close the fitting groove 12d.

Further, a stopper portion 13 protruding from one end in the width direction of the substrate portion 11 is protruded through a thin hinge 13a outside the opening 12e side, while a locking claw 1 is provided on the other end side.
4, the stopper portion 13 is bent in the direction of the arrow, and the tip of the stopper portion 13 is locked to the locking claw 14, thereby closing the opening 12e of the fitting groove 12d.

As shown in FIG. 1 (B), first, the coil spring 15 is inserted into the fitting groove 12d with the opening 12e opened, and then the shaft portion 16b is inserted into the guide portion 12 from the base portion 16a. It is erected and the locking blade 16 is
The guide part 12 is inserted by inserting the base part 16a of the locking member 16 protruding from the fitting groove 12d and projecting the shaft part 16b from the upper surface opening 12c. Thereafter, the stopper portion 13 is bent and locked to the locking claw 14 to close the opening 12e.

In this state, the locking member 16 urged by the coil spring 15 and located on the opening 12e side
As a result, the guide 12 is prevented from coming off, and is held at the position of the left end of the guide 12 in the drawing. This position is set as the original position of the locking member 16 with respect to the substrate portion 11.

The attachment of the clamp to the wire harness is performed, for example, by using a floor wire harness W / H shown in FIG.
, The trunk line W where the branch lines W-2 and W-3 are branched
When five clamps are attached between −1, the conventional immovable clamp 1 shown in FIG. 7 is used as a clamp at both ends, and the movable clamp 10 is used as three intermediate clamps. The conventional non-movable clamp 1 is used as the clamps at both ends because the dimensions from the branch line W-2 to the branch line W-3 are formed with high precision within the dimensional tolerance, and these branch lines W-2 and W This is because, when the clamp adjacent to -3 is not movable, the accuracy of the dimension L5 between the clamps at both ends can be obtained. Note that it is not always necessary to use a conventional immovable clamp as a clamp at both ends, and the movable clamp 1 of the present invention is used as all the clamps.
0 may be used.

The clamp 10 is fixed to the wire harness W / H on a wire harness assembly work table. That is, the clamp 10 is a jig erected on an assembly work table, and fixes the board portion 11 by winding the tape 18 around the wire harness W / H while holding the locking member 16. At that time, the position of the locking member 16 is urged by the coil spring 15 and held at the original position. Based on this original position, the wire harness W / H of the clamp 10 shown in FIG.
Is set, and the dimension between the clamps is L1.
L2. L3. L4 is set.

As described above, when the clamp is attached to the wire harness W / H, the locking member 16 of the clamp 10 is positioned and held by the coil spring 15, so that dimensional control can be easily performed. Moreover, since the board portion 11 is held against the locking member 16 via the coil spring 15 without play, the board portion 11 can be fixed to the wire harness W / H in a stable state during the tape winding operation. .

As shown in FIG. 3, when the wire harness W / H to which the clamp 10 is attached is routed to an automobile, if the original position of the clamp matches the position of the locking hole 21 provided in the vehicle body 20, As shown in FIG.
6 is moved into the locking hole 21 without moving the locking blade 16c.
Can be inserted and locked. On the other hand, when the locking hole 21 of the vehicle body is displaced, the locking member 16 is moved against the coil spring 14 as shown in FIG.
The locking hole 21 and the locking blade 16c can be aligned and locked.

FIGS. 5A and 5B show a second embodiment.
The difference from the first embodiment is that the fitting groove 12
d, the two coil springs 15A and 15B
6 on both sides. That is, first, the first coil spring 15A is inserted into the fitting groove 12d of the guide portion 12, then the locking member 16 is inserted, and finally, the second coil spring 15B is inserted, and the two coil springs 15A and 15B are used. The locking member 16 is urged to move the guide portion 12
It is located at the center in the longitudinal direction of the (substrate unit 11), and this position is used as the original position.

With the configuration of the second embodiment, it is easier to move the center locking member 16 in either the left or right direction to match the locking hole on the vehicle body side than in the first embodiment. it can. Other configurations and operations are the same as those of the first embodiment, and thus the same reference numerals are given and the description is omitted.

FIGS. 6A and 6B show a third embodiment.
As the spring for urging the locking member 16, instead of a coil spring, the elastic bellows 3 formed integrally with the locking member 16 can be used.
0 is used. That is, the base 16a 'of the locking member 16'
The bellows 30a, 30b that are longer than the left and right sides of the
The dimension L6 between the tips of the bellows portions 30a and 30b is set smaller than the length L7 of the fitting groove 12d of the guide portion 12. Therefore, the bellows portions 30a and 30b are accommodated in the fitting groove 12d in a contracted state, and the locking member 16 is positioned and held at the center.

Also in the third embodiment, the locking member 1
6 is urged by the bellows portions 30a and 30b on both sides to be positioned and held at the original position, so that when the clamp is attached to the wire harness, the substrate portion 11 does not rattle and the tape can be fixed with good workability. Further, when the cable is misaligned with the locking hole on the vehicle body side when the wiring is fixed to the vehicle body, the locking member 16
When one of the right and left is moved, the bellows on the moving side contracts, and the bellows on the opposite side expands and follows.

According to the third embodiment, since the locking member and the spring are integrally formed, the number of parts is reduced, and
The work of attaching to the guide portion can be performed only once, and the work efficiency can be improved.

[0030]

As is apparent from the above description, according to the present invention, the locking member which is inserted and locked into the locking hole of the vehicle body with respect to the board portion of the clamp which is fixedly wound on the wire harness by tape. Since the movable member can be moved and held at the original position by a spring, various problems that occur when the locking member can be moved freely with respect to the substrate portion as in the related art can be solved. be able to.

First, when the clamp is attached to the wire harness, the substrate does not move with respect to the locking member held by the jig. it can. Second, after the wire harness is fixed to the vehicle via a clamp, no rattling occurs between the locking member that is locked to the vehicle body and the substrate portion that is fixed to the wire harness, and the vehicle is driven during traveling. Generation of abnormal noise due to rattling due to vibration can be prevented. Third, when the clamp is locked in the vehicle body locking hole, if the positional shift has occurred, the positional shift can be absorbed by moving the locking member.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a clamp according to a first embodiment, and FIG. 1B is an exploded perspective view.

FIG. 2 is an explanatory view showing a method of attaching the clamp to a wire harness.

FIG. 3 is a perspective view showing a state where the clamp is attached to a wire harness.

FIGS. 4A and 4B are cross-sectional views showing a state where the clamp is locked in a locking hole of a vehicle body.

FIG. 5A is a perspective view showing a clamp according to a second embodiment, and FIG. 5B is an exploded perspective view.

FIG. 6A is an exploded perspective view of a clamp according to a third embodiment, and FIG. 6B is an explanatory diagram for comparing a total length of a locking member and a length of a guide portion.

FIG. 7 is a perspective view showing a conventional example.

FIG. 8 is a schematic diagram showing a problem of the conventional example.

FIGS. 9A and 9B are schematic diagrams showing another problem of the conventional example.

FIG. 10 is a perspective view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Clamp 11 Substrate part 12 Guide part 12a, 12b Frame part 12c Upper surface opening 12d Fitting groove 12e One end opening 13 Stopper part 14 Locking claw 15, 15A, 15B Spring 16 Locking member 16a Base 16b Shaft 16c Locking blade 18 tape 30, 30a, 30b bellows W / H wire harness

Claims (4)

[Claims] 1. A pair of inverted L-shaped frame portions projecting from both sides in the width direction are protruded from a substrate portion, both ends of which are tape-wrapped and fixed to a wire harness, and have an opening at a central upper surface and a hollow fitting. A guide portion provided with a groove is formed, and the frame portion of the guide portion has an opening at one end in the length direction and closes the other end, and is locked in the fitting groove of the guide portion from the opening. The base of the locking member having the blades protruded is slidably mounted, and a spring material for urging the locking member is inserted into the fitting groove, and the spring and the locking member are connected to the guide portion. After assembling, the stopper portion protruding from one end in the width direction of the substrate portion on the opening side is tilted down, protruding from the other end side, latched to the locking claw to close the opening, and the spring in the guide portion is closed. Characterized in that the locking member is held at a set position by being urged by a wire harness. Clamp. 2. The wire harness clamp according to claim 1, wherein a coil spring is used as a spring to be inserted into the guide portion, and the spring is provided as one spring and the locking member is held at one end of the guide portion. 3. A coil spring is used as a spring to be inserted into the guide portion, and two springs are inserted with the locking member interposed therebetween, and the locking member is held at the center in the length direction of the guide portion. 2. The clamp for a wire harness according to 1. 4. A retractable bellows portion integrally formed in a state of being protruded from the locking member as a spring inserted into the guide portion, and the bellows portion is arranged on one side or both sides of the locking member. The clamp for a wire harness according to claim 1, wherein