JPH09137881A - Clamp provided with insulation cap for splice part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make insulation protection of a splice part of a wire harness by one resin molding and to position and arrange the wire harness inside an automobile. SOLUTION: A cylindrical insulation cap part 13 in which a splice part S to which wire ends are collectively welded is inserted and held is integrated with a clamp 10 provided with a wire harness fixing part 11 and a locking part 12 to a vehicle body. The wire harness fixing part is a thin and long flat plate, and the cylindrical or square cylindrical insulation cap part with one closed end 13a and another open end 13b is integrated with one side part in its longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp provided with an insulating cap for a splice portion, and more specifically, a portion for insulating and protecting a splice portion formed by intensively welding electric wire ends is provided integrally with a clamp for a wire harness. It is a thing.

[0002]

2. Description of the Related Art In a wire harness installed inside an automobile, when a wire is branched and connected, conventionally, as shown mainly in FIGS. 7A and 7B, the insulation coating of the wire Wb to be connected is stripped. To expose the core wire, and crimp and crimp the core wires together with the crimp terminal 1 to form the splice portion S,
The outer periphery of the splice portion S was wound with an adhesive tape 2 for insulation treatment.

In the above-mentioned intermediate splice which forms the splice part in the middle of the electric wire, it is not possible to perform the splicing collectively, so that it is troublesome and the number of branch parts from the wire harness is large, resulting in a complicated structure. Therefore, FIG.
As shown in (A) and (B), the spliced portion S may be formed by peeling off the ends of the electric wire group to be connected and collectively exposing the exposed core wires by concentrated welding by a method such as ultrasonic welding. .

In order to protect the insulation, the splice portion S formed by the above-mentioned concentrated welding is covered with a cylindrical resin insulating cap 3 which is closed at one end and opened at the other end, and protrudes from the opening edge of the insulating cap 3. The outer periphery of the electric wire Wb, whose ends are concentrated and welded, is tape-wound around the fixing tongue piece 3a to hold the insulating cap 3. Further, in this state, as shown in FIG. 9, the electric wire Wb is held along the outer circumference of the main wire Wa of the wire harness W / H by winding a tape.

The wire harness W / H is provided with a clamp 5 for positioning and mounting the clamp 5 on the body of an automobile.
The vehicle body locking portion 7 which is attached to a and protrudes from the wire harness fixing portion 6 is inserted and locked in the through hole of the vehicle body to position and wire the wire harness W / H to the vehicle.

[0006]

As described above, the wire harness W / H has an insulating cap 3 for insulating and protecting the splice portion S and a clamp for installing the wire harness W / H on the vehicle body. 5 is required and two resin molded products must be used, which causes a problem of high cost. Further, the position where the branch line Wb and the main line Wa are wound and held may be close to the mounting position of the clamp 5. In this case, the mounting position of the clamp 5 cannot be changed. Since the insulating cap 3 has to be attached to the opposite side, there is a problem that workability is poor. Further, the electric wire Wb of the central connection part
Is a process of winding a tape around the insulating cap 3 to fix it,
It is necessary to wind the tape around the main line Wa and hold it.
There is a problem in that it requires a lot of work because it requires two tape winding operations.

The present invention has been made in view of the above problems, and an integrally formed insulating cap portion for insulating and protecting a centrally welded splice portion is formed on a vehicle body locking clamp to reduce the number of parts and the number of working steps. The purpose is to reduce.

[0008]

In order to achieve the above object, the present invention provides a wire harness fixing portion and a wire harness fixing portion according to claim 1.
A cylindrical insulating cap portion for inserting and holding a splice portion in which electric wire ends are intensively welded is integrally provided in a clamp provided with a locking portion to the vehicle body, and an insulating cap for a splice portion is provided. It provides a clamp.

In the clamp according to the first aspect, among a large number of electric wire groups constituting the wire harness, an electric wire group having a splice portion intensively welded to an end is branched from a wire harness main line to correspond to a clamp mounting position. When the clamp is positioned and attached to the outer circumference of the wire harness, the splice portion is inserted and held in an insulating cap portion integrally formed with the clamp. When installing the wire harness to the car body, insert the car body locking part provided on the clamp holding the splice part insulatively into the locking hole of the car body and wire the wire harness to the required position of the car. There is. As described above, according to the above clamp, the splice portion of the wire end can be insulated and protected by one resin molded product, and the wire harness can be positioned and routed in the vehicle body of the automobile.

According to a second aspect of the present invention, the wire harness fixing portion is in the form of an elongated flat plate, and the insulating cap portion having a cylindrical shape or a rectangular tube shape having one end closed and the other end opened is integrally formed on one side in the length direction thereof. It is provided.

In the clamp, it is preferable that the wire group in which the splice portion is inserted into the opening of the insulating cap portion is tape-wound and held together with the wire harness main line and the wire harness fixing portion of the clamp. That is, in the flat wire harness fixing portion, the splice portion is inserted into the insulating cap portion in a state where the opposite side of the splice portion insertion side is tape-wrapped together with the wire harness trunk line, and then the tip splice portion is inserted. The electric wire group inserted into the insulating cap is tape-wound and held on the wire harness main line and the wire harness fixing portion on the side opposite to the side where the tape is previously wound. If you wind the tape like this,
Of the tape windings at both ends of the flat plate-shaped fixing portion, one tape winding can also serve as a tape winding for winding and holding the electric wire group inserted in the insulating cap around the trunk line.

According to a third aspect of the present invention, the wire harness fixing portion is a band type and includes a band locking portion and a band extending from the band locking portion, and the vehicle body engaging member is provided from an outer surface on one side of the band locking portion. In addition to projecting the stopper part, the cylindrical insulating cap part having one end closed and the other end opening projecting from the other outer surface of the band locking part via a flexible support piece.

In the clamp, the electric wire group having the splice portion inserted into the opening of the insulating cap portion is held by winding the tape around the wire harness main line. That is, a band is wound around the outer periphery of the wire harness main line, the band is locked to the band locking part, and the clamp is attached to the wire harness, the splice part is inserted into the insulating cap part, and then the tip splice is inserted. The wire group in which the part is inserted into the insulating cap is wound around the main wire harness tape. Alternatively, the splice portion may be inserted into the insulating cap portion before being wound around the wire harness, and then the band may be wound around the trunk line and the insulating cap portion may be held by winding the tape around the trunk line.

As described above, according to the present invention, the clamp is provided with the insulating cap portion. Therefore, the electric wire group having the tip splice portion inserted in the insulating cap portion is simply wound on the wire harness main line with a tape to form the insulating cap portion. It is possible to maintain the state in which the splice portion is inserted and the state in which the splice portion is fixed to the outer periphery of the wire harness trunk line. Therefore, it is necessary to fix the electric wire group to the tongue piece of the conventional insulating cap with a tape winding and the tape to the wire harness trunk line, and to perform the tape winding operation twice. It is possible to do more and more winding work.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments shown in the drawings. As shown in FIG. 1, a clamp 10 including an insulating cap for a splice portion according to the first embodiment of the present invention includes a wire harness fixing portion 11 fixed to the outer periphery of a wire harness W / H and a through hole 15 a of a vehicle body 15. And a vehicle body locking portion 12 for inserting and locking in
A cylindrical insulating cap portion 13 is integrally formed with the wire harness fixing portion 11. The insulating cap portion 13
Is for branching from the main line Wa of the wire harness W / H and inserting and holding the splice part S in which electric wire ends are intensively welded.

The wire harness W / H is used for the vehicle body 1
5, the wire group Wb is arranged at the clamp mounting portion corresponding to the through hole 15a of the wire 5 so that the tip splice portion S is positioned.
More branched.

The wire harness fixing portion 11 is in the form of an elongated flat plate that is long in the length direction of the wire harness W / H, and has tapering protrusions 11 at both ends in the length direction.
a and 11a are projected from an upper surface 11c opposite to the wire harness wiring surface 11b.

The vehicle body engaging portion 12 is a shaft portion 1 projecting from a central portion of an upper surface 11c of the wire harness fixing portion 11.
2a and a pair of locking blades 12b that are inclined and project from the upper end of the shaft 12a. The locking blade 12b has a stepped portion 12c at its tip end that engages with the peripheral edge of the through hole 15a of the vehicle body 15. The locking blade 12b is bent to pass through the through hole 15 and then restored to restore the stepped portion 12c. Is fixed to the through hole 15a to fix the wire harness to the vehicle body.

The insulating cap portion 13 has a cylindrical shape having a closing portion 13a at one end and an opening 13b at the other end, and is integrally provided on one side portion in the length direction of the wire harness fixing portion 11. . In the present embodiment, a flexible support piece 14 is provided on one side of the wire harness fixing portion 11, and the insulating cap portion 13 is connected to the wire harness fixing portion 11 via the support piece 14, and The harness W / H is extended along the length direction.

The clamp 10 is connected to the wire harness W / H.
In the case of attaching the wire harness W / H, the wire harness wiring surface 11b of the flat wire harness fixing portion 11 is brought into contact with the clamp attachment portion of the wire harness W / H. At this time, the splice part S of the wire group Wb branched outside the main line Wa of the wire harness W / H and the opening 13b of the insulating cap part 13 are opposed to each other.

In the above state, as shown in FIG. 3A, the right side wire harness fixing portion 11x located on the opposite side of the wire group Wb is wound around the outer circumference with the tape 20 together with the main wire Wa of the wire harness W / H. Holding.

Then, a wire group Wb branched from the trunk line Wa
The splice part S at the tip of the
Insert from inside 3b. Then, as shown in FIG. 3B, the wire group Wb is connected to the wire harness fixing portion 11x.
Wire harness fixing portion 11y on the opposite side and the main line W
A tape 21 is wound around and held on a.

As described above, the splice portion S is inserted and held in the insulating cap portion 13, the electric wire group Wb is held in the main wire Wa, and the main wire W, which has been conventionally wound by tape.
The attachment to the wire harness fixing part 11 for a is
It is possible to wind the tape 21 once.
In other words, the tape winding process can be performed once instead of the three times of tape winding process that conventionally used to wind each tape.

When it is necessary to ensure waterproofness of the splice portion S in the insulating cap portion 13, the inside of the insulating cap portion 13 is filled with a sealing agent such as silicon or hot melt.

As described above, in the clamp 10 in which the splice portion S is inserted and held in the insulating cap portion 13, when the wire harness W / H is attached to the vehicle body, the vehicle body locking portion 12 is inserted into the through hole 15a of the vehicle body 15. To lock.

FIGS. 4 and 5 show a clamp 10 of the second embodiment. The clamp 10 does not have the flexible support piece 14 shown in the first embodiment, but the insulating cap portion 1 is provided.
3'is directly provided on one side of the wire harness fixing portion 11 so as to be continuous. Specifically, the stepped protrusion 1 is provided at the center of the upper surface 11c of the wire harness fixing portion 11 in the length direction.
1d is provided, and a rectangular tubular insulating cap portion 13 'extends from the upper surface of the protruding portion 11d to the wire harness wiring surface 11b.
Are integrated.

Further, the vehicle body engaging portion 12 'is provided on the upper surface of the projecting portion 11d, and a pair of shaft portions 12a' are provided so as to project left and right in the figure with a space therebetween, and the upper end thereof is connected to the connecting piece 12 '.
They are connected by d '. A pair of front and rear locking blade portions 12b 'are projected from the connecting piece 12d' in a folded state, and step portions 12c 'are provided at the tips of these locking blade portions 12b'. That is, the vehicle body engaging portion 12 'of the second embodiment has a hollow shape that does not have a shaft portion in the central portion unlike the vehicle body engaging portion 12 of the first embodiment.

The clamp 10 of the second embodiment is the first
The splice part S, which is used in the same manner as in the embodiment and is concentrated and welded, is inserted into the insulating cap part 13 ′, and the wire group Wb having the splice part S at the tip is fixed to the wire harness fixing part 11 and the wire harness main line Wa with the tape 21. doing.

FIG. 6 shows a clamp 20 of the third embodiment, in which the wire harness fixing portion 21 is of band type. That is, the wire harness fixing portion 21 has a band locking portion 21b having an insertion hole 21a.
And a band 22c extending from the band locking portion 21b. A sawtooth-shaped locking groove 21d is provided on one surface of the band 21c, and a locking piece (not shown) that engages with the locking groove 21d is projected from the inner walls of the insertion hole 21a facing each other. By engaging the locking groove 21d of 21c with the locking piece, the band 21d can be locked at a predetermined position.

A vehicle body engaging portion 22 having the same shape as that of the first embodiment is provided on one outer surface (left side surface in the figure) of the band engaging portion 21b. Further, a flexible supporting piece 24 is provided on the other outer surface (upper surface in the figure) of the band engaging portion 21b so that one end is closed 23a and the other end opening 23b is formed through the supporting piece 24. Cylindrical insulation cap 2
3 is projected.

In the clamp 20 of the third embodiment, the band 21c is wound around the clamp mounting portion of the wire harness W / H, and the band 21c is inserted into the insertion hole 21.
Insert into a and lock. Then, the splice portion S at the tip of the wire group Wb is inserted through the opening 13b of the insulating cap portion 13. Then, the wire group Wb is fixed by winding a tape (not shown) together with the main wire Wa of the wire harness W / H. In addition, after inserting the splice part S into the insulating cap part 23, the band 21c may be wound around the wire harness main line Wa and locked, and then the insulating cap part 23 may be fixed to the wire harness main line Wa by tape winding.

As described above, also in the clamp 20 of the third embodiment formed as a band type, since the insulating cap portion 23 is integrally provided, the splice portion S can be insulated and protected by the clamp 20. Further, since the insulating cap portion 23 is projected from the clamp by the flexible support piece 24, it is possible to position the insulating cap portion 23 at a required position on the outer peripheral position of the wire harness main line Wa.

[0033]

As is apparent from the above description, in the clamp according to the present invention, the cap for insulating and protecting the splice portion provided by intensively welding the wire group ends is integrated with the clamp for fixing the wire harness to the vehicle body. Since it is formed in two, the two parts of the clamp and the insulating cap can be made into one part. Since the number of parts can be reduced in this way, cost reduction can be achieved.

Further, since the insulating cap portion is formed integrally with the clamp, the work of fixing the clamp to the wire harness main line and the work of fixing the branched electric wire group having the terminal splice part to the main line can be performed. . Therefore,
It is possible to reduce the required number of times of tape winding and reduce the number of working steps.

Further, conventionally, when the clamp and the insulating cap are separate bodies and they are mounted close to the wire harness main line, it was necessary to separate the insulating cap from the mounting position of the clamp. Since the clamp and the insulating cap are integrated, the above-mentioned problems do not occur and workability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a clamp provided with an insulating cap for a splice portion and a wire harness according to a first embodiment of the present invention.

FIG. 2 is a side view showing a state in which a clamp attached to a wire harness is attached to a vehicle body.

3A and 3B are plan views showing a work process of attaching a clamp to a wire harness.

FIG. 4 is a perspective view showing a clamp according to a second embodiment.

FIG. 5 is a perspective view showing a state in which the clamp of the second embodiment is attached to a wire harness.

FIG. 6 is a perspective view showing a clamp according to a third embodiment.

7A and 7B are perspective views showing a conventional splice portion connected by crimp terminals.

FIG. 8A is an exploded perspective view showing a splice portion and an insulating cap connected by concentrated welding, and FIG. 8B is a side view showing a state in which the splice portion is insulated and protected by the insulating cap.

FIG. 9 is a side view showing a state in which a vehicle body mounting clamp is attached to a conventional wire harness.

[Explanation of symbols]

 10 Clamp 11 Wire Harness Fixing Part 12 Car Body Locking Part 13 Insulation Cap Part 13a Closed 13b Opening S Splice Part W / H Wire Harness Wa Main Line Wb Branch Line

Claims (3)

[Claims] 1. A clamp having a wire harness fixing portion and a vehicle body locking portion is integrally provided with a cylindrical insulating cap portion for inserting and holding a splice portion in which electric wire ends are intensively welded. Clamp with a characteristic splice insulation cap. 2. The wire harness fixing portion is in the form of an elongated flat plate, and is integrally provided on one side portion in the length direction thereof with a cylindrical or rectangular tubular insulating cap portion having one end closed and the other end opened. A clamp comprising the splice insulation cap according to claim 1. 3. The wire harness fixing portion is of a band type and comprises a band locking portion and a band extending from the band locking portion, and the vehicle body locking portion is provided from an outer surface on one side of the band locking portion. 2. The cylindrical insulating cap portion, which is projectingly provided and has one end closed and the other end opening, is projectingly provided via a supporting piece which is more flexible than the other outer surface of the band locking portion. Clamp with insulating cap for splice part of.