JPH0879949A - Clip with joint function - Google Patents

Abstract

PURPOSE: To connect respective wires with no slack while reducing the occupation space. CONSTITUTION: A harness fixing part 16 has substantially circular cross-section embracing the outer circumference of a wire harness 12. A plurality of grooves 18 are juxtaposed in the inserting direction of the wire harness 12 on the outer circumference of the harness fixing part 16 and a bus bar 32 is press fitted in each groove 18 while exposing a wire press contact part 32a. Insulation coating 13a of each wire 13 is torn at the wire press contact part 32a and the wires are interconnected electrically through the bus bar 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip for holding a wire harness and fixing it to a vehicle body, and a clip with a joint function used for electrical connection between electric wires.

[0002]

2. Description of the Related Art Conventionally, a joint box 1 as shown in FIG. 5 is used to electrically connect desired wires among a plurality of wires constituting a wire harness.
The joint box 1 includes a box body 4 having a plurality of fitting holes 3 in a box-shaped case 2 opening in one direction.
Is accommodated. The busbar 5 is accommodated in the case 2, and each leg portion 6 of the busbar 5 projects into each fitting hole 3. Then, with the box body 4 accommodated in the case 2, the fitting hole 3 opened at one end is
By fitting a terminal 8 provided at the tip of each electric wire 7, the electric wires 7 are electrically connected to each other via the bus bar 5. In general, the joint box 1 having such a configuration is fixed to the outer peripheral portion of the wire harness 10 with a tape 9 due to a problem such as an installation place.

[0003]

However, the joint box 1 is composed of the case 2 and the box body 4.
In addition to being made of a member, the bus bar 5 must be housed inside, so there is a limit to miniaturization. Therefore, when the joint box 1 is fixed to the outer peripheral portion of the wire harness 10 with the tape 9 as shown in FIGS. 6 and 7, the wire harness 10 and the joint box 1
A space is formed between the tape 9 and the tape 9. This space does not play any role in terms of function, and becomes a so-called dead space S, which occupies a space larger than the size of the joint box 1. Therefore, such a space S
The wiring harness 10 must be installed in consideration of the above, and there is a problem that the wiring cannot be installed depending on the location.

Further, the joint box 1 needs to be arranged such that its longitudinal direction is along the extending direction of the wire harness 10 in order to suppress the dead space S as much as possible. Therefore, the fitting hole 3 opens laterally, and when fitting the terminals 8, the distances from the electric wires 7 are different, but the terminals 8 are attached to the electric wires 7 in advance. Therefore, the electric wire 7 closer to the fitting hole 3 to be connected is loosened, and a so-called extra length portion is generated.

In view of the above-mentioned problems, it is an object of the present invention to provide a clip with a joint function which can occupy a small space and can electrically connect each electric wire without slackening.

[0006]

In order to achieve the above object, in the invention according to claim 1, a wire harness insertion direction is provided in an outer peripheral portion of a harness fixing portion having a substantially circular cross section for holding an outer periphery of the wire harness. A plurality of groove portions arranged in parallel along each other are formed, and a bus bar provided with a substantially U-shaped wire pressure contact portion exposed in each groove portion is press-fitted.

According to a second aspect of the present invention, the harness fixing portion includes a first fixing portion and a second fixing portion, and the first fixing portion forms a vehicle fixing portion that is fixed to the vehicle body.
The groove is formed so that the wire pressure contact portion of the bus bar press-fitted into the fixed portion is exposed.

According to a third aspect of the present invention, a pressure contact joint member is attached to the harness fixing portion, and a pressing portion for forcibly pressing the electric wire into the wire pressure contact portion is formed in the pressure contact joint member.

[0009]

According to the structure of the invention described in claim 1, a wire harness is held by the harness fixing portion, and among the electric wires constituting the wire harness, a predetermined electric wire is provided in a groove portion formed in the harness fixing portion. When they are respectively arranged, the insulation coating of each wire is torn by the wire pressure contact portion exposed in the groove, and the core wire thereof comes into contact. Thus, the electric wires are electrically connected to each other via the bus bar.

According to the second aspect of the present invention, by fixing the vehicle fixing portion to the vehicle body, the wire harness is formed while the required electric wires among the electric wires forming the wire harness are electrically connected to each other. Position with respect to the vehicle body.

According to the third aspect of the invention, when the electric wires are arranged in the respective groove portions of the harness fixing portion and the pressure welding joint member is mounted, the electric wires are pressed against the electric wire pressure welding portions by the pressing portions. , Forced electrical connection to each other.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows that a clip 11 with a joint function according to the present invention holds a wire harness 12 (a plurality of electric wires 13 is bundled by a tape 14 wound at an arbitrary interval) and is fixed to a vehicle body 15. It shows a state in which some of the electric wires 13 are electrically connected to each other. The clip 11 includes a harness fixing portion 16 that holds the wire harness 12 and a first fixing portion 17 that is fixed to the vehicle body 15.
And a second fixing portion 19 having a plurality of groove portions 18, and the pressure contact joint member 20 is attached to the groove portion 1
The electric wire 13 disposed inside the electric wire 8 is held.

The first fixing portion 17 comprises a vehicle fixing portion 21 fixed to the vehicle body 15 and a first harness holding portion 22 for guiding a half of the outer peripheral surface of the wire harness 12 and having a substantially semicircular cross section. .

The vehicle fixing portion 21 is a substantially arrow-shaped locking portion 2
3 and elastic pieces 24 extending obliquely outward in the protruding direction from the vicinity of both sides of the locking portion 23. The locking portion 23 is inserted into the through hole 15a formed in the vehicle body 15 while elastically deforming the blade portions 23a on both sides, and after being inserted,
It returns to its original shape and is locked. Further, the elastic piece 24 is pressed against the vehicle body 15 to ensure the locked state.

Engagement receiving portions 25 and 26 are formed at both end edges of the first harness holding portion 22, respectively. The lower end side engagement receiving portion 25 is composed of a concave portion 25a and a flat receiving portion 25b extending in the horizontal direction via the concave portion 25a. The upper end side engagement receiving portion 26 has a substantially C-shaped cross-section that opens upward, and an inclined surface 26a is formed at the tip.

The second fixing portion 19 has a second harness holding portion 27 having a substantially semicircular cross section for guiding the remaining half of the outer peripheral portion of the wire harness 12, and an outer peripheral surface of the second harness holding portion 27. , A plurality of ridges 2 arranged side by side in the circumferential direction
And a groove portion 18 formed by 8. Engagement portions 29 and 30 that engage with the respective engagement receiving portions 25 and 26 of the first harness holding portion 22 are formed at both edge portions of the second harness holding portion 27. The lower end side engaging portion 29 is orthogonal to the flat placing portion 29a of the substantially same shape placed on the flat receiving portion 25b of the lower end side engaging portion 25 and the base portion side of the flat placing portion 29a. The contact piece 29b extends downward and contacts the end surface of the flat bearing portion 25b. The tip end of the flat supporting / placing portion 29a is formed in a step shape, and is engaged with the inside of the concave portion 25a of the first harness holding portion 22. On the other hand, the upper end side engaging portion 30 is formed in a substantially U-shaped cross section and holds the tip end portion of the upper end side engaging portion 26.

As shown in FIG. 4, the ridge portion 28 is divided into two in the insertion direction of the wire harness 12, and a gap 31 formed between the two is provided with a conductive plate-shaped bus bar. 32 is press-fitted. The bus bar 32 has a curved shape along the outer peripheral surface of the second harness holding portion 27, and has a substantially U-shaped wire pressure contact portion 32 a at the outer edge.
Are formed at a predetermined pitch. Each wire pressure contact part 32
The width a is formed to have substantially the same width as the core wire 13a, and gradually expands from the middle portion toward the outer edge. Then, in the state where the bus bar 32 is press-fitted into the gap 31, the wire press contact portions 32a are located in the corresponding groove portions 18, respectively. As a result, when the electric wires 13 are respectively arranged in the groove portions 18, the electric wire 13 is cut into the insulating coating 13b by the electric wire pressure contact portions 32a, and the core wires 13a come into contact with each other. In addition, locking protrusions 33 are respectively provided on the outer surfaces of the protrusions 28 located on both sides.

As shown in FIG. 2, the press contact joint member 20 has a crescent shape along the outer peripheral surface of the second harness holding portion 27. This press contact joint member 20 is
It is formed in a concave shape so as to be able to cover the entire protruding portion 28 projecting from the second harness holding portion 27, and escape recesses 34 that allow the insertion of electric wires are formed on both side walls and the inner surface Locking recesses 35 for locking the locking projections 33 are formed on the respective sides. Further, a pressing portion 36 for pressing the electric wire 13 in the locked state is provided on the ceiling surface of the press contact joint member 20 in a protruding manner.

The clip with a joint function having the above structure is used as follows. That is, by attaching the second fixing portion 19 to the first fixing portion 17, the wire harness 12 is held in the cylindrical portion formed by the first and second harness holding portions 22 and 27. More specifically, after the wire harness 12 is brought into contact with the inner surface of the first harness holding portion 22, the flat sheet placing portion 29a is placed on the flat sheet receiving portion 25b, and the contact piece is attached to the end surface of the flat sheet receiving portion 25b. This is performed by engaging the upper end engaging portion with the upper end side engagement receiving portion 26 in a state where the tip end of the flat mounting portion 29a is positioned in the concave portion 25a by abutting.

Then, among the electric wires 13 constituting the wire harness 12, some of the electric wires which are not bundled by the tape 14 are arranged in the respective groove portions 18. in this case,
Since the groove portion 18 is formed along the insertion direction of the wire harness 12, the electric wires 13 are almost connected to each other.
The workability is good because it can be arranged along the line.

Subsequently, the press contact joint member 20 is attached to the harness fixing portion 16 so that the locking projection 33 is locked in the locking recess 35. At this time, the pressing portion 36 formed on the ceiling surface of the press contact joint member 20 presses the electric wire 13 and pushes it into the electric wire press contact portion 32 a of the bus bar 32. As a result, the electric wire 13 is cut at the insulating coating 13a by the edge of the electric wire pressure contact portion 32a, contacts the bus bar 32, and is electrically connected to each other.

In the clip 11 thus attached to the wire harness 12, the groove portion 18 in which the electric wire 13 is arranged is uniformly formed along the outer peripheral surface of the second harness holding portion 27 without being fixed at one place. Therefore, the extra space does not occur due to the partial protrusion to the outer side. That is, with the above configuration, it is possible to achieve the electrical connection between the electric wires while suppressing the expansion of the occupied space to the necessary minimum.

The clip 11 is used for the vehicle fixing portion 2.
By inserting 1 into the through hole 15a formed in the vehicle body 15, the vehicle body 15 is fixed to the vehicle body 15 so that the electric wires can be electrically connected and the wire harness can be positioned.

[0024]

As is apparent from the above description, according to the first aspect of the present invention, a plurality of groove portions are provided on the outer periphery of the harness fixing portion for holding the wire harness in parallel along the insertion direction of the wire harness. Since the electric wires arranged in this groove are electrically connected to each other by the bus bar, it is not necessary to separately provide a joint box as in the conventional case, and the occupied space due to the dead space generated in that case is eliminated. Not only does the problem of expansion not occur, but the positions of the wires do not differ among the wires. That is, the electric connection between the electric wires can be made compact while being fixed to the vehicle body, and the slack of the electric wires can be prevented. Further, since the electric wires can be electrically connected to each other only by disposing the electric wires in the groove, it is not necessary to connect the electric wires to the terminals, and the workability can be greatly improved.

According to the second aspect of the present invention, since the vehicle fixing portion fixed to the vehicle body is formed in the harness fixing portion, the wire harness is positioned with respect to the vehicle body while achieving electrical connection between the electric wires. can do.

According to the third aspect of the invention, since the electric wires are arranged in the groove portion of the harness fixing portion and the pressure welding joint member is mounted, the electric wires are pressed into contact with the electric wire pressure contact portion. The insulation coating is forcibly torn at the wire pressure contact portion, and the core wires come into contact with each other, so that the wires can be reliably electrically connected to each other via the bus bar.

[Brief description of drawings]

FIG. 1 is a perspective view of a clip with a joint function according to the present embodiment.

FIG. 2 is a cross-sectional view of a clip with a joint function according to the present embodiment.

FIG. 3 is a perspective view showing a state in which a clip with a joint function according to the present embodiment is attached to a wire harness.

FIG. 4 is a partially enlarged perspective view of a groove portion.

FIG. 5 is an exploded perspective view of a joint box according to a conventional example.

FIG. 6 is a perspective view showing an example of use of the joint box of FIG.

7 is a cross-sectional view of FIG.

[Explanation of symbols]

 12 wire harness 13 electric wire 15 vehicle body 16 harness fixing portion 17 first fixing portion 18 groove portion 19 second fixing portion 32 bus bar 32a electric wire pressure contact portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Kobayashi 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (3)

[Claims] 1. A plurality of groove portions arranged in parallel along the insertion direction of the wire harness are formed on the outer peripheral portion of a harness fixing portion having a substantially circular cross section for holding the outer periphery of the wire harness, and the inside of each groove portion is formed. A clip with a joint function, in which a bus bar having a substantially U-shaped wire pressure contact portion exposed to the inside is press-fitted. 2. The harness fixing part includes a first fixing part and a second fixing part.
And a fixing portion, wherein a vehicle fixing portion for fixing to the vehicle body is formed on the first fixing portion, and a groove portion for exposing the wire pressure contact portion of the bus bar press-fitted on the second fixing portion is formed. A clip with a joint function according to item 1. 3. A press-joint joint member is attached to the harness fixing portion, and a pressing portion for forcibly pressing the electric wire to the electric wire press-contact portion is formed on the press-joint joint member. Clip with joint function described.