JP3164338B2 - Encapsulated insulation structure for all wire connections - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collective joint for connecting exposed conductors at the ends of a covered electric wire in the same direction and collectively connecting the exposed electric wires. Encapsulation in a cap body to protect the insulation
The present invention relates to a sealing insulation structure of a connection portion.

[0002]

2. Description of the Related Art The collective connection of a group of electric wires in the same direction (see FIG. 2) is often used as a circuit connecting means of a wire harness for an automobile. The conductors 4 are aligned in the same direction, the electric wires 2 are stretched in the same direction, and the assembled exposed conductors 4 are heat-welded (resistance welding) or ultrasonically welded to form a collective connection portion 3 for circuit connection. .

[0003] A heat-shrinkable tube (7) or an insulating cap (not shown) made of a heat-shrinkable material is covered on the collective connection portion (3), and these are heat-shrinked to be tightly attached to the collective connection portion (3). , Fit the insulating cap 8 made of resin,
Measures are taken to insulate the collective connection 3.

[0004]

Of the above-mentioned conventional insulating means, those using the heat-shrinkable tube 7 and the heat-shrinkable material insulating cap require a heat-shrinkage treatment, so that the work is complicated and troublesome. , Resulting in high costs. In the case where the insulating cap 8 is used, the insulating cap 8 is easily detached when it receives a tearing force for tearing the electric wire 2 from the collective connection portion 3 due to a pulling load applied between the drawn electric wires. A tape winding operation of fully co-winding and fixing the base of the insulating cap 8 in the posture to the electric wire 2 by the tape winding 9 is indispensable, and similarly, the insulating operation of the collective connection portion 3 is complicated, time-consuming, and costly.

The present invention solves the above-mentioned disadvantages of the prior art, simplifies the insulation work, and has a good tear resistance.
An object of the present invention is to provide a sealed insulation structure of a collective connection portion of electric wires .

[0006]

SUMMARY OF THE INVENTION In order to solve the above technical problems, the sealed insulation structure of the electric wire collective connection portion is described as follows. Alternatively, a soft resin / rubber cap to be fitted into the welded and integrated collective connection is inserted into the collective connection, and the cover following the collective connection is loosely inserted. Forming a bottomed cylinder having a covering surrounding zone to be fitted around, and further comprising a wall thickness of the covering surrounding zone;
A clamp ring of a plastic metal ring with the whole embedded in the middle is provided, and the inner peripheral surface of the coating surrounding zone is crimped and fixed to the wire coating portion by plastic deformation by caulking only the clamp ring to enclose the collective connection portion Insulating structure "
It has become.

[0007]

The sealing of the electric wire collective connection part of the present invention having the above configuration is completed.
The edge structure is the same as that of the above-mentioned “enclosure enclosure
The cap body provided with the
When the outer surrounding zone is in a position to surround the covered portion of the electric wire group and the outer periphery of the outer surrounding zone is crimped by a hand tool, the soft outer surrounding zone is very easily compressed and deformed and is present in the outer surrounding zone. Since the plastic metal ring clamp ring is plastically deformed and contracted, the inner peripheral wall portion of the cap-side coating surrounding zone is pressed against the outer periphery of the covering portion of the electric wire group, fixed and easily removed. Without being attached to the collective connection portion, and the collective connection portion can be kept in an insulated state. Then, even if the covering portion to which the covering surrounding zone is pressed is subjected to a strong pressing force, the covering surrounding zone acts as a cushioning material interposed between the covering surrounding zone and the clamp ring, thereby causing damage to the covering portion. There is no fear.

If the strength of the clamp ring is set to an appropriate value in consideration of the workability of the caulking process and the expansion resistance after plastic deformation, the above-mentioned clamp ring fixed to the covering portion of the electric wire group is fixed. In the fitting setting posture, there is no possibility that the fitting setting posture is easily loosened or the insulating cap is disengaged due to the external force of the electric wire which is expected to be generated at the collective connection portion of the automobile wire harnesses.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given based on embodiments. That is, in automotive wiring harnesses, wire of the present invention one embodiment of using the wire mutual connection for the circuit configuration one
With reference to FIG.
The encapsulated insulating structure of the embodiment includes an exposed conductor 4 at the end of the insulated wire 2.
Are assembled in the same direction, and an insulating cap 1 that covers the collective connection portion 3 integrated by ultrasonic welding or the like is mainly used.
As an integral part, the insulating cap 1 has a coating surrounding zone 5 which will be described in detail below, and a clamp ring 6 which is inserted in the middle of the thickness of the coating surrounding zone 5.

[0010] More specifically, the insulation cap 1 is connected to the collective connection portion 3.
In the state of being covered with a wire, a covering-enclosed zone 5 enclosing the outer periphery of the covering 10 of the electric wire 2 drawn out in the same direction from the collective connection portion 3 is formed at the bottom opening portion at the bottom opening portion , and easily formed by external force. It is formed of a thin body of a soft resin or a soft rubber that can be deformed by compression, and only the coating surrounding zone 5 has a large thickness enough to insert the clamp ring 6.

In the middle of the thickness of the coating surrounding zone 5, a clamp ring 6 of a plastic metal ring having plasticity at room temperature is inserted so as to be entirely embedded. Soshi
In the free state of the clamp ring 6, the collective connection part 3 is inserted from the lower end opening of the covering surrounding zone 5, and the collective connection part 3 and the covering 1 of the electric wire 2 following the collective connection part 3 are inserted.
The outer peripheral portion of the sleeve 0 is loosely fitted to the insulating cap 1.

The clamp ring 6 of this embodiment is
A short cylindrical metal ring made of brass thin band material,
Insert the insulation cap 1 into a mold for injection molding and insert it into the coating surrounding zone 5 simultaneously with the molding of the insulating cap 1 or a slit in the coating surrounding zone 5 of the insulating cap 1 formed separately. , Is inserted by means such as press-fitting a separate clamp ring 6.

After the above-mentioned insulating cap 1 is covered with the collective connecting portion 3, the outer periphery of the coating surrounding zone 5 is pressed down by a hand tool to compressively and plastically deform the clamp ring 6, thereby forming the coating surrounding zone on the outer periphery of the coating 10. To cover and fix.

In the above embodiment , the encapsulation of the electric wire collective connection portion 3 is completed.
The edge structure has the above-described effect, and the collective connection portion 3 is insulated by an insulating cap.
In addition to effectively insulating and protecting the wire harness, even if the wire harness receives the currently predicted “external force of tearing of the collective connection portion 3 pulling the electric wires drawn out of the collective connection portion 3”, the wire harness withstands the external force of tearing and operates normally. There is no danger of breaking the proper covering posture.

The setting of the clamp ring 6 by compression plastic deformation can be performed simply by pressing with a hand tool, and the insulating cap setting operation is more difficult than the heat processing setting and tape winding setting operation of the heat shrink tube having the conventional structure. However, the cost of forming the circuit connection of the wire harness can be reduced by simplifying and improving the efficiency and the workability.

[0016]

As described above, the electric wire package of the present invention
The encapsulation insulation structure of the connection part is that the exposed conductor at the end of the insulated wire is aligned in the same direction and the
In those Kutsugaechaku, electrostatic withstand the tearing force of the wire
Effective insulation without damaging the wire sheath or impairing the sealing
In addition to having the performance of protection, it is excellent in workability of covering set to the collective connection part, streamlining insulation measures of the collective connection part and reducing cost, forming a circuit to connect wires of wire harness This has the effect of promoting cost reduction.

[Brief description of the drawings]

FIG. 1 shows an insulation cap of an electric wire according to an embodiment of the present invention;
(A) is a perspective view thereof, (B) is a front view thereof, and (C) is a front view of the used state and the covered state.

FIG. 2 shows a conventional electric wire insulation cap, and FIG.
(B) is a front view showing its structure and use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation cap 2 Insulated electric wire 3 Batch connection part 4 Exposed conductor 5 Insulation surrounding zone 6 Clamp ring 7 Heat shrink tube 8 Conventional insulation cap 9 Tape winding 10 Insulation

Continuation of the front page (56) References Japanese Utility Model Showa 55-160071 (JP, U) Japanese Utility Model Showa 52-25286 (JP, U)

Claims (1)

(57) [Claims] 1. A cap made of a soft resin / rubber material in which exposed conductors at ends of a covered electric wire of a wire harness for an automobile are aligned in the same direction and press-fitted or welded and fitted into a united joint portion formed integrally. Body, form a bottomed cylindrical body having a coating surrounding zone that loosely inserts the collective connection portion and loosely covers the covering portion following the collective connection portion, and further has a wall thickness of the coating surrounding zone. A clamp ring of a plastic metal ring with the whole embedded in the middle is provided, and the inner peripheral surface of the coating surrounding zone is crimped and fixed to the wire coating part by plastic deformation by caulking only the clamp ring to enclose the collective connection part A sealed insulation structure for the joint connection of electric wires, characterized by an insulating structure.