JPH08288043A - Method for inserting wire in waterproof plug and wire inserting jig - Google Patents

Abstract

PURPOSE: To efficiently and properly insert the end of a covered wire in a waterproof plug. CONSTITUTION: A plurality of holding holes 25 are formed in line on the upper surface of a bottom plate 23 of a box type jig body 22, and a through-hole 29 is drilled through the bottom center of each hole 25. Furthermore, a restricting plate 31 is attached to the lower surface of the bottom plate 23 via a gap 34, and a gap between the bottom of the hole 25 and the upper surface of the plate 31 is taken as a normal projection length (a) of the conductor 3 of a covered wire 1. A waterproof rubber plug 5, when fed under the vibration of the jig body 22, is inserted in each hole 25. Also, when the end of the wire 1 with the conductor 3 exposed is led toward a wire insertion hole 11 of the plug 5, the conductor 3 comes to be exposed through the hole 29 and, then, collides with the upper surface of the plate 31, thereby being stopped against a pushing force. The plug 5 is finally pulled out from the hole 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inserting a terminal of a covered electric wire into a wire insertion hole of a waterproof rubber plug by protruding it by a predetermined dimension, and a jig used for the insertion.

[0002]

2. Description of the Related Art The terminal structure of a covered electric wire attached to a waterproof connector is generally as follows. As shown in FIG. 3 (A), at the end of the covered electric wire 1, the cover 2 is peeled off to expose the core wire 3, and the waterproof rubber plug 5 is fitted to the remaining end of the cover 2. When the terminal metal fitting 7 is attached to this terminal, the small-diameter mounting portion 6 formed on the tip side of the waterproof rubber stopper 5 is fitted between the pair of insulation barrels 8 of the terminal metal stopper 7, and together with this, the rubber stopper. By fitting the core wire 3 protruding from the tip of the wire 5 between the pair of wire barrels 9 and caulking the respective barrels 8 and 9, a waterproof rubber plug is attached to the end of the covered electric wire 1 as shown in FIG. 5
In both cases, the terminal fitting 7 is fixed.

[0003]

Conventionally, in the work of inserting the end of the covered electric wire 1 into the waterproof rubber plug 5, first, the covering 2 of the end of each covered electric wire 1 is peeled off to expose the core wire 3. Then, the waterproof rubber plugs 5 were taken out one by one from the accommodating bag, and the ends of the stripped covered electric wires 1 were inserted into the electric wire insertion holes of the waterproof rubber plug 5 one by one.

That is, in the conventional insertion method, there are many hand-operated parts and work efficiency is poor, and since the waterproof rubber plug 5 is made of oil-containing rubber and is often held by the hand, the hand is soiled. It had the drawback of being easy. Further, the length of the tip of the core wire 3 protruding from the waterproof rubber plug 5 when the covered electric wire 1 is inserted (marked by "a" in FIG. 3 (A)) is likely to vary, and the amount of protrusion does not remain normal. If the terminal fitting 7 is crimped, there is a possibility that the core wire 3 cannot be accurately crimped by the wire barrel 9 and the holding force is poor, or the conduction between the core wire 3 and the terminal fitting 7 is uncertain.

The present invention has been completed based on the above circumstances, and an object thereof is to enable the work of inserting the end of the covered electric wire into the waterproof rubber plug efficiently and accurately. is there.

[0006]

As a means for achieving the above object, the invention of claim 1 is a method of inserting a terminal of a covered electric wire into a wire insertion hole of a waterproof rubber stopper by projecting it by a predetermined dimension. After inserting and holding the waterproof rubber plug into the holding hole provided in the jig, push the end of the covered wire through the wire insertion hole of the waterproof rubber plug until the tip hits the specified regulation part. The feature is that the waterproof rubber plug is then removed from the holding hole.

According to a second aspect of the present invention, there is provided a jig used for inserting the end of the covered electric wire into the electric wire insertion hole of the waterproof rubber plug by protruding it by a predetermined dimension, and the waterproof rubber plug is provided on the upper surface of the jig body. A holding hole that can be inserted and held is formed, and the end of the inserted covered electric wire is allowed to project from the waterproof rubber plug on the bottom surface of the holding hole, and it is projected by abutting the protruding end. It is characterized in that the configuration is such that a concave hole having a regulation portion for regulating the amount to a constant value is provided.

According to a third aspect of the present invention, there is provided a jig used to insert the end of the covered electric wire into the electric wire insertion hole of the waterproof rubber stopper by projecting the end of the electric wire by a predetermined dimension. A plurality of holding holes capable of holding a waterproof rubber plug are formed on the bottom surface of, and the end of the inserted covered electric wire is allowed to project from the waterproof rubber plug on the bottom surface of each holding hole,
Further, the present invention is characterized in that a concave hole having a restriction portion for restricting the amount of projection to be constant by abutting the projecting end thereof is provided and a vibrating means for vibrating the jig body is provided. .

According to a fourth aspect of the present invention, in the third aspect of the invention, the jig body can be installed in an inclined posture, and a lower side wall of the jig body can be opened and closed. There is a feature in that.

[0010]

In the inventions of claims 1 and 2, after inserting the waterproof rubber plug into the holding hole of the jig, the end of the covered electric wire is pushed through the electric wire insertion hole of the waterproof rubber plug until it abuts against the regulating portion. . Then, when the waterproof rubber plug is removed from the holding hole, the terminal of the covered electric wire is inserted into the waterproof rubber plug, and the terminal of the covered electric wire is taken out from the end portion of the waterproof rubber plug by a certain size.

According to the third aspect of the present invention, when a plurality of waterproof rubber plugs are put into the jig body from a storage bag or the like and the jig body is vibrated by vibrating means, the waterproof rubber plug is formed on the bottom surface of the jig body. It is automatically inserted into each holding hole. The remaining waterproof rubber plug that does not enter the holding hole is collected and reused in the jig body for use.

According to the fourth aspect of the present invention, the waterproof rubber plug remaining without entering the holding hole is collected by rolling to the lower side because the jig body is inclined, and the side wall of that part is opened. Collected at once.

[0013]

According to the first aspect of the invention, since the covered electric wire is inserted into the electric wire insertion hole of the waterproof rubber plug held in the holding hole of the jig, the insertion work can be performed accurately and efficiently. In addition, the protruding length of the end of the covered electric wire can be made uniform. Also, since it is not necessary to hold the waterproof rubber plug by hand, it is possible to work while keeping the hands dirty as much as possible. According to the second aspect of the invention, the effect that the method invention having the above effect can be surely implemented can be obtained.

According to the third aspect of the present invention, since the work of inserting the waterproof rubber plug into the holding hole of the jig can be automatically carried out in plurals, the insertion work can be carried out more efficiently. To be According to the invention of claim 4, it is possible to efficiently collect the remaining waterproof rubber plug, and therefore, it is possible to obtain the effect that the insertion work can be performed more efficiently.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 2 and 3, the waterproof rubber plug 5 according to the present embodiment is made of oil-containing rubber as a material.
It is formed in a substantially tubular shape having an electric wire insertion hole 11, and on the rear end side (the right side in FIG. 3), two bulging portions 12 that are tightly fitted in a cavity of a connector (not shown) are arranged in the axial direction. In addition to being formed at intervals, the mounting portion 6 having a small diameter is formed on the tip side as described above. Further, a lip portion 13 that is in close contact with the outer circumference of the covered electric wire 1 is provided on the inner circumference of the wire insertion hole 11, and the rear end of the wire insertion hole 11 is gradually expanded toward the opening. A surface 14 is formed.

As is well known, the covered electric wire 1 is a core wire 3
The outer periphery of the insulating coating 2 is covered with the insulating coating 2, and the insulating coating 2 of the end is peeled by a certain size, and the core wire 3 is exposed and protruded from the end of the remaining insulating coating 2.

Subsequently, the jig 21 for inserting the electric wire is installed in FIGS.
It will be explained by. The jig 21 includes a box-shaped jig body 22 having an open top. This jig body 22
Has a thick bottom plate 23, and a plurality of holding holes 2 into which the waterproof rubber plug 5 is inserted and held on the upper surface of the bottom plate 23.
5 are aligned and formed. The holding hole 25 is provided above the small diameter portion 26 into which the mounting portion 6 of the waterproof rubber plug 5 can be inserted,
The bulging portion 12 is formed in a stepped shape having a large diameter portion 27 into which the bulging portion 12 can be inserted, and the depth of the large diameter hole 27 is such that the bulging portion 12 on the rear end side (the upper surface side in FIG. 2) is the bottom plate. The depth is set so as to project from the upper surface of 23.

At the center of the bottom surface of each holding hole 25, a through hole 29 having a diameter that allows the covered electric wire 1 to be inserted is formed in the bottom plate 23.
Is formed so as to open on the lower surface side. In addition, the jig body 2
On the lower surface side of the bottom plate 23 of No. 2, a regulation plate 31 provided with a peripheral wall 32 having a constant height is attached by applying the peripheral wall 32 to the peripheral edge of the bottom plate 23. They are assembled with a gap 34 provided therebetween. As will be described later in detail, the regulation plate 31 has
The end of the covered electric wire 1 inserted into the waterproof rubber plug 5 is the through hole 2
When it protrudes to the lower surface side of the bottom plate 23 through 9 and the end thereof is abutted, the protrusion is restricted.
The dimension from the bottom surface of the holding hole 25 to the top surface of the regulation plate 31 is set to be equal to the regular protruding length a of the covered electric wire 1 described with reference to FIG.

Further, one side wall 22a of the jig body 22 is swingably supported via a hinge 36, and the side wall 22a is raised and locked by a lock mechanism (not shown), as shown in FIG. As described above, the jig main body 22 in the form of a box having an open upper surface is formed, and the side wall 22a can be tilted and opened to the front side by unlocking the lock.

The work table 3 in which the jig 21 having the above structure is horizontal
Side wall 22 of the jig 21 that can be opened and closed
By putting the pad material 39 on the lower surface of the edge opposite to the side where a is provided, the edge side provided with the side wall 22a that can be opened and closed is attached in an inclined posture. Further, the workbench 38 is provided with a vibrating device (not shown) for vibrating the workbench 38, that is, the jig 21.

The jig 21 of this embodiment has the above-mentioned structure, and the method of using the jig 21 will be described below. First, a plurality of waterproof rubber plugs 5 are put into the jig body 22 from the accommodation bag 40. After that, when the vibrating device is operated to vibrate the jig 21, the waterproof rubber plug 5 is formed on the bottom plate 23 as shown in FIG. 2 while vibrating and moving on the bottom plate 23 of the jig body 22. Each one of the holding holes 25 is inserted in a fixed posture with the mounting portion 6 facing downward. The vibration device is stopped when the waterproof rubber plug 5 is inserted into each holding hole 25. Since the jig 21 is mounted on the workbench 38 in a tilted posture, the remaining waterproof rubber plug 5 without entering the holding hole 25 is rolled and collected on the lower side of the bottom plate 23. By opening the side wall 22a provided in the part, it is taken out and collected. The collected waterproof rubber stopper 5
Is again used in the jig body 22 for use.

When the waterproof rubber plugs 5 are inserted and held in the holding holes 25 of the jig 21 as described above, the waterproof rubber plugs 5 are directed toward the wire insertion holes 11 of the waterproof rubber plugs 5 as shown on the left side of FIG. The exposed end of the covered electric wire 1 of the core wire 3 is inserted. Since the taper-shaped guide surface 14 is provided on the insertion side of the electric wire insertion hole 11 of the waterproof rubber plug 5, the end of the covered electric wire 1 is smoothly inserted, and after passing through the electric wire insertion hole 11,
It projects through the through hole 29 of the jig body 22. Then, as shown on the right side of FIG.
When it hits the upper surface of 1, the pushing is stopped.

When the covered electric wires 1 have been inserted into the waterproof rubber plugs 5 as described above, the waterproof rubber plugs 5 are removed from the holding holes 25. Then, as shown in FIG. 3A, the protrusion length from the tip of the mounting portion 6 of the waterproof rubber plug 5 to the tip of the core wire 3 has a regular protrusion length a, and the terminal of the covered electric wire 1 is waterproofed. The rubber plug 5 is fitted.

When the terminal fitting 7 is fixed to the end of the covered electric wire 1, the mounting portion 6 of the waterproof rubber plug 5 is fitted between the pair of insulation barrels 8 of the terminal fitting 7 so that the core wire 3 has a prescribed protruding length. The core wire 3 is normally fitted between the pair of wire barrels 9 by protruding by the amount a. Therefore, as shown in FIG. 3 (B), when the waterproof rubber plug 5 and the terminal metal fitting 7 are fixed to the end of the covered electric wire 1 by caulking both barrels 8 and 9, especially the core wire 3 is normally inserted in the wire barrel 9. A strong holding force can be obtained by being fixed to, and the conduction between the core wire 3 and the terminal fitting 7 can be accurately obtained.

As described above, according to this embodiment, since the covered electric wire 1 may be sequentially inserted into the electric wire insertion hole 11 of the waterproof rubber plug 5 held in each holding hole 25 of the jig 21, the insertion operation is performed. Can be performed accurately and efficiently. Moreover, since the projecting length of the core wire 3 can be made equal to the prescribed projecting length a, the fixing work of the terminal fittings 7 can be properly performed on all the covered electric wires 1. Further, since the waterproof rubber plug 5 is touched only when it is pulled out from the holding hole 25 of the jig 21, it is possible to prevent the hand from getting dirty and work as much as possible.

Further, the jig 21 is vibrated so that the work of inserting the waterproof rubber plug 5 into the holding hole 25 can be automatically performed, and the waterproof rubber plug which is not completely filled in the holding hole 25 is left. 5 can also be collected at a time by opening the side wall 22a of the jig body 22, so that the insertion time and the collection time of the waterproof rubber plug 5 can be greatly shortened.
It is possible to perform insertion work extremely efficiently as a whole.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention.

(1) In the above embodiment, the vibration rubber device is used to automatically insert the waterproof rubber plug into the holding hole of the jig. However, even if the waterproof rubber plug is fitted by hand without using the vibration device, the covered electric wire is covered. Since the inserting operation itself can be performed efficiently, such a thing is also included in the present invention. (2) In addition, the waterproof rubber plug remaining in the jig body without completely entering the holding hole may be taken out and collected by hand.

[Brief description of drawings]

FIG. 1 is an external perspective view of a jig according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing an inserting operation of a covered electric wire.

FIG. 3 (A) is a side view of the waterproof rubber plug having the end of the covered electric wire inserted and the terminal fitting before caulking, and FIG. 3 (B) shows a state in which the waterproof rubber plug and the terminal fitting are fixed to the end of the covered electric wire. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Coated electric wire 2 ... Insulation coating 3 ... Core wire 5 ... Waterproof rubber plug 11 ... Electric wire insertion hole 21 ... Jig 22 ... Jig main body 22a ... (Openable / closable) side wall 23 ... Bottom plate 25 ... Holding hole 29 ... Through hole 31 ... Regulating plate 34 ... Gap 36 ... Hinge 39 ... Reliable material a ... Regular protrusion length

Claims (4)

[Claims] 1. A method of inserting a terminal of a covered electric wire into a wire insertion hole of a waterproof rubber plug by projecting the end of the covered electric wire by a predetermined dimension, and after holding the waterproof rubber plug in a holding hole provided in a jig. , The end of the covered electric wire is pierced through the electric wire insertion hole of the waterproof rubber plug and pushed until the tip hits a predetermined regulation part, and then the waterproof rubber plug is removed from the holding hole. Insertion method. 2. A jig used for inserting a terminal of a covered electric wire into a wire insertion hole of a waterproof rubber plug by projecting the end of the covered electric wire by a predetermined dimension, and holding the waterproof rubber plug on an upper surface of the jig body. Possible holding holes are formed, and the end of the inserted covered electric wire is allowed to protrude from the waterproof rubber plug on the bottom surface of the holding hole, and the protruding amount is regulated by abutting the protruding end. A jig for inserting an electric wire into a waterproof rubber stopper, characterized in that a recessed hole having a restriction portion is provided. 3. A jig used for inserting a terminal of a covered electric wire into a wire insertion hole of a waterproof rubber plug by protruding it by a predetermined dimension, wherein a bottom of a box-shaped jig main body having an open top surface comprises:
A plurality of holding holes that can hold the waterproof rubber plug are formed, and the bottom of each holding hole allows the end of the inserted covered electric wire to project from the waterproof rubber plug, and For inserting an electric wire into a waterproof rubber plug, which is provided with a recessed hole having a restricting portion for restricting the amount of protrusion by abutting, and equipped with a vibrating means for vibrating the jig body. jig. 4. The waterproof rubber plug according to claim 3, wherein the jig main body can be installed in an inclined posture, and a lower side wall of the jig main body can be opened and closed. A jig for inserting an electric wire into.