JPH05174891A - Cable provided with end part reinforcing means - Google Patents

Abstract

PURPOSE:To prevent a disconnection of wire at the connection of a terminal and a flat cable, by preventing a bending at the connection between a round pressure-welded terminal and a flat cable by using a reinforcing means fixable simply without requiring a special tool, in a terminal connection of a flat cable. CONSTITUTION:A reinforcing plate 1 is provided over a round terminal 2 pressure-welded to the end of a flat cable 5. One end of the reinforcing plate 1 is inserted between the lead wire part and the covered wire part of the flat cable, while the other end is formed to be fixed at a specific position together with the pressure-welded terminal. And the connection of the round terminal 2 and the flat cable 5 is protected by a thermal contractive tube 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable having a reinforcing means at a connection end thereof with a device, and particularly when connecting a flat type cable to a round type crimp terminal, a cable between the crimp terminal and the cable is provided. It relates to a cable provided with a reinforcing means.

[0002]

2. Description of the Related Art Conventional flat cables have a relative movement of 2
It has been used to electrically connect two objects, for example the table and head of the wire electric discharge machine shown in FIG. 4 as a typical example. That is, referring to FIG. 4, the wire electric discharge machine is mounted on the table 12 and the wire 17 that is tensioned between the upper head 16 and the lower head 15 via the plurality of guide rollers 19 from the bobbin 18. At the same time as applying a voltage between the placed work 11 and the work 12, the table 12 is moved along a predetermined path according to the machining shape of the work, and the electric discharge phenomenon between them is used to machine the work 11 into a predetermined shape. It is a machine. Therefore, the table 12 has the wires 17 and
The heads 15 and 16 are adapted to perform relative movement. A predetermined voltage is applied to the table 12 by a cable 13 from a terminal 14 provided on the lower head 15. Thus the lower head 1
Since the table 5 and the table 12 move relative to each other, a flat cable which is excellent in flexibility is usually used as the cable 13 which moves accordingly. The flat cable 13 is connected to the terminal 14 by crimping a round terminal to the connection end of the flat cable 13 from the manufacturing cost and easiness of handling, and connecting the terminal 14 with the screw means. It was supposed to be fastened.

[0003]

However, in order to crimp a round type terminal to a flat type cable, conductors spread in a flat plate shape are bundled in a round shape, and the bundled conductor portion is bonded to the crimped portion of the round type terminal. It must be inserted, that is, only the conductor portion must be crimped, not including the cable jacket. For this reason, when the above-mentioned table or the like to which the cable is connected moves, the cable bends at the joint between the conductor and the terminal, so that the cable is easily broken at this joint. On the other hand, in general, when crimping a round cable to a round terminal, not only the conductor portion but also the covering portion is crimped, so the cable does not bend at the joint with the terminal, The disconnection described above does not occur.
Therefore, such disconnection can be solved by crimping from the covering portion of the cable in the same way as crimping a round cable to a round terminal with a terminal dedicated to a flat cable, but crimp terminals for flat cables are generally Since it is not on the market, special manufacturing causes high cost and disadvantages such as the need for special tools. Therefore, an object of the present invention is to provide, at the end of a flat cable, a reinforcing means that can be easily manufactured at low cost and that does not require a special tool, and bend at the joint between the round crimp terminal and the cable. SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable capable of preventing the above-mentioned problems and thus preventing the above-mentioned disconnection, and solving the above-mentioned problems.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a flat type having a reinforcing means for mechanically reinforcing a cable end to be inserted into and crimped into a round type crimp terminal. In the cable, the reinforcing means of the cable end portion is fixed to the end portion of the cable, and a reinforcing plate which is fixed to a predetermined position together with the crimp terminal by a fixing means such as a screw,
Provided is a cable having an end reinforcing means, comprising a protective tube covering a connecting portion between the cable and the crimp terminal, and preventing bending at a connecting portion of the cable with the crimp terminal. It

[0005]

The reinforcing plate is attached by a simple operation in which one end is inserted between the conductor of the cable and the sheath or wound around the sheath, and the other end is fixed to a predetermined position together with the crimp terminal. , Functions to prevent bending of the connection between the crimp terminal and the cable. The present invention will be described in more detail based on the embodiments described below with reference to the accompanying drawings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring first to FIG. 1, a flat cable 5 according to the present invention has a round crimp terminal 2 crimped to an exposed conductor wire portion 4 after removing a coating on an end portion thereof. The reinforcing plate 1 is inserted between the conductor of the cable 5 and the coating so as to reinforce the connection portion with the round crimp terminal 2. The connection portion between the cable 5 and the crimp terminal 2 is covered and protected by a heat shrinkable tube 3 which is generally commercially available.

Here, as shown in FIG. 2, the reinforcing plate 1
In the most preferred embodiment, is a spring plate material having a plate thickness of about 0.5 mm, and has a substantially square main body portion 6 having a circular opening 7 through which the screw means penetrates in the central portion, and a strip shape from the main body portion 6. The extended tongue portion 8 is provided, and the tongue portion 8 is
It is designed to be inserted between the conducting wire portion and the covering portion of the flat cable 5. The body portion 6 of the reinforcing plate 1 has a substantially square shape as the most preferable embodiment, but may have a circular shape or another polygonal shape as long as it can be firmly fixed to the terminal 2. As for its size, as long as the reinforcing plate and the terminal 2 are firmly fixed, the terminal 2
It is appropriately determined according to the size of. As can be understood from FIG. 1, the openings of the terminal 2 and the reinforcing plate 1 are arranged so that their axis lines coincide with each other, and the screw means penetrates them to be fixed at a predetermined position. There must be. In such an arrangement, the length of the tongue 8 is determined such that it is inserted into the jacket of the cable 5, preferably 20 mm to 30 mm. Further, the width of the tongue portion 8 is the same as that of the inserted cable 5
It goes without saying that the width is determined appropriately so that there is no looseness.

In the embodiment shown in FIG. 1, the tongue portion 8 of the reinforcing plate
Was inserted between the conductor portion and the covering portion of the flat cable 5 to prevent bending at the joint between the cable 5 and the terminal 2, but the tongue portion 8 was inserted into the covering portion of the cable 5. Even if it does not exist, the same effect can be produced as long as the connection portion of the cable 5 is fixed. FIG. 3 shows a modification of the embodiment shown in FIG. 2, in which the elements corresponding to FIG. 2 are indicated with the same reference numbers. That is, the reinforcing plate shown in FIG. 3 has a strip-shaped member 9 at a tip portion of the tongue portion 8 of the reinforcing plate shown in FIG. 2 in a direction intersecting at a right angle with the longitudinal direction of the tongue portion 8.
2 in that the reinforcing plate is provided. That is, in the reinforcing plate shown in FIG. 2, the tongue portion 8 is inserted into the covering portion of the cable 5 to fix the cable 5 and the terminal 2, but in the embodiment of FIG. 3, the strip-shaped member is used. Wrap 9 around the outer circumference of the covered part of the cable 5,
The terminal 2 and the cable 5 are fixed. Therefore, similar to the reinforcing plate of FIG. 2 described above, the openings of the terminals 2 and the reinforcing plate 1 have their axes aligned with each other, and the screw means penetrates them so that they are fixed at predetermined positions. In such an arrangement, the length of the tongue 8 is determined so that the strip 9 can be wrapped around the outer circumference of the covered portion of the cable 5. Further, the length and width dimensions of the belt-shaped member 9 are selected such that the covered portion of the cable can be firmly wound and fixed. Furthermore, since the strip-shaped member 9 is wound around the cable 5, the strip-shaped member 9 is V-shaped or the like across the strip-shaped member 9 in the vertical direction at the position of the dotted line 10 so as to fit the width of the cable to be fixed. It may be provided with a groove in the shape of to facilitate bending.

[0009]

As described above, the reinforcing plate is inserted into the covering portion of the cable or the strip-shaped member is wound around the covering portion,
By the simple operation of fixing the cable and the reinforcing plate and fixing them together with the crimping terminal at a predetermined position with screw means, there is an effect that the conductor wire is not bent at the connecting portion between the cable and the crimping terminal. Then, it is possible to prevent disconnection in this portion without using a special terminal or a special tool, and it is possible to improve the reliability of equipment and devices that use such a cable.

[Brief description of drawings]

FIG. 1 is a schematic view of a cable end according to the present invention. (A) It is a front view of a cable end part. (B) It is a side view of a cable end part.

FIG. 2 is an enlarged view of a reinforcing plate.

FIG. 3 is an enlarged view of a reinforcing plate according to a second embodiment.

FIG. 4 is a schematic perspective view of a wire electric discharge machine using the cable according to the present invention as a wiring means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Reinforcement plate 2 ... Round crimp terminal 3 ... Heat-shrinkable tube 4 ... Conductor part 5 ... Cable 6 ... Main body part 7 ... Opening part 8 ... Tongue part 9 ... Band member 10 ... Groove part

Claims (3)

[Claims] 1. A flat type cable (5) having reinforcing means for mechanically reinforcing the end portion of a cable to be inserted and crimped into a round type crimp terminal (2), the end portion of the cable (5) The reinforcing means is fixed to the end portion of the cable (5) and is fixed together with the crimp terminal (2) at a predetermined position by a fixing means such as a screw, and the cable (5). And a protective tube (3) covering the connecting portion between the crimp terminal (2) and the cable (5) to prevent bending at the connecting portion with the crimp terminal (2). A cable having a means for reinforcing the section. 2. The reinforcing plate (1) comprises a body portion (6) having an opening (7) and a strip-shaped tongue (8), and the crimp terminal (2) is fixed at a predetermined position. A fastening means for fastening the reinforcing plate (1) at a predetermined position through the opening (7) and the tongue (8) between the conductor of the cable (5) and the coating. The end according to claim 1, which is inserted into a cable and fixed and reinforces the cable (5) and the crimp terminal (2) so as not to bend at a joint between the cable (5) and the crimp terminal (2). A cable having a means for reinforcing the section. 3. The reinforcing plate (1) comprises a body portion (6) having an opening (7), a strip-shaped tongue (8), and a strip-shaped tongue joined to the tip of the tongue (8). A member (9), wherein each axis of the belt-shaped member (9) and the belt-shaped tongue (8) is
Fastening means, which are arranged so as to cross each other perpendicularly, and which fasten the crimp terminal (2) at a predetermined position, fastens the reinforcing plate (1) at a predetermined position through the opening (7). And the strip-shaped member (9) is formed so as to be wound around the covering portion of the cable (5), and is not bent at the joint between the cable (5) and the crimp terminal (2). The cable having the end reinforcing means according to claim 1, which fixes and reinforces the cable (5) and the crimp terminal (2).