JPH02114184A - Testing method of continuity of coated wire and testing apparatus for continuity thereof - Google Patents

Abstract

PURPOSE:To make efficient an operation of making coated wires held in a parallel state in a holding material, by making detectors thrust into an insulator part of the coated wires and by bringing the detectors into contact with conductors of the coated wires by this thrusting. CONSTITUTION:When an air cylinder 37 is in a contracted state, a holding member 5 is fixed to a base board 32 by bolts 47 piercing through the member in the opposite ends, so that a synthetic resin plate 46 is made opposite to a line of detectors 27 of a detecting member 6 and that the fore end of each detector 27 is positioned above the center line in the longitudinal direction of each groove line. Each coated wire 7 is held in each roughly-set coil gap of a wire fixing member 11 constructed of coil springs 17. Thereafter, the opposite end parts 20 of the member 11 fitted with the wirings 7 are put in recessed parts 21 for putting-in provided in the front end part of a wire insertion element 10. When the wires 7 in a state of covering a groove line part of the member 10 are pressed from the front end of the groove line toward the rear end thereof by the peripheral surface part of a wire fixing member 12 shaped in a round rod, for instance, the wires 7 are engaged spontaneously in the groove lines. Subsequently, the opposite lateral side parts 23,23 of the member 12 are inserted in recessed parts 25 for engagement.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a reliable, easy and quick check for the presence of incorrect wiring and disconnection when manufacturing cables for electronic application equipment, etc. The present invention relates to a continuity testing method and continuity testing device for covered electric wires that enable this.

(Prior Art) When manufacturing a cable consisting of a large number of covered wires with connectors attached to both ends, electrically checking whether each coated wire is arranged in the correct order according to the specifications, Conventionally, a method has been used in which the tip of a detection needle is brought into contact with a substantially central portion of a conductor at the end of a covered wire.

To give a specific example, as shown in FIG. 9, after a holding member holds each end portion of a required number of covered wires a in a state in which they are closely arranged in parallel, The center portion b of the end face of each covered wire a in the parallel state
・Advance the detection needle member e, in which the detection needles d are arranged side by side so that the detection needle tip C and the detection needle tip C face each other, toward the center of the end surface of the corresponding coated wire, and The operation of the detector interposed between the detection needles was confirmed by contact with the probe, and the presence or absence of incorrect wiring was thereby electrically checked.

(Problems to be Solved by the Invention) Such a continuity test method and continuity test device are based on the premise that the conductor f is correctly located at the center of the covered wire 3, but the insulator in the covered wire a is Conductor f is exposed to j due to uneven thickness of i (thickness unevenness created during manufacturing of the covered wire).
The conductor f may not necessarily lie exactly in the center of the ifit line a, but the conductor f may be eccentric to the right, eccentric to the left, upward, downward, etc., as shown in FIG. 9, for example. , the reality is that it is eccentric in various directions.

As a result, the tip C of the detection needle d may not properly contact the center of the end face of the conductor f, and complete conduction may not be possible.
There was a problem #i that easily caused continuity test malfunctions. As the diameter of the covered wire becomes smaller, even a slight deviation in thickness has a greater effect on this problem, so malfunctions are more likely to occur.

Therefore, in conventional continuity testing, in order to prevent such malfunctions as much as possible, continuity testing requires extreme caution, resulting in poor work efficiency.

The object of the present invention is to provide a continuity testing method and a continuity testing device for covered electric wires that can solve these problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention employs the following means.

The continuity testing method for a covered wire according to the present invention is characterized by biting a detection object into an insulator portion of the covered wire, and bringing the detection object into contact with a conductor of the covered wire by the biting.

The B111 test device 1 according to the present invention, which is an ideal device for realizing the continuity test method described above, is constructed by combining a pair of detection devices 2.2 via a detector 3. The detection device 2 includes a holding member 5 that holds the covered electric wires 7 in a parallel state, and a needle-shaped detection body 27 whose tip portion 26 is tapered to each of the parallel covered electric wires. Detection members 6 arranged in parallel in a corresponding manner
The holding member 5 and the detection member 6 are relatively movable toward and away from each other in a state where the tip 26a of each detection body 27 faces a substantially central portion 42 of the insulator portion 41 of the corresponding covered wire, Due to the relative approach, the detection body 27 bites into the insulator portion 41 of the covered wire 7, and this biting allows the detection body 27 to come into contact with the conductor 43 of the covered wire. The corresponding detection bodies of the detection members 66 in the pair of detection devices 2.2 are electrically connected to each other with the detector 3 interposed therebetween.

The holding member 5 in the continuity test device 1 according to the present invention includes groove wires 9 for aligning the covered wires 7 in a fitted state.
Electric wire fixing members 11 and 12 are provided before and after the electric wire fitting member IO in which the groove wires 9 are arranged side by side, and one of the electric wire fixing members 11 is formed with a coil spring 17 extending in the direction in which the groove wires 9 are arranged side by side. The diameter of the wire forming the coil spring 17 is set to be approximately equal to the circumference of the groove wire partition section 22 formed between the adjacent a-wires 9, and each coil gap g...
A structure in which the covered electric wire 7 is elastically clamped can be suitably used.

(Example) Embodiments of the present invention will be described below based on the drawings.

1 and 2, a continuity test device 1 according to the present invention is a combination of a pair of detection devices 2.2 and a detector 3, both of which have the same configuration. It consists of a holding member 5 and a detection member 6 that can be moved toward and away from each other.

As shown in FIGS. 2 to 5, the holding member 5 holds a covered electric wire 7.
Wire fixing members 11 and 12 are installed at the front and rear of a rectangular plate-shaped wire fitting member IO having a plurality of groove wires 9 arranged side by side on its surface and having bolt holes bored at both ends. It is made of metal such as gun metal. In this embodiment, of the surface portion of the holding member 5, a portion facing a detection body 27, which will be described later, is recessed in a relatively shallow elongated manner, and the recessed portion 13 is provided with a conductive wire provided on the surface portion. It is formed by fitting and fixing a synthetic resin plate body 15 on which conducting wires are provided in a continuous manner. One electric wire fixing member 11 has a shaft body 16 inserted through a coil spring 17 and a coil spring 17
Both ends 19. ], 9 are fixed to portions near both ends of the shaft body 16, and both end portions 20 and 20 of the shaft body 16 are provided in front opening fitting recesses 21 provided on both sides of the front surface of the wire fitting member 10.
．． 21 in a detachable manner. In a state where the Flt wire fixing member 11 is attached to the electric wire fitting member IO, the coil spring 17 extends in the direction in which the groove wires 9 are arranged along the front edge of the electric wire fitting member IO.

Note that the diameter of the wire forming the coil spring 17 is set approximately equal to the width L of the conductor partition portion 22 (see FIG. 4) formed between the adjacent conductors 9 and 9, and as shown in FIG. Cover type for each coil gap g...! 517 is elastically held. The other wire fixing member 12 is formed, for example, in the shape of a round bar, and its both end portions 23 and 23 are fitted into a U-shaped front opening formed at both end portions on the rear side of the wire fitting member IO. Recess 25.2
5 and can be removably fitted into the holder.

As shown in FIGS. 6 and 7, the detection member 6 is a needle-shaped detection body 2 whose tip end portion 26 is tapered to correspond to each of the covered wires 7 held in parallel in the holding member 5.
7 are arranged side by side on a rectangular parallelepiped-shaped support member 29, and are attached to a lifting device 30 shown in FIG. 2 to perform the required vertical movement. At the same time, the support columns 31.31 are inserted into guide tubes 35.35 provided at both ends of the elevating member 33, and both branches 31.
The tip end portion 40 of the rod 39 of the air cylinder 37 is fixed to the center portion of the upper surface of the connecting plate 36 that connects the upper ends of the air cylinders 31 to 31.
is connected to the elevating member 33, and the elevating member 33 is configured to move up and down as the air cylinder 37 expands and contracts. The detection member 6 includes a tip 26 of each detection body 27.
a is a shape Li facing approximately the center portion 42 of the insulator portion 41 of the corresponding covered wire 7 held by the holding member 5;
(See FIG. 7) and is fixed to the front edge portion of the elevating member 33. Therefore, the detection member 6 is connected to the air cylinder 37.
can move up and down together with the elevating member 33 due to the vertical movement of the elevating member 33 as the elevating member 33 expands and contracts, and at its lowest position, the tip portion 26 of each detecting body 27 is connected to the covered wire 7.
The insulator portion 41 of . For this purpose, it is necessary to set the lowermost position of the lifting member 33 to an appropriate value according to the thickness of the covered wire 7. is the second
As shown in the figure, a stopper member 44 is used as a screw shaft, and the screwing amount can be adjusted depending on the thickness of the covered wire.

The pair of detection devices 2゜2 having the above-mentioned configuration are installed at a certain distance apart, as shown in FIG. The bodies are electrically connected to each other by conductive &'X45, for example, with the digital detector 3 interposed.

An example of a request for checking the presence or absence of incorrect wiring in the required number of coated wires each having a connector attached to both ends using the continuity test device 1 having such a configuration will be described below.

First, as shown in FIG. 2, in a state in which the air cylinder 37 is contracted, that is, in a state in which the detection bodies 27 are raised, the synthetic resin plate portion 46 faces the detection bodies 27...row of the detection members 6, and the detection bodies 27. The holding member 5 is fixed to the base plate 32 using bolts 47 inserted through bolt holes at both ends of the holding member 5 so that the tips 26a of the holding members 5 are located above the longitudinal center line of each groove line 9.

On the other hand, for each detection device 2.2, each coated wire 7... is connected to each coil gap g... in a roughly set range of the wire fixing member 11 made of the coil spring 17 based on the specifications. Sandwich. In this state, each covered wire 7 is held in a stable state by the spring action of the coil spring 17. Thereafter, both ends 20 of the wire fixing member 11 to which the covered wire 7 is attached.
20 is fitted into the fitting recesses 21, 21 provided at both front end portions of the electric wire fitting member 10. In this state, since the diameter of the wire forming the coil spring 17 is set approximately equal to the width of the conductor partition part 22, when the wire fixing member 11 made of the coil spring 17 is attached to the wire fitting member 10, each coated wire 7 naturally correspond to the groove line 9. Therefore, each covered electric wire 7 in a state of covering the groove wire portion of the electric wire fitting member 10 is moved from the front end of the groove wire 9 to the rear end by the circumferential surface portion of the wire fixing member 12 having a round bar shape, for example. (arrow F in Figure 3)
(in the direction shown by) When each covered electric wire 7... is pressed, each covered electric wire 4517... will automatically be fitted into each groove wire 9.... After that, when both end portions 23.23 of the wire fixing member 12 are fitted into the fitting recesses 25, 25 provided at both rear end portions of the wire fitting member 10, the wire fixing members 11.12 of both types are fitted. Due to the fixing action, each covered wire 7
... are stably held by the holding member 5 in a parallel state. In this way, after the covered electric wires 7 are held in parallel by the respective holding members 5.5 in the rain detection devices 2.2, the air cylinders 3 in the rain detection devices 2.
7.37 is extended to lower the detection member 6, and the tip portion 26 of each detection body 27... bites into the insulator portion 41 of the corresponding covered wire 7. Then, the detection object 27
Since the distal end portion 26 of the coated electric wire 7 is formed to be tapered (in other words, the distal end portion 26 is formed to become thicker toward the base end), the coated electric wire 7
The central axis of the conductor 43 is affected by the uneven thickness of the insulator 51.
l Even if the center axis of the wire does not coincide with the center axis of the wire (for example, in the case of the coated wire on the right side shown in FIG. 7), the tip portion 26 bites to the required depth, as shown in FIG. 27 will surely come into electrical contact with the conductor 43. As a result, if there is an incorrect wiring, the detector 3 will digitally display it, so the operator can correct the incorrect wiring based on the display of the detector 3. After the arrangement of the covered yI electric wires is determined to be correct in this way,
A synthetic resin connecting tape is applied and heat-sealed to the metal surface of the holding member so as to cover all the covered wires, thereby fixing the arrangement of the covered wires. Thereafter, the portion damaged by the biting of the detecting body is cut out, and each of the covered i-wires fixed in parallel is connected to the connecting portion of the connector by a well-known method.

In addition, in this embodiment, among the surface parts of the holding member 5,
Since the portion facing the detection body 27 is made of the synthetic resin plate portion 46, even if the tip of the detection body 27 penetrates the covered electric wire 7, damage to the tip portion of the detection body can be prevented.

The continuity test method and ring 1111 test device according to the present invention are as follows:
It is sufficient that the detecting object has a basic structure that bites into the insulator part of the covered wire, and therefore, the detecting object is
As described in the above embodiments, it is not limited to a needle-like shape, but may be formed with various types of bite portions capable of biting into the insulator portion.

Further, the holding member only needs to be able to hold the covered wires in a state in which they are arranged in parallel, and it is not necessarily necessary to include a wire fitting portion made of avA, and this can be done by employing well-known means.

(Effects of the Invention) The continuity testing method and continuity testing device according to the present invention have a basic configuration in which a detection object bites into an insulator portion of a covered electric wire, and this biting causes the detection object to come into contact with a conductor of the covered electric wire. Therefore, compared to the conventional case where the detection object is brought into contact with the conductor at the end face of the covered wire,
Even if the conductor is eccentric in any direction due to uneven thickness of the insulator of the covered wire, it will not be affected in any way.
The detection object can be brought into contact with the conductor reliably, and there is no inconvenience such as the need for caution in continuity test work.

The holding member has a structure in which a wire fixing member is provided before and after a wire fitting member whose surface part has conductive wires arranged in parallel for fitting the wire to be inserted, and one of the wire fixing members is formed with a coil spring and the wire fixing member is formed with a coil spring. By setting the diameter of the wire forming the coil spring to be approximately equal to the width of the A-line partition formed between adjacent conductors in the wire fitting section, the covered wire can be sandwiched between the coils at the required coil gap. ! The covered wire is held elastically and stably by the spring action of the coil spring.

Moreover, the covered wires held between the coils of the coil spring are arranged in parallel at intervals equal to the pinched conductors in the wire fitting member, so when the wire fixing member made of the coil spring is attached to the wire fitting member. , each covered wire naturally corresponds to each conducting wire, and is fitted into the conducting wire without difficulty. As a result of this, the work of holding the covered wires in parallel on the holding member can be greatly streamlined.

As is clear from the above description, when manufacturing a cable for electronic application equipment, etc., even if there are a large number of covered wires constituting the cable, the present invention can detect the presence or absence of incorrect wiring or disconnection. The work of checking the presence or absence of a wire can be performed reliably, easily and quickly, and it is also possible to reduce the cost associated with continuity testing.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram illustrating the outline of the device according to the present invention, Fig. 2 is a perspective view showing the detection device in its use state, Fig. 3 is a partially enlarged perspective view showing the holding member, and Fig. 4 is an electric wire FIG. 5 is an enlarged perspective view of a part of the fitting member; FIG. 5 is a perspective view of a part of the wire fixing member in a state where the covered wire is elastically held between the coil gaps; FIG. 6 is the detection member. A perspective view, FIGS. 7 and 8 are explanatory diagrams explaining the continuity test method, and FIG. 9 is a conventional conduction test method. It is a perspective view explaining a test method. l... Continuity test device, 2... Detection device, 3... Detector, 5... Holding member, 6... Detection member, 7...
Covered electric wire, 9...Groove wire, lO...Electric wire fitting member, 1
1.12...Electric wire fixing member, 17...Coil spring,
27... Detection object, 41... Insulator portion, 42...
Approximately central part of the insulator part of the covered electric wire, 43... conductor,
51...Insulator.

Claims (3)

[Claims] (1) When conducting a continuity test of a covered wire, a test object is bitten into the insulator portion of the covered wire, and the bite causes the detection object to come into contact with the conductor of the covered wire. Method. (2) The holding member 5 that holds the covered wires 7 in a parallel state and the needle-shaped detection body 27 whose tip portion 26 is tapered correspond to each of the parallel covered wires. The holding member 5 and the detecting member 6 are opposed to each other with the tip 26a of each detecting member 27 facing approximately the center portion 42 of the insulator portion 41 of the corresponding covered wire. Due to their relative approach, the detection object 27 bites into the insulator portion 41 of the covered wire 7, and the detection object 27 bites into the insulator portion 41 of the covered wire 7.
a pair of detection devices 2 configured to be in contact with a conductor 43 of: a detection member 6 in the pair of detection devices 2;
, 6 are electrically connected to each other with a detector 3 interposed therebetween. (3) The holding member 5 has a groove wire 9 into which the covered electric wire 7 is fitted.
wire fixing members 11 and 12 are provided at the front and rear of the wire fitting member 10 which is arranged in parallel on the surface part, and one of the wire fixing members 11 is connected to a coil spring 17 extending in the direction in which the groove wires 9 are arranged side by side.
The diameter of the wire material forming the coil spring 17 is set to be approximately equal to the width L of the groove wire partitioning portion 22 formed between the adjacent groove wires 9, and the covered wire is arranged so that the coil gap g. . . . A continuity test device for a covered electric wire according to claim 2, wherein the conductivity test device is configured to be elastically held between the wires.