JP3448707B2 - Inspection jig for finished coaxial cable - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly applied to a terminal-finished coaxial cable that is used as an intermediate product for crimping contacts after wire-end processing or wire connection by soldering. The present invention relates to an inspection jig for a coaxial cable that has been processed to detect a core wire.

[0002]

2. Description of the Related Art Conventionally, when processing a coaxial cable of this type to assemble it as a connector, for example, the process steps of a flow chart shown in FIG. 5 are followed.
That is, first, a uniaxially extending coaxial cable, which is formed by arranging a shield wire on the entire circumference of an inner jacket portion coated with a core wire so as to be covered with an outer jacket portion, called a sheath, is cut into a suitable length. After (Step S1) is performed, the inner sheath portion and the outer sheath portion of the coaxial cable are cut off by the cable end processing (Step S2), so that the exposed portion of the shield wire and the exposed portion of the core wire around the inner sheath portion are separated. A terminal-processed coaxial cable is obtained as an intermediate product, which is formed so that the length of the exposed portion in the uniaxial direction of the inner jacket portion defined by the distance is a predetermined interval.

Next, as a result of inspecting the end-processed state of the coaxial cable that has been end-processed by the intermediate product inspection (step S3), if it is a defective product, it is corrected (step S4) and the intermediate product inspection is performed again (step S3). Try to do it,
If it is a non-defective product, the contact is subsequently crimped to the core wire and the inner jacket portion, and the outer cap portion is covered with a shield cap to perform contact crimping to cover the exposed portion of the shielded wire with the shield cap (step S5). The contact is completed by fitting the insulator to the shield cap and assembling the contact and the shield cap with the insulator (step S6).

FIG. 6 is a side view showing an embodiment of the coaxial cable 10 having a processed terminal, which has become a defective product after the above-described cable terminal processing (step S2). Here, as a result of the cable end processing (step S2), the inner sheath 2 and the outer sheath 4 of the coaxial cable are cut off, and the distance between the exposed portion of the shield wire 3 and the exposed portion of the core wire 1 around the inner sheath 2 is cut. In addition to the length of the exposed portion of the inner sheath portion 2 defined by the above, the defective shielded wire (commonly known as beard) which is a defective portion of the shielded wire 3 around the exposed portion of the inner sheath portion 2 is defined. End) Coaxial cable 1 with terminal processed in the form that 3a extends
It shows that 0 is formed.

FIG. 7 is a side view showing another embodiment of the coaxial cable 10 having a terminal processed, which is also a defective product after the above-described cable terminal processing (step S2). Here, similarly, as a result of the cable end processing (step S2),
The inner jacket portion 2 and the outer jacket portion 4 of the coaxial cable are cut off, and the length of the exposed portion of the inner jacket portion 2 defined by the distance between the exposed portion of the shield wire 3 and the exposed portion of the core wire 1 around the inner jacket portion 2. In addition to the predetermined intervals, the terminal processed coaxial cable 10 has a form in which a defective core wire (commonly known as a beard wire) 1a, which is a defective machining portion of the core wire 1, extends around the exposed portion of the inner jacket portion 2. The figure shows that the image is formed.

As described above, the end-processed coaxial cable 10 having the defective shield wire 3a or the defective core wire 1a needs to be accurately detected by the intermediate product inspection (step S3). Normally, if the intermediate product inspection (step S3) and the correction (step S4) are carefully performed by hand, it is possible to eliminate defective products and assemble the connector with good yield. In many cases, the assembly process procedure is performed by a series of automated processes and mass production is performed. Therefore, in the intermediate product inspection (step S3), an inspection jig or an inspection apparatus to which the inspection jig is applied is used.

FIG. 8 is a partial cross-sectional top view of the basic construction of an inspection apparatus to which a conventional coaxial cable inspection jig for terminal processing is applied. In this inspection device, the inspection table 2
A pair of fixing bases 21a and 21b connected to each other by a spring 22 are provided in a substantially central portion on the 0. Holes into which the terminal-processed coaxial cable 10 can be inserted at predetermined positions of these fixing bases 21a and 21b. An inspection jig is provided in which a pair of electrode plates 15 and 16 provided with parts are fixed via a spacer so as to be opposed to each other with a predetermined interval. Further, the switches 24a and 2 provided on the inspection table 20 are provided outside the pair of fixed tables 21a and 21b, respectively.
Air cylinders 23a and 23b, which are respectively driven by pressing and turning on 4b, are provided so as to face each other. Further, the display device 25 is connected to the pair of electrode plates 15 and 16 via lead wires 11 and 12, respectively.

Of these, the hole provided in the electrode plate 15 has a diameter capable of inserting the inner jacket portion 2 of the coaxial cable 10 having the terminal processed, and the hole provided in the electrode plate 16 has the terminal processed. It has a diameter larger than the diameter of the hole of the electrode plate 15 so that the shielded wire 3 of the coaxial cable 10 can be inserted. The display device 25 inspects the intermediate product (step S3).
Indicator lamp 25 such as an LED indicating OK in
a and a display lamp 25b such as an LED for displaying NG, and a power supply unit for supplying power to the display lamps 25a and 25b and applying a detection voltage to the lead wires 11 and 12. There is.

In this inspection apparatus, when inspecting the processed coaxial cable 10, the processed coaxial cable 10 is inserted into the holes of the pair of electrode plates 15 and 16 and the switch 24a on the inspection table 20 is inserted. , 24b are arbitrarily pressed to turn on the air cylinder 23.
a and 23b are driven.

The air cylinders 23a, 23b are turned on by pressing one of the switches 24a, 24b to turn it on.
When either one of the two is driven, the fixing bases 21a and 21b provided with the inspection jig and coupled by the springs 22 receive the air pressure of the driven ones of the air cylinders 23a and 23b and the nearest one receives the air pressure. Move to the other side,
At this time, the hole edge wall of the electrode plate 15 and the hole edge wall of the electrode plate 16 contact the inner sheath 2 and the shielded wire 3 of the terminal-processed coaxial cable 10, respectively.

Further, when both the air cylinders 23a and 23b are driven by pressing both the switches 24a and 24b to turn them on, the fixing bases 21a and 21b connected by the springs 22 are provided with inspection jigs. , The air cylinders 23a, 23b receive air pressure to move so as to approach each other, and at this time, the inner edge portion 2 and the shield wire 3 of the terminal-processed coaxial cable 10 are respectively connected to the hole edge of the electrode plate 15. The wall and the edge wall of the hole of the electrode plate 16 are in contact with each other.

In either case, the electrode plate 15 is provided on each of the inner sheath 2 and the shielded wire 3 of the coaxial cable 10 having the terminal processed.
Since the hole edge wall of No. 2 and the hole edge wall of the electrode plate 16 are in contact with each other, if there is a defective shielded wire 3a or a defective core wire 1a in the coaxial cable 10 that has been processed, the electrode plates 15 and 16 are electrically connected. Then, the display device 25 that has detected this state turns on the display lamp 25b indicating NG, but the defective shield line 3a
If there is no defective core wire 1a, there is no conduction between the electrode plates 15 and 16, and the display device 25 that has detected this state turns on the display lamp 25a indicating OK.

In this way, it is possible to inspect whether the processed coaxial cable 10 is a good product or a defective product.

[0014]

In the case of the above-described inspection device, the opposing electrode plates of the inspection jig have a function of contacting the inner sheath portion and the shield wire of the coaxial cable with the processed terminal when driven. It can be accurately detected when inspecting a defective shield wire which is a defective processed portion of the shield wire as shown in FIG. 6, but is defective when inspecting a defective core wire which is a defective processed portion of the core wire as shown in FIG. If the tip of the core wire is not in contact with the shield wire, there is a problem that the defect cannot be detected accurately.

FIG. 9 is a defective core wire 1a shown in FIG. 7, which cannot be accurately determined as a defective product by an inspection by a conventional inspection device.
It is the figure shown in order to demonstrate the problem at the time of assembling as a connector targeting the coaxial cable 10 with which the terminal processing was carried out, The figure (a) is the coaxial cable 10 with terminal processing which has the defective core wire 1a. FIG. 2B is a side view showing a simplified cross-sectional view of a partial cross-section of the intermediate product inspection, and FIG. 2B shows the state of contact crimping using the terminal-processed coaxial cable 10 having the defective core wire 1a. The side view and FIG. 6C are side views showing a state of contact assembly using the contact-crimped terminal-processed coaxial cable of FIG.

Referring to FIG. 9A, here, when the intermediate product inspection is performed on the end-processed coaxial cable 10 having the defective core wire 1a, the inner sheath portion 2 of the end-processed coaxial cable during driving is tested. Plate 1 for shield and shielded wire 3
When the intermediate portions of the defective core wire 1a come into contact with the electrode plate 15 at the time of contacting the electrodes 5 and 16, if the tip end thereof is released and is in a non-contact state with the shield wire 3, each electrode plate 15,
16 does not conduct, and in such a case, it is shown that a defect cannot be accurately detected. The end-processed coaxial cable 10 having such a defective core wire 1a is determined to be OK in the intermediate product inspection by the conventional inspection device, and is transferred to the subsequent contact crimping in the process procedure.

Therefore, referring to FIG. 9 (b), here, a terminal-processed coaxial cable 10 having a defective core wire 1a is provided.
When the contact crimping is performed with respect to, when the contact 8 is crimped to the core wire 1 and the inner jacket portion 2 and the shield portion 7 is covered on the outer sheath portion 4 to cover the exposed portion of the shielded wire 3 with the shield cap 7, It is shown that the tip end of the defective core wire 1a can come into contact with the shield cap 7 while being left free. The contact-crimped terminal-finished coaxial cable 10 having such a defective core wire 1a is transferred to the subsequent contact assembly in the process procedure.

Referring to FIG. 9C, here, when the connector assembly is carried out for the contact crimped terminal-finished coaxial cable 10 having the defective core wire 1a, the insulator 9 is fitted to the contact 8 and the shield cap 7. When the contacts 8 and the shield cap 7 are covered with the insulator 9 in combination, the tip end of the defective core wire 1a that has been released can move and come into contact with the shield cap 7. The connector in such a state becomes a short-circuited out (breakdown of the withstand voltage) and the basic function is remarkably deteriorated, so that it becomes a defective product as a finished product.

Therefore, the inspection device using the conventional inspection jig has a defect in inspection performance, and there is room for re-examination from the viewpoint of the basic structure and performance of the inspection jig.

The present invention has been made to solve such a problem, and its technical problem is to carry out a simple and accurate inspection accurately regardless of the state of a defective wire of a coaxial cable having a terminal processed. It is to provide an inspection jig for a coaxial cable that has been subjected to a terminal process that can be performed.

[0021]

According to the present invention, there is provided a uniaxially extending coaxial cable in which a shield wire is provided on the entire circumference of an inner jacket portion coated with a core wire so as to be covered with the outer jacket portion. The inner coating portion and the outer coating portion are cut off by terminal processing, and the length of the exposed portion in the uniaxial direction of the inner coating portion defined by the distance between the exposed portion of the shield wire and the exposed portion of the core wire is In an inspection jig for a coaxial cable with a terminal processed for inspecting the finished state of a coaxial cable with a terminal processed formed to have a predetermined interval, facing each other with an interval in the uniaxial direction smaller than the predetermined interval. An inspection jig for a terminal-processed coaxial cable including two sets of a pair of conductive plates that are arranged and that can detect the presence or absence of continuity by sandwiching the inner jacket portion on both sides in a direction perpendicular to the uniaxial direction. Got the ingredients That.

Further, according to the present invention, in the above-mentioned testing jig for a coaxial cable having a terminal processed, two sets of a pair of conductive plates have a first interval in which the interval in the uniaxial direction is smaller than a predetermined interval. And a pair of electrode plates that are arranged to face each other and that form a first set to which a detection voltage is applied,
On the inner walls of the pair of electrode plates that are arranged to face each other with a second spacing that is smaller than the first spacing in the uniaxial direction, and that are perpendicular to the uniaxial direction. The pair of electrode plates forming a second set, into which the outer wall is inserted and contacted, and the pair of electrode plates forming the first set and the pair of electrode plates forming the second set are respectively uniaxial A terminal-processed coaxial cable inspection jig having a cutout portion having a shape capable of sandwiching the inner coating portion on both sides in a direction perpendicular to the above is obtained.

Further, according to the present invention, in the above-described testing jig for a coaxial cable having a terminal processed, the notch portion is formed in a semicircular shape so that a portion to be in contact with the inner jacket portion conforms to the shape of the inner jacket portion. An end-processed coaxial cable inspection jig can be obtained.

In addition, according to the present invention, there is provided an inspection device using any one of the above-mentioned inspection jigs for a coaxial cable, which has been subjected to terminal processing, wherein at least a pair of electrode plates forming a first set,
An air cylinder in which one end side of a pair of electrode plates forming a second set on which a sensor plate is provided is attached to move a pair of electrode plates forming the second set by air pressure in a direction perpendicular to the uniaxial direction, and The movement of the pair of electrode plates forming the second set when the air cylinder is driven can be detected by the approach of the sensor plates, and the first set is attached to the inner sheath portion of the coaxial cable having the terminal processed. Positioning sensors that detect a contact state of the pair of electrode plates forming the second set and the pair of electrode plates forming the second set and output a detection signal are provided at predetermined positions, respectively, and the first set The pair of electrode plates forming the second set is positioned relative to the pair of electrode plates forming the second cylinder in a direction perpendicular to the uniaxial direction by driving the air cylinder, and the air cylinder is driven and operated. Drive operation unit for
The detection voltage is applied to the pair of electrode plates forming the first set, and the result of detecting the presence / absence of conduction in the first interval range and the second interval range in accordance with the detection signal is subjected to terminal processing. An inspection device including an inspection result notifying device that notifies the coaxial cable as a result of inspecting the quality of the coaxial cable can be obtained.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The following is a detailed description of the terminal processed coaxial cable inspection jig of the present invention with reference to the drawings.

First, the outline of the structure of the inspection jig for a coaxial cable with a terminal processed according to the present invention will be briefly described. This terminal-processed coaxial cable inspection jig is also a uniaxial direction in which, like the conventional inspection jig, the shield wire is placed around the entire inner circumference of the core wire covering the core wire. By cutting the inner and outer jacket parts of the coaxial cable that has been extended to the end, the length of the exposed part in one axis direction of the inner jacket part, which is defined by the distance between the exposed part of the shield wire and the exposed part of the core wire, It is for inspecting the finish condition of the terminal processed coaxial cable formed so as to have a predetermined interval, but here, the interval in the uniaxial direction is arranged to face each other at an interval smaller than the predetermined interval, It comprises two sets of a pair of conductive plates capable of detecting the presence / absence of conduction by sandwiching the inner cover portion on both sides in a direction perpendicular to the uniaxial direction.

The quality of an intermediate product intended for a coaxial cable having a terminal processed by configuring an inspection device so that at least one of the two sets of a pair of conductive plates is used as an electrode plate to apply a detection voltage. If the inspection is performed, the inspection can be performed in a state where the inner coated portion of the processed coaxial cable is sandwiched between the both sides of the pair of conductive plates, and thus the defective shielded wire 3a as shown in FIG. 6 is provided. Even if the defective core wire 1a as shown in FIG. 7 is provided and its tip end is disconnected from the shield wire 3 in a non-contact state, the conductive plates are electrically connected to each other. As a result, it is possible to accurately and accurately detect defects.

FIG. 1 is an external perspective view showing the essential structure of a terminal processed coaxial cable inspection jig according to an embodiment of the present invention. In this inspection jig, as the two pairs of the above-mentioned pair of conductive plates, the first interval is smaller than the predetermined interval (the length of the exposed portion in the uniaxial direction of the inner sheath 2). And a pair of electrode plates 5a, 6a forming a first set to which a detection voltage is applied and having a uniaxial spacing smaller than the first spacing. A second set which is arranged to face each other with a distance of 2 and in which the outer wall is inserted into contact with the inner walls of the pair of electrode plates 5a, 6a forming a first set in a direction perpendicular to the uniaxial direction. And a pair of electrode plates 5b and 6b that form the first set and a pair of electrode plates 5b and 6b that form the second set.
Have notches each having a shape capable of sandwiching the inner jacket 2 on both sides in a direction perpendicular to the uniaxial direction. These notches have a semi-circular shape in which the portion that comes into contact with the inner cover 2 matches the shape of the inner cover 2.

A detection voltage is applied to the electrode plates 5a and 6a, and the electrode plates 5b and 6b are moved so that the outer walls of the electrode plates 5b and 6b enter the inner walls of the electrode plates 5a and 6a and come into contact therewith. Configuration (that is, in principle of operation, it can be regarded as the same as a mode in which the electrode plates 5a, 6a and the electrode plates 5b, 6b move in a direction in which they are relatively close to each other, as shown by the arrow in FIG. If the terminal processed coaxial cable 10 is inspected as an intermediate product with
The inner wall of a and the outer walls of the electrode plates 5b and 6b contact each other,
In addition, the notched portions of the electrode plates 5a, 6a and the electrode plates 5b, 6b guide the inner casing 2 of the coaxial cable 10 having been processed, and the semicircular portion of the notched portion holds the inner casing 2 in contact therewith. Since the inspection is performed in the state (that is, in the form in which the plate thicknesses of the electrode plates of both poles are increased), the inspection can be performed simply and accurately with high accuracy regardless of the state of the defective wire of the coaxial cable 10 with the processed terminal. be able to.

FIG. 2 is a side view showing a state of inspecting an intermediate product with respect to the coaxial cable 10 on which the terminal has been processed, when the inspecting apparatus shown in FIG. 1 is simply configured. (A) is a good quality coaxial cable 1
0 at the time of inspection, the same figure (b) is a defective terminal-finished coaxial cable 1 having a defective core wire 1a
This relates to the time of inspection targeting 0.

FIG. 2 (a) shows that if the processed coaxial cable 10 is a non-defective product having no defective wire, the electrode plates 5a and 6a and the electrode plates 5b and 6b are not electrically connected to each other during the inspection of the intermediate product, and It shows that the lamps connected to the plates 5a and 6a do not light up.

On the other hand, in FIG. 2B, since the terminal-processed coaxial cable 10 is a defective product having the defective core wire 1a, the electrode plates 5a and 6a and the electrode plates 5b and 6b are inspected during the intermediate product inspection. Shows that the lamps connected to the electrode plates 5a and 6a are turned on.

FIG. 3 is a top view showing the basic structure of an inspection apparatus constructed by using the inspection jig shown in FIG. or,
FIG. 4 is an external perspective view showing an extracted essential part of the inspection apparatus shown in FIG.

Here, an example is shown in which the inspection device is constructed by using the inspection jig having the above-mentioned configuration. This inspection apparatus includes a pair of electrode plates 5a and 6a forming a first set, and a pair of electrode plates 5 forming a second set in which a sensor plate 18 is arranged.
An air cylinder 33 in which one end side of b, 6b is attached and the electrode plates 5b, 6b are moved by air pressure in a direction perpendicular to the uniaxial direction.
And the electrode plate 5b when the air cylinder 33 is driven,
The movement of 6b can be detected by the approach of the sensor plate 18, and then the detection signal is detected by detecting the state in which the electrode plates 5a, 6a and the electrode plates 5b, 6b are in contact with the inner sheath portion 2 of the coaxial cable 10 that has been processed. The output positioning sensor 17 is provided at each predetermined position, and the electrode plates 5b and 6b can be moved relative to the electrode plates 5a and 6a by driving the air cylinder 33 in a direction perpendicular to the uniaxial direction. In addition to including the inspection table 30, a foot switch 19 as a drive operation unit for driving and operating the air cylinder 33 and a detection voltage are applied to the electrode plates 5a and 6a, and the first interval range is determined according to the detection signal. The terminal processed coaxial cable 10 is the result of detection of the presence or absence of continuity within the inside and the second interval range.
A display device 35 for displaying the inspection result is provided as an inspection result notifying device for notifying the quality of the inspection result as the inspection result. Of these, the electrode plates 5a and 6a are fixed so as to be opposed to each other via a non-conductive spacer, and then are arranged at predetermined positions on the inspection table 30, and the electrode plates 5b and 6b are also the same. Is fixed so as to be opposed to each other via a non-conductive spacer, and one end surface of the spacer is attached to the air cylinder 33. As a result, the electrode plates 5b and 6b are end-processed. The air cylinder 33 fixed to the inspection table 30 is movable in a direction perpendicular to the direction in which the completed coaxial cable 10 is arranged (arrangement direction in the uniaxial direction) (perpendicular direction). Also, inspection table 3
The positioning sensor 17 provided at a predetermined position on the
It is a photomicrosensor and detects that the sensor plate 18 provided on the electrode plates 5b and 6b moves and approaches. The basic function is to detect that the electrode plates 5b and 6b are moving to normal positions. It is for confirmation. Further, the display device 35 is connected to the electrode plates 5a and 6a via the lead wires 11 and 12, respectively, the positioning sensor 17 and the display device 35 are connected to each other by the lead wire 13, and the air cylinder 33 and the foot switch 19 are connected. Lead wire 14 between
Connected by. In addition, a schematic diagram for positioning the tip end of the core wire 1 of the terminal-processed coaxial cable 10 in the vicinity of the positioning sensor 17 on the inspection table 30 and at a position somewhat separated from the electrode plate 5a is shown. Positioning means (a cable stopper, a mark line, or the like can be applied) is provided, and at the start of the inspection, the operator grips the jacket portion 4 of the processed coaxial cable 10 and the tip end side with respect to the shielded wire 3 is the inspection table 30. It is assumed that the inspection start state is obtained by placing it on the top (at this time, the tip end of the core wire 1 is positioned based on the positioning means).
That is, in this inspection apparatus, the operator pushes the foot switch 19 while maintaining the position where the tip of the core wire 1 of the terminal-processed coaxial cable 10 is brought into contact with a cable stopper or the like and is pressed to drive the air cylinder 33. Then, the electrode plates 5b, 6b move closer to the end-processed coaxial cable 10 side and move to the inspection position. At this time, the electrode plates 5a, 6a
The detection voltage is applied to the coaxial cable 10
The inner jacket portion 2 is sandwiched and held between the electrode plates 5a and 6a and the electrode plates 5b and 6b. As a result, if the processed coaxial cable 10 is a non-defective product without a defective shield wire or a defective core wire, the display lamp 35a of the display device 35 is turned on to indicate a non-defective product, and the defective product may have a defective shield wire or a defective core wire. For example, the display lamp 35b of the display device 35 is turned on to indicate defective products. When the inspection is completed, if the operator presses the foot switch 19 again, the air cylinder 33 is driven, and the electrode plates 5b and 6b are accordingly driven.
Moves so as to be separated from the terminal-processed coaxial cable 10, so that the terminal-processed coaxial cable 10 is released.

Also in the display device 35 here, a display lamp 35a such as an LED for displaying OK in response to a detection signal from the positioning sensor 17 at the time of inspecting an intermediate product and NG.
In addition to having a display lamp 35b such as an LED for displaying, a power supply unit is provided for supplying power to these display lamps 35a and 35b and applying a detection voltage to the lead wires 11 and 12.

The operation of the quality inspection of the intermediate product of the processed coaxial cable 10 by this inspection device will be described in more detail. First, the processed coaxial cable 10 is processed into the electrode plates 5a, 6a and the electrode plate 5b. The air cylinder 33 is driven by pressing and turning on the foot switch 19 after positioning and holding the electrode plates 5a and 6a close to the electrode plates 6a and 6b as described above.

When the air cylinder 33 is driven, the electrode plates 5b and 6b are moved by air pressure to the electrode plates 5a and 6a side by being guided by the sensor plate 18 to move the electrode plates 5b and 6b.
The outer wall of b enters the inner walls of the electrode plates 5a and 6a and comes into contact therewith. At this time, when the edge wall of the cutout portion comes into contact with the inner covering portion 2 and eventually reaches a semicircular portion, the inner covering portion 2 is struck on both sides. It will be sandwiched and held. The holding state at this time is an inspectable state, the state is detected by the positioning sensor 17, and the detection signal from the positioning sensor 17 is the lead wire 1.
3 to the display device 35.

Here, the terminal-processed coaxial cable 10 is used.
In the state where the plate thickness is increased while the edge walls of the cutout portions of the electrode plates 5a and 6a and the edge walls of the cutout portions of the electrode plates 5b and 6b overlap each other at two spaced positions of the inner cover portion 2 of FIG. Since it is in contact with the terminal processed coaxial cable 1
If there is a defective shield wire 3a or a defective core wire 1a at 0, a stable electrical connection is established between the electrode plates 5a and 6a and between the electrode plates 5b and 6b, and this state is detected according to the detection signal.
Illuminates the display lamp 35b indicating NG, but if there is no defective shield wire 3a or defective core wire 1a in the processed coaxial cable 10, the gap between the electrode plates 5a and 6a and between the electrode plates 5b and 6b.
The display device 35, which detects this state in response to the detection signal, turns on the display lamp 35a indicating OK.

In this way, it is possible to accurately determine whether the processed coaxial cable 10 is a good product or a defective product regardless of the state of the defective wire of the processed coaxial cable 10. Can be inspected well.

[0040]

As described above, according to the inspection jig for a coaxial cable with a processed end of the present invention, the interval in the uniaxial direction in which the coaxial cable with a processed end extends is the length of the exposed portion of the inner coating portion. By a pair of conductive plates which are arranged to face each other at a distance smaller than a predetermined distance, and which can detect the presence or absence of conduction by sandwiching the inner cover portion on both sides in a direction perpendicular to the uniaxial direction. A pair of conductive plates are used, and specifically, a pair of conductive plates are used as a set of two, and the plate thickness is increased while they are inserted into each other and overlap each other in operation. Since the two spaced apart parts are sandwiched and held in contact with each other, it is possible to obtain a very stable electrical connection between the electrodes, and as a result, it is stable regardless of the quality state of the coaxial cable with a processed terminal and the defective product. Accurately to and easily makes it possible to accurately test. In addition, in the inspection device using the inspection jig having the two sets of the pair of electrode plates, it may be configured such that only one of the two sets of the pair of electrode plates is moved with respect to the other. In addition, since the attached parts can be simple, it is possible to provide a small-scale, low-cost, highly reliable device in which the inspection accuracy of defective products is improved as compared with the conventional inspection device.

[Brief description of drawings]

FIG. 1 is an external perspective view showing the configuration of the main part of an inspection jig for a coaxial cable with a terminal processed according to an embodiment of the present invention.

FIG. 2 is a side view showing a state of an intermediate product inspection for a terminal-processed coaxial cable when the inspection device is simply configured using the terminal-processed coaxial cable inspection jig shown in FIG. (a) relates to inspection at the time of inspecting a good end-processed coaxial cable, and (b) relates to inspection at the time of inspecting a defective end-processed coaxial cable having a defective core wire.

FIG. 3 is a top view showing a basic configuration of an inspection device configured using the terminal processed coaxial cable inspection jig shown in FIG. 1.

FIG. 4 is an external perspective view showing an extracted essential part of the inspection device shown in FIG.

FIG. 5 is a flowchart showing a process procedure when a conventional coaxial cable is processed and assembled as a connector.

FIG. 6 is a side view showing one form of a coaxial cable with a terminal processed, which has become a defective product after the cable terminal processing in the process procedure shown in FIG. 5;

FIG. 7 is a side view showing another form of a terminal-finished coaxial cable that has become a defective product after the cable end processing in the process procedure shown in FIG.

FIG. 8 is a partial cross-sectional top view showing the basic configuration of an inspection apparatus to which a conventional terminal processed coaxial cable inspection jig is applied.

9 is a problem in the case of assembling as a connector for the terminal processed coaxial cable having the defective core wire shown in FIG. 7, which cannot be accurately determined as a defective product by the inspection by the inspection apparatus shown in FIG. FIG. 4A is a view for explaining the above, FIG. 6A is a side view showing a simplified cross-sectional view of an intermediate product inspection of a terminal-processed coaxial cable having a defective core wire, FIG. Shows a side view showing a state of contact crimping using a terminal-processed coaxial cable having a defective core wire, and (c) shows a state of contact assembly using the contact-crimped terminal-processed coaxial cable of (b). It is related to the side view.

[Explanation of symbols]

1 core wire 1a defective core wire 2 Inner coating 3 silludo line 3a Defective shielded wire 4 jacket 5a, 5b, 6a, 6b, 15, 16 Electrode plate 7 Shield cap 8 contacts 9 insulator 10 Terminal processed coaxial cable 11,12,13,14 Lead wire 17 Positioning sensor 18 sensor plate 19 foot switch 20, 30 inspection table 21a, 21b fixed base 22 spring 23a, 23b, 33 Air cylinder 24a, 24b switch 25,35 display device 25a, 25b, 35a, 35b Display lamp

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Claims (4)

(57) [Claims] 1. A coaxial cable extending in a uniaxial direction, wherein a shield wire is provided on the entire circumference of an inner jacket portion coated with a core wire so as to be covered with the outer jacket portion. A terminal formed by cutting off the exposed portion so that the length of the exposed portion of the inner coated portion in the uniaxial direction defined by the distance between the exposed portion of the shield wire and the exposed portion of the core wire has a predetermined interval. A terminal processed coaxial cable inspection jig for inspecting the finished state of a processed coaxial cable, wherein the interval in the uniaxial direction is arranged to face each other at an interval smaller than the predetermined interval, and the uniaxial direction A terminal-processed coaxial cable inspection jig including two sets of a pair of conductive plates capable of detecting the presence or absence of conduction by sandwiching the inner jacket portion on both sides in a direction perpendicular to the above. 2. The inspecting jig for a coaxial cable having a terminal processed according to claim 1, wherein the two sets of the pair of conductive plates have a first axial distance smaller than the predetermined distance. A pair of electrode plates that are arranged to face each other with a gap and form a first set to which a detection voltage is applied, and a second gap whose uniaxial gap is smaller than the first gap. A pair that is arranged to face each other with a space, and that forms a second set in which the outer wall is inserted into and in contact with the inner walls of the pair of electrode plates that form the first set in a direction perpendicular to the uniaxial direction. And an electrode plate of
The pair of electrode plates forming the set and the pair of electrode plates forming the second set each have a cutout portion having a shape capable of sandwiching the inner coating portion on both sides in a direction perpendicular to the uniaxial direction. An inspection jig for a coaxial cable that has been processed into a terminal. 3. The inspection jig for a coaxial cable having a terminal processed according to claim 2, wherein the notch portion is formed in a semicircular shape so that a portion in contact with the inner jacket portion conforms to the shape of the inner jacket portion. The inspection jig for the coaxial cable that has been processed into a terminal. 4. An inspection device using the inspection jig for a coaxial cable having a terminal processed according to claim 2 or 3, wherein at least a pair of electrode plates and sensor plates forming the first set are provided. An air cylinder for mounting one end side of the pair of electrode plates forming the second set and moving the pair of electrode plates forming the second set by air pressure in a direction perpendicular to the uniaxial direction, and an air cylinder of the air cylinder. The movement of the pair of electrode plates forming the second set during driving can be detected by the approach of the sensor plates, and then the first set is formed on the inner sheath portion of the coaxial cable having the terminal processed. Positioning sensors that detect a contact state of the pair of electrode plates and the pair of electrode plates forming the second set and output a detection signal are provided at predetermined positions, respectively, and the pair forming the first set. The second for the electrode plate of
A pair of electrode plates that form a set and are movable by positioning the pair of electrode plates in a direction perpendicular to the uniaxial direction by driving the air cylinder, a drive operating unit for driving and operating the air cylinder, and the first The detection voltage is applied to the pair of electrode plates forming the set, and the result of detecting the presence or absence of conduction in the first interval range and the second interval range in accordance with the detection signal is the terminal. An inspection device comprising an inspection result notifying device for notifying as a result of inspecting the quality of the processed coaxial cable.