JP3814124B2 - Connector terminal tester - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector terminal inspection device, and in particular, in a connector attached to an end of a wire harness formed by bundling a plurality of electric wires, the continuity of the electric wire terminals fixedly accommodated at one end of the plurality of electric wires and The present invention relates to a connector terminal inspection device used for inspecting an insertion posture.
[0002]
[Prior art]
Conventionally, as this type of inspector, for example, one having a structure as shown in FIG. 5 described in Japanese Patent Laid-Open No. 6-123753 is known.
In the figure, a grooved frame 1 having a U-shaped cross section is provided with an inspection portion 2 at an intermediate position so as to be movable in the direction of the groove, and a connector C to be inspected at one end thereof. A connector holding portion 3 that is held at a predetermined position is fixedly provided. The connector C is held in the connector holding unit 3 so that the connector mounting surface side of the connector C to which the mating connector is mounted faces the inspection unit 2 side. The inspection unit 2 includes an inspection probe 22 that protrudes from the front side facing the connector C held by the connector holding unit 3.
[0003]
Although a detailed description is omitted, the connector holding portion 3 has a shape and structure that allows the connector C to be accurately positioned without rattling when the connector C is mounted and stored in the connector holding portion 3 from above. Is formed. The connector C mounted and housed in the connector holding portion 3 contains a plurality of unillustrated wire terminals whose ends are electromechanically connected, and the connector holding portion 3 is an electric wire extending from each wire terminal. The wire harness W / H, which is a bundle of wires bundled together, has a shape and structure that can be pulled out.
[0004]
On the other hand, an operation lever 41 for moving the inspection unit 2 in the groove of the frame 1 is provided at the other end of the frame 1, and the operation lever 41 is connected via a link 42 attached to the action point. Are connected to the rear surface of the inspection unit 2, and the operation lever 4 and the link 42 constitute the operation unit 4. By pushing the operation lever 41 forward and upright, a pressing force and a pulling force are applied to the inspection unit 1, 2 can be reciprocated on the frame 1.
[0005]
In addition, as shown in FIG. 6, the inspection unit 2 has a concave portion 22 in which the connector mounting surface side of the connector C is slightly fitted on the front surface side, and extends in the moving direction of the inspection unit 2 on the bottom wall portion of the concave portion 22. A through hole is formed and the inspection probe 22 is inserted, and the head of the inspection probe 22 inserted into the through hole protrudes into the recess 23. Note that a large number of inspection probes 22 are arranged corresponding to the positions of the plurality of wire terminals C1 accommodated in the connector C mounted on the connector holding portion 3.
[0006]
Although not shown, the inspection probe 22 is urged in the connector direction, and is divided into a front probe and a rear probe at a predetermined interval in the middle, and the front probe is in the connector C at the time of inspection. When it comes back in contact with the electric wire terminal, the front probe and the rear probe divided into two parts come into contact.
[0007]
Therefore, the electric wire terminal C1 of the connector C is connected to the inspection circuit unit 5 via the connector C connected to the other end of the wire harness W / H to which the connector C is connected to one end, and the rear probe is directly connected. As described above, the closed circuit formed by the contact of the front probe and the rear probe is connected to the inspection circuit unit, and the current flowing through the closed circuit is connected to the inspection circuit unit. Is detected by the inspection circuit unit, and a continuity test is performed. And when electric current detection is not performed about the electric wire terminal which should form a closed circuit, since the electric wire terminal C1 is not mounted | worn and the mounting attitude | position is improper, contact with the electric wire terminal C1 and a front probe is performed. It is predicted that there is no breakage in the electric wire corresponding to the electric wire terminal.
[0008]
[Problems to be solved by the invention]
However, some connectors have an optional electric wire terminal to which an optional electric wire used only when it is necessary to operate an optional device or an optional function as an electric wire connected to the accommodated electric wire terminal. In what has such an electric wire terminal for an option, the electric wire connected to this was cut off on the way without reaching the connector of the other end of wire harness W / H, and was bundled so that it could be pulled out when needed It is the state wound around the outer periphery of the other electric wire.
[0009]
Since the optional electric wire is an open circuit in this way, as described above, depending on whether the front probe and the rear probe are in contact with each other, a closed circuit is formed via the electric wire of the wire harness W / H. It was not possible to inspect that the optional electric wire terminal was correctly mounted and accommodated in the connector C.
[0010]
Therefore, insert one end of the inspection wire from the wire terminal insertion port side where the wire on the opposite side to the side where the connector is attached, and contact the wire terminal to which the optional wire is connected. By connecting the other end to the inspection circuit section and conducting continuity inspection in the same way as other wire terminals, it is possible to inspect whether the optional wire terminals are inserted in the connector in the correct posture. .
[0011]
However, in the case of such an inspection, in addition to a very troublesome work for inserting the inspection wire into the terminal insertion port and maintaining the contact state of the inspection wire with the wire terminal, as in the case of a waterproof connector There is a problem that it cannot be applied to the case where the terminal insertion port is blocked.
[0012]
Therefore, in view of the above-described conventional problems, the present invention is a connector having an electric wire terminal to which an optional electric wire is connected after being pulled out to be an open circuit, and an electric wire terminal to which an optional electric wire is connected. It is an object of the present invention to provide a connector terminal inspection device that can easily inspect whether or not the device is correctly mounted and accommodated.
[0013]
[Means for Solving the Problems]
  In order to solve the above-mentioned problem, the invention according to claim 1 isEach of multiple wiresA connector holding portion for holding a connector to be inspected having an electric wire terminal fixedly held at one end of the connector, and an inspection probe as a support means so as to be electrically connected to the electric wire terminal of the connector held by the connector holding portion. And an inspection unit that is supported, and is provided such that one of the connector holding unit and the inspection unit moves relative to the other, and the inspection probe includes a front probe and a rear probe. The front probe is biased at least in the direction of the connector so as to be always separated from the rear probe via a gap, and the front probe hits the electric wire terminal in the connector and retracts against the bias at the time of inspection. Contact with the rear probeThe electric wire terminal, the front probe, and the rear probe are electrically connected by the contact, and the connector and the rear probe in which the electric wire terminals fixed to the other ends of the electric wires are accommodated Depending on whether or not a closed circuit is formed through the connected wires, the wire terminals connected to the wire terminals accommodated in the connector are inspected for disconnection or non-connection, and missing or poor posture of the wire terminals.In the connector terminal inspection device, the inspection section has output means that is electrically connected to the rear probe via the front probe when the front probe and the rear probe come into contact with each other.And an output means electrically connected to the rear probe via the front probe corresponding to the electric wire terminal fixed to one end of an optional electric wire whose electric wire terminal is not fixed to the other end of the plurality of electric wires. And the absence of a wire terminal fixed to one end of the option wire or a poor posture depending on whether or not a closed circuit is formed through the wire connected to the rear probe corresponding to the output means.It exists in the connector terminal test | inspection device characterized by this.
[0014]
  In the connector terminal inspection device according to claim 1,Each of multiple wiresA connector holding part for holding a connector to be inspected having a wire terminal fixedly attached to one end of the connector, and an inspection probe supported by the support means so as to be electrically connected to the wire terminal of the connector held by the connector holding part. Any one of the inspection sections is provided so as to move relative to the other. The front probe and rear probe forming the inspection probe are always biased toward the connector so that they are separated from the rear probe through a gap at all times, and the front probe during inspection is a wire terminal in the connector. Contact with the rear probe when retreating against the biasA wire terminal, a front probe, and a rear probe are electrically connected by contact, a connector that accommodates a wire terminal fixed to the other end of the plurality of wires, and a wire connected to the rear probe; Inspect whether the wire connected to the wire terminal accommodated in the connector is disconnected or disconnected, and the wire terminal is missing or poorly positioned, depending on whether a closed circuit is formed throughIt is made like that. And the output means of the inspection unit is electrically connected to the rear probe via the front probe when the front probe and the rear probe come into contact with each other.Output means electrically connected to the rear probe via the front probe corresponding to the electric wire terminal fixed to one end of an optional electric wire whose electric wire terminal is not fixed to the other end of the plurality of electric wires and the output Check for missing or poor posture of the wire terminal fixed to one end of the optional wire depending on whether a closed circuit is formed through the wire connected to the rear probe corresponding to the means.It has become so.
[0015]
  Therefore, when the wire terminal is normally present in the connector, the front probe hits the wire terminal in the connector at the time of inspection and retreats against the bias to contact the rear probe,When the electric wire terminal, the front probe and the rear probe are electrically connected and there is no disconnection or no connection of the electric wire connected to the electric wire terminal accommodated in the connector, the electric wire terminal fixed to the other end of the plural electric wires A closed circuit is formed through the accommodated connector and the wire connected to the rear probe, whereas when such a closed circuit is not formed, it is connected to the wire terminal accommodated in the connector. It is determined that the wire is disconnected or not connected, the wire terminal is missing, or the posture is defective.
In addition, when a wire terminal that is fixed to one end of an optional wire that does not have a wire terminal fixed to the other end of the plurality of wires is normally present in the connector, the output means of the inspection unit is connected via the front probe. A closed circuit is electrically connected to the rear probe through the output means electrically connected to the rear probe via the front probe corresponding to the wire terminal and the electric wire connected to the rear probe corresponding to the output means. Whereas it comes to be formedWhen the wire terminal is not normally present in the connector, the front probe does not come in contact with the wire terminal in the connector and does not move backward against the bias, and does not come into contact with the rear probe. Since it is not electrically connected to the rear probe via the front probe, the output meansAnd afterBy checking the electrical connection with the probe,The wire terminal fixed to one end of the optional wire is in the connector.Check if it exists normallyCheckI can.
[0016]
According to a second aspect of the present invention, in the connector terminal inspection device according to the first aspect, the support means includes a front block that supports the front probe and a rear block that supports the rear probe, and the output means includes: The printed circuit board is formed by a printed circuit board that forms a part of the front block and has an outer edge protruding to the side of the support means, and the printed circuit board is always electrically connected to the front probe and pulled out to the outer edge. It exists in the connector terminal tester characterized by having a wiring pattern.
[0017]
3. The connector terminal inspection device according to claim 2, wherein the supporting means is formed of a front block that supports the front probe and a rear block that supports the rear probe, and an outer edge of the printed circuit board forming a part of the front block. Since the printed circuit board is formed with a wiring pattern that is always electrically connected to the front probe and drawn out to the outer edge, the wiring pattern is formed to project to the side of the support means. In addition to the operation, the output means can be configured easily without providing any separate member.
[0018]
According to a third aspect of the present invention, in the connector terminal tester according to the second aspect, the front probe includes a front conductive pin having a flange formed in an intermediate portion thereof, and a coil spring that biases the front conductive pin toward the connector. The front block includes a front probe receiving hole that movably accommodates the front conductive pin and accommodates the coil spring in a contracted manner between the flange and the wiring pattern of the printed circuit board. And the front conductive pin is held in the front probe receiving hole so that its tip protrudes in the direction of the connector by urging by the coil spring, and the printed circuit board resists the urging. A connector terminal test comprising a through hole that penetrates the rear end of the front conductive pin and allows contact with the rear probe when the front conductive pin is retracted. It resides in the vessel.
[0019]
In the connector terminal tester according to claim 3, the front probe is configured by urging the front conductive pin formed with a flange in the middle portion with a coil spring in the direction of the connector, and the front block includes the front conductive pin. A front probe housing hole is formed to house the coil spring in a movable manner and to retract and house the coil spring between the collar and the wiring pattern of the printed circuit board. The printed circuit board is formed with a through hole that allows its rear end to pass through and allow contact with the rear probe when the front conductive pin resists urging. Therefore, in addition to the operation of claim 2, the output means is a coil spring that biases the printed circuit board forming a part of the support block and the front conductive pin. It is possible to form Te.
[0020]
According to a fourth aspect of the present invention, there is provided the connector terminal tester according to the third aspect, wherein the rear probe includes a rear conductive pin having a flange formed in an intermediate portion, and a coil spring that biases the rear conductive pin toward the connector. The rear block movably accommodates the rear conductive pin, and the coil spring is contracted between the flange and the rear conductive pin is biased toward the connector by the coil spring. A connector terminal, wherein the rear conductive pin is held in the rear probe receiving hole so that a rear end portion of the rear conductive pin protrudes in a direction opposite to the connector. It exists in the inspection device.
[0021]
5. The connector terminal inspection device according to claim 4, wherein the rear probe is formed by energizing the rear conductive pin formed with a flange in the middle with a coil spring in the direction of the connector, and the rear conductive pin is moved to the rear block. The coil spring is retracted between the flange and the rear conductive pin is urged toward the connector by the coil spring to form a rear probe receiving hole. Is held in the rear probe housing hole so as to protrude in the direction opposite to the connector. In addition to the action of the invention of claim 3, the rear end of the front conductive pin abuts on the front end of the rear conductive pin in addition to the action of the invention according to claim 3. The rear conductive pin can move back against the bias, allowing for dimensional variations and determining the final force that the front conductive pin exerts on the wire terminal. Kill.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a connector terminal inspection device according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing an embodiment of an inspection unit which is a main part of a connector terminal inspection device according to the present invention, and FIG. 2 is an exploded perspective view of the inspection unit of FIG. Parts that are the same as or correspond to those of the conventional one described above are given the same reference numerals.
[0023]
In FIG.1 and FIG.2, illustration is abbreviate | omitted about the connector holding part which hold | maintains the connector C (FIG. 1) which has the electric wire terminal to which the electric wire was connected, and is shown only about the test | inspection part 2. FIG. In these drawings, an inspection unit 2 is arranged in correspondence with the position of the electric wire terminal C1 of the connector C held by a connector holding unit (not shown), and an inspection probe 22 that makes an inspection by making contact with the electric wire terminal C1. And a support block 23 that supports the probe 22.
[0024]
The inspection probe 22 has a front probe 22a and a rear probe 22b which are divided into two parts. As shown in FIG. 1, the inspection probe 2 and the connector C held by the connector holding part are always separated from each other. 22a and the rear probe 22b are held apart via a gap g. The front probe 22a includes a front conductive pin 22a1 having a flange 22a11 formed at an intermediate portion, and a coil spring 22a14 that biases the front conductive pin 22a1 toward the connector C. Further, the rear probe 22b includes a rear conductive pin 22b1 having a flange 22b11 formed in an intermediate portion, and a coil spring 22b14 that biases the rear conductive pin 22b1 toward the connector C.
[0025]
As illustrated, the support block 23 includes a front block 23a that supports the front probe 22a and a rear block 23b that supports the rear probe 22b. The front block 23a includes a pin block 23a1, a front pin stopper plate 23a2 fixed to the front (connector side) of the pin block 23a1, and a printed board 23a3 fixed to the rear (opposite side of the connector) of the pin block 23a1. The printed board 23a3 is formed in such a size that its upper edge protrudes above the support block 23. The rear block 23b includes a pin block 23b1 and a rear pin stopper plate 23b2 fixed to the rear of the pin block 23b1 (on the side opposite to the connector).
[0026]
In the front block 23a, the pin block 23a1 is formed with a through hole 23a11 having an inner diameter through which the flange 22a11 of the front conductive pin 22a1 is movable, and the front end portion 22a12 of the front conductive pin 22a1 is movable on the front pin stopper plate 23a2. A through hole 23a21 having an inner diameter that does not pass the flange 22b11 is formed, and a through hole 23a31 having an inner diameter that allows the rear end portion 22a13 of the front conductive pin 22a1 to move but does not pass the flange 22a11 is formed on the printed board 23a3. Yes. The through hole 23a11 of the pin block 23a1, the through hole 23a21 of the front pin stopper plate 23a2, and the through hole 23a31 of the printed circuit board 23a3 accommodate the front conductive pin 22a1 movably, and the coil spring 22a14 is connected to the flange 22a11 and the printed circuit board. A front probe housing hole 23a4 is formed between the housing 23a3 and the housing 23a3.
[0027]
The front conductive pin 22a1 accommodated in the front probe accommodation hole 23a4 is held in a state where its tip 22a12 protrudes in the direction of the connector C through the through hole 23a21 of the front stopper plate 23a2 by urging by the coil spring 22a14. . The printed board 23a3 has a wiring pattern 23a32 extending from the through hole 23a21 in which the rear end portion of the front conductive pin 22a1 is movable to the upper edge portion. Since the coil spring 22a14 contracted between the flange 22a11 of the front conductive pin 22a1 and the printed circuit board 23a3 is always in contact with the wiring pattern 23a32 of the printed circuit board 23a3, the front conductive pin 22a1 passes through the coil spring 22a14. The wiring pattern 23a32 of the printed board 23a3 is always electrically connected. An output pin 23a33 soldered so as to be electrically connected to the wiring pattern 23a32 extending so far is provided on the upper edge portion of the printed board 23a3.
[0028]
In the rear block 23b, the pin block 23b1 has a large-diameter portion 23b111 in which the flange 22b11 of the rear conductive pin 22b1 can move, and a small-diameter portion 23b112 in which the tip portion 22b12 of the rear conductive pin 22b1 can move but does not pass the flange 22b11. The rear pin stopper plate 23b2 is formed with a through hole 23b21 having an inner diameter through which the rear end portion 22b13 of the rear conductive pin 22b1 can move but does not pass through the flange 22b11. In the through hole 23b11 of the pin block 23b1 and the through hole 23b21 of the rear pin stopper plate 23b2, the rear conductive pin 22b1 is movably accommodated, and the coil spring 22b14 is contracted between the flange 22b11 and the printed board 22b12. The rear probe receiving hole 23b3 is formed.
[0029]
The rear conductive pin 22b1 accommodated in the rear probe accommodation hole 23b3 is inserted into the through hole 23b11 of the pin block 23b1 by the urging force of the contracted coil spring 22b14, and the flange 22b11 is connected to the large diameter portion 23b111. It is held in contact with the stepped portion between the small diameter portion 23b112. In this state, the rear end portion 22b13 of the rear conductive pin 22b1 protrudes in the opposite direction to the connector C through the through hole 23b21 of the rear pin stopper plate 23b2.
[0030]
The front conductive pin 22a1 biased by the coil spring 22a14 has its tip 22a12 projected and held in the direction of the connector C through the through hole 23a21 of the front stopper plate 23a2, and the rear conductive pin 22b1 biased by the coil spring 22b14. In the state where the flange 22b11 is held in contact with the step portion between the large diameter portion 23b111 and the small diameter portion 23b112, there is a gap between the rear end of the front conductive pin 22a1 and the front end of the rear conductive pin 22b1. The dimensions of each part are determined so that the gap g described above is formed.
[0031]
As the size of the gap, for example, about 1 to 2 mm is appropriate. In addition, the rear end of the front conductive pin 22a1 has a hemispherical shape, and the front end of the rear conductive pin 22b1 has a flat shape, thereby stabilizing the electrical conduction during contact. Furthermore, the front conductive pin 22a1 has a flat tip so as to secure a contact surface with the wire terminal of the connector C. The rear end of the rear conductive pin 22b1 has a hemispherical shape, and electrical conduction at the time of contact is stabilized.
[0032]
Although not shown in FIG. 1, the pin block 23a1, the front pin stopper plate 23a2 and the printed circuit board 23a3 constituting the front block 23a of the support block 23, and the pin block 23b1 and the rear pin constituting the rear block 23b. The stopper plate 23b2 is assembled as the inspection unit 2 by being superimposed in the horizontal direction on the assembly frame 24 shown in FIG. 1, a guide member 25 having a recess 25a into which the connector mounting surface side of the connector C is fitted is mounted on the connector side of the front block 23a, and this recess 25a is inspected at the time of inspection. The connector mounting surface of the connector C is inserted into the connector C, and the connector is guided to the inspection unit 2 so that the two are stably coupled.
[0033]
Further, as shown by a dotted line in FIG. 1, a connector holding portion 3 that is relatively movable with respect to the above-described inspection portion 2 is provided to face the guide member 25, and a front portion is provided by means not shown. The probe is guided so as to move along the urging direction of the probe, and is separated from the inspection unit 2 during non-inspection, and approaches the inspection unit 2 during inspection.
[0034]
Further, in FIG. 1 and FIG. 2, only one inspection probe 22 supported by the support block 23 is shown for the sake of simplicity of illustration, but in actuality, the number of terminals of the connector is shown. A corresponding number of inspection probes 22 are supported corresponding to the electric wire terminals, and the front probe accommodation holes 23a4 and the rear probe accommodation holes 23b3 for accommodating the inspection probes 22 also correspond to the electric wire terminals in the front block 23a and the rear. Each of the blocks 23b is formed.
[0035]
Moreover, as printed circuit board 23a3 used for the test | inspection part 2 which test | inspects the connector C which has eight electric wire terminals, as shown in FIG. 3, eight through-holes which the rear-end part of the front conductive pin 22a1 became movable 23a31 and eight wiring patterns 23a32 extending from each of the through holes 23a31 to the side edge are formed in advance. In the case of this printed circuit board 23a3, since the through holes 23a21 and the wiring patterns 23a32 are provided in a number corresponding to the wire terminals of the connector C, the wiring patterns 23a32 corresponding to the wire terminals to which the disconnected wires are connected are provided. By providing the output pin (23a33 in FIG. 1), it is possible to cope with any wire terminal being cut off by one type of printed board 23a3. The eight wiring patterns 23a32 are formed using both sides of the substrate in consideration of routing.
[0036]
In the terminal inspection device having the above-described configuration, as shown in FIG. 1, after a connector (not shown) is mounted from above the connector holding portion 3, an operating means (not shown) is operated to apply force to the connector holding portion 3. When operated in the direction of the inspection unit 2, the connector mounting surface side of the connector held by the connector holding unit 3 is fitted into the recess 25 a of the guide member 25 of the inspection unit 2 as shown in FIG. 4. When the connector C has the electric wire terminal C1 in the normal insertion posture, the front conductive pin 22a1 of the inspection probe 22 interferes with the electric wire terminal C1, and therefore retracts against the bias of the coil spring 22a14. The end contacts the tip of the rear conductive pin 22b1. The contact between the front conductive pin 22a1 and the rear conductive pin 22b1 provides electrical continuity between the electric wire terminal C1, the front conductive pin 22a1, and the rear conductive pin 22b1, and the output pin 23a33, the wiring pattern 23a32 of the printed board 23a3, and the coil. Electrical conduction between the spring 22a14, the front conductive pin 22a1, and the rear conductive pin 22b1 is also achieved.
[0037]
Therefore, when the electric wire connected to the electric wire terminal C1 and the electric wire connected to the rear conductive pin 22b1 are connected, a circuit passing through the electric wire terminal C1 is formed, and electrical conduction is achieved. At this time, if the electric wire connected to the electric wire terminal C1 of the connector is disconnected or the electric wire is not connected, electrical continuity cannot be obtained. If the electric wire terminal C1 is missing or has a poor posture, the inspection probe 22 Since the front conductive pin 22a1 does not normally interfere with the wire terminal C1, the front conductive pin 22a1 does not retract against the bias of the coil spring 22a14, and its rear end does not come into contact with the front end of the rear conductive pin 22b1, so conduction is impossible. The defective product is confirmed. Therefore, the above-described connector terminal tester uses the number of the inspection probes 22 corresponding to the number of the wire terminals of the connector corresponding to the positions of the wire terminals of the connector and supported by the support block 23 to thereby It is also possible to conduct a continuity test on the wires connected to the.
[0038]
On the other hand, when the electric wire connected to the electric wire terminal C1 is an optional electric wire that is cut open and becomes an open circuit, a circuit passing through the electric wire terminal C1 may be formed to achieve electrical continuity. Absent. Therefore, when inspecting the shortage or the posture failure of this type of wire terminal C1, the wire connected to the output pin 23a33 and the wire connected to the rear conductive pin 22b1 are connected. At this time, the output pin 23a33, the printed board By checking whether or not a circuit passing through the wiring pattern 23a32 of 23a3 and the coil spring 22a14 is formed and electrical conduction is achieved, it is possible to inspect the shortage or the posture failure of the wire terminal C1 to which the optional wire is connected.
[0039]
In the above-described embodiment, when the front probe 22a and the rear probe 22b are in contact with each other, the coil that biases the front conductive pin constituting the front probe as means for being electrically connected to the rear probe via the front probe. Although the spring and the wiring pattern of the printed circuit board that is always in contact with the spring are used, the present invention is not limited to this, and other configurations are possible. For example, you may make it pull out the brush which always contacts a front probe. However, the configuration that uses the coil spring that urges the front conductive pin and the wiring pattern of the printed circuit board that is always in contact with the wiring pattern of the printed circuit board can be selected for the same wire terminal arrangement. Since it is possible to cope with this, it has a high commonality that can be used for inspection of more connectors, and is effective in simplifying the configuration and achieving high integration.
[0040]
【The invention's effect】
  As described above, according to the first aspect of the present invention, when the wire terminal is normally present in the connector, the front probe at the time of inspection hits the wire terminal in the connector and moves backward against the bias. In contact with the probe, the output means of the inspection unit is electrically connected to the rear probe via the front probe. On the other hand, when the wire terminal does not exist normally in the connector, the front probe during inspection is in the connector. No contact with the rear probe against the urging force, no contact with the rear probe, and the output means of the inspection unit is not electrically connected to the rear probe via the front probe,For a plurality of wires whose wire terminals are fixed to both ends and accommodated in the connector, the closed circuit is provided through the connector that accommodates the wire terminal secured to the other end of the wire and the wire connected to the rear probe. Can be inspected for disconnection or disconnection and missing or poor posture of the wire terminal, and for the optional wire with the wire terminal not fixed to the other end, Closed circuit through the output means electrically connected to the rear probe via the front probe corresponding to the electric wire terminal fixed to this optional electric wire and accommodated in the connector, and the electric wire connected to the rear probe corresponding to this output means By checking whether or not is formed, it is possible to inspect whether or not the electric wire terminal is normally present in the connector. In particular, using the same front probe and rear probe for inspecting a plurality of wires with wire terminals fixed at both ends, a plurality of wires with wire terminals fixed at both ends and wire terminals only at one end For both the optional cable andIt is possible to obtain a connector terminal inspection device that can easily inspect whether or not the electric wire terminals are correctly mounted and accommodated.
[0041]
According to the invention described in claim 2, since the output means can be easily configured without forming a part of the front block with a printed circuit board and providing any other member, in addition to the effect of the invention described in claim 1, A compact and inexpensive connector terminal tester can be obtained.
[0042]
According to the invention described in claim 3, since the output means can be formed by the printed circuit board that forms a part of the support block and the coil spring that biases the front conductive pin, the effect of the invention described in claim 2 is achieved. In addition, a more compact and inexpensive connector terminal inspection device can be obtained.
[0043]
According to the fourth aspect of the present invention, when the rear end of the front conductive pin comes into contact with the front end of the rear conductive pin due to the backward movement of the front conductive pin, the rear conductive pin can be moved back against the bias, and the variation in dimensions is allowed. Since the force finally exerted on the electric wire terminal by the conductive pin can be determined, in addition to the effect of the invention of claim 3, a large unnecessary extra force is applied to the electric wire terminal of the connector to be inspected to damage the electric wire terminal. A connector terminal tester without worry.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a main part of a connector terminal inspection device according to the present invention.
FIG. 2 is an exploded perspective view showing an essential part of a connector terminal inspection device according to the present invention in an exploded manner.
3 is a plan view showing a detailed specific example of the printed circuit board in FIGS. 1 and 2. FIG.
4 is a side view corresponding to the side view of FIG. 1, showing a state at the time of inspection.
FIG. 5 is a perspective view showing an example of a conventional connector terminal inspection device.
6 is a side view in which a part of the connector terminal inspection device in FIG. 5 is cut away. FIG.
[Explanation of symbols]
C connector
C1 Electric wire terminal
2 Inspection Department
22 Inspection probe
22a Front probe
22a1 Front conductive pin
22a11 鍔
22a14 coil spring
22b Rear probe
22b1 Rear conductive pin
22b11 鍔
22b13 coil spring
23 Support means
23a Front block
23a3 output means
23a31 Through hole
23a32 Wiring pattern
23a4 Front probe receiving hole
23b Rear block
23b3 Rear probe accommodation hole
3 Connector holding part

Claims (4)

A connector holding part for holding a connector to be inspected having a wire terminal fixedly held at one end of each of the plurality of electric wires, and an inspection so as to be electrically connected to the wire terminal of the connector held by the connector holding part An inspection part in which the probe is supported by the support means,
Either one of the connector holding part and the inspection part is provided to move relative to the other,
The inspection probe has a front probe and a rear probe, and the front probe is biased at least in the direction of the connector so as to be always separated from the rear probe through a gap, and the front probe is in the connector at the time of inspection. Configured to come into contact with the rear probe when retreating against the biasing against the wire terminal of
The wire terminal, the front probe, and the rear probe are electrically connected by the contact, and a connector that accommodates a wire terminal fixed to the other end of the plurality of wires and a wire connected to the rear probe, In the connector terminal tester for inspecting the disconnection or non-connection of the electric wire connected to the electric wire terminal accommodated in the connector and the lack of the electric wire terminal or the poor posture depending on whether a closed circuit is formed through ,
The measurement part, when said front probe and the rear probe is in contact, have a output means which is the rear probe and electrically connected through the forward probe,
Output means electrically connected to the rear probe via the front probe corresponding to the electric wire terminal fixed to one end of an optional electric wire whose electric wire terminal is not fixed to the other end of the electric wire, and the output means A connector for inspecting a missing or poor posture of a wire terminal fixed to one end of the optional wire depending on whether a closed circuit is formed through a wire connected to the rear probe corresponding to Terminal tester. The support means includes a front block that supports the front probe and a rear block that supports the rear probe,
The output means is formed by a printed circuit board that forms part of the front block and whose outer edge protrudes to the side of the support means,
The connector terminal inspection device according to claim 1, wherein the printed circuit board has a wiring pattern that is always electrically connected to the front probe and drawn to the outer edge. The front probe includes a front conductive pin having a flange formed in an intermediate portion thereof, and a coil spring that biases the front conductive pin toward the connector,
The front block has a front probe receiving hole 23a4 that movably accommodates the front conductive pin and accommodates the coil spring in a contracted manner between the flange and the wiring pattern of the printed circuit board,
The front conductive pin is held in the front probe housing hole so that the tip of the front conductive pin protrudes in the direction of the connector by urging by the coil spring,
3. The connector terminal inspection according to claim 2, wherein the printed circuit board has a through hole that penetrates a rear end portion thereof and allows contact with the rear probe when the front conductive pin that resists the bias is retracted. vessel. The rear probe includes a rear conductive pin having a flange formed in an intermediate portion thereof, and a coil spring that biases the rear conductive pin toward the connector,
The rear block accommodates the rear conductive pin movably, and a rear probe housing that retracts the coil spring between the hook and urges the front conductive pin toward the connector by the coil spring. Have holes,
The connector terminal inspector according to claim 3, wherein the rear conductive pin is held in the rear probe receiving hole so that a rear end portion of the rear conductive pin protrudes in a direction opposite to the connector.

Images