MXPA99005041A - Test tool to test connection driving - Google Patents

Abstract

A tool is provided for testing the conduct of a connector with a support for fixing a terminal, comprising a positioning portion for positioning the connector to be inserted therein, and a test portion that can be moved to and from the placement portion. The positioning portion is provided with a guide plate with which it can be brought into contact with the support when protruding from the connector. In this configuration, the tool can detect the forgetfulness of completely pushing the torpor

Description

TEST TOOL TO TRY DRIVING CO-ECTORS BACKGROUND OF THE INVENTION 1. Field of the invention The present invention relates to a test tool for testing the conduction of a connector and recognizing the presence or absence of up support for securing a terminal. This tool can detect when you forget to push the support. 2. Description of the related art Figure 3 is a perspective view of a conventional tool 28 for testing the conduction of a connector. The tool 28 includes a positioning portion 29 for a connector 6, a trial portion 9 which is slidable for the positioning portion 29, a hinge 20 coupled with the tool 9 of pi?-B and a lever 21 which engages with joint 20 to move the test portion. On the other hand, the connector 6 includes a housing 4 of synthetic resin connector, a front support 5 synthetic resin which is inserted into the connector housing 4 from the front thereof and terminals equipped with cable which are inserted into connector housing 4 from the rear of the connector (only cables are shown). The front support 5 engages with the connector housing 4 to form the terminal chambers 30 and serves to fix the cables equipped with the terminal so that they do not detach from the rear of the chambers. In a state of provisional fixing of the front support 5, as shown in Figure 4, the cables equipped with terminal are inserted into the connector housing 4 from the rear. Then, the front support 5 is pushed towards the front end surface of the connector housing 4. Therefore, the front support 5 is completely fixed to the connector housing 4 so that the terminals equipped with cable are fixed in a double manner. The terminals equipped with cable are preliminarily fixed by fixing lancets in the connector housing 4. A projection 15 and a recess or depression 17 are formed on both sides of the rear portion of the connector housing 4, respectively. In figure * 3, two pieces of the positioning portion 29 are vertical towards the left and right sides of the tool 28. Specifically, a guide slot 16 corresponding to the projection 15 of the connector housing 4 is formed vertically in one side, while a contact depression 18 corresponding to the recess 17 of the connector housing 4 is formed on the other side. Therefore, the connector 6 can be inserted into the positioning portion 29 from the top. The test portion 9 is located behind the positioning portion 29 (opposite the front end of the connector 6). Within a front opening 31 of the test portion 9, a probe bolt (not shown) protrudes horizontally to detect the insertion of each terminal equipped with cable into the connector 6. In addition to the probe bolt, inside the front opening 31 , a switching pin 32 projects horizontally to detect the presence or absence of the front support. The probe pin or the switching pin 32 is driven in a projection direction by a helical spring and can be moved within a certain range. The rear portion of the detection portion is covered with a box-shaped bolt cover 19. In Figure 3, in a state where the lever 21 has been pulled, that is, the test portion 9 has been separated from the backward positioning portion, the connector 6 fits into the test portion 9. Subsequently, the lever 21 is tilted forward, as indicated by arrow a. Therefore, the test portion 9 slides forwardly through the hinge 20 so that the forward end 6a of the connector 6 is inserted into the test portion 9. Accordingly, each terminal equipped with cable is placed in contact with each probe bolt and the front support 5 is pushed to contact the switching pin 32. Thus, the conduction of each terminal equipped with cable is tested, and at the same time, the presence or absence of the front support 5 is recognized. When the switching pin is operated, the lack of the front support 5 is observed, for example, by a buzzer sound. However, when the connector is fitted in the tool 28 with the front support 5 protruding forward from the connector housing 4 in the state of provisional fixation as shown in Figure 3, the above conventional tool for testing the conduction of a Connector has the following defect. Specifically, when the test portion 9 moves forward when operating the lever 21, the switching pin 32 strongly strikes the front support 5 so that the switching pin 32 or the front support 6 can be deformed or damaged.

BRIEF DESCRIPTION OF THE INVENTION An object of the present invention is to provide a tool for testing the conduction of a connector which prevents the switching pin or support from being deformed or damaged when a connector is placed in the tool with the support protruding from a connector housing. It should be noted that the support includes a front support, a lateral support and a rear support or the like. In order to obtain the above objective of the present invention, there is provided a tool for testing the conduction of a connector with a support for fixing it to a terminal, comprising: a positioning portion for positioning the connector to be inserted in the same; and a test portion which can be moved to and from the positioning portion, wherein the positioning portion is provided with a guide plate with which it can be brought into contact with the support when protruding from the connector. In accordance with the present invention, the support pushes incompletely into the connector and interferes with the guide plate so that the connector can not be placed in the positioning portion. This allows an incomplete thrust of the support to be detected safely. Therefore, the support does not interfere with a switching pin to detect the presence or absence of the support, thereby preventing the support and the switching pin from being deformed or damaged. The above objective and other objects and features of the present invention will be more apparent from the following description when taken together with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a tool for testing the conduction of a connector according to an embodiment of the present invention, - Figure 2 is a perspective view of a main part of the test tool; Figure 3 is an exploded perspective view of a conventional test tool; and Figure 4 is a perspective view of a connector in a state where it is provisionally fixed to the support.

DESCRIPTION OF THE PREFERRED MODALITY Now with reference to the drawings, a detailed explanation of a tool for testing the conduction of a connector according to an embodiment of the present invention will be provided. Figures 1 and 2 show a test tool 1 according to the present invention. In Figures 1 and 2, similar reference numbers refer to similar elements in the conventional test tool. The driving test tool 1 is characterized in that it has a 5-shaped guide plate 3 which is provided horizontally on the upper end surface of the positioning portion 2 so that the front support 5 interferes with the guide plate 3 in a state where the front support 5 protrudes from the connector housing 4, which makes it impossible to adjust the connector 6 in the positioning portion 2. The placement portion 2 includes a pair of columns 7 and 8 left and right. Columns 7 and 8 protrude beyond the conventional test tool. The upper surfaces of columns 7 and 8 are in the same plane with the test portion 9 behind it. By using the screws 10, the shaped guide plate 3 is fixed to the upper end surfaces of the columns 7 and 8. The test portion 9 can be moved along the lower surface of the guide plate 3 . The guide plate 3 is made of metal or hard resin, and consists of parallel side plates 11 on both sides and a main plate (contact plate) integrally coupling the tips of the side plates 11. The bodies of the side plates are fixed to the columns 7 and 8 by screws 10, respectively. The internal width between the pair of side plates 11 is adjusted to be equal to or slightly greater than that of the pair of columns 7 and 8. A prescribed connector 6 can be inserted between the pair of side plates 11 from the top. The internal space of the guide plate 3 in the form of 1 serves as an opening 13 for inserting the connector (figure 2). The side plates 11 protrude horizontally towards the test portion 9 from the columns 7 and 8 so that the main plate 12 is located horizontally in the vicinity of, or in contact with the upper surface of the test portion 9. The main plate 12 is supported by the upper face of the test portion 9. Therefore, when the front support 5 comes into contact with the main plate 12, the guide plate 3 which is a cantilever, can be supported without twisting. For this reason, the guide plate 3 is prevented from deforming or damaging and the protruding portion 5a of the front support 5 can be accurately detected. A guide groove 16 corresponding to the projection 15 of the connector housing 4 is formed vertically on a column 7 while the contact depression 18 corresponding to the recess 17 of the connector housing 4 is formed on the other column 8. The upper opening of the guide groove 16 is located in a position slightly lower than the guide plate 3, while the contact depression 18 is located in a much lower position than the upper opening of the guide groove 16. In such a configuration, before the projection 15 moves within the guide groove 16, the front support 5 contacts the guide plate 3 so that the projection 15 can not be forcedly engaged in the groove 16 of the guide. guide. Therefore, it can be prevented that the connector housing 4 or the front support 5 become deformed or damaged. The distance between the front end surface 16a of the guide groove 16 and the inner end 12a of the main plate 12 is set equal to or slightly greater than the length L of the connector housing 4 in a connector placement direction. Due to such dimensioning, when the front support 5 protrudes forward from the housing 4 of connector, the projection 5a of the front support 5 interferes with the main plate 12 of the guide plate 3 so that the projection 15 of the connector housing 4 can not be engaged in the guide groove 16 of the positioning portion 2 . In this way, the forgetting of a full thrust of the front support 5 can be detected safely. In Figure 1, the reference number 19 indicates a bolt cover; the number 20 a joint and the number 21 a lever. The test portion 9 engages the lever 21 through a hinge 20. The test portion 9 is slidable in a longitudinal direction in a station frame 22. The positioning portion is fixed to the front of the frame 22 of station. The lever 21 is rotatably supported by the station frame 22 through the bolt 23. A structure is also known in which the test portion 9 is moved by a cam cam (not shown) of the lever 21 without using the articulation 20. The test portion 9 contains a probe pin (not shown) to detect the conduction of each terminal equipped with cable inside the connector 6, and a switching pin (not shown) to recognize the presence or absence of the support 5. Forward. In Figure 1, in a state where a lever 21 has been pulled to retract the test portion 9, the connector 6 is placed in the d-positioning portion 2. In this case, as described above, if the front support 5 protrudes from the connector housing 4, it contacts the upper surface of the main plate 12 of the guide plate 3 so that the connector 6 can not be placed. another part, if the front support 5 has been pushed completely into the housing 4, does not interfere with the guide plate 3 so that the connector 6 can be placed uniformly in the positioning portion 2. By tilting the lever 21 forward, the lead-in conduit equipped with wire is checked with the probe bolt and at the same time the presence or absence of the front support 5 is recognized. The guide plate 3 according to this embodiment serves not only to recognize the mounting condition of the front support 5 but also prevents another similar connector from being placed in a wire harness in the driving test tool 1. If an unsuitable connector is combined with a wire harness, the guide plate 3 allows the wrong combination of the connector to be detected. Specifically, in these cases, the &- connector housing of the unsuitable connector makes contact with the main plate 12 on the side plate of the guide plate 3 so that the connector 6 can not be placed in the portion 2 of placement. It should be noted that the connector housing makes contact with the side plate when its front end is shaped to project laterally. By preparing various kinds of guide plates that correspond to the various connectors, it is possible to test the conduction of these conductors and the state of assembly of their front supports. In this case, the shapes of guide plates are determined to correspond to the various connectors having different external shapes (particularly different lengths L and shapes of both sides of the front ends). In the tests, only the guide plate 3 is exchanged by the same driving test tool 1. The guide plate 3 can be easily exchanged when removing the two screws 10.

Claims (3)

1. A tool for conducting test of a connector with a support for fixing a terminal, characterized in that it comprises: a positioning portion for placing the connector to be ited therein; and a test portion which can be moved to and from the positioning portion, wherein the positioning portion is provided with a guide plate with which the support, when protruding from the connector, can be brought into contact when protruding from the connector

2. The tool according to claim 1, characterized in that the guide plate is formed in a .3-shape consisting of a main plate and two side plates.

3. The tool according to claim 1, characterized in that the test portion includes a probe pin for testing conduction with the terminal and a switching pin for recognizing the presence or absence of the support.