JP6161165B2 - Test jig - Google Patents

Description

  The present invention relates to a test jig, and more particularly, to a test jig for mounting on a terminal block for testing.

  Patent Document 1 describes a test wiring jig for an up-screw type terminal block (the test wiring jig is also referred to as a test jig). This test jig has a test conductive terminal having spring properties, and is inserted between the lower end portion of the screw with the terminal block raised and the conductive terminal.

Japanese Patent No. 4800398

  However, the test jig described in Patent Document 1 is in contact with the screw of the terminal block and the conductive terminal. Therefore, it was necessary to pay attention to the position of the screw during insertion. Furthermore, the retention after insertion was unstable. Therefore, the operator could not fully trust at least whether the contact pressure variation or the test jig could be removed.

  Therefore, an object of the present invention is to provide a test jig that can be pressed with a stable contact pressure and is difficult to come off during a test.

  A first aspect of the present invention is a test jig for performing a test by being mounted on a terminal block, and an insulator holding portion that is hooked on a protrusion provided above the conductive terminal of the terminal block. A conductive portion that contacts the conductive terminal of the terminal block; and an elastic portion that applies pressure to the conductive portion and press-contacts the conductive terminal of the terminal block.

  A second aspect of the present invention is the test jig according to the first aspect, wherein the conductive portion and the elastic portion are separate members, and the conductive portion is fixed so that one end can be connected to an external wiring. The other end is movable and is attached to the terminal block, and the elastic portion applies pressure at a position between the one end and the other end of the conductive portion.

  A third aspect of the present invention is a test jig according to the first or second aspect, wherein the terminal block is a screw-up type terminal block, and when the protrusion is raised from the conductive terminal, The conductive portion is for inducing a screw, and the conductive portion is in pressure contact with the conductive terminal and is not in contact with the screw at the time of mounting.

  A fourth aspect of the present invention is the test jig according to any one of the first to third aspects, wherein the lower surface of the conductive portion is convex downward at least on the other end side.

  According to a fifth aspect of the present invention, there is provided a test jig according to any one of the first to fourth aspects, wherein the test jig includes a contact portion that contacts the terminal block when mounted under the conductive portion. Have.

  According to each aspect of the present invention, the conductive portion of the test jig is not elastic, and pressure is applied by another elastic portion, so that the contact pressure can be stabilized. Furthermore, when the test jig is mounted on the terminal block, the conductive portion of the test jig may be pressed against the conductive terminal of the terminal block, and when the test jig is removed, the test jig may be tilted upward. Therefore, the test jig can be easily attached to or removed from the terminal block. Further, since the holding portion is hooked on the protrusion of the terminal block and the conductive portion presses the conductive terminal of the terminal block, the test jig is difficult to be removed at least in the horizontal direction during the test.

  Furthermore, according to the second aspect of the present invention, the conductive portion is a single member, and the conductive portion is fixed to the case of the test jig by a screw that can be connected to the external wiring. This can be realized with less.

  Furthermore, the 3rd viewpoint of this invention performs a test using a conductive terminal not using the screw of a screw-up type terminal block. For example, as described in Patent Document 1, it is essentially different from that using both screws and conductive terminals.

  Furthermore, according to the 4th viewpoint of this invention, it is a structure which is easy to rotate in the state which the holding | maintenance part latched on the protrusion of the terminal block.

  Furthermore, according to the fifth aspect of the present invention, since the test jig is held at three locations in a state of being mounted on the terminal block, it has a structure that is difficult to come down in addition to the horizontal direction during the test. is there. Furthermore, it can prevent tilting downward.

It is a figure which shows an example of a structure of the test jig concerning this invention. It is a figure for demonstrating a motion when mounting | wearing the test fixture 1 with the terminal block 21. FIG. FIG. 3 is a view showing a state in which a test jig 1 is mounted on a terminal block 21. It is a figure for demonstrating a motion when removing the test jig 1 from the terminal block 21. FIG. It is a figure which shows another example of a structure of the test jig concerning this invention.

  Embodiments of the present invention will be described below with reference to the drawings. The embodiment of the present invention is not limited to the following examples.

  FIG. 1 is a diagram showing an example of the configuration of a test jig according to the present invention. (A) is a plan view, (b) is an internal structure diagram, (c) is a front view, and (d) is a left side view. (E) is a figure showing an example of other composition.

  The test jig 1 is for mounting on a terminal block and performing a test. The test jig 1 includes a case 3, a cover 5, a holding part 7 (an example of “holding part” in the claims), a test conductive terminal 9 (an example of “conductive part” in the claims), a terminal A screw 11, a leaf spring 13 (an example of an “elastic portion” in the claims of the present application), a contact portion 15 (an example of an “contact portion” in the claims of the present application), a connection screw 17, and a connection screw hole 19 are provided. .

  Case 3 is an insulator and is for holding each member. The cover 5 is for covering one surface of the case 3.

  The holding part 7 is provided in the case 3 and is an insulator. As will be described later, when the test jig 1 is mounted on the terminal block, the test jig 1 is hooked on the protrusion of the terminal block. When removing the test jig 1 from the terminal block, as shown in FIG. 4, the test jig 1 is rotated upward around the portion where the holding portion 7 is hooked.

  The test conductive terminal 9 is a conductor. One end on the same side as the holding portion 7 is attached to the terminal block and contacts the conductive terminal of the terminal block. This one end of the test conductive terminal 9 has a thin tip, and the lower surface is convex downward. Accordingly, the test conductive terminal 9 is pressed and the test jig 1 is mounted, or the test jig 1 is easily removed by rotating around the portion where the holding portion 7 is hooked. . Moreover, the test conductive terminal 9 is in a state where the side attached to the terminal block can move freely due to the uneven shape of the fitting portion between the case 3 and the test conductive terminal 9. The other end has a female screw, and the test conductive terminal 9 can be connected to the external wiring by the terminal screw 11. With the terminal screw 11, for example, a crimp terminal, a Faston terminal, or a short bar for short-circuiting adjacent terminals can be tightened. In addition, as shown in FIG. 1 (e), by installing a hole in the 3a part of the case 3 and installing a cylindrical conductor in the 3a part, it is possible to replace the short bar and improve the safety during the test. Can be improved.

  In the case 3, the leaf spring 13 applies pressure to the test conductive terminal 9 in the downward direction (opposite to the holding portion 7) in FIG. The test conductive terminal 9 is fixed with a terminal screw 11 on the non-attached side. Therefore, the pressure by the leaf spring 13 appears on the side where it is attached.

  In this embodiment, the test conductive terminal 9 is a single conductive terminal having no elasticity. The leaf spring 13 incorporated in the case has a pressure that contacts the direction of the conductive terminal of the terminal block. The contact pressure can be stabilized by applying the contact pressure by the leaf spring 13 which is a member different from the test conductive terminal 9.

  The contact portion 15 is a portion that contacts the terminal block when the test jig 1 is mounted on the terminal block. Since the test jig 1 is hooked on the terminal block, when the test jig 1 is mounted, the test jig 1 rotates around the hooked portion.

  The force applied during the test is mainly horizontal and downward. In the horizontal direction, the holding portion 7 is hooked on the protrusion of the terminal block, and the test conductive terminal 9 is structured to be hard to come off because a force is applied to the conductive terminal of the terminal block by a stable contact pressure. Furthermore, downwardly, the contact portion 15 is prevented from moving counterclockwise in FIG. 1 (b) by contacting the terminal block at the time of mounting, and is not easily detached. On the other hand, at the time of removal, it can be easily removed by rotating clockwise in FIG. 1B and tilting upward.

  The connection screw 17 is a screw for connecting a plurality of test jigs. A plurality of terminal blocks are usually connected. Therefore, the test jig can also be attached to and detached from the plurality of connected terminal blocks at the same time by connecting the plurality of test jigs with the connection 17 using the connection screw holes 19.

  Since the present embodiment has a structure in which one test conductive terminal 9 and a leaf spring 13 are provided, the number of parts is small, and the manufacturing cost can be reduced. The test conductive terminal 9 has a structure that can be freely tilted in the case. However, when the test conductive terminal 9 is mounted, the test conductive terminal 9 is held at three positions by the holding portion 7, the test conductive terminal 9, and the contact portion 15, thereby applying a horizontal force. It is difficult to come off in the direction and downward, and can be easily removed by tilting upward.

  FIG. 2 is a diagram for explaining the movement at the time of wearing. As shown in FIG. 2A, the test jig 1 is attached to the terminal block 21. The terminal block 21 is a screw-up type terminal block. The terminal block 21 includes a conductive terminal 23, a screw 25, a protrusion 27, and a terminal block side contact portion 29.

  The conductive terminal 23 has a female screw, and an external wiring can be connected by the screw 25. In FIG. 2, the test jig 1 is mounted with the screw 25 up.

  The protrusion 27 is provided above the conductive terminal 23 in order to support the raised screw. The terminal block 21 is an insulator that protrudes from the wall surface above the opening provided to connect the external wiring to the conductive terminal 23. Generally, it protrudes from both wall surfaces.

  The terminal block side contact portion 29 is provided to contact the contact portion 15 of the test jig 1 when the test jig 1 is mounted on the terminal block 21.

  As shown in FIG. 2B, when mounting, the test conductive terminal 9 of the test jig 1 is pressed against the conductive terminal 23 of the terminal block 21 and inserted, the case 3 is abutted against the terminal block 21, and the pressing force can be loosened. For example, since the leaf spring 13 applies pressure to the test conductive terminal 9, the holding portion 7 of the test jig 1 is hooked on the protrusion 27 of the terminal block 21, and the contact portion 15 is the terminal block side contact portion 29. The test jig 1 is held by the terminal block 21 in contact with the terminal block 21. Thus, the mounting operation is extremely easy.

  FIG. 3 is a view showing a state in which the test jig 1 is mounted on the terminal block 21. The test jig 1 and the terminal block 21 are held at three places. The holding part 7 of the test jig 1 is hooked on the protrusion 27 of the terminal block 27. The test conductive terminal 9 of the test jig 1 is in pressure contact with the conductive terminal 23 of the terminal block 21 by the leaf spring 13. The contact portion 15 of the test jig 1 is in contact with the terminal block side contact portion 29 of the terminal block 21.

  FIG. 4 is a diagram for explaining the movement at the time of removal. By tilting the test jig 1 upward (clockwise in the figure), the test jig 1 rotates around the portion where the holding portion 7 is hooked on the protrusion 25, and the test conductive terminal 9 is connected to the terminal It can be pulled out of the terminal block 21 by being pushed by the conductive terminal 23 of the table and can be easily removed.

  FIG. 5 is a diagram showing another example of the configuration of the test jig according to the present invention. As shown in FIG. 5 (b), the tip of the test conductive terminal of the test jig is formed in the shape provided with the terminal tip 33 as shown in FIG. 5 (a). can do.

  1 Test jig, 3 case, 5 cover, 7 holding part, 9 test conductive terminal, 11 terminal screw, 13 leaf spring, 15 contact part, 17 connection screw, 19 connection screw hole, 21 terminal block, 23 conductive terminal, 25 Screw, 27 Protrusion, 29 Terminal block side contact, 31 Test jig, 33, 35 Terminal tip

Claims (5)

A test jig for testing by mounting on a screw-up type terminal block,
A holding portion of an insulator that is hooked on a protrusion provided above the conductive terminal of the screw-up type terminal block;
A conductive part that does not contact the screw of the screw-up type terminal block, but contacts the conductive terminal;
Test fixture comprising a resilient portion you press the conductive portion before Kishirubeden terminal by applying pressure to the conductive portion. The conductive portion and the elastic portion are separate members,
The conductive portion has one end connected secured to the external wiring, the other end is shall be in contact with the conductive terminals a movable state,
The elastic unit, you press the conductive portion by applying a pressure at a position between said second end and said one end of the conductive portion to the conductive terminal, the test fixture of claim 1, wherein. Before Kishirubeden unit, when worn, is below the lower end of the uploaded screws, not in contact with the screw you up, in contact with the conductive terminals, the test fixture according to claim 1 or 2. 4. The test jig according to claim 1, wherein a lower surface of the conductive portion is convex downward at least on a side attached to the conductive terminal. 5. Having a contact portion on the lower side of the front Kishirube conductive portion in contact with the screw-up type terminal block is installed; test fixture according to any one of claims 1 to 4.

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