JPH11133060A - Testing terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a testing terminal for dealing with the case that a pitch interval of terminals of an element is in an any infinitesimal manner. SOLUTION: A testing terminal 1 comprising an upper portion 2 having a connection part 6 for connecting a conductive wire, an intermediate part 5 having an elasticity, and a lower portion having a contact part 4 is punched to be formed from one metal thin plate. A terminal block can be formed by superposing and integrating a plurality of the terminals 1 via insulating plates. Any pitch interval can be dealt with it by selecting a thickness of the metal thin plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test terminal, and more particularly, to a terminal for conducting a continuity test of a printed circuit board and an electric / electronic device mounted thereon.

[0002]

2. Description of the Related Art In some cases, it is necessary to conduct a continuity test on a printed circuit board and electric / electronic devices mounted thereon. In such a case, since the distance between the terminal portions is often extremely small, conventionally, a coil spring is inserted into a pipe having a small diameter, and a needle protruding from the end of the pipe due to the spring force is connected to a conductive wire. , And the needle was brought into contact with the terminal portion to make contact with it, thereby testing the conduction.

[0003]

However, since it is difficult to insert the coil spring and the needle into the fine pipe itself, the production cost of the test terminal is increased, and the pipe is larger in diameter than the needle. Therefore, simply aligning it sideways will result in a larger pitch interval than the needle itself, so the pitch interval will naturally be constrained,
A continuity test of an element in which terminals are formed at needle pitch intervals has to be performed by directly applying a test terminal to each of the terminals. Therefore, the continuity test itself takes time and is inefficient.

Accordingly, the present invention provides a test terminal capable of coping with a fine pitch interval between terminal portions of an element or the like.

[0005]

According to the present invention, there is provided a test terminal comprising: an upper portion provided with a connection portion connected to a conductive line; a lower portion provided with a contact portion contacting the terminal portion; A middle portion capable of holding elasticity in the up-down direction between them is integrally formed of a thin metal plate.

[0006] The intermediate portion is substantially S-shaped, and at least a through hole is formed in the upper portion. It is characterized in that an insulating plate having high electrical insulation is interposed between them, and they are overlapped and fastened to form a block having contact portions corresponding to the number of terminals of the electric / electronic device.

Therefore, by selecting the thickness of the thin metal plate, it is possible to form a contact portion having a pitch interval that can cope with the pitch interval of the terminal portion of the element or the like, regardless of the pitch interval.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the test terminal 1 has a substantially rectangular upper part 2, a substantially rectangular lower part 3 having a sharply triangular contact part 4, and an intermediate part 5 elastically connecting the upper part 2 and the lower part 3. And a sheet metal integrally formed.
The upper part 2 has a connection portion 6 suitable for connecting a conductive line.
Are formed integrally, and a rectangular through hole 7 for positioning when overlapping and connecting is formed, and the contact portion 4 of the lower portion 3 is a terminal portion 8 of an element or the like (see FIG. 2). ) Can be contacted. The intermediate portion 5 is stamped into a substantially S-shape and intervenes continuously and integrally between the upper portion 2 and the lower portion 3. When pressure is applied to the upper portion 2 or the lower portion 3, the S-shape can be bent and deformed. It can absorb that pressure. The contact portion 4 is formed in a substantially triangular pyramid shape.

Although the contact portion 4 is formed at the right end, four types of test terminals 1 are formed by sequentially displacing the contact portions 4 toward the left end as shown in phantom lines. May be. Further, the connection portion 6 may be arranged to be inclined leftward. The reason why the upper part 2 and the lower part 3 are substantially rectangular is to make it easier to unite when a plurality of test terminals 1 are stacked and integrated, and in this case, a rod 13 having a rectangular cross section is inserted into the through hole 7. Then, the contact portions 4 can be neatly aligned. The shape of the intermediate part 5 is S
Although it is shaped like a letter, depending on the required degree of elasticity, FIG.
, Or a Σ shape as shown in FIG.

The test terminal 1 is formed by stamping a metal plate having a desired thickness with high conductivity by a press or the like, and is made of a relatively hard thin plate such as tungsten having a thickness of about 0.05 mm. However, the thickness dimension is not limited. Therefore, not only can the single test terminal 1 be used alone for a continuity test, but also, as shown in FIGS. A highly electrically insulating insulating plate 9 having a through-hole 10 corresponding to the through-hole 7 is sandwiched and overlapped, and integrated together by a U-shaped holder 11. Square rod 1
3, the terminal block 17 having both ends integrated with the holder 11 can be formed. Holder 11
Is an opening 12 for projecting the connection portion 6 upward.
Having. In the case where the thickness of the test terminal 1 is not an extremely thin plate, as shown in FIG. 8, threaded portions 14 are formed at both ends of the rod 13, and the nut 1 to be screwed to the threaded portion 14 is formed.
6 can be fastened to the holder 11 with the washer 15 interposed therebetween.

As another example for forming the terminal block 17, as shown in FIG. 9, arbitrary notches 2a, 2a such as triangles are formed on opposite sides of the upper part 2 while A notch portion of the test terminal 1 is formed by forming a holder 21 having a U-shaped cross section made of an insulating member such as a synthetic resin in which an arbitrary protrusion portion 20 such as a triangular shape with which the notch portion 2a is engaged is formed on the inner surface thereof so as to face each other. The unit 2a may be engaged with the protruding portion 20, and a plurality of test terminals 1 may be held by the holder 21 with an insulating plate interposed therebetween and a single unit or a plurality of the single units may be appropriately integrated. .

When the terminal block 17 is formed as described above, the thickness of the insulating plate 9 can be arbitrarily selected.
Can be freely changed. Therefore, if one terminal block 17 is formed with a number of test terminals 1 corresponding to the number of terminal portions 8 such as elements with the insulating plate 9 interposed therebetween, there is an advantage that the terminal portion continuity test of the elements etc. can be performed only once. is there. Furthermore, the four types of test terminals 1 described above for the arrangement of the contact portions 4 may be used, and the positions may be shifted one by one as shown in FIG. 10 to form a zigzag arrangement, or as shown in FIG. As described above, the two test terminal blocks 18, 1 each having a phase shifted diagonally to the right in a stepwise manner.
8 may be arranged side by side in one large holder 11a.

Therefore, as shown in FIG. 12, when the contact portion 4 of the terminal block 17 is brought into contact with the terminal portion 8 such as the element 19 at a predetermined pressure, each test terminal 1 becomes, as shown in FIG. The intermediate portion 5 is bent, so that the pressure can be reduced and absorbed. Therefore, even if there is a difference in height between the plurality of terminal portions 8, it is possible to prevent all the contact portions 4 from repelling and separating from the terminal portions 9 without being influenced by the difference in height, thereby performing a reliable conduction test.

[0014]

According to the present invention described above, since a thin metal plate is selected and its thickness is selected and a plurality of the thin plates are overlapped with an insulating plate interposed therebetween, terminals having any pitch interval such as elements can be obtained. A terminal block which can be applied to the portion can be obtained, and the structure can be simplified, the productivity can be improved, and the cost can be reduced. In addition, by integrally molding the elastic portion, the contact portion can be easily and easily made to have a shape having optimal elasticity so as to make contact with the terminal portion without repelling, thereby enabling a reliable conduction test as a whole. .

[Brief description of the drawings]

FIG. 1 is a front view (A) of a test terminal according to the present invention.
And side view (B)

FIG. 2 is a diagram illustrating the operation of a test terminal.

FIG. 3 is a front view showing another example of the test terminal.

FIG. 4 is a front view showing still another example of the test terminal.

FIG. 5 is an exploded perspective view of a terminal block.

FIG. 6 is a side view of a terminal block.

FIG. 7 is a cross-sectional view of a terminal block.

FIG. 8 is an exploded perspective view showing another example of the terminal block.

FIG. 9 is an exploded perspective view showing still another example of the terminal block.

FIG. 10 is a bottom view showing the arrangement of contact portions in the terminal block.

FIG. 11 is a bottom view showing another arrangement of the contact portion in the terminal block.

FIG. 12 is a diagram illustrating the operation of a terminal block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Test terminal 2 ... Upper part 3 ... Lower part 4 ... Contact part 5 ... Intermediate part 6 ... Connection part 7, 10 ... Through-hole 9 ... Insulating plate 11, 11a ... Holder 12 ... Opening 13 ... Rod

Claims (4)

[Claims] 1. An upper portion having a connection portion connected to a conductive line, a lower portion having a contact portion contacting a terminal portion, and an intermediate portion capable of maintaining elasticity in a vertical direction between the upper portion and the lower portion. A test terminal, which is integrally formed of a thin metal plate. 2. The test terminal according to claim 1, wherein the shape of the intermediate portion is substantially S-shaped. 3. The test terminal according to claim 1, wherein a through hole is formed in at least the upper part. 4. A plurality of thin metal sheets are overlapped and fastened by interposing an insulating plate having high electrical insulation therebetween.
4. The test terminal according to claim 1, wherein a block having sharp ends corresponding to the number of terminals of the electric / electronic device is formed.