JPH0430547Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a terminal inspection device for printed wiring boards, and more particularly to an improvement of a terminal inspection device that conducts wiring tests for direct type external terminals (hereinafter referred to as terminals).

[Conventional technology]

Conventionally, electrical contact is made to terminals 4 of a printed wiring board (hereinafter referred to as wiring board) 1 as shown in FIG.
The device shown in the example of FIG. The lower ends of the probes 6, which are arranged to protrude on the grid intersections and protrude from the lower surface side of the probe array plate 5, are connected to a wiring tester (not shown) via connection wiring 9a and a connector (not shown). On the other hand, the pitch of the terminal probes 8 on the terminal probe array board 7 is
The terminal probes 8 are arranged and fixed in alignment with the positions of the terminals 4 when the wiring board 1 is positioned on the probes 6 using a positioning jig (not shown).

The probe array plate 5 and the terminal probe array plate 7 are fixed to a wiring tester (not shown) while maintaining a fixed positional relationship with each other, and the terminal probe array plate 7 is replaceable. Further, the terminal probe 8 is connected to a wiring tester (not shown) via a terminal connection wiring 9b and a relay connector (not shown). In this state, to perform a wiring test on the wiring board 1, use a wiring board positioning jig (not shown).
Position the wiring board 1 on the probe array plate 5 and the terminal probe array plate 7 with the side with the terminals 4 (the top surface in FIG. 2) facing down, and apply pressure using a pressurizing mechanism (not shown).
Accordingly, the terminal 4 of the wiring board 1 and the terminal probe 8 are brought into contact with each other, and the land 2 and the probe 6 are brought into contact with each other.

[Problem that the invention attempts to solve]

The conventional wiring board terminal inspection apparatus described above has the following drawbacks.

(a) The terminal probes 8 are all connected to the connection wiring by wrapping, which takes time and effort to manufacture.

(b) Connection wiring and connectors are always attached to the terminal probe array plate 7, making transportation and storage difficult.

(c) Since the connection wiring coming out from the terminal probe 8 is connected to the wiring tester via a connector, it is necessary to attach and detach the connector every time the terminal probe array plate 7 is replaced, which is time-consuming. In addition to this, there were other problems such as a decrease in connection reliability due to wear and tear of the connector.

[Means for solving problems]

According to the present invention, the first through-hole conductive holes are arranged in a straight line at regular intervals, and the first through-holes are connected to the conductive holes through the circuit pattern and are arranged in line with the terminal pitch of the wiring board to be inspected. A laminated body in which a circuit board having two through-hole conductive holes, a probe array plate having probes penetrated and planted at the same pitch as the second through-hole conductive holes of the circuit board are joined vertically, and an insulating plate and a probe array plate. A thick plate-like elastic body is provided to protrude into a concave hole provided on the upper surface of the blank edge of the probe array formed by penetrating the probes, and penetrates the probes that are in contact with the lower surface of the first through-hole conductive hole of the circuit board. There is obtained a terminal inspection device for a wiring board, characterized in that the laminated body is placed upright and fitted into the hole.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS. 1a to 1c.

Similar to the conventional probe array shown in FIG. 3a, the probes 11 are arranged on the probe array plate 10 at a constant pitch on grid intersection points, and connection wiring is connected from the lower end of the probes 11 protruding from the lower surface of the array plate 10. (not shown) is connected to a wiring tester (not shown). The connection probes 12 are installed by penetrating the bottom of a hole formed in a step shape in the upper surface of a margin provided on one side of the probe array plate 10 in a straight line at a constant pitch.
It is connected to a wiring tester (not shown) from the lower end of the unit via connection wiring (not shown). Furthermore, the bottom of this hole has a screw hole 13 for fixing the stacked body of the terminal probe array plate 20 and the circuit board 30, and a stopper 14 for stopping the fitting of the stacked body into the hole at a certain position. .

FIG. 1b is an exploded perspective view illustrating the terminal probe array plate 20 and circuit board 30 that fit into the holes shown in FIG. 1a. The terminal probe array plate 20 is constructed by planting the terminal probes 21 through an insulator shaped to fit into the holes of the probe array plate 10, and its projected shape from the top surface is similar to that of the circuit board 30. is the same as Probe 2 for this terminal
The planting position of 1 is the same pitch as the arrangement pitch of the terminals 4 of the wiring board 1 to be inspected (see Fig. 2), and
The positions of the terminals 4 of the wiring board 1 are made to coincide with the positions of the terminals 4 of the wiring board 1 when the wiring board 1 is positioned on the probe 11 using a positioning jig (not shown).

A circuit board 3 disposed under the probe array board 20
0, a through hole land A33, a connection pattern 34, and a through hole land B35 are formed, and the through hole land A33 has the same pitch as the arrangement pitch of the connection probes 12 planted on the probe array plate 10, and has the same pitch as the connection probe 12 installed on the probe array plate 10. It is placed at the same position as 12. The through hole land B35 has the same pitch as the arrangement pitch of the terminal probes 21, and when the terminal probe arrangement board 20 and the circuit board 30 are joined, the terminal probes 2
It is placed in the same position as 1. In this case, the through hole 31 is also arranged at the same position as the fixing hole 22.

FIG. 1c is a cross-sectional view illustrating the bonding state of the terminal probe array plate 20 and the circuit board 30.
By fitting the terminal probe array plate 20
At the same time, the protrusion 21a at the lower end of the terminal probe 21 is fitted into the through-hole land B35. Note that the protrusion 21a and the through-hole land B35 are normally provided so that they can be electrically connected by soldering or the like.

Next, the case where actual wiring inspection is performed will be explained.

The terminal probe array plate 20 and the circuit board 30 are fitted into the holes on the probe array plate 10 while being joined to each other, and the fixing screws 23 are screwed into the fixing screw holes 13 through the fixing holes 22 to fix them. At this time, the connection probe 12 and the through-hole land A33 on the circuit board 30 are brought into contact with an appropriate force by the thick elastic stopper 14 protruding from the approximate center of the hole in the terminal probe array plate 20 and the circuit board 30. Stop at a position. In this state, the terminal probe 21 is electrically connected to a wiring tester (not shown) through a conductive path via the through-hole land B35, the connection pattern 34, the through-hole land A33, and the connection probe 12. Note that the subsequent wiring inspection implementation procedure is the same as in the conventional example.

[Effect of idea]

As described above, if the terminal inspection device of the present invention is used, the following effects can be obtained.

(a) The structure of the probe array board is simplified and wrapping wiring is not required, so the manufacturing time of the probe array board is shortened.

(b) Since connection wiring and connectors to the probe array board are not required, transportation and storage become easier.

(c) Since the terminal probe and the wiring tester can be connected with a simple operation without using a connector, preparation time is short and highly reliable wiring tests can be performed.

[Brief explanation of drawings]

FIG. 1a is a partially exploded perspective view of a terminal inspection device for a printed wiring board according to the present invention, and FIGS. 1b and 1c are an exploded perspective view and a side sectional view showing the main parts of FIG. 1a. Second
The figure is a perspective view of a printed wiring board to be inspected, and FIGS. 3a and 3b are a perspective view and a side sectional view of the main part of a conventional terminal inspection apparatus for a printed wiring board. Symbols in the diagram: 1...Printed wiring board, 2...Through hole land, 3...Circuit pattern, 4...Terminal,
5, 10... Probe array plate, 6, 11... Probe, 7, 20... Terminal probe array plate, 8,
21...Terminal probe, 9a, 9b...Connection wiring, 12...Connection probe, 13...Fixing screw hole, 14...Stopper, 22...Fixing hole, 23...
...Fixing screw, 24...Pilot pin, 30...
Circuit board, 31...Through hole, 32...Pilot hole, 33...Through hole land A, 34...Connection pattern, 35...Through hole land B.

Claims (1)

[Scope of utility model registration request] first through-hole conductive holes arranged linearly at regular intervals; and second through-holes connected to the conductive holes via a circuit pattern and arranged to match the pitch spacing of the terminals of the printed wiring board to be inspected. A laminate in which a circuit board having two through-hole conductive holes and a probe array plate having probes inserted therethrough and planted at the same array pitch as the second through-hole conductive holes of the circuit board are vertically joined; A thick plate-shaped elastic body is provided to protrude into a concave hole provided on the upper surface of the margin edge of the probe array plate in which the probes are inserted through the plate, and comes into contact with the lower surface of the first through-hole conduction hole of the circuit board. 1. A terminal inspection device for a printed wiring board, characterized in that a probe is installed through the hole, and the laminate is fitted into the hole.