JPH02154166A - Adapter for printed wiring board inspection machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an off-grid adapter used in a general-purpose printed wiring board inspection machine, and particularly to an off-grid adapter and pin board for simultaneous inspection of both sides of a printed wiring board.

Conventional technology inspection points are on grids such as 2.54 mm grids, etc.Princess 1 - A general-purpose printed wiring board as a device that can inspect electrical continuity and disconnection in the wiring state of the wiring board by using a simple jig. The inspection machine uses an off-grid adapter to inspect printed wiring boards that have inspection points outside the grid.

Printed wiring boards (hereinafter referred to as "boards") that can be inspected by applying a pin or probe to one side of the printed wiring board to be tested (hereinafter referred to as "boards") are mini-off grids, which are available in four sizes to match the size of the board. You can select and test Sodoadapter.

Problems to be Solved by the Invention In the case of so-called double-sided simultaneous inspection, in which both sides of the board to be inspected are inspected simultaneously by applying pins or 10-beams to both sides, a standard-sized off-grid adapter (
(contacts to the bottom side of the board to be tested), and a standard size pin board (a board with contact probes implanted to energize the test points l~ of the board to be tested) is placed on the top side of the board to be tested. had to be used.

Therefore, even if the manufacturing cost is low, it is necessary to use a standard size off-grid adapter and pin hoard as described above, resulting in a relatively high inspection cost.

The present invention has been made in view of the above-mentioned conventional situation,
Therefore, an object of the present invention is to provide an off-grid adapter of an appropriate size corresponding to the board and a corresponding pin board on the upper side in the case of a small board in simultaneous double-sided inspection, thereby making it easy and accurate. The object of the present invention is to provide a new jig having a structure that allows inspection at low cost.

Means for Solving the Problems In order to achieve the above object, an off-grid adapter according to the present invention includes a plurality of off-grid adapters and pin boards each having dimensions corresponding to the dimensions of a plurality of printed wiring boards to be inspected. and is configured to perform double-sided inspection of the printed wiring board using an off-grid/sodo adapter and pin board that are compatible with the printed wiring board depending on the size of the printed wiring board to be inspected. .

Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

Fig. 1 is a perspective view showing an embodiment of an off-grid adapter to which the present invention is applied, Fig. 2 is a perspective view showing an embodiment of an upper pin board to which the present invention is applied, and Fig. 3 is an off-grid adapter. Adapter V) is a sectional view of main parts.

In the present invention, the off-grid adapter shown in FIG. 1 and the upper pin board shown in FIG. For example, if there are five different dimensions of the board to be inspected, five different types of off-grid adapters and upper pin boards should be created and prepared according to the dimensions of the board to be inspected. Inspections are sometimes performed using a jig that corresponds to the board to be inspected.

Next, each part of the off-grid adapter and upper pin hoard used in the present invention will be specifically explained.

(1), off-grid adapter (Fig. 1, Fig. 3) 10
- Bugard plate 1 has a fixture (2, 54 mm
This is an insulating board that is mounted on a pin board (see FIG. 3) in which contacts 1-10 are implanted in a grid pattern, and is moved up and down by a spring 32. A hole is formed at the same position as the contact probe pin 33 of the fixture 31, and serves as a first guard for the contact probe pin 33. Furthermore, a toggle clamp (or similar function) 2 is attached to this plate 1, by means of which the off-grid adapter can be easily fixed.

1 to glue clamp 2 are mesh boards 4, which will be described later.
The relay adapter 14 is fixed to the simple (11),
It is housed in the toggle clamp stand 3.

The toggle clamp stand 3 is a stand on which the toggle clamp 2 is attached, and is attached to the probe guide plate 1-1. It has a two-piece structure, and the toggle clamp 2 rotates, making it easy to attach and detach the off-grid adapter. It has become.

The mesh board 4 is an insulating board with holes drilled at the same pitches as the contact probe holes 33 of the fixture 31, and is fixed to the dedicated board 5 with U/D spacers 6 and pillars 7.

The dedicated board 5 is an insulating board with holes drilled at the same positions as the inspection points of the board 34 to be inspected. The adapter pin 13 is inserted into the hole. Further, the dedicated board 5 has guide pins 10 for setting the board to be inspected 34 with high positional accuracy.
is implanted.

The U/D spacer 6 is a spacer for lowering the dedicated board 5 by a slight dimension. When setting the off-grid adapter on the probe guard plate 1, as shown in FIG. 4, the dedicated board 5 is slightly raised and the adapter pin 13 is retracted from below the mesh board 4. After setting, lower it to the normal height. This is because if the adapter pin 13 protrudes from below the mesh board 4, it may be difficult to set it.

The support 7 is a support for fixing the dedicated board 5 and the mesh board 4, and also serves to prevent the dedicated board 5 from deflecting.

The substrate thickness adjustment handle 8 is a handle equipped with a mechanism that adjusts the pressure stroke to an optimum pressure stroke because the pressure stroke changes depending on the thickness of the substrate 34 to be inspected. This handle 8
are provided to make it easier to lift the probe guard plate 1. As shown in FIG. 5, various thickness adjustment plates 8a are prepared and adjusted by replacing them depending on the thickness of the substrate 34 to be inspected.

The handle is intended to simplify handling of the off-grid adapter.

The guide pin 10 is a guide pin for setting the substrate to be inspected 34 on the dedicated holder 5 with good positional accuracy, and has a built-in spring and a tip that moves up and down.

The pilot pin 11 is a positioning pin when setting the off-grid adapter and the relay adapter 14 on the probe guard plate 1. .

The abutting frame 12 is adjusted using a board thickness adjustment jig (same structure as the board thickness adjustment handle) so that the degree of depression of the entire off-grid adapter does not change depending on the thickness of the board 34 to be inspected. At the same time as being able to
This is provided to prevent the pressure table from falling below this level.

The adapter pin 13 is a flexible metal rod having a length of about 100 mm and used to electrically connect the contact probe pin 33 on the fissure 31 and the inspection point on the substrate 34 to be inspected.

The relay adapter 14 is used to electrically connect the upper pin board and the contact probe pin 33 of fixture 1 (which uses an area not used by the off-grid adapter) to be described later during a one-sided time test. It is structurally the same as an off-grid adapter.

(2) Upper pin board (Fig. 2) The pin board base 21 is a board for storing the upper pin board in the inspection machine, and the pin board, relay block, etc. are stored in this pin board base. to be determined.

The pin board 22 is to which contact probes, pin board reference pins, reinforcing rods, etc. are attached. The contact probe 24 is implanted at the same position as the test point on the board to be tested. Further, the size of this pin board 22 can also be changed depending on the size of the board to be inspected.

The probe guide plate 23 serves to prevent the contact probes from falling or bending, to ensure that the contact probes contact the test points of the board to be tested, and to push down the board to be tested horizontally, so that the contact probes are not pushed down due to variations in the number of contact probes. This serves to prevent the board to be inspected from tilting. The hole position is made at the same position as the inspection point of the substrate to be inspected.

The contact probe 24 is a spring-loaded contact 10-b for electrically contacting the inspection point of the board to be inspected, and is connected to the relay block with a wire.

The relay block 25 is a block that relays to electrically connect the off-grid adapter and the pin board,
The number of blocks can be increased according to the number of pins. In addition, the wiring on the pinhold side is connected with a connector,
Relay blocks can be reused on other upper pinboards.

Furthermore, as shown in FIG. 6, since the pins used in this relay block 25 use spring-loaded contact probes, the contact will not be affected even if the thickness of the board to be tested changes. There is no connection with the lower off-grid adapter.

The relay block attachment frame 26 is a frame for attaching a relay block, and is attached to a pinboard base. The relay blocks 25 are positioned using relay block reference pins so that a plurality of relay blocks 25 can be attached.

The relay block reference pin 27 is a pin embedded in the frame 26 for mounting the relay block, and the relay block reference pin 27
Used for positioning when installing.

The pinboard reference pin 28 is a reference pin for positioning the pinboard base 21 and the pinboard 22 when they are assembled.

The reinforcing rod 29 is for preventing the pin board 22 from being bent.

Effects of the Invention As described above, according to the present invention, when inspecting both sides of the substrate, it is possible to use an off-grid adapter and an upper pin hoard that match the size of the substrate to be inspected. Therefore, the effect that double-sided inspection can be carried out easily and accurately at low cost can be obtained.

Further, according to the present invention, the following effects can be obtained.

Regardless of single-sided inspection or double-sided simultaneous inspection, since off-grid adapters of various sizes can be selected for large and small substrates to be inspected, the manufacturing cost required for each substrate to be inspected can be reduced.

Since the thickness of the mesh board can be reduced, the manufacturing cost of the mesh board is low.

The off-grid adapter can be easily installed and removed because it uses a toggle clamp (or similar mechanical part) and rotates out of the way to remove and install the off-grid adapter. .

Since the adapter part for relaying with the upper pin board during double-sided inspection can be separated from the board part to be tested, the manufacturing cost required for each board to be tested can be reduced.

Since the adapter part for relaying with the upper pin board can be separated, when both sides are tested simultaneously, it is only necessary to assemble the off-grid adapter part of the board to be tested. Therefore, assembly is completed in a short time.

Like conventional off-grid adapters, the off-grid adapter has a tlA structure that moves up and down as a whole when pressed, so it is less affected by the thickness tolerance of each board and makes contact with the contact probe of the fixture with the optimum load. It has become.

Since the upper pin board can be selected from various sizes depending on the size of the board to be tested, the manufacturing cost l~ required for each board to be tested can be reduced.

Since the relay section (relay block) with the off-grid adapter can be divided, the manufacturing cost required for each board to be inspected can be reduced.

Since it is a probe guide plate type, the contact probe does not fall or bend, and it reliably contacts the inspection points 1 to 1 of the substrate to be inspected.

Since the relay block uses a spring contact blow, there is no effect on contact due to changes in the substrate to be inspected.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of an off-grid adapter to which the present invention is applied, Fig. 2 is a perspective view showing an embodiment of an upper pin board to which the invention is applied, and Fig. 3 is an off-grid adapter. 4 to 6, which are cross-sectional views of the main parts of the adapter, are explanatory diagrams of the present invention. ■...Probe guard play 1-12...l ~ Guruklang, 3...7 toggle clangs, 4...Mesh board, 5...Special board, 6...11/D spacer, 7... Pillar , 8... Board thickness adjustment handle 9... Handle, 10... Guide pin, 11... Pilot pin, 12... Butting frame, 13... Adapter pin, 14...
・Relay adapter, 21 ・Pin board base, 2
2...Pin board, 23...Probe guide plate, 24
...Contact probe, 25...Relay flock,
26... Relay block mounting frame, 27... Relay block reference pin, 28... Pin board reference pin, 29
Reinforcement rod, 31...Fixture, 32...Spring, 33 Contact 1~Probe pin Patent applicant Agent of Kyoei Sangyo Co., Ltd.

Claims (2)

[Claims] (1) Prepare multiple off-grid adapters and pin boards with dimensions corresponding to the dimensions of multiple printed wiring boards to be inspected, and select the printed wiring board according to the size of the printed wiring board to be inspected. 1. An adapter for a printed wiring board inspection machine, characterized in that an off-grid adapter and a pin board compatible with the above are used to inspect both sides of the printed wiring board. (2) The adapter for the printed wiring board inspection machine is configured so that the entire body moves up and down when pressed, so that the contact of each pin such as the probe pin and adapter pin is not affected by the board thickness tolerance of each board. A claim further characterized in that (
The adapter for the printed wiring board inspection machine described in 1).