JPH0379098A - Electronic circuit module device - Google Patents

Abstract

PURPOSE:To reduce developing cost and schedule of a module and to decrease malfunctions of a jig by providing an electrode group for electrically connecting when the module is mounted on an external device and an electrode group used only at the time of electric test and measurement. CONSTITUTION:An electrode group 3 is electrically connected by engaging it with the electrode group of a socket connector by inserting a main module to a socket connector 19 mounted on a mother board 18 of a master electronic device. An electrode group 4 is used only for electric test and measurement at the time of completing a module, and the groups 3, 4 are connected by one more wiring 8 at a suitable interval. If the module is judged as a satisfactory product through electric test and measurement, a board 1 is so cut between the groups 3 and 4 that the group 3 is brought to the end of the board. Thus, both groups 3 and 4 are provided on the board 1 to test and measure the module without requiring a dedicated measuring jig, thereby reducing the new module developing cost and schedule.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a module device in which an electronic circuit is constructed on a printed circuit board, and particularly to electrodes and wiring provided on the printed circuit board.

[Conventional technology]

Conventionally, this type of electronic circuit module is usually connected to a board (usually called a motherboard) containing the main circuits in the device via a connector, in order to play a part in the circuits of electronic devices such as computers and digital exchanges. Ta. In cases where it is more advantageous for the equipment and the user to easily replace module parts in the event of failure or improvement, it is better to replace the module than the cost increase and slight decrease in electrical performance and reliability due to the presence of a connector. Recruitment is selected. By the way, the connector used to connect the module and the motherboard varies in shape and number of pins (bin number).

There are many types available in the industry, depending on the structure of the pitch and joint. Electronic device designers decide on connectors after considering cost, space, and reliability for the entire device. Normally, within the same device, the types are unified as much as possible and minimized. On the other hand, the production of modules is often outsourced by device manufacturers to other manufacturers.

In many cases, such module manufacturers receive orders for multiple types of modules from multiple device manufacturers and manufacture them. As a result, modules with various connector specifications are ordered from module manufacturers. For module manufacturers, one of the most difficult processes in manufacturing and delivering products is testing the electrical operation of finished module products.

When conducting tests, the module manufacturer must use the connector that the equipment manufacturer plans to use for the measurement jig that connects the electrical operation test equipment and the module, or manufacture a special pin-contact type jig. become. Generally, the module has a card edge type electrode as shown in Figure 3,
This socket connector is used for the type of module that is plugged into the socket connector on the device side, but a two-piece connector like the one shown in Figure 4 is soldered to the card edge electrode of the module and fitted into the two-piece connector on the device side. For modules that connect, the module side connector is expensive, so test it before soldering. In this case, the pitch,
A special contact-type jig with pins arranged to match the number of poles will be manufactured. Furthermore, in the case of FIG. 3, if a socket connector for use in the device is not available, a jig similar to the case of FIG. 4 must be manufactured. In any case, module manufacturers are required to create a dedicated measurement jig for each new module development, and designing and manufacturing this dedicated jig is one of the biggest bottlenecks in new module development, both in terms of cost and construction time. was.

[Problem to be solved by the invention]

The conventional electronic circuit module device described above uses electrodes arranged for electrical connection with external devices, and is used for electrical inspection during module manufacture, so depending on the number of poles, pitch, and size. Measurement jigs and other items must be prepared for each case. This causes problems in the development of new modules, such as increased costs, longer development periods, and a greater risk of defects occurring in the completed jig. The present invention solves this problem.

[Means to solve the problem]

The electronic circuit module device according to the present invention includes a printed wiring board, a group of electrodes (A) provided on the board for electrical connection with the outside, and a group (A) of electrodes provided on the board separately from the A, and an electrode group (A) provided on the board from A to the outer side of the board. The electrode group B is arranged at a certain interval and is used only for electrical testing and measurement, and the wiring provided on the board to connect the electrode groups A and B.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1(a) is a perspective view of one embodiment of the present invention.

A plurality of integrated circuits and various electronic components 2 such as resistors and capacitors are mounted on the printed wiring board l.

When this module is inserted into a socket connector 19 attached to the motherboard 18 of the parent electronic device, the electrode group 3 is electrically connected by engaging with the electrode group of the socket connector. FIG. 1(c) is a diagram showing how this module is actually mounted on the motherboard 18. What should be noted here is Figure 1 (a
) When this module is completed, 3 is arranged relatively inside 1, whereas when it is mounted in Fig. 1(C), 3 is arranged at the edge of the board, which is different from Fig. 1(a). This is the point. Electrode group 4 is used exclusively for electrical test measurements when the module is completed. In order to mate with the electrode group of the measurement jig,
The pitch is different from 3, and there are also some unconnected electrodes that do not have electrodes corresponding to 3. When the number of electrodes on the measurement jig side is greater than the number of poles of the module (3), the large number of electrodes on the jig side will directly contact 1 to prevent them from being deformed and damaged. FIG. 1(b) is a diagram showing how a completed module product is measured. The general-purpose measuring jig 5 has 60 measuring pins 5-1 lined up on one side, and 4 of 1 is placed on the measuring pins 5-1 and fixed with a fastener 5-2. A 6° core cable 6 is taken out from 5 and connected to a test and measurement device 7. At this point, 3 is still arranged in the inner part of 1, and is visible on 1 that protrudes from 5. 3 and 4 are connected by wiring 8 on 1 at an appropriate interval. If this module is determined to be good after electrical testing and measurement as shown in FIG. 1(b), 1 is cut between 3 and 4 so that 3 is at the edge of the board. By providing both 3 and 4 on 1 as described above, the module can be subjected to test measurements without preparing a dedicated measuring jig.

FIG. 2(a) is a perspective view of Embodiment 2 of the present invention. A plurality of integrated circuits as well as various electronic components 10 such as resistors and capacitors are mounted on the printed wiring board 9. The electrode group 11 arranged at the end of the board is for making an electrical connection with the outside, and the terminals of a two-piece connector 12 having a number of poles corresponding to the number of poles 11 are soldered. This module is entirely covered by a plastic case 13.

FIG. 2(c) shows how this module is installed as an optional module of the electronic terminal device 2 from the external slot 14. A system-side two-piece connector 15 that mates with 12 is attached to the back of 14. Figure 2 (
b) shows how this module is electrically tested and measured. 12 is not soldered and 9 is not cut at the time of electrical test measurements. 11 is also arranged inside the substrate, and a group of electrodes 16 dedicated to measurement is arranged at the end of 9. 13 is also not installed at this point. The actual measurement procedure is not much different from Example 1.

Insert 9 into the general-purpose measuring jig 5 so that it engages with 5-1 and 16. In this example, there are 16 peaks (number of bins)
is the same number as 5-1 (60 poles).

The characteristic of this example is that on 9, 11 is 30 on one side.
There are 30 poles on the back side, and the 30 poles on the back side are taken out to the front side using the through-hole wiring 17, so 1 and 6 correspond to 5-1 with 60 poles on one side only on the front side. It is. Therefore, 16 is 1/2 of 11 in terms of the pitch of the electrodes. As described above, this Example 2
can also be measured using a general-purpose jig without the need for a dedicated measurement jig.

〔Effect of the invention〕

As explained above, the present invention provides an electrode group A that is responsible for electrical connection when a module is attached to an external device, an electrode group B that is used only during electrical testing and measurement, and wiring that connects A and B. By providing a space to cut and separate the part behind the test measurement, multiple types of modules with different numbers of poles and pitches can be connected to the same number of poles and pitches on B, so that one type of measurement method can always be used. It is now possible to perform test measurements using a test tool, eliminating the need to design and manufacture a dedicated measurement jig every time a new module is developed, which was previously required.As a result, module development costs and construction times are reduced, and the incidence of defects in the measurement jig is reduced. This has the excellent effect of reducing the amount of

Sub parts, 3, 11... Electrode group for connecting with external equipment, 4, 16... Electrode group dedicated to electrical testing and measurement, 5... General purpose measurement fixture. Tools (5-1 measurement pin in the jig, 5-2 fixture in the jig), 6...60-core cable, 7...test measuring machine, 8... Wiring, 12...Module side two-piece connector, 13...Plastic case, 14...
...Module installation slot, 15...System side two-piece connector, 17...Through-hole wiring, 18...Motherboard, 19...
...System side two-piece connector, 20...
...Electronic terminal equipment.

Claims (1)

[Claims] On a printed wiring board on which an electronic circuit is constructed, a group of electrodes is arranged to obtain an electrical connection with the outside, and the wiring from the circuit part to the board is separate from the wiring from the circuit part to the board. A separate electrode group B from A to which the arranged wiring is connected is arranged, and at an appropriate place between both groups A and B, an appropriate electrode is placed between the two groups so that the area where B is arranged can be separated. 1. An electronic circuit module device characterized by providing a certain interval.