JPH08288675A - Extension board for debug working - Google Patents

Abstract

PURPOSE: To provide an extension board for debug working wherein reduction of wiring length and facility of debug working can be realized by holding a printed board to be debugged perpendicularly to other printed board. CONSTITUTION: The title extension board is provided with a circuit pattern 5y, an extension board connector 7y for attaching a printed board 1a to be debugged on an extension board 1y, and an extension board connector 6y for attaching the extension board 1y on a mother board 1m. The extension board 1y is constituted by arranging the insertion direction of the extension board connector 7y perpendicularly to the insertion direction of the extension board connector 6y.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic equipment device for carrying out high-speed communication processing by incorporating a plurality of printed boards on which a large number of electronic parts such as IC chips are mounted, in an arbitrary printed board in the electronic equipment device. During electrical debugging work,
The present invention relates to an extension board used for changing the holding mode of the printed board while maintaining the electrical connection.

[0002]

2. Description of the Related Art Conventionally, various methods have been adopted as a method for holding a plurality of printed circuit boards in an electronic device, but generally, the structure shown in FIG. 3 is adopted. In FIG. 3, reference numerals 1a, 1b, 1c and 1m denote a printed circuit board and a mother board on which a circuit pattern is formed on both or one side. The printed circuit board 1a has a circuit pattern 5a on the back side and the printed circuit board 1b has a front side. The circuit pattern 5b is formed, and the circuit pattern 5m is formed on the mother board 1m for electrically connecting the adjacent printed circuit boards 1a and 1b to each other. 2a, 2
Reference numeral b is a plurality of electronic components mounted on each of the printed boards 1a and 1b, and is connected to the terminal portions 4a and 4b of the circuit patterns 5a and 5b through a plurality of input or output terminals 3a and 3b. It is fixed with an adhesive such as solder. By this adhesive fixing, the electronic component 2a becomes the printed circuit board 1
The electronic component a and the electronic component 2b are electrically connected to and mounted on the printed board 1b.

Reference numerals 6a and 6b are the printed circuit boards 1a and 1b.
Printed circuit board 1 to attach to the motherboard 1m
It is a connector provided in a, 1b, and 7m-a, 7m
Reference numeral -b is a connector provided on the mother board 1m for attaching the printed circuit boards 1a and 1b to the mother board. And this motherboard connector 7m-a,
7m-b, the connector 6a of the printed circuit board 1a, 1b,
By inserting and fixing 6b, the printed circuit board 1a,
1b is mechanically and electrically connected to the motherboard 1m.

5m is the mother board 1m as described above
Is a circuit pattern formed on the mother board 1m to secure electrical connection between the connectors 7m-a and 7m-b provided on the motherboard 1m. As a result, the adjacent printed circuit boards 1
Between the electronic components 2a and 2b respectively mounted on a and 1b, a signal is usually output from the output terminal 3a of the electronic component 2a, passes through the circuit pattern 5a from the terminal portion 4a, and passes through the connector 6a and the connector 7m. -A through the circuit pattern 5m, and the connector 7m-b and the connector 6b through the circuit pattern 5b and the terminal portion 4b of the printed circuit board 1b.
To reach the electronic component 2b through the input terminal 3b. As a result, the electronic components 2a and 2b are electrically connected to each other.

In the electronic device having the above structure, the contact terminals 10 of the measuring device (not shown) are connected to the printed circuit board 1a as shown in the side view of FIG. In order to make contact with the terminal portion 4a of 1a, the adjacent printed circuit board 1b becomes an obstacle as is clear from FIG. 4, and debugging work becomes difficult or impossible.

Therefore, conventionally, an extension board is used to perform a debugging operation. Next, based on FIG. 5, a method of holding a printed circuit board, which is conventionally performed during a debugging operation, that is, when an extension board is used, will be described. In FIG.
1x is an extension board on which a circuit pattern is formed, and 7x
Is a connector provided on the extension board 1x for attaching the printed circuit board 1a to be debugged to the extension board 1x, and 6x is a connector provided on the extension board 1x for attaching the extension board 1x to the mother board 1m. . The length between the extension board connectors 6x and 7x is set to be equal to or longer than the entire length of the printed board 1a, and the extension board connector 7 is inserted in the insertion direction of the extension board connector 6x.
The insertion direction of x is parallel, that is, horizontal.
By inserting and fixing the connector 6a of the printed board 1a into the extension board connector 7x and inserting and fixing the extension board connector 6x into the motherboard connector 7m-a, the printed board 1a is inserted into the motherboard 1m via the extension board 1x.
Mechanically and electrically. 5x is a circuit pattern formed on the extension board 1x, and the extension board connector 6x
And 7x electrical connection is secured.

By using the extension board 1x thus constructed, the electronic components 2a and 2b mounted on the printed boards 1a and 1b are connected to each other via the extension board 1x, and at the same time, the print is performed. The board 1a is held at the holding position changed by the extension board 1x, specifically, at a position where its projection surface does not overlap the printed board 1b. Therefore, in order to debug the printed circuit board 1a, the contact terminals 10 of the measuring device (not shown)
As shown in the side view of FIG. 6, when contacting the terminal portion 4a provided on the back surface side of the printed circuit board 1a, as is apparent from FIG. Therefore, the debugging work becomes possible.

[0008]

However, the conventional technique using the above extension substrate has the following problems. That is, in various electronic equipment devices that house a plurality of printed circuit boards, there is a demand for higher processing speeds, and in the case of signal lines whose processing speeds have been increased, it becomes The adverse effect of the radio wave noise may extremely increase. Therefore, in order to increase the processing speed and reduce the adverse effects of radio noise from the outside, there is a marked need to shorten the length of the wiring connecting between the printed circuit boards as much as possible.

However, as in the conventional case, when a structure for changing the holding position of the printed circuit board by using an extension circuit board having a circuit pattern which is the same as or longer than the total length of the printed circuit board during debugging, Since the signal that crosses between printed circuit boards always goes through the extension circuit board that has the same or longer circuit pattern as the total length of the printed circuit board,
Even if the signal line was shortened, a limit naturally occurred, which was not technically satisfactory. Although the extension board changes the holding position of the printed circuit board, the printed circuit board is held in the horizontal direction, so it is not easy to bring the contact terminals of the measuring instrument into contact with the terminals on the back side of the printed circuit board. It was

The present invention has been made in order to solve the above-mentioned problems, and a separate printed circuit board is used without using a conventional extension board that extremely lengthens the entire wiring during debugging. It enables connections across multiple lines, which shortens the wiring length between printed circuit boards during debugging work, does not impair the speeding up of processing speed even during debugging work, and also has the adverse effect of external radio noise. It is an object of the present invention to provide an extension board for debugging work capable of reducing the noise.

[0011]

In order to solve the above problems, the present invention relates to an electronic equipment device in which a plurality of printed boards on which a plurality of electronic components are mounted are connected and held in parallel to a mother board. An extension board for debugging work used to change the holding mode of the printed circuit board while maintaining the electrical connection so that the contact terminal of the measuring instrument can be brought into contact with the terminal portion on the back surface side of the printed circuit board for debugging work. In, the insertion direction of the connector provided on the extension board for connecting the extension board to the motherboard and the insertion direction of the connector provided on the extension board for connecting the printed board to be debugged to the extension board are perpendicular to each other. Thus, each connector is disposed on the extension board so as to be configured.

By disposing the connector for connecting the mother board and the connector for connecting the printed circuit board to be debugged, which are provided on the extension board, at right angles to each other, the printed circuit board to be debugged can be replaced by another. The printed circuit board can be connected and held in a direction perpendicular to the printed circuit board, and thus the length of the extension board can be shortened. As a result, the wiring between the connectors of the extension board is greatly shortened, and the wiring length between the electronic components during debugging is greatly shortened as compared with the case where the conventional extension board is used. Therefore, by significantly reducing the wiring length during debugging, it is possible to significantly reduce the adverse effects of external radio noise without impairing the speeding up of signal processing between printed circuit boards. Also, since the printed circuit board to be debugged is placed at a right angle to the other printed circuit boards, it is possible to efficiently carry out the debugging work in which the contact terminals of the measuring instrument are brought into contact with the terminals on the back side of the printed circuit board. Become.

[0013]

EXAMPLES Next, examples will be described. FIG. 1 is a perspective view showing a mode of use of an embodiment of an extension board for debugging work according to the present invention. In FIG. 1, 1a, 1b, 1
c is a printed circuit board, 1m is a mother board, 2a and 2b are plural electronic parts, 3a and 3b are plural input or output terminals, 4a and 4b are terminal portions, 5a, 5b and 5m.
Is a circuit pattern, 6a and 6b are printed circuit board connectors,
7m-a and 7m-b are motherboard connectors, and these constituent members are the same as those in the conventional example shown in FIG. 5, and the same reference numerals as those of the constituent members shown in FIG. Is omitted.

In FIG. 1, 1y is an extension board having a circuit pattern formed thereon, 7y is a connector provided on the extension board 1y for attaching the printed board 1a to be debugged to the extension board 1y, and 6y. Is a connector provided on the extension board 1y for attaching the extension board 1y to the mother board 1m. The distance between the extension board connectors 6y and 7y is as short as possible within a range where there is no inconvenience for mounting the extension board connectors 6y and 7y, that is, the extension provided on the extension board 1x used in the conventional example shown in FIG. Compared with the board connectors 6x and 7x, it is set to be significantly shorter,
The insertion direction of the extension board connector 7y is perpendicular to the insertion direction of the extension board connector 6y. The printed board 1 to be debugged is attached to the extension board connector 7y.
Insert and fix the connector 6a of “a”, and extend the board connector 6y.
Is fixed to the mother board connector 7m-a, the printed board 1a is mechanically and electrically connected to the mother board 1m through the extension board 1y. Reference numeral 5y is a circuit pattern formed on the extension board 1y to ensure electrical connection between the extension board connectors 7y and 6y.

By connecting the printed circuit board 1a to be debugged to the mother board 1m through the extension circuit board 1y in this way, signal transmission between the electronic components 2a and 2b mounted on the printed circuit boards 1a and 1b is performed. This is done as follows. That is, normally, a signal is output from the output terminal 3a of the electronic component 2a, passes through the circuit pattern 5a from the terminal portion 4a, passes through the circuit pattern 5y through the connector 6a and the connector 7y, and then the connector 6y and the connector 7m-. printed circuit board 1b through circuit pattern 5m through a, and connector 7m-b and connector 6b.
Through the circuit pattern 5b and the terminal portion 4b and reaches the electronic component 2b through the input terminal 3b. in this way,
The electronic components 2a and 2b mounted on the printed circuit boards 1a and 1b are connected to each other via an extension board 1y, and the printed circuit board 1a to be debugged has a holding position changed by the extension board 1y. Specifically, it is held at a position perpendicular to the printed board 1b. By using such an extension board 1y, the wiring between the electronic components 2a and 2b is greatly shortened between the extension board connectors 7y and 6y provided on the extension board 1y. Compared with the case where the extension substrate 1x is used, the length can be greatly shortened. Furthermore, since the insertion direction of the extension board connector 7y is perpendicular to the insertion direction of the extension board connector 6y, as shown in FIG.
In order to debug the printed circuit board 1a, when the contact terminal 10 of the measuring device (not shown) is brought into contact with the terminal portion 4a provided on the back surface side of the printed circuit board 1a, the printed circuit board 1a is held vertically. In this way, debugging work can be done efficiently.

[0016]

As described above on the basis of the embodiments,
According to the present invention, the wiring length between the electronic components at the time of debugging can significantly reduce the wiring between the extension board connectors provided on the extension board, and therefore, compared with the case where the conventional extension board is used, It can be greatly shortened. Therefore, the adverse effect of radio noise from the outside can be greatly reduced without impairing the speeding up of signal processing between printed circuit boards due to the drastic reduction of the wiring length during debugging work. Further, since the printed circuit board to be debugged is held vertically to the other printed circuit boards, it is possible to efficiently perform the debugging work in which the contact terminals of the measuring device are brought into contact with the terminal portion provided on the back surface side of the printed circuit board. Become.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of an embodiment of an extension board for debugging work according to the present invention.

FIG. 2 is a side view showing a mode during debugging work of the embodiment shown in FIG.

FIG. 3 is a perspective view showing a connection holding mode of a plurality of conventional printed circuit boards.

FIG. 4 is a side view showing a mode during debugging work in the printed circuit board connection / holding device shown in FIG. 3;

FIG. 5 is a perspective view showing a usage state of a conventional extension board.

FIG. 6 is a side view showing an aspect during debugging work of the conventional example shown in FIG.

[Explanation of symbols]

 1a Printed board 1b Printed board 1c Printed board 1m Motherboard 1x Extension board 1y Extension board 2a Electronic component 2b Electronic component 3a Electronic component terminal 3b Electronic component terminal 4a Circuit pattern terminal 4b Circuit pattern terminal 5a Circuit pattern 5b Circuit Pattern 5x Circuit pattern 5y Circuit pattern 6a Printed circuit board connector 6b Printed circuit board connector 6x Extension board connector 6y Extension board connector 7m-a Motherboard connector 7m-b Motherboard connector 7x Extension board connector 10y Contact terminal of measuring instrument

Claims (1)

[Claims] 1. A contact terminal of a measuring instrument is provided on a terminal portion on a back surface side of a printed circuit board for debugging in an electronic device apparatus in which a plurality of printed circuit boards mounted with a plurality of electronic components are connected and held in parallel to a mother board. A connector provided on the extension board for connecting the extension board to a mother board, which is used to change the holding mode of the printed board while maintaining the electrical connection so that the extension board can be connected to the motherboard. Each connector is arranged on the extension board so that the insertion direction of the connector and the insertion direction of the connector provided on the extension board for connecting the printed circuit board to be debugged to the extension board are perpendicular to each other. An extension board for debugging work.