JPH10294155A - Board connection structure - Google Patents

Abstract

(57) [Problem] To provide a board connection structure that can easily repair and adjust a lower board in a two-story circuit board arrangement. SOLUTION: As shown in (a), a first substrate 1 and a second substrate 1 are provided.
Are connected by a first board-to-board connector 6, and the third board 3 is connected to a second board-to-board connector 5 provided on the second board 2. The same type is used for the first board-to-board connector 6 and the second board-to-board connector 5, and as shown in FIG.
The third substrate 3 can be directly connected to the first substrate 1 to facilitate repair and adjustment of the first substrate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board connection structure for a device which realizes a specific function by combining a plurality of circuit boards.

[0002]

2. Description of the Related Art In order to accommodate a large number of circuits in electric equipment, it is often practiced to arrange substrates on which circuits are mounted one above the other. When such a structure is adopted, the substrate on the lower side is not directly visible, which is inconvenient for adjustment or repair.

FIG. 3 shows one of such examples. In FIG. 3, 1 is a first substrate, 2 is a second substrate set on the first substrate, and 3 is a third substrate connected to the second substrate 2. Reference numeral 4 denotes a movable board-to-board connector that electrically connects the first board and the second board, and is capable of opening and closing the second board 2 in the connected state. This is a second board-to-board connector that connects the second and third boards 3. The second substrate 2 is used simply for relaying,
No substantial circuit is mounted on this substrate. Due to this structure, in the case of adjustment or repair, the third as shown in FIG.
The first substrate can be inspected by flipping the substrate 3 upward.

At the time of repairs and inspections, it is often the case that the circuit is set to an operation different from that in normal use, for example, an operation check mode is set so as to perform a test. A switch and a switching jumper line are provided, and the operation is performed to shift to a predetermined mode.

[0005]

However, when a board-to-board connector having a special shape as described above is used, the arrangement and shape of the components on the board of the first board 1 are restricted due to the movable structure. However, there is a problem that it is not always optimal in every case, such as an increase in the price for using a special board-to-board connector.

Further, in the case of a board having the above-described operation check mode, for example, it is necessary to provide a switch and a switching jumper wire on the board, and there is a problem that a troublesome switching is required at the time of repair and repair.

[0007]

In order to solve the above-mentioned problems, a board connection structure of the present invention connects a first board and a second board by a board-to-board connector and provides the board on a second board. A third structure that can be connected to either the board-to-board connector or the board-to-board connector on the first board.
Has a structure to connect the board with a board-to-board connector,
The direction or position of the third substrate changes between when the first substrate, the second substrate, and the third substrate are connected, and when the first substrate and the third substrate are connected, or when the third substrate is connected. The function of the substrate is changed.

According to the present invention, it is possible to realize a device which is convenient for maintenance and inspection without using a plurality of substrates and without using connectors or lead wires having a special structure.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a first board and a second board are connected by a board-to-board connector, and a board-to-board connector provided on the second board is provided. A third board having a structure connectable to any of the board-to-board connectors on the first board has a structure for connecting the board with the board-to-board connector, and the first board, the second board, and the third board are connected to each other. The direction or position of the third substrate changes or the function of the third substrate changes depending on whether the connection is made or the first substrate and the third substrate are connected.

Next, the invention described in claim 2 of the present invention is:
A first board-to-board connector provided on the first board, a second board-to-board connector coupled to the first board-to-board connector to hold the boards at right angles, and the first board-to-board connector A second board having a third board-to-board connector having the same connection structure and holding the boards at right angles, and a fourth board connecting with the third board-to-board connector and holding the boards at right angles. Having a third board provided with the inter-board connector of
There is an effect that the direction of the third substrate changes by 90 degrees between the case where the first substrate, the second substrate and the third substrate are combined, and the case where the first substrate and the third substrate are combined.

Next, the invention according to claim 3 of the present invention is as follows:
In addition to the contents of claim 2, the function of the third substrate depends on whether the first substrate is connected to the second substrate and the third substrate, or when the first substrate is connected to the third substrate. The direction of the third substrate is determined when the first substrate, the second substrate, and the third substrate are coupled, and when the first substrate and the third substrate are coupled. Has the effect of changing the function of the third substrate.

(Embodiment 1) An embodiment of the present invention described in claims 1 and 2 of the present invention will be described below with reference to FIG.

FIG. 1 shows an embodiment according to claims 1 and 2 of the present invention. In FIG. 1A, reference numeral 6 denotes a first board-to-board connector for connecting the first board 1 and the second board 2 at right angles. In FIG. 1, FIG.
3 are assigned the same reference numerals as in FIG. 3A, and description thereof is omitted.

When performing repair or adjustment, the third board 3 is directly connected to the first board-to-board connector 6 on the first board 1 as shown in FIG. 1B. Since the second substrate 2 is merely used as a relay, FIG.
The circuit operates in the same configuration as that of FIG. Moreover, in this case, the first substrate 1 can be seen from above, which is very useful for repair and adjustment.

(Embodiment 2) Next, an embodiment of the present invention described in claims 1 and 3 of the present invention will be described with reference to FIG.

FIG. 2 shows a third embodiment of the present invention. This content is further added to the structure of the substrate according to the second aspect of the present invention. In FIG. 2A, the same components as those in FIG. 3A are assigned the same reference numerals as those in FIG. Reference numeral 22 denotes a first board-to-board connector attached to the first board 1, and b and c shown in the figure among the pins of the connector are connected. Reference numeral 23 denotes a first board-to-board connector 22 attached to the second board 2.
A second board-to-board connector connected to the
A and b shown in the figure are connected by a third board-to-board connector attached to the board 2 of FIG. A fourth board-to-board connector 25 is attached to the third board 3 and connected to the second board-to-board connector 24. Reference numeral 26 denotes a detection pin for detecting the connection state of the board by using three of the pins of the fourth board-to-board connector 25.

FIG. 2A shows a first substrate 1 and a second substrate 2.
And a state where the third substrate 3 is connected to the third substrate 3. This state corresponds to a state where the device is normally used. In this case, the detection pin 26 is electrically connected between a and b shown in the figure.
FIG. 2B shows a state in which only the first substrate 1 and the third substrate 3 are connected. This state corresponds to a state where the device is being repaired or adjusted. In this case, the detection pin 26 is electrically connected between b and c shown in FIG.

Therefore, if the conduction state of the detection pin 26 is detected by a circuit mounted on the third substrate 3, it is possible to detect whether the device is currently in a normal use state or a repair / adjustment state. This makes it possible to switch the circuit operation such as automatically setting a reference signal internally, for example, and to improve the efficiency in repair and adjustment.

[0019]

As described above, according to the present invention, there is an advantageous effect that it is easy to adjust or repair a lower substrate in an apparatus in which substrates on which circuits are mounted are arranged one above the other. Is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram of a substrate connection structure according to a first embodiment of the present invention.

FIG. 2 is a diagram of a substrate connection structure according to a second embodiment of the present invention.

FIG. 3 is a diagram of a conventional board connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st board 2 2nd board 3 3rd board 4 Movable board to board connector 5 2nd board to board connector 6 1st board to board connector 22 1st board to board connector 23 2nd Board to Board Connector 24 Third Board to Board Connector 25 Fourth Board to Board Connector 26 Pins for Detection

Claims (3)

[Claims] 1. A first board and a second board are connected by a board-to-board connector, and the board is connected to either a board-to-board connector provided on the second board or a board-to-board connector on the first board. It has a structure in which a third board having a structure that can be connected is connected by a board-to-board connector, and the first board, the second board, and the third board are connected, and the first board and the third board are connected. A board connection structure in which the direction or position of the third board changes or the function of the third board changes when connected. 2. A first board-to-board connector provided on a first board, a second board-to-board connector coupled to the first board-to-board connector to hold the boards at right angles, and the first board-to-board connector. A second board provided with a third board-to-board connector having the same connection structure as that of the board-to-board connector and holding the boards at a right angle; A third board provided with a fourth inter-board connector to be held by the third board. 3. The method according to claim 2, wherein the first substrate, the second substrate, and the third substrate are connected, and the first substrate and the third substrate are connected. A substrate connection structure in which the function of the substrate is switched.