JPH06216550A - Printed board connection device - Google Patents

Abstract

PURPOSE:To enable preventing wrong insertion of a printed board without confirming whether the printed bard fits far a card frame. CONSTITUTION:A guide slot 3 that guides insertion of a printed board 6, wherein at the tip of insertion an engagement part 7 is formed, is provided on a card frame 2, and at the same time, the guide slot 3 is provided with a stopper 5 for engagement with the engagement part 7 as require, and by making the projection shape of the stopper 5 fit in the recessed shape of the engagement part 7, connection between the printed board 6 and a connector 4 becomes possible. Further, a limit switch 8 that functions only when the printed board 6 is inserted as deep as where it contacts to the connector 4 of the card frame 2, eventual insertion position, is provided, and the contact point of the limit switch is inserted in a power supply bus line 9's circuit to the connector 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board connecting device used for a process input / output device such as an electronic computer.

[0002]

2. Description of the Related Art FIG. 6 is a front view showing a printed circuit board connecting device used in a conventional process input / output device, and FIG. 7 is a side view of the same. In the figure, 1 is a printed circuit board that interfaces with an external device, 2 is a card frame that houses the printed circuit board 1, 3 is a guide groove for guiding and inserting the printed circuit board 1, and 4 is a connector that contacts and connects with the printed circuit board 1. is there.

Next, the operation will be described. When the printed circuit board 1 is inserted, the printed circuit board 1 is applied to the pair of upper and lower guide grooves 3 and the printed circuit board 1 is slid from the front surface of the card frame 2, and the printed circuit board 1 is contact-connected to the connector 4.

[0004]

Since the conventional printed circuit board connecting device is constructed as described above, when the printed circuit board 1 is inserted into the card frame 2, the inserted printed circuit board 1 fits into the card frame 2. There is a problem in that it is impossible to check whether or not the printed circuit board 1 is compatible with the card frame 2 at the time of insertion. Also,
If the confirmation is neglected or the printed circuit board 1 is inserted by mistake, the printed circuit board 1 will be burned.

The present invention has been made to solve the above-mentioned problems, and can prevent the erroneous insertion of the printed circuit board without checking whether the printed circuit board is suitable for the card frame. It is an object of the present invention to obtain a printed circuit board connecting device having the above structure.

[0006]

In the printed circuit board connecting device according to the present invention, the card frame is provided with a guide groove for guiding the insertion of the printed circuit board having an engaging portion formed at the insertion tip, and the guide groove is provided with the guide groove. By attaching a stopper and a limit switch that engage with the engaging part and matching the shape of this stopper with the shape of the engaging part, it is possible to connect the printed circuit board and the connector, and at the same time supply the necessary supply to the printed circuit board. The power supply circuit is formed.

[0007]

In the printed circuit board connecting device according to the present invention, the printed circuit board and the connector can be connected to each other only when the stopper shape of the card frame and the engaging portion shape of the printed circuit board are matched, and the circuit for the power supply is formed. Therefore, it is possible to prevent erroneous insertion of the printed circuit board.

[0008]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention. In FIG. 1, the same or corresponding components as those in FIGS. In the figure, reference numeral 5 denotes a stopper formed with various protruding shapes for preventing erroneous insertion of a printed circuit board, and the stopper 5 is attached to the guide groove 3 of the card frame 2. Reference numeral 6 denotes a printed circuit board in which engaging portions 7 that fit into the stopper 5 are provided on the upper and lower ends of the insertion tip, and the protrusion shape of the engaging portion 7 matches the protruding shape of the stopper 5, so that the printed circuit board 6 and the connector are connected. 4 can be connected. A limit switch 8 is provided on the stopper 5 so as to be operated by pressing by the printed circuit board 6 when the printed circuit board 6 and the connector 4 can be connected. Reference numeral 8a indicates a contact of the limit switch, and the circuit of the connector is closed only by the operation of the limit switch 8. In addition, 9 is a power source bus.

Next, the operation will be described. When the printed circuit board 6 is inserted into the card frame 2, the printed circuit board 6 is slid along the guide groove 3 attached to the card frame 2, and the connector 4 and the printed circuit board 6 are contact-connected at the final insertion position. To do so. In this case, the protruding shape of the stopper 5 formed in the guide groove 3 and the printed circuit board 6
If the concave shape of the engaging portion 7 of the
And the printed circuit board 6 can be contact-connected with each other, and at the same time, the limit switch 8 is operated by being pressed and the contact 8a is closed, so that the connector 4 is connected to the power bus 9 and the power supply circuit is closed. . On the other hand, when the stopper 5 and the engaging portion 7 have different concavo-convex shapes, as shown in FIG. 2, the tip of the printed circuit board 6 contacts the stopper 5 and further insertion of the printed circuit board 6 is not permitted. The erroneous insertion of the printed circuit board 6 is prevented.

Embodiment 2. In FIG. 3, the limit switch 8 is provided on the connector 4. The holding plate 10 is provided on the board at a position where the limit switch 8 is operated when the board 6 is correctly inserted into the card frame 2. The subsequent operation is similar to that described in the first embodiment.

Embodiment 3. FIG. 4 is a modification of the second embodiment.
The holding plate 11 is made by changing the contact position with the limit switch 8 for each voltage class. Therefore, the limit switch 8 needs to be provided on the connector 4 at a position facing the holding plate 11. FIG. 5 shows a contact state between the pressing plate 11 and the limit switch 8 when the printed circuit board is erroneously inserted. Due to the above-mentioned configuration, the holding plate 11 can operate the limit switch 8 only when the substrate 6 is correctly inserted into the card frame 2 and the voltage class is correct. The subsequent operation is similar to that described in the first embodiment.

[0012]

As described above, according to the present invention, the card frame is provided with the guide groove for guiding the insertion of the printed board having the engaging portion formed at the insertion tip, and the guide groove is provided with the engaging portion. By attaching a stopper and a limit switch that engage with each other, and by matching the shape of the stopper with the shape of the engaging portion, the printed circuit board and the connector can be connected, and the power supply circuit of the printed circuit board is closed. With this configuration, it is possible to prevent erroneous insertion of the printed circuit board, which can prevent damage to the printed circuit board and prevent adverse effects on the system.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the one shown in FIG.

FIG. 3 is a side view showing another embodiment of the present invention.

FIG. 4 is a side view showing still another embodiment of the present invention.

FIG. 5 is a diagram for explaining the operation of the one shown in FIG. 4;

FIG. 6 is a front view showing a conventional printed circuit board connecting device.

FIG. 7 is a side view of FIG.

[Explanation of symbols]

 2 Card Frame 3 Guide Groove 4 Connector 5 Stopper 6 Printed Circuit Board 7 Joint 8 Limit Switch 8a Contact 9 Power Bus 10, 10 Holding Plate

Claims (1)

[Claims] 1. A printed circuit board, a card frame provided with a guide groove for guiding the insertion of the printed circuit board, and a projecting shape formed in the guide groove. The projecting shape is formed on the printed circuit board. A stopper that inserts the printed circuit board to the final insertion position of the card frame only when the printed circuit board matches the engagement portion formed of the concave shape, and a connector that is connected to the contact portion of the printed circuit board tip at the final insertion position of the printed circuit board, A limit switch provided on the card frame or the connector and adapted to operate when the printed circuit board is inserted to the final position, and contacts of the limit switch are inserted into a power bus circuit to the connector. A printed circuit board connecting device characterized in that