JPH06268386A - Wiring board holding device for function expansion - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the mounting range of electronic components on a wiring board for function expansion and to enable quick and reliable attachment / detachment. [Structure] A long fixed guide 11 arranged to face the main body 1,
11 and each long fixed guide 11 has an inlet side stopper portion 12
And short movable guides 21 and 21 that are movably supported between the end-side stopper portions 13 and that engage with the leading end portion of the wiring board 5 inserted from the inlet portion of the long fixed guides 11 and guide the movement. , The short movable guides 21 are locked by the relative displacement between the short movable guides 21 and the wiring board 5 after the positions of the short movable guides 21 are regulated by the terminal stoppers 13 when the wiring board 5 is inserted. 5. When pulling out, each short movable guide 21 is provided with setting means 31 for releasing the lock by utilizing the relative displacement between the short side movable guide 21 and the inlet side stopper portion 12 after their positions are regulated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for holding a function-expansion wiring board capable of adding electronic parts.

[0002]

2. Description of the Related Art For example, in the body of an electrophotographic printer,
In some cases, a wiring board for function expansion capable of adding RAM and the like is attached. Usually, such a wiring board is detachably attached to the main body by using a holding device.

The holding device is roughly classified into a fixed-type holding device for holding the function-expansion wiring board on the bottom surface of the main body by using a mounting screw or the like, and a slide-type holding device for holding the function-expansion wiring board in a removable manner by using a slide rail. There is a holding device.

[0004]

By the way, in the above-mentioned holding device, the fixed device has a disadvantage that it takes time and effort to attach and detach the mounting screw or the like by reversing the main body of the electrophotographic printer at the time of attachment and detachment. Have. On the other hand, the slide-type holding device requires a portion (for example, a strip-shaped portion having a width dimension of 5 to 10 mm on both sides of the board) that is in sliding contact with the slide rail on the function extension wiring board, and the mounting range of electronic components is reduced accordingly. Will be done.

In view of the above circumstances, an object of the present invention is to provide a function expansion wiring board holding device capable of increasing the electronic component mounting range of the function expansion wiring board and quickly and surely attaching / detaching. is there.

[0006]

A holding device for a function-expansion wiring board according to the present invention is a holding device for a function-expansion wiring board that detachably holds a function-expansion wiring board in which electronic parts can be added to a main body. In the main body, a long fixed guide which is arranged opposite to the predetermined width of the function expansion wiring board at an interval exceeding the width dimension of the function expansion wiring board, and a distance corresponding to the length dimension of the function expansion wiring board in the long fixed guide. The inlet-side stopper portion and the terminal-side stopper portion, which are provided apart from each other, and the elongated fixed guide, which are supported so as to be movable between the inlet-side stopper portion and the terminal-side stopper portion, are inserted from the inlet portion of the elongated fixed guide. A short movable guide that engages with the distal end of the function expanding wiring board to guide the movement, and the short movable guide after the position of the short movable guide is regulated by the terminal stopper when inserting the function expanding wiring board. Use the relative displacement between the dynamic guide and the function expansion wiring board to lock them together, and use the relative displacement between the two after the position of the short movable guide is restricted by the inlet stopper when pulling out the function expansion wiring board. And setting means for unlocking.

[0007]

In the present invention having the above-described structure, when the wiring board for function expansion is inserted from the entrance side of the long fixed guide, the front end of the wiring board engages with the short movable guide, and the short movable guide allows the long fixed guide to be inserted. Will be guided along. Then, when the short-length movable guide comes into contact with the terminating side stopper portion with the insertion of the function-expansion wiring board and movement is blocked,
The setting means locks both the short movable guide and the function expanding wiring board by utilizing relative displacement between the guide and the function expanding wiring board after locking the short movable guide. As a result, the function-expansion wiring board can be securely attached to the predetermined position of the main body without trouble.

When the function-expansion wiring board is pulled to pull it from the main body, the board is moved and guided by the short movable guide along the long fixed guide. When the short movable guide comes into contact with the entrance stopper portion and is prevented from moving as the function expanding wiring board is pulled out, the setting means uses the relative displacement between the guide and the function expanding wiring board to engage the two. Release the stopped state. This allows the function-expansion wiring board to be quickly and reliably removed from the main body.

Here, by making the length of the short movable guide as short as possible within a range in which a predetermined portion (for example, a tip end portion) of the function-expansion wiring board can be reliably held, the short movable guide is engaged with the short movable guide. The part to do can be reduced.

As a result, it is possible to increase the mounting range of electronic components on the function-expansion wiring board, and to attach and detach them quickly and reliably.

[0011]

Embodiments of the present invention will be described with reference to the drawings.
This function expansion wiring board holding device is applied to an electrophotographic printer, and as shown in FIGS. 1 to 3, long fixed guides 11, 11, short movable guides 21, 21 and setting means 31. It is configured so that the mounting range of the electronic component 9 on the function-expansion wiring board 5 can be increased, and the electronic component 9 can be quickly and reliably attached and detached.

Here, as shown in FIG. 1, the long fixed guides 11 and 11 have a width of a function expanding wiring board 5 (hereinafter, simply referred to as a wiring board 5) in a predetermined portion of the main body 1 of the electrophotographic printer. They are arranged so as to face each other with an interval exceeding the dimension (vertical length in the figure) (only one of the long fixed guides 11 is shown in FIG. 1). Each long fixed guide 11 is provided with an inlet-side stopper portion 12 and a terminal-side stopper portion 13 that are separated by a distance corresponding to the length dimension of the wiring board 5. Each of the stopper portions 12 and 13 is formed integrally with the long fixed guides 11 and 11.

The short movable guides 21 and 21 are supported by the long fixed guides 11 and 11 so as to be movable between the inlet-side stopper portion 12 and the terminal-side stopper portion 13, and the long fixed guides 11 and 11. The wiring board 5 is inserted from the inlet side of the wiring board 11 so as to be movable and guided by the board 5.

In this embodiment, the short movable guides 21 and 21 are used.
Is formed to have a minimum length within a range in which the tip portion of the wiring board 5 can be reliably held. Further, on the back surface side of each short movable guide 21, a slide protrusion 23 slidably fitted in the slit portion 14 of the long fixed guide 11 is inserted.
Is formed, and a guide groove portion 22 that slidably fits the side portion of the wiring board 5 is provided on the front surface side.

Further, in the setting means 31, the short movable guides 21 and 21 are inserted into the stopper portion 1 on the terminal side when the wiring board 5 is inserted.
The respective short movable guides 2 after their positions are regulated by 3, 13
1 and the wiring board 5 are locked by utilizing the relative displacement between the wiring board 5 and the wiring board 5, and both of them (5, 21) after the short movable guides 21, 21 are positionally regulated by the inlet side stopper portions 12, 12 when the wiring board 5 is pulled out. ) Is a means for unlocking by utilizing the relative displacement.

In the present embodiment, the setting means 31 includes a bush 32 which is provided in the recess 22a of the guide groove 22 of each short movable guide 21 so as to project and retract by the elastic force of the spring 33, and a tip portion of the wiring board 5. It is composed of a concave portion 35 provided on each side portion.

In FIG. 1, reference numeral 2 is a connecting portion on the main body 1 side, and 6 is a connecting portion provided at the tip of the wiring board 5 corresponding to the connecting portion 2.

Next, the operation of this embodiment will be described.
When the wiring board 5 is inserted from the inlet side of the long fixed guides 11, 11, the tip end of the wiring board 5 engages with the short movable guides 21 and 21 and the long movable guides 21 cause the wiring board 5 to be extended. The guide is moved along the scale fixing guides 11, 11. When the short movable guides 21 come into contact with the corresponding terminal stoppers 13 as shown in FIG. 4 and the movement of the short movable guides 21 is blocked as the wiring board 5 is inserted, the wiring board 5 and the guides 21 are moved relative to each other. Setting means 3 due to displacement
Each bush 32 of No. 1 is fitted into each concave portion 35 of the substrate 5 and the elastic force of each spring 33 causes the concave portion 35.
And the substrate 5 is locked (see FIGS. 5 and 6).
As a result, the wiring board 5 is held at a predetermined position of the main body 1 and the connecting portion 6 is connected to the connecting portion 2.

Further, when the short movable guides 21 come into contact with the corresponding inlet side stopper portions 12 as shown in FIG. 7 as the wiring board 5 is pulled out and their movement is blocked, the wiring board 5 and the guides 21 are subsequently separated. With the relative displacement, each bush 32 of the setting means 31 is exposed from the inside of each recess 35 to the outside of the wiring board 5. As a result, the locking relationship between the mounting board 5 and the short movable guide 21 is released, and the board 5 is removed from the main body 1. As a result, the connection between the connecting portions 2 and 6 is released.

Here, since the lengths of the short movable guides 21 and 21 are set to the minimum in a range in which the tip of the wiring board 5 can be reliably held, the short movable guides 21 of the wiring board 5 are
The side portion (strip-shaped portion) engaging with 21 can be significantly reduced as compared with the conventional slide type holding device.

However, according to this embodiment, the long fixed guides 11 and 11 arranged to face the main body 1 are separated from each other by a distance corresponding to the length of the wiring board 5. The inlet-side stopper portion 12 and the terminal-side stopper portion 13 provided as well as each of the elongated fixed guides 11 are movably supported between the inlet-side stopper portion 12 and the terminal-side stopper portion 13. Positions of the short movable guides 21 and 21 for engaging and guiding the wiring board 5 inserted from the entrance of the wiring board 11 with the front end thereof and the respective short movable guides 21 at the end side stopper portion 13 when the wiring board 5 is inserted. After each short movable guide 21 and the wiring board 5
And the short movable guides 21 are engaged with each other when the wiring board 5 is pulled out by using the relative displacement between
Since the setting means 31 for unlocking by utilizing the relative displacement of the both after the position is regulated is provided, the mounting range of the electronic component 9 on the wiring board 5 can be increased and can be swiftly and reliably. Can be attached and detached.

Further, since the length of the short movable guide 21 is minimized within the range in which the tip portion of the wiring board 5 can be reliably held, the electronic component mounting range of the wiring board 5 can be further increased.

In the embodiment described above, the bushes 32 elastically supported by the springs 33 on the short movable guide 21 side of the setting means 31 and the recesses 3 on the wiring board 5 side.
However, the bush 32, the recess 35, and the like may be formed in any manner.

Although the inlet-side stopper portion 12 and the terminal-side stopper portion 13 are integrally formed with each long fixed guide 11, they may be formed separately. Further, although the present invention is applied to the electrophotographic printer, it may be applied to other electronic devices.

[0025]

According to the present invention, a long fixed guide disposed opposite to a main body and a long fixed guide supported by the long fixed guide so as to be movable between an inlet side stopper portion and a terminal side stopper portion. A short movable guide that engages with the leading end of the wiring board inserted from the guide inlet and guides the movement, and the short movable guide after the position of the short movable guide is restricted by the terminal stopper when inserting the wiring board. Setting means for locking both by utilizing relative displacement with the wiring board and for unlocking by utilizing relative displacement of both after the position of the short movable guide is regulated by the inlet side stopper portion when the wiring board is pulled out; Since the configuration is provided, it is possible to increase the mounting range of the electronic component on the wiring board and to attach / detach quickly and reliably.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an essential part of an embodiment of the present invention.

FIG. 2 is a sectional view for explaining a partial configuration of setting means provided on the short movable guide.

FIG. 3 is likewise an exploded perspective view for explaining the external configurations of the short movable guide and the function expanding wiring board.

FIG. 4 is a view showing a state in which the short movable guide comes into contact with the terminating side stopper portion as the function-expansion wiring board is inserted.

FIG. 5 is a diagram showing a manner in which the short circuit movable guide and the short movable guide are displaced relative to each other after the short movable guide is locked by the terminal stopper portion.

FIG. 6 is a view showing how the bush of the setting means is fitted into the recess of the function-expansion wiring board and locks the board.

FIG. 7 is a diagram similarly showing how the function-expansion wiring board is pulled out.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 5 Wiring board for function expansion 9 Electronic components 11 Long fixed guide 12 Entrance side stopper section 13 End side stopper section 21 Short movable guide 31 Setting means

Claims (1)

[Claims] 1. A function-expansion wiring board holding device for detachably holding a function-expansion wiring board capable of adding electronic components to a main body, wherein a predetermined portion of the main body exceeds a width dimension of the function-expansion wiring board. The long fixed guides that are arranged to face each other with an interval, the entrance-side stopper portion and the end-side stopper portion that are provided on the long fixed guide at a distance corresponding to the length dimension of the wiring board for function expansion, A long guide that is supported by a fixed guide so as to be movable between the entrance-side stopper part and the end-side stopper part. Use the relative displacement between the movable guide and the function-expansion wiring board after the position of the short-length movable guide is regulated by the terminal stopper when inserting the function-expansion wiring board. Setting means for stopping and unlocking using the relative displacement of the short movable guide after the position of the short movable guide is regulated by the inlet stopper when pulling out the wiring board for function expansion Holding device for expansion wiring board.