JPH08286286A - Opening angle regulating device of opening/closing device for original pressing plate - Google Patents

Abstract

PURPOSE: To provide an opening angle regulating device for an original pressing plate opening/closing device consistuted so that the opening angle of the supporting member of an original pressing plate in an original pressing plate opening/closing device is adjusted on front surface of a copying machine or a printing machine to which the opening/closing device is attached without moving the copying machine or the printing machine. CONSTITUTION: A locking member 21 locking the supporting member 14 at a specified opening angle is attached between an attaching member 12 and the supporting member, and constituted to be freely attached/detached on the front of a device body 10 in a state where the original pressing plate 20 is attached to the device body. In such a case, the locking member 21 is formed so that its cross section may be nearly U-shaped by successively providing a pair of locking pieces having a hook part 22a and a guide slot 22b through a successively providing plate 23. Then, the hook part and the guide slot are locked on the supporting member side and the attaching member side by holding the part of an elastic means, and a leaf spring for preventing the locking member 21 from falling acts on the locking member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to provide a device for controlling the opening angle of a document pressure plate opening / closing device used in, for example, a copying machine or a printing machine.

[0002]

2. Description of the Related Art The maximum opening angle of a document pressure plate used in a copying machine or a printing machine is usually regulated to 60 ° to 70 °.
Since it is desired to be able to open up to the past,
As shown in FIG. 1, a mounting plate 3 is provided at the rear of the mounting member 2 that is mounted on the side of the apparatus main body 1, and a stopper plate 4 is vertically installed from the rear through a mounting screw 5 in a long hole 3a provided in the mounting plate 3. An opening / closing angle regulation device 6 movably attached is known.

With this arrangement, when the original pressing plate 7 is opened during normal use, the supporting member 8 for supporting the original pressing plate 7 rotates about the hinge pin 8a as a fulcrum, as shown by the imaginary line, and the rear portion thereof serves as a stopper. It contacts the upper end of the plate 4 and regulates the opening angle of the original pressure plate 7 to 60 ° to 70 °. However, when inspecting and repairing the inside through the contact glass 9, for example, the apparatus main body 1 is on the front side. It is possible to adjust so as to open the document pressure plate up to 90 ° or more, which is equal to or more than the regulation opening angle, by displacing and turning to the rear part, loosening the mounting screw 5 with a screwdriver and lowering the stopper plate 4. It was a thing. Incidentally, 8b is an elastic means provided elastically between the mounting member 2 and the supporting member 8 for stably holding the original pressure plate 7 at an intermediate opening angle and preventing a sudden drop.

[0004]

SUMMARY OF THE INVENTION Copiers, printers, etc.
Most of them are installed with their rear parts in contact with a wall or a stand.
In that case, if the original pressure plate is to be opened up to 90 ° during inspection and repair, the conventional one loosens or tightens the mounting screw 5 holding the stopper plate 4 to the rear of the copying machine or printing machine. Since it is necessary, a copier, a printing machine and the like must be moved for that purpose, and there is a problem that it becomes complicated.

An object of the present invention is to adjust the opening angle of a supporting member of a document pressure plate in an opening / closing device in front of a copying machine or a printing machine having the opening / closing device attached thereto without moving the printing machine or the like. It is an object of the present invention to provide an opening angle regulating device for a document pressure plate opening / closing device configured as described above.

[0006]

In order to achieve the above-mentioned object, the present invention comprises an attachment member attached to the apparatus main body side and a document pressure plate rotatably connected to the attachment member via a hinge pin. In a document pressure plate opening / closing device comprising a support member and an elastic means elastically provided between the support member and the mounting member, a locking member for locking the support member at a predetermined opening angle is used as the mounting member. And a supporting member, and the locking member is configured to be detachable at a front portion of the apparatus main body when the original pressure plate is attached to the apparatus main body.

In this case, according to the present invention, the locking member has a U-shaped cross section in which a pair of locking pieces each having a hook portion and a guide long hole are connected by a connecting plate, and the elastic means portion is provided. The hook portion and the guide elongated hole may be held by holding the hook portion and the guide elongated hole on the supporting member side and the mounting member side, and a leaf spring may be installed to prevent the locking member from falling off.

[0008]

According to the first aspect of the invention, the opening angle of the supporting member for supporting the original pressure plate is regulated to a predetermined opening angle by the locking member installed between the supporting member and the mounting member.
This locking member can be attached and detached at the front part of the main body of the copying machine or printing machine to which the opening / closing device is attached, and by removing it, the allowable range of the opening angle of the support member is further increased. be able to.

According to the second aspect of the present invention, the leaf spring can prevent the locking member from coming off, and the elongated guide hole can restrict the opening / closing operation of the supporting member within the predetermined opening angle range at normal times. is there.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention, and in FIGS. 2 to 3, an apparatus main body 10 such as a copying machine or a printing machine is shown.
An attachment member 12 is attached to the upper end of the rear portion via an attachment button 11, and a side plate 12a of the attachment member 12 has a support member 14 pivotably attached at one end thereof to a side plate 12a via a hinge pin 13 so as to be openable and closable. Between the position different from the mounting position of the hinge pin 13 on the side plate 12a of the mounting member 12 and the free end side of the support member 14, the tubular portion 15a and the shaft portion 16a are provided.
Spring receiving member 1 in which the two are fitted to each other in a freely contractible manner
Reference numerals 5 and 16 are swingably attached by support pins 17 and 18. A compression coil spring 19 is elastically provided between the spring receiving members 15 and 16 while being wound around the cylindrical portion 15a, and an original pressing plate 20 attached to the supporting member 14 is always provided via the supporting member 14. It is urged in the opening direction.

Reference numeral 21 is a locking member, and this locking member 21
Is a pair of locking pieces 22, 22 having hook portions 22a, 22a and guide slots 22b, 22b with cutouts 22c, 22c at opposite positions, which are connected by a connecting plate 23 so as to have a substantially U-shaped cross section. The compression coil spring 19 is held by the spring receiving members 15 and 16, and the hook portions 22a and 22a and the elongated guide holes 22b and
22b is engaged with both ends of the support pins 17 and 18. Reference numeral 24 is a pressing member such as a leaf spring that presses the locking member 21 so as not to come off. The pressing member 24 is fixed to the support member 14 with a fixing pin 25, and the hook portion 22a of the locking piece 22 of the locking member 21 is provided. Holds down the side.

Next, a method of attaching and detaching the locking member 21 will be described. As shown in FIG. 4, when the original plate 20 is opened, the rear end portion 14a of the supporting member 14 is positioned at the upper end of the side plate 12a of the mounting member 12. Open until it abuts, and its maximum opening angle is 90 °. In this state, first, the locking member 2
The end portions of the guide elongated holes 22b, 22b of No. 1 are attached to the mounting member 1
The support pin 18 on the second side is engaged through the notches 22c and 22c. Next, as shown in FIG. 5, with the document pressure plate 20 closed to about 50 °, the locking member 21 is attached to the guide elongated hole 2.
The hooks 22a and 22a are hooked on the support pins 17 on the support member 14 side as shown in FIG. 6 by reversing counterclockwise with the engaging positions of 2b and 22b as fulcrums, and the original plate 20 is slightly opened. Then, as shown in FIG. 7, the opening angle of the original pressure plate 20 is regulated by locking the support pin 17 to the hook portions 22 a, 22 a, and the locking member 21 is fixed by the pressing member 24. . In the embodiment, the maximum allowable opening angle of the original pressure plate 20 during normal use is 60 °. When the original plate pressing plate 20 is closed from this opening angle, the support pins 18 on the mounting member 12 side are guided by the elongated guide holes 22b, 22b.
By sliding the inside, the closing operation is allowed, and in the completely closed state, the support pin 18 returns to the starting ends of the guide elongated holes 22b, 22b of the locking member 21 as shown in FIG. In this way, the original pressure plate 20 is attached to the attachment member 12 regardless of the presence of the locking member 21 that regulates the opening angle of the support member 14 attached between the attachment member 12 and the support member 14.
The support pin 18 on the side is the guide long hole 22b of the locking member 21,
By sliding inside 22b, the opening / closing operation is allowed within a certain opening / closing angle range.

If it is necessary at the time of maintenance and it is desired to set the opening angle of the original pressure plate 20 to 60 ° or more, the original pressure plate 20 should be left in the front portion of the main body 10 of the apparatus.
When it is opened to about 0 ° and a finger is put on the connecting plate 23 of the locking member 21, and this is pulled to the front side, the pressing member 24 releases the pressing member, and the locking member 21 is removed from the mounting member 12 and the supporting member 14. It can be removed from the support pins 17 and 18. Then, since the locking member 21 does not lock the supporting member 14, the original pressure plate 20 can be opened up to 90 ° as shown in FIG.

[0014]

Since the present invention is constructed as described above, the following effects can be obtained.

According to the first aspect of the present invention, the original pressure plate is placed at 60 ° to 70 ° without moving the main body of the apparatus while the front side of the main body of the apparatus is maintained during maintenance of the copying machine or the printing machine.
Since it can be opened wider than the normal opening angle of
The effect that maintenance work becomes easy can be produced.

According to the second aspect, it is possible to obtain an effect that the locking member can be easily attached and detached and the mounting state of the locking member is stabilized.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view for explaining a conventional technique.

FIG. 2 is a partial cross-sectional side view for explaining an opening angle regulating device of the document pressure plate opening / closing device according to the present invention.

FIG. 3 is a perspective view of a locking member.

4 to 7 are explanatory views for explaining a procedure for attaching and detaching a locking member.

[Explanation of symbols]

 10 Device Main Body 12 Mounting Member 13 Hinge Pin 14 Support Member 17 Support Pin 18 Support Pin 19 Compression Coil Spring 20 Original Crimping Plate 21 Locking Member 22 Locking Piece 22a Hook 22b Guide Long Hole 23 Continuous Plate 24 Holding Member

Claims (2)

[Claims] 1. An attachment member attached to the apparatus main body side, a support member of a document pressure plate rotatably connected to the attachment member via a hinge pin, and an elastic member between the support member and the attachment member. In a document pressure plate opening / closing device including elastic means provided, a locking member that locks the support member at a predetermined opening angle is attached between the mounting member and the support member, and the locking member is An opening angle regulating device for a document pressure plate opening / closing device, characterized in that the document pressure plate is detachably attached to a front portion of the device body when the document pressure plate is attached to the device body. 2. The locking member has a substantially U-shaped cross section in which a pair of locking pieces having a hook portion and a guide long hole are connected by a connecting plate, and the elastic member is held. The hook portion and the guide elongated hole are locked to the support member side and the mounting member side, and a leaf spring for preventing the locking member from falling is applied to the locking member. Item 1. An opening angle regulating device for a document pressure plate opening / closing device according to Item 1.