JPS6144785B2 - - Google Patents

Description

[Detailed Description of the Invention] In a copying machine in which a document feed table is placed on the document set surface so that it can be opened and closed, foreign objects such as pencils and erasers may be placed on the document feed table without being aware of the situation. When the document supply table is opened, there is a risk that the foreign object may enter the path or fingers may become caught.

Therefore, the present invention has been devised to prevent the above-mentioned danger.

First, details of the embodiment will be described with reference to the drawings.

Reference numeral 1 denotes a copying machine main body, on the upper surface of which is formed an original setting surface 2 (glass), and on this original setting surface 2 is a document feeding table A consisting of a paper feed section machine frame 3 and a transport section machine frame 4. will be provided.

To be more specific, the paper feed unit frame 3 has a document insertion slot 5.
Several feeding rollers 7 provided on a shaft 6 at required intervals are faced to the insertion opening 5, and a guide 8 is placed on the circumferential side of the feeding rollers 7.

The paper feed unit frame 3 is fixed to the main body.
On the other hand, the upper surface of the transport unit frame 4 forms a document insertion surface 9, and one end of the frame 4 is rotatably connected to the paper feed unit frame 3 by a shaft 10. Several pulleys 11 are coaxially attached, and an endless belt 13 constituting a conveyance means is hung between the pulleys 11 and a pulley 12 on the opposite side.

Therefore, the gist of the present invention is to provide an insertion port cover 14 in the insertion port 5 as described below.

That is, one end of a blind plate-shaped first cover member 15 is rotatably connected to the upper edge of the insertion opening 5 by a shaft 16, and a spring 17 is connected to the first cover member 15.
The cover member 15 is urged counterclockwise in FIG. Both sides of the base of a second cover member 20 having a planar comb tooth shape are rotatably connected to the lever shaft 19, and one side of the second cover member 20 is provided with a stopper projecting from both side plates of the paper feed unit frame 3. This second cover member 20 is brought into sliding contact with the dual-purpose guide pin 21 .
Engagement pieces 22 are bent and formed on both sides of the sliding end thereof so as to face the guide pin 21.

Further, each of the arm portions 18 is provided with a driven pin 23,
Pressing portions 24 provided on both sides of the transport unit frame 4 are made to face this pin 23.

The operation will be described below.

In order to set the original, the original is pushed out by hand using the insertion surface 9 as a guide, and one end of the original is inserted through the insertion slot 5.
This is the general form of this type of device, in which the belt is sandwiched between the belt and the guide 8, fed into the underside of the belt 13, and positioned on the setting surface 2.

Therefore, in the state shown in FIG. 2, when the transport unit frame 4 is rotated counterclockwise around the shaft 10 in order to copy a thick original, the pressing unit 24 presses the driven pin 23, and 1 cover member 15 is attached to shaft 16
As the second cover member 20 rotates clockwise around , the second cover member 20 sequentially stands up using the guide pin 21 as a guide, and its sliding end touches the feed roller 7.
As shown in Figure 3, there will be an intervention between each row of
As the spaces between each strip are closed, the insertion port is also closed, so even if a foreign object is placed on the document insertion surface 9, it is completely prevented from entering the device, and of course, fingers are also prevented from being inserted. It is something that will be done. Further, when the transport unit frame 4 is returned to its original position, the locking piece 22 engages with the guide pin 21 as shown in FIG. 2, thereby maintaining the insertion port cover 14 in the open state.

As described above, according to the present invention, when the transport unit frame is opened, the insertion slot cover also closes the space between each strip of the feed roller facing the insertion slot, including the original insertion slot. Therefore, it is possible to completely eliminate the risk of device failure due to foreign objects entering the device or fingers getting caught due to insertion of the device.
Its features are great.

[Brief explanation of the drawing]

1 is a front view, FIG. 2 is a longitudinal sectional front view of the main parts, FIG. 3 is a top plan view, and FIG. 4 is a sectional view showing the operating state. DESCRIPTION OF SYMBOLS 1...Copying machine main body, 2...Document setting surface, 3...Paper feeding section machine frame, 4...Transporting section machine frame, 5...Insertion slot, 7...Feeding roller, 13...Transportation means, 14...Insertion slot cover.

Claims (1)

[Scope of Claims] 1. A paper feed unit frame 3 having a document insertion port 5 on the document setting surface 2 of the copying machine main body 1, and a feed roller 7 facing the insertion port 5; A conveyor such as an endless belt 13 is connected to the machine frame 3 by a hinge such that one end can be opened and closed, and receives the document sent by the feed roller 7 and feeds and sets it on the document setting surface 2 of the main body 1. Transport unit machine frame 4 equipped with means
In an apparatus having a document supply table A, the document insertion port 5 is shielded between each strip of the feed roller 7 in accordance with the opening operation of the transport unit frame 4. Insertion port cover 1 that intervenes like this
4. An automatic document feeder in a copying machine, characterized in that a document feeder is provided with a copying machine.