JPS6041555Y2 - Document holding device for electrostatic photocopier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a document holding device for an electrostatographic copying machine, which is provided with a document holding member that presses a document placed on a transparent glass plate of a document table.

In this type of document holding device, the lower surface of the document holding member is colored white, and if this part becomes dirty with toner, clear copies cannot be expected, so it is desirable to replace the document holding member at an appropriate time. .

However, in conventional devices, the rear end of the document holding member was pivotally attached to the document table, and the front end of the document holding member was screwed to the handle. This requires complicated operations such as removing the pivot portion of the document holding member and pulling out the screws that fasten the front end of the document holding member to the handle, resulting in a lack of operability.

The present invention eliminates these conventional drawbacks.

Hereinafter, embodiments of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a document table of an electrostatographic copying machine, which has a transparent glass plate 2 on the upper surface of the central portion.

3 is a document holding member (in the illustrated example, it is a rubber plate, hereinafter referred to as a rubber plate) that presses the document placed on the transparent glass plate 2, and as shown in FIG. Board 3
A notch 4 is formed at the front end, and a plurality of locking holes 5 are bored at the rear end.

Reference numeral 6 denotes a stand for the rubber plate 3, which is pivotally supported on a pair of left and right bearings 1a and lb protruding from both sides of the rear end of the document table 1 so as to be rotatable and detachable in the direction of the rotation axis. There is.

A handle 7 is attached to the free end of the stand 6 so as to be movable within long holes 8 formed on both left and right sides of the handle 7.

The rear end of the rubber plate 3 has a pair of left and right support members 9 fixed near the bearings 1a, lb at the rear end of the document table 1.
It is removably supported by the locking hole 5....

The handle 7 is removably attached to the rubber plate 3 by clamping the edge of the notch 4 with a clamping part 10 composed of the handle 7 and a clamping piece 19 provided overlapping the handle 7. .

Although various specific structures can be adopted for each of the supporting members 9 and the holding portions 10, in this embodiment, the structures are as follows.

That is, as shown in FIG. 5, the support member 9 includes a flat plate-shaped base plate 11 fixed to the document table 1 by means such as welding or screwing, and a pair of left and right bearing members 12 protruding from the upper surface of the flat base plate 11.
. . . , a plate spring 13 having a substantially Z-shaped cross section protruding from the upper surface of the central portion between the bearing members 12 .
... has one metal rod 14 rotatably supported.

Then, the free end side of the rod 14 is connected to the bearing member 12.
It is bent approximately at right angles to the rod part supported by...
This bent portion is bent into a substantially inverted U-shape on the side to form a pin 15 with an appropriate shaft length 1, while a bearing member 12.
...The central part of the rod part located between is the pin 1.
A U-shaped bent portion 16 that is approximately perpendicular to the pins 15 is formed, and this bent portion 16 is elastically pressed by the leaf spring 13, thereby causing the pins 15 to be moved in the vertical direction. (i.e., the state inserted into the locking hole 5)
This is a disengaged state in which it is oscillated around the horizontal axis (that is, a state in which it is pulled out from the locking hole 5, as shown by imaginary lines in FIG. 5).

). The holding part 10
As shown in FIG. 6, a recess 17 is formed on the lower surface of the handle 7, and a pin 1B is installed between the inner surfaces of the recess 17 to overlap the lower surface of the handle 7 continuing from the recess 17. A spring 20 that pivotally supports the clamping piece 19 and is attached to the pin 18 biases the side of the clamping piece 19 that overlaps the handle 7 outside the recess 17 toward the handle 7, and the spring 20 pushes the handle. The gripping portion 10 is composed of the portion of the gripping piece 19 that is biased toward the gripping member 7 and the portion of the handle 7 that opposes the gripping piece 19 .

The handle 7 is attached to and removed from the rubber plate 3 by moving the handle 7 and the clamping piece 19 toward each other in the direction of the recess 17 and opening the clamping part 10.

In FIG. 1, a indicates a paper feed cassette, and b indicates a copy receiver.

According to the above configuration, as shown in FIG. 3, when the thickness of the original paper is large, the rubber plate 3 can move upward in parallel along the pins 15, so that the thickness of the original paper is absorbed. I can,
A uniform pressing condition can be obtained regardless of the thickness.

When replacing the dirty rubber plate 3, the rod 14 is rotated approximately 90 degrees around the horizontal axis, the pins 15 are removed from the locking holes 5, and the clamping portion 10 is removed. By opening it, the rubber plate 3 can be attached and detached.

FIG. 7 shows another embodiment, which is characterized in that the support member 9 is constituted by pins 15 protruding from the upper surface of the document table 1 and having a substantially inverted single-shape side surface.

According to this embodiment, the support member 9 has a very simple structure and manufacture, but since the stand 6 prevents the rubber plate 3 from falling backward beyond a certain angle, the locking holes 5... The rubber plate 3 can be pulled out from the pins 15 by preventing it from accidentally coming off from the pins 15, and by releasing the grip by the gripping part 10 of the handle 7.

The present invention has the above-mentioned configuration, and when replacing a dirty document holding member, the support member disengages the rear end of the document holding member and opens the girder clamping part provided on the handle. , the document holding member can be removed, and the document holding member can be easily and quickly attached and detached without using a tool such as a screwdriver.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIGS. 2 and 3 are vertical side views of essential parts, FIG. 4 is a perspective view of a rubber plate, and FIG. 5 is a view of a support member. A perspective view, FIG. 6 is a longitudinal cross-sectional side view of the handle, and FIG. 7 is a perspective view of main parts showing another embodiment. 1...Document stand, 3...Document holding member,
5... Locking hole, 7... Handle, 9...
... Supporting member, 10... Holding part.

Claims (2)

[Scope of utility model registration request] (1) One end of the document holding member is removably attached to the document table by a support member, the handle and the clamping piece stacked on one side of the handle are pivotally attached to each other, and the one end side of the pivoting portion is moved in a direction close to each other. An electrostatic photographic copying apparatus characterized in that the original holding member is held by a holding part which is biased by a spring and is composed of a handle and a holding piece, and the handle is attached to the other end of the original holding member. The machine's document holding device. (2) A locking hole is provided at one end of the document holding member, and a support member is removably locked to the locking hole, as described in claim (1) of the utility model registration claim. Original holding device for electrostatic photocopying machines.