JPH0531639Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> This invention relates to a holding mechanism for a table glass on which a document is placed.

<Prior Art and Its Disadvantages> Conventionally, a table glass 1 on which a document is placed in a copying machine or the like has an end portion as shown in a sectional view of the main part in FIG. 5 and a plan view of the copying machine in FIG. The cross section fixed to the table glass support plate 4 is fixed in a pressed state by the substantially L-shaped table glass press plates 2 and 3. This table glass pressing plate 2 also plays the role of regulating the reference position of the document.

In the above configuration, in order to attach and detach the table glass 1, the table glass holding plates 2 and 3 must be removed, or the spring properties of these holding plates can be used without removing the table glass holding plates 2 and 3. However, the former method has very poor workability, and the latter method has the inconvenience of breaking or chipping the table glass. In this method of forcibly attaching and detaching the table glass, the thickness c of the table glass 1 and the width b between the horizontal piece 2a of the table holding plate 2 and the table glass support plate 4 when the table glass is removed are shown in FIG. In relation to this, the width b is smaller than the thickness c of the table glass, which is a cause of breakage when the table glass is attached or removed. However, in order to solve this problem, the thickness of the table glass
Then, if the relationship between the width b between the horizontal piece of the table holding plate and the table support plate when the table glass is removed is set so that this width b is larger than the thickness c of the table glass, then after the table glass is attached, Table glass 1 and table glass holding plate 2
A gap a (FIG. 5) is created between the table glass and the table glass, and the table glass holding plate 2 no longer plays the role of regulating the reference position of the document, and the table glass is not fixed.

<Purpose of the invention> This invention was made in view of the above points, and when the table glass is attached, the horizontal piece of the table glass holding plate is automatically pushed up, and when the table glass is removed, the horizontal piece of the table glass holding plate is pushed up automatically. To provide a table glass holding mechanism that automatically returns the table glass from a pushed up state to the original state and easily attaches and detaches the table glass without damaging it.

<Structure and effect of the invention> This invention provides a hinge member rotatably supported below the table glass pressing plate, and when the hinge member is in a substantially vertical position, The present invention is characterized in that an elastic member is provided, the size of which is set to push up the horizontal piece of the table glass holding plate, and an elastic member that applies an elastic force so that the hinge member rotates from the vertical piece of the table glass holding plate to one side horizontally.

According to this invention, configured as described above, before the table glass is attached, the hinge member is in a substantially vertical position, so that the horizontal piece of the table glass holding plate is pushed up. Therefore, it becomes easy to attach the table glass, and no glass chips or the like occur during attachment. Also, when the table glass is attached, the hinge member rotates to a nearly horizontal position,
The horizontal piece of the table glass holding plate returns to its original state and automatically presses the table glass. When the table glass is further removed from this state, the hinge member is automatically rotated back to the substantially vertical position by the elastic member to push up the horizontal piece of the table glass holding plate.

By providing the hinge member and the elastic member in this manner, there is no need to remove the table glass pressing plate when attaching or detaching the table glass, and there is no possibility of damage to the table glass. Moreover, there is no gap between the horizontal piece of the table glass holding plate and the table glass, so the document does not get caught in the gap, and there is an advantage that the table glass holding plate fulfills its role of regulating the reference position of the document without any problems.

<Example> Fig. 1 and Fig. 3 are sectional views of essential parts of an embodiment of this invention, Fig. 2 is a side view of Fig. 1, and Fig. 1 shows the state before the table glass is attached. FIG. 3 shows the state when the table glass is attached.

FIG. 1 shows the vicinity of the end of a table glass, which is part of a copying machine and on which a document is placed. In FIG. 1, a table glass support plate 4 for supporting a table glass is provided on the top surface of the copying machine. The table glass holding plate 2 has a horizontal piece 2a and a vertical piece 2.
It has a substantially L-shape having a shape of 1.b, and is fixed to the table glass support plate 4. This table glass support plate 4 has hinge support pieces 4a and 4b facing downward.
is formed. These hinge support pieces 4a, 4b
A shaft 6 passes through the lower part of the shaft 6, and a spring 7 is provided on the shaft 6, and a hinge 5 is attached to the shaft 6.
This spring 7 is attached so as to rotate the hinge 5 from the vertical piece 2b of the table glass holding plate 2 toward the horizontal piece 2a. A slit 8 is provided in the table glass support plate 4 so that the hinge 5 can rotate. Further, the table glass support plate 4 is provided with a stopper 4c for regulating the tip of the table glass when the table glass is attached.

FIG. 1 shows the state before the table glass is attached, and the hinge 5 is pushing up the horizontal piece 2a of the table glass holding plate 2. FIG. 3 is a diagram showing the state in which the table glass is attached. By attaching the table glass 1 to the position of the stopper 4c of the table glass support plate 4, the hinge 5
rotates about the shaft 6 to the vertical piece 2b side of the table glass holding plate 2, and is housed in the lower part of the table glass support plate 4. When the table glass is removed, the hinge 5 automatically rotates back to the substantially vertical position where it pushes up the horizontal piece 2a of the table glass holding plate 2 by the elastic force of the spring 7.

As described above, according to this embodiment, the distance between the tip of the horizontal piece 2a of the table glass holding plate 2 and the table glass support plate 4 changes before and after the table glass is attached, so that the table glass can be attached safely. And it's easy to do. That is, since the horizontal piece 2a of the table glass holding plate 2 is pushed up before the table glass is attached, the table glass can be easily attached and the table glass can be prevented from breaking at this time.
Furthermore, as the table glass is attached, the hinge 5 rotates against the spring by the tip of the table glass, so the horizontal piece 2a of the table glass holding plate 2 gradually begins to return to its original state, and finally returns to a position where its tip presses against the table glass. At this time, since the table glass has already been inserted and mounted to the stopper position of the table glass support plate, the table glass is securely pressed by the table glass holding plate. Furthermore, when removing the table glass,
The hinge 5 is moved by the spring 7 as the table glass moves.
As the horizontal piece 2a is gradually rotated and pushed up little by little by the action of can.

[Brief explanation of the drawing]

Figures 1 and 3 are sectional views of essential parts of an embodiment of this invention, Figure 2 is a side view of Figure 1, Figure 1 shows the state before the table glass is attached, and Figure 3 Shows the state when the table glass is attached. Fig. 4 is a plan view of the copying machine with the document cover removed, Fig. 5 is a cross-sectional view of the main parts of a conventional copying machine, and Fig. 6 is a diagram showing the main parts of a conventional copying machine when inserting a table glass. Indicates the condition. 1...Table glass, 2, 3...Table glass holding plate, 2a...Horizontal piece, 2b...Vertical piece, 4...Table glass support plate, 4a, 4b...
...Hinge support piece, 4c...Stopper, 5...Hinge, 6...Shaft, 7...Spring, 8...Slit, 9
...Manuscript.

Claims (1)

[Claims for Utility Model Registration] In a table glass holding mechanism in which the edge of the table glass on which a manuscript is placed is held down by a table glass holding plate having a substantially L-shaped cross section and fixed to a table glass support plate, A rotatably supported hinge member is provided below the table glass holding plate, and the hinge member is set to a size that pushes up the horizontal piece of the table glass holding plate when the hinge member is in a substantially vertical position. , and an elastic member that applies an elastic force so that the hinge member rotates from the vertical piece of the table glass holding plate to one side horizontally.