JPS6128194Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a platen cover for a copying machine that is removable from the main body of the copying machine.

With this type of conventional platen cover, even if it is not properly attached to the main body of the copying machine, it can be opened and the original can be placed on the platen.
There was a problem in that copying was performed with the platen cover not properly attached, and that the platen cover was displaced due to vibrations of the copying machine during copying, resulting in copying failures.

The present invention has been made in consideration of the above-mentioned problems, and it is an object of the present invention to provide a platen cover for a copying machine that can prevent copying operations from being performed with the platen cover not properly attached. The configuration will be explained below based on the embodiment shown in the drawings.

In the figure, 1 is the main body of the copying machine, and 2 is a platen.
A plate 3 having a predetermined thickness is fixed to the main body 1 on one side of the platen 2 so as to be easily attached and detached. 4
is a knob for easily attaching and detaching the plate 3 to the main body 1, and the shaft 5 of the knob 4 passes through the plate 3, and has a protrusion 6 protruding from its tip. The tip of the shaft 5 passes through the main body 1, and by twisting it approximately 90 degrees, the protrusion 6 engages with the lower surface of the main body 1, so that the shaft 5 is engaged in the direction in which it comes out. As shown in FIG.
A groove 7a is provided therethrough, and a cam 8 is provided around the hole 7 on the lower surface of the main body 1, with which the projection 6 engages. The upper part 4a of the knob 4 is tongue-shaped, and the relationship between the upper part 4a and the protrusion 6 of the shaft 5 is as follows.
(Fig. 2), the protrusion 6 of the shaft 5 engages with the cam 8 on the lower surface of the main body 1, and the upper part 4a
The projection 6 of the shaft 5 comes out of the groove 7a of the main body 1 when the shaft 5 is oriented in a direction perpendicular to the rotating shaft of the platen cover 21. plate 3 and knob 4
A spring 9 is interposed between the collar and the collar.

10 is a pivot member, and the base 1 of this pivot member 10 is
A shaft 12 is protruded from the lower surface of the plate 3, and the shaft 12 passes through the plate 3. A protrusion 13 is protruded from the tip of the shaft 12, and the distance between the protrusion 13 and the lower surface of the plate 3 is The position can be freely moved in the vertical direction. The pivot member 10 is the base 1
1, a rotating member 15 pivoted to the base 11 with a pin 14, a block 16 locked to the tip of the rotating member 15, and a receiving member 18 pivoted to the base 11 with a pin 17. toggle spring 19 interposed between
and a guide rod 20 which guides and supports the toggle spring 19 and has one end fixed to the receiving member 18 and the other end inserted through the block 16, and a platen cover 21 is fixed to the rotating member 15. It has been done.

A hole 22 corresponding to the upper part 4a of the knob 4 is provided in the rotating base of the platen cover 21, and the upper part 4a of the knob 4 passes through the hole 22 when the platen cover 21 is closed. There is. Further, a protruding wall 21a is provided on the tip side of the hole 22 of the platen cover 21, and when the upper part 4a of the knob 4 is in a direction perpendicular to the direction of rotation of the platen cover 21 (the state in which the knob 4 is removed from the main body 1). When the platen cover 21 is opened, the protruding wall 21 interferes with the upper part 4a of the knob 4, so that the platen cover 21 cannot be opened.

In the above configuration, the plate 3 has the shaft 5 of the knob 4 passing through the plate 3 passing through the main body 1,
The pivot member 10 is fixed to the main body 1 by rotating approximately 90 degrees and is therefore attached to this plate 3.
The platen cover 21 is also attached to the main body 1 via. In this state, the platen cover 21 is opened and closed using the pin 14 of the pivot member 10 as a fulcrum. At this time, the platen cover 21 is held in the closed and open states by the toggle spring 19, and in an intermediate operating state, the platen cover 21 is held by the toggle spring 19 and is stopped at an arbitrary position. When a thick original is placed on the platen cover 2, when it is pushed by the platen cover 21, the pivot member 10 moves upward due to the movement of the shaft 12 and follows this, and the platen cover 21 is held horizontally so that the original has the above-mentioned thickness. hold the original.

When the knob 4 is rotated and removed from the main body 1, the plate 3 and the knob 4 are separated from the main body 1, and the entire platen cover 21 is separated from the main body, and the upper surface of the main body 1 is approximately flush with the platen 2. This increases the space needed to copy a portion of a large original.

Further, in the above configuration, when the knob 4 for fixing the plate 3 is detached from the main body 1, the upper part 4a of this knob 4 is attached to the platen cover 2.
The platen cover 21 interferes with the protruding wall 21a of 1.
Since the platen cover 21 cannot be opened, copying operations are prevented from being performed with the platen cover 21 not properly attached.

Note that the end surface of the plate 3 functions as a stopper for documents accidentally moved from the platen 2 side.

The present invention is as described above, and the pivot portion 10 with the platen cover 21 fixed to the rotary member 15 is provided on the plate 3 so as to be movable up and down, and the plate 3 and the main body 1 of the copying machine are rotated approximately 90 degrees. As a result, the knob 4 becomes the removable position at the position where both are fixed.
When the knob 4 is in the fixed position, the upper part 4a of the knob 4 is fixed at the platen cover 21.
The platen cover 21 is formed into a tongue shape that faces in the direction of the rotation axis of the platen cover 21, and faces perpendicular to the rotation axis of the platen cover 21 when it is in the removable position. Since the projecting wall 21a is provided to interfere with the upper part 4a of the knob 4 which is in the removable position when the opening operation is performed, it is possible to prevent the copying operation from being performed with the platen cover 21 not properly attached, thereby reducing the vibration of the copying machine. It is possible to eliminate copy failures due to

[Brief explanation of the drawing]

Figure 1 is an overall perspective view, Figure 2 is a - of Figure 1.
3 is a cross-sectional view taken along the line - in FIG. 1, and FIG. 4 is a view taken along the line arrow in FIG. 2. 1 is a main body, 2 is a platen, 3 is a plate, 4 is a knob, 10 is a pivot member, 15 is a rotating member, 21
is the platen cover.

Claims (1)

[Scope of utility model registration request] A pivot part 10 having a bracket cover 21 fixed to a rotating member 15 is provided on the plate 3 so as to be movable up and down.
The plate 3 and the main body 1 of the copying machine are fixed by a knob 4 that can be rotated approximately 90 degrees to a position where they are fixed and a position where they can be removed.
The upper part 4a of the knob 4 is formed in the shape of a tongue so that it faces in the direction of the rotation axis of the platen cover 21 when the knob 4 is in the fixed position, and in the direction perpendicular to the rotation axis of the platen cover 21 when the knob 4 is in the detachable position. The platen cover for a copying machine is further characterized in that a protruding wall 21a is provided at the rotating base end of the platen cover 21, which interferes with the upper part 4a of the knob 4 which is in a detachable position when the platen cover 21 is opened. .