JPH0920444A - Paper discharge tray device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive paper discharge tray device whereby many sheets of recording papers can be loaded in a condition that the paper can be easily arranged. SOLUTION: The first paper discharge tray 23 of a paper discharge tray device 20 is removably mounted in a turn member 21 turnably supported through a shaft 22, and the turn member is regulated in turning in the clockwise direction by the first regulating member 25 and in turning in the counterclockwise direction by the second regulating member 26. From paired paper discharge rollers 13a, 13b of a copying device main unit 10, recording paper 11 is successively discharged on the first paper discharge tray 23, and when turn giving force in the counter clockwise direction by weight of the recording paper 11 exceeds of prescribed value, the second regulating members 26a, 26b are moved in a right direction against energizing force of a spring 28, to turn the turn member 21 and the paper discharge tray 23 in the counterclockwise direction. In this way, a plurality of sheets of the recording papers 11 on the first paper discharge tray 23 are collectively dropped onto the second paper discharge tray 29 in a lower part of the first paper discharge tray 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper discharge tray device,
More specifically, the present invention relates to a paper ejection device for ejecting a large number of recorded sheets of paper such as a copying machine, a printer device, and a facsimile device, and relates to a paper ejection tray device for placing a large number of paper sheets.

[0002]

2. Description of the Related Art Recently, in the information society, copying machines,
Along with the widespread use of paper ejecting devices such as printers and facsimiles for ejecting paper, the number of paper ejected by these paper ejecting devices onto a paper ejection tray provided in the paper ejecting device is also increasing.

In such a sheet discharging device for discharging a large number of sheets, in order to organize the discharged sheets, it is easy to handle the large number of discharged sheets on the sheet discharge tray. It is an important issue how to put it.

As such a paper ejection tray device, for example, the paper ejection tray device (actual flat sheet 2) previously proposed by the present applicant is proposed.
-64560).

This paper discharge tray device is a paper discharge tray device in which a large number of recording papers are stacked on an inclined paper discharge tray, and a rocking body is vertically swingable and has an elastic body on the paper discharge tray. The feature is that it is installed.

According to this paper discharge tray device, the recording paper discharged onto the paper discharge tray is placed on the oscillating body and shakes due to the weight of the recording paper as the discharged recording paper increases. The moving body sinks downward.

Therefore, since the oscillating body swings up and down according to the number of recording papers, a large number of recording papers can be placed, and when the recording papers are removed from the paper ejection tray, Even if the recording sheet is formed deep, by sequentially removing it from the upper recording paper, the recording paper in the paper discharge tray is lifted upward by the oscillating body according to the number of recording papers and can be easily removed.

[0008]

However, in such a conventional paper discharge tray device, a rocking member having an elastic member is used to rock the recording paper up and down according to the number of the recording paper. Therefore, as the number of recording sheets to be placed on the paper ejection tray is increased, a stronger elastic body is required, and the paper ejection tray cannot be attached to a paper ejection device such as a facsimile device. The device itself and the discharge tray itself need to have a strong structure.

As a result, there is a problem that the paper discharge device and the paper discharge tray device become expensive.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a discharge tray device which is inexpensive and easy to handle paper.

[0011]

According to a first aspect of the present invention, there is provided a paper ejection tray device in which the papers to be sequentially ejected are placed in a paper ejection section of the paper ejection device for ejecting predetermined papers. The first paper ejection tray is attached so as to be rotatable about a predetermined fulcrum, and when the weight of the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is Is rotated downward, and the sheets on the first sheet ejection tray are collectively dropped and placed on the second sheet ejection tray provided below the first sheet ejection tray. In the sheet ejection tray device, the urging unit urges the first sheet ejection tray upward with a predetermined urging force, and the first restricting unit includes the first urging unit for urging the first sheet ejection tray. Rotation of the paper ejection tray in the upward direction at a position suitable for the first paper ejection tray to load the paper. Won, second regulating means, said first
A predetermined amount of rotation load for restricting the rotation of the first sheet discharge tray is applied to the first sheet discharge tray, and the first sheet is placed on the first sheet discharge tray according to the weight of the sheets. The downward rotation of the first discharge tray is restricted until the downward rotation imparting force of the sheet discharge tray reaches a predetermined imparting force, and the rotation imparting force of the sheet is set to the predetermined amount. When the applied force is exceeded, the above-mentioned object is achieved by releasing the restriction of the downward rotation of the first paper discharge tray.

That is, according to the paper ejection tray device of the first aspect of the invention, the paper ejection tray device places the paper to be sequentially ejected in the paper ejection portion of the paper ejection device for ejecting a predetermined paper. The first paper ejection tray is attached so as to be rotatable around a predetermined fulcrum, and when the weight of the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is moved. By rotating downward, the sheets on the first sheet ejection tray are collectively dropped and placed on the second sheet ejection tray provided below the first sheet ejection tray. The first output tray is
The urging unit urges the urging unit upward with a predetermined urging force, and the first urging unit regulates the upward rotation of the urging unit at a position suitable for placing a sheet. ing.

A predetermined amount of rotation load for restricting the rotation of the first paper discharge tray is applied to the first paper discharge tray by the second restriction means. The downward rotation of the sheet is restricted by the load until the downward rotation imparting force due to the weight of the placed paper reaches a predetermined imparting force, and the sheet rotational imparting force is the predetermined imparting force. When it exceeds, the restriction of the downward rotation is released.

Therefore, the first paper discharge tray is held at a position suitable for the sheets to be loaded until the rotation imparting force due to the weight of the sheets to be sequentially placed reaches the predetermined imparting force. , When the rotation imparting force by the paper exceeds a predetermined imparting force,
By rotating downward, the plurality of sheets that have been placed are collectively dropped and placed on the second sheet ejection tray.

As a result, the first device attached to the paper discharge device
It is possible to place a large number of paper sheets on the second paper ejection tray in an easy-to-handle state without making the paper ejection tray or the paper ejection device itself to be strong enough to withstand the weight of a large number of paper sheets. The paper discharge tray device and thus the paper discharge device can be made inexpensive, and the discharged paper can be placed in a state that is easy to handle.

In this case, for example, as described in claim 2, in the second restricting means, the first discharge tray that has once rotated downward is moved upward by the urging force of the urging means. As the rotation load applied to the first paper ejection tray when the paper is rotated to the lower direction, the downward load of the first paper ejection tray due to the weight of the paper on the first paper ejection tray The rotation load may be applied at least 5% or more smaller than the rotation load applied.

In this way, the first paper discharge tray is
Until the rotation imparting force due to the weight of the sequentially placed sheets reaches a predetermined imparting force, the sheet can be held at a position suitable for being placed, and the sheet is rotated once downward. When the first sheet discharge tray returns to the position regulated by the first regulation unit by the urging force of the urging unit, it can be quickly returned.

Further, for example, as described in claim 3, the second restricting means engages with the first paper discharge tray to move the first paper discharge tray in the rotating direction. A regulation member that moves between a regulation position that regulates the rotation and a release position that releases the regulation of the rotation of the first paper ejection tray in the rotation direction, and the regulation member that moves between the regulation position and the regulation position. A guide member that movably guides between the release position and the regulation member until the rotation imparting force of the sheet placed on the first sheet ejection tray reaches a predetermined imparting force. A biasing member that biases in the position direction may be provided.

In this way, the first paper discharge tray is
It is possible to more reliably hold the paper at a position suitable for being placed until the turning imparting force due to the weight of the sequentially placed sheets reaches a predetermined imparting force, improving the sheet placing property. Can be made.

Further, for example, as described in claim 4, the second regulating means has an engaging portion which engages with the first paper ejection tray, and the second paper ejecting tray is provided on the first paper ejection tray. The engaging portion is pressed in the direction of the first sheet discharge tray with a predetermined elastic force until the downward rotation applying force of the sheet placed on the sheet reaches a predetermined applying force, It may be formed of an elastic member that restricts downward rotation of the paper discharge tray.

With this arrangement, the second restricting means, and thus the paper discharge tray device, can be made even smaller and less expensive.

Here, a leaf spring or the like is used as the elastic member.

In each of the above cases, for example, as described in claim 5, the first paper discharge tray is detachably mounted on a rotary member rotatably mounted on the paper discharge device. By the biasing means, the rotating member is
The first discharge tray attached to the rotating member is urged upward by a predetermined urging force, and the first regulating means prevents the urging means from rotating upwardly. The sheet is regulated at a position suitable for placing the sheet, and the second regulating means applies a predetermined amount of rotational load for regulating the rotation, and the sheet is placed on the first paper discharge tray. The downward rotation is restricted until the downward rotation imparting force of the sheet reaches a prescribed imparting force, and when the pivot imparting force of the sheet exceeds the prescribed imparting force, The restriction on the rotation in the direction may be released.

In this way, it is possible to reduce the cost of the paper discharge tray device that can place discharged paper in an easy-to-handle state, and when the first paper discharge tray is not used. Can be removed, and the storage space of the discharge tray device can be reduced.

According to a sixth aspect of the present invention, there is provided a paper discharge tray device,
In the paper discharge section of the paper discharge device that discharges the specified paper,
A first paper discharge tray on which the sequentially discharged paper sheets are placed is attached rotatably around a predetermined fulcrum,
When the weight of the sheet placed on the first sheet ejection tray exceeds a predetermined weight, the first sheet ejection tray rotates downward and is provided below the first sheet ejection tray. A sheet ejection tray device in which the sheets of the first sheet ejection tray are collectively dropped and placed on a second sheet ejection tray, and the urging means includes the first sheet ejection tray. Is urged in the upward direction by a predetermined urging force, and the first restricting means causes the urging means to rotate the first paper discharge tray in the upward direction by the first paper discharge tray. The sheet is regulated at a position suitable for placing the sheet, and the sheet is moved in a predetermined direction to release the regulation of the upward rotation of the first sheet ejection tray, and the second regulating unit is configured to A predetermined amount of rotation load for restricting rotation of the first paper discharge tray is applied to the first paper discharge tray to provide the first paper discharge tray.
Until the downward rotation imparting force of the first sheet ejection tray due to the weight of the sheets placed on the sheet ejection tray reaches a predetermined imparting force. When the rotation imparting force of the sheet exceeds the predetermined imparting force, the regulation of the downward rotation of the first sheet ejection tray is released, and the first regulation is performed. The first by means
When the restriction of the upward rotation of the paper discharge tray is released, the holding means holds the first paper discharge tray rotated upward at a predetermined proximity to the paper discharge device. By doing so, the above object is achieved.

That is, according to the sixth aspect of the present invention, the sheet ejection tray device places the sheets to be sequentially ejected on the sheet ejection portion of the sheet ejection device that ejects a predetermined sheet. The first discharge tray to be placed is rotatably attached about a predetermined fulcrum, and when the weight of the sheet placed on the first discharge tray exceeds a predetermined weight, the first discharge tray is placed. Rotates downward and the sheets on the first paper ejection tray are collectively dropped and placed on the second paper ejection tray provided below the first paper ejection tray. The first discharge tray is biased upward by a predetermined biasing force by the biasing means, and the first restricting means causes the upward rotation by the biasing means to be the first discharge tray. The tray is regulated at a position suitable for placing sheets, and the first regulation means is movable in a predetermined direction. The regulation of the rotation in the upward direction is released.

Then, the second restricting means applies a predetermined amount of rotation load for restricting the rotation of the first sheet ejection tray to the first sheet ejection tray, and causes the first sheet ejection tray to move onto the first sheet ejection tray. The downward rotation of the first sheet ejection tray is regulated until the downward rotation imparting force of the first sheet ejection tray due to the weight of the placed sheet reaches a predetermined imparting force. When the rotation imparting force exceeds a predetermined imparting force, the regulation of the downward rotation of the first sheet ejection tray is released.

Further, when the restriction of the upward rotation of the first paper discharge tray by the first restriction means is released, the holding means moves the first paper discharge tray rotated upward. The paper is held at a predetermined close position to the paper discharge device.

Therefore, the first paper discharge tray is held at a position suitable for the sheets to be placed until the rotation imparting force due to the weight of the sheets to be sequentially placed reaches the predetermined imparting force. , When the rotation imparting force by the paper exceeds a predetermined imparting force,
By rotating downward, a plurality of sheets that have been placed can be collectively dropped and placed on the second sheet ejection tray.

When the first paper discharge tray is not used, the second restricting means is moved to rotate the first paper discharge tray upward to a predetermined position close to the paper discharge device. And can be held by the third restricting means.

As a result, the first device attached to the paper discharge device
It is possible to place a large number of paper sheets on the second paper ejection tray in an easy-to-handle state without making the paper ejection tray or the paper ejection device itself strong enough to bear the weight of a large number of paper sheets. The paper ejection tray device can be made inexpensive, and the paper ejection tray device when the first paper ejection tray is not used, and consequently, the installation space of the paper ejection device can be reduced, and the first paper ejection device It is possible to prevent the first paper discharge tray from being lost or damaged due to the removal of the tray.

[0032]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The examples described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. The present invention is not limited to these modes unless there is a statement to limit the above.

1 to 4 are views showing a first embodiment of the paper discharge tray device of the present invention.

FIG. 1 is an overall schematic configuration diagram of a copying machine 1 to which a first embodiment of a paper discharge tray device of the present invention is applied.

In FIG. 1, the copying apparatus 1 is roughly divided into a copying apparatus main body 10 and a discharge tray device 20.

The copying apparatus main body 10 is provided with a reading unit for reading an image of a document and a recording unit for recording and outputting the image read by the reading unit on a recording paper (paper) 11 by, for example, an electrophotographic method. The recording paper 11 on which the image is recorded by the recording unit is a pair of paper discharge rollers 13a, 1a, which are discharge units provided on the upper side of the copying apparatus main body 10 by the guide plate 12.
It is transported to 3b.

The recording paper 11 conveyed to the paper discharge roller pair 13a, 13b is discharged (paper discharge) out of the copying machine main body 10 by the paper discharge roller pair 13a, 13b.

The discharge roller pair 13 is a side portion of the copying apparatus main body 10 provided with the discharge roller pair 13a and 13b.
Below the predetermined distance from a and 13b, the discharge tray device 2
A zero rotation member 21 is rotatably attached via a shaft (fulcrum) 22, and a first paper discharge tray 23 is detachably attached to the rotation member 21.

That is, the shaft 22 is attached to the copying apparatus main body 10, and the rotating member 21 is rotatably supported by the shaft 22. In addition, the shaft 22 is rotatably attached to the copying apparatus main body 10, and the rotating member 21 is connected to the shaft 22.
The rotation member 21 may be rotatably supported via the shaft 22 by being fixed to the. In short, it is sufficient that the rotating member 21 is rotatably attached to the copying apparatus main body 10 via the shaft 22.

As shown in FIG. 2, the rotating member 21 is formed in a substantially U shape having two arms 21a and 21b, and the upper arm 21a projects toward the lower arm 21b. The claw portion 21c is formed.

Arms 21a and 21b of the rotating member 21
The base end portion of the first paper ejection tray 23 is removably inserted in between, and a claw portion 23a protruding upward is formed at the tip of the base end portion of the first paper ejection tray 23. .

The first discharge tray 23 has its base end portion inserted between the arms 21a and 21b of the rotating member 21 so that the claw portion 23a of the first discharge tray 23 and the rotating member 21 arm. The bottom portion of the base end portion of the first paper ejection tray 23 is engaged with the claw portion 21c of the arm 21 of the rotating member 21.
It is held by 1b and attached to the rotating member 21.

The first discharge tray 23 has its free end side lifted upward, so that the claw portion 23
The engagement between a and the claw portion 21c is released, and the claw portion 21c can be removed from the rotating member 21.

The first discharge tray 23 has its free end inclined upward by a predetermined angle, and has a pair of discharge rollers 13a and 1a.
The recording paper 1 discharged from the 3b onto the first discharge tray 23
1 is held on the first paper discharge tray 23.

The first paper discharge tray 23 of the rotating member 21.
One end of a spring (urging means) 24 is attached to the end portion on the side opposite to, and the other end of the spring 24 is
Although not shown in detail, it is fixed to the copying apparatus main body 10.

Therefore, the rotating member 21 is rotated by the spring 24 in the clockwise direction (direction opposite to the arrow A in FIG. 2), that is, the rotating member 21 rotates the first paper discharge tray 23 upward. Receives motive force.

The lower part of the rotating member 21, that is, the shaft 2
At a position opposite to the first paper ejection tray 23 than 2
A first restricting member (first restricting means) 25 is provided, and the first restricting member 25 is fixed to the copying apparatus main body 10 or the like.

The lower end of the rotating member 21 in the direction opposite to the first paper discharge tray 23 contacts the first restricting member 25, and the first restricting member 25 is rotated by the rotating member 21. The rotation of 21 in the clockwise direction is restricted.

The first restricting member 25 is the rotating member 21.
Is rotated clockwise by the spring 24, and the lower end of the rotating member 21 abuts the first restricting member 25,
The first paper discharge tray 23 mounted on the rotating member 21
Is disposed at a position where the recording paper 11 discharged from the pair of discharge rollers 13a and 13b shown in FIG. 1 is stopped at a position where the recording paper 11 is appropriately placed on the first discharge tray 23.

The first discharge tray 2 of the rotating member 21
An inclined surface 21d that is inclined at a predetermined angle in the opposite direction to the first paper ejection tray 23 is formed at the upper end on the side opposite to 3, and the first paper ejection tray 23 of the rotating member 21 is The end face on the opposite side is the first face downward from the inclined face 21d.
Of the inclined surface 21 that is inclined at a predetermined angle in the direction of the sheet discharge tray 23
e.

The first discharge tray 23 of the rotating member 21
A second restricting member 26 having a rectangular side surface is disposed on the upper side opposite to the rotating member 21. The lower end of the second restricting member 26 on the rotating member 21 side is provided with the rotating member 21. Inclined surface 21d
An inclined surface 26a having the same inclination angle as is formed.

A guide hole 26b having a long diameter that is long in the horizontal direction is formed in the second restricting member 26, and a pair of guide members 27a, 27b arranged in the guide hole 26b in the long diameter direction are formed in the guide hole 26b. Has penetrated.

The guide members 27a27b guide the second restricting member 26 in the direction of the rotating member 21 and in the opposite direction,
The second restriction member 26 is moved in a substantially horizontal direction by a predetermined amount.

One end of a spring (urging member) 28 is fixed to the side surface of the second restricting member 26 opposite to the rotating member 21, and the other end of the spring 28 is attached to the copying apparatus main body 10. It is fixed.

The spring 28 urges the second restricting member 26 toward the rotating member 21 with a predetermined urging force so that the inclined surface 26a of the second restricting member 26 is inclined toward the rotating member 21.
The rotation member 21 is prevented from rotating in the counterclockwise direction (the direction of arrow A in FIG. 2) by contacting it with the inclined surface 21d of the rotation member 21 and the second regulation member 26.
When the rotating member 21 is rotated in the counterclockwise direction out of the inclined surface 26a of the rotating member 21, the lower end portion of the second restricting member 26 is pressed against the inclined surface 21e of the rotating member 21, and the rotating member 21 is rotated. Helps to rotate clockwise.

That is, as will be described later, when a plurality of recording papers 11 are sequentially ejected and placed on the first paper ejection tray 23 by the paper ejection roller pairs 13a and 13b, the first papers are ejected.
Due to the weight of the recording paper 11 placed on the paper discharge tray 23, the rotating member 21 is rotated in the counterclockwise direction via the first paper discharge tray 23. Dynamic force acts.

At this time, in the spring 28, until the rotation imparting force reaches a predetermined rotation imparting force, the inclined surface 21d of the rotating member 21 is caused by the rotation imparting force so that the inclined surface 21d of the second restricting member 26 becomes. 26a is pressed against the pressing force that presses the second restricting member 26 toward the spring 28, and the inclined surface 26a of the second restricting member 26 is moved to the inclined surface 21 of the rotating member 21.
By making contact with d, a rotating load is applied to restrict the rotation of the rotating member 21 in the counterclockwise direction, and the rotation applying force exceeds the predetermined rotation applying force due to the weight of the recording paper 11. Then, the spring 28 is compressed by the pressing force, the inclined surface 26a of the second restricting member 26 is disengaged from the inclined surface 21d of the rotating member 21, and the rotation of the rotating member 21 in the counterclockwise direction is restricted. It will be canceled.

Further, the spring 28 is provided with a second restricting member 2 when the rotating member 21 starts rotating counterclockwise.
6, the lower end portion of the rotating member 21 on the rotating member 21 side is provided with the inclined surface 2 of the rotating member 21.
It is pressed against 1e and acts so as to rotate the rotating member 21 in the counterclockwise direction.

However, the inclined surface 21d of the rotating member 21 and the inclined surface 26a of the second regulating member 26 are in surface contact with each other, and the inclination angle of these inclined surfaces 21d and 26a with respect to the horizontal direction is rotated. Since the inclination angle formed with the vertical direction of the inclined surface 21e of the member 21 is formed to be smaller,
The rotation load applied to the counterclockwise rotation of the rotation member 21 by the restriction member 26 is larger than the rotation load applied to the rotation of the rotation member 21 in the clockwise direction. It becomes a turning load.

In this case, the rotating load force acting on the clockwise rotation of the rotating member 21 is larger than the rotating load force acting on the counterclockwise rotation of the rotating member 21. The rotational load force is set to be at least 5% (percent) or more, and preferably 10% or less.

That is, the rotating load acting on the counterclockwise rotation of the rotating member 21 is the inclination angle of the inclined surface 21d of the rotating member 21 and the inclined surface 26 of the second regulating member 26.
The inclination angle of a, the urging force of the spring 28, and the urging force of the spring 24 determine the magnitude thereof, and the rotational load force acting on the clockwise rotation of the rotating member 21 is Since the size is determined by the inclination angle of the inclined surface 21e of the rotating member 21, the urging force of the spring 28, and the urging force of the spring 24, the inclined surface 21d, the inclined surface 26a, and the inclined surface 21e. The inclination angle of B and the biasing force of the spring 28 and the spring 24 so that the difference between the counterclockwise rotational load force and the clockwise rotational load force is at least 5% or more, and preferably, 10
Set it so that it is at least%.

Therefore, the second restricting member 26, the guide members 27a and 27b, and the spring 28 as a whole have a predetermined amount for restricting the rotation of the first paper ejection tray 23 to the first paper ejection tray 23. A rotation load is applied so that the weight of the recording paper 11 placed on the first paper ejection tray 23 imparts a predetermined rotation imparting force to the first paper ejection tray 23 in the rotational direction. The first ejection tray 23 is regulated to the position regulated by the first regulation member 25 until the force is applied, and the recording paper 1
When the rotation imparting force by 1 exceeds a predetermined imparting force, the second regulating means for canceling the regulation of the rotation of the first paper discharge tray 23 is configured.

Referring again to FIG. 1, a large box-shaped second paper discharge tray 29 is disposed on the floor below the first paper discharge tray 23 at the side of the copying machine body 10. When the first paper ejection tray 23 on which a plurality of sheets of recording paper 11 are placed rotates in the direction of the arrow in FIG.
The recording papers 11 collectively falling from the first paper discharge tray 23 are stored (placed).

Next, the operation will be described.

In this embodiment, the paper discharge tray device 20 is provided with a first paper discharge tray 23 and a second paper discharge tray 29, and a predetermined number of recording papers 11 discharged from the copying apparatus main body 10 are provided. When it is placed on the first paper ejection tray 23, the first paper ejection tray 23 rotates downward, and the plurality of recording papers 11 on the first paper ejection tray 23 are collected together into the first paper ejection tray 23. The feature is that it is dropped and placed on the second paper discharge tray 29.

The operation of the paper discharge tray device 20 will be described below.

The copying apparatus 1 records an image on the recording paper 11 by the copying apparatus main body 10 and uses the recording paper 11 for the guide plate 12.
The recording paper 11 is discharged to the outside of the copying apparatus main body 10 by the pair of discharging rollers 13a and 13b, and the recording paper 11 is discharged to the first side of the copying apparatus main body 10. The sheets are sequentially placed on the paper discharge tray 23.

The first discharge tray 23 is detachably attached to a rotating member 21 whose base end is rotatable about a shaft 22.
A rotation imparting force is imparted in the clockwise direction by 4 and a second regulating member 2 is energized by a spring 28.
The slanted surface 26a of 6 abuts on the slanted surface 21d of the rotating member 21 to restrict rotation in the counterclockwise direction.

The rotation of the rotating member 21 in the clockwise direction by the spring 24 is restricted by the first restricting member 25, and the first restricting member 25 moves the rotating member 21 in the clockwise direction. By restricting the rotation at a predetermined position, the recording paper 11 discharged from the discharge roller pair 13a, 13b is properly placed on the first discharge tray 23, and the first discharge tray 23 Is held.

The recording paper 11 ejected from the paper ejection roller pair 13a, 13b is sequentially placed on the first paper ejection tray 23, and is rotated through the first paper ejection tray 23 by the weight of the recording paper 11. Until the counterclockwise rotation imparting force acting on the moving member 21 reaches a predetermined rotation imparting force, the second restricting member 26
The inclined surface 26a of the rotating member abuts on the inclined surface 21d of the rotating member 21, restricts the counterclockwise rotation of the rotating member 21, and contacts the rotating member 21 with the first restricting member 25. Hold in position.

Therefore, the first discharge tray 23 is rotated by the second restricting member 26 until the recording paper 11 placed on the first discharge tray 23 reaches a predetermined weight. Is held at a position in contact with the first restriction member 25,
Recording paper 11 ejected from paper ejection roller pair 13a, 13b
Can be appropriately placed on the first paper discharge tray 23.

When the recording paper 11 placed on the first paper discharge tray 23 exceeds a predetermined weight, the second regulating member 26 moves rightward in FIGS. The inclined surface 26a of the second restriction member 26 is the inclined surface 21d of the rotating member 21.
The second restriction member 26 releases the restriction of the counterclockwise rotation of the rotation member 21 and the spring 2
By the biasing force of 8, the tip of the second restricting member 26 on the rotary member 21 side pushes the inclined surface 21e of the rotary member 21, and the biasing force of the spring 28 rotates the rotary member 21 counterclockwise. Acts in the direction.

Therefore, the first paper discharge tray 23 rapidly rotates in the counterclockwise direction shown by the arrow in FIG. 1, and the plurality of recording papers 11 placed on the first paper discharge tray 23 are As shown in FIG. 3, the sheets collectively drop on the second paper ejection tray 29 installed below the first paper ejection tray 23.

As described above, the first paper discharge tray 23 is
When the restriction by the second restricting member 26 is released, the second restricting member 26 is swung downward quickly, so that all the recording papers 11 on the first discharge tray 23 are collected on the second discharge tray 29. It can be dropped in the state.

As the weight of the recording paper 11 for releasing the restriction by the second restriction member 26, for example, the recording papers 11 that have been successively collected and dropped in the second discharge tray 29 are:
The weight of the recording paper 11 is such that it is easy to take out and arrange the recording paper 11 in a group, and the first paper discharge tray 23, the rotating member 21 and the like are made of an inexpensive material and have a particularly strong structure. Instead, the weight is set as the number of sheets that can be placed on the first paper discharge tray 23.

All recording papers 1 on the first paper discharge tray 23
When 1 is dropped onto the second discharge tray 29, the clockwise rotation imparting force of the spring 24 overcomes the counterclockwise rotation imparting force of the spring 28, and the rotating member 21 is rotated.
Rotates in the clockwise direction together with the first paper discharge tray 23, and the rotating member 21 comes into contact with the first restricting member 25 to restrict the clockwise rotation so that the first restricting member 25 moves. Stop at the contact position.

At this time, the turning load applied to the counterclockwise rotation of the turning member 21 by the second restricting member 26 acts to the clockwise turning of the turning member 21. 5% or more, preferably 1
Since the turning load is set to be large by 0% or more, the first restricting member 25 is turned in a state where the lower end portion on the turning member 21 side is in contact with the inclined surface 21e of the turning member 21. The slanted surface 21e of the member 21 is quickly slid so that the rotating member 21
When the lower end portion of the second contact member abuts on the first restricting member 25, the inclined surface 26a of the second restricting member 26 becomes the inclined surface 2 of the rotating member 21.
The second regulating member 26 comes into contact with 1d to regulate the counterclockwise rotation of the rotating member 21.

The above-mentioned operation is performed from the copying apparatus main body 10 to the recording paper 1
1 is discharged onto the first paper discharge tray 23, and the recording paper 11 placed on the first paper discharge tray 23 is repeatedly carried out every time the predetermined weight is exceeded. As shown in FIG. 4, the recording papers 11 that have fallen together in a sheet-by-sheet manner are collected in the second discharge tray 2 in a state in which the plurality of sheets are collected together.
9 are sequentially mounted.

Therefore, the first paper ejection tray 23 is not constructed to have a strong structure for mounting all the recording papers 11 ejected from the copying apparatus main body 10, and the first paper ejection tray 23 is A predetermined number of sheets of recording paper are collectively dropped onto the second paper discharge tray 29, so that a plurality of recording papers are collected without being dropped onto the second paper discharge tray 29 in a state where all the recording papers 11 are separated. 11 can be placed on the second paper discharge tray 29, and the recording paper 11 can be easily organized by taking out the plurality of recording papers 11 collected from the second paper discharge tray 29. .

As a result, the discharge tray device 20 for mounting a large number of recording papers 11 can be made inexpensive, and the recording papers 11 can be mounted in a state where they can be easily arranged. it can.

Further, the paper discharge tray device 20 uses the first paper discharge tray 2 when the first paper discharge tray 23 is not used.
By lifting the free end portion of the upper portion 3 upward, the claw portion 23a of the first paper discharge tray 23 and the claw portion 21c of the rotating member 21 are provided.
The first paper discharge tray 23 can be detached from the rotating member 21, that is, the copying apparatus main body 10 by releasing the engagement with the, and the storage space of the paper discharge tray apparatus 20 and by extension, the copying apparatus 1 can be reduced. can do.

FIG. 5 is a diagram showing a second embodiment of the paper discharge tray device of the present invention, and this embodiment is an embodiment corresponding to claim 4. In FIG.

This embodiment is the copying apparatus 1 of the first embodiment.
The same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 5, a paper discharge tray device 30 is a first paper discharge tray 23 similar to that of the above-described embodiment and a second paper discharge tray 29 (shown in the figure) installed below the first paper discharge tray 23. The base end portion of the first paper discharge tray 23 has a claw portion 23a, and the two arms 32a and 32b of the rotating member 32 are rotatably instructed by the shaft (fulcrum) 31. By being inserted between them and engaging with the claw portion 32c of the upper arm 32a, the rotary member 32 is detachably mounted.

At the upper end of the rotating member 32 opposite to the first paper ejection tray 23, there is formed an engaging end 32d protruding toward the side opposite to the first paper ejection tray 23. One end of a spring 33 is attached to the joint end portion 32d.

Although not shown in detail, the other end of the spring 33 is attached to the copying apparatus main body 10, and the spring 33 has a predetermined amount for rotating the rotating member 32 about the shaft 31 in the clockwise direction. The rotation imparting force is applied.

A first restricting member 34 is provided below the engaging end portion 32d of the rotating member 32. The first restricting member 34 is fixed to the copying apparatus main body 10 although not shown in detail. Has been done.

The lower end portion of the engaging end portion 32d of the rotating member 32 comes into contact with the first restricting member 34, so that the first restricting member 34
Regulates the clockwise rotation of the rotating member 32 at the contact position of the engaging end portion 32d.

On the side of the rotating member 32 opposite to the first paper discharge tray 23, a plate spring (elastic body) 35 as a second restricting means having a predetermined elastic force is arranged. Spring 35
Are fixed to the copying apparatus main body 10 by fixing members 36a and 36b.

A space 10a, which is recessed in the direction opposite to the first paper discharge tray 23, is formed in the longitudinal middle portion of the plate spring 35 of the copying apparatus main body 10 to which the plate spring 35 is attached. The spring 35 serves as the engagement end portion 32 of the rotating member 32.
It is pushed by d and can be bent in the direction of the space 10a.

The leaf spring 35 is formed with an engaging portion 35a protruding toward the rotating member 32.
Engages with the engaging end portion 32d of the rotating member 32 and restricts the rotating member 32 from rotating counterclockwise.

The lower end of the engaging portion 35a which engages with the engaging end 32d of the rotating member 32 is formed substantially horizontally, and the upper portion thereof is formed into a smooth inclined surface.

According to this embodiment, the clockwise rotation of the rotating member 32 is restricted by the first restricting member 34,
With the counterclockwise rotation being restricted by the engaging portion 35a of the leaf spring 35, the first paper ejection tray 23 is set to the recording paper 1
1 is properly held at the position where the recording paper 11 is placed,
Until the recording paper 11 is placed on the sheet discharge tray 23 and the counterclockwise rotation imparting force due to the weight of the recording paper 11 reaches a predetermined rotation imparting force, the engaging portion 35a of the leaf spring 35 is formed. This restricts the counterclockwise rotation.

At this time, the engaging portion 35a of the leaf spring 35 is
A lower end portion of the rotating member 32 that engages with the engaging end portion 32d is formed substantially horizontally, and the biasing force of the leaf spring 35 causes the rotating member 3 to rotate.
Since it operates in two directions, the rotation of the rotating member 21 is reliably regulated until the counterclockwise rotation imparting force of the recording paper 11 reaches the predetermined imparting force, and the first paper ejection tray 23 is held at a position suitable for accumulating the recording paper 11.

When the recording paper 11 on the first discharge tray 23 exceeds a predetermined weight and the counterclockwise rotation imparting force due to the weight of the recording paper 11 exceeds the predetermined rotation imparting force, this rotation is performed. The leaf spring 35 is pushed in the direction opposite to the rotation member 32 by the motion imparting force, and the engagement end portion 32d of the rotation member 32 is released from the engagement with the engagement portion 35a of the leaf spring 35. 32 is
It rotates counterclockwise together with the first paper ejection tray 23.

At this time, the engaging end portion 32d of the rotating member 32 is
Is pushed by the inclined surface of the engaging portion 35 a of the leaf spring 35, and the first paper ejection tray 23 is swung in the counterclockwise direction together with the swiveling member 32.

By rotating the first paper discharge tray 23 in the counterclockwise direction, the plurality of recording papers 11 on the first paper discharge tray 23 are moved to the second recording paper 11 as in the case shown in FIG. Collectively drops onto the discharge tray 29.

When all the recording paper 11 on the first paper ejection tray 23 has fallen, the first paper ejection tray 23 and the rotating member 32.
Is rotated clockwise by the urging force of the spring 33, and the engaging end portion 32d of the rotating member 32 is moved to the first restricting member 3.
The rotation of the rotation member 21 stops at the position where the rotation member 21 comes into contact with the rotation member 4.

At this time, the engaging portion 35a of the leaf spring 35 is
Since the upper portion thereof is formed into a smooth inclined surface, the rotating member 32 resists the biasing force of the leaf spring 35 and the biasing force of the spring 33 causes the tilting surface of the engaging portion 35a of the leaf spring 35 to move. As the engaging end 32d of the rotating member 32 slides,
It swiftly rotates clockwise to the position regulated by the first regulating member 25.

The paper discharge tray device 30 repeats the above-described operation to place a predetermined number of the recording papers 11 discharged from the copying apparatus main body 10 on the first paper discharge tray 23, and then the second paper discharge tray 23. The trays 29 are collectively dropped.

Therefore, according to the present embodiment, the second restricting means for restricting the counterclockwise rotation of the rotating member 32 is formed by the leaf spring 35, which is different from the case of the first embodiment. The same effect can be obtained, the number of parts of the paper discharge tray device 30 can be reduced, and the size of the paper discharge tray device 30 can be reduced, so that the paper discharge tray device 30 can be made more inexpensive.

Also in this embodiment, when the first paper ejection tray 23 is not used, the first paper ejection tray 23 is not used.
Can be removed from the rotating member 32, and the installation space for the paper discharge tray device 30, and thus the copying apparatus 1, can be reduced.

6 to 9 are views showing a third embodiment of the paper discharge tray device of the present invention, and this embodiment is an embodiment corresponding to claim 6. In FIG.

Similar to the second embodiment, this embodiment is applied to a copying machine similar to the copying machine 1 of the first embodiment. The same reference numerals are given and the description thereof is omitted.

In FIG. 6, a paper discharge tray device 40 is a first paper discharge tray 41 in the copying apparatus main body 10 and a second paper discharge tray which is installed below the first paper discharge tray 41 and is similar to the above-described second paper discharge tray. A first paper ejection tray 4 having a paper tray 29 (not shown)
1 is rotatably supported directly on the copying apparatus main body 10 via a shaft 42 attached to the copying apparatus main body 10 near the base end thereof.

The first paper ejection tray 41 is bent in a substantially V shape at the shaft 42, and the base end portion of the first paper ejection tray 41 has a rounded tip. The engaging end portion 41a is formed.

The engaging end portion 41 of the first paper discharge tray 41
One end of the spring 43 is attached to the portion a, and the other end of the spring 43 is not shown in detail,
It is attached to the copying apparatus main body 10.

The spring 43 is used for the first paper discharge tray 41.
A predetermined amount of rotation imparting force for rotating the shaft clockwise about the shaft 42 is applied.

A first restricting member 44 is provided below the engaging end portion 41a of the first paper discharge tray 41.
The regulation member 44 is fixed to a swinging member 46 that is swingably attached to the copying apparatus main body 10 via a shaft 45.

The oscillating member 46 manually operates the first restricting member 44 so that the first restricting member 44 is positioned below the engaging end portion 41a of the first sheet discharge tray 41 shown in FIG. It is formed so as to be capable of swinging between a release position which is swung clockwise from the position and which is disengaged from below the engagement end portion 41a.

Therefore, the first restricting member 44 is the same as that shown in FIG.
When it is located at the regulating position of the lower portion of the engaging end portion 41a of the first paper ejection tray 41 shown in FIG. The rotation of the first paper ejection tray 41 is restricted and the first paper ejection tray 41 is allowed to rotate clockwise when the first paper ejection tray 41 is located at the release position which is deviated in the clockwise direction from the restricted position.

On the side of the engaging end portion 41a of the first sheet ejection tray 41, there is provided a second sheet having the same predetermined elastic force as that of the second embodiment.
A leaf spring (elastic body) 35 is disposed as a regulating means of the copying machine body 10 by fixing members 36a and 36b.
It is fixed to.

The copying apparatus main body 10 to which the leaf spring 35 is attached is formed with a space portion 10a which is recessed in the direction opposite to the first paper ejection tray 23.
It is pushed by the engaging end portion 41a of the sheet discharge tray 41 and can be bent in the direction of the space 10a.

The leaf spring 35 is formed with an engaging portion 35a projecting toward the first sheet ejection tray 41, and this engaging portion 35a is formed on the engaging end portion 41a of the first sheet ejection tray 41. Engagement restricts the first paper ejection tray 41 from rotating counterclockwise.

The lower end of the engaging portion 35a which engages with the engaging end 41a of the first paper discharge tray 41 is formed substantially horizontally, and the upper portion thereof is formed into a smooth inclined surface. There is.

The first restricting member 44 moves from the restricting position to the releasing position substantially below the shaft 42 that rotatably supports the first ejecting tray 41, and the first ejecting tray 41 moves. A holding member (holding means) that holds the leading end of the engaging end 41a, which is the base end of the first paper ejection tray 41, when it rotates clockwise and approaches the state of being substantially parallel to the copying apparatus main body 10. ) 4
Although not shown in detail, the holding member 47 is attached to the copying apparatus main body 10.

The holding member 47 has a wall portion 47a for restricting the clockwise rotation of the first paper discharge tray 41, and a recess portion 47b for holding the engaging end portion 41a of the first paper discharge tray 41.
And the wall portion 47a allows the first paper ejection tray 41
While restricting the clockwise rotation of the
The engaging end portion 41a of the first paper ejection tray 41 at the storage position.
Hold.

According to this embodiment, the first paper ejection tray 41
Recording paper 1 discharged from the copying apparatus main body 10 by using
1 is placed on the first paper ejection tray 41 as shown in FIG.
As shown in, the first regulating member 44 is set to the regulating position which is the lower position of the engaging end portion 41a of the first paper ejection tray 41.

In this state, the clockwise rotation of the first paper ejection tray 41 is restricted by the first lower end portion of the engaging end portion 41a of the first paper ejection tray 41 contacting the first paper ejection tray 41. It is regulated by the member 44 and its engaging end portion 41a
Is engaged with the engaging portion 35a of the leaf spring 35, its counterclockwise rotation is regulated by the engaging portion 35a of the leaf spring 35, and the recording paper 11 ejected from the paper ejection roller pair 13a, 13b. Is held in a position suitable for mounting.

In this state, the discharge roller pair 13a, 13b
The recording paper 11 is sequentially placed on the first paper ejection tray 41 from the top, and the gravity of the recording paper 11 placed on the first paper ejection tray 4 causes
Until the counterclockwise rotation imparting force acting on 1 reaches a predetermined rotation imparting force, the engaging portion 35a of the leaf spring 35 causes the first
The counterclockwise rotation of the paper discharge tray 41 is restricted.

At this time, since the lower end portion of the engaging portion 35a of the leaf spring 35 engaging with the engaging end portion 41a of the first paper discharge tray 41 is formed substantially horizontal, the recording paper 11 is used. Until the counterclockwise rotation imparting force reaches the predetermined imparting force, the rotation of the first paper ejection tray 41 is surely restricted, and the first paper ejection tray 41 accumulates the recording paper 11. Hold in place.

The recording paper 11 on the first paper ejection tray 41 exceeds a predetermined weight, and the weight of the recording paper 11 acts on the first paper ejection tray 41 so that the counterclockwise rotation imparting force is a predetermined time. When the motion imparting force is exceeded, the leaf spring 35 is pushed in the direction of the space portion 10a by this pivoting imparting force, and the engaging end portion 41a of the first paper ejection tray 41 becomes the engaging portion 35a of the leaf spring 35. After the engagement is released, the first paper ejection tray 41 rotates counterclockwise as shown in FIG.

By the counterclockwise rotation of the first paper ejection tray 41, the plurality of recording papers 11 on the first paper ejection tray 41 are moved to the second recording paper 11 as in the case shown in FIG. Collectively drops onto the discharge tray 29.

When all the recording papers 11 on the first paper ejection tray 41 have fallen, the first paper ejection tray 41 moves the spring 4
By the urging force of 3, the first discharge tray 41 is rotated in the clockwise direction, and the first discharge tray 41 is rotated at the position where the engaging end portion 41a of the first discharge tray 41 is in contact with the first regulating member 44. Stops.

At this time, since the upper portion of the engaging portion 35a of the leaf spring 35 is formed into a smooth inclined surface, the engaging end portion 41a of the first paper ejection tray 41 is subject to the biasing force of the leaf spring 35. On the contrary, the biasing force of the spring 43 causes the inclined surface of the engaging portion 35a of the leaf spring 35 to slide, and swiftly rotates clockwise to the position regulated by the first regulating member 44.

The paper discharge tray device 40 repeats the above-mentioned operation to place a predetermined number of the recording papers 11 discharged from the copying apparatus main body 10 on the first paper discharge tray 41, and then the second paper discharge tray 41. The trays 29 are collectively dropped.

Therefore, according to the present embodiment, the second restricting means for restricting the counterclockwise rotation of the first paper discharge tray 41 is formed by the plate spring 35, so that the first embodiment described above is adopted. The same effect as in the case of can be obtained,
Similar to the second embodiment, the paper discharge tray device 40 can be downsized with a small number of parts, and the paper discharge tray device 40 can be made more inexpensive.

When the first paper ejection tray 41 is not used, the paper ejection tray device 40 moves the swinging member 46 to which the first restriction member 44 is attached from the restriction position shown in FIGS. It swings to the release position shown, and the first paper discharge tray 41 is manually rotated clockwise.

When the first paper discharge tray 41 is rotated clockwise, the first paper output tray 41 changes from being in a state of protruding laterally from the copying apparatus main body 10 to being in a state of being substantially parallel to the copying apparatus main body 10, and its engaging end portion Rotation in the clockwise direction is restricted at a position where 41a abuts on the wall portion 47a of the holding member 47, and the recess 4 of the holding member 47 is formed.
It is held by 7b.

Therefore, when the first paper discharge tray 41 is not used, the first paper discharge tray 41 is rotated from the state in which it projects from the copying apparatus main body 10 to a state in which it is substantially parallel to the copying apparatus main body 10, and is held. It is possible to reduce the occupied space of the paper discharge tray device 40, prevent the first paper discharge tray 41 from getting in the way, and make the first paper discharge tray 41 removable. In this case, it is possible to prevent the removed first discharge tray 41 from being lost or dropped and damaged.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, in each of the above-mentioned embodiments, the second restricting means is the second restricting member 26, the guide member 27a,
27b and the spring 28 or the leaf spring 35, the present invention is not limited to these, and the recording paper 11 placed on the first paper discharge trays 23 and 41 is the first paper.
The first ejection trays 23 and 41 are regulated to the positions regulated by the first regulation member 25 until the rotation imparting force acting on the sheet ejection trays 23 and 41 reaches a predetermined imparting force.
If the rotation imparting force by 1 exceeds a predetermined imparting force, any one may be used as long as it can release the regulation of the rotation of the first paper discharge trays 23 and 41.

Further, in each of the above-mentioned embodiments, the box-shaped second discharge tray 29 installed on the floor of the copying apparatus main body 10 side is used, but the present invention is not limited to this. Any one may be used as long as it can store a large number of recording papers 11 falling in a bundle from the first paper ejection trays 23 and 41 in a state where it is easy to take them out.

[0135]

According to the paper ejection tray device of the first aspect of the present invention, the paper ejection tray device places the paper to be ejected in order in the paper ejection portion of the paper ejection device that ejects predetermined paper. The first paper ejection tray is attached so as to be rotatable around a predetermined fulcrum, and when the weight of the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is moved. By rotating downward, the sheets on the first sheet ejection tray are collectively dropped and placed on the second sheet ejection tray provided below the first sheet ejection tray. The paper ejection tray of No. 1 is urged upward by a predetermined urging force by the urging means, and
The first restricting means restricts the upward rotation of the biasing means at a position suitable for placing a sheet.

A predetermined amount of rotation load for restricting the rotation of the first paper discharge tray is applied to the first paper discharge tray by the second restricting means, and the first paper discharge tray is rotated by this rotation. The downward rotation of the sheet is restricted by the load until the downward rotation imparting force due to the weight of the placed paper reaches a predetermined imparting force, and the sheet rotational imparting force is the predetermined imparting force. When it exceeds, the restriction of the downward rotation is released.

Therefore, the first paper discharge tray is held at a position suitable for the sheets to be placed until the rotation imparting force due to the weight of the sheets to be sequentially placed reaches the predetermined imparting force. , When the rotation imparting force by the paper exceeds a predetermined imparting force,
By rotating downward, the plurality of sheets that have been placed are collectively dropped and placed on the second sheet ejection tray.

As a result, the first device attached to the paper discharge device
It is possible to place a large number of paper sheets on the second paper ejection tray in an easy-to-handle state without making the paper ejection tray or the paper ejection device itself to be strong enough to withstand the weight of a large number of paper sheets. The paper discharge tray device and thus the paper discharge device can be made inexpensive, and the discharged paper can be placed in a state that is easy to handle.

In this case, as described in claim 2, when the second restricting means pivots downward, the first discharge tray pivots upward by the biasing force of the biasing means. First
The rotational load applied to the paper ejection tray is at least as compared with the rotational load applied to the downward rotation of the first paper ejection tray due to the weight of the paper on the first paper ejection tray. If a rotational load smaller than 5% is applied, the sheets are placed on the first paper ejection tray until the rotational imparting force due to the weight of the sheets sequentially placed reaches a predetermined imparting force. It is possible to hold it at a position suitable for holding, and when the first discharge tray that has once rotated downward returns to the position where it is regulated by the first regulating means by the urging force of the urging means, Can be quickly returned.

Further, as described in claim 3, the second restricting means is engaged with the first discharge tray to restrict the rotation of the first discharge tray in the rotating direction. A regulation member that moves between a position and a release position that releases the regulation of the rotation of the first discharge tray in the rotation direction, and the regulation member that movably guides between the regulation position and the release position. A guide member and an urging member for urging the regulation member in the regulation position direction until the rotation imparting force of the sheet placed on the first sheet ejection tray reaches a predetermined imparting force. Then, the first discharge tray is more surely held at a position suitable for the sheets to be loaded until the rotation imparting force due to the weight of the sheets to be sequentially placed reaches a predetermined imparting force. It is possible to improve the loadability of the paper.

Further, as described in claim 4, the second
The regulation means has an engaging portion that engages with the first paper ejection tray, and the downward rotation imparting force of the sheet placed on the first paper ejection tray becomes a predetermined imparting force. Until the first engaging part
When the first discharge tray is formed of an elastic member, such as a leaf spring, which is pressed by a predetermined elastic force in the direction of the discharge tray and regulates the downward rotation of the first discharge tray, the second restricting means, The paper tray device can be made even smaller and less expensive.

Further, as described in claim 5, the first paper discharge tray is detachably attached to a rotary member rotatably mounted on the paper discharge device, and the rotary member is attached to the rotary member. The urging means urges the urging member upward by a predetermined urging force, and the first restricting means causes the urging member to rotate in the upward direction so that the first paper discharge tray mounted on the rotating member is a sheet. Is regulated at a position suitable for placing the sheet, and further, the second regulating means applies a predetermined amount of rotational load for regulating the rotation, and the sheet is placed on the first paper discharge tray. When the downward rotation is restricted until the downward rotation imparting force of the paper reaches the predetermined imparting force, and the rotation imparting force of the paper exceeds the predetermined imparting force,
When the restriction of the downward rotation is released, it is possible to reduce the cost of the discharge tray device that can place discharged sheets in a state that is easy to handle, and at the same time, it is possible to reduce the cost of the first tray. The discharge tray can be removed when not in use, and the storage space of the discharge tray device can be reduced.

According to the sixth aspect of the paper ejection tray device, the paper ejection tray device places the paper to be ejected in order on the paper ejection portion of the paper ejection device ejecting a predetermined paper. The first paper ejection tray is attached so as to be rotatable around a predetermined fulcrum, and when the weight of the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is lowered. Is rotated in the direction, and the sheets on the first paper ejection tray are collectively dropped and placed on the second paper ejection tray provided below the first paper ejection tray. The paper discharge tray is urged upward by a predetermined urging force by the urging means.
By the regulating means, the upward rotation by the urging means is regulated at a position suitable for placing the paper on the first discharge tray, and the first regulating means moves in the predetermined direction. By doing so, the regulation of the upward rotation is released.

Then, the second restricting means applies a predetermined amount of rotation load for restricting the rotation of the first sheet ejection tray to the first sheet ejection tray, so that the first sheet ejection tray is provided with a rotation load. The downward rotation of the first sheet ejection tray is regulated until the downward rotation imparting force of the first sheet ejection tray due to the weight of the placed sheet reaches a predetermined imparting force. When the rotation imparting force exceeds a predetermined imparting force, the regulation of the downward rotation of the first sheet ejection tray is released.

Further, when the regulation of the upward rotation of the first paper ejection tray by the first regulating means is released, the holding means removes the first paper ejection tray pivoted upward. The paper is held at a predetermined close position to the paper discharge device.

Therefore, the first paper discharge tray is held at a position suitable for the sheets to be loaded until the rotation imparting force due to the weight of the sheets to be sequentially placed reaches the predetermined imparting force. , When the rotation imparting force by the paper exceeds a predetermined imparting force,
By rotating downward, a plurality of sheets that have been placed can be collectively dropped and placed on the second sheet ejection tray.

Then, when the first paper discharge tray is not used, the second regulating means is moved to rotate the first paper discharge tray upward to a predetermined position close to the paper discharge device. And can be held by the third restricting means.

As a result, the first device attached to the paper discharge device
It is possible to place a large number of paper sheets on the second paper ejection tray in an easy-to-handle state without making the paper ejection tray or the paper ejection device itself strong enough to bear the weight of a large number of paper sheets. The paper ejection tray device can be made inexpensive, and the paper ejection tray device when the first paper ejection tray is not used, and consequently, the installation space of the paper ejection device can be reduced, and the first paper ejection device It is possible to prevent the first paper discharge tray from being lost or damaged due to the removal of the tray.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of a copying apparatus main body and a paper discharge tray device of a copying machine to which a first embodiment of a paper discharge tray device of the present invention is applied.

FIG. 2 is an enlarged side view of a main part of the paper ejection tray device of FIG.

FIG. 3 is a state in which the first paper ejection tray of the paper ejection tray device of FIG. 1 is rotated counterclockwise, and the recording sheets that have been placed are collectively dropped onto the second paper ejection tray. FIG.

FIG. 4 is a cross-sectional side view of the second paper discharge tray in a state where a plurality of sheets of recording paper are collectively collected and dropped from the first paper discharge tray.

FIG. 5 is an enlarged side view of an essential part of a paper ejection tray device of a copying machine to which a second embodiment of the paper ejection tray device of the present invention is applied.

FIG. 6 is an enlarged side view of a main part of a paper ejection tray device of a copying machine to which a third embodiment of the paper ejection tray device of the present invention is applied.

FIG. 7 is an enlarged side view of essential parts of the paper discharge tray device showing a state in which the first paper discharge tray of FIG. 6 has started rotating counterclockwise.

FIG. 8 is an enlarged side view of the essential parts of the paper ejection tray device showing a state in which the first paper ejection tray of FIG. 7 is further rotated counterclockwise and the placed recording papers are collectively dropped.

9 is an enlarged side view of essential parts of the paper discharge tray device showing a state where the first paper discharge tray of FIG. 6 is rotated clockwise and held by a holding member.

[Explanation of symbols]

 1 Copying device 10 Copying device main body 11 Recording paper 12 Guide plate 13 Paper discharging roller pair 20, 30, 40 Paper discharging tray device 21, 32 Rotating member 21a, 21b, 32a, 32b Arm 21c, 32c Claw part 21d, 21e Inclination Surface 22, 31, 42, 45 Shaft 23, 41 First paper discharge tray 23a Claw portion 24, 28, 33, 43 Spring 25, 34 First restriction member 26, 44 Second restriction member 26a Sloping surface 26b Guide Holes 27a, 27b Guide members 32d, 41a Engaging end portions 35 Leaf springs 35a Engaging portions 46 Swing members 47 Holding members

Claims (6)

[Claims] 1. A first sheet on which the sheets to be sequentially discharged are placed in a sheet discharging unit of a sheet discharging device for discharging a predetermined sheet.
Is attached so as to be rotatable around a predetermined fulcrum, and when the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is moved downward. Is rotated in the direction, and the sheets on the first sheet ejection tray are collectively dropped and placed on a second sheet ejection tray provided below the first sheet ejection tray. In the paper tray device, the urging means urges the first paper ejection tray upward with a predetermined urging force, and the first restricting means urges the first paper ejection tray by the urging means. Rotation of the paper tray in the upward direction is regulated at a position suitable for the first paper ejection tray to place the paper thereon, and second regulation means is arranged on the first paper ejection tray to move the first paper ejection tray to the first paper ejection tray. A predetermined amount of rotation load for restricting rotation of the first sheet discharge tray is applied, and the sheet is placed on the first sheet discharge tray. The downward rotation of the first sheet discharge tray is regulated until the downward rotation imparting force of the first sheet discharge tray due to the weight of A sheet ejection tray device, wherein when the motion imparting force exceeds the predetermined imparting force, the restriction of downward rotation of the first sheet ejection tray is released. 2. The second discharging means is configured to discharge the first paper discharge tray when the first paper discharge tray once rotated downward is rotated upward due to the urging force of the urging means. As the rotational load applied to the tray, as compared with the rotational load applied to the downward rotation of the first paper ejection tray due to the weight of the paper on the first paper ejection tray,
The sheet ejection tray device according to claim 1, wherein a rotational load that is at least 5% or less is applied. 3. The second restricting means engages with the first paper discharge tray and restricts rotation of the first paper discharge tray in the rotation direction, and the first restricting position.
Regulating member that moves between a release position that releases the regulation of the rotation of the paper ejection tray in the rotation direction, and guides the regulating member so as to be movable between the regulation position and the release position. A guide member, and a biasing member that biases the regulation member in the regulation position direction until the rotation imparting force of the sheet placed on the first sheet ejection tray reaches a predetermined imparting force. The discharge tray device according to claim 1 or 2, further comprising: 4. The second restricting means has an engaging portion that engages with the first paper ejection tray, and the second downward direction by the paper placed on the first paper ejection tray. The engaging portion is pressed in the direction of the first sheet discharge tray with a predetermined elastic force until the rotation applying force of the
3. The paper ejection tray device according to claim 1, wherein the paper ejection tray device is formed of an elastic member that restricts downward rotation of the first paper ejection tray. 5. The first paper discharge tray is detachably mounted on a rotary member rotatably mounted on the paper discharge device, and the rotary member is upwardly moved by the urging means. Is urged by a predetermined urging force to rotate upward by the urging means by the first restricting means, and the first paper discharge tray mounted on the rotating member loads the paper. It is regulated at a position suitable for placement, and a predetermined amount of rotation load for regulating the rotation is applied by the second regulation means and placed on the first paper discharge tray. When the downward rotation is restricted until the downward rotation imparting force of the sheet reaches a predetermined imparting force, and the rotation imparting force of the sheet exceeds the prescribed imparting force,
The discharge tray device according to any one of claims 1 to 4, wherein the restriction of the downward rotation is released. 6. A first sheet on which the sheets to be sequentially discharged are placed in a sheet discharging section of a sheet discharging device that discharges a predetermined sheet.
Is attached so as to be rotatable around a predetermined fulcrum, and when the paper placed on the first paper ejection tray exceeds a predetermined weight, the first paper ejection tray is moved downward. Is rotated in the direction, and the sheets on the first sheet ejection tray are collectively dropped and placed on a second sheet ejection tray provided below the first sheet ejection tray. In the paper tray device, an urging unit urges the first paper discharge tray in the upward direction with a predetermined urging force, and a first restricting unit causes the urging unit to move the upward direction. The rotation of the first paper ejection tray is restricted at a position suitable for the first paper ejection tray to load the paper, and the first paper ejection tray is moved in a predetermined direction to move the first paper ejection tray above the first paper ejection tray. The regulation of the rotation in the direction is released, and the second regulation unit causes the first paper ejection tray to rotate the first paper ejection tray. A predetermined amount of rotation load for restricting the rotation is applied, and a downward rotation imparting force of the first paper ejection tray due to the weight of the sheets placed on the first paper ejection tray is predetermined. When the rotation imparting force of the sheet exceeds the predetermined imparting force, the downward rotation of the first sheet ejection tray is restricted until the imparting force becomes When the restriction of the downward rotation is released and the restriction of the upward rotation of the first paper discharge tray by the first restriction means is released, the holding means rotates upward. A paper ejection tray device, wherein the ejected first paper ejection tray is held at a position close to the paper ejection device by a predetermined distance.