JPH10167547A - Sheet loading tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detach an auxiliary tray without breaking it by constituting a hinge part of a projecting part becoming a rotation shaft and a bearing part for rotatably supporting the projecting part and forming the projecting part of an elastic member. SOLUTION: A recessed part 7a is a part of a record paper discharge tray part 7 and can store an auxiliary tray 8. 7b are hole parts formed in rear side ends in the both inner side faces of the recessed part 7a and 8a are projections formed of an elastic body in one ends in the both side faces of the auxiliary tray 8. A hinge part, 11 is constituted of the hole parts 7b, 7b and projections 8a, 8a and the projections 8a, 8a are fitted in the hole parts 7b, 7b so that the end part of the auxiliary tray 8 is rotationally moved as drawing an arc about the projections 8a, 8a as a shaft. When an impact load or a load of a withstand load or more is applied on the auxiliary tray 8, the projections 8a, 8a are just shifted from the holes 7b, 7b by the elastic deformation of the projections 8a, 8a so that the projections 8a, 8a themselves can be returned to their original states without any breakage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stack tray applied to a facsimile machine, a copying machine, a printer, and the like.

[0002]

2. Description of the Related Art Conventionally, this kind of technology has been disclosed in
There is a sheet material mounting table described in Japanese Patent Publication No. 1216. According to this publication, the auxiliary tray is hinged to the rear side of the sheet mounting table so as to be rotatable, and the sheet is mounted with the auxiliary tray closed, or the auxiliary tray is opened and expanded. In addition to the configuration in which the sheet material can be switched, the configuration in which the hinge fitting portion has a long hole shape in order to eliminate floating of the auxiliary tray is disclosed.

[0003]

In the conventional sheet stacking tray for stacking sheet materials as described above,
When a long size exceeding the size of the tray is to be stacked, the sheet material can be stably held by using a rotatable auxiliary tray and fixing it at a position protruding from the tray. The hinge portion, which is a rotation fulcrum of the auxiliary tray, usually has a projection and is configured to be fitted into a hole formed in a mating member.

[0004] However, since the projection of the hinge receives a load or a moment, it is likely to be damaged when an impact load or the like is applied, resulting in replacement of parts.

The present invention solves such a problem. When an impact load or a load exceeding the withstand load is applied, the fitting of the hinge connection portion between the sheet loading tray and the auxiliary tray is released, It is an object to provide a sheet stacking tray that can be removed without damaging an auxiliary tray.

[0006]

According to the present invention, there is provided a sheet material stacking portion for stacking sheet materials, an auxiliary tray portion attached to the sheet material stacking portion, the sheet material stacking portion and the auxiliary member. A sheet stacking tray comprising a hinge portion rotatably connecting the tray portion and the auxiliary tray portion, wherein the hinge portion is rotated by rotating the auxiliary tray portion. It is characterized by comprising a projection serving as a driving shaft and a bearing for rotatably supporting the projection, wherein the projection is formed of an elastic body. With this configuration, even if an impact load or a load greater than the withstand load is applied to the auxiliary tray portion, the projection portion is elastically deformed and the auxiliary tray portion is detached, but the projection portion is not damaged and is restored to its original state. To restore.

A sheet material stacking portion for stacking the sheet material, an auxiliary tray portion attached to the sheet material stacking portion, and a hinge portion rotatably connecting the sheet material stacking portion and the auxiliary tray portion; In the sheet stacking tray capable of expanding the total length of stackable sheet materials by rotating the auxiliary tray portion, the hinge portion is configured such that a protrusion serving as a rotation axis and the protrusion are rotatable. And a bearing portion to be supported, and further, the tip of the projection is formed in a hemispherical shape, and the bearing is formed in a hemispherical concave shape, and the tip of the projection is fitted to the bearing. It is characterized by. Further, the projection is formed of an elastic body. With such a configuration, when an impact load or a load more than the withstand load is applied to the auxiliary tray, the load applied to the protrusion from the direction perpendicular to the rotation axis is reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sheet stacking tray according to the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing the inside of a facsimile apparatus provided with a sheet stacking tray according to a first embodiment of the present invention. Reference numeral 1 denotes a main body of the facsimile apparatus, and 2 denotes an optical image of a conveyed document. An image reading unit 3 for reading an image read by the image reading unit 2 or an image inputted from the outside on a recording paper in an electrophotographic system; A sheet feeder 5 for feeding the originals one by one; a document tray 5 for holding originals to be set in the image reading unit 2;
Document ejection tray for stacking documents ejected from the printer, 7
Is a recording paper discharge tray section formed on an upper portion of the main body 1 and stacking recording paper discharged from a recording paper discharge roller 10 after an image is recorded. 4 shows an auxiliary tray that is rotatably installed. The auxiliary tray 8 is integrated with the main body 1 in a closed state, and protrudes from the main body 1 in a closed state.

The facsimile apparatus generally has a configuration in which an image recording unit 3 is installed on a paper feeding unit 4 and an image reading unit 2 is installed on the image recording unit 3. For convenience of explanation,
In FIG. 1, the left side is described as a front side or a front part, and the right side is described as a rear side or a rear part. That is, the document set on the document tray 5 is turned to be conveyed to the rear side after being conveyed to the front side, and is discharged to the document discharge tray 6 after the image is read. The recording paper of the paper feeding unit 4 is conveyed to the front upper side, and after the image is recorded by the image recording unit 3, the recording paper is discharged rearward by the recording paper discharge roller 10.
The recording paper is stacked on the paper discharge tray section 7.

FIG. 2 is a perspective view showing the configuration and mounting structure of the auxiliary tray. Reference numeral 7a denotes a recess formed as a part of the recording paper discharge tray section 7 and extending over the upper and rear portions of the main body 1. The recess 7a is large enough to accommodate the auxiliary tray 8. 7b is a hole formed at the rear end of the inner side surface of the concave portion 7a, and 8a is an auxiliary tray 8a.
2 shows projections formed by an elastic body at one end of both side surfaces of FIG. The hinge portion 11 is formed by the holes 7b, 7b and the projections 8a, 8a.
The protrusions 8a, 8a are fitted into the holes 7b, 7b, so that the other end of the auxiliary tray 8 rotates in an arc around the protrusions 8a, 8a.

The projections 8a, 8a can be attached to the main body of the auxiliary tray 8 by any means such as heat caulking, press-fitting, and bonding. Further, it may be formed integrally with the auxiliary tray 8. Further, as the material of the projections 8a, 8a, a material having fatigue resistance, such as polypropylene or hard rubber, is applied.

With such a configuration, even if a load exceeding the impact load or the withstand load is applied to the auxiliary tray 8, the protrusion 8
The protrusions 8a, 8a are simply detached from the holes 7b, 7b by the elastic deformation of the protrusions 8a, 8a, and the protrusions 8a, 8a themselves are not damaged and are restored to the original state. Further, the auxiliary tray 8 can be easily attached.

FIG. 3 is a rear view showing the structure of the auxiliary tray according to the second embodiment of the present invention, wherein 20a is a projection, 21a is a hole, and 22 is projections 20a, 20a and holes 21a, 21a. 3 shows a hinge portion. In the second embodiment, a hinge part 22 is formed instead of the hinge part 11 in the first embodiment shown in FIG. The protrusions 20a, 20a are the protrusions 8a,
The tip of 8a is formed in a hemispherical shape.
a is formed in a hemispherical shape corresponding to the projections 20a, 20a. At this time, the hole portions 21a, 21a and the projections 20a, 20a are set to have such a sphere radius as to be press-fitted. For example, the hole
The diameter of the projections 20a, 20a is set to be larger than the diameter of 21a, 21a.

With such a configuration, even if a load greater than an impact load or a withstand load is applied to the auxiliary tray 8, the protrusion 20
Since the load applied to the a and 20a from the direction perpendicular to the rotation axis is reduced, it is possible to prevent the protrusions 20a and 20a from being damaged. Further, the auxiliary tray 8 can be easily attached.

Note that the projections 20a, 20a of the second embodiment are
You may comprise an elastic body like embodiment. Further, in the present embodiment, the auxiliary tray 8 is provided at the rear of the recording paper discharge tray 7, but the present invention is not limited to this. For example, a sheet member such as the document tray 5 or the document discharge tray 6 is placed thereon. As in the present embodiment, an auxiliary tray may be provided for the member to be formed, in which the protrusion at the hinge portion is formed of an elastic body.

[0017]

According to the present invention constructed as described above, even if a shock or a load greater than the withstand load is applied to the auxiliary tray, the projections are elastically deformed and the auxiliary tray is detached. Since the projection is restored to the original state without being damaged, the auxiliary tray can be easily attached to the original position again.

Further, when an impact or a load exceeding the withstand load is applied to the auxiliary tray, the load applied to the projection from the direction perpendicular to the rotation axis is reduced, so that the projection is prevented from being damaged. When the auxiliary tray is detached, the auxiliary tray can be easily attached to the original position again.

[Brief description of the drawings]

FIG. 1 is a side view showing the inside of a facsimile apparatus provided with a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration and a mounting structure of an auxiliary tray.

FIG. 3 is a rear view illustrating a configuration of an auxiliary tray according to a second embodiment of the present invention.

[Explanation of symbols]

1: Body, 5: Document tray, 6: Document ejection tray,
7: recording paper discharge tray section, 7a: recess, 7b, 21a
... Hole, 8 ... Auxiliary tray, 8a, 20a ... Protrusion, 10 ... Recording paper discharge roller, 11,22 ... Hinge.

Claims (3)

[Claims] 1. A sheet material stacking portion for stacking a sheet material, an auxiliary tray portion attached to the sheet material stacking portion, and a hinge portion rotatably connecting the sheet material stacking portion and the auxiliary tray portion, In the sheet stacking tray in which the total length of the stackable sheet material can be enlarged by rotating the auxiliary tray portion, a projection serving as a rotation axis of the hinge portion and the projection portion are rotatably supported. A sheet stacking tray, comprising: a bearing portion; and a protrusion formed of an elastic body. 2. A sheet material stacking portion for stacking sheet materials, an auxiliary tray portion attached to the sheet material stacking portion, and a hinge portion rotatably connecting the sheet material stacking portion and the auxiliary tray portion, In the sheet stacking tray in which the total length of the stackable sheet material can be enlarged by rotating the auxiliary tray portion, a projection serving as a rotation axis of the hinge portion and the projection portion are rotatably supported. And the tip of the projection is formed in a hemispherical shape, and the bearing is formed in a hemispherical concave shape, and the tip of the projection is fitted to the bearing. Characteristic sheet loading tray. 3. The sheet stacking tray according to claim 2, wherein the protrusion is formed of an elastic body.