JP2553685Y2 - Door opening and closing structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply device for accommodating a paper supply tray used in a printer or a copying machine, and more particularly to an opening and closing structure of a door for opening and closing a paper supply tray insertion opening of the supply device. .

[0002]

2. Description of the Related Art Generally, a door opening / closing structure of this type includes a paper supply tray on which an upper surface is opened and a large number of papers are stacked and placed;
A supply device having an opening on the front surface for housing the paper supply tray therein, and a door rotatably supported on one side by the opening of the supply device and opening and closing the opening, A paper supply tray is stored in the supply device, and paper is supplied from the supply device to a printer device or the like of the main body. When the paper in the paper supply tray becomes insufficient, the paper is removed from the supply device to supply the paper. Further, when a failure such as a paper jam occurs in the supply device, the door is opened to eliminate the failure.

[0003]

However, in the above-described conventional door opening / closing structure, the front surface of the sheet supply tray and the surface of the door are made the same in order to easily remove the sheet supply tray stored in the supply device. When the door is opened while the paper supply tray is stored in the supply device, the inner wall of the insertion slot of the door comes into contact with the paper supply tray and the inner wall of the door is damaged. was there.

Accordingly, the present invention has been made in view of the above-mentioned conventional inconveniences, and a purpose thereof is to prevent the door from being opened when the user forgets to remove the paper supply tray. Accordingly, an object of the present invention is to provide a door opening / closing structure in which the door is prevented from being damaged during opening / closing.

[0005]

In order to achieve this object, a door opening and closing structure according to the present invention comprises a box-shaped paper supply tray for supplying paper, and the paper supply tray housed in an internal storage chamber. A supply unit having an opening for opening the paper supply tray, and one side of the supply unit is swingably supported by the opening of the supply unit so that the opening can be opened and closed, and the paper supply tray is placed in a storage chamber of the supply unit. A door having an insertion opening for insertion and extraction, an operation lever disposed on the door and capable of opening and closing the door by engaging and disengaging an engagement portion provided on the supply device, and The operation lever is configured by a paper supply tray accommodated in the supply device and includes a lock lever that holds the engagement between the operation lever and the engagement portion.

[0006]

In the present invention, when the paper supply tray is stored in the supply device, the operation lever provided on the door is engaged with the engagement pin in the supply device, and the door is opened. Block.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a door opening and closing structure according to the present invention,
FIG. 2 is a plan view of a main part showing an operation state. FIG. 2A is a state diagram in which a sheet supply tray is not stored in a supply device.
FIG. 3B is a diagram illustrating a state in which the sheet supply tray is stored in the supply device. In these figures, what is indicated by reference numeral 2 is
This is a supply device which is provided in a printer device or the like and supplies sheets one by one. A storage chamber 3 for storing a paper supply tray 20 described later is provided therein, and a front side of the storage chamber 3 has an opening 3a. A guide surface 4 is formed on both sides (the right side is not shown). The guide surface 4 comes into sliding contact with an outer surface portion 20a of a sheet supply tray 20 having a window 4a formed therein. A hollow portion 6 is formed between the portion 5. A concave portion 5a is provided in the center of the front part of the side surface portion 5, and a window 5b communicating with the hollow portion 6 is formed in the concave portion 5a.

The opening 3a of the supply device 2 is provided with a door 10 which is swingably supported on the right side of the opening 3a and which can open and close the opening 3a from the left side.
On the front surface of the door 10, an insertion port 11 having substantially the same shape as the cross-sectional shape of the paper supply tray 20 is provided. Door 10
A substantially inverted L-shaped engagement lever 13 is swingably supported on a shaft 15 implanted in the door 10 on the inside of the left side of the engagement lever 13. An operating portion 13a located in the concave portion 5a is integrally formed, an engaging pin 13b is implanted at the other end, and an engaging portion which engages with the pin 17 implanted in the hollow portion is provided slightly below the operating portion 13a. The lever 13 is provided with a swinging behavior in the clockwise direction in FIG. 2, that is, in the direction in which the engaging portion 13 c engages with the pin 17 by the torsion coil spring 16 fitted on the shaft 15. Have been.

The paper supply tray 20 has a box shape with an open top, and papers 21 are placed in a stacked state. A substantially V-shaped lock lever 25 is provided in the hollow portion 6.
The lock lever 25 is pivotally supported by a shaft 28 implanted in the hollow portion 6, and a roller 26 facing the window 4 a is rotatably supported at one end of the lock lever 25, and is rotatably supported at the other end. An engaging portion 25a is provided for engaging the pin 13b. The lock lever 25 is provided with a torsion coil spring 29 fitted on a shaft 28 and having one end engaged with a pin 30 implanted in the hollow portion 6. 2, the swinging behavior is imparted in the clockwise direction in FIG. 2, that is, the direction in which the roller 26 protrudes into the storage chamber 3 from the window 4a.

The door opening / closing structure of the present invention has the above-described structure, and the operation will be described below. First, the door 10
Is closed. In this state, as shown in FIG. 2A, the engagement portion 13c of the engagement lever 13 is
, And keeps the door 10 closed.
Next, in order to feed paper from the paper feeding device 2 to a printer device (not shown), the paper supply tray 20 is stored in the storage room 3 through the insertion opening 11. At this time, the side surface portion 20a of the tray 20 comes into contact with the roller 26, and the lock lever 25 is turned counterclockwise against the urging force of the torsion coil spring 29, as shown in FIG. The engaging portion 25a is
b to regulate the swing of the engagement lever 13.

Therefore, in this state, the door 10
When the operation portion 13a of the engagement lever 13 is rotated in the counterclockwise direction to open the opening, the engagement between the engagement portion 13c and the pin 17 can be released because the swing is restricted. No, the door 10 cannot be opened after all. In other words, the door 10 cannot be opened in a state where the paper supply tray 20 is inserted into the storage chamber 3, so that the insertion opening 11 of the door 10 is not damaged by the tray 20 beforehand. Can be prevented.

Before opening the door, the storage room 3
The paper supply tray 20 is removed from the printer. Thereby, the lock lever 25 swings clockwise, the engagement between the engagement portion 25a and the pin 13b is released, and the engagement lever 13 can swing freely. In this state, by rotating the operation portion 13a counterclockwise, the engagement between the engagement portion 13c and the pin 17 is released, and the door 13 can be opened and closed.

[0013]

According to the present invention, as described above, according to the present invention, there is provided an operating lever which is disposed on a door and which can be opened and closed by engaging and disengaging an engaging portion provided on a supply device. A lock lever that is operated by the paper supply tray stored in the supply device and holds the engagement between the operation lever and the engagement portion, and the door is opened while the paper supply tray is stored in the supply device. This prevents the door from being accidentally opened while the paper reinforcement tray is being stored.
For this reason, an accident that the door is damaged by the tray is eliminated.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a door opening and closing structure according to the present invention.

FIGS. 2A and 2B are main part plan sectional views showing an operation state of a door opening / closing structure according to the present invention, wherein FIG. 2A is a state diagram in which a paper supply tray is not stored in a supply device, and FIG. FIG. 4 is a diagram showing a state in which is stored in the supply device.

[Explanation of symbols]

 Reference Signs List 2 feeding device 3 storage room 10 door 11 insertion slot 13 engagement lever 20 paper supply tray 25 lock lever

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroyasu Inoue 5-7-1 Shiba, Minato-ku, Tokyo Inside NEC Corporation (72) Inventor Hirosaku Kitahara 3-49-1 Kamiishihara, Chofu-shi, Tokyo NEC Data Equipment Co., Ltd.

Claims (1)

(57) [Scope of request for utility model registration] 1. A box-shaped paper supply tray for supplying paper, a supply device having an opening for accommodating the paper supply tray in an internal storage chamber, and one side portion of the opening of the supply device. A door having an insertion port that is swingably supported so that the opening can be opened and closed and that inserts and removes the paper supply tray into and from the storage chamber of the supply device; An operation lever that engages and disengages the engagement portion provided to enable opening and closing of the door, and is operated by a paper supply tray housed in the supply device and is configured to engage the operation lever with the engagement portion. A door opening / closing structure comprising a lock lever for holding the door.