JPH0443889Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a portable copying machine that can be carried around.

(Prior Art) With the miniaturization of electrophotographic copying machines and the like in recent years, portable copying machines that can be moved or stored in any location have been provided. This portable copying machine is known to have a handle attached to one side of its housing for carrying the copying machine (for example, see Japanese Utility Model Application Publication No. 140064/1983).

When not in use, such a portable copying machine is stored, for example, in a vertical position, with the paper feed opening provided with a handle facing upward and the paper ejection opening facing downward. This helped save space. However, especially in the above-mentioned vertical position, there is a risk that foreign matter such as dust may enter the copying machine through the paper feed opening facing upward, causing some sort of trouble during the next use. For this reason, a portable copying machine has been proposed that is provided with a cover that closes the opening when not in use.

However, it is necessary to open and close the cover each time the portable copying machine is used or not, which is time-consuming, and there is a risk of forgetting to put the cover on when storing the portable copying machine when not in use. . Therefore, there has been a demand for a portable copying machine in which the opening is automatically closed when the portable copying machine is stored vertically when the portable copying machine is not in use.

(Purpose of the invention) In view of the above-mentioned circumstances, the present invention is capable of automatically opening or closing the paper feed opening or paper ejection opening when in use or when not in use. It is an object of the present invention to provide a portable copying machine that can prevent foreign matter such as dust from entering through the opening.

(Structure of the invention) The present invention provides a portable copying machine in which a paper feed opening is provided on one side of the housing in a horizontal position, and a paper ejection opening is provided on the other side. A shielding member is provided at the opening or the paper ejection opening, and this shielding member is supported so as to be freely rotatable around a horizontal axis at a position where the other side is heavier than the other side. In a vertical position in which the member is positioned so that the opening is open and the opening provided with the shielding member faces upward, the shielding member is positioned so that the shielding member is blocking the opening. This is a portable copying machine configured such that members are arranged.

According to this configuration, when the shielding member is used in a horizontal position, the other side of the shielding member is heavier than the center of rotation.
As the shield rotates, one side of the shield rises above the opening, and the opening is automatically set to the open state.On the other hand, when not in use, if placed in a vertical position, gravity will cause the shield to close. The opening is automatically closed by the shielding plate. Therefore, foreign matter such as dust is prevented from entering the portable copying machine, and good copies can always be made when reusing the machine.

(Example) Embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a shielding member 2 inside a paper feed opening 1a as an embodiment of the portable copying machine of the present invention.
A partially cutaway front view of the device is shown. Inside the housing 3 of this portable copying machine, a photosensitive drum 4 is rotatably provided, and around the photosensitive drum 4, a charging device 5 as an image forming means, a developing device 6, and a cleaning device 7 are installed. It is arranged. A document placing table 8 is provided on the upper surface of the housing 3.
An optical system lamp 9 and a condensing lens 10 are provided between the photosensitive drum 4 and the exposed original image placed on the document mounting table 8 onto the photosensitive drum 4. exposed to light. Photosensitive drum 4
A transfer device 11 is provided below, and copies are transported from a paper feed opening 1a formed on one side of the housing 3 (on the right side in the figure) via a paper feed roller 12a, a transport path 12b, etc. It is configured to transfer the image on the photosensitive drum 4 onto paper, and the copy paper after transfer is sent to the fixing device 14 via the conveyor belt 13a, and the copy paper after fixing is transferred to the other side of the housing 3. The paper is configured to be ejected from a paper ejection opening 1b formed on the left side in the figure via a paper ejection roller 13b.

A handle 31 is provided on the side surface of the housing 3 where the paper feed opening 1a is provided.
It is arranged so that it can be transported in a suspended state vertically with the paper discharge opening 1b facing downward.

As shown in FIG. 1, a shielding member 2 is provided inside the housing 3 on the paper feeding opening 1a side so that it can be opened and closed. This shielding member 2 includes a shielding plate 21, an arm portion 22, and a weight portion 23.
As shown in FIGS. 1 and 2, a shield plate 21 is provided on the front end side of the arm portion 22 with respect to the paper feed opening 1a, and a weight portion 23 is provided on the rear end side. ing. The shielding plate 21 is a slightly curved plate that is larger than the paper feed opening 1a, and is provided so that the arm portion 22 and the shielding plate 21 form a substantially L-shape when viewed from the side. The weight part 23 is the arm part 2
It is formed by enlarging the cross section of the rear end portion of 2. These shielding plates 21, arm portions 22,
The weight portions 23 are set to have equal widths that are larger than the width of the paper feed opening 1a in the left-right direction (depth direction in FIG. 1), and are integrally formed of, for example, synthetic resin.

A support shaft 24 is provided in the intermediate portion of the arm portion 22 connecting the shielding plate 21 and the weight portion 23 so as to protrude to both the left and right sides, and the support shaft 24 is supported by the housing 3 so as to be freely rotatable around a horizontal axis. There is. This spindle 2
4 is the front side (one side) of the support shaft 24, that is, the rear side (the other side) of the support shaft 24 from the total weight of the shielding plate 21 and the front part of the arm part 22, that is, the weight part 23 and the arm part 22 and the rear part is located at a position where the total weight is heavier. As a result, the shielding member 2 rotates around the horizontal axis around the support shaft 24 due to the action of gravity, and the direction of rotation is as follows.
The weight portion 23 is always provided in a vertically hanging position with respect to the support shaft 24.

Here, even if it is not specially provided as a weight part 23 at the end of the arm part 22, the weight of the arm part 22 on the rear side of the support shaft 24 will be larger than the total weight of the front side of the support shaft 24. The length of the arm and the position of the support shaft may be set as follows. In this way, the shielding member of the present invention also includes a case where the weight portion is constituted by a part of the arm portion.

Furthermore, a stopper member 15 is provided on the rear side of the shielding member 2, as shown in FIGS. 1 and 2. This stopper member 15 is connected to the weight portion 2
two stoppers 151a and 151b that abut the weight part 23 at the top and bottom along the rotation locus of No. 3, and an arc-shaped connecting piece 15 that connects these stoppers.
It is composed of 2.

As shown in FIG. 1, the lower stopper 151b is used when the portable copying machine is placed horizontally.
When the shielding member 2 is rotated counterclockwise around the support shaft 24 by the weight portion 23 and the weight portion 23 comes into contact with the lower stopper 151b, the lower edge of the shielding plate 21 is rotated counterclockwise around the support shaft 24. It is placed in such a position that it stops at at least the same vertical position as the upper edge of.

The upper stopper 151a is used when the portable copying machine is in the vertical position, as shown in FIG.
When the shielding plate 2 rotates clockwise and the weight portion 23 comes into contact with the upper stopper 151a, the lower edge of the shielding plate 21 comes into contact with the lower edge of the paper feed opening 1a, and the upper edge is placed in such a position that it comes into contact with and stops at the upper edge of the paper feed opening 1a.

These two upper and lower stoppers 151a, 1
51b determines the rotation stop position of the shielding member 2, which can set the paper feed opening 1a in the open state and the closed state, as shown by the solid line and the dashed-dot line in FIG. 2, and also determines the rotatable range. regulated.

Note that, as in the present embodiment shown in FIG.
The upper stopper 151a can be omitted if it is provided so as to directly contact the lower edge of the a. Further, when the lower edge of the shielding plate 21 is located at the same vertical position as the upper edge of the paper feed opening 1a in the horizontal position shown in FIG. The lower stopper 151b can also be omitted if the shielding member 2 and the partition wall of the housing 3 are arranged in such a positional relationship that they abut against the partition wall or the like.

Next, a procedure for storing the portable copying machine having the above configuration when not in use will be explained.

When using a portable copying machine, the portable copying machine is set in a horizontal position as shown in FIG. Therefore, since the shielding member 2 is heavier on the side where the weight portion 23 is provided, it rotates counterclockwise around the support shaft 24, and as a result, the shielding plate 21 of the shielding member 2 opens into the paper feed opening. The paper feeding opening 1a is located above the upper edge of the paper feed opening 1a, so that the paper feeding opening 1a is automatically opened. When using this portable copying machine, a paper feed cassette 32a is provided in the paper feed opening 1a, and a paper discharge tray 32b is provided in the paper discharge opening 1b.

When the use of the portable copying machine is finished, the paper feed cassette 32a and the paper discharge tray 32b are removed, and the handle 31 provided on the side surface of the housing 3 on the side of the paper feed opening 1a is grasped and lifted. As a result, the portable copying machine is suspended in a vertical position with the paper feed opening 1a facing upward and the paper discharge opening 1b facing downward. This portable copying machine can be transported to a predetermined storage location and placed vertically in that position with the paper ejection opening 1b facing downward, as shown in FIG. 3, in the same position as when it was transported.

At this time, due to the action of gravity, a rotational force is generated in the shielding member 2 in the direction in which the weight portion 23 tries to maintain a vertical posture with respect to the support shaft 24, and the shielding member 2 is rotated until the weight portion 23 comes into contact with the stopper 151a. rotates. As a result, as shown in FIG. 3, the paper feed opening 1a is automatically closed by the shielding plate 21.
It is possible to prevent dirt and dust from entering the inside of a portable copying machine. At the time of reuse, by placing the portable copying machine in a horizontal position, the shielding member 2 rotates as in the case of use described above, and the paper feed opening 1a automatically opens.

Note that the shielding member 2 may be provided on the paper ejection opening 1b side instead of on the paper feed opening 1a side as in this embodiment, and in this case, the handle 31 is also provided on the paper ejection opening 1b side. It is sufficient if it is provided on the side surface of the housing 3 where the portion 1b is provided. In addition, in a portable copying machine without a handle, if a shielding member is provided for each of the paper feed opening 1a and the paper ejection opening 1b, the paper feed opening 1a or the paper ejection opening 1b may be closed. Even if one of the portable copying machines 1b is placed vertically facing downward, the upwardly facing opening of the portable copying machine can be automatically closed.

In the shielding member 2, the arrangement of the arm portion 22 and the shielding plate 21 does not have to be in a substantially L-shape in side view as in this embodiment, but may be in a substantially T-shape, for example. Further, the shielding plate 21 may be in the shape of a straight plate instead of being slightly curved as in this embodiment. In this case, in order to completely close the paper feed opening 1a, the arm portion 22 and the shielding plate may be arranged so that the angle between them is smaller than a right angle.

(Effects of the invention) According to the portable copying machine of the invention, when used in a horizontal position, the other side of the shielding member is heavier than the center of rotation, so the shielding member rotates and one side rises above the opening. As a result, the opening is automatically set to the open state, while when not in use, by placing it in a vertical position, the shielding member similarly rotates due to the weight of the other side of the shielding member, which automatically opens the opening. It is blocked by.

Therefore, when using or not using,
The paper feed opening or paper ejection opening can be automatically opened or closed simply by changing the orientation to horizontal or vertical without requiring any effort. This prevents foreign matter such as dust from entering the portable copying machine from the inside of the portable copying machine, and ensures good copying at all times during reuse.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an embodiment of the present invention, Fig. 2 is a perspective view of the shielding member, and Fig. 3 is a partially cutaway front view of the portable copying machine of Fig. 1 placed vertically. It is a diagram. 1a... Paper feed opening, 1b... Paper discharge opening, 2... Shielding member, 3... Housing.

Claims (1)

[Claims for Utility Model Registration] 1. In a portable copying machine in which a paper feed opening is provided on one side of the housing in a horizontal position, and a paper ejection opening is provided on the other side, the paper feed opening A shielding member is provided at the opening or the paper ejection opening, and this shielding member is supported so as to be freely rotatable around a horizontal axis at a position where the other side is heavier than the other side. In a vertical position in which the member is positioned so that the opening is open and the opening provided with the shielding member faces upward, the shielding member is positioned so that the shielding member is blocking the opening. A portable copying machine characterized in that parts are arranged. 2. The portable copying machine according to claim 1, wherein a stopper is provided on one side or the other side of the shielding member for regulating the rotation range of the shielding member.