JPH05113072A - Supporter of on-off member - Google Patents

Abstract

PURPOSE:To enable a side plate or the like to be easily opened or closed as well as to make the operation of opening or closing the on-off member and its locking performable in an easy manner, in an image former in use of a broad sheet of paper as in a large sized electronic copying machine for drawing use. CONSTITUTION:A fulcrum shaft 7 provided with an arm 8 as a handle is set up in a state of piercing through two frames 3, 4 in front and in the rear of an image former, and two frames 11, 12 at both sides of an on-off member 10 is locked to this fulcrum shaft 7. These slide plates 11, 12 at both sides of the an-off member is preset to the shaft in a state of being twisted, and when the on-off member is closed, it is made contact with a pin 6 so as to make the rear side frame 12 be positioned first, and then the front side frame 11 is positioned so as to twist the fulcrum shaft in a state of being pressed to a pin 5. Then, operations for the opening or closing of the on-off member and its locking are made so as to be performable only at the front side of a copying machine and suchlike.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as an electronic copying machine, and more particularly to a supporting mechanism for a member provided to be openable and closable with respect to a main body frame, and more particularly to an electronic copying machine using a large size sheet or the like. , A device that enables the opening / closing member to be closed accurately by operating on the front side.

[0002]

2. Description of the Related Art In an image forming apparatus such as an electronic copying machine, an opening / closing member such as a large number of door members is attached to a main body frame in order to remove jams in a sheet conveying path and maintain each member of the apparatus. Are arranged and the opening and closing members thereof are opened to perform the work. Examples of the opening / closing member include a side opening / closing door in addition to the front door of the copying machine, etc. In addition, in a small electronic copying machine, a means for opening the upper frame and the like are configured. An opening / closing member provided in the electronic copying machine is disclosed in Japanese Patent Application Laid-Open No. 2-23.
As disclosed in Japanese Patent No. 1324, a means is used in which a guide plate on the outer side of the sheet conveying path is integrally formed with a door member on a side portion of the apparatus so that jam processing can be easily performed.

Further, as shown in Japanese Utility Model Laid-Open No. 2-52865, a pinch roller is integrally provided on a guide plate of a sheet conveying path and is swingably provided on the other guide plate. There are known ones that are configured to easily perform jam processing in the paper transport path. As described above, in a relatively small-sized apparatus such as an electronic copying machine, an opening / closing member provided to be openable / closable with respect to a main body frame supports a base portion via a hinge, and the opening / closing member is a latch mechanism or the like. It can be easily fixed by using.

However, in the case of a large-sized electronic copying machine for drawings and the like, the depth of the apparatus is about 1.5 m, and even if the opening / closing member is supported by the hinge member, the opening / closing member is The mechanism for fixing and holding the end on the swing side becomes troublesome. For example, as shown in FIG. 6, when the opening / closing member 25 is provided so as to be openable / closable with respect to the main body frame 2 of a large-sized electronic copying machine, one end of the opening / closing member 25 is connected via a support shaft 26. Means is used in which the pins 24, which are swingably supported and are provided on both sides of the other end, are locked and held by using the latch members 20 provided corresponding to the respective pins. The latch member 20 biases a locking portion 21 that locks the pin 24 in the locking direction by a spring 23, and an arm member 22 that projects above the spindle of the latch member 20. By swinging the latch member 20, the locked state with respect to the opening / closing member 25 is released, and the opening / closing member can be opened.

[0005]

The opening / closing member 25 as shown in FIG. 6 is, for example, as shown in FIG.
The opening / closing member is configured as one door-shaped member, and the support shaft 26
It is swingably supported via. Therefore, when the opening / closing member is opened / closed, it is necessary to hold the free end portion with both hands and attach / detach the pin 24 to / from the latch member 20. However, in a large electronic copying machine that handles large-sized sheets for drawings, etc., as described above,
Since the depth of the device is 1.5 m, the operator
It is difficult to simultaneously perform the attaching / detaching operation by the latch member at the free side end of the opening / closing member.

Therefore, when the opening / closing member is opened / closed, two workers are arranged on the front side and the rear side of the device, and the latch members 20 provided at the front and rear of the device are operated to open / close the device. Since the work of releasing the pin of the member is performed, there is a problem that the work efficiency is not good. Also,
When one operator opens and closes the opening / closing member, it is necessary to first operate the latch member on the front side, then turn to the rear side of the apparatus and operate the other latch member.
In order for one person to operate the relatively heavy opening / closing member,
There is also the problem of being forced to do troublesome work. In addition to the above-mentioned problem, as shown in FIG. 8, the image forming apparatus 1 is disposed near a wall, and only a margin for opening / closing the opening / closing member is formed between the floor 29 and the wall 28, and a side portion thereof is formed. When people are unable to move around, even more troublesome problems occur.

For example, opening and closing the opening / closing member 25 when a jam occurs in the sheet conveying path of the image forming apparatus,
Although the work of removing jammed paper can be performed relatively easily, it becomes difficult to operate the locking member to open and close the opening and closing member. In addition to the problem of the installation position of the image forming apparatus, when a person cannot move before and after the apparatus, the work becomes more troublesome and the work efficiency becomes poor. Further, when the opening / closing member is a member such as a door having a relatively small rigidity, when the opening / closing member is opened, the opening / closing member is in a state of being distorted by its own weight. There is also a problem that the fixing operation when closed is more troublesome.

[0008]

SUMMARY OF THE INVENTION As described above, according to the present invention, when an opening / closing member is provided for a large-sized image forming apparatus, one worker can operate one side of the apparatus without attaching or detaching the apparatus. It is an object of the present invention to provide a device that can be easily operated by a user and can easily perform the operation of locking the opening / closing member with respect to the main body frame only by attaching and detaching the pin and the latch member provided on the front side. I am trying.

[0009]

The present invention relates to an apparatus in which an opening / closing member such as an opening / closing door is provided on a main body frame of an image forming apparatus via a support shaft. The opening / closing member of the present invention supports the side plates on both sides of the opening / closing member with respect to the support shaft supported by the main body frame, and the side plates on both sides have different angles with respect to the support shaft. , The latch means is arranged only on the side plate that is pre-twisted and provided with an operating member such as a handle with respect to the opening / closing member, and when closing the opening / closing member, the other side plate comes first. It is configured to be in contact with the body frame. Further, in the opening / closing member of the present invention, side plates of the opening / closing member are attached to the support shaft to which a twisting force has been applied in advance, and both sides of the opening / closing member are attached by the twisting force of the supporting shaft. The side plate on the rear side of the opening / closing member comes into contact with the main body frame first, and the side plate on the front side is provided with a member such as a handle. Can be provided.

With the above construction, when the opening / closing member of the present invention is supported by the support shaft, the rear side is brought closer to the fixed portion and the front side is made farther from the fixed portion due to the twisting of the frame. However, the rigidity of the frame of the opening / closing member can be maintained. Further, in the opening / closing member of the present invention, it is possible to fix the opening / closing member to the main body frame only by disposing the fixing / holding mechanism by the latch member only on the front side, and the mechanism for the fixing can be simplified. it can. Even in a large electronic copying machine or the like, the operation of opening and closing the opening / closing member can be easily performed by only one operator operating from the front side of the image forming apparatus.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support device for an opening / closing member according to the present invention will be described with reference to the illustrated example. The example shown in FIG. 1 shows a case where the opening / closing member 10 is provided so as to be openable / closable with respect to the main body frame of the image forming apparatus. In the main body frame of the image forming apparatus, a support shaft 7 is disposed between the front frame 3 and the rear frame 4 so that the support shaft 7 penetrates the front frame 11 and the rear frame 4. The opening / closing member 10 is swingably supported with the side frames 12 fixed to each other. An arm member 8 such as a handle is attached to the front end of the support shaft 7, and the opening / closing member 10 is opened / closed by holding the arm 8 by hand and rotating it. To do. In order to hold the opening / closing member 10 in a fixed manner, for example, a latch member as shown in FIG. 6 may be arranged on the arm 8 so that the arm can be locked by the latch member. To

In the opening / closing member 10 shown in FIG. 1, a plate member 13 or the like is integrally fixed between the front and rear frames 11 and 12 to form an opening / closing door, and in addition to the plate members, The guide plate and the pinch roller can be integrally attached to form an opening / closing member for the paper transport path. Further, when the arm 8 is provided on the support shaft 7 supporting the opening / closing member 10, if an urging member such as a spring 9 is arranged on the arm 8, the opening / closing member 10 is opened / closed via the arm 8. At this time, the opening / closing operation can be performed lightly.

In the opening / closing member 10, as shown in FIG. 3, the front frame 11 and the rear frame 12 fixed to the support shaft 7 are supported by the rear frame 12 with respect to the front frame 11. It is fixedly held in a state of being tilted by an angle θ about 7. The inclination angle θ of the rear frame 12 is actually a very small angle, and when viewed from the side, the spacing between the end portions is set to about several mm, but the illustrated example is shown. In the figure, the two frames are attached to the support shaft at a relatively large angle. Therefore, in the opening / closing member 10 of the present invention, the frame is constructed in a twisted state as shown in FIG.

In order to provide the opening / closing member 10 in a twisted state with respect to the support shaft, like a normal door member,
A product manufactured by setting the flatness can be used.
When the side frames are attached to the support shaft with respect to the opening / closing member manufactured using a normal molding method, the frames on both sides are made to correspond to the twist, and a means such as welding is attached to the support shaft. Use and fix. Therefore, as described above, by fixing the frames on both sides of the opening / closing member to the support shaft, a twisting action is given to both the support shaft and the opening / closing member. Since the frame of the member has lower rigidity, the frame is twisted.

The body frame for supporting the opening / closing member of the present invention is provided with stopper pins 5 and 6 which project toward the inside of each of the frames 3 and 4 on both sides through which the supporting shaft penetrates. Then, when swinging the opening / closing member, the frames 11, 12 are moved to the stopper pins 5, 6
Positioning is performed with the opening / closing member closed in the state of being brought into contact with. Further, when the opening / closing member is one in which the side plate and the guide plate of the electronic copying machine are integrally provided, by closing the opening / closing member with respect to the main body of the electronic copying machine,
Even the positioning of the outer guide plate with respect to the paper transport path,
Be able to do it at the same time.

In the opening / closing member constructed as described above, as shown in FIGS. 2 and 1, the opening / closing member 10 is attached to the support shaft 7 in a twisted state,
When the rear frame 12 is swung via the support shaft 7, the upper end of the rear frame 12 is brought into contact with the pin 6 for positioning. Then, when the arm is still swung, the opening / closing member 10 is twisted in the direction in which the twist of the support shaft is eliminated, and the upper end of the front frame 11 is brought into contact with the pin 5 to open and close the opening / closing member. The member 10 can be fixed and positioned with respect to the body frame. In the opening / closing member of the present invention having the above-described configuration, the arm 8 provided on the front side of the image forming apparatus can be used to swing and fix with respect to the opening / closing member 10.

Therefore, as described above, when the opening / closing member is attached to the main body frame, the rear frame of the opening / closing member is held in a state of being pressed against the pin 6 by the twisting force of the support shaft. Thus, the front frame is fixed while being pressed against the pin 5.
Then, by fixing the arm 8 using a fixing means such as a latch member, the opening / closing member can be positioned with respect to the main body frame and can be held.

When the opening / closing member 10 is opened from the main body frame, when the latch member is disengaged from the arm, the support shaft 7 in a twisted state causes the front frame 11 to engage the main body frame. By exerting the action of swinging from the position in the counterclockwise direction, the front frame 11 is first separated from the main body frame. Next, when the operation of rotating the shaft 7 through the arm 8 is still performed, the rear frame 12 is separated from the main body frame, and thereafter, the operation of opening the opening / closing member is performed by the operation of rotating the arm. You can

In the opening / closing member of the present invention shown in the above embodiment, a stopper pin is used to position the main body frame of the image forming apparatus. On the other hand, in order to fix and hold the opening / closing member of the present invention, as shown in FIG. 5, the abutting member 14 is arranged in advance in order to bring the opening / closing member into contact with the main body frame 2. While the frames on both sides of the opening / closing member are pressed against the abutting member 14, the opening / closing member can be fixed to the main body frame. As described above, when the means for positioning the opening / closing member with respect to the butting member is used, any arbitrary member such as a rubber pad can be used as the positioning member.

Further, the opening / closing member of the present invention configured as described above is not applied only when supporting the opening / closing member in a state where the support shaft is arranged in the horizontal direction, but is supported on the vertical axis. It can also be applied to a member such as a door. Further, when the opening / closing member supporting method of the present invention is applied to the opening / closing member arranged on the side of the apparatus body in a large-sized electronic copying machine for drawings, the locking mechanism such as the latch member is arranged only at one place. However, the fixing can be easily performed. When the opening / closing member is opened / closed, the operator can easily perform the opening / closing operation on the front side.

[0021]

As described above, since the supporting device for the opening / closing member of the present invention is configured by combining the support shaft for imparting a twisting action and the opening / closing member, it can be used in a large-sized electronic copying machine or the like. In a device having such a depth, the mechanism for fixing the opening / closing member can be simplified. When the opening / closing member of the present invention is supported by the support shaft, the frame is twisted so that the rear side is close to the fixed portion and the front side is further separated from the fixed portion. Will be maintained. further,
In the opening / closing member of the present invention, the opening / closing member can be fixed to the main body frame only by disposing the fixing / holding mechanism by the latch member only on the front side. Even in a large-sized electronic copying machine or the like, the operation of opening and closing the opening / closing member can be easily performed by only one operator operating from the front side of the image forming apparatus, and the operability is improved. be able to.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a support mechanism for an opening / closing member of the present invention.

FIG. 2 is a front view of a support device for an opening / closing member.

FIG. 3 is an explanatory view of a state in which the frames on both sides of the opening / closing member are attached to the support shaft.

FIG. 4 is a perspective view of an opening / closing member.

FIG. 5 is an explanatory diagram of another fixing method of the opening / closing member.

FIG. 6 is an explanatory view of a conventional fixing mechanism for an opening / closing member.

FIG. 7 is a perspective view of a conventional opening / closing member.

FIG. 8 is an explanatory diagram of an arrangement state of the image forming apparatus and opening / closing of an opening / closing member.

[Explanation of symbols]

1 image forming apparatus, 2 body frame, 3.4
Frame, 5 ・ 6 stopper pins, 7 support shafts,
8 arms, 10 opening / closing member, 11 front side frame, 12 rear side frame, 20 latch member, 25 opening / closing member.

Claims (2)

[Claims] 1. A body frame of an image forming apparatus,
In an apparatus in which an opening / closing member such as an opening / closing door is provided via a support shaft, side plates on both sides of the opening / closing member are supported by a support shaft supported by the main body frame, and the side plates on both sides support the support. The latch means is arranged only on the side plate provided with an actuating member such as a handle with respect to the opening / closing member, and the opening / closing member is formed by twisting the opening / closing member at different angles with respect to the axis. A support device for an opening / closing member, characterized in that the other side plate is first brought into contact with the main body frame when closed. 2. A side plate of an opening / closing member is attached to each of the support shafts to which a twisting force is applied in advance, and the side plates on both sides of the opening / closing member are attached to the shafts by the twisting force of the supporting shaft. It is configured such that the side plates on the rear side of the opening / closing member come into contact with the main body frame first, and the members such as a handle are provided on the side plate on the front side. Item 2. A support device for an opening / closing member according to Item 1.