JPH0335251A - Clamshell type image forming device - Google Patents

Abstract

PURPOSE:To eliminate the release of the engagement of a paper manually inserting table with an upper part main body and the damage of the engaged part even though a main body is released by providing a paper feeding table holding means on a part where a paper manually inserting table is made abut on the side surface of the upper part of the main body so that they are slidably and attachably, detachably engaged. CONSTITUTION:The paper manually inserting table 10 is slidably and attachably, detachably engaged with the back surface 9 of the upper part of the main body 3 by the paper feeding table holding means 31 constituted of a guiding frame 32, a magnet slider 33 and a magnetic plate. When the upper part of the main body 3 is released, the paper manually inserting table 10 which is rocked at the upper main body 3 follows and rocks clockwise as shown by a figure, and the magnet slider 33 slides in the direction of an arrow K along the guiding groove of the guiding frame 32 while holding the paper manually inserting table 10, whereby the paper manually inserting table 10 is not removed from the upper main body 3. Thus, such a clamshell type image forming device can be obtained that the engagement of the paper manually inserting table with the upper main body of the main body is not released nor the engaging part or a cooperative junction means is not damaged when the upper main body is released while storing the paper manually inserting table.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clamshell type image forming apparatus such as a copying machine or a laser beam printer. Regarding the paper department.

[Prior art]

Conventionally, the Ii allows for manual paper feeding as well as centrifugal paper feeding.
Image-based Flt devices are becoming more common. Among these, some devices have been devised to avoid complicating the device configuration or increasing the required space by using the paper feed roller for cassette paper feed also as manual paper feed. As a paper feeding device for such an image forming apparatus, for example,
A device described in Publication No. 3-4034 is known.

In the above-mentioned paper feeding device, a manual paper feeding tray, which is supported by the main body of the image forming apparatus so as to be pivotable in the vertical direction, is rotated downward during manual paper feeding, and the paper stacked in the paper feeding cassette is connected to the paper feeding roller. By inserting it between them, it also serves as the paper feed roller. Therefore, there is no need to newly provide a manual paper feed roller, and the manual paper feed tray is stored within the main body of the image forming apparatus, which is useful when manual paper feeding is not performed. On the other hand, since the manual paper feed tray and the insertion protrusion at the tip of the manual paper feed tray are integrally formed, a large space is required within the main body of the device for swinging the manual paper feed tray. Ta.

Therefore, if the paper feeding device as described above is to be used in a clamshell type image forming apparatus, the manual paper feeding table and the insertion (pushing) protrusion are constructed as separate members, and the insertion The protrusion may be placed close to the insertion site between the paper feed roller and paper to reduce its operating range, or the manual feed tray fulcrum shaft of the manual feed tray may be moved to provide a large swing space for the manual feed tray. It is also possible to reduce the space by placing the support independently of the shell fulcrum axis in a position where the support is not present.

[Problem to be solved by the invention]

However, in the above-mentioned clamshell type image forming apparatus in which the shell fulcrum shaft and the manual feed base fulcrum shaft are centered, the manual paper feed is difficult to perform when clearing a jam such as a paper jam that occurs inside the main body. If you try to open the upper main body while the base is still locked to the upper main body, relative friction will occur between the manual paper feed base and the upper main body, which may cause the locked state to be released.
Alternatively, malfunction such as damage to one of the locking parts may occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a simple configuration that allows the manual feed tray to be disengaged from the upper body even if the upper body is opened while the manual feed tray is stored. It is an object of the present invention to provide a talamusinil type II imitation forming device that does not cause breakage or damage to any of the locking portions.

[Means to solve the problem]

In order to achieve the above object, the means adopted by the present invention are:
The main body is divided into an upper main body and a lower main body that can be opened and closed about a shell fulcrum axis, and when not in use, a manual feed stand fulcrum shaft supported near the shell fulcrum axis of the lower main body and parallel to the cough shell fulcrum axis is provided. A manual feed tray is provided which is stored along a side surface of the upper main body on the fulcrum shaft side and which swings away from the side surface when in use. In a clamshell image forming device that manually feeds paper close to a paper roller,
A paper feed tray holding means is provided at the abutting portion of the manual paper feed tray and the side surface of the upper main body for slidably and removably engaging the manual tray and the side surface of the upper body; It is formed by being divided into an upper stand and a lower stand so as to be bendable with respect to the side surface, and a locking part that can be freely engaged and detached from the side surface is provided at the end of the upper stand of the manual paper feed stand. The manual feed tray is operated by a cooperating coupling means that causes the manual feed tray to work together in the same direction in accordance with the rotation of the upper body, and also allows the manual feed tray to independently rotate relative to the upper body. This is a clamshell type image forming apparatus that is characterized in that a paper feed tray and the upper main body are connected.

[Effect]

According to the first invention, when the manual paper feed tray is stored, the manual paper feed tray and the side surface of the upper main body on the fulcrum axis side are engaged by the paper feed tray holding means. When the upper main body is opened in the stored state, the paper feed tray holding means slides between the manual paper feed tray and the side surface while keeping them engaged.

Furthermore, when using the manual paper feed tray, the manual paper feed tray can be detached from the upper main body and can be swung to a predetermined position.

Next, according to the second invention, when the manual paper feed tray is stored, the manual paper feed tray and the side surface are engaged with each other by the locking portion. When the upper main body is opened in the stored state, the manual paper feed tray bends toward the side surface in response to the friction of the movement with the upper main body. Further, when the manual paper feed tray is used, the engaging state of the locking portion is released and the manual paper feed tray is moved to a predetermined position.

Subsequently, according to the third invention, when the upper body is opened, the cooperating connecting means co-operates in the same direction in response to the rotation of the upper body while keeping the manual feed tray in the stored state. Then, when the upper body is closed, the manual feed tray returns to its storage position in cooperation with the rotation of the upper body.Next, when using the manual feed tray, The manual feed tray can be independently rotated with respect to the upper main body by the working connection means, and can be swung to a predetermined position.

〔Example〕

Hereinafter, embodiments embodying the present invention will be explained with reference to the accompanying drawings to provide an understanding of the present invention. here the first
FIG. 2 is a side structural view showing the rear part of a clamshell image forming apparatus according to an embodiment of the first invention, and FIG. , FIG. 3 is an operational explanatory diagram showing the state of use of the manual paper feed tray of the same ramshell type image forming apparatus, and FIG. 4 is a diagram illustrating the operation of the clamshell type image forming apparatus according to an embodiment of the second invention. FIG. 5 is an enlarged plan view showing a locking member that engages the upper body of the clamshell image forming apparatus and the manual paper feed tray; FIG. 6 is a side structural view showing the rear part of the clamshell image forming apparatus; FIG. FIG. 7 is an operational explanatory diagram showing the open state of the upper main body when the manual paper feed tray of the apparatus is stored; FIG. FIG. 8 is a state explanatory diagram showing the state in which the manual paper feed tray of the clamshell type image forming apparatus is used, and FIG. 9 shows the open state of the upper main body when the manual paper feed tray of the clamshell type image generating apparatus is stored. FIG.

The embodiments described below are merely examples of embodying the present invention, and are not intended to limit the technical scope of the present invention.

In the Talamusinil-type image placement device 1□ according to the embodiment of the first invention, the main body 2 is divided into an upper main body 3 and a lower main body 4, as the structure of the rear part is shown in FIGS. 1 and 2. The upper main body 3 swings forward with respect to the lower main body 4 about the respective fixed shell fulcrum shafts 5 so as to be openable and closable. Near the shell fulcrum shaft 5 of the lower body 4, that is, at the rearmost portion of the lower body 4, a manual feed base fulcrum shaft 8 is supported parallel to the shell fulcrum shaft 5. A manual paper feed tray 10 is fixed to the manual feed tray fulcrum shaft 8, and is stored along the back surface 9 of the upper main body 3 when not in use (indicated by a solid line in the figure).
.

When the upper main body 3 is opened, the manual feed tray 10 follows the back surface 9 and swings rearward to a position shown by a two-dot chain line in the figure, and when manually feeds paper, it moves away from the back surface 9. It is then swung further backwards.

A paper feed roller 7 is disposed inside the lower body 4 and supplies paper from a paper feed cassette 20 mounted from the rear of the lower body 4 into the interior of the body 2 .

A gear portion 18 is formed at the lower end of the manual paper feed tray 10. The cough gear part 18 meshes with a gear part 19 at the upper end of the rod 16 rotatably provided on the shaft 15 at the bottom of the lower body 4. The wand 16 has a push-down protrusion 1 for pushing down the paper in the paper feed cassette 20 during manual paper feeding.
7 is formed to protrude toward a portion adjacent to the paper feed roller 7 and the paper feed cassette 20. At this time, the tip of the push-down protrusion 17 is set to slightly fit into the paper feed roller rough to enable manual paper feeding when viewed from the side.

A housing-shaped guide frame 32 having vertically long guide grooves is fixed on the back surface 9 of the upper main body 3, and a magnet 7) which is slidable along the guide grooves and a slider 33 is attached to the guide frame 32. installed inside. Further, a magnetic plate (not shown), for example, an iron plate, is installed on the surface of the manual paper feed tray 10 facing the back surface 9.

That is, the guide frame 32. A paper feed tray holding means 3 that slidably and detachably engages the manual paper feed tray 10 and the rear surface of the upper main body 3 from a magnet slider 33° and a magnetic plate.
1 is configured.

Therefore, the Taramusinil type image forming apparatus 1 configured as described above. , the manual paper feed tray 10 is connected to the upper main body 3.
When the magnet slider 33 on the upper main body 3 side is stored along the back surface 9 of the
attracts the magnetic plate on the side of the manual paper feed tray 10, so the manual paper feed tray 10 is locked to the upper main body 3 via the paper feed tray holder v&31.

Next, when the upper body 2 is opened in the above state,
As shown by the two-dot chain line in FIG. 1, the manual paper feed tray lO locked to the upper main body 3 also follows and swings clockwise in the diagram. At this time, the fulcrum shafts 5.8 of the upper main body 3 and the manual paper feed tray 10 are aligned, so that the relative positions of the upper main body 3 and the manual paper feed table 10 rub against each other in the vertical direction. Here, the magnet slider 33
slides in the direction of the arrow along the guide groove of the guide frame 32 while holding the manual paper feed tray 10, so the manual paper feed tray 10 does not come off from the upper main body 3, or the paper feed tray 10b1i1 There is no word that 31 is damaged.

When manually feeding paper, the above-mentioned manual paper feeding stand 10 is further slid clockwise as shown by the solid line in FIG. 3. At this time, the magnet slider 33 is easily detached from the magnetic plate. Further, the rod 16 having a gear portion 19 that meshes with the gear portion 18 at the lower end of the manual paper feed table IO swings counterclockwise.
The push-down protrusion 17 intervenes between the paper (not shown) and the paper feed roller 7.

In the above-mentioned embodiment, a magnet is used as the slider and a magnetic plate is used as the engaging partner, but the present invention is not limited to this. It may be replaced with one equipped with Velcro or a snap fit.

Next, a clamshell image forming apparatus 1b according to Example 1 of the second invention will be described. The clamshell type image forming apparatus 1b differs from the image forming apparatus 1 described above in that, as shown in FIG. 4 and FIG. The upper stand 10- and the lower stand 10e are divided into an upper stand lO- and a lower stand 10e so as to be bendable about the shaft 25, and one end of the upper stand 10 of the manual paper feed stand 10b and the back surface 9 can be attached and detached. Locking part 21 to be engaged with
was established.

The locking portion 21 is connected to the upper table 10J of the manual paper feed tray 10b.
A locking groove 23 formed at the end closer to the upper body 3, and a locking groove 22 provided on the upper body 3 side via a support stand 24.
and a joint protrusion 23 that pivots and engages with the joint.

A vertical groove is formed at the tip of the joint protrusion 23, making it easy to engage and disengage from the locking groove 22.

Therefore, in the clamshell image forming apparatus 1 configured as described above, when the manual paper feed table tab is not used,
The manual paper feed tray ton is locked to the upper main body 31 via the locking portion 21 and stored in an upright position. On the other hand, when in use, it is detached from the upper main body 3 and swung rearward to a predetermined position while remaining extended.

When the upper main body 3 is opened with the manual paper feed tray 10 etc. stored, as shown in FIG. The manual paper feed tray fob is bent about the shaft 25 as a fulcrum. Thereby, it is possible to obtain the same effect as that of the embodiment of the first invention described above.

Next, as shown in FIG. 7, the clamshell type image forming apparatus IC according to the third embodiment of the invention differs from the above-described image forming bag Wlm in that the manual paper feed table 10 is attached to the upper main body. A cooperating connecting means 26 that allows the manual paper feed tray 1O to work together in the same direction in accordance with the rotation of the upper body 3 and to swing the manual paper feed tray 1O so as to be independently movable with respect to the upper body 3 is connected to the manual paper feed tray 1O and the upper body 3. It was established in connection with the

The cooperating coupling means 26 includes a gear 28 fixed to the upper main body 3 via the shell fulcrum shaft 5, and a brake ring 30 inserted into the manual feed tray fulcrum shaft 8 to which the manual feed tray 10 is fixed. A gear 29 is provided on the manual paper feed tray 10 via the manual tray fulcrum shaft 8 and the brake ring 30, and a timing belt 27 is installed between the gear 29 and the gear 28. The brake ring 30 slides between the gear 29 and the manual feed tray fulcrum shaft 8 when the load on the upper main body 3 side is large with respect to the rotation of the manual feed tray fulcrum shaft 8, and when the load is small. It is formed using an elastic body that engages with the gear 29 and the fulcrum shaft 8.

Therefore, when using the manual paper feed tray 10, the manual paper feed tray 10 is swung clockwise as shown in FIG. Then, the manual feed table fulcrum shaft 8 rotates and attempts to rotate the brake ring 30 in the same direction. However, the gear 28. Since the gear 29 connected via the tie belt 2 has a large load, the brake ring 30 slides between the gear 29 and the manual feed base fulcrum shaft 8. As a result, the manual paper feed tray l
O can independently swing relative to the upper body 3. At this time, the operation in which the loft 16 is swung counterclockwise and the push-down protrusion 17 is moved below the paper feed roller 1 is the same as in the case of the clamshell image forming apparatus 11.

Furthermore, with the manual paper feed tray 10c stored, the upper main body 3
When the shell fulcrum shaft 5 is released, as shown in FIG.
The upper main body 3 is biased by a torsion bar 35 disposed in the upper body 3 and swings clockwise in the figure. Accordingly, the rotation of the upper body 3 is caused by the shell fulcrum shaft 5. Gear 28. Tight puffer belt 2nd gear 29. Brake ring 30. The information is transmitted to the paper feed tray fulcrum shaft 8 in the order of description, and finally transmitted to the manual paper feed tray lO. At this time, the manual paper feed table 10 is in an unloaded state, so it swings in cooperation with the movement of the upper main body 3.

Thus, it goes without saying that the talamusinil type image forming apparatus 1c can obtain the same effects as the image forming apparatuses according to the embodiments of the first and second inventions described above.

Here, in the above-mentioned embodiment, the cooperative connecting means 2
Although the timing belt 27 was used as a component of 6,
The present invention is not limited thereto, and a chain or a connecting gear may be used instead.

Furthermore, although the brake ring 30 is disposed on the side of the manual feed table fulcrum shaft 8, the member on the side of the fulcrum shaft 8 can be fixed and the brake ring 30 can be disposed on the side of the shell fulcrum shaft 5.

〔Effect of the invention〕

According to the present invention, the main body is divided into an upper main body and a lower main body so as to be freely openable and closable about the shell fulcrum axis, and a manual feed table fulcrum is supported in the vicinity of the shell fulcrum axis of the lower main body in parallel with the shell fulcrum axis. A manual feed tray is provided on the shaft, which is stored along the side surface of the upper main body on the fulcrum shaft side when not in use, and swings away from the side surface when in use, and an end portion of the manual feed tray when in use In a clamshell image forming apparatus that manually feeds paper by bringing the paper feed roller close to the paper feed roller on the lower main body side, the manual paper feed tray and the upper main body may be slidable and detachable from each other at a contact portion with a side surface of the upper main body. A clamshell type image forming apparatus is provided with a paper feed tray holding means that can be engaged freely, the main body is divided into an upper main body and a lower main body so as to be freely openable and closable about a shell fulcrum axis, and the lower main body is divided into an upper main body and a lower main body, and A manual feed table fulcrum shaft supported near the shell fulcrum axis of the main body in parallel with the cough shell fulcrum axis is configured to be stored along the fulcrum shaft side side surface of the upper body when not in use and to be separated from the side surface when in use. In a clamshell image forming apparatus in which a swinging manual paper feed tray is thrown, and in use, the end of the manual paper feed tray is brought close to a paper feed roller on a lower main body side to manually feed paper, the manual paper feeder The table is formed by being divided into an upper table and a lower table so as to be bendable with respect to the side surface, and a locking part that can be freely engaged and detached from the side surface is provided at the end of the upper table of the manual paper feed table. A Taramusinil type image forming apparatus and a main body are divided into an upper main body and a lower main body so as to be freely openable and closable about a shell fulcrum axis, and there is a shell fulcrum axis parallel to the cough shell fulcrum axis near the shell fulcrum axis of the lower main body. A manual feed tray is provided on a manual feed tray fulcrum shaft supported by a manual feed tray, which is stored along the side surface of the upper main body on the fulcrum shaft side when not in use and swings away from the side surface when in use. In a clamshell image forming apparatus that manually feeds paper by bringing an end of the manual paper feed tray close to a paper feed roller on a lower main body side, the manual paper feed tray is moved in the same direction as the upper main body rotates. A clamshell characterized in that the manual paper feed tray and the upper main body are connected by a cooperating connection means that allows the manual paper feed tray to independently rotate relative to the upper main body. Since it is a type image forming device, with simple ti precepts,
Even if you open the upper body with the manual feed tray stored,
The engagement state between the manual paper feed tray and the upper main body will not be released, or the paper feed tray holding means, the locking portion, or the cooperating connection means will not be damaged.

[Brief explanation of drawings]

FIG. 1 is a side structural view showing the rear part of a clamshell type image forming apparatus according to an embodiment of the first invention, and FIG. 2 is an enlarged rear view showing the paper feed tray holding means of the same clamshell type image forming apparatus. 3 and 3 are operation explanatory diagrams showing the state of use of the manual paper feed tray of the lamb shell image forming apparatus, and FIG. 4 is the clam shell image forming apparatus according to the second embodiment of the invention ψ. FIG. 5 is an enlarged plan view showing a locking member that engages the upper body of the clamshell image forming apparatus with the manual paper feed tray, and FIG. 6 is a side structural view showing the rear part of the clamshell image forming apparatus. FIG. 7 is a side structural view showing the rear part of the clamshell image forming apparatus according to the embodiment of the invention shown in FIG. 3; FIG. 8 is a state explanatory diagram showing the state in which the manual paper feed tray of the clamshell type image forming apparatus is used, and FIG. 9 is a state in which the upper main body of the clamshell type copying and generating apparatus is opened when the manual paper feed tray is stored. It is a state explanatory diagram showing. [Explanation of symbols] fin lb, lc 2...Main body 4...Lower main body 7...Paper feed roller 9...Back surface 10.10&...Manual paper feed stand...Clamshell image formation Device 3... Upper main body 5... Shell fulcrum shaft 8... Manual feed base fulcrum shaft 104... Upper base 10. ...Lower stand 21...
・Latching part 22...Latching groove 23...Knodal projection
24...Support stand 26...Cooperating connection means 27...Timing belt 28...Gear 29...Gear 30...Prekilling ring 31...Paper feed stand holding means 32...Guide Frame 33... Magnet slider

Claims (3)

[Claims] (1) The main body is divided into an upper main body and a lower main body so as to be freely openable and closable about a shell fulcrum axis, and a manual feed base fulcrum shaft is supported near the shell fulcrum axis of the lower main body in parallel with the shell fulcrum axis; A manual feed tray is provided which is stored along the fulcrum shaft side side of the upper main body when not in use and swings away from the side surface when in use. In a clamshell image forming apparatus that manually feeds paper in close proximity to a side paper feed roller, the manual paper feed table and the side surface of the upper main body are slidably and detachably engaged with each other at a contact portion between the manual paper feed table and the side surface of the upper main body. A clamshell type image forming apparatus, characterized in that a clamshell type image forming apparatus is provided with a paper feed tray holding means for aligning the sheets. (2) The main body is divided into an upper main body and a lower main body so as to be freely openable and closable about a shell fulcrum axis, and a manual feed base fulcrum shaft is supported near the shell fulcrum axis of the lower main body in parallel with the shell fulcrum axis; A manual feed tray is provided which is stored along the fulcrum shaft side side of the upper main body when not in use and swings away from the side surface when in use. In a clamshell image forming apparatus that manually feeds paper in close proximity to a side paper feed roller, the manual paper feed table is formed by being divided into an upper table and a lower table so as to be bendable with respect to the side surface. ,
A clamshell type image forming apparatus characterized in that a locking portion that can be freely engaged and detached from the side surface is provided at an end of the upper base of the manual paper feed tray. (3) The main body is divided into an upper main body and a lower main body that can be opened and closed about a shell fulcrum axis, and a manual feed base fulcrum shaft is supported near the shell fulcrum axis of the lower main body in parallel with the shell fulcrum axis; A manual feed tray is provided which is stored along the fulcrum shaft side side of the upper main body when not in use and swings away from the side surface when in use. In a clamshell image forming apparatus that manually feeds paper in close proximity to a paper feed roller on the side, the manual paper feed table is made to work together in the same direction according to the rotation of the upper main body, and the manual paper feed table is A clamshell type image forming apparatus, characterized in that the manual feed tray and the upper body are connected to each other by a cooperating connecting means that is independently rotatably swung relative to the upper body.