JPH0423864Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an attachment/detachment mechanism for a paper feed section provided in a copying machine or the like.

(b) Conventional technology Conventionally, as a mechanism for attaching and detaching the paper feed section,
No. 153240 states, ``A conveyance section unit that combines the copy paper conveyance section from the front of the paper feed roller to the discharge section is attached to the main body of the copying machine so that it can be freely pulled out in the copy paper conveyance direction, and a first lock is attached to the main body side. a handle provided on a side plate of the conveying unit so as to be able to release a second lock piece which is rotatably biased so as to engage with the first lock piece of the conveying unit; 2. A transport section unit draw-out mechanism for a copying machine, characterized in that it is provided with a mechanism configured to be connected to a transport section unit of a copying machine.

(c) Problems to be solved by the invention In the above-mentioned conventional technology, the first lock piece provided on the apparatus main body side locks with the second lock piece provided on the paper feed section (conveyance unit). The structure was complicated, and various parts were prone to looseness after long-term use.

(d) Means for Solving Problems The present invention provides a mechanism for attaching and detaching a paper feed unit in which a paper feed unit is detachably attached to the main body of the apparatus by magnetic force, and a handle is attached to the paper feed unit. a fulcrum that rotatably supports the paper feeder on the paper feed section; a member provided on the apparatus main body that is located near the fulcrum and comes into contact with the handle when the paper feed section is attached to the apparatus main body; When the paper feeding unit is attached, the paper feeding unit is provided with the fulcrum and a handle gripping portion of the handle provided at a distance from the position of the abutting member, and by rotating the handle gripping portion about the fulcrum, the paper feeding This is an attachment/detachment mechanism for the paper feeding section, which is characterized by detaching the paper feeding section from the main body of the apparatus.

(e) Effects In the present invention, the paper feed section is detachably attached to the main body of the apparatus by magnetic force, so the structure is simple and no looseness occurs in the various parts even after long-term use.

In addition, the member provided on the main body of the device that comes into contact with the handle is located near the fulcrum that rotatably supports the handle when installed, and the handle grip is located further away than the fulcrum and the abutting member. Therefore, the force applied to the abutting member is larger than the force applied to the handle gripping portion. Therefore, a slight force applied to the handle grip section will apply the force necessary to detach the paper feed section from the main body of the apparatus to the abutment member.

(F) Embodiment FIGS. 1 and 2 are sectional views of main parts of the paper feed section and the main body of the apparatus according to the embodiment of the present invention, and the same parts are given the same reference numerals.

1 shows a state in which the paper feed section 2 is removed from the main body 1 of the apparatus, and FIG. 2 shows a state in which the paper feed section 2 is attached to the main body 1 of the apparatus.

Here, 3 is a handle, 8 is a shaft for rotatably attaching the handle 3 to the paper feed section 2, and 9 is a spring that supports the handle 3.

In FIGS. 1 and 2, the handle 3 has a U-shaped side surface, and holes for passing the shaft 8 are provided at both ends of the U-shape. Reference numeral 11 denotes a handle grip portion provided near the center of the U-shape for gripping and rotating the handle 3.

Further, reference numeral 6 denotes a magnet attached to the main body 1 of the apparatus, which attracts the paper feed section 2 in the state shown in FIG.

Reference numeral 7 designates an engaging piece having a concave portion attached to the paper feed section 2, and in the state shown in FIG. ing.

Further, reference numeral 10 denotes a rail provided on the main body of the apparatus, which facilitates movement of the paper feed section 2. At this time, if a bearing (not shown) is inserted between the rail 10 and the paper feed section 2, the movement will be smoother.

Reference numeral 5 denotes an abutting member that is provided on the main body 1 of the apparatus and comes into contact with the handle 3 in the state shown in FIG. The contact member 5 is located near the shaft 8 that rotatably supports the handle 3 when the paper feed section 2 is attached.

Comparing the distance between the handle grip 11 and the abutting member 5 and the distance between the shaft 8 and the abutting member 5, the distance between the handle grip 11 and the abutting member 5 is longer. That is, when the abutment member 5 is centered, the handle gripping portion 11 is located further away than the abutment member 5 .

FIG. 3 is a top view of the apparatus main body in the state shown in FIG. 2, and the same parts as in FIGS. 1 and 2 are given the same reference numerals.

Next, the operation will be explained. In the figure, handle 3
When the handle grip portion 11 is grasped and moved in the direction of the arrow in the figure, the handle 3 rotates with the shaft 8 serving as a fulcrum. And the contact member 5 and the handle grip part 11 of the handle 3
comes into contact with the shaft side. When the handle gripping part 11 is subsequently rotated in the direction of the arrow, the handle gripping part 11 becomes the point of force, the contact member 5 in contact with the handle 3 becomes the fulcrum, and the shaft 8 becomes the point of action. Force acts. As a result, forces act in the same direction on the handle 3 in which the shaft 8 is incorporated and on the paper feed section 2 in which the handle 3 is incorporated. Therefore, until now, paper feed section 2 and device main body 1
was attracted by the magnetic force of the magnet 6, but due to the above-described lever principle, the paper feeding section 2 is urged in the direction of detaching from the main body of the apparatus and is separated from the magnet 6.

That is, by utilizing the principle of leverage, the force applied to the shaft 8 becomes larger compared to the force applied to the handle grip 11, and the slight force applied to the handle grip 11 moves the paper feeder 2 into the device. The force necessary to separate from the main body will be applied to the shaft 8.

(g) Effects of the invention The present invention has a simple structure because the paper feeding section is detachably attached to the main body of the device using magnetic force, and the paper feeding section does not cause looseness even after long-term use. A detachable mechanism can be provided.

In addition, the member provided on the main body of the device that comes into contact with the handle is located near the fulcrum that rotatably supports the handle when installed, and the handle grip is located further away than the fulcrum and the abutting member. Therefore, the force applied to the abutting member is larger than the force applied to the handle gripping portion. Therefore, in order to apply the necessary force to the contact member to detach the paper feed section from the apparatus main body, it is only necessary to apply a slight force to the handle gripping section, and the paper feed section can be easily detached from the apparatus main body. A mechanism for attaching and detaching the paper feed unit can be provided.

[Brief explanation of the drawing]

1 and 2 are sectional views of essential parts showing the relationship between the paper feed section and the main body of the apparatus according to an embodiment of the present invention, and FIG. 3 is a top view of FIG. 2. 1...Device main body, 2...Paper feed section, 3...Handle,
6... Magnet, 11... Handle gripping part.

Claims (1)

[Claims for Utility Model Registration] (1) In a paper feeding unit attachment/detachment mechanism in which a paper feeding unit is detachably attached to an apparatus main body by magnetic force, and a handle is attached to the paper feeding unit, the handle is attached to the paper feeding unit. a fulcrum that is rotatably supported by the paper feed section; a member that is provided on the apparatus main body and is located near the fulcrum and comes into contact with the handle when the paper feed section is mounted on the apparatus main body; a handle gripping portion of the handle provided at a distance from the fulcrum and the position of the abutment member, and by rotating the handle gripping portion about the fulcrum, the paper feeding portion can be attached to the main body of the apparatus. A paper feeding section attachment/detachment mechanism characterized by detachment from the paper feed section. (2) The paper feeding section is formed with an engaging section, and the engaging section is engaged with an engaged section provided on the main body of the device. The attachment/detachment mechanism for the paper feed unit according to item 1.