JPS606023Y2 - Paper feeding device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a paper feeding device for feeding sheet-like paper using a paper feeding cassette device in a copying machine or the like.

As a device that feeds sheet paper in copying machines, etc.
Conventionally, the one shown in FIG. 1 has been used.

That is, a spring 12.1 is attached to the bottom of the housing 11 having the separation claw 10.
A sheet of paper is placed on the sheet paper receiving plate 14 of a paper feed cassette 16 equipped with a sheet paper receiving plate 14 that is urged upward by the paper feed roller 17. I take out the paper one by one and feed it.

However, in this device, the paper feed cassette 16 is
When the inner sheet of paper (not shown) runs out, the sheet of paper receiving plate 14 is pushed upward by the springs 12 and 13 as shown in FIG.

Therefore, when replenishing a new sheet of paper, it is necessary to replenish the sheet of paper while holding down the sheet of paper receiving plate 14, making it difficult to load the sheet of paper and resulting in poor operability.

This idea was made based on the above circumstances, and the purpose is to provide a paper feed device that has a relatively simple structure, yet allows easy replenishment of sheet paper into the paper feed cassette, and has excellent operability. shall be.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

Inside the main body 19 of the copying machine, there is provided a paper feeder 21 which is a paper feeder for feeding sheet paper 20, and a casing 18, which will be described later, stores the sheet paper 20. A paper feed cassette 25 consisting of a paper receiving plate 24 , springs 26 and 27 serving as biasing members, and the like faces the paper feed roller 21 and is located at a first position where the sheet of paper 20 comes into contact with the paper feed roller 21 . It is movable between the inside of the main body 19 and the outside of the main body 19, which is a second position where the sheet-like paper 21 does not face the paper feed roller 21 and is not brought into contact with the paper feed roller.

Separation claws 22 supported by support rods 22a that are pivoted on both sides are provided at both front ends of the casing 18, which has an opening for feeding the sheet-like paper 20 upward, and the bottom surface thereof is penetrated. A hole 23 is formed.

Further, a flat sheet paper receiving plate 24 made of an iron plate on which the sheet paper 20 is placed is provided at the bottom of the housing 18.
This sheet-like paper receiving plate 24 is supported by springs 26, 2 which are biasing members.
7, it is always urged toward the opening of the housing 18 above.

Furthermore, a magnet 28 is inserted into the through hole 23 of the housing 18 and is a locking member that attracts the sheet paper receiving plate 24 to a position away from the paper feed roller 21 against the urging force of the springs 26 and 27. There is.

This magnet 28 has a curved tip 30a and one end 30a.
b is slidably supported by an arm 30, which is a support member attached to the bottom of the housing 18.

The protrusion 31 is a cam-shaped protrusion that is formed inside the main body 19 and is a release member that is inserted between the arm tip 28a and the bottom of the flute body 18 when the housing 18 is moved into the main body 19.

Next, we will discuss the effect.

When the housing 18 is inserted into the main body 19 in the first position and is in a state where paper can be fed by the paper feed roller 21, the curved tip 30a of the arm 30 is pushed by the protrusion 31 as shown in FIG. Since the magnet 28 is pressed down, it is spaced apart from the sheet paper receiving plate 24.

As a result, the sheet paper receiving plate 24 is not affected by the attractive force of the magnet 28 and is urged upward by the springs 26 and 27 as in the conventional device, and as the sheet paper 20 is fed, the sheet paper receiving plate 24 is 20 upwards in sequence.

In this way, when the sheet-like paper 20 runs out due to copying, the housing 18 is taken out to the outside of the main body 19, which is the second position, and the sheet-like paper 20 is replenished.

At this time, the sheet paper receiving plate 24 is pushed up to the upper part of the housing 18 by the springs 26 and 27, while the arm tip 30
a is removed from the protrusion 31 and returned in the direction of the arrow x, and the magnet 2
8 is inserted into the through hole 23.

Next, when the sheet-like paper receiving plate 24 is pressed down by hand, the sheet-like paper receiving plate 24 resists the biasing force of the springs 26 and 27 and moves toward the magnet 2.
8 and is locked in a position away from the paper feed roller 21 as shown in FIG.

After replenishing the sheet paper 20 in this state, when the housing 18 is inserted again into the main body 19 in the first position,
The arm tip 30a is pushed down by the projection 31 in the opposite direction to the arrow x direction, and the magnet 28 is forcibly separated from the sheet paper receiving plate 24 so as to release the sheet paper receiving plate 24 from the locked state.

As a result, the sheet-like paper receiving plate 24 is urged by the springs 26 and 27, and the sheet-like paper 20 is pushed down to a position where paper can be fed by the paper feed roller 21 and becomes stationary.

With this configuration, the sheet paper receiving plate 24 is easily and reliably latched to the bottom of the casing 18 when the sheet paper 20 is replenished by the magnet 28 that attracts the bottom of the sheet paper receiving plate 24. The replenishment operation is not hindered by the sheet-like paper receiving plate 24 as in the past, and operability is improved.

It should be noted that this invention is not limited to the above embodiments, and can be modified in various ways. For example, the shape and structure of the locking member and its release member can be arbitrary, and the material of the sheet-like paper receiving plate can also be made of an alloy with iron, etc. good.

Further, the separation claw may also be fixed to the housing instead of being movable.

As explained above, according to this invention, when replenishing sheet paper, the sheet paper receiving plate that supports the sheet paper is separated from the paper feeding member by the locking member that attracts it against the biasing force of the biasing member. Since it is easily and reliably locked in the direction, it is easy to replenish the sheet paper, and when feeding, the release device can release the sheet paper receiving plate by simply facing the paper feeding member. Since the locked state is forcibly and automatically released, there is no need for a new operation for release, and a sheet feeding cassette device with good operability can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional device, Fig. 2 and Fig. 3 are an embodiment of this invention, Fig. 2 is a cross-sectional view showing the device during replenishment, and Fig. 3 is a cross-sectional view showing the paper feeding state. FIG. 18... Housing, 19... Main body, 20.
... Paper feed roller, 22 ... Separation claw, 23
...Through hole, 24...Sheet paper receiving plate, 26, 27...Spring, 28...Magnet, 30...Arm , 31...protrusion.

Claims (1)

[Scope of utility model registration request] placing a sheet of paper on a sheet of paper receiving plate inside the housing that is urged toward the opening side of the housing by a biasing member;
A first contact between the sheet-like paper and the paper feed roller in the main body.
A paper feed cassette that can be moved between a position of In the apparatus for feeding sheet-like paper, at least a portion thereof is supported below the sheet-like paper receiving plate by a support member protruding outward from the housing, and the bottom surface of the sheet-like paper receiving plate is connected using a magnet. a locking member that magnetically attracts in a releasable manner;
In order to release the suction of the sheet-like paper receiving plate by the locking member, a hole is provided in the main body so as to be inserted between the housing and the support member when the paper feed cassette is moved to the first position. A paper feeding device characterized by comprising a release member that is released.