KR19980063570U - Copier paper loading and unloading device - Google Patents

Abstract

The present invention relates to a copy paper loading and unloading apparatus of a copying machine. When the cassette 10 enters a predetermined amount into the housing portion 3 of the main body 2, the cassette 10 is operated by contact with the main body 2, 10. A copy paper loading and unloading apparatus of a copying machine which rotates a support plate 11 of 10) and elastically loads copy paper stacked on the support plate 11 onto a copy paper conveying apparatus 20. On the front one side of the slider 10, while moving forward or backward, pressing the support plate 11 of the cassette 10 to lock the rotation of the support plate 11 or to be provided to be separated from the support plate 11 and And a structure having an elastic member 50 which supports the slider 40 in a spring-loaded manner, when the cassette 10 is pulled out from the main body 2 accommodating portion 3, the support plate 11 downwards to its own weight. Rotate and retract the slider 40 to be seated on the bottom of the cassette 10. In this connection operation, the front end of the slider 40 is moved to one upper portion of the support plate 11 by the elastic member 50 to prevent the support plate 11 from rotating, and the main body 2 receiving portion 3 When the cassette 10 is mounted in the cassette 10, the slider 40 is retracted at the end of the point at which the copy paper is located at the lower end of the conveying device 20, that is, at the end of the cassette 10 is fully loaded. Since the copy paper is loaded correctly by releasing the locked state of 11), the copy paper is prevented from being caught by the feeder when the cassette is loaded.

Description

Copier paper loading and unloading device

The present invention relates to a copying paper loading and unloading device of a copying machine, and before the cassette on which the copying paper is stacked is completely attached to the copying machine body, the support plate on which the copying paper is mounted is not raised by a malfunction. The present invention relates to a copy paper loading and unloading apparatus of a copying machine suitable for preventing the paper from being incorrectly loaded and a paper jam caused by the copy paper.

Generally, the copying machine includes a cassette 10 for loading and unloading the copying paper 1 into the copying machine body 2 in a state in which copying papers 1 of various sizes are stacked, as shown in FIG. 1. Is equipped with a plurality of, and the transfer device 20 for transferring the copy paper 1 loaded from the cassette 10 is provided, the operation for loading the copy paper 1 to the transfer device 20 When the cassette 10 on which the copy paper is stacked enters the accommodating portion 3 of the copier main body 2, the cassette 10 on one side of the cassette 10 is loaded by a predetermined copy paper loading and unloading device installed on the cassette 10. The support plate 11 is raised so that one end of the uppermost copy paper 1 is tightly adhered to the lower end of the Nudger roll 21 of the feeder 20. Then, when the user commands to copy, the feed roll 21 The rotation is carried out by a pair of feed rolls 22 and a plurality of copy sheets provided on the side of the copy sheet. It is made to convey to the retarder roll 23 which prevents conveyance.

2, 3 and 4 are shown in detail showing the copy paper loading and unloading apparatus of the above, the conventional copy paper loading and unloading device 30 is a cassette 10 is the main body (2) When a predetermined amount is entered into the), it is operated by contact with the main body 2 to flexibly support and rotate the support plate 11 of the cassette 10. More specifically, the cassette 10 It is provided with a lever member 13 adhered to the hinge shaft 12 at the bottom of the front part, and has a bullet member 14 connected to the lever member 13, and is connected to the bullet member 14, and a cassette. (10) Rotatingly arranged on the bottom surface is provided with a rotating member (15) for supporting the bottom surface of the support plate (11) inside the cassette (10) with the pivoting plate (15a), the support plate (11) on the top Copy paper is laminated to the inside of the cassette 10, the side end is hinged so as to rotate There.

In the copy paper loading and unloading apparatus as described above, the cassette 10 is attached to the copying machine, and the cassette 10 is pushed into the housing portion 3 of the copying machine main body 2 to reach the point of completion of the mounting. One side of the lever member 13 is caught by the protruding portion 3a in the accommodating portion 3 so as to rotate about the hinge shaft 12 to extend the elastic member 14. When the rotating member 15 rotates with the elastic force of the rotating plate 15a, the rotating plate 15a rotates the support plate 11 upward through the hole 16 in the bottom surface of the cassette 10. Then, the copy paper stacked on the support plate 11 is brought into close contact with the lower end of the feed roll 21 by the elastic force of the elastic member 14 so that the copy paper is loaded.

In the operation for separating the cassette 10 from the copier main body, when the cassette 10 is pulled out from the housing portion 3, the lever member 13 is released from the housing portion 3, and the elastic member (the tension member) that is tensioned thereto ( The rotating member 15 is rotated downward by the restoring force 14), and the supporting plate 11 is rotated downward by its own weight, thereby completing the unloading operation.

In order to accurately load the end of the copy paper onto the feed roll 21 in this operation process, the lever member 13 is rotated at an optimum time corresponding to the entry of the cassette 10, that is, The point of contact between the protrusion 3a and the lever member 13 must be set very accurately to prevent a malfunction. In the conventional copy paper loading and unloading apparatus as described above, the lever member 13 and the protrusion 3a are provided. ), Cassette 10, and the like, and because they are assembled with predetermined relative positions, respectively, it is very difficult to ensure the precision of the device due to manufacturing tolerances of each member and accumulation tolerances of assembly positions thereof. There is a problem.

Due to this problem, when the operation point of the lever member 13 and the rotation member 15 connected thereto is accelerated, the supporting plate 11 is raised before the copy paper 1 reaches the lower end of the paper feed roll 21 in FIG. Thus, the copy paper 1 is creased and creased by the feed roll 21, which causes a problem of paper jams. To solve this problem, the operation point of the lever member 13 and the rotation member 15 is eliminated. In this case, the distance for pushing the lever member 13 to the protrusion 3a of the housing part 3 is shortened, so that the force for pulling the elastic member 14 is reduced, thereby reducing the force for raising the support plate 11. As a result, there has been a problem that a poor transfer of the copy paper 1 occurs as the copy paper 1 cannot be brought into close contact with the feed roll 21 with a desired force.

In addition, in order to mount the cassette 10 to the main body 2 after filling the copy paper, the user grips both sides of the cassette 10 with both hands, and in this case, a general user who is not a copy machine expert (10) If it is mounted without recognizing pressing down the rotating plate 15a of the bottom surface, the rotating plate 15a is rotated up slightly and the support plate 11 is rotated upward accordingly, so that the copy paper 1 is rotated as described above. There was a problem that interferes with the paper feed roll 21.

The present invention has been devised to solve the above problems, the support plate is not rotated until the cassette is completely mounted in the receiving port of the copier so that the copy paper stably enters the lower end of the feed roll, the support plate also by the user It is an object of the present invention to provide a copy paper loading and unloading device of a copying machine which prevents the malfunction of the copy paper and prevents a paper jam caused by the malfunction.

The present invention for achieving the above object is that when the cassette enters a predetermined amount in the receiving portion of the main body, it is operated by contact with the main body by rotating the support plate of the cassette to transfer the copy paper laminated on the support plate In the copy paper loading and unloading apparatus of the copier for elastically close loading to the apparatus, to press the support plate of the cassette while moving forward or backward on the front side of the cassette to lock the rotation of the support plate or to be separated from the support plate. The slider is provided with an elastic member for supporting the slider. When the cassette is withdrawn from the main body accommodating portion, the support plate rotates downward to its own weight, retracts the slider and rests on the bottom of the cassette. The front end of the slider is supported by the elastic member in the connecting operation It is moved up to one side and prevents the rotation of the support plate by the rotating member even when the conventional lever member and the ball spring are operated, and when the cassette is mounted in the main body accommodating, when the copy paper is located at the bottom of the conveying device, that is, At the end of the time when the cassette is completely mounted, the slider is retracted to release the locking state of the support plate, thereby stably and accurately loading the copy paper.

Figure 1 is a schematic front view showing a conventional general copier and the concept of transporting copy paper thereof

Figure 2 is a perspective view showing the configuration of a conventional copy paper loading and unloading apparatus

3 is a plan view of FIG.

4 is an enlarged left side view of FIG. 3;

5 is a perspective view of the copy paper loading and unloading apparatus of the present invention;

Figure 6 is a plan view of the main part of Figure 5 for the copy paper loading and unloading apparatus of the present invention;

FIG. 7 is a cross-sectional view taken along the line A-A of FIG. 6 showing the copy paper loading and unloading apparatus of the present invention and a supporting plate thereof locked by a slider.

8 is a cross-sectional view taken along the line A-A of Figure 6 showing a state in which the support plate is released from the slider to load the copy paper according to the present invention

Explanation of symbols for main parts of the drawings

2: body 3: storage

3b: stop 10: cassette

11: support plate 18: guide plate

20: feeder 40: slider

41: body 42: stone pieces

43: pressing portion 44: inclined surface

50: elastic member 60: cap

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 in the prior art will be described with the same reference numerals, and repeated description thereof will be omitted.

As shown in FIGS. 5 to 8, when the cassette 10 enters a predetermined amount into the housing 3 of the main body 2, the present invention is operated by contact with the main body 2 so that the cassette 10 may be moved. An apparatus for pivotally loading the copy paper stacked on the support plate 11 onto the copy paper transporting device 20 by rotating the support plate 11, wherein the hinge shaft 12 is disposed on the bottom surface of the front portion of the cassette 10. Is connected to the lever member 13, the elastic member 14 connected to the lever member 13, and the elastic member 14 connected to the lever member 13. Copy paper loading and unloading of a conventional copier having a rotating member 15 pivotally arranged on the bottom of the cassette 10 and supporting the bottom surface of the support plate 11 inside the cassette 10 with the pivoting plate 15a. In the apparatus, the slab is released from the support plate 11 to lock the rotation of the support plate 11 by pressing the support plate 11 of the cassette 10. It comprises a provider (40), the elastic slider (40) support configured with an elastic member 50 for.

The slider 40 locks the rotation of the support plate 11 or moves away from the support plate 11 by pressing the support plate 11 while moving forward and backward of the cassette 10 so that the support plate 11 can rotate. By releasing, the upper end of the cassette 10 slightly protrudes, and the front end is installed so as to move until a predetermined amount overlaps on one side of the support plate 11.

The elastic member 50 is installed at the rear end of the slider 40 to provide a force to support the slider 40 to move forward.

The cassette 10 enters one side of the accommodating part 3 so that the copy paper on the support plate 11 is in contact with the tip of the slider 40 at a point located at the lower end of the transfer device 20. A stop piece 3b is formed so that the slider 40 is released from the support plate 11 (see FIG. 7).

At this time, the tip of the slider 40 and the stop piece 3b of the housing portion 3 have the slider 40 and the stop piece 3b after an operation for voluntarily upwardly rotating the support plate 11 is started. ) Is positioned so that a close contact is made so that before the cassette 10 is completely mounted in the main body 2, the receiving portion 3, that is, the copy paper of the cassette 10 21) Even if the lever member 13 and the bullet spring () are operated before being located at the lower end, the rotating plate 15a of the rotating member 15 cannot rotate the support plate 11, and thus the cassette 10 The support plate 11 is rotated upward before the entry is completed, and the problem that the copy paper 1 is caught by the paper feed roll 21 is solved. In the illustrated embodiment, the slider 40 is provided with a protrusion 42 protruding upward from the body 41 so that the protrusion 42 protrudes from the flat hole 10a of the cassette 10 so that the stop piece 3b is provided. To contact.

In addition, the copy paper loading and unloading apparatus of the copier of the present invention, an operation of releasing the slider 40 so that the support plate 11 is rotated downward when the cassette 10 is pulled out, and is thus pivoted downward so that the bottom of the cassette 10 In order to automatically move the slider 40 over the support plate 11 seated on the support plate 11, a pressing portion 43 protruding from the body 41 is formed at the front lower side of the slider 40, so The part 43 penetrates through the longitudinal hole 10b of the cassette 10 and presses one side of the support plate 11. For this purpose, the pressing part 43 is inclined to which one end of the support plate 11 contacts. Equipped with 44. And, in the illustrated embodiment is provided with a protruding jaw 17 for pressing the pressing portion 43 on one side of the support plate (11).

Therefore, when the support plate 11 is rotated downward by its own weight when the cassette 10 is separated from the main body 2, the side end of the support plate 11 is pushed by the slider 40. The support plate 11 is seated on the bottom of the cassette 10 by overcoming the elastic force of the elastic member 50 supporting the slider 40 in close contact with the inclined surface 44 of the slider 40 and retreating the slider 40. The slider 40, which has been retracted by the connecting operation, is advanced again by the force of the elastic member 50, and the pressing portion 43 is moved by a predetermined amount over the protruding jaw 17 of the support plate 11, The operation of locking the rotation is made automatically.

In addition, the cassette 10 is formed with a guide plate portion 18 for receiving the slider 40, and configured to guide the movement of the slider 40 in the guide plate portion 18, and the guide plate portion ( 18 is provided with a cap 60 for blocking the guide plate 18.

In the illustrated embodiment, the cap 60 has a structure in which a plurality of clip pieces 61 are formed, and the clip pieces 61 are inserted into and fastened to the engaging holes 18a of the guide plate 18.

The copy paper loading and unloading apparatus of the copying machine according to the present invention configured as described above is an operation for filling copy paper into the cassette 10 as shown in FIGS. 3 and 5 to 8. When the withdrawal from the main body 2 accommodating part 3 is released, the lever member 13 is released from the protruding part 3a of the accommodating part 3. The rotating plate (15a) of the () is restored downward, wherein the support plate 11 in the cassette 10 is rotated downward by its own weight.

In this way, during the operation of the support plate 11 pivoting downward, the protruding jaw 17 side end of the support plate 11 comes into close contact with the inclined surface 44 of the pusher 43 of the slider 40. The elastic force of the elastic member 50 supporting the slider 40 is overcome to retreat the slider 40 so that the support plate 11 is seated on the bottom of the cassette 10. In this way, immediately after the support plate 11 is seated on the bottom of the cassette 10, the slider 40, which has been retracted, is advanced again by the force of the elastic member 50, and the pressing portion 43 protrudes from the support plate 11. A predetermined amount is moved above the jaw 17 to automatically lock the rotation of the support plate 11 (see FIGS. 6 and 7).

When the support plate 11 is locked to the bottom of the cassette 10 in this manner, the copy paper is laminated on the support plate 11 and then pushed back into the housing part 3 of the main body 2. Even if the user presses the lower end of the rotation member 15 in the process, since the support plate 11 is locked by the slider 40 as described above, the support plate 11 is raised before the slider 40 is operated. Since it cannot be rotated, a phenomenon in which the copy paper is raised in advance due to a malfunction of the support plate 11, that is, the upward rotation of the support plate 11, which occurred conventionally at the initial stage of mounting the cassette 10, does not occur.

Continuously pushing the cassette 10 into the main body 2 accommodating portion 3 continuously in the above-described operation, and reaching the end just before completion, the copy paper is automatically loaded into the lower end of the paper feed roll 21. In the present invention, the contact point of the protrusion piece 42 of the slider 40 and the stop piece 3b of the accommodating part 3 is after the starting point of the upward movement of the rotation member 15, that is, the protrusion part 3a of the accommodating part 3a. And the progression after the contact point of the lever member 13, before the cassette 10 enters and the copy paper 1 on the support plate 11 is completely positioned at the bottom of the feed roll 21. The lever member 13 is in contact with the protrusion 3a of the accommodating part 3 to operate the shot member 14 and the rotation member 15. However, in this case, since the support plate 11 cannot be rotated by the slider 40, the pivot member 15 can no longer rotate while being in contact with the support plate 11 when the lever member 13 is rotated. Only the length of (14) is stretched slightly.

According to this operation, the copy paper cannot be loaded until the copy paper completely enters the lower end of the feed roll 21 of the feeder 20, and finally the cassette 10 enters the copy paper to feed the feed roll ( At the end of the time when it is precisely positioned at the lower end of the 21, the protrusion piece 42 of the slider 40 touches the stop piece 3b of the housing part 3, and when the cassette 10 is further entered, the slider 40 Then, the pressing portion 43 is separated from the protruding jaw 17 of the support plate 11. At this time, the rotating member 15 is rotated upward by the tension of the elastic member 14 that has been pulled in advance, and the support plate 11 is rotated upward to raise the copy paper (see FIG. 8), thereby lowering the feed roll 21. It will be loaded in close contact. Therefore, the conventional problem that the copy paper is loaded before it is completely positioned at the bottom of the feed roll 21 does not occur.

As described above, according to the copy paper loading and unloading apparatus of the copier according to the present invention, since the cassette is completely mounted in the receiving port of the copier, the support plate is prevented from rotating before the copy paper stably enters the lower part of the transfer apparatus, so that the copy paper There is an effect of providing a stable copier that can prevent the loading of the paper in the feeder and the resulting paper jam.

Claims (4)

When the cassette 10 enters the storage portion 3 of the main body 2, the cassette 10 is operated by contact with the main body 2 to rotate the support plate 11 of the cassette 10 and onto the support plate 11. In the copy paper loading and unloading apparatus of the copier for elastically loading the copy paper stacked on the copy paper transfer device 20, Slider 40 is provided on one front side of the cassette 10 to lock the rotation of the support plate 11 or to move away from the support plate 11 by pressing the support plate 11 of the cassette 10 while moving forward or backward. ), An elastic member 50 that supports the rear end of the slider 40 to provide a force to be moved forward to the slider 40, At the point where the cassette 10 enters and the copy paper on the support plate 11 is located at the lower end of the transfer device 20, the end of the slider 40 is pushed to release the slider 40 from the support plate 11. Copy paper loading and unloading apparatus of the copier characterized in that it comprises a stopper (3b) formed on one side of the receiving portion (3). The method of claim 1, The tip 3 of the slider 40 and the stop piece 3b of the housing portion 3 are formed of the slider 40 and the stop piece 3b after an operation for voluntarily upwardly rotating the support plate 11 is started. Copy paper loading and unloading apparatus of the copier characterized in that the position is set so that the close operation. The method of claim 1, The pressing portion 43 protruding from the body 41 is formed at the front lower side of the slider 40 so as to press one side of the supporting plate 11 with the pressing portion 43, When the support plate 11 is rotated downward by its own weight when the cassette 10 is separated from the main body 2, the support plate 11 overcomes the elasticity of the elastic member 50 and the slider By retracting the 40 to be seated on the bottom of the cassette 10, and at the same time, the slider 40, which has been retracted by the connecting operation thereof, is moved by a predetermined amount back onto the support plate 11 by the force of the elastic member 50, thereby supporting the support plate ( 11) Copy paper loading and unloading apparatus of the copier, characterized in that the inclined surface (44) contacting one end of the support plate 11 is formed so that the operation of locking the rotation of the automatic. The method of claim 1, The cassette 10 is formed with a guide plate portion 18 for receiving the slider 40, so that the movement of the slider 40 is guided in the guide plate 18, and the guide plate portion 18 Copy paper loading and unloading apparatus of the copier characterized in that it comprises a cap (60) for blocking the guide plate (18).