KR200214516Y1 - Apparatus for suppluing paper of office automated machine - Google Patents

Abstract

The present invention relates to a paper feeder of an office equipment, the pickup assembly for picking up the loaded paper is rotatably installed on the paper outlet side of the paper stack, the pickup assembly is a pickup shaft rotated by the drive motor as a drive source, the pickup shaft Pick-up roller formed at the outer periphery, gears formed at the outer periphery, left and right ends fixed to the pick-up shaft, an idle gear support with a central portion axially spaced apart from the pick-up roller, and an idle gear coupled to the center of the idle gear support. And a pickup belt wound around the pickup roller and the idle gear.

According to the present invention configured as described above, when a feeding command is applied, the pickup shaft is rotated by the rotational force of the driving motor. At this time, when the pickup belt and the paper do not contact, the pickup belt rotates around the pickup shaft. In this way, if the pickup belt and the paper is in contact with the pickup belt is not rotated, it is rotated by the drive gear and the idle gear to pick up the paper.

As a result, since the pickup belt rotates to maintain friction with the paper, the friction between the pickup belt and the paper is maintained regardless of the loading amount of the paper, so that the paper can be picked up smoothly, and noise is not generated.

Description

Paper feeder for office equipment {APPARATUS FOR SUPPLUING PAPER OF OFFICE AUTOMATED MACHINE}

The present invention relates to a paper feeder for office equipment, and more particularly, to a paper feeder for the office equipment to be able to pick up the paper smoothly by maintaining the friction between the pickup assembly and the paper regardless of the amount of paper loaded.

In general, office automation equipment such as printers and fax machines using plain paper is provided with an automatic paper feeder for feeding paper into an image forming unit.

As shown in FIG. 1, the automatic sheet feeder includes a main frame 1, a paper stack 2 disposed on one side of the main frame 1, on which paper is loaded, and a sheet of paper stack 2. It is disposed on the outlet side and is rotated by the drive motor (not shown) as a driving source, the pickup assembly (3) for picking up the paper loaded in the paper stack (2), and is installed in the paper stack (2), and the paper sheet It comprises a pad (4) for separate selection, the pickup assembly (3) is coupled to the pickup shaft 31 and the pickup shaft 31 at a predetermined distance to the left and right, respectively, integrally with the rotary shaft (31) It is made of a pickup roller 32 of rubber material to pick up the paper while being rotated.

Referring to the operation state of the paper feeder according to the prior art configured as described above are as follows.

When the feeding mode is selected, the pickup shaft 31 is rotated in the pickup direction by the drive motor, and the pickup roller 32 is integrally rotated with the pickup shaft 31 to pick up and transport the paper by the frictional force with the paper. .

When the paper detection sensor (not shown) detects the pickup of the paper, the controller (not shown) stops the driving of the pickup shaft 31 by cutting off the current applied to the driving motor.

However, in the paper feeder of the conventional office equipment, the pickup roller 32 picks up the paper by the frictional force with the paper. If the paper stack 2 is loaded with enough paper, the pick-up roller 32 picks up the paper. Since the friction force between the roller 32 and the paper is large, the paper can be picked up smoothly. However, if the frictional force between the pickup roller 32 and the paper is small due to the small amount of paper, the paper cannot be picked up or the paper feeding is delayed. There was a problem of deterioration.

In order to solve this problem, there is provided an apparatus for supporting the paper stack 2 toward the pickup roller 32 to maintain the friction force between the pickup roller 32 and the paper. There was a problem that the efficiency is lowered.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a paper feeding device of an office equipment to maintain a frictional force between the paper and the pick-up assembly, regardless of the amount of paper loaded to achieve a smooth feeding operation.

Another object of the present invention is to prevent noise from being generated when the friction force is maintained between the paper and the pickup assembly for pickup of the paper.

1 is an external perspective view showing a typical paper feeder.

Figure 2 is an external perspective view of the pickup assembly applied to the paper feeding apparatus according to the prior art.

Figure 3 is an external perspective view of an embodiment according to the present invention.

Figure 4 is a perspective view of the main portion of the pickup assembly applied to the embodiment according to the present invention.

5 is an exploded perspective view of the support applied to the embodiment according to the present invention.

6a and 6b show the operating state of the pickup assembly applied to the embodiment according to the present invention,

6A is a side view showing an operating state before contacting paper;

6B is a side view showing an operating state of contacting the paper and picking up the paper.

<Description of the symbols used in the main parts of the drawing>

1: main frame 2: paper stack

4 pad 5 pickup assembly

51: pickup shaft 52: drive gear

53: children gear 54: pickup belt

6: Idle Gear Support

The paper feeding device of the office device of the present invention for achieving the above object, the main frame, a paper stack formed on one side of the main frame, the paper stack is loaded, and the paper outlet of the paper stack can be rotated In the paper feeder of the office equipment comprising a pickup assembly for picking up the paper,

The pickup assembly includes a pickup shaft rotated using a drive motor as a driving source, a drive gear coupled to the pickup shaft, and both ends coupled to the pickup shaft, and an idle center portion of which is bent from the drive gear in a axial direction. A pick-up belt wound around a gear support, an idle gear coupled to a center portion of the idle gear support, the drive gear and the idle gear and being picked up by the drive gear and the idle gear by rotation of the drive gear. Characterized in that the made up.

The idle gear support is formed by the coupling of the left and right support bar formed separately, the fixing protrusion is formed on one side of the first support bar, the fixing groove is formed on one side of the second support bar is fixed fixing protrusion It is preferable.

Preferably, each of the support bars is provided with a positioning part for maintaining the position of the seated idle gear.

A protrusion for preventing rotation is formed on an outer circumferential portion of the fixing protrusion of the first support bar, and a groove in which the protrusion is fitted is formed on the second support bar.

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

Figure 3 is an external perspective view showing an embodiment according to the present invention, Figure 4 is an exploded perspective view of the main portion of the pickup assembly applied to the embodiment according to the present invention, Figure 5 is an exploded perspective view of the support applied to the embodiment according to the present invention. 6A and 6B illustrate an operating state of the pickup assembly applied to the embodiment according to the present invention, and FIG. 6A illustrates a state before the pickup belt and the paper are in contact with each other. The paper is in contact and shows the state of picking up the paper. For convenience of description, the same member numbers are assigned to the same constituent members as in the prior art.

As shown in the drawing, the paper feeding apparatus of the office device of the present invention includes a main frame 1, a paper stack 2 formed on one side of the main frame 1, on which paper is loaded, and a paper stack 2 A pickup assembly (5) for picking up the loaded paper while being rotated by using a driving motor (not shown) as a driving source, and a pad attached to the paper stack (2) to guide the paper to be picked up in a single sheet. The pickup assembly 5 includes a pickup shaft 51 connected to the drive motor, a drive gear 52 spaced apart from the pickup shaft 51 at a predetermined distance from side to side, and both left and right ends thereof. Idle gear support 6, which is disposed on both sides of the drive gear 52 and fitted to the pickup shaft 51, and is bent so that the center portion is spaced apart from the pickup shaft 51 by a predetermined distance, and the central portion of the idle gear support 6 Idle gear (53) coupled to idle rotation, and It is composed of a pickup belt 54 wound around the synchronous gear 52 and the idle gear 53 and having cogs 54a formed on the inner circumferential surface thereof to engage the gears 52 and 53.

The idle gear support 6 is formed by coupling the first support bar 61 and the second support bar 62 on both the left and right sides, and the pickup shaft 61 is formed at one end of each support bar 61 and 62. Ring-shaped fixing portions 61a and 62a respectively fitted to the respective ends are formed, and fixing protrusions 61b and grooves 62b are formed and fixed to the other end, respectively.

In addition, a protrusion 61c is formed at an outer circumferential portion of the fixing protrusion 61b of the first supporting bar 61 to prevent the twist between the supporting bars 61 and 62, and the fixing groove of the second supporting bar 62. A groove 62c into which the projection 61c is fitted is formed in the outer peripheral portion of the 62b.

In addition, positioning jaws 61d and 62d for holding the seated idle gears 53 are formed at positions spaced apart from the other end of each of the supporting bars 61 and 62 by a predetermined distance.

Referring to the working state of the embodiment according to the present invention configured as described above are as follows.

When the feeding command is applied, the pickup shaft 51 is rotated by the driving force of the drive motor. At this time, as shown in FIG. 6A, when the pickup belt 54 and the paper are not in contact with each other, the rotation force of the pickup shaft 51 is applied. This causes the pickup belt 54 to rotate about the pickup shaft 51.

6B, the pickup belt 54 and the paper come into contact with each other. In this case, the pickup shaft 51 continues to rotate, but the pickup belt 54 is moved by the paper. ), The pickup belt 54 is rubbed with the paper at a predetermined pressure by a rotational force for rotating the pickup belt 54 in the paper direction.

In this case, the pickup belt 54 is slid in the feeding direction by the drive gear 52 and the idle gear 53 to pick up the paper.

To describe this operation in more detail, the pickup gear 52 engaged with the cog 54a of the pickup belt 54 pushes the pickup belt 54 in the feeding direction while rotating integrally with the pickup shaft 51. The belt 54 is continuously rotated by the pickup belt 54 and the idle gear 53 while being supported by the idle gear support 6. That is, the drive gear 52 is rotated by the rotational force of the pickup shaft 51, and the pickup belt 54 is moved by the rotational force of the drive gear 52, whereby the idle gear 53 is idle. Idle rotation of the gear support 6 to guide the rotation of the pickup belt (54).

The idle gear 53 is supported by the idle gear support 6, and also maintains the position set in the idle gear support 6, thereby stabilizing the rotation operation of the pickup belt 54.

When the loaded paper is picked up and transported by this action and detected by the paper sensor, the control unit imparts a negative polarity to the driving motor to reversely rotate the pickup shaft 51. In this case, the pickup belt 54 Since there is no structure for restraining the reverse rotation of the pick-up belt, the pick-up belt 54 is reversely rotated about the pick-up shaft 51 so as not to contact the paper.

Therefore, if the pick-up belt 54 and the paper do not contact during feeding, the pick-up belt 54 is rotated and the paper comes into contact so that the friction force with the paper can be maintained irrespective of the amount of paper loaded. Failure to pick up paper or to pick up paper smoothly is prevented.

In addition, in order to maintain the friction force with the paper while the pickup belt 54 is rotated conventionally, the paper stacking table is moved to generate noise, but according to the present invention, the pickup belt 54 is rotated toward the paper side to reduce the friction force with the paper. No noise is generated because of maintaining

As described above, according to the paper feeding device of the office device according to the present invention, the friction between the pick-up belt and the paper is maintained regardless of the amount of paper loaded, so that the paper can be picked up smoothly, thereby maintaining normal print quality. .

In addition, since noise is not generated during the pickup of the paper, it is possible to improve the reliability of the product.

Claims (4)

In the paper feeder of the office equipment comprising a main frame, a paper stack formed on one side of the main frame, the paper stack on which the paper is loaded, and a pickup assembly rotatably installed on the paper outlet side of the paper stack to pick up the paper. In The pickup assembly includes a pickup shaft that is rotated by using a drive motor as a driving source, a pickup roller coupled to the pickup shaft, and having gears formed at an outer circumference thereof, both ends of which are coupled to the pickup shaft, and a central portion of which is axially separated from the pickup roller. An idle gear support bent to be spaced apart, an idle gear coupled to a center portion of the idle gear support, and wound around the pickup roller and the idle gear and rotated by the pickup roller and the idle gear by the rotation of the pickup roller. Paper feeder for office equipment comprising a pickup belt for picking up. According to claim 1, wherein the idle gear support is made by the coupling of the left and right support bar formed separately, the fixing protrusion is formed on one side of the first support bar, the fixing protrusion is fixed on one side of the second support bar Paper feeder of the office equipment, characterized in that the fixing groove is formed. The paper feeder of claim 2, wherein each support bar is provided with a positioning unit for maintaining the position of the seated idle gear. According to claim 2 or 3, wherein the outer periphery of the fixing projections of the first support bar is formed with a projection for preventing rotation, the second support bar is characterized in that the groove is formed in which the projection is fitted Feeder of the machine.