KR200174357Y1 - Fixing apparatus of idle roller of oa machine - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

A technology related to an idle roller fixing device for fixing an idle roller provided to minimize weight when moving paper in office equipment.

2. The problem that the invention is intended to solve

Since the roller support for supporting the roller shaft is separated inside the roller storage port for fixing the idle roller, the roller support is damaged by external impact, and the empty space formed between the roller storage port and the idle roller rotating part is large, When the moving paper sags downward, the paper is jammed and damaged, and the small size of the protrusion is formed in the state where the upper and lower molds are engaged, so that the mold is severely worn, the durability is poor, and the processing is difficult. Will occur.

Therefore, the roller storage port is configured in a small size to accommodate only the rotating surface of the idle roller to prevent the struck paper from being inserted, and the roller shaft is integrally formed on the bottom plate without any protrusions, and thus is not damaged by external impact. In order to simplify the structure of upper and lower molds, it provides a idler roller fixing device for office equipment with short time, low cost, and improved durability in use.

3. Summary of solution of design

An idle roller fixing device of an office equipment, which is provided on the bottom plate to easily move the loaded paper, and which fixes idle rollers having integrally integrated roller shafts on both sides thereof, comprising: a roller storage slot into which a rotating part of the idle roller is inserted; ; An axis storage slot formed on the side of the roller housing and inserted into the roller shaft to be freely rotated, and formed at intervals smaller than the diameter of the roller shaft at a position higher than the accommodated roller shaft, and having a tensioning protrusion integrally formed therein; And it provides an idle roller fixing device of the office equipment having a cutting groove cut in parallel to the fixing projections on the back of the surface formed with the fixing projections.

4. Important uses of the devise

It is used to configure the fixing device to fix the idle roller provided on the bottom plate of office equipment, to minimize the empty space, to easily process the mold to be manufactured, and to increase the durability of mold use.

Description

Idle roller fixing device for office equipment

The present invention relates to an idle roller fixing device used to facilitate the conveyance of a plurality of sheets in office equipment such as copiers, laser printers, fax machines, and the like, and more particularly, to an idle roller fixing device having a smaller and simpler configuration.

Idle rollers are formed on the bottom plate to transfer the sheets of paper from the office equipment to minimize the load generated during the paper transfer. That is, as an example, paper is loaded on the paper feeder side and the rear end side, and the paper loaded on one side is transferred to another part, as in the TANDEM paper feed tray having double paper loading capacity as one paper feeder. In order to minimize the load in the process using a plurality of idle rollers on the bottom plate, the idle roller provided on the bottom plate is generally configured to be positioned higher than the idler roller (3) upper side than the base plate 1, as shown in FIG. The paper is placed on the upper side of the idle roller (3) is configured to move, and if the paper (2) is moved in the 'ga' direction of the drawing, the idle roller (3) also rotates in the same direction 'I' direction This minimizes the load on the movement of the paper.

As such, idler rollers used in office equipment are generally configured to fix the idler rollers by fixing them on the bottom plate, and these idler roller holders reduce manufacturing costs and facilitate assembly by avoiding the use of separate parts as much as possible. In order to increase the workability, it is usually configured integrally on the base plate using a mold of plastics.

Referring to Fig. 2, the idler roller fixing device formed on the bottom plate of the office equipment is provided on the bottom plate 1 of the office equipment to accommodate the idler rollers 3 formed integrally with the roller shafts 3a extending on both sides. The roller storage port 4 is configured, but the roller support 5 is integrally formed at a position corresponding to the roller shaft 3a on the bottom surface thereof.

At this time, the roller support (5) constitutes a shaft insertion hole (5a) that the roller shaft (3a) is inserted into the upper side is configured to rotate freely while fixing only the position of the roller shaft (3a), In order to prevent the roller shaft 3a which is inserted and rotates freely from being separated from the shaft insertion hole 5a, the tension is higher than the height at which the roller shaft 3a is inserted and positioned inside the shaft insertion hole 5a. The fixed projection 5b which rotates by is comprised integrally.

Therefore, in the assembling work, the operator places the roller shafts 3a formed on both sides of the idle roller 3 in the shaft insertion hole 5a of the roller support 5, and presses them downward to fix the fixing projections 5b. Is pushed backward and the roller shaft 3a is inserted, and once the roller shaft 3a is inserted, the fixing projection 5b is returned to its original position by tension, so that the width of the shaft insertion hole 5a is reached. By narrowing the width, the roller shaft 3a is prevented from being separated during use.

However, the idler roller fixing device configured as described above should be large in size because the roller supporter 4 has to be configured with the roller support 5 to which the roller shaft 3a is inserted and fixed. The roller support 5, which is formed long upward, is broken even by a small force, and since the fixing protrusion 5a must be integrally formed on the roller support 5, the incision hole 6 is configured to allow the lower mold to escape. At this time, since the size of the fixing protrusion (5a) is fine, very precise processing is required to process the mold so that the upper mold and the lower mold mesh to form a shape, the mold manufacturing cost is high, the processing time of the mold This long, slight mold change prevents the mold from being used.

As described above, the idler roller fixing device integrally with the bottom plate of the office equipment is configured to protrude from the bottom plate 11 so that the roller support 5 for fixing the roller shaft 3a is easily damaged by an external impact, and the roller storage port ( 4) is to be inserted into the roller shaft (3a), larger than the rotation surface of the idle roller (3), foreign matter is inserted or moved into the empty space generated between the roller storage port (4) and the idle roller (3) When the paper 2 is struck, the paper may be inserted into an empty space and the paper may be damaged or the paper may not be moved correctly. The fixing protrusion of the minute size may be formed by the engagement of the upper mold and the lower mold. Therefore, the mold processing time is long, the cost is high, and the durability of the mold is inferior.

Therefore, the present invention is to configure the idler roller fixing device to the bottom plate of the office equipment to overcome the above problems, by configuring the roller storage port to a small size that only the rotating surface of the idler roller is inserted to prevent the paper from being struck. Since the roller shaft is integrally formed on the base plate without any protrusions, it is not damaged by external impacts. In manufacturing, it is possible to simplify the structure of the upper mold and the lower mold, so that the processing time of the mold is short, and the cost is low. The purpose is to provide an idle roller fixing device of the office equipment with improved durability.

1 is an idle roller use state of a typical office equipment,

Figure 2 is a block diagram of an idle roller fixing device of a conventional office equipment,

Figure 3 is a block diagram of an idle roller fixing device of the office equipment according to the present invention,

Figure 4 is a side cross-sectional view of the main part of the idle roller fixing device according to the present invention,

5 is a manufacturing flowchart of the idle roller fixing device according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 11: base plate 2, 12: paper

3, 13: idler roller 4, 14: roller storage port

15: shaft storage port 15a: fixing projection

15b: shaft support piece 6, 16: incision hole

17: bottom hole 18: lower mold

19: upper mold 19a: protrusion groove

The present invention is provided on the bottom plate to easily move the paper loaded in the office equipment such as copiers, fax machines, printers, offices for fixing idle rollers integrally formed on both sides of the roller shaft An idle roller fixing device of a machine, comprising: a roller receiving opening into which a rotating part of the idle roller is inserted; An axis storage slot formed at a side of the roller housing and inserted into the roller shaft to be freely rotated, and formed at intervals smaller than the diameter of the roller shaft at a position higher than the accommodated roller shaft, and having a tensioning protrusion integrally formed therein; And it provides an idle roller fixing device of the office equipment having a cutting groove cut in parallel to the fixing projections on the rear portion of the surface formed with the fixing projections.

Hereinafter, the present invention will be described in detail with reference to FIGS. 3 to 5.

Figure 3 is a block diagram of the idler roller fixing device of the office equipment according to the present invention, Figure 4 is a side cross-sectional view of the main portion of the idler roller fixing device according to the present invention, Figure 5 is a manufacturing flow chart of the idler roller fixing device according to the present invention. .

In the drawing, 11 is the bottom plate, 12 is the paper, 13 is the idler roller, 13a is the roller shaft, 14 is the roller storage port, 15 is the shaft storage port, 15a is the fixing protrusion, 15b is the shaft support piece, 16 is the cutting hole, 17 is the bottom hole , 18 is a lower mold, 19 is an upper mold, and 19a represents a protrusion groove.

In order to minimize the load generated when moving the paper loaded in the office equipment to configure a fixing device for fixing the idler roller to the bottom plate, as shown in Figure 3 the roller shaft 13a extending to both sides integrally composed of In order to fix the roller 13, the roller receiving opening 14 is formed in the bottom plate 11 of the paper moving part of the office equipment, and only the rotating part of the idle roller 13 except the roller shaft 13a can be accommodated. It is formed, and on both sides of the roller receiving port 14 to form a shaft receiving opening 15 for receiving the roller shaft (13a), the roller shaft (13a) is accommodated in the shaft receiving opening (15) is configured to rotate freely The fixing protrusion 15a is integrally formed at a position higher than the height at which the accommodated roller shaft 13a is located.

At this time, the fixing projection 15a is formed in the shaft storage port 15 is formed in the inner interval is larger than the diameter of the roller shaft 13a so that the roller shaft (13a) is accommodated, the interval between the fixing projections (15a) of both sides The roller shaft 13a is configured to be smaller than the diameter of the roller shaft 13a so as to prevent the stored roller shaft 13a from being separated from the shaft storage port 15 in the usual case.

When the roller shaft 13a is inserted into or removed from the shaft storage port 15, the shaft storage port 15 is formed so that the shaft storage port 15 having the fixed protrusion 15a integrally pushes back by elasticity. When the roller shaft 13a pushes the fixing protrusion 15a by a predetermined force or more, the cutting groove 16 is formed parallel to the fixing protrusion 13a at the rear portion of the surface on which the fixing protrusion 13a is formed. The surface of the shaft receiving opening 15 in which the fixing projection 13a is formed by the tension is pushed back by the free space of the cutting groove 16 so that the roller shaft 13a is inserted or detached, and the roller shaft 13a once. When the force pushing the fixing protrusion 13a by the insertion or detachment is removed, it returns to the original position.

Since the roller shaft 13a rotatably inserted and rotated in the idler fixing device 15 is configured to rotate in the idle roller fixing device configured as described above, the shaft holder 15 and the roller shaft in order to minimize the frictional force generated during the rotation. It is preferable to add a thin circular shaft support piece 15b to the bottom surface of the shaft storage port 15 so as to minimize the contact surface 13a and prevent it from flowing during rotation.

In addition, when the idle roller 13 stored in the roller storage port 14 is to be detached, the idle roller 13 is removed from the upper side because the roller shaft 13a is blocked by the fixing protrusion 15a. Since it is very difficult, the bottom surface of the roller receiving port 14 to form the bottom hole 17 penetrated to the outside to push the idle roller 13 through the bottom hole 17 using a driver or the like to separate It is preferable.

Referring to the state of use of the idle roller fixing device of the office equipment configured as described above, the rotating part of the idle roller 13 is located in the roller storage port 14 formed on the bottom plate 11 of the office equipment, and the shaft storage port 15 When the roller shaft 13a is positioned to correspond to the roller shaft 13a, the roller shaft 13a is placed on the fixing protrusion 15a of the shaft storage opening 15. In this state, pressing the idle roller 13 downwards, A side surface of the shaft storage port 15 formed with the 15a is pushed into the space of the incision hole 16 formed at the rear part, and the roller shaft 13a enters the lower side of the fixing protrusion 15a. As will be across the thin circular shaft support piece (15b).

In this state, when the paper 12 is moved above the idle roller 13, the roller shaft 13a is freely rotated over the shaft support piece 15b, thereby minimizing the load generated when the paper is moved. 15b has a circular shape and prevents the roller shaft 13a from flowing during rotation, and since the shaft holder 15 is integrally formed on the base plate 11, damage due to external impact does not occur. Even if a part of the moving paper 12 is struck, since there is little empty space generated between the roller storage port 14 and the rotating part of the idle roller 13, the paper is hardly jammed. Do not.

When the idle roller 13 stored in the roller storage port 14 needs to be separated, the idle roller 13 may be driven using a driver or a ballpoint pen through a bottom hole 17 formed in the bottom surface of the roller storage port 14. When pushed out, the shaft shaft (15a) formed on the fixing projection (15a) is pushed into the space of the cutting hole 16 formed in the rear portion while the roller shaft (13a) is pushed out of the fixing projection (15a).

Referring to Figure 5 describes the manufacturing process of the idler roller fixing device configured and acts as described above, in order to manufacture the bottom plate using a material of plastics, the upper and lower molds, but the upper mold (19) The projection groove 19a to form the shape of the fixing projections (15a) integrally processed in the forming portion of the shaft receiving opening (15), and the lower mold is to be provided with a portion to form the cutting groove (16).

After the upper mold 19 and the lower mold 18 processed as described above are inserted to form a mold by inserting plastic resin, the lower mold 18 is first detached in the B direction of the incision groove ( 16) this form is formed, the incision portion is formed on the back of the surface of the shaft insertion opening (15) having a fixing projection (15a) is formed. In this state, when the upper mold 19 is separated in the C direction of the drawing, a force pushing back the fixing protrusion 15a formed by the protrusion groove 19a acts, so that the shaft insertion hole with the fixing protrusion 15a ( 15) is pushed back to the incision groove 16 formed in the rear portion is pushed back and the upper mold 19 is released, and after the upper mold 19 is released, it is returned to the original position by the tension to the desired The product can be manufactured.

Therefore, in the present invention, the upper and lower molds are engaged at the portions where the exact dimensions are not required, such as the incision grooves 16, and the portions forming the fixing protrusions 15a requiring fine shapes are integrally processed in one mold. Therefore, it is possible to reduce the time and cost of processing the mold, and it is possible to continue to use even if some of the upper and lower molds are repeatedly engaged during manufacturing, thereby increasing the durability of the mold.

The present invention is configured and acts as described above, the idler roller of the office equipment is fixed, but the roller shaft is directly inserted into the base plate by the roller shaft is not damaged even if an external impact occurs, and the roller storage port and the idle roller Since the empty space formed therebetween is minimal, even if the paper is moved in a partially down state, the paper is almost stuck in the empty space and is hardly caught. Even in this case, since a minute part is directly processed on one side of the mold, it is easier to process the mold compared to the conventional method, thereby reducing the processing time and cost. It is effective to increase durability.

Claims (3)

Office equipment provided on the bottom plate 11 to easily move the paper loaded in office equipment such as copiers, fax machines, printers, etc. and fixing idle rollers 13 having roller shafts 13a extended to both sides integrally. In the idle roller fixing device of A roller housing 14 into which the rotating part of the idle roller 13 is inserted; It is formed on the side of the roller receiving port 14 is inserted so that the roller shaft (13a) is free to rotate, formed in a position smaller than the diameter of the roller shaft (13a) at a position higher than the accommodated roller shaft (13a) to tension An axial storage port 15 having a fixed protrusion 15a which is rotated and formed integrally therewith; And Idle roller fixing device of the office equipment, characterized in that it has a cutting groove (16) cut in parallel with the fixing projections (13a) in the rear portion of the surface formed with the fixing projections (13a). The method of claim 1, The shaft storage port 15, Supporting the roller shaft (13a) at the lower end of the idler roller fixing device for office equipment, characterized in that it further comprises a thin circular shaft support piece (15b) to minimize the contact surface and prevent flow. The method of claim 1, The roller storage port 14, Idle roller fixing device for the office equipment, characterized in that the bottom surface further comprises a bottom hole (17) penetrated to the outside for the separation of the idle roller (13).