KR100200969B1 - Paper supply device for facsimile - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an automatic document feeder of a facsimile, in particular, to fix the feeding rubber and to form a holder so that the free end of the feeding rubber is in contact with the feed roller within a certain angle range to separate the paper to be sent exactly one by one The automatic document feeder can be used.

2. The technical problem to be solved by the invention

The present invention simplifies the assembly structure by molding the holder for fixing the feed lever in close contact with the feed roller in the automatic document feeder, so that the originals can be fed one by one in order to improve the reliability of the machine The present invention provides a facsimile document automatic document feeder.

3. Summary of Solution to Invention

The present invention simplifies the assembly structure to fix the feed rubber which is in close contact with the feed roller to the automatic document feeder and to mold the holder to serve as a leaf spring to separate the original, and to fix it to the frame, A facsimile document feeder that allows you to feed documents one by one in order to improve the reliability of the machine.

4. Important uses of the invention

The present invention is to mold the feed spring to the holder without using a pressing plate and a separate plate spring to simplify the assembly structure to reduce the cost and to obtain the exact force required for feeding the document in order to prevent the duplicate transfer by sending the document sequentially There is an advantage in that it can improve the reliability of the device.

Description

FAX Automatic Document Feeder

The present invention relates to an automatic document feeder of a facsimile, in particular, to fix the feeding rubber and to form a holder so that the free end of the feeding rubber is in contact with the feed roller within a certain angle range to separate the paper to be sent exactly one by one The automatic document feeder can be used.

In the paper feeder for feeding originals from the facsimile, a paper feeder as shown in Fig. 1 was conventionally used. The pressing plate 14 is installed on the front frame 13 of the feed roller 12, which is slightly protruded from the main frame 11, and an end of the pressing plate 14 is smoothly bent upward on the lower side of the pressing plate 14 (15). ) And the paper feed roller 16 with the screw 18 using the plate 17 so that the pressing plate 14 is in surface contact with the paper feed roller 12 within the constant angle range of the free end of the paper feed rubber 16. The front end of the front frame 13 separately installed on the other end of the leaf spring 19 is bent to the upper end of the pressing plate 14 is installed to apply pressure to the other side of the pressing plate (14).

The feeding of the originals is made by the contact of the feeding rubber 16 with the feeding roller 12. When this is explained in more detail, when a plurality of originals lying on the main frame 11 arrive at the separating part, they are not shown. If the detection device does not detect this and the paper feed roller 12 is driven accordingly, only the document located at the bottom of the document is to be sent out. At this time, the leading end of the original paper passes through the first contact position to the plate spring 15 fixed to the pressing plate 14, and then the friction force increases as the original paper contacting length that is in contact with the paper feed roller 12 is increased, so that the original is fed out. . In addition, the upper surface of the original paper that has passed through the separation unit does not come into contact with the feed roller 12 comes into contact with the feed rubber 16 so that the feeding roller 12 has a larger friction force than that of the feed rubber 16. One sheet is always fed one by one without having a sheet or sheet, and the front end surface of the next original is slightly pressured by the curved portion of the end of the leaf spring 15 in order to prevent overlapping.

However, this paper feeder is complex in structure because it installs a paper feeder assembled by screwing using a plate spring and a feed rubber and a plate to prevent the overlapping of paper at the bottom of the pressing plate, the heat treatment or transportation due to the use of the plate spring It may cause a deformation during the operation, and may cause a functional problem.Because a separate leaf spring is installed on the upper side of the pressing plate to provide friction to the feeding rubber and the feeding roller, the pressing position is different depending on the assembly error of the two assemblies. Since the distribution of the pressing force appears differently, there is a problem that the originals are not fed one by one sequentially.

An object of the present invention is to simplify the assembly structure by molding the holder for fixing the feed lever in close contact with the feed roller in the automatic document feeder, so that the documents can be fed one by one in order to improve the reliability of the machine The present invention provides a facsimile manuscript feeder that can be used.

The present invention for achieving the above object is a feed roller installed to protrude slightly to the main frame, and the feed rubber is installed on the feed roller to feed the original sheet by piece to form a fixed hole spaced at the top, the paper feed The holder for fixing the rubber forms a hook hook on both sides of the feed rubber mounting groove in the center, and a tension part is integrally formed on both sides of the holder to act as a spring, and the hook hook of the holder is fitted. In the front frame, the front frame has a hook hole and a fixing protrusion which can be inserted into both fixing holes of the feed rubber at the bottom, and the holder is fixed to the front frame so that the tension portion of the feed rubber and the holder is pressed on the feed roller. It is characterized by being installed in close contact with.

1 is a configuration diagram of a conventional paper feeder.

2 is an exploded perspective view of a paper feeder according to the present invention.

3 is a configuration diagram in which the paper feeding device of the present invention is combined.

Explanation of symbols on the main parts of the drawings

1: feeding roller 2: feeding rubber

2a: fixing hole 3: holder

4: mounting groove 5: hook hook

6: tension part 7: support rib

8: Front frame 8a: Hook hole

8b: fixed protrusion 9: mainframe

10: Original

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 2 is an exploded perspective view of a paper feeding device according to the present invention, and FIG. 3 is a configuration diagram in which the paper feeding device of the present invention is combined. Referring to the configuration and operation of the present invention with reference to it.

The automatic document feeder of the facsimile machine includes a paper feed roller (1) installed to protrude slightly into the main frame (9), a paper feed roller (2) installed on the paper feed roller (1) to feed one sheet of original, and the paper feed rubber (2) and a front frame (8) for fixing the holder (3). The feeding rubber 2 forms a fixing hole 2a to be spaced apart from the upper portion, and the holder 3 capable of fixing the feeding rubber 2 protrudes upward on both sides of the mounting groove 4 in the center thereof. To form a locking hook (5) forming a locking step in the outward direction, and to the inner center of the mounting groove (4) to form a support rib (7) for fixing the feed rubber (2), the holder (3) Both sides of the front side is bent downward to be curved to form a tension portion (6) integrally to act as a spring. Fixing protrusions which can be fitted to the hook holes 8a and the lower fixing holes 2a of the feed rubber 2 at the lower end of the front frame 8 so that the locking hooks 5 of the holder 3 can be fitted and fixed. (8b) is formed.

Mounting the fixing hole (2a) formed in the center of the feeding rubber (2) to the support rib (7) formed in the mounting groove (4) of the holder (3) installed so that the feeding rubber (2) is located in the mounting groove (4) do. At this time, the feeding rubber 2 is mounted to protrude from the mounting groove (4) of the holder (3) so that the front end can be in close contact with the upper feed roller (1). In such a state, when both hook hooks 5 of the holder 3 are fixed to the hook holes 8a formed in the front frame 8, the holder 3 on which the feed rubber 2 is mounted is fixed to the front frame 8. It is fixedly installed. The tension frame 6 of the feeding rubber 2 and the holder 3 is installed in close contact with the front roller 8 by being fixedly installed on the front frame 8.

Effects of the present invention configured as described above are as follows. When the original is set on the mainframe 9 mounted on the facsimile, the original 10 arrives at the separation position and is detected by a detection device (not shown), whereby the feed roller 1 is driven to the bottom. Only the positioned document 10 is sent out, where the leading end of the original has a frictional force that increases as long as the contact length of the document that is in contact with the paper feed roller 1 after passing through the initial contact position to both tension portions 6 of the holder. Will be sent out. In addition, the upper surface of the original paper, which has passed through the tension portion 6 of the holder 3, does not contact the paper feed roller 1, is brought into contact with the paper feeder 2, so that the paper feed roller 1 has a frictional force with respect to the paper feeder 2. In addition to being largely set, only one sheet is always fed without having multiple sheets or single sheets, and the tension section 6 is curved to prevent overlapping, thereby holding the edge of the next document slightly under pressure. .

In the above state, the surface of the paper feed roller 1 is fed with the friction force, and the document 10 is conveyed, and the paper 10 is supported by the tip end pressed by the tension part 6 of the holder 3. 2) and the length of the document 10 which is conveyed by the frictional force of the paper feed roller 1 and is in contact with the paper feed roller 1 is increased so that the frictional force is further increased, only the original 10 at the bottom is sent out.

As described above, when the bottom original is sent out, the remaining originals 10 are controlled by the tensioner 6 on both sides of the holder 3, and when the first original is sent in this state, the feed roller 1 idles. The original document controlled by the tension section 6 of the holder 3 is fed for the next delivery. As described above, the feeding rubber is fixed and the holder is molded so that the free end of the feeding rubber contacts the feeding roller within a predetermined angle range so that the originals to be sent can be separated by one sheet.

According to the present invention as described above, the feed spring is molded into a holder without using a pressing plate and a separate plate spring, thereby simplifying the assembly structure, thereby reducing the cost and obtaining the exact force required for feeding the document, thereby sequentially sending the originals. There is an advantage that can prevent duplicate transfer and improve the reliability of equipment.

Claims (4)

In the automatic document feeder of a facsimile machine, a paper feed roller installed to protrude slightly from the main frame, and a paper feeder installed at the top of the paper feed roller to feed the originals one by one form a fixed hole spaced at an upper portion of the paper feed roller. The holder which can be fixed is formed with hook hooks on both sides of the feed rubber mounting groove in the center, and the tension part is integrally formed on both sides of the holder to act as a spring, and the hook hook of the holder is fitted and fixed. In the front frame, a hook hole and a fixing protrusion which can be fitted to both fixing holes of the feed rubber are formed at the bottom, and the holder is fixed to the front frame to pressurize the tension portion of the feed rubber and the holder on the feed roller. Fax automatic document feeder, characterized in that the close installation. 2. The automatic document feeder of a fax machine according to claim 1, wherein a support rib is formed in the mounting groove of the holder to insert a fixing hole formed in the center of the feeding rubber so that the leading end of the feeding rubber protrudes from the mounting groove. . 2. The automatic document feeder of a facsimile machine according to claim 1, wherein the hooking hook of the holder is formed to protrude outwardly and the hooking hook is inserted into the hook hole of the front frame. 2. The automatic document feeder of a fax machine according to claim 1, wherein both tension portions of the holder are curved.