JPS5844113Y2 - Paper jam release mechanism in copying transmission equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper jam release mechanism in a facsimile transmission device.

Generally, in copying electronic transmission devices, paper is fed while being held between a drive roller and a pinch roller rotatably attached to the drive roller. If a paper jam occurs and an attempt is made to pull it out by pinching one end of the paper, the paper will be damaged and removal will require extremely complicated work.

Therefore, conventionally, as a mechanism for releasing paper from the pinched state, a structure has been adopted in which a drive roller, which is a drive source, is moved to separate it from the pinch roller.

However, if a structure like the above is adopted, a motor as a drive source or a gear such as a motor gear to transmit rotation from this motor is interposed or attached to the drive roller side, so it is difficult to move the drive roller. At the same time, these drive systems also move together, which inevitably makes the movement mechanism complicated and large.Furthermore, moving the drive roller, which serves as the reference for reading, is difficult when returning to the original position. This is not preferable from a design point of view because there is a risk of positional displacement.

The present invention eliminates the above-mentioned conventional defects, and provides a paper jam release mechanism in a reproduction transmission device that can release paper jams with an extremely simple structure.

Hereinafter, details of the present invention will be explained along with embodiments shown in the drawings.

1 and 2 illustrate an embodiment of the present invention. In the figures, reference numerals 1 and 2 indicate device side plates arranged in parallel, and a driving roller 3 is disposed between both side plates 1 and 2. is axis 4
It is rotatably supported via the shaft.

Above the drive roller 3, a shaft 5 is rotatably mounted between the side plates 1 and 2.
One end of a paper pressing spring 6 is fixed to this shaft 5, and its tip is attached to the circumferential square surface of the drive roller 3.

On the other hand, the inside corner of a release lever 7 formed in a substantially L-shape is fixed to one end of the shaft 5.

A bent holding part 8 is formed at the lower end of the release lever 7, and the holding part 8 is slidably supported in an inclined elongated hole 9 formed in the side plates 1 and 2. One end of the pinch roller shaft 10 is held.

A pinch roller 11 is rotatably supported on the pinch roller shaft 10.

Further, the other end of the pinch roller shaft 10 is held by a holding portion 12 fixed to one end of the shaft 5.

By the way, a pin 13 is installed on the side surfaces of the side plates 1 and 2, and a spring 14 is stretched between the pin 13 and the end of the pinch roller shaft 10. 11 is pressed against the drive shaft 3 with a constant pressure.

Further, the pinch roller shaft 10 is held at one end by the holding portion 8 of the release lever 7, and since the paper press spring 6 is fixed to the shaft 5 to which the release lever 7 is fixed, this press spring 6 is also fixed. Further, the spring 14 presses the circumferential surface of the drive roller 3 with almost the same pressure as the pinch roller 11.

On the other hand, the holding portion 8 of the release lever 7 is always in contact with the free end of the contact piece 16 of the microswitch 15 fixed to the side plate 2 side.

Since the present embodiment is constructed as described above, when a paper jam occurs, by pushing the free end of the release lever 7 downward, the pinch roller shaft 10 is rotated clockwise in FIG. 2 about the shaft 5. is moved away from the drive roller 3 against the tension of the spring 14, the pinch roller 11 moves away from the drive roller 3, and at the same time pushes the contact piece 16 of the microswitch 15, which closes the device. The drive of is stopped.

At the same time, the paper pressing spring 6 also separates from the drive roller 3.

Therefore, the paper that has been pinched between the drive roller 3, the paper pressing spring, and the pinch roller 11 is released from the pinching force, and the jammed paper can be freely taken out.

When the release lever 7 is released, the release lever 7 is pulled toward the drive roller 3 by the tension of the spring 14, and the pinch roller 11 is pressed against the drive roller 3, returning to its original state.

As is clear from the above description, according to the present invention, the pinch roller and paper press spring can be separated from the drive roller by operating the release lever, and at the same time, the drive system is stopped via the microswitch. Paper can be removed very easily and safely.

In addition, the pressing force of the pinch roller and the paper pressing spring against the driving roller is generated by the same spring, so there is no need for a mechanism to adjust the pressing force, and there is no need to take the trouble of separating them from the driving roller independently in the event of a paper jam. In addition to the above-mentioned advantages such as not having to be used, the practical effects such as compactness, simplification, and improved operability of the device are extremely significant.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the present invention, with FIG. 1 being a plan view and FIG. 2 being a side view. 1.2... Side plate, 3... Drive roller,
5... shaft, 6... paper press, 7.
...Release lever, 8゜12 ... Holding sound included 9 ... Long hole, 10 ... Pinch roller shaft, 11 ... Pinch roller , 13...
Pin, 14...Spring, 15...
Micro switch, 16... Contact piece.

Claims (1)

[Scope of utility model registration request] A drive roller 3, a shaft 5 parallel to the drive roller shaft 4 rotatably suspended above the drive roller, a release lever 7 fixed to the shaft and having a pinch roller holder 12 at one end, and a spring. a pinch roller 10 which is given a pressing habit by a drive roller 14 and feeds out the paper by sandwiching it between the drive roller and the drive roller; and a pinch roller 10 whose one end is fixed to the shaft and whose free end is attached to the circumferential surface of the drive roller. It consists of a paper pressing spring 6 that cooperates with the drive roller to clamp the paper between the paper and the drive roller, and a switch 15 disposed near the holding portion of the release lever. What is claimed is: 1. A paper jam release mechanism for a reproduction electrotransmission device, characterized in that the pinch roller and the paper pressing spring are separated at the same time, and the switch is closed to stop the drive roller.