JPH0339253Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical background of the invention] This invention is a paper feeder in which paper printed by a printing device is passed between a paper ejection rotating body such as a paper ejection roller and a paper ejection guide and is stored in a paper ejection stacker. Regarding equipment.

[Technical background of the invention]

Generally, printing devices such as printers and typewriters are supplied with paper for printing from a paper feeder. This paper feed device is attached to the paper feed/output port of the printing device.
The paper stacked in the paper feed stacker is fed to the platen of the printing device using the paper feed roller or one sheet of paper is fed manually, and the paper that has been printed on the platen is passed between the paper ejection roller and the paper ejection guide. It is designed to be stored in the paper ejection stacker.

[Problems with background technology]

In such a printing device, the paper ejection guide is designed to rotate around an axis in order to facilitate removal of paper when it becomes jammed between the paper ejection roller and the paper ejection guide.

However, since this paper ejection guide is rotatable, it may rattle during transportation or open when the paper feeding device is attached/detached, leading to damage, and making attachment/detachment difficult.

[Purpose of invention]

The object of this invention is to provide a paper feeding device that does not cause the paper ejection guide to wobble during transportation or attachment/detachment, is free from damage, and is easy to attach/detach.

[Summary of the idea]

This device is removably attached to a printing device by the rotation of a lock lever, and the paper printed by the printing device is transferred to a paper ejecting rotary body and a rotatable ejector provided opposite to the paper ejecting rotary body. In a paper feeding device that passes between a paper guide and is stored in a paper ejection stacker,
An engaging portion that engages with a chucking portion of the printing device is provided at one end of the lock lever, and the locking lever locks the paper ejection guide when the engaging portion moves in a direction away from the chucking portion. It is equipped with a locking part.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

In this embodiment, as shown in FIG.
The paper feed device 3 attached to the paper feed/discharge port 2 will be explained as an example.

First, the printing device 1 includes a platen 5 attached to a platen shaft 4, a head carriage 6 that can reciprocate laterally along the platen 5, a print head 7 attached to the carriage 6, and a print head 7 attached to the print head 7 around the platen 5. It includes a guide 8 and pinch rollers 9 and 10 provided along the surface.

On the other hand, the paper feed device 3 has side frames 11 on both sides.
(Only one side frame is shown in the diagram.)
an arcuate support portion 1 that fits with the platen shaft 4;
It has 2.

Further, on the outside of the side frame 11, as shown in FIG. 2, a lock lever 13 is pivotally supported at its intermediate portion by a shaft 14. This lock lever 13 is used to fix the paper feeder 3 to the platen shaft 4, and has a chucking portion, for example, an engaging portion 15 that engages with the platen shaft 4 at one end, and a locking portion, such as a locking pin 16 and a locking portion at the other end. It has a support pin 17.

The locking pin 16 has the engaging portion 15 connected to the platen shaft 4.
This is a locking portion that locks a paper ejection guide 42, which will be described later, from the outside when it is not engaged with the side frame 11, and is provided so as to protrude from the outside of the side frame 11 to the inside. In addition,
The side frame 11 is provided with a movable elongated hole 18 into which a locking pin 16 is inserted. Further, a support pin 19 is provided on the outside of the side frame 11 near the support pin 17 of the lock lever 13, and a click spring 2 is provided between the support pins 17 and 19.
0 is attached. Furthermore, lock lever 13
A support portion 21 is provided between the shaft 14 and the engaging portion 15 to support one end of a spring 46, which will be described later.

Note that the click spring 20 lightly locks the lock lever 13 in the supporting position;
A wave washer or a spring may be provided to apply a thrust load to the shaft 14, or a leaf spring, a protrusion, or a recess may be used for click operation.

A paper feed tray 22 is attached to the rear of the side frame 11. This paper feed table 22 includes a holding plate 25 attached to shafts 23 and 24. Note that there is a paper feed stacker frame 26 on the back of this holding plate 25.
is attached, and together with the paper feed stand 22 constitutes a paper feed stacker. The paper feed table 22 also includes a rotating plate 27 that rotates around a shaft 24, and a set lever 27 that rotates around a shaft 24.
By rotating 8, a crank 29 fixed to the shaft 23 rotates, and the movement of the crank 29 causes a lever 30 fixed to the back of the rotating plate 27 to move up and down, thereby rotating the rotating plate 27. It's becoming like that.
Note that a spring 31 is attached between the shaft 23 and the tip of the lever 30.

A slide plate 32 (only one side is shown in the figure) is attached to the rotating plate 27, one on each side. On the outside of this slide plate 32, a separation lever 34 equipped with a separation claw 33 for separating the sheets stacked on the rotary plate 27 one by one during feeding is mounted on a shaft 35.
It is rotatably mounted.

Further, on the paper feed table 22, a paper feed rotating body, for example, a paper feed roller 37, is attached to a drive shaft 36 supported by the side frame 11.

Furthermore, an L-shaped guide 3 is located in front of the paper feed table 22.
8, and a stopper 39 for regulating the leading edge of the paper is attached to the surface facing the paper feed tray 22.
Further, a guide 40 is attached in front of the guide 38, and the guides 38 and 40 guide the paper fed from the paper feed table 22 between the platen 5 and the guide 8.

A paper discharge guide 42 that rotates around a shaft 41 is mounted on the support portion 12 so as to guide the paper printed by the print head 7 to a paper discharge roller 44 mounted on a drive shaft 43. It's summery. Further, a support portion 45 is provided below the guy 42, and a spring 46 is attached between this support portion 45 and the support portion 21 of the lock lever 13.

An S-shaped guide 47 is provided below the paper discharge roller 44, and a static elimination brush 48 and a paper discharge stacker frame 49 are attached thereto. Note that the paper stacker frame 49 and the guide 47 constitute a paper stacker.

In the above configuration, when the paper feeding device 3 is attached to the paper feeding/discharging port 2 of the printing device 1, the locking pin 16 is moved along the elongated hole 18 toward the paper discharging guide 42 side. As a result, the lock lever 13 rotates about the shaft 14, the locking pin 16 comes into contact with the paper discharge guide 42, and the paper discharge guide 42 is fixed, and the click spring 20 clicks. Further, the engaging portion 15 rotates toward the guide 40, and the space between the supporting portion 12 and the engaging portion 15 opens.

In this state, the support portion 12 is fitted onto the platen shaft 4, and the paper feeding device 3 is set on the printing device 1. Then, the locking pin 16 is moved toward the guide 40, and the click spring 20 is returned to its original state as shown in FIG. This releases the restraint on the paper ejection guide 42 and also releases the lock lever 1.
The engaging portion 15 of No. 3 is engaged with the platen shaft 4 and fixed to the platen shaft 4.

Next, when paper is set on the paper feed table 22, the leading edge of the paper comes into contact with the leading edge regulating stopper 39. Then, when the set lever 28 is rotated, the rotating plate 27
rotates about the shaft 24 as a fulcrum. As a result, the separation claw 33 rises together with the paper on the rotary plate 27, and the paper is pressed against the paper feed roller 37.

In such a state, when a printing command is given to the printing device 1 from a word processor, computer, etc., the drive shaft 36 rotates, and the paper is pushed out by the rotation of the paper feed roller 37. At this time, both front ends of the paper are caught by the separating claws 33, and when the paper bends and bounces beyond its elastic limit, it is separated into one sheet and fed between the platen 5 and the guide 8 of the printing device 1.

When the paper is wrapped around the platen 5 and printed by the print head 7, the paper enters inside from below the guide 47 and is fed between the paper ejection roller 44 and the paper ejection guide 42. At that time, move the guide 42 to the paper ejection roller 4.
The paper is fed out under pressure by a spring 46 biasing the paper. Then, the fed paper is stored on the paper discharge stacker frame 49 with the printed side facing down.

When removing the paper feed device 3 from the printing device 1, move the locking pin 16 toward the paper ejection guide 42 side to fix the paper ejection guide 42, and open the engagement portion 15 of the lock lever 13 in the same way as when attaching the paper feed device 3. Disengage the platen shaft 4. This causes the paper feeder 3 to come off the platen shaft 4. Note that when the paper ejection guide 42 is removed and carried, it is carried with the paper discharge guide 42 fixed with the locking pin 16.

As described above, according to this embodiment, the engaging portion 1 that engages with the platen shaft 4 is provided at one end of the lock lever 13.
5 is provided, and this engaging portion 15 is connected to the platen shaft 4 at the other end.
A locking pin 16 is provided to lock the paper ejection guide 42 from the outside when it is not engaged with the side plate 11.
Since the paper feeding device 3 is fixed to the printing device 1, the paper ejection guide 42 can rotate around the shaft 41, so that it can guide the paper and remove paper jams if they occur. When removing the paper feeder 3 from the printing device 1, by moving the locking pin 16 toward the paper ejection guide 42, the engaging portion 15 is disengaged from the platen shaft 4, and the paper ejection guide 42 is connected to the paper ejection roller 44. It is clamped and fixed between the locking pin 16.

Therefore, the paper discharge guide 42 will not rattle or open during transportation or attachment/detachment. For this reason,
There is no fear that the paper ejection guide 42 will be damaged, and the operation of attaching and detaching the paper feeder 3 is very easy.

Furthermore, when removing the paper feed device 3 from the printing device 1, the paper ejection guide 42 can be automatically moved by removing the lock lever 13 from the platen shaft 4, which must be operated, without having to fix the paper ejection guide 42 separately. Since it is automatically locked, there is no hassle and you will never forget to lock it.

Although one embodiment of this invention has been described above, this invention is not limited to the above embodiment.

For example, a modification as shown in FIG. 3 is also possible. That is, in the above embodiment, the paper discharge roller 44 was shown as the paper discharge rotating body, but as shown in FIG.
A paper discharge belt 52 may be provided between the paper discharge belts 51 and 51. In addition, although the middle part of the lock lever 13 is pivotally supported, for example, one end of the lock lever 53 is provided with an engaging part 55 that engages with the platen shaft 54, and the other end is attached to the shaft 56.
It may be rotatably supported. Furthermore, although the locking pin 16 is shown as a locking portion, for example, the paper ejection guide 5
It may be a protrusion 58 that contacts 7.

Further, a modification as shown in FIG. 4 is also possible. That is, in the above embodiment, the inside of the paper ejection roller 44 (the first
Although the paper feeding device 3 is shown in which a paper ejection guide 42 is provided on the right side in the figure and accommodates printed paper with the printed surface facing downward, as shown in FIG. The present invention can also be applied to a paper feeding device in which a paper ejection guide 60 is provided on the left side in FIG. 4 and accommodates printed paper with the printed surface facing upward. Further, in the embodiment described above, a paper feeding device was shown in which the lock lever 13 is coupled to the platen shaft 4, but the lock lever 64, which rotates about a shaft 63, is engaged with a specially provided chucking portion, for example, a pin 62, instead of the platen shaft 61. The locking portion 66 is engaged with the locking portion 65 .
The paper ejection guide 60 may be locked at. Further, a roller 67 or the like may be attached to the paper discharge guide 60.

Furthermore, a modification as shown in FIG. 5 is also possible. That is, in the embodiments and modified examples described above, the paper ejection guide 68 was pressed against and locked against the paper ejection rotary body such as the paper ejection roller 69, but a platen, for example, is attached to one end of a lock lever 71 that rotates about a shaft 70. An engaging portion 73 that engages with the shaft 72 is provided, a locking portion 74 is provided on the other end side, and a holding portion 75 is provided on the outside of the paper ejection guide 68, and the lock lever 71 is rotated to release the platen from the platen shaft 72. When the joining part 73 is separated, the paper ejection guide 68 is pushed toward the holding part side instead of the paper ejection roller 69 side by the locking part 74, and even if it is locked between the holding part 75 and the locking part 74, good.

[Effect of idea]

As explained above, according to this invention, the paper is removably attached to the printing device by the rotation of the lock lever, and the paper printed by the printing device is placed opposite the paper ejection rotor and the paper ejection rotor. In a paper feeding device that is inserted between a rotatable paper ejection guide and stored in a paper ejection stacker, one end of the lock lever is provided with an engaging portion that engages with a chucking portion of the printing device, and the other end is provided with an engaging portion that engages with a chucking portion of the printing device. Since a locking portion is provided that locks the paper ejection guide when the engaging portion moves in the direction of separating from the chucking portion, the paper ejection guide does not rattle or open during transportation or attachment/detachment. Therefore, it is possible to obtain a paper feeding device that is free from damage and is easy to attach and detach.

[Brief explanation of drawings]

1 and 2 are diagrams showing the configuration of an embodiment of this invention, FIG. 1 is a sectional view showing the internal structure of the paper feeding device, FIG. 2 is a diagram showing the structure around the lock lever, and FIG. 3 -FIG. 5 are diagrams showing a modification of this invention. DESCRIPTION OF SYMBOLS 1... Printing device, 2... Paper feeding/discharging port, 3... Paper feeding device, 4... Platen shaft, 12... Support part, 13
... Lock lever, 14 ... Shaft, 15 ... Engagement part, 16 ... Locking pin, 20 ... Click spring, 22 ... Paper feed stand, 37 ... Paper feed roller, 4
2... Paper ejection guide, 44... Paper ejection roller, 46...
... Spring, 52 ... Paper ejection belt, 53 ... Lock lever, 54 ... Platen shaft, 55 ... Engagement part, 57 ... Paper ejection guide, 58 ... Protrusion, 59 ...
... Paper ejection roller, 60 ... Paper ejection guide, 62 ... Pin, 64 ... Lock lever, 65 ... Engagement part, 6
6... Locking portion, 67... Roller, 68... Paper ejection guide, 69... Paper ejection roller, 71... Lock lever, 73... Engagement portion, 74... Locking portion, 75...
Holding part.

Claims (1)

[Scope of utility model registration request] It is removably attached to a printing device by rotation of a lock lever, and the paper printed by the printing device is transferred between a paper ejection rotor and a rotatable paper ejection guide provided opposite to the paper ejection rotor. In the paper feeding device which is accommodated in a paper discharge stacker through a paper feeder, the lock lever includes an engaging portion that engages with a chucking portion of the printing device on one end side, and the engaging portion separates from the chucking portion on the other end side. A paper feeding device comprising a locking portion that locks the paper discharge guide when the paper feed guide moves in the direction.