JP2520476Y2 - Medium transport mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Overview] A medium transport mechanism for transporting a medium in a medium transport mechanism, particularly a medium issuing unit such as a passbook, a certificate, and a slip, and a common transport path for several types of medium having different thicknesses. With the aim of providing a medium transport mechanism that eliminates defective transport and shortens the adjustment time, a thickness of 0.1 mm is provided between the drive roller arranged in the transport path and the pinch roller that biases it. In a medium transport mechanism that sandwiches and transports thin media of approximately 2 mm and thick media of approximately 2.5 mm, the pinch roller is rotatably attached to the pinch roller shaft provided at one end of the pinch roller bracket, and the pinch roller The central part of the bracket is rotatably supported by a fixed shaft fixed to the side frame, and the other end is directed toward the bottom frame by a coil spring. The thin medium is conveyed in a state in which the thin medium is conveyed in a state of being urged in the pulling direction so that the pinch roller contacts the drive roller and is urged, and one end of the first lever is fixed to the pinch roller bracket by the fixed shaft and the other end of the first lever is moved to the first end. It is rotatably attached to the second lever by a connecting shaft of the lever and the second lever, a spring pin is penetrated through the fixed shaft, and a stopper portion is formed below the fixed shaft of the pinch roller bracket. The lateral pulling force applied to the second lever, which is connected to the end on the magnet and the other end to the first lever, turns the fixed shaft counterclockwise through the connecting shaft and the first lever, which causes the spring pin to rotate counterclockwise. The pinch roller bracket is rotated around the fixed shaft counterclockwise by contacting the stopper and the pinch roller is separated from the drive roller. A predetermined gap is formed between the rollers, and the thick medium is conveyed in this state, and the medium conveying mechanism is included.

[Industrial applications]

The present invention relates to a medium transport mechanism, and more particularly to a medium transport mechanism for transporting a medium in a medium issuing unit such as a passbook, a certificate, and a slip.

[Conventional technology]

Conventionally, in a medium issuing unit or the like, a medium feeding device has been used to store a large number of card-shaped mediums such as passbooks, certificates, and slips in a storage box, and sequentially feed the mediums one by one. There is.

FIG. 6 is a schematic configuration diagram of a conventional medium feeding device, and FIG. 7 is a detailed diagram of the pinch roller portion of FIG.

In these figures, in the main body 11 of the medium feeding device,
A plurality of medium storage boxes 12 (four in FIG. 6) for storing various media are provided, and an upper pathway unit section 13 and a lower pathway unit section 14 are provided below the medium storage boxes 12. A common transport path 15 for transporting the medium is formed, and a plurality of sets of drive rollers 16 and pinch rollers 17 are arranged as a medium transport mechanism in the middle of the transport path 15. As shown in FIG. 7, the pinch roller 17 urges the pinch roller 17 toward the drive roller 16 by a two-stage spring 18 in order to convey media having different thicknesses through a common conveyance path 15. It should be noted that one type of medium having a constant thickness is stored in one medium storage box 12 and several types of medium having different thicknesses are not randomly stored.

The medium accommodated in the medium accommodating box 12 is delivered to a common delivery path 15 by a predetermined delivery signal, and is delivered by a drive roller 16 and a pinch roller 17. At this time, for example, when transporting a thin medium such as a slip that has a thickness of about 0.1 mm, the first spring of the two-stage spring 18 works and the pinch roller
17 is urged toward the drive roller 16 side, but when a thick medium 19 such as a passbook having a thickness of about 2.5 mm is conveyed, a pinch roller is used.
17 moves by an amount according to the thickness of the thick medium 19 and the two-step spring 18
The first and second step springs actuate the pinch roller 17 toward the drive roller 16 side.

[Problems to be solved by the device]

In the conventional media transport mechanism, in order to transport media of different thicknesses through the common transport path 15, the pinch roller 17 has a two-stage spring.
Although urged toward the drive roller 16 by the 18, the thick medium 19 such as a passbook is conveyed by the drive roller when the thick medium 19 is conveyed.
When plunging between the pinch roller 17 and the pinch roller 17, the resistance force at the plunging with respect to the transporting force was large, which sometimes resulted in defective transport. Further, when the two-stage spring 18 is used, there is a problem that it is complicated and time-consuming to adjust the gap according to the thickness of the medium.

Therefore, it is an object of the present invention to provide a medium transporting mechanism that eliminates defective transport in a common transporting path of several types of media having different thicknesses and can shorten the adjustment time.

[Means for solving the problem]

The above-mentioned problem is that a thin medium having a thickness of about 0.1 mm or a thick medium having a thickness of about 2.5 mm is sandwiched between a driving roller arranged in a conveying path and a pinch roller urged against the driving roller and conveyed. In the medium transport mechanism, the pinch roller is rotatably attached to the pinch roller shaft provided at one end of the pinch roller bracket, and the center of the pinch roller bracket is rotatably supported by the fixed shaft fixed to the side frame. The other end is urged clockwise by the coil spring toward the bottom frame, whereby the thin medium is conveyed while the pinch roller is in contact with the drive roller and urged, and one end of the first lever is The pinch roller bracket is rotatably attached to the pinch roller bracket by the fixed shaft, and the second end is rotatably attached to the second lever by the connecting shaft between the first lever and the second lever. A spring is passed through the fixed shaft, and a stopper is formed below the fixed shaft of the pinch roller bracket. One end is a magnet and the other end is a lateral pull applied to a second lever connected to the first lever. The force rotates the fixed shaft counterclockwise through the connecting shaft and the first lever, whereby the spring pin moves counterclockwise and abuts against the stopper portion, and the pinch roller bracket is rotated counterclockwise around the fixed shaft and pinched. This is achieved by a medium transporting mechanism characterized in that the roller is separated from the drive roller to form a predetermined gap between the drive roller and the pinch roller, and the thick medium is transported in this state.

[Action]

In the present invention, since the adjusting mechanism for adjusting the gap between the driving roller and the pinch roller arranged in the conveying path is provided, when a thick medium is conveyed, a large gap is provided between the rollers. At the time of plunging, the resistance to plunge with respect to the conveying force becomes small, and the defective conveyance does not occur. Also,
The gap adjustment time can be shortened compared to the case where a two-stage spring is used.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 is a side view of a medium carrying mechanism according to an embodiment of the present invention, and FIG.
FIG. 4 is a plan view of the pinch roller portion of FIG. 1, FIG. 3 is a side view showing a state in which a thin medium according to an embodiment of the present invention is conveyed, and FIG.
FIG. 5 is a side view showing a state in which the thick medium according to the embodiment of the present invention is conveyed, and FIGS. 5A and 5B are operation explanatory views of the embodiment of the present invention. The parts corresponding to the conventional example are designated by the same reference numerals.

In these figures, 15 is a conveyance path, 16 is a drive roller,
17 is a pinch roller, 19 is a thick medium, and 20 is a thin medium. The pinch roller 17 is the pinch roller bracket 21.
Is rotatably attached to a pinch roller shaft 22 provided on the end side of the. This pinch roller bracket 21
A fixed shaft whose center is fixed to the side frame 23
The other end side is rotatably supported by 24, and the other end side is urged toward the bottom frame 25 side by an extension coil spring 26 whose one end side is fixed to the bottom frame 25 as shown by an arrow. That is, the coil spring 26 urges the pinch roller 17 toward the drive roller 16. A spring pin 27 is pierced through the fixed shaft 24 portion to which the pinch roller bracket 21 is attached, and the tip end of this spring pin 27 comes into contact with a stopper portion 21a formed on the pinch roller bracket 21. ing. The first lever is provided near the side frame 23 of the fixed shaft 24.
One end of 28 is fixed. The other end side of the first lever 28 is connected to one end side of the second lever 30 via a connecting shaft 29. The second lever 30 is connected to the tip of the operating shaft of the magnet 31. That is, the operation of the magnet 31 causes the second lever 30, the first lever 28 and the second lever 30 to move.
The pinch roller 17 is moved via the connecting shaft 29 with the lever 30, the first lever 28, the fixed shaft 24, and the spring pin 27 so that the gap with the drive roller 16 can be adjusted. The gap is set to be slightly smaller than the thickness of a medium such as a passbook.

 Next, the operation of the medium transport mechanism having the above configuration will be described.

Referring to FIGS. 3 and 4, when the thick medium 19 is conveyed, the magnet 31 is activated from the state of FIG. 3 so that the second lever 30 moves in the direction of arrow A in FIG. Be attracted to. This pulling force is transmitted to the fixed shaft 24 via the second lever 30, the connecting shaft 29, and the first lever 28. The tip of the spring pin 27 attached to the fixed shaft 24 abuts on the stopper portion 21a of the pinch roller bracket 21 which is urged clockwise by the coil spring 26, and the pinch roller 17 is shown in FIG. So that it is rotated counterclockwise (arrow B direction). As a result, a predetermined gap is formed between the drive roller 16 and the pinch roller 17. When the thick medium 19 is conveyed as shown in FIG. 5 (b) in the state where the predetermined gap a is formed, the resistance force of the thick medium 19 at the time of rushing becomes small and the thick medium 19 is conveyed. No defects will occur. Further, since the load generated by the coil spring 26 is applied to the pinch roller 17 by the rotational displacement of the spring 27, the force for transporting the thick medium 19 does not decrease as compared with the conventional case. In addition, the magnet 31
The gap adjustment is easy and takes less time.

On the other hand, when the thin medium 20 is conveyed as shown in FIG. 5A, the magnet 31 is conveyed without being activated (the state shown in FIG. 3).

As described above, when the thick medium 19 is conveyed, the resistance force at the time of rushing becomes small so that the conveyance failure does not occur, and the adjustment according to the type of medium is easy and takes no time.

In the above embodiment, the magnet 31 is used, and the first lever 28, the second lever 30, the fixed shaft 24, the connecting shaft 29 are used.
The gap between the drive roller 16 and the pinch roller 17 is adjusted by a link mechanism such as the above, but the scope of application of the present invention is not limited to this, and an adjustment mechanism that moves the pinch roller 17 by other means is also applicable. Good.

[Effect of device]

As described above, according to the present invention, since the adjusting mechanism for adjusting the gap between the driving roller and the pinch roller arranged in the conveying path is provided, the gap is provided when the thick medium is conveyed. When plunging between the rollers, the plunging resistance against the transporting force can be reduced, and defective transport is eliminated. In addition, the gap adjustment time can be shortened.

[Brief description of drawings]

FIG. 1 is a side view of a medium conveying mechanism according to an embodiment of the present invention, FIG. 2 is a plan view of a pinch roller portion of FIG. 1, and FIG. 3 is a side view showing a state in which a thin medium according to an embodiment of the present invention is conveyed. FIG. 4 is a side view showing a state in which the thick medium of the embodiment of the present invention is conveyed, FIGS. 5 (a) and 5 (b) are operation explanatory views of the embodiment of the present invention, and FIG. 6 is a conventional medium feeding device. FIG. 7 is a detailed view of the pinch roller portion of FIG. In the figure, 15 is a conveying path, 16 is a drive roller, 17 is a pinch roller, 19 is a thick medium, 20 is a thin medium, 21 is a pinch roller bracket, 21a is a stopper portion, 22 is a pinch roller shaft, and 23.
Is a side frame, 24 is a fixed shaft, 25 is a bottom frame,
26 is a coil spring, 27 is a spring pin, 28 is a first
Lever, 29 is a connecting shaft, 30 is a second lever, and 31 is a magnet.

Claims (1)

(57) [Scope of utility model registration request] 1. A thin medium (20) having a thickness of about 0.1 mm and a thickness between a driving roller (16) arranged in a conveying path (15) and a pinch roller (17) biased against the driving roller (16). In the medium transport mechanism that sandwiches and transports a thick type medium (19) of about 2.5 mm, the pinch roller (17) is rotatable on the pinch roller shaft (22) provided at one end of the pinch roller bracket (21). The center part of the pinch roller bracket (21) that is attached is rotatably supported by a fixed shaft (24) fixed to the side frame (23), and the other end is a bottom spring (25) by a coil spring (26). The thin medium (20) is conveyed with the pinch roller (17) in contact with the drive roller (16) and is urged in the clockwise direction toward the first lever (28). Is a pinch roller bracket ( 21), and the other end is connected to the second lever by the connecting shaft (29) of the first lever (28) and the second lever (30).
Each of them is rotatably attached to a lever (30), a spring pin (27) is passed through the fixed shaft (24), and a stopper portion (21a) is provided below the fixed shaft (24) of the pinch roller bracket (21). ) Is formed, one end is the magnet (31) and the other end is the first lever (28)
The lateral pulling force applied to the second lever (30) connected to the rotating shaft rotates the fixed shaft (24) counterclockwise through the connecting shaft (29) and the first lever (28), thereby causing the spring pin ( 27) moves counterclockwise, contacts the stopper (21a), rotates the pinch roller bracket (21) counterclockwise around the fixed shaft (24), and separates the pinch roller (17) from the drive roller (16). Drive roller (16) and pinch roller (1
A medium transport mechanism characterized in that a predetermined gap (a) is formed between 7) and the thick medium (19) is transported in this state.