JP2001240257A - Medium delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medium delivery device with improved feeding operability of medium. SOLUTION: This medium delivery device comprises a fixed wall 2 having a delivery roller 1 exposed thereto and a medium storage chamber 4 having, as an opposed wall surface, a movable wall 3 energized to the fixed wall 2 side. A medium 11 stored between the fixed wall 2 and the movable wall 3 is delivered from the medium storage chamber 4 while the medium 11 is pressed against the delivery roller 1. A link device 5 for moving the movable wall 3 into an attitude parallel with the fixed wall 2 by pulling the opposite end part of the movable wall 3 to the opened side stroke end of the medium storage chamber 4 when the operation side end part of the movable wall 3 reaches near the opened side stroke end of the medium storage chamber 4 is installed on a side wall 4b adjacent to the fixed wall 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium feeding device.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional example of a medium feeding device used for a unit for issuing a medium such as a passbook or a cut sheet. In this conventional example, the medium feeding device includes a medium storage chamber 4 surrounded by a bottom wall 4a, a side wall 4b, a fixed wall 2, and a movable wall 3. The medium is stored in the medium storage chamber 4 in an upright state.
Is pressed against the fixed wall 2 facing the movable wall 3. A part of the feed roller 1 is exposed on the fixed wall 2, and when the feed roller 1 is rotated,
The medium is sequentially fed downward from the medium accommodating chamber 4 as indicated by arrows in FIG.

When the medium in the medium accommodating chamber 4 runs out, the upper end of the movable wall 3 is moved to expand the inside of the medium accommodating chamber 4 and supply the medium.

[0004]

However, in the above-mentioned prior art, in order to supply a large amount of medium into the medium accommodating chamber 4, since the moving distance of the movable wall 3 becomes large, the bending of the compression spring 10 also decreases. growing. For this reason, the reaction force applied to the movable wall 3 also becomes large, and as shown in FIG. 7B, there is a problem that the movable wall 3 is inclined and the supply operation of the medium becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and has as its object to provide a medium feeding device having a good medium supply operability.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a fixed wall 2 from which a feeding roller 1 is exposed;
Medium chamber 4 having movable wall 3 urged to the side facing wall surface
And the medium 1 accommodated between the fixed wall 2 and the movable wall 3
1 is a medium feeding device that feeds the movable wall 3 out of the medium storage chamber 4 while pressing the transfer roller 1 against the feed roller 1. Movable wall 3 when approaching
By moving the movable wall 3 to a position parallel to the fixed wall 2 by pulling the opposite end of the medium storage chamber 4 toward the stroke end on the open side.

The medium accommodating chamber 4 has a pair of opposed side walls 4b.
The movable wall 3 is urged by, for example, a compression spring 10 toward the fixed wall 2 where a part of the feed roller 1 is exposed. Medium 11
Is stored in the medium storage chamber 4 in a standing posture, and the movable wall 3
And is pressed against the feeding roller 1 with a predetermined pressure.
The medium 11 is reinforced by moving the operation side end of the movable wall 3 away from the fixed wall 2, that is, by moving the movable chamber 3 toward the open side of the medium storage chamber 4 to expand the medium storage chamber 4. When the link device 5 is moved to the vicinity of the end, the link device 5 is operated, and the lower end of the movable wall 3 is moved to maintain the movable wall 3 in the vertical upright posture.

Therefore, according to the present invention, even if the movable wall 3 is inclined during the movement, the movable wall 3 stands up at the stroke end position, so that a replenishing space for the medium 11 is reliably secured, and workability is improved.

The link device 5 includes a first rotary link 7 having a detection portion 6 at one end thereof located near the end of the stroke of the open side of the medium chamber 4 at the operation side end of the movable wall 3, and a first rotary link 7. And a second rotary link 9 slidably and rotatably connected to the other end and having a movable wall calling portion 8 at the other end.

[0010]

FIG. 2 shows a medium feeding device used in a passbook printer. In this embodiment, the medium feeding device includes a medium storage chamber 4, a feeding section 12 for feeding the medium 11 in the medium storage chamber 4, and a transport section 13 for transporting the fed medium 11 to a printing section (not shown). Have.

The feeding section 12 has a feeding roller 1 partially exposed on the fixed wall 2 of the medium accommodating chamber 4. In this embodiment, in which two medium storage chambers 4 are provided at line symmetrical positions with respect to the center, one feeding roller 1 is disposed on the fixed wall 2 of each medium storage chamber 4 and is provided by a control unit (not shown). Either one is driven by the switching unit 14 operated by the control signal.

As shown in FIG. 3, the switching section 14 has a pair of plungers 15 and an idle gear 17 that is driven by the plungers 15 to rotate around the rotation axis of a driving gear 16. By selecting an idle gear 17 that meshes with the transmission gear 18
Can be rotated in opposite directions. The power transmitted to the transmission gear 18 is arranged coaxially with the transmission gear 18 and is transmitted to the delivery roller 1 via a timing belt 19 wound around a pulley 21 corresponding to each delivery roller 1.
The rotation direction of each pulley 21 is regulated by the brake roller 20, and only the pulley 21 that is allowed to rotate in the rotation direction selected by the plunger 15 rotates, and the delivery roller 1 on the side connected to the pulley 21 rotates. Are driven to rotate in a predetermined direction.

As shown in FIG. 4, the transport section 13 has a transport roller 22 and a medium guide 23 arranged adjacent to the drive gear 16, and the medium 1 fed from the feed section 12.
1 and transports it to a medium processing unit such as a printing unit. A pair of transport rollers 22 is provided corresponding to each medium storage chamber 4, and delivers the medium 11 to the same medium guide 23.

As shown in FIG. 5, each medium accommodating chamber 4 is formed by erecting a fixed wall 2, a movable wall 3, and a side wall 4b on a bottom wall 4a supporting a medium 11. The movable wall 3 is disposed so as to face the fixed wall 2, and is urged toward the fixed wall 2 by a compression spring 10 interposed between the movable wall 3 and the case side plate 24. In order to shorten the spring length at the time of contraction and make the whole apparatus compact, the spring diameter of the compression spring 10 is formed so that the diameter gradually decreases toward the tip.

When the knob 3a formed at the upper end (operation side end) of the movable wall 3 is operated, the movable wall 3 can move while standing up and maintaining a parallel posture without tilting. In addition, the movable wall 3 and the case side plate 24 disposed on the back of the movable wall 3 are connected via a cross link 25 at the operation side end and the lower end (opposite end) of the movable wall 3. The cross link 25 is formed by rotatably supporting two link plates 25a at a center portion thereof.
Is connected to the movable wall 3 and the other end is connected to the case side plate 24. When the knob 3a of the movable wall 3 is moved toward the case side plate 24 as shown by an arrow in FIG. 5A, each link plate 25a rotates while one end moves along the sliding long hole 25b. . Since each connecting portion of the movable wall 3 with the link plate 25a moves toward the case side plate 24 by substantially the same amount with the rotation of the link plate 25a, the movable wall 3 maintains the parallel posture with the fixed wall 2 while maintaining the parallel posture. It moves to the side plate 24 side.

A link device 5 is provided on a side wall 4b of the medium storage chamber 4. The link device 5 includes a first rotation link 7 and a second rotation link 9 as shown in FIG.
The movable wall 3 is disposed near the open end (in the direction away from the fixed wall 2 to increase the volume of the medium storage chamber 4) near the end of the stroke. The link device 5 is provided on the left or right or one of the side walls 4b, and is disposed on the outer surface of each side wall 4b in order to prevent interference with the movable wall 3 that moves.

The first rotary link 7 has an operating rod (detector 6) which protrudes toward the medium storage chamber 4 at one end, and is rotatably supported at the center by the side wall 4b. On the other hand, the second
The rotary link 9 has a hook-shaped movable wall inlet 8 at one end, and is rotatably supported below the first rotary link 7. As shown in FIGS. 6 (a) and 6 (b), the movable wall inviting portion 8 has a side wall 4b at the end of the retreat-side rotation stroke.
And protrudes from below the side wall 4b at the end of the operation side rotation stroke of the second rotation link 9 shown in FIG. 6 (c). Further, the second rotation link 9 is urged by the tension spring 26 toward the retreat-side rotation stroke end side.
The first and second rotating links 7 and 9 are connected to the first rotating link 7.
The second pin 9a is rotatably and slidably connected to the second rotary link 9 by fitting the pin 7a into the sliding long hole 9a.

Therefore, in this embodiment, the medium 11 accommodated in the medium accommodating chamber 4 is pressed by the feeding roller 1 with an appropriate pressure by the pressing force of the movable wall 3, and when the feeding roller 1 is driven, Are sequentially fed out of the medium storage chamber 4 and transported to the medium processing section. The supply of the medium 11 to the medium storage chamber 4 is performed by operating the knob 3 a to move the movable wall 3 in a direction away from the fixed wall 2. When the knob 3a at the upper end of the movable wall 3 is moved, the entire movable wall 3 moves substantially in parallel by the operation of the cross link device 25, and the volume of the medium storage chamber 4 is expanded. When the movable wall 3 is moved to the end of the open stroke when replenishing a large amount of the medium 11, the upper end of the movable wall 3 interferes with the operating rod 6 of the first rotating link 7, and then, as shown in FIG.
As shown in (b), the first rotating link 7 is rotated around the support shaft 7b. The rotation of the first rotating link 7 causes the second
The rotating link 9 rotates around the support shaft 9b from the retracted side to the vicinity of the end of the working-side rotation stroke, and the movable wall bringing-in portion 8 protrudes from below the side wall 4b, and from the lower end of the movable wall 3 to the side wall 4b.
The pressed part 3b protruding to the side is pressed. The pressing direction of the pressed part 3 b by the movable wall inducing part 8 is
The lower end of the movable wall 3 is forcibly moved until it becomes a vertical posture. As a result, the movable wall 3
Moves to the end of the open stroke, and the compression spring 1
Even if the reaction force of zero becomes large and the clearance at the connecting portion of the link plate 25a of the cross link device 25 is accumulated and the movable wall 3 is in the inclined position, the lower end of the movable wall 3 is in the vertical standing position by the link device 5. To be corrected, a large amount of the medium 11 can be easily supplied into the medium storage chamber 4.

[0019]

As is clear from the above description, according to the present invention, the supply of the medium is easy, so that the usability can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing the present invention.

FIG. 2 is an overall view of a medium feeding device.

FIG. 3 is a diagram illustrating a switching unit.

FIG. 4 is a diagram illustrating a transport unit.

5A and 5B are diagrams showing a medium storage chamber, wherein FIG. 5A is a view in the direction of arrow 5A in FIG. 2, and FIG. 5B is a view in the direction of arrow 5B in FIG.

6A and 6B are diagrams showing a link device, wherein FIG. 6A is a diagram showing a state where a movable wall is moved, FIG. 6B is a diagram showing a state where the movable wall is in contact with a detection unit, and FIG. It is a figure showing the state where a movable wall was raised by an invocation part.

FIG. 7 is a diagram showing a conventional example.

[Description of Signs] 1 Feeding-out roller 2 Fixed wall 3 Movable wall 4 Medium storage chamber 5 Link device 6 Detecting unit 8 Movable wall calling unit 9 Second rotating link 11 Medium

Claims (2)

[Claims] A fixed wall to which a feeding roller is exposed; and a medium storage chamber having a movable wall urged toward the fixed wall as an opposing wall surface, and feeds a medium housed between the fixed wall and the movable wall. A medium feeding device for feeding out of a medium storage chamber while pressing against a roller, wherein a side wall adjacent to the fixed wall has an operation-side end of the movable wall near the end of a medium storage chamber opening-side stroke. A medium feeding device provided with a link device for pulling the opposite end to the end of the stroke on the opening side of the medium storage chamber to shift the movable wall to a posture parallel to the fixed wall. 2. The link device according to claim 1, further comprising: a first rotary link having a detecting portion located at one end near an end of a stroke of an opening of the medium storage chamber at an operation side end of the movable wall; 2. The medium feeding device according to claim 1, further comprising a second rotating link slidably and rotatably connected and having a movable wall attraction portion at the other end.