JPH0546133Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Table of contents] - Overview - Industrial application field - Conventional technology - Problems that the invention aims to solve - Means for solving the problems - Effects - Examples - Effects of the invention [ Overview] A sliding shutter of a bill slot of an automatic teller machine, etc. is opened and closed by a rotary lever connected to a motor via a one-way clutch, and when the lever is rotated in the shutter closing direction, the longitudinal direction of the lever is in the sliding direction. A shutter mechanism capable of holding the shutter in a locked state at this position by providing means for stopping the rotation of the lever in that direction at a position further rotated from a position parallel to the lever.

[Industrial application field]

The present invention relates to a sliding shutter mechanism for a bill slot in an automatic teller machine or the like.

[Conventional technology]

A conventional shutter mechanism is shown in FIG. A rack 22 is fixed to the shutter 21, and a pinion 23 meshes with the rack 22. The pinion 23 is driven by a motor 27 via a belt mechanism 24.
A locking wheel 25 and a spring clutch 26 are interposed between the belt mechanism 24 and the motor 27. A lock lever 28 driven by a plunger magnet 29 engages with the locking wheel 25. The spring clutch 26 engages and is connected when the shutter is in the opening direction and transmits the rotation of the motor. When the shutter is in the closing direction, it is structured so that if a hand or the like pinches it due to frictional slippage, the shutter will stop closing. The shutter is locked in the closed position by driving the plunger magnet 29 to engage the pin at the tip of the locking lever 28 into the recess of the locking foil 25.

[Problem that the invention attempts to solve]

Conventional shutter mechanisms use plunger magnets, lock levers, locking foils, etc. as locking means, making the structure complicated and expensive. Further, a phase shift between the lock mechanism and the shutter tends to occur, and adjustment to align the shutter with the locked position is troublesome.

The present invention has been devised in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a shutter mechanism that has a simple structure and is capable of opening, closing, and locking the shutter.

[Means for solving problems]

In order to achieve the above object, the present invention includes a shutter that closes the opening and that moves back and forth parallel to the shutter surface to open and close the opening, and a shutter that rotates on a rotating surface parallel to the shutter surface and that A shutter opening/closing lever for opening/closing movement, a stud provided on the shutter opening/closing lever, a drive unit for rotating the shutter opening/closing lever, and the stud engage, and the stud is parallel to the surface of the shutter, and A long hole provided in a direction perpendicular to the opening/closing direction of the shutter, and having an end portion that the stud comes into contact with when the shutter closes the opening, at a position where the shutter opening/closing lever is further rotated in the closing direction from the maximum closing position. To provide a shutter mechanism characterized by comprising the following.

[Effect]

The shutter slides and opens and closes as the lever rotates. When the shutter is in the open direction, the one-way clutch engages and connects, transmitting the motor rotation. When the shutter is in the closing direction, it closes at the same speed as the motor rotation, but if a strong force is applied to the shutter, the one-way clutch causes the motor to idle and no rotation is transmitted. The lever rotates in the shutter closing direction and stops rotating at a position where the lever has been rotated a little further than the position where the shutter has been moved the maximum distance, that is, where the longitudinal direction of the lever is parallel to the shutter sliding direction. Close the shutter. In this state, even if the shutter is pressed in the opening direction, the lever is in a stopped state and cannot be rotated in a direction beyond this position, so that the shutter is locked.

〔Example〕

The configuration of the shutter mechanism according to the present invention is shown in FIG. A shutter 1 is provided at a position covering a bill slot 8 of an automatic teller machine. The shutter 1 is slidable along the guide roller 9 in the direction of arrow B. The shutter 1 is provided with a long hole 11 perpendicular to the sliding direction. A lever 2 is rotatably mounted on the main body side of the automatic teller machine around a shaft 13 as shown by arrow A. A stud 10 is provided at the tip of the lever 2. The stud 10 fits into the elongated hole 11 of the shutter 1. Due to the engagement between the stud 10 and the elongated hole 11, when the lever 2 rotates as shown by arrow A, the shutter 1 opens and closes as shown by arrow B. 3 is a stopper for stopping the shutter 1 in the open position. A rotating shaft 13 of the lever 2 is connected to a pulse motor 5 via a one-way clutch 4. A spring 12 is engaged with the lever 2 and applies a force that constantly rotates the shutter in the closing direction. The position where the lever 2 rotates in the closing direction of the shutter 1 and moves the shutter by the maximum distance,
That is, the rotation of the lever 2 is stopped at a position where the lever 2 is rotated somewhat in the same direction as the closing direction as shown by arrow C from the maximum closed position. In this case, if the lever 2 is further rotated, a slight gap will be created between the shutter 1 and the housing, but once the housing is covered, this gap will not be visible to the customer.

For this purpose, a detector 6 made of a photocoupler or the like is provided corresponding to this stop position, and a circuit is configured so that the rotation of the pulse motor 5 that detects the lever 2 is stopped by the detector 6. A stopper may be further provided to stop the rotation of the lever 2 at this position. Reference numeral 7 denotes a detector for detecting the open position where the shutter 1 is in contact with the stopper 3. The circuit is configured so that when the detector 7 detects the shutter 1, the rotation of the pulse motor 5 is stopped.

When the shutter 1 is opened, the lever 2 rotates counterclockwise in the figure. At this time, the one-way clutch 4 is engaged, the clutch is connected, and the rotation of the motor is transmitted. Shutter 1 opens and stopper 3
When the shutter 1 comes into contact with the shutter 1, the detector 7 detects the shutter 1 and the rotation of the motor 5 is stopped. At this time, since the motor is connected by the clutch action, the shutter is stopped and held at the open position by the natural holding force of the motor, regardless of the force of the spring 12 in the closing direction.

When the shutter 1 is closed, the lever 2 rotates clockwise in the figure. Due to the action of the one-way clutch, the rotational force of the motor is not transmitted, but since the lever 2 is pulled in the closing direction by the spring 12, it rotates at the same speed as the motor. If an abnormal force is applied, such as when a hand is caught during the shutter closing operation, the shutter will remain stopped due to the action of the clutch, and only the motor will idle. When the lever 2 rotates and reaches the aforementioned closed position, the detector 6 detects this and the rotation of the motor is stopped. In this state, even if a force in the opening direction is applied to the shutter 1, the lever 2 cannot be rotated beyond this stop position, so the shutter is kept locked in the closed state.

[Effect of idea]

As explained above, in the shutter mechanism according to the present invention, the lever for opening and closing the shutter is further rotated in the same direction as the closing direction from the maximum closing position to stop the closing operation of the shutter. This can be done with a lever.

Therefore, there is no need to provide a special locking mechanism to prevent the shutter from opening.

Therefore, the shutter opening/closing mechanism including the shutter opening prevention mechanism can be made simple, compact, and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional technique. 1...Shutter, 2...Lever, 4...One-way clutch, 5...Pulse motor, 10...Stud, 11...Slot hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A shutter that closes an opening and that moves back and forth parallel to the shutter surface to open and close the opening, and a shutter that rotates on a rotating surface parallel to the shutter surface to open and close the shutter. a shutter opening/closing lever, a stud provided on the shutter opening/closing lever, a drive unit for rotating the shutter opening/closing lever, and the stud engage, and the stud engages with the shutter opening/closing lever parallel to the surface of the shutter and opening/closing the shutter. an elongated hole that is provided in a direction perpendicular to the opening and has an end that the stud comes into contact with at a position where the shutter opening/closing lever is further rotated in the closing direction from the maximum closing position when the shutter closes the opening; A shutter mechanism characterized by the following features: