JPH0991487A - Shutter opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To release a lock and open/close a shutter by one motor by making a driving force transmission means transmit driving force to an opening/closing means for opening and closing the shutter after driving a lock means and releasing the lock. SOLUTION: A cam gear 5 provided with a cam 7 for rotating a lock arm 8 and a shutter gear 3 for opening and closing the shutter are coaxially provided, the driving force of the motor 12 is transmitted to the cam gear 5 and a timing for transmitting the driving force from the cam gear 5 to the shutter gear 3 is delayed for the length of an oblong hole 4 by pressing the end part of the oblong hole 4 provided in the shutter gear 3 by a pin 6 provided in the cam gear 5 for the transmission of the driving force from the cam gear 5 to the shutter gear 3. That is, after the lock is released by the cam 7 by the rotation of the lock arm 8, the shutter is opened/closed. Thus, the release of the lock and the opening/closing of the shutter are performed by one motor 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing mechanism provided in a bill depositing / dispensing device and the like, and more particularly to a shutter locking mechanism and an opening / closing mechanism.

[0002]

2. Description of the Related Art A shutter provided at a customer entrance of a banknote depositing / dispensing device or the like is provided with a lock mechanism so that it cannot be opened carelessly when closed. As the operation of opening the shutter, the shutter is opened after unlocking the lock. Conventionally, the driving mechanism is separate for opening and closing and for locking.

[0003]

As described above, since the conventional shutter opening / closing mechanism is provided with the separate driving mechanism for opening / closing and for locking, it is difficult to downsize the device. Also,
Control was complicated because a separate drive mechanism had to be controlled.

[0004]

In order to solve the above-mentioned problems, the present invention provides a rotatable lock arm for locking the movement of the shutter in the opening direction and a lock arm for rotating and unlocking the lock arm. A cam gear having a cam for performing, a motor for driving the cam gear, and a shutter gear that is provided coaxially and rotatably with the cam gear and that opens and closes a shutter, and has a long hole in one of the cam gear and the shutter gear. On the other hand, the pin that goes into the elongated hole is projected so that the driving force is transmitted from the cam gear to the shutter gear by the combination of the pin and the elongated hole.

[0005]

1 is a schematic configuration diagram of a shutter opening / closing mechanism showing an example of an embodiment of the present invention. In the figure, reference numeral 1 is a shutter rack, and 2 is a lock pin, which are attached to the shutters respectively. When the shutter rack 1 moves in the direction of arrow a, the shutter opens, and when it moves in the direction of arrow b, the shutter closes. It has become.

Reference numeral 3 denotes a shutter gear that meshes with the shutter rack, and the shutter gear 3 is provided with an elongated hole 4. Reference numeral 5 denotes a cam gear provided coaxially with the shutter gear 3. The cam gear 5 is provided with a pin 6 which is inserted into the elongated hole 4 provided in the shutter gear 3, and the pin 6 is provided. A cam 7 is provided on the surface opposite to the surface.

Here, the shutter gear 3 and the cam gear 5
The cam 6 and the shutter gear 3 transmit the driving force from the cam gear 5 by pushing the end surface of the slot 4 with the pin 6. Reference numeral 8 denotes a lock arm, which is capable of rotating up and down about a fulcrum 9, and a spring (not shown) applies a rotating force in the direction of arrow c.

Reference numeral 10 is a lock portion provided on the tip side of the lock arm 8, and the lock portion 10 is caught by the lock pin 2 to lock the shutter. Reference numeral 11 is a cam pin provided in the middle of the lock arm 8, and a force for rotating the lock arm 8 in the arrow c direction is applied,
The cam pin 11 is in contact with the cam 7 of the cam gear 5, and when the cam gear 5 rotates, the lock arm 7 rotates about the fulcrum 9 according to the shape of the cam 7.

Reference numeral 12 is a motor, 13 is a gear group for transmitting the driving force of the motor to the cam gear 5, and 14 is a torque limiter.
The drive force of the motor 12 is not transmitted when the shutter is overloaded. A sensor 15 detects the lock arm 8 to detect whether or not the shutter is closed.

FIG. 2 is a block diagram showing the operation of the shutter opening / closing mechanism in the embodiment of the present invention. The opening / closing operation of the shutter in this embodiment will be described below. To open the shutter, the motor 12 rotates the cam gear 5 in the direction of arrow d from the state shown in FIG. Cam gear 5
When is rotated in the direction of arrow d, as shown in FIG.
The cam 7 pushes up the cam pin 11 to rotate the lock arm 8 in the direction of arrow e. In the state shown in FIG. 1A, when the shutter is moved in the direction of arrow a, the lock pin 2 of the shutter is caught by the lock portion 10 of the lock arm 8 and the shutter cannot be opened, but the lock arm 8 cannot be opened.
Is rotated in the direction of arrow e, the lock arm 8 retracts, and the movement of the lock pin 2 is not obstructed.

Here, when the opening operation of the shutter is performed, the positional relationship between the pin 5 and the elongated hole 4 is initially as shown in FIG.
It is in the position shown. Therefore, when the cam gear 5 is rotated in the direction of the arrow d, the pin 6 can move in the elongated hole 4, and at this time, the driving force is not transmitted to the shutter gear 3. As a result, by driving the motor 12, first, the lock arm 8 for releasing the lock is pushed up, and at this time, the shutter does not move.

When the cam gear 5 is rotated to the position where the lock lever 8 is pushed up, the pin 6 hits the upper end of the elongated hole 4, and from this time, the driving force is transmitted from the cam gear 5 to the shutter gear 3. When the shutter gear 3 rotates together with the cam gear 5 in the direction of arrow d, the shutter rack 1 engaged with the shutter gear 3 moves in the direction of arrow a as shown in FIG. 2B, and the shutter opens. At this time, the lock arm 8 is still pushed up by the cam 7, so that the lock pin 2 is locked by the lock arm 8.
Therefore, the shutter can be opened without being caught. Then, when the detection means (not shown) detects that the shutter is completely opened, the driving of the motor 12 is stopped.

To close the shutter, the cam gear 5 is rotated in the direction of arrow f by the motor 12 from the state shown in FIG. 2 (b). At this time, since the pin 6 starts moving from the lower end side of the elongated hole 4, the driving force is not transmitted to the shutter gear 3 at first. When the cam gear 5 rotates to a position where the pin 6 contacts the upper end of the elongated hole 4, the driving force is transmitted to the shutter gear 3 and the shutter gear 3 rotates in the direction of arrow f together with the cam gear 5.

As a result, as shown in FIG. 2 (c), the shutter rack 1 moves in the direction of arrow b and the shutter closes. When the cam gear 5 is rotated in the direction of the arrow f, the cam pin 11 reaches the portion where the diameter of the cam 7 is small. Since the lock arm 8 is pushed in the direction of arrow c by a spring (not shown), as the diameter of the cam 7 becomes smaller, the lock arm 8 rotates in the direction of arrow c.

At this time, when the shutter rack 1 is moving in the direction of arrow b, the cam gear 5 further rotates in the direction of arrow f, and the cam pin 11 reaches the bottom of the cam 7, the lock arm 8 further moves in the direction of arrow c. It rotates and the lock portion 10 is caught by the lock pin 2 as shown in FIG.
Then, the sensor 15 detects the lock arm 8 to detect the closing of the shutter, and the driving of the motor 12 is stopped.

As described above, according to the present invention, the cam gear 5 having the cam 7 that rotates the lock arm 8 and the shutter gear 3 that opens and closes the shutter are coaxially provided, and the driving force is transmitted to the cam gear 5 so as to transmit the driving force. The driving force is transmitted from the shutter gear 3 to the shutter gear 3 by pushing the end portion of the slot 4 provided in the shutter gear 3 with the pin 6 provided in the cam gear 5. Since the timing at which the driving force is transmitted to 3 is delayed, the lock can be released and the shutter can be opened and closed only by the rotation operation of the motor 12, and the mechanism can be simplified to reduce the size and reduce the size. Cost can be reduced.

Further, since the locking and unlocking and the opening and closing of the shutter can be performed only by controlling the rotation of the one motor, the control becomes easy.

[0018]

As described above, according to the present invention, either the cam gear having the cam for locking and unlocking the lock arm for locking the movement of the shutter in the opening direction or the shutter gear for opening and closing the shutter is used. The long hole is provided on one side, and the pin that goes into this long hole is projected on the other side, so that the driving force is transmitted from the cam gear to the shutter gear by the combination of the pin and the long hole.
The timing at which the driving force is transmitted from the cam gear to the shutter gear can be delayed, and the lock can be released and the shutter can be opened and closed with a single motor, and the mechanism can be simplified to reduce size and cost. You can

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a shutter opening / closing mechanism showing an example of an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an operation of a shutter opening / closing mechanism in the embodiment of the present invention.

[Explanation of symbols]

 1 Shutter Rack 2 Lock Pin 3 Shutter Gear 4 Oblong Hole 5 Cam Gear 6 Pin 7 Cam 8 Lock Arm 11 Cam Pin 12 Motor

Claims (2)

[Claims] 1. A locking means for locking movement of a shutter in an opening direction, a driving means for generating a driving force for driving the locking means, an opening / closing means for opening and closing a shutter, and a driving force for the driving means. A driving force transmitting unit that transmits the driving force to the opening / closing unit via the locking unit, and the driving force transmitting unit includes a delay unit that transmits the driving force to the opening / closing unit after the locking unit is driven and the lock is released. A shutter opening / closing mechanism. 2. The shutter opening / closing mechanism according to claim 1, further comprising: a rotatable lock arm that locks movement of the shutter in the opening direction; and a cam gear that has a cam that rotates the lock arm to lock and unlock the lock arm. A motor that drives the cam gear, and a shutter gear that is coaxial with the cam gear and is rotatably provided and that opens and closes the shutter, are provided with an elongated hole in one of the cam gear and the shutter gear, and in the other with the elongated hole. A shutter opening / closing mechanism characterized in that a pin to be inserted is projected to transmit a driving force from a cam gear to a shutter gear by a combination of a pin and an elongated hole.