JP2001098806A - Coin return lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coin return lock, capable of being mounted to a mounting port on the conventional door side, even if the whole is miniaturized to reduce costs and to provide a grip part for the coin return lock used for a locker. SOLUTION: By inserting a coin through an insertion slot to enable locking, and for unlocking, the coin is returned from a return part, at the same time, in a coin return lock to be unlocked, a coin return lock 1 is constituted of a coin guard 11 formed by having at least guard plates 11g and 11i, locked with one end of a cam 4 rotated in the locking and unlocking directions with the lock to engage with the cam to reciprocate, opening and closing the insertion slot and return outlet and a sense cam 11b for allowing the coin inserted from the insertion slot to move to the return outlet when locking it to a guard main body 11c and a coin detection lever 10 set in the lock with the sense cam and provided to a frame body of the coin return lock, so as to allow or prevent the movement toward the locking direction of the coin guard according to the coin inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coin return lock which is used, for example, in a locker to insert and lock coins, return the coins when unlocking, and open a door.

[0002]

2. Description of the Related Art Conventionally, a coin return lock used for a door of a plurality of collective lockers or the like is provided with a mechanism for returning coins such as 100 yen coins. It is known that the coin has a complicated mechanism because it is necessary to prevent the coin from being illegally taken out and to return the coin to a return slot when the coin is unlocked.

[0003]

However, the coin return lock is assembled in a frame made of synthetic resin,
Since the coin return lock is built into a predetermined mounting opening in the locker door, if the mechanism of the coin return lock is complicated and large in size, there is an inconvenience that a space for previously providing a grip portion in the frame body is lost.

[0004] In this case, if a grip portion is provided on the frame, there is a problem that the frame becomes large and the shape of the mounting opening changes, so that a coin return lock cannot be incorporated into the mounting opening of the conventional locker door.

Further, it is necessary to prevent unauthorized operations from being performed through the coin insertion slot and the return slot. However, if the prevention mechanism is complicated, the cost of assembling and manufacturing the coin return lock increases. There is a problem that. The coin return lock according to the present invention is proposed to solve such a problem.

[0006]

The gist of the present invention for solving the above-mentioned problems of the coin return lock according to the present invention is that a coin can be locked by inserting a coin from an insertion slot, and a coin return slot is provided upon unlocking. In a coin return lock for returning and unlocking the coin from a lock, the lock is engaged with one end of a cam which is rotated in a locking direction and an unlocking direction by a lock, and is reciprocated in conjunction with the cam. A guard plate that opens and closes a return slot, a coin guard having at least a guard cam on a guard body that allows a coin inserted from the insertion slot to move to the return slot when locking, and a coin insertion slot. A coin detection lever provided on a frame of the coin return lock, wherein engagement with the sense cam is set so as to allow or prevent movement of the coin guard in the locking direction depending on the presence or absence of the coin guard. Is that is configured provided.

The sense cam has a base portion rotatably provided on the guard body of the coin guard, and a notch portion provided at a tip portion for moving a coin to a return slot.
The notch portion is urged by an elastic member so as to prevent the coin guard from moving in the locking direction by engaging a part of the frame of the coin return lock; The coin return lock is rotatably provided on the frame, and the lever's own weight is arranged such that the lever tip engages with the notch of the sense cam, and the lever rear end contacts the inserted coin, When the rear end of the lever is rotated by the coin, the front end of the lever is disengaged from the notch of the sense cam; a swingable crank cam is provided on the frame of the coin return lock. The crank cam is provided with a cam groove for swinging the crank cam by rotation of the cam, and an engaging portion for transmitting the swing motion of the crank cam to the reciprocating movement of the coin guard; including Than it is.

According to the coin return lock of the present invention,
The frame has a simple structure having a coin guard and a coin detection lever, and is compact. As a result, a grip portion can be formed in a part of the coin return lock. Also, since the coin guard is formed by integrally providing the guard plate and the sense cam on the coin guard body, the number of parts is reduced.

The notch in the sense cam is for allowing the inserted coin to move to the return slot, and as if the coin detection lever was tampered with from the insertion slot or the like as if a coin was inserted. Even in the state, the coin guard also serves to prevent the coin guard from moving in the locking direction, so that not only the number of parts is reduced but also a countermeasure for preventing unauthorized operation.

The coin detection lever is provided such that a rotation shaft is provided at one end in the longitudinal direction of the lever, so that the lever is rotated by its own weight, and the tip of the lever is always engaged with the notch of the sense cam. Therefore, the presence or absence of a coin can be detected with a simple configuration without requiring any means or member for engaging with the urging means or the like.

[0011]

Next, a coin return lock according to the present invention will be described with reference to the drawings. As shown in FIG. 1, a coin return lock 1 is provided on a synthetic resin frame frame 2 on which components such as a lock and a frame are mounted, and a lock 3 such as a cylinder lock and a rear of the lock 3. The cam 4 is rotated coaxially with the rotation of the lock 3 within a predetermined angle range to perform locking / unlocking, and the coin slot 5 disposed in front of the frame 2 is returned. It is configured to have a mouth 6 and a grip portion 7 disposed near the side of the inlet 5 and the return mouth 6. The coin return lock 1 is to be fitted to a door 8 such as a locker, for example.

A specific configuration of the coin return lock 1 relating to the locking / unlocking operation and the method of returning coins will be described. As shown in FIG. 2, a lock hole (not shown) provided on the locker body side and a connection hole 4a provided behind the lock 3 for rotating in conjunction with the rotation of the key. A mating concave portion 4b, a rotation transmitting convex portion 4c provided on the side opposite to the engaging concave portion 4b around the connection hole 4a,
There is a cam 4 having a stud 4d planted substantially orthogonally from the back surface of the cam c.

The frame 9 of the coin return lock 1 is made of L-shaped flat plates 9a and 9b made of metal or synthetic resin.
The one flat plate 9a has an arc-shaped escape groove 9c for projecting the stud 4d of the cam 4 to the back side of the flat plate 9a, and an engagement protrusion 11a of a coin guard 11 (see FIG. 3) described later. A hole 9d as an escape hole for projecting the back side and reciprocating in the horizontal direction, screw holes 9e and 9f for fixing the frame frame 2 with screws, and a notch 9g for positioning the assembly. Is provided.

On the other flat plate 9b, a coin detecting lever 10 rotatably mounted by a pin 12 is provided on the front side. A notch 10a is provided at the tip of the coin detecting lever 10 so as to engage with a sense cam 11b of a coin guard 11 (see FIG. 3) described later.

Further, the rear end 10 of the coin detecting lever 10
b is provided so as to bend in a substantially orthogonal direction and project from the back side of the flat plate 9b. Thus, the coin detecting lever 10 is provided so as to be rotatable about the pin 12 in a vertical direction like a seesaw.

A window 9 is provided slightly above the corners of the flat plates 9a and 9b.
i is provided. The window 9i is provided for projecting the tip of the sense cam 11b of a coin guard 11 (see FIG. 3) described later to the back of the flat plate 9b. This window 9
A hole 9j for locking the end of the torsion spring is provided on i.

The coin guard 11 is shown in FIG.
As shown in (b) and (c), a sense cam 11b pivotally mounted on a flat guard body 11c made of metal or synthetic resin by a pin 13 with a pin 13, and one end is hooked on the guard body 11c. And a coil spring 11d as an elastic member for constantly biasing the sense cam 11b in a predetermined direction.
And a stopper 11e for stopping rotation of the sense cam 11b.
A guided plate 11f bent and extended from the rear end of the guard main body 11c to have a substantially U-shape;
An engagement protrusion 11a protruding rearward from 1f, and an upper guard plate 11g and a lower guard plate 11i bent substantially orthogonally from the tip of the guard body 11c are provided and formed respectively.

A notch 11j is provided in the horizontal flat portion of the sense cam 11b for dropping and moving coins to the return port 6 side.

As shown in FIGS. 4A and 4B, a crank cam 15 which is pivotally mounted on a pin 14 is provided on the back surface of the flat plate 9a of the frame 9. ing. A flat body 9 is provided at an intermediate portion of the crank cam 15.
An engaging hole 15a as an engaging member is provided at a position corresponding to the through hole 9d of FIG. 5a and engages with the engaging protrusion 11a protruding from the through hole 9d. A cam groove 15 is formed by connecting a linear groove 15d for transmitting the rotation of the cam 4 to the crank cam 15 with an arcuate groove 15c by engagement of the tip of a stud 4d (see FIG. 2).
b is provided.

In assembling the frame 9 and the coin guard 11, the frame 9 shown in FIG.
The sense cam 11b of the coin guard 11 shown in FIG.
The window 9i is inserted from the front side to the back side, and the engagement protrusion 1
1a is inserted from the front side to the back side of the through hole 9d to engage with the engaging hole 15a of the crank cam 15, and further, at a position near the notch 11j of the sense cam 11b, the notch 10a of the coin detecting lever 10 is It is assembled by engaging with the sense cam 11b.

As shown in FIGS. 5 (a), 5 (b) and 5 (c) to FIGS. 6 (a) and 6 (b), the tip of the stud 4d of the cam 4 is inserted into the cam groove 15b of the crank cam 15. The torsion spring 16 whose spring end is locked is engaged with the locking groove at the tip of the stud 4d and the hole 9j of the flat plate 9a.

The coin return mechanism assembled as described above is mounted on the back side of the frame 2 as shown in FIG. Reference numeral 17 denotes a coin cover, which is a flat plate made of metal or synthetic resin and existing in a direction perpendicular to the plane of the drawing. A coin is inserted between the cover 17 and the opposing surface of the flat plate 9b in the coin return mechanism.

The coin return lock 1 configured as described above
The operation of is described. In a state in which a coin (for example, a 100 yen coin) 20 is not inserted, as shown in FIG. 8, the coin detection lever 10 that is rotatable around the pin 12 rotates clockwise by its own weight, Notch 10a is in contact with and engaged with the sense cam 11b.

As shown in FIG.
When 0 is inserted, the coin 20 is supported by the sense cam 11b and the rear end portion 10b of the coin detection lever 10 due to its diameter.

Then, due to the weight of the coin 20, the rear end portion 10b is lowered in the direction of the arrow, and the notch 10a is raised about the pin 12 in the direction of the arrow. In this state,
The engagement between the coin detecting lever 10 and the sense cam 11b is released, and the vertical end surface of the window 9i of the flat plate 9b and the front end surface 11k of the sense cam 11b are pressed by the coin 20 as shown in FIG. Since the sense cam 11b and the coin guard 11 are maintained in a position where they do not touch each other, the sense cam 11b and the coin guard 11 can be moved in the horizontal direction (arrows in the drawing).

As a result, in FIG. 1, the key is inserted into the lock 3 and rotated approximately 90 ° in a counterclockwise direction.
The cam 4 is rotated about the same axis (around the center axis of the connection hole 4a: see FIG. 2), and the engaging recess 4b of the cam is locked by the locking rod on the rocker body side to lock.

By the operation from the unlocked state to the locked state, as shown in FIG. 10, the crank cam 15 swings in the direction of the arrow by the stud 4d of the cam 4, and the engaging hole 15a
The engagement protrusion 11a of the coin guard 11 engaged with the is moved in the direction of the arrow, and the sense cam 11b also moves in the direction of the arrow.

By the movement of the sense cam 11b, FIG.
As shown in (b), the notch 11j reaches the position of the coin 20, and due to the presence of the notch, the coin 20 loses the contact state with the front end face 11k and drops, and the return opening 6
Will move to the side. Thus, since the weight of the coin 20 has been removed, the coin detection lever 10 rotates about the pin 12 by its own weight, and the tip end thereof comes into contact with the sense cam 11b.

Further, the coin guard 11 has been moved by a predetermined amount in the horizontal direction, so that the insertion slot 5 and the return slot 6 have the upper guard plate 11g and the lower guard plate 11i of the coin guard 11.
Slides out and closes the openings of the two openings.

Thus, the locker or the like is locked (see FIG. 1), and the key can be removed from the lock 3. Again, to open the locker door, the lock 3 is rotated in the unlocking direction with a key, and as shown in FIG. 10, the cam 4 is rotated approximately 90 ° counterclockwise about the connection hole 4a, The rotation of the stud 4d causes the cam groove 15b to swing the crank cam 15 in the direction opposite to the locking direction, and simultaneously causes the engaging projection 11a of the coin guard 11 to move in the direction opposite to the arrow direction by the engaging hole 15a. And
The coin guard 11 is moved in a lateral direction (a release direction opposite to the arrow).

When the coin guard 11 moves in the release direction, the upper guard plate 11g and the lower guard plate 11i are retracted from the openings of the insertion slot 5 and the return slot 6. Therefore,
The coin 20 can be taken out from the return slot 6. Further, since the coin guard 11 retreats and returns to the original position, the notch 10
a engages with the notch 11j of the sense cam 11b,
The state is again as shown in FIG.

Next, measures for preventing mischief will be described.
For example, as shown in FIG.
If you try to lock by inserting the cutter blade 21 and inserting the sense cam 11b without inserting the
Since the rear end face of 1b is in contact with the surface of the flat body 9a so that there is no gap, the sense cam 11b is not pushed deep, and the engagement state with the tip end of the coin detection lever 10 is maintained. And cannot be locked.

In addition, as shown in FIG.
Inserting the blade 21 of the cutter from the insertion slot 5 and pressing the rear end 10b of the coin detection lever 10 downward to raise the notch 10a around the pin 12, the engagement between the coin detection lever 10 and the sense cam 11b. May be canceled.

After that, when the lock 3 is turned by a key to rotate the cam 4 in the locking direction, as shown in FIG. 13A, since the coin detecting lever 10 is disengaged, the sense cam 11b is slightly (For example, about 1.6 mm), but since the coin 20 has not been inserted, the urging force of the coil spring 11d causes the sense cam 11b to move forward (see the arrow in the figure) as shown in FIG. Direction), and the notch 11j is inserted into the window 9i of the flat plate 9b.
On the side wall.

As a result, the side end surface 11m of the notch 11j of the sense cam 11b comes into contact with the side wall of the window 9i, and the sense cam 11b cannot move laterally any further. In this manner, as shown in FIG. 14A, the sense cam 11b cannot move laterally, so that the engagement protrusion 11a of the coin guard 11 cannot move laterally. Therefore, the crank cam 1
The hole 15a of No. 5 is inserted into and engaged with the engaging projection 11a, so that the crank cam 15 cannot swing.

The stud 4d of the cam 4 is
As shown in FIG. 14 (b), since the cam groove 15b is engaged in the linear groove 15d for further swinging the crank cam 15, the crank cam 1 as described above is engaged.
Since the cam 5 cannot swing, the cam 4 cannot rotate in the locking direction. In this way, even if an unauthorized operation is attempted with the blade 21 of the cutter, locking without the coin 20 is prevented.

It should be noted that even if the lock 3 and the cam 4 are turned in the locking direction without simply inserting the coin 20, even if the sense cam 11b moves slightly in the horizontal direction, as shown in FIG. The notch 10a engages with the notch 11j of the sense cam, thereby preventing the lateral movement of the sense cam 11b. As a result, the immovable state is transmitted via the engagement protrusion 11a of the coin guard 11 and the crank cam 15. The rotation of the cam 4 in the locking direction is prevented.

As described above, the coin return mechanism is constituted by a simple mechanism and compact, and the coin return lock 1 is substantially the same size as the conventional one but the frame frame 2
It is now possible to provide a gripping portion 7 on the base. Further, the illegal operation cannot be performed by the coin detecting lever 10 and the sense cam 11b.

[0039]

As described above, the coin return lock according to the present invention can be locked by inserting a coin from the slot, and when unlocking, the coin is returned from the coin return slot and the coin is returned. In a coin return lock to be unlocked, the lock is engaged with one end of a cam which is turned in a locking direction and an unlocking direction by a lock and reciprocated in conjunction with the cam to open and close the insertion port and the return port. A guard guard, a coin guard having at least a guard cam on the guard body that allows a coin inserted from the insertion slot to move to the return slot when locked, and locking of the coin guard depending on whether or not a coin is inserted. And a coin detection lever provided on a frame of the coin return lock, the engagement being set with the sense cam so as to allow or prevent the movement in the direction. Therefore, the coin guard returns the coins and closes the insertion slot and the return slot, thereby reducing the number of components, resulting in a compact mechanism, and has an excellent effect of securing a space for providing a grip portion. It is. Further, the coin detecting lever has an excellent effect that an unauthorized operation can be prevented with a simple configuration.

The sense cam has a base portion rotatably provided on the guard body of the coin guard, and a notch portion provided at a tip portion for moving a coin to a return slot.
Since the notch is engaged with a part of the frame of the coin return lock and is urged by the elastic member so as to prevent the coin guard from moving in the locking direction, the number of parts is reduced and cost is reduced. This has an excellent effect of reduction.

The coin detecting lever is rotatably provided on the frame of the coin return lock. The lever's own weight causes the lever tip to engage with the notch of the sense cam, and the lever rear end to the inserted coin. When the rear end of the lever is rotated by the coin, the tip of the lever is disengaged from the notch of the sense cam, and the inserted coin moves to the return slot. Allow
Even in the state of unauthorized operation, the function of preventing the coin guard from moving in the locking direction is also used, so that the number of parts is reduced and the structure of the coin return mechanism is simplified.

Further, a swingable crank cam is provided on the frame of the coin return lock, and the crank cam includes:
Since the cam groove for swinging the crank cam by the rotation of the cam and the engaging portion for transmitting the swing motion of the crank cam to the reciprocating movement of the coin guard are provided, the operation of the cam is ensured by the coin. It is transmitted to the guard, and has a simple configuration with a small number of parts.

[Brief description of the drawings]

FIG. 1 is a front view of a coin return lock 1 according to the present invention.

FIG. 2 is a perspective view of a frame 9 and a cam 4 of the coin return lock 1 according to the present invention.

FIG. 3 is a perspective view (a), a plan view (b), a rear view (c), and a side view (d) of the coin guard 11 in the coin return lock 1 according to the present invention.

FIG. 4 is a rear view (b) and a side view (b) of the frame 9 in the coin return lock 1;

FIG. 5 is a front view (a), a left side view (b), and a plan view (c) of a coin return mechanism in the coin return lock 1.

FIG. 6 is a rear view (a) and a right side view (b) of a coin return mechanism in the coin return lock 1;

FIG. 7 is an explanatory view showing a state in which a coin return mechanism is assembled to the frame 2 to form a coin return lock 1;

FIG. 8 is an explanatory diagram showing an engagement relationship between a sense cam and a coin detection lever in the coin return lock 1;

FIG. 9 is an explanatory view (a) showing a cross section of a use state of the coin return lock 1, and a plan view (b) showing a partly enlarged view.

FIG. 10 shows a state in which the coin return lock 1 is locked.
Frame body 9, cam 4, sense cam 11b and crank cam 15
FIG. 7 is an explanatory diagram showing the movement of the above.

11A and 11B are an enlarged plan view (a) and a cross-sectional view (b) illustrating an engagement state between the coin detection lever 10 and the sense cam 11b when an unauthorized operation is performed in the coin return lock 1.

FIG. 12 is a cross-sectional view showing movement of the coin detection lever 10 when the coin return lock 1 is urged.

FIGS. 13A and 13B are explanatory diagrams for explaining the movement of the sense cam when the illegal operation is performed.

FIGS. 14A and 14B are an explanatory diagram (A) showing an operational relationship between the crank cam 15 and the cam 4 when the illegal operation is performed, and a partially enlarged explanatory diagram (B).

FIG. 15 is an explanatory diagram illustrating the movement of the sense cam when the lock 3 is turned without inserting the coin.

[Explanation of symbols]

1 coin return lock, 2 frame frame, 3 locks,
4 cam, 4a connecting hole, 4b engaging concave portion, 4c convex portion, 4d stud, 5 input port, 6 return port, 7 gripping section, 8 door, 9 frame body, 9a, 9b flat body, 9c
Escape groove, 9d through hole, 9e, 9f screw hole, 9g notch, 9i window, 9j hole, 10 coin detection lever, 10a notch, 10b rear end, 11 coin guard, 11a engagement protrusion, 11b sense cam , 11
c Guard body, 11d Coil spring, 11e
Stopper, 11f Guided plate, 11g Upper guard plate, 11i Lower guard plate, 11j Notch, 12 pin, 13, 14 pin, 15 crank cam, 15a
Engaging hole, 15b cam groove, 15c arc-shaped groove, 15d
Straight grooves, 16 torsion springs, 17 coin cover, 18 back cover, 20 coins, 21 cutter blade.

Claims (4)

[Claims] 1. A coin return lock, which can be locked by inserting a coin from an insertion slot and returning and unlocking the coin from the coin return slot when unlocking, the locking direction and unlocking depending on the lock. A guard plate that is engaged with one end of a cam that is rotated in the direction and reciprocates in conjunction with the cam to open and close the insertion slot and the return slot, and that a coin inserted from the insertion slot is locked. A coin guard having at least a guard body on the guard body to allow the guard to move to the return port, and the sense cam to allow or prevent the coin guard from moving in the locking direction depending on whether or not coins are inserted. And a coin detection lever provided in a frame of the coin return lock with engagement set therein. The sense cam has a base portion rotatably provided on a guard body of the coin guard, and a notch portion provided at a leading end portion for moving a coin to a return slot, wherein the notch portion has a coin return. The coin return lock according to claim 1, wherein the lock is urged by an elastic member so as to prevent the coin guard from moving in the locking direction by engaging a part of the lock frame. 3. The coin detecting lever is rotatably provided on a frame of the coin return lock, and the lever's own weight causes the lever tip to engage with the notch of the sense cam, and the lever rear end is inserted. 2. The lever according to claim 1, wherein the lever is pivoted by the coin so that the lever rear end is disengaged from the notch of the sense cam when the rear end of the lever is rotated by the coin. The coin return tablet described. 4. A swingable crank cam is provided on a frame of the coin return lock. The crank cam has a cam groove for swinging the crank cam by the rotation of the cam, and a swing groove of the crank cam. The coin return lock according to claim 1, further comprising: an engagement portion that transmits the movement to the reciprocating movement of the coin guard.