JPH10205187A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a post-attachment type locking device attached to the front surface of an existing locking device, for locking and unlocking the existing locking device through a code which is different from that inherent to the existing code. SOLUTION: A locking device comprises a base plate 4 which is slidably inserted in a member having an existing locking device, a casing 5 attached to the base plate 4, a primary lock incorporated in the casing 5 and having a code which is different from that inherent to the existing locking device, a drive side rotating body engaged with a rotor in the primary lock, a driven side rotating body rotated by rotation of the drive side rotating body, a key member 40 attached to the driven side rotating body and urged in a direction in which it is inserted in a key hole 3 in the existing locking device, and a hole plate 46 engaged with the base plate 4 and the casing 5, which cannot be pulled out when the primary lock is locked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retrofit locking device which is mounted on the front surface of an existing locking device and locks and unlocks the existing locking device with a key having a code different from that of the existing locking device. is there.

[0002]

2. Description of the Related Art When an administrator collectively manages a plurality of devices provided with lock devices having different unique codes,
A key for each lock device must be selected from a bunch of keys having the code of each lock device, and locked and unlocked. For example, a plurality of pachinko machines installed in a pachinko amusement park are arranged by interweaving each type manufactured by a plurality of manufacturers, so that the code of the locking device of each pachinko machine is various, and the front of each pachinko machine is different. The management of locking and unlocking the door is a very laborious task.

In order to solve such inconvenience, a retrofitting locking device having a primary side lock unified into one code is attached to the front of an existing locking device having various codes, and the locking device is installed. To lock and unlock an existing locking device via a primary key with one key of an administrator by linking a key of a code suitable for the existing locking device to a rotating shaft controlled by the Has been adopted. Japanese Patent Application Publication No. 4-49433,
There is a technique described in Japanese Patent Publication No. 6-32682.

In each of the above publications, an existing locking device is provided on the surface of a front door frame of a pachinko machine, and a retrofitting locking device is screwed to the surface of the front door frame. The primary lock provided inside the retrofitting locking device is a cylinder lock, and this cylinder lock is disposed in front of the existing locking device so as to coincide with the rotation axis of the existing locking device.
Japanese Patent Publication No. 4-49433 discloses a "locking device for a playground" in which a key member engaged with the rear end of a rotor having a keyhole on the front surface is urged in a direction engaging with a keyhole of an existing locking device. Have been. In Japanese Patent Publication No. 6-32682, a "locking device for a playground" has a key member fixed to the rear end of the rotor inserted into a keyhole of an existing locking device.

[0005]

However, the locking device described above has the following problems. (1) If there is a protrusion on the front of the pachinko machine, it will hinder pachinko patrons, and the protrusion will prevent monitoring of biasing operations such as malicious mischief. However, since the locking device is installed coaxially in front of the existing locking device, the protruding length is long and a spring is provided to bias the key member in the direction of the existing locking device. Has a larger protruding length. (2) Since the retrofit locking device is screwed to the surface of the front door frame, the surface of the pachinko machine will have processing flaws, which will degrade the aesthetic appearance. There is.

(3) The screw for attaching the retrofitting locking device to the surface of the front door frame can be easily removed by a malicious third party with a screwdriver, and the retrofitting locking device can be easily removed. There is. (4) If the rotation axis of the lock on the primary side of the retrofitting locking device does not match the rotation axis of the existing locking device correctly, the key operation becomes heavy. An object of the present invention is to solve such a problem.

[0007]

In order to achieve the above object, a locking device according to the present invention used for retrofitting includes a case which is attached to a position on a wall surface which covers an existing locking device, A primary lock having a keyhole exposed on the surface thereof and having a key code different from that of the existing lock device, a drive-side rotating body that is rotated by a key operation of the primary lock, and a drive-side rotating body. A driven-side rotator that is disposed in a direction substantially parallel to the mounting surface and that is driven to rotate by the rotation of the driving-side rotator, and a keyhole of the existing lock device that is mounted on the driven-side rotator. And a key member to be inserted.

The existing lock device is provided on a wall surface of a front end portion fixed to the main body, and the case has a through hole through which a key hole of the existing lock device is exposed, and is slidable on the front end portion. It can be configured to be fixed to a base plate mounted on the base plate. An engaging projection is provided on one of the driving rotator and the driven rotator, a plate restraining groove formed substantially parallel to the surface of the base plate is provided on the base plate, and the case is continuous with the plate restraining groove on the case. An opening through which the engaging projection can pass at an unlocking angle of the primary side lock, and an opening communicating with the opening in a hold plate insertable into the plate restraining groove and the plate inserting groove. It is preferable that a hole in which the engagement protrusion is rotatable is provided, and a locking surface with which the engagement protrusion having a locking angle is engaged is provided in the hole.

[0009] The engagement projection may be configured to be inserted from the plate restraining groove into a projection insertion hole opened on the surface of the base plate. It is preferable that the key member is urged in a direction of engaging with a key hole of the existing lock device. The driving-side rotator and the driven-side rotator may be gears that mesh with each other, or may be configured to be connected by a rotation transmitting link.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings when it is installed in a pachinko playground. 1 is a longitudinal sectional view of a case 5 of the locking device A showing a locked state (when fixed), FIG. 2 is a view taken in the direction of the arrow X in FIG. 1, and FIG. 3 is a case of the locking device A showing an unlocked state (during attachment / detachment). 5, FIG. 4 is a view taken in the direction of the arrow Y in FIG. 3, FIG. 5 is a perspective view showing an attaching procedure of the locking device A, FIG. 6 is a perspective view illustrating an engagement relationship between the base plate and the case, and FIG. FIG. 8 and FIG. 9 are an exploded perspective view of a case and its assembled parts, and FIG. 8 and FIG. 9 are a front view and a main part side view of a table ball rental machine B to which a locking device A is fixed.
FIG. 10 is a view as viewed in the direction of arrow Z in FIG. 9.

[0011] Between the pachinko machines arranged in the pachinko amusement arcade, there is provided a narrow space ball rental machine B for renting out balls by inserting a prepaid card. As shown in FIG. 8, a card insertion slot 2 for inserting a prepaid card (see FIG. 8), an upper portion (see FIGS. 8 and 9) or a lower portion (see FIG. The front end 1 having a lock device attached to the display device (see FIGS. 5 and 6) and a display device (not shown) is assembled (see FIG. 10).

The locking device A of the present invention comprises a
Is most suitable for attachment to the front end 1, and the locking device A includes a base plate 4 mounted on the front end 1,
It is roughly divided into a case 5 fixed to the base plate 4 (see FIGS. 6 and 10). The base plate 4 is a front wall 4
A side wall 4b is bent at a right angle from both ends of "a", and an engagement piece 4c is provided at the tip of both side walls 4b so as to be bent back into a U-shape.

The front end portion 1 of the betting machine L is formed with a U-shaped frame in cross section (see FIG. 10). Since there is the gap S, the base plate 4 is formed in a shape that slidably holds the U-shaped front end 1 (FIGS. 6, 10).
reference). Therefore, the base plate 4 is connected to the lower end 1 of the front end 1.
a (see FIG. 9), and can be slid to an arbitrary height of the front end 1.

The front wall 4a of the base plate 4 is provided with a through hole 6 through which the keyhole 3 of the lock device at the front end 1 is exposed.
An upright wall 7 is formed on both sides of the through hole 6 so as to be cut and raised.
A screw hole 8 is provided in the upright wall 7. The guide piece 9 and the front wall 4 are fixed to the front wall 4a with legs 9a formed at both ends.
A plate insertion groove 11 is formed between the base plate 4 and the guide piece 9, and a projection insertion hole 11 is formed in the guide piece 9 so as to open into the plate restriction groove 10. The support piece 12 is formed with a screw insertion hole 13 (see FIG. 6).

The case 5 attached to the base plate 4 includes a front wall 5a, side walls 5b provided at both ends of the front wall 5a, an upper wall 5c provided at an upper end of the front wall 5a, and a lower end of the front wall 5a. Is formed in a flat box shape having an opening on the mounting surface side by the lower wall 5d provided on the bottom surface (FIGS. 1 and 7).
reference). A cylinder insertion hole 15 penetrates the bottom of the circular recess 14 provided on the front wall 5a.
A cylinder lock 16 serving as a primary lock is inserted. The reason for providing the lock on the primary side is to enable an existing lock device having a different code to be operated with one key K.

As the cylinder lock 16, a cylinder lock having a short overall length is used in order to reduce the thickness of the case 5. In the cylinder lock 16 of the short type, the number of tumbler pins arranged in the axial direction of the rotor 20 is reduced, but by increasing the number of tumbler pin rows in the circumferential direction of the rotor 20 (this embodiment). , Three columns) to prevent a decrease in the total number of key differences.

The front wall 5a is clamped by a flange 17 at the front end of the cylinder lock 16 and a nut 18 screwed to a male screw threaded on the outer peripheral surface of the cylinder lock 16, whereby the cylinder lock 16 is fastened. (See FIGS. 1 and 7). Cylinder lock 1
When the key 6 is inserted into a key hole 19 opened in the front wall 5a and rotated, the rotor 6 rotates with the rotor 20 having the rear end portion 20a formed in a non-circular shape. A step 21 is provided around the inner wall surface of the case 5 at a position close to the opening, and screw holes 22 are provided at four corners of the step 21.

The closing plate 23 mounted on the step portion 21 is provided with a hole 24 overlapping the screw hole 22, and a screw 25 inserted into the hole 24 is screwed into the screw hole 22 (see FIG. 7). When the closing plate 23 is attached to the base plate 4, bulging portions 26 and 27 projecting outward are formed at positions above and below the guide pieces 9, and the bulging portions 26 and 27 have the base plate 4. The plate insertion grooves 28 and 29 which are continuous with the plate restraining groove 10 are provided, a long hole 30 into which the upright wall 7 is inserted and a long groove 30 'into which the support side 12 is inserted, and the key hole 3 of the existing lock device is provided. An exposed hole 31 is provided (see FIG. 7).

The hole 3 provided near the center of the closing plate 23
2, the drive-side rotating body 33 is rotatably supported. The driving-side rotator 33 is provided with a non-circular rear end portion 20 a of the rotor 20.
Are provided (see FIG. 1) with which the
Is provided with a non-circular engaging projection 35 projecting from the projection insertion hole 11 (see FIG. 7).

A driven rotary member 37 is rotatably supported by a cylindrical portion 36 provided on the inner surface of the front wall 5a. The driven rotator 37 is disposed at a position substantially parallel to the mounting surface of the case 5 with respect to the driving rotator 33. In the first embodiment of the present invention, the driven rotator 33 and the driven This is a gear that meshes with the rotating body 37 (see FIG. 11). The gear of the driving-side rotating body 33 is formed over the outer circumference of 180 °, and the both ends 33a and 33b abut on the projection 16a protruding from the end face of the case of the cylinder lock 16, so that the rotation angle of the rotor 20 becomes approximately 90 °. It is regulated (see FIG. 7).

The driven-side rotating body 37 has a concave portion 38 opened on the front wall 5a side and a concave portion 39 provided on the opposite side of the concave portion 38.
(See FIG. 1), and an engagement groove 39a is provided in the recess 39 (see FIG. 7). Key member 40 inserted into recess 39
The key member 40 is not rotatable with respect to the driven-side rotator 37 because the engagement protrusion 40a that engages with the engagement groove 39a is provided. The tip of the key member 40 is inserted into and removed from the keyhole 3,
The key can be used to operate an existing lock device.

A spring 4 is provided between a washer 41 inserted into the concave portion 38 and a washer 42 inserted into the cylindrical portion 36.
3 is inserted (see FIGS. 1 and 7). Accordingly, the driven-side rotator 37 is urged in the direction in which the key member 40 is inserted into the keyhole 3, and is held in contact with the closing plate 23.

A recess 44 having a shallow bottom is provided in the lower wall 5d of the case 5 (see FIG. 3), and an insertion hole 45 is provided in the recess 44 at a position close to the opening of the case 5 (FIG. 3, FIG. 3). See FIG. 6). After the case 5 contacts the base plate 4, the tip of the hold plate 46 is inserted into the insertion hole 45 from outside the case 5.

The hold plate 46 is the plate insertion groove 28 of the closing plate 23 and the plate restraining groove 1 of the base plate 4.
When the hole 47 is inserted into the plate insertion groove 29 of the closing plate 23 via the
And an opening 48 communicating from the hole 47 to the tip of the hold plate 46 is provided (see FIG. 7). Opening 48
Has a width that allows the engagement protrusion 35 to pass when the engagement protrusion 35 that rotates together with the rotor 20 of the cylinder lock 16 reaches the unlocking angle, but does not allow the engagement protrusion 35 with the locking angle to pass. Is formed.

The hole 47 is formed with a locking surface 49 for engaging with the locking angle engaging projection 35, and a stopper 50 bent at the rear end of the hold plate 46 is provided with a screw insertion hole 51 for screw insertion. A screw 52 inserted into the hole 51 is screwed into a screw hole 53 provided at the bottom of the concave portion 44 of the case 5 (see FIGS. 5 and 7). When the driven side rotating body 37 is disposed below the driving side rotating body 33, the engaging projection 35 can be formed on the driven side rotating body 37 or the key member 40, and can be formed regardless of the arrangement due to space restrictions. can do.

On both side walls 5b of the case 5, holes 54 are provided which overlap the screw holes 8 of the base plate 4 when the case 5 contacts the base plate 4. A screw 55 screwed into the screw hole 8 can be inserted into the hole 54 (see FIG. 6).

Next, the locking device A configured as described above
The operation of (1) will be described in the order of attachment to the front end portion 1 of the tama ball rental machine B, locking and unlocking operations. As shown in FIG. 6, the case 5 before being attached to the betting machine B is assembled without the screw 55 and the hold plate 46, and the key K inserted into the cylinder lock 16 is locked and unlocked. The engagement projection 35 can be turned by about 90 degrees (at this time, the key member 40 is turned by about 90 degrees in the opposite direction).

Next, the lower end 1a of the front end portion 1 of the tama ball rental machine B
Then, the base plate 4 is slid along the front end 1 so that the key hole 3 of the existing lock device is exposed from the through hole 6 (see FIG. 6). Since the base plate 4 holds the front end portion 1 by elastic force, it can be stopped at an arbitrary position.

Next, since the key (key member 40) can be inserted and removed in the locked state of the key hole 3 of the existing lock device, the key member 40 is turned to the locking angle. When the case 5 contacts the base plate 4, the key member 40 projects from the base plate 4 to a position where the driven-side rotator 37 urged by the spring 43 presses against the base plate 4 (see FIG. 12).

When the protruding key member 40 is inserted into the keyhole 3 of the existing lock device, the lock member is inserted to a fully inserted position where the rotor of the existing lock device can rotate, stops, and the remaining extra insertion is performed. The driven-side rotator 37 retreats by the stroke amount while engaging with the drive-side rotator 33 against the spring 43 (the amount of retreat is indicated by reference numeral C in FIG. 13). The driven-side rotator 37 can be retracted until it comes into contact with the case 5 shown in FIG. 13, but in the mounted state, it is designed so that the retraction stops at almost the middle of the movement amount. Forty-three energizing forces work and do not rattle.

The insertion position of the base plate 4 is determined by the insertion of the key member 40, and the upright wall 7 and the support piece 12 are inserted into the long holes 30 and the long grooves 30 'of the closing plate 23 of the case 5, respectively. The hole 8 and the screw insertion hole 13 of the support piece 12 overlap with the hole 54 of the side wall 5b of the case 5 and the screw hole 53 of the lower wall 5d. The screw 55 inserted into the hole 54 is
And the case 5 is fastened to the base plate 4 (see FIG. 6).

Next, when the key K inserted into the keyhole 19 is rotated to the unlocking angle, the horizontal engaging projection 35 as shown in FIG. 6 becomes vertical (see FIGS. 3 and 4). ),
The engagement projection 35 can pass through the opening 48 of the hold plate 46. When the hold plate 46 is pushed into the case 5, the tip of the hold plate 46 is closed.
3, the case 5 is inserted into the plate restraining groove 10 of the base plate 4 and the plate insertion hole 29 of the closing plate 23, and the case 5 is engaged with the base plate 4. Therefore, the case 5 cannot be removed from the base plate 4 unless the hold plate 46 is removed.

When the hold plate 46 is inserted, the vertically engaging projection 35 enters the hole 47, and the stopper 50 of the hold plate 46 engages the recess 44 of the lower wall 5 d of the case 5.
(See FIG. 4). Stopper 5 with screw 52
When the key K inserted into the keyhole 19 is turned to the locking angle after the 0 is fastened to the concave portion 44, the engagement projection 35 turned counterclockwise from the vertical orientation turns sideways, It comes into contact with the locking surface 49 (see FIGS. 1 and 2), and the hold plate 46 cannot be removed.

Accordingly, if the key K is rotated to the locking angle and then removed from the keyhole 19, even if a malicious third party removes the screws 52 and 55 using a tool such as a screwdriver, the locking operation is performed. The device A cannot be removed from the front end 1 of the betting machine B. Cylinder lock 16 which is the primary lock
Is locked, the existing lock device is also in a locked state. When the key K is used to unlock the cylinder lock 16, the existing lock device is also unlocked.

The existing lock devices provided in each of the plurality of inter-ball lending machines B have various codes.
The retrofitting locking device A provided at a position covering each of the existing locking devices is such that by unifying the cylinder lock 16 as the primary side lock into the same code, the manager can use one key K for all pachinko machines. The front door can be locked and unlocked. The locking device A is irremovably fixed without damaging the tip of the betting machine B, and the thickness of the case 5 is small, so that it does not hinder the user.

FIGS. 14 and 15 are views showing a second embodiment of the present invention. Instead of the driving side rotating body 33 and the driven side rotating body 37 which mesh with each other, a pair of rotation transmitting links 56 or A drive-side rotator 33 'and a driven-side rotator 37' connected by one rotation transmission link 57 are used, but the other configuration is the same as that of the first embodiment. As shown in FIG. 14, the pair of rotation transmitting links 56 has both ends at the drive side rotating body 33 'and the driven side rotating body 3'.
7 ', and this pivot point corresponds to the pivot point of a general four-bar parallel link, and when the driving-side rotating body 33' rotates,
The driven rotator 37 'rotates in the same direction.

In the case shown in FIG. 15, both ends of one rotation transmitting link 57 are pivotally connected to the driving-side rotator 33 'and the driven-side rotator 37'. 1
This is the same as the embodiment. Since the rotation transmitting link 57 is different in the position of the pivot point between the rotating bodies 33 'and 37', the rotating direction is the opposite direction as shown by the arrow. The driven-side rotator may be rotated by a belt in addition to the rotation transmitting link.

In the above description, the case where the post-installation locking device A is installed in front of the existing locking device of the tama ball rental machine B installed between the pachinko machines has been described. In addition to the existing lock device, the present invention can be widely applied to the case where an existing lock device having a different code is locked and unlocked with one key K.

[0039]

Since the present invention is configured as described above, it has the following effects. (1) In the locking device of the present invention, a driving-side rotating body driven by a primary-side lock and a driven-side rotating body having a key member inserted into an existing locking device are arranged in parallel to a mounting surface of a case. Therefore, the thickness of the case is reduced. When a short-length lock is used as the primary lock, the thickness of the case becomes extremely small. Therefore, in the case where the locking device can be attached to the front of the tama ball lending machine, the pachinko patrons do not hinder the pachinko patrons and can easily monitor unauthorized operation of the game machine by a malicious third party. There is.

(2) In the locking device of the present invention, a base plate is slidably mounted on a member provided with an existing locking device,
Since the case attached to the base plate is provided with a key member that engages with the keyhole of the existing locking device, the locking device can be accurately and easily positioned and mounted. (3) The base plate is attached to a member provided with the existing locking device without making a flaw such as a screw. Therefore, unlike the related art, the problem of deteriorating aesthetic appearance and the problem of regulations that regulate processing flaws are solved. (4) The locking device of the present invention not only locks the existing locking device while the primary side lock is locked, but also makes it impossible to remove the hold plate. Even they are not removable.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a locking device of the present invention in a locked state.

FIG. 2 is a view taken in the direction of the arrow X in FIG. 1;

FIG. 3 is a longitudinal sectional view of the locking device before installation.

FIG. 4 is a view taken in the direction of the arrow Y in FIG. 3;

FIG. 5 is a perspective view of FIG. 3;

FIG. 6 is a perspective view showing an engagement relationship between a base plate and a case.

FIG. 7 is an exploded perspective view of components incorporated in a case.

FIG. 8 is a front view of a table ball lending machine to which a locking device is fixed.

FIG. 9 is a side view of a main part of FIG. 8;

10 is a view as viewed in the direction of the arrow Z in FIG. 9;

FIG. 11 is a view showing a driving rotator and a driven rotator of the first embodiment.

FIG. 12 is an essential part longitudinal cross-sectional view showing a protruding state of a key member of the locking device before installation.

FIG. 13 is a vertical cross-sectional view of a main part showing a protruding state of a key member of the locking device after attachment.

FIG. 14 is a view showing a driving rotator and a driven rotator according to a second embodiment, showing a case where a pair of rotation transmitting links is provided.

FIG. 15 is a view showing a driving rotator and a driven rotator according to a second embodiment, showing a case where there is one rotation transmitting link;

[Description of References] A Locking device B Lending machine between tables B 'Main body K Key 1 Front end 3 Keyhole 4 Base plate 5 Case 6 Through hole 10 Plate restraining groove 15 Cylinder insertion hole 16 Cylinder lock (primary lock) 19 Key hole 20 Rotor 20a Non-circular rear end 23 Closure plate 28, 29 Plate insertion hole 33, 33 'Drive side rotating body 35 Engagement protrusion 37, 37' Driven side rotating body 40 Key member 43 Spring 46 Hold plate 48 Opening 49 Locking surface 56,57 Rotation transmission link

Claims (7)

[Claims] 1. A case attached to a position provided on a wall surface to cover an existing lock device, and a primary lock having a key code different from that of the existing lock device with a keyhole exposed on the surface of the case. A drive-side rotator that is rotated by a key operation of the primary lock, and is disposed in a direction substantially parallel to the mounting surface with respect to the drive-side rotator, and is rotated by the rotation of the drive-side rotator. A locking device comprising: a driven-side rotating body to be driven; and a key member attached to the driven-side rotating body and inserted into a key hole of the existing locking device. 2. The existing lock device is provided on a wall surface of a front end portion fixed to a main body, and the case has a through hole through which a keyhole of the existing lock device is exposed. The locking device according to claim 1, wherein the locking device is fixed to a base plate that is slidably mounted. 3. An engaging projection is provided on one of the driving rotator and the driven rotator.
A plate restraining groove formed substantially parallel to the surface of the base plate is provided, a plate insertion groove continuous with the plate restraining groove is provided in the case, and a hold plate that can be inserted into the plate restraining groove and the plate inserting groove is provided. An opening through which the engaging protrusion can pass at an unlocking angle of the primary side lock, and a hole communicating with the opening and allowing the engaging protrusion to rotate, are provided with the engaging protrusion having a locking angle in the hole. The locking device according to claim 1, wherein a locking surface to be engaged is provided. 4. The locking device according to claim 3, wherein the engagement projection is inserted from the plate restraining groove into a projection insertion hole opened on a surface of the base plate. 5. The locking device according to claim 1, wherein the key member is urged in a direction of engaging with a key hole of the existing locking device. 6. The locking device according to claim 1, wherein the driving-side rotating body and the driven-side rotating body are gears that mesh with each other. 7. The locking device according to claim 1, wherein the driving side rotating body and the driven side rotating body are connected by a rotation transmitting link.