JP5056686B2 - Vending machine door lock device - Google Patents

Description

  The present invention relates to a door lock device with a cylinder lock that locks an outer door of a vending machine in a closed position.

In recent vending machines, in order to ensure high anti-theft, apart from the handle lock, a door lock that double-locks the door by adding a cam lock that combines a cylinder lock with a locking cam as an auxiliary lock. Many locking devices are employed (see, for example, Patent Document 1).
Next, the conventional structure of the auxiliary lock (cam lock with cylinder lock) equipped in the vending machine is shown in FIGS. 4 and 5 are perspective views showing the disassembled and assembled state of the cam lock, respectively, and FIG. 6 is a cam lock mounting arrangement view as viewed from the inside of the vending machine.

  First, in FIG. 6, 1 is a vending machine cabinet, 2 is an outer door, 3 is an assembly of a cam lock (auxiliary lock) with a cylinder lock attached to the outer door, and the cam lock with the outer door 2 closed is shown. When the cylinder lock 3 is locked, a latch (slider) laid on the outer door 2 engages with a hook-shaped catch provided at the opening end of the cabinet 1 to lock the outer door 2 in the closed position. When the key is inserted into the cylinder lock from this door lock state and unlocked, the locking cam coupled to the rear end of the cylinder lock rotates to move the latch to the release position, thereby manually opening the outer door 2. (See Patent Document 1).

  Next, a conventional assembly structure of the cam lock 3 is shown in FIGS. In each figure, 4 is a cylinder lock, 5 is a mounting frame provided on the back surface of the outer door, 6 is a washer, and 7 is a male screw formed on the outer surface of the outer cylinder 4a of the cylinder lock 4 to be screwed into the cylinder lock. A hexagon nut (nominal diameter of the screw: M19) for fastening the main body to the mounting frame 5, 8 is a locking cam 8 fitted into a screw shaft 4b protruding backward from the inner cylinder (cylinder) of the cylinder lock 4 is attached to the screw shaft 4b Hexagon nuts (screw nominal diameter: M7) for fastening the locking cam 8 by screwing, 10 is a return spring (torsion coil spring) of the locking cam 8, and 11 is connected between the locking cam 8 and the latch. It is a rope to do.

  The cylinder lock 4 is a product conforming to the standard (JVMA1001) established by the Japan Vending Machine Industry Association so that it can be commonly attached to any vending machine, and is represented by FIGS. 7 (a) to (d). Thus, the cross-sectional shape of the outer cylinder 4a of the cylinder lock 4 and the screw shaft 4b protruding rearward from the rear end of the inner cylinder is an oval shape in which the left and right side portions are cut into a half-moon shape. The outer diameter φ1 of the portion 4c and its length L1, the screw diameter φ2, the cross-sectional width D1, and the length L2 of the outer cylinder 4a, and the cross-sectional width D2 of the screw shaft 4b are defined by the dimensions determined by the standards. Further, the key rotation angle of the cylinder lock is normally 90 degrees to the right, and the key cannot be removed at this unlocked position.

In order to mount the cam lock 3 on the outer door 2 (see FIG. 6) of the vending machine, first, the mounting frame 5 is screwed to the rear surface of the outer door 2 and then the door plate, The cylinder lock 4 is inserted into the lock mounting hole 5a formed in the mounting frame 5 (a hole having an oval shape corresponding to the cross-sectional shape of the outer cylinder 4a of the cylinder lock 4), and the cylinder lock 4 is inserted from the rear side of the outer door. The hex nut 7 (M19) screwed into the outer cylinder 4a is firmly tightened using a tool such as a spanner or a universal wrench. Next, the return spring 10 and the locking cam 8 (a hole having an oval shape corresponding to the cross-sectional shape of the screw shaft 4b is opened at the base of the locking cam) are inserted from the rear end side of the cylinder lock 4. In the same manner as described above, the locking cam 8 is firmly tightened by tightening the hexagonal nut 9 (M7) screwed onto the screw shaft 4b of the cylinder lock 4 using a tool such as a spanner or an adjustable wrench, and further prevents the nut from loosening. Apply an adhesive to secure it. Thereafter, the rope 11 is laid between the front end of the locking cam 8 and the latch to complete the assembly of the door lock device.
JP 2001-6038 A (FIGS. 4 and 5)

The cam lock 3 is mounted on the outer door 2 in the vending machine assembly process, and the vending machine product is shipped to the user. In this case, the cylinder lock 4 to be assembled to the cam lock 3 is a standard grade product in terms of the anti-theft function.
On the other hand, users who have purchased vending machines can use high-grade cylinder locks that are highly safe against picking, lock destruction attacks, etc. depending on the conditions of the vending machine installation location (indoor installation and outdoor installation). There are many cases where a vending machine industry association standard (JVMA1001) compatible product) is purchased from the market and used by replacing it with an existing cylinder lock (standard product). In this case, the replacement operation of the cylinder lock is performed at the site where the vending machine is installed.

  By the way, in the conventional vending machine as described above, in order to fasten the cylinder lock 4 assembled to the cam lock 3 and the locking cam 8 coupled to the cylinder lock 4, two types (M19, M7) hex nuts 7 and 9 are used for fastening. For this purpose, a special tool such as an adjustable wrench is required to remove the existing cylinder lock and replace it with a newly purchased cylinder lock. Since this work takes time, it is difficult for the user to perform the replacement work. Further, if the tightening of the hexagon nuts 7 and 9 is insufficient, the hexagon nut is loosened with the repetition of the subsequent locking and unlocking operations, and in the worst case, the cylinder lock 4 and the locking cam 8 may fall off. .

  Therefore, according to the present invention, it is not necessary to tighten the hexagon nut firmly with a special tool such as an adjustable wrench, and when replacing the existing cylinder lock with another cylinder lock prepared by the user, a normal screwdriver is used. The purpose is to provide a door lock device for a vending machine with an improved assembly structure so that the cylinder lock can be replaced by a simple operation using only a screwdriver.

In order to achieve the above object, according to the present invention, an outer cylinder of a cylinder lock (compatible with Japan Vending Machine Industry Association Standard (JVMA1001)) inserted from the front side of the door is disposed on the back surface of the door plate. The door of the vending machine having an assembly structure in which the locking cam fixedly supported on the mounting frame and fixed to the screw shaft protruding backward from the inner cylinder of the cylinder lock is retained by the hexagon nut screwed to the screw shaft. In the locking device,
The mounting frame is fitted to the outer cylinder of the cylinder lock to hold the cylinder lock in the assembly position, and the hexagon nut is engaged from the rear side of the cylinder lock, and then the screw is attached to the mounting frame. The nut fixing metal to be fixed is assembled so that the main body of the cylinder lock and the locking cam are supported at the assembly position (Claim 1), and the retaining spacer and the nut fixing metal are specifically configured as follows. It shall be.
(1) The retaining spacer is a U-shaped frame that is fitted to the outer cylinder of the cylinder lock, and the cylinder lock is locked and held at a predetermined assembly position via a push screw installed in the U-shaped frame. (Claim 2).
(2) After opening a nut locking hole having a groove width corresponding to the flat diameter of the hexagon nut on the plate surface of the nut fixing metal, and fitting and fixing the hexagon nut to the locking hole, The nut fixing metal is fixed to the lock mounting frame with screws (Claim 3).

With the above configuration, when the vending machine product is shipped, when the cylinder lock of the door lock device is replaced with another cylinder lock (compliant with Japan Vending Machine Industry Association Standard (JVMA1001)), a special wrench or other special The cylinder lock can be easily replaced with a screwdriver without using a tool.
That is, when assembling the door lock device, the cylinder lock inserted into the lock mounting hole of the mounting frame from the front side of the door and pushed in is prevented from slipping between the mounting frame and the locking cam attached to the rear end of the cylinder lock. By inserting the spacer for use into the outer cylinder of the cylinder lock, the cylinder lock can be prevented from coming off at a predetermined assembly position without using a hex nut. Further, by locking the outer cylinder of the cylinder lock via the push screw at a position where the spacer is abutted against the plate surface of the lock mounting frame, it is possible to reliably prevent backlash in the front-rear direction of the cylinder lock.

  Also, a hexagon nut is screwed onto the screw shaft so that the locking cam inserted into the screw shaft protruding at the rear end of the cylinder lock does not come off (the hexagon nut is not tightened firmly, but is lightly tightened in a temporarily fixed state). After that, the nut lock that is fitted and engaged with the hexagon nut from the back side of the cylinder lock is screwed to the mounting frame and fixed, so that the cylinder lock can be locked and unlocked repeatedly. The screw shaft and the locking cam rotate relatively (the rotation angle of locking / unlocking is 90 degrees) while the hexagon nut is fixed at the initial tightening position. As a result, the locking and unlocking operations of the cylinder lock can be repeated without the possibility that the hexagon nut loosens from the initial tightened state or falls off the screw shaft.

  On the other hand, when removing the existing cylinder lock when replacing the cylinder lock, the screw (screwdriver) is used to fix the screw fixing the nut fixing metal to the mounting frame and the presser screw screwed on the retaining spacer. The cylinder lock body can be easily removed from the front side of the door simply by loosening the nut and removing the nut fixing bracket from the assembly frame and then manually removing the hexagon nut from the screw shaft. As a result, even a user who is not accustomed to working with tools can change the cylinder lock easily and in a short time without using a special tool such as a wrench or adjustable wrench.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. 1 is an exploded perspective view of a cam lock with a cylinder lock according to an embodiment of the present invention, FIGS. 2 (a) and 2 (b) are a rear view and a front view showing an assembled state of the cam lock, and FIG. It is the attachment arrangement | positioning figure of the door locking device seen from the warehouse inner side, the same code | symbol is attached | subjected to the same member as FIGS. 4-6, and the description is abbreviate | omitted.

  First, in FIG. 1, a cam lock 3 (auxiliary lock of a vending machine) according to the present invention includes a cylinder lock 4 (compatible with Japan Vending Machine Industry Association Standard (JVMA1001)), a mounting frame 5, a locking cam 8, and the like. , A hexagon nut (M7) 9, and a cylinder lock body retaining spacer 12 and a nut fixing metal 13 which are newly added to the mounting frame 5 according to the present invention.

Here, the mounting frame 5 has a box-shaped sheet metal in which a lock mounting hole 5a corresponding to the cross-sectional shape of the outer cylinder 4a of the cylinder lock 4 is opened at the center of the front wall as shown in the figure, and mounting flanges are formed on the left and right. The nut fixing metal 13 is screwed through a screw 14 into a hole 5c drilled in the upper and lower wall portions 5b.
The retaining spacer 12 is a U-shaped steel plate formed in accordance with the cross-sectional shape of the outer cylinder 4a of the cylinder lock 4, and a presser screw 12a for locking and holding the cylinder lock is screwed on the side wall. Yes.

  On the other hand, as shown in the drawing, the nut fixing metal 13 is provided with a nut locking hole (long hole) 13a having a groove width corresponding to the flat diameter d of the hexagonal nut (M7) 9 on the rear end surface. A screw hole 13c for screwing the screw 14 is formed in the flange 13b formed so as to protrude forward. In addition, an oblong shaft hole 8a corresponding to the cross-sectional shape of the screw shaft 4b protruding rearward from the inner cylinder of the cylinder lock 4 is opened at the rotation center of the locking cam 8, and an operation pin 8b is planted at the tip of the cam. It is installed.

  Next, an assembly procedure for mounting the cam lock 3 having the above configuration on the outer door 2 (see FIG. 3) of the vending machine will be described. First, the mounting frame 5 is screwed to the back surface of the outer door 2, and then the cylinder lock 4 is inserted into the lock mounting hole 5 a from the front side of the outer door, and the front end flange portion 4 c is placed on the door plate surface of the outer door 2. Push it all the way in close contact. Next, a retaining spacer 12 is fitted to the outer cylinder 4a of the cylinder lock 4 from the back side of the outer door, and the presser screw 12a is tightened while the spacer 12 is pressed against the plate surface of the mounting frame 5 to lock the cylinder lock. 4 is locked and fixed at a predetermined assembly position without rattling. Subsequently, the locking cam 8 is fitted and inserted into the screw shaft 4b protruding rearward from the inner cylinder of the cylinder lock 4, and the hexagon nut (M7) 9 is lightly screwed to press the locking cam 8 from behind.

Next, after fitting the nut locking hole 13a of the nut fixing metal 13 to the hexagon nut 9 from the back side of the cylinder lock 4, the flange 13b of the nut fixing metal 13 is inserted into the assembly frame 5, and the screw is fixed at this position. 14 is screwed to fix the nut fixing metal 13 to the assembly frame 5, and the assembly of the cam lock 3 is completed.
FIG. 3 shows a state in which the assembly of the cam lock 3 is mounted on the outer door of the vending machine (cylinder lock: locking), and the operation pin 8b of the locking cam 8 coupled to the cylinder lock 4 is a door lock latch (slider). ) Is engaged with the slot 15a of the operation piece 15 connected to the head.

  With the above configuration, when a key is inserted into the cylinder lock 4 from the front of the vending machine and unlocked (rotated 90 degrees clockwise), the hex nut 9 remains locked to the nut fixing metal 13 and is locked. The locking cam 8 coupled to the inner cylinder (cylinder) and the screw shaft 4b rotates, and the operation pin 8b pushes the operation piece 15 upward to release the door lock of the vending machine. As a result, the outer door 2 can be opened. Further, when the cylinder lock 4 is turned to the locking position with the outer door 2 closed, the locking cam 8 returns to the locking position in conjunction with this, and the outer door 2 is locked.

  On the other hand, when a vending machine user replaces the existing cylinder lock built into the door lock device with another cylinder lock with a high anti-theft property, the door door is opened with the outer door 2 open. From the back side, use a screwdriver to loosen the holding screw 12a and screw 14 (see FIG. 1), and remove the nut lock 13 and the cylinder lock 4 that have been engaged with the hexagon nut 9 until now. The retaining spacer 12 fitted to the tube 4 a is removed from the assembly frame 5. Subsequently, the hexagon nut 9 which is screwed into the screw shaft 4b of the cylinder lock 4 from the back and lightly tightened is manually loosened, and the locking cam 8 is removed. Thereby, the cylinder lock 4 can be freely extracted from the front side of the outer door 2. Thereafter, the cylinder lock to be newly attached is mounted according to the assembly procedure described above, and the cam lock 3 is assembled.

  As can be seen from the above replacement procedure, when the user of the vending machine replaces the existing cylinder lock 4 with another cylinder lock, a flexible wrench as in the conventional structure (see FIGS. 4 to 6). No need for the troublesome work of loosening or tightening the hex nut 7 (M19) and hex nut 9 (M7) using a special tool such as The cylinder lock 4 can be replaced with a simple operation that can be operated, and serviceability for the user can be improved.

The screw operation of the hexagon nut 9 is performed manually, and the nut fixing hole 13 is turned over so that the nut locking hole 13a is fitted to the hexagon nut 9, and the nut fixing hole 13 is turned like a wrench. Thus, the hexagon nut 9 can be screwed into the screw shaft 4b or loosened.
If the user of the vending machine that replaces the cylinder lock of the cam lock desires, after removing the existing cylinder lock according to the above procedure, without using the retaining spacer 12 and the nut fixing metal 13 described above, As with the conventional cam lock (see FIG. 4), using a wrench, the M19 hex nut screwed into the outer cylinder 4a of the cylinder lock 4 is firmly tightened so that the cylinder lock body is directly fastened to the mounting frame 5 and then locked. As for the fixing of the cam 8, it is also possible to fasten the locking cam by firmly tightening the hexagon nut of M7 using a wrench in the same manner as described above.

1 is an exploded perspective view of a cam lock assembly according to an embodiment of the present invention. It is an external view showing the assembly state of the cam lock of FIG. 1, (a), (b) are a rear view and a front view, respectively. The installation layout seen from the inside of the cabinet representing the state where the cam lock of Fig. 2 is mounted on the outer door of the vending machine An exploded perspective view of a conventional cam lock assembly FIG. 4 is an external perspective view of the assembled state of FIG. Installation layout view from inside of the cabinet showing the state where the cam lock of FIG. 5 is mounted on the outer door of the vending machine It is a block diagram of a cylinder lock conforming to the Japan Vending Machine Industry Association standard (JVMA1001), (a) ~ (d) is a front view, a side view, a rear view, and a cross-sectional shape diagram of the outer cylinder, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vending machine cabinet 2 Vending machine outer door 3 Cam lock 4 Cylinder lock 4a Outer cylinder 4b Screw shaft 5 Assembly frame 8 Locking cam 8a Shaft hole 8b Operation pin 9 Hexagon nut (M7)
12 Stopper spacer 12a Presser screw 13 Nut fixing metal 13a Nut locking hole 13b Flange 14 Screw

Claims (3)

It is a door lock device of a vending machine that combines a cylinder lock with a locking cam and locks the door in the closed position in conjunction with the locking of the cylinder lock, and the outer cylinder of the cylinder lock inserted from the front side of the door is the door plate In an assembly structure in which a locking cam fixed to and supported by a mounting frame disposed on the back surface of the cylinder lock and supported by a hexagon nut screwed into the screw shaft is inserted into a screw shaft protruding backward from the inner cylinder of the cylinder lock. ,
A spacer for retaining the cylinder lock in the assembly position by fitting to the outer cylinder of the cylinder lock on the mounting frame, and a screw fixing to the mounting frame after engaging the hexagon nut from the back side of the cylinder lock A door lock device for a vending machine, which is configured by assembling a nut fixing metal to be attached.   2. The door lock device according to claim 1, wherein the retaining spacer is a U-shaped frame that is fitted to an outer cylinder of the cylinder lock, and the cylinder lock is assembled to a predetermined assembly via a push screw that is implanted in the U-shaped frame. A door lock device for a vending machine characterized by being held and held in position.   The door lock device according to claim 1, wherein a nut locking hole having a groove width corresponding to the flat diameter of the hexagon nut is opened on the plate surface of the nut fixing metal, and the hexagon nut is fitted into the locking hole. A door lock device for a vending machine, wherein the nut fixing metal is screwed to the lock mounting frame after being locked and fixed.

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