JP3438309B2 - Vending machine door lock mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock mechanism of a vending machine for locking a main door to a vending machine main body. 2. Description of the Related Art Conventionally, as this kind of door lock mechanism,
For example, the one described in Japanese Utility Model Laid-Open No. 64-7384 is known. This door lock mechanism locks and unlocks a lock fitting slidably provided vertically on the main door with respect to a lock fitting fixed to the vending machine main body, and locks and unlocks the main door. I can do it. The lock bracket is fixed to the cylinder of the cylinder lock fixed to the main door via a rotation link, and the lock bracket is slid up and down by rotating the rotation link by key operation of the cylinder lock. Let
Locking and unlocking are performed. In such a door lock mechanism, the rotation of the cylinder of the cylinder lock is transmitted to the lock fitting via a rotation link, and the lock fitting is slid in the vertical direction. Due to the structure, the structure becomes complicated, and the rotational motion is converted into a linear motion, so that the friction increases and the key operation of the cylinder lock becomes heavy. In order to solve such a problem, it is conceivable to directly screw the lock fitting to the cylinder of the cylinder lock and rotate the lock fitting by key operation to lock the lock fitting on the lock receiving fitting.
However, with this configuration, in the case of theft, the force for prying open the main door acts on the cylinder of the cylinder lock via the lock fitting, and the cylinder may be chipped and dropped. In particular, it is assumed that the screw portion of the cylinder has a smaller diameter than the screw portion of the lock body, and the material is also brittle (made of die-casting), and it is relatively easy to chip off. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and can reduce the key operation of a cylinder lock, as well as the vending machine main body, a door, and the like. It is an object of the present invention to provide a door lock mechanism of a vending machine that can increase the lock strength of a vending machine. [0006] In order to achieve the above object, the present invention provides a lock fitting fixed to one of a vending machine main body and a door and a lock fitting fixed to the other by a cylinder lock. In a door lock mechanism of a vending machine that locks a door to a vending machine main body, a lock member includes an operating member that rotates about an axis extending in a door opening direction by a cylinder of a cylinder lock. A lock member that is coaxially rotated with the operation member by the operation member and locked to the lock receiving fitting, and the lock member is attached to the door.
The operation member is rotatably and axially immovably attached to the lock body of the attached cylinder lock , and the operation member is engaged with the lock member only in the rotation direction. According to the door lock mechanism of the first aspect, when the cylinder is rotated by the key operation of the cylinder lock, the operation member rotates, and the lock member rotates accordingly. Then, the lock member is locked to the lock receiving fitting. In this case, the rotational force of the key operation is transmitted to the lock member as a rotational force without being converted into a linear motion on the way, so that the force can be transmitted efficiently and the friction of each part can be reduced. . Further, since the lock member rotates coaxially with the operation member that rotates about an axis extending in the door opening direction, and the operation member is engaged with the lock member only in the rotation direction, The force for opening the door does not act on the operation member, but acts only between the lock receiving member and the lock member. For this reason, the force for prying open the door acting on the lock fitting is controlled by the lock member via the lock member .
Acts on the lock body and does not act on the cylinder of the cylinder lock. Then, the lock member is attached to the door.
Pivotable and axially immovable on the locked cylinder lock body
By attaching to the door, there is no need to specially provide an attachment member for fixing the lock member to the door, and
The force for prying the door acting on the lock fitting is applied to the lock body of the strong cylinder lock. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A door lock mechanism for a vending machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view showing the entire configuration of the door lock mechanism, and FIG. 2 is a side view thereof. As shown in both figures, the door lock mechanism 1 includes a lock fitting 2 attached to a vending machine main body A of a vending machine and a lock fitting 3 attached to a main door B of the vending machine. The lock fitting 3 is screwed to a cylinder lock 4 attached to the front panel Ba of the main door B at the upper and lower intermediate portions (see FIG. 3), and the lock fitting 3 is locked by the key of the cylinder lock 4 to the lock receiving fitting 2. The operation is performed between a locked state where the lock is released and an unlocked state where the lock is released. The lock fitting 2 is composed of a main fitting 5 attached to the middle of the vending machine body A in the vertical direction, an upper fitting 6 attached to the upper end, and a lower fitting 7 attached to the lower end. The upper metal fitting 6 and the lower metal fitting 7 are formed in exactly the same shape. The main receiving member 5 is formed with an "L" -shaped engaging hole 5a for engaging a member on the locking member 3 side. Similarly, the upper receiving member 6 and the lower receiving member 7 have round holes 6a, 7a are formed respectively. The main support 5, upper support 6, and lower support 7 are firmly fixed to a frame (not shown) of the vending machine main body A, respectively. The lock fitting 3 includes a main fitting 8 corresponding to the main receiving fitting 5 of the lock receiving fitting 2, an upper locking rod 9 corresponding to the upper receiving fitting 6, and a lower locking rod corresponding to the lower receiving fitting 7. 10 is constituted. The upper locking rod 9 and the lower locking rod 10 are guided by an upper guide member 11 and a lower guide member 12 provided on the main door B, respectively.
It moves up and down and is locked by inserting its leading ends into the round holes 6a and 7a of the upper receiving fitting 6 and the lower receiving fitting 7, respectively. The bases of the upper locking rod 9 and the lower locking rod 10 are attached to the front surface of a locking disk 23 of
The upper locking rod 9 and the lower locking rod 10 are simultaneously moved forward and backward by the rotation of the locking disk 23, respectively, while being rotatably mounted in a state of being symmetrically located at 80 degrees. . As shown in FIGS. 3 and 4, the main fitting 8 includes a tab (operation member) 21 attached to a screw portion of the cylinder 4 b of the cylinder lock 4 and a screw portion of the lock body 4 a of the cylinder lock 4. Rotating member (locking member) attached to
22 and a locking disk (locking member) 23 attached to the tip of the rotating member 22, both of which are rotated around the axis of the cylinder lock 4 extending in the opening direction of the main door B. You. The locking disk 23 has a locking projection 23b on the periphery of the disk main body 23a, and has two small screws 2
4 and 24, the mounting piece 22a at the tip of the rotating member 22
, And rotates together with the rotating member 22. With the rotation of the locking disk 23, the locking projections 23b enter the locking holes 5a of the main receiving fitting 5 and are locked by the locking holes 5a, while the upper locking is rotatably attached to the disk body 23a. The rod 9 and the lower locking rod 10 are moved forward and backward (see FIGS. 1 and 2). The pivoting member 22 is formed by bending a steel plate into a U-shape, and a bush 2 is formed in a circular opening 25 formed in the base.
6 with the large nut 2 inserted into the threaded portion of the lock body 4a.
7. In this case, the rotating member 22
The bush 26 is attached to the lock main body 4a in a locked state and rotatably. On the other hand, the tab 21 is formed of a rectangular plate piece whose two pieces are cut out according to the width of the rotating member 22, and the two notches 21a, 21a are formed.
And is fixed to the threaded portion of the cylinder 4b by the small nut 28 in this state. That is, the tab 21 is fixedly attached to the cylinder 4b, and is engaged with the rotating member 22 in the notch portions 21a, 21a in the rotating direction. Therefore, when the cylinder 4b rotates and the tab 21 rotates, the rotating member 22 and the locking disk 23 rotate accordingly. As shown in FIG. 3, the tab 21 and the rotating member 22 are slightly engaged with play, and the rotating member 22 is deformed by a force for prying the main door B open. This force is applied to the tab 21 and cylinder 4
b does not act on the threaded portion. Here, the locking (locking) and unlocking (unlocking) operations of the door lock mechanism 1 of this embodiment will be briefly described. When the main door B is closed with respect to the vending machine main body A and the key operation of the cylinder lock 4 is performed, the locking disk 23 is moved through the cylinder 4 b, the tab 21 and the rotating member 22 of the cylinder lock 4. Rotate in the direction. Locking disk 2
When 3 rotates (counterclockwise rotation in FIG. 1),
At the same time when the locking projections 23b enter the locking holes 5a of the main receiving metal fitting 5, the upper locking rod 9 and the lower locking rod 10 advance, and their respective tips are moved to the upper receiving metal fitting 6.
The main door B is locked to the vending machine main body A by entering the round holes 6a and 7a of the lower receiving metal fitting 7. Conversely, when the key is operated in reverse from the locked state, the locking disk 23 rotates in the opposite direction (clockwise rotation in FIG. 1), and when the locking protrusion 23b comes off the main receiving fitting 5. At the same time, the upper locking rod 9 and the lower locking rod 10
The main door B is released from the lower bracket 6 and the lower bracket 7, respectively, and the lock of the main door B is released. On the other hand, when the main door B is forcibly opened in the locked state, a shearing force acts on the upper locking rod 9 and the lower locking rod 10, and a tensile force is applied to the main fitting 8. Works. This pulling force causes the rotating member 22 to be pulled out of the cylinder lock 4 (in the axial direction).
The rotation member 22 functions as the lock body 4 of the cylinder lock 4.
Since it is attached to the threaded portion a, it can sufficiently withstand the tensile force. Further, since this pulling force acts in the axial direction, it does not act on the tab 21 that is free in the axial direction with respect to the rotating member 22. As described above, the door lock mechanism 1 according to the present embodiment.
According to this, the turning force based on the key operation acts on the turning member 22 from the tab 21, but the pulling force due to the opening of the main door B does not act on the tab 21 from the turning member 22. The tensile force does not act on the cylinder 4b of the cylinder lock 4 via the tab 21, and the lock of the main door B with respect to the vending machine main body A can be strengthened. Therefore, the vending machine can have a good antitheft structure. Further, the main fitting 8 operated by the cylinder lock 4, that is, the tab 21, the rotating member 22, and the locking disk 23 are all rotated around the axis of the cylinder lock 4, and the rotation of the key remains unchanged. Because of the transmission structure, the structure is simplified, the friction of each part can be reduced, and the key operation can be lightened. In this embodiment, the rotating member is attached to the cylinder lock. However, as long as the rotating member is located coaxially with the cylinder lock and is provided so as to be rotatable, a chassis such as a main door is separately provided. You may make it attach to. Alternatively, the lock fitting and the cylinder lock may be attached to the vending machine main body, and the lock receiving fitting may be attached to the main door. As described above, according to the door lock mechanism of the present invention, the door can be locked and unlocked only by the turning operation, so that the key operation of the cylinder lock can be lightened. . In addition, since the force for opening the door does not directly act on the cylinder of the cylinder lock, the lock strength between the vending machine main body and the door can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing the structure of a door lock mechanism according to an embodiment of the present invention. FIG. 2 is a side view showing the structure of the door lock mechanism of the embodiment. FIG. 3 is a cut side view around a main fitting. FIG. 4 is an exploded perspective view around a main fitting. [Description of Signs] 1 Door lock mechanism 2 Lock receiving fitting 3 Lock fitting 4 Cylinder lock 4a Lock body 4b Cylinder 5 Main receiving fitting 8 Main fitting 21 Tag 22 Rotating disk 23 Locking disk A Vending machine main body B Main door

Claims (1)

(57) [Claims] [Claim 1] A lock which is fixed to one of a vending machine main body and a door is locked to a lock receiving metal fixed to the other by a cylinder lock. In the vending machine door lock mechanism for locking the vending machine body to the vending machine main body, the lock member is rotated by a cylinder of the cylinder lock around an axis extending in the opening direction of the door; A lock member that rotates coaxially with the operation member and is locked to the lock receiving member by the member, wherein the lock member is attached to the door.
The vending machine according to claim 1, wherein the operating member is rotatably and axially immovably attached to the lock body of the cylinder lock , and the operating member is engaged with the lock member only in the rotating direction. Door lock mechanism of the machine.