JPH0240696Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a locking device for a door of a vending machine, etc.

Structure of the conventional example and its problems FIGS. 1 to 3 show a locking device for a door of a vending machine. The configuration of this conventional example will be explained below with reference to FIGS. 1 to 3.

In the figure, 1 is a main body of a vending machine, and a door 2 is provided on the front side of the main body. The door 2 is provided with a product display room 3 on the left side in three levels, upper and lower, and a coin insertion slot 4 and a coin return slot 5 are formed in the center. Further, a product selection switch 6 is provided between the product display rooms 3, and two product outlet ports 7 are provided on the left and right in the lower part. Reference numeral 8 denotes a handle provided on the opposite side of the door 2, which is supported vertically on the main body 1 by a hinge 9. This handle 8 has a locking hole 10 formed at its bottom, and its upper end is pivotally supported on the door 2 by a shaft 11. Reference numeral 12 denotes a key portion, on which a rotating plate 14 that is rotated by a key 13 is attached. Reference numeral 15 denotes a locking piece, which includes a locking stopper 16 that retracts from the locking hole 10 of the handle 8, and a substantially L-shaped locking plate 1 connected to the locking stopper 16.
7. The locking stopper 16 is attached by passing through a guide piece 19 provided with a guide hole 18 attached to the back surface of the door 2. In addition, the locking plate 1
7 forms a longitudinal groove 20 and is attached by a screw 21 so as to be slidable up and down. In addition, the locking plate 17
An engagement hole 17' extending perpendicularly to the moving direction of the locking piece 15 is formed in the engagement hole 17', into which an engagement pin 14' protruding from the rotating plate 14 is inserted. Reference numeral 22 denotes an engaging piece that is attached to the opposite side of the door 2 of the main body 1 with a screw 21, and is formed in a substantially L-shape. 23 is a locking piece, which includes a rod 24 extending in the vertical direction, and a locking piece 24 that extends vertically.
4 and a locking plate 26 provided with an inverted U-shaped groove 25. When the engaging piece 22 is positioned within the groove 25 of the locking plate 26, the door 2 is moved forward (second
(to the left in the figure). A vertically elongated hole 27 is formed in the rod 24, and the rod 24 is attached to the door 2 with a screw 21 so as to be vertically slidable.

28 is a connecting rod, which is composed of a first connecting rod 29 and a second connecting rod 30. This first connecting rod 29 and the second
One end of the connecting rod 30 is pivotally supported, and the other end of the first connecting rod 29 is rotatably attached to the rod 24.

Further, the other end of the second connecting rod 30 is rotatably attached to the handle 8.

Further, the first connecting rod 29 is rotatably attached to the door 2 with a shaft 31. Reference numeral 32 denotes a spring that causes the handle 8 to project forward of the door 2 (indicated by the two-dot chain line in FIG. 2) when the engagement between the locking hole 10 and the locking stopper 16 is released.

Next, the operation will be explained.

The state in which the door 2 covers and locks the main body 1 is shown by the solid line in FIG. I can't open door 2 because I can't. Then, the locking piece 2 is attached to the engaging piece 22.
Even if the groove 25 of No. 3 is inserted and an attempt is made to open the door 2, it will not open.

When opening the door 2, when the key 13 is inserted into the key part 12 and rotated, the rotating plate 14 is rotated. This rotation causes the engagement pin 14' to rotate, but the engagement plate 17 moves downward through the engagement hole 17', and the engagement stopper 16 descends from the engagement hole 10 and comes out of the hole. As a result, the spring 32 causes the handle 8 to pop out in front of the door 2. Next, hold this handle 8 and lift it upwards toward you to release the connecting rod 28.
As a result, the lock piece 23 is moved upward. As a result, the groove 25 of the locking piece 23 moves further than the engaging piece 22, and is removed from the engaging piece 22. Next, when the handle 8 is pulled forward (to the left in FIG. 2), the door 2 opens from the main body 1.

Next, when closing and locking the door 2, after aligning the door 2 with the main body 1, push down the handle 8 (move to the right in FIG. 2). Then, lock piece 2
3 moves downward and the locking piece 23 is inserted into the engaging piece 22.
The groove 25 is inserted to prevent the door 2 from opening. Furthermore, the handle 8 is pushed in until the locking hole 10 and the locking stopper 16 of the locking piece 15 are located on the same line (this state occurs when the surface of the door 2 and the surface of the handle 8 are on the same plane). At this time, the key 13 is rotated in the opposite direction to that described above to move the rotation plate 14. This movement of the rotating plate 14 causes the locking piece 15 to move upward via the engagement pin 14', thereby causing the locking stopper 16 to protrude into the locking hole 10. It is sufficient to remove the key 13 from the key part 12 in this state.

However, in something like this, the handle 8
When the handle 8 is broken, a part of it remains on the locking stopper 16 and the handle 8 moves forward by the spring 32. After that, when the handle 8 is lifted up, the engaging piece 22 and the groove 25 of the locking piece 23 are engaged. It can be moved in the direction of release, and the product inside the main body 1 can be taken for free. Also, use a screwdriver or the like to pry open the gap between the lower end of the handle 8 and the door 2.
By removing the locking piece 15 inserted into the locking hole 10, the same drawbacks as mentioned above occurred.

Purpose of the invention The present invention is intended to improve the above-mentioned drawbacks, and is to prevent the door from being opened even if the handle is broken when the door is locked with a key.

Structure of the Invention In order to achieve the above object, the present invention includes a locking piece connected to the handle via a connecting rod, and a groove provided on the locking piece to engage with a locking piece formed on the main body. It has a locking plate and a stopper attached to the locking piece to prevent the locking piece from moving upward in the locked state, and the attachment position of the stopper to the locking piece is between the engaging pin and the stopper. At a position where the gap distance is shorter than the length of the groove,
Further, the stopper is located at a position on the locus of movement of the engaging pin where it comes into contact with the engaging pin.

DESCRIPTION OF EMBODIMENTS The configuration of one embodiment of the present invention will be explained below in the fourth section.
5 and 5, structures that are the same as the conventional ones are given the same reference numerals and detailed explanations will be omitted. In the figure, 33 is a stopper, and the locking piece 2
It is attached to the rod 24 of No. 3 by welding or the like. This stopper 33 is located below the engagement pin 14' when it is in the locked position with the key 13 (shown by solid lines in FIGS. 4 and 5). The unlocking position of the engagement pin 14' is the position shown by the two-dot chain line in FIGS. 4 and 5.

Next, the operation will be explained, but the only difference is that the engagement pin 14' moves in an arc and does not come into contact with the stopper 33, and the rest of the unlocking and locking operations are the same as the conventional ones, so the explanation will be omitted.

If the handle 8 is broken or the locking hole 15 is removed from the locking hole 10 with a screwdriver or the like, the locking piece 23 will not move upwards even if the handle 8 is lifted because the stopper 33 will hit the locking pin 14'. , since the groove 25 of the locking piece 23 engages with the engaging piece 22, the door 2
It cannot be opened.

Effects of the invention As described above, the present invention has a locking piece connected to the handle via a connecting rod, and a locking plate provided with a groove provided in the locking piece and engaging with an engaging piece formed on the main body. and a stopper attached to the locking piece to prevent the locking piece from moving upward in the locked state, and the mounting position of the stopper to the locking piece is such that the gap distance between the engagement pin and the stopper is By setting the stopper at a position shorter than the length of the groove and in contact with the engaging pin on the locus of movement of the engaging pin, if the handle is broken on the way, the spring will prevent the handle from moving forward. Even if it protrudes, the engagement pin and the stopper come into contact with each other to prevent the locking piece from moving (until it is disengaged from the engagement piece). Therefore, the door will not open unless the key is operated, so the product will not be taken for free.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional vending machine, Figure 2 is a sectional view of the locking device in Figure 1, Figure 3 is a perspective view of the main part of Figure 2, and Figure 4 is a book equivalent to Figure 2. FIG. 5 is a sectional view showing an embodiment of the invention, and FIG. 5 is a perspective view of the main part of FIG. 4. 2...door, 8...handle, 10...locking hole,
13...key, 14...rotating plate, 14'...engaging pin, 15...locking piece, 22...engaging piece, 23...
Lock piece, 33...stopper.

Claims (1)

[Scope of utility model registration request] A door is provided on the front of the main body and is pivoted on one side up and down, and a handle is pivoted on the upper end of the door and has a locking hole formed in the bottom of the lower end. A rotating plate attached below, a locking piece that moves in a direction toward and away from the handle by means of an engagement pin attached to the rotating plate, and a locking piece provided on this locking piece. a locking stopper that moves in and out of the locking hole of the handle in conjunction with the movement of the handle, a locking piece connected to the handle via a connecting rod, and a locking piece provided on the locking piece and formed on the main body. It consists of a locking plate provided with an engaging groove, and a stopper attached to the locking piece to prevent the locking piece from moving upward in the locked state, and the attachment position of the stopper to the locking piece is as follows: A door locking device characterized in that the distance between the engagement pin and the stopper is shorter than the length of the groove, and the stopper is in contact with the engagement pin on the locus of movement of the engagement pin.