JPH063102Y2 - Lock for vending machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improvement of a lock for a vending machine.

(Prior Art) Vending machines are becoming more and more convenient for shoppers due to the increase in large-scale, high-end models that can trade products even with banknotes, but on the other hand, the number of crimes aimed at large amounts of cash contained in them has increased. Is expected.

Therefore, the conditions required for the lock for the vending machine are firstly strong against vandalism, secondly difficult to be unlocked (picking), and difficult to duplicate keys, and third key difference. (Number of knitting) is large, and fourthly, it is rich in durability and weather resistance. In the conventional lock, an ordinary nut is provided on the box body side, and a bolt provided on the door side is screwed into the nut.

(Problems to be solved by the invention) In the conventional lock for a vending machine, it is the fact that all of the above conditions cannot be satisfied at the same time. Also, when the door is closed, the number of times the bolt is turned through the handle However, there was a problem that it was troublesome.

In consideration of such conventional situations and problems, the present invention is strong against vandalism, hard to be unlocked (picking), has many key differences (number of knitting), is not easy to duplicate keys, and is durable. An object of the present invention is to provide a lock for a vending machine, which is excellent in weather resistance and weather resistance and has a simple door closing operation.

(Means for Solving Problems) In order to achieve the above object, the present invention provides a nut provided on a box body side, a handle case fixed to a door side, and a rotatable handle case at a predetermined position. It is equipped with a bolt that is mounted and screwed with the nut, and a handle that is biased in a direction that projects outward from the handle case, and unlocks from the handle case by operating a key that is inserted into a cylinder equipped with the handle. Only when it is provided with an engaging portion that projects from the handle case and engages with the bolt to rotate the bolt, locks the handle and unlocks the lock. And a nut holding fixture that holds the nut by restraining movement in the axial direction, and the nut has a holding cylinder having a tapered hole for guiding the bolt at the inlet, A plurality of nut segments held by an elastic body so as to be slidable in the axial direction are provided in the inner part of the tapered hole, and the plurality of nut segments are retracted and expanded by the inserting operation of the bolt, and a male screw part of the bolt is provided. It is characterized in that it is arranged so as to be screwed with.

(Operation) According to the lock for a vending machine according to the present invention, the nut retainer fixed to the inside of the box body restrains the rotation and the movement in the axial direction to retain the nut, and the nut is bolted to the inlet. A holding cylinder having a taper hole for guiding the guide and a plurality of nut segments slidably held inside the taper hole, and guiding the insertion of the bolt by the taper hole when closing the door. , The bolt is screwed into a screw hole formed by the plurality of nut segments only by inserting the bolt into the depth of the tapered hole, and the handle is projected from the handle case only when unlocked. It can be tightened easily by engaging the bolt through the engaging portion provided on the handle and rotating the bolt only a few times. The handle can be locked and unlocked with respect to the handle case.

(Example) Next, the Example of this invention is described, referring drawings.

FIG. 1 (a) is a vertical cross-sectional view showing an essential part of the entire lock for a vending machine according to an embodiment of the present invention, and FIG. 1 (b) is a partially cutaway plan view thereof.

The lock for the vending machine has a nut 6 provided on the box body 1 side,
The handle case 11 fixed to the door 2 side and the nut 6 rotatably mounted at a predetermined position of the handle case 11.
It is provided with a bolt 27 that is screwed with the handle 27 and a handle 14 that is biased in a direction projecting outward from the handle case 11. The nut holder 3 fixed inside the box body 1 rotates and axially moves. Hold the nut 6 by restraining the movement of
The nut 6 is provided with a holding cylinder 7 having a tapered hole 7a at the inlet and a plurality of nut segments 8 slidably held deep inside the tapered hole 7a. 7a guides the insertion of the bolt 27, and the plurality of nut segments 8 are screwed onto the bolt 27 so as not to be pulled out only by the operation of inserting the bolt 27 into the screw hole 8a formed by the plurality of nut segments 8. However, only when the lock is released, the handle 14 is attached to the handle case 1.
1, the handle 14 engages with the bolt 27 via the engaging portion 21, and the bolt 27 can be tightened easily by rotating the bolt 27 a few times.
The handle 14 can be locked and unlocked with respect to the handle case 1 by operating a key inserted into the cylinder 22 equipped in the No. 4 cylinder.

2 (a) is a front view showing the nut holder, FIG. 2 (b) is a partially cutaway plan view thereof, and FIG. 2 (c) is a side view thereof.

The nut holder 3 includes a bent upper plate 3a, a lower plate 3b,
It has a front plate 3c and both side plates 3d and 3e, the front plate 3c is provided with a long hole 3f along the lateral direction, and a bracket 5 made of a plate material shown in FIG. 3 is fixed to the inside of the box body 1, The long hole 5a of the bracket 5 is aligned with the long hole 3f, and the mounting piece 3g provided by bending the tip of the upper plate 3a is attached to the bracket 5 with the small bolt 4, and the rotation and the movement in the axial direction are restricted. Then, the nut 6 is held.

4 (a) is an exploded vertical sectional view showing the nut, FIG. 4 (b) is a sectional view taken along the line XX of FIG. 4 (a), and FIG. 4 (c) is a longitudinal sectional view in the assembled state. FIG. 3D is a front view thereof.

The nut 6 has a tapered hole 7a for guiding the bolt 27 to the inlet.
And a three-segment nut holder 8 of the same shape that is slidably retained inside the tapered hole 7a.

The holding cylinder 7 has a square nut type outer shape and has a tapered hole 7
The inner surface of the segment hole 7c has a tapered segment hole 7c formed by placing a small step 7b in the back of a and a flange receiving hole 7f formed by placing a straight hole 7d and a step 7e on the other end side. Partition guide pieces 7g are provided at three positions at equal angular intervals along the axis so as to continuously project inward in the axial direction. A washer 9a and a compression spring 10 are housed in the straight hole 7d in this order from the back, and a nut segment 8 is slidably fitted along the axial direction between the partition guide pieces 7g of the segment hole 7c. ing. Also, the holding cylinder 7
Has an annular groove 7h formed by forming an acute angle portion 7i by the inner peripheral surface of the flange receiving hole 7f and the inclined surface around it.
The inner flange plate 9b fitted in the flange receiving hole 7f is
Caulking and fixing with a sharp corner 7i, the compression spring 10 is straight hole 7d
It is stored inside.

The outer circumference of the nut segment 8 is tapered corresponding to the segment hole 7c of the holding cylinder 7,
The bolt 27 is biased by the compression spring 10 in the direction opposite to the expanding side of c and is prevented from slipping out of the tapered hole 7a by the small step 7b, and the inserting operation of the bolt 27 guided and inserted in the tapered hole 7a. A screw hole 8a is formed which is pushed and expanded toward the expansion side of the segment hole 7c by only the screw hole 8c and is screwed into the bolt 27 so as not to be pulled out.

The nut 6 is in the nut holder 3 and its rotation is restricted by the upper plate 3a and the lower plate 3b, and its movement in the axial direction is restricted by the front plate 3c and the bracket 5.

FIG. 5 (a) is a front view showing the handle case, and FIG. 5 (b) is a partially cutaway side view thereof.

The handle case 11 has a T-shaped configuration including a tubular portion 12 having a circular cross section and a mounting portion 13 extending in a direction orthogonal to the tubular portion 12, and is arranged at a predetermined position near the mounting portion 13 of the tubular portion 12 in the radial direction. There is a through hole 12c into which the bolt 27 is inserted in the upper and lower lock holes 12a, 12a and the tip plate 12b, and the handle storage portion 13a formed on the outer surface of the mounting portion 13 is formed.
And the inner surface side of the mounting portion 13 is brought into contact with the outer surface of the door 2 at a predetermined position, and the square root round head bolt 30 inserted into the square holes 13b, 13b provided at two places and the nut 31 screwed to this. It is fixed to the door 2.

FIG. 6 (a) is a front view showing the handle, and FIG. 6 (b) is a partially cutaway side view thereof.

The handle 14 is formed in a T-shape by a cylindrical body 15 having a circular cross section that is loosely fitted to the inner circumference of the cylindrical portion 12 and a handle portion 14 a along a direction orthogonal to the cylindrical body 15, and the handle 14 has a T-shaped interior. The lock case 18 is biased in a direction projecting from the cylindrical portion 12 by the compression spring 16 and is provided with a lock portion 18 for locking the handle case 11 at a predetermined position, and the handle case 1
The bolt 2 is engaged with the bolt 27 when the bolt 2
It is provided with an engaging portion 21 for rotating 7 and a cylinder 22 into which a key is inserted.

The cylindrical body 15 has a lock hole 15a formed in a predetermined position of the lock portion 18 along the radial direction and a through hole 15c formed in the tip plate 15b, and the bar case 17 is provided at an intermediate position corresponding to the lock hole 15a. Is fixed.

The lock portion 18 is slidably fitted into the bar case 17 and is urged by a compression spring 19 in a direction to be protruded.
0, the cam 25 at the tip of the cylinder 22 is fitted in the recess 20a formed in the barb 20, and the cylinder 22 is brought into the locked position by the operation of the key to resist the urging force of the compression spring 16 from the cylinder. When the body 15 is fitted into the tubular portion 12 and the handle 14 is positioned at a predetermined position of the handle case 11, the lock hole 15 a is urged by the urging force of the compression spring 19.
And the barb piece 20 projects and locks from the lock hole 12a,
When the cylinder 22 is brought to the unlocked position, the bar 25 causes the bar 25 to move the bar 25 to the bar case 17 shown in FIGS. 7 (a) to 7 (c).
Step inside and unlock. The bar bar case 17 has a cylindrical shape, and the tip of the cylinder 22 is loosely fitted to the inner periphery of the bar bar case 17 and has a bar bar hole 17a into which a bar bar piece is slidably inserted along the diametrical direction. It is fixed in position.

The engaging portion 21 projects inwardly adjacent to the tip plate 15 a, and when the handle 14 projects from the handle case 11 by the urging force of the compression spring 16 only when the lock is released, the head portion of the bolt 27 is fixed. By engaging the parallel pin 27d, the bolt 27 can be rotated integrally with the handle 14.

8 (a) is a front view showing the cylinder, FIG. 8 (b) is a partially cutaway side view thereof, FIG. 8 (c) is a rear view thereof, and FIG. 9 is a partially enlarged sectional view.

The cylinder 22 is an outer cylinder 23 fixedly mounted on the handle 14.
And an inner cylinder 24 rotatably fitted in the outer cylinder 23, and a key hole 24a of the inner cylinder 24 and a plurality of tumbler holes 24 formed along two radial directions orthogonal to each other.
b and 24c are slidably fitted and the tip is key hole 24a
A plurality of tumblers 26 urged in the direction of projecting to each other, the inner cylinder is rotated by the rotation operation of the key inserted into the key hole 24a by pushing each tumbler 26 away, and the bar bar case 17 against the bar bar case 17. 20 can be operated in and out.

The bolt 27 has a conical tip 27a, a male screw 27b engraved in the vicinity of the tip 27a, and annular grooves 27c, 27c formed at two positions at a predetermined interval in the middle part.
The cylindrical portion 1 has a parallel pin 27d fixed to the head by projecting in the diametrical direction, and projecting the tip and the male screw 27b.
2 so as to be rotatable with respect to the inside of the cylindrical portion 12 and the grooves 27c, 2
7E, and two Es fitted in the grooves 27c, 27c
Axial movement is restrained by the rings 28, 28,
The head is inserted into the cylindrical body 15 through the through hole 15c, and the male screw 27b is screwed into the nut 6 only by the inserting operation.

The key 29 is, as shown in FIGS. 11 (a) and 11 (b), the side surface 2
9c and the end surface 29d have a plurality of recesses 29a, 29b, and a plurality of tumblers 26 in the inner cylinder 24 of the cylinder 22.
The inner cylinder 24 is made rotatable when the tips of the inner cylinders match the recesses 29a and 29b, respectively.

Next, the operation of the lock for the vending machine according to the above embodiment of the present invention will be described.

When unlocking and closing the door 2 in the open state,
As shown in FIG. 8 (a), the key hole 24 is
“A” is located diagonally in the lower right direction, and the handle 14 projects from the handle case 11. When you close the door 2, bolt 2
The conical tip 27a of 7 is guided by the taper hole 7a of the holding cylinder 7 to face the inside of the screw hole 8a, and the nut segment 8 is pushed back by the bolt 27 against the biasing force of the compression spring 10 to form the taper hole 7a. Of the nut segment 8, the bolt 27 is easily inserted, and the male screw 27b of the bolt 27 is screwed into the nut segment 8 so that the bolt cannot be pulled out. When the handle 14 is rotated in this state, the bolt 27 is rotated through the engaging portion 21 two or three times, and the bolt 14 is integrally formed with the handle 14.
It can be easily tightened by turning 7. The inner cylinder 24 of the cylinder 22 is rotated 180 degrees by operating the key 29, and the key hole 24a is positioned diagonally in the upper left direction in FIG. 8 (a) to handle the handle against the biasing force of the compression spring 16. The tubular body 15 of 14 is pushed into the tubular portion 12 of the handle case 11, and the handle portion 14a is attached to the handle storage portion 13.
When it is positioned at a, the barb piece 20 projects through the lock hole 15a and the lock hole 12a by the urging force of the compression spring 19, and the handle 14 is locked by the handle case 11 and locked.

When the locked door 2 is opened in such a closed state, the inner cylinder 24 is rotated 180 degrees by the key 29, and the inner cylinder 24 is rotated by 180 degrees as shown in FIG.
As shown in (a), when the key hole 24a is positioned diagonally to the lower right by the key 29, the cam 25 at the tip of the inner cylinder 24 is
The bar bar 20 is pushed into the bar hole 17a by the lock lever, the lock is released, the handle 14 projects from the handle case 11 by the urging force of the compression spring 16, and the engaging portion 21 of the handle 14 engages with the parallel pin 27d of the bolt 27. Then, by turning the handle 14, the bolt 27 can be turned integrally with the handle 14 to release the screw engagement between the nut 6 and the bolt 27 to unlock the handle.

The lock according to the above embodiment of the present invention has a plurality of tumblers 26 arranged in directions orthogonal to each other, and a plurality of recesses 29a and 29b are formed in the corresponding key 29, so that the key difference (knitting) Since there are many numbers, it is not easy to duplicate the key 29, and it is difficult to be unlocked (picked).

The lock according to the present invention is not limited to the above embodiment, and as shown in FIG. 12, the nut 50 has guide grooves 60j and 60j which are continuous with both side surfaces of the holding cylinder 60.
And the front plate 41 constituting the nut holder 40 has notches forming straight and parallel guide edges 41a, 41a, and the guide edge 41 is provided in the guide grooves 60j, 60j.
The nuts 50 may be slidably held along the guide edges 41a and 41a by fitting a and 41a, and various other modifications are possible.

(Advantages of the Invention) The present invention is configured as described above, and has a handle case fixed to the door side, and a bolt rotatably mounted at a predetermined position of the handle case and screwed with a nut provided on the box body side.
By having a handle urged outward from the handle case, it is resistant to vandalism, and has excellent durability and weather resistance. A nut holder that holds the nut by fixing the movement of the bolt to the nut, and the nut is slidably held inside the holding cylinder having a tapered hole for guiding the bolt at the inlet. By providing a plurality of nut segments, even if the positions of the bolt and the nut are deviated, the bolt to be inserted when the door is closed is guided by the tapered hole to be reliably inserted into the nut, The nut segment forms a screw hole that is not pulled out only by the inserting operation of the bolt guided by the taper hole, and is screwed into the bolt so that the nut segment is not screwed into the bolt only by the inserting operation of the bolt. Since the door can be screwed in, the operation of closing the door is extremely easy, and the key inserted into the cylinder equipped in the handle locks and unlocks the handle with respect to the handle case. Only by providing the engaging portion that projects from the handle case and engages with the bolt to rotate the bolt, it is possible to obtain an effect such that unauthorized unlocking (picking) is not easy.

[Brief description of drawings]

FIG. 1 (a) is a vertical cross-sectional view showing an essential part of the entire lock for a vending machine according to an embodiment of the present invention, FIG. 1 (b) is a partially cutaway plan view thereof, and FIG. 2 (a) is a nut. A front view showing the holding tool, the same figure (b) is a partially cutaway plan view thereof, the same figure (c) is a side view thereof, FIG. 3 is a front view showing a bracket, and FIG. 4 (a) shows a nut. FIG. 5 (b) is an exploded vertical sectional view, FIG. 5 (b) is its XX arrow view, FIG. 6 (c) is its assembly drawing, FIG. 5 (d) is its front view, and FIG. Front view, the same figure (b) is a partially broken side view,
FIG. 6 (a) is a front view showing the handle, FIG. 6 (b) is a partially cutaway side view thereof, and FIG. 7 (a) is a rear view showing the bar case, the same figure.
(b) is a longitudinal sectional view thereof, (c) is a bottom view thereof, (a) is a front view showing the cylinder, (b) is a side view thereof, (c) of the same figure.
Is a rear view thereof, FIG. 9 is an enlarged front sectional view showing an inner cylinder of the cylinder, FIG. 10 is a side view showing a bolt, and FIGS. 11 (a) and (b) are side views showing an example of a key, respectively. A partial plan view and FIG. 12 are exploded perspective views showing another embodiment of the present invention. 1 ... Box body, 2 ... Door, 3 ... Nut holder, 6 ... Nut,
7 ... Retaining cylinder, 7a ... Tapered hole, 8 ... Nut segment, 8a ... Screw hole, 11 ... Handle case, 14 ... Handle, 21 ... Engaging portion, 22 ... Cylinder, 27 ... Bolt,
29 ... key

Claims (1)

[Scope of utility model registration request] 1. A nut provided on the box body side, a handle case fixed to the door side, a bolt rotatably mounted at a predetermined position of the handle case and screwed with the nut, and an outside of the handle case. A handle urged in a direction protruding toward the handle case, and the key is inserted into a cylinder mounted on the handle to project from the handle case only when the lock is released from the handle case to engage the bolt with the bolt. In a lock for a vending machine that has an engaging portion for rotating and locks the handle and unlocks the lock, a nut holding that holds the nut inside the box body by restraining rotation and axial movement Fix the ingredients,
The nut includes a holding cylinder body having a tapered hole for guiding a bolt at an inlet, and a plurality of nut segments held by an elastic body slidably in the axial direction at the inner side of the tapered hole. The lock for a vending machine, wherein the lock is arranged so as to be retracted and expanded by the inserting operation of the bolt and to be screwed with the male screw portion of the bolt.