JPH0622479U - Lock for vending machine - Google Patents

Abstract

(57) [Summary] [Purpose] The key can be pulled out from the cylinder lock with the handle unlocked and protruding from the handle case, and the handle can be locked with one touch without reusing the key. In addition, it is to prevent the handle from being illegally popped out by a special shock or vibration. [Structure] A handle case 2, a handle 3, a cylinder lock 4, a cam 5 attached to the cylinder lock 4, and a barb 10 for locking or unlocking by rotation of the cam 5.
And a connecting cylinder 7 that connects the cam 5 to the barb piece 10.
And the rotary cylinder 6 rotatably inserted into the connecting cylinder 7, and the engaging protrusion 6c of the rotary cylinder 6 is slidably inserted into the slide groove 7b of the connecting cylinder 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lock for a vending machine.

[0002]

[Prior art]

 Usually, a vending machine lock as shown in (1) and (2) of FIG. 11 is attached to the vending machine. The lock 20 for a vending machine of (1) is a handle case 30 attached to a door of a vending machine, and a handle 40 that is housed in the handle case 30 and is biased in a direction to project outward from the handle case 30. And a cylinder lock 50 which is fitted into the tubular body 40a of the handle 40. The handle 40 is locked by the barb piece 60 so that the handle case 30 does not protrude outwardly. The metal fitting attached to the bolt 70a at the end drives the lock mechanism on the box side of the vending machine to lock the door. However, since the barbed piece 60 is engaged with the cam 80 in the long groove 60a and the barbed piece 60 is supported only by the bar 60b, the lock of the barbed piece 60 is released by a special shock or vibration, and the handlebars are released. There was a fear that the 40 jumped illegally.

Therefore, in order to solve such a problem, a lock 20 for a vending machine shown in (2) of the same figure has been developed. This is one in which the bar bar 60 is forcibly driven by the rotation of the cam 80. When the bar bar 60 is slid by the forcible drive of the cam 80, the lock is released, and the handle 40 is compressed by the compression spring 40b. You can jump out of 30 and open the door. In this state, the key 90 is inserted into the cylinder lock 50, but the inner cylinder cannot be rotated so that it cannot be pulled out, so that the operator can work with the key attached. This has an excellent advantage that the operator does not lock the door while leaving the key 90 in the box.

[0004]

[Problems to be solved by the device]

 However, since a worker usually hangs a key around his / her waist with a chain or a string, and after unlocking the lock, he / she refills the product while hanging the key and performs other work. There was a problem that the work was difficult to do if the cylinder lock could not be removed. In addition, there is a conventional one-touch locking method, but this is because there is a space in the barb piece where the barb itself moves in the releasing direction at the engagement part between the cam and the barb, and the barb Since it is supported only by springs, there is a risk that the barbs will be unlocked due to special shocks and vibrations, and the handle will pop out illegally. The present invention has been made in view of the above problems, and an object thereof is to be able to pull out a key from a cylinder lock while the handle is unlocked and project from the handle case. It is to lock the handle with one touch without reusing, and to prevent the handle from being illegally popped out by a special shock or vibration.

[0005]

[Means for Solving the Problems]

 The gist of the lock for a vending machine according to claim 1 for achieving the above object is to provide a handle case fixed to a door side of the vending machine and a direction in which the handle case is housed in the handle case and protrudes outward. A biased handle, a cam that rotates with the rotation of the inner cylinder of the cylinder lock mounted on the handle, and a barb that locks or unlocks the handle with respect to the handle case by the rotation of the cam. In the lock for a vending machine, the cam includes a connecting cylinder connected to the barb, and a rotating cylinder rotatably inserted in the connecting cylinder and connected to an inner cylinder of the cylinder lock. The protrusion of the rotary cylinder is slidably inserted into the slide groove of the connecting cylinder, and the gist of the lock for the vending machine according to claim 2 is as described in claim 1. For the vending machine described, the lock odor The spring for restricting the rotation of the connecting cylinder is elastically mounted in the slide groove of the connecting cylinder. The gist of the lock for a vending machine according to claim 3 is that of claim 1. In the lock for a vending machine described above, the connecting cylinder is characterized in that a circular projection is inserted into an engaging groove of a bar bar to be connected, and a cutout surface is provided on the circular projection.

[0006]

[Action]

 Thus, in the lock for the vending machine according to the first aspect, the lock of the barb is released by the rotation of the cam by the operation of the key, and the handle projects outward from the handle case. In this state, the barbs are not slidable, but the rotating body of the cam can rotate, so that the key can be returned to its original position and can be pulled out from the cylinder lock. It is possible to prevent popping out. Further, in the lock for the vending machine according to claim 2, since the rotation of the connecting cylinder in the unlocking direction is restricted by the spring, the rotation of the connecting piece in the direction of pushing up the barb piece due to vibration or other external force is prevented. To do. Further, in the lock for a vending machine according to claim 3, when the barb piece slides upward, the groove end of the engaging groove comes into contact with the bottom end of the notch surface of the cylindrical projection, and the connecting cylinder pushes up the barb piece. Since the rotation in the direction is forced, the barbs are not pushed up.

[0007]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a sectional view of a lock for a vending machine according to the invention of claim 1, FIG. 2 is a sectional view of a handle case, FIG. 3 is a sectional view of a handle, and FIG. 4 (1) is a partially omitted side view of a cylinder lock. , (2) is a sectional view of the rotary cylinder, (3) is a sectional view of the connecting cylinder, and FIG. 5 is a perspective view of the cam.

A lock 1 for a vending machine has a handle 3 housed in a handle case 2 attached to a door, and a cylinder lock 4 is inserted in the handle 3. As shown in FIG. 2, the handle case 2 has a T-shape formed by a cylindrical body 2a and a mounting portion 2b orthogonal to the cylindrical body 2a, and a lock groove 2c is formed at the rear end of the cylindrical body 2a. A through hole 2d into which the bolt 8a of the inner case 8 is inserted is opened in the portion. Further, the mounting portion 2b is provided with a handle storage portion 2e, and is attached to the door 9a with the back surface side of the mounting portion 2b being in contact.

The handle 3 is formed in a T-shape by a tubular body 3a having a circular cross section that loosely fits into the tubular body 2a and a grasping portion 3b provided orthogonal to the tubular body 3a. A compression spring 3c elastically mounted in the back is urged in a direction projecting from the handle case 2. Further, the rear end portion of the tubular body 3a is slidably inserted into an inner case 8 in which a metal fitting 8b for driving a lock mechanism of the box body 9b is fixed to a bolt 8a by a nut 8c. A cylinder lock 4 is fitted inside.

As shown in FIG. 4, the cylinder lock 4 has an outer cylinder 4a fixed to the handle 3 and an inner cylinder 4b rotatably fitted in the outer cylinder 4a. The cam 5 is attached to 4b.

As shown in FIGS. 4 and 5, the cam 5 is connected to the rotary cylinder 6 in which the bolt 4c of the cylinder lock 4 is inserted in the cylinder 6a, and the barb piece 10 via the connection protrusion 7a. And the connecting cylinder 7 that has been formed. The rotary cylinder 6 is provided with two flange pieces 6b on a cylinder body 6a, and a connecting cylinder 7 is rotatably inserted at the tip of the cylinder body 6a. The engaging protrusion 6c of the rotary cylinder 6 is inserted into the slide groove 7b of the connecting cylinder 7 to regulate the rotation angle within the range of 90 degrees. Further, the front flange 6b of the rotary cylinder 6 is provided with a notch groove 6d, which is located in front of the spring pin 6e as shown in FIG. 6, and if there is a misassembly of parts, insert a screwdriver or the like from here. The spring pin 6e can be pulled out.

Locking and unlocking of the vending machine lock 1 as described above is performed when the handle 3 is housed in the handle case 2 as shown in (2) of FIG. The handle 3 is locked by being locked in the lock groove 2c of the case 2. In this case, as shown in (1) of the figure, the inner cylinder 4b of the cylinder lock 4 is located in the locked state, and the key 11 can be inserted and rotated in the releasing direction. You can also The engaging projection 6c of the rotary cylinder 6 is in contact with the end of the slide groove 7b of the connecting cylinder 7.

Then, as shown in (1) of FIG. 8 from this locked state, when the barb piece 10 is slid upward by the rotation of the cam 5 by the operation of the key 11 in the releasing direction, (2) in FIG. ), The handle 3 is unlocked so that the compression spring 3c projects outward from the handle case 2, and the handle 3 can be rotated to open the door 9a. Further, in this state, the rotary cylinder 6 rotates as shown in (3) of FIG. 8, but since it can be returned to the original position by the slide groove 7b of the connecting cylinder 7, the key 11 can be pulled out.

Next, when closing the door 9a, when the handle 3 is pushed into the handle case 2 after closing the door 9a, the barb piece 10 is locked in the lock groove 2c by the spring 10a, and the handle 3 is removed. Locked. Therefore, the handle 3 can be locked with one touch without re-operating the key 11.

Next, an embodiment of a lock for a vending machine according to claim 2 will be described. This vending machine lock 1 has a T-shape with a cylindrical body 2a and a mounting portion 2b orthogonal to the cylindrical body 2a. A lock groove 2c is provided at the rear end of the cylindrical body 2a and a rear end portion thereof is provided. Is a handle case 2 having a through hole 2d into which the bolt 8a of the inner case 8 is inserted, a cylindrical body 3a having a circular cross section loosely fitted in the cylindrical body 2a, and provided orthogonally to the cylindrical body 3a. The handle 3 is formed in a T shape by the gripping portion 3b, and is urged in a direction projecting from the handle case 2 by a compression spring 3c elastically mounted inside the tubular body 3a, and the tubular body 3a of the handle 3. Is composed of an inner case 8 into which is slidably inserted, and a cylinder lock 4 fitted and inserted into a cylindrical body 3a of the handle 3, and a cam 5 attached to an inner cylinder 4b of the cylinder lock 4 rotates. The structure composed of the cylinder 6 and the connecting cylinder 7 is the same as that of claim 1. There is only different configurations is elastically spring 7c to the coupling tube 7 of the slide groove 7b.

As shown in FIG. 9, when the handle 3 is locked, vibration or other unexpected external force causes the connecting cylinder 7 to rotate in the direction of the arrow in the direction of the arrow, that is, the bar bar 10 is pushed up. This prevents the handle 3 from being unlocked by rotating in the direction.

The vending machine lock according to claim 3 has substantially the same structure as that of the vending machine lock 1 according to claim 1 as in the above-mentioned claim 2, and a cutout is formed in the connecting projection 7 a of the connecting tube 7. Only the configuration in which the surface 7d is provided is different. As shown in FIG. 10, the notch surface 7d is formed so as to incline to the upper right, so that when the barb piece 10 moves in the direction of the arrow due to vibration or other unexpected external force, as described above, When the groove end of the engaging groove 10a of the piece 10 abuts on the bottom end of the cutout surface 7d, a rotational torque in the direction of the arrow is generated in the connecting cylinder 7 to prevent the barb piece 10 from rotating in the upward direction. Therefore, unlocking of the handle 3 is prevented.

[0018]

[Effect of device]

 A cam that rotates with the rotation of the inner cylinder of the cylinder lock is composed of a connecting cylinder connected to the barb, and a rotary cylinder rotatably inserted in the connecting cylinder and connected to the inner cylinder of the cylinder lock. Since the protrusion of the rotary cylinder is slidably inserted into the slide groove of the connecting cylinder so that the barbs are unlocked and the handle protrudes outward from the handle case, Since the inner tube of the lock can be rotated, the key can be pulled out from the cylinder lock, and even when the operator hangs the key from the waist with a chain or string, it hinders refilling of products and other work. No more, and after pulling out the key, simply close the door and push in the handle, and you can lock the key with one touch without the hassle of reusing the key.

Since the rotation of the connecting cylinder in the unlocking direction is restricted by the spring, the connecting piece is prevented from rotating in the direction of pushing up the barb piece due to vibration or other external force.

By providing the notch surface on the cylindrical protrusion, when the barb slides upward, the groove end of the engaging groove abuts the bottom end of the notch surface of the cylindrical protrusion so that the connecting cylinder pushes up the barb. Since it forces rotation in the opposite direction, the barbs are not pushed up.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a lock for a vending machine.

FIG. 2 is a sectional view of a handle case.

FIG. 3 is a sectional view of a handle.

FIG. 4 (1) is a side view of the cylinder lock with a part thereof omitted, (2)
And (3) are sectional views of the cam.

FIG. 5 is a perspective view of a cam.

6 is a cross-sectional view taken along the line aa of FIG.

FIG. 7 shows a locked state of a lock for a vending machine, (1) is a front view of a cylinder lock into which a key is inserted,
(2) is a partially omitted sectional view of a lock for a vending machine, and (3) is a transverse sectional view of a cam.

FIG. 8 shows a lock release state of a vending machine lock, (1) is a front view of a cylinder lock in which a key is rotated to an unlocking position, and (2) is a lock of a vending machine lock. A partially omitted cross-sectional view of the unlocked state, and (3) is a cross-sectional view of the cam in the unlocked state.

FIG. 9 is a sectional view of a cam in which a spring is mounted.

FIG. 10 is a cross-sectional view showing a connected state of the connection protrusion and the barb piece.

FIG. 11 is a sectional view of a conventional lock for a vending machine with a locked handle, and FIG. 11 is a sectional view of a lock for a conventional vending machine with a protruding handle.

[Explanation of symbols]

 1 Lock for a vending machine 2 Handle case 3 Handle 4 Cylinder lock 5 Cam 6 Rotating cylinder 7 Connecting cylinder 8 Inner case 9a Door 9b Box 10 Lock bar 11 Key

Claims (3)

[Scope of utility model registration request] 1. A handle case fixed to a door side of a vending machine, a handle housed in the handle case and biased outwardly, and a cylinder lock mounted on the handle. In a vending machine lock having a cam that rotates with the rotation of a cylinder and a barb that locks or unlocks a handle with respect to the handle case by the rotation of the cam, the cam is connected to the barb. Connected cylinder and a rotary cylinder that is rotatably inserted in the connection cylinder and connected to the inner cylinder of the cylinder lock, and the projection of the rotary cylinder is slidably inserted into the slide groove of the connection cylinder. A lock for a vending machine, which is characterized by that. 2. The lock for a vending machine according to claim 1, wherein a spring that restricts rotation of the connecting cylinder is mounted in a slide groove of the connecting cylinder. 3. The lock for a vending machine according to claim 1, wherein the connecting tube has a circular projection inserted into an engaging groove of a bar bar to be connected, and the circular projection is provided with a cutout surface. A unique lock for a vending machine.