JP3375542B2 - Cylinder lock for door - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder lock of a lock device attached to an opening / closing door of a vending machine, a locker or the like.

[0002]

2. Description of the Related Art Cylinder locks that are directly attached to opening / closing doors of vending machines, lockers, or the like through a lock handle that constitutes a locking device may be intentionally destroyed by a thief. Therefore, it is required to devise a key hole for the rotor rotatably provided in the outer cylinder of the cylinder-lock.

By the way, the keyhole of the rotor is destroyed by a rod-shaped tool (dras bar, drill, etc.). Therefore, it is necessary to consider a countermeasure for the rod-shaped tool.
Therefore, it is conceivable to attach a protective cover that can be opened and closed or detached so as not to expose the key hole of the rotor to the tip of the outer cylinder of the cylinder-lock. However, the invention based on such an idea has a drawback that the protective cover itself has a complicated structure and that the operation key (key) cannot be inserted unless a troublesome operation such as opening / closing or attachment / detachment is performed. Furthermore, if the protective cover itself is destroyed by the rod-shaped tool, there remains a problem that the keyhole of the rotor cannot be sufficiently protected.

Therefore, at present, from the viewpoints of simplicity of structure, ease of mounting, operability, anticorrosion of the rotor, and the like, the appearance of a cylinder-lock which is structurally superior is desired.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional demands, the present invention is structurally simple, and a hard cap is provided at the tip of a cylinder lock (an inner cylinder body).
The rotor's engaging part or the outer cylinder's short cylindrical fitting part ) can be covered with one touch and over the entire surface, and the operability is good even when a normal key is inserted. The purpose of the present invention is to provide a cylinder lock for an opening / closing door that can fully exhibit the above.

[0006]

A cylinder lock for an opening / closing door of the present invention comprises an outer cylinder 10 and a front center portion of the outer cylinder.
Rotor 11 as an inner cylinder having a protruding engaging portion 22
And a cylinder lock main body 5 provided with the short cylinder fitting portion 15 of the outer cylinder head 12 formed at the distal end portion of the outer cylinder body in the locked state via the elastic locking ring 6, And the engagement
The hard cap 7 rotates in the circumferential direction of the outer cylinder head 12 together with the rotor 11 via the engaged portion 29 that engages with the portion 22. The hard cap 7 except for the key hole 20 of the rotor 11. 11 engaging portion 22 or the short tubular shape
The fitting portion 15 is entirely covered, and the hard cap 7
Is a small-diameter notch 31 for operation key penetration, which faces the key hole 20 of the rotor 11 of the cylinder lock body 5, and a pressed rod shape
A bulging surface wall portion 25 having a hardness that does not damage the rotor by a rod-shaped tool and a hard cap 7 that protrudes from the surface of the opening / closing door so that the tip end portion of the tool slides, and the short cap fitting portion
15 , the annular receiving groove 28 with which the locking ring 6 displaced when fitted in 15 is fitted, and the small-diameter cutout portion of the hard cap 7.
31 so that the keyhole 20 of the rotor 11 and the keyhole 20 of the rotor 11 are aligned with each other.
It has the engaged part 29 formed respectively.

In the above structure, the cylinder lock body 5
Is fitted into a fitting hole 3a of a lock handle 3 attached via a lock housing 2 so as to be substantially flush with the front surface 1a of the opening / closing door 1, and is swelled by carburizing and quenching through the fitting hole 3a. It is characterized in that only the surface wall portion 25 of the shape is projected.

[0008] The opening and closing door for a cylinder lock of the present invention, the outer
Engagement protruding from the center of the front surface of the cylindrical body 10 and the outer cylindrical body
The cylinder lock body 5A having the rotor 11 as the inner cylinder having the portion 22 and the short cylindrical fitting portion 15A of the outer cylinder head 12A formed at the tip of the outer cylinder are elastic. Outer fitting is performed in a locked state via the locking ring 6A, and the engaging portion 2
Outer together with the rotor 11 via the 2 and the engaged portion 29 for engaging
A hard cap 7A that rotates in the circumferential direction of the cylinder head 12A. The hard cap 7A is the engaging portion 22 of the rotor 11 or the short cylinder except the key hole 20 of the rotor 11.
The fitting portion 15A is entirely covered, and the hard cap 7
A is pressed against a small-diameter cutout 31 for operation key penetration which faces the key hole 20 of the rotor 11 of the cylinder lock body 5A .
From the cylindrical idle body 35 so that the tip of the rod-shaped tool slides.
A bulging shape surface wall portion 25A of the hardness rotor is not damaged by protruding and rod-like tool, a hard cap 7A the short
The annular receiving groove 28 with which the locking ring 6A displaced when fitted into the cylindrical fitting portion 15A engages, and the hard cap 7
The small-diameter cutout 31 and the keyhole 20 of the rotor 11 are aligned with each other.
The outer cylinder head 12A protruding from the peripheral wall portion 26A of the hard cap 7A and the opening / closing door 1A, respectively, which has the engaged portion 29 formed on the inner wall surface, is carburized and quenched. The cylindrical idling body 35 having the outer wall surface portion 35a is fitted in a locked state.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings. 1 to 11 show a first embodiment of the present invention. In the first embodiment, 1
Is an opening / closing door of a vending machine, and a locking device X is fixedly attached to the opening / closing door 1. As shown in FIGS. 1 and 2, a lock device X installed in a vending machine has a lock housing fixedly attached to the opening / closing door 1 so as to be substantially flush with the surface 1a of the opening / closing door 1. 2 and a lock handle 3 that is stored in the lock housing 2 such that the surface of the handle portion is the same as the surface of the lock housing, and that pops out from the lock housing 2 by a required amount when unlocked by a key operation. The lock handle 3 is combined with a cylinder-lock 4 which is stored so that the surface of the lock is substantially the same as the surface of the lock handle.

The present invention relates to the structure relating to the cylinder-lock 4, and is suitable when used via a lock handle 3 having a fitting hole 3a as shown in FIGS. 3 and 4, for example. Therefore, the configuration of the cylinder-lock 4 will be described in detail below.

As shown in FIG. 5, the cylinder lock 4 according to the present invention includes an outer cylinder and an engaging member which projects from the center of the front surface of the outer cylinder.
A cylinder lock main body 5 provided with a rotor as an inner cylinder having a joint, and a cylinder lock main body 5 is externally fitted to the head of the cylinder lock main body 5 via an elastic locking ring 6, and corresponds to a key operation. It is composed of a rotating hard cap 7.

Therefore, first, the cylinder lock body 5 will be described with reference to FIG. 5 or 7. Cylinder lock body 5
In the present embodiment, is composed of an outer cylindrical body 10 and a rotor 11 rotatably provided on the outer cylindrical body 10.

As shown in FIG. 7, the outer cylinder body 10 has an outer cylinder head portion 12 on the front end side and an outer cylinder neck portion 13 on the rear end side which is connected to the outer cylinder head portion 12. To be distinguished. A flange 14 is provided around the tip of the outer cylinder head 12, and the tip of the outer cylinder head 12 with the flange 14 as a reference has a short tubular fitting portion 15 with respect to the hard cap 7. Has become. A peripheral groove 16 is formed in the short tubular fitting portion 15. An annular groove 17 is formed in the outer cylinder neck portion 13 in the circumferential direction, but the annular groove 17 is provided in relation to a locking piece (not shown) and is not an essential part of the present invention. .

On the other hand, the rotor 11 has a keyhole 20 in the axial direction from the tip side toward the center thereof, and
A rotating rod (not shown) is fitted to the drive shaft portion 21 protruding rearward from the outer cylinder neck portion 13 of the outer cylinder body 10. Then, the short tubular fitting portion 15 of the outer tubular body 10 is attached to the tip of the rotor 11.
A plurality of projecting engagement portions 2 that slightly project from the front surface 15a of the
Two are provided. In the present embodiment, these protruding engagement portions 22 are symmetrically provided on the left and right of the keyhole 20 as shown in FIG. 5, and the shape thereof is, for example, a semicircular arc shape.

Next, the hard cap 7 will be described with reference to FIGS. Here, the “hard cap” refers to a cap-shaped member that is hardened by heat treatment so as not to be easily deformed by a commonly used rod-shaped tool (for example, a driver). In this embodiment, the hard cap 7 is carburized and quenched. The carburizing depth of the hard cap 7 is not particularly limited, but at least the hard cap 7 preferably has a carburized and quenched surface wall from the viewpoint of theft prevention.

However, the carburized and hardened surface wall portion 25 of the hard cap 7 is formed in a bulge shape in this embodiment. Therefore, the thief is the driver and the front wall 2
Even if you hit 5, it slips because of its hardness. Further, in this embodiment, a part of the peripheral wall portion 26 of the hard cap 7 is also carburized and quenched. Therefore, the hard cap 7
The outer wall surface is entirely carburized and quenched.

By the way, the hard cap 7 of this embodiment
Constitutes a part of the cylinder lock 4 as described above. Therefore, the hard cap 7 will be described in more detail. As shown in FIG. 6, reference numeral 27 is a circular fitting recess formed on the back side of the hard cap 7, and an annular receiving groove 28 is formed in the inner peripheral wall of the fitting recess 27.
As shown in FIG. 8, the annular receiving groove 28 is opposed to the circumferential groove 16 of the short tubular fitting portion 15 of the outer tubular body 10, and the receiving groove 28 and the circumferential groove 16 have an elastic locking ring. (C-shaped or U-shaped ring in this embodiment) 6 are fitted together. Therefore, the hard cap 7 is integrally engaged via the elastic locking ring 6. And hard cap 7
Is not easily disengaged from the cylinder lock body 5 via the locking ring 6 and is rotatable with the rotor 11 in the circumferential direction with respect to the outer cylinder body 10.

Reference numeral 29 is a plurality of recessed engaged portions formed on the inner wall surface of the fitting recess 27 in the vertical direction, and these recessed engaged portions 29 are the rotor 11 described above. Are engaged with the projection-shaped engaging portions 22 of FIG. Therefore, the shape of the recessed engaged portion 29 is also a semi-circular shape corresponding to that of the protruding engaging portion 22.

Further, reference numeral 30 is a large-diameter cutout portion into which a part of the knob portion 8a of the operation key 8 is inserted, as shown in FIG. To the fitting recess 27 on the back side. The reference numeral 31 designates the large-diameter cutout 30 and the fitting recess 2
7, and in the present embodiment, the keyhole 20 of the rotor 11
Is a small-diameter notch for penetrating the operation key, which always faces the.

In the above structure, the lock handle 3 of the lock device X is provided.
Before incorporating the cylinder lock 4 into the above, the hard cap 7 is externally fitted to the short tubular fitting portion 15 of the cylinder lock body 5 in advance. When the hard cap 7 is fitted into the short tubular fitting portion 15, the C-shaped or U-shaped elastic locking ring 6 is fitted into the receiving groove 28 of the hard cap 7 and the circumferential groove 16 of the short tubular fitting portion 15, respectively. Make an elastic engagement. Since the locking ring 6 is an elastic body, when the hard cap 7 is fitted, it is once deformed to the circumferential groove 16 side and then returned to the receiving groove 28 side, and the hard cap 7 is fixed to the cylinder lock body 5 as shown in FIG. Lock. Thus, when the hard cap 7 is elastically locked integrally with the cylinder lock body 5 via the locking ring 6, the projection of the cylinder lock body 5 on the fixed side is fixed to the recessed engaged parts 29, 29. The engaging portions 22, 22 just fit together, so that the hard cap 7 itself does not rotate by itself.
Therefore, the small-diameter cutout 31 for penetrating the operation key of the hard cap 7 is provided in the key hole 20 of the rotor 11 of the cylinder lock body 5.
And always facing each other.

Thus, the cylinder lock 4 of the present invention as described above is fitted into the fitting hole 3a of the lock handle 3 as shown in FIG. In this case, the bulging surface wall portion 25 of the hard cap 7 of the cylinder lock 4 slightly projects from the surface of the lock handle 3 or the fitting hole 3a. Since the bulging surface wall 25 of the hard cap 7 is carburized and quenched in this embodiment, a thief may now use a rod-shaped tool such as a screwdriver or a drill to remove the hard cap 7 from the cylinder lock body 5. Even if the hard cap 7 is broken or the large-diameter cutout 30 of the hard cap 7 is opened, the hard cap 7 is not easily broken or deformed. Further, even if the hard cap 7 is to be removed, the peripheral wall portion 26 of the hard cap 7 is substantially in the fitting hole 3a of the lock handle 3, and the carburized and hardened surface wall portion 25 thereof is a cone or a dome. Since the rod-shaped tool is formed to bulge, the hard cap 7 eventually functions as a protection member for the rotor 11 against thieves and unlocks the rotor 11 in addition to the regular operation key 8. It cannot be turned in any direction.
Therefore, as shown in FIG. 8, when the regular operation key 8 is inserted into the large-diameter cutout 30 of the hard cap 7 or the key hole 20 of the rotor 11 and rotated in the unlocking direction, the hard cap 7 rotates together with the rotor 11.

[0022]

Embodiment First, in the first embodiment, the positional relationship between the engaging portion 22 and the engaged portion 29 may be reversed. Further, a peripheral groove 16 is formed in the short cylindrical fitting portion 15 of the outer cylinder head 12 of the cylinder lock body 5, while the fitting recess 27 of the hard cap 7 which is externally fitted to the short cylindrical fitting portion 15 is formed. An annular receiving groove 28 is formed on the inner peripheral wall of the cylinder lock body 28 so as to face the peripheral groove 16, and the hard cap 7 engages with both the peripheral groove 16 and the receiving groove 28 via an elastic locking ring 6 to form a cylinder lock body 5 It is integrally locked to the short tubular fitting part 15 of
You can also do it.

That is, when the hard cap 7 is externally fitted to the cylinder lock body 5, the circumferential groove 16 formed in the short cylindrical fitting portion 15 of the cylinder lock body 5 is fitted into the peripheral edge on the back side of the hard cap 7. It is also possible to cause the hard cap 7 to swivelly engage the short cap fitting portion 15 so that the portion can rotate.

Therefore, it suffices for the hard cap 7 to be externally fitted to the outer cylinder head 12 of the cylinder lock body 5 in a locked state and to rotate in response to the operation of the operation key 8.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the description of the second embodiment, the same components as those of the first embodiment will be designated by the same or similar reference numerals, and redundant description will be omitted.

In the second embodiment, as shown in FIG. 12, for example, a cylinder lock 4A is fixedly attached to an opening / closing door 1A of a vending machine, and an outer cylinder of a cylinder lock body 5A constituting the cylinder lock 4A. The head 12A is the opening / closing door 1A.
2 shows an embodiment projecting from the surface 1a of the.

In such an embodiment as well, the hard cap 7A has the short tubular fitting portion 15 of the outer tubular head portion 12A.
It is the same as in the first embodiment in that it is externally fitted to A through the elastic locking ring 6A in a locked (possible) state.

However, in the second embodiment, the cylindrical idle body 35 having the trapezoidal outer wall surface portion 35a and the annular engaging portion 36 formed at the inner end portion of the inner peripheral wall is the hard cap 7A. It is different from the first embodiment in that it is externally fitted to the peripheral wall portion 26A and the outer cylinder head 12A protruding from the cylinder lock body 5A. Then, the outer wall surface portion 35 of the cylindrical idle body 35.
Similarly to the bulged surface wall portion 25A, a is also carburized and quenched. Even with this configuration, the same problem as that of the specified invention can be achieved.

[0029]

As is clear from the above description, the present invention has the following effects. (1) It is structurally simple. Therefore, it can be manufactured at low cost. (2) Operability is good even when a key is inserted. For example, the operation key can be immediately inserted into the key hole of the rotor and the unlocking operation can be performed without performing a troublesome operation such as removing the hard cap or opening the hard cap. (3) Since it is extremely difficult to break the hard cap with the rod-shaped tool, the rotor can be sufficiently protected. (4) It is easy to attach the hard cap to the cylinder lock body, and the front end of the cylinder lock (the front end of the inner cylinder and the outer cylinder) is entirely covered with "one part (hard cap)". You can In other words, hard
The cap is formed on the outer cylinder head 12 of the cylinder lock body 5.
It is a fitting method for the short tubular fitting portions 15 and 15A.
The hard cap onto the tip of the cylinder lock.
It can be fitted with a switch and can cover the inner and outer tips. (5) Since the carburized and hardened surface wall is bulged to form a cone or dome, the tip of the rod-shaped tool slides easily, and in the end, the hard cap functions as a rotor anti-corrosion member against thieves. However, the rotor cannot be turned in the unlocking direction except by using the proper operation key.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 11 show a first embodiment of the present invention.
This is an example. 12 to 14 show a second embodiment of the present invention.

FIG. 1 is an explanatory diagram showing an embodiment of the invention using a first embodiment.

FIG. 2 is an explanatory view showing an embodiment of the invention using the first embodiment.

FIG. 3 is an explanatory view showing a relationship with a lock handle in FIGS. 1 and 2.

FIG. 4 is an explanatory view showing a relationship with a lock handle in FIGS. 1 and 2.

FIG. 5 is an exploded perspective view of the present invention.

FIG. 6 is a perspective view of the main part (hard cap) as viewed from the back side.

FIG. 7 is a schematic cross-sectional explanatory view of a main part and the like in a disassembled state.

FIG. 8 is an explanatory diagram showing a state where an operation key is inserted.

FIG. 9 is a front view of a main part (hard cap).

10 is a sectional view taken along line 10-10 of FIG.

FIG. 11 is a rear view of the main part (hard cap).

FIG. 12 is an explanatory view showing an embodiment of the invention using the second embodiment.

FIG. 13 is a schematic explanatory view of a state in which a main part (hard cap) is separated.

FIG. 14 is a schematic explanatory view of a state in which main parts (hard caps) are combined.

[Explanation of symbols]

X ... Lock device, 1 1A ... Open / close door, 2 ... Lock housing, 3 ... Lock handle, 4 4A ... Cylinder lock, 5 5A ... Cylinder lock body, 6, 6A ... Locking ring, 7, 7A ... Hard cap, 8 ... Operation keys, 10 ... Outer cylinder, 11 ... Rotor, 1
2, 12A ... Outer cylinder head, 13 ... Outer cylinder neck, 15, 15A
... Fitting part, 20 ... Key hole, 22 ... Engaging part, 25, 25A
... front surface wall portion, 26, 26A ... peripheral surface wall portion, 27 ... fitting recess, 28 ... annular receiving groove, 29 ... engaged portion, 30 ... large diameter cutout portion, 31 ... small diameter cutout portion, 35 ... cylinder State idle body.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 15/00 E05B 15/16 E05B 65/02

Claims (3)

(57) [Claims] 1. An outer cylinder body 10 and a front center portion of the outer cylinder body.
As an inner cylinder having an engaging portion 22 protruding from the rotor
The cylinder lock body 5 provided with 11 and the short cylindrical fitting portion 15 of the outer cylinder head 12 formed at the distal end of the outer cylinder body are externally fitted to each other via the elastic locking ring 6 in a locked state. And the above
The rotor 11 is engaged via the engaged portion 29 that engages with the engaging portion 22.
Together with a hard cap 7 that rotates in the circumferential direction of the outer cylinder head 12, the hard cap 7 except for the keyhole 20 of the rotor 11 and the engaging portion 22 of the rotor 11 or the short cap.
The hard cap 7 entirely covers the cylindrical fitting portion 15 , and the hard cap 7 has a small-diameter notch 31 for operation key penetration which faces the key hole 20 of the rotor 11 of the cylinder lock body 5, and a pressed rod.
Protruding from the surface of the door so that the tip of the tool can slide
And and a bulge-shaped surface wall portion 25 of hardness rotor is not damaged by the rod-like tool, the short tubular fitting the hard cap 7
The annular receiving groove 28 with which the locking ring 6 displaced when fitted to the portion 15 engages, and the small-diameter cutout of the hard cap 7.
The inner wall surface so that the part 31 and the keyhole 20 of the rotor 11 are aligned with each other.
A cylinder lock for an opening / closing door, each of which has the engaged portion 29 formed in the . 2. The cylinder lock body 5 according to claim 1.
Is fitted into a fitting hole 3a of a lock handle 3 attached via a lock housing 2 so as to be substantially flush with the front surface 1a of the opening / closing door 1, and is swelled by carburizing and quenching through the fitting hole 3a. Cylinder lock for doors, characterized in that only the surface wall portion 25 in the shape of a protrusion projects. 3. An outer cylindrical body 10 and a front center portion of the outer cylindrical body.
As an inner cylinder having an engaging portion 22 protruding from the rotor
A cylinder lock main body 5A provided with 11 and a short cylindrical fitting portion 15A of an outer cylinder head 12A formed at a tip portion of the outer cylindrical body are externally fitted in a locked state via an elastic locking ring 6A. And a hard cap 7A that rotates in the circumferential direction of the outer cylinder head 12A together with the rotor 11 via the engaged portion 29 that engages with the engaging portion 22. 7A
Is an engaging portion of the rotor 11 except for the keyhole 20 of the rotor 11.
22 or the short tubular fitting portion 15A is entirely covered, and the hard cap 7A has a small-diameter cutout portion 3 for operation key penetration that faces the key hole 20 of the rotor 11 of the cylinder lock body 5A.
1 and the cylinder so that the tip of the pressed rod-shaped tool slides.
The bulging surface wall portion 25A protruding from the cylindrical idle body 35 and having a hardness that does not damage the rotor by the rod-shaped tool is engaged with the locking ring 6A displaced when the hard cap 7A is fitted into the short tubular fitting portion 15A. an annular receiving groove 28, Ha
Key of the rotor 11 and the small-diameter cutout 31 of the magnetic cap 7
The outer cylinder head 12A protruding from the peripheral wall portion 26A of the hard cap 7A and the opening / closing door 1A respectively has the engaged portion 29 formed on the inner wall surface so that the holes 20 coincide with each other. A cylinder lock for an opening / closing door, characterized in that the cylindrical idle body 35 having a carburized and quenched outer wall surface portion 35a is fitted in a locked state.