JPH10311172A - Locking and unlocking display device in cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components for a locking and unlocking device to curtail a cost and to settle such a problem as a case cover is slipped off. SOLUTION: A flange section 12 for covering part or all of the front of a fixed exterior cylinder 2 is provided at the front end section of an interior cylinder 1. A locking display 21a and an unlocking display 21b are made by moving their positions angle-wise for the rotational direction of the interior cylinder 1 so that they are opposed to the flange section 12 of the interior cylinder 1 at the front side of the fixed exterior cylinder 2. An opening section 13 for making it possible to selectively see the locking display 21a or the unlocking display 21b by a locking position or an unlocking position ocupied with the interior cylinder 1 is provided to the flange section 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lock / unlock display device for a cylinder lock which can be seen at a glance from a lock / unlock state of a cylinder lock provided on a drawer of a cabinet, a door of a rocker or a door of an entrance. About.

2. Description of the Related Art As a conventional lock / unlock display device of this type, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 9-25575.

One locking and unlocking display device disclosed in the publication has a cylinder head rotatable by 180 ° with respect to a lock body, a display plate whose surface is colored with two different colors, and a surface of the display plate. A case cover having an opening exposing a part of the case cover is attached in order, and the display plate or the case cover is rotated with the rotation of the cylinder head, thereby locking or unlocking according to the color of the display plate visible from the opening of the case cover. The state can be confirmed,
Another locking / unlocking display device has a cylinder head colored around the keyhole with two different colors so as to be rotatable 180 ° with respect to the lock body, and has an opening for exposing the coloring of the cylinder head. When the case cover is attached to the lock body and the cylinder head is rotated, the locked or unlocked state can be confirmed by the color of the colored portion seen from the opening of the case cover.

However, all of these conventional devices require a case cover having an opening, and the case cover is provided so as to be exposed on the front surface of the lock. There are problems that the number is large and the structure is complicated, and that the other one is that the key tip or body may be caught by the case cover and fall off.

[0004]

SUMMARY OF THE INVENTION A lock / unlock display device for a cylinder lock according to the present invention aims at solving all of the above problems by removing a case cover which is a problem in the conventional device. It is a proposal. That is, the present invention has been proposed for the purpose of reducing the number of parts and reducing the cost, and solving the problem of the case cover falling off.

[0005]

In order to achieve the above object, the present invention relates to a cylinder lock having a rotatable inner cylinder into which a key is inserted and a fixed outer cylinder disposed therearound; The front end of the fixed outer cylinder is provided with an integral flange that covers part or all of the front surface of the fixed outer cylinder; the front of the fixed outer cylinder faces the flange of the inner cylinder to display the indication of locking and unlocking. Applying the position shifted angularly with respect to the rotation direction of the inner cylinder; and selectively displaying a lock indication or an unlock indication on the flange portion depending on a locked position or an unlocked position occupied by the inner cylinder. It is assumed that an opening is provided in order to achieve this.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to two embodiments shown in the drawings. 1 and 2
FIGS. 3 to 5 show a first embodiment of the present invention.
Examples are shown respectively.

In the first embodiment shown in FIGS. 1 and 2,
Reference numeral 10 denotes a drawer of a cabinet to which the cylinder lock is attached, a door of a rocker, a door of an entrance and the like.

As the lock on which the present invention is embodied, if it is a cylinder lock, any kind of lock such as a disk cylinder lock, a rotary disk cylinder lock, a pin cylinder lock or a magnetic tumbler cylinder lock can be adopted.

The illustrated cylinder lock is a disk cylinder lock, and includes a rotatable inner cylinder 1 having a key hole 11 into which a key is inserted, and a fixed outer cylinder 2 arranged around the inner cylinder.

A fixed outer cylinder 2 fixed to the mounting object 10 and having a rectangular, circular or other arbitrary cross section.
May be an outer cylinder that directly holds the rotatable inner cylinder 1 as in the illustrated example, or a mounting cylinder that is fixedly mounted directly around the outer cylinder or with an interposed spacer cylinder. There may be.

In FIG. 1, reference numeral 3 denotes a disk tumbler movably mounted in the inner cylinder 1 and urged by a tumbler spring (not shown). Reference numeral 4 denotes a state where the disk tumbler penetrates a rear portion of the fixed outer cylinder 2. The inserted dead bolt itself or a linking member linked to the dead bolt. Although not shown, the tail piece of the inner cylinder 1 is linked directly or indirectly via a cam piece or the like.

In the cylinder lock in which the present invention is embodied, the positions of the inner cylinders in the locked state and the unlocked state are angularly displaced from each other in the rotational direction, that is, the angular positions are different.

In other words, in the cylinder lock to which the present invention is applied, in the locked state and the unlocked state, the position where the key (duplicate key) is inserted and removed is angularly, for example, 90 °, 1 °.
A structure with a deviation of 80 ° or 270 ° is employed.

In the cylinder lock shown in FIG.
1A is in the locked state, and the position in FIG. 1C is in the unlocked state.
It is off by 0 °.

In the present invention, an integral flange 12 is provided at the front end of the inner cylinder 1 so as to cover a part or the whole of the front surface of the fixed outer cylinder 2. Is provided with an opening 13 formed as a notch or a hole in a part of the circumference. The front shape of the opening 13 can be an arbitrary shape such as an arc or a circle.

In the present specification, the term "inner cylinder" includes one in which a key guide is integrally provided at a front portion of the inner cylinder. That is, the flange portion 12 may be provided on the key guide portion.

On the other hand, a lock indication 21a and an unlock indication 21b are provided on the front surface of the fixed outer cylinder 2 so as to face the back surface of the flange portion 12 of the inner cylinder 1 in an angular manner with respect to the rotation direction of the inner cylinder 1. To each other.

The indication 21 of locking and unlocking can be represented by colors, letters and / or symbols, etc.
May be provided directly as in the first embodiment, or may be provided indirectly with a display panel, for example, as in a second embodiment described later.

The indication 21 of the lock / unlock shown in FIG. 1 and FIG.
More specifically, the front surface of the fixed outer cylinder 2 is represented by being colored in two colors in an annular shape, and half of it is indicated by a lock indication 21.
a is drawn with, for example, red printing, and the other half is drawn with, for example, blue printing as an unlocking display 21b. As another coloring means, painting or the like can be used.

In the figure, one of the lock indications 21 is shown on the lock indication 21 to make it easy to distinguish between lock and unlock.
"a" is indicated by cross hatching, and the other unlock indication 21b is indicated by a number of dots.

The operation of the lock / unlock display device according to the first embodiment of the present invention having the above-described structure will be described below.

In the locked cylinder lock shown in FIG. 1A, the lock indication 21a on the front surface of the fixed outer cylinder 2 is exposed through the opening 13 of the flange portion 12 of the inner cylinder 1 so that it can be used. The person can see at a glance that the lock is locked.

In FIG. 1A, a duplicate key (not shown) is inserted into the keyhole 11, and the inner cylinder 1 is turned by, for example, 180 ° in the direction of arrow P.
When the cylinder lock is rotated and pulled out, as shown in FIG.
Is displaced to the left, for example, and the restrained state of the mounting object 10 is released.

At this time, the opening 13 of the flange portion 12 also moves by 180 ° due to the rotational displacement of the inner cylinder 1, and the unlocking indication 21 b of the fixed outer cylinder 2 can be seen from the opening 13. Even in this state, the user can see at a glance that the lock is unlocked, and can prevent the user from forgetting to lock the key when performing the next lock.

To return from the unlocked state of FIG. 1C to the locked state of FIG. 1A, insert the duplicate key and rotate the inner cylinder 1 by 180 ° in the direction of arrow Q in the opposite direction to pull it out. I just need. The opening 13 of the flange portion 12 of the inner cylinder 1 returns to the original angular position (FIG. 1A), and a lock indication 21a appears on the opening 13.

Next, a second embodiment of the present invention shown in FIGS. 3 to 5 will be described. 1 and 2 in the second embodiment.
Since the members or parts indicated by the same reference numerals as those in the first embodiment are equivalent members or parts, only different points will be described here to avoid duplication of the description.

In the second embodiment, the indication of locking and unlocking is indirectly provided on the front surface of the fixed outer cylinder 2 by means of a separate display plate 21 having an annular shape.

As shown in FIG. 5, the display plate 21 includes two engaging leg pieces 21c and 21d integrally extending rearward from the annular front plate portion as a whole, and is symmetrical. It is formed by assembling a pair of divided pieces 21a and 21b.

The pair of partial pieces 21a and 21b are formed by molding a polypropylene or other polymer material containing a colored portion such as a coloring material of a different color, and one of the partial pieces 21a is, for example, a red lock. The other part 21b constitutes, for example, a blue unlocked display.

When a translucent or transparent polymer material containing a phosphorescent component in addition to a coloring component is used as a polymer material for forming a pair of partial pieces, when the apparatus of the present invention is used in darkness, The light emission of the display plate 21 formed by the pair of partial pieces makes it easier to see the lock / unlock indications 21a and 21b viewed through the opening 13 of the inner cylinder 1, which is preferable.

The two partial pieces 21a and 21b are formed by integral projections 21e and fitting holes 21f provided at respective joints.
Are fitted into the fitting holes 21f and the projections 21e of the opposing partial pieces, and as a whole, the display panel 21 has a rear surface side of its front plate portion fixed as shown in FIGS. Pressing against the front surface of the cylinder 2
c, 21d are provided on the front surface of the fixed outer cylinder 2,
2 and fixed to the fixed outer cylinder 2 by locking.

If necessary, an adhesive can be additionally provided between the partial pieces 21a and 21b of the display panel 21 and between the display panel 21 and the fixed outer cylinder 2.

In FIG. 4, reference numerals 23, 23 denote projections integrally provided on the front surface of the fixed outer cylinder 2, and these projections 23
Plays a role in preventing the entire display panel 21 from slipping together with the engaging legs 21c and 21d.

The operation of the locking and unlocking display device of the second embodiment is similar to that of the above-described locking and unlocking display device of the first embodiment, and a description thereof will be omitted.

The display panel 21 in the second embodiment differs from printing and painting in that not only the surface is colored but also the entire surface contains a coloring component. Locking and unlocking indication 2 even if part is worn
There is an advantage that the display function is exhibited for a long period without peeling of 1a and 21b.

[0036]

The locking / unlocking display device according to the present invention described above is provided in a conventional device regardless of whether it has a function of easily discriminating the locking / unlocking state of the cylinder lock visually. Since the case cover is not required, the cost can be reduced by reducing the number of parts, and the problem of the case cover falling off can be solved.

[Brief description of the drawings]

1A and 1B are views showing a first embodiment of a lock / unlock display device for a cylinder lock according to the present invention, wherein FIG. 1A is a front view in a locked state, FIG. 1B is a partial longitudinal plan view thereof, and FIG. It is a front view in a lock state.

FIG. 2 is a front view showing the fixed outer cylinder removed from the lock / unlock display device of the first embodiment in FIG. 1;

3A and 3B are views showing a second embodiment of a lock / unlock display device for a cylinder lock according to the present invention, wherein FIG. 3A is a front view in a locked state, FIG. 3B is a partial longitudinal plan view thereof, and FIG. It is a front view in a lock state.

FIG. 4 is a front view showing the fixed outer cylinder removed together with the display plate from the locking and unlocking display device of the second embodiment in FIG. 3;

5 (A) is a perspective view, FIG. 5 (B) is a front view, FIG. 5 (C) is a plan view, and FIG. 5 (D) is a view showing only the display plate removed from the locking and unlocking display device of the second embodiment of FIG. Is an exploded front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder 12 Flange part 13 Opening 2 Fixed outer cylinder 21a Lock indication 21b Unlock indication

Claims (1)

[Claims] 1. A cylinder lock comprising a rotatable inner cylinder into which a key is inserted and a fixed outer cylinder disposed around the inner cylinder; a front end of the inner cylinder covers a part or all of the front surface of the fixed outer cylinder. Providing an integral flange portion; displaying a lock indication and an unlock indication on the front surface of the fixed outer cylinder so as to face the flange portion of the inner cylinder so as to be angularly displaced with respect to the rotation direction of the inner cylinder. And the flange is provided with an opening for selectively displaying a lock indication or an unlock indication depending on whether the inner cylinder occupies a locked position or an unlocked position. Lock / unlock display for cylinder locks.