JPH11193656A - Lock/unlock indicator for cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the area of the indication part of a lock/unlock indicator for a cylinder lock and prevent the degradation of indicating of function of the indication part, if worn. SOLUTION: A pair of semicircular indication rings 3a, 3b with different colors are joined to each other in an annular shape and in one unit to be mounted to the outer periphery at the outer end of an inner cylinder 1 of a cylinder lock. A case cover which has the bottom provided with a shallow cup shaped opening 42 to see the outer end face of the inner cylinder and an indication opening 43 to see the indication ring is mounted at the front end of an outer cylinder 2 of the cylinder lock so that either of the indication rings can be selectively seen from the indication opening of the case cover, depending on the locked/unlocked condition of the cylinder lock when locked/unlocked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking / unlocking state of a cylinder lock provided on a drawer of a cabinet, a door of a locker or a door of an entrance and the like, at a glance from a position at a certain distance without touching with a hand. The present invention relates to an improved lock / unlock display device for a cylinder lock.

[0002]

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.

[0003] 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 colored with two kinds of colors different from the surface, and a display plate of the display plate. A case cover having an opening for exposing a part is sequentially attached, 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 seen from the opening of the case cover. The lock status can be checked.

Further, another locking / unlocking display device has a cylinder head having a keyhole periphery colored in two different colors provided so as to be rotatable by 180 ° with respect to a lock body, and a colored portion of the cylinder head is provided. A case cover having an opening to be exposed is covered and attached to the lock body, and by rotating the cylinder head, the locked or unlocked state can be confirmed by the color of the colored portion visible from the opening of the case cover. Things.

[0005]

However, in these conventional devices, the coloring portion for indicating the locking / unlocking state is limited to the size of the front end face of the cylinder head. Has a small area of the colored part, so it is difficult to see from a distance away,
There is a problem that it is difficult to distinguish a difference in coloring in a dark environment such as in the evening or at night.

Further, the colored portion surface and the inner surface of the case cover are opposed to each other, and the cylinder portion is worn by prolonged use due to the backlash of the various portions due to long-term use, and the colored portion is peeled off to release the unlock. It is also assumed that confirmation cannot be performed.

Therefore, the locking / unlocking display device for a cylinder lock according to the present invention eliminates the limitation on the size of the colored portion and prevents peeling of the colored portion due to abrasion between the colored portion and the case cover. It has been proposed with the primary purpose of doing so.

[0008]

In order to achieve the above-mentioned object, the invention according to the first aspect of the present invention is directed to a cylinder lock inner cylinder in which a pair of semi-circular display rings of different colors are joined in a ring shape and integrally. At the front end of the outer cylinder of the cylinder lock, the front end of the cylinder lock has a shallow cup-shaped case cover with an opening on the bottom surface for viewing the outer end surface of the inner cylinder and a display opening for viewing the display ring. When the cylinder lock is locked or unlocked, one of the display rings is selectively made visible through the display opening of the case cover according to the state of the lock and unlock.

The invention described in claim 2 is the first invention.
In the invention described in the above, a notch is formed at one end of the inner peripheral edge of each display ring, and the display ring is formed into an annular shape so that these notches are joined to each other. A hook is formed to protrude in the radial direction, and the hook is engaged with the notch.

Further, according to the present invention, a notch is formed at both ends of the inner peripheral edge of the display ring so that each of the pair of display rings has the same shape, and a mold for manufacturing the display ring is provided. It is characterized in that it can be completed with one type.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described based on embodiments shown in the drawings. In FIG. 2, reference numeral 10 denotes a drawer of a cabinet, a door of a locker, a door of an entrance or the like, which is an object to which a cylinder lock is attached.

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

The illustrated cylinder lock is a disk cylinder lock, and includes a rotatable inner cylinder 1 having a key hole 12 into which a key is inserted, and a fixed outer cylinder 2 disposed around the inner cylinder.

The outer cylinder 2 fixed to the mounting object 10 and having a rectangular, circular or other arbitrary cross-sectional shape is an outer cylinder which directly holds the rotatable inner cylinder 1 as shown in the figure. It may be a mounting cylinder that is fixedly mounted directly around the outer cylinder or with an interposition of a spacer cylinder.

In FIG. 2, reference numeral 5 denotes a disk tumbler movably mounted in the inner cylinder 1 and urged by a tumbler spring (not shown), and reference numeral 6 denotes a state where the disk tumbler penetrates a rear portion of the outer cylinder 2. The 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.

The cylinder lock to which the present invention is applied is configured such that the positions of the inner cylinders in the locked state and the unlocked state are angularly displaced from each other in the rotation 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 °.
What is shifted like 80 degrees or 270 degrees is adopted.

An arcuate hook 11 is formed at one end of the outer periphery of the front end of the inner cylinder 1. A pair of semicircular display rings 3a are held by the hook in the circumferential direction.
3b is mounted.

The display rings 3a and 3b are combined, joined and integrated to form an annular ring on the outer periphery of the inner cylinder 1.

A notch 31 is formed at one end of the inner peripheral edge of each of the pair of display rings 3a and 3b.
When the inner cylinder 1 is rotated by the locking / unlocking operation, the torque is reliably transmitted to the display ring.

In order to integrate the display rings 3a and 3b, the contact surface between the display ring and the inner cylinder and the contact surface between the display rings may be bonded with an adhesive, or a pin may be inserted between the contact surfaces. This is performed by a known method such as caulking.

As the material of the display rings 3a and 3b, materials having different colors from each other are employed. For example, the display ring 3a is made of blue plastic, and the display ring 3b is made of red plastic. By doing so, the display function of locking and unlocking described later becomes prominent.

A circular groove 21 concentric with the center axis of the cylinder lock is formed on the outer end surface of the outer cylinder 2, and four rectangular recesses 22 are formed radially outside the circular groove 21. ing.

On the other hand, the case cover 4 attached to the front end of the cylinder lock has a shallow cup shape as a whole, and has a circular opening 42 and an opening 42 on its bottom surface sufficient to allow the front end surface of the inner cylinder 1 to face. A fan-shaped display opening 43 is formed at one end on the outside, and four seat plates 41 are formed radially at the edge of the opening.

The case cover 4 includes a display ring 3a,
After the 3b is integrated and mounted on the inner cylinder 1, it is mounted on the front end surface of the outer cylinder 2 so as to cover the inner cylinder.

At this time, the opening edge of the case cover 4 is engaged with the above-described circular groove 21 of the outer cylinder, and the seat plate 41 is
2 and is mounted.

As shown in FIG. 5, a pin-shaped small projection 23 is provided at the opening of the recess 22 so as to protrude therefrom.
When the small protrusion 23 is pressed or hit from the outside after the first protrusion 1 is engaged with the concave portion 22, the small protrusion is crushed and the concave portion 2
2 undergoes plastic deformation, and the seat plate 41 is fixed to the end face of the outer cylinder.

In the cylinder lock provided with the locking and unlocking display device configured as described above, the display opening 43 of the case cover 4 is formed at a position facing the outer surfaces of the display rings 3a and 3b. One of the outer surfaces 3a and 3b faces the display opening 43.

In this embodiment, the unlocked state is shown in FIG. 3, and at this time, the end face of the blue display ring 3a is
Visible through 3.

When the key is inserted into the keyhole 12 at the position shown in FIG. 3 and the key is turned by 180 ° to lock it, the state shown in FIG.
b also rotates 180 °, so that the end face of the red display ring 3 b can be seen through the display window 43. Note that in FIGS. 3 and 4, the lattice pattern shows blue, and the spot pattern shows red.

Thus, by checking the color of the display ring through the display window 43, it is possible to confirm at a glance the state of locking and unlocking.

In the above description, the display ring 3
Although the color of a is blue and the color of the display ring 3b is red, the color of the display ring is not limited to these colors, and it goes without saying that the color can be appropriately selected according to the user's preference.

According to the third aspect of the present invention, the display ring 3
The present invention is different from the first and second aspects in that a notch 31 is formed at both ends of a and 3b.

According to the first aspect of the present invention, the notch 31 is formed only at one end of the display rings 3a and 3b. Therefore, it is necessary to use dedicated molds for both of them at the time of manufacture.

On the other hand, the display rings 3a and 3b used in the second aspect of the present invention have exactly the same shape except for the material properties, and therefore, both can be manufactured by one mold. Has advantages. In this case, one of the cutouts 31 formed at both end portions does not engage with the hook and merely serves as a space portion, so that there is no problem in use.

[0037]

According to the lock / unlock display device for a cylinder lock according to the present invention described above, the display ring for displaying the locked / unlocked state is mounted on the outer periphery of the inner cylinder, so that the size of the display ring is increased. There is no restriction on the (outer shape), and it can be increased as needed. Particularly, application to a small cylinder lock has a great effect.

Further, since the pair of semicircular display rings are made of materials having different colors, even if the end surfaces of the display ring and the inner surface of the case cover come into contact with each other and wear occurs, a change in color occurs. In addition, since the display function of locking and unlocking is not lost, there is an effect that the device can be used semi-permanently.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing the configuration of a locking and unlocking display device in a cylinder lock according to the first embodiment.

FIG. 2 is a partial cross-sectional plan view showing a state where the components shown in FIG. 1 are assembled.

FIG. 3 is a front view showing the unlocked state of the cylinder lock.

FIG. 4 is a front view showing a locked state of the cylinder lock.

FIG. 5 is a sectional view of a concave portion for attaching a seat plate of a case cover.

FIG. 6 is a perspective view of a display ring according to the invention described in claim 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder 11 Tsuk 2 Outer cylinder 3a Display ring 3b Display ring 31 Notch 4 Case cover 43 Display opening

Claims (3)

[Claims] 1. A pair of semi-circular display rings of different colors are joined annularly and integrally to be mounted on the outer periphery of the outer end of an inner cylinder of a cylinder lock. Attach a case cover that has a cup-shaped bottom with an opening on the bottom that allows you to look into the outer end surface of the inner cylinder and a display opening that allows you to look into the display ring. A lock / unlock display device for a cylinder lock, wherein one of the lock / unlock devices is selectively visible through a display opening of a case cover. 2. A notch is formed at one end of an inner peripheral edge of each of the display rings, and the display ring is formed into an annular shape so that these notches are joined to each other. 2. The lock / unlock display device for a cylinder lock according to claim 1, wherein a hook is formed to project in a radial direction, and the hook is engaged with the notch. 3. The locking and unlocking display device for a cylinder lock according to claim 2, wherein notches are formed at both ends of an inner peripheral edge of the display ring so that each of the pair of display rings has the same shape.