JPH06307176A - Locking device for shutter door - Google Patents

Abstract

PURPOSE:To make speedy locking and unlocking by pivoting a fixed piece fixing an unlocking lever of a locking device for a shutter door to an unlocking position on the foundation, making the front end thereof sink into a recessed part of the unlocking lever, and freeing it from the recessed part with a releasing lever. CONSTITUTION:A left link 14 and a left lock lever 16 and a right link 15 and a right lock lever 17 are pulled-in toward the foundation 10 by turning an unlocking lever 13 with a pivot shaft 11 as the center counter clockwise from a locking position of a shutter door, and the front ends of both lock levers 16 and 17 are ridded of striking plates S to make it possible to open the shutter door. After that, a component fixing the unlocking lever 13 to an unlocking position is such that the front end 1' of the fixed piece 1 is sunk into the recessed part 6 of the unlocking lever 13 to prevent the movement of the unlocking lever 13, and the unlocking lever 13 is fixed to the unlocking position. Then, in the case the shutter door is opened to lock, a fixed releasing lever 4 is turned clockwise with a pivoting point C as the center, the front end 1' is ridded of the recessed part 6 to return, and both right and left lock levers 16 and 17 are reentered into the striking plates S to lock.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter door locking device suitable for use in a shutter door used for domestic shutters and the like.

[0002]

2. Description of the Related Art In the case of shutters for residential use, wooden sliding doors were stored in a door pocket in the old days, and when they were used, they were pulled out of the door bag and moved to start empty, after which the material was changed to metal and they were similar to wooden doors. Is being used.

Furthermore, in recent years, shutter doors in which metal or synthetic resin slats are connected are used as rain doors,
With the slats suspended at one end and the other end running in the guide groove, the shutter can be moved by horizontal pulling, or the shutter that has been housed on the kamoi can be pulled down vertically and used as a shutter. Has become popular.

As described above, when the shutter door is used as a shutter, it tends to project outward from both left and right ends of the slat in parallel with the slat (at right angles to the moving direction of the shutter) at the leading edge of the shutter door. The lock rod is provided with the lock lever, and when the closing of the shutter door is completed, the tip of the lock rod is inserted into the receiving seat installed inside the guide groove of the shutter door to lock the lock rod.

[Problems to be Solved by the Invention]

The structure of such a conventional locking device is as shown in FIG. 8 and FIG.
One end of the left link 14 and one end of the right link 15 are also pivotally attached to the unlocking lever 13 pivotally attached to 0. The pivot points of these two links 14 and 15 with respect to the unlocking lever 13 are located equidistant from the pivot axis 11, and the two pivot points are indicated by A and B in the figure.

A left lock rod 16 is connected to the left link 14 and a right lock rod 17 is connected to the right link 15. A left spring is provided between each link 14 and 15 and the base plate 10. 18 and the right spring 19 are stretched,
The left and right springs 18 and 19 urge all parts to maintain the locked position in FIG.

The conventional product of this type has left and right springs 1
Since the left and right links 14 and 15 and the left and right locking rods 16 and 17 are constantly urged by 8 and 19 so as to project to the locking position, for example, as shown in FIG.
By making the tip of 17 the inclined surface T, the locking rods 16, 1 are attached to the receiving seat S installed inside the guide groove G of the slat.
The tip of 7 slides in, and so-called automatic locking can be performed.

Therefore, in order to unlock the shutter door locked by such a conventional device, the unlocking lever 13 is rotated in the counterclockwise direction around the pivot 11 in FIG. 8 to unlock as shown in FIG. The left and right links 14, 15 pivotally attached to the lever 13 are moved to move the left and right lock rods 16, 1,
7 is to escape from the seat S, but if the unlocking lever 13 is released in that state, the left and right locking rods 16, 1
7 is again projected by the action of the left and right springs 18 and 19, and the tip of the locking rod projects into the receiving seat S, so that the door cannot be opened smoothly.

Therefore, in order to open the vertical shutter door, the unlocking lever 13 is moved to the position shown in FIGS. 8 to 9 with one hand, and the shutter door is raised with the other hand while maintaining this state. There is no choice but to follow the procedure of letting it. It is extremely inconvenient in daily life to operate the lock with one hand and to open the door with the other hand at the same time as the convenience of the lock device, and once the lock device is unlocked, it can be locked. It is desirable to automatically continue the unlocked state until the operation of is performed.

[Means for Solving the Problems]

As means for operating the locking rod for locking,
In view of the fact that the type using the unlocking lever as described above is the cheapest and most effective, the engine part of this type of lock will be followed as it is, and in the present invention, the function of maintaining the unlocked state in this type of lock is used. We decided to solve the problem by adding.

What is required for the unlocking maintaining function is that the unlocking lever automatically operates when it moves to the unlocking position, fixes the unlocking lever at that position, and unlocks it in one operation if necessary. It is desirable to be able to shift to the locked state after unlocking the lock.

What is needed for that purpose is a fixing piece for pressing and fixing the unlocking lever at the locking position. Such a fixing piece is movably installed on the base of the locking device, and the unlocking lever is provided. When is moved to the unlocking position, the fixing piece is recessed into the recess that is in contact with the unlocking lever to prevent the unlocking lever from further moving.

Further, the fixing piece in the recess can be easily pushed out of the recess by the operation of the fixing release lever pivotally attached to the unlocking lever, so that the unlocked state can be easily released.

【Example】

Referring to the drawings, an embodiment of the present invention will be described. The basic structure of the lock device of the present invention shown in FIG. 1 is the same as that used in the related art shown in FIGS. The left link 14 and the right link 1 are attached to the unlocking lever 13 pivotally attached to the base 10 by the pivot 11.
One end of 5 is also pivotally attached to these as well. The pivot points of these two links 14 and 15 with respect to the unlocking lever 13 are located equidistant from the pivot axis 11, and the two pivot points are indicated by A and B in the figure.

A left lock rod 16 is connected to the left link 14 and a right lock rod 17 is connected to the right link 15. A left spring is provided between each link 14 and 15 and the base 10. 18 and the right spring 19 are stretched,
The left and right springs 18 and 19 urge all parts to maintain the locked state of FIG.

In this form, the left and right springs 18, 1
9 left and right links 14, 15 and left and right lock rods 1
Since 6 and 17 are urged so as to always project to the locked position, the seats installed inside the guide groove G of the slat by setting the tips of the left and right locking rods 16 and 17 on the inclined surface T. The tips of the locking rods 16 and 17 slide into the S so that so-called automatic locking can be performed.

In the case of the basic structure shown in FIGS. 8 and 9,
The left and right links 14 and 15 are urged by the left and right springs 18 and 19 in a direction projecting at right angles to the moving direction of the slat of the shutter, and thereby the left and right lock rods connected to the left and right links 14 and 15. 16
Locking is carried out by pushing and 17 into the receiving seat S installed inside the guide groove G of the shutter, so that the locked state can be maintained only by biasing the left and right springs 18 and 19.

Therefore, in FIG. 8, the unlocking lever 13 is actuated against the action of the left and right springs 18 and 19 to pivot the pivot shaft 11.
When it is rotated in the counterclockwise direction in the figure about the center, the left and right links 14 and 15 pivotally attached to the unlocking lever 13 at pivot points A and B are respectively connected to the left and right lock rods. 16 and 17 are moved in the direction of pulling from both ends of the slats of the shutter, and the left and right locking rods 16 and 1 are moved.
When the tip of 7 is removed from the receiving seat S, unlocking is completed as shown in FIG. 5, and the shutter door can be pulled up and opened.

In order to fix the unlocked state of such a conventional product with a separate component, the unlocking lever 1 is placed in the unlocked position.
It is suitable to fix either one of the three or the left and right links 14 and 15, but in the present invention, the unlocking lever 13 is fixed by using the fixing piece 1 as shown in FIG.

As shown in FIG. 1, the fixed piece 1 is pivotally attached to the base 10 by a shaft 2, and a biasing spring 3 stretched between the fixed piece 1 and the base 10 acts so that the fixed piece 1 is always counterclockwise about the shaft 2. The end 1'is in the locked position, as shown in FIG.
It stops by abutting a part of.

The unlocking lever 13 is rotatably pivotally attached to the base 10 by a pivot 11, an upper portion thereof projects upward from the base 10, and a recess 6 is provided near the pivot 11. In FIG. 4, the recess 6 is located above the tip 1 ′ of the fixed piece 1, and the tip 1 ′ is not recessed in the recess 6 in this state.

A fixing release lever 4 is pivotally attached to the unlocking lever 13 at a pivot point C, and a tip 5 of the fixing release lever 4 is located along the unlocking lever 13 and above the recess 6. , Are urged by a spring (not shown) so as to rotate counterclockwise around the pivot point C.

FIG. 6 shows the positional relationship between the fixing piece 1, the unlocking lever 13 and the fixing release lever 4 in the unlocking and fixing position. In this state, the tip 5 of the fixing release lever 4 is fixed to the fixing piece 1. The side surface is in contact with the unlock lever 13 side.

The operation will be described. From the locking position of the shutter door shown in FIGS. 1 and 2, the unlocking lever 13 is rotated counterclockwise around the pivot 11 to the position shown in FIG. , Left link 18 and left lock rod 1
6, the right-side link 15 and the right-side lock rod 17 are drawn toward the base 10, and the tips of both lock rods 15 and 16 are made to escape from the receiving seat S, so that the shutter door can be opened. .

The main part of FIG. 3 in which the unlocking is completed is shown in FIG. 6, and the parts for fixing the unlocking lever 13 to the unlocking position are:
Starting from FIG. 4, reaching FIG. 6 through FIG. 5, the tip 1 ′ of the fixing piece 1 is recessed into the recess 6 of the unlocking lever 13 to prevent the unlocking lever 13 from moving, and to unlock the unlocking lever 13. Fix 13 completely in the unlocked position.

When the unlocking lever 13 is fixed at the unlocking position as shown in FIGS. 3 and 6, the shutter door may be opened arbitrarily to open the opening of the building closed by the shutter door. .

When the shutter door is closed and locked, from the state shown in FIGS. 3 and 6, the fixing release lever 4 is rotated clockwise around the pivot point C, and the tip 5 of the fixing piece causes the fixing piece to move. 1 is rotated in the clockwise direction about the axis 2 and thereby the tip 1'of the fixed piece 1 is allowed to escape from the recess 6, the unlocking lever 13 which is released from the restraint will move to the left and right springs 18,19. By the action, the lock rods 16 and 17 are returned to the positions shown in FIGS. 1 and 2, and the left and right locking rods 16 and 17 are thrust into the receiving seat S again to lock.

In the above description, the case where the device of the present invention is applied to the vertical pull shutter door is explained, but it goes without saying that the present invention can be applied to the horizontal pull shutter door with the same structure.

[0029]

According to the present invention, there is provided a shutter door locking device capable of fixing the unlocked state and quickly releasing the unlocked fixed state without changing the automatic locking function of the shutter door lock. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a conceptual diagram when a shutter door locking device according to the present invention is applied to a vertical shutter door.

FIG. 2 is a front view of the shutter door locking device according to the present invention in a locked state.

FIG. 3 is a front view of what is shown in FIG. 2 in an unlocked state.

FIG. 4 is a front view of the main part of FIG. 2 in a locked state.

5 is a front view of what is shown in FIG. 4 in the middle of unlocking.

FIG. 6 is a front view of what is shown in FIG. 4 in an unlocked and fixed state.

FIG. 7 is a front view of what is shown in FIG. 6 in an unlocked state.

FIG. 8 is a front view of a conventional device in a locked state.

FIG. 9 is a front view of a conventional device in an unlocked state.

[Explanation of symbols]

 1 Fixing piece 1'Fixing piece tip 2 Shaft 3 Energizing spring 4 Fixing release lever 5 Fixing release lever tip 6 Recess 10 Base 11 Pivot 13 Unlocking lever 14 Left link 15 Right link 16 Left lock rod 17 Right Locking rod 18 Left spring 19 Right spring

Claims (2)

[Claims] Claim: What is claimed is: 1. A single unlocking lever pivotally mounted on a base is pivotally provided with two links respectively connected to two locking rods which are intended to project in directions opposite to each other. Wear
In a locking device for a shutter door of a type in which a link is urged by a spring to maintain the link and the locking rod in a locking position, a fixing means for fixing an unlocking lever to an unlocking position, and a releasing means for releasing the fixing means A locking device for a shutter door, which is provided with a fixing releasing means. 2. The fixing means is a fixing piece that is recessed in the unlocking lever, and the fixing releasing means is pivotally attached to the unlocking lever, and the fixing piece is for escaping from the recess. The locking device for a shutter door according to claim 1, which is a fixing release lever.