JPH10227164A - Door guard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door guard device capable of automatically and easily unlocking a lock hardware by only pushing a switch with remote control. SOLUTION: A door guard device mounts a lock hooker 3 on a door in a raisable manner, a hooker locking device interlocking with the lock hooker 3 is mounted to a door frame surface. In that case, the hooker locking device mounts an interlocking section 14 to one end 12a interlocking with the lock hooker 3, and the door guard device is equipped with an interlocking metal fixture 12 having an insertion groove 17 in a specific place of the circumferential surface, a spring 16 urged to the other end 12b of the interlocking fixture 12 so as to separate the interlocking fixture 12 from a case 11 of the hooker locking device and a solenoid 21 having an axle 22 capable of being inserted in the insertion groove 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door guard device capable of automatically unlocking a door lock.

[0002]

2. Description of the Related Art FIGS. 2A to 2C are explanatory views showing the use state of a conventional door guard device. As a general door guard device, as shown in FIG.
a, and the lock hook 3 is attached to a fixed base 5 fixed to the door 4 so as to be able to be turned upside down.
As shown in FIG. 2 (b) when the lock is locked, the lock hook 3 is manually raised from the door surface 4a with the door 4 closed, and when the lock hook 3 is unlocked, as shown in FIG. 2 (c). As shown in the drawings, a door guard device has been conventionally known in which the door 4 is temporarily closed when the door is in the middle open state, and in this state, the lock hook 3 is tilted to the door surface 4a to unlock the door.

[0003]

However, in the conventional door guard device, the door guard can be opened and closed simply by raising and lowering the lock 3 so that the operation is simple. No one can enter from outside, and when unlocking the lock 3, the door 4 must be opened to open the door to confirm the visitor, and then the door 4 must be closed and the lock 3 must be removed. In addition, there is a problem that even when a visitor can be confirmed by an interphone or the like, it is necessary to go to the door 4 side.

SUMMARY OF THE INVENTION [0004] The present invention has been made to solve these problems as a technical problem. The locking of the locking device is simple, and the locking device can be automatically automatically operated by a remote operation simply by pressing a switch. It is an object to provide a door guard device that can be unlocked.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a locking portion is provided at the tip instead of the conventional engaging and fixing metal fitting so as to be able to be detached from the locking device. An alloy tool is used to lock and fix the engaging fitting by engaging the mandrel of the solenoid.When unlocking the lock, the solenoid is energized to release the lock by the solenoid mandrel. The engagement fitting is detached by the restoring force of the spring.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a door guard device in which a lock device is attached to a door so as to be able to move up and down, and a lock device for engaging with the lock device is mounted on a door frame surface. A locking device is provided at an end with a locking portion that engages with a locking hook, and a rod-shaped engaging metal provided with an insertion groove at a predetermined position on an outer peripheral surface; and detaching the engaging metal from a case of the hook locking device. A solenoid having a mandrel that can be inserted into and removed from the insertion groove, and the power supply to the solenoid removes the mandrel that is engaged with the insertion groove and automatically releases the lock hook. It is designed to be unlocked.

[0007]

1 (a) and 1 (b) show an embodiment of the present invention. FIG. 1 (a) is a front view, and FIG. 1 (b) is FIG.
It is sectional drawing by the II line of (a). In these figures, the same symbols as those in FIG. 2 indicate the same parts. Reference numeral 11 denotes a case of a hook locking device attached to the door frame surface 1a shown in FIG. 2, in which an insertion hole 13 through which an engaging metal fitting 12 provided in a horizontal direction freely slides is formed. A locking portion 14 for locking the lock hook 3 is formed at one end portion 12a of the engagement metal fitting 12, and the other end portion 12b is in contact with a mounting plate 15 mounted on the case 11, and is attached to the mounting plate 15 side. It is inserted into a provided spring (compression spring) 16. Also, 1
Reference numeral 7 denotes an insertion groove which engages with and locks a solenoid shaft described later.

The spring 16 is held by a holder 18 and locked by a locking claw 18a. 19 is the case 11
Are screw holes for attaching to the door frame surface 1a of FIG.

A solenoid 21 which operates in a vertical direction is provided in the case 11, and is fixed to the case 11 by a holding plate 20.

Reference numeral 22 denotes a mandrel of the solenoid 21 which is connected to a power switch (not shown) and which operates in the up and down direction by an energizing operation thereof. The lock from the insertion groove 17 provided at a predetermined position is released. When the lock is off, the lock falls by its own weight and engages with the insertion groove 17 to lock. A spring (compression spring) 23 indicated by a two-dot chain line
Is used when the solenoid 21 is positioned horizontally, and will be described later in detail.

Next, the operation will be described.

The lock hook 3 engaged with the engagement fitting 12 shown in FIG. 1 shows a state in which the door 4 is opened middle as shown in FIG. 2C. In this case, since the energization of the solenoid 21 is turned off, the mandrel 22 falls by its own weight, and the engagement fitting 12 is engaged with the insertion groove 17 and locked.

Next, when unlocking the lock hook 3 by remote control, the magnet 22 is magnetized by energizing the solenoid 21 and the mandrel 22 rises. Is released. For this reason, the engagement fitting 12
Is released from the case 11 by the restoring force (biasing force) of the spring 16, and the stop of the lock hook 3 is released. Thereafter, when the energization of the solenoid 21 is turned off, the mandrel 22 falls by its own weight.

When inserting the engagement fitting 12 into the case 11, the solenoid 21 is energized to raise the mandrel 22, and the engagement fitting 12 is inserted through the insertion hole 13. Alternatively, the other end portion 12b of the engagement fitting 12 is formed in, for example, a conical shape, and the mandrel 22 of the solenoid 21 is pushed up by the movement of the conical surface, thereby enabling insertion. Next, the engagement fitting 12 is further moved to insert the mandrel 2 into the insertion groove 17.
The setting is completed by engaging 2.

Next, a method of operating the door guard device will be described.

In an emergency, for example, by pressing a power switch (push button) for remote control provided in the control room,
The lock hook 3 can be unlocked. When the automatic unlocking is used for unlocking the locking device 3 in everyday life, not for emergency use, the power switch is disposed in a position where the power switch can be operated in advance, and the visitor can be operated by an interphone or the like. At the time of confirmation, if the power switch provided is pressed, the solenoid 21 is energized and can be automatically unlocked. In this case, the door 4 shown in FIG.
When the door is automatically opened when the visitor is confirmed as being in the open state, the power can be unlocked by pressing the power switch located nearby. Even if the door 4 is opened in the middle, the door is closed. The locking hook 3 can be unlocked even in the locked state.

When the lock device 3 is to be unlocked by manual operation, the door 4 is closed once, and the lock device 3 is tilted toward the door 4 with the door closed in the same manner as in the prior art. It can be unlocked by removing it from the tool 12.

In FIG. 1, when the case 11 is mounted so that the engaging fitting 12 is in the horizontal direction and the mandrel 22 of the solenoid 21 is also horizontal, as indicated by a two-dot chain line on the outer peripheral surface of the mandrel 22. The spring 23 is attached to the.

In this case, the mandrel 22 is drawn into the solenoid 21 by energization of the solenoid 21, so that the spring 23 is pressed and the engagement with the insertion groove 17 of the engagement fitting 12 is released.

When the solenoid 21 is turned off, the mandrel 22 is protruded by the restoring force (biasing force) of the spring 23.

As described above, when the mandrel 22 moves in the vertical direction, a spring 23 may be provided to assist the mandrel 22 to fall by its own weight.

[0022]

Since the present invention is configured as described above, the following effects can be obtained.

The lock is automatically unlocked by operating the power switch to energize the solenoid, so that the lock can be unlocked by a remote operation.

When automatically unlocking the lock, the mandrel of the solenoid engaged with the insertion groove of the engagement fitting is released, so that the door can be closed or the door can be opened. But you can unlock it.

Further, since the unlocking operation of the locking device can be manually performed, it can be used even in the event of a power failure.

Further, since the mandrel of the solenoid is made to fall by gravity or restored by a spring when the power supply to the solenoid is cut off, power is not consumed at the time of locking, which is economical.

[Brief description of the drawings]

1 shows an embodiment of the present invention, wherein FIG. 1 (a) is a front view, and FIG. 1 (b) is a cross-sectional view taken along line II of FIG. 1 (a).

FIG. 2 is an explanatory diagram showing a use state of a conventional door guard device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door frame 1a Door frame surface 3 Lock hook 4 Door 4a Door surface 11 Case 12 Engagement fitting 12a One end 12b Other end 13 Insertion hole 14 Locking part 15 Mounting plate 16 Spring 17 Insertion groove 18 Holder 18a Lock Claws 20 Holding plate 21 Solenoid 22 Mandrel

Claims (1)

[Claims] 1. A door guard device wherein a lock device is attached to a door so that the lock device can be turned upside down, and a lock device locking device that engages with the lock device is mounted on a door frame surface. A bar-shaped engaging member provided with an engaging portion for engaging with the hook at one end and an insertion groove provided at a predetermined position on an outer peripheral surface; and the engaging member at the other end of the engaging member. A spring that urges the locking device to be detached from the case, a mandrel that can be inserted into and removed from the insertion groove, and a solenoid that disengages the mandrel from the insertion groove when energized. Door guard device.