JP3423681B2 - Door guard mechanism and door guard method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain lock type door guard mechanism or a door guard method which is used by being attached to an existing door guard.

[0002]

2. Description of the Related Art Conventionally, as a door guard for hotels and the like, there is an arm-type door guard that locks the arm of the door guard to an inward-opening receiving metal object or an external-opening receiving metal object. There was a problem that only the door could be opened. Therefore, the arm-type door guard has a drawback that the visitor cannot be clearly identified.

Further, in the conventional chain type door guard, if the chain is twisted, the chain will not come off easily, and if it is rushed in an emergency, the chain will hardly come off. As a result, it is impossible to evacuate or evacuate. It had the problem of being late and catastrophic.

Further, in the conventional door guard mechanism, the door guard and the door chain can only be operated inside, and the key itself must be carried around, so the key itself is often dropped. It was

[0005]

In view of the above problems, the present invention makes it possible to reliably open a chain type door guard, and at the same time, provides a novel door guard mechanism or door guard method that strongly shuts out against intrusion from the outside. It is intended to provide.

Another object of the present invention is to provide an arm type door guard that can be opened a little wider, and to provide a new door guard mechanism or a door guard method that can widely open a door with the arm type door guard installed. It is what

Further, there is provided a mechanism or method that can be opened and closed not only from the inside but also from the outside.
The present invention also provides a mechanism or method that can have the function of an auxiliary lock, and can be locked / unlocked from the inside / outside with a digital lock or a dial lock without carrying a key.

[0008]

A door guard mechanism or a door guard method of the present invention includes a body in which an existing locking device such as a digital lock or a dial lock is housed in a color case, and the body is inserted and removed in a strike case. The gist of the present invention is that a boss having a locking head with a protruding inner end is provided on the side of the strike case, and a slide nut is screwed on the boss to form a door-side mounting structure. .

Further, as the door frame side structure, a door side mounting structure and a door chain are provided by fixing a U-shaped bent metal fitting which is attached to an existing inwardly or outwardly opening bracket. It has been adapted to cooperative with, and summarized in that a inner opening or outwardly opening receiving hardware for mounting bracket attached to the inner open or outwardly opening receiving hardware of existing door guard to be used for door guard system.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a door guard mechanism or a guard method according to the present invention will be described below with reference to the drawings. The main body 1 has a structure in which an existing digital lock 2 or dial lock 3 is housed in a cylindrical color case 4 and fastened with a nut 5, and a mount 6 is externally inserted and machine screws 7, 7, 7 are attached. Therefore, the operation boss 9 that connects one end of the chain 8 is connected to one side.

The main body 1 is constructed so that an outer color case 4 is removably housed in a cylindrical strike case 10, and a protrusion 11 described later and a lock claw 12 of a digital lock 2 or a dial lock 3 are described later. Has a structure for releasing engagement by a locking device (not shown).

From the strike case 10, a boss 13 having a protrusion 11 at its inner end is provided so as to project laterally from the strike case 10 to form a collar-shaped head 14 having a large tip, and between the head and the collar-shaped head 14. Slide nut 1 sandwiching the washers 15 and 15
6 is screwed, and from the slide nut 16 to the boss 13
A hollow screw 17 is screwed toward the front.

A cylindrical cap 18 is provided on the outer periphery of the slide nut 16, and a push spring 19 is mounted between the cap 18 and the slide nut 16 to prevent the cap 18 from rotating and a hollow screw 20. It is made by screwing.

Reference numeral 21 is an inward opening receiving metal fitting for attaching to the inward opening receiving metal 22 of the existing door guard,
Insertion cylinders 25 ′, 2 are provided at both ends of a mounting case 25 having through holes 24 for inserting the projections 23 of the inward opening receiving metal 22.
5'is fixed and the shaft hole 2 is provided at both ends of the cover case 26.
6 ', 26' ... perforated and bent in a U-shape
Insert the leg part of No. 7 into the shaft hole 26 and the insertion tube 25, and
It will be concluded with.

A protrusion 29 is provided at the center of the cover case 26.
The fixing screw 30 screwed in from the protrusion 29 hits the protrusion 23 of the inward-opening receiving metal member 22 of the existing door guard and is tightly and securely fastened. The other end of the chain 8 is tied to the hanging metal 27.

Further, reference numeral 31 is an attachment fitting for an outside opening receiving hardware 32 attached to the outside opening receiving hardware 32 of the existing door guard, and a through hole 34 for inserting the projection 33 of the outside opening receiving hardware 32.
The insertion tube 3 is attached to both ends of the mounting case 35 in which the plate is formed.
5 ', 35' are fixed and the plate surface is opened to the outside.
.. are formed at both ends of a cover case 36 in which a through hole 40 for inserting the projection 33 of No. 2 is formed, and leg portions of a metal fitting 38 bent in a U shape are formed in the shaft hole 37 and the insertion tube. 35 and the nut 39 to fasten the through holes 34, 34 to the projection 33.
It is fixed under the chin. The other end of the chain 8 is tied to the hanging fitting 38 in the same manner as described above.

According to the door guard mechanism or door guard method having the above-described structure, the inner opening receiving metal fitting 21 or the outer opening receiving metal fitting 31 of the existing door guard is attached to the inner opening receiving metal 22 or the outer opening receiving metal 32. The strike case 10 is attached to the arm 41 or the chain catcher 42 of the existing door guard for use.

Boss 1 projecting from strike case 10
The arm 41 or the chain catcher 42 is sandwiched between 3 and the slide nut 16 via the washer 15 and tightly tightened to fix the hollow screw 17 by screwing. Further, a non-rotating hollow screw 20 is screwed to prevent the cap 18 from rotating.

The strike case 10 is for inserting the main body 1 provided with a projecting boss 9 so that the lock claw 12 engages with or releases the protrusion 11 corresponding to the inner end of the boss 13 by the insertion. become. The chain 8 is connected to connect the inner opening receiving metal fitting 21 or the outer opening receiving metal fitting 31 and the main body 1 to each other to tie or release the main body 1 to open the door 8
Then, the digital lock 2 or dial lock 3 is unlocked to open the chain 8.

Therefore, even in the case of emergency opening, the chain 8 can be easily removed by opening the digital lock 2 or dial lock 3. For this reason,
Even if the danger is imminent, the chain 8 can never be removed and, as a result, so-called canned goods do not occur. Further, by lengthening the chain 8, there is an advantage that the door can be opened so that the visitor can fully see it.

Further, the door guard mechanism or the guard method of the present invention can be used for the existing chain type guard 43 by integrating it with the main body 1 by utilizing the operation boss 9. It can be used as it is without removing the guard.

[0022]

As described above, the door guard mechanism or the door guard method according to the present invention connects existing door guards as they are with a chain. At that time, the main body using the existing digital lock or dial lock is used as a strike case. It has a feature that the chain can be reliably removed even in an emergency because it has a structure that can be inserted and removed.
There is no defect that it becomes a so-called canned product without removing the chain.

Further, the door guard mechanism or door guard method of the present invention can be used for existing chain guards, and has the feature that it can be used as it is without removing any existing door guards. Therefore, the effect obtained by implementing the present invention is extremely large.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view showing an embodiment of a door guard mechanism or a door guard method of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an exploded perspective view of the door frame side receiving metal fitting side.

FIG. 4 is a perspective view showing a state in which the door is closed after the door guard mechanism is locked.

FIG. 5 is a perspective view showing a state in which the door is opened with the door guard mechanism locked or unlocked.

FIG. 6 is a perspective view showing a state in which the door guard mechanism of the present invention is attached to an existing door chain.

[Explanation of symbols]

1 Main Body 2 Digital Lock 3 Dial Lock 4 Color Case 5 Nut 6 Mount 8 Chain 9 Operating Boss 10 Strike Case 11 Protrusion 12 Lock Claw 13 Boss 14 Collar-shaped Head 16 Slide Nut 17 Hollow Screw 18 Cap 19 Push Spring 20 Non-rotating Hollow Screw 22 Inner opening receiving hardware 21 Inner opening receiving hardware mounting bracket 23 Protrusion 24 Through hole 25 Mounting case 26 Cover case 26 'Shaft hole 27 Hanging metal fitting 28 Nut 29 Protrusion 30 Fixing screw 32 External opening receiving hardware 31 External opening receiving hardware mounting Metal fitting 33 Protrusion 34 Through hole 35 Mounting case 36 Cover case 37 Shaft hole 38 Hanging fitting 39 Nut 40 Through hole 41 Arm 42 Chain catcher 43 Chain type door guard A Door B Door frame

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP2000-192702 (JP, A) Actually opened 61-91964 (JP, U) Actually opened 52-118798 (JP, U) Actually opened 64-57271 (JP, U) Actual Kaihei 3-105558 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05B 65/06 E05C 17/06

Claims (2)

(57) [Claims] 1. A collar in which an existing locking device such as a digital lock or dial lock is inserted and accommodated in a strike case so as to be insertable and removable, and a collar having an inner end protruding laterally from the strike case. A boss with a circular head is projected, and a slide nut is screwed on the boss to make a door side mounting structure. Furthermore, it is mounted on an existing inward-opening or outward-opening bracket.
And fix the U-shaped bent metal fittings on the door side
Attached structure and door chain
A Door guard mechanism characterized by having a frame side structure . 2. A main body in which an existing locking device such as a digital lock or a dial lock is inserted and accommodated in a color case is inserted into a strike case so that the main body can be freely inserted and removed, and a collar-shaped body having an inner end protruding laterally from the strike case A boss with a head is projected, and a slide nut is screwed on the boss to make a door-side mounting structure. Furthermore, it is mounted on an existing inward-opening or outward-opening bracket.
And fix the U-shaped bent metal fittings on the door side
Attached structure and door chain
(A) A door guard method characterized by having a frame side structure .