JP2002242511A - Fixture for door closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture for a door closer locking the door closer so as not to be operated in the door-opening direction, preventing the opening of a door even when a lock is unlocked and being capable of ensuring safety in the case of keeping at home. SOLUTION: In the door closer 1 composed of a main body 3 being fixed onto a door A and having a rotating shaft 2 and its rotation imparting means, a door-side arm 4 in which a base end is connected to the rotating shaft 2 so as to be integrally rotated and a fixing-side arm 8 in which the base end is connected to a fixing member and a front end is connected rotatably at the front end of the door-side arm 4, the fixture is formed of a fixing ring 12 being externally inserted in a retractable manner to the door-side arm 4 and the fixing-side arm 8 at a position where the door A is closed and preventing the expansion movement of both arms in the opening direction of the door A and a fixing means 13 being mounted on the fixing ring 12 and fixing the fixing ring 12 at a fixed position to both arms 4 and 8, and the door A cannot be opened by externally inserting the fixing ring 12 to the door- side arm 4 and the fixing-side arm 8 at the position where the door A is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to prevent a door of a door closer from being opened from outside by inserting a door of a door closer into a door-side arm and a fixed-side arm in a closed phase. The present invention relates to a fixing device for a door closer.

[0002]

2. Description of the Related Art Generally, doors at entrances of buildings such as entrances are provided with door closers for automatically returning the doors to a closed position after the doors are opened so as to prevent the doors from being left open. Has become.

[0003] Incidentally, doors at entrances such as entrances in buildings are locked with locks in order to prevent intrusion from the outside. Recently, however, it is necessary to unlock the locks using various tools. Picking robbery that invades in is frequent.

[0004] Particularly, when a family member is at home indoors,
Even if a burglary is breached, it becomes a very dangerous situation, turning into a robber who recovers and harms the family.

For this reason, in order to ensure safety at home,
Conventionally, a door is locked with a door chain.

[0006]

However, locking with the door chain is intended to prevent the door from being further opened after the lock is unlocked, so that the tool can be opened from this slightly opened portion. The door can be easily opened by cutting the door chain by using the door chain, and there is a problem that the door chain cannot secure sufficient safety at home.

Therefore, an object of the present invention is to lock the door closer so as not to operate in the door opening direction, prevent the door from being opened even when the lock is unlocked, and secure the safety at home. An object of the present invention is to provide a metal fitting for a door closer.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a body fixed to a door and provided with a rotating shaft and a rotation applying means, and a base end integrally formed with the rotating shaft. A door-side arm connected so as to pivot, a base end connected to a fixing member, a distal end of the door-side arm fixed pivotally connected to the distal end of the door-side arm, a metal fittings of a door closer, A fixing ring that is removably fitted to the door-side arm and the fixed-side arm that are in a phase where the door is closed, and that prevents the arms from expanding in the direction in which the door is opened. This adopts a structure formed by fixing means for fixing the ring at a predetermined position with respect to both arms.

When a fixing ring is externally inserted into the door-side arm and the fixed-side arm in a phase where the door is closed, and the fixing ring is fixed to both arms by fixing means, the lock is unlocked and the door is unlocked. The opening movement of the door-side arm and the fixed-side arm in the opening direction is prevented, and the door does not open.

Here, an elastic pad is provided on the inner surface of the fixing ring, and the fixing means is formed of a fastening screw screwed on the fixing ring so that the position of the fixing ring can be adjusted in the radial direction. be able to.

The elastic pad prevents the arms from being damaged when the fixing ring is fitted to the door-side arm and the fixed-side arm. It will prevent you from leaving.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in the figure, the door closer 1 has a door A
, A main body 3 having a rotating shaft 2 and its rotation applying means, a door-side arm 4 having a base end connected to the rotating shaft 2 so as to rotate integrally therewith, and a door having a base end serving as a fixed member A hinge 6 fixed to the outer frame B is rotatably connected with a shaft 6,
The front end is formed by a fixed side arm 8 rotatably connected to a front end of the door side arm 4 by a pin 7.

FIG. 1 shows a plane state of the door closer 1 when the door A is closed. The door-side arm 4 and the fixed-side arm 8 are arranged in a plane V shape.

When the door A is opened, as shown in FIG. 2, the phase of the rotation shaft 2 of the main body 3 with respect to the shaft 6 of the fixed arm 8 causes the door side arm 4 and the fixed side arm 8 to expand and rotate. When the shaft 2 rotates, the rotation applying means accumulates the reverse rotation force. When the door A is released, the door A is rotated to the closed position by the operation of the arms 4 and 8 due to the reverse rotation of the rotation shaft 2. .

Although not shown in the drawings, the means for imparting rotation to the rotation shaft 2 of the door closer 1 is, as is well known,
The piston and the rotating shaft 2 movably housed in the main body 3 are
The piston and the rack are connected by a pinion so that the piston moves forward and backward in the axial direction by the rotation of the rotating shaft 2, the spring is urged to move in one direction by a spring, and the spring is moved by the movement to the other when the door A is opened. It compresses to accumulate elasticity to rotate the rotating shaft 2 in the direction in which the door A closes, and at the same time, resists movement of the piston to one of the pistons with the fluid sealed in the main body 3 so that the door A closes slowly. It has such a structure.

The fixing bracket 11 of the door closer 1 is removably fitted to the door-side arm 4 and the fixed-side arm 8 which are in a phase where the door A is closed, and is connected to both arms 4 in the direction of opening the door A. The fixing ring 12 includes a metal fixing ring 12 for preventing the expansion movement of the arm 8 and a fixing means 13 provided on the fixing ring 12 for fixing the fixing ring 12 at a predetermined position with respect to the arms 4 and 8.

The fixing ring 12 is made of a strong material such as stainless steel or a steel plate. The fixing ring 12 is externally inserted into the door-side arm 4 and the fixed-side arm 8 from the tip side rotatably connected by the pin 7 to the door. A is fitted to the door side arm 4 and the fixed side arm 8 in the closed phase so as to be fitted outside.
It has a flat rectangular tube shape, and its both ends are inclined walls corresponding to the inclinations of the door-side arm 4 and the fixed-side arm 8, which are arranged in a plane V shape.

A pad 14 made of an elastic material such as rubber or sponge is fixed to the inner surface of the fixing ring 12, and when the pad 14 is externally fitted to the door-side arm 4 and the fixed-side arm 8, the metal is brought into contact with the door. The side arm 4 and the fixed side arm 8 are not damaged.

The fixing means 13 of the fixing ring 12 is
It is formed of a fastening screw 13a threaded in a penetrating manner so that the position in the peripheral wall of the fixing ring 12 can be adjusted in the radial direction at an appropriate position. By pressing the arm 8, the fixing ring 12 is fixed to the door-side arm 4 and the fixed-side arm 8.

An elastic body such as rubber or sponge is preferably attached to the end of the shaft of the screw 13a so that the door-side arm 4 and the fixed-side arm 8 are not damaged.

Further, the door closer 1 has the door-side arm 4 or the fixed-side arm 8 depending on the manufacturer and model.
The fixing ring 12 has a structure of a flat bar or a round shaft. Therefore, the fixing ring 12 has a shape adapted to the structure of the door-side arm 4 or the fixed-side arm 8 and can be externally inserted from the tip side rotatably connected by the pin 7. What is necessary is just to form in the cylindrical shape of size.

The fixture according to the present invention is configured as described above. To prevent the door A from being opened while the door A is closed and locked at home, as shown in FIG. A fixing ring 12 is externally inserted into the door-side arm 4 and the fixed-side arm 8 of the door closer 1 from the tip side rotatably connected with the pin 7, and is inserted halfway between the door-side arm 4 and the fixed-side arm 8. Screw 13 a is screwed in with fixing ring 12 positioned, and fixing ring 12 is fixed to door-side arm 4 and fixed-side arm 8.

In such a state, even if the lock is illegally unlocked and the door A is to be opened, the door closer 1 locks the door-side arm 4 and the fixed-side arm 8 with the fixing ring 12, whereby the door is closed. A cannot be opened.

That is, as shown in FIG. 2, when the door A rotates in the opening direction, the door-side arm 4 and the fixed-side arm 8
When the fixing ring 12 is inserted into the middle of the door-side arm 4 and the fixed-side arm 8, the expansion of the door-side arm 4 and the fixed-side arm 8 is prevented by the fixing ring 12. If the door-side arm 4 and the fixed-side arm 8 cannot be opened, even if the door A is pulled in the opening direction,
Can not open.

Since the door A is not opened, it is impossible to put a hand through the opened gap of the door A as in the case of the door chain.
Is located on the hinged side at the top of the door, so that it is impossible to remove the fixing ring 12 from the outdoor,
Therefore, even if the lock is illegally unlocked by picking robbery, intrusion from the outside into the room can be reliably prevented, and safety at home can be ensured.

When the door A is to be opened, the screw 13a is used.
To remove the fixing ring 12 from the door-side arm 4 and the fixed-side arm 8.

[0028]

As described above, according to the present invention, the door closer to the door closer and the fixed side arm of the door closer in the closed phase are detachably inserted into the door closer and the two arms in the direction of opening the door. Since the fixing ring for preventing the expansion movement is provided with fixing means for fixing the fixing ring at a predetermined position with respect to both arms, the fixing ring is removed from the door-side arm and the fixed-side arm in the phase in which the door is closed. By inserting and fixing the fixing ring to the door-side arm and the fixed-side arm, even if an attempt is made to open the door, the expansion of the door-side arm and the fixed-side arm is prevented by the fixing ring.
Even if the door cannot be opened by pulling in the direction to open the door, even if the lock is illegally unlocked by picking robbery,
Intrusion from the outside into the room can be reliably prevented,
Safety at home can be ensured.

Further, since the fixing ring is provided with fixing means only, it is easy to manufacture and can be provided at low cost. In addition, anyone can easily attach and detach the door side arm and the fixed side arm of the door closer. can do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing a state where a door of a door closer is closed and a state where a fixing bracket is attached thereto.

FIG. 2 is a cross-sectional plan view showing a state where a door of a door closer is opened.

FIG. 3 is an enlarged vertical sectional side view taken along arrow III-III in FIG. 1;

FIG. 4 is a perspective view of a fixing bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door closer 2 Rotating axis 3 Main body 4 Door side arm 5 Hinge 6 Axis 7 Pin 8 Fixed side arm 11 Fixing bracket 12 Fixing ring 13 Fixing means 13a Screw 14 Pad

Claims (2)

[Claims] 1. A body fixed to a door and provided with a rotation shaft and a rotation applying means, a door-side arm having a base end connected to rotate integrally with the rotation shaft, and a base end fixed to a fixing member. A fixed fixture for a door closer comprising a fixed arm connected to a tip of a door arm and rotatably connected to a tip of the door arm, wherein the fitting is inserted into and removed from the door arm and the fixed arm in a phase in which the door is closed. A fixing ring that is fitted to the outside as possible and prevents the arms from expanding in the direction of opening the door, and fixing means provided on the fixing ring and fixing the fixing ring to predetermined positions with respect to the both arms. Door closer fixings. 2. The fixing ring according to claim 1, wherein an elastic pad is provided on an inner surface of the fixing ring, and the fixing means is formed of a fastening screw screwed on the fixing ring so that the position of the fixing ring can be adjusted in a radial direction. The fixing hardware of the door closer described.