JPH10159433A - Door built-in type double swinging closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a large self-closing force with a small-sized door built-in type double swinging closer. SOLUTION: A piston rod 32 connected to a piston 31 in a cylinder 3 is connected to one end side of a crank 4 and a slider 5 is connected to the other end side of the crank 4 through an arm 42 and having a pin. An outside cam 8 contacted with the pin provided to the slider 5 from the outside and, at the same time, fixed to a rotational shaft 7 and an automatic temperature correction mechanism 6 properly adjusting flow of oil discharged from the inside of the cylinder 3 in accordance with ambient temperature variations are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided door in which a door rotates in both directions, and more particularly to a double-sided door-closer which can be easily built in a double-sided door.

[0002]

2. Description of the Related Art For example, double doors are often installed at entrances and offices of buildings, department stores, hotels, libraries or public facilities. In addition, a door installed in such a place is usually provided with a closer that closes the door.

[0003]

The door may be made of, for example, a single piece of glass, or may be made of a thin metal or wooden material. Then, since it cannot fit in the inside of the door in dimension, it will be buried in the floor (or the inside of the ceiling frame).

[0004] As a closer used for such a double door, one using an outer cam mechanism is known.
The elastic force of the spring in the cylinder is constantly urged against the pin circumscribing the cam to generate a self-closing force, and at the time of closing the door, a braking force is applied to the door by hydraulic pressure generated in the cylinder. .

[0005] However, such a closer has a large size and must be buried in a floor or the like.

Therefore, closers with a built-in door are being studied. However, a large spring is required to secure a certain amount of self-closing force. ) Is unavoidable, which makes installation on thin doors and heavy doors difficult.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a double door closer with a built-in door which can generate a large self-closing force and a large braking force even if it is small. is there.

[0008]

That is, the present invention is provided inside a door that rotates about a rotation shaft that is integrally fixed to a floor or a ceiling without being fixed to a floor or a ceiling, and is provided by an elastic force of a spring or the like. What is claimed is: 1. A door-incorporated double door closer comprising: a door closing means for self-closing a double door; and a cylinder for braking the closing operation of the door by using fluid pressure, wherein a piston rod connected to a piston in the cylinder and one end. A booster such as a crank connected on the side, an arm connected via an arm connected to the other end of the booster, a slider having a pin attached thereto, and a circumscriber for the pin provided on the slider, and A cam fixed to the shaft; and an automatic temperature correction mechanism for appropriately adjusting an outflow amount of oil discharged from the cylinder in accordance with a change in ambient temperature.

[0009]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a double door closer (hereinafter abbreviated as "closer") 1 with a built-in door according to the present invention. The closer 1 has a relatively small size, particularly a narrow shape, and is provided inside the lower end of the double door 2. In addition, a cylinder 3, a crank 4, a slider 5, and an automatic temperature correction mechanism 6 of a hydraulic braking system are provided inside the casing body 1A of the closer 1. In FIG. 1, reference numeral 7 denotes a rotation shaft of the door 2 having a lower end fixed inside the floor F, and reference numeral 8 denotes an outer cam fixed to the rotation shaft 7.

The closer 1 has a casing body 1A.
Inside, a hydraulic braking type cylinder 3, a crank 4,
A slider 5 and an automatic temperature correction mechanism 6 are provided.

The cylinder 3 has a slidable piston 31 inside a cylinder chamber 30 and a piston rod 32 having one end connected to the piston 31. A piston 31 is provided inside the cylinder chamber 30.
And a small (small diameter) compression spring 33 is disposed between them. The cylinder chamber 30 is divided right and left by a piston 31 to form a right cylinder chamber 30R and a left cylinder chamber 30L. In particular, an outflow passage communicating with the high-pressure chamber of the automatic temperature correction mechanism 6 is provided on the right cylinder chamber 30R side. 34, and an inflow passage 35 communicating with the low-pressure chamber of the automatic temperature correction mechanism 6 is provided on the left cylinder chamber 30L side. In addition,
The cylinder 3 is filled with an appropriate oil to generate an oil pressure.

The crank 4 rotates about a support shaft 41 fixed to the crank chamber 40.
The fulcrum to which the support shaft 41 is attached is set at a position where the right end and the left end in FIG. 1 are internally divided into (2-3): 1 (of course, not limited to this internal division ratio) (the right side is long). The left part constitutes the short arm part while constituting the arm part). The other end of the piston rod 32 is connected to the distal end of the long arm portion of the crank 4 and the slider 5 is connected to the distal end of the short arm portion via the arm 42. In this case, the braking force can be increased, and at the time of the door opening operation, the door opening force is reduced, so that the door can be opened lightly by hand. In this embodiment, a crank is used as the booster. However, the present invention is not limited to this, and various types can be applied.

The slider 5 is of a thin plate shape having a substantially U-shaped vertical section, and is slidably mounted in a slide chamber 50 formed in parallel with the length direction of the cylinder chamber 30. . As shown in FIG. 2, the slider 5 is provided with pins 51A to 51C at three positions corresponding to respective apexes of an isosceles triangle, and at least the bottom edge of these pins 51A to 51C. One of the two pins 51A and 51B corresponding to the vertex of the portion is
The outer cam 8 always comes into pressure contact with any part. Note that the outer cam 8 has a symmetrical shape in order to be applied to a double door, and a lock groove 8A for temporarily locking the door 2 is formed in a part thereof. The cylinder chamber 30, the crank chamber 40, and the slide chamber 50 are filled and filled with appropriate oil.

The automatic temperature compensating mechanism 6 is similar to that described in the official gazette (Japanese Patent Application No. 225320) which has already been filed and published. For details, refer to this document. . When adjusting and controlling the flow rate (braking force) (adjustment of closing speed) by the automatic temperature correction mechanism 6, the adjustment chamber 2 provided at the lower end of the door 2 is used.
It can be adjusted by rotating the adjustment screw 61 in A.

Next, the operation of this embodiment will be described. For example, when the door 2 is opened from the closed state, the rotating shaft 7 and the outer cam 8 are always in a constant and immobile state, while only the door 2 rotates and displaces its position. From the change in the relative position with respect to the pins 51A to 51C, the press-contact positions by the pins 51A to 51C change. That is, the closed state of the door 2 is the state shown in FIG. 3, that is, the state where both the pin 51A and the pin 51B are pressed against the right end of the outer cam 8.

However, when the door 2 is opened, as shown in FIG. 4, the outer cam 8 is inclined obliquely with respect to the pins 51A to 51C. It will be pressed. Thereby, from the position in the closed state shown by the broken line in FIG. 4 to the position shown by the solid line,
The pins and the slider 5 to which these pins are attached are moved to the right (diagonally upward in FIG. 4) by the distance d.

Therefore, in FIG. 1, the crank 41 rotates counterclockwise via the arm 42 (rotates counterclockwise), and the piston rod 32 and the piston 31 move to the left. The spring 33 is compressed (the elastic energy stored by the compression of the spring 32 becomes a self-closing force later). In this case, as shown in FIG. 2, a check valve 31A provided on the piston 31
Is opened, and the oil in the left cylinder chamber 30L can smoothly (forward) flow into the right cylinder chamber 30R.

In this case, in particular, in FIG. 1, the stroke (2 to 3 times)
3) Since xd acts on the piston rod 32 and the piston 31, the spring 33 can secure a compression amount of a length two to three times the fluctuation amount of the pin and the slider 5, and can also secure a large self-closing force. .

The door 2 is further opened greatly, and as shown in FIG. 5, when the door 2 is just opened at an angle of 90 degrees, one of the pins 51B fits into the stop groove 8A of the outer cam 8, so that The door 2 is temporarily stopped.
Needless to say, the door 2 does not stop without the stop groove 8A.

Next, when the door 2 is closed from this state, a certain amount of force is applied, that is, the pin 5 is removed from the stop groove 8A.
When the pin 51B is displaced rightward as compared with the closed state when the free state in which the pin 51B is disengaged from the stop groove 8A by applying a force to the door 2 to such an extent that the pin 1B disengages, the spring 33 is disengaged. Is compressed, the self-closing operation of the door 2 can be performed by releasing the stored elastic energy.

That is, when the spring 33 is restored to the original state, the piston 31 moves rightward in FIG.
3, the pushing force F to the piston 31 is increased by the crank 4 to 2 to 3 times (2 to 3) × F, and this large torque acts on the outer cam 8 via the pin 51B.
As a result, the door 2 can be reliably closed with a large self-closing force. In this case, the check valve 31A provided on the piston 31 acts to brake the self-closing operation through the automatic temperature correction mechanism 6, but the closing speed of the door 2 is suppressed and the door 2 is closed slowly but surely. Can be.

Therefore, according to this embodiment, even if the spring 33 has a small size and a small elastic force, a large torque (self-closing force) can be generated by the crank 4, so that the closer body 1A can be downsized. Thereby, it can be built in the thin door 2.

[0023]

As described above, according to the present invention, a cylinder having a self-closing means such as a small-sized and small-diameter spring or a braking means and a pin which comes into pressure contact with a cam fixed to the rotating shaft side of the door are provided. Since a booster such as a crank is provided between the slider and the provided slider, the torque (self-closing force) is increased by the booster.
It is possible to securely close a large and heavy door even if the closer is small, and the closer can be housed inside the door, and the appearance can be improved. It is also convenient in terms of cleanliness and appearance.

Further, according to the present invention, there is provided an automatic temperature compensating mechanism for appropriately adjusting the outflow amount of oil discharged from the cylinder in accordance with the ambient temperature change. Since the accompanying change in the viscosity of the oil can be automatically adjusted by opening and closing the valve, it is particularly convenient to use it as a double-door that is applied to a place in contact with the boundary with the outdoors.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a double door closer with a built-in door according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view showing the operation of the closer according to the present invention.

FIG. 4 is an explanatory view of the same.

FIG. 5 is an explanatory view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closer 2 Door 3 Cylinder 4 Crank (enhancement means) 5 Slider 6 Automatic temperature correction mechanism 7 Rotary shaft 8 Outer cam (heart cam)

Claims (1)

[Claims] 1. A door closing means which is provided inside a door which rotates about a rotation shaft fixedly and integrally fixed to a floor surface or a ceiling surface and uses a resilient force of a spring or the like to self-close a double-opening door. And a cylinder with a built-in door that includes a cylinder that brakes the closing operation of the door using fluid pressure, such as a crank connected at one end to a piston rod connected to a piston in the cylinder. A booster, a slider connected via an arm connected to the other end of the booster and having a pin attached thereto, a cam circumscribing the pin provided on the slider and fixed to the rotating shaft; A double door closer with a built-in door, comprising: an automatic temperature correction mechanism for appropriately adjusting an outflow amount of oil discharged from the cylinder according to a change in ambient temperature.