JP3165336B2 - Hinged door closer with limited opening angle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torsion coil spring for generating a self-closing force for closing an opened door,
The present invention relates to a hinged door closer having a door opening angle restriction, comprising a hydraulic mechanism for generating a braking force opposing a self-closing force of a door.

[0002]

2. Description of the Related Art As one of typical hinge-type door closers, as shown in FIG.
101, a spring hinge, which contains a self-closing spring mechanism and a hydraulic mechanism for closing door operation braking, respectively,
2. Description of the Related Art There is known a hydraulic damper hinge.

In the hinge type door closer, when the door is closed, the door is automatically closed by energy stored in a torsion coil spring of a self-closing spring mechanism. In this case, hydraulic pressure opposing the stored energy is used. In order to gradually release the energy of the torsion coil spring and prevent a rapid closing operation, the closing speed can be adjusted by a flow rate adjusting valve of the hydraulic mechanism.

In the hinge type door closer having such a structure, the force for closing the door is generally only the elastic force of the torsion coil spring, and the closing force and the opening force are increased as the opening angle of the door is increased. Becomes large, which causes inconvenience in the door opening operation. For example, as a torsion coil spring incorporated in the spring hinge, two types of torsion coil springs are provided, and an appropriate clutch mechanism is attached, thereby opening the door. It is known that a spring is configured such that the spring force gradually increases from about 60 degrees to about 180 degrees (maximum opening angle) from a maximum of about 10 degrees to a minimum of about 60 degrees after opening of the door.

[0005]

However, in the hinge type door closer having such a structure, the self-closing force of the door is temporarily reduced during opening to the maximum opening angle. Therefore, the door is greatly opened by a gust or other large force, and the door is forcibly opened beyond the allowable maximum opening angle, hitting a wall or the like, and the door and the wall may be broken.

In view of the above circumstances, the present invention breaks doors, walls, and the like even if a force exceeding the maximum opening force acts on the door or an unexpectedly large force such as a gust acts on the door. It is an object of the present invention to provide a hinge type door closer with high reliability.

[0007]

That is, the present invention provides a spring hinge provided with a spring mechanism for generating a self-closing force for closing an opened door, and a control system which opposes the self-closing force when the door is closed. hydraulic damper Ding equipped with a hydraulic Organization that generates power
A hinged door closer comprising a pair of a door and a hydraulic mechanism of the damper hinge , wherein a piston of a hydraulic mechanism connected to the door-side hinge moves at an upper portion in a cylinder in which the piston moves in accordance with an opening and closing operation. By fixing a spring member such as a spring or a compression coil spring , the piston can be raised.
And a stop means for stopping the movement of the piston when the door is opened to the maximum allowable door opening angle. It is a thing.

[0008]

According to the present invention, even if the door is blown by the wind or is about to be opened beyond the maximum opening angle permitted by an unexpected external force, the stop means attached to the hydraulic mechanism is used.
The piston in the cylinder, which moves upward in conjunction with the opening operation of the door, collides with the stop means to prevent the upward movement, thereby preventing the door from being opened beyond the maximum opening angle. Can be. Further, according to the present invention, a back check means comprising a spring member such as a disc spring or a compression coil spring is provided, and when the door is opened beyond a predetermined opening angle when the door is opened, the opening force of the door is increased. Can be.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a hinge type door closer according to the present invention. The hinge type door closer is provided with a back check means 2 and a stop means 3 on a hydraulic damper hinge 1 containing a hydraulic mechanism. . In addition, 4 in the figure
Is a blade for fixing the hydraulic damper hinge 1 to the door frame 5,
Reference numeral 6 denotes a blade for fixing the hydraulic damper hinge 1 to the door 7. Further, in the hinge type door closer of this embodiment, a self-closing spring mechanism (not shown) is provided with two types of torsion coil springs and clutches as in the conventional case.

The back check means 2 has a structure in which a compression coil spring 20 is fixedly provided as a spring member in an upper portion of a cylinder 12 in which a piston 11 of a hydraulic mechanism connected to the door 7 moves in accordance with an opening operation. I have. The spring member serving as the back check means may be, for example, a disc spring or an elastic body such as polyurethane.

In this embodiment, the stop means 3 comprises a projection 13A projecting from the center of the lower surface of the closing lid 13 attached to the upper part of the cylinder 12 and through which the rotary shaft 14 penetrates. Is opened to the maximum allowable door opening angle (e.g., 180 degrees in this embodiment), the piston 11 abuts to prevent further movement.

Therefore, according to this embodiment, as shown in FIG. 2, when the door 7 is to be opened beyond the opening angle θ, for example, around 130 degrees, the door 7 is opened.
The upper end surface of the piston 11 that rises in conjunction with the lower end of the compression coil spring 20 contacts the lower end of the compression coil spring 20, and the upward movement is braked by the elastic force. Because

Further, even if the door 7 is greatly opened due to a gust of wind and is about to open beyond the maximum allowable angle, the piston 11 which rises in conjunction with the opening operation of the door 7 as shown in FIG. Is a projection 13A on the lower surface of the closing lid 13.
As a result, the door 7 is not further opened, and it is possible to prevent the door, the wall, and the like from breaking.

[0014]

As described above, according to the present invention, even if the door is opened by exceeding the allowable maximum opening angle by the wind or by an unexpected external force, the door can be opened. The stop means attached to the hydraulic mechanism causes the piston in the cylinder, which rises in conjunction with the opening operation of the door, to collide with the stop means and is prevented from rising, so that the door exceeds the maximum opening angle. It is possible to prevent the doors, walls, and the like from being opened and breaking the doors and the like, thereby providing a highly reliable one.

Further, according to the present invention, a back check mechanism comprising a spring member such as a disc spring or a compression coil spring is provided, and when the door is opened beyond a predetermined opening angle when the door is opened, it is not abrupt but gradually. In other words, the force required to open the door when the door is opened, as in the case of, for example, one having a clutch mechanism, is partially increased. Even when the door is configured to be lowered, it is possible to prevent the door from being suddenly and largely opened by the gust of wind or the like, and to provide a highly safe door.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a hinge type door closer according to the present invention.

FIG. 2 is an explanatory diagram showing an open / closed state of a door.

FIG. 3 is a cross-sectional view showing the operation of a stop means.

FIG. 4 is a schematic perspective view showing a door and the like to which a conventional hinged door closer is attached.

FIG. 5 is a graph showing the operation of the clutch mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic damper hinge 2 Back check means 3 Stop means 5 Door frame 7 Door

Claims (2)

(57) [Claims] [Claim 1] and the spring hinge provided with a spring mechanism that generates a self-closing force for closing the opened door, the hydraulic machine structure that generates a braking force to counter the self-closing force at the time of door closing <br A hinge type door closer comprising a pair of a hydraulic damper hinge and a hydraulic mechanism of the damper hinge , wherein a piston of a hydraulic mechanism connected to the door hinge moves according to an opening / closing operation. By fixing a spring member such as a disc spring or a compression coil spring at the upper part in the cylinder, the upward movement of the piston is controlled.
Back check means for preventing the door from suddenly opening by moving, and stop means for stopping the movement when the piston abuts when the door is opened to the maximum allowable opening angle. Hinged door closer with limited opening angle. 2. The spring mechanism comprises a spring hinge.
As a torsion coil spring built into the
With appropriate clutch means.
2. The door-opening angle-limited signature according to claim 1, wherein:
Number door closer.