JP2001182427A - Opening-closing mechanism of door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sudden closing, and to restrain generation of a sound and vibration by imparting resistance to a door just before completely closing the door. SOLUTION: In this opening-closing mechanism of a door 2 for opening and closing by rotating an opening part of housing furniture, the door 2 is supported in the rotational center by a hinge 3, and is energized in the closing direction by a spring. A shock absorber 5 for imparting resistance to closing motion by abutting against an inside surface of the door 2 in the closing vicinity of the door 2 is embedded and installed in a frame body 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing mechanism for furniture and the like, particularly to a door automatically biased in a closing direction.
The present invention relates to a mechanism for suppressing a sudden movement in a closing direction near a completely closed door and closing the door quietly.

[0002]

2. Description of the Related Art Conventionally, for doors such as furniture,
Some hinges with a spring bias the door in the closing direction. If you release your hand when closing the door, it will hit the frame vigorously, especially at the final closing, causing loud noise and vibration.

If the hinge spring is set weak, the door may not be closed properly and the door may not be held firmly in the closed position.

[0004] There is a door closer, not a furniture door, that automatically closes the door at the entrance of the house, which contains a spring and shock absorber and closes the door through a link. This door closer is relatively large and is not suitable for opening and closing doors of furniture, and the shock absorber generates resistance force in a wide angle range of the door, so that the door opening and closing time becomes longer.

The present invention has been proposed to solve such a problem.

[0006]

According to the present invention, there is provided a door opening and closing mechanism for opening and closing a door by rotating an opening, wherein the means for supporting a center of rotation of the door so as to be freely rotatable with respect to a frame, and closing the door. And a shock absorber attached to the frame body and abutting against the inner surface of the door near the closing of the door to apply braking.

In the present invention, the shock absorber is embedded inside the frame, and the push rod of the shock absorber is configured to contact the inner surface of the door from a substantially vertical direction.

[0008]

According to the present invention, the shock absorber applies resistance immediately before the door is completely closed, and the door can be closed quietly, thereby preventing the generation of noise and vibration when the door is closed. Since the resistance is applied only immediately before the door closes, the opening and closing time of the door does not become long. In addition, the opening and closing mechanism is small and easy to mount, and does not reduce the effective internal volume of the storage furniture and the like, especially when the shock absorber is embedded in the frame.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an optimal embodiment of the present invention will be described.
Description will be given based on the drawings.

In FIG. 1, an opening / closing door 2 attached to an opening of a storage furniture 1 is supported on a frame 4 at upper and lower portions on one side by hinges 3 with springs, respectively. Although only one door 2 is shown in the figure, there is usually a pair of left and right doors.

The hinge 3 with a spring has a spring therein, and urges the door 2 in the closing direction by the force of the spring. Therefore, the opened door 2 is automatically closed by the force of the spring.

As shown in FIG. 2, when the door 2 is closed, it comes into close contact with the end face 4A of the frame 4 of the storage furniture 1. A part of the end face 4A of the frame 4 is located at the tip of the door 2 where the door 2 rotates.
A buffer 5 is attached to the frame 4.

The mounting position of the shock absorber 5 is preferably at a position where it comes into contact with the door 2 on at least the rotation center side from the vicinity of the center of the door 2 which rotates about the hinge 3.

The shock absorber 5 is housed and fixed in a mounting hole 6 provided in the frame 4 and, when the door 2 is open, a part of the push rod 7 of the shock absorber 5 as shown by an imaginary line. Are mounted so as to protrude from the end face 4A of the frame body 4. The push rod 7 is urged in a protruding direction by a spring (not shown) inside the shock absorber, but is pushed in by coming into contact with the inner surface 2A of the door 2 from a substantially vertical direction, and at this time, a piston (not shown) inside the shock absorber moves. However, the movement of the piston is suppressed by the resistance of the fluid, and the door 2 is prevented from closing suddenly.

However, the force in the extension direction of the shock absorber 5 is set to be smaller than the urging force in the direction in which the spring-loaded hinge 3 closes the door 2.

The shape of the shock absorber 5 is cylindrical. Therefore, the shock absorber 5 can be easily mounted in the mounting hole 6 by forming the mounting hole 6 into a hole having a circular cross section by drilling or the like. .

When the thickness of the frame 4 is equal to or less than the diameter of the shock absorber 5, the shock absorber 5 is attached to the lower surface of the frame 4 using a bracket or the like without making a hole. You can also.

When the door 2 is automatically closed by the hinge 3 with the spring in this manner, the push rod 7 of the shock absorber 5 comes into contact with the inner surface of the door 2 from a substantially right angle just before the door 2 is completely closed. , The movement of the door 2 is braked, so that the door 2 closes slowly.

For this reason, it is possible to prevent generation of a loud noise or vibration when the door 2 is closed. Further, since the buffering action on the door 2 occurs only immediately before the door 2 is completely closed, there is no resistance in other operating regions of the door 2 and the opening / closing speed of the door 2 does not decrease.

By changing the position at which the shock absorber 5 is mounted in the direction of the radius of rotation of the door 2, the angle of the door 2 at which the shock is started can be freely adjusted. Further, by changing the number of the shock absorbers 5 in accordance with the weight and size of the door 2, an optimum shock absorbing action can be exhibited.

In the present invention, the size of the furniture is not impaired, and the interior volume of the furniture is reduced, especially when the shock absorber 5 is embedded in the frame 4, which is smaller than the conventional door closer. Nor. Further, when the door 2 is opened, only a part of the push rod 7 protrudes from the end face 4A, so that the shock absorber 5 does not interfere.

The present invention is not limited to the above embodiment. For example, a spring and a hinge may be separately provided instead of a hinge with a spring. Various changes can be made within the spirit of the idea.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the inside when the door is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage furniture 2 Door 3 Hinge with spring 4 Frame 4A End surface 5 Shock absorber 6 Mounting hole 7 Push rod

Claims (2)

[Claims] 1. A door opening and closing mechanism for opening and closing a door by rotating an opening, wherein: a means for freely supporting a center of rotation of the door with respect to a frame; and a means for urging the door in a closing direction. And a shock absorber attached to the frame body and abutting against an inner surface of the door near the closing of the door to apply braking. 2. The door opening and closing mechanism according to claim 1, wherein the shock absorber is embedded inside the frame, and a push rod of the shock absorber abuts an inner surface of the door from a substantially vertical direction.