JPS6378986A - Electromotive rotary rising and falling door - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to external gates for buildings, particularly garage doors.

[Conventional technology]

The applicant of the present application filed a patent application on July 28, 1988 for a rotary lift door that is stationary in a closed or open state, and in which the point of force of the rotary lift door, which is in a substantially balanced relationship, is moved by electric power. Further, a rotary elevator door in which a support arm of a decorative board (door) projects from the lower end of the door parallel to the back alley has been proposed in Japanese Utility Model Application Publication No. 61-26511. If you try to combine the technology of the above-mentioned cited application with the product mentioned above, the center of gravity of the rotating parts such as the door and support arm will move in the direction in which the door in the opening limit further extends and rotates (in the opposite direction of the closing door). Since a gravitational moment is required to rotate the device in the direction of 1), it is difficult to combine the above techniques.

[Problem that the invention seeks to solve]

The technical problem of the present invention is to provide concrete means for solving the above-mentioned conventional difficulties.

[Means and Embodiments for Solving Problems] The configuration of an embodiment of the electric rotating lift door according to the present invention will be described with reference to a drawing. an axis X, and a second axis fulcrum 41 disposed on the axis
42, and one end 21a of the two pivot points 41 and 42.
22a is pivotally supported and is rotatable in a plane intersecting the axis X, and the two support arms 21 and 22 intersect between the open ends of the two support arms. In a rotary lift door consisting of a decorative board (door) 1 installed across the direction, the door 1 and the rotating parts K such as the support arm 21 move along the axis
An antagonistic moment larger than the gravitational moment is applied by the resilient members 71 and 72 in the coaxial opposite direction to the gravitational moment, and the antagonistic moment becomes zero as the rotating part rotates several tens of degrees to close the door. After that, the rotating part (1) is configured such that the rotating part (K) has a gravitational moment that stably moves in the direction of closing the door even by its own gravity. .The support arm rotation stroke is 90° between the approximately horizontal direction and the approximately vertical direction.
However, the stopper is not shown for clarity. Further, reference numerals 61 and 62 are biasing members that reduce the gravitational moment exerted by the rotating portion K in the door closing direction. The second digit 2.1 of the code number 7 used in this specification indicates the left and right sides of the support arm system, and there are some parts not shown in the drawings.
・82 is 19 pieces that are integrated with the rotating part.

[Effect]

Since the present invention has the above configuration, strong gravitational moments l and C are exerted on the rotating parts when the door is closed, but the biasing members 61 and 6
2 is also subjected to a large displacement due to the door closing/F force action on the rotating portion, so the gravitational moment on the rotating portion is substantially canceled out by the biasing members 61 and 62. Immediately before the opening limit, the center of gravity of the rotating part I (is located on the plane 171 and inward of the property from the axis However, the 1↑ force member 61
・Changing the point of action on the rotating part K of 62 by 1 force (meaning changing the length of the arm of the moment caused by the biasing member, that is, the road side between the biasing member and the axis X).
, If you try to open the door automatically (1'M) 1, the door will not be able to be closed and will be at the bottom. In other words, the biasing force applied to the rotating part K in the extended rotating direction (anti-closing door direction) at the opening limit is not dependent on the gravity of the rotating part itself, but is applied to the biasing member 61.
・It is desirable to use only the remaining biasing force of 62. As a result, elastic members 71 and 72 are used. )
The rotating portion K of the opening limit can be urged to extend and rotate only by the urging members 61 and 62, and therefore automatic opening and closing by an electric motor is also possible. As a matter of course, the amount of displacement of the resilient member is expressed as the rotation angle seen from the axis It is sufficient to exceed the angle (expressed as degrees). The resilient members 71 and 72 may be compression or tension springs as shown in FIG. 2, but may also be torsion springs concentric with the axis X.

〔Effect of the invention〕

According to the present invention, even if the support arms 21 and 22 of the door l are close to the ground surface, it is possible to obtain an electric rotary lift door in which the points of action of the biasing members 61 and 62 are electrically moved. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of an embodiment of an electric rotary lift door according to the present invention, and FIG. 2 is a partially enlarged view of FIG. 1. 1...... Decoration 1 side (door) 21, 22... Support arm 21a, 22alφ one end 41, 42... Pivot support cut X......・Axis K・・・・・・φ rotating part

Claims (1)

[Claims] The axis of rotation is a straight line where a horizontal plane and a vertical plane close to the earth's surface intersect. In a rotary elevator door comprising two support arms that are rotatable in intersecting planes and a decorative plate that is installed between the open ends of the two support arms in a direction that intersects the two support arms. , applying an antagonistic moment to the rotating parts such as the decorative plate and the support arm in a coaxial direction opposite to the gravitational moment by means of a resilient member, which is larger than the gravitational moment with respect to the axis at the opening limit position indicated only by gravity; After the antagonistic moment becomes zero as the rotating part rotates several tens of degrees to close the door,
An electric rotating lift door characterized in that the rotating part has a gravitational moment that stably moves in the door closing direction only by the gravity of the rotating part itself.