JPS62182387A - Revolving elevating door - Google Patents

Abstract

(57) [Summary] 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 is applied to external gates for buildings, particularly garage doors.

Conventional technology When opening a rotating lift door, the support arm of the door becomes almost horizontal, so the weight of the door creates a strong gravitational moment against the rotation axis of the door, which increases the operating force to open the door from the moment the door is opened. It becomes heavy. For this reason, a number of means for canceling the gravitational moment have been proposed, and the present invention provides a new and advantageous embodiment.

Problems to be Solved by the Invention The method of loading the biasing member into the support arm of the door is disclosed in the patent application filed in 1983.
Although disclosed by the applicant in No. 0-52767, it is difficult to obtain design specifications for a biasing member that can fit into an appropriate storage space because a heavy load is required for a heavy gate made of a mold or the like. was there. According to the present invention, this problem can be solved by adding a simple configuration.

Means and Examples for Solving Problems A straight line where a constant ground surface height and a vertical plane intersect is defined as an axis of rotation X, and two pivot supports 41 and 42 disposed on the axis Second axis fulcrum 41
・Two support arms 21 and 2 whose one ends 21a and 22a are pivotally supported by 42 and are rotatable in a plane intersecting the axis X.
2, and a decorative IF installed between the open ends of the two support arms 14 in a direction intersecting the two support arms 21 and 22.
i.
, a biasing portion t that provides a moment in the anti-gravitational direction that counteracts the gravitational moment exhibited by the rotating portion K such as the support arm 21.
In the rotary lift door consisting of arms 61 and 62, the biasing member 62 (Cil) is loaded into at least one of the support arms 22 (21), and one working end (stripe member) of the biasing member 62 is loaded. When a connecting member such as or a rack is integrally engaged with the urging member 62, the connecting member is considered to be included as the urging member 62. It is wound around the large ring 72'' of the stepped idler wheel 72, and the small wheel 72'' of the idler wheel 72 is wound around the fixed ring 82 coaxial with the axis X.
A stopper that wraps around and engages with the support arms 21 and 22 and limits the rotational stroke of the biasing support arms 21 and 22 over a range of 90° from approximately horizontal to approximately vertical is not shown for the sake of clarity. Furthermore, the same technique can be achieved even if the idler wheel 72 and the fixed ring 82 are engaged by gears instead of the wrap-around engagement. As used herein, the second digit 2.1 designates the left and right sides of the support arm system, some of which are not shown, but which appear identical to those of other systems.

Operation Since the present invention has the above configuration, as the door l moves from the open position to the closed position, the small wheel 72'' of the idler wheel 72 receives the drive from the fixed wheel 82 and begins to rotate.The small wheel 72 The large wheel 72' that is integrated with the door 72' is at its maximum bias.In this state, a residual load is applied in advance to offset the weight of the door 1, and to prevent the door 1 from falling by itself when the door is opened. If the biasing member 62 is designed so that the biasing member 62 remains in place, the door 1 can be opened and closed with extremely light operating force. The difference from the case where the large ring 72' is wound is obvious, and although the amount of displacement is larger when the large ring 72' is wound, a biasing member with a low load can be used. In other words, it is possible to combine it with heavy doors made of molds, etc.

Effects of the Invention According to the present invention, an advantage of an internal rotary lift door with support arms for biasing members 61 and 62 (only the pivot points 41 and 42 can be directly attached to the side wall, etc.;
The pillars that support the ground to the ground can be made unnecessary or simple. ) In addition to this, a boosting mechanism is added with a simple configuration, so it is possible to add benefits that can be applied to heavy doors.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part of an embodiment of a rotary elevator door according to the present invention, and FIG. 2 is a side sectional view of FIG. 1. 1... Decorative board (door) 21, 22...--Support arms 21a, 22a--One end 31, 32...#φ, Support 41, 42...Axis Fulcrum 61, 62...Biasing member K...Rotating part Working ends 71, 72...Idle wheels 71', 72'...Large wheels 71'', 72''...Small wheels 81, 82...Fixed wheels

Claims (1)

[Claims] The axis of rotation is a straight line that intersects a constant ground plane and a vertical plane, and two shaft fulcrums are arranged on the axis, and one end is pivotally supported by the two shaft fulcrums, and the shaft intersects with the above axis. between two support arms that are rotatable in a plane and open ends of the two support arms;
A decorative board installed in a direction that intersects the second support arm, a second support supporting each of the two pivot points on the ground surface, and the gravity exerted by the rotating parts of the decorative board, support arm, etc. In a rotating elevator door comprising a biasing member that provides a moment in an anti-gravity direction that counteracts the moment, the biasing member is loaded into at least one of the support arms,
One working end of the biasing member is wound around a large ring of a stepped idler wheel pivotally connected to the rotating part, and a small wheel of the idler wheel is wound around or around a fixed ring coaxial with the shaft. A rotating lift door characterized in that the biasing member engages with a gear, and the other working end of the biasing member engages with the rotating portion.