JPH0469276B2 - - Google Patents

Description

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

PRIOR TECHNOLOGY A number of rotating elevator doors have been proposed in recent years, but when trying to open them from inside a property with a car stored in them, the problem is that it is difficult to open them due to the amount of effort required. Utility Model Application No. 60-23574 has been proposed to solve this problem, but although the handle cannot be stored when not in use, the present invention aims to make the mechanism more compact when looking at the rotating lift door as a whole. It is.

Problems to be solved by the invention: To facilitate the opening and closing of a rotating lift door from inside the property,
The purpose is to reduce the apparent weight of the rotating part, and also to make the structure of the support arm and support column unnecessary or slender.

Means and Embodiments for Solving the Problems The configuration of an embodiment of the handle of the rotating elevator door of the present invention will be described with reference to a drawing.A straight line in a horizontal plane is the axis of rotation The second axis fulcrum 41,
42, and one end 21a at the two pivot points 41, 42,
22a is pivotally supported, and in a plane intersecting the axis X,
Two support arms 21 and 22 are rotatable over a range of approximately 90° from approximately horizontal to approximately vertical.
and between the open ends of the two support arms 21 and 22,
A decorative plate (door 1) installed across the second support arms 21 and 22, and a stopper 5 that limits the rotation stroke of the second support arms 21 and 22.
1, 52, the support arms 21, 22 are connected to the pivot points 41, 52 when the door is closed.
Extension parts 31 and 32 extend in one direction between the rear and substantially upper parts of 42, and springs 61 and 62 are fitted into the extension parts 31 and 32.
1 and 62 are fixed shafts 41a and 4, which are coaxial with the shaft supports 41 and 42 and integrated with the ground surface.
2a, by rotation by a flexible strip or rack-and-pinion engagement, and the springs 61 and 62 are biased as the door 1 rotates to close. It is structured as follows. Note that the second digits 2 and 1 used in this specification indicate the left and right sides of the support arm system, and although some are not shown, they appear the same as those of other systems.

Function Since the present invention has the above configuration, the springs 61 and 62 that reduce the gravity of the rotating parts such as the door 1 and the support arms 21 and 22 are connected to the columns, the support arms 21 and 22, the pivot point 41, 42, it is possible to make the support arms 21, 22 and the support pillars compact without congesting them by using spiral springs, etc. (the shaft fulcrums 41, 4
The second support can be omitted by using a wall, etc. ). Furthermore, in general, since the weight of the handle portion acts as a counterbalance to the weight of the rotating portion, the load specification of the biasing springs 61 and 62 can be reduced. Also handle (extended parts 31, 32)
Since the support arms are not structured to be housed in the support arms 21 and 22, the structure of the support arms can be made slender considering only the strength (for example, the support arms 21 and 22 may be elastically curved). Also, since there are no members separately included in the support arms 21 and 22, there is no need to consider the adverse effects on the included members.) FIGS. 2a and 2b show examples of different internal structures of the biasing mechanism. A is due to the winding of the strip and a tension spring, and b is due to a rack and pinion and a compression spring.

Effects of the Invention According to the present invention, the handle (extension portions 31, 32) can be pushed down (pull up) or pulled (pushed) inward from the property by a simple action, even when the car is stored. Able to open and close the rotating lift door.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a rotary lift door to which an embodiment of the handle of a rotary lift door according to the present invention is attached, and FIG. 2 is a perspective view of a main part of a rotary lift door according to the present invention, and FIG. 1... Decorative board (door), 21, 22... Support arm, 21a, 22a... One end, 31, 32... Extension portion, 41, 42... Axis fulcrum, 41a, 42a...
... Fixed shaft, 51, 52 ... Stopper, 61, 6
2... Spring, X... Axis.

Claims (1)

[Claims] 1 A straight line in a horizontal plane is the axis of rotation, two fulcrums are arranged on the axis, one end is pivotally supported by the two fulcrums, and the rotation axis is approximately horizontal in a plane intersecting the above-mentioned axes. two support arms that are rotatable over a range of approximately 90° in a substantially vertical direction from In a rotary elevator door consisting of a decorative plate and a stopper that limits the rotation stroke of the second support arm, the support arm is extended in one direction between the rear and substantially above the pivot point when the door is closed. A spring is fitted into the extended part, and the end of the spring is attached to a fixed shaft that is coaxial with the above-mentioned shaft fulcrum and is integrated with the ground surface. A handle for a rotating elevator door, characterized in that the spring is associated with the user by rack-and-pinion engagement or the like, and is biased as the decorative panel rotates to close the door.