JPS62170693A - Revolving lifting 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 the Invention The present invention relates to external gates such as building garage doors.

A rotating lift door known from the prior art patent publication No. 57-53507 generally applies a biasing force within the rotation plane of one support arm or within a nearby plane parallel to this plane, and A method has been proposed to increase the gravitational moment shown by .

Problems to be Solved by the Invention The present invention solves the problem in a plane (
It attempts to counteract the gravitational moment of a rotating part such as a door by applying a rotation biasing force in a plane parallel to the axis X (described later).

Means and Embodiments for Solving the Problems The configuration of an embodiment of the rotating elevator door according to the present invention will be described with reference to a drawing.The axis of rotation X is a straight line that intersects a constant ground plane and a vertical plane. ,
Two shaft supports 41 and 42 are arranged on the axis X, and one end 21a and 22a are supported by the two shaft supports 41 and 42,
The two support arms 21 and 22 are connected between the open ends of the shaft.
In a rotary lift door consisting of a decorative board (door) 1 installed in a direction intersecting with the A spring 61 is loaded into the support 31 and is urged to rotate along the cross section of the support 31. One end 61a of the spring 61 is engaged with a member integrated with the support 31, and the other end 61b is engaged with a member integrated with the support 31. , with a support axis Y parallel to the support column 31, engages with a rotating shaft 71a of a horizontal gear 71 supported by a hair ring 31a fixed to the support column 31;
One end 21 of the support arm 21 on the same side as the above-mentioned one pillar 31
A vertical gear 81 is fixed coaxially with the axis The structure is characterized in that the vertical gear 81 is rotated in a direction opposite to that of the door 1, the support arm 21, etc. due to gravity. Note that a stopper that limits the rotation stroke of the support arms 21 and 22 to a range of about 90° between the substantially horizontal direction and the substantially vertical direction is not shown for the sake of clarity. In addition, digits 2 and 1 of the code numeral used in this specification indicate the left and right sides of the support arm system, and there are some parts that are not shown.
They appear identical to those of the pond system.

Operation Since the present invention is constructed as described above, the support arms 21 and 22, and thus the vertical gear 81, rotate around the axis X as the door 1 is opened and closed. Since the vertical gear 81 is integrated with the horizontal gear 71, the horizontal gear 71 further rotates around the support axis Y, which is parallel to the support support 31. Since the horizontal gear 71 is separately urged to rotate around Y by a spring 61, the rotation by the spring 61 in the defensive direction and the gravitational moment caused by the rotating parts such as the door 1 and the support arm 21. The vertical gear 81 and the horizontal gear 71
If the engagement point is set in opposing directions, the spring 61 will receive the maximum force when the door 1 is closed. In other words, the gravity of the rotating part relative to the axis X of the door 1 can be reduced to an almost negligible level. As the door 1 opens, the gravitational moment of the rotating parts decreases, but the biasing force of the spring 61 also decreases, so the gravitational moment of the rotating parts such as the door 1 decreases throughout the entire rotation stroke of the door 1. Since the opening/closing operation of the door is relative, as it is almost equal to the biasing force of the spring 61, if the ground surface S and the door L are replaced, it is natural to use the support arm from the previous implementation or 1 as a support, and to support the support. An embodiment in which the biasing spring 61 is loaded in the support arm 21 is possible.
1, if you use the side wall etc., the support 3 can be used as an independent ball.
Since the existence of 1.32 is not required, the mechanism of the entire rotating lift door can be made simpler (although,
Even in this case, there is no change in the fact that the side walls or the support columns 31 and 32 have substantially the same function. As a method for upwardly biasing a rotating part such as the door 1, examples using a linear spring or a rotational biasing spring coaxial with the axis X are already known, but a rotational biasing spring coaxial with the axis 61, the spring 6 is placed at the same location as the shaft fulcrums 41 and 42.
There is a disadvantage that the volume of 1 is added, and the structural volume of this part in the axis X direction increases. It is not difficult to fit the gear engagement according to the invention into a small volume. Furthermore, when an electric motor is provided, disposing the electric motor coaxially with the axis X also increases the structural volume in the direction of the axis X, which limits the permissible width of the items stored in the refrigerator. When an electric motor is attached in a direction intersecting the axis Since the tension spring 61 may be arranged coaxially, there is almost no need to increase the structural volume. In this case, it is clear that if a linear spring is used as the spring 61, the structural volume increases accordingly.

Also, the rotational displacement angle of the spring 61 is 90° on the school road.
Therefore, it is also possible to apply a torsion bar of four sizes as the spring 61. In this case, for example, the bearing that supports the support shaft of the horizontal gear 71 is connected to the torsion bar spring 61 and the horizontal gear 71. If the fit is perfect, it is obvious that the hair ring that supports the spring 61 can be used as a bearing that supports the horizontal gear 71. Also, it is of course possible to use a hollow torsion bar instead of a rod-shaped torsion bar. .

By doing so, it becomes possible to insert a separate drive shaft of the horizontal gear 71 into the axis of the torsion bar, which is advantageous when an electric motor drive mechanism is also provided. Further, when a torsion bar or the like is used as the spring 61, there is an advantage that the support arms 21, 22 and the columns 31, 32, which serve as spring storage bodies, can be made slender.

Effects of the Invention According to the present invention, when the rotating elevator door is driven by an electric motor,
A compact rotating lift door that is easy to apply can be obtained.

[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 the vicinity of the pivot point of FIG. 1. l... Decorative board (1) 21, 22... Support arm 21a, 22a... One end 31, 32... Support column 41, 42... Axis Fulcrum 61, 62... Spring 71, 72... Horizontal gear 81, 82... φ Vertical gear X... Axis Y...・Support shaft

Claims (3)

[Claims] (1) 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 of the shaft is supported by the two shaft fulcrums. two support arms that are rotatable in a plane that intersects with the support arms; a decorative plate that is installed between the open ends of the two support arms in a direction that intersects with the support arms; and the two pivot points. In a rotary lift door consisting of two columns supporting the ground against the ground, at least one of the columns is loaded with a spring that is biased to rotate along the cross section of the column, and one end of the spring is connected to the column. The other end is engaged with a rotating shaft of a horizontal gear supported by a bearing fixed to the pillar, and the other end has a bearing shaft parallel to the pillar, and the other end is engaged with a rotating shaft of a horizontal gear supported by a bearing fixed to the pillar. At one end of the support arm on the same side as the first column, a vertical gear is fixed coaxially with the above-mentioned shaft, and the above-mentioned horizontal gear and vertical gear are engaged to provide shaft transmission, and the rotation of the above-mentioned spring is The rotary lift door is characterized in that the direction in which the vertical gear rotates is opposite to the direction in which the vertical gear rotates due to the gravity of the decorative board. (2) Replace the ground surface on which the support is planted and the decorative board installed between the open end of the support arm, and use this support arm as the second support and the second support as the second support arm, respectively. The rotary lift according to item 1, characterized in that the rotary lift is made to function. (3) The rotating elevator door according to item 1 or 2, wherein the spring is composed of a torsion bar or an elastic rod-shaped tube.