JPH0446076Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to external gates for buildings, particularly garage doors.

Prior Art The present invention was filed in a patent application filed in 1983 by the same applicant as the present invention.
This is a proposal for improvement of No.-221687. That is, in the cited application, racks and pinions are used as structural members, but gears generally require precision and have the disadvantage of being relatively expensive.

Problems to be Solved by the Invention The present invention aims to improve these conventional problems.According to the present invention, the structure is simplified and the cost is reduced.

Means and Embodiments for Solving Problems The configuration of an embodiment of the shaft-lifting and rotating lift door according to the present invention will be described with reference to a drawing. Two pivot points 41 and 42 respectively arranged corresponding to both ends of the width of the frontage.
and one end 2 at each of the two pivot points 41 and 42.
1a, 22a are pivotally supported, and two support arms 21, 2 are rotatable in a plane intersecting the axis X.
2, a door 1 installed between the open ends 21b and 22b of the two support arms 21 and 22 in a direction intersecting each of the two support arms 21 and 22, and the two pivot points. Two pillars 31, 32 planted on the ground surface S in the vertical direction passing near each of the pillars 31, 42, and the two pillars 3.
1 and 32 so as to be slidable and loosely fitted above a certain ground height in the longitudinal direction of each of the two shaft fulcrums 4.
Two pivot blocks 41a, 42a each have one of the above-mentioned door 1, two support arms 21, 22, etc. installed in the two pivot blocks 41a, 42a, A tension force is applied between the rotating portion 5 and the pivot blocks 41a, 42a concentrically with the pivot points 41, 42, which substantially counteracts the gravitational moment that the rotating section 5 exhibits with respect to the axis X. In a shaft-lifting/rotating door comprising a biasing means such as a spiral spring, one end 21a, 22a of each of the two support arms 21, 22 is connected to a cylindrical column concentric with each of the two shaft supports 41, 42. 21c, 22c shape, one end thereof is engaged with the surface of each of the respective one cylinder 21c, 22c, and the winding thereof increases as the rotating portion 5 rotates upward with respect to the axis X. By winding the surfaces of the columns 21c and 22c in the direction in which the columns 21c and 22c are drawn, and engaging the other ends above the columns 31 and 32, the ropes 61 and 22c are rigid in the longitudinal tension direction.
The structure is characterized by the fact that 62 is loaded.

In addition, 71 and 72 are stoppers that limit the rotation stroke of the support arms 21 and 22 from the substantially horizontal direction (when the door is closed) to the substantially vertical direction (when the door is opened);
Numeral 82 is a locking piece that restricts the downward movement of the shaft support blocks 41a and 42a. Also, the second digit 2,1 used in this specification indicates 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-described structure, when the door 1 is closed, the support arms 21 and 22 are in a substantially horizontal direction (in contact with the stopper), and the pivot blocks 41a and 42a are connected to the column 31. , 32, which is the lowest limit in the vertical direction (it is said to be above a certain ground level). In this state, support arm 2
Cylinder 21c, 2 at one end 21a, 22a of 1, 22
Since the cable bodies 61 and 62 are tightened from above on the 2c-shaped surface, when the door 1 moves in the door opening direction (upward) and the cylinders 21c and 22c rotate around the axis X, the cable bodies 61 and 62 are wound around the surfaces of the cylinders 21c and 22c, and the shaft support blocks 41a and 42a are connected to the cable body 6.
1 and 62, the strut 3 receives a tensile force upward.
Go up 1,32.

It is preferable that the cables 61 and 62 have sufficient tensile strength to withstand the entire weight of the rotating portion 5 and the impact force. Furthermore, although the moment in the direction of gravity of the rotating part 5 is considerable, the pivot block 4 is
If countervailing reverse moments are enclosed in 1a and 42a (not necessarily in two pivot blocks, but the same can be done by enclosing them in one pivot block), door 1 The opening/closing operation force can be made extremely light. As a result, when the door is fully opened, the ground height of the pivot points 41 and 42 is (outer circumference of the cylinders 21c and 22c) x 1/4 compared to when the door is closed.
therefore, the opening height of the door 1 can also be increased by the same amount. The cable bodies 61, 62 are made of a material with bending elasticity.
The initial tension of 2 may be used as a biasing force f of a moment that counteracts the gravitational moment of the rotating portion 5. The engagement point of the other ends of the cables 61 and 62 is the support 3
1 and 32, and may be a beam of a covered garage, etc., within the scope of the same technical matter.

Effects of the invention According to the invention, it is possible to obtain a rotary elevator door with a simple structure, and it is possible to expand the market for high-roof vehicles, which has been difficult to achieve in the past.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of an embodiment of the shaft-lifting/lowering rotary lift door according to the present invention, and FIG. 2 is an enlarged side view of the main part of FIG. 1. 1... Decorative board (door), 21, 22... Support arm,
21a, 22a...one end, 21b, 22b...open end, 31, 32...support column, 41, 42...shaft support point, 41a, 42a...shaft support block, 5...rotation part, 61, 62... ... chord body, X ... axis, S ... ground surface, f ... biasing force.

Claims (1)

[Scope of utility model registration request] A straight line in the horizontal plane is used as the axis of rotation, and two shaft fulcrums are arranged on the axis corresponding to both ends of the width of the common frontage, and one end is pivotally supported by each of the two shaft fulcrums, and the above-mentioned shaft and two support arms that are rotatable in intersecting planes; a door that is installed between the open ends of the two support arms in a direction that intersects each of the two support arms; 2
two pillars planted on the ground in a vertical direction passing near each of the two shaft fulcrums; two pivot blocks each disposed with one of the two pivot supports, and provided within at least one of the two pivot blocks;
The moment of gravity exerted by the rotating parts such as the door and the two support arms with respect to the axis is substantially equal to each other;
For example, in the above-mentioned 2.
One end of each of the two support arms is shaped like a cylinder concentric with each of the two pivot points, and one end thereof is engaged with the surface of each of the cylinders, and By winding the surface of the column in a direction in which the winding increases as the column is rotated upward with respect to the axis, and engaging the other end above the column, the rope becomes rigid in the longitudinal tension direction. A rotating lift door with an axis that lifts and lowers.