JPS61221485A - Rotary lift 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 3 The present invention relates to external gates for buildings, particularly garage doors. .

Conventional rotary lift doors are already known in Japanese Patent Publication No. 57-53507, but if you try to apply the rotary lift door of the above-mentioned publication to an inverted U-shaped garage with a roof, for example, the front side of the ready-made garage There is an inconvenience that the support for the rotating lift door must overlap with the side pillar, and even if the pillar on the front side of the garage is also used as the support for the rotating lift door, currently, the pillars for the garage are different between manufacturers. There was a problem in that it was not standardized, and it was extremely difficult to install and store accessory parts such as biasing springs.

Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned drawbacks of the prior art.According to the present invention, 1. The disadvantage of the conventional method is that it is possible to simplify the structure around the conventional support.

5. Means and Embodiments for Solving the Problems The configuration of an embodiment of the rotating lift door according to the present invention is described with reference to a drawing. is an axis X, two shaft fulcrums 41 and 42 are arranged on the axis , two support arms 21φ22 that are rotatable over a range of approximately 90° from a substantially horizontal direction to a substantially vertical direction, and the second support arms 21◆2.
Between the two open ends 21bφ22b, the second support arm 2
In the rotary lift door consisting of a decorative board (1) 1 installed in a direction crossing 1 and 22, the above-mentioned two pivot points 41 and 4
Springs 61 and 61 are connected between the pivot points 41 and 42 of the second bracket pieces 31 and 32, which are hinged to the support arms 21 and 22 via the springs 2 and Ill, respectively.
62, respectively, to bias the rotating part 5 in the anti-gravity direction with respect to the axis 62 engagement points 61a and 62a
The second bracket pieces 31 and 32 containing the above are fixed vertically to the pillars 71 and 72 on the front side of the garage, and
The structure is characterized by keeping the height of 1.42 at a constant height above the ground. Note that S is the ground surface, and the support arm 21
・The stopper that limits the rotational stroke of 22 is not shown for the sake of clarity, and the second digit 2.1 used in this specification indicates the left and right sides of the support arm system, and is not shown in the drawings. There are some that are not, but they appear identically to those of other systems.

Since the operation and the uninvented structure are as described above, the axis X of the rotating part 5
As the springs 61-62 rotate with respect to , the springs 61-62 also displace at approximately equal angles, and the gravitational moments of the rotation of the rotating section 5, which operate as if they were integrated with the rotating section 5, are approximately equal to each other. If the design specifications of the springs 61 and 62 are determined in advance so that the springs 61 and 62 have such a moment, the opening/closing operation of the ill can be completed with a very small operating force over the entire stroke. Further, the means for fixing the shaft supports 41 and 42 to the ground surface S can be made of extremely fine material as long as the strength allows, and there is no need for any attached members (for example, springs 61 and 62) in the circumferential direction of the fine material. It can be simple and simple. More specifically, support arms 21 and 2 are attached to both ends of the bracket pieces 31 and 320 as small pieces.
2, and the - engagement points 61a and 62a of the springs 61 and 62 are respectively arranged, and the other engagement points of the springs 61 and 62 are connected to the support arms 21 and 22 or all (from the point of view of the moment, There is almost no difference on the top.) As for the bracket pieces 31 and 3.
2 can be maintained at a constant ground level and vertically, there may be no means for directly fixing the bracket pieces 31 and 32 to the ground surface S (the above-mentioned extremely small material), that is, only the bracket pieces 31 and 32. is fixed to a ready-made side wall or pillar 71Φ72 of a covered garage as a rigid structure from the ground surface S,
You can easily obtain a garage door that functions as a rotating lift door. The bracket pieces 31 and 32 include the pivot points 41 and 42 of the support arm 21φ22 and the spring 61.
It is sufficient that one of the engagement points 61a and 62a of Φ62 are arranged close to each other. The spring can be used in either compression or tension, and the bracket pieces 31 and 32
Extend the lower part of the bracket pieces 31 and 32 directly to the ground surface S.
1. Support arms 21 and 22 can also be fixed freely.
The danger of a hand getting caught in the gap between the springs 61 and 62 can be easily avoided by attaching a cover to the support arms 21 and 22 to cover the gap. It goes without saying that the set angles pointed out in this specification can be increased or decreased within the limits of mere design changes.

Effects of the Invention According to the present invention, the bottom of the engagement points 61a, 62a of the springs 61, 62 or the pivot points 41, 42 (in the case of using a tension spring) of the bracket pieces 31, 3.2 is extremely thin or has no thickness. Therefore, it is possible to install a rotary elevator door to existing facilities extremely easily and without increasing the occupied volume below the pivot point, and it is possible to achieve an efficient finish.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of an embodiment of a rotary lift door according to the present invention, and FIG. 2 is a side view of FIG. 1. l...Decorative board (II) 21, 22L1, skewer, support arm 21a, 22a...φ one end 21b number 22bφ, φ open end 31, 32゛...bracket piece 41・42・・Fist・Fist shaft fulcrum 5・・・Rotating part 61・62・・・Spring 71・72・・φ・・Column X・・・・・・・・・・Axis S・・・・・・Ground surface

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. Two support arms that are rotatable within a plane over a range of approximately 90 degrees from approximately horizontal to approximately vertical directions, and a structure that intersects with the above two support arms between the open ends of the two support arms. In a rotary lift door consisting of a decorative plate installed in the direction of A spring is engaged between the plate or the support arm, respectively, to bias the rotating part with respect to the shaft, including the support arm and the decorative plate, in the anti-gravity direction, and also to urge one of the shaft supports and the above-mentioned support arm. A part or all of the second bracket piece including one of the spring engagement points is fixed approximately vertically to the ground surface or a rigid structure from the ground surface, and the second pivot point is maintained at a constant height above the ground surface. Rotating elevator door.