JPS6088773A - Two-stage operative 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 An object of the present invention is to provide a two-stage rotary elevator door that takes practical safety into account and improves personnel efficiency.

A linear axis of rotation where a horizontal plane and a vertical plane close to the ground intersect, and two pivot points arranged on the axis, one end of which is pivoted on the two pivot points, and a shaft that intersects with the above axis. two support arms that are rotatable in the plane of the
Although various rotary lift doors made of decorative panels (doors) are known, they are not without drawbacks in terms of safety (durability). In other words, this is especially true when the lower part of the door is in contact with the 16-ground surface to achieve a complete seal.Usually, there is a slight gap between the door and the ground surface when the door is closed (the lower end of the door is on the ground surface). (The other part of the rotating part comes into contact with a rigid structure from the ground, completing the door closing process.) When the door closes, an even stronger downward external force is applied to the door. If this occurs (for example, if a child steps on the door), there is a risk that the rigid structure (stopper), support arm, etc. mentioned above may be damaged. According to the invention, the above-mentioned obstacles can be avoided by simple means.

The configuration of one embodiment of the two-stage rotary row descending door according to the present invention will be described with reference to a drawing. The two shaft supports 11 and 12 provided, and the two shaft supports 11 and
two support arms 21 and 22 having one end 21a and 22a pivotally supported by the support arm 12 and rotatable in a plane intersecting the axis
and the open ends 21b and 22 of the second support arms 21 and 22.
In the rotating case 1 lowering door consisting of the door 1, which is installed across the direction intersecting the above-mentioned second support arms 21 and 22 between b, the rotation including the above-mentioned door 1 and the above-mentioned second support arms 21 and 22 While the part 2 reaches the first downward stroke limit, it receives a weak old force in the anti-gravity direction (in the direction of arrow a), and after passing the first downward stroke limit, all or part of the rotating part 2 receives the second force. The structure is characterized in that it is subjected to a strong old force in the anti-gravity direction (in the direction of arrow a) until it reaches its downward stroke limit. In addition, 31 and 32 are the pillars of the pivot points 11 and 12, and 41
・42 is a stopper integrated with the column, 5 is a biasing spring applied to the support arm 21 in the anti-gravity direction (direction of arrow a) in order to reduce the weight of the rotating part 20, and 6 is fixedly installed below the door. The absorbers 7 and 7 are the support arms 21 and 22.
A strong elastic body such as rubber, a coil spring, or an elastic molded product is interposed in the support arms 21 and 22 integrally with the support arms 21 and 22.

Since the two-stage rotary row descending door according to the present invention has the above configuration, the side view when the door 1 is normally closed is the second one.
The position is as shown by the solid line in the figure (the position indicated by the solid line of rotation A'R2 also indicates the first downward stroke limit position). In this state, if a child steps on the door 1 without the elastic body 7, unexpected stress will be applied to each m, raising the risk of breakage. Also, due to the scarcity of opportunities, it is not a good idea in terms of resources to increase the intensity of hunting by several times. In the present invention, when an external force is applied to the elastic body 7 in the direction in which the gap G decreases from the first downward stroke limit, the state can be smoothly shifted to the state indicated by the dotted line (second downward stroke limit), and finally the bottom of the culm. 6.6 (The absorber itself is not essential.) Since the force comes into contact with the ground surface, the stress on each part is greatly reduced and you are free from accidents such as breakage. l, at the limit of the first downward stroke (・The weak urging force in the direction of the arrow a between the barrels refers to the old force of the spring 5, which is a force of 1, and even though it is said to be weak, it is several tens of kg according to the trial calculation. The weight is over 100 kg, and the elastic deformation of 70° is comparable (at the same level) to Spring 5.

A modification is made in which the gap G disappears from the first downward stroke limit, and a configuration in which only the door 1 slides downward with respect to the support arm 21 is adopted (it is also possible to do so as shown in FIG. 3). stopper 41 and support arm 21σ)
It's okay depending on the 4th generation. ℃・zuJz However, these other embodiments are merely mere constructive changes within the same technical scope.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the two-stage rotating lift door according to the present invention, Fig. 2 is a side view of the same, and Fig. 3 is a side view of the main part near the stopper of another embodiment. . ] -... Decorative board (door), 11/12...
・Axis fulcrum, 2...Rotating part, 41, 42...
Stopper, 5... Spring, 6.6-.
...Absorber, 7...Elastic body, 8...
...Representative of Washer Patent Applicant Asbestos Shoten Co., Ltd. Takashi Ishiwata

Claims (1)

[Claims] The axis of rotation is a straight line where a horizontal plane and a vertical plane close to the earth's surface intersect, and two fulcrums are attached to the two fulcrums, and one end is supported by the two fulcrums. A rotary arm consisting of two support arms that can rotate freely in intersecting planes, and a decorative plate that is installed between the open ends of the two support arms in a direction that intersects the two support arms. At the descending door, the rotating part including the decorative plate and the supporting arm of the upper part receives a weak anti-gravity force while reaching the first downward stroke limit, and the rotating part of the second part A two-stage rotary lift door characterized in that the entire or part of the door is subjected to a strong biasing force in an anti-gravity direction until it reaches a second downward stroke limit after passing through the first downward stroke limit.