JPS62194388A - Energizing mechanism of rotary rising and falling 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] The present invention relates to external gates for buildings, particularly garage doors.

[Conventional technology]

Various methods have been proposed for loading a balancing spring to offset the gravity of a rotating elevator door, but all of them involve devising ways to protect the spring from rainwater. When a spring is viewed as two terminals, the space between the two terminals exhibits expansion and contraction displacement, so when a separate covering is provided for each of the two terminals, the relative distance between the coverings will change. It is usually not necessary that the axes of each of these separate coverings coincide strictly, or in some cases, it is required that the two axes strictly coincide, and at the same time, the two terminals are connected to the - cantilever. Sufficient rigidity may be required even when viewed.

[Problem that the invention seeks to solve]

Generally, this requirement can be solved by making each covering body a rigid member and creating a structure in which both wave covering bodies fit tightly and slide.
If the two ends of the spring are made to have an airtight structure from the viewpoint of weather resistance, the change in volume of the airtight chamber will have a damping effect on the characteristics of the spring, which is undesirable. The present invention provides a technical means for solving this problem.

[Means and Embodiments for Solving the Problems] The structure of an embodiment of the biasing mechanism for a rotating elevator door according to the present invention will be described with reference to a drawing. 31・
32, sliding rods 3Ia and 32a that are fitted around the outside of the support rods 31 and 32 and are slidable along the longitudinal direction of the support rods 31 and 32, and finally the ground surface. It consists of springs 61 and 62 that are engaged between the integrated members (31 and 32) and the sliding rods 31a and 32a and bias the sliding rods 31a and 32a upward.
- In a rotating lift door in which the urging force of 62 is counteracted by the gravitational moment exerted by the rotating parts such as the door 1 and the support arm of the door 1 with respect to the center of rotation, the sliding rods 31a and 32a are The sliding rods 31a and 32a in the vertical direction when lowered to the lowest position.
A small gap is maintained between the support rods 3I and 32, and a small hole H is arranged to communicate with the outside of the sliding rods 31a and 32a. Covers 31a' and 32a integrated with the sliding rods 31a and 32a
The structure is characterized by the fact that it is hidden in the shape of an eave. Note that instead of the small hole H, the cut groove and the raised cut belong to matters within the same technical scope. Ultimately, an integral member does not necessarily mean the same member, but also includes other members that are fixed together. Generally, the structure of the rotating part of the rotating elevator door is such that the support arm 21 is
- One end of the support arm 22 is pivotally supported, and the door 1 is fixed between the open ends of the support arms 21 and 22. A stopper is separately provided to limit the range, but it is not shown for the sake of clarity. Furthermore, the second digit of the code number 2.1 used in this specification indicates the left and right sides of the support arm system,
Although some are not shown, they appear identical to those of other systems.

[Effect]

Since the present invention has the above configuration, the support rods 31 and 3
In contrast to 2, the sliding rods 31a and 32 have closed ends.
Even if a is tightly fitted, air is constantly circulating through the small hole H, so the biasing force of the springs 61 and 62 is applied directly to the sliding rods 31a and 32a, and conversely
The operating force for opening and closing is directly transmitted to the springs 61 and 62. To prevent concerns about rainwater entering through the small hole H, covers 31a' and 31a' are integrated with the sliding rods 31a and 32a.
There is no need to worry because the 32a' is protruded like an eave to cover the small hole H.

〔Effect of the invention〕

According to the present invention, even if the biasing mechanism of the rotating elevator door is covered with two terminals each covered with a tightly fitted covering, the biasing spring can move smoothly without being braked. , it is possible to obtain the same effect as complete shielding against rainwater, etc.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part of a rotary lift door according to an embodiment of the present invention to which a biasing mechanism for a rotary lift door is applied, and FIG. 2 is a sectional view of the biasing mechanism shown in FIG. 1. 1...Door 31, 32...Support rod 31a, 32a...Sliding rod 31a', 32a'...Cover 61, 62...φ Spring H...・・・・・・Small hole

Claims (1)

[Claims] A substantially vertical support rod firmly planted on the ground surface, a sliding rod that is fitted around the outside of the support rod and is slidable along the longitudinal direction of the support rod, and finally consists of a spring that is engaged between a member that is integrated with the ground surface and the sliding rod or a member that is integrated with the sliding rod and urges the sliding rod upward; In a rotating lift door in which the biasing force is balanced against the gravitational moment exerted by a rotating part such as a door with respect to the center of rotation, the sliding rod and the supporting rod are connected in the vertical direction when the sliding rod is lowered to its lowest point. In addition to preserving a small gap between them, a small hole was provided that communicated the outside of the sliding rod with the gap, and the small hole was hidden in the form of an eave by a cover that was integrated with the sliding rod. A biasing mechanism for a rotating lift door, which is characterized by: