JPH0137555B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a rotating elevator door that takes into consideration the durability of its members.

Since the rotating part of the rotating lift door is relatively heavy, it is usually an opening/closing mechanism driven by a biasing spring or motor in the anti-gravity direction (hereinafter collectively referred to as the biasing mechanism).
However, there have been some difficulties in terms of weather resistance (rust prevention of internal mechanical parts, mainly the biasing mechanism). According to the present invention, this problem can be solved with a simple configuration.

To describe the configuration of one embodiment of the rotating lift door according to the present invention with reference to a drawing, a straight line where a constant ground level and a vertical plane intersect is defined as an axis of rotation fulcrums 41, 42, and the second axis fulcrum 41,
42 from the ground surface S, and one end 21a, 22a is pivotally supported by the two shaft support points 41, 42, respectively, and the shaft X
two support arms 21, 22 that are rotatable in a plane that intersects with the open end 21 of the two support arms;
A decorative panel, that is, a door 1 installed between b and 22b in a direction intersecting the two support arms 21 and 22.
and the second pillar 3 that counteracts the gravity of the rotating part including the door 1 and the second support arms 21 and 22.
1, 32, in which an S-shaped floating link rod 6, 6 is connected between the biasing mechanisms 5, 5 and the support arms 21, 22. and the floating linking rods 6, 6
A hole 7 is formed in the center of the elastic lids 7, 7 which are fastened to the upper open ends of the pillars 31, 32.
The structure is characterized by penetrating through the holes 7a and 7a in a watertight and slidable manner. In addition, 8,8
is a piston that slides inside the upper cylindrical bodies of the struts 31 and 32, and is connected to the biasing mechanism 5 and is considered to be a part of the biasing mechanism 5. Further, a stopper that limits the opening/closing stroke of the door 1 is not shown for the sake of clarity.

Since the configuration of the present invention is as described above, the upper engagement points 6a, 6a of the floating linkage rods 6, 6 with respect to the support arms 21, 22 are shaped like an arc with the pivot point 41 as the center throughout the entire opening/closing process of the door 1. Despite drawing a trajectory of ). This does not matter even if the elastic modulus and hardness of the elastic lids 7, 7 are close to rigid bodies due to long-term use of opening and closing.
Regarding the watertight structure of 7 and the floating connecting rods 6 and 6, it is not intended that even a small amount of water leakage will not be allowed. ) is effective in avoiding fatigue deformation of the holes 7a, 7a, and at the same time, clogging in the pillars 31, 32 ensures safety of the biasing mechanisms 5, 5 from rain water, etc. (pressure difference due to movement of the piston 8). If this is harmful, this can be easily solved by structuring the piston 8 in a mesh.) Furthermore, it is natural that the biasing mechanisms 5, 5 and the floating link 6 can be constructed on only one support column if the necessary strength is obtained. In addition, to describe the auxiliary structure in FIG. 2, 41a is a connecting tool between the support column 31 and the pivot point 41, which can be considered as a part of the pivot point 41, and 8a is an insert fixed integrally with the piston 8. Additionally, the connecting member has its own engagement hole.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts of an embodiment of a rotary lift door according to the present invention, and FIG. 2 is an enlarged side view of a floating link. 1... Decorative board (door), 21, 22... Support arm, 21a, 22a... One end, 21b, 22b...
...Open end, 31, 32... Support, 41, 42...
Axial fulcrum, 5... biasing mechanism, 6... floating link, 6a
... Upper engagement point, 7 ... Elastic lid, 7a ... Hole.

Claims (1)

[Claims] 1 The axis of rotation is a straight line that intersects the constant ground height and the vertical plane, and two fulcrums are placed on the axis, and two cylindrical supports that support the two fulcrums from the ground, respectively. and two support arms each having one end pivotally supported by the two pivot points and rotatable in a plane intersecting the axes, and the second support arm between the open ends of the two support arms. and a biasing mechanism housed in the first or second pillar that counteracts the gravity of the rotating part including the decorative board and the second support arm. In the rotary elevator door, the biasing mechanism and the support arm are engaged with each other by an S-shaped floating link, and the floating link is connected to an elastic lid body tightened to the upper open end of the support. A rotary lift door characterized by having a hole drilled in the center of the door penetrating the door in a watertight and slidable manner.