JPH044142Y2 - - Google Patents

Description

[Detailed Description of the Invention] An object of the invention is to provide a rotating lift door using hydraulic drive.

The revolving lift door known as the Special Publication No. 57-53507 has a light and convenient feature, but when a wide range of decorative panels (i.e., doors; the same shall apply hereinafter) is required, it is possible to Each of the rotating parts has a wide range of weight, and the springs for reducing gravity have to be classified into various layers and used in appropriate combinations. The present invention uses a hydraulic mechanism instead of the above-mentioned spring, and according to the present invention, the above-mentioned drawbacks can be easily overcome.

To describe the configuration of an embodiment of the rotary lift door according to the present invention with reference to a drawing, a straight line in a horizontal plane is defined as an axis of rotation
and two shaft fulcrums 41, 4 arranged on the axis
2, and one end 21a, 2 at the pivot point 41, 42 of the two.
2a is pivotally supported and is rotatable in a plane intersecting the axis X, and open ends 21b and 22b of the two support arms 21 and 22.
In the rotary lift door consisting of the door 1 installed across the space, the one end 2 of the two support arms 21, 22
The vicinity of 1a and 22a is connected to the same hydraulic pump 5.
The second drive section 51, 52 receives hydraulic pressure supply from the oil pipe 7 communicating with the second drive section 51, 52, and has an equal displacement of hydraulic output.
The support arms 21 and 22 of the doors 1 and 2 are biased in the upward direction of the rotating part 6 of the door 1, etc., and the support arms 21 and 2 of the doors 1 and 2 are biased in the upward direction, and the two The structure is characterized in that the support arms 21 and 22 are rotatable between a substantially horizontal direction and a substantially vertical direction. In addition, 31 and 32 are columns that support the shaft supports 41 and 42 against the ground surface S, and the second digits of the code numbers 2 and 1
indicates the left and right sides of the system, and the oil pipe 7 is installed in an inconspicuous place such as underground.

Since the present invention has the above-mentioned configuration, the drive parts 51 and 52 apply a moment in the opposite direction to the gravitational moment of the rotating part 6 when the support arms 21 and 22 are horizontal.
If given to , door 1 exhibits stable equilibrium in the closed state. Thereafter, when the discharge amount of the hydraulic pump 5 is increased based on an opening command such as a switch or lever operation, the second drive unit 51, 52 is activated according to the discharge amount.
(previously configured to be displaced by equal amounts relative to each other by hydraulic output) rises. Therefore, the door 1 smoothly transitions to the open state (the support arms 21 and 22 are in the vertical state). When closing the door 1 again, the internal pressure of the hydraulic pump 5 may be reduced. Repeat the same operation below.

According to the rotary lift door of the present invention, the raising and lowering of the door 1 is extremely smooth due to the inherent properties of the hydraulic mechanism, and the force and displacement speed can be easily and freely adjusted by adjusting the orifice. Furthermore, since the synchronization between the two driving parts 51 and 52 is naturally maintained due to the nature of the communication pipe, no unnatural destructive force is applied to the structure of the door 1. Support arms 21, 22 and drive unit 5
Regarding the specific engagement method of Nos. 1 and 52, whether direct engagement or indirect engagement via the floating link rods 81 and 82 is a matter of mere design selection. Furthermore, the characteristic effects of this invention are as follows: It is extremely easy to structurally adapt to rotating lifting doors with free frontage and free door weight, there is no need to manage the spring load by layer, and rotating lifting/lowering doors are possible. Support arms 21, 2 are an essential component of the door.
There are advantages such as there is no need to consider separately arranging a stopper to limit the rotation stroke of the second embodiment.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the rotary lift door according to the present invention, and FIG. 2 is a side sectional view of the main part of FIG. 1. 1... Decorative board (door), 21, 22... Support arm, 21a, 22a... One end, 21b, 22b...
...Open end, 41, 42... Axis fulcrum, 5... Hydraulic pump, 51, 52... Drive section, 6... Rotating section, 7
...Oil pipe.

Claims (1)

[Scope of utility model registration request] The axis of rotation is a straight line in the horizontal plane, and two fulcrums are arranged on the axis, and one end is supported by the two fulcrums, and it is rotatable in a plane intersecting the above-mentioned axes. In a rotary lift door consisting of two support arms and a decorative panel installed between the open ends of the two support arms, the vicinity of the one end of the two support arms are connected to the same hydraulic pump. The second drive section, which receives hydraulic pressure from the oil pipe and has an equal displacement of hydraulic output, biases the door rotating section, which mainly consists of the decorative panel and the second support arm, in the upward direction. A rotary lift door characterized in that the second support arm is rotatable between a substantially horizontal direction and a substantially vertical direction depending on the amount of oil discharged from the hydraulic pump.