JPH0118800Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention relates to a rotating lift door, and more specifically, the invention is designed to prevent the door body from protruding toward the road when the door body is flipped up to open the door. Regarding rotating elevator doors.

[Prior art] and [Problem to be solved] This type of conventional rotating elevator door is
An example of this is a flip-up lift door as shown in Publication No. 53507, but this has the problem that a part of the door body protrudes onto the road when it is flipped upwards. When a gate is installed at the very edge of a road, there is a problem in that this protrusion becomes a hindrance to traffic.

The purpose of this invention was to solve the problems of the prior art as described above by improving the arrangement of members that had hitherto been a hindrance to traffic. It is about providing.

[Means for Solving the Problems] The configuration of this invention to achieve such an object includes a door body rotatably attached to a support member installed on the ground surface via an arm, and the arm and an urging member that acts directly or indirectly on the door body to urge the door body in an anti-gravity direction, and the door body is rotated in a direction that does not come into contact with the ground surface and is opened,
In the rotary lift door that is closed adjacent to or in contact with the ground surface, when the door body is in the closed state, the door body is arranged in an upright state with respect to the ground surface, and the lower end thereof is located adjacent to or in contact with the ground surface, and the height of the lower end from the ground surface is approximately equal to or greater than the height of the center of rotation of the door body from the ground surface. It is located at the top.

[Function] In this way, when the door is closed, the lower end of the door body is positioned at a position approximately equal to or higher than the center of rotation of the door body. Therefore, when the door is rotated to open, the locus of the lower part of the door body that protrudes most outwardly follows the semicircle of the upper half, so the rotation when the door is closed is The horizontal projection of the radius vector from the center to the door body is the longest, and the door body is positioned in the most protruding state when the door is closed.

As a result, even when the door is opened and closed, the door body does not protrude outward any more than when it is closed, and even when the door is opened and closed, it does not obstruct passage.

Note that a slight protrusion that does not affect people passing on the road is allowed, so if the height of the lower end of the door body from the ground is equal to the height of the center of rotation of the door body from the ground. Or, it doesn't matter if the center of rotation is a little higher. In other words, it is sufficient that they are approximately equal.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of essential parts of an embodiment of the rotary lift door according to this invention.

As shown in FIG. 1, the configuration of an embodiment of the rotating elevator door according to this invention is described with reference to a drawing. Support members 2 and 3 are erected on S so that the axis X passes through them at a predetermined interval determined in accordance with the gap between the gates, and the support members 2 and 3 are arranged on the axis X passing through the support members 2 and 3. Second axis fulcrum 1
1, 12, and one end 21 at the two pivot points 11, 12.
two support arms 21, 22 to which a, 22a are pivotally connected and rotatable in a plane intersecting the axis X;
and the open ends 21 of the two support arms 21, 22.
b, 22b between the two support arms 21,
In a rotary lift door consisting of a decorative panel 1 as a door body (hereinafter referred to as door 1) installed in a direction intersecting with 22, a plane perpendicular to the door 1 passing near the lower end of the door 1 is The pivot points 11, 12 of
Adopt a configuration that passes through. Note that 21c and 22c are stoppers that limit the closing stroke of the door 1.
A stopper for limiting the opening stroke of the door 1 and a biasing spring for reducing the weight of the rotating parts including the door 1 and the support arms 21 and 22 are not shown for the sake of clarity.

Since the rotating lift door according to this invention has the above-mentioned structure, compared to the conventional rotating lift door shown in FIG. There are no obstacles to passing through the property. That is, since the support arms 21 and 22 according to this invention are disposed adjacent to or in contact with the ground surface S, the support arms 21 and 22 are arranged adjacent to or in contact with the ground surface S.
When passing in a direction across the support arms 21 and 22, it is possible to easily cross over the support arms 21 and 22, thereby ensuring safety and freedom of passage. Furthermore, the projection of the maximum radius of the rotating portion of the rotary elevator door according to this invention onto the horizontal plane does not exceed the length of the support arm 21 at most. Note that, as shown in the figure, the support arms 21 and 22 are spanned between the lower end of the door 1 and the pivot points 11 and 12, so that the support arms 21 and 22 correspond to the maximum radius in this case. There is.

So, to rephrase the above relationship, it is,
This means that the height of the lower end of the door 1 from the ground surface S is equal to or higher than the height from the ground surface S, which is the center of rotation of the door 1.

On the other hand, the lower end of the conventional rotary lift door has a radial projection that is always longer than the support arm 41 when it is horizontal (the second
Figure (dashed line). This shows that the conventional rotating elevator door is encroaching on the outside of the door 1 (outside of the property). The support arm 41 of the conventional rotating lift door is
Smaller than the support arm 21 according to this invention (door 1
(the turning radius of the door is small), so the conventional rotating lift door is more advantageous in terms of the volume occupied for opening and closing the door 1 inside the property. However, depending on the special circumstances of each place, this The rotary elevator door according to the invention more than makes up for the drawbacks. The door 1 according to this invention may be opened and closed by a motor drive mechanism, or by a biasing spring (a torsion spring disposed at the shaft fulcrum 11) disposed in advance to reduce the weight of the rotating part. If it is reduced, it can also be done directly manually.

[Effect of the invention] As can be understood from the above explanation, in this invention, the structure when the door is closed is such that the lower end of the door body is approximately at the center of rotation of the door body. By positioning the door at an equal or higher position, when the door is rotated and opened, the locus of the lower part of the door body that protrudes most outward will be approximately the same as the upper half of the semicircle. Therefore, when the door is closed, the horizontal projection of the radius vector from the rotation center to the door body is the longest, and the door body is positioned in the most protruding state when the door is closed.

As a result, even when the door is opened and closed, the door body does not protrude outward any more than when it is closed, and even when the door is opened and closed, it does not obstruct passage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts of an embodiment of the rotary lift door according to the invention, FIG. 2 is a side view of a conventional rotary lift door, and FIG. 3 is a side view of FIG. 1. 1... Decorative board, 11, 12... Axis fulcrum, 21,
22...support arm, 21a, 22a...one end,
21b, 22b...other end.

Claims (1)

[Scope of utility model registration request] A door body rotatably attached to a support member erected on the ground via an arm, and a biasing member that acts directly or indirectly on the arm to bias the door body in an anti-gravity direction. and the door is opened by rotating the door body in a direction that does not make contact with the ground surface,
In the rotary lift door in which the door is closed adjacent to or in contact with the ground surface, when the door is closed, the door body is arranged in an upright state with respect to the ground surface, and the lower end thereof is located adjacent to or in contact with the ground surface,
The rotary lift door is characterized in that the height of the lower end from the ground is approximately equal to or higher than the height of the center of rotation of the door body from the ground.