JPH044143Y2 - - Google Patents

Description

[Detailed Description of the Invention] An object of the present invention is to provide a motor-driven rotary lift door with a compact structure.

The configuration of an embodiment of the motor-driven rotary lift door according to the present invention will be described with reference to a drawing. A straight line in a horizontal plane is defined as an axis of rotation , two support arms 2 whose one ends 21a and 22a are pivotally connected to the two pivot points 11 and 12, and which are rotatable in a plane intersecting the axis X.
1 and 22, and the two support arms 2 between the open ends 21b and 22b of the two support arms 21 and 22.
1 and 22, and a decorative board (door) 1 installed across the two supporting arms 21, 22,
22 and the door 1, in which a biasing force (-M) is applied that is approximately equal to the rotational moment M exerted by the total gravity of the rotating part 5 with respect to the pivot points 11 and 12. , a motor-driven vertical expansion and contraction urging mechanism 6 is installed inside at least one of the two pillars 31 and 32 that support the two shaft supports 11 and 12 on the ground surface S, and A compression coil spring 7 is coaxially inserted into the plunger 6a of the mechanism 6, and the upper ends of the plunger 6a and the spring 7 are connected to the plunger 6a through a piston 8 slidably fitted in the one support column 31. The structure is characterized in that the support arm 21 on the side of at least one pillar 31 is linked with the support arm 21 in the vicinity of the pivot point 11, and the lower ends of the biasing mechanism 6 and the spring 7 are brought into direct contact with the ground surface S, respectively. It's summery. Note that the support arms 21, 2
The stopper that limits the rotation stroke of No. 2 is not shown for the sake of clarity. Further, since the motor drive biasing mechanism 6 has already become a commercial product as a unit, it will not be necessary to discuss it in detail. Since the opening height of the door 1 is (length of the support arm 21) + (height of the support column 31, more precisely, the pivot point 11 from the ground surface S), the height of the axis X from the ground surface S is: The height of the general side entrance, which allows cars and people to pass through freely, may be freely determined by appropriate and design choices (in the illustrated example, the height of the axis (The height may be assumed to be approximately 1/2 of a person's height, or approximately 1 meter.)

Since the present invention has the above configuration, the support 3 as a support member for the ground surface S of the shaft fulcrum 11
1. A spring 7 for offsetting the weight of the rotating part 5, a biasing mechanism 6 as a motor-driven expansion and contraction mechanism,
Since they are not interposed independently between the ground surface S and the support arm 21, but are arranged with their axes aligned with each other, it is possible to significantly reduce the space occupied by the members by (1/3). can. This is clear from the comparison between Figures 2 and 3.
This is convenient when entering and leaving the car. Note that the piston is not limited to a cylinder, but may also be polygonal or gear-shaped. Further, it goes without saying that the lower ends of the biasing mechanism 6 and the spring 7 may be engaged with the support 31 or the like and indirectly contact the ground surface.

In this specification, the words "coaxial" or "aligned axes" mean that the piston 8, the compression coil spring 7, and the motor-driven biasing mechanism 6 are This must be understood not only in the case where the three axes are completely aligned, but also in the case where the maximum external shape of any one does not protrude from the other two. This is also a matter of course.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of essential parts of a motor-driven rotary lift door according to an embodiment of the present invention, Fig. 2 is a side view of an embodiment of a motor-driven rotary lift door not according to the present invention, and Fig. 3 is a view similar to Fig. 1. FIG. 1... Decorative board (door), 11, 12... Axis fulcrum,
21, 22... Support arm, 31, 32... Support column, 5... Rotating part, 6... Biasing mechanism driven by motor, 7... Compression coil spring, 8... Piston.

Claims (1)

[Scope of utility model registration request] The axis of rotation is a straight line in a horizontal plane, and two pivot points are arranged on the axis, and one end is pivotally attached to the two pivot points, and it is rotatable in a plane that intersects with the above-mentioned axes. The circuit includes two support arms, and a decorative board installed between the open ends of the two support arms in a direction intersecting the two support arms, and includes the two support arms and the decorative board. In a rotating lift door in which a biasing force is applied that is approximately equal to the rotational moment exerted by the total gravity of the moving parts relative to the pivot point, at least one of the two supports supporting the two pivot points relative to the ground surface is applied. A vertical expansion/contraction biasing mechanism driven by a motor is installed inside one pillar, and
A compression coil spring is coaxially inserted into the plunger of the biasing mechanism, and the upper ends of the plunger and the spring are connected to the at least one pillar via a piston that is slidably fitted in the one pillar. The motor-driven rotation is linked to the side support arm in the vicinity of the pivot point, and the lower ends of the biasing mechanism and the spring are brought into direct or indirect contact with the ground surface. Elevating door.