JPH0530960B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to external gates for buildings, particularly garage doors.

BACKGROUND ART Gas springs, weights, and the like are generally used as biasing members for reducing the weight of the rotating portion of a rotating elevator door, but there have been many problems in the past regarding the engagement portion of the biasing force. That is, if the point of application of the biasing force is located farther from the rotating portion and the pivot point, the biasing force may be light. On the other hand, each mechanism and its arrangement (occupied volume) as seen from the shaft fulcrum expands, which is a problem. On the other hand, if the point of application of the biasing force is near the pivot point of the rotating part, there is an advantage that the entire mechanism becomes slender, but unless the biasing force is strong, the moment will be small and there will be no power for the rotating part. You can't compete with the moment.

Problems to be Solved by the Invention The present invention satisfies the demand for compactness of the entire mechanism and provides a rotating lift door using a biasing member with a low load.

Means and Embodiments for Solving Problems The configuration of an embodiment of the rotary lift door according to the present invention will be described with reference to a drawing.
Two shaft fulcrums 41 and 42 are arranged on the axis X corresponding to both ends of the width of the garage frontage, and one end 21a and 22a are pivotally supported by the two shaft fulcrums 41 and 42, and the shaft X and Two support arms 21 and 22 that are rotatable over a range of approximately 90° from approximately horizontal to approximately vertical within intersecting planes; and the two support arms 2.
Between the open ends of the support arms 1 and 22, the second support arm 2 is
1 and 22, a decorative board (door) 1 installed in a direction intersecting with 1 and 22, 2 pillars that respectively support the above 2 pivot points on the ground surface, and 2 support arms 2 mentioned above.
a stopper 51 that limits the rotation stroke of 1 and 22;
52, and a biasing member 61 disposed within the pillar so as to provide a moment in the anti-gravity direction that counteracts the power moment exhibited by the rotating parts such as the door 1 and the support arm 21. In,
At least one group of pulleys each consisting of a large wheel and a small wheel are arranged in the above-mentioned support column, each consisting of a large wheel and a small wheel, which are wound and transmitted under an endless condition (as shown in more detail in Figure 2, the roof of the garage and the ground surface are connected to each other). The four vertical solid lines connecting them indicate the strut cross section, and the upper outer side of the upper and lower two wheel axes drawn at the top of the line corresponds to the large wheel, and the lower inner side corresponds to the small wheel. The large wheels are connected to the rotation of the support arms 21 and 22 about the axis X by a winding transmission (as shown in FIG. ), On the other hand, a second large ring may be integrally fixed to the small wheel, and this second large ring is driven by a winding transmission. The biasing force from the biasing member 61 is received, and the line segment connecting the centers of the large and small wheels of the pulley and the direction of the line of action of the biasing member 61 are approximately within the support column. The structure is characterized in that it extends along the longitudinal direction of the support column. In addition, Fa and Fb indicate the input and output points of the booster mechanism F as seen from the rotating part, and of course Fa is the
Fb is engaged with the application points 61a and 62a of the biasing member. Further, the second digit 2 and 1 used in this specification indicate the left and right sides of the support arm system, and although some are not shown, they appear the same as those of other systems.

Effect Since the present invention has the above configuration, looking at the relationship between the force and displacement at the input/output points Fa and Fb of the booster mechanism F, the displacement at Fa is small, but the force is large, and the force at the Fb side is large. The opposite is true. Therefore, by engaging the points of action 61a of the biasing members 61, 62 with a large displacement and low load on the Fb side, an output with a small displacement and high load can be obtained on the Fa side. Various types of booster mechanisms are known as described below, and since it is also possible to reduce the volume, there are no particular restrictions on the installation location of the booster mechanism, and after determining the shape of the main part of the rotating lift door, For example, it can be easily accommodated in a cavity in a support that supports the shaft supports 41 and 42 on the ground surface. By doing this, the vicinity of the shaft fulcrum becomes compact, and a biasing member with a low load can be used even if the amount of displacement is large. For example, inside the pillars of a covered garage there is a space of approximately φ100 x 2000 mm, and conventionally no consideration has been given to actively utilizing this space as a storage area for parts. Considering the case of heavy use (Fig. 2),
This is suitable because the weight can be kept to a few kilograms that can be transported, and the displacement space is sufficient at 2000 mm. High-load springs with a limited installation length are naturally expected to be expensive, but this will free you from this cost pressure.

Effects of the Invention According to the present invention, the force transmission path of the booster mechanism F is arranged along the line of action of the biasing members 61 and 62 along the longitudinal direction of the column in which they are installed, so that the external appearance is not reduced. A compact rotating lift door can be obtained at low cost without being bulky.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a rotating lift door according to the present invention, and FIG. 2 is a side sectional view of an embodiment in which a weight is applied to the rotating lift door of a covered garage. 1... Decorative board (door), 21, 22... Support arm, 21a, 22a... One end, 41, 42... Axis fulcrum, 51, 52... Stopper, 61, 62...
...Biasing member, 61a, 62a...point of action, X...
Axis, F... Boosting mechanism.

Claims (1)

[Claims] 1 The axis of rotation is a straight line in the horizontal plane, two pivot points are arranged on the axis corresponding to both ends of the garage opening width, one end is pivoted to the two pivot points, and the shaft intersects with the above axis. Approximately 90° from approximately horizontal to approximately vertical in the plane
two support arms that are rotatable over a range of , a decorative plate that is installed between the open ends of the two support arms in a direction that intersects with the two support arms, and a decorative plate that straddles the two support arms; A second support supporting the fulcrum relative to the ground surface, a stopper that limits the rotation stroke of the second support arm, and an anti-gravity direction that counteracts the power moment exhibited by the rotating parts such as the decorative plate and support arm. A rotary lift door comprising a biasing member disposed within the support column so as to give a moment of A group of pulleys is arranged, and the large wheel is connected to the rotation of the support arm about the axis by winding transmission or integrally fixed, while a second large wheel is integrally fixed to the small wheel. , the second large wheel receives a biasing force from the biasing member by winding transmission, and a line connecting the centers of the large and small wheels of the pulley and the line of action of the biasing member. A rotary lift door characterized in that the directions of the above-mentioned pillars are substantially along the longitudinal direction of the pillars within the pillars.