JPH0458553B2 - - Google Patents

Description

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

Conventional Technology Manual rotary lift doors are already known in the market, but electric ones are rarely seen, except for so-called retractable doors such as shutters. The feature of the present invention in a nutshell is that the electric motor is disposed not in a fixed part of the rotary lift door but in a movable part.

Problems to be Solved by the Invention The problems to be solved by the present invention are to propose an assembly configuration in which the rotary lift door is electrically powered and there are fewer restrictions on the width of the stored items (for example, the width of the vehicle). .

Means and Embodiments for Solving the Problems The configuration of an embodiment of the electric rotating lift door according to the present invention will be described with reference to a drawing. Second axis fulcrum 4
1, 42, and one end 21 at the two pivot points 41, 42.
two support arms 21, 22 which are pivotally supported by a, 22a and are rotatable in a plane intersecting the axis X;
and the open ends 21 of the two support arms 21, 22.
between b and 22b, the two support arms 21 and 22
A decorative panel (door) 1 installed across the direction intersecting the
In the rotary lift door including the second support arms 21 and 22 and the urging mechanism 61 and 62 that reduces the gravitational moment of the rotating part 5, including the door 1,
At least one 22 of the support arms 21, 22,
21, near the one end 22a, 21a, the axis
Electric motors 72, 71 having a drive shaft 72a parallel to
while the at least one support arm 2
A fixed power transmission wheel (sprocket A indicated by 82a in the figure) which is coaxial with the shaft fulcrums 42 and 41 that pivotally support the ends 22a and 21a of 2 and 21 and is immovable with respect to the ground surface S, and the drive shaft 72a. The structure is characterized in that a fixed drive wheel (sprocket B, indicated by 82b in the figure) is wound around a tension band such as chain 9 to transmit power.

Note that the biasing mechanisms 61 and 62 are not limited to springs, but may also be weights as a balancer. The electric motor 72 can be separately mounted on the support arm 21 on the opposite side, and can be electrically driven in a complementary manner to the system of the left and right support arms 22, 21.
Reference numerals 31 and 32 are supports for the pivot points 41 and 42 relative to the ground surface S. The second digit 2,1 used in this specification indicates the left and right sides of the support arm system, and although some parts are not shown for the sake of clarity, they are shown in the same way as other systems. be exposed. Electric motor 72
The method of supplying power to the terminal may be by conventionally known technical means such as loose stranded wire or rail and collector brush method.
For the sake of clarity, it is not particularly illustrated. Sprocket A8
2a, the sprocket B82b may naturally be a V-groove belt wheel, and in this case, it is a technical matter of equal means that belt transmission should be used instead of a chain.

Sprocket A82a is a part where chain 9 and sprocket A do not separate during any operation (limited to approximately 90 degrees), and where at least one tooth connects sprocket A82a and chain 9.
If relative movement of the sprocket A82a is prohibited, it is natural from the general function of chain transmission that the teeth of the other sprocket A82a are not necessarily required.

Function Since the present invention has the above configuration, when the electric motor 72 rotates by turning on a switch (not shown), tension is also generated in the chain. Since the sprocket A82a is immovable with respect to the ground surface S via the support 32, the electric motor 72 and the support arm 2 integrated with the electric motor 72 are connected via the center of the sprocket B82b, that is, the drive shaft 72a.
2 starts rotating around the pivot point 42 (axis X). The direction of rotation is determined by the forward and reverse rotation of the electric motor 72, and the support arms 21 and 22 are in the horizontal direction (when the door is closed).
If the rotation stroke is limited to the vertical direction (when the door is opened), the door 1 can be opened and closed by electric drive. Although limiting the rotational stroke is not the gist of the present invention, it can be done by using a limit switch or a mechanical stopper in combination with a power transmission clutch. Furthermore, by interposing a torque limiter in the power transmission path, the risk of personal injury can be avoided, and manual opening and closing can be performed at any time. Of course, the pillars 31 and 32 can also be replaced with side walls or the like.

Regardless of the configuration of the present invention, an electric motor 72 is disposed at a fixed location relative to the ground surface S, and power is transmitted from the electric motor 72 to the rotating portion 5, that is, the support arms 22, 21.
However, the structure near the pivot point 42 tends to be complicated, and in some cases, it may be necessary to limit the width of the stored items to a small value.

Effects of the Invention According to the present invention, the configuration near the shaft support points 41 and 42 is such that the sprocket A8
It is only necessary to increase the thickness of the plates 2a and 81a, and the structure can be made simple and compact. Furthermore, since the entire transmission drive system can constitute one attachment member, the configuration can easily accommodate the gradual upgrade (from manual to electric) of customers.
We can expect to expand our sales channels accordingly.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part of an embodiment of an electric rotating lift door according to the present invention, and FIG. 2 is a partially exploded enlarged view of FIG. 1. 1... Decorative board (door), 21, 22... Support arm, 21a, 22a... One end, 21b, 22b...
...Open end, 31, 32... Support, 41, 42...
Axial fulcrum, 5... Rotating part, 61, 62... Biasing mechanism, 71, 72... Electric motor, 71a, 72a...
Drive shaft, 81a, 82a... Sprocket A, 8
1b, 82b... Sprocket B, 9... Chain, X... Axis, S... Ground surface.

Claims (1)

[Claims] 1 A straight line in a horizontal plane is the axis of rotation, two fulcrums are arranged on the axis, one end is supported by the two fulcrums, and it is rotatable in a plane intersecting the above-mentioned axes. the second support arm, a decorative board installed between the open ends of the two support arms in a direction intersecting the two support arms, and the second support arm and the decorative board. In the rotary lift door comprising a biasing mechanism for reducing the gravitational moment of the rotating part, an electric motor having a drive shaft parallel to the shaft is loaded near the one end of at least one of the support arms, while the at least A fixed power transmission wheel that is coaxial with a shaft fulcrum that pivotally supports one end of one support arm and is immovable with respect to the ground surface, and a drive wheel that is fixed to the drive shaft,
An electric rotating lift door characterized by a winding power transmission.