JPH01182493A - Motor-driven turning elevating door - Google Patents

Abstract

PURPOSE:To eliminate necessity of installing a complicated mechanism in addition and also to dissolve anxiety of hindrance etc. on a transmission system due to external force during a period of motor driving by interposing, in the transmission system, a brake unit, one or two energizing members and an automatic feed mechanism. CONSTITUTION:A bi-directional brake unit D is arranged between a swinging part K consisting of a door 1, support arms 21, 22 and stays 31, 32, for instance, stay 31, and in parallel therewith, a serially connected body consisting of an energizing remember 61 capable of almost standing against the weight moment of the swinging part K and an automatic feed mechanism U driven by electric power. The stay 32 side is also constructed in the similar way. In addition, such a constitution comprising two energizing members 61 is acceptable. Furthermore, members are arranged in such a manner that even through the door 1 rises individually by manual operation during motor driving or strong external power is applied to the door 1 on the way of opening/closing operation due to a shock etc., any possible damage on the member can be prevented by observing those phenomena by means of the brake unit D or the energizing member 61.

Description

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

[Conventional technology]

Various types of electric rotating elevator doors have been proposed, but in many cases, the electric drive body is directly connected to rotating parts such as the door or support arm as a driven body, and as a result, there is a risk of inadvertent external force being applied to the rotating parts. There was a risk that the transmission system would be damaged if it worked. In order to avoid this, extra mechanisms such as a clutch mechanism and a torque limiter would be required.

[Problem that the invention seeks to solve]

The technical problem of the present invention is to eliminate concerns about external forces during electric drive by adding a new mechanism with a simple structure to the power transmission system, and to do so without adding complex mechanisms such as clutch mechanisms. This has been made unnecessary.

[Means and Embodiments for Solving the Problems] The structure of an embodiment of the electric rotary lift door according to the present invention will be described with reference to the drawings. One end of the support arms 21 and 22 is attached in the intersecting direction, and the other ends of the support arms 21 and 22 are aligned on one axis X that is parallel and horizontal to the main surface of III when the door is closed. The second shaft fulcrum 41 and 42 provided are supported respectively, and the door
When the gate is lowered and the main surface of the gate 1 is vertical, it becomes the closing limit, while
When the above Ill rises and the main surface of the door 1 is horizontal, rWIm
In a rotary elevator door where the horizontal distance of the support arms 21 and 22 and the ground height of the pivot points 41 and 42 when the door is closed are approximately equal, the rotating parts such as the jll and the support arms 21 are connected to the ground surface. A bidirectional brake mechanism is disposed between the integral body, and in parallel with the brake mechanism, a biasing member 61@6 that substantially counteracts the gravitational moment on the rotating part.
2 and an automatic feed mechanism U using electric power are arranged in parallel in a manner that restricts the downward direction of the rotary portion and does not restrict the upward direction of the master rotary portion. The structure is characterized by the following. In addition, 31 and 32 are axis branches 41 and 4.
2 on the ground, and a stopper is separately installed to limit the rotational stroke of the support arm over a range of 90' from the approximately horizontal direction to the approximately vertical direction, but it is not shown for the sake of brevity. Also, the two bows in the second digit of the reference numerals specified 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, when the electric motor M rotates and the automatic feed mechanism U (for example, there is a screw mechanism) is at the lowest limit, the biasing member 61 (62) also follows and reaches the lowest limit. Therefore, the door l is also at the lowest limit, that is, the closing limit. In this state, even if an external force is applied to Iil in the upward direction, the engagement between the biasing member 61 (62) and the rotating part is non-restrictive, so even if rsl of ill only rises alone, it may be particularly dangerous or damage the equipment. There is no fear of this, and the door will naturally return to its closed limit due to gravity.

Now, when the electric motor M rotates and the automatic feed mechanism U starts to rise, the biasing member 61 (62) also follows, so the door 1 starts to rise and finally reaches the leap door limit. Even if the movement of the door 1 is restricted in the middle of opening, or if the door 1 is forcibly lowered at the leap gate limit, it is safe because the urging of the urging member 61 (62) will only be strengthened. (It is safer to use a gas spring with a small spring constant and large variable displacement.)The door automatically returns to the open limit when external force is removed. The operation on the way from the open door limit to the closed door limit is also the same as described above.

The brake may be either simple friction braking or velocity braking using fluid or the like. The present invention is not limited to the embodiments shown in the drawings, and can be practiced even when the brake lever or the series body is disposed on the side of the rotating part, since the relative operations are the same.

As another example, the first and second biasing members 61a (62a
), 61b (62b) can also be used. The second biasing member 61b (62b) substantially counteracts the gravitational moment of the rotating part (2), and the gravitational moment of the rotating part slightly exceeds the instep at the door closing limit, and the second biasing force is applied at the one-leap door limit. Member 61b (62b
) remains in the same direction biasing force toward the rW1 door (the effect of the second biasing member 61b (62b) is no different from that of the biasing member in a normal rotating lift door). Become.).

In this state, if a bidirectional brake device is installed in parallel with the second biasing member Blb (62b) and the first biasing member 6 is installed in parallel as a third parallel body (see Fig. 4, however, The first biasing member 61a (62a) is the second biasing member 6xb (62b)
It is set to - several minutes of the installation load. ), when the electric motor M is driven from the closing limit and the automatic feed mechanism U is raised, the biasing of the first biasing member 61a (62a) is first strengthened (
For convenience, it is assumed to be in the positive direction. ), $1 remains closed.

The biasing load of the first biasing member is applied to the second biasing member 61b (
62b), the first biasing member 61a (62a
) by the urging force of the rotating part K.

Therefore, the door 1 starts to rise. When lowering the door 1 at the 0-opening limit by electric drive, the first biasing member 61
Contrary to the above, a (62a) is the second biasing member 6 l
b (62b) is biased in the negative direction against the gravitational moment on the rotating portion and the biasing force in the door opening direction that remains after subtraction. Finally, this first biasing member 61a (62a
) becomes stronger and 511 begins to descend. The first biasing member 61a (62
a) and the effect of the brake are the same as in the above embodiment. 2
Of course, this can be carried out even if the ratio between the horizontal distance of 1.22 and the ground height of the pivot points 41 and 42 increases or decreases on the enemy side.

〔Effect of the invention〕

According to the present invention, regardless of the operating position of the rotating lift door! !
Even if door l is operated appropriately by an external force on l,
l, that is, gravity on the rotating part or the first biasing member 61a (
Since it is absorbed as positional energy on 62a, there is no risk of damage to the components even in electric drive rotational lifting m similar to direct drive, and there is no need to separately install a complicated mechanism such as a clutch. It is possible to obtain an electric revolving lift door that is free of spools.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of one embodiment of the electric rotating lift door according to the present invention, FIG. 2 is a side view showing the internal structure of FIG. 1, and FIG. 3 is a side view of another embodiment. FIG. 4 is a block diagram of FIG. 3. L......Door 21, 22 Fist...Support arm 41, 42--...Axis fulcrum X...Axle 61, 62... Biasing members 61a, 62a...First biasing members 61b, 62b...Second biasing member D...Brake U...Automatic feed mechanism

Claims (2)

[Claims] (1) One end of each support arm is attached near the second side edge of the door in a direction intersecting the main surface of the door, and the other ends of the support arms are connected to each other when the door is closed. The door is supported by two shaft fulcrums arranged on one axis parallel and horizontal to the main surface, and when the door is lowered and the main surface of the door is vertical, it is at the closing limit, while the door is raised. When the main surface of the door is horizontal, the opening limit is reached, and the horizontal distance of the support arm and the ground height of the pivot point when the door is closed are approximately equal to each other,
A bidirectional brake is installed between the rotating part such as the door or support arm, and the ground surface and the integral object, and in parallel with the brake, an attachment is provided that substantially counteracts the gravitational moment of the rotating part. The invention is characterized in that a series body of a biasing member and an automatic feed mechanism using electric power is arranged in parallel in a manner that restricts the downward direction of the rotary portion and in a non-restrictive manner with respect to the upward direction of the rotary portion. Electric revolving lift door. (2) There are first and second biasing members, the first biasing member is weaker than the second biasing member, and one end thereof is biased in both positive and negative directions with respect to its natural length. The other end is connected in series with the automatic feed mechanism by an electric motor to constitute the biasing member described in item 1, while the second biasing member is engaged with the rotating part. and is configured to have a reaction force moment that substantially counteracts the gravitational moment of the brake, and is configured to be a third parallel body to each of the series bodies of the brake, the first biasing member, and the automatic feed mechanism. The electric rotating lift door according to item 1, characterized in that: