JPH0740640Y2 - Opening and closing transmission mechanism of building opening and closing body - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is applicable to shutters, blinds,
The present invention relates to an opening / closing transmission mechanism suitable for transmitting the rotation of a motor to an opening / closing body in a device for automatically opening / closing an opening / closing body (including a shield) for a building such as a louver.

[0002]

As is well known, shutters, blinds,
A device such as a louver that automatically opens and closes an opening / closing body (shielding body) for a building can use the power of a motor to wind and lower the opening / closing body, and fully open, fully closed, and intermediate positions. The opening / closing body can be stopped at the required position.

As a means for holding the stop position of the opening / closing body, as shown in FIGS. 6 and 7, it is widely practiced to incorporate a brake shoe, an electromagnetic clutch and the like into an automatic opening / closing device.

In the case of the means shown in FIG. 6, the brake plate b is fixed to the motor shaft a and the mounting hole d of the motor case c is provided.
Since the ring-shaped brake shoe f that is fitted inside and receives the elastic force of the spring e is in pressure contact with the brake plate b, the braking force always acts on the motor shaft a. That is, when the motor is on, the means shown in FIG.
Is rotated against the braking force, and when the motor is off, the motor shaft a is stopped by the braking force.

Therefore, in the case of the means shown in FIG. 6, an opening / closing member (shutter,
The operation shaft (not shown) of the blind is stopped at the same time when the normal rotation or the reverse rotation of the motor shaft a stops, and thus the opening / closing body is held at a predetermined winding position or winding position.

In the case of the means shown in FIG. 7, the electromagnetic coil h fixed to the motor case g, the flange i attached to the end portion of the motor shaft a, and the flange i held and rotated integrally with the electromagnetic coil h, Further, it is provided with an attracted plate k capable of contacting the flange i and a spring j for separating the attracted plate k from the electromagnetic coil h side.

The attracted plate k in the means of FIG. 7 is released from the electromagnetic coil h by the elastic force of the spring j when the electromagnetic coil h is not energized, but when the electromagnetic coil h is energized, Electromagnetic coil h against spring j
Adsorbed to the side. That is, in the means shown in FIG. 7, when the motor is on and the electromagnetic coil is off, the motor shaft a rotates without receiving a braking force, and when the motor is off and the electromagnetic coil is on, the attracted plate k is attracted by the electromagnetic coil h. The motor shaft a is braked.

Therefore, in the case of the means shown in FIG. 7, the operating shaft of the opening / closing body interlocked with the motor shaft a is stopped at the same time when the forward or reverse rotation of the motor shaft a is stopped, and thus the opening / closing body is opened. Is held in a predetermined winding position or winding position.

[0009]

In the case of the means shown in FIG. 6, since the brake plate b and the brake shoe f are constantly in frictional contact with each other via the spring e, the load on the motor is increased and the rotational torque is reduced. Therefore, it is necessary to inspect and replace the brake plate b and the brake shoe f, which are more worn than other parts. In addition to this, when the motor is not operated due to a power failure or a failure, unless the mechanical braking by the brake plate b and the brake shoe f is released,
It becomes difficult to manually wind up and down the opening / closing body, so that it becomes impossible to deal with an unexpected and emergency situation such as a fire.

In the case of the means shown in FIG. 7, even if the difficulty of expensive equipment is excluded, the movement of the opening / closing body is restrained when the power is intentionally turned off, that is, when the electromagnetic coil h is off. Things are gone, and the opening and closing body can be freely opened and closed. When this is examined from the viewpoint of crime prevention, for example, if the opening / closing body is a shutter for an entrance / exit of a building, opening of the shutter upon disconnection of the power source allows entry of outsiders.

[Object of the Invention] In view of the above technical problems, the present invention aims to prevent wear of parts, add a self-locking function of an opening / closing body in a power-off state, and perform a simple manual opening / closing operation. It is intended to provide an opening / closing transmission mechanism for an opening / closing body for a building that can be used.

[0012]

SUMMARY OF THE INVENTION In order to achieve an intended purpose, an opening / closing transmission mechanism for a building opening / closing body according to the present invention is provided with a motor having a motor shaft and an orthogonal manual operation orthogonal to the motor shaft. An operation shaft for operation, an output transmission shaft parallel to the motor shaft and orthogonal to the operation shaft, and a winding shaft for hoisting or lowering the opening / closing body for a building, the motor shaft In terms of the relative relationship between the operating shaft and the operating shaft, screw gears are attached to the outer periphery of the motor shaft and the operating shaft at the intersections of these shafts so that the screw gears mesh with each other, and the operating shaft and the output transmission shaft In terms of the relative relationship with the above, at the intersection of these two shafts, a worm gear is attached to the outer periphery of the operating shaft, and a worm wheel is attached to the outer periphery of the output electric shaft. There it are engaged with each other, the relationship between the output transmission shaft and the winding shaft, characterized in that the winding shaft to an end of the output transmission shaft is connected.

[0013]

In the opening / closing transmission mechanism of the present invention, when the motor is turned on, the rotation of the motor is transmitted to the winding shaft like the motor shaft → a pair of screw gears → operating shaft → worm gear → worm wheel → output transmission → winding shaft. be able to. Therefore, the opening / closing body can be wound up or down by rotating the motor in the forward or reverse direction. When the power supply of the motor is cut off, the open / close body can be wound up or down by rotating the operating shaft in the forward or reverse direction in the same manner as above. The rotation operation to be transmitted from the winding shaft side to the motor shaft side is impossible because it is blocked by the worm gear and the worm wheel.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The opening / closing transmission mechanism for an opening / closing body according to the present invention will be described below with reference to the illustrated embodiment.

1 to 5, the two casings 1 and 2 are arranged adjacent to each other along their length,
And they are fixed to each other.

[0016] Figure 2, as is clear with reference to FIG. 3, one of the casing 1, a motor 4 with motor shaft 3, out
Part of the force transmission shaft 6 (intermediate portion in the length direction), a plurality of bearings 7
a, 8a, 1 1a, 12a, other incorporates an other
The other casing 2 is the other part of the operation shaft 5 and the output transmission shaft 6.
(Intermediate portion in the length direction), a plurality of bearings 9, 10, 11b,
12b and others are built in.

In the casing 1, the motor shaft 3 located at the shaft center of the motor 4 is rotatably supported at both ends via a pair of bearings 7a and 8a, and one end (left end) of the motor shaft 3 is supported.
Has entered the other casing 2.

Output transmission shaft in both casings 1 and 2
6 is arranged so as to be parallel to the motor shaft 3, and each bearing 1
It is rotatably supported by 1a, 11b, 12a and 12b.
And one end (right end) of the
And the other end (left end) is the other casing 2
It sticks out.

The operating shaft 5 definitive in the casing 2 together are arranged perpendicular to one end of the motor shaft 3 (left), rotatably supported at both ends via the bearings 9 and 10 paired paired Has been done.

In the relative relationship between the motor shaft 3 and the operating shaft 5 ,
These intersections plant odor of both axes Te Motor shaft 3, the screw gear 13b to each outer periphery of the operating shaft 5, 14b is attached, these screw gear 13b, 14b are meshed with each other.

The screw gears 13b and 14b are
It constitutes a part of the speed reduction mechanism. One end of the operating shaft 5 (front), as apparent with reference to FIGS. 1 to 3 are formed as insertion pieces 5 ₁ polygons, the insertion piece 5
₁ is inserted into the screw hole 2 ₁ formed in the front wall of the casing 2.

1 to 5, means for operating the operating shaft 5 are a flexible manual transmission shaft 17, a wrench 18 formed at the tip of the manual transmission shaft 17, and a manual transmission shaft 17.
Cap-type set screw loosely fitted around the tip of the
2 ₂ , a flexible pipe 19 covering the outer circumference of the manual transmission shaft 17, and a handle 20 connected to the base end of the manual transmission shaft 17 via a gear transmission system. In this case, the wrench 18 of the manual transmission shaft 17 corresponds freely insertion piece 5 ₁ and Hamada' of the operation shaft 5, screws 2 ₂ of the cap-type freely engaged with the threaded hole 2 ₁ a casing 2 It corresponds. Means for such an operation shaft 5, the wrench 18 of the manual transmission shaft 17 is attached fitted in the insertion piece 5 ₁ of the operating shaft 5 as shown in FIG. 3, the set screw 2 ₂ of the casing 2 to hold this thread is crowded twisted into the hole 2 in _1, further handle 20 as shown in FIG. 4 is anchored to the sides of the building opening.

1 to 5, 21a and 21b are winding shafts, and 22a and 22b are couplings, respectively. These winding shafts 21a and 21b are coupled to the couplings 22a and 22.
It is connected to both ends of each output transmission shaft 6 via b.

In FIGS. 4 and 5, reference numeral 23 is an opening / closing body (shielding body), 24 is a storage case for storing the opening / closing body 23 and essential parts of the apparatus, 25 is a rotating body for winding the opening / closing body 23, and 26. Is a power source and 27 is a control unit. The opening / closing body (shielding body) 23 includes a shutter as an example and a louver or a blind as another example.

In the above-described embodiment, when the opening / closing body 23 is wound up or down, the power source 26 is turned on to supply power to the motor 4 to rotate the motor shaft 3 forward or backward. When the motor 4 is normally or reversely rotated in this manner, the rotation of the motor 4 changes from the motor shaft 3 to the screw gear 1.
3 → screw gear 14 → the operating shaft 5 → worm gear 15 → the worm wheel 16 → output transmission shaft 6 → the winding shaft 21a, 21b
As described above, the opening / closing body 23 is wound up or wound down by the rotating body 25.

In the above, when the motor 4 does not operate due to a power failure, an electric system failure, etc., the handle 20
Forward or reverse, and this rotation is manually transmitted by the transmission shaft 1
7 is transmitted to the operation axis 5 . That is, the rotation of the operating shaft 5, the operation shaft 5 → worm gear 15 → the worm wheel 1
6 → output transmission shaft 6 → reel shaft 21b, and at the same time, operation shaft 5 → motor shaft 3 → worm gear 15 → worm wheel 16 → output transmission shaft 6 → reel shaft 21a → reel shaft 21
Since it is transmitted as a, the opening / closing body 23 is rolled up or rolled down as described above.

Further, when the power supply 26 is off,
When an intruder outdoors attempts to forcibly wind up the opening / closing body 23, that is, when a force to rotate the winding shafts 21a and 21b acts from the outside, the worm gear 15 and the worm wheel 16 move from this direction. Since the rotation transmission is blocked, such a situation is prevented in advance. The worm gear 15 and the worm wheel 16 are connected to the power source 26.
When the switch is turned off, the opening / closing member 23 located at the intermediate position between the fully open position and the fully closed position is prevented from falling by its own weight. The matters described above are of course the same when a power failure, an electric system failure, or the like occurs.

In the present invention, the motor 4 and other electric
Parts are mainly off-the-shelf products and are mechanical parts
Is made of metal or synthetic resin in the right place,
In particular, parts such as gear transmission systems cause transmission malfunction.
Finish with a proper gear ratio.
Be done.

The operating shaft 5 in the present invention is a plug piece of the operating shaft 5.
5 or ₁ can be operated held in off-the-shelf tool
Et al., Screw _{2 2,} manual transmission shaft 17, pipe 19, hand
Means for operating the operating shaft 5, such as
Not a thing.

[0030]

[Effect of device] Opening and closing transmission for a building opening and closing body according to the present invention
The structure has the following effects. [Effect 1] Since the structure mainly consists of the gear transmission system,
Load, reduce rotational torque,
They do not prematurely wear parts. According to
Not only eases maintenance and inspection of equipment, but also
Or, the opening / closing body can be operated stably and lightly. [Effect 2] When the motor does not operate due to power failure, failure, or other reasons,
The opening / closing body can be manually operated via the operation shaft. Shi
Therefore, it is technically necessary to prepare for unexpected and emergency situations.
Establish and avoid secondary disasters caused by the inability to open / close
You can [Effect 3] When the motor is off, the self-lock function works. You
That is, an intruder outside tries to forcibly wind up the opening / closing body.
However, for that reason, the force to rotate the winding shaft acted from the outside.
In this case, the rotation transmission from this direction should be
Muwheel stops. Therefore, prepare for crime prevention
Is technically established and does not allow outside intrusion. [Effect 4] While the motor is stopped, the worm gear and worm wheel
Since the self-locking function of
When it is in the middle position between fully open and fully closed, it falls under its own weight.
Never. Therefore, in the case of a fall accident of the opening and closing body
The preparedness is technically established and the device can be used safely.
Wear.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of an opening / closing transmission mechanism according to the present invention.

FIG. 2 is a vertical sectional side view showing an embodiment of an opening / closing transmission mechanism according to the present invention.

FIG. 3 is a cross-sectional plan view of essential parts taken along the line XX of FIG.

FIG. 4 is a front view schematically showing an example of use of the opening / closing transmission mechanism according to the present invention.

FIG. 5 is a side view schematically showing an example of use of the opening / closing transmission mechanism according to the present invention.

FIG. 6 is a sectional view showing a main part of an example of a conventional transmission mechanism.

FIG. 7 is a sectional view showing a main part of another example of a conventional transmission mechanism.

[Explanation of symbols]

1 ・ ・ ・ Casing 2 ‥‥ Casing 3 ‥‥‥ Motor shaft 4 ‥‥ Motor 5 ‥‥ Operating shaft 6 ‥‥ ‥ Output transmission shaft 13 ‥‥‥ Screw gear 14 ‥‥‥ Screw gear 15 ‥‥‥‥ Worm gear 16 ... Worm wheel 21a ... Winding shaft 21b ... Winding shaft 23 ... Opening and closing body

Claims (1)

[Scope of utility model registration request] 1. A motor having a motor shaft, an operating shaft for manual operation orthogonal to the motor shaft, an output transmission shaft parallel to the motor shaft and orthogonal to the operating shaft,
It must be equipped with a winding shaft for hoisting or lowering the opening / closing body for buildings, and in the relative relationship between the motor shaft and the operating shaft, at the intersection of these two shafts The screw gears are attached so that the screw gears mesh with each other, and in the relative relationship between the operation shaft and the output transmission shaft, the worm gear is attached to the outer periphery of the operation shaft at the intersection of these shafts, and A worm wheel is attached to the outer periphery of the output transmission shaft, and these worm gears and worm wheels mesh with each other.In the relative relationship between the output transmission shaft and the winding shaft, the winding shaft is connected to the end of the output transmission shaft. An open / close transmission mechanism for a building opening / closing body.