JPH0654065B2 - Door gearbox - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to an automatic door that opens and closes by a folding door, a gate, and other swings, and is a door that can be manually opened and closed even if the reduction ratio is increased. The present invention relates to a transmission.

"Prior Art" When a door is driven by a motor, since the rotation speed of the motor is high, the transmission is interposed between the rotation shaft of the motor and the rotation shaft of the door to appropriately reduce the speed of the drive. However, if a gear with a large reduction ratio is used, the transmission cannot act as a brake and the door cannot be opened and closed manually in the event of a motor failure or power failure. Therefore, conventionally, a friction clutch or the like is interposed in the middle of the transmission so that the door can be manually opened / closed in the event of a power failure or the like.

[Problems to be Solved by the Invention] In the conventional method of interposing a friction clutch in the middle of the transmission, there is a problem that a special transmission is required, which is extremely expensive.

"Means for Solving Problems" The present invention has been made to solve the above-mentioned problems, and includes a transmission connected to a motor (5) and a final rotation shaft (13) of the transmission. ) First link (14) integrally connected to
And a swinging shaft (21) of the swing door (3), which is integrally connected to a driven rotating shaft (16) that rotates and has a turning radius larger than that of the first link (14). A second link (17) having, wherein the transmission is the motor (5)
A worm gear (9) connected to the gear via a transmission mechanism, a reduction gear (10) meshing with the worm gear (9), and a smaller diameter than the reduction gear (10) coaxial with the reduction gear (10). It consists of a reduction gear (11) and a reduction gear (12) that meshes with this reduction gear (11), is sufficiently larger than this reduction gear (11), and is coaxial with the final rotation shaft (13). , The worm gear
(9) and the reduction gear (10) have a reduction ratio that allows the worm gear (9) to rotate from the reduction gear (10) as well.
Guide roller provided on one of the second links (14) (18)
A door transmission, characterized in that (15) is adapted to rotate while being engaged with a guide groove (18) provided on the other side.

"Operation" The rotation speed of the motor (5) is first reduced by the transmission. Then, the first link provided on the final rotary shaft (13) of the transmission
(14) rotates while engaging with the second link (17) on the driven shaft side. The radius of gyration is small on the first link (14),
Since the link (17) is large, the door (3) is opened and closed by decelerating between the first and second links (14) and (17). If the door (3) is manually opened or closed when the motor (5) stops rotating due to a failure or power failure, the second and first links
(17) Attempt to rotate the transmission via (14). Second, first
The guide roller (15) and the guide groove (18) between the links (17) and (14)
The worm gear (9) and the reduction gear (10) have a reduction ratio that allows the worm gear (9) to rotate from the reduction gear (10), so the transmission is rotated in the opposite direction. it can.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 3, (1) is a blind, (2) is a pillar, and (3) and (4) are center folding doors.

A motor (5) for rotary drive is placed in the seamless (1), and the motor (5) is connected to the worm gear (9) via the pulley (6), the belt (7) and the pulley (8). It is connected and is further transmitted to the drive-side rotating shaft (13) via the reduction gears (10), (11) and (12) as shown in FIGS.

The reduction gears (10) (11) (12), especially the worm gear
A gear having a reduction ratio and a gear shape is used as (9) so that even if it is rotated from the rotation shaft (13) side, it is transmitted to the motor (5) side and rotated.

A link (14) is fixed to the rotary shaft (13), and a guide roller (15) is provided at one end of the link (14).
A driven side rotating shaft (16) is provided at a distance from the driving side rotating shaft (13), and a link (1
7) are connected, and the guide roller (1
The guide groove (18) is formed toward the axial center of the rotating shaft (16) for engaging with (5).

A pulley (19) is connected to the driven rotary shaft (16) as shown in FIG. 3, and the pulley (19) is connected to the rotary shaft (21) of the door (3) through a belt (20). Is connected to the pulley (22). When two folding doors are provided on the left and right, a pulley (23) is further provided on the door rotation shaft (21), and a belt (24) is wound around the pulley (23) to cross the other door. It is wound around a pulley of a rotating shaft (not shown).

In addition, in order to limit the rotation angle of the link (17) to 90 degrees, the abutment (25) is cut out into a fan shape of 90 degrees and both inner edges are stoppered.
(26) and (26).

Next, the operation of the above configuration will be described.

When the motor (5) rotates, the pulley (6), the belt (7), the pulley (8), the gears (9), (10), (11) and (12) reduce the speed in sequence, and the rotation shaft (13) on the drive side becomes The link (14) rotates leftward in FIG. The guide roller is rotated by the rotation of one of the links (14).
Since (15) moves while sliding in the guide groove (18) of the other link (17), the other link (17) also rotates to the left in FIG. When the angle formed by the one link (14) and the other link (17) is substantially right angle, even if the one link (14) rotates at a constant angular velocity, the other link (17) rotates slowly. Then, at the position where the one link (14) and the other link (17) substantially coincide with each other, the other link (17) rotates at the highest speed.

Furthermore, when it rotates again until it reaches a position at a substantially right angle, it slowly rotates, and when the drive side rotation shaft (13) rotates 260 degrees, the driven side rotation shaft (16) rotates 90 degrees and the other The link (17) contacts the stopper (26) and stops.

At this time, when one link (14) rotates 260 degrees, the other link (17) rotates 90 degrees, which means that the speed is reduced by 90/260.

Next, if the door (3) (4) cannot be opened / closed automatically due to a power failure, motor failure, etc., if the doors (3) (4) are manually rotated, the door rotation shaft (21), Pulley (22), belt (20),
The rotating shaft (16) on the driven side and the link (17) integrated with the rotating shaft (16) rotate via the pulley (19). Then, the link (14) engaged with the link (17) and the drive side rotation shaft (13) rotate,
Furthermore, through the gears (12) (11) (10), the worm gear (9),
The pulley (8), belt (7), pulley (6) and motor (5) rotate.

At this time, since the worm gear (9) and the reduction gear (10) have a reduction ratio that allows the worm gear (9) to rotate from the reduction gear (10), the transmission can rotate in the opposite direction.

In the embodiment, the guide roller (15) is provided in the link (14) and the guide groove (18) is provided in the link (17). Conversely, the guide groove (18) is provided in the link (14). A guide roller (15) may be provided on (17).

In the example of FIG. 3, the left and right folding doors are driven by a pulley and a belt. However, as shown in FIG. 4, two arms ( 27) and (28) are provided, and the left and right door rotation shafts (21) and (29) are also provided with arms (30) and (31), respectively, and the space between them can be freely rotated by connecting rods (32) and (33). The center folding door may be opened and closed by swinging.

[Advantages of the Invention] As described above, according to the present invention, the worm gear (9) and the reduction gear (10) have a reduction ratio that allows the worm gear (9) to rotate from the reduction gear (10). As described above, even if the transmission is not provided with a complicated mechanism such as a friction clutch, the door can be manually rotated at the time of power failure or failure. Also,
With respect to the rotation speed of the door that is opened and closed by the swing, it is possible to open and close slowly at the beginning and end and open and close at an intermediate speed while rotating the drive-side rotating shaft at a constant speed.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of a door transmission according to the present invention, FIG. 2 is a vertical cross-sectional view of FIG. 1, and FIG. 3 is an essential part when applied to a folding door. A front view and FIG. 4 are plan views of another embodiment applied to a folding door. (1) …… No eye, (3) (4) …… Center folding door, (5) …… Motor,
(13) …… Rotary shaft on drive side, (14) …… Link, (15) …… Guide roller, (16) …… Rotary shaft on driven side, (17) …… Link, (18) …… Guide groove.

Claims (1)

[Claims] 1. A transmission connected to a motor (5) and a first link integrally connected to a final rotary shaft (13) of the transmission.
(14) and a rotary shaft (16) on the driven side that is rotated by being transmitted to the swivel shaft (21) of the swing door (3).
A second link (17) having a larger radius of rotation than the radius of rotation of the link (14) of
A worm gear (9) connected to (5) via a transmission mechanism,
A reduction gear (10) meshing with the worm gear (9), a reduction gear (11) coaxial with the reduction gear (10) and having a smaller diameter than the reduction gear (10), and the reduction gear (11) Meshing with the final rotation shaft (13), which is sufficiently larger than the reduction gear (11).
And a reduction gear (12) coaxial with the worm gear.
(9) and the reduction gear (10) have a reduction ratio that allows the worm gear (9) to rotate from the reduction gear (10) as well.
Guide roller provided on one of the second links (14) (18)
A door transmission, characterized in that (15) is adapted to rotate while engaging with a guide groove (18) provided on the other side.