JPH0247752Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an emergency stop device for a panel shutter installed in an opening of a building.

[Problems to be solved by the prior art and the invention] Generally, in this type of panel shutter, a plurality of panel bodies are arranged in series within a shutter case facing the upper ends of guide rails provided on both the left and right sides of the opening. A drive sprocket that meshes with a connecting chain that is connected in a shape, and a storage rail that is moved laterally by a guide roller provided on the panel body as the drive sprocket winds up the chain, and the panel body is stored in a parallel manner. A system is known in which the panel bodies are stored in parallel on the storage rail by the chain winding operation of the drive sprocket, and the panel bodies are stored in parallel by the chain winding operation of the drive sprocket. The opening is closed by letting out the guide rail toward the guide rail. However, in the conventional system, the drive sprocket continued to drive even if the lowering of the panel body was obstructed by an obstacle below the panel body while the panel body was lowering. Not only can various parts such as sprockets be damaged, but the panel shutter will not open and close smoothly, and the drive unit will be overloaded, causing the drive unit to seize and become unusable. This was becoming a problem.

Therefore, it has been proposed to configure the chain to detect the deflection of the chain, but this requires a separate deflection detection mechanism, which increases the number of parts and complicates the structure.

[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing an emergency stop device for panel shutters that can eliminate these drawbacks. The upper ends of both left and right sides of the panel body are connected in a series at a predetermined interval to a pair of left and right connecting chains while the lower end of the panel body remains free, and the guide rails provided on both left and right sides of the opening are connected. Inside the shutter case facing the entrance, there is a drive sprocket that meshes with the connecting chain, and a plurality of panel bodies that are rolled up in the vertical feed direction by the normal rotation of the drive sprocket and guided in the cross feed direction. A panel shutter is provided with a storage rail for storing a plurality of panel bodies in parallel by guiding the panel bodies in a traverse direction, and the shutter case side has a drive sprocket facing the drive sprocket across the conveyance path of the panel bodies. A sensing body is provided on the side of the drive sprocket and swings in response to the deflection of the connecting chain below the drive sprocket, and is configured to stop the driving of the drive sprocket in conjunction with the sensing operation of the sensor, and further includes: A feature is that a posture correcting body is provided on the swinging shaft of the sensing body to abut on the upper end of the panel body in order to correct the tilted posture in which the lower end of the panel body is located on the storage rail side toward the vertical posture side. That is.

With this configuration, the present invention automatically stops driving the drive sprocket when the lowering of the panel body is obstructed by the presence of an obstacle and the connecting chain bends below the drive sprocket. This allows it to be stopped.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, 1 is a panel shutter installed in an opening of a building, and a plurality of panel bodies 2 forming the panel shutter 1 are shown.
In this case, a connecting chain 4 is pivotally connected in a series at a predetermined interval to a support shaft 3a of a guide roller 3 which is protruded from the upper side of both left and right edges so that the lower end can freely swing. . The guide roller 3 and both ends of the panel body 2 are guided by guide rails 5 provided on the left and right sides of the opening, so that they move up and down. The connecting chain 4 is meshed with a drive sprocket 7 disposed within the tar case 6. Further, the shutter case 6 is equipped with a storage rail 8 which is appropriately inclined so that one end faces the upper side of the winding side of the drive sprocket 7 and the other end is lower than the one end.
Then, due to the chain hoisting operation of the drive sprocket 7, the guide roller 3 of the panel body 2 that has moved up the guide rail 5 is moved to the upper storage rail 8.
The panel body 2 is carried around to the side and transferred onto the storage rail 8, and the panel body 2 with the guide roller 3 transferred onto the storage rail 8 in this way is
Due to their own weight, they roll and move laterally toward the other end of the storage rail 8, and are sequentially stored in the shutter case 6 in parallel. On the other hand, a panel guide 9 is provided below the chain unwinding side of the drive sprocket 7, and guides the lower end of the panel body 2 unwound by the driving of the drive sprocket 7 to the guide rail 5. ing.

Reference numeral 10 denotes a posture correction body provided at the left and right upper end portions of the panel body 2 so that the tips thereof protrude from above the panel body 2; and 11 a posture corrector provided so as to face the drive sprocket 7 across the transfer path of the panel body 2. pin shaft 1
1a, the posture corrector 11 has a panel body 2 connected to a driving sprocket 7.
Until the lower end of the panel body 2 is guided toward the guide rail 5 by the panel guide, the panel body 2 is moved downward from the storage rail 8 by the drive of the
The lower end touches the protrusion 10 at the upper end of the panel body 2 that is inclined toward the storage rail 8 side, and the panel body 2
It is designed to correct the tilted posture of the body toward the vertical posture.

Reference numeral 12 denotes a sensing lever that is swingably provided on the pin shaft 11a, and like the posture corrector 11, the sensing lever 12 is placed on the side facing the drive sprocket 7 across the transport path of the panel body 2. However, as will be described later, when the panel shutter 1 is lowered, if the connecting chain 4 is bent when an obstacle hits an obstacle and the lowering of the panel body 2 is inhibited, the bent connecting chain 4 will be The sensing lever 12 is brought into contact with the sensing lever 12, and the sensing lever 12 is swung outward to retract against the torsion bomb 13. As a result, the sensing lever 12 is brought into contact with the sensing switch 14, and is closed and driven. The drive of the sprocket 7 is stopped.

In the embodiment of the present invention configured as described above, the panel body 2 descends while being guided by the guide rail 5 and closes the opening by driving the drive sprocket 7 forward and backward to wind down and wind up the chain. Alternatively, it is laterally moved on the storage rail 8 and stored in the shutter case 6, and is thus opened and closed in the opening.

In the opening/closing operation of such an opening, when the opening is closed where the panel body 2 moves from the shutter case 6 to the guide rail 5 side, there is an obstacle such as baggage that prevents the panel body 2 from descending. When this occurs, the panel body 2 is further transferred from the storage rail side while the descent of the panel body 2 remains stopped. For this reason, the connecting chain 4 is bent just below the drive sprocket 7, but in the present invention, this bent connecting chain 4 contacts the sensing lever 12 and pushes it outward, closing the sensing switch 13. It happens. As a result, the drive sprocket 7 immediately stops and the lowering of the panel body 2 comes to an emergency stop. As described above, in the case of the present invention, if some abnormality occurs and the lowering of the shutter curtain 1 is obstructed, the deflection of the connecting chain 4 is effectively used as it is to sense the abnormality and immediately start the shutter. Since the lowering of the curtain 1 can be stopped, safety is extremely high, and there is no risk of damage to members such as the panel body, drive sprocket 7, connection chain 4, etc., and there is no risk of seizure of the drive unit. There are no such inconveniences.

Moreover, in this case, the posture correction body 11 is provided on the pin shaft 11a that pivotally supports the sensing lever 12.
However, when the panel body 2 is transferred from the storage rail side to the guide rail side, if the lower end side remains on the storage rail 8 side due to inertia and tilts significantly, the upper end of the panel body 2 A certain protrusion 10 contacts the posture correction body 11 to actively correct the posture of the panel body 2 from the tilted posture to the vertical posture,
The lower end of the panel body 2 is guided so as to face the intake opening at the upper end of the guide rail 5, so that the panel body 2 can be smoothly and reliably guided up and down. Moreover, this posture corrector 11
The supporting shaft of the sensing lever 13 and the sensing lever 13 are common, so that parts can be mounted for multiple purposes, simplifying the structure and reducing the number of parts, thereby making effective use of the narrow space inside the shutter case. It is convenient and possible.

[Operations and Effects] In short, the present invention is constructed as described above, so that when the shutter curtain is lowered, if the lowering of the shutter curtain is obstructed by the presence of an obstacle, etc., the shutter curtain does not flex. The soldered connection chain contacts the sensing lever and swings, which switches the sensing switch and causes an emergency stop of the drive unit.
As a result, the shutter curtain is in a state where the connecting chain is bent enough to swing the sensing lever.
There is no other damage such as damage, and after removing the obstruction, the shutter curtain can continue to be lowered.

Moreover, in this device, a posture correction body is provided on the support shaft of the sensing body, so that when the panel body is transferred from the storage rail side to the guide rail side, the lower end side remains on the storage rail side due to inertia. When the panel body is tilted significantly, the upper end side of the panel body comes into contact with the posture correction body to actively correct the posture of the panel body from the tilted posture to the vertical posture side, and then the lower end of the panel body is moved to the upper end of the guide rail. Therefore, the panel body can be guided up and down smoothly and reliably.
In addition, this posture corrector and the sensing lever have a common support shaft, which allows them to be used for mounting components, simplifying the structure and reducing the number of parts, which allows for space in the narrow shutter case. This is convenient as it allows for effective use of.

[Brief explanation of the drawing]

The drawing shows one embodiment of the emergency stop device for a panel shutter according to the present invention.
2 is a longitudinal sectional view of the shutter case, FIG. 3 is a front view of the main parts, and FIG. 4 is an explanatory view of the operation. In the figure, 1 is a panel shutter, 2 is a panel body,
3 is a guide roller, 4 is a connecting chain, 5 is a guide rail, 6 is a shutter case, 7 is a drive sprocket, 8 is a storage rail, 9 is a panel guide, 10 is a protrusion, 11 is a posture corrector, 11a 1 is a pin shaft, 12 is a sensing lever, 13 is a torsion machine, and 14 is a sensing switch.

Claims (1)

[Scope of utility model registration request] Each panel body is connected to a pair of left and right connecting chains at the upper ends of both left and right sides in a series at a predetermined interval while the lower ends of the panel bodies remain free, and guide rails are installed on both the left and right sides of the opening. Inside the shutter case, which faces the intake port, there is a drive sprocket that meshes with the connecting chain, and a panel body that is rolled up in the longitudinal direction by the forward rotation of the drive sprocket and is guided in the lateral direction to form a plurality of panels. In a panel shutter provided with a storage rail that guides the panel bodies in the transverse feed direction and stores a plurality of panel bodies in parallel, the shutter case side includes:
A sensing body is provided on the side facing the drive sprocket across the conveyance path of the panel body and swings in response to the deflection of the connecting chain below the drive sprocket, and is linked to the sensing operation of the sensing body. The sensor is configured to stop the driving of the drive sprocket, and furthermore, the swinging shaft of the sensing body has an upper end of the panel body in order to correct the inclined posture in which the lower end of the panel body is located on the storage rail side toward the vertical posture side. An emergency stop device for a panel shutter, characterized in that it is provided with a posture corrector that comes into contact with the panel shutter.