JPH065491Y2 - Safety stop device for electric shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a safety stop device for an electric shutter installed in a building such as a house.

[Problems to be solved by the prior art and the present invention] Generally, this kind of electric device is a shutter that is formed in a series through a connecting tool by driving an electric motor that rotates forward and backward by operating a push button switch. It is designed to be opened and closed automatically by sequentially moving. However, in the past,
If you are leaving the place during work to close the electric shutter or perform remote control, even if there are obstacles on the shutter rail that interfere with the shutter or children, check them directly. However, if you continue to perform the closing work without knowing that there is an obstacle, it may be very dangerous, or the shutter may come into contact with the obstacle and damage the obstacle or the shutter itself, or drive the shutter. It was a problem because it put an extra load on the part and caused a failure.

[Means for Solving the Problem] The present invention has been made in view of the above circumstances, and was devised with the object of providing a safety stop device for an electric shutter that can eliminate these drawbacks. In an electric rain door that opens and closes an opening by moving a plurality of shutters connected in series by driving an electric motor, the opening has a sensing that is parallel to the movement path at an indoor side position of the rain door movement path. While forming an optical path and providing a light emitting and receiving device that outputs a signal for stopping driving of the electric motor by blocking the sensing optical path,
The leading shutter of the shutters is always urged by an ammunition machine to project from the leading edge of the leading shutter, and a sensing unit that senses an obstacle by immersing from the leading edge of the shutter by pressing based on contact with an obstacle.
A light-shielding plate that is linked to the sensing unit and that swings to a shielding position that protrudes toward the indoor side from the storage position located inside the indoor side surface of the leading shutter and shields the sensing optical path when an obstacle is detected by the sensing unit. It is characterized by that.

Further, according to the present invention, when there is an obstacle that interferes with the operation of the shutter, the shutter can be reliably stopped so that the shutter can be opened and closed very safely.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 and 1a are a leading shutter and a plurality of other trailing shutters, which are installed in the upper and lower frames 2 and 3, respectively. The leading shutter 1 is a top-hanging type and is attached to an upper portion of the leading shutter 1. The roller 4 is adapted to roll on a hanger rail 2a provided on the upper frame 2, and the trailing shutter door 1a is similarly constructed to be of a hanging type.
Runs on a hanger rail 2b for the trailing shutter 1a provided in parallel with the hanger rail 2a. Further, the shutters 1 and 1a are connected to each other via a connecting tool 5, and the connecting tool 5 has two rollers 5a on the left and right at one end side, and the rollers 5a are provided on a guide rail 6 provided on the shutter.
It is designed to run inside, and the other end of the connector 5 is rotatably connected to another shutter 5b. Further, the front and rear ends of the shutters 1, 1a have inclined surfaces corresponding to each other.
The a is configured so as to be accommodated in a parallel manner inside the door pocket 7.

Reference numeral 8 denotes an electric motor arranged on the upper frame 2 side in the door pocket 7, and a geared wire 9 is meshed with a sprocket 8a that rotates in conjunction with the electric motor 8. The geared wire 9 is a flexible wire having a spiral groove formed on the periphery thereof, and is driven inside the geared wire rail 2c provided in the upper frame 2 in parallel with the hanger rail 2a by the forward and reverse driving of the electric motor 8. Forced feed, but geared wire 9
The front shutter door 1 is integrally attached to the front shutter door 1 via the runner 10, and the front shutter door 1 is moved by the movement of the geared wide 9.
Are designed to move together. Reference numeral 11 is a cylindrical body for housing the geared wire 9.

12 is an opening 13a formed in the vertical frame 13 of the leading shutter 1
Is a sensing unit that is slidably fitted in the moving path direction of the leading shutter 1, and the sensing unit 12 does not protrude from the door end side surfaces of the corner pieces 14 provided at the upper and lower ends of the vertical frame 13. It is installed in the state. Also, 15 is a vertical frame 1
3 is a rack that is integrally fixed to, for example, two upper and lower locations of the sensing unit 12, and the rack 15 is the sensing unit 12
Along with this, the return ammunition 16 constantly urges the door 15 toward the door end side, and the sensing portion 12 contacts an obstacle or the like, so that the rack 15 together with the sensing portion 12 resists the return ammunition 16 and the door butt. It is designed to immerse you. Also, rack 1
The pinion 17 is meshed with the pinion 5, but the pinion 17 is integrally provided with a light shielding plate 18, and when the sensing unit 12 is retracted together with the rack 15 against the return ammunition 16, the pinion 17 is engaged. 17 rotates, whereby the shading plate 18 is housed in the housing portion 19 recessed in the panel surface on the indoor side of the leading shutter 1, and from the storage position located on the indoor side surface of the panel to the indoor side. It is configured to be displaced and rotated to a shielding position, which will be described later, so as to project and project in a substantially orthogonal shape.

On the other hand, reference numerals 20 and 21 denote light emitters and light receivers disposed at indoor positions on both left and right sides of the movement route K, and these detection light receivers 20 and 21 allow the sensing optical path A to be parallel to the movement route K. Are formed. The sensing optical path A is set so as to be blocked by the rotational displacement of the light blocking plate 18 to the light blocking position as described above. In such a case, the light projection to the light receiver 21 is interrupted. It is set so that the driving of the electric motor 8 is stopped.

In the embodiment of the present invention configured as described above, when the electric motor 8 is driven by operating the push button switch (not shown) so as to close and close the shutters 1, 1a, the geared wide 9 is generated by the drive of the motor. The leading shutter 1 that is transferred and is connected via the runner 10 moves accordingly. Then, the trailing shutter 1a also moves following the leading shutter 1 to automatically close the shutter, but during this operation, the leading shutter 1 is moved by an obstacle or a child on the shutter rail 3a. In the present invention, when the sensing portion 12 of the door tip portion comes into contact with an obstacle and immerses on the door butt side, the rack 15 in the vertical frame 13 immerses, and the rack 15 further occludes. The meshing pinion 17 will rotate. As a result, the shading plate 18 formed integrally with the pinion 17 is rotationally displaced from the storage position located inside the indoor side surface of the panel to the shading position projecting to the indoor side, and the projection provided on the indoor side. The sensing optical path A formed by the light receivers 20 and 21 is shielded, the obstacle is sensed in this way, and the driving of the electric motor 8 is immediately stopped.

Further, even if the obstacle is not yet in contact with the sensing unit 12 and is on the shutter door rail 3a, if the obstacle is in a position to shield the sensing optical path A, the operation of the shutters 1, 1a is stopped. Will be done.

The rain doors 1 and 1a that have stopped by sensing obstacles operate again when the obstacles are removed, but the leading rain door 1 contacts the door stop formed on the movement route K. In doing so, the corner pieces 14 are in contact with each other, and the sensor 12 does not contact the door stop and stop the motor.

As described above, in the present invention, the presence or absence of an obstacle or the like is sensed by the sensing unit 12 provided at the door end portion, and if there is an obstacle, the operation of the shutters 1, 1a can be reliably stopped. Therefore, it is possible to prevent the shutters 1 and 1a from coming into contact with the obstacle and damaging the obstacle, and it is possible to surely prevent the shutter itself from being damaged. Moreover, since the light shield plate 18 blocks the sensing optical path A to stop the shutters 1 and 1a, the sensing optical path A is blocked even if the obstacle is a provisional command and before the sensor 12 is contacted. Since the object at the position is sensed in advance, the obstacle can be sensed with extremely high reliability, and therefore the work of closing the electric shutter can be performed very safely.

Moreover, in the case of an emergency stop of the shutter due to an obstacle, the shading plate 18 which is normally stored in the indoor side surface of the panel of the leading shutter 1 projects toward the indoor side, and the moving route K is moved at the indoor side position of the moving route K of the shutter. Since the sensing optical path A formed in parallel with the shutter is blocked, the sensing optical path A is provided on the moving path K of the shutter, and each shutter has a through hole communicating with each other. Need not be formed at all,
The structure can be simplified. Besides, the shading plate 18
Is to be housed in the indoor side surface of the panel of the leading shutter 1 in normal times, while protruding toward the inside to shield the sensing optical path A on that side.
There is no problem that the light blocking plate 18 is caught when going in and out of the room, and smooth opening / closing movement is not impaired.

[Effects] In summary, since the present invention is configured as described above, it is possible to open and close a plurality of shutters based on the drive of the electric motor, but there is an obstacle when the shutters are closed. If there is one, the light-shielding plate protrudes indoors and blocks the sensing light path as the sensing unit provided on the leading shutter comes into contact with it and immerses, causing the electric motor to automatically stop and the shutter to move. This means an emergency stop, and it is possible to reliably prevent damage to the obstacle or the shutter itself that occurs when the shutter touches the obstacle.

Moreover, in case of this obstacle, the emergency stop of the shutter is
Normally, the light-shielding plate housed in the indoor side surface of the leading shutter is projected toward the indoor side, and it is made by blocking the sensing optical path parallel to the moving path at the indoor side position of the sliding door moving path. Like when installing it on the shutter moving route,
Since it is not necessary to form through holes that communicate with each other in each shutter, the structure can be simplified. In addition, the light-shielding plate projects toward the indoor side and shields the sensing optical path on that side, but since it is stored inside the indoor side surface of the shutter during normal times, the light-shielding plate is used when entering or exiting the door pocket of the leading shutter. There is no problem of being caught, and smooth opening and closing movement is not impaired.

[Brief description of drawings]

1 is a schematic front view of an electric shutter, FIG. 2 is a perspective view showing a driving mechanism of the shutter, and FIG. 3 is a longitudinal sectional view of the shutter, FIG. 4 is a transverse sectional view of the shutter, FIG. 5 is a longitudinal sectional view of a main part, and FIG. 6 is a transverse sectional view showing a housed state of the shutter. In the figure, 1 is a leading shutter, 1a is a trailing shutter, 8 is an electric motor, 12 is a sensing unit, 15 is a rack, 17 is a pinion, 1
Reference numeral 8 is a light-shielding plate, and reference numerals 20 and 21 are light emitters / receivers.

Claims (1)

[Scope of utility model registration request] 1. An electric rain door that opens and closes an opening by moving a plurality of shutters connected in series by the drive of an electric motor, wherein the opening is moved at an indoor side position of the rain door moving path. A sensing optical path that is parallel to the path is formed, and a light emitting / receiving device that outputs a signal for stopping the driving of the electric motor is provided by blocking the sensing optical path. It is urged and protrudes from the leading edge of the shutter door,
A sensing unit that sinks from the leading edge of the shutter to detect an obstacle by pressing based on contact with an obstacle, and a storage unit that is linked to the sensing unit and is located inside the indoor side surface of the leading shutter when the sensing unit detects an obstacle. A safety stop device for an electric shutter, comprising: a light-shielding plate that protrudes from the position toward the indoor side and swings to a shielding position that shields the sensing optical path.