JPH0750549Y2 - Foreign object detection device for shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a foreign matter detection device for an electric shutter installed at a doorway or a window of a building.

[Conventional technology]

The present invention is an improvement of the foreign matter detection device for a shutter, which the applicant previously applied (Japanese Patent Application No. 1-36189), in which the foreign matter detection device for the previous shutter has movable slats vertically adjacent to each other (a) ( (B) An actuator (c) composed of a link is provided at the end of (b), and when the slat comes into contact with a foreign object while descending, the actuator (c) is bent by the descending upper slat (a), The linear pressure-sensitive sensor (e) arranged in the guide frame (d) is pressed to stop the shutter. (Refer to FIG. 12 and FIG. 13) [Problems to be solved by the invention] The foreign matter detection device of the shutter does not immediately stop the motor even if it contacts the foreign matter and sends a stop signal to the motor. The slats continue to descend, and the weight of the upper slats is added to the slats, causing the actuator to bend more than necessary, which causes an excessive pressing force to be applied to the linear pressure-sensitive sensor. One of the causes of damage to the pressure sensor was shortening the life of the linear pressure sensor.

Also, in order to improve the foreign matter detection function of the shutter, it is costly to install actuators at both ends of the slats and to dispose linear pressure sensitive sensors on the guide frames on both sides, especially for connecting windows with the middle column removed. In the foreign matter detection device of a shutter, it is difficult to detect foreign matter by attaching actuators to both ends of the slatt.

Therefore, the present invention extends the life of the linear pressure-sensitive sensor by restricting the force for pressing the linear pressure-sensitive sensor so that it is not excessively strong, and can be installed at low cost and can also be used in a shutter for a window window. It is an object of the present invention to provide a foreign matter detection device for a shutter capable of performing the above.

[Means for Solving the Problems]

In order to achieve the above object, the present invention comprises a linear pressure-sensitive sensor (5) arranged on one side of a guide frame (2) for guiding the slats (7) of the slat curtain (1). In a foreign matter detecting device for a shutter, wherein (5) is pressed by an operating mechanism provided on a slat (7) to detect a foreign matter, the operating mechanism comprises an operating section (10) and a switch section (25). , The operating portion (10) is provided at both ends of the slats A and B which are vertically adjacent to each other and are slidably connected to each other in the vertical direction, and when the foreign matter (6) comes in contact, the upper slats A are lowered. It is configured to actuate the switch part (25) and also the switch part (25)
Is composed of a space regulation part (27), a guide frame contact part (28) and a sensor pressing part (29), and the switch part (25) is arranged only in one guide part frame (2). It is attached to one end of a rotary shaft (26) that penetrates the lower slat B to the left and right so as to press the linear pressure sensor (5), and is attached to both ends of the rotary shaft (26). Each operating part (10) (1
The foreign matter detection device of the shutter is configured so as to be operated by (0).

Also, each operating part (10) attached to both ends of slats A and B.
The foreign matter detection device of the shutter may be configured such that (10) is fitted into the rotating shaft (26) via the cam mechanism (40 ... 45) that is detachably engaged.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 11, the shutter foreign matter detection device of the present invention is an electric shutter in which a slat curtain 1 in which left and right guide frames 2 are foldably connected is vertically moved by a motor 4. The actuating parts 10 and 10 are provided at both ends of the slat 7 of the slat curtain 1, respectively, and the rotary shaft 2 of the switch part 25 is provided from the actuating parts 10 and 10 of these two.
By operating 6 to press the linear pressure-sensitive sensor 5 arranged in one guide frame 2 as shown in FIG. 1 to send a detection signal to the shutter control device 3 to stop the motor 4. Since the linear pressure-sensitive sensor 5 is attached and operated in the guide frame 2 on one side, the foreign matter detection device of the shutter can be inexpensively attached, and is suitable for the shutter for the continuous window where the center pillar is removed. It is something that is done.

As shown in FIGS. 1 and 4, the slats 7 of the slatted curtain 1 to which the foreign matter detection device for a shutter of the present invention is attached are vertically movable relative to each other, and the slats 7 are descending. When the lower slats B stop due to contact with the foreign matter 6, the switch 25 is actuated by lowering the upper slats A and presses the linear pressure-sensitive sensor 5 arranged in one of the guide frames 2. I tried to do it, 2
It comprises one operating part 10, 10 and one switch part 25.

First, the operating portion 10 will be described. The operating portion 10 is attached to both ends of the slat as shown in FIGS. 2 and 3, and since the structures are the same, one will be described and the other will be described. Omit it. FIG. 4 shows the actuating part 10 attached to the end of the slat on the side where the linear pressure-sensitive sensor 5 is arranged. The actuating part 10 comprises an upper link 11, an intermediate link 12, and a lower link 13. The upper link 11 is attached to the upper slat A, and the lower link 13 is attached to the lower slat B, which are rotatably connected via an intermediate link 12. The upper slat A and the lower slat B to which the upper link 11 and the lower link 13 are attached have the same construction as the other slats 7 constituting the slatt curtain 1, and are shown in FIGS. 1 and 4. As described above, the lower end of the slat 7 is provided with the ripped connecting groove 20 in the longitudinal direction thereof, and the upper end of the slat 7 is provided with the hook-like connecting piece 21 in the longitudinal direction thereof. Connection groove with rip 20
A hook-shaped connecting piece (21) is locked to the upper and lower sides so as to be vertically movable. As the upper slat A and the lower slat B to which the operating portion 10 is attached, the lower slat which does not hinder the winding of the slat curtain 1 is selected and is attached to any slat adjacent above and below it. By the way, the upper link 11 of the link mechanism is the third
As shown in the figure, insert the mounting block 18 mounted on the upper slat A through the hole 19 below the protrusion of the mounting block 18
A long hole 14 formed at the upper end is fitted and attached to a shaft 15 provided at 18, and the lower end is provided with pins 16, 1 through an intermediate link 12.
7 is rotatably connected to the lower link 13, and when the lower slats B are stopped by contacting the foreign matter 6 as shown in FIG. By approaching Slut B, the upper link
11 is configured to push the intermediate link 12 and rotate the lower link 13 counterclockwise. The lower end of the lower link 13 is fitted on the rotating shaft 26 of the switch 25, which is pivotally supported by the mounting block 22 mounted on the lower slat B, as shown in FIGS. 3 and 4. By rotating the shaft 26, the linear pressure-sensitive sensor 5 arranged in the one guide frame 2 is pressed. In the present invention, as shown in FIGS. 2 and 3, the actuating portion 10 is attached to both ends of the slatt to actuate the rotary shaft 26 of the switch portion 25. Is configured so that the foreign matter sensing device can reliably function at any position on the lower end of the slats.

Next, as shown in FIGS. 2 and 3, the switch portion 25 is
It is located in one guide frame 2 in which a linear pressure-sensitive sensor 5 and a rotating shaft 26 which is rotatably supported by the lower end of the mounting block 22 of the lower slat B and penetrates in the longitudinal direction of the slat. As described above, it is composed of a space regulating portion 27 attached to the end portion of the rotating shaft 26, a guide frame contact portion 28, and a sensor pressing portion 29.

As shown in FIG. 2 and FIG. 4 (b), the interval regulating portion 27 has a disc shape, and is a mounting piece 30 of the linear pressure-sensitive sensor 5 arranged in the guide frame 2 or a rear wall of the guide frame 2. It is attached to the end of the rotating shaft 26 so as to face the 37, and even when the slats swing back and forth due to wind pressure etc.
27 is pressed against the mounting piece 30 or the rear wall 37 of the guide frame 2 to rotate, so that the distance between the linear pressure-sensitive sensor 5 and the rotating shaft 26 is always kept constant. As a result, the pressing force of the sensor pressing portion 29 is always the same, and even when the slats swing, the sensor pressing portion 29 does not come into contact with the linear pressure sensitive sensor 5 unintentionally when it is inoperative. In addition, the interval regulating portion 27 is configured to project from the sensor pressing portion 29 toward the linear pressure sensitive sensor 5.

The guide frame contact portion 28 is a roll 32 attached to one end of a triangular attachment portion 31 fixed to the end portion of the rotary shaft 26 as shown in FIG.
The rotary shaft 26 is rotated in the counterclockwise direction by the lower link 13 of the operating portion 10 by contacting the foreign matter 6 and the guide frame contact portion 28 of the guide frame 2 as shown in FIG. A sensor which will be described later is mounted on the opposite side of the mounting portion 31 by restricting the rotation of the rotating shaft 26 while ensuring that a pressing force is generated on the sensor pressing portion 29 which will be described later when it comes into contact with the front wall 33. The pressing portion 29 is configured so as to prevent the force for pressing the linear pressure sensitive sensor 5 from rotating and becoming larger than necessary, thereby preventing the linear pressure sensitive sensor 5 from being damaged.

Next, the sensor pressing portion 29 will be described. The sensor pressing portion 29 includes a guide frame contact portion 28 of a triangular mounting portion 31 fixed to an end portion of the rotating shaft 26 as shown in FIGS. 1 and 3. It is constituted by a roll 34 attached to the lower position on the opposite side. As shown in FIG. 5, the roll 34 presses the linear pressure-sensitive sensor 5 when the actuating portion 10 is actuated by the contact with the foreign matter 6 and the pivot shaft 26 is pivoted counterclockwise to detect a detection signal. Is sent to the shutter control attachment 3 to stop the motor 4. The linear pressure sensor 5
This is a tape or cord-like on / off switch which is pressed to bring two elastic strip-shaped conductive portions opposed to each other in the tape into contact with each other to conduct electricity and send a detection signal to the shutter control device 3. .

Further, in the foreign matter sensing device of the present invention, the sensor pressing portion 29 of the switch portion 25 is always linearly pressure-sensitive as shown in FIG. 3 so that the slats B function reliably even if they swing to the left and right due to wind pressure or the like. It is configured to maintain the position facing the sensor 5. The rotating shaft 26 of the switch 25 is slidable in the axial direction with respect to the attachment block 22 of the slat B and the lower link 13 of the operating part 10, and the fitting part of the lower link 13 and the gap restricting part 27. In between is a compression spring 35 as shown in FIG.
Is attached to the guide frame 2 so as to constantly urge the gap restricting portion 27 toward the side wall 36 of the guide frame 2 so that the rotating shaft 26 having the sensor pressing portion 29 attached thereto does not move even if the slat B swings in the left-right direction. Is configured.

FIGS. 6 to 10 show another embodiment of the present invention. In the previous embodiment, both actuating parts 10, 10 attached to both ends of the slats or both of them are pivoted. In this embodiment, each of the operating parts 10 and 10 is detachably attached to one rotary shaft through a cam, while the shafts 26 are fitted and configured to operate together. The cam 40 of the operating portion that does not operate does not engage with the cam of the rotating shaft 26 and
Is to rotate freely to reduce the force for operating the switch 25 so that the operation of the foreign substance detection device can be performed lightly, and the motor can be stopped quickly when a foreign substance is detected.

FIG. 6 is an exploded view of the engaging portion between the lower link 13 of the operating portion 10 and the rotating shaft 26 by the cam, which is disassembled into parts.
13 is two cam surfaces 4 provided at the lower end in a relationship of about 120 degrees 4
0, 40 and the semi-arcuate cam 43 of the cam portion 42 fitted to the rotating shaft 26
Is provided with a play portion 41 that plays inward. The cam portion 42 for transmitting the rotation to the rotation shaft 26 is provided with a cam 43 protruding in a semicircular arc shape on the end surface thereof, and the vertical cut surfaces in the axial direction are the cam surfaces 44, 44. Then, the engaging portion 41 of the lower link 13 is loosely engaged with the arcuate inner surface 45 of the semi-arcuate cam 43 of the cam portion 42 fitted to the rotating shaft 26, and the cam surfaces 40, 4 of the lower link 13 are engaged.
0 and the cam surfaces 44, 44 of the cam portion 42 are installed so as to face each other, and as shown in FIG. 7 (a) and (b), the left end of the slats is (a) and the right end of the slats is (b). )like,
The cam surfaces 40 and 44 of both are in contact with each other so as to rotate the rotating shaft 26, respectively, and the cam surfaces 40 and 44 of both are contacted on the opposite side.
Are installed at intervals of about 60 degrees.

FIG. 8 shows the state of the slats when they contact the foreign matter 6 on the right side of the slats. At this time, the right end of the upper slatt A approaches the right end of the lower slats B, but the left end of the slats is the slats themselves. Since it is inclined as shown in FIG. 8, the left end of the upper slat A does not come very close to the left end of the lower slat B, and the operating portion 10 at the left end does not operate. FIG. 9 shows the relationship between the operating portion 10 attached to the left and right ends of the slats in the state of FIG. 8 and the cam portion 42 attached to the rotating shaft 26. At the working part 10
The cam surface 40 of the lower link 13 is in the original state because it is not actuated, but the rotating shaft 26 has the actuating portion at the right end as shown in (b).
Since it is rotated by the operation of 10, it is rotated about 60 degrees. Since the cam surface 40 of the lower link 13 is formed in a relationship of about 120 degrees, this rotation can be smoothly performed without engaging with the cam surface 40 on the opposite side and receiving no resistance. Contrary to FIG. 9, FIG. 10 shows the state of the cam when it contacts the foreign matter 6 on the left side of the slat, and the operating portion 10 at the left end shown in (a) is actuated by the contact of the foreign matter 6. To link at the bottom
The cam surface 40 of 13 is the cam surface of the cam portion 42 fitted to the rotating shaft 26.
Although the rotary shaft 26 is rotated by pressing 44, the cam surface 40 of the lower link 13 is in the original position because the right end operation unit 10 shown in (b) does not operate, and the cam portion 42 of the rotary shaft 26 is in the original position. Although the cam surface 40 of the lower link 13 is not pressed by the rotation, it can be rotated lightly by about 60 degrees. Therefore, since the rotating shaft 26 can be rotated with a small actuating force, the motor can be quickly stopped when the shutter detects a foreign matter.

[Effect of device]

The present invention is configured as described above, and the guide frame abutting portion is provided in the switch portion so as to prevent the operation by the upper slat from being applied more than necessary. Since the pressing force on the linear pressure-sensitive sensor is properly controlled to prevent damage to the linear pressure-sensitive sensor and prolong its service life, the operating parts at both ends of the slatt are fitted to one rotating shaft to operate. Since the linear pressure-sensitive sensor only needs to be installed on one switch part and the guide frame on one side, the foreign matter detection device can be attached at a low cost, especially for a shutter for a continuous window where the center pillar is removed. It is most suitable as a foreign matter detection device to be attached.

Furthermore, since the operating parts attached to both ends of the slats are fitted to the rotating shaft via the cam mechanism that engages with the slidably, the operating part that does not operate when the foreign matter comes in contact is the rotating shaft. Since it does not spin on the other hand and is not moved by the other operating part, the operation of the switch part becomes light and the motor can be stopped quickly when the shutter detects a foreign matter.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of the foreign matter detecting device of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 3, and FIG. 3 is III-III of FIG.
A cross-sectional view of the line, FIG. 4 (a) (b) is IV (a)-of FIG.
Sectional views of line IV (a) and IV (b) -IV (b), respectively, FIG. 5 is a sectional view when contacting a foreign object, and FIG. 6 is an exploded perspective view of a cam portion of another embodiment. 7 (a) and (b) are cross-sectional views of both ends of the slurry, FIG. 8 is a cross-sectional view of the shutter when it is in contact with a foreign object, and FIG. 9 (a) (b).
Are cross-sectional views of both ends of the slats when foreign matter contacts the right end of the slat, and Fig. 10 (a) and (b) are cross-sectional views of both ends of the slats when foreign matter contacts the left end of the slat. 11
Fig. 12 is a general view of the shutter, Fig. 12 and Fig. 13 are the devices before improvement of the present invention, Fig. 12 shows the inoperative condition, and Fig. 13
The drawings are cross-sectional views showing the states during operation. 1 ... Slat curtain, 2 ... Guide frame, 5 ... Linear pressure sensor, 7 ... Slat, 10 ... Operating part, 25 ... Switch part, 26 ... Rotating shaft, 27 ... Interval Restriction part, 28 ... Guide frame contact part, 29 ... Sensor pressing part, 35 ... Compression spring, 40,44 ... Cam surface, 42 ... Cam part

Claims (2)

[Scope of utility model registration request] 1. A slat (7) for a slat curtain (1).
A linear pressure-sensitive sensor (5) is provided on one side of a guide frame (2) for guiding the foreign matter, and the linear pressure-sensitive sensor (5) is pressed by an operating mechanism provided on the slat (7) to remove foreign matter. In the foreign matter detection device for a shutter, the actuation mechanism includes an actuation part (10) and a switch part (25), and the actuation part (10) is connected to the slats vertically movable relative to each other. It is provided at both ends of the vertically adjacent slats A and B, and is configured to operate the switch part (25) by lowering of the upper slat A when the foreign matter (6) comes into contact, and the switch part (25 ) Is the space regulation unit (2
7), a guide frame abutting part (28) and a sensor pressing part (29), and the switch part (25) is provided in only one of the guide frames (2). ) Is attached to one end of a rotary shaft (26) that penetrates the lower slat B in the left and right direction, and each operating portion (10) attached to both ends of the rotary shaft (26). (10) A foreign matter detection device for a shutter, which is configured to be activated by (10). 2. A cam mechanism (40 ...) With which the respective operating parts (10) (10) attached to both ends of the slats A and B engage with each other in a disengageable manner.
45. The rotary shafts (26) are fitted with each other through 45).
The shutter foreign matter detection device described.