JP2005016058A - Shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter device for maintaining the durability of a shutter curtain so as to be usable over a long period of time by detecting the lateral dislocation of a slat and the lateral dislocation of the whole shutter curtain in an initial stage. <P>SOLUTION: This shutter device comprises a winding shaft 8 for winding the shutter curtain 2, and a driving device 10 for rotationally driving the winding shaft 8, inside a case 6. Lateral dislocation detecting sensors 12b are disposed in positions close to the right and left end parts of the shutter curtain 2 wound on the winding shaft 8. The lateral dislocation detecting sensor 12b is provided with a movable arm moving in a prescribed direction by contacting the laterally dislocated position of the slat or the laterally dislocated position of the whole shutter curtain, and a displacement sensor or the like for detecting the movement of the movable arm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic opening / closing shutter device provided in an opening of a building such as a house.
[0002]
[Prior art]
As a conventional shutter device, a shutter curtain that moves up and down along a pair of guide rails that are erected apart from each other on the left and right sides of the opening, and winding up and rewinding the shutter curtain by transmitting rotational force from the motor 2. Description of the Related Art An automatic opening / closing type shutter device that includes a winding member that performs the above is known (see, for example, Patent Document 1).
[0003]
The shutter curtain is a member formed by connecting a plurality of slats in the vertical direction, and the slats may cause a lateral shift at a connecting portion between the slats while repeatedly moving up and down. Therefore, in order to prevent the lateral displacement of the slat, a structure in which a lateral displacement prevention member is integrally provided at the end portion of the slat located in the guide rail (for example, refer to Patent Document 2), or a displacement prevention member is provided at a connection portion between the slats. It has been proposed to adopt a structure to be incorporated (for example, see Patent Document 3).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 06-257359 [Patent Document 2]
Japanese Patent Laid-Open No. 08-158765 [Patent Document 3]
Japanese Patent Application Laid-Open No. 09-228762
[Problems to be solved by the invention]
However, even if the structure that prevents the lateral displacement of the slats described above is adopted, the lateral displacement of the slats or the lateral displacement of the entire shutter curtain may occur due to changes in the winding member, slat bending, warpage, etc. It always occurs. If you raise and lower the shutter without knowing such a state, the end of the slat will be caught or damaged by the upper end of the guide rail, and the motor will be overloaded, which will Life may be reduced.
[0006]
The present invention has been made in view of the above circumstances, and by detecting the lateral displacement of the slats and the lateral displacement of the entire shutter curtain at an early stage, the shutter that maintains the durability of the shutter curtain and enables long-term use. An object is to provide an apparatus.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a shutter device according to the present invention includes a shutter curtain in which a plurality of slats are vertically connected, and is provided on the left and right sides of the shutter curtain, and when the shutter curtain moves up and down, A pair of guide rails for guiding left and right ends of the shutter curtain, a winding member provided on the upper part of the pair of guide rails, for winding the shutter curtain, a driving device for rotating the winding member, and A lateral deviation detecting means provided at a position close to the left and right end portions of the shutter curtain wound around the winding member, and detecting the lateral deviation of the slats or the lateral deviation of the entire shutter curtain; It is characterized by that.
[0008]
In the present invention, the lateral deviation detecting means can detect the lateral deviation of the slats or the lateral deviation of the entire shutter curtain at an initial stage, so that the slats can be corrected to the correct position or the shutter curtain is normal. Maintenance can be performed at an early stage so as to be in a state, and the durability of the shutter curtain can be maintained and long-term use is possible.
[0009]
Here, the lateral displacement detecting means is moved to a position where the slat is laterally displaced or a position where the lateral displacement of the entire shutter curtain is in contact with the movable arm, and the movable arm is moved. It is preferable to include a displacement sensor that detects lateral shift by detecting this. In this way, the lateral deviation detecting means can be configured with a simple structure.
[0010]
Moreover, it is preferable that the displacement sensor is constituted by a micro switch that mechanically detects the movement of the movable arm. This further simplifies the lateral deviation detection means.
[0011]
Furthermore, it is preferable that a contact portion of the movable arm that contacts a position where the slat is laterally displaced or a position where the entire lateral displacement of the shutter curtain occurs is a roller. If it does in this way, the damage by the contact of the edge part of the shutter curtain currently wound up by the winding-up member will be prevented.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the shutter device of the present embodiment is provided with a shutter curtain 2 that opens and closes an opening of a building, and is erected on the left and right sides of the shutter curtain 2 to guide the up-and-down movement of the shutter curtain 2. A pair of guide rails 4, 4, a winding shaft 8 that winds up the shutter curtain 2 provided in a case 6 disposed above the pair of guide rails 4, 4, and a drive that rotationally drives the winding shaft 8 A pair of lateral displacement detection sensors 12a and 12b provided at positions close to the right and left ends of the apparatus 10 and a shutter curtain 2 (winding curtain portion RC described later) wound on the winding shaft 8 in the case 6; An alarm for issuing an alarm such as a buzzer based on the detection information of the switchboard SW for operating the driving device 10 and the lateral deviation detection sensors 12a and 12b. And a beam device AL.
[0013]
The shutter curtain 2 is configured by connecting a plurality of elongated slats 14 one above the other. The upper end portion of the shutter curtain 2 is fixed to the winding shaft 8 in the case 6. A seat plate 16 is provided at the lower end of the shutter curtain 2.
[0014]
Each of the pair of guide rails 4 and 4 has a substantially U-shaped cross section, and the openings of the guide rails are arranged to face each other. Both end portions of the shutter curtain 2 are inserted into the guide grooves formed by the internal spaces of the guide rails 4 and 4, and both end portions of the shutter curtain 2 are guided into the guide grooves so as to move up and down. Yes.
[0015]
The winding shaft 8 in the case 6 is rotatably supported by the left and right bearing brackets 18a and 18b. A driving device 10 is disposed on the right end side of the winding shaft 8.
[0016]
As shown in FIG. 2, the drive device 10 is coaxially fixed to the right-side end portion of the winding shaft 8 and the forward / reverse rotation type electric motor 20 fixed to the left bearing bracket 18 b via the motor bracket 20 a. A take-up sprocket 22 and a roller-type chain 24 spanned between the take-up sprocket 22 and the output shaft sprocket 20 b of the electric motor 20.
[0017]
When the winding switch of the switch panel SW is operated, the electric motor 20 is driven to rotate in the forward direction, whereby the rotation in the forward direction of the output shaft sprocket 20b is transmitted to the winding sprocket 22 via the chain 24, and the shutter The curtain 2 is wound around the outer periphery of the winding shaft 8. When the rewind switch of the switch panel SW is operated, the reverse rotation of the output shaft sprocket 20b is transmitted to the take-up sprocket 22 via the chain 24 by the reverse rotation of the electric motor 20, and the shutter curtain 2 is moved. It is rewound from the outer periphery of the winding shaft 8. Here, the shutter curtain 2 wound around the outer periphery of the winding shaft 8 is referred to as a winding curtain portion RC.
[0018]
As shown in FIG. 1, the pair of lateral deviation detection sensors 12 a and 12 b are fixed to the sides facing the left and right end portions of the winding curtain portion RC of the left and right bearing bukerats 18 a and 18 b, respectively. As shown in FIGS. 3 and 4, these lateral deviation detection sensors 12 a and 12 b are connected to a sensor base 30 fixed to the left and right bearing brackets 18 a and 18 b and to the sensor base 30 via a rotation shaft 32. The movable arm 34 includes a torsion coil spring 36 that restricts the movable arm 34 from rotating about the rotation shaft 32, and a displacement sensor 38 that detects that the movable arm 34 rotates about the rotation shaft 32.
[0019]
The movable arm 34 is a member made of a plate member having an approximately rectangular parallelepiped appearance, and the rotary shaft 32 penetrates on one side in the width direction, and is bent in a substantially square shape on the other side in the width direction. A portion 34a is formed.
[0020]
As shown in FIG. 5A, the torsion coil spring 36 includes a coil portion 36a and a pair of spring end portions 36b and 36c extending from both ends of the coil portion 36a. The coil portion 36a is a rotating shaft. 32, the pair of spring ends 36b, 36c are engaged with the movable arm 34 and the support plate 30a of the sensor base 30 facing the movable arm 34, so that the rotation of the movable arm 34 is restricted by the spring force. Has been. As shown in FIG. 5B, when a pressing force in the direction of the arrow acts on the bent portion 34 a of the movable arm 34, the movable arm 34 rotates around the rotation shaft 32 against the spring force of the torsion coil spring 36. Rotate to.
[0021]
As shown in FIG. 6, the displacement sensor 38 includes a lever 38a, a pin push button 38b that performs an ON / OFF operation according to the displacement of the lever 38a, and a sensor main body that converts the operation of the pin push button 38b into an electrical signal. The sensor main body 38 c is fixed to the sensor base 30. Then, when the movable arm 34 shown in FIG. 5B rotates around the rotation shaft 32, the movable arm 34 moves in the direction of the broken arrow in FIG. The contact portion 34b provided on the arm 34 comes into contact with the lever 38a to give a displacement (the state of the lever 38a shown by the broken line in FIG. 6), and the pin push button 38b is turned on by the displacement of the lever 38a. When the pin push button 38b is turned on, an electrical signal is sent from the sensor main body 38c to the alarm device AL, and the alarm device AL issues an alarm such as a buzzer.
[0022]
Further, as shown in FIG. 5A, when the movable arm 34 returns to the original state by the restoring force of the spring force of the torsion coil spring 36, the lever 38a returns to turn the pin push button 38b OFF, The electric signal is not sent from the sensor main body 38c to the alarm device AL, and the alarm of the alarm device AL is stopped.
[0023]
FIG. 7 shows a lateral deviation detection sensor 12b fixed to the right bearing bracket 18b. The lateral deviation detection sensor 12b is configured such that the apex of the bent part 34a of the movable arm 34 is the right end of the winding curtain part RC. It arrange | positions so that it may adjoin to a part.
[0024]
In FIG. 7, some slats 14A of the winding curtain portion RC move to the right side from the other slats 14B, 14C, and 14D, causing a lateral shift. The movable arm 34 of the lateral deviation detection sensor 12b comes into contact with the end portion of the slat 14A where the lateral deviation occurs and rotates around the rotation shaft 32. The lever 38a is displaced by the rotation of the movable arm 34, and an electric signal is sent from the sensor main body 38c to the alarm device AL by the ON operation of the pin push button 38b, and the alarm device AL issues an alarm such as a buzzer. When the alarm device AL issues an alarm, it can be determined that the shutter curtain 2 is not normally wound around the winding shaft 8.
[0025]
Although not shown in detail, the lateral deviation detection sensor 12a fixed to the left bearing bracket 18a is also arranged so that the apex of the bent portion 34a of the movable arm 34 is close to the left end of the winding curtain portion RC. Has been placed. As a result, even when some slats of the winding curtain portion RC move to the left from other slats to cause a lateral displacement, a lateral displacement detection sensor is provided at the end of the slat that has caused the lateral displacement. The movable arm 34 of 12a contacts and rotates around the rotating shaft 32. The lever 38a is displaced by the rotation of the movable arm 34, and an electric signal is sent from the sensor main body 38c to the alarm device AL by the ON operation of the pin push button 38b, and the alarm device AL issues an alarm such as a buzzer. When the alarm device AL issues an alarm, it can be determined that the shutter curtain 2 is not normally wound around the winding shaft 8.
[0026]
Even when the shutter curtain 2 is wound around the winding shaft 8 in the shape of a bamboo shoot, the movable arms 34 of the lateral shift detection sensors 12a and 12b come into contact with the ends of the bamboo shoot-shaped shutter curtain 2 and the rotation shafts. Similarly, since it rotates around 32, it can be determined that the alarm device AL issues a warning and the shutter curtain 2 is not normally wound around the winding shaft 8.
Therefore, when a lateral displacement occurs in some slats 14 of the winding curtain portion RC, or when the entire shutter curtain 2 wound around the winding shaft 8 is laterally displaced like a bamboo slab, the lateral displacement state is changed to the lateral displacement. Since the detection sensors 12a and 12b detect in the initial stage and the alarm device AL issues an alarm such as a buzzer, the maintenance work is performed early so that the slat 14 is corrected to the correct position and the shutter curtain 2 is in a normal state. It can be performed.
[0027]
Further, it is almost impossible to keep the shutter curtain 2 moving up and down without knowing that the lateral displacement of the slat 14 has occurred, and the end of the slat 14 is caught or damaged by the upper end of the guide rail 4. In addition, since the overload applied to the electric motor 20 is eliminated, the durability of the shutter device can be maintained and long-term use can be enabled.
[0028]
Further, the lateral deviation detection sensors 12a and 12b are simply composed of a sensor base 30, a movable arm 34 rotatably connected to the sensor base 30, a displacement sensor 38 that detects that the movable arm 34 has rotated, and the like. Can be configured with a structure.
[0029]
Next, what is shown in FIG. 8 to FIG. 12 shows a lateral deviation detection sensor 40 having a configuration different from the lateral deviation detection sensors 12a and 12b shown in FIG. 3 to FIG. In addition, the same code | symbol is attached | subjected to the component same as the structure of the lateral deviation detection sensors 12a and 12b shown in FIGS. 3-7, and the description is abbreviate | omitted.
[0030]
The lateral deviation detection sensor 40 of the present embodiment is fixed to the sides facing the left and right end portions of the winding curtain portion RC of the left and right bearing bukerats 18a and 18b shown in FIG.
As shown in FIGS. 8, 9 and 10A, the lateral deviation detection sensor 40 includes a sensor base 42 fixed to the left and right bearing brackets 18a and 18b, and a rotational axis 44 attached to the sensor base 42. The connected movable arm 46, the torsion coil spring 36 that restricts the movable arm 46 from rotating about the rotation axis 44, the adjustment unit 48 that adjusts the initial position of the movable arm 46, and the movable arm 46 is the rotation axis 44. And a displacement sensor 38 for detecting rotation around.
[0031]
The movable arm 46 includes an arm main body 46a made of a plate-like member whose longitudinal end is bent at a right angle, and a movable roller 46c rotatably supported by a support shaft 46b fixed to the arm main body 46a. Yes.
In the torsion coil spring 36, the coil portion 36 a is wound around the rotating shaft 44, and the pair of spring end portions 36 b and 36 c are engaged with the arm main body 46 a and the support plate 42 a of the sensor base 42 facing the arm main body 46 a. The rotation of the movable arm 46 is restricted by the spring force. The adjustment portion 48 is a screw (hereinafter referred to as an adjustment screw 48) that penetrates the arm body 46a and has a tip abutting against the contact plate 42b of the support plate 42a. Is adjusted, the initial position of the movable arm 46 is adjusted.
As shown in FIG. 10B, when a pressing force in the direction of the arrow acts on the movable roller 46 c of the movable arm 46, the movable arm 46 moves around the rotation shaft 44 against the spring force of the torsion coil spring 36. Rotate.
[0032]
As for the displacement sensor 38 comprised by the micro switch, the sensor main body 38c is being fixed to the sensor base 42. FIG. Then, when the movable arm 46 shown in FIG. 10B is rotated around the rotation axis 44, the movable arm 34 is moved in the direction of the broken arrow in FIG. The contact part 46d provided on the lever 38a contacts the lever 38a to give a displacement (the state of the lever 38a shown by the broken line in FIG. 11), and the pin push button 38b is turned on by the displacement of the lever 38a. When the pin push button 38b is turned on, an electrical signal is sent from the sensor main body 38c to the alarm device AL, and the alarm device AL issues an alarm such as a buzzer.
[0033]
Further, as shown in FIG. 10A, when the movable arm 34 returns to the original state due to the restoring force of the spring force of the torsion coil spring 36, the lever 38a returns to turn the pin push button 38b OFF, The electric signal is not sent from the sensor main body 38c to the alarm device AL, and the alarm of the alarm device AL is stopped.
[0034]
FIG. 12 shows a lateral deviation detection sensor 40 fixed to the right bearing bracket 18b. In the lateral deviation detection sensor 40, the movable roller 46c of the movable arm 46 is close to the right end of the winding curtain section RC. Are arranged to be.
[0035]
In FIG. 12, some slats 14A of the winding curtain portion RC move to the right side from the other slats 14B, 14C, 14D, causing a lateral shift. The movable arm 46 rotates around the rotation shaft 44 by the movable roller 46c coming into contact with the end portion of the slat 14A where the lateral displacement occurs. The lever 38a is displaced by the rotation of the movable arm 46, and an electric signal is sent from the sensor main body 38c to the alarm device AL by the ON operation of the pin push button 38b, and the alarm device AL issues an alarm such as a buzzer. When the alarm device AL issues an alarm, it can be determined that the shutter curtain 2 is not normally wound around the winding shaft 8.
[0036]
Further, the lateral deviation detection sensor 40 is also disposed on the left bearing bracket 18a so that the movable roller 46c is close to the left end of the winding curtain portion RC. Thereby, even when some slats of the winding curtain portion RC move to the left side from other slats to generate a lateral displacement, a lateral displacement detection sensor is provided at the end of the slat that has caused the lateral displacement. When the 40 movable rollers 46c come into contact with each other while rotating, the movable arm 46 rotates around the rotation shaft 44. The lever 38a is displaced by the rotation of the movable arm 46, and an electric signal is sent from the sensor main body 38c to the alarm device AL by the ON operation of the pin push button 38b, and the alarm device AL issues an alarm such as a buzzer. When the alarm device AL issues an alarm, it can be determined that the shutter curtain 2 is not normally wound around the winding shaft 8.
[0037]
Further, even when the shutter curtain 2 is wound around the winding shaft 8 in the form of a bamboo shoot, the movable roller 46c of the lateral shift detection sensor 40 contacts the end of the bamboo shoot-like shutter curtain 2 while rotating, and is movable. Similarly, since the arm 46 rotates about the rotation shaft 32, the alarm device AL issues a warning, and it can be determined that the shutter curtain 2 is not normally wound around the winding shaft 8.
Therefore, also in this embodiment, a lateral displacement occurs in a part of the slats 14 of the winding curtain portion RC, or the entire shutter curtain 2 wound around the winding shaft 8 has a lateral displacement in the shape of a bamboo shoot. In addition, it is possible to correct the slat 14 in a correct position or to perform maintenance work to make the shutter curtain 2 in a normal state at an early stage.
[0038]
In addition, since it is almost impossible to keep the shutter curtain 2 moving up and down without knowing that the lateral displacement of the slat 14 has occurred, it is possible to maintain the durability of the shutter device and enable long-term use. .
Further, the lateral displacement detection sensor 40 has a simple structure including a sensor base 42, a movable arm 46 that is rotatably connected to the sensor base 42, a displacement sensor 38 that detects that the movable arm 46 is rotated, and the like. Can be configured.
Furthermore, in this embodiment, the movable roller 46c of the lateral deviation detection sensor 40 contacts the end of the shutter curtain 2 wound around the winding shaft 8 where the lateral deviation has occurred, while rotating. It is possible to prevent damage due to contact between the two ends.
[0039]
In the above-described embodiment,
[0040]
【The invention's effect】
As described above, according to the shutter device of the present invention, the lateral deviation detecting means can detect the lateral deviation of the slat or the lateral deviation of the entire shutter curtain at the initial stage, so that the slat can be correctly positioned. The maintenance can be performed at an early stage so that the shutter curtain is in a normal state, and the durability of the shutter curtain can be maintained and long-term use is possible.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a shutter device according to the present invention.
FIG. 2 is a view taken along the line II-II in FIG.
FIG. 3 is a diagram showing a specific structure of a lateral deviation detecting means which is a constituent member of the present invention.
4 is a view taken along the line IV-IV in FIG. 3;
FIG. 5 is a view taken along the line VV in FIG. 3;
FIG. 6 is a diagram showing a state in which a displacement sensor constituting a lateral deviation detecting unit according to the present invention detects the movement of a movable arm.
FIG. 7 is a diagram showing a state in which a lateral deviation detecting unit according to the present invention detects lateral deviation of a slat.
FIG. 8 is a diagram showing a specific structure of a lateral deviation detecting unit having a structure different from that in FIG. 3;
9 is a view taken along line IX-IX in FIG.
10 is a view taken along the line XX of FIG.
11 is a view showing a state in which a displacement sensor constituting the lateral deviation detecting means shown in FIG. 8 detects the movement of the movable arm.
12 is a diagram showing a state in which the lateral deviation detecting means shown in FIG. 8 detects a lateral deviation of a slat. FIG.
[Explanation of symbols]
2 Shutter curtain 4 Guide rail 8 Winding shaft (winding member)
10 Drive devices 12a, 12b Lateral deviation detection sensor (lateral deviation detection means)
14, 14A, 14B, 14C Slat 40 Lateral deviation detection sensor (lateral deviation detection means)

Claims (1)

A shutter curtain in which a plurality of slats are vertically arranged; a pair of guide rails which are erected on the left and right of the shutter curtain and guide the left and right ends of the shutter curtain when the shutter curtain moves up and down; A winding member that winds up the shutter curtain, a drive device that rotationally drives the winding member, and left and right end portions of the shutter curtain that are wound around the winding member. And a lateral deviation detecting means for detecting occurrence of lateral deviation of the slats or lateral deviation of the entire shutter curtain.

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