JP2535375Y2 - Shutter door safety device - Google Patents

Description

Detailed description of the invention [Industrial application field] The present invention relates to a safety device for a shutter door, and more specifically, simplifies a control system for controlling a shutter door driving means based on a detection result of a pressure-sensitive sensor. And a technique for stably operating the apparatus for a long period of time.

[Prior Art] Conventionally, a shutter door 2 pivotally connected to a large number of slats 1 is configured to be electrically driven to open and close, and pressure changes over substantially the entire length of the lower end edge of the lowermost slat 1a of the many slats 1. Is provided with a pressure-sensitive sensor 3 that converts the pressure into an electrical change. In a safety device for a shutter door that controls driving means of the shutter door 2 based on an electrical change caused by a pressure change of the pressure-sensitive sensor 3, As shown in JP-A-63-167877 shown in FIGS. 7 and 8, a box-shaped block 11 is provided so as to protrude laterally from the lowermost slat 1a,
A light emitting device 12 having an infrared light emitting circuit in the block 11
, A dry cell storage unit 13, an infrared light emitting element 14 is arranged at the upper end of the block 11, and an infrared light receiving element 15 is fixedly mounted. The infrared light receiving element 15 can control the driving means of the shutter door 2. The infrared light emitting device 14 is connected to the light emitting device 12 and the pressure sensitive sensor 3 is connected. The light emitting device 14 emits light from the infrared light emitting device 14 based on the detection result of the pressure detection of the pressure sensitive sensor 3. Fifteen
The light is emitted, and the driving means such as the electric motor 21 is controlled to stop the lowering of the shutter door 2 or to raise the shutter door 2 for safety. by the way,
In order to control the driving means based on the detection result of the pressure sensor 3 provided on the lowermost slat 1a, a control signal from the pressure sensor 3 is transmitted through a number of slats 1 pivotally connected to each other. It is difficult to do.

[Problem to be solved by the invention] As described above, the lowermost slat that moves up and down
In the control configuration for receiving the infrared light emitted from the infrared light emitting element 14 provided in 1a by the fixed infrared light receiving element 15 and controlling the driving means of the shutter door 2, a device for infrared light emission and infrared light receiving is required. And these light emitting elements 14
And the light-receiving element 15 must be configured so as to be able to sufficiently detect even the place where the lowermost slat 1a descends most, which complicates the safety device, increases the cost, and stably stabilizes it for a long time. There were problems such as difficulty in operation.

The present invention has been made in view of such a problem, and a purpose thereof is to effectively utilize a vertical guide body that guides a shutter door that pivotally connects a number of slats to a pressure-sensitive sensor. From the control signal, the control system can be greatly simplified,
Another object of the present invention is to provide a safety device for a shutter door that can suppress rattling noise when ascending and descending and can operate stably for a long period of time.

[Means for Solving the Problems] The shutter door safety device according to the present invention is configured such that a shutter door 2 pivotally connected to a large number of slats 1 can be driven to open and close by electric drive. A pressure-sensitive sensor 3 for converting a pressure change into an electrical change over substantially the entire length of the lower end edge of the slat 1a is provided, and a driving means for the shutter door 2 is provided based on the electrical change caused by the pressure change of the pressure-sensitive sensor 3. 7. A safety device for a shutter door that controls the shutter door 7, and a pair of conductive strips 6, 6 on the front and rear surfaces inside a groove-shaped guide rail 4 that guides right and left ends of the shutter door 2.
Are provided over substantially the entire upper and lower lengths, and the conductive strips 6, 6 are electrically connected to the control unit of the driving means, and are elastically slidably contacted and electrically connected to the conductive strips 6 via elastic contact means. A pair of sliding contacts 10, 10 are provided on the front and rear surfaces of the lowermost slat 1a, and the sliding contacts 10 are electrically connected to the pressure-sensitive sensor 3 to form a narrow neck from both side ends of the lowermost slat 1a. The guide body 27 is protruded, and the guide body 27 is inserted into the guide groove 28 so as to sandwich the narrow neck portion.

[Operation] As described above, a pair of conductive strips 6 are provided on the front and rear surfaces inside the groove-shaped guide rail 4 for guiding the left and right ends of the shutter door 2.
The conductive strips 6, 6 are electrically connected to the control unit of the driving means, and are electrically connected to the conductive strip 6 by elastically slidingly contacting them via elastic contact means. A pair of sliding contacts 10, 10 are provided on the front and rear surfaces of the lowermost slat 1a, the sliding contact 10 is electrically connected to the pressure-sensitive sensor 3, and the narrow neck portion is formed from both side ends of the lowermost slat 1a. The formed guide body 27 is protruded, and the guide body 27 is inserted into the guide groove 28 by sandwiching the narrow neck portion, so that the required groove-shaped guide rail 4 is used, and the conductive band 6, 6 and sliding contacts 10 electrically connected to the pressure-sensitive sensor 3 on the conductive bands 6 and 6, respectively.
10 only needs to be in sliding contact, the conventional infrared light emitting element and light receiving element are omitted, the control system is greatly simplified, and the inside of the groove-shaped guide rail 4 that guides the left and right ends of the shutter door 2. A pair of conductive strips 6, 6 are provided on the front and rear surfaces of the conductive strip 6, substantially vertically over the entire length thereof, and the conductive strips 6, 6 are electrically connected to the control unit of the driving means. A pair of sliding contacts 10, 10 which are slidably contacted with and electrically connected to the lowermost slat 1a are provided on the front and rear surfaces of the lowermost slat 1a, respectively. Is the conductive band
The guide body 27 having a narrow neck is protruded from both side ends of the lowermost slat 1a so as to be in sliding contact with 6, 6, and the guide body 27 is inserted into the guide groove 28 with the narrow neck sandwiched. The lower slat 1a can be lifted and lowered smoothly, and it is possible to avoid the sliding contacts 10, 10 from properly contacting the conductive strips 6, 6 without strongly contacting the conductive strips 6, thereby preventing the conductive action from being hindered. Things.

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

As shown in FIG. 1, the shutter door 2 is, for example, a bay window 16.
Although it is constructed as the shutter 17 in the above, it may be constructed in other places. The shutter door 2 is formed by vertically connecting a slat 1 having a horizontal width and a small width to a vertical direction.
Is connected to a recessed locked portion 19 on the lower edge of the upper slat 1 so as to be relatively rotatable within a certain range, and the electric motor 21 as the driving means 7 rotates forward to rotate the center winding drum. (Not shown)
And rewind freely by reversing, and bay window
Groove-shaped guide rails 4, 4 erected on the left and right edges of 16 openings
The left and right ends of the shutter door 2 are slid and guided by the
The lower frame 16 can be switched between a closed state in which the lowermost slat 1a abuts on the lower frame 22 and an open state in which the slat 1a rises high. Such a shutter door 2
The rise completion position and the descent completion position of the shutter door 2 are detected by a limit switch provided when the shutter door 2 is assembled, and the electric motor 21 is controlled based on the detection result. The stroke can be set to determine the lifting limit.

Many slats 1 are made of a metal plate, and the lowermost slat 1a, left and right grooved guide rails 4, lower frame 22, upper frame
The outer shell 23 and the outer shell case 24 are made of a metal extruded product and have sufficient fire resistance and security.

The lower edge of the lowermost slat 1a has a groove 25 over its entire length.
The pressure-sensitive sensor 3 for converting a pressure change into an electrical change is fitted and held in the concave groove 25. An electrically insulating material 26 such as a vinyl chloride resin is adhered to the entire inner surface of the groove-shaped guide rail 4 for guiding the left and right end portions of the shutter door 2. For example, conductive bands 6, 6 of stainless steel are stuck on the entire length in the vertical direction. The sliding contacts 10, 10 having spring properties are attached to the front and rear surfaces of the side ends of the lowermost slat 1a, and the sliding contacts 10, 10 are brought into sliding contact with the conductive strips 6, 6 to make electrical contact. Are connected. The sliding contacts 10, 10 are connected to the lead wires 9, 9 with the pressure-sensitive sensor 3.
Are connected to the connection terminals of
Are electrically connected. The sliding contact 10 is attached to the lowermost slat 1a while being electrically insulated.

In this manner, the required groove-shaped guide rails 4 are used, and the conductive strips 6, 6 are provided along the guide rails 4, and the sliding contacts 10 electrically connected to the pressure-sensitive sensors 3 are connected to the conductive strips 6, 6. When the shutter door 2 is lowered by electric drive,
For example, when a hand or an arm is caught between the shutter door 2 and the lower frame 22, the pressure change by the pressure sensor 3 is converted into an electric change, and the pressure sensor 3 becomes a so-called touch switch. Is input to the control unit 8 via the lead wires 9, 9, the sliding contacts 10, 10, and the conductive bands 6, 6, and stops or reverses the electric motor 21 to stop or raise the lowering of the shutter door 2. It is safe. Fifth
In the example circuit of the figure, an example is shown in which the control unit 8 is connected to a terminal for stopping the motor, but it may be connected to a terminal for ascent to perform ascent control. In such cases,
The sliding contacts 10, 10 slidingly contact the conductive bands 6, 6 with a spring property, so that rattling of the lowermost slat 1a can be suppressed, and quiet elevation can be performed. A guide body 27 protrudes from the side end of the lowermost slat 1a.
By being guided by 28, smooth lifting and lowering is achieved, and sliding contacts 10, 10 are prevented from strongly contacting the conductive bands 6, 6.

The pressure-sensitive sensor 3 is, for example, a composite material in which silicon rubber and metal fine particles are combined. The pressure-sensitive sensor 3 has both the characteristics of an elastomer and the conductive characteristics, and is suitable for stimulating pressure at an arbitrary position in the length direction of the pressure-sensitive sensor 3. Accordingly, the resistance rapidly changes from an insulating state (several tens of MΩ or more) to a conductive state (several Ω or less). For example, as shown in FIG. There is a cord switch (manufactured by Bridgestone Corporation) in which the piezoelectric rubber 29 and the flat braided wire 30 are combined and covered with the silicone rubber 31, but other known switches may be used.

[Effects of the Invention] In summary, the present invention provides a pair of conductive bands on the front and rear surfaces of a groove-shaped guide rail for guiding the left and right end portions of the shutter door in substantially the entire vertical direction, and the conductive band serves as a driving means. A pair of sliding contacts are provided on the front and rear surfaces of the lowermost slat, the pair of sliding contacts being electrically connected to the control unit and elastically slidably contacting the conductive belt via elastic contact means and electrically connected thereto. The child is electrically connected to the pressure-sensitive sensor, and the guide body forming the narrow neck is protruded from both ends of the lowermost slat, and the guide body is inserted into the guide groove by sandwiching the narrow neck, The required groove-shaped guide rail is used, a conductive band is provided along this guide rail, and only a sliding contact electrically connected to the pressure sensor is required to slide on the conductive band. The light emitting element and light receiving element can be omitted, and the control system is greatly simplified. A pair of conductive bands are provided on the front and rear surfaces of a groove-shaped guide rail that guides the left and right ends of the shutter door, and the conductive bands are electrically connected to the control unit of the driving means. A pair of sliding contacts that are connected and elastically slidably contact the conductive strip via elastic contact means and are electrically connected are provided on the front and rear surfaces of the lowermost slat, and provided on the lowermost slat. While the sliding contact element is in sliding contact with the conductive band, a guide body having a narrow neck portion protrudes from both side ends of the lowermost slat, and the guide body is inserted into the guide groove with the narrow neck portion sandwiched. There is an advantage that the lowermost slat can be raised and lowered smoothly, and the sliding contact can be properly contacted without strongly sliding on the conductive band to prevent the conductive action from being hindered.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view, partially omitted, of one embodiment of the present invention, FIG. 2 is a partially enlarged sectional view, FIG. 3 is a plan view, partially omitted, and FIG. FIG. 5 is a schematic circuit diagram of the above, FIG. 6 is a cutaway perspective view of the same pressure-sensitive sensor, FIG. 7 is a partial perspective view of a conventional example, and FIG. 8 is a sectional view of the same. 1 is a slat, 2 is a shutter door, 3
Is a pressure-sensitive sensor, 4 is a guide rail, 5 is a vertical surface, 6 is a conductive band, 7 is a driving means, 8 is a control unit, 10 is a sliding contact, 27 is a guide body, and 28 is a guide groove.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Hisashi Tsunemoto 135 Nakamaruko, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fuji Sash Co., Ltd. (56) References

Claims (1)

(57) [Scope of request for utility model registration] A shutter door pivotally connected to a number of slats is configured to be electrically driven to open and close, and converts a pressure change into an electrical change over substantially the entire length of a lower end edge of a lowermost slat of the plurality of slats. A safety device for a shutter door that controls a driving means of the shutter door based on an electrical change caused by a pressure change of the pressure sensor, and guides left and right ends of the shutter door. A pair of conductive strips are provided on the front and rear surfaces of the inside of the groove-shaped guide rail for substantially the entire vertical length, and the conductive strips are electrically connected to the control unit of the driving means, and are elastically connected to the conductive strips through elastic contact means. A pair of sliding contacts are provided on the front and rear surfaces of the lowermost slat, and the sliding contacts are electrically connected to the pressure-sensitive sensors, from both side ends of the lowermost slat. The narrow neck Forms the guide body is protruded, the safety device of the shutter door of the guide body and clamped the narrow neck portion is formed by inserting into the guide groove.