JP2546993Y2 - Safety devices for blind shutters - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention is capable of stopping the movement of the blind shutter as soon as there is an obstacle in any position of the seat plate at the time of closing operation of the electric blind shutter and stopping the operation of the blind shutter. The present invention relates to a safety device for a blind shutter that can eliminate the need for a battery.

[0002]

2. Description of the Related Art Conventionally, in an electric blind shutter, optical sensors are provided from the left and right sides at the lowest position, and the movement of the shutter curtain is stopped only when there is an obstacle that blocks the light sensor. Met. Further, there is a stop structure by a sensor circuit in the transmitter and the receiver.

[0003]

With such a system, the batteries dedicated to the sensors of the transmitter and the receiver operate only when the battery is always in a good charge state. In other words, in the case of a conventional safety device (with a tape switch and transmitter on the seat plate and a receiver above), the transmitter requires the dedicated battery, and the replacement of the dedicated battery is required relatively frequently. And this was annoying.

[0004]

The inventor of the present invention has proposed a device in which at least one of the movable levers in the longitudinal direction of the seat plate is provided with a pressing movable lever which can protrude to the side of the seat plate by contact with the seat plate. ,
A blind shutter, in which a tape switch provided at a position corresponding to the pressing movable lever and substantially the entire length of the lifting range of the seat plate can be operated by the pressing movable lever, and the closing operation of the blind shutter is appropriately stopped. When the electric blind shutter is closed, the seat plate can immediately detect that there is an obstacle at any position and stop the movement of the blind shutter. The object can be eliminated, and the object has been achieved by solving the above-mentioned problem.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

There are two types of embodiments of the present invention, as described below. The components other than the location A of the blind shutter in the first and second embodiments are common as shown in FIGS.

Therefore, first of all, from the first embodiment, as shown in FIG. 1 and the like, the blind shutter is composed of a large number of slats 1, 1,. A plate A is provided. The seat plate A
Is FIG. 2 (a), the 3 and the like, mainly, is composed of a seat plate body A ₁ and abutting the movable body A _2.

The seat plate body A ₁ is connected to other slats 1, 1.
The seat plate surface 2 has a substantially vertical cross section as shown in FIGS. 2 (a) and 3 and the like.
In this state, the seat plate A moves up and down.

As shown in FIGS. 3, 7 and the like, the seat plate side portion 3 is provided at both ends of the seat plate surface portion 2 of the seat plate body A ₁ in the longitudinal direction (same as the width direction of the blind shutter). , 3 is formed, the overall shape of the seat plate body a ₁ is configured in a substantially semi閉状made housing.

[0010] in the longitudinal direction of both ends of the seat plate body A _1, 3, 7, provided with a pressing movable lever 4, 4, outward from the longitudinal ends of the seat plate body A ₁ It rotates so as to protrude.

More specifically, the movable levers 4, 4 for pressing are provided.
Are often provided on the side portions 3 and 3 of the seat plate. As shown in FIGS. 3 and 5, the movable lever 4 includes a pressing piece 4a and an operating piece 4b.
And the pivot 4c.

The pivot 4c of the pressing piece 4a is
As shown in FIGS. 3 to 5, the movable lever 4 is provided rotatably on the inner side (within the seat plate main body A ₁ ) via a pivot bearing 3 a, as shown in FIGS. By rotating around the center, as shown in FIGS. 4, 5, and 7, the pressing piece 4a can move in and out of the seat plate side portion 3.

As shown in FIG. 3 and the like,
A through-hole 3b is formed so that the pressing piece 4a of the pressing movable lever 4 can be moved in and out.

At both ends in the longitudinal direction of the seat plate body A ₁ and inside thereof, slide arms 5 are mounted, and as shown in FIG.
₁ is configured to be movable within a certain range in the vertical direction.

[0015] Specifically, the slide arm 5, as shown in FIGS. 4 and 5, the seat plate side 3 of the seat plate body A ₁
Is mounted so as to be movable within a predetermined range by a guide portion 3c formed therein. As a specific configuration, a slide portion 5a having a through-hole shape is formed inside the slide arm 5, and a pin is provided. Guide part 3c is a slide part 5
a, and the seat plate side portion 3 supports the slide arm 5.

As shown in FIGS. 3 and 5, one end of an operation connection piece 6 is rotatably supported on the slide arm 5, and the other end of the operation connection piece 6 is used for pressing. A pivotal connection is made rotatably to the operating piece 4b of the movable lever 4.

As shown in FIG. 5, when the slide arm 5 moves upward with respect to the seat plate side portion 3 (seat plate body A ₁ ), the pressing piece 4a of the pressing movable lever 4 is seated. It becomes the structure which protrudes outward from the board side part 3. FIG.

[0018] The slide arm 5,5 mounted on each side of the seat plate body A _1, contact the movable body A ₂ is fixed. Abutting the movable body A _2, as shown in FIG. 7, the length in the longitudinal direction, has a seat plate body A ₁ and substantially the same length, through the slide arm 5 and 5, the seat plate body to a _1, a configuration capable of moving in the vertical direction in a certain range.

[0019] Specifically, as shown in FIG. 6 (a), that when abutting the movable body A ₂ is in the fully down position against the seat plate body A ₁ (bottom dead center position), the person the lower end of the contact movable body a ₂ protrudes downward from the lower end of the seat plate body a ₁ (amount of protrusion H), when the seat plate a is brought into contact with some object during descent, as shown in FIG. 6 (b) can contact the movable body a ₂ moves relative to the seat plate body a _1, a configuration in which contact the movable body a ₂ is retracted in the seat plate body a ₁ is actually (seat plate body a ₁ protruding amount of the contact movable body a ₂ from the lower end h
H> h).

Then, the contact movable body A ₂ is the seat plate body A
When ascending with respect to ₁ , the pressing movable lever 4 is rotated via the slide arm 5 and the operation connecting piece 6,
The pressing piece 4 a is configured to protrude outward from the through hole 3 b of the seat plate side portion 3.

The seat plate A is supported and fixed on a support plate 8 provided in the guide rail 7, and as shown in FIGS. 2 (b) and 4, a guide rail 9 is connected to the support plate 8 by a chain 9. It goes up and down along 7.

Specifically, as shown in FIGS. 3 to 5,
The support rods 3d, 3 extend outward from the seat plate side portions 3, 3 of the seat plate A.
The support rods 3d, 3d are supported by a seat plate support portion 8a formed on the support plate 8, and the seat plate A is moved up and down by the support plate 8 and the chain 9.

The guide rail 7 has a tape switch 10
However, as shown in FIG. 2A and FIG.
a. The tape switch 10
As shown in FIG. 9 (b), a pair of conductive contacts 10a, 10a are installed facing each other inside a hollow portion of a tubular body 10a made of an elastic synthetic resin or rubber or the like. I have.

The tape switch 10 is fixed along the vertical direction of the guide rail 7 so that the pressing piece 4a of the pressing movable lever 4 mounted on the seat plate A is at a position where it can be brought into contact. At any height position of the guide rail 7, the pressing piece 4a of the pressing movable lever 4 presses the tape switch 10, and the internal conductive contacts 10a, 10a
Can be brought into contact.

Next, a second embodiment of the present invention will be described.

First, also in the second embodiment, the seat plate A
It is constituted by an abutment movable member A ₂ of the upper seat plate body A ₁ and the lower side, a configuration which rises Anyway against abutment movable member A ₂ only the seat plate body A ₁ at a predetermined range Has become.

The movable lever 4 for pressing is supported by a support plate 8 as shown in FIG.
Specifically, a seat plate support portion 8a formed on the support plate 8 (supports and fixes the support rod 3d of the seat plate A from the lower surface).
At the tip of the bearing block 11.

The bearing block 11 is fixed to a tip end of the seat plate support portion 8a, and the support rod 3d of the seat plate A is placed on the seat plate support portion 8a via the bearing block 11 and the movable lever 4 for pressing. Is what is done.

The support rod 3d of the seat plate A in the second embodiment.
Is the seat support part of the contact movable body A ₂ side is mounted on, and the support plate 8 8a is swollen portion specifically formed to project in a trapezoidal shape in which the top surface is formed in an inclined shape 8c is present at the tip. Further, a hole-shaped engaging portion 8b having an appropriate height in the vertical direction is formed adjacent to a position above the seat plate supporting portion 8a at a tip end portion of the bulging portion 8c.

As shown in FIG. 8, guide protrusions 8d, 8d are formed on both sides of the inclined top surface of the trapezoidal bulging portion 8c, and the lower part of the guide protrusions 8d, 8d is a seat plate. It gradually narrows as it reaches the support portion 8a.

As shown in FIG. 8, the bearing block 11 has a pair of supporting projections 11a, 11a formed on the upper surface thereof at appropriate intervals, and a movable lever for pressing between the supporting projections 11a, 11a. The four pivots 4c are pivotally supported, and the pressing movable lever 4 is rotatable.

Further, as shown in FIGS. 11 (a) and 11 (b), the pressing lever 4a of the pressing lever 4 is urged by an elastic body 12 such as a spring, so that the pressing lever 4 moves outward from the bearing block 11. It has a configuration that pops out.

The seat plate support portion 8a of the support plate 8
The supporting rods 3d of the seat plate A placed on the supporting plate 3 simultaneously press the operating piece 4b of the movable lever 4 for pressing from above, and as shown in FIG. When the pressing lever 4 is released from the plate supporting portion 8a, the operating piece 4b of the pressing movable lever 4 is released, and the pressing movable lever 4 is
And the pressing piece 4a is protruded outward by the elastic body 12 by rotating about the center.

FIGS. 9A and 10B show the guide rail 7.
As shown in FIG. 2, the tape switch 10 is provided at a position where the pressing piece 4a of the pressing movable lever 4 projects. In the embodiment shown in FIG. 9A, the tape switch 10 is installed at the rail hole 7 of the guide rail 7.
a.

As described above, in the second embodiment of the present invention,
The movable lever 4 for pressing does not exist on the seat plate A side, but is mounted on the support plate 8 side.

Firstly, at the time of drop of the seat plate A, when the contact movable body A ₂ is in contact with some object, where substantially instantaneously contact the movable body A ₂ are relative to the seat plate body A ₁ It is in a state of rising.

[0037] At instantaneous increase state of the seat plate body A _1, by support bars 3d than the seat support part 8a of the support plate 8 in the descent is out rises, the pressing movable lever 4 is simultaneously times Then, the pressing piece 4a comes into contact with the tape switch 10 provided in the vicinity, and a stop switch (not shown) is operated to open the drive circuit of the blind shutter, stop the drive source (switch), and close the blind shutter. Operation will be stopped.

Numeral 13 in FIG. 10 (a) denotes a sliding locking rod, which is structured so that it can enter and exit from the seat plate side portions 3, 3 at both ends in the longitudinal direction of the seat plate A. It can be locked to the locking portion 8b of the plate 8.

When the blind shutter is opened in an emergency, the sliding locking rod 13 is moved by the locking portion 8b by a predetermined operation.
When the sliding shutter 13 is disengaged from the engaging portion 8b of the support plate 8, the swelling portion 8 is forcibly opened.
By moving along the guide projections 8d, 8d formed on the guide c, the guide projections 8d can be easily locked by the locking portion 8b and returned.

Further, in the figure, reference numerals 14 and 15 denote an outer link portion and an inner link portion, respectively.
Are supported and fixed, and adjust the inclination angles of the slats 1, 1,....

The seat plate body A ₁ of the seat plate A is provided with a seat plate support 16, which is rotatably connected to the outer link 14 and the inner link 15.

[0042]

According to the present invention, the pressing movable lever 4 that can protrude to the side of the seat plate A when the seat plate A comes into contact with the seat plate A is used.
The tape switch 10 provided at at least one in the longitudinal direction of the movable shutter 4 and provided at a position corresponding to the movable lever 4 for pressing and substantially the entire length of the elevation range of the seat plate A can be operated by the movable lever 4 for pressing, and the blind shutter The safety device in the blind shutter is configured to appropriately stop the closing operation of the blind shutter. First, at the time of the closing operation of the blind shutter, regardless of the position of the seat plate A within the full opening, Secondly, the closing operation can be stopped, secondly, a battery dedicated to the sensor can be eliminated, and thirdly, the use of the tape switch 10 eliminates the need for providing a plurality of switches, so that a simple configuration can be achieved. It is.

These effects will be described in detail. When the blind shutter is closed, it comes into contact with some object so as to prevent the lowering of the seat plate A, thereby acting on the tape switch 10 by rotating the movable lever 4 for pressing. Accordingly, the operation of the blind shutter can be immediately stopped at any height position of the seat plate A.

That is, since the closing operation of the blind shutter is stopped by the action on the tape switch 10 due to the contact (including a collision or the like) of the seat plate A to the object, the height position of the seat plate A when the seat plate A descends Has nothing to do with it and is not subject to any restrictions such as height.

In the above point, according to the conventional phototube, the closing operation cannot be stopped unless the light emitted at the installation position is blocked, and the phototube is moved at least two times in the height direction. If it is not provided in more than the places, sufficient safety cannot be ensured, and the present invention is much superior to the fact that the construction is troublesome and the construction cost increases.

In the case of a conventional safety device (a sensor circuit device in which a tape switch and a transmitter are provided on a seat plate and a receiver is provided above), a battery dedicated to the sensor is required, and the battery dedicated to the sensor is relatively frequently used. The replacement of the sensor was troublesome, but in the present invention, a battery dedicated to the sensor is not required, and there is an advantage that not only the trouble is eliminated but also energy saving measures can be taken.

Further, since the tape switch 10 is used, and the movable lever 4 for pressing is rotated by the contact of the seat plate A with the object to act on the tape switch 10, the pressing is performed. The rotation of the movable lever 4 can have a complete mechanical structure, and since no electrical connection point is required in the seat plate A, durability and reliability can be ensured.

When the movable levers 4 and 4 for pressing are provided in the seat plate A according to the first embodiment and the tape switch 10 is fixed to the outer surface of the guide rail 7, the tape switch 10 is exposed to the outside. Then, since the tape switch 10 can be immediately pressed and actuated manually, the closing operation of the blind shutter can be stopped without the seat plate A coming into contact with the object.

Further, as shown in the second embodiment, if the movable lever 4 for pressing is provided on the support plate 8 side in the guide rail 7, vibrations of the seat plate A are transmitted to the movable lever 4 for pressing. And it can be durable.

[Brief description of the drawings]

1A is a perspective view of a blind shutter provided with the present invention, and FIG. 1B is a cross-sectional view of the blind shutter provided with the present invention.

FIGS. 2A and 2B are enlarged cross-sectional views of a main part of a blind shutter provided with the present invention.

FIG. 3 is a perspective view of a main part of the first embodiment of the present invention.

FIG. 4 is an enlarged plan view of a main part of the first embodiment of the present invention.

FIG. 5 is an enlarged front view of a main part of the first embodiment of the present invention.

6A is a cross-sectional view of the seat plate in a normal state according to the first embodiment of the present invention. FIG. 6B is a cross-sectional view of the seat plate according to the first embodiment of the present invention, in which the contact movable body is slightly raised.

FIG. 7 is a schematic front view of the first embodiment of the present invention.

FIG. 8 is a perspective view of a main part of a second embodiment of the present invention.

FIG. 9A is an enlarged plan view of a main part of the second embodiment of the present invention, and FIG.

FIG. 10A is a front sectional view of a main part of a second embodiment of the present invention. FIG. 10B is a sectional view of a seat plate of the second embodiment of the present invention.

11A is a cross-sectional view of a second embodiment of the present invention in a normal state, and FIG. 11B is a cross-sectional view of an operation state of the second embodiment of the present invention.

[Explanation of symbols]

 A: seat plate 4: movable lever for pressing 10: tape switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A pressing movable lever which can protrude to the side of a seat plate by being in contact with the seat plate is provided on at least one of the longitudinal directions of the seat plate. A safety device for a blind shutter, characterized in that a tape switch provided on substantially the entire length of a vertical range of the plate can be operated by a movable lever for pressing, and a closing operation of the blind shutter is appropriately stopped.