JP2601693Y2 - Slat curtain bias prevention structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a structure for preventing a slat curtain from being biased in a shutter used for a ventilation port, a lighting window and the like.

[0002]

2. Description of the Related Art In general, in a slat curtain winding mechanism of a shutter of this type, as shown in FIG.
Winding cage 21 for winding slat curtain 20
And is rotated forward and reverse by driving the motor 22,
The slat curtain 20 is wound or unwound, and a pair of left and right take-up reels 24, 24 are rotatably supported on a support shaft 23 arranged in parallel with the take-up cage 21, so that both windings are performed. The reel is urged in one rotation direction by a torsion coil spring 25 interposed between these and the spindle.
Hanging ropes 26, 26 wound on take-up reels 24, 24
Is connected to a pulley 2 disposed above the shutter opening.
Using guide means such as 7 and 27, the slat curtain 20 is connected to the upper edge of the slat curtain 20 by making a U-turn and guiding it downward.

[0003]

However, in such a configuration, each of the hanging cables 26, 26 is wound by the winding reels 24, 24, respectively.
There is a problem that a difference in winding diameter occurs when winding 26 is performed. Then, the difference in the winding diameter causes a problem that the slat curtain 20 is in a one-sided state.

[0004] Therefore, when the slat curtain 20 is raised and lowered, the side edges of the slat curtain 20 come into contact with the inner surfaces of the guide rails with respect to the left and right guide rails (not shown), thereby generating noise. The problem of getting lost occurs. Further, from this, the slat curtain 20 may not be evenly wound on the winding cage 21 in the left and right direction, which may cause a bias.

In view of the above, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a structure for preventing the slat curtain from unwinding and unwinding from the winding cage without bias. I have.

[0006]

Next, means for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The bias prevention structure of the slat curtain according to the present invention has a slat curtain 2 along the left and right guide rails.
In the slat curtain winding mechanism in which the slat curtain is wound on the winding cage 1, towing lines 7, 7 are respectively connected to both sides of the slat curtain 2 and these towing lines are connected. 7 and 7 are wound around the take-up reel 6 via the respective pulleys 9 and 9, and at least one of the corresponding pulleys has a multi-stage winding portion 9A composed of winding portions having different diameters. It is characterized by doing.

The tow lines 7, 7 are connected to a common line whose both ends are connected to both side portions of the slat curtain 2, and are connected to a required portion between the common lines, and are wound around the take-up reel. The winding line 8 may be used.

[0008]

Therefore, the right and left lengths of the towing lines 7 connected to the slat curtain 2 can be adjusted by the corresponding pulleys 9,
At the time of winding around the tow 9, at least one corresponding pulley can be easily implemented by selectively winding the towing line on the other-stage winding portion 9 </ b> A. For this reason, winding and rewinding of the slat curtain with respect to the take-up reel can be performed evenly on the left and right sides, and noise on the left and right guide rails can be avoided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the illustrated pull-up shutter device. The shutter device of the present invention shown in FIG. 1 is provided with a winding cage 1 (shown by a dotted line in the figure) below a shutter opening (not shown), and the upper edge of the slat curtain 2 is provided with a required shape. The suspension mechanism 3 is configured to be suspended upward.

A slat curtain suspension mechanism 3 includes an output shaft 4 of an electric motor 4 for driving the shutter winding cage 1.
A, a take-up reel 6 connected via a pair of slip type torque absorbers 51 and 52 in opposite directions to each other, and a pair of tow ropes having one end connected to both sides of the upper edge of the slat curtain 2. The holding ropes 7, 7; a winding rope 8 connected to the other ends of the hanging ropes 7, 7; and a take-up reel disposed on a skirting board or the like constituting a shutter opening. 6 is provided with corresponding pulleys 9, 9 for guiding the slat curtain 2 to the take-up cage 1 and rewinding the slat curtain 2 by the forward / reverse drive of the motor 4, and the winding rope 8 to the take-up reel 6. Winding and rewinding are performed.

The pulley 9 corresponding to one of the hanging ropes 7 has a multi-stage winding portion 9A in which winding portions having different diameters are formed concentrically in multiple layers. Can be selectively wound around the hanging portion.

In this embodiment, the hanging ropes 7, 7 are constituted by a single common rope, and both ends thereof are slat curtain 2
, And a required portion in the middle is formed in a loop shape, and one end of the winding line 8 is connected thereto.

More specifically, guide rails (not shown) for guiding the slat curtain 2 are arranged on both sides of the shutter opening, and a shutter housing for housing the winding cage 1 is provided. A pair of support brackets 11A and 11B are provided at both ends thereof. In this embodiment, the motor 4 is mounted on the winding cage 1 with the base of the main body fixed to one support bracket 11A.
It is arranged in. The winding cage 1 is connected to an output shaft 4A of a motor 4. Further, the winding diameter of the winding reel 6 is set and formed so as to be larger than the outermost diameter when the slat curtain 2 is wound around the winding cage 1.

The pair of torque absorbers 51 and 52 have the same configuration, and have a structure for absorbing energy due to rolling friction, that is, a rotational force. One torque absorber 51 is connected to the output shaft 4 A of the motor 4. The motor 4 is connected coaxially and connected to the take-up reel 6.
The transmission is performed with a predetermined torque in one of the rotation directions, and the rotation is free in a reverse rotation direction.
Is in a free state in a direction in which the rotation is transmitted from the output shaft 4A of the motor 4 to the take-up cage 1, and is supported by the other support bracket 11B in the reverse direction to apply a predetermined torque to the take-up reel 6. It has a configuration.

In such a configuration, the slat curtain 2
When the motor 4 is driven, that is, when the slat curtain 2 descends and is wound around the winding cage 1 by the drive of the motor 4, one of the torque absorbers 5 is rotated in the rotation direction of the output shaft 4A.
Reference numeral 1 denotes a freely rotatable free state in which the rotation of the output shaft 4A is not transmitted to the take-up reel 6, while applying a traction force to the take-up reel 6 via the hanging ropes 7, 7 and the take-up rope 8. At this time, the take-up reel 6 rewinds (feeds out) the take-up line 8 without loosening while receiving a slip resistance while receiving a predetermined torque by the function of the other torque absorber 52 on the support bracket 11B side. Can be rotated.

When the slat curtain 2 is closed,
That is, when the slat curtain 2 rises and is unwound from the winding cage 1 by the rotation of the motor 4 (arrow S in FIG. 1), the rotation of the output shaft 4A is controlled by the rotation of the output shaft 4A. It is transmitted to the take-up reel 6 via one torque absorber 51 coaxially connected to 4A. In this case, the difference between the unwinding amount of the slat curtain 2 and the winding amount of the winding line 8 around the winding reel 6 is automatically canceled by the slip in the one torque absorber 51. That is, while applying a fixed amount of torque to the take-up reel 6 by the one torque absorber 51, the number of revolutions of the take-up reel 6 is made smaller than the number of revolutions of the motor 4, and the slat curtain 2 is taken up by the rewinding amount. The cable 8 is wound around the winding reel 6.
Then, due to the generation of a predetermined torque due to the slip, the winding line 8 and the hanging line 7 are kept in tension. At this time, the torque absorber 52 on the support bracket 11B side is in a free state.

In this case, the slat curtain 2 takes up the common take-up line 8 on one take-up reel 6, or
Since the slat curtain 2 is rewound, the slat curtain 2 is always pulled to the left and right evenly by the hanging ropes 7, and there is no possibility of dropping.

At the time of or after the construction, if the left and right balance of lifting of the slat curtain 2 by the hanging cables 7, 7 is poor, that is, if the lifting state is uneven and one-sided down occurs, the corresponding pulley 9 is used. This can be easily corrected by selecting the hanging of the hanging cable 7 around the other-stage hanging portion 9A.

As a result, the winding and rewinding of the slat curtain 2 with respect to the winding cage 1 can be carried out evenly without bias, and when the slat curtain 2 is moved up and down, no contact occurs on the guide rails and noise can be avoided. .

In the above-described embodiment, one corresponding pulley of each corresponding pulley 9 is provided with the other-stage winding portion 9A. However, the other corresponding pulley 9 is formed with a winding portion having a different diameter on both corresponding pulleys. It may be a winding portion. In this case as well, the right and left balance in the suspended state of the slat curtain 2 can be easily corrected by selecting the hanging of the hanging cable 7 around each pulley.

Further, the bias preventing structure of the present invention can be applied to, for example, a pull-up type shutter device as shown in FIG. In the pull-up shutter device of this embodiment, a take-up cage 101 for taking up the slat curtain 100 is pivotally supported in a shutter storage portion arranged below the shutter opening, and the take-up cage 101 is correctly driven by a motor 102. Reverse rotation, take up the slat curtain 100,
Alternatively, while performing rewinding, one take-up reel 104 is rotatably supported on one side of a spindle 103 arranged in parallel with the take-up cage 101, and the take-up reel 104 is Torsion coil spring 10 interposed between
At 5, it is urged in one rotation direction.

The take-up line 106 wound around the take-up reel 104 is connected to the suspension lines (tow lines) 107, 107 similar to the above-described embodiment, and is arranged above the shutter opening. Double row pulley 109 as pulley
And the pulleys 110 are respectively wound around the hanging cables 107 and 107 and connected to the left and right ends of the upper edge of the slat curtain 100. The pulley 110 is provided with a multi-stage winding portion 110A constituted by winding portions having different diameters, and the hanging cable 107 is selectively wound therearound.

Also in this case, as in the above-described embodiment, the slat curtain 100 winds or unwinds the common winding line 106 with one winding reel 104, so that the hanging lines 107, The traction by the 107 is always equal to the left and right, and there is no possibility that the slat curtain 100 will fall down. The unbalance between the left and right hanging cables 107, 107 is determined by adjusting the hanging cables 107 with respect to the
Can be eliminated by selective winding. As a result, the slat curtain 100 with respect to the winding cage 101
The winding and rewinding of the slat curtain 100 can be performed evenly without bias, and when the slat curtain 100 is moved up and down, no contact occurs on the guide rails, and noise can be avoided.

FIGS. 3 and 4 show embodiments in which the bias preventing structure of the present invention is applied to a conventional pull-up shutter device. The difference from the embodiment of FIG. 2 described above is that in these embodiments, a pair of take-up reels 104, 104 linked to each other are urged in one direction by a torsion coil spring 105 on both sides of a support shaft 103. In this state, the towing lines 107, 107 are guided downward by U-turns via the corresponding pulleys 109, 110, and are directly wound around the winding reels 109, 110, respectively.
Both sides of the upper edge of the slat curtain 100 are lifted and held.

In this case, in the embodiment of FIG. 3, one of the corresponding pulleys 109 is provided with a multi-stage winding portion 109A having a different diameter, and in the embodiment of FIG.
09, 110 are multi-stage winding portions 109A, 11 having different diameters.
0A. The winding portions 109A, 109A,
As described above, the function of 110A is to balance left and right of the towing line, and the same effect as in the above-described embodiment can be obtained.

Further, in each of the embodiments described above, the example in which the shape of the slat curtain 2, 100 is formed in a rectangular shape is described. However, the shape of the slat curtain is formed such that the upper edge is formed obliquely as shown in FIG. The slat curtain 2 'having a triangular shape and a pull-up shutter device having a circular slat curtain (not shown) having a curved upper edge can also be provided with the bias preventing structure of the present invention. . In this case, in the triangular slat curtain 2 'shown in FIG. 5, the towing line (hanging line) at the time of construction occurs because the slat curtain 2' itself is not balanced in the right and left directions.
Since the winding adjustment of 7 can be performed even after the installation at the other-stage winding section 9A, the installation time can be reduced, and the slat curtain 2 ′ for the winding cage 1 can be reduced as in the above-described embodiments. When the slat curtain 2 'is moved up and down, contact with the guide rail and noise can be avoided.

[0027]

[Effects of the Invention] As described above, the bias preventing structure of the slat curtain according to the present invention allows the tow line to be wound by one take-up reel, and at the same time, the free end side both sides of the slat curtain to be wound by the tow line. In addition to pulling the left and right towing lines through each corresponding pulley, at least one of the corresponding pulleys is a multi-stage winding portion composed of winding portions having different diameters so that the winding of the towing line is selected. With the configuration, when the slat curtain is biased, there is an effect that the adjustment can be easily performed by selecting the winding of the multi-stage winding portion.

For this reason, the winding and rewinding of the slat curtain with respect to the winding cage can be performed evenly to the left and right without bias, and the inner surfaces of the left and right guide rails do not come into contact with each other. Practical effect that it can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a slat curtain provided with an embodiment of a bias prevention structure according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the present invention.

FIG. 3 is a perspective view showing still another embodiment.

FIG. 4 is a perspective view of another embodiment of the present invention.

FIG. 5 is a perspective view of another embodiment of the present invention.

FIG. 6 is a perspective view of a conventional example.

[Explanation of symbols]

 1, 101 ... winding cage 2, 2 ', 100 ... slat curtain 6, 104 ... winding reel 7, 107 ... towing line (common line, hanging line) 8, 106 ... winding line 9, 109, 110 ... Corresponding pulley 9A, 109A. 110A ... other stage winding part

Claims (2)

(57) [Scope of request for utility model registration] 1. A slat curtain winding mechanism in which a slat curtain is wound around a winding cage along left and right guide rails. Each of the tow lines is connected, and these tow lines are wound around a take-up reel via respective corresponding pulleys, and at least one of the corresponding pulleys is a multi-stage winding portion composed of winding portions having different diameters. A slat curtain bias prevention structure comprising: 2. The tow line includes a common line having both ends connected to both sides of a slat curtain, and a winding line connected to a required portion between the common lines and wound around the winding reel. The slat curtain bias preventing structure according to claim 1, wherein