JP3011053U - Shutter curtain roll misalignment prevention structure - Google Patents

Abstract

(57) [Abstract] [Purpose] When the shutter curtain is wound around a winding drum, it is possible to prevent winding deviation of the shutter curtain in the width direction and to smoothly move the shutter curtain up and down. (EN) Provided is a structure for preventing the curtain from slipping. Constitution: When the shutter curtain 3 is wound around the winding drum 5, a protruding portion that abuts between the left and right ends 8, 8 of the slat body 2c forming the shutter curtain 3 between the upper and lower slats 2, 2. 9 and 9 are integrally formed so as to regulate the winding deviation of the shutter curtain 3 in the width direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shutter curtain winding deviation prevention structure capable of smoothly preventing the shutter curtain winding deviation in the width direction when the shutter curtain is wound around a take-up drum and smoothly performing the lifting operation of the shutter curtain. It is a thing.

[0002]

[Prior art]

 Conventionally, a shutter curtain in which a large number of slats are flexibly connected in the vertical direction is wound around a winding drum, and the shutter curtain is moved up and down by the forward and reverse rotation drive of the winding drum to open and close the building opening. Since the slats are vertically connected by forming interlock parts on the upper and lower edges in the longitudinal direction of the flat slat body, when the shutter curtain is wound around the take-up drum, the space between the upper and lower slats is increased. However, there is a drawback in that the winding is likely to be misaligned in the width direction of the shutter, and it is not possible to ensure a smooth shutter lifting operation by inducing a one-sided falling phenomenon when the shutter is lifted.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances to solve the conventional drawbacks, and its purpose is to prevent the winding misalignment in the repeated raising and lowering operations of the shutter curtain. Therefore, it is intended to provide a structure for preventing winding deviation of a shutter curtain, which is capable of effectively suppressing the movement and ensuring a smooth shutter driving state for a long period of time.

[0004]

[Means for Solving the Problems]

 In order to solve the problem, the technical means adopted by the present invention is to wind a shutter curtain around the peripheral surface of a winding drum, in which a large number of slats are flexibly connected in a vertical direction through interlock portions. When the shutter curtain is wound and rewound by the forward and reverse rotation drive of the take-up drum, the projections that come into contact with the upper and lower slats when wound on the take-up drum are provided at the left and right ends of the slat body. Each of them is integrally formed, and is configured to regulate winding deviation of the shutter curtain in the width direction.

[0005]

[Action]

 Therefore, according to the present invention, the positional regulation between the upper and lower slats in the wound state does not interfere with each other regardless of the positional relationship between the winding of the slats wound first and the winding of the slats wound later. It is possible to reliably carry out with the protruding portion, and it is possible to prevent winding deviation of the wound shutter curtain in the width direction.

[0006]

【Example】

 A configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a shutter installed in a building opening 1a, which is a shutter in which a large number of slats 2, 2 ... Are flexibly connected in a vertical direction via interlock portions 2a, 2b. The curtain 3 is wound around a winding drum 5 installed in a shutter case 4, and both ends of the shutter curtain 3 are guided by guide rails 6 and 6 by a forward / reverse rotation drive of an opening / closing device (not shown) to open / close the building opening 1a. Shutter 1 is configured to do so.

The shutter curtain 3 is connected to the peripheral surface of the winding drum 5 via a pair of suspending elements 7, 7 connected to the upper end of the shutter curtain 3 at a predetermined interval, and forms the shutter curtain 3. At both ends 8, 8 of each slat 2, 2, ..., Protruding parts 9, 9 having a convex cross-section from the front surface to the back surface are formed between the slat body 2c side formed by the flat portion and both end edges. Each one is composed.

That is, as shown in FIGS. 3A and 3B, the protrusions 9 and 9 are formed by bending a flat portion of the slurry body 2c to form a groove-shaped bottom portion 9a. When the shutter curtain 3 is wound around the winding drum 5, the bottom 9a of the slat 2 is interlocked with the interlocking portions 2a and 2b of the slats 2 and 2 which are vertically adjacent to each other in the stacking direction or the protruding portions 9 and 9. The bottom portion 9a of the shutter curtain 3 is abutted to prevent the shutter curtain 3 from winding in the width direction.

Since the present invention is configured as described above, when an opening / closing device (not shown) is rotationally driven in the rewinding direction in order to close the shutter curtain 3, the winding drum 5 rotates in accordance with the rotation. When the shutter curtain 3 is guided by the left and right guide rails 6 and descends, and its lower end comes into contact with the floor surface, the rotation drive of the switch is stopped by the operation of a stop switch (not shown), and the building opening 1a is opened. Will be closed.

Further, when the switch (not shown) is reversely rotated in the winding direction in the above closed state, the shutter curtain 3 is guided by the left and right guide rails 6 and ascends, and the shutter curtain 3 has the shutter case. The building opening portion 1a is opened by being successively wound around the winding drum 5 in 4.

The slats 2, 2 ... constituting the shutter curtain 3 are shown in FIGS. 4 (a) and 4 (b) during the raising and lowering operation of the shutter curtain 3 by the forward / reverse rotation of the winding drum 5. As described above, when the slat main body 2c of the slat 2 to be wound later is wound around the connecting position of the interlock portions 2a, 2b of the slat 2 wound first, the slat 2 is wound between the slats 2 and 2 concerned. The bottom 9a of the projecting portion 9 and the connecting portion of the interlock portions 2a and 2b come into contact with each other in a crimping manner to prevent slipping between the upper and lower slats 2 and 2 in the stacking direction, and prevent the shutter curtain 3 from being displaced in the width direction. To be prevented.

If the interlocking portions 2a, 2b of the slat 2 wound first and the slat 2 wound afterward are connected at substantially the same position, the slat 2 previously wound. The bottom portion 9a of the protruding portion 9 of the slat 2 which is wound later is brought into contact with the flat portion of the main body 2c of the slat 2, that is, the flat supporting portion located in front of and behind the protruding portion 9 of the slat 2 and sliding between the top and bottom As a result, the rolling of the shutter curtain 3 as a whole is prevented, and a smooth lifting and lowering operation of the shutter curtain 3 can be ensured. Further, at the place where the flat portions located before and after the protruding portion 9 of the slat 2 wound first and the bottom portion 9a of the protruding portion 9 of the slat 2 wound afterward do not contact, the upper and lower slat 2, A slip occurs between the two, but in this case, due to the generated slip, the bottom portion 9a of the protruding portion 9 of the slat 2 wound later is immediately crimped to the flat portion of the slat 2 wound earlier. Therefore, the influence of winding deviation on the entire shutter curtain 3 can be minimized. Therefore, it is possible to eliminate the one-sided phenomenon of the shutter curtain 3 due to the winding deviation and prevent the invasion of light, rainwater, dust and the like.

In this embodiment, the projections 9 are formed at both ends of all the slats 2, 2, ... Which constitute the shutter curtain 3, but the invention is not limited to this. The slats 2, 2, ..., Which are sequentially wound around the take-up drum 5, are either the upper or lower slats 2 in the stacking direction for each winding peripheral surface after the second turn except the first turn with respect to the take-up drum 5. As shown in FIG. 4 (a), the interlock parts 2 a and 2 b are connected to each other only when the slat main body 2 c of the slat 2 to be wound later is wound around the interlock parts 2 a and 2 b. The protrusions 9 may be formed at both ends of the slats 2.

[0014]

[Effect of device]

 In short, the present invention winds a shutter curtain, which is formed by connecting a large number of slats in a vertically bendable manner via interlocks, around the peripheral surface of the winding drum, and rotates the winding drum forward and backward. When the shutter curtain is wound and rewound by driving, the protrusions that come into contact with the upper and lower slats when wound on the winding drum are integrally formed on the left and right ends of the slat body, respectively, and the width of the shutter curtain is reduced. Since it is configured to regulate the winding deviation in the directional direction, regardless of the positional relationship between the winding of the slat wound first and the winding of the slat wound later in the repeated raising and lowering operations of the shutter curtain. The position of the upper and lower slats in the wound state can be reliably controlled by the protruding parts that interfere with each other, and the shutter curtain to be wound is misaligned in the width direction. In addition to being able to prevent this, the gap between the floor surface and the lower end of the shutter curtain when the building opening is closed can be eliminated, and the rain curtain of the shutter curtain can be improved. This is a very useful new effect that the smooth and reliable lifting and lowering operation of the shutter curtain can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is an overall front view of a shutter, a part of which is indicated by a chain line.

FIG. 2 is a perspective view of a main part showing a configuration of an end portion of a slat.

FIG. 3A is a side view of a main part of a slat. (B)
[Fig. 3] is a plan view of relevant parts.

FIG. 4A is a side view of essential parts showing a state in which a slat main body of a slat to be wound later is wound around a connecting position of an interlock portion of the slat that is wound first.
FIG. 3B is a front view of a partially omitted main part of the same.

[Explanation of symbols]

 2 slat 2a interlock part 2b interlock part 3 shutter curtain 5 winding drum 8 both ends 9 projecting part

Claims (1)

[Scope of utility model registration request] 1. A shutter curtain having a large number of slats connected flexibly in an up and down direction through interlock portions around a peripheral surface of a winding drum, and the shutter is driven by forward and reverse rotation of the winding drum. When winding and unwinding the curtain, the protrusions that come into contact with the upper and lower slats when wound on the winding drum are integrally formed at the left and right ends of the slat body, respectively, and the shutter curtain is misaligned in the width direction. A structure for preventing misalignment of the shutter curtain, which is configured to regulate