JP3653864B2 - Shutter winder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a winding device for a spring shutter for a building, which is manually or electrically used, using a stored energy by a winding spring.
[0002]
[Prior art]
In general, in a shutter winding device, in particular, in a spring shutter winding device that balances the operation of winding or rewinding the shutter by the accumulating force of the winding spring, the shutter opening is wide and the curtain width is wide. When is large, the load applied to the fixed shaft is large, and the fixed shaft may be bent. In particular, when the hoisting drum is composed of a plurality of hoisting wheels loosely fitted on the fixed shaft and an auxiliary bar that spans and connects the hoisting wheels, it is structurally sufficient for bending. However, there is a phenomenon that the load on the center portion of the fixed shaft is excessive and the center portion is bent and shakes when the curtain is opened and closed.
[Problems to be solved by the invention]
[0003]
For this reason, from the above-mentioned bending of the fixed shaft, when the curtain is wound up and rewound, the opening and closing of the curtain is not smooth, and the sound of the slats constituting the curtain is generated, or the friction resistance is unstablely increased or decreased, The winding spring is unbalanced, the curtain is twisted, and inconveniences such as single flow occur between the slats.
[0004]
The present invention has been made on the basis of the above circumstances, is easy to mount, has effective rigidity against the bending of the fixed shaft, avoids the sound of slats, and has a good winding spring. An object of the present invention is to provide a spring shutter winding device that maintains a good balance and eliminates problems such as curtain twisting and slat flow.
[0005]
[Means for Solving the Problems]
For this reason, in the present invention, the winding drum 1 is loosely fitted to the fixed shaft 2 and is connected to the fixed shaft 2 via the winding spring 3 as shown in the illustrated embodiment. The drum 1 is a so-called spring shutter winding device formed by a plurality of hoisting wheels 5A, 5B,... Loosely fitted on the fixed shaft 2 and auxiliary bars 6 that connect the hoisting wheels 5A, 5B. , The reinforcing body 7 mounted in a cylindrical shape along the outer periphery of the winding wheels 5A, 5B... Is mounted on the outer periphery of at least the intermediate portion of the winding drum 1.
[0006]
In this case, the reinforcing body 7 can be constituted by a cylindrical body having a substantially cylindrical shape, a substantially rectangular tube shape, or a substantially C-shaped cross section having a split groove continuous along the axial direction. The substantially rectangular tube shape may be a polygonal shape such as a triangle to a decagon. Moreover, you may comprise by the plate-shaped body wound in such a shape, or you may comprise by the combination combination of a several division body.
[0007]
In addition, a fitting groove 8 is formed in a recessed shape at one or a plurality of locations on the outer periphery of the winding wheels 5A, 5B... that form a protrusion 7A extending in a direction. Thus, at least the position of the fitting groove 8 of the hoisting wheel 5A, 5B... Of the hoisting drum 1 where the reinforcing body 7 is extrapolated is made to coincide with the axial direction, and the reinforcing body 7 is extrapolated to the hoisting drum 1. When mounting, the protrusion 7A is inserted and fitted into the fitting groove 8. In addition, one portion of the outer surface of the reinforcing body 7 can be formed thick so as to be a coupling fixing portion 7B that is a suspension base of the base end portion of the shutter curtain 4.
[0008]
As a result, effective rigidity with respect to the bending of the fixed shaft 4 is provided, the sound of the slats is avoided, the good balance of the winding springs 3 is maintained, and inconveniences such as twisting of the curtain 4 and one-way flow of the slats. Can be eliminated. Further, the reinforcing body 7 can be easily assembled by extrapolating and fixing the existing winding drum 1 or the winding drum 1 provided with the fitting groove 8 on the outer periphery of the winding wheels 5A, 5B. Can be manufactured.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As shown in the figure, the shutter winding device of the present invention basically has a winding drum 1 loosely fitted to a fixed shaft 2 and connected to the fixed shaft 2 via a winding spring 3. The energizing force of the hoisting spring 3 is used to assist the hoisting of the curtain 4 and to balance the energizing during the hoisting and unwinding. In particular, in the present invention, the winding drum 1 includes a plurality of, for example, four winding wheels 5A, 5B, 5C, and 5D that are rotatably fitted to the fixed shaft 2 and a space between these winding wheels. And an auxiliary bar 6 that connects the hoisting wheels and is located on the body around which the curtain 4 is wound, for example, between the hoisting wheels 5B and 5C, along the outer periphery of these hoisting wheels, A reinforcing body 7 mounted in a cylindrical shape is mounted.
[0010]
In this embodiment, as shown in FIG. 8, the reinforcing body 7 is substantially cylindrical and is formed by extrusion molding of a metal such as aluminum. On the inner side surface of the reinforcing body 7, a protrusion 7 </ b> A that passes through in the longitudinal direction is integrally formed. The ridges 7A are formed by a set of two parallel ridges, and for example, four sets are formed at intervals of 90 degrees. One portion of the outer surface of the reinforcing body 7 is formed thick and serves as a coupling fixing portion 7 </ b> B that hangs from the base end portion of the curtain 4. In addition, the reinforcing body 7 may be a cylindrical body having a polygonal cross section such as a triangle or a quadrangle to a decagon if necessary. Alternatively, a combination of a plurality of divided bodies, for example, two divided bodies having a semicircular arc cross section may be combined.
[0011]
Further, as shown in FIG. 7, each winding wheel 5 </ b> A (B, C, D) has a cylindrical boss portion 14 and a flange portion 15 formed integrally and concentrically on the inner and outer circumferences of the disc portion 13. On the outer periphery, a plurality of, for example, four fitting grooves 8 into which the respective protrusions 7A are fitted and inserted at equal intervals in the circumferential direction are formed in a recessed shape. Further, an insertion hole 16 through which the auxiliary bar 6 is inserted and engaged is formed in the outer peripheral portion of the disk portion 13 along the inner peripheral surface of the flange portion 15.
[0012]
In a state where the reinforcing body 7 is extrapolated to the winding drum 1, the protrusion 7 </ b> A is inserted and fitted into the fitting groove 8 of the winding wheel, whereby the reinforcing body 7 is made up of the winding wheel (in this embodiment, The hoisting wheels 5B and 5C) are engaged. Reference numeral 17 denotes a coupling tool such as a rivet that couples the reinforcing body 7 and the winding wheel.
[0013]
In the figure, reference numeral 9 denotes a fixing tool made of a fixing screw for connecting one end of the winding spring 3 to the fixed shaft 2, and reference numeral 10 similarly denotes the other end of the winding spring 3 to the winding wheel 5B (5C). It is a fixing tool made of connecting fixing screws. Reference numeral 11 denotes a locking tool made of a split pin for preventing the winding wheels 5B and 5C from moving in the longitudinal direction of the fixed shaft 2, and is attached through the fixed shaft 2. A slip washer 12 is interposed between the take-up wheel 5B (5C) and the locking tool 11.
[0014]
In such a configuration, the load of the curtain 4 is received by the fixed shaft 2 via the winding drum 1 when the shutter is opened and closed by utilizing the stored force of the shutter winding springs 3 and 3. The fixed shaft 2 is reinforced substantially concentrically by the reinforcing body 7 and suppresses the flexure of the fixed shaft 2, thereby avoiding the noise of the slats, maintaining a good balance of the winding spring 3, and the curtain 4. Inconveniences such as twist and slat flow can be eliminated.
[0015]
In this embodiment, the reinforcing body 7 is mounted only between the winding wheels 5B and 5C. However, for the sake of strength and design, the entire area where the curtain 4 is rolled, that is, the winding wheels 5A to 5D. Of course, it may be mounted between.
[0016]
【The invention's effect】
The present invention has been described in detail above, and a winding drum formed by a plurality of winding wheels rotatably fitted on a fixed shaft and an auxiliary bar linking each winding wheel is connected to the above-described winding drum via a winding spring. In the so-called spring shutter winding device connected to the fixed shaft, the outer periphery of at least the intermediate portion of the winding drum is mounted with a reinforcing body mounted in a cylindrical shape along the outer periphery of the winding wheel. Concentric effective stiffness against bending of the fixed shaft, avoiding slat noise, maintaining good balance of winding springs, eliminating problems such as curtain twisting and slat single flow it can.
Further, the reinforcing body is attached by extrapolating it to the winding drum, and its mounting and assembly are easy.
[0017]
Furthermore, a protrusion continuous in the longitudinal direction is formed at one or a plurality of positions on the side surface of the reinforcing body formed by the cylindrical body, and the protrusion is formed on the outer surface corresponding to the protrusion of the winding wheel on which the reinforcing body is extrapolated. By forming a fitting groove into which the reinforcement is inserted, the reinforcement body and the hoisting wheel are integrated in the outer circumferential direction, and the reinforcement of the hoisting wheel and the fixed shaft by the reinforcement body is further ensured, and in particular, the torsional deformation in the outer circumferential direction is effective. Can be absorbed.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a winding device according to an embodiment of the present invention.
FIG. 2 is also a plan view of the main part.
FIG. 3 is a front view of the main part of the same.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is a cross-sectional view taken along the line BB.
FIG. 6 is an enlarged cross-sectional view taken along the line CC.
FIG. 7 is a front view (A) and a side sectional view (B) of the winding drum, similarly.
FIG. 8 is also an end view of the reinforcing body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Winding drum 2 Fixed shaft 3 Winding spring 4 Curtain 5A, 5B, 5C, 5D Winding wheel 6 Auxiliary bar 7 Reinforcement body 7A Projection 8 Fitting groove 9, 10 Fixing tool 11 Locking tool 12 Washer 13 Disk part 14 Boss part 15 Flange part 16 Insertion hole 17 Joiner

Claims (3)

The winding drum is loosely fitted to the fixed shaft, and is connected to the fixed shaft via a winding spring. The winding drum includes a plurality of winding wheels that are freely loosely fitted to the fixed shaft, and each winding wheel. In the shutter winding device formed by the associated auxiliary bar, a reinforcing body mounted in a cylindrical shape along the outer periphery of the winding wheel is mounted on the outer periphery of at least the intermediate portion of the winding drum, and the winding is performed A fitting groove is formed on the outer periphery of the wheel, and a protrusion extending in the longitudinal direction is formed on the inner surface of the reinforcing body, and the protrusion is fitted into the fitting groove. A shutter winding device , wherein the reinforcing member is engaged with the winding wheel .   2. The reinforcing body according to claim 1, wherein the reinforcing body is formed of a cylindrical body having a substantially cylindrical shape, a substantially rectangular tube shape, or a substantially C-shaped cross section having a split groove continuous along the axial direction. The shutter winding device according to the description. 3. The shutter wind-up according to claim 1 , wherein one portion of the outer surface of the reinforcing body is formed to be thick and serves as a connecting and fixing portion of a suspension base of the shutter curtain base end portion . apparatus.

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