JPH0614399U - Shutter winding shaft structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The weight of the winding shaft for winding the shutter slat is made light. [Structure] Both ends are rotatably supported, are connected to a drive source M, and are rotationally driven, and a rotary shaft 2 is rotatably driven. A plurality of foils 7 are provided, and the upper edges of the shutter slats S are connected and fixed to the outer peripheral edge of each of the foils 7. And a connecting rod 8 for connecting
A shutter slat S of a shutter that closes the opening of the building is wound around the outer periphery of each foil 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a winding shaft that winds a curtain slat of an electric shutter such as a heavy shutter provided in an opening of a building.

[0002]

[Prior art]

 In electric shutters such as heavy shutters provided in the opening of a building, a winding shaft is provided in a shutter case provided at the upper edge of the opening. Conventionally, the structure of the take-up shaft is formed in the shape of a hollow pipe, and has a protruding shaft neck provided at one end in the longitudinal direction and a recess for fitting with a sprocket boss at the other end.

The winding shaft is rotatably mounted with its both ends supported by a pair of left and right bearings provided on each bracket constituting both sides of the shutter case. Then, the upper edge of the shutter slat that closes the opening of the building is fixed to the outer peripheral surface of the winding shaft via the suspending member, and the winding shaft is driven by the drive source such as a motor. It is designed to be rolled up.

[0004]

[Problems to be solved by the device]

 However, in the structure of the conventional winding shaft described above, when the height of the opening of the building to which the shutter is attached is large, the length of the shutter slat is set to be large. The take-up shaft diameter may need to be set larger. Therefore, there is a problem in that the weight of the winding shaft itself increases. Due to the increase in the weight of the take-up shaft, the strength of each member of the take-up portion of the shutter slat, such as the bearings at both ends that support the take-up shaft, is taken into consideration in addition to the weight of the shutter slat. Therefore, there is a problem that it is necessary to set the one having a sufficient strength more than necessary.

Therefore, in order to solve the above problems, the present invention has an object to provide a shutter winding structure for a shutter, in which the weight of the winding shaft for winding the shutter slat can be made light. There is.

[0006]

[Means for Solving the Problems]

 Next, means for achieving the above object will be described with reference to FIGS. 1 and 2 corresponding to the embodiment. The shutter winding shaft structure of this invention is a winding shaft structure that winds the shutter slat S of the shutter that closes the opening of the building. Both ends are rotatably supported and are linked to the drive source M. A plurality of rotary shafts 2 that are connected to each other and are driven to rotate are provided at a substantially central portion of the rotary shaft 2 at substantially equal intervals in the axial direction of the rotary shaft 2. The foil 7 has an upper edge connected to and fixed to the slat S.

In addition, the shutter winding shaft structure of the present invention is a winding shaft structure that winds the shutter slat S of the shutter that closes the opening of the building, and both ends thereof are rotatably supported. A rotary shaft 2 that is rotatably driven by being interlocked with a drive source M, and a plurality of rotary shafts 2 are provided at substantially the same intervals in the axial direction of the rotary shaft 2 so as to penetrate the rotary shaft 2 at substantially equal intervals. A wheel 7 to which the upper edge of the shutter slat S is connected and fixed to the outer peripheral edge portion, and a connecting rod 8 which is located in the vicinity of the peripheral edge of each wheel 7 and connects the wheels 7 to each other along the rotation axis 2. , May be provided.

[0008]

[Action]

 Both ends of the rotary shaft 2 are rotatably supported, and the rotary shaft 2 is rotatably driven by being interlocked with the drive source M. As a result, a plurality of rotary shafts 2 are arranged at substantially equal intervals in the axial direction of the rotary shaft 2. The shutter slat S connected and fixed to the outer peripheral edge of the foil 7 is wound up. In addition, each of the wheels 7 may be provided with a connecting rod 8 that connects the wheels 7 to each other along the rotating shaft 2.

[0009]

【Example】

 FIG. 1 is a schematic perspective view showing an embodiment of the shutter winding structure of the present invention. The winding shaft 1 is roughly composed of a rotary shaft 2, a wheel 7, and a connecting rod 8. First, the rotary shaft 2 is formed in a hollow pipe shape as shown in FIG. At one end 2a in the longitudinal direction (axial direction) of the rotary shaft 2, a shaft neck 3 having a diameter smaller than the diameter of the main body portion is concentrically provided so as to protrude from the end surface, and the other end 2b is fitted in the center. An end face plate 4 having a hole 4a is provided. A sprocket boss 5 is fitted and fixed to the end plate 4, and a sprocket 6 as shown in FIG. 2 is concentrically attached via the boss 5.

Next, as shown in FIG. 1, the wheel 7 is formed in a substantially disc shape having a diameter larger than that of the rotating shaft 2. A through hole 7a having a diameter substantially the same as the outer diameter of the rotating shaft 2 is formed in the center of the wheel 7, and a plurality of connecting holes 7b are formed at equal intervals on the peripheral edge. The wheel 7 is composed of a plurality of wheels, and the rotary shaft 2 is inserted into the through holes 7a and fixed at equal intervals in the axial direction of the rotary shaft 2.

The outer diameter of the wheel 7 is set according to the length in the height direction of the shutter slat S wound around the winding shaft 1. Although not shown, a suspension member is provided on the outer periphery of each of the wheels 7, so that the upper edge of the shutter slat S is fixed.

Next, the connecting rod 8 is composed of a small-diameter round pipe having a length substantially equal to that of the rotating shaft 2. The connecting rod 8 is composed of a plurality of rods and is inserted into the connecting holes 7b formed in the peripheral edge of the foil 7, respectively, so that the wheels 7 are connected and fixed to each other along the rotating shaft 2. It has become.

As shown in FIG. 2, the winding shaft 1 configured as described above has a bearing 13 provided on a pair of left and right brackets 11 and 12 in the shutter case 10 located above the shutter. , 14, both ends of which are supported, and a sprocket 6 provided at the other end 2b of the rotary shaft 2 is interlockingly connected to an electric motor M, which is a drive source, via a chain or the like 15. The electric motor M drives the take-up shaft 1 to rotate to take up the shutter slat S.

Therefore, in the structure of the winding shaft of the shutter configured as described above, the winding shaft 1 that winds the shutter slat S does not have a pipe shape formed with a large diameter as in the related art, but is a rotary drive. Since the rotary shaft 2 is formed with the minimum necessary diameter, and the foil 7 is formed with a diameter larger than that of the rotary shaft 2 and adapted to the length of the shutter slat S to be wound up, The weight of the take-up shaft 1 is sufficiently reduced. As a result, when the shutter slat S becomes large, if only the diameter of the wheel 7 is changed, it becomes possible to correspond to this shutter slat S, and the weight of the winding shaft 1 itself does not increase significantly. . That is, due to the increase in weight due to the lengthening of the shutter slat S, the strength of each member that supports the winding shaft 1 can be set and configured without considering the weight of the winding shaft 1.

In the above embodiment, an example in which a plurality of connecting rods 8 for connecting the respective wheels 7 are provided has been described. However, when the opening width of the opening in which this shutter is arranged is small, this connecting rod is provided. 8 may not be provided (not shown). In this case, the foil 7 may not be provided with the connecting hole 7b. The shape of the connecting rod 8 is not limited to the round pipe shape.

[0016]

[Effect of device]

 As described above, the shutter winding shaft structure according to the present invention has a rotating shaft on which the winding shaft for winding the shutter slat is formed with a minimum diameter required for rotational driving, and has a diameter larger than this rotating shaft. Since it is composed of a foil formed to have a diameter adapted to the length of the shutter slat to be wound up, there is an effect that the weight of the winding shaft itself becomes light. As a result, if the shutter slat becomes longer, changing the diameter of the foil alone will accommodate this shutter slat, and the weight of the take-up shaft will not increase significantly. There is. Further, in the structure of this winding shaft, since a plurality of wheels provided on the rotary shaft can be connected and fixed by the connecting rod, the rigidity of the winding shaft can be enhanced.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a shutter winding shaft structure according to the present invention.

FIG. 2 is a plan sectional view of the winding shaft according to the embodiment.

[Explanation of symbols]

1 ... Winding shaft 2 ... Rotating shaft 7 ... Wheel 8 ... Connecting rod M ... Drive source (electric motor) S ... Shutter slat

Claims (2)

[Scope of utility model registration request] 1. A winding shaft structure for winding a shutter slat of a shutter that closes an opening of a building, wherein both ends are rotatably supported, and a rotary shaft that is rotatably driven by being linked to a drive source. A foil having a plurality of substantially central portions that penetrate the rotation shaft and are arranged at substantially equal intervals in the axial direction of the rotation shaft, and an outer edge of each of which is fixed to an upper edge of the shutter slat. A winding shaft structure for a shutter, comprising: 2. A winding shaft structure for winding a shutter slat of a shutter for closing an opening of a building, wherein both ends are rotatably supported, and are connected to a drive source to be rotationally driven. A foil having a plurality of substantially central portions that penetrate the rotation shaft and are arranged at substantially equal intervals in the axial direction of the rotation shaft, and an outer edge of each of which is fixed to an upper edge of the shutter slat. A winding rod structure for a shutter, comprising: a connecting rod located near the periphery of each wheel and connecting the wheels to each other along the rotation axis.