JPH0538239Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a winding shaft structure in an electric shutter installed in an opening of a building.

[Problems to be solved by the prior art and the invention] In this type of electric shutter, the winding drum around which the shutter curtain is wound is rotated around the winding shaft which is fixedly supported on the bracket of the shutter case. There is one that is freely provided and rotated by an opening/closing machine provided on the winding shaft side while being installed inside the winding drum. In this case, it is necessary to insert a lead wire to the opening/closing machine, a manual wire for releasing the brake, etc. into the winding shaft and take it out from the end of the shaft. However, since the bolt shaft for attaching components such as ammunition storage devices is inserted through the winding shaft in the radial direction, the bolt shaft becomes an obstacle when trying to insert the above-mentioned threading member. This has caused problems, such as the lead wires getting in the way, bending, getting stuck, not being able to be inserted properly, and leading wires etc. to be damaged.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a winding shaft structure for an electric shutter that can eliminate these drawbacks. , a winding drum around which the shutter curtain is wound is rotatably provided on a hollow winding shaft that is fixedly supported by left and right brackets, and the winding drum is attached to the winding shaft while being inside the winding drum. In an electric shutter that is rotated by the drive of a fixed opening/closing machine, a guide member is provided in the winding shaft in the axial direction to avoid obstacles passing through the winding shaft in the radial direction. It is characterized in that it is formed into an insertion guide path through which the lead wire of the opening/closing machine is guided to the end of the shaft.

With this configuration, the present invention improves work efficiency by smoothly inserting the lead wire, etc. into the winding shaft, and also reliably prevents damage to the lead wire, etc. be.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, 1 is a shutter curtain of an electric shutter;
The winding drum 2 moves up and down along a guide rail 3 by forward and reverse rotation to open and close the opening, which will be described later. There is. That is, the opening/closing device 4 having a drive motor 7 installed therein is integrally fixed to a winding shaft 6 which is fixedly supported on the left and right brackets 5a of the shutter case 5. On the other hand, the winding drum 2 has a cylindrical shape and is rotatably supported on the winding shaft 6 via a bearing (not shown). However, an internal gear 8a formed on the inner peripheral surface of the intermediate wheel 8 of this winding drum 2
A drive gear 10 fixed to a motor shaft 7a of a drive motor 7 meshes with the drive gear 10. Then, the drive motor 7 is rotated in forward and reverse directions by operating a push button switch (not shown), thereby raising and lowering the shutter curtain 1 as described above.

Reference numeral 11 denotes a bullet interposed between the end wheel 9 of the winding drum 2 and the winding shaft 6, and the bullet 11 stores energy in the direction of winding up the shutter curtain 1. , one end is fixed to the winding shaft 6 by a bolt shaft 14 that extends radially through the winding shaft 6 . Further, end wheels 9 are provided at both left and right ends of the winding shaft 6.
A pin 12 for regulating lateral displacement is fixed through the shaft in the radial direction.

Reference numeral 13 denotes a guide member having a square cross section, and the guide member 13 is inserted and fixed into the hollow portion 6a of the winding shaft 6 so as to span the bolt shaft 14 and the pin 12. . That is, the guide member 13 allows the lead wire 15 of the drive motor 7 to be inserted through the hole 6b formed in the winding shaft 6, the release wire 16 of a motor brake (not shown) installed in the drive motor 7, etc. to be inserted therethrough. It is starting to form a route. Further, the leading end portion 13a of the guide member 13 in the insertion direction is formed into a sharp shape to facilitate insertion into the winding shaft 6.

In the embodiment of the present invention constructed as described above, when assembling the winding drum 2, winding shaft 6, etc., the ammunition 11
After the mounting bolt shaft 14 and the lateral slip prevention pin 12 are installed on the winding shaft 6, the guide member is inserted and fixed. However, the lead wire 15 and the wire 16 inserted through the hole 6b must be connected to the bolt shaft 14, etc. It is pulled out to the outside of the winding drum 2 through an insertion path formed while avoiding obstacles.

In cases where the present invention is implemented in this way,
Since the lead wire 15, wire 16, etc. will be inserted through the insertion path avoiding obstacles, the work of inserting the lead wire 15, etc. should be done in such a way that it will not hit any obstacles such as the bolt shaft 14 passed through in the radial direction. It can be done extremely smoothly. Therefore, it is possible to reliably prevent the lead wire 15 and the like from coming into contact with obstacles passed through in the radial direction and being damaged. Moreover, in the embodiment, this guide member 1
3 is designed to be supported using the bolt shaft 14 and pin 12, so there is no need to provide a special support member.

[Operations and Effects] In short, the present invention is constructed as described above, so that the threading member for the lead wire, etc., which is inserted into the winding shaft, avoids the through-bolts, etc., which are obstacles that pass through the winding shaft in the radial direction. Since the lead wires and the like pass through the defined insertion path, the lead wires can be inserted extremely smoothly. Therefore, it is possible to reliably prevent the lead wire or the like from coming into contact with an obstacle passed through in the radial direction and being damaged.

[Brief explanation of the drawing]

The drawings show the winding shaft structure of the electric shutter according to the present invention, in which FIG. 1 is a schematic front view of the electric shutter, FIG. 2 is a front view with a part of the winding drum omitted, and FIG. The figure is a sectional view of a main part of the winding shaft, FIG. 4 is a longitudinal sectional view thereof, and FIG. 5 is an overall perspective view of the guide member. In the figure, 1 is the shutter curtain, 2 is the winding drum, 4
5 is a shutter case, 5 is a bracket, 6 is a winding shaft, 12 is a pin, 13 is a guide member, 14 is a bolt shaft, and 15 is a lead wire.

Claims (1)

[Scope of utility model registration request] A winding drum around which the shutter curtain is wound is rotatably provided on a hollow winding shaft that is fixedly supported by left and right brackets, and the winding drum is fixed to the winding shaft while being inside the winding drum. In the electric shutter, the guide member is inserted into the winding shaft in the axial direction so as to avoid obstacles passed through the winding shaft in the radial direction. A winding shaft structure for an electric shutter, characterized in that an insertion guide path is formed to guide a passing member such as a lead wire of a switch to the end of the shaft.