JPH0310318Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a take-up wheel that allows the take-up spring of a shutter device to be mounted in an accurate position.

In general, in a shutter device in which a take-up wheel is supported on a fixed shaft installed in the shutter case, and the shutter curtain is moved up and down by rotation of the take-up wheel, the take-up winding of the shutter curtain is To ensure smooth operation, a take-up spring is provided with both ends fixed to a fixed shaft and a take-up wheel. However, conventionally, as shown in Figure 2,
One end of take-up spring b is fixed to fixed shaft a, and the other end of take-up spring b is fixed to a mounting hole drilled in the inner surface of take-up wheel c using bolt d. Even if you try to install it in the concentric position A, it will often end up being installed and fixed in the off-center position B due to installation errors, and the rotation of the take-up wheel c will apply torque to the take-up spring b. Sometimes, the take-up spring b becomes swollen or becomes meandering, making it impossible for the spring to perform to its full potential, making it impossible to smoothly wind and twist the shutter curtain. There was a risk that b would meander and come into contact with the fixed shaft a, cutting the fixed shaft a.

The present invention was devised in view of the above-mentioned actual situation and to eliminate these drawbacks, and in particular, fixes a rib body for regulating the position of the take-up spring to the take-up spring mounting surface of the take-up wheel. By protruding concentrically with the shaft, one end of the take-up spring is fixed to the fixed shaft, and the other end is attached to the mounting surface of the take-up wheel.
It can be mounted and fixed accurately in a position concentric with the fixed shaft, and even if torque is applied to the take-up spring due to the rotation of the take-up wheel, the take-up spring will not be overlaid or deformed into a meandering shape. It is an object of the present invention to provide a winding wheel for a shutter device that can fully exhibit the performance of a spring and can smoothly wind and twist a shutter curtain.

The structure of the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a fixed shaft installed within the shutter case, and a winding wheel 2 is rotatably attached to the fixed shaft 1. It is pivoted. Reference numeral 3 denotes a take-up spring inserted through the outside of the fixed shaft 1. One end of the take-up spring 3 is fixed to the outer peripheral surface of the fixed shaft 1, and the other end of the take-up spring 3 is fixed to the outer peripheral surface of the fixed shaft 1. A locking portion 4 bent into a hook shape toward the outer circumferential direction of the take-up spring 3 is attached to the take-up wheel 2.
It is fixed by being engaged with a bolt 5 screwed into a mounting hole on the inner surface.

On the mounting surface inside the winding wheel 2 to which the winding spring 3 is mounted and fixed, rib bodies 6, 6, . It protrudes concentrically with.

7, 7... are other rib bodies provided on the outside of the rib bodies 6, 6..., and are provided at positions corresponding to the outer diameters of the winding springs 3' of different sizes, in the same manner as the fixed shaft 1. It is a core-shaped protrusion.

In the above configuration, the take-up wheel 2
By rotating the shutter curtain, the shutter curtain wrapped around a winding drum (not shown) can be moved up and down. At this time, the winding spring 3, whose both ends are fixed to the fixed shaft 1 and the winding wheel 2, moves the shutter curtain By applying pressure in the winding direction, smooth winding and twisting operations can be performed.

Since the outer peripheral surface of the winding spring 3 is supported by the rib bodies 6, 6, etc., even if there is some installation error in the bolt 5, it is accurately installed and fixed in a position coaxial with the fixed shaft 1. Even if torque is applied to the take-up spring 3 due to the rotation of the take-up wheel 2, the take-up spring 3 is
There is no wobbling or meandering, the performance of the spring is fully exhibited, and the winding and twisting operations of the shutter curtain 1 can be made smooth. Also,
Since the take-up spring 3 does not meander and come into contact with the fixed shaft 1, it is possible to reliably prevent the fixed shaft 1 from being cut or the take-up spring 3 to be damaged, thereby ensuring the safety of the shutter device. Furthermore, the service life can be extended. Furthermore, the rib bodies 6 and 7 protruding from the winding wheel 2 can also be used as reinforcing members for the winding wheel 2, and the rib body 7 can also be used to attach another winding spring to the winding wheel 2 of the same shape. I can do it.

In short, the present invention fixes one end of a take-up spring to a fixed shaft installed in the shutter case, and fixes the other end of the take-up spring to the inner surface of a take-up wheel that is pivotally supported on the fixed shaft. In the shutter device, the shutter curtain is moved up and down by the rotation of the take-up wheel,
A rib body for regulating the position of the take-up spring was provided on the take-up spring mounting surface of the take-up wheel so as to protrude concentrically with the fixed shaft, so that one end of the take-up spring fixed to the fixed shaft could be It can be accurately installed and fixed on the mounting surface of the take-up wheel in a position concentric with the fixed shaft, and even when torque is applied to the take-up spring,
The shutter curtain can be wound and twisted smoothly without wobbling or meandering, and it also ensures the safety of the shutter device by preventing the fixed shaft from breaking or the winding spring from being damaged. can be ensured and its service life can be extended.
Furthermore, the rib body for position regulation can also be used as a reinforcing material, increasing the strength of the winding wheel, and it is also extremely useful that winding springs of different sizes can be attached to the winding wheel of the same shape. It has many practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the winding wheel of the shutter device according to the present invention, and are shown in FIGS.
B is a side view and a front view, and FIGS. 2A and 2B are a side view and a front view showing a conventional example. In the figure, 1...fixed shaft, 2...take-up wheel, 3
... Winding spring, 4 ... Locking part, 5 ... Bolt, 6, 7 ... Rib body.

Claims (1)

[Scope of utility model registration request] One end of the take-up spring is fixed to a fixed shaft installed in the shutter case, and the other end of the take-up spring is attached and fixed to the inner surface of a take-up wheel that is pivotally supported on the fixed shaft. In a shutter device that moves a shutter curtain up and down by rotation, a rib body for regulating the position of the take-up spring is provided on the take-up spring mounting surface of the take-up wheel so as to protrude concentrically with the fixed shaft. A take-up wheel for a shutter device featuring: