JPH0728400Y2 - Shutter winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a shutter winding device, and more particularly, to urging a storage torque of a winding spring and a slat curtain to be wound up (or down). The present invention relates to an improvement of a winding device for a lightweight shutter, which is adapted to perform a winding operation by balancing the weight.

[Prior Art] As a conventional shutter winding device of this type, as shown in FIG. 4, a winding wheel (2) loosely fitted to a fixed winding shaft (1) is provided with a winding spring (2). By engaging with the winding shaft (1) through (3), the bias of the storage torque of the winding spring (3) and the hanging weight of the slat curtain (4) are balanced to balance the slat curtain (1). 4) is adapted to be wound up.

[Problems to be Solved by the Invention] However, in such a shutter, the opening and closing force of the shutter alternates between a heavy position and a light position, as shown by the solid line in FIG. The reason is that, as shown in FIGS. 5 (I) to (IV), the number and weight of the slats (4a) (4b) (4c) ... Wound on the winding wheel (3) depend on the winding wheel (2). This is because it changes from side to side, causing eccentricity and losing balance.

The present invention has been earnestly studied to solve such a problem, and as a result of an experiment in which a balancer (5) is attached to a predetermined position of the winding wheel (2), a curve as shown by a dotted line in FIG. The present invention was devised based on this new finding, and an object thereof is to provide a shutter winding device that smoothly opens and closes.

[Means for Solving the Problem] The configuration of the present invention for achieving this object will be described with reference to FIGS. 1 to 3 corresponding to the embodiment.

That is, according to the present invention, the winding wheel (2) loosely fitted to the fixed winding shaft (1) is engaged with the winding shaft (1) through the winding spring (3). In a shutter winding device in which the slat curtain (4) is wound based on the biasing of the stored torque of the winding spring (3), the winding wheel (2) of the slat curtain (4) is attached to the winding wheel (2). The winding shaft is centered on the side opposite to the hanging direction of the slat curtain (4) with respect to the fixed upper edge position, and is substantially the same as the first slat from the hanging point of the slat curtain.
A shutter winding device characterized in that a balancer (5) of a predetermined weight is attached at a position of the winding wheel that is offset by 90 degrees or a position of the winding wheel that is offset by approximately 45 degrees from the center of the slat curtain suspension base. is there.

[Operation] According to the above configuration means of the present invention, when the slat curtain (4) is opened and closed, the balancer (5) absorbs the effect of eccentricity due to the change in the number of slats wound around the winding wheel (2), The raising and lowering forces shown by the solid lines with peaks and valleys shown in the figure are converted into forces by the waveform balancer shown by the dotted lines, enabling smooth opening and closing of the shutter.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that the same reference numerals are used for the components common to the conventional ones.

FIG. 1 is a perspective view of a main part of a shutter winding device according to an embodiment of the present invention, and FIGS. 2 (I) to (IV) are explanatory views of the operation of the winding device.

As shown, the winding wheel (2) loosely fitted to the fixed winding shaft (1) is engaged with the winding shaft (1) through the winding spring (3). Common with conventional ones.

However, this embodiment mainly differs from the conventional one in that the take-up wheel (2) is provided with a balancer (5) of a predetermined weight.

Specifically, the balancer (5) is parallel to the winding shaft (1) so as to connect the inner circumferences of two adjacent winding wheels (2), and the two winding wheels (2) are parallel to each other. It is composed of a rod-shaped body that is bridged in between. Due to the mounting angle relationship between the balancer (5) and the slat curtain (4), the slat curtain (4) is suspended more than the upper edge position fixed to the winding wheel (2) of the slat curtain (4). A balancer (5) is attached at a position deviated from the direction by a predetermined angle.

The fixing of the slat curtain (4) to the take-up wheel (2) is specifically mounted via the suspension element (6). That is, the suspension source (6) is fixed to the outer circumference of the winding wheel (2) by the screw (7), and the suspension source (6) is fixed.
The slat curtain (4) is hung at the lower edge position of the balancer (5) at a position deviating from the upper edge position of the hanging source (6) by a predetermined angle on the side opposite to the hanging direction of the slat curtain (4). ) Is installed.

The angular position of the balancer (5) is the inner circumference of the winding wheel (2), which is deviated from the suspension base (6) by approximately 90 degrees with respect to the first slat (4a) about the winding shaft (1). The inner circumference of the take-up wheel (2), which is offset by approximately 45 degrees from the center of the suspension base (6), is selected as a guide.

The balancer (5) is not limited to the rod-shaped body, and a block body that can be individually attached to each winding wheel (2) can be selected.

Next, the operation of the embodiment configured as described above will be described.

Now, assuming that the shutter (8) in the closed state is to be opened, the winding wheel (2) is in balance with the hoisting force by the biasing of the accumulating torque of the winding spring (3) in FIG. Rotate clockwise to wind up the slat curtain (4). At that time, a large clockwise moment of inertia acts on the take-up wheel (2) by the balancer (5), and the number of slats wound around the take-up wheel (2) is as shown in Fig. 2 (I) → (II) → The fluctuation of the rotation speed during one rotation of the winding wheel (2) due to the eccentricity and the imbalance caused by the change of (III) → (IV) is alleviated by the inertia moment.

Conversely, when closing the shutter (8) in the open state, the outermost slat (4z) is pulled downward against the bias of the winding spring (3) to store the stored torque, and the slat curtain (4) is pulled downward. ) Pull out. At this time, the winding wheel (2) rotates counterclockwise in FIG.

At that time, a large counterclockwise moment of inertia acts on the take-up wheel (2) by the balancer (5), and the number of slats wound around the take-up wheel (2) is shown in Fig. 2 (IV) → The fluctuation of the rotation speed during one rotation of the winding wheel (2), which is caused by the change of (III) → (II) → (I), is absorbed by the moment of inertia and alleviated.

In addition, in this embodiment, since the balancer (5) has a rod-like shape, it can be used also as a connecting member for connecting the adjacent winding wheels (2), so that the structure is simplified.

[Effects of the Invention] As described above, in summary, in the present invention, the winding shaft is centered on the side opposite to the hanging direction of the slat curtain with respect to the upper edge position fixed to the winding wheel of the slat curtain,
Since the balancer is attached to the position of the take-up wheel that is offset by approximately 90 degrees from the slat curtain suspension origin or approximately 45 degrees from the center of the slat curtain suspension origin, the balancer is attached, so the spring balance The load that has an extreme difference in lightness and weight when the shutter is opened and closed is eased by the large moment of inertia of the balancer, and the shutter can be opened and closed smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a hoisting device for a shutter which is an embodiment of the present invention, and FIGS. 2 (I) (II) (III) (IV) are explanatory views of the operation of the hoisting device. FIG. 3 is an explanatory view comparing the load when the shutter is opened and closed with a conventional shutter hoisting device of the same hoisting device, and FIG. 4 is a plan view of a main part of the conventional shutter hoisting device, and FIG. ) (II) (III) (IV) are explanatory views of the operation of the conventional hoisting device. (1) …… Winding shaft, (2) …… Winding wheel, (3)…
… Winding spring, (4) …… Slat curtain,
(5) …… Balancer.

Continuation of the front page (72) Creator Toshihiko Ariyama 3-26-4 Shimura, Itabashi-ku, Tokyo Within Bunka Shutter Co., Ltd. (56) References Japanese Patent Publication Sho 58-36159 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A winding wheel, which is loosely fitted to a fixed winding shaft, is engaged with the winding shaft via a winding spring, so that the accumulated torque of the winding spring is urged. In the winding device of the shutter adapted to wind up the slat curtain, on the side opposite to the hanging direction of the slat curtain from the upper edge position fixed to the winding wheel of the slat curtain,
Centered around the take-up shaft, the take-up wheel position is approximately 90 degrees off the first slats from the slat curtain suspension, or the take-up wheel position is approximately 45 degrees off the slat curtain suspension center. A shutter winding device characterized in that a weight balancer is attached.