JPH07926B2 - Power transmission mechanism of awning device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a power transmission mechanism of an awning device which is mounted on an outdoor terrace, an eaves of a store, etc. in a horizontal or inclined manner.

[Prior Art] A conventional awning device of this type is provided with a awning cloth winding drum on one end side of a frame body, and a wire winding drum is supported on the other end side of the frame body and fixed to the tip of the awning cloth. The wire is wound around the wire winding drum, and a) the awning cloth winding drum is driven and rotated by a motor to be rotated by a coil spring arranged in the wire winding drum during winding of the awning cloth. A force is accumulated so that when the sunshade cloth winding drum is freed, the sunshade cloth is stretched by the rotating force of the coil spring. (B) In the reverse of a), the wire winding drum is driven and rotated by a motor. While the awning cloth was being extended, the coil spring placed inside the awning cloth winding drum accumulated a rotational force to free the wire winding drum. A sunshade cloth is wound on a sunshade cloth winding drum by the rotating force of the coil spring, c) A dedicated motor is attached to each of the sunshade cloth winding drum and the wire winding drum, and the two motors are alternately driven. Therefore, the sunshade cloth was rolled up and overhanged.

[Problems to be Solved by the Invention] By the way, in each of the above-mentioned cases, a shade cloth winding drum is provided on one end side of the frame body, and a wire winding drum is supported on the other end side of the frame body. Therefore, even when the sunshade cloth is wound up, the wire winding drum is present on the other end side of the frame body, which disturbs the appearance and deteriorates the appearance.

In addition, in the above item (a), the sunshade is bulged by the accumulated rotational force of the coil spring (the rotational force of the coil spring decreases as the amount of overhang increases).
In the case of b), the sunshade is bulged by the tension of the motor (the larger the amount of bulging, the larger the resistance of the coil spring).
In both cases (2) and (4), the awning cloth tends to sag as the awning cloth is bulged, and rainwater accumulates or the appearance is further deteriorated.

Further, in the case of the above (c), since the motor is used twice, the cost becomes high and the installation of the motor is difficult.

The present invention has been made in view of such problems of the conventional technique, and the purpose thereof is to leave no obstacles in the shade device when the shade cloth is wound up, Another object of the present invention is to provide a power transmission mechanism for an awning device, which does not sag when bulged and has a good appearance, and which is further inexpensive.

[Means for Solving the Problems] In order to achieve the above object, a power transmission mechanism of an awning device according to the present invention includes an awning cloth winding drum driven by a motor, a wire winding drum adjacent to the awning cloth winding drum, and these drums. It is composed of a frame body that is supported rotatably, and the shaft of the wire winding drum and the wire winding drum are connected via a coil spring to increase the speed between the shaft of the shade cloth winding drum and the shaft of the wire winding drum. It was connected by a transmission mechanism.

Further, in the power transmission mechanism, the motor is fixed to the frame body and is arranged in the shade cloth winding drum so that the rotation shaft of the motor is connected to the shaft of the shade cloth winding drum.

Further, in the power transmission mechanism, a shade cloth winding drum and a wire winding drum are supported on one end side of the frame body, and a pulley for a wire is arranged on the other end side of the frame body, and at the tip of the shade cloth. The fixed wire is wound around the wire winding portion of the wire winding drum via the pulley.

Further, the wire take-up portion of the wire take-up drum has a one-clutch mechanism with respect to the wire take-up drum.

[Operation] When the sun shade cloth winding drum is rotated by driving the motor to discharge the shade cloth from the drum, the rotation of the sun shade cloth winding drum shaft is accelerated and transmitted to the wire winding drum shaft. The rotation of the shaft is transmitted to the wire winding drum via the coil spring. By rotating the wire winding drum, the wire winding portion pulls the tip of the awning cloth through the pulley to wind the wire, so that the awning cloth released from the awning cloth winding drum is stretched in a normal tension state. It is done. Then, the extra rotational force due to the acceleration is accumulated in the coil spring.

When winding the stretched sunshade cloth, if the rotation of the motor is reversed, this rotation is also accelerated and transmitted to the shaft of the wire winding drum, and the rotation of this shaft is wound by the coil spring. It is transmitted to the take drum. The rotation of the wire winding drum releases the wire from the wire winding portion, so that the awning cloth winding drum winds the awning cloth in a normally tensioned state. The extra rotational force due to the acceleration is used to release the spring force accumulated in the coil spring.

In this way, the awning cloth is always in a tension state both when the awning cloth is stretched and when it is wound. Moreover, as the amount of overhanging awning cloth increases, the accumulated force of the coil spring increases, so that the awning cloth does not sag.

Then, if the wire winding portion is a one-clutch mechanism with respect to the wire winding drum, the tension of the sunshade cloth at the time of so-called initial winding at the time of installing the awning device uses the one-clutch mechanism for the wire winding portion. The desired state can be achieved by manually rotating the wire to wind the wire.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a motor fixed to a frame body 2, a rotary shaft 3 of the motor 1 is fitted with a shade cloth winding drum 4, and a shaft 5 of the shade cloth winding drum 4 has a large diameter. The sprocket 6 is fixed. The shade cloth winding drum 4 is rotatably supported between the frame 2 and the frame 7 on the other side.

A wire winding drum 8 is rotatably supported between the frames 2 and 7 near the shade cloth winding drum 4.

A small diameter sprocket 10 is fixed to a shaft 9 of the wire winding drum 8, a roller chain 11 is wound between the large diameter sprockets 6, and the rotation of the shade cloth winding drum 4 is accelerated. 9 is transmitted. One end of a coil spring 12 is fixed to the shaft 9, and the other end of the coil spring 12 is fixed to a connector 13 provided on the wire winding drum 8. Further, wire winding portions 14, 14 are connected to both ends of the wire winding drum 8 with respect to the wire winding drum 8 by a one-clutch mechanism.

Thus, the shade cloth winding drum 4 and the wire winding drum 8 are adjacently supported on one end side of the frame bodies 2 and 7, but the pulleys for the wires 15 and 15 are provided on the other end side of the frame bodies 2 and 7. 16, 16 are arranged. The wires 15, 15 are fixed to the tip of the shade cloth 17 wound around the shade cloth winding drum 4, and the wires 15, 15 are connected to the wires of the wire winding drum 8 via the pulleys 16, 16. Winding part 14,14
It is wound around.

In the power transmission mechanism of the sunshade device according to the embodiment of the present invention having the above-described structure, when the sunshade cloth winding drum 4 is rotated by driving the motor 1, the sunshade cloth 17 is discharged from the drum, The rotation of the shaft 5 of the take-up drum 4 is transmitted to the shaft 9 of the wire take-up drum by being accelerated by a speed-increasing transmission mechanism including a large-diameter sprocket 6, a small-diameter sprocket 10 and a roller chain 11 wound between them. The rotation of the shaft 9 is transmitted to the wire winding drum 8 via the coil spring 12. By the rotation of the wire winding drum 9, the wire winding portions 14 and 14 pull the ends of the awning cloth 17 through the pulleys 16 and 16 to wind the wires 15 and 15, so that the wires 15 and 15 are discharged from the awning cloth winding drum 4. The sunshade cloth 17 is stretched under normal tension. Then, the extra rotational force due to the acceleration is accumulated in the coil spring 12.

Further, when winding the stretched sunshade cloth 17, if the rotation of the motor 1 is reversed, this rotation is also increased in speed by the speed increasing transmission mechanism and is transmitted to the shaft 9 of the wire winding drum 8. The rotation of the shaft 9 is transmitted to the wire winding drum 8 via the coil spring 12. Due to the rotation of the wire winding drum 8, the wire winding portions 14, 14 move the wires 15,
Since 15 is released, the shade cloth winding drum 4 is a shade cloth 17
Is to be wound up in the usual tense state. The extra rotational force due to the acceleration is used to release the spring force accumulated in the coil spring 12.

In this way, the awning cloth 17 is always in a tension state when the awning cloth 17 is stretched or wound. Moreover, as the amount of overhang of the shade cloth 17 increases, the accumulated force of the coil spring 12 increases, so that the shade cloth 17 does not hang down.

Since the wire take-up portions 14 and 14 have a one-clutch mechanism with respect to the wire take-up drum 8, the tension of the awning cloth 17 at the time of the initial winding uses the one-clutch mechanism to the wire take-up portions 14 and 14. The desired state can be achieved by manually rotating the wires 15 and 15 by winding them.

It should be noted that as the speed increasing transmission mechanism, two sprockets and a roller chain wound between them have been described, but a known speed increasing transmission mechanism using gears or a pulley and a V belt or rope is used. Good.

EFFECTS OF THE INVENTION According to the present invention, the awning cloth winding drum driven by the motor, the wire winding drum provided adjacent to the awning cloth winding drum, and the frame body rotatably supporting these drums can wind the awning cloth. When removed, no obstacle remains in the shade unit, and the shaft of the wire winding drum and the wire winding drum are connected via a coil spring, and the shaft of the shade cloth winding drum and the wire winding drum are connected. Since the shafts of the sunshade are connected by the speed-up transmission mechanism, the tension of the sunshade cloth increases as it is overhanged, and the sunshade cloth has no sagging and has a good appearance, and a large sunshade device can be obtained. .

Further, if the motor is fixed to the frame body and is arranged in the shade cloth winding drum so that the rotation shaft of the motor is connected to the shaft of the shade cloth winding drum, the appearance is further improved and the installation space is saved and the cost is reduced. You can get a cheap sunshade device.

Furthermore, a shade cloth winding drum and a wire winding drum are supported on one end side of the frame body, and a pulley for a wire is arranged on the other end side of the frame body, so that the wire fixed to the tip of the shade cloth is When it is wound around the wire winding portion of the wire winding drum through the pulley, when the awning cloth is wound, no obstacles remain in the awning device, and the wire can be blindfolded. The appearance will be even better.

If the wire winding part of the wire winding drum has a one-clutch mechanism with respect to the wire winding drum, the tension of the sunshade cloth at the time of the first winding may cause the wire winding part to be manually operated by using the one-clutch mechanism. Since the desired state can be obtained by rotating the wire and winding the wire, the attachment and adjustment of the wire becomes extremely easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a power transmission mechanism of an awning device according to the present invention, and FIG. 2 is an exploded view of a main part thereof. 1 ... Motor, 2 ... Frame, 4 ... Shade cloth winding drum, 5 ... Shade cloth winding drum shaft, 6 ... Sprocket, 7 ... Frame, 8 ... Wire winding drum, 9 ...
… Wire winding drum shaft, 10… Sprocket, 11
...... Roller chain, 12 ...... Coil spring, 14 ...... Wire winding part, 15 ...... Wire, 16 ...... Pulley, 17 ...... Sunshade

Claims (4)

[Claims] 1. A shading cloth winding drum driven by a motor, a wire winding drum adjacent to the shade cloth winding drum, and a frame for rotatably supporting these drums. The shaft of the wire winding drum and the wire winding A power transmission mechanism for an awning device, characterized in that the take-up drums are connected via a coil spring, and the shafts of the shade cloth take-up drum and the wire take-up drum are connected by a speed-up transmission mechanism. 2. A shading device according to claim 1, wherein the motor is fixed to the frame and is arranged in the shading cloth winding drum, and the rotation shaft of the motor is connected to the shaft of the shading cloth winding drum. Power transmission mechanism. 3. A awning cloth winding drum and a wire winding drum are supported on one end side of the frame body, and a wire pulley is disposed on the other end side of the frame body, and fixed to the tip of the awning cloth. The power transmission mechanism of the awning device according to claim 1, wherein the wire is wound around the wire winding portion of the wire winding drum via the pulley. 4. The power transmission mechanism for a sunshade device according to claim 3, wherein the wire winding portion of the wire winding drum is a one-clutch mechanism with respect to the wire winding drum.