JPH0241882Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a protective cover device that protects household electrical equipment, office equipment, etc. from dust, and in particular, a protection device that allows the cover sheet to be stored in a container when not in use. This invention relates to a cover device.

[Prior Art] When electrical appliances such as audio equipment and televisions are left in a room for a long time, dust and the like contained in the air adhere to them. If this dust enters and accumulates in precision parts such as high-voltage circuits and disks, it may cause fire or equipment failure.

Traditionally, to protect electrical appliances from such dust, they were covered with cloth or other materials when not in use, but it was troublesome to put on and remove these covers, and it was difficult to use the appliances. When you are
That is, it is troublesome to put away the cover when it is not needed, and sometimes the cover is lost after being removed many times.

This invention was made in view of the above conventional example,
To provide a protective cover device whose cover is easy to remove and can be easily stored when the cover is not needed.

[Means for Solving the Problems] In order to achieve the above object, the protective cover device of the present invention has the following configuration. That is, a cover sheet wound into a roll, a container that stores at least the cover sheet, and a container that acts to wind up the sheet with a constant torque, and when the sheet is pulled out, the self-weight of the sheet and the container that stores the cover sheet. The apparatus further includes a winding means for stopping the sheet at an arbitrary pulled-out position by a frictional force between the container and the sheet.

[Function] In the above configuration, at least the container stores the cover sheet wound into a roll, and the winding means winds up the sheet with a constant torque, and when the cover sheet is pulled out, the sheet's own weight and The friction force between the container and the sheet allows the sheet to be stopped at any desired pulled-out position. With this, when the cover sheet is easily pulled out from the container or when the pulled out sheet is to be stored, the sheet is wound up by applying a slight force in the direction of unwinding the sheet.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Description of the protective cover device (FIGS. 1 and 2)] FIG. 1 is an external view of the protective cover device 10 of the embodiment, with a portion cut away for explanation.

In the figure, 10 is the main body of the protective cover device of the embodiment;
11' is a roll portion in which the cover sheet 11 is wound into a roll. 13 is a constant torque motor for winding up the sheet 11, and the rotation of the motor 13 is controlled by gear 1.
4, 15 to the roll part 11'.
Gear 15 is a gear provided on the winding shaft of roll portion 11'.

The seat 11 is drawn out through an opening 16 in the body 10 having approximately the same width as the seat 11, and a weight portion 12 is provided at the end of the seat 11 opposite the body 10. 17 is electrical equipment such as audio equipment.

The length of the sheet 11 is sufficient to substantially cover the front part of the electrical device 17, and the width of the sheet 11 is approximately the same width as the electrical device 17. The sheet 11 is a cloth woven from translucent resin or the like, and has a weight corresponding to the torque of the constant torque motor 13.
In the pulled out state as shown in the figure, the constant torque motor 1
Since the torque of 3 and the sum of the weight of the pulled out seat 11 and the frictional force between the seat 11 and the lower part of the main body 10 are roughly balanced, the seat 11 stops at the position shown in the figure. This also applies when the seat 11 is stopped at a position other than that shown in FIG.

When rewinding the sheet 11 from the state shown in Figure 1,
By applying a slight upward force to the sheet 11 (in the direction of the main body 10) and breaking the balance between the torque of the constant torque motor 13 and the force in the sheet pulling direction by the sheet 11, the sheet 11 is wound up by the motor 13. and stored in the main body 10.

FIG. 2A is a side view showing the entire seat 11 stored in the main body 10, and FIG. 2B is a side view showing the seat 11 being pulled out from the main body 10 and stopped. Parts common to the figures are indicated by the same symbols.

As shown in FIG. 2A, there is a weight portion 12 at the tip of the sheet 11, and the thickness of this weight portion is larger than the width of the opening 16 of the main body 10.
Even when the sheet 11 is wound up as shown in the figure, the entire sheet 11 is prevented from entering the main body.

A protrusion made of rubber or the like is provided at the bottom of the main body 10, which serves to protect the electrical equipment 17 from being damaged, and when the sheet 11 is pulled out.
A frictional force is generated between the main body 1 and the electrical equipment 17.
0 is prevented from moving.

[Description of Constant Torque Motor (FIG. 3)] FIG. 3 is a diagram showing the configuration of the constant torque motor 13 of the embodiment. In the figure, 30 is a constant torque motor 13
31 is a top view when the outer case is removed, and 31 is a side view thereof.

In the figure, 20 is a spiral spring that always generates a constant torque regardless of the winding amount, for example
Made of SUS301EH. In the initial state, the spring 20 is wound around a drum 22, and the drawn-out tip of the spring 20 is fixed to the drum 21 by a round screw 23 of the drum 21. A gear 14 is attached to the shaft 24 of the drum 21, and as shown in FIG. 1, when the sheet 11 is pulled out, the drum 21 rotates in the direction of arrow E, and the spring 20 is pulled out from the drum 22. , and wound around the drum 21.

As a result, while the sheet 11 is being pulled out, a constant torque is applied by the motor 13 in the direction of rewinding the sheet 11 (in the direction opposite to the direction of arrow E). This torque is for example 120
g cm, which is set to be smaller than the total force of the seat 11's own weight and the frictional force between the seat 11 and the floor of the main body 10, so the seat 11 can be stopped at any pull-out position, and the force against the seat 11 is , sheet 11
By applying a slight force in the unwinding direction, the sheet 11 can be easily rewound into the main body 10.

Note that the constant torque motor 13 of the embodiment has a torque of
120g・cm±10%, rotation speed is 16, stroke is
A 1000mm motor (manufactured by Osaka Heat Treatment Co., Ltd.) is used.

As explained above, according to this embodiment, it was possible to provide a protective cover device in which the cover can be easily hung and removed, and the removed cover can be stored in the main body when the cover is not needed.

Also, by making the cover sheet translucent,
For example, when a covered electrical device is turned on, the light of the power lamp can be seen from the outside, eliminating the risk of leaving the electrical device unattended with the power turned on. In addition, since there is no need to touch the equipment while listening to music, etc., with audio equipment, etc., the indicators on the front panel of the equipment can be seen even if the cover is left on while playing, which improves aesthetics. But it's effective.

[Effects of the invention] As explained above, according to the invention, a protective cover device can be provided in which the cover sheet can be easily attached and removed, and the cover does not get in the way when the cover is not in use.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the configuration and usage state of the protective cover device of the embodiment, Fig. 2A is a diagram showing the state in which the seat is stored in the main body, and Fig. 2B is a diagram showing the state in which the seat is pulled out from the main body. 3A is a side view of the constant torque motor of the embodiment, and FIG. 3B is a front view of the constant torque motor of the embodiment. In the figure, 10... Protective cover body, 11... Sheet, 12... Weight portion, 13... Constant torque motor, 14, 15... Gear, 16... Opening, 17
...Electrical equipment, 20...Spring, 21, 22...Drum, 23...Round screw, 24...Shaft.

Claims (1)

[Claims for Utility Model Registration] (1) A cover sheet wound into a roll; a container for storing at least the cover sheet; A protective cover device comprising: a winding means for stopping the sheet at an arbitrary pulling position by the weight of the sheet and the frictional force between the container and the sheet when the sheet is pulled out. (2) The protective cover device according to claim 1, wherein the winding means is a constant torque motor.