JPS6244214A - Torque reducing mechanism of automatic opening/closing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a torque reduction mechanism for a hinge shaft that is particularly suitable for use in an automatic opening/closing device for a Western-style toilet cover, toilet seat, or the like.

(Prior Art) In another application filed on the same day, the inventor proposed an automatic opening/closing device for covers, toilet seats, etc. in Western-style toilets that uses a drive motor in place of the conventional manual opening/closing device with a simple structure. .

This automatic opening/closing device can open and close toilet seats, etc., reliably and quietly without using hands, so even young children and people with disabilities can easily open and close toilet seats, etc., and even healthy people can easily drop toilet seats, etc. As a result, it had the advantage of helping to protect the heat insulation equipment and cleaning equipment, but it was desired to use a drive motor as small as possible mainly due to the installation location, so a small drive motor was used. However, there was a need to devise a way to ensure that the cover, toilet seat, etc. could be opened and closed smoothly without overloading.

(Technical Problem) The technical problem of this invention is to reduce the rotational torque of the hinge shaft to which the toilet seat, etc. is fixed, and to reduce the rotational torque of the hinge shaft to which the toilet seat, etc. is fixed, in particular, in an automatic opening/closing device for a Western-style toilet bowl cover or toilet seat that uses a drive motor. It is an object of the present invention to provide a torque reduction mechanism configured to allow smooth opening and closing without overloading the motor.

Note that this mechanism can be widely applied to automatic opening/closing devices for opening/closing bodies other than automatic opening/closing devices for Western-style toilet seats, etc., so in the examples described below, only automatic opening/closing devices for Western-style toilet seats, etc. will be explained. , but is not limited to this.

(Technical Means) In order to achieve the above-mentioned technical problem, the present invention provides an automatic opening/closing device for an opening/closing body using a drive motor, in which a hinge shaft to which the opening/closing body is fixed is biased to rotate in the opening direction. A torsion spring is attached, and one end of this torsion spring is locked to a resilient locking member.

(Example) Hereinafter, an example of the torque reduction mechanism for an automatic opening/closing device according to the present invention will be described in detail based on the drawings.

The gearbox 2 fixed to the upper left rear part of the toilet l has a
A driving force transmitting means 5 is installed, which includes a drive motor 3, a rotatably supported hinge shaft 4, and a number of reduction gears that link the hinge shaft 4 and the drive motor 3. For example, an opening/closing body 6 such as a toilet seat is fixed to l. A torsion spring 7 is attached to the hinge shaft 4 in order to control the load of the opening/closing body 6 attached thereto, and one end 7a of this torsion spring 7 is locked to a rotary plate 13 fixed to the hinge shaft 4. , the other end 7b is locked to a sliding plate 9 that is slidably attached to a frame 8 that attaches the hinge shaft 4 to the gearbox 2.

This sliding plate 9 is attached to a locking member 11 on which a compression coil spring 10 is applied, which is attached to the frame 8 with its locking portion 9a slidably in the sliding direction. I'm making it stop.

Therefore, the rotational driving force of the drive motor 3, which is rotated in forward and reverse directions by a switch (not shown), is transmitted to the hinge shaft 4 via the driving force transmission means 5, and opens and closes the opening/closing body 6. At an opening angle between 0° and 30' of the opening/closing body 6 to which the load torque is applied,
From the state shown in FIG. 1 to the state shown in FIG. 4, the end 7b of the torsion spring 7 that has locked the sliding plate 9 pulls the sliding plate 9, resisting the elasticity of the compression coil spring IO. This moves the torsion spring 7 together with the locking member 11 in the unwinding direction, so that the hinge shaft 7 is moved in the direction shown in FIG. 4 is reduced, and the opening/closing body 6 such as a toilet seat can be opened and closed sufficiently even with a small drive motor whose rotational torque is not very large.

Although the above embodiment has been described only in the case where the opening/closing body 6 is a toilet seat, this automatic opening/closing device is attached to the left and right sides of the rear upper part of the toilet bowl 1, and one opens and closes the toilet seat and the other opens and closes the cover. It is extremely rational to do so. In this case, please pay particular attention to 1. ? , the cover 12 is rotatably attached to the hinge shaft 7) 4 to which the toilet seat is fixed, and the toilet seat is rotatably attached to the hinge shaft on the side to which the cover is fixed. It will be attached to the shaft. And, the torque reduction mechanism according to the present invention is as follows.

As mentioned above, the present invention can be directly applied to automatic opening/closing devices for other opening/closing bodies.

Also, a locking member 1 on which a compression coil spring 10 is applied locks one end portion 7b of the torsion spring 7.
1 may be replaced with a tension coil spring; therefore, the i-members include both of these.

Further, the protrusion 13a provided on the rotary plate 13 functions to control the opening angle of the hinge shaft 4, that is, the opening/closing body 6.

(Effects) As explained in detail above, the torque reduction mechanism of the automatic opening/closing device according to the present invention can reduce the rotational torque of the hinge shaft at the opening angle of the opening/closing body where the load is the highest, so the drive motor does not have to rotate much. It is possible to use a small-sized device that does not have a large torque, which has the effect of reducing manufacturing costs and downsizing the entire device.

[Brief explanation of the drawing]

Figure 1 is a right side view of an automatic opening/closing device embodying this invention.
Fig. 2 is a rear view of the same, Fig. 3 is a front view showing the main parts of the present invention, Fig. 4 is a side view showing the same operational relationship, and Fig. 5 is the torque exhibited by the hinge shaft when the present invention is not implemented. FIG. 6 is a torque curve diagram of the hinge shaft when the present invention is implemented. l...φ toilet bowl 2φ... gear box 3...-
Drive motor 4...Hinge shaft 5--Driving force transmission means 6...Opening/closing body 7-Fist torsion spring 9φ...Sliding plate 10--Compression coil spring 11-
...Latching member 12--Cover patent applicant Kato Electric Co., Ltd. (□, -1゜Representative Patent attorney Sho Ito゛1, -・i
Figure 1

Claims (1)

[Claims] In an automatic opening/closing device for an opening/closing body using a drive motor, a torsion spring for biasing the opening/closing body to rotate in the opening direction is attached to the hinge shaft to which the opening/closing body is fixed, and one end of the torsion spring is attached to an elastic engagement member. A torque reduction mechanism characterized by being locked to a stop member.