JPH0420049B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a toilet seat device used in a Western-style toilet bowl, etc., which has a function of washing private parts with warm water or the like after defecating and then drying them with warm air.

Conventional Structure and Problems Conventionally, in this type of device, as shown in FIG. A drying device A is provided which constitutes a ventilation path 5 and has a built-in blower 8 and an electric heater 9 including an impeller 6 and a motor 7 for driving the impeller 6.
This drying device A is arranged at the upper rear part of the toilet bowl 1, and by energizing the electric heater 9 and operating the blower 8, air flows from the air supply port 3 to the discharge port 2 (indicated by the solid line arrow in the figure). ) was heated with an electric heater 9 and then discharged into the toilet bowl 1 from the discharge port 2 to dry the private parts. On the other hand, in order to direct hot air for drying in the local direction, the discharge port 2 has a cross-sectional area that gradually decreases as it reaches downstream, as shown in FIG. It was configured so that it was directed towards the local area.

However, in such a configuration, since the direction of the airflow discharged from the discharge port 2 is always in the same direction, the airflow is not sufficiently warmed by the electric heater 9 when drying of the local area starts. There was a problem in that the cold air flowed to local areas, causing discomfort to the user.

Purpose of the Invention The present invention solves the conventional problems by disposing a shape memory alloy in the hot air outlet for local drying disposed in the toilet seat device to improve the air flow during cold air and hot air. The purpose of this is to prevent cold air from hitting local areas by changing the direction of discharge.

Structure of the Invention In order to achieve this object, the present invention provides a discharge port that opens into the toilet bowl at the downstream end of the downstream ventilation path of an electric heater used for local drying, and forms an arc-shaped upper wall surface of the discharge port. A protruding wall is provided from the opposite lower wall surface to protrude toward the adhering wall to provide a ventilation path between the adhering wall and the downstream side of the adhering wall and the protruding wall. A drive spring made of a bias spring and a shape memory alloy is used between the projection wall and the lower wall surface of the projection wall, and a bias projection is provided that is movable up and down within a range in which the lower end does not exceed the upper end of the projecting wall.

According to the above configuration, when the airflow is discharged from the discharge port, the discharge direction is directed downward during cold air, and
When hot air is used, it can be directed towards local areas.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 shows the device B installed on the toilet bowl 11.
FIG. 4 is a partial cross-sectional view of the side surface disposed above, and FIG. 4 is a cross-sectional view of the main part thereof. In addition,
In FIGS. 3 and 4, solid arrows indicate the flow of hot air for local drying.

As shown in FIGS. 3 and 4, a blower 18 for blowing warm air for local drying and an electric heater 19 for heating the air are arranged inside the exterior 22, and the electric heater 1
The downstream end of the ventilation passage 15 provided on the downstream side of the toilet bowl 1
The discharge port 12 has an upper wall surface formed in an arc shape to form an adhesion wall 13, and a lower wall surface 16 opposite thereto. , a bias protrusion 14 is provided to have a ventilation passage 17 between it and the adhesion wall 13 . On the other hand, a projecting wall 23 is provided that projects from the lower wall surface 16 toward the attachment wall 13. Further, the bias projection 14 and the attached wall 13 are formed into a coil shape and are connected by a shape memory alloy 20 that contracts with hot air, and the bias spring 14 is connected between the bias projection 14 and the lower wall surface 16. 21, and the bias protrusion 14 is configured to be movable in the vertical direction between the attachment wall 13 and the lower wall surface 16. Here, the bias spring 21 is a coiled spring so that a tensile force that opposes the tensile force due to the shape memory alloy 20 acts. On the other hand, the range of movement of the bias protrusion 14 is set such that the upper end of the bias protrusion 14 moves between the upper end of the protrusion wall 23 and the attachment wall 13, and the lower end of the bias protrusion 14 does not exceed the upper end of the protrusion wall 23. are doing.

In this configuration, when the air blown by the blower 18 passes through the electric heater 19, it is heated and becomes warm air, which is discharged from the discharge port 12 into the toilet bowl 11.
Used for local drying. On the other hand, since the upper wall surface of the discharge port 12 is formed into an arc shape and the bias projection 14 is provided opposite to this, the ventilation path 15
The airflow flowing inside flows along the surface of the adhesion wall 13 due to the influence of the bias protrusion 14, and the airflow flows through the discharge port 1.
The direction of the airflow discharged from 2 is approximately tangential to the arc. That is, a flow is formed along the surface of the adhesion wall 13 due to the Coanda effect. However, the Coanda effect changes depending on the position of the bias protrusion 14. That is, when the bias protrusion 14 moves downward, the Coanda effect becomes weaker and the ejection direction changes downward. Therefore, when the air is cold, the bias spring 21 moves the bias protrusion 14 downward to discharge the cold air downward, and when the air is hot, the shape memory alloy 20
The bias protrusion 14 moves upward due to the force of the contraction, and hot air is discharged upward to be used for drying the local area.

Effects of the Invention According to the present invention, the upper wall surface of the discharge port is formed into an arc shape, and a bias protrusion is provided opposite to the upper wall surface of the discharge port, and the bias protrusion is configured to be movable in the vertical direction using a shape memory alloy and a bias spring. Therefore, the Coanda effect can be changed depending on the temperature of the airflow passing through it.
Therefore, when hot air is used, hot air is discharged in a local direction,
It is used for drying the local area, and when cold air is used, it can be discharged downward to prevent the cold air from coming into contact with the user.
It is possible to provide a comfortable toilet seat device.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional plan view of a conventional toilet seat device, FIG. 2 is a cross-sectional side view of the main parts thereof, FIG. 3 is a partial cross-sectional side view of a toilet seat device according to an embodiment of the present invention, and FIG.
The figure is a cross-sectional side view of the main part. B...Toilet seat device, 11...Toilet bowl, 12...Discharge port, 13...Adhesion wall, 14...Bias protrusion, 1
5... Ventilation duct, 16... Lower wall surface, 17... Ventilation duct, 18... Blower, 20... Shape memory alloy, 2
1... Bias spring.

Claims (1)

[Scope of Claims] 1. It has an air blower and an electric heater, and a hot air outlet for local drying that is open in the toilet bowl is provided at the downstream end of the ventilation path on the downstream side of the electric heater. The upper wall surface is formed into an arc shape to serve as the attached wall, and a protruding wall is provided from the lower wall surface toward the attached wall to provide a ventilation path between the attached wall and the downstream wall of the attached wall and the protruding wall. A driving spring made of a bias spring and a shape memory alloy is used between the lower wall surface of the side,
A toilet seat device equipped with a bias protrusion that is movable up and down within a range where the lower end does not exceed the upper end of the protruding wall. 2. The toilet seat device according to claim 1, wherein a shape memory alloy that contracts with warm air is arranged between the attachment wall and the bias protrusion.