JP2592726Y2 - Air switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air switch used in a bathroom unit or the like.

[0002]

2. Description of the Related Art There has been known a jet tub in which a jet of hot water and air bubbles is spouted vigorously to stimulate the whole body comfortably (see FIG. 2). The jet tub is operated by the air switch 1 including a hand switch 2 installed on a frame of the bath tub body B and a pressure sensor 4 connected to the hand switch 2 via an air pipe 3. When the hand switch 2 is pressed, the pressure sensor 4
The pump unit is operated via.

Specifically, as shown in FIG. 3, the hand switch 2 of the air switch 1 is a switch body 2 having a packing 21 mounted in a through hole b formed in a frame of a bathtub body B.
2, and a nut 23 is screwed into the switch body 22 from the back side of the frame and fastened. On the other hand, a bellows 24 is fitted into the switch body 22, and a push button guide 26 into which a push button 25 is inserted is fitted to the bellows 24. It is configured to be screwed into the switch main body 22 while being covered. One end of the air pipe 3 is connected to the switch body 22, and the other end is connected to a pressure sensor 4 provided at a position away from the bathtub body B.

Therefore, when the push button 25 of the hand switch 2 is pressed, the bellows 24 is contracted. As a result, a change in the pressure acts on the pressure sensor 4 through the air pipe 3 to switch the contact points, thereby operating a pump unit (not shown). I have.

[0005]

However, the above-mentioned hand switch 2 is always splashed with water because of being attached to the frame of the bathtub body B. As a result, the switch body 22 and the pusher screwed to the switch body 22 are pushed. Button guide 26
There is a problem that water enters the inside of the switch main body 22 along the joint surface with the pressure switch 4 and causes the pressure switch 4 to malfunction.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an air switch capable of reliably waterproofing a hand switch.

[0007]

SUMMARY OF THE INVENTION The present invention provides a switch body which is fitted through a through hole formed in a mounting portion via a packing and is fastened via a nut from the back side of the mounting portion. A push button inserted through a bellows, a hand switch having a push button guide screwed into the switch body while guiding the push button, and a pressure connected to the switch body of the hand switch via an air pipe. In an air switch including a sensor, a waterproof cover is provided to cover a push button of a hand switch, and a peripheral portion of the waterproof cover is sandwiched between joining surfaces of a switch body and a push button guide.

[0008]

The peripheral edge of the waterproof cover for covering the push button of the hand switch is sandwiched between the flange of the switch body and the flange of the push button guide.

As a result, the joint surface between the switch body and the push button guide is sealed by the waterproof cover to prevent water from entering the inside of the switch body, so that the pressure sensor does not malfunction.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

For convenience of explanation, the same members as those of the conventional example described above are denoted by the same reference numerals, and detailed description thereof will be omitted because they are duplicated.

In FIG. 1, a waterproof cover 5 formed in a cap-shaped cross section with a durable material such as silicon rubber is covered over the push button 25, and its peripheral edge 5 a is formed by a flange of the switch body 22. Part 22f
And the flange portion 26f of the push button guide 26. That is, when the push button guide 26 is screwed into the switch body 22 fitted in the through hole b and fastened by the nut 23, the waterproof cover 5 is put on the push button guide 26 on which the push button 25 is mounted, and the peripheral portion thereof is provided. 5a is wound around the flange portion 26f of the push button guide 26, and the push button guide 26 is
, The peripheral portion 5a of the waterproof cover 5 can be held between the flange portion 22f of the switch body 22 and the flange portion 26f of the push button guide 26.

As a result, the periphery 5a of the waterproof cover 5 is
Since it is sandwiched between the flange portion 22f of the switch body 22 and the flange portion 26f of the push button guide 26 and functions as a waterproof packing, the joint surface between the switch body 22 and the push button guide 26 can be securely sealed.
It is possible to prevent the pressure sensor 4 from malfunctioning due to water being immersed in the switch body 22.

In this embodiment, the hand switch is attached to the frame of the bathtub and the air switch is used to operate the jet set via the pressure sensor. However, the air switch can be used for operations other than the jet set. The mounting position of the hand switch is not limited to the bathtub, but may be installed on a waterproof pan or a counter.

[0015]

As described above, according to the present invention, the waterproof cover for covering the push button of the hand switch is provided, and the periphery of the waterproof cover is sandwiched between the joint surfaces of the switch body and the push button guide. Thus, the joint surface between the switch body and the push button guide can be reliably sealed, preventing water from entering the inside of the switch body and, at the same time, preventing malfunction of the pressure sensor.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hand switch of the air switch according to the present invention.

FIG. 2 is a perspective view showing a bathtub provided with an air switch.

FIG. 3 is an explanatory view showing a conventional air switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air switch 2 Hand switch 21 Packing 22 Switch body 24 Nut 24 Bellows 25 Push button 26 Push button guide 3 Air piping 4 Pressure sensor 5 Waterproof cover 5a Peripheral part B Bathtub body

Continued on the front page (56) References Japanese Utility Model 2-79874 (JP, U) Japanese Utility Model 2-37628 (JP, U) Japanese Utility Model 2-35732 (JP, U) Japanese Utility Model Utility Model 59-72640 (JP, U.S.A.) , U) JitsuHiraku Akira 59-49338 (JP, U) JitsuHiraku flat 4-99936 (JP, U) (58 ) investigated the field (Int.Cl. ^6, DB name) A61H 23/00 537

Claims (1)

(57) [Scope of request for utility model registration] 1. A switch body which is fitted through a through hole formed in a mounting portion via a packing and is fastened via a nut from a back surface side of the mounting portion, and a push body which is fitted into the switch body via a bellows. Button, a hand switch having a push button guide screwed into the switch body while guiding the push button, and an air switch including a pressure sensor connected to the switch body of the hand switch via an air pipe, An air switch, comprising a waterproof cover for covering a push button of a hand switch, and a peripheral portion of the waterproof cover being sandwiched between joint surfaces of the switch body and the push button guide.