JPH04307061A - Waterproof type switch for portable bubble bath machine - Google Patents

Abstract

PURPOSE:To achieve use in an environment having a temperature change, a higher operability and a lower cost with a simple construction in a waterproof type switch of a portable type bubble bath machine. CONSTITUTION:A waterproof case 15 is incorporated and a charging section of a push switch 11 mounted on a substrate 12 is covered with an elastic filling agent 13. A rib 15b is provided on an internal wall on the side of a switch button 10 of the waterproof case 15 in such a manner as to surround the switch while being pressed on the filling agent 13. The force of a rubber type switch button 10 is lessened by narrowing a space in the perimeter of the switch thereby improving operability with lighter operating force of the switch.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof switch for a portable bubble bath machine.

0002

BACKGROUND OF THE INVENTION In recent years, there have been portable bubble bath machines that are easy to use, and there is a demand for reliable switch operation and ease of use.

A conventional waterproof switch for a portable bubble bath machine will be explained below with reference to FIGS. 3 and 4.

[0004] In the case of a portable type switch, since the entire device is used submerged in water, the following conditions are required for the switch:
(1) Complete waterproofing, (2) Prevention of leaks in the circuit due to condensation due to temperature changes, and (3) Measures against malfunction of switch buttons due to expansion and contraction of internal air due to temperature changes are required. Therefore, a reed switch 2 is built in a completely sealed waterproof case 1 without moving parts, and is covered with a filler 7. The outer case 3 with the switch button 6 is provided with a communication hole 3a so that no pressure is applied due to expansion and contraction due to temperature changes inside the case. Inside the outer case 3, there is a lever 5 that rotates in conjunction with the switch button 6. A magnet 4 is attached to the tip of the lever 5. When the switch button 6 is pressed, the lever 5 rotates and the magnet 4 approaches the reed switch 2 and turns on the switch.

[0005]

However, in the conventional configuration described above, due to the characteristics of the reed switch 2, an operating distance and a release distance are required for the magnet 4, and there is a limit to miniaturization. In addition, the case requires a duplicate case, which is expensive in terms of cost.

[0006] Also, if a push-type switch is built into a case with a rubber-type switch button provided in a part of the water-discharge case, the size can be reduced, but the air inside the waterproof case contracts and the inside When the air becomes negative pressure, the negative pressure may concentrate on the rubber switch cover and cause it to deform inward, causing the push switch to press and malfunction. In this case, if the volume inside the case is reduced, the influence of such negative pressure will be reduced, but due to the space, it was not possible to mount other components such as an LED display on the board.

The present invention solves the above problems, and aims to provide a waterproof switch that is easy to operate, has a simple structure, and is inexpensive.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a push switch mounted on a circuit board, a charging part filled with an elastic waterproof filler and built into a waterproof case, and a push switch mounted on a circuit board. A rib is provided on the inner wall of the case on the switch button side of the case to surround the switch and come into pressure contact with the filler.

[0009]

[Function] With the above configuration, the present invention reduces the volume of the space surrounding the switch, which reduces the force of negative pressure when the temperature drops, eliminates malfunctions even when the waterproof switch cover is weak, and allows light touch A switch can be made.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the waterproof switch for a portable bubble bath machine according to the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, a pump and a battery are built into the main body case 8, and there is a bubble water outlet 9 in the center of the front surface. At the upper front of the main body case 8, there are a switch button 10 for operation and a lamp display window 15a for indicating the operation mode.

FIG. 2 shows a cross section of the switch section, and shows a push switch 11 and a mode display LE on the board 12.
A D lamp 14 is mounted, and live parts such as switch legs, LED lamp legs, and circuit board patterns are covered with a filler 13 to make them waterproof to prevent leakage due to dew condensation. The board part on which each of the above-mentioned parts is mounted and the charging part is waterproofed with a filler 13 has a waterproof case upper part 15, a waterproof case lower part 16, and a packing 17.
It is tightened through and waterproof. waterproof case top 15
is made of a transparent material and also serves as a lamp display window 15a. The switch button 10 is made of rubber and is inserted between the main body case 8 and the waterproof case top 15. There is a push switch 1 on the inner wall of the waterproof case top 15.
A cylindrical rib 15b is provided so as to surround 1, and the edge portion thereof is in pressure contact with the filler 13.

In the above configuration, when the switch button 10 is pressed, the rubber deforms and the push switch 11 is turned on. When the switch is turned on, operation starts and the LED lamp 14 lights up and is displayed through the lamp display window 15a. Although the switch section is in a sealed state, the volume of the space in the switch section is reduced by surrounding it with ribs 15b. The pressure on the switch button 10 is small even when the temperature is in hot water or underwater. Even if the temperature of the hot water drops and the pressure inside the switch part decreases, the force that tries to deform the switch button 10 is small, and even if a soft rubber material is used, it will not malfunction.

[0014]

[Effects of the Invention] As is clear from the description of the embodiments above, the present invention utilizes the ribs and filler of the waterproof case to reduce the volume around the switch, thereby reducing expansion and contraction due to temperature changes. , a push switch mounted on a board can be used, and a switch with good operability can be provided.

[Brief explanation of the drawing]

[Fig. 1] Overall perspective view of a portable bubble bath machine according to an embodiment of the present invention.

[Figure 2] Cross-sectional view of the waterproof switch

[Figure 3] Cross-sectional view of a conventional waterproof switch in the OFF state

[Figure 4] Cross-sectional view of the waterproof switch in the ON state

[Explanation of symbols]

10 Switch button 11 Push switch 12 Board 13 Filler 15 On the waterproof case 15b Rib 16 Waterproof case bottom

Claims (1)

[Claims] Claim 1: A push switch is mounted on a circuit board, the circuit board is housed in a waterproof case, and a live part of the circuit board is covered with an elastic waterproof filler, and the push switch is mounted on the inner wall of the waterproof case on the switch button side. , surround the switch,
A waterproof switch for a portable bubble bath machine with a rib that presses against the filler.