JPH08635U - Bath remote control - Google Patents

Abstract

(57) [Abstract] [Purpose] The internal control of the bath remote control is released so as not to adversely affect the electronic components such as functional deterioration, thereby reducing the internal pressure change of the case and the malfunction. To provide a highly reliable bath remote controller. [Structure] A remote control case 1 is provided with a vent hole 2 that communicates the inside and the outside air, and a moisture-proof member 3 made of a film or the like that extends through the vent hole 2 but does not pass water, moisture, etc. is stretched. There is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a remote controller for a bath, which is installed in a bathroom and is used for controlling and controlling hot water supply, reheating, hot water supply, shower, etc. at hand.

[0002]

[Prior art]

 Since the remote controller for the bath is installed in the bathroom, electronic components such as resistors, capacitors, microcomputers, switches, LSIs, ICs, etc. inside the remote controller case are corroded by water droplets, moisture, etc., resulting in significant functional deterioration such as contact failure. Therefore, in the conventional bath remote controller, the case body equipped with the printed circuit board and the lid body that integrally forms the switch operating piece in a punched shape leaving the thin connecting portion are joined together with the packing at the peripheral joining portion. In addition, a thin elastic sheet that displays the function of each switch is attached to the upper surface of the switch operation piece to seal the inside of the case and prevent water drops, moisture, etc. from entering the case. There is.

[0003]

[Problems to be solved by the device]

 With the conventional bath remote controller, the case is sealed, so the internal pressure of the case changes abnormally due to the temperature difference between the temperature inside the case and the ambient temperature (outside air temperature) when manufacturing and assembling the remote controller for the bath. Then, when the inside of the case becomes negative pressure, the switch operating piece is pulled by the negative pressure, so that the push button of the switch is pressed and the contact point thereof may be closed to cause an erroneous operation. For this reason, there is a strong demand for countermeasures for eliminating the above malfunction in order to enhance its reliability. The present invention has been made in view of such problems and demands of the conventional bath remote controller, and the purpose thereof is to prevent the electronic parts from being adversely affected by the sealing inside the case. It is intended to provide a highly reliable bath remote controller that eliminates malfunctions by reducing changes in the internal pressure of the case in response to changes in the outside air temperature by releasing it so that it will not be released.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the bath remote controller of the present invention is provided with a ventilation hole in the remote control case, which communicates the inside with the outside air, and a membrane through which air passes but water and moisture do not pass. A moisture-proof member made of, for example, is stretched by pasting or other means.

[0005]

[Action]

 In the remote controller for a bath according to the present invention configured as described above, the inside of the case and the outside air communicate with each other through the ventilation hole provided with the moisture-proof member that allows air to pass through but does not allow water or moisture to pass through. Therefore, there is no pressure difference even if there is a temperature difference between the inside of the case and the outside air (atmosphere). Therefore, the case internal pressure does not rise or fall abnormally with respect to changes in the outside air temperature. Further, a moisture-proof member stretched over the ventilation hole blocks water drops, moisture and the like. Therefore, water droplets, moisture, etc. will not enter the case through the ventilation holes.

[0006]

【Example】

 An embodiment of a bath remote controller according to the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a remote control case, which is composed of a case body 1a and a lid body 1b, which can be joined together with a packing 4 interposed at a peripheral joint portion thereof. Inside the case body 1a of the remote control case 1, a printed circuit board 5 on which electronic components A such as resistors, capacitors, microcomputers, push switches, LSIs, ICs, LEDs are mounted is fixed by means of setscrews 6, and is attached to the rear surface. The lid 1b is provided with a lead wire connecting terminal 7, a mounting boss portion 8 and the like, and a switch actuating piece 9 for turning on and off the push switch S of the electronic component A is provided on the base plate of the top plate of the lid 1b. The switch connecting piece 9 is integrally formed in a punched shape, leaving the thin connecting portion 9a, so that the switch operating piece 9 can be bent inward (downward in FIG. 3) from the proximal thin connecting portion 9a against its restoring force. A push head 9b for pushing the push button 10 of the push switch S is integrally provided on the inner surface of the tip. Further, a plurality of space rods 11 are provided on the inner surface of the lid 1b so as to project. Reference numeral 2 denotes a ventilation hole for communicating the inside of the remote control case 1 with the outside air, which is formed in a substantially central portion of the back wall 1c of the case body 1a. The size of the ventilation hole 2 is about 2 to 3φ. Reference numeral 3 denotes a moisture-proof member stretched over the ventilation hole 2, which is, for example, a nylon cloth coated with polyurethane, and has a membrane or the like having pores through which air can pass but water and moisture cannot be blocked. To use. As shown in FIG. 4, the moisture-proof member 3 is formed in a disk shape having a diameter of about 18φ, and an arbitrary adhesive 3a is applied to the peripheral edge portion other than the ventilation hole 2 portion on one surface thereof. When the release paper 3b is attached to the adhesive 3a, the moisture proof member 3 can be formed by flipping the release paper 3b on the front surface (inner surface) or the rear surface (outer surface) of the ventilation hole 2 and attaching the release paper 3b. The moisture-proof member 3 can be stretched over. However, it goes without saying that the invention is not limited to the above embodiment. In addition, reference numeral 12 in the figure is an elastic sheet attached to the upper surface of the lid 1b. It is formed of a thin film sheet that displays the switch function of each switch actuating piece 9 for operating and stopping on the display portion 13, and the display portion 13 is positioned directly above each switch operating piece 9 to form an outer edge. The sheet 12 is pasted with an adhesive and the sheet 12 is punched to close the groove 14 to prevent water droplets or the like from entering the case. The operation of the above configuration will be specifically described based on experimental examples. A remote control case with a completely sealed inside (hereinafter referred to as a conventional product) and a remote control case with a 2 to 3φ ventilation hole and a moisture-proof member stretched over the ventilation hole (hereinafter referred to as an improved product) The pressure change in the remote control case was measured when the temperature changed from 0 ° C to 40 ° C. The results were as follows. A remote controller for the bath was installed inside the constant temperature bath, and a manometer and other equipment was installed outside the bath to conduct experiments. The relationship between temperature and time in a constant temperature bath for 1 cycle was set under the conditions shown in Table 1 and measured. As a result, the pressure change shown in Table 2 was obtained.

2-1 Heat cycle (measurement conditions)

[Table 1]

2-2 Pressure change

[Table 2]

The temperature inside the case is the temperature inside the case when the remote controller is manufactured and assembled. There is a temperature difference of 8 ° C. between the conventional product and the improved product, and there is a temperature rise / fall rate. Was determined to approximate the usage condition. The pressure change in the case measured under the above heat cycle is as described above. Here, the pressure of the sample reaches the peak value immediately after the temperature change to 0 ° C and 40 ° C (the peak time varies depending on the speed of the temperature change), but when the temperature is in the equilibrium state, the pressure in the case naturally becomes It becomes 0 mmH ₂ O. Air occupies a certain volume in the case. Therefore, in the gas reaction formula PV = RT, theoretically, when the volume is constant, the relationship between pressure and temperature is ΔP (mmH ₂ O) = 36.73 × ΔT ( ℃) holds. Therefore, in the conventional product, generating a maximum positive pressure 418mmH ₂ O, maximum negative pressure is generated - 457MmH has a ₂ O, also becomes a pressure change 875mmH ₂ O at a temperature variation of 41.3 ° C., theoretically, 41.3 × 36.73 = 1517mmH ₂ O, but this difference is considered to be because the pressure change is canceled by the volume of the manometer and its connecting pipe (because these are outside the constant temperature bath and do not contribute to the temperature change). In the above experimental example, when the internal pressure of the case becomes −140 mmH ₂ O, the switch operating piece 9 is pulled by the negative pressure, bends inward from the thin connecting portion 9a, and the push head of the push switch S is pushed by the tip push head 9b. 10 was pushed to operate the push switch S. However, since the improved product allows air to flow through the moisture-proof member 3 between the inside of the case and the outside air, the pressure change is reduced to 140 mmH ₂ O, which is about 1/6, and the maximum negative pressure generated is −6. It was reduced to 75mmH ₂ O and the push switch S did not operate. As is clear from the above experimental example, by providing the ventilation hole 2 for communicating the inside of the case with the outside air in the remote control case 1, even if there is a temperature difference between the inside of the case and the outside air, the pressure difference due to the inflow and outflow of air is small. Therefore, the change in the internal pressure of the case with respect to the change of the outside air temperature is reduced, and there is no possibility that the internal pressure of the case will exceed the pressure at which the push switch S operates −140 mmH ₂ O or more under normal operating conditions. S does not malfunction. Further, since the moisture-proof member 3 which covers the ventilation holes 2 but does not allow water and moisture to pass therethrough is covered with the moisture-proof members 3, the moisture-proof members 3 are blocked by the moisture-proof members 3 and enter the case through the ventilation holes 2. There is no.

[0010]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. Air is allowed to pass through the ventilation holes of the remote control case, but a moisture-proof member that does not allow water or moisture to pass through is installed to allow air to flow between the inside and outside of the case. Even if there is a temperature difference, there is no pressure difference, so the change in the internal pressure of the case is reduced with respect to the change in the outside air temperature. Then, malfunctions of switches and the like are eliminated, and their reliability is improved. Also, since the ventilation holes allow air to pass through by the moisture-proof member but not water or moisture, there is no intrusion of water or moisture into the case.Therefore, corrosion and function of various electronic components inside the case due to moisture, etc. No deterioration occurs. If the moisture-proof member is formed into a sheet with release paper as in the example, the work of tensioning the moisture-proof member to the ventilation hole can be performed efficiently, and the replacement of the moisture-proof member thereafter can be easily performed. is there.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a bath remote controller according to the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is an enlarged sectional view taken along line XX in FIG.

FIG. 4 is a partially cutaway perspective view of a moisture-proof member.

[Explanation of symbols]

1 ... Remote control case, 2 ... Vent hole, 3 ... Moisture-proof member

Claims (1)

[Scope of utility model registration request] 1. A remote control case (1) is provided with a vent hole (2) for communicating the inside with the outside air, and the vent hole (2) is made of a film or the like through which air passes but water and moisture do not pass. A remote controller for bath with a moisture-proof member (3) stretched.