JPH0440128Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a structure for attaching a temperature detection sensor to a bath heater that is attached to the outer surface of a bathtub to adjust the heating of the bath, etc.

[Background Art] Conventionally, when attaching a temperature detection sensor to a bath heater attached to a bathtub, there is no easy and reliable method for attaching it, and the installation tends to vary, so the temperature of the temperature detection sensor This method had the disadvantage of causing variations in detection.

[Purpose of the invention] The present invention has been made in view of the above points, and provides an installation structure for a temperature detection sensor on a bath heater that can be easily and reliably installed and that provides stable temperature detection. The purpose is to

[Disclosure of the invention] That is, the mounting structure of the temperature detection sensor on the bath heater of the present invention is such that a nut 4 having a female thread 3 on the inner periphery is fixed to the bath heater 2 attached to the bathtub 1, and a nut 4 having a female thread 3 on the outer periphery is attached. 5 and a recess 6 with an opening on the side.
The thermistor 9 of the temperature detection sensor 8 is inserted into the recess 6 , and the thermistor 9 is buried in the recess 6 using the resin 10 filled in the recess 6 . The female thread 3 of the nut 4 above
A nut 4 is fixed to the bath heater 2 by welding or the like, and a temperature detection sensor 8 is attached to the nut 4. The above objective was achieved by attaching the holder by screwing.

The present invention will be described in detail below based on illustrated embodiments. As shown in FIG. 1, a bath heater 2 is attached to the outer surface of a bathtub 1. In the figure, 11 is a cold water inlet, 12 is a hot water outlet, 13 is a circulation pipe, and a cold water pipe 14 is formed on the lower side.
A hot water pipe 15 is formed on the upper side. Also, 1
6 is a protection plate. Two nuts 4 are fixed by welding or the like at optimal temperature detection positions on the back of the bath heater 2. This nut 4 is made of a metal material with excellent heat conductivity, such as stainless steel, and has a female thread 3 formed on its inner surface. The fixture 7 is made of a metal material with excellent heat conductivity such as stainless steel,
As shown in FIG.
is formed, and the fixture 7 is provided with a recess 6 that is open on one side. As shown in FIG. 2, the temperature detection sensor 8 has a thermistor 9 attached to one end of a vinyl chloride resin coated cord 17 and a sleeve terminal 1 attached to the other end of the cord 17.
A resin film 20 is formed around the thermistor 9 by immersion. The thermistor 9 is inserted into the recess 6 of the fixture 7, and a sealing resin 10 such as epoxy resin is filled in the recess 6 to seal it. Further, a groove 19 is formed on the inner surface of the recess 6 of the fixture 7, and when the thermistor 9 and resin 10 are filled into the recess 6, the resin 10 also enters into the groove 19. Because of the hardening, the mounting strength between the thermistor 9 and the fixture 7 can be increased, and the cord 17 can be prevented from coming off even if it is pulled. The inner surface of 7 is made watertight to prevent water from entering.

Therefore, when attaching the fixing device 7 to which the temperature detection sensor 8 is fixed to the bath heater 2, the male thread 5 on the outer periphery of the fixing device 7 is screwed into the female thread 3 of the nut 4. Therefore, the temperature detection sensor 8 can be easily and reliably detected.
can be attached to a suitable position on the bath heater 2, and can be easily removed.
Moreover, the connection between the fixing tool 7 and the nut 4 is a screw structure, so the degree of connection and adhesion is high, and temperature detection is stable.
There is also little variation. The heating level of the bath heater is adjusted based on the detection by the temperature detection sensor 8.

The shape of the groove 19 may be triangular or square in cross section as shown in FIGS. 4a and 4b.

[Effects of the invention] As described above, the present invention fixes a nut with a female thread to the bath heater, and installs a temperature detection sensor in the recess of the fixing device, which has a male thread on the outer periphery and a recess inside. Insert the thermistor, embed the thermistor in the recess with the resin filled in the recess, screw the male thread of the fixture into the female thread of the nut, and attach the fixture to the bath heater. The temperature detection sensor can be attached to the bath heater simply by screwing the external male thread onto the female thread of the nut, which has the advantage of being easy and reliable to attach. Moreover, since the fixture and the nut are connected to each other by a threaded structure, the degree of contact between the fixture and the nut is high, and the temperature detection is stable and there is little variation.

In other words, in this invention, by attaching a thermistor to the bath heater to control it, it is possible to accurately and reliably detect heat from the bath heater. This device is characterized by its simple structure, in which a fixing device with a built-in thermistor is screwed into this nut, and that it can be easily installed.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a state in which a temperature detection sensor is attached to a bath heater according to an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the same temperature detection sensor, and Fig. 3a. FIG.
FIG. b is a sectional view of a main part of another embodiment same as the above. 1 is a bathtub, 2 is a bath heater, 3 is a female thread, 4
is a nut, 5 is a male thread, 6 is a recess, 7 is a fixture,
8 is a temperature detection sensor, 9 is a thermistor, 1
0 is resin.

Claims (1)

[Scope of utility model registration request] A nut with a female thread on the inner periphery is fixed to the bath heater that is attached to the bathtub, and a sensor for temperature detection is inserted into the recess of the fixing device, which has a male thread on the outer periphery and a recess with an opening on the side. A bath heater is created by inserting a mister, embedding the thermistor in the recess using resin filled in the recess, and screwing the male thread of this fixture into the female thread of the nut to attach the fixture to the bath heater. Mounting structure for temperature detection sensor.