JP3460309B2 - Temperature sensor switch for fan coil unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature sensor switch for a fan coil unit.

[0002]

2. Description of the Related Art Conventionally, there is a room thermostat for a fan coil unit that controls the temperature of a fan coil unit.

[0003]

Since the room thermostat for the fan coil unit is to be exposed on the wall surface, it not only conspicuously spoils the aesthetics of the room, but also has the same structure as the pre-wiring equipment similar to the ready-made wiring equipment. There was a problem that construction was difficult. Further, although some conventional room temperature thermostats for fan coil units can control temperature, minute temperature setting cannot be performed because the temperature adjusting means is a stepwise switching.

The present invention has been made in view of the above problems, and the object of claim 1 is that the switch box can be embedded and installed like the embedded wiring device, and the temperature can be set. It is to provide a temperature sensor switch for a fan coil unit that can be easily operated. It is an object of the invention of claim 2, anti-rattle operation knob depositing the operation shaft of the rotary variable resistor Gutotomo
Another object of the present invention is to provide a temperature sensor switch for a fan coil unit, which realizes an appropriate operation load and facilitates operation when setting the temperature of the temperature sensor.

The object of the invention of claim 3 is to provide a temperature sensor switch for a fan coil unit, which allows the temperature to be set by a linear operation and allows the user to intuitively know the temperature setting state at the position of the operating knob. To provide. Claim 4
An object of the present invention is to provide a temperature sensor switch for a fan coil unit, which can ensure temperature detection of a temperature sensor.

[0006]

In order to achieve the above object, in the invention of claim 1, a temperature sensor, a cooling / heating switching switch, a temperature setting variable resistor for setting an operating temperature, and a cooling / heating switching switch are provided. When the temperature is set to cooling, the temperature sensor detects the temperature above the operating temperature, and when the temperature is set to heating, the controller outputs a driving signal to the fan coil unit when the temperature detected is below the operating temperature. The switch body is dimensioned so that it can be fitted into the opening window of the mounting frame for mounting the switch box, and the latched parts that lock with the locking parts of the mounting frame are provided on both sides of the switch body. On the front of the switch body, the operation knob for the air-conditioning changeover switch, the operation knob for the variable resistor for temperature setting, and the sensor housing with the temperature sensor inside are exposed. It is those, the sensor container
Is the lower position of the operating knob and the front of the switch body
It is installed so as to project to the inside of the sensor
An air circulation hole that communicates is opened.

According to a second aspect of the invention, in the first aspect of the invention, a rotary variable resistor is used as the temperature setting variable resistor, and the rotary variable resistor is housed inside the switch body. The operation shaft is projected to the outside of the switch body from the opening window opened on the front surface of the switch body, the operation shaft is inserted into the insertion hole opened on the back side of the operation knob, and the operation knob is attached to the outer circumference of the operation shaft. , The protruding edge provided on the back side peripheral edge of the operating knob by the outward movement of the operating knob, which receives the biasing force of the coil spring interposed between the rear end of the insertion hole and the tip of the operating shaft, Is abutted on the back surface of the opening periphery.

According to the invention of claim 3, in the invention of claim 1, a slide type variable resistor is used as the variable resistor for temperature operation .

[0009]

According to the first aspect of the present invention, the switch box can be embedded in the same manner as a general embedded wiring device, so that the appearance of the room is not spoiled and the preceding wiring can be performed. Moreover, since the temperature setting uses a variable resistor, delicate temperature adjustment can be performed. The cell
Place the sensor housing below the operating knob.
It is installed so as to project to the front of the main body, and the sensor is stored above and below
Convection due to the opening of air circulation holes that communicate with the inside
To raise the rising airflow along the front of the switch body.
Touch the internal temperature sensor by passing it through the air passage hole below.
Therefore, the room temperature can be detected accurately.
You can

According to the second aspect of the present invention, a rotary type variable resistor is used as the temperature setting variable resistor, and the rotary type variable resistor is housed inside the switch body and is opened on the front surface of the switch body. The operating shaft is projected outside the switch body through the opening window, the operating shaft is inserted into the insertion hole opened on the back side of the operating knob, and the operating knob is attached to the outer periphery of the operating shaft. And the tip of the operating shaft, the protruding edge provided on the back side peripheral edge of the operating knob is moved to the back side of the opening peripheral edge of the opening window by the outward movement of the operating knob receiving the biasing force of the coil spring. since abuts able to slide and rotate the manual knob to the holding and properly load without play operation knob, it can be easily performed delicate operation when the temperature adjustment.

According to the invention of claim 3, since the slide type variable resistor is used as the variable resistor for temperature operation, the temperature can be adjusted by a linear operation, and the set temperature can be intuitively set at the position of the operation knob. You can also know .

[0012]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) In this embodiment, as shown in FIGS. 1 to 4, a ready-made mounting frame 1 formed in a series (three modules) type size corresponding to a standardized size module of general wiring equipment. The size of the switch main body 3 is formed so that the front part of the switch main body 3 can be fitted into the opening window 2 of the back side of the switch main body 3. The mounting frame 1 is made of metal or synthetic resin, like a general embedded wiring device. Can be attached to a switch box embedded in a wall surface or an embedded hole in a wall panel by using, and connection with the fan coil unit 33 can be performed by using preceding wiring.

The switch body 3 is a synthetic resin body 3A.
A cover 3B, and a printed board 6 on the body 3A side, on which a control unit 4 shown in FIG. 6, a cooling / heating changeover switch SW ₁ including a slide switch, a circuit element forming a power supply unit 5 and the like are mounted, Power supply terminal 7a. 7b and load connection terminals 8a and 8b for connecting an external load circuit including a fan coil unit, and a temperature sensor 9, a rotary variable resistor 10 for temperature setting, and a variable resistor 10 on the cover 3B side. A fixing screw 14 and a printed circuit board 12 on which a circuit element that constitutes a comparison unit 11 for comparing the voltage corresponding to the set temperature to be set with the voltage corresponding to the detected temperature of the temperature sensor 9 including a thermistor are fixed.
The printed circuit boards 6 and 12 are connected to each other by a flat cable 13.

A plurality of ribs 15 are integrally formed along the inner wall of the body 3A, and the printed circuit board 6 is formed on these ribs 15.
Is placed to arrange the printed circuit board 6 in the vicinity of the opening of the body 3A, and the terminal accommodating portions 16 are formed on both sides of the lower portion. The terminal accommodating portion 16 includes a terminal plate 17 and a lock spring 18.
And a release button 19 for releasing the locked state are housed, and the two fast connecting terminals on one side are the power supply terminals 7a and 7b.
The two quick-connect terminals on the other side are load connection terminals 8a and 8b.
Are configured. Body 3 corresponding to each terminal storage 16
Terminals 7a, 7b and 8 housed in the bottom of A are respectively
The wire insertion hole 16a and the release jig insertion hole 16b are penetrated so as to correspond to a and 8b.

On the other hand, the cover 3B has a cooling / heating changeover switch SW ₁ mounted on the front side of the printed board 6 on the body 3A side.
Window 20 for exposing the operating knob 27 of the above, and the operating knob 4 of the variable resistor 10 mounted on the printed circuit board 12.
With the insertion hole 21 for exposing 0,
The temperature sensor 9 is projected forward from the front surface of the cover 3B, and the housing 22 for housing the temperature sensor 9 is integrally bulged.

The operation knob 40 attached to the operation shaft 10a of the variable resistor 10 has an insertion hole 4 for inserting the operation shaft 10a on the back side.
1 is provided as shown in FIGS. 5 (a) to 5 (c). The cross-sectional shape of the insertion hole 41 is the cross-sectional shape of the operating shaft 10a,
In other words, the operation shaft 10a is made to have a substantially semicircular shape so that the operation shaft 10a can be co-rotatably rotated when the operation knob 40 is rotated. Further, a projection 43 for a spring seat, which is fitted into one end of the coil spring 42, is provided on the rear end surface of the insertion hole 41.
It is provided as shown in (a) and (e). That is, operation axis 1
When 0a is inserted into the insertion hole 41, the coil spring 42 is interposed between the tip of the operating shaft 10a and the insertion hole 41 as shown in FIG. A plurality of round protrusions 43a are formed on the outer peripheral surface of the protrusion 43 at equal intervals. The coil spring 42 is protruded to such an extent that the tip of the round protrusion 43a is lightly pressed against the inner surface of the through hole of the coil spring 42. Four
It is press-fitted and fixed to 3.

Further, on both outer wall surfaces of the cover 3B, there are integrally formed locked claws 23 for locking the locking portions of the synthetic resin mounting frame, and locking for locking the metal mounting frame. A recess 24 is formed. When assembling the switch main body 3, the body 3A is formed so that the tips of the locking pieces 25 protruding rearward from the center lower end and both upper sides of the cover 3B correspond to the respective locking pieces 25. It is inserted into the locking hole 26 on the side, the | portion 25a provided at the tip of the locking piece 25 is locked to the edge portion of the locking hole 26, and the cover 3B is attached and fixed to the body 3A.

At this time, the operating knob 40 attached to the operating shaft 10a of the variable resistor 10 is exposed to the outside from the back side of the cover 3B through the insertion hole 21.
0 tries to move outward along the operating shaft 10a by receiving the biasing force of the internal coil spring 42 in the outward direction, but the projecting edge 40a provided on the back side peripheral edge of the operating knob 40 is inserted through the cover 3B. The operation knob 40 comes into contact with the back surface of the opening edge of the hole 21, and when the operation knob 40 is rotated, the protruding edge 40a slides on the back surface of the opening edge of the insertion hole 21 to prevent the operation knob 40 from rattling. Therefore, it is possible to easily perform a delicate rotation operation of the operation knob 40 when adjusting the temperature.

Now, the switch body 3 of the temperature sensor switch S for the fan coil unit completed as described above.
In embedding the power supply line in the wall surface, the power supply line is previously attached to the mounting frame 1 made of synthetic resin or metal corresponding to the switch box (not shown), and is pre-wired in the switch box through the wall. And the load connecting wires are power supply terminals 7a, 7b and load connecting terminals 8a, 8 which are fast-connecting terminals
mounting holes 1a provided on the upper and lower sides of the mounting frame 1 by connecting to b
Wiring work is completed by fixing the switch box with a mounting screw (not shown) inserted through, and attaching a decorative cover (not shown) and a decorative plate (not shown) to the front side.

The temperature sensor switch S for the fan coil unit embedded in the wall surface is such that the operation knob 27 of the heating / cooling changeover switch SW ₁ , the operation knob 40 of the variable resistor 10 for temperature setting, and the sensor accommodating portion 22 are located on the wall surface. Since it only projects to the inside of the room, it does not impair the aesthetics of the room. Air passage holes 30a and 30b are opened vertically in the sensor housing portion 22 protruding to the inside of the room so that the air flow convection inside the room can easily come into contact with the temperature sensor 9 inside, and the cover 3B.
The air flow rising along the front surface of the air passage hole 30a,
It passes through 30b, and at the time of this passage, the sensor housing 2
By contacting the temperature sensor 9 inside 2, the temperature sensor 9 can accurately detect the room temperature.

Next, the circuit configuration of the temperature sensor switch for the fan coil unit of this embodiment and its operation will be described with reference to FIG.
It will be described based on. First, the power supply terminal 7a. The AC power source connected to 7b is stepped down via the capacitor C ₁ and the resistor R ₁ of the power source unit 5, then rectified and smoothed by the diode bridge DB and the smoothing capacitor C ₂ , and further stabilized to a constant voltage by the stabilizing circuit 31. After that, the power is supplied as power to the control unit 4.

The rectified and smoothed DC is supplied to the circuit on the printed circuit board 12 side. Here, in the circuit on the printed circuit board 12 side, the DC voltage is divided by the temperature sensor 9 and the resistor R ₂ , and the divided voltage is applied to the inverting input terminal of the comparison unit 11 which is a comparator. In addition, the DC voltage is divided by a series circuit of the resistor R ₃ , the variable resistor 10, the initial adjustment variable resistor R _4, and the resistor R _5, and the divided voltage output from the slider end of the variable resistor 10 is divided. Is applied to the non-inverting input terminal of the comparison unit 11. The comparator 11 compares the voltage applied to the non-inverting input terminal with the reference voltage applied to the inverting input terminal.

That is, the set temperature set by the resistance of the variable resistor 10 is converted into a voltage, and the voltage and the voltage generated across the resistor R ₂ according to the resistance change corresponding to the temperature detected by the temperature sensor 9 The comparison between the set temperature and the detected temperature is performed by the comparison unit 11. The resistors R ₆ and R ₇ are feedback resistors for giving a hysteresis to the comparison operation of the comparison section 11 to prevent chattering operation.

When the temperature detected by the temperature sensor 9 becomes high and the resistance value thereof becomes low, and the voltage generated across the resistor R ₂ becomes equal to or higher than the reference voltage corresponding to the set temperature, the comparison unit 11 outputs an output. On the contrary, when the temperature detected by the temperature sensor 9 becomes low and the resistance value becomes high and the voltage across the resistor R ₂ becomes equal to or lower than the reference voltage corresponding to the set temperature, the output is made "H".

[0025] The "L", the output of the "H" is adapted to input to the control unit 4 via the switching contact Air changeover switch SW _1. The control unit 4 has a heating / cooling selector switch SW ₁
Is connected to the cooling side a, and when the output of the comparison unit 11 becomes “L”, that is, when the detected temperature becomes equal to or higher than the set temperature, the transistor Q ₁ is turned on, and this further turns on. Turn on the transistor Q ₂ . This transistor Q ₂ is connected to the output of the stabilizing circuit 31 via a resistor R ₈ , and drives the set and reset signals of the two-winding latching relay Ry _{1 according} to the collector potential when the transistor is on and off. To the transistors Q ₃ and Q ₄ .

Two-winding latching relay Ry₁Is setco
Il SC and reset coil RC are drive tigers
Register Q₃, Q_FourTo the diode bridge DB via
Connected, transistor Q₃When is turned on,
Output contact r₁₁, R ₁₂Turn on and reverse Transis
Q_FourWhen is turned on, reset operation is performed and the output contact
r₁₁, R₁₂Is turned off.

The transistor Q ₃ is turned on when the collector potential of the transistor Q ₂ is "L", that is, when the transistor Q ₂ is on, the "H" signal is input to the base through the not gate NT ₁ , and on the contrary, the transistor Q 3 is turned on. when the _second collector potential is "H", that is the transistor Q ₂ is turned off to input the "L" signal to the base through the NOT gate NT ₁ when turning off.

On the other hand, the transistor Q ₄ is the transistor Q ₂
The collector potential of "L", that is, transistor Q
_{When 2} is on, the "L" signal is input to the base through the knot gates NT ₁ and NT ₂ to turn it off.
When the _second collector potential is "H", that is the transistor Q ₂ is turned on by entering the "H" signal to the base through the NOT gate NT _1, NT ₂ when turning off.

R of the output contacts of the latching relay Ry _1
11 is a load connection terminal 8 which is inserted between the power supply terminal 7a and the load connection terminal 8b and which is commonly connected to the power supply terminal 7b.
The supply of the AC power supply to the load side circuit including the fan coil unit 33 connected between a and the load connection terminal 8c is turned on / off. This on / off becomes the operation signal of the fan coil unit 33.

The output contact r ₁₂ is also connected to the base of the transistor Q ₄ to control the base current of the transistor Q ₄ .
It constitutes a control switch for the one-shot circuit 32 provided between the emitters. That is, in the one-shot circuit 32, when the transistor Q ₂ is turned on and the output of the knot gate NT ₁ becomes "H", the transistor Q ₅ is turned on and the base and emitter of the transistor Q ₄ are short-circuited. On the other hand, when the transistor Q ₃ is turned on, the latching relay Ry ₁ is set, and the output contact r ₁₂ is turned on, the stabilization circuit 31
The capacitor C ₃ is charged by the direct current from and the charging voltage reaches a certain level after a certain period of time and the knot gate N
When the output of T ₃ becomes "L", the transistor Q ₅ is turned off and the transistor Q ₄ can be turned on. When the output of the knot gate NT ₃ becomes “L”, the base of the transistor Q ₃ also becomes “L”, so that the transistor Q ₃ is turned off. That is, the exciting current flowing through the set coil SC is cut off.

When the transistor Q ₄ is turned on and the latching relay Ry ₁ is reset, the output contact r
_{When 12} is turned off and the electric charge of the capacitor C ₃ is discharged through the resistance circuit, and when the voltage drops to a predetermined level, the output of the knot gate NT ₃ becomes "H" and the transistor Q ₅ is turned on, and as a result, the transistor Q ₄ is turned on. turning off the transistor Q ₄ of the base as "L". That is, the exciting current flowing through the reset coil RC is cut off.

In this way, the action of the one-shot circuit 32 prevents the exciting current from flowing through the set coil SC and the reset coil RC for a certain period of time or longer. As described above, the fan coil unit temperature sensor switch S of this embodiment controls the control unit when the temperature detected by the temperature sensor 9 becomes equal to or higher than the set temperature when the cooling / heating changeover switch SW ₁ is turned on the cooling side a. The operation signal of the fan coil unit 33 is turned on by the function of 4, and when the temperature detected by the temperature sensor 9 becomes lower than the set temperature, the operation signal of the fan coil unit 33 is turned off. On the contrary, when the cooling / heating changeover switch SW ₁ is turned on the heating side a and the detected temperature of the temperature sensor 9 becomes equal to or lower than the set temperature, the control section 4 turns on the operation signal of the phon coil unit, and When the temperature detected by the temperature sensor 9 becomes higher than the set temperature, the operation signal is turned off.

FIG. 7 shows a system configuration in which this embodiment is connected to the load side circuit. In the system shown in the figure, an AC power source is connected to the power supply terminal 34 of the fan coil unit 33, and the fan coil of this embodiment is connected. An AC power supply is connected to the power supply terminals 7a and 7b of the unit temperature sensor switch S, and a fan coil air flow rate changeover switch device 35 is connected to the load connection terminals 8a and 8b, and an air flow rate changeover signal terminal of the fan coil air flow rate changeover switch device 35 is connected. (L), (M),
(H) is connected to the air volume switching signal terminals (weak), (medium), (strong) of the fan coil unit 33, and if necessary, the interlocking device 36 is connected to the fan coil air volume switching switch device 35.
To the power supply through. The fan coil air volume changeover switch device 35 is provided with an air volume changeover switch SW ₀ capable of setting the air volume of the fan coil unit 33 to three levels of low (L), medium (M), and high (H), and “off”. If the operation signal of the fan coil unit temperature sensor switch S is turned on according to the switching setting, the air volume switching signals of weak (L), medium (M), and strong (H) are turned on unless it is in the "off" state. , The fan coil unit 33 is given to the fan coil unit 33
It is intended to drive the car at that air volume. In addition, NL is a neon lamp indicating the ON state of the operation signal.

The fan coil air flow rate changeover switch device 35 has a switch main body formed by a series of dimensional modules similarly to the fan coil unit temperature sensor switch S of this embodiment. It is installed in a double-type switch box together with the sensor switch S. The operation knob 37 of the air volume changeover switch SW ₀ is exposed on the front surface of the switch body of the fan coil air volume changeover switch device 35.

(Embodiment 2) In Embodiment 1, the rotary variable resistor 10 is used to constitute the temperature setting means.
In this embodiment, a slide type variable resistor is used so that the temperature can be adjusted by linear operation and the set temperature can be intuitively understood at the position of the operation knob. In this embodiment, as shown in FIGS. 8 and 9, a slide type variable resistor 10 'is mounted and fixed on a printed circuit board 12, and an operating body 10a' thereof is vertically formed on one side of a cover 3B. Then, the operation knob 40 'is attached to the outside of the cover 3B so as to be vertically movable from the back side of the cover 3B, and the operation knob 4'is attached to the protruding tip.
The temperature setting position can be intuitively understood at the moving position of 0 '.

Since the other structure is the same as that of the first embodiment, no particular description will be given, and members having the same configuration and the same role are denoted by the same numbers and symbols as those in the drawing of the first embodiment.

[0037]

According to the first aspect of the present invention, the switch box can be embedded in the same manner as a general embedded wiring device. Therefore, the appearance of the room is not spoiled, and the preceding wiring can be performed. shall der perform subtle temperature adjustment Moreover, since the temperature setting is a variable resistor
The sensor housing at the position below the operating knob.
It is installed so that it protrudes from the front of the switch body, and the upper and lower sections
The air circulation hole that communicates with the sensor storage is open.
And convection causes the air to rise along the front of the switch body.
Pass the airflow through the upper and lower air flow holes to
It can be exposed to the temperature of the room, so that the room temperature can be detected accurately.
There is an effect that you can put out .

According to a second aspect of the present invention, a rotary variable resistor is used as the temperature setting variable resistor, and the rotary variable resistor is housed inside the switch body, and an opening is formed on the front surface of the switch body. The operation shaft is projected from the window to the outside of the switch body, the operation shaft is inserted into the insertion hole opened on the back side of the operation knob, the operation knob is attached to the outer periphery of the operation shaft, and the operation is performed with the inner end of the insertion hole. The protruding edge provided on the back peripheral edge of the operating knob is brought into contact with the back surface of the opening peripheral edge of the opening window by the outward movement of the operating knob that is subjected to the biasing force of the coil spring interposed between the distal end of the shaft and the shaft. As a result, the operation knob can be slidably rotated while holding it without rattling.
This has the effect of making it possible to easily perform delicate operations when adjusting the temperature.

According to the third aspect of the present invention, since the slide type variable resistor is used as the variable resistor for temperature operation, the temperature can be adjusted by linear operation, and the set temperature can be intuitively known at the position of the operating knob. There is an effect that you can also .

[Brief description of drawings]

FIG. 1 is a side sectional view of a state in which a mounting frame is attached to a first embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of the switch main body, partially omitted from the above.

FIG. 3 (a) is a front view showing a state in which it is mounted on a mounting frame of the same. (B) is a side view of the state where it is attached to the attachment frame of the same. (C) is a rear view in a state where the same is attached to the attachment frame.

FIG. 4 is a top view of the switch body of the same as above with the cover open.

FIG. 5 (a) is an enlarged rear view of the operating knob of the same.
(B) is an enlarged side sectional view of the operating knob of the above. (C)
[Fig. 3] is an enlarged top view in which the operation knob of the same is partially broken.
(D) is a front view of the above-mentioned operation knob. (E) is a principal part explanatory view same as the above.

FIG. 6 is a circuit diagram of the same as above.

FIG. 7 is a system configuration diagram using the same as above.

FIG. 8 is a side cross-sectional view of a state in which it is mounted on a mounting frame according to a second exemplary embodiment of the present invention.

FIG. 9 (a) is a front view showing a state in which it is attached to the attachment frame of the above. (B) is a side view of the state where it is attached to the attachment frame of the same.

[Explanation of symbols]

1 mounting frame 3 switch body 3A body 3B cover 10 variable resistors 10a Operation axis 21 insertion holes 40 Operation knob 40a protruding edge 41 insertion hole 42 coil spring 43 protrusions

Continuation of the front page (56) Reference JP-A-5-26505 (JP, A) JP-A-5-106908 (JP, A) JP-A-63-296706 (JP, A) JP-A-1-54163 (JP , A) JP 63-143601 (JP, A) Actual opening 62-6640 (JP, U) Actual opening Flat 3-3658 (JP, U) Actual opening 60-66076 (JP, U) Actual opening 63-145231 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 11/02 104 F24F 11/02 103

Claims (3)

(57) [Claims] 1. A temperature sensor, a heating / cooling selector switch, a temperature setting variable resistor for setting an operating temperature, and a temperature sensor detecting temperature above the operating temperature when the cooling / heating selector switch is set to cooling, It is equipped with a control unit that outputs an operation signal to the fan coil unit when the temperature detected by the temperature sensor is below the operating temperature when set to heating, and the size of the switch body is fitted into the opening window of the mounting frame for mounting the switch box. In addition to being formed to a size that is possible, the switch body is equipped with locked parts that lock with the locking part of the mounting frame on both sides, and the operation knob of the air conditioning heating switch and the temperature setting variable An operation knob of a resistor and a sensor housing section in which a temperature sensor is arranged are exposed, and the sensor housing section is the operation knob.
So that it protrudes to the front of the switch body at the lower position.
The air flow that is installed in the
A temperature sensor switch for a fan coil unit, characterized in that a common hole is opened . 2. A rotary type variable resistor is used as the temperature setting variable resistor, the rotary type variable resistor is housed inside a switch body, and its operating shaft is inserted from an insertion hole formed in the front surface of the switch body. Project outside the switch body,
Insert the operating shaft into the insertion hole opened on the back side of the operating knob and attach the operating knob to the outer periphery of the operating shaft, and use the coil spring that is interposed between the back end of the inserting hole and the tip of the operating shaft. 2. The fan according to claim 1, wherein a protruding edge provided on the back side peripheral edge of the operation knob is brought into contact with the back surface of the opening peripheral edge of the insertion hole by the outward movement of the operation knob that receives a biasing force. Temperature sensor switch for coil unit. 3. A sliding type variable resistor fan coil units for temperature sensor switch according to claim 1, characterized by using as a variable resistor for the temperature manipulation.