TWM449948U - Temperature transducer - Google Patents

Description

Temperature Sensor

The creation is a temperature sensor, especially a temperature sensor that detects temperature data by contacting a surface of an object to be tested.

Sensors (sensors) are widely used in many industrial fields, especially those involving automatic control. Different types of sensors, such as temperature, pressure, infrared, and liquid, are defined according to the type of physical parameters sensed. Referring to FIG. 5, one of the existing temperature sensor structures mainly includes a temperature sensing component 60 and a fixing sleeve 70.

The fixing sleeve 70 is a long straight tubular tube having a uniform diameter, and has a hollow receiving chamber 71 formed therein, and a closed end 72 at one end of the fixing sleeve 70; the temperature sensing assembly 60 is completely disposed in the receiving portion The inside of the chamber 71, and the front end of the temperature sensing unit 60 is directly in contact with the inner side surface of the top end of the accommodating chamber 71.

When the temperature sensor detects the temperature of the object to be tested, the closed end 72 of the fixed sleeve 70 and the surface of the object to be tested are in contact with each other, and the temperature sensing component 60 indirectly detects the temperature from the fixed sleeve 70. Temperature sensing data of the object to be tested.

According to the structure of the foregoing temperature sensor, since the temperature sensing component 60 belongs to a relatively precise electronic component, the fixing sleeve 70 functions to allow the temperature sensing component 60 to be stably disposed inside thereof, and protect the temperature sensing component 60 from being protected. The external environmental factors affect the temperature measurement; therefore, the overall size of the fixed sleeve 70 must be of sufficient length to fully accommodate the temperature sensing assembly 60.

However, when the temperature sensing is actually performed, since the fixed sleeve 70 is in direct contact with the object to be tested, the thermal energy must be uniformly conducted to the entire fixed sleeve 70 before being transmitted to the temperature sensing assembly 60. As described in the preceding paragraph, the fixing sleeve 70 completely covers the entire temperature sensing component, and the fixing sleeve 70 has a relatively large volume, and it takes a long time for the thermal energy to be uniformly transmitted to the integral fixing sleeve 70, and the temperature sensing component 60 is measured. The temperature time is also delayed, so the temperature sensitivity is not good; in addition, if the fixed sleeve 70 itself has absorbed too much thermal energy, the temperature data measured by the temperature sensing component 60 cannot reflect the actual temperature of the object to be tested, resulting in The accuracy of temperature measurement is reduced, and the magnitude of temperature error may increase.

In view of the shortcomings of the existing temperature sensor using a fixed sleeve as a temperature conduction medium, which has poor temperature transfer efficiency and absorbs more thermal energy, the main purpose of the present invention is to provide a method for improving temperature transfer efficiency and reducing transmission medium. A temperature sensor that absorbs thermal energy.

In order to achieve the foregoing objective, the present temperature sensor comprises: a sleeve having a channel formed therein, and each of the two ends of the sleeve has a first through hole and a second through hole respectively communicating with the passage; a temperature conduction The inner portion of the temperature conducting member forms a closed temperature sensing portion, and the other end forms an opening communicating with the receiving chamber, and is formed at least on the outer surface of the temperature conducting member. a recessed portion, wherein the temperature conducting member is disposed inside the sleeve and the temperature sensing portion closes the first through hole of the sleeve, the temperature sensing portion is in contact with the surface of the object to be tested; and a temperature sensing component is disposed on the Inside the sleeve, the temperature sensing component includes a temperature sensing component and a grounding strip, wherein the temperature sensing component is placed at the temperature The accommodating chamber of the conductive member is coupled to the inner recess of the temperature conducting member.

The present invention utilizes a temperature conducting member disposed at one end of the sleeve as a heat conducting medium, the temperature conducting member is in contact with the surface of the object to be tested, and conducts the temperature of the object to be tested to the temperature sensing element; the temperature conduction is relative to the sleeve The utility model has the advantages of small volume and small constituent materials, natural heat transfer efficiency is naturally improved, and the thermal energy absorption amount thereof can be reduced to reduce the measurement error, and the temperature sensing element provided inside can be more quickly transmitted through the temperature conduction member. Sensing the temperature data of the object to be measured, and obtaining more accurate measurement results.

Referring to FIG. 1 and FIG. 2, the present temperature sensor mainly includes a sleeve 10, a temperature conducting member 20 and a temperature sensing component 30. The present invention may further include a first fixing according to the manner of actual sensing. The sheet 41, a second fixing piece 42 and a spring 50.

A sleeve is formed in the sleeve 10, and a first through hole 11 and a second through hole 12 are formed in the two ends of the sleeve 10. The outer surface of the sleeve 10 forms a protruding limiting portion 13 The limiting portion 13 of the embodiment is an annular flange.

The temperature conducting member 20 is disposed in the first through hole 11 of the sleeve 10, and the inside of the temperature conducting member 20 forms an accommodating chamber 21, and one end of the temperature conducting member 20 is a closed temperature sensing portion 22, The temperature sensing portion 22 is engaged at the edge of the first through hole 11, and the other end of the temperature conducting member 20 forms an opening 23 communicating with the accommodating chamber 21, and the outer periphery of the opening 23 forms a flange 230; The transmitting member 20 is formed with one or more recesses. In a preferred embodiment, the temperature conducting member 20 is adjacent to the sensing portion 22. The surface is retracted to form a first inner recess 24, and a second inner recess 25 is formed in the surface of the temperature conducting member 20 adjacent to the opening 23 at the other end. An annular convex portion 26 is formed between the first inner concave portion 24 and the second inner concave portion 25, and the edge of the annular convex portion 26 abuts against the channel surface of the sleeve 10, so that the temperature conducting member 20 can be raised. The stability in the tube 10 prevents sloshing due to the influence of external force.

The temperature sensing component 30 includes a temperature sensing component 31, a leadframe 32 and a grounding strip 33. The temperature sensing element 31 is disposed inside the accommodating chamber 21 via the opening 23 of the temperature conducting member 20, and is in direct contact with the temperature conducting member 20. The temperature sensing element 31 can be a negative temperature coefficient thermistor (NTC) or a positive temperature coefficient thermistor (PTC) having a pin 310 for transmitting a signal.

As shown in FIG. 3, the lead frame 32 is located inside the sleeve 10, and a plurality of wire grooves 320 for placing the pins 310 are formed on the surface. The ends of the pins 310 are electrically connected to a signal line 311, and the sensed result is obtained. The temperature signal can be transmitted from the signal line 311. In order to improve the connection strength between the pin 310 and the signal line 311, the present invention applies an encapsulant 34 on the lead frame 32 to cover the pin 310 and the signal line 311. The connection point, after the adhesive 34 is cured, can increase the tensile strength of the temperature sensing component 30.

The grounding piece 33 is formed by an arc-shaped metal conductive sheet body having a slightly C-shaped cross section and being detachably clamped to the second concave portion 25 of the temperature conducting member 20 while being abutted in a ring shape. The grounding piece 33 is connected to the flange 230 to prevent the falling off. The grounding piece 33 is connected to a grounding wire 330.

The first fixing piece 41 and the second fixing piece 42 respectively form a groove 410 and 420, and the bottom surfaces of the two grooves 410 and 420 are respectively formed into a penetrating shape. The first through hole 411 and the second through hole 421, in this embodiment, the inner diameters of the two grooves 410, 420 are not equal, and the inner diameter of the first groove 410 is larger than the inner diameter of the second groove 420. The outer diameter of the limiting portion 13 of the sleeve 10 is between the two inner diameters; and the fixing holes 412 and 422 are formed at two ends of the first fixing piece 41 and the second fixing piece 42.

The spring 50 is sleeved on the outer surface between the limiting portion 13 of the sleeve 10 and the second through hole 12.

After the assembly temperature sensor is assembled, as shown in FIG. 2, when the sleeve 10, the temperature conducting member 20 and the temperature sensing assembly 30 are assembled, one end of the sleeve 10 passes through the first through hole 411 of the first fixing piece 41 from the inside to the outside. Extending out, the other end extends from the inside to the outside through the second through hole 421 of the second fixing piece 42. The limiting portion 13 of the sleeve 10 can abut against the bottom surface of the groove 410 of the first fixing piece 41, and the spring One end of the 50 abuts against the limiting portion 13 and the other end abuts against the bottom surface of the recess 420 of the second fixing piece 42. The two fixing grooves 41 and 420 of the second fixing piece 42 are oppositely disposed to form an accommodating space for accommodating the sleeve 10, and the fixing holes 412 and 422 are aligned with each other.

As shown in FIG. 4, when the present invention is used to sense the temperature data of an object 100 to be tested, the temperature sensing portion 22 of the temperature conducting member 20 is in flat contact with the surface of the object 100 to be tested; The first fixing piece 41 and the second fixing piece 42 are stably coupled to a substrate 101 through the aligned fixing holes 412, 422, as indicated by arrows. The sleeve 10 is retracted in a direction away from the object to be tested 100 by abutting against the object 100 to be tested, and finally stops at the second fixing piece 42 by the limiting portion 13 thereof, and the spring 50 is compressed. The reverse portion 13 is provided with a reverse elastic force, and the reverse elastic force is applied to the sleeve 10 so that the temperature sensing portion 22 of the front end can be more closely contacted. The surface of the object 100 is measured to enhance the effect of temperature sensing, so that the temperature sensing effect is added accurately.

Compared with the prior art structure, the present invention utilizes the temperature conducting member 20 as a thermal energy transfer medium, the volume size thereof is relatively shorter, and the surface is retracted to form the first inner concave portion 24 and the second inner concave portion 25 to further reduce the configuration. The material of the temperature conducting member 20. Since the volume size and material of the temperature conducting member 20 are reduced, the heat transfer speed is relatively increased, and the heat energy absorbed by itself is reduced to reduce the error that may occur, and the temperature sensing element 31 located inside thereof can be quickly measured. The temperature data of the object is measured, and the obtained temperature data will be more precise. In the preferred embodiment, the material of the temperature conducting member 20 is made of aluminum material with good heat conductivity, which can improve the heat conduction rate and make the temperature sensing element 31 more Quickly sense temperature data.

10‧‧‧ casing

11‧‧‧ first through hole

12‧‧‧Second through hole

13‧‧‧Limited

20‧‧‧Temperature Conducting Parts

21‧‧‧ housing room

22‧‧‧Temperature Department

23‧‧‧ openings

230‧‧‧Flange

24‧‧‧First recess

25‧‧‧Second recess

26‧‧‧ annular convex

30‧‧‧ Temperature sensing components

31‧‧‧Temperature sensing components

310‧‧‧ pins

311‧‧‧ signal line

32‧‧‧ wire holder

320‧‧‧ wire trough

33‧‧‧ Grounding piece

330‧‧‧ Grounding wire

34‧‧‧Package

41‧‧‧First fixed piece

410‧‧‧ Groove

411‧‧‧ first through hole

412‧‧‧Fixed holes

42‧‧‧Second fix

420‧‧‧ Groove

421‧‧‧Second through hole

422‧‧‧Fixed holes

50‧‧‧ Spring

60‧‧‧ Temperature sensing components

70‧‧‧Fixed casing

71‧‧‧ housing room

72‧‧‧closed end

100‧‧‧ objects to be tested

101‧‧‧Substrate

Figure 1: An exploded perspective view of the temperature sensor.

Figure 2: A combined cross-sectional view of the present temperature sensor.

Figure 3: A plan view of the temperature sensing component of the present temperature sensor.

Figure 4: Schematic diagram of the application of the temperature sensor.

Figure 5: An exploded plan view of an existing temperature sensor.

10‧‧‧ casing

11‧‧‧ first through hole

12‧‧‧Second through hole

13‧‧‧Limited

20‧‧‧Temperature Conducting Parts

22‧‧‧Temperature Department

230‧‧‧Flange

24‧‧‧First recess

25‧‧‧Second recess

26‧‧‧ annular convex

30‧‧‧ Temperature sensing components

31‧‧‧Temperature sensing components

310‧‧‧ pins

311‧‧‧ signal line

32‧‧‧ wire holder

33‧‧‧ Grounding piece

330‧‧‧ Grounding wire

34‧‧‧Package

41‧‧‧First fixed piece

410‧‧‧ Groove

411‧‧‧ first through hole

412‧‧‧Fixed holes

42‧‧‧Second fix

420‧‧‧ Groove

421‧‧‧Second through hole

422‧‧‧Fixed holes

50‧‧‧ Spring

Claims (10)

A temperature sensor comprising: a sleeve having a channel formed therein, and a first through hole and a second through hole respectively communicating with the channel at both ends of the sleeve; a temperature conducting member having a body formed therein a receiving chamber, the one end of the temperature conducting member forming a closed temperature sensing portion, the other end forming an opening communicating with the receiving chamber, and the inner surface of the temperature conducting member is internally formed with at least one concave portion, wherein The temperature conducting member is disposed inside the sleeve and the temperature sensing portion closes the first through hole of the sleeve, and the temperature sensing portion is in contact with the surface of the object to be tested; and a temperature sensing component is disposed inside the sleeve, the feeling The temperature component includes a temperature sensing component and a grounding strip, wherein the temperature sensing component is disposed in the receiving chamber of the temperature conducting component, and the grounding strip is coupled to the inner recess of the temperature conducting component. The temperature sensor of claim 1, wherein the surface of the temperature conducting member is retracted to form a first recessed portion and a second recessed portion, the first recessed portion is adjacent to the temperature sensing portion, and the second recessed portion is adjacent to the opening An annular convex portion is formed between the first inner concave portion and the second inner concave portion, and the annular convex portion abuts against the channel surface of the sleeve; wherein the grounding piece is coupled to the second inner concave portion. The temperature sensor of claim 2, wherein a flange is formed around the opening of the temperature sensor; the grounding piece is a metal curved piece, which is sandwiched between the second concave portion of the temperature sensor and abuts in the ring shape. Between the convex part and the flange. The temperature sensor of 2 or 3, wherein the temperature sensing component comprises: a wire holder disposed inside the channel of the sleeve, wherein the wire seat surface is formed with a plurality of wire grooves; The temperature sensing component has a pin disposed inside the wire slot and electrically connected to the signal wire, the wire socket has an encapsulant to cover the connection between the pin and the signal wire; the grounding piece is connected A ground wire. The temperature sensor of 2 or 3, further comprising a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece are oppositely combined to form an accommodating space; The fixing piece and the second fixing piece are telescopically disposed in the accommodating space. The temperature sensor of claim 4, further comprising a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece are oppositely combined to form an accommodating space; A fixing piece and a second fixing piece are telescopically disposed in the accommodating space. The temperature sensor of claim 5, wherein the first fixing piece and the second fixing piece respectively form a groove, and the first through hole and the second through hole are respectively formed in the center of the bottom surface of the two grooves, and the two grooves are Forming the accommodating space in the opposite direction; forming a limiting portion on the surface of the sleeve, and winding a spring on the outer surface between the limiting portion of the sleeve and the second through hole; wherein the sleeve The two ends of the tube respectively extend from the first through hole and the second through hole of the first fixing piece and the second fixing piece; one end of the spring abuts against the limiting portion of the sleeve, and the other end abuts against the second fixing The inner bottom surface of the groove of the sheet. The temperature sensor of claim 6, wherein the first fixing piece and the second fixing piece respectively form a groove, and the first through hole and the second through hole are respectively formed in the center of the bottom surface of the two grooves, and the two grooves are Forming the accommodating space; Forming a limiting portion on the surface of the sleeve, and a spring is disposed on the outer surface between the limiting portion and the second through hole of the sleeve; wherein the two ends of the sleeve respectively extend the first portion The first through hole and the second through hole of the fixing piece and the second fixing piece; one end of the spring abuts against the limiting portion of the sleeve, and the other end abuts against the inner bottom surface of the groove of the second fixing piece. The temperature sensor of claim 7, wherein the inner diameter of the groove of the first fixing piece is larger than the inner diameter of the groove of the second fixing piece, and the outer diameter of the limiting portion of the sleeve is between the inner diameters of the two grooves. Between the dimensions; the first fixing piece and the second fixing piece are formed with a plurality of mounting holes. The temperature sensor of claim 8, wherein the inner diameter of the groove of the first fixing piece is larger than the inner diameter of the groove of the second fixing piece, and the outer diameter of the limiting portion of the sleeve is between the inner diameters of the two grooves. Between the dimensions; the first fixing piece and the second fixing piece are formed with a plurality of mounting holes.