CN114216577A

CN114216577A - Polymer PTC temperature sensor

Info

Publication number: CN114216577A
Application number: CN202111425441.2A
Authority: CN
Inventors: 孙雨欣; 杨涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-03-22

Abstract

The invention relates to the technical field of sensors, in particular to a polymer PTC temperature sensor, which comprises a shell, wherein the left side and the right side of the inner surface of the shell are symmetrically and fixedly connected with a first spring, the other end of the first spring is fixedly connected with a fixing mechanism, a sensor main body is arranged in the fixing mechanism, the outer surface of the left end of the sensor main body is fixedly connected with a connecting pipe, and the left end of the connecting pipe is fixedly connected with a temperature sensing probe, the structure of the device not only can effectively fix the sensor main body, but also is convenient to disassemble and install, the sensor main body can be conveniently maintained and replaced without disassembling a motor, a large amount of manpower and material resources are saved, impurities such as oil stains and the like on the outer surface of the temperature sensing probe of the sensor can be effectively cleaned, the sensitivity of the temperature sensing probe is prevented from being influenced, and the service life of the device is greatly prolonged, the whole structure is simple, and the practicability is strong.

Description

Polymer PTC temperature sensor

Technical Field

The invention relates to the technical field of sensors, in particular to a high-molecular PTC temperature sensor.

Background

The PTC temperature sensor is a thermistor with positive temperature coefficient, the resistance value changes in direct proportion with the temperature, two wires can be connected with a signal input end at will, the thermistor is made of semiconductor materials, most of the thermistor is negative temperature coefficient, namely the resistance value decreases with the increase of the temperature, and the change of the temperature can cause large resistance value change, so the PTC temperature sensor is the most sensitive temperature sensor, but the linearity of the thermistor is extremely poor and has great relation with the production process, a manufacturer does not give out a standardized thermistor curve, and the PTC thermistor is used for the over-temperature detection of a sleeve type for over-temperature protection, is commonly used for the over-temperature detection of a motor, a coil, a transformer, equipment, a machine and the like, and is widely applied;

the temperature of large-scale machine internals such as measurement motor is used commonly to traditional polymer PTC temperature sensor, prevent the overheated harm machine of machine, and traditional temperature sensor often sets up the inside at the motor, when it takes place to damage, the user need dismantle the motor and take out the sensor and maintain, bring and big trouble for the user, and damage the motor easily at the in-process of dismantling, and the motor is when using, especially great motor, the during operation can produce great vibrations, bring the harm to its inside sensor very easily, bring economic loss for the user, bring the influence to detecting whether normal work of motor, whole remains to improve.

Therefore, a polymer PTC temperature sensor is proposed.

Disclosure of Invention

The present invention is directed to a polymer PTC temperature sensor to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a macromolecule PTC temperature sensor comprises a shell, wherein the left side and the right side of the inner surface of the shell are symmetrically and fixedly connected with a first spring, the other end of the first spring is fixedly connected with a fixing mechanism, and a fixing assembly is fixedly connected to the position, close to the right end, of the outer surface of the shell;

the sensor comprises a fixing mechanism, a sensor body, a connecting pipe, a temperature sensing probe, a pinching block, pins, a clamping column, a sealing block, a control system, a cleaning assembly, a sensor body, a connecting pipe, a temperature sensing probe, a pinching block, a pinch block, pins, a clamping column, a sealing block and a cleaning assembly, wherein the sensor body is arranged in the fixing mechanism, the connecting pipe is fixedly connected to the outer surface of the left end of the sensor body, the temperature sensing probe is fixedly connected to the left end of the connecting pipe, the pinching block is fixedly connected to the outer surface of the right end of the sensor body, the pins are symmetrically arranged on the front side and the rear side of the pinching block, the clamping column is fixedly connected to the position, close to the right end, of the outer surface of the upper end of the sensor body, the sealing block and the sealing block are matched with the clamping column, the pins extend to the outside through the sealing block and are electrically connected with the control system, the cleaning assembly is arranged on the left side of the outer shell, the fixing mechanism and the cleaning assembly are matched with the cleaning assembly, so that the sensor body can be well fixed and effectively cleaned, and the sensor body, and the damage caused by vibration can be greatly reduced, the service life of the device is prolonged.

Preferably, the first springs are volute springs, the number of the first springs is two, and a buffer rubber ring is fixedly connected between the inner surface of the shell and the first springs.

Preferably, the fixing component comprises a fixing block, threads and a guide groove;

the surface of shell is close to the position fixedly connected with fixed block of right-hand member, and it is T type structural design, the surface left end of fixed block has seted up the screw thread, the position that the left side surface of fixed block is close to the screw thread is provided with rubber seal, the position that the right side surface of fixed block is close to the upper end has seted up the guide way.

Preferably, the fixing mechanism comprises a fixing barrel, a second spring and a limiting groove;

the sensor comprises a shell, a first spring, a second spring, a connecting pipe and a clamping column, wherein the first spring is fixedly connected with a fixed cylinder close to the center of the shell, the left end of the inner surface of the fixed cylinder is fixedly connected with the second spring, the right end of the second spring is in mutual contact with the sensor body and is sleeved on the outer surface of the connecting pipe, a limiting groove is formed in the position, close to the upper end, of the outer surface of the fixed cylinder, and the limiting groove and the clamping column are matched and clamped with each other.

Preferably, the limiting groove is designed to be of an n-shaped structure, and one end of the limiting groove is communicated with the outer surface of the right end of the fixed cylinder.

Preferably, the inner surface of the shell is fixedly connected with the chuck on the left side, the clamping groove is formed in the outer surface of the right side of the chuck, the outer surface of the fixed cylinder is close to the clamping block fixedly connected with the left side, and the clamping block is matched with the clamping groove.

Preferably, the cleaning assembly comprises a guide rod, a pressing block, a spring III, a fixing ring, a guide block, a connecting rod I, a connecting rod II, a sleeve, a spring IV and a cleaning block;

the interior of the guide groove is movably connected with a guide rod, the right end of the guide rod is fixedly connected with a pressing block, a spring III is arranged between the outer surface of the guide rod, which is close to the fixed block, and the pressing block, a fixed ring is fixedly connected with the left end of the guide rod, the upper end and the lower end of the outer surface of the left side of the fixing ring are symmetrically and fixedly connected with a first connecting rod, the upper end and the lower end of the outer surface of the shell are fixedly connected with a guide block at the position close to the left end, the first connecting rod penetrates through the guide block, the two are movably connected, a second connecting rod is fixedly connected at the position, close to the inner side, of the outer surface of one side, close to the temperature sensing probe, of the first connecting rod, a sleeve is sleeved on the outer surface of the second connecting rod, and both of them are T type structural design and match each other, the outer surface of connecting rod has cup jointed spring four near between sleeve and the connecting rod one, sleeve lower extreme fixedly connected with clearance piece.

Preferably, the number of the cleaning blocks is two, and the two cleaning blocks are both designed into arc structures and matched with the temperature sensing probe.

Preferably, the position that the sleeve left side surface is close to the clearance piece has seted up logical groove, the fixedly connected with stopper of the position that the left side surface of shell corresponds logical groove, the stopper runs through logical groove.

Preferably, the limiting blocks and the through grooves are in inclined structural design, matched with each other and connected in a sliding mode.

Compared with the prior art, the invention has the beneficial effects that:

1. the fixing mechanism and the fixing assembly are added in the device, so that the sensor main body can be effectively and well fixed, the device is convenient to disassemble and install, the sensor main body can be conveniently maintained and replaced without disassembling a motor, a large amount of manpower and material resources are saved, the device can have an effective damping function on the sensor main body when in use, the damage to the sensor caused by machine vibration is reduced, the service life of the device is greatly prolonged, and the normal work of the sensor is ensured;

2. through adding the clearance subassembly in the device, can effectually clear up the temperature sensing probe of sensor, prevent that it from using the back for a long time, the inside machine oil of machine volatilizees and adheres to and form the greasy dirt at its surface, influences the sensitivity of temperature sensing probe with other impurity, carries out regularly clearance to it, the effectual normal work who guarantees the sensor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is an overall front cross-sectional view of the present invention;

FIG. 3 is a combined cross-sectional view of the housing and the first spring of the present invention;

FIG. 4 is a view of the combination of the fixing cylinder and the limiting groove of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 2 of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 2 in accordance with the present invention;

fig. 7 is an enlarged view at C of fig. 2 of the present invention.

Description of reference numerals:

1. a housing; 2. a fixing assembly; 21. a fixed block; 22. a thread; 23. a guide groove; 3. a first spring; 4. a buffer rubber ring; 5. a fixing mechanism; 51. a fixed cylinder; 52. a second spring; 53. a limiting groove; 6. a sensor body; 61. a connecting pipe; 62. a temperature sensing probe; 63. kneading blocks; 64. a pin; 65. clamping the column; 7. a sealing block; 8. cleaning the assembly; 81. a guide bar; 82. a pressing block; 83. a third spring; 84. a fixing ring; 85. a guide block; 86. a first connecting rod; 87. a second connecting rod; 88. a sleeve; 89. a fourth spring; 810. cleaning the block; 9. a through groove; 10. a limiting block; 11. a chuck; 12. a card slot; 13. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution:

a macromolecule PTC temperature sensor comprises a shell 1, wherein springs I3 are symmetrically and fixedly connected to the left side and the right side of the inner surface of the shell 1, the other ends of the springs I3 are fixedly connected with a fixing mechanism 5, and a fixing assembly 2 is fixedly connected to the position, close to the right end, of the outer surface of the shell 1;

the sensor body 6 is arranged in the fixing mechanism 5, the connecting pipe 61 is fixedly connected to the outer surface of the left end of the sensor body 6, the temperature sensing probe 62 is fixedly connected to the left end of the connecting pipe 61, the kneading block 63 is fixedly connected to the outer surface of the right end of the sensor body 6, the pins 64 are symmetrically arranged on the outer surface of the right side of the sensor body 6 at the front side and the rear side of the kneading block 63, the clamping column 65 is fixedly connected to the position of the outer surface of the upper end of the sensor body 6 at the right end, the sealing block 7 is arranged on the outer surface of the right side of the shell 1 and is mutually matched and clamped with the sealing block 7, the pins 64 penetrate through the sealing block 7 and extend to the outside to be electrically connected with the control system, the cleaning component 8 is arranged on the left side of the shell 1, the fixing mechanism 5 and the cleaning component 8 are mutually matched to work, so that the sensor body 6 can be well fixed, can effectively clean the vibration plate, can greatly reduce the damage caused by the vibration and prolong the service life of the vibration plate.

By adopting the technical scheme, when in use, the sealing block 7 is opened, the sensor main body 6 is plugged into the fixing mechanism 5 to fix the sensor main body 6, the temperature sensing probe 62 penetrates through the shell 1 and extends to the outside of the shell to perform temperature sensing work, the sealing block 7 is closed to seal the shell 1, a threaded hole is formed in the proper position of the outer wall of the motor and is matched with the fixing component 2, so that the temperature sensing probe and the fixing component are in threaded connection and sealing, the position of the sensor is fixed, the temperature sensing probe 62 on the left side of the sensor extends into the motor, the pin 64 is electrically connected with the control system, the temperature sensing probe 62 normally works, the temperature inside the motor is monitored in real time, once the temperature is too high, a signal is sent to make the motor suddenly stop, the spring I3 is arranged, the vibration of the sensor inside the fixing mechanism 5 brought by the motor is greatly reduced, the damage to the sensor is reduced, and the service life of the sensor is prolonged, when the sensor damages, only need open sealed piece 7, can be convenient take sensor main part 6 out, maintain it and change, saved a large amount of manpower and materials, and after the sensor used for a long time, user's accessible control clearance subassembly 8 cleared up temperature sensing probe 62, guaranteed temperature sensing probe 62's sensitivity, can carry out normal monitoring to motor inside temperature.

As an embodiment of the present invention, as shown in fig. 2, the first springs 3 are spiral springs, and the number of the first springs is two, and a buffer rubber ring 4 is fixedly connected between the inner surface of the housing 1 and the first springs 3.

Through adopting above-mentioned technical scheme for two sets of springs 3 can carry out effectual support to fixed establishment 5, can also be at the during operation, transmit the vibrations for sensor main part 6 when reducing the motor vibrations, reduce the harm to the sensor, have guaranteed the normal work of sensor, are provided with simultaneously that cushion rubber circle 4 can avoid sensor

main part

6 and 1 inner wall of shell to collide, the effectual sensor that has protected.

As an embodiment of the present invention, as shown in fig. 2, the fixing assembly 2 includes a fixing block 21, a thread 22, and a guide groove 23;

the position fixedly connected with fixed block 21 that the surface of shell 1 is close to the right-hand member, and it is T type structural design, screw thread 22 has been seted up to the surface left end of fixed block 21, the position that the left side surface of fixed block 21 is close to screw thread 22 is provided with rubber seal, guide way 23 has been seted up to the position that the right side surface of fixed block 21 is close to the upper end.

Through adopting above-mentioned technical scheme, set up the screw hole that matches each other with screw thread 22 on the motor casing, and set up screw thread 22 on the fixed block 21, make its both match each other, rotate fixed block 21, can effectually fix fixed block 21, stretch into the inside and fix its position of motor with the temperature sensing probe 62 of sensor, through being provided with rubber seal, can improve the leakproofness between fixed block 21 and the motor body, and then improved the protection level of motor.

As an embodiment of the present invention, as shown in fig. 2 and 4, the fixing mechanism 5 includes a fixing cylinder 51, a second spring 52, and a limiting groove 53;

the first spring 3 is close to the fixed cylinder 51 fixedly connected with one end of the center of the shell 1, the second spring 52 is fixedly connected with the left end of the inner surface of the fixed cylinder 51, the right end of the second spring 52 is in mutual contact with the sensor main body 6 and is sleeved on the outer surface of the connecting pipe 61, a limiting groove 53 is formed in the position, close to the upper end, of the outer surface of the fixed cylinder 51, and the limiting groove 53 and the clamping column 65 are matched and clamped with each other.

Through adopting the above-mentioned technical scheme, the user holds between the fingers piece 63 with the hand, stretch into inside the solid fixed cylinder 51 with sensor main part 6, make card post 65 block advance the inside left branch removal of spacing groove 53, sensor main part 6 left end can earlier with two 52 contacts of spring, continue to remove and can extrude two 52 of spring, when card post 65 gets into the leftmost end of spacing groove 53, clockwise rotation sensor main part 6, drive card post 65 along spacing groove 53 clockwise rotation, when moving to the top, slowly release and hold between the fingers piece 63, under the spring action of two 52 of spring, can drive sensor main part 6 and remove to the right side, card post 65 removes to the right side thereupon and spacing groove 53 mutual block, the position of fixing sensor main part 6, it is extremely convenient to make sensor main part 6 dismantle the installation, be favorable to overhauing it, great reduction maintenance personal's intensity of labour.

As an embodiment of the present invention, as shown in fig. 4, the limiting groove 53 is designed to have an n-shaped structure, and one end thereof is communicated with the outer surface of the right end of the fixed cylinder 51.

Through adopting above-mentioned technical scheme, make card post 65 can get into the spacing groove 53 inside smoothly rather than matcing each other and swing joint, will block post 65 through the manpower and impel inside the spacing groove 53, clockwise rotation card post 65 to spacing groove 53 top again, utilize two 52 springs's elasticity to lock it inside spacing groove 53 automatically, make card post 65 can not remove left and break away from spacing groove 53, thereby the position of dead sensor main part 6 of lock, dismantle simple to operate, therefore, the clothes hanger is strong in practicability.

As an embodiment of the present invention, as shown in fig. 5, a chuck 11 is fixedly connected to the left side of the inner surface of the housing 1, a locking groove 12 is formed in the outer surface of the right side of the chuck 11, a locking block 13 is fixedly connected to a position, close to the left side, of the outer surface of the fixed cylinder 51, and the locking block 13 and the locking groove 12 are matched with each other.

Through adopting above-mentioned technical scheme, when sensor main part 6 is at the inside leftward movement of solid fixed cylinder 51, because the elasticity of spring 3, gu fixed cylinder 51 position rocks easily, make gu fixed cylinder 51 also can follow leftward movement, drive fixture block 13 leftward movement and draw-in groove 12 block of matcing each other, thereby can fix solid fixed cylinder 51's position, when clockwise rotation sensor main part 6, gu fixed cylinder 51 position does not change, then can rotate spacing groove 53 peak smoothly with calorie post 65, it is fixed to carry out the block to the sensor, after piece 63 is held between the fingers in the release, gu fixed cylinder 51 resumes to original position under spring 3's effect, make spring 3 possess better cushioning effect to the inside sensor main part 6 of solid fixed cylinder 51.

As an embodiment of the present invention, as shown in fig. 6 and 7, the cleaning assembly 8 includes a guide rod 81, a pressing block 82, a spring three 83, a fixing ring 84, a guide block 85, a connecting rod one 86, a connecting rod two 87, a sleeve 88, a spring four 89, and a cleaning block 810;

the inner part of the guide groove 23 is movably connected with a guide rod 81, the right end of the guide rod 81 is fixedly connected with a pressing block 82, a spring third 83 is arranged between the outer surface of the guide rod 81, which is close to the fixing block 21, and the pressing block 82, a fixing ring 84 is fixedly connected with the left end of the guide rod 81, a first connecting rod 86 is fixedly connected with the upper end and the lower end of the outer surface of the left side of the fixing ring 84 in a symmetrical mode, a guide block 85 is fixedly connected with the upper end and the lower end of the outer surface of the shell 1, which are close to the left end, the first connecting rod 86 penetrates through the guide block 85 and is movably connected with the guide block 85, a second connecting rod 87 is fixedly connected with the outer surface of one side, which is close to the inner side of the temperature sensing probe 62, of the outer surface of the second connecting rod 87 is sleeved with a sleeve 88, and the two connecting rods are in T-shaped structural design and are mutually matched, and a spring fourth spring 89 is sleeved between the outer surface of the second connecting rod 87, which is close to the sleeve 88 and the first connecting rod 86, the lower extreme fixedly connected with clearance piece 810 of sleeve 88, the quantity of clearance piece 810 is two sets of, and is two sets of clearance piece 810 is arc structural design and matches each other with temperature-sensing probe 62.

Through adopting above-mentioned technical scheme, when needs clear up temperature sensing probe 62, only need press the pressing block 82 to the left side, extrusion spring three 83, drive guide bar 81 and move left, and then drive solid fixed ring 84 and move to the left side, the connecting rod 86 of fixed connection therewith moves left along guide block 85 internal surface thereupon, drive connecting rod two 87, sleeve 88 and fixed connection's cleaning block 810 move to the left side, cleaning block 810 matches each other for arc structural design and temperature sensing probe 62, then can carry out effectual clearance to the greasy dirt and the impurity on temperature sensing probe 62 surface, the good sensitivity of temperature sensing probe 62 has been guaranteed, make it can carry out normal monitoring to the inside temperature of motor.

As an embodiment of the present invention, as shown in fig. 7, a through groove 9 is formed on the outer surface of the left side of the sleeve 88 at a position close to the cleaning block 810, a position of the outer surface of the left side of the housing 1 corresponding to the through groove 9 is fixedly connected with a limiting block 10, the limiting block 10 penetrates through the through groove 9, and the limiting block 10 and the through groove 9 are both in an inclined structural design, and are matched with each other and slidably connected.

Through adopting above-mentioned technical scheme, when sleeve 88 moves to the left side, because stopper 10 is the slope structural design, under the effect of spring four 89 elasticity, can drive sleeve 88 and move to being close to temperature sensing probe 62 one side direction, until its both mutual contacts, when continuing to move left, can carry out effectual clearance to temperature sensing probe 62 surface, when the user is released press block 82, under the effect of spring three 83 elasticity, can make guide bar 81 move to the right, thereby drive sleeve 88 and move to the right through a series of structural component such as solid fixed ring 84, under stopper 10's effect, sleeve 88 can move to the direction of keeping away from temperature sensing probe 62, break away from each other with it, avoid both contacts to produce the influence to temperature sensing probe 62's sensitivity, guaranteed its normal work, overall structure is simple, therefore, the clothes hanger is strong in practicability.

The working principle is as follows: when the sensor is used, the sealing block 7 is opened, a user holds the holding block 63 with a hand, the sensor main body 6 extends into the fixed cylinder 51, the clamping column 65 is clamped into the limiting groove 53 to move leftwards, the left end of the sensor main body 6 is firstly contacted with the second spring 52 and continuously moves to extrude the second spring 52, when the clamping column 65 enters the leftmost end of the limiting groove 53, the sensor main body 6 is clockwise rotated to drive the clamping column 65 to clockwise rotate along the limiting groove 53, when the clamping column moves to the topmost end, the holding block 63 is slowly released, under the elastic force action of the second spring 52, the sensor main body 6 is driven to move rightwards, the clamping column 65 moves rightwards along with the clamping groove 53 to be clamped with the limiting groove 53, the position of the sensor main body 6 is fixed, the sensor main body 6 is extremely convenient to detach and mount, the sensor main body is favorable for overhauling, the sensor main body labor intensity of maintenance personnel is greatly reduced, when the sensor main body 6 moves leftwards in the fixed cylinder 51, because of the elasticity of the first spring 3, the position of the fixed cylinder 51 is easy to shake, so that the fixed cylinder 51 can also move leftwards to drive the clamping block 13 to move leftwards to be matched and clamped with the clamping groove 12, thereby fixing the position of the fixed cylinder 51, when the sensor body 6 is rotated clockwise, the position of the fixed cylinder 51 is not changed, the clamping column 65 can be smoothly rotated to the highest point of the limiting groove 53 to clamp and fix the sensor, after the pinching block 63 is released, the fixed cylinder 51 is restored to the original position under the action of the first spring 3, so that the first spring 3 has a good damping effect on the sensor body 6 in the fixed cylinder 51, the first spring 3 is a volute spring, when in work, the vibration transmitted to the sensor body 6 when a motor vibrates can be reduced, the damage to the sensor is reduced, the normal work of the sensor is ensured, and meanwhile, the buffer rubber ring 4 is arranged to avoid the collision between the sensor body 6 and the inner wall of the shell 1, the sensor is effectively protected, the outer wall of the motor is provided with threads matched with the threads 22, the threads are matched with each other, the fixed block 21 is rotated, the fixed block 21 can be effectively fixed, the temperature-sensitive probe 62 of the sensor extends into the motor and fixes the position of the temperature-sensitive probe, the sealing performance between the fixed block 21 and the motor body can be improved by arranging the rubber sealing ring, the protection grade of the motor is further improved, the sealing block 7 is closed, the pin 64 penetrates through the sealing block 7 and is electrically connected with the control system, the temperature-sensitive probe 62 normally works, the temperature inside the motor is monitored in real time, once the temperature is overhigh, the motor is suddenly stopped by sending a signal, when the temperature-sensitive probe 62 needs to be cleaned, only the pressing block 82 is pressed leftwards, the third spring 83 is pressed to drive the guide rod 81 to move leftwards, the fixing ring 84 is driven to move leftwards, and the first connecting rod 86 fixedly connected with the first connecting rod moves leftwards along the inner surface of the guide block 85, the connecting rod II 87, the sleeve 88 and the cleaning block 810 fixedly connected with the sleeve 88 are driven to move towards the left side, when the sleeve 88 moves towards the left side, due to the inclined structural design of the limiting block 10, under the action of the elastic force of the spring IV 89, the sleeve 88 can be driven to move towards one side close to the temperature-sensitive probe 62 until the sleeve 88 and the temperature-sensitive probe 62 are contacted with each other, and when the user releases the pressing block 82, the guide rod 81 can move towards the right under the action of the elastic force of the spring III 83, so that the sleeve 88 is driven to move towards the right through a series of structural components such as the fixing ring 84, the sleeve 88 can move towards the direction far away from the temperature-sensitive probe 62 under the action of the limiting block 10 and is separated from the temperature-sensitive probe 62, the influence of the contact of the sleeve 88 and the temperature-sensitive probe 62 can be avoided, the normal work of the temperature-sensitive probe can be ensured, and the whole structure is simple, the practicability is strong.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A macromolecule PTC temperature sensor comprises a shell (1), and is characterized in that: the left side and the right side of the inner surface of the shell (1) are symmetrically and fixedly connected with a first spring (3), the other end of the first spring (3) is fixedly connected with a fixing mechanism (5), and a fixing component (2) is fixedly connected to the position, close to the right end, of the outer surface of the shell (1);

the sensor comprises a fixing mechanism (5), a sensor body (6) is arranged in the fixing mechanism (5), a connecting pipe (61) is fixedly connected to the outer surface of the left end of the sensor body (6), a temperature sensing probe (62) is fixedly connected to the left end of the connecting pipe (61), a pinching block (63) is fixedly connected to the outer surface of the right end of the sensor body (6), pins (64) are symmetrically arranged on the front side and the rear side of the outer surface of the right side of the sensor body (6) close to the pinching block (63), a clamping column (65) is fixedly connected to the position, close to the right end, of the outer surface of the upper end of the sensor body (6), a sealing block (7) is arranged on the outer surface of the right side of a shell (1), the sealing block and the sealing block are matched and clamped with each other, the pins (64) penetrate through the sealing block (7) and extend to the outside to be electrically connected with a control system, and a cleaning assembly (8) is arranged on the left side of the shell (1), fixing mechanism (5) and clearance subassembly (8) work of matcing each other can carry out good fixed to sensor main part (6), can carry out effectual clearance to it again, and the harm that can reduce vibrations greatly and bring for it prolongs its life.

2. A polymeric PTC temperature sensor according to claim 1, wherein: the first springs (3) are volute springs, the number of the first springs is two, and the inner surface of the shell (1) is close to the space between the first springs (3) and is fixedly connected with a buffer rubber ring (4).

3. A polymeric PTC temperature sensor according to claim 1, wherein: the fixing component (2) comprises a fixing block (21), threads (22) and a guide groove (23);

the surface of shell (1) is close to position fixedly connected with fixed block (21) of right-hand member, and it is T type structural design, screw thread (22) have been seted up to the surface left end of fixed block (21), the position that the left side surface of fixed block (21) is close to screw thread (22) is provided with rubber seal, guide way (23) have been seted up to the position that the right side surface of fixed block (21) is close to the upper end.

4. A polymeric PTC temperature sensor according to claim 1, wherein: the fixing mechanism (5) comprises a fixing barrel (51), a second spring (52) and a limiting groove (53);

spring one (3) are close to shell (1) center one end fixedly connected with solid fixed cylinder (51), gu fixed cylinder (51) internal surface left end fixedly connected with spring two (52), spring two (52) right-hand member and sensor main part (6) contact each other, and it cup joints at connecting pipe (61) surface, gu the surface of fixed cylinder (51) is close to the position of upper end and has seted up spacing groove (53), spacing groove (53) and calorie of post (65) match the block each other.

5. A polymeric PTC temperature sensor according to claim 4, wherein: the limiting groove (53) is designed to be of an n-shaped structure, and one end of the limiting groove is communicated with the outer surface of the right end of the fixed cylinder (51).

6. A polymeric PTC temperature sensor according to claim 1, wherein: the internal surface left side fixedly connected with chuck (11) of shell (1), draw-in groove (12) have been seted up to the right side surface of chuck (11), the surface of solid fixed cylinder (51) is close to left position fixedly connected with fixture block (13), fixture block (13) and draw-in groove (12) match each other.

7. A polymeric PTC temperature sensor according to claim 1, wherein: the cleaning assembly (8) comprises a guide rod (81), a pressing block (82), a spring III (83), a fixing ring (84), a guide block (85), a connecting rod I (86), a connecting rod II (87), a sleeve (88), a spring IV (89) and a cleaning block (810);

the inner part of the guide groove (23) is movably connected with a guide rod (81), the right end of the guide rod (81) is fixedly connected with a pressing block (82), a spring III (83) is arranged between the outer surface of the guide rod (81) close to a fixing block (21) and the pressing block (82), the left end of the guide rod (81) is fixedly connected with a fixing ring (84), the upper end and the lower end of the outer surface of the left side of the fixing ring (84) are symmetrically and fixedly connected with a connecting rod I (86), the upper end and the lower end of the outer surface of the shell (1) close to the position of the left end are fixedly connected with a guide block (85), the connecting rod I (86) penetrates through the guide block (85), the two are movably connected, the outer surface of one side of the connecting rod I (86) close to a temperature sensing probe (62) is fixedly connected with a connecting rod II (87), and the outer surface of the connecting rod II (87) is sleeved with a sleeve (88), and both of them are T type structural design and match each other, the outer surface of the second connecting rod (87) is close to and is sleeved with a fourth spring (89) between the sleeve (88) and the first connecting rod (86), and the lower end of the sleeve (88) is fixedly connected with a cleaning block (810).

8. A polymeric PTC temperature sensor according to claim 7, wherein: the number of the cleaning blocks (810) is two, and the two cleaning blocks (810) are both designed to be arc-shaped structures and are matched with the temperature sensing probe (62).

9. A polymeric PTC temperature sensor according to claim 7, wherein: logical groove (9) have been seted up to the position that sleeve (88) left side surface is close to clearance piece (810), the left side surface of shell (1) corresponds position fixedly connected with stopper (10) that lead to groove (9), stopper (10) run through logical groove (9).

10. A polymeric PTC temperature sensor according to claim 9, wherein: the limiting blocks (10) and the through grooves (9) are in inclined structural design, matched with each other and connected in a sliding mode.