NTC temperature sensor

Abstract

The utility model discloses an NTC temperature sensor, and belongs to the field of temperature sensors. The NTC temperature sensor comprises a temperature sensing assembly, the temperature sensing assembly is connected with one end of a transmission wire through a Dumet wire, the outer surface of the temperature sensing assembly is connected with a packaging material, the other end of the transmission wire is connected with a plug-in assembly, the tail end of the plug-in assembly is provided with a plug-in terminal part, and the plug-in terminal part is connected with the packaging material. The packaging material comprises a core packaging waterproof combination layer arranged on the outer surface of the temperature sensing assembly, a polymer attachment layer and a sleeve protection piece layer. According to the utility model, through the optimized design of the plug-in assembly, the stability of the connection area of the plug-in assembly and the vehicle master control assembly can be improved, disconnection can be prevented, the anti-seismic property of the connection part of the plug-in assembly and the vehicle master control system is good, poor contact is avoided, and the temperature sensing signal transmission stability is good.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, and in particular to an NTC temperature sensor. Background Technology

[0002] An NTC temperature sensor is a thermistor whose resistance decreases as temperature increases. Currently, NTC temperature sensors are widely used in components of electric motors and electronic control systems in new energy vehicles. The resistance of the thermistor ceramic core in an NTC temperature sensor decreases rapidly with rising temperature. By measuring the resistance of the thermistor ceramic core and applying Ohm's law and other relevant formulas, the ambient temperature of the NTC temperature sensor's thermistor ceramic core can be deduced. This allows for real-time monitoring of the temperature of components in electric motors or automotive electronic control systems, reducing malfunctions caused by improper temperature control.

[0003] Existing NTC temperature sensors have several drawbacks: poor waterproof and dustproof performance at the connection point between the sensor and the vehicle's central control system, and they are prone to disconnection. Sometimes, poor contact occurs at the connection point between the connector end and the central control system, resulting in unstable transmission of the sensing signal. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the use of existing NTC temperature sensors, and to propose an NTC temperature sensor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An NTC temperature sensor includes a temperature sensing component connected to one end of a transmission wire via a Dummie wire. An encapsulation material is attached to the outer surface of the area where the temperature sensing component connects to the Dummie wire. The other end of the transmission wire is connected to a connector component with a connector terminal at its end. The encapsulation material includes a core-encapsulated waterproof composite layer on the outer surface of the area where the temperature sensing component connects to the Dummie wire. The encapsulation material also includes a polymer bonding layer on the outer surface of the core-encapsulated waterproof composite layer, a polymer bonding layer on the outer surface of the Dummie wire, and a polymer bonding layer on the outer surface of the connection end between the Dummie wire and the transmission wire. A sheathing layer is fitted over the polymer bonding layer. The sensor further includes:

[0007] A sealing element, wherein the sealing element is mounted on the outside of the connection between the plug assembly and the transmission wire.

[0008] The plug-in assembly consists of four parts connected sequentially from front to back: a side-foldable connector, a connecting piece, a snap-fit ​​piece, and a plug-in terminal.

[0009] The foldable connector can be folded and attached to the outside of the sealing element.

[0010] One end of the connector is connected to the joint piece, and the other end of the connector is connected to the insert piece.

[0011] The end of the insert is connected to a plug-in terminal with a smooth outer surface.

[0012] Furthermore, the sealing element has a through hole in the middle, through which the transmission wire passes and connects to the connector in the plug assembly.

[0013] The sealing component is composed of a rubber sleeve, an annular sealing part, and a limiting sleeve connecting part. The annular sealing part is connected to the outer surface of the rubber sleeve, and the limiting sleeve connecting part is integrated with the rubber sleeve and located at the end of the rubber sleeve.

[0014] Preferably, a transmission wire is installed inside the limiting sleeve series connection part, and the outside of the limiting sleeve series connection part can be tightly connected to the plug-in assembly through a laterally foldable connector.

[0015] The annular sealing portion can be a hollow cone shape.

[0016] Preferably, the inner side of the connector is provided with a serrated body.

[0017] Furthermore, the connector has foldable semi-circular metal sheets on both sides, which can be folded and tightly connected with the metal wires in the transmission wire.

[0018] Preferably, the inner side of the semi-circular metal sheet is provided with a toothed ring.

[0019] Furthermore, the insert includes a rectangular card block connected to the connector, and elastic pieces are symmetrically connected to both sides of the rectangular card block.

[0020] Preferably, the rectangular card block has a perforation on its outer side, and a triangular frame is attached to the elastic sheet.

[0021] Furthermore, the plug-in terminal portion can be a sheet-like body with a certain length and a smooth surface, and the end of the sheet-like body is provided with a trapezoidal ramp area;

[0022] The sheet-like body can be a continuous H-shape.

[0023] Furthermore, the polymer bonding layer can be replaced with a Teflon component.

[0024] Compared with the prior art, the present invention provides an NTC temperature sensor with the following advantages:

[0025] 1. This NTC temperature sensor, through the combined design of the plug assembly and the sealing component, can achieve good waterproof and dustproof performance at the connection between the NTC temperature sensor and the vehicle's main control system. The combination of the rubber sleeve and the annular sealing part in the sealing component can form a multi-level composite waterproof and dustproof assembly, ensuring that the connection between the plug assembly of the NTC temperature sensor and the vehicle's main control system is both dustproof and waterproof.

[0026] 2. By utilizing the foldable connector on the plug assembly of the NTC temperature sensor, it is ensured that the connector and the sealing body are tightly folded together, allowing the transmission wire inserted into the through hole of the sealing body to be tightly connected to the sealing body. The connector on the plug assembly has foldable semi-circular metal plates on both sides, which can be folded and tightly connected to the metal wires in the transmission wire. The combination design of the semi-circular metal plates and the connector ensures that the metal wires in the transmission wire are firmly pressed onto the connector of the plug assembly, ensuring good connection stability between the transmission wire and the plug assembly and preventing it from easily coming loose.

[0027] 3. By providing a rectangular locking block on the insertion piece of the connector component in the NTC temperature sensor, and attaching an elastic sheet to the rectangular locking block, when the insertion piece of the connector component is inserted into the connection between the NTC temperature sensor and the vehicle's main control system, the elastic sheet on the rectangular locking block will first be pressed inward by the insertion pressure, smoothly passing into the connection between the NTC temperature sensor and the vehicle's main control system. Then, when the insertion pressure disappears or decreases, the elastic sheet on the rectangular locking block will spring back and open inside the connection between the NTC temperature sensor and the vehicle's main control system. At this time, the connection between the insertion piece of the connector component in the NTC temperature sensor and the vehicle's main control system will have the elastic sheet open and locked, ensuring that the connection between the connector component of the NTC temperature sensor and the vehicle's main control system is not prone to disengagement.

[0028] 4. The connector of the NTC temperature sensor has a smooth, long sheet-like body on its connector terminal. This sheet-like body allows for a larger contact area between the connector of the NTC temperature sensor and the vehicle's central control system. Furthermore, the sheet-like body can be designed as a single H-shape, further increasing the contact area between the connector of the NTC temperature sensor and the vehicle's central control system. This prevents poor contact between the end of the connector of the NTC temperature sensor and the connection area of ​​the vehicle's central control system, ensuring good stability of the NTC temperature sensor's transmitted sensing signal. Attached Figure Description

[0029] Figure 1 This is a front view schematic diagram of the overall structure of an NTC temperature sensor proposed in this utility model;

[0030] Figure 2This is a schematic diagram of the overall structure of the temperature sensing component of an NTC temperature sensor proposed in this utility model after lateral cross-section.

[0031] Figure 3 for Figure 2 An enlarged schematic diagram of point A of an NTC temperature sensor proposed in this utility model;

[0032] Figure 4 This is a side cross-sectional view of the temperature sensing component of an NTC temperature sensor proposed in this utility model, where the polymer bonding layer is replaced with a Teflon component.

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of point B of an NTC temperature sensor proposed in this utility model;

[0034] Figure 6 This is a schematic diagram of the connection structure between a transmission wire and a plug-in component in an NTC temperature sensor proposed in this utility model.

[0035] Figure 7 This is a schematic diagram of the sealing component in an NTC temperature sensor proposed in this utility model;

[0036] Figure 8 This is a schematic diagram of the lateral cross-sectional structure of the temperature sensing component in an NTC temperature sensor proposed in this utility model;

[0037] Figure 9 This is a schematic diagram of the connection structure between a transmission wire, a sealing component and a plug assembly in an NTC temperature sensor proposed in this utility model.

[0038] Figure 10 This is a schematic diagram showing the connection between the connector and the sealing component after the connector, insert, and plug terminal of the plugging assembly in an NTC temperature sensor proposed in this utility model have been cut off.

[0039] Figure 11 This is a schematic diagram showing the connection between the serrated body and the sealing member on the inner side of the connector of the plug assembly in an NTC temperature sensor proposed in this utility model.

[0040] Figure 12 This is a schematic diagram of the annular sealing portion of an NTC temperature sensor proposed in this utility model, when viewed from top to bottom, showing the connection of a transmission wire, a sealing member, and a plug assembly.

[0041] In the diagram: 1. Temperature sensing component; 2. Transmission wire; 3. Encapsulation material; 4. Plug-in terminal; 5. Core encapsulation waterproof composite layer; 6. Polymer bonding layer; 7. Sleeve protective layer; 8. Sealing plug; 9. Connector; 10. Connector; 11. Insert card; 12. Plug-in assembly; 13. Rubber gasket; 14. Annular sealing part; 15. Limiting sleeve series connection part; 16. Rectangular card block; 17. Elastic sheet; 18. Triangular frame; 19. Toothed ring body; 20. Serrated body; 21. Teflon part. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0043] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] Example 1:

[0045] Reference Figures 1 to 8 An NTC temperature sensor includes a temperature sensing component 1, which includes a thermal sensing chip. Alloy electrodes are connected to both sides of the thermal sensing chip. Dummey wires are connected to the surfaces of the alloy electrodes, and the other ends of the Dummey wires are connected to metal wires within a transmission conductor 2 via metal clamps.

[0046] It should be explained in detail that: the temperature sensing component is connected to one end of the transmission wire 2 via a DuMei wire; the outer surface of the area where the temperature sensing component 1 connects to the DuMei wire is covered with an encapsulation material 3; the other end of the transmission wire 2 is connected to a plug assembly 12; the end of the plug assembly 12 has a plug terminal portion 4; the encapsulation material 3 includes a core-encapsulated waterproof composite layer 5 disposed on the outer surface of the area where the temperature sensing component 1 connects to the DuMei wire; the encapsulation material 3 also includes a polymer bonding layer 6 disposed on the outer surface of the core-encapsulated waterproof composite layer 5, a polymer bonding layer 6 on the outer surface of the DuMei wire, and a polymer bonding layer 6 on the outer surface of the connection end of the DuMei wire and the transmission wire 2; a sleeve protective layer 7 is sleeved on the outside of the polymer bonding layer 6; the polymer bonding layer 6 and the sleeve protective layer 7 have the characteristics of heat resistance, waterproofing, and sealing; and also includes a sealing plug 8, which is installed on the outside of the connection point between the plug assembly 1 and the transmission wire 2.

[0047] The plug-in assembly 12 is composed of four parts connected from front to back: a laterally foldable connector 9, a connector 10, a plug-in card 11, and a plug-in terminal 4. The foldable connector 9 can be folded and connected to the outside of the sealing member 8. One end of the connector 10 is connected to the connector 9, and the other end of the connector 10 is connected to the plug-in card 11. The end of the plug-in card 11 is connected to the plug-in terminal 4 with a smooth outer surface.

[0048] By utilizing the foldable connector 9 on the plug assembly 12 of the NTC temperature sensor, it is ensured that the connector 9 and the sealing body 8 are tightly connected by folding, so that the transmission wire 2, which is inserted into the through hole of the sealing body 8, can be tightly connected to the sealing body 8. The connector 10 on the plug assembly 12 has foldable semi-circular metal pieces on both sides. The semi-circular metal pieces can be folded and tightly connected to the metal wires in the transmission wire 2. By using the combination design of the semi-circular metal pieces and the connector 10, the metal wires in the transmission wire 2 can be firmly pressed and connected to the connector 10 of the plug assembly 12, ensuring that the connection between the transmission wire 2 and the plug assembly 12 is stable and not easy to detach.

[0049] The outer side of the transmission conductor 2 can be fitted with a heat-resistant protective sleeve, which can improve the protection performance of the outer surface of the transmission conductor 2.

[0050] Among them, the core-encapsulated waterproof composite layer 5 is connected to the outside of the Dumei wire and the core connection area. The core-encapsulated waterproof composite layer 5 has three layers from the inside to the outside: a ceramic encapsulation material layer, a polymer encapsulation material layer and a waterproof coating material layer.

[0051] An NTC temperature sensor has two DuMee wires connected to the two sides of the temperature sensing component 1. The other ends of the two DuMee wires are connected to two corresponding transmission wires 2. One end of the transmission wire 2 is connected to the DuMee wire, and the other end of the transmission wire 2 is connected to the plug assembly 12. The plug assembly 12 has a plug terminal 4 at the end. The plug terminal 4 has a plug card 11 at the front end. The plug card 11 has a connector 10 at the front end. The connector 10 has a connector 9 at the front end. The connector 9 is connected to the sealing body 8. The sealing body 8 has a through hole in the middle. The transmission wire 2 passes through the through hole on the sealing body 8 and connects to the connector 10 in the plug assembly 12.

[0052] The sealing component 8 is composed of a rubber sleeve 13, an annular sealing part 14, and a limiting sleeve connecting part 15. The annular sealing part 14 is connected to the outer surface of the rubber sleeve 13, and the limiting sleeve connecting part 15 is integrated with the rubber sleeve 13. The limiting sleeve connecting part 15 is located at the end of the rubber sleeve 13. A transmission wire 2 is installed inside the limiting sleeve connecting part 15, and the outside of the limiting sleeve connecting part 15 is folded and tightly connected to the plugging assembly 12 through a laterally foldable connector 9.

[0053] The two transmission wires 2 are fitted with heat-resistant protective sleeves, which enable the two transmission wires 2 to form a whole. The NTC temperature sensor can be connected to the vehicle's main control system via the plug-in component 12 at the other end of the transmission wires 2. The signal receiving end of the vehicle's main control system can transmit the resistance value signal of the temperature sensing component 1 in the NTC temperature sensor to the information receiving component of the vehicle's main control system. The monitoring and display platform in the vehicle's main control system then displays the accurately calculated sensed temperature value. The NTC temperature sensor can be used to monitor the temperature of the motor and other electronic control components of the vehicle, preventing the motor or the vehicle's electronic control system from malfunctioning due to unreasonable temperature when the motor and other corresponding electronic control system components are installed in the vehicle.

[0054] The multi-layered annular sealing portion 14 in the sealing component 8 can enhance the sealing performance at the connection between the NTC temperature sensor plug assembly 12 and the vehicle's main control system, preventing dust, powder, water, etc. from entering; the combination of the rubber gasket 13 and the annular sealing portion 14 in the sealing component 8 can form a multi-layered composite waterproof and dustproof assembly, ensuring that the connection between the NTC temperature sensor plug assembly 12 and the vehicle's main control system is both dustproof and waterproof;

[0055] The connector 10 has foldable semi-circular metal pieces on both sides. The semi-circular metal pieces can be folded and tightly connected with the metal wires in the transmission wire 2. The two semi-circular metal pieces are folded and squeezed to connect with the metal wires in the transmission wire 2. The two semi-circular metal pieces are used to fix the metal wires in the wire 2, so that the signal of the transmission wire 2 can be stably transmitted to the plug terminal 4 at the end of the plug assembly 12.

[0056] One end of the insert 11 is connected to a smooth sheet. The semi-circular metal sheet can be folded inward to squeeze and fix the metal wire of the transmission wire 2 inside, thereby forming temperature transmission of the sensing signal of the NTC temperature sensor. The plug terminal 4 can be a sheet with a certain length and a smooth surface. The sheet can be a metal body. The end of the sheet is provided with a trapezoidal ramp area. The sheet is flat and has a certain length, which can increase the contact area at the connection point between the plug assembly 12 of the NTC temperature sensor and the vehicle control system, and increase the stability of the vehicle control system receiving electrical signals.

[0057] The sheet-like body allows for a larger contact area between the NTC temperature sensor's connector 12 and the vehicle's central control system. Furthermore, the sheet-like body can be designed as a continuous H-shape, further increasing the contact area between the NTC temperature sensor's connector 12 and the vehicle's central control system. This prevents poor contact between the end of the NTC temperature sensor's connector 12 and the connection area of ​​the vehicle's central control system, ensuring good stability of the NTC temperature sensor's transmitted sensing signal.

[0058] Example 2:

[0059] Reference Figures 9-12 Based on Embodiment 1, the difference is that: the inner side of the connector 9 is provided with a serrated body 20, which can make the connection stability between the connector 9 and the limiting sleeve connection part 15 of the sealing member 8 better and avoid the separation between them; the serrated body 20 on the inner side of the connector 9 is in the shape of continuous serrations, which can increase the connection between the connector 9 and the limiting sleeve connection part 15.

[0060] The connector 10 has foldable semi-circular metal pieces on both sides. The semi-circular metal pieces can be folded and tightly connected with the metal wires in the transmission wire 2. The inner side of the semi-circular metal pieces is provided with toothed rings 19. The toothed rings 19 on the inner side of the two semi-circular metal pieces can be folded and squeezed with the metal wires in the transmission wire 2. The toothed rings 19 are easy to deform, which can increase the contact area between the metal wires in the transmission wire 2 and the connector 10, and can improve the stability of the transmission sensing signal transmitted by the transmission wire 2 in the NTC temperature sensor.

[0061] The plug-in terminal 4 can be a sheet-like body with a certain length and a smooth surface. The end of the sheet-like body is provided with a trapezoidal ramp area. The sheet-like body can be a continuous H-shape. The continuous H-shape can make the surface area of ​​the sheet-like body larger. When the NTC temperature sensor is connected to the vehicle's main control system, the continuous H-shaped sheet-like body further increases the contact area at the connection point between the plug-in assembly 12 of the NTC temperature sensor and the vehicle's main control system. This can avoid poor contact between the end of the plug-in assembly 12 of the NTC temperature sensor and the connection area of ​​the vehicle's main control system, ensuring good stability of the NTC temperature sensor's transmission of sensing signals. In addition, the continuous H-shaped sheet-like body is easier to connect with the vehicle's main control system and is less prone to relative shaking, improving the plug-in stability of the plug-in terminal 4 at the connection point of the vehicle's main control system.

[0062] In addition, the annular sealing part 14 in the sealing part 8 can also be a hollow cone. The annular sealing part 14 of the hollow cone can provide a buffer and has a shock absorption and anti-vibration buffer function at the connection between the plug assembly 12 and the vehicle control system, so that the connection between the plug assembly 12 and the vehicle control system has good anti-vibration performance.

[0063] One end of the connector 10 is connected to a card insert 11. The card insert 11 includes a rectangular card block 16 connected to the connector 10. Elastic pieces 17 are symmetrically connected to both sides of the rectangular card block 16.

[0064] The elastic sheet 17 is connected to a triangular frame 18. The combination of the elastic sheet 17 and the triangular frame 18 enables the plug-in component 11 in the plug-in assembly to form a snap-fit ​​with the connection point of the vehicle's main control system, thereby stably connecting the plug-in assembly 12 of the NTC temperature sensor to the connection point of the vehicle's main control system. The rectangular block 16 has a through hole on its outer side. The elastic sheet 17 is connected to the triangular frame 18. Two deformable elastic sheets 17 are symmetrically connected to both sides of the rectangular block 16. The rectangular block 16 has a through hole on its side. The rectangular block 16 is plugged into the vehicle's main control system. The elastic sheets 17 on both sides can form a snap-fit ​​with the vehicle's main control system to fix the rectangular block 16. The through hole on its surface can increase the stability between the rectangular block 16 and the vehicle's main control system and improve the heat dissipation at this point.

[0065] In this NTC temperature sensor, the insertion component 12 has a rectangular locking block 16 on its insertion piece 11, and an elastic piece 17 is connected to the rectangular locking block 16. When the insertion piece 11 of the insertion component 12 is inserted into the connection between the NTC temperature sensor and the vehicle's main control system, the elastic piece 17 on the rectangular locking block 16 will first be pressed inward by the insertion pressure, smoothly passing into the connection between the NTC temperature sensor and the vehicle's main control system. Then, when the insertion pressure disappears or decreases, the elastic piece 17 on the rectangular locking block 16 will spring back and open inside the connection between the NTC temperature sensor and the vehicle's main control system. At this time, the elastic piece 17 will open and lock at the connection between the insertion piece 11 of the NTC temperature sensor and the vehicle's main control system, ensuring that the connection between the NTC temperature sensor's insertion component 12 and the vehicle's main control system is not easily disengaged.

[0066] Example 3:

[0067] Reference Figures 4-5 Based on Example 1, the difference is that when using this type of NTC temperature sensor under the condition of sensing 150°C to 220°C, the polymer bonding layer 6 needs to be replaced with Teflon part 21, which has high temperature resistance and is suitable for sensing the temperature of the internal area of ​​the motor.

[0068] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An NTC temperature sensor, comprising a temperature sensing component (1), wherein the temperature sensing component (1) is connected to one end of a transmission wire (2) via a Dumere wire, an encapsulation material (3) is attached to the outer surface of the connection area between the temperature sensing component (1) and the Dumere wire, and the other end of the transmission wire (2) is connected to a plug-in component (12), the plug-in component (12) having a plug-in terminal portion (4) at its end, the encapsulation material (3) comprising a core-encapsulated waterproof composite layer (5) disposed on the outer surface of the connection area between the temperature sensing component (1) and the Dumere wire, the encapsulation material (3) further comprising a polymer bonding layer (6) disposed on the outer surface of the core-encapsulated waterproof composite layer (5), a polymer bonding layer (6) on the outer surface of the Dumere wire, and a polymer bonding layer (6) on the outer surface of the connection end between the Dumere wire and the transmission wire (2), wherein a sheath protective layer (7) is sleeved on the outside of the polymer bonding layer (6), characterized in that, Also includes: A sealing element (8) is installed on the outside of the connection point between the plug assembly (12) and the transmission wire (2). The plug-in assembly (12) consists of four parts connected sequentially from front to back: a side-foldable connector (9), a connector (10), a plug-in clip (11), and a plug-in terminal (4). The foldable connector (9) can be folded and attached to the outside of the sealing member (8). One end of the connector (10) is connected to the connector (9), and the other end of the connector (10) is connected to the insert (11). The end of the insert (11) is connected to a plug-in terminal (4) with a smooth outer surface.

2. The NTC temperature sensor according to claim 1, characterized in that, The sealing member (8) has a through hole in the middle. The transmission wire (2) passes through the through hole on the sealing member (8) and connects to the connector (10) in the plug assembly (12). The sealing component (8) is composed of a rubber sleeve (13), an annular sealing part (14) and a limiting sleeve connecting part (15). The annular sealing part (14) is connected to the outer surface of the rubber sleeve (13), and the limiting sleeve connecting part (15) is integrated with the rubber sleeve (13). The limiting sleeve connecting part (15) is located at the end of the rubber sleeve (13).

3. An NTC temperature sensor according to claim 2, characterized in that, The transmission wire (2) is installed inside the limiting sleeve connection part (15), and the outside of the limiting sleeve connection part (15) is tightly connected to the plug assembly (12) by a laterally foldable connector (9). The annular sealing part (14) is a hollow cone.

4. An NTC temperature sensor according to claim 3, characterized in that, The inner side of the connector (9) is provided with a sawtooth body (20).

5. An NTC temperature sensor according to claim 1, characterized in that, The connector (10) has foldable semi-circular metal pieces on both sides, which can be folded and tightly connected with the metal wires in the transmission wire (2).

6. An NTC temperature sensor according to claim 5, characterized in that, The inner side of the semi-circular metal sheet is provided with a toothed ring (19).

7. An NTC temperature sensor according to claim 1, characterized in that, The insert (11) includes a rectangular card block (16) connected to the connector (10), and elastic pieces (17) are symmetrically connected to both sides of the rectangular card block (16).

8. An NTC temperature sensor according to claim 7, characterized in that, The rectangular card block (16) has a perforation on its outer side, and a triangular frame (18) is attached to the elastic sheet (17).

9. An NTC temperature sensor according to claim 1, characterized in that, The plug-in terminal (4) is a sheet-like body with a certain length and a smooth surface, and the end of the sheet-like body is provided with a trapezoidal ramp area; The sheet-like body is a continuous H-shape.

10. An NTC temperature sensor according to claim 1, characterized in that, The polymer bonding layer (6) can be replaced with a Teflon element (21).

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