NTC water temperature sensor

Abstract

The utility model discloses an NTC (Negative Temperature Coefficient) water temperature sensor, which belongs to the technical field of water temperature sensors and comprises an NTC thermistor used for measuring water temperature change, the NTC thermistor is arranged in an outer casing pipe, and a connecting mechanism used for being connected with external equipment is arranged in the outer casing pipe. The connecting mechanism comprises a first terminal inserted in the shell tube and a second terminal arranged beside the first terminal, the second terminal is inserted in the shell tube, the NTC thermistor is provided with a first pin and a second pin, the first pin is arranged in the shell tube, the second pin is arranged in the shell tube, the first pin is connected with the first terminal, and the second pin is connected with the second terminal. The device has the effects of being simple in structure and convenient to install and use.

Description

Technical Field

[0001] The utility model relates to the technical field of water temperature sensors, in particular to an NTC water temperature sensor. Background Art

[0002] Water temperature sensors are widely used in our daily lives. For example, in the process of manufacturing automobiles, the water temperature sensor can sense the change in resistance to infer the real-time operating status of the engine. When the temperature of the engine cooling water drops, the resistance value detected by the water temperature sensor will increase. Conversely, when the temperature rises, the resistance value will decrease. This data is captured and used by the ECU to calibrate the fuel injection amount and ignition timing to ensure stable and efficient operation of the engine. Existing water temperature sensors have a complex structure and a cumbersome installation process.

[0003] In view of the above-mentioned related technologies, it is urgent to design and develop an NTC water temperature sensor that uses an NTC thermistor to sense water temperature changes, has a simple structure, and is easy to install and use. Utility Model Content

[0004] In order to install and use a water temperature sensor, the present application provides an NTC water temperature sensor.

[0005] The NTC water temperature sensor provided in this application adopts the following technical solution:

[0006] An NTC water temperature sensor includes an NTC thermistor for measuring water temperature changes, wherein the NTC thermistor is partially disposed within a housing tube and partially disposed outside the housing tube. A connecting mechanism for connecting to an external device is disposed within the housing tube, wherein the connecting mechanism includes a first terminal inserted within the housing tube and a second terminal disposed adjacent to the first terminal, wherein the second terminal is inserted within the housing tube. The NTC thermistor has a first pin and a second pin, wherein the first pin is disposed within the housing tube and the second pin is disposed within the housing tube. The first pin is connected to the first terminal, and the second pin is connected to the second terminal.

[0007] By adopting the above technical solution, the NTC thermistor is partially arranged in the shell tube, the NTC thermistor is partially arranged outside the shell tube, the first terminal is inserted in the shell tube, the second terminal is inserted in the shell tube, the second terminal is arranged next to the first terminal, and there are pins one and two on the NTC thermistor, pin one is arranged in the shell tube, pin two is arranged in the shell tube, pin one is connected to the first terminal, and pin two is connected to the second terminal. When it is necessary to measure the water temperature change, the first terminal and the second terminal are connected to the external device, so that the NTC thermistor contacts the water source, which is convenient for detecting the water temperature change. The NTC water temperature sensor has a simple structure and is easy to install and use.

[0008] Preferably, a base is provided in the shell tube, the side of the base abuts against the inner wall of the mounting tube, the first terminal is inserted in the base, the first terminal extends out of the base, and the second terminal is inserted in the base, the second terminal extends out of the base.

[0009] By adopting the above technical solution, a base is provided in the outer shell tube, the side of the base abuts against the inner wall of the mounting tube, the first terminal is inserted into the base, the first terminal extends out of the base, and the second terminal is inserted into the base, the second terminal extends out of the base, thereby improving the installation stability of the first terminal and the second terminal.

[0010] Preferably, a first positioning column is provided on the bottom surface of the base, a second positioning column is provided next to the positioning column, and the second positioning column is provided on the bottom surface of the base.

[0011] By adopting the above technical solution, a positioning column 1 is provided on the bottom surface of the base, and a positioning column 2 is provided next to the positioning column. The positioning column 2 is provided on the bottom surface of the base. When using the NTC water temperature sensor, when the first terminal and the second terminal are connected to the external device, the positioning column 1 and the positioning column 2 are inserted into the positioning hole of the external device, thereby improving the stability of the connection between the NTC water temperature sensor and the external device.

[0012] Preferably, the shell tube is filled with hot melt adhesive, the hot melt adhesive is in contact with the side surface of the NTC thermistor, and the hot melt adhesive is in contact with the pin 1, pin 2, the first terminal, and the second terminal.

[0013] By adopting the above technical solution, the shell tube is filled with hot melt adhesive, the hot melt adhesive is adhered to the side surface of the NTC thermistor, and the hot melt adhesive is adhered to pin 1, pin 2, the first terminal, and the second terminal, thereby sealing the connection portion between the NTC thermistor and the first terminal and the second terminal, thereby improving the stability of the connection between the NTC thermistor and the first terminal and the second terminal.

[0014] Preferably, a protective end cap is threadedly sleeved on the end surface of the shell tube away from the first terminal and the second terminal, and the NTC thermistor is partially arranged in the protective end cap.

[0015] By adopting the above technical solution, a protective end cap is threadedly sleeved on the end face of the shell tube away from the first terminal and the second terminal, and the NTC thermistor is partially arranged in the protective end cap. When the NTC thermistor is not needed to detect water temperature changes, the protective end cap is screwed onto the shell tube, thereby reducing the possibility of the NTC thermistor being damaged by accidental bumps.

[0016] Preferably, a mounting block is provided on the side of the protective end cover, a mounting groove is provided on the side of the mounting block, a limiting groove is provided on the side wall of the mounting groove, a connecting rope is provided on the outer shell tube, a circular plate is provided on the connecting rope, a limiting ring is provided on the side of the circular plate, the circular plate is rotatably provided in the mounting groove, and the limiting ring is rotatably provided in the limiting groove.

[0017] By adopting the above technical solution, a mounting block is provided on the side of the protective end cover, a mounting groove is provided on the side of the mounting block, a limiting groove is provided on the side wall of the mounting groove, a connecting rope is provided on the outer shell tube, a circular plate is provided on the connecting rope, a limiting ring is provided on the side of the circular plate, the circular plate is rotatably provided in the mounting groove, the limiting ring is rotatably provided in the limiting groove, the protective end cover is connected to the outer shell tube through the limiting ring, the circular plate and the connecting rope, thereby improving the stability of the connection between the protective end cover and the outer shell tube.

[0018] Preferably, a protective tube is threadedly sleeved on the shell tube, the protective tube is communicated with the shell tube, the first terminal is arranged in the protective tube, and the second terminal is arranged in the protective tube.

[0019] By adopting the above technical solution, a protective tube is threadedly provided on the outer shell tube, the protective tube is connected to the outer shell tube, the first terminal is arranged in the protective tube, and the second terminal is arranged in the protective tube, thereby improving the protection of the first terminal and the second terminal and reducing the possibility of the first terminal and the second terminal being damaged by accidental bumps.

[0020] Preferably, a sliding ring groove is provided on the inner side wall of the protection tube, and a limit plate is provided on the side surface of the protection tube, and the limit plate is arranged in the sliding ring groove.

[0021] By adopting the above technical solution, a sliding ring groove is opened on the inner wall of the protective tube, and a limiting plate is provided on the side of the protective tube. The limiting plate is arranged in the sliding ring groove. The limiting plate prevents the protective tube from separating from the outer shell tube, thereby improving the stability of the connection between the protective tube and the outer shell tube.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The NTC thermistor is set in the shell tube, the first terminal is inserted in the shell tube, the second terminal is inserted in the shell tube, and the second terminal is set next to the first terminal. There are pins 1 and 2 on the NTC thermistor. Pin 1 is set in the shell tube, and pin 2 is set in the shell tube. Pin 1 is connected to the first terminal, and pin 2 is connected to the second terminal. When it is necessary to measure the water temperature change, the first terminal and the second terminal are connected to the external device so that the NTC thermistor contacts the water source, which is convenient for detecting water temperature changes. The NTC water temperature sensor has a simple structure and is easy to install and use.

[0024] 2. A positioning column 1 is provided on the bottom surface of the base, and a positioning column 2 is provided next to the positioning column. Positioning column 2 is provided on the bottom surface of the base. When using the NTC water temperature sensor, when connecting the first terminal and the second terminal to the external device, positioning column 1 and positioning column 2 are inserted into the positioning holes of the external device to improve the stability of the connection between the NTC water temperature sensor and the external device;

[0025] 3. The shell tube is filled with hot melt adhesive, which adheres to the side of the NTC thermistor. The hot melt adhesive adheres to pin 1, pin 2, the first terminal, and the second terminal, thereby sealing the connection between the NTC thermistor and the first and second terminals, thereby improving the stability of the connection between the NTC thermistor and the first and second terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the NTC water temperature sensor in the embodiment of the present application.

[0027] Figure 2 Schematic diagram of the internal structure of the outer shell tube and the protective tube in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the connection mechanism between the base and the connection mechanism in the embodiment of the present application.

[0029] Figure 4 yes Figure 2 A partial enlarged view of point A in the middle.

[0030] Description of reference numerals:

[0031] 1. Housing tube; 11. Base; 111. Positioning column 1; 112. Positioning column 2; 12. Hot melt adhesive; 13. Protective end cap; 131. Mounting block; 132. Mounting slot; 133. Limiting slot; 14. Connecting rope; 15. Round plate; 16. Limiting ring; 17. Protective tube; 171. Sliding ring groove; 18. Limiting plate; 2. Connecting mechanism; 21. First terminal; 22. Second terminal; 3. NTC thermistor; 31. Pin 1; 32. Pin 2. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses an NTC water temperature sensor, referring to Figure 1 and Figure 2 As shown, the NTC water temperature sensor includes a housing tube 1, a connecting mechanism 2 and an NTC thermistor 3. The housing tube 1 is arranged horizontally, and the length direction of the housing tube 1 is parallel to the ground.

[0034] Reference Figure 1 and Figure 2 As shown, a base 11 is provided in the outer shell tube 1, the side surface of the base 11 abuts against the inner side wall of the mounting tube, the axial centerline direction of the base 11 coincides with the axial centerline direction of the outer shell tube 1, and the connecting mechanism 2 includes a first terminal 21 and a second terminal 22. The first terminal 21 is inserted into the base 11 and extends out of the base 11. The second terminal 22 is inserted into the base 11 and extends out of the base 11, thereby improving the installation stability of the first terminal 21 and the second terminal 22.

[0035] Reference Figure 2 As shown, the NTC thermistor 3 is partially arranged inside the shell tube 1, and the NTC thermistor 3 is partially arranged outside the shell tube 1. The NTC thermistor 3 is provided with a pin 1 31 and a pin 2 32. The pin 1 31 is connected to the first terminal 21, and the pin 2 32 is connected to the second terminal 22.

[0036] Reference Figure 1 and Figure 2 As shown, when it is necessary to measure the water temperature change, the first terminal 21 and the second terminal 22 are connected to an external device so that the NTC thermistor 3 contacts the water source, which is convenient for detecting the water temperature change. The NTC water temperature sensor has a simple structure and is easy to install and use.

[0037] Reference Figure 2 and Figure 3 As shown, a positioning column 111 is provided on the bottom surface of the base 11, and a positioning column 2 112 is provided next to the positioning column 111. The positioning column 2 112 is provided on the bottom surface of the base 11. When using the NTC water temperature sensor, when the first terminal 21 and the second terminal 22 are connected to the external device, the positioning column 111 and the positioning column 2 112 are inserted into the positioning holes of the external device to improve the stability of the connection between the NTC water temperature sensor and the external device.

[0038] Reference Figure 2 As shown, the shell tube 1 is filled with hot melt adhesive 12, and the hot melt adhesive 12 is in contact with the side surface of the NTC thermistor 3. The hot melt adhesive 12 is in contact with the pin 1 31, the pin 2 32, the first terminal 21, and the second terminal 22, thereby sealing the connection between the NTC thermistor 3 and the first terminal 21 and the second terminal 22, thereby improving the stability of the connection between the NTC thermistor 3 and the first terminal 21 and the second terminal 22.

[0039] Reference Figure 2As shown, a protective end cap 13 is threadedly mounted on the end surface of the housing tube 1 away from the first terminal 21 and the second terminal 22. The axis of the protective end cap 1 coincides with the axis of the housing tube 1. The NTC thermistor 3 is partially disposed within the protective end cap 13. When the NTC thermistor 3 is not needed to detect water temperature changes, the protective end cap 13 is screwed onto the housing tube 1 to reduce the possibility of damage to the NTC thermistor 3 from accidental collisions.

[0040] Reference Figure 2 and Figure 4 As shown, a mounting block 131 is provided on the side of the protective end cover 13, and a mounting groove 132 is provided on the side of the mounting block 131. The axial centerline direction of the mounting groove 132 coincides with the axial centerline direction of the shell tube 1, and a limiting groove 133 is provided on the side wall of the mounting groove 132. The axial centerline direction of the limiting groove 133 coincides with the axial centerline direction of the mounting groove 132.

[0041] Reference Figure 2 and Figure 4 As shown, a connecting rope 14 is provided on the outer shell tube 1, a circular plate 15 is provided on the connecting rope 14, a limiting ring 16 is provided on the side of the circular plate 15, the circular plate 15 is rotatably set in the installation groove 132, the axial centerline direction of the circular plate 15 coincides with the axial centerline direction of the outer shell tube 1, the limiting ring 16 is rotatably set in the limiting groove 133, and the axial centerline direction of the limiting ring 16 coincides with the axial centerline direction of the circular plate 15.

[0042] Reference Figure 2 and Figure 4 As shown, the protective end cover 13 is connected to the outer shell tube 1 through a limiting ring 16, a circular plate 15, and a connecting rope 14, thereby improving the stability of the connection between the protective end cover 13 and the outer shell tube 1.

[0043] Reference Figure 1 and Figure 2 As shown, a protective tube 17 is threadedly provided on the outer shell tube 1, and the protective tube 17 is connected to the outer shell tube 1. The axial centerline direction of the protective tube 17 coincides with the axial centerline direction of the outer shell tube 1. The first terminal 21 is arranged in the protective tube 17, and the second terminal 22 is arranged in the protective tube 17, so as to reduce the possibility of the first terminal 21 and the second terminal 22 being damaged by accidental collision.

[0044] Reference Figure 1 and Figure 2As shown, a sliding ring groove 171 is provided on the inner wall of the protective tube 17, and the axial centerline direction of the sliding ring groove 171 coincides with the axial centerline direction of the protective tube 17. A limiting plate 18 is provided on the side of the protective tube 17, and the limiting plate 18 is provided in the sliding ring groove 171. The axial centerline direction of the limiting plate 18 coincides with the axial centerline direction of the protective tube 17. The limiting plate 18 prevents the protective tube 17 from separating from the outer shell tube 1, thereby improving the stability of the connection between the protective tube 17 and the outer shell tube 1.

[0045] The implementation principle of an NTC water temperature sensor in the embodiment of the present application is as follows:

[0046] When it is necessary to measure the water temperature change, the first terminal 21 and the second terminal 22 are connected to an external device so that the NTC thermistor 3 contacts the water source, which facilitates the detection of water temperature changes. The NTC water temperature sensor has a simple structure and is easy to install and use.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An NTC water temperature sensor, comprising an NTC thermistor (3) for measuring water temperature changes, characterized in that: The NTC thermistor (3) is partially arranged in the shell tube (1), and the NTC thermistor (3) is partially arranged outside the shell tube (1). A connecting mechanism (2) for connecting to an external device is arranged in the shell tube (1), and the connecting mechanism (2) includes a first terminal (21) inserted in the shell tube (1) and a second terminal (22) arranged next to the first terminal (21). The second terminal (22) is inserted in the shell tube (1). The NTC thermistor (3) has a pin 1 (31) and a pin 2 (32). The pin 1 (31) is arranged in the shell tube (1), and the pin 2 (32) is arranged in the shell tube (1). The pin 1 (31) is connected to the first terminal (21), and the pin 2 (32) is connected to the second terminal (22).

2. The NTC water temperature sensor according to claim 1, characterized in that: A base (11) is provided in the shell tube (1), the side surface of the base (11) abuts against the inner wall of the shell tube (1), the first terminal (21) is inserted into the base (11), and the first terminal (21) extends out of the base (11), and the second terminal (22) is inserted into the base (11), and the second terminal (22) extends out of the base (11).

3. The NTC water temperature sensor according to claim 2, characterized in that: A positioning column 1 (111) is provided on the bottom surface of the base (11), a positioning column 2 (112) is provided next to the positioning column 1 (111), and the positioning column 2 (112) is provided on the bottom surface of the base (11).

4. The NTC water temperature sensor according to claim 2, characterized in that: The shell tube (1) is filled with hot melt adhesive (12), the hot melt adhesive (12) is in contact with the side surface of the NTC thermistor (3), and the hot melt adhesive (12) is in contact with the pin 1 (31), the pin 2 (32), the first terminal (21), and the second terminal (22).

5. The NTC water temperature sensor according to claim 1, characterized in that: A protective end cap (13) is threadedly sleeved on the end surface of the shell tube (1) away from the first terminal (21) and the second terminal (22), and the NTC thermistor (3) is partially disposed in the protective end cap (13).

6. The NTC water temperature sensor according to claim 5, characterized in that: A mounting block (131) is provided on the side of the protective end cover (13), a mounting groove (132) is provided on the side of the mounting block (131), a limiting groove (133) is provided on the side wall of the mounting groove (132), a connecting rope (14) is provided on the shell tube (1), a circular plate (15) is provided on the connecting rope (14), a limiting ring (16) is provided on the side of the circular plate (15), the circular plate (15) is rotatably arranged in the mounting groove (132), and the limiting ring (16) is rotatably arranged in the limiting groove (133).

7. The NTC water temperature sensor according to claim 1, characterized in that: A protective tube (17) is threadedly sleeved on the outer shell tube (1), the protective tube (17) is connected to the outer shell tube (1), the first terminal (21) is arranged in the protective tube (17), and the second terminal (22) is arranged in the protective tube (17).

8. The NTC water temperature sensor according to claim 7, characterized in that: A sliding ring groove (171) is provided on the inner side wall of the protection tube (17), and a limiting plate (18) is provided on the side surface of the protection tube (17), and the limiting plate (18) is arranged in the sliding ring groove (171).

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