A sealed temperature measuring probe

Abstract

The application discloses a sealed temperature measuring probe and relates to the technical field of temperature measuring probes. The temperature measuring probe comprises a probe main body, a first thermistor, a battery and a power supply plug. The first thermistor and the battery are arranged in the probe main body, the first thermistor is connected with the battery and is used for detecting temperature, the first thermistor is arranged at one end of the probe main body, the probe main body comprises a connecting sleeve, the connecting sleeve is arranged at the end of the probe main body which is far away from the first thermistor, the power supply plug is arranged in the connecting sleeve, is connected with the battery and is used for connecting a power supply and an external charging device, the connecting sleeve is provided with a conical sealing surface, the power supply plug is provided with a conical connecting surface, the conical sealing surface and the conical connecting surface are in contact and are used for sealing the connection between the power supply plug and the probe main body. The connecting sleeve and the power supply plug have a large contact area, and when the power supply plug is fixed by being pressed downward, the pressure between the conical sealing surface and the conical connecting surface can be increased, the sealing effect is improved, and therefore the temperature measuring probe has good sealing performance.

Description

Technical Field

[0001] This application relates to the technical field of temperature probes, and in particular to a sealed temperature probe. Background Technology

[0002] Temperature probes, as important tools for temperature measurement, are widely used in various industrial production and scientific experiments. However, traditional temperature probes have certain shortcomings in structural design and sealing performance, especially at the power connection, where poor sealing often allows moisture or impurities to enter, thus affecting the accuracy of the measurement and the lifespan of the probe.

[0003] Utility model patent publication number CN218035427U discloses a probe-type thermometer, including a thermometer body and a probe. The probe tip is mounted on the thermometer body. The thermometer body is provided with a control circuit board and a mounting bracket. The control circuit board is inserted into the mounting bracket, which is inserted into the interior of the thermometer body. The mounting bracket has a first slot and a second slot, which are arranged opposite to each other. Through the cooperation of the first slot, the second slot, and the control circuit board, the control circuit board is securely mounted inside the thermometer body, enhancing the stability of the control circuit board installation and reducing the possibility of the control circuit board shaking or even colliding with the inner wall of the thermometer body. Because the thermometer body and probe are mounted in a mounting structure, and the thermometer body also has insertion structures, it is difficult to maintain the sealing of the thermometer body. Liquid can easily seep into the thermometer body and damage the thermometer. Summary of the Invention

[0004] To address the issue of weak sealing in thermometers, this application provides a sealed temperature probe.

[0005] Firstly, the sealed temperature probe provided in this application adopts the following technical solution: A sealed temperature probe includes a probe body, a first thermistor, a battery, and a power switch. The first thermistor and the battery are disposed inside the probe body. The first thermistor is connected to the battery and is used to detect temperature. The first thermistor is located at one end of the probe body. The probe body includes a connecting sleeve located at the end of the probe body away from the first thermistor. The power switch is located inside the connecting sleeve and is connected to the battery for connecting to a power source and an external charging device. The connecting sleeve has a conical sealing surface, and the power switch has a conical connecting surface. The conical sealing surface and the conical connecting surface are in contact to seal the connection between the power switch and the probe body.

[0006] While the above technical solution ensures the sealing of the temperature probe through wireless connection, the need for a connection port still affects its sealing performance. By incorporating a connecting sleeve with a conical sealing surface at the tail end of the probe body (the conical sealing surface being a hole that gradually narrows from the outside in), and a corresponding conical connecting surface (similar to a frustum of a cone) on the power valve, the connecting sleeve and power valve have a larger contact area. Pressing down on the power valve increases the pressure between the conical sealing surface and the conical connecting surface, improving the sealing effect. This results in a better sealing performance, preventing liquids and other external substances from seeping into the probe through the connection between the power valve and the probe body, ensuring long-term normal operation.

[0007] Optionally, the probe body also includes a needle tube, a handle, and a connecting part, with the connecting part located between the needle tube and the handle, and the handle being a connecting sleeve relative to a section of the connecting part.

[0008] By adopting the above technical solution, the probe body is divided into several parts, which facilitates the installation of various components inside the probe body. The handle and the needle tube are the main load-bearing shells, and the two are sealed by the connecting part to ensure that the temperature measuring probe maintains a good sealing state after installation.

[0009] Optionally, a first glass ring is provided between the connecting sleeve and the handle, and the first glass ring is welded to the connecting part and the handle respectively.

[0010] By adopting the above technical solution, the first glass ring can be integrated with the connecting part and the handle after high-temperature welding, which enhances the sealing degree at the connecting part and ensures that liquid cannot seep in from between the connecting part and the handle.

[0011] Optionally, a second glass ring is provided between the connecting part and the handle, and the second glass ring is welded to the connecting sleeve and the handle respectively.

[0012] By adopting the above technical solution, the second glass ring can be integrated with the connecting sleeve and the handle after high-temperature welding, which enhances the sealing degree at the connecting sleeve and ensures that liquid cannot seep in from between the connecting sleeve and the handle.

[0013] Optionally, it also includes a control circuit board, which is located inside the needle tube and is connected to the first thermistor and the battery respectively.

[0014] By adopting the above technical solution, the control circuit board, which controls the working state of the first thermistor and the battery, is located inside the needle tube. This provides better protection for the control circuit board while facilitating the connection of the first thermistor and the battery respectively.

[0015] Optionally, the syringe contains insulating paper that surrounds the battery and control circuit board.

[0016] By adopting the above technical solution, the insulating paper can protect the battery and control circuit board, preventing external magnetic materials from affecting the operation of the battery and control circuit board, thereby protecting the normal operation of the temperature probe.

[0017] Optionally, a second thermistor is also included, which is connected to the control circuit board.

[0018] By adopting the above technical solution, the second thermistor can detect the temperature of the external environment and compare it with the internal environment detected by the first thermistor. This improves the temperature measurement diversity of the temperature probe and verifies the accuracy of the temperature measurement by comparing the internal and external temperatures.

[0019] Optionally, a connecting tube may also be included, which connects the needle, the connector, and the handle.

[0020] By adopting the above technical solution, the connecting tube is used for the circuit inside the temperature probe to pass through. The connecting tube connects the needle tube, the connecting part and the handle, so that the components in each structure can be connected to each other.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By providing a connecting sleeve with a conical sealing surface at the tail end of the probe body, which cooperates with a power valve with a conical connecting surface, the connecting sleeve and the power valve have a large contact area. Furthermore, by pressing down to fix the power valve, the pressure between the conical sealing surface and the conical connecting surface can be increased, thereby improving the sealing effect and giving the temperature probe better sealing performance. 2. The first and second glass rings can be fused together with the contacting parts after high-temperature welding, which enhances the sealing of the connection and ensures that liquid cannot seep in from between the connection and the handle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 A magnified view of part A in the middle; Figure 3 yes Figure 1 A magnified view of part B in the diagram.

[0023] Reference numerals: 1. Probe body; 11. Needle tube; 12. Handle; 13. Connecting part; 14. Connecting sleeve; 15. Conical sealing surface; 16. First glass ring; 17. Second glass ring; 18. Connecting tube; 2. First thermistor; 3. Battery; 4. Power switch; 41. Conical connecting surface; 5. Control circuit board; 6. Insulating paper; 7. Second thermistor; 8. Connecting tube. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] A sealed temperature probe, reference Figure 1 and Figure 3 The probe body includes a probe body 1, a first thermistor 2, a battery 3, a power switch 4, a control circuit board 5, and a second thermistor 7. The probe body 1 is the main structure of the temperature probe, with an internal cavity to accommodate the other components. The probe body 1 includes a needle tube 11, a handle 12, a connecting part 13, and a connecting sleeve 14. The needle tube 11, connecting part 13, handle 12, and connecting sleeve 14 are connected sequentially. The needle tube 11 and connecting part 13 are connected by laser welding. A second glass ring 17 is provided between the connecting part 13 and the handle 12, and a first glass ring 16 is provided between the connecting sleeve 14 and the handle 12. Under high temperature, the first glass ring 16 and the second glass ring 17 are welded to the contacting components, thus forming a single unit. This not only improves the structural strength of the probe but also further enhances its sealing performance, maintaining good sealing performance even in harsh environments. Even if the outer sealing structure is damaged to some extent, the inner sealing structure can continue to function, ensuring that the internal components of the probe are not damaged by moisture and impurities.

[0026] Reference Figure 1 and Figure 3 The power cock 4 is installed inside the connecting sleeve 14 and connected to the control circuit board 5 for connecting the power supply and external charging equipment. The connecting sleeve 14 has a conical sealing surface 15, while the power cock 4 has a corresponding conical connecting surface 41. The conical sealing surface 15 is a hole that gradually narrows from the outside to the inside, and the conical connecting surface 41 has a frustum-shaped structure that mates with the conical sealing surface 15. This allows the connecting sleeve 14 and the power cock 4 to have a large contact area. Furthermore, pressing down to fix the power cock 4 increases the pressure between the conical sealing surface 15 and the conical connecting surface 41, improving the sealing effect. This results in a better sealing performance for the temperature probe, effectively preventing moisture and impurities from entering the probe from the power connection point, ensuring the accuracy of temperature measurement and extending the probe's lifespan.

[0027] Reference Figure 1 and Figure 3The first thermistor 2, battery 3, and control circuit board 5 are all housed inside the needle tube 11. The first thermistor 2 and battery 3 are both connected to the control circuit board 5. The control circuit board 5 can receive and process temperature signals from the first thermistor 2 and the second thermistor 7 and transmit them to the outside world. It can also control the working state of the battery 3, improving the detection efficiency of the temperature probe. Both the first thermistor 2 and the second thermistor 7 are used to detect temperature. The second thermistor 7 is located in the power switch 4 and connected to the control circuit board 5, used to detect the temperature of the external environment, contrasting it with the internal environment detected by the first thermistor 2.

[0028] Reference Figure 2 The needle tube 11 also contains insulating paper 6, which tightly surrounds the battery 3 and the control circuit board 5. The insulating paper 6 prevents the battery 3 and the control circuit board 5 from being affected by external electromagnetic interference, thus ensuring the safety and stability of their operation. The connecting tube 18 connects the needle tube 11, the connecting part 13, and the handle 12, forming a continuous internal channel. This internal channel not only facilitates the wiring connection and layout between components such as the battery 3 and the control circuit board 5, but also protects the circuit connection, maintaining the stability of the internal connection even when the temperature probe is subjected to external pressure or impact.

[0029] The implementation principle of this application embodiment is as follows: the first thermistor 2 and the second thermistor 7 sense the temperature of the object under test in real time and convert the temperature signal into an electrical signal. These electrical signals are then transmitted to the control circuit board 5 for processing and analysis. Simultaneously, the battery 3 provides a stable power supply for the entire system. When it is necessary to connect the temperature probe and external devices, the temperature probe can be adjusted and controlled by connecting an external power cord and the power switch 4. The conical connecting surface 41 of the power switch 4 and the conical sealing surface 15 of the connecting sleeve 14 fit tightly together, ensuring the sealing performance at the power switch 4 and preventing the intrusion of moisture and impurities.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealed temperature probe, characterized in that, The device includes a probe body (1), a first thermistor (2), a battery (3), and a power switch (4). The first thermistor (2) and the battery (3) are located inside the probe body (1). The first thermistor (2) is connected to the battery (3) and is used to detect temperature. The first thermistor (2) is located at one end of the probe body (1). The probe body (1) includes a connecting sleeve (14). The connecting sleeve (14) is located at the end of the probe body (1) away from the first thermistor (2). The power switch (4) is located inside the connecting sleeve (14) and is connected to the battery (3) for connecting the power source and an external charging device. The connecting sleeve (14) has a conical sealing surface (15). The power switch (4) has a conical connecting surface (41). The conical sealing surface (15) and the conical connecting surface (41) are in contact to seal the connection between the power switch (4) and the probe body (1).

2. The hermetically sealed temperature probe according to claim 1, characterized in that, The probe body (1) also includes a needle tube (11), a handle (12) and a connecting part (13). The connecting part (13) is located between the needle tube (11) and the handle (12). A section of the handle (12) relative to the connecting part (13) is connected to the connecting sleeve (14).

3. A hermetically sealed temperature probe according to claim 2, characterized in that, A first glass ring (16) is provided between the connecting sleeve (14) and the handle (12), and the first glass ring (16) is welded to the connecting part (13) and the handle (12) respectively.

4. A hermetically sealed temperature probe according to claim 2, characterized in that, A second glass ring (17) is provided between the connecting part (13) and the handle (12), and the second glass ring (17) is welded to the connecting sleeve (14) and the handle (12) respectively.

5. A hermetically sealed temperature probe according to claim 2, characterized in that, It also includes a control circuit board (5), which is disposed inside the needle tube (11) and is connected to the first thermistor (2) and the battery (3) respectively.

6. A hermetically sealed temperature probe according to claim 5, characterized in that, The needle tube (11) contains insulating paper (6), which surrounds the battery (3) and the control circuit board (5).

7. A hermetically sealed temperature probe according to claim 5, characterized in that, It also includes a second thermistor (7), which is connected to the control circuit board (5).

8. A hermetically sealed temperature probe according to claim 2, characterized in that, It also includes a connecting tube (18) that connects the needle tube (11), the connecting part (13) and the handle (12).

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