A split thermometer

Abstract

The utility model discloses a kind of split thermometer, including host computer and temperature measuring head, the host computer one end is equipped with jack, the jack side wall is fixed with a pair of guide strip, the host computer inside is provided with contact copper base, the temperature measuring head tail end is fixed with the contact head compatible with contact copper base, the temperature measuring head is close to the one end of contact head and is equipped with a pair of guide slot and a limit hole, the host computer is close to the one end of jack and is provided with limiting mechanism, in medical scene, different specifications of ceramic temperature measuring end can be replaced according to the needs of different patients, and ceramic temperature measuring end is easy to disinfect, can avoid cross infection;In industrial scene, the ceramic temperature measuring end of high temperature resistance can be replaced, adapt to the measurement demand under high temperature environment. At the same time, since host computer and temperature measuring head split design, when temperature measuring head is damaged, only need to replace temperature measuring head, reduce use cost.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement equipment technology, specifically to a split-type thermometer, which is particularly suitable for accurate temperature measurement in various scenarios such as medical, industrial testing, and daily household use. Through the split design of the main unit and the temperature measuring head, it realizes the functions of convenient replacement, maintenance and improved measurement adaptability. Background Technology

[0002] Thermometers, as commonly used temperature measurement tools, are widely used in various fields. Traditional thermometers are mostly one-piece structures, meaning the temperature sensing element, display, and control modules are fixedly connected as a single unit. This type of one-piece thermometer has several drawbacks in practical use:

[0003] First, when the temperature measuring end is damaged, the entire thermometer needs to be replaced because the overall structure is not disassembled. This not only increases the cost of use but also wastes resources. For example, in medical settings, if the temperature measuring end of a thermometer is damaged due to an impact, even if the display module is intact, the entire thermometer must be scrapped, increasing the equipment expenditure for medical institutions.

[0004] Secondly, different scenarios have different requirements for the material and performance of the temperature measuring end. For example, industrial environments may require a temperature measuring end that can withstand high temperatures, while daily home use prioritizes the safety and comfort of the temperature measuring end. The temperature measuring end material of an integrated thermometer is fixed and cannot be replaced according to the needs of different scenarios, which limits its applicability.

[0005] Furthermore, traditional thermometers often lack effective sealing and limiting structures at their connection points, making them prone to loosening during use, leading to poor contact and affecting measurement accuracy. At the same time, external impurities such as dust and moisture can easily enter the connection points, damaging internal components and shortening the thermometer's lifespan.

[0006] In addition, some thermometers use ordinary metal contact parts, which have poor conductivity and corrosion resistance. After long-term use, they are prone to oxidation and rust, which further reduces the accuracy and stability of the measurement.

[0007] To address the aforementioned issues, some split-type thermometers have emerged on the market, but these thermometers still have shortcomings in their structural design. For example, the connection and positioning between the temperature measuring head and the main unit in some split-type thermometers are not precise enough, making deviations during installation prone to occur and affecting the contact effect; the limiting mechanism of some thermometers is cumbersome to operate, making it inconvenient to quickly disassemble and install the temperature measuring head; and some thermometers lack effective sealing measures, failing to meet the requirements for use in humid environments. Therefore, there is an urgent need for a split-type thermometer with a reasonable structure, stable connection, good sealing, easy disassembly and assembly, and accurate measurement to overcome the deficiencies of existing technologies. Utility Model Content

[0008] The purpose of this invention is to overcome the problems of high replacement cost and narrow application range of integrated thermometers in the prior art, as well as the unstable connection, poor sealing and inconvenient operation of existing split thermometers. It provides a split thermometer that achieves a precise and stable connection between the main unit and the temperature measuring head, ensures measurement accuracy, and facilitates disassembly and maintenance, thereby expanding the application range and extending the service life.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A split-type thermometer includes a main unit and a temperature measuring head. One end of the main unit has a socket, and a pair of guide bars are fixed to the side wall of the socket. A copper contact seat is disposed inside the main unit. A contact head adapted to the copper contact seat is fixed to the tail end of the temperature measuring head. A pair of guide grooves and a limiting hole are disposed at the end of the temperature measuring head near the contact head. A limiting mechanism is disposed at the end of the main unit near the socket. The limiting mechanism includes a limiting slide cavity formed on the main unit housing, and a limiting slider is disposed inside the limiting slide cavity. A limiting head is fixed to one end of the limiting slider, and a pull rod is fixed to the other end. A spring is sleeved on the pull rod inside the limiting slide cavity.

[0011] Furthermore, the end of the limiting head away from the limiting slider is hemispherical, and the radius of the hemispherical end face is adapted to the curvature of the inner wall of the limiting hole, ensuring that the limiting head can be smoothly inserted into the limiting hole, while ensuring the stability of the connection and avoiding shaking.

[0012] Furthermore, the guide bar has a T-shaped cross-section, and the guide groove is a T-shaped groove that slides and adapts to the T-shaped guide bar, with the length of the guide bar being less than the depth of the insertion hole. The T-shaped guide bar and guide groove work together to achieve precise positioning of the main unit and the temperature measuring head, preventing rotational deviation during installation and ensuring accurate docking of the contact head and the contact copper base. At the same time, the guide bar length being less than the insertion hole depth avoids the guide bar obstructing full contact between the contact head and the contact copper base.

[0013] Furthermore, the contact head is made of copper, and the inner wall of the copper contact base is fixed with a gold plating layer. After the contact head is inserted into the socket, it fits tightly with the gold plating layer. Copper has excellent electrical and thermal conductivity, enabling rapid transmission of temperature measurement signals. The gold plating layer improves the corrosion resistance and electrical conductivity of the copper contact base, reduces contact resistance, ensures stable transmission of temperature measurement signals, and improves measurement accuracy.

[0014] Furthermore, the end of the pull rod furthest from the limiting slider extends out of the main unit's housing, and a pull ring is fixed to the extended end. The outer surface of the pull ring is evenly provided with anti-slip textures. The pull ring design facilitates the operator to pull the pull rod to unlock the limiting mechanism, and the anti-slip textures increase the friction between the hand and the pull ring, preventing slippage during operation and improving ease of operation.

[0015] Furthermore, an annular sealing groove is formed on the inner wall of the socket near the opening, and a silicone sealing ring is embedded in the annular sealing groove. After the temperature measuring head is inserted into the socket, the silicone sealing ring comes into close contact with the outer wall of the temperature measuring head. The silicone sealing ring has good elasticity and sealing performance, which can effectively prevent external dust, moisture and other impurities from entering the socket, protecting the contact head and contact copper seat from damage. At the same time, it can enhance the sealing performance of the connection between the main unit and the temperature measuring head, and improve the applicability of the thermometer in humid environments.

[0016] Furthermore, a ceramic temperature measuring end is fixed to the end of the temperature measuring head away from the contact head. Ceramic material has advantages such as high temperature resistance, corrosion resistance, and stable thermal conductivity, which can adapt to the measurement needs of different temperature ranges and harsh environments. At the same time, the ceramic surface is smooth and easy to clean and disinfect, making it particularly suitable for medical and other scenarios with high hygiene requirements.

[0017] Working principle

[0018] This utility model's split-type thermometer achieves temperature measurement through the cooperation of the main unit and the temperature measuring head. The specific working principle is as follows:

[0019] Installation Process: When installing the temperature sensor, first align the guide groove on the temperature sensor with the guide strip on the side wall of the main unit's socket. Since both the guide strip and guide groove are T-shaped, precise positioning is achieved, preventing the temperature sensor from rotating during insertion. Then, push the temperature sensor into the socket. During this pushing process, the outer wall of the temperature sensor will first contact the hemispherical end face of the limiting head, generating a pushing force into the limiting cavity. After receiving this pushing force, the limiting head moves the limiting slider within the limiting cavity, simultaneously compressing the spring, which is now in a stored state. As the temperature sensor continues to be inserted, when the limiting hole on the temperature sensor moves to the position corresponding to the limiting head, the stored spring force is released, pushing the limiting slider closer to the temperature sensor, thus inserting the limiting head into the limiting hole, achieving the limiting and fixing of the temperature sensor to the main unit. At this point, the contact head at the tail end of the temperature sensor also inserts precisely into the contact copper base inside the main unit, tightly adhering to the gold plating layer on the inner wall of the contact copper base, completing the electrical connection. Meanwhile, the silicone sealing ring inside the socket comes into close contact with the outer wall of the temperature measuring head, achieving a seal.

[0020] Temperature Measurement Process: During temperature measurement, the ceramic sensing end of the temperature probe, furthest from the contact head, contacts the object being measured. The ceramic sensing end converts the sensed temperature signal into an electrical signal. This electrical signal is generated based on the thermoelectric effect of the ceramic material; that is, the movement of charge carriers inside the ceramic changes at different temperatures, thus generating a potential difference. Because the contact head and the copper contact base are in close contact, and the contact head is made of pure copper with a gold-plated inner wall, the electrical signal has excellent conductivity and can be transmitted quickly and stably through the contact head and copper contact base to the signal processing module inside the host. The host's signal processing module amplifies, filters, and performs AD conversion on the received electrical signal, converting it into a digital signal, which is then transmitted to the display module. The display module displays the digital signal as a temperature value for the operator to read.

[0021] Disassembly process: When the temperature sensor needs to be replaced or maintained, the operator pulls the pull ring on the outside of the main unit. The pull ring moves the pull rod away from the temperature sensor, which in turn moves the limit slider within the limit cavity. Simultaneously, the spring is compressed, and the limit head moves with the limit slider, disengaging from the limit hole and releasing the limit on the temperature sensor. At this point, the operator simply pulls the temperature sensor outward along the guide bar to complete the disassembly. After disassembly, releasing the pull ring returns the spring to its original state, moving the limit slider, limit head, and pull rod back to their initial positions for the next installation of the temperature sensor.

[0022] Beneficial effects

[0023] In medical settings, different specifications of ceramic temperature measuring tips can be replaced according to the needs of different patients. These tips are also easy to disinfect, preventing cross-infection. In industrial settings, high-temperature resistant ceramic temperature measuring tips can be used to meet measurement requirements in high-temperature environments. Furthermore, due to the separate design of the main unit and the temperature measuring head, only the measuring head needs to be replaced when it is damaged, reducing operating costs. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the temperature measuring head structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the host of this utility model;

[0029] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at point A in the middle;

[0030] In the picture:

[0031] 1-Main unit, 11-Socket, 12-Guide bar, 13-Contact copper base, 2-Temperature measuring head, 21-Contact head, 22-Guide groove, 23-Limiting hole, 3-Limiting mechanism, 31-Limiting slide cavity, 32-Limiting slider, 33-Limiting head, 34-Pull rod, 35-Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1-5 As shown;

[0034] A split-type thermometer.

[0035] This implementation plan addresses the technical problems existing in the prior art, such as those disclosed in the background section above: "Thermometers, as commonly used temperature measurement tools, are widely used in various fields. Traditional thermometers are mostly of an integrated structure, meaning that the temperature sensing element and display, control, and other functional modules are fixedly connected as a single unit. This type of integrated thermometer has many drawbacks in practical use:"

[0036] First, when the temperature measuring end is damaged, the entire thermometer needs to be replaced because the overall structure is not disassembled. This not only increases the cost of use but also wastes resources. For example, in medical settings, if the temperature measuring end of a thermometer is damaged due to an impact, even if the display module is intact, the entire thermometer must be scrapped, increasing the equipment expenditure for medical institutions.

[0037] Secondly, different scenarios have different requirements for the material and performance of the temperature measuring end. For example, industrial environments may require a temperature measuring end that can withstand high temperatures, while daily home use prioritizes the safety and comfort of the temperature measuring end. The temperature measuring end material of an integrated thermometer is fixed and cannot be replaced according to the needs of different scenarios, which limits its applicability.

[0038] Furthermore, traditional thermometers often lack effective sealing and limiting structures at their connection points, making them prone to loosening during use, leading to poor contact and affecting measurement accuracy. At the same time, external impurities such as dust and moisture can easily enter the connection points, damaging internal components and shortening the thermometer's lifespan.

[0039] In addition, some thermometers use ordinary metal contact parts with poor conductivity and corrosion resistance. After long-term use, they are prone to oxidation and rust, which further reduces the accuracy and stability of the measurement. In terms of practical use, this problem is obviously real and difficult to solve. Therefore, in order to solve this technical problem, a split thermometer is provided.

[0040] This embodiment provides a split-type thermometer, the structure of which is as follows: Figure 1-5 As shown, it includes a main unit 1 and a temperature sensor 2.

[0041] The main unit 1 is made of ABS plastic, which has good insulation performance and mechanical strength. An LCD display screen is located on the front of the main unit 1 to display the measured temperature value. A power button and a temperature unit switching button are located on the side for easy operation. One end of the main unit 1 has a socket 11, the diameter of which matches the diameter of the temperature measuring head 2, ensuring smooth insertion. A pair of guide strips 12 are fixed to the side wall of the socket 11 using an injection molding process. The guide strips 12 have a T-shaped cross-section and a length that is 2 / 3 of the depth of the socket 11, preventing obstruction of contact between the contact head 21 and the contact copper base 13. The contact copper base 13 is fixed inside the main unit 1 with screws. The contact copper base 13 is made of brass, and its inner wall is electroplated with a 0.05mm thick gold plating layer to improve conductivity and corrosion resistance.

[0042] The main body of the temperature measuring head 2 is made of stainless steel, which has good corrosion resistance and mechanical strength. A contact head 21, made of copper, is fixed to the tail end of the temperature measuring head 2 via welding. Its diameter matches the inner diameter of the copper contact base 13 to ensure a tight fit. A pair of guide grooves 22, T-shaped grooves, are provided at the end of the temperature measuring head 2 closest to the contact head 21, slidingly fitting with the guide strip 12. A limiting hole 23 is also provided on the side wall of the temperature measuring head 2, with its diameter matching that of the limiting head 33. A ceramic temperature measuring end, made of alumina ceramic, is fixed to the end of the temperature measuring head 2 furthest from the contact head 21 via threaded connection. This ceramic temperature measuring end has good high-temperature resistance and thermal conductivity.

[0043] A limiting mechanism 3 is provided at one end of the main unit 1 near the socket 11. The limiting mechanism 3 includes a limiting slide cavity 31 formed on the housing of the main unit 1. The limiting slide cavity 31 is a cylindrical cavity, and a limiting slider 32 is slidably installed inside. The limiting slider 32 is made of plastic and fits tightly against the inner wall of the limiting slide cavity 31 to prevent shaking. One end of the limiting slider 32 is fixed with a limiting head 33 by glue. The limiting head 33 is made of metal, and its end away from the limiting slider 32 is hemispherical. The radius of the hemispherical end face matches the curvature of the inner wall of the limiting hole 23. The other end of the limiting slider 32 is fixed with a pull rod 34 by a threaded connection. The pull rod 34 is a metal rod, and its end away from the limiting slider 32 extends out of the housing of the main unit 1. A pull ring is fixed to the extended end by welding. The outer surface of the pull ring is provided with anti-slip texture by knurling. A spring 35 is sleeved on the pull rod 34 inside the limiting slide cavity 31. The spring 35 is a compression spring, one end of which abuts against the limiting slider 32, and the other end abuts against the inner wall of the limiting slide cavity 31, ensuring that the limiting head 33 can extend out of the limiting slide cavity 31 in the natural state.

[0044] In addition, an annular sealing groove is provided on the inner wall of the socket 11 near the opening. The width and depth of the annular sealing groove are adapted to the silicone sealing ring. The silicone sealing ring is embedded in the annular sealing groove. The silicone sealing ring is made of food-grade silicone material and has good elasticity and sealing performance. When the temperature measuring head 2 is inserted into the socket 11, the silicone sealing ring is in close contact with the outer wall of the temperature measuring head 2 to achieve a seal.

[0045] In this embodiment, the split-type thermometer is installed, measured, and disassembled according to the working principle described above. In medical settings, different specifications of ceramic temperature measuring ends can be replaced according to the needs of different patients, and the ceramic temperature measuring ends are easy to disinfect, avoiding cross-infection. In industrial settings, high-temperature resistant ceramic temperature measuring ends can be replaced to meet the measurement needs in high-temperature environments. Furthermore, because the main unit 1 and the temperature measuring head 2 are designed separately, when the temperature measuring head 2 is damaged, only the temperature measuring head 2 needs to be replaced, reducing usage costs.

[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A split-type thermometer, comprising a main unit (1) and a temperature measuring head (2), characterized in that: The host (1) has an insertion hole (11) at one end, and a pair of guide bars (12) are fixed on the side wall of the insertion hole (11). The host (1) has a contact copper seat (13) inside, and a contact head (21) that matches the contact copper seat (13) is fixed at the tail end of the temperature measuring head (2). A pair of guide grooves (22) and a limiting hole (23) are provided at the end of the temperature measuring head (2) near the contact head (21). A limiting mechanism (3) is provided at the end of the host (1) near the insertion hole (11). The limiting mechanism (3) includes a limiting slide cavity (31) opened on the housing of the host (1). A limiting slider (32) is provided inside the limiting slide cavity (31). A limiting head (33) is fixed at one end of the limiting slider (32), and a pull rod (34) is fixed at the other end. A spring (35) is sleeved on the pull rod (34) inside the limiting slide cavity (31).

2. A split-type thermometer according to claim 1, characterized in that: The end of the limiting head (33) away from the limiting slider (32) is hemispherical, and the radius of the hemispherical end face is adapted to the curvature of the inner wall of the limiting hole (23).

3. A split-type thermometer according to claim 2, characterized in that: The cross-section of the guide bar (12) is T-shaped, and the guide groove (22) is a T-shaped groove that slides and adapts to the T-shaped guide bar (12), and the length of the guide bar (12) is less than the depth of the socket (11).

4. A split-type thermometer according to claim 1, characterized in that: The contact head (21) is made of copper. The inner wall of the contact copper base (13) is fixed with a gold plating layer. After the contact head (21) is inserted into the socket (11), it fits tightly with the gold plating layer.

5. A split-type thermometer according to claim 1, characterized in that: The end of the pull rod (34) away from the limiting slider (32) extends out of the housing of the host (1), and a pull ring is fixed at the extended end. The outer surface of the pull ring is uniformly provided with anti-slip texture.

6. A split-type thermometer according to claim 1, characterized in that: An annular sealing groove is provided on the inner wall of the socket (11) near the opening. A silicone sealing ring is embedded in the annular sealing groove. After the temperature measuring head (2) is inserted into the socket (11), the silicone sealing ring is in close contact with the outer wall of the temperature measuring head (2).

7. A split-type thermometer according to claim 1, characterized in that: The end of the temperature measuring head (2) away from the contact head (21) is fixed with a ceramic temperature measuring end.

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