Ear cap detection structure for ear thermometer and ear thermometer

Abstract

The utility model relates to medical equipment technical field discloses an ear cap detection structure and ear thermometer for ear thermometer, including probe body, ear cap and PCB assembly, ear cap detachably sets up and assembles in the outside of probe body, PCB assembly and ear cap are intervally arranged, and are equipped with PCB button on the PCB assembly, and are equipped with detection assembly between ear cap and PCB button, push detection assembly contact PCB button through installing ear cap on probe body, and then realize the opening of PCB assembly, or through the ear cap is detached from probe body, to make detection assembly reset and far away from PCB button, and then realize the closing of PCB assembly. Introduce the effective detection mechanism whether ear cap is installed correctly, can promote the temperature measurement accuracy, avoid cross infection, and optimize user experience, to solve the existing ear thermometer, possibly lead to temperature measurement operation not standard, the measurement accuracy is influenced or equipment can not start and stop in time, influence use efficiency and reliability technical problem.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular, to an ear cover detection structure for an ear thermometer and an ear thermometer. Background Technology

[0002] With the continuous development of science and technology, infrared thermometry technology has been widely used in medical and home health monitoring fields due to its advantages such as short response time and high measurement accuracy. Ear thermometers, as a common infrared thermometry device, measure temperature by inserting a probe into the ear canal, offering convenience and speed. However, existing ear thermometers still have some problems in practical use.

[0003] On the one hand, because the probe of an ear thermometer is usually encased in hard plastic, when the ambient temperature is low and the probe temperature is lower than the temperature of the human ear canal, temperature deviation will occur due to heat conduction, affecting the accuracy of the measurement results. On the other hand, there is a risk of cross-infection when the ear thermometer probe comes into contact with different users, especially in crowded public places such as hospitals and schools, where this problem is particularly prominent.

[0004] In addition, existing ear thermometers also have shortcomings in terms of user experience. For example, they lack an effective detection mechanism to check whether the ear tips are installed correctly, which may lead to improper temperature measurement, affect measurement accuracy, or cause the device to fail to start or stop in time, thus affecting efficiency and reliability.

[0005] Therefore, it is necessary to improve the probe structure of existing ear thermometers to enhance temperature measurement accuracy, avoid cross-infection, and optimize the user experience. Utility Model Content

[0006] This utility model provides an ear cover detection structure and an ear thermometer, introducing an effective detection mechanism for whether the ear cover is installed correctly. This can improve temperature measurement accuracy, avoid cross-infection, and optimize the user experience, thereby solving the technical problems of existing ear thermometers that may lead to improper temperature measurement operation, affected measurement accuracy, or failure of the device to start or stop in time, thus affecting the efficiency and reliability of use.

[0007] According to one aspect of this utility model, an ear cover detection structure for an ear thermometer is provided, including a probe body, an ear cover, and a PCB assembly. The ear cover is detachably fitted onto the probe body. The PCB assembly and the ear cover are spaced apart. The PCB assembly has a PCB button, and a detection component is provided between the ear cover and the PCB button. The PCB assembly is opened by installing the ear cover onto the probe body to push the detection component to contact the PCB button; or the PCB assembly is closed by removing the ear cover from the probe body to reset the detection component and move it away from the PCB button.

[0008] Furthermore, the detection assembly includes a detection push rod and a push rod bracket. The detection push rod is slidably arranged along the assembly direction of the earpiece fitted onto the probe body, and the push rod bracket is slidably arranged outside the PCB button and plugged into the detection push rod.

[0009] Furthermore, the detection push rod includes a rod body, a first end of which is used to abut against the ear cover, and a second end of which is configured as a plug section. The side wall of the plug section extends radially outward to form a first protrusion. The plug section and the first protrusion are inserted into the inner cavity of the push rod bracket to realize the connection between the rod body and the push rod bracket, and the plug section and the first protrusion restrict the relative circumferential rotation between the rod body and the push rod bracket.

[0010] Furthermore, the push rod bracket includes a socket portion and an abutment portion. The first end face of the socket portion is provided with a first receiving groove along the axial direction for matching the first end of the rod body. The abutment portion is arranged at an incline at the second end of the socket portion and the end face of the abutment portion is arranged parallel to the PCB assembly.

[0011] Furthermore, the detection assembly also includes a reset mechanism, which includes a second protrusion and a reset spring. The second protrusion is located on the outer wall of the detection push rod and has a polygonal shape, which is used to restrict the circumferential rotation of the detection push rod after assembly. The reset spring is arranged on the second protrusion and is used to force the detection push rod to reset towards the ear cover.

[0012] Furthermore, the probe body has a first open end and a second open end arranged opposite to each other. The first open end is arranged close to the ear cover and the inner side wall of the first open end is provided with a second receiving groove for installing an infrared sensor. The outer side wall of the probe body is provided with at least two fasteners for fixing the ear cover.

[0013] Furthermore, the ear covers are made of transparent material with a wall thickness of 0.03 mm to 0.08 mm, which allows infrared rays to pass through.

[0014] According to another aspect of this utility model, an ear thermometer is also provided, including the aforementioned ear thermometer ear cover detection structure; it also includes a probe bracket and an infrared sensor, the infrared sensor being mounted on a first receiving groove within a first opening end of the probe body, the probe bracket being inserted into and abutting against the infrared sensor from a second opening end of the probe body; the detection push rod of the detection assembly is slidably arranged on the probe bracket and the probe body, forming a double-support sliding mechanism, and the detection push rod is slidably arranged on the probe bracket and / or the probe body through a second protrusion to achieve circumferential limiting of the detection push rod, and a return spring is assembled between the second protrusion and the probe bracket and / or the probe body. Specifically, the reset spring being assembled between the second protrusion and the probe bracket and / or the probe body includes: the reset spring being assembled between the second protrusion and the probe bracket; or the reset spring being assembled between the second protrusion and the probe body; or the reset spring being assembled on the second protrusion and the probe bracket and the probe body. Alternatively, the reset spring can be replaced with other elastic elements with a reset function, such as a spring sheet.

[0015] Furthermore, the probe body is covered with a heat-insulating soft rubber.

[0016] Furthermore, an illumination component and a light guide ring are provided between the probe body and the probe support. The illumination component uses the reflection and focusing effect of the light guide ring to make the light source shine towards the first opening end of the probe body.

[0017] Furthermore, it also includes a panel and a lower housing, the panel and the lower housing are sealed together to form a closed inner cavity; the inner wall of the panel is attached to the PCB assembly via a sealing structure to form a key channel for the control button to slide; the probe body and / or probe bracket are fixedly connected to the lower housing.

[0018] This utility model has the following beneficial effects: 1. Ensure safe use and effectively prevent cross-infection: By mechanically transmitting signals through the detection components, the physical installation state of the ear tips is converted into an electrical signal that triggers the PCB button, thereby controlling the opening and closing of the PCB components. This creates a mandatory usage logic, ensuring that the device can only start working when the disposable ear tips are properly installed. This standardizes the entire operation process and fundamentally eliminates the possibility of measurement without ear tips or by reusing ear tips. It also cuts off the path of cross-infection caused by the probe coming into contact with different users, significantly improving the hygiene and safety of the product.

[0019] 2. Improve the convenience and intelligence of measurement operations: The detection component realizes automatic detection of usage status and automatic circuit on / off. Users do not need to perform additional power-on or inspection steps. The correct installation action itself completes the startup preparation, which simplifies the operation process, reduces the probability of measurement failure due to operational errors, such as forgetting to power on or wearing ear tips, and optimizes the user experience.

[0020] 3. Indirectly ensures the accuracy and consistency of temperature measurement: By forcibly using an ear cover, it is ensured that there is always an ear cover between the probe and the ear canal, avoiding the local temperature changes that may be caused by the probe body, especially the probe body made of hard low-temperature material, directly contacting the ear canal. This provides a more stable measurement environment for the infrared sensor, which helps to reduce measurement errors and improve the reliability and consistency of temperature measurement results.

[0021] 4. Simple and reliable structure, easy to produce and maintain: The detection mechanism of this invention is based on a combination of simple mechanical transmission (detection components) and mature circuit elements (PCB buttons), without the need for complex electronic sensors or software algorithms. This makes the overall structure easy to assemble, with low production costs and high operational stability. At the same time, it is easy for users to replace the ear covers themselves, which meets the requirements of medical devices for reliability and ease of use.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the ear cover detection structure of the ear thermometer according to a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the detection component of a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the probe body of a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the ear thermometer according to a preferred embodiment of the present invention.

[0024] Legend: 100. Probe body; 101. Second receiving groove; 102. Buckle; 103. Probe bracket; 104. Thermal insulation soft rubber; 200. Ear cover; 300. PCB assembly; 301. PCB button; 400. Detection assembly; 401. Detection push rod; 4011. Rod body; 4012. Insertion section; 4013. First protrusion; 402. Push rod bracket; 4021. Socket part; 4022. Abutting part; 4023. First receiving groove; 500. Reset mechanism; 501. Second protrusion; 502. Reset spring; 600. Infrared sensor; 700. Illumination assembly; 800. Light guide ring; 900. Panel; 901. Control button; 1000. Lower housing. Detailed Implementation

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0026] like Figure 1As shown, the ear thermometer ear cover detection structure of this embodiment includes a probe body 100, an ear cover 200, and a PCB assembly 300. The ear cover 200 is detachably fitted onto the probe body 100. The PCB assembly 300 and the ear cover 200 are arranged at intervals. A PCB button 301 is provided on the PCB assembly 300, and a detection component 400 is provided between the ear cover 200 and the PCB button 301. By installing the ear cover 200 on the probe body 100 to push the detection component 400 to contact the PCB button 301, the PCB assembly 300 is turned on; or by removing the ear cover 200 from the probe body 100 to reset the detection component 400 and move it away from the PCB button 301, the PCB assembly 300 is turned off. This invention relates to an ear thermometer with an ear cover detection structure. Through the mechanical transmission of the detection component 400, the physical installation state of the ear cover 200 is converted into an electrical signal that triggers the PCB button 301, thereby controlling the opening and closing of the PCB component 300. This creates a mandatory usage logic: the device can only start working when the disposable ear cover 200 is properly installed. This standardizes the entire operation process, fundamentally eliminating the possibility of measurement without wearing the ear cover 200 or reusing it. It also cuts off the path of cross-infection caused by the probe contacting different users, significantly improving the product's hygiene and safety. The detection component 400 achieves automatic detection of the usage status and automatic circuit switching. Users do not need to perform additional power-on or inspection steps; the correct installation itself completes the startup preparation, simplifying the operation process and reducing the probability of measurement failure due to operational errors, such as forgetting to power on or wear the ear cover 200, thus optimizing the user experience. By forcibly using the ear cover 200, it is ensured that the probe is always separated from the ear canal by the ear cover 200, avoiding potential local temperature changes caused by direct contact between the probe body 100, especially the probe body 100 made of rigid low-temperature material, and the ear canal. This provides a more stable measurement environment for the infrared sensor 600, which helps reduce measurement errors and improves the reliability and consistency of temperature measurement results. The detection mechanism of this invention is based on a combination of simple mechanical transmission (detection component 400) and mature circuit components (PCB button 301), without the need for complex electronic sensors or software algorithms. This makes the overall structure easy to assemble, has low production costs, and high operational stability. At the same time, it allows users to easily replace the ear cover 200, meeting the requirements of medical devices for reliability and ease of use. This utility model relates to an ear thermometer with an ear cover 200 detection structure. Through a clever mechanical linkage design, it directly links the physical action of installing the ear cover 200 with the on / off control of the circuit. This solidifies the hygiene requirement of "preventing cross-infection" into the basic structure of the product. It not only effectively solves the problems of cross-infection and potential measurement errors existing in the prior art, but also significantly improves the automation level of the equipment and the user experience. The structure is simple, the implementation is reliable, and the effect is significant, meeting the needs of industrialization and demonstrating good practicality and progress.

[0027] like Figure 1 and Figure 2 As shown, in this embodiment, the detection component 400 includes a detection push rod 401 and a push rod bracket 402. The detection push rod 401 is slidably arranged along the assembly direction of the earpiece 200 assembled on the probe body 100. The push rod bracket 402 is slidably arranged outside the PCB button 301 and is plugged into the detection push rod 401. By employing a specific mating method between the detection push rod 401 and the push rod bracket 402, the detection push rod 401 is slidably arranged along the assembly direction (i.e., axial direction) of the ear sleeve 200. This allows the detection push rod 401 to directly and accurately receive the axial thrust generated during the installation of the ear sleeve 200, ensuring the directness and uniqueness of the power transmission path. This avoids jamming or transmission failure caused by angular deviations or rotational movements, guaranteeing the reliability of the operation. The push rod bracket 402 provides guidance, steering, and support for the sliding of the detection push rod 401, ensuring that the detection push rod 401 maintains a stable trajectory during reciprocating motion. This effectively prevents deviation, shaking, or even jamming caused by uneven force, ensuring smooth detection operation and long-term durability. The detection push rod 401 and the push rod bracket 402 are connected by a plug-in mating method, which not only achieves stable power transmission between the two components but also automatically completes the matching connection between them. This simplifies the assembly process, allowing for easy and accurate assembly after the two components are installed separately, reducing assembly difficulty and improving production efficiency. The push rod bracket 402 is slidably mounted on the outside of the PCB button 301, enabling it to accurately convert the axial linear motion transmitted from the detection push rod 401 into a vertical pressing action on the PCB button 301. As a power conversion head, the push rod bracket 402 ensures effective and centered triggering of the small button, avoiding accidental touches or poor contact, and improving the accuracy of circuit control. The entire detection assembly 400 has a compact design. Through a combination of sliding and plugging, it achieves the linkage function from the earpiece 200 to the PCB button 301 within a limited space, which is beneficial for the miniaturization design of ear thermometer products. The structural design of the detection assembly 400, through the combined effect of axial sliding guidance and plugging linkage, constructs a mechanical detection mechanism with precise power transmission, stable motion trajectory, simple assembly, and reliable triggering. This ensures that the installation state of the earpiece 200 can be stably and accurately converted into an electrical signal, enabling and guaranteeing the entire earpiece detection function.

[0028] like Figure 1 and Figure 2As shown, in this embodiment, the detection push rod 401 includes a rod body 4011. The first end of the rod body 4011 is used to abut against the ear cover 200. The second end of the rod body 4011 is set as a plug section 4012. The side wall surface of the plug section 4012 extends radially outward to form a first protrusion 4013. The plug section 4012 and the first protrusion 4013 are inserted into the inner cavity of the push rod bracket 402 to realize the connection between the rod body 4011 and the push rod bracket 402. The plug section 4012 and the first protrusion 4013 restrict the relative circumferential rotation between the rod body 4011 and the push rod bracket 402. By inserting the connector 4012 and the first protrusion 4013 together into the inner cavity of the push rod bracket 402, a connection structure with clear guiding and positioning functions is formed. This allows the detection push rod 401 and the push rod bracket 402 to be quickly aligned and installed during assembly, simplifying the assembly process, improving production efficiency, and ensuring the stability of the connection. The radially outward extension of the first protrusion 4013, in conjunction with the corresponding limiting structure (such as a keyway) in the inner cavity of the push rod bracket 402, effectively restricts the relative circumferential rotation between the rod body 4011 and the push rod bracket 402. This ensures that the detection push rod 401 will not rotate uncontrollably during sliding, thereby ensuring that the axial thrust received from the ear sleeve 200 can be transmitted to the push rod bracket 402 without deviation and in a straight line, ultimately achieving precise... The PCB button 301 is triggered to avoid transmission failure or malfunction caused by component rotation. The design of the first protrusion 4013 increases the contact area and structural strength of the plug-in part, making the connection point change from a simple point or line contact to a more stable three-dimensional surface contact. It can better withstand and disperse the repeated pushing force from the ear cover 200 and the possible lateral force, reducing the risk of wear, deformation or damage to the connection part due to long-term use, and improving the mechanical life and reliability of the entire detection component. The combined design of the plug section 4012 and the first protrusion 4013 provides multi-point radial support for the detection push rod 401, which helps to maintain the coaxiality of the detection push rod 401 during the sliding process, prevents it from swaying or shaking in the push rod bracket 402, and ensures smooth movement and accurate triggering action. The end structure design of the detection push rod 401 achieves anti-rotation connection with the push rod bracket 402, provides axial sliding guidance and basic connection through the plug section 4012, and provides circumferential limiting and enhanced structural strength through the first protrusion 4013, together ensuring the uniqueness and reliability of the power transmission direction, thereby ensuring the accuracy and stability of the entire ear cover detection function.

[0029] like Figure 1 and Figure 2As shown, in this embodiment, the push rod bracket 402 includes a socket portion 4021 and an abutment portion 4022. The first end face of the socket portion 4021 is provided with a first receiving groove 4023 along the axial direction for matching the first end of the rod body 4011. The abutment portion 4022 is inclinedly arranged at the second end of the socket portion 4021 and the end face of the abutment portion 4022 is arranged parallel to the PCB assembly 300. A first receiving groove 4023 is formed on the first end face of the socket 4021. The shape of the first receiving groove 4023 matches the first end of the rod body 4011, providing a dedicated and fitting receiving and guiding space for the end of the detection push rod 401. This ensures that the detection push rod 401 maintains the correct axial position during movement, preventing deviation or shaking, and guaranteeing the stability and accuracy of power reception and transmission from the detection push rod 401 to the push rod bracket 402. The abutment part 4022 is inclinedly arranged at the second end of the socket 4021, enabling the push rod bracket 402 to efficiently convert the axial linear motion transmitted from the detection push rod 401 into a vertical pressing action on the PCB button 301. As a force conversion medium and transmission bridge, the inclined structure of the abutment part 4022 cleverly solves the connection between moving parts in different directions. Regarding the connection and power transmission issues, the end face of the abutment part 4022 is set to be arranged parallel to the PCB assembly 300, so that the end face of the abutment part 4022 can form a flat frontal contact with the surface of the PCB button 301 with the largest area, avoiding point contact or line contact, thereby evenly distributing the pressing stress on the PCB button 301. This ensures reliable triggering of the switch every time and effectively prevents button damage or premature aging caused by uneven force, improving the durability of the entire circuit triggering mechanism. By integrating the vertical socket part 4021 with the inclined abutment part 4022, the push rod bracket 402 becomes a multifunctional structural component that integrates guidance, housing, motion conversion and force transmission. This highly integrated design saves internal space, simplifies the mechanism, and is conducive to the miniaturization and compact layout of the overall structure of the ear thermometer.

[0030] like Figure 1 and Figure 2As shown, in this embodiment, the detection assembly 400 further includes a reset mechanism 500, which includes a second protrusion 501 and a reset spring 502. The second protrusion 501 is disposed on the outer wall of the detection push rod 401, and the shape of the second protrusion 501 is polygonal and is used to restrict the circumferential rotation of the detection push rod 401 after assembly. The reset spring 502 is disposed on the second protrusion 501 and is used to force the detection push rod 401 to reset towards the ear cover 200. A reset spring 502 is disposed on the second protrusion 501. Its elastic force always acts on the detection push rod 401, forcing the detection push rod 401 to have a continuous tendency to move towards the ear cover 200. When the ear cover 200 is removed, the spring force can automatically and promptly push the detection push rod 401 to reset, causing it to disengage from the PCB button 301, thereby reliably cutting off the circuit. This ensures that the device can quickly respond to the removal of the ear cover 200, preparing for the next measurement and realizing the automatic cycle of the detection process. The shape of the second protrusion 501 is set to a polygonal shape (such as square, hexagon, etc.), so that the second protrusion 501 cooperates with the corresponding polygonal guide groove on the probe body 100 or probe bracket 103. Based on the aforementioned anti-rotation structure, another circumferential limiting point is provided, which forms a synergistic effect with the anti-rotation structure at the end of the detection push rod 401, working together to greatly enhance the detection resistance. The circumferential rotation of the push rod 401 ensures that it maintains the correct angle and posture during sliding, avoiding jamming or failure of action due to torsion. The outward extension of the second protrusion 501 provides a stable and reliable mounting platform and force application plane for the return spring 502, ensuring that the return spring 502 can be correctly pre-compressed and guided, so that its force can be accurately applied to the detection push rod 401 along the predetermined axis. This prevents the return spring 502 from bending, deflecting, or dislodging during compression, ensuring the reliability and consistency of the reset action. The return spring 502 is directly mounted on the second protrusion 501, forming a highly integrated design. This effectively utilizes the space on the rod body 4011 of the detection push rod 401, compactly integrating the reset function unit onto the moving parts, avoiding the occupation of a large amount of internal space, and facilitating the overall miniaturization design of the product. The structural design of the reset mechanism 500 achieves reliable automatic reset and enhanced anti-rotation protection; the reset spring 502 provides the power source for reset, while the polygonal second protrusion 501 simultaneously serves the dual functions of providing a mounting base for the reset spring 502 and enhancing circumferential limiting. The two work together to ensure that the detection push rod 401 can accurately and stably return to its initial position after each ear cover 200 is removed, thereby ensuring the reliability of the entire ear cover detection function cycle and the stability of long-term use.

[0031] like Figure 1 and Figure 3As shown, in this embodiment, the probe body 100 has a first opening end and a second opening end arranged opposite to each other. The first opening end is arranged close to the ear cover 200 and the inner side wall of the first opening end is provided with a second receiving groove 101 for installing the infrared sensor 600. The outer side wall of the probe body 100 is provided with at least two fasteners 102 for fixing the ear cover 200. A second receiving groove 101 is provided on the inner wall of the probe body 100, providing a dedicated, shape-matched mounting cavity for the infrared sensor 600. This ensures that the infrared sensor 600 can be quickly and accurately positioned and fixed on the precise axis and position required for its optical measurement, preventing optical path deviation caused by displacement or loosening of the infrared sensor 600. Structurally, this provides a fundamental guarantee for temperature measurement accuracy. At least two fasteners 102 (evenly arranged or symmetrically arranged along the circumference of the probe body 100) are provided on the outer wall of the probe body 100 for engagement with corresponding structures (such as snaps) on the ear sleeve 200. The two or more fasteners 102 form a multi-point fixation, effectively preventing relative rotation, axial slippage, or loosening of the ear sleeve 200 during use, ensuring a firm connection between the ear sleeve 200 and the probe body 100. The snap-fit ​​connection method ensures both safety and airtightness, and also facilitates quick installation and replacement of the ear cover 200, making operation simple. The second receiving groove 101 is located on the inner wall of the first opening end (closer to the ear cover 200), allowing the infrared sensor 600 to be installed as close as possible to the measurement site (ear canal), shortening the optical path, which helps reduce signal attenuation and external interference. At the same time, it allows the probe head structure to be made more compact, leaving enough space for the installation of the external ear cover 200 and avoiding interference between internal components and moving parts. The first opening end of the probe body 100 and the ear cover 200 together form a standardized measurement channel, which can guide the infrared sensor 600 to face the tympanic membrane and reduce interference from external stray light, providing a stable and consistent optical environment for each measurement, thereby obtaining accurate and repeatable temperature measurement results.

[0032] In this embodiment, the ear sleeve 200 is a transparent sleeve with a wall thickness of 0.03 mm to 0.08 mm, designed to allow infrared light to pass through. As an optical interface between the human ear canal and the infrared sensor 600, the ear sleeve 200's transparency ensures that infrared radiation emitted by the human body can penetrate the ear sleeve 200 to the maximum extent, reaching the infrared sensor 600 with almost no attenuation, thus achieving accurate temperature measurement. The extremely thin wall thickness of 0.03 mm to 0.08 mm further minimizes energy absorption and reflection losses of infrared light when penetrating the material, minimizing measurement errors introduced by the presence of the ear sleeve 200 and providing a physical guarantee for high-precision measurement. The extremely thin wall thickness also results in a very small heat capacity of the ear sleeve 200 material. The ear sleeve 200 is integrated with the probe body 1. The moment the ear tip 200 is inserted into the ear canal, the thin film reaches a temperature almost instantaneously similar to that of the ear canal skin. This significantly shortens the time required for thermal equilibrium, avoiding initial temperature measurement deviations caused by the ear tip 200 absorbing heat from the ear canal due to its own low temperature. It also improves the device's response speed, allowing users to obtain readings more quickly. If the wall thickness is too thin, below 0.03 mm, it may be difficult to guarantee the basic mechanical strength and integrity required for assembly and use, making it prone to breakage. If the wall thickness is too thick, exceeding 0.08 mm, it will significantly increase infrared penetration loss and thermal equilibrium time, affecting accuracy and speed. The thickness range of the ear tip 200 is precisely designed to meet the mechanical strength and isolation requirements for single use while optimizing optical and thermal performance. The extremely thin, flexible, transparent ear tip 200 provides almost no foreign body sensation after insertion into the ear canal, significantly improving the user's comfort compared to traditional thicker or rigid ear tips.

[0033] like Figure 4As shown, the ear thermometer of this embodiment includes the ear thermometer ear cover detection structure described above; it also includes a probe bracket 103 and an infrared sensor 600. The infrared sensor 600 is mounted on a first receiving groove 4023 in the first opening end of the probe body 100. The probe bracket 103 is inserted into the second opening end of the probe body 100 and abuts against and fixes the infrared sensor 600. The detection push rod 401 of the detection assembly 400 is slidably arranged on the probe bracket 103 and the probe body 100 to form a double-support sliding mechanism. The detection push rod 401 is slidably arranged on the probe bracket 103 and / or the probe body 100 through the second protrusion 501 to achieve circumferential limiting of the detection push rod 401. The reset spring 502 is mounted between the second protrusion 501 and the probe bracket 103 and / or the probe body 100. The structure of the probe bracket 103, which inserts into and abuts against the infrared sensor 600 from the second opening end, forms an axial clamping and fixing mechanism for the infrared sensor 600. This ensures that the infrared sensor 600 is firmly pressed into the second receiving groove 101, effectively preventing the infrared sensor 600 from loosening or shifting due to vibration or impact during assembly, transportation, or use. Structurally, this guarantees the long-term stability of the optical system and the reliability of the measurement reference, which is the fundamental premise for high-precision measurement. The detection push rod 401 is slidably arranged on the probe bracket 103 and the probe body 100, forming a double-support sliding mechanism. This gives the detection push rod 401 two spaced support points, greatly increasing its guide length and stability during sliding. It effectively prevents warping, jamming, or uneven wear that may occur due to excessive cantilever length or single-point support, ensuring smooth and accurate axial movement, thereby guaranteeing the high reliability and consistency of the earpiece detection action. The detection push rod 401 achieves circumferential limiting through its second protrusion 501 cooperating with the corresponding structure on the probe bracket 103 and / or probe body 100. This, along with the aforementioned anti-rotation structure at the end of the detection push rod 401, forms a double anti-rotation guarantee, eliminating the possibility of accidental rotation of the detection push rod 401. This ensures that the axial thrust received from the earpiece 200 can be transmitted to the PCB button 301 without deviation and in a straight line, avoiding trigger failure or malfunction due to torsional deformation. A reset spring 502 is assembled between the second protrusion 501 and the probe bracket 103 and / or the probe body 100 (including: the reset spring 502 is assembled between the second protrusion 501 and the probe bracket 103; or the reset spring 502 is assembled between the second protrusion 501 and the probe body 100; or the reset spring 502 is assembled on the second protrusion 501 and the probe bracket 103 and the probe body 100).In addition, the return spring 502 can be replaced with other elastic components with a return function, such as a spring sheet; the assembly and connection position can be flexibly selected according to the internal cavity structure of the ear thermometer, so that the compression and release stroke of the return spring 502 is precisely limited between two stable fixed structures. This not only provides a reliable mounting base for the return spring 502 and prevents it from dislodging, but also ensures that the spring force always acts along the predetermined axis, thereby providing continuous, stable and directional power for the return movement of the detection push rod 401, ensuring the reliable realization of the return function. The overall structural design of the ear thermometer first installs the infrared sensor 600, and then installs the probe bracket 103 for fixation. At the same time, the detection component 400 is integrated with these main structures, which facilitates the sequential assembly of the assembly line and improves production efficiency; at the same time, the insertability of the probe bracket 103 also provides the possibility for later maintenance or replacement. Through the dual-support sliding mechanism, multiple anti-rotation limiters, and optimized spring arrangement, a precision mechanical system with sufficient rigidity, accurate guidance, stable operation, and reliable reset is constructed. This ensures that the ear cover detection function can be executed accurately and stably under various conditions, thereby ultimately guaranteeing the measurement accuracy, safety, and long-term reliability of the ear thermometer.

[0034] like Figure 4As shown, in this embodiment, the probe body 100 is provided with a heat-insulating soft rubber 104; and / or an illumination component 700 and a light guide ring 800 are provided between the probe body 100 and the probe bracket 103. The illumination component 700 illuminates the light source toward the first opening end of the probe body 100 through the reflection and focusing effect of the light guide ring 800. By adding a thermal insulation layer of thermal insulation soft rubber 104 to the outside of the probe body 100, the thermal insulation soft rubber 104 wraps around the probe body 100, forming a thermal insulation layer. This effectively slows down and blocks the heat exchange between the internal metal or hard plastic components of the probe body 100 and the low-temperature external environment, preventing the probe body 100 from cooling down rapidly due to low ambient temperature. This maintains a relatively stable temperature at the head of the probe body 100, especially in the area near the ear cover 200, before measurement, reducing the temperature difference with the human ear canal. This significantly reduces temperature deviation caused by heat conduction, playing a crucial role in ensuring initial measurement accuracy, especially in low-temperature environments. The soft texture of the thermal insulation soft rubber 104, compared to a hard plastic shell, avoids the discomfort caused by cold metal or hard plastic directly contacting the user's ear skin, improving the product's comfort and user-friendly design. By integrating the lighting and light path guidance system, the light emitted by the lighting component 700 is precisely guided and concentrated onto the first opening end of the probe body 100, i.e., the inside of the ear canal, through the reflection and focusing effect of the light guide ring 800. This provides good visual illumination for users operating in dimly lit environments, helping them to more accurately align the ear thermometer probe with the tympanic membrane, avoiding measurement errors caused by improper insertion angle or depth, and improving the success rate and reliability of the first measurement. The reflection and focusing effect of the light guide ring 800 can homogenize and guide the light emitted by the LED point light source, forming a uniform, soft, and directional light spot that illuminates the inside of the ear canal, avoiding the glare or discomfort that may be caused by direct illumination from a strong point light source, thus optimizing the user experience. By placing the lighting component 700 in the internal space between the probe body 100 and the probe bracket 103 and guiding the light through the light guide ring 800, a highly integrated design is achieved. There is no need to add an additional protruding lighting module to the outside of the probe body 100, maintaining the overall integrity and streamlined appearance of the product while realizing additional functions.

[0035] like Figure 4As shown, in this embodiment, it also includes a panel 900 and a lower housing 1000. The panel 900 and the lower housing 1000 are sealed together to form a closed inner cavity. The inner wall of the panel 900 is attached to the PCB assembly 300 via a sealing structure and forms a button channel for the control button 901 to slide. The probe body 100 and / or the probe bracket 103 are fixedly connected to the lower housing 1000. The panel 900 is sealed to the lower housing 1000, forming a closed inner cavity that completely seals and protects precision electronic and mechanical components such as the PCB assembly 300 and the detection assembly 400. This effectively prevents dust, moisture, liquids (such as cleaning and disinfecting agents), or other contaminants from entering the interior, avoiding potential problems such as short circuits, oxidation corrosion, or mechanical jamming. This significantly improves the product's reliability and durability in complex operating environments. The inner wall of the panel 900 is sealed to the PCB assembly 300, simultaneously forming a button channel for the sliding of the control button 901. This cleverly resolves the contradiction between sealing and operability, ensuring a seal between the panel 900 and the PCB assembly 300 while providing a precise and stable tactile channel for the user's button operation. This achieves a balance between sealing protection and user-friendly operation, ensuring the product's reliability and durability. While possessing dustproof and waterproof capabilities (such as IPX2 rating), the Ming'er thermometer does not affect the core user interaction functions. The probe body 100 and / or probe bracket 103 are fixedly connected to the lower housing 1000, directly or indirectly fixing and positioning the entire temperature measurement module (optical core) and detection module (mechanical core). This avoids minor displacements or vibrations caused by unstable component fixation, ensuring the long-term stability of the optical path reference of the infrared sensor 600 and the sliding trajectory of the detection push rod 401, thereby indirectly guaranteeing the measurement accuracy and reliability of the detection function. The main functional modules are fixed to the lower housing 1000 respectively, and then covered and sealed by the panel 900, forming a clear modular assembly logic. This facilitates sequential assembly on the production line and subsequent disassembly and maintenance (such as battery replacement and PCB repair), improving the product's manufacturability and serviceability.

[0036] In practice, an earpiece detection structure for an ear thermometer is provided, aiming to improve the measurement accuracy of ear thermometers and solve the problem of cross-infection during temperature measurement. The earpiece detection structure for an ear thermometer includes: The probe body 100 has a first opening end and a second opening end that are arranged opposite to each other. Infrared rays emitted by the user's eardrum are transmitted to the infrared sensor 600 in the ear cover 200 body through the first opening end. The probe body 100 is a rigid plastic body. A second receiving groove 101 is recessed on the surface of the probe body 100 for installing the infrared sensor 600. The probe body 100 is provided with at least two or more fasteners 102 for fixing the ear cover 200.

[0037] The heat-insulating soft rubber 104 is sleeved on the outer wall of the probe body 100 and is located in the receiving groove outside the probe body 100. The heat-insulating soft rubber 104 is a soft plastic sleeve.

[0038] Ear sleeve 200 is fitted onto the outer wall of probe body 100. Ear sleeve 200 is a soft transparent plastic sleeve used to transmit infrared light and improve detection accuracy. The wall thickness is 0.03mm-0.08mm.

[0039] The detection push rod 401 is inserted into the push rod limiting hole of the probe body 100 and the probe bracket 103. The detection push rod 401 is a rigid plastic rod with an asymmetrical protrusion (second protrusion 501) at the front end for connecting to the probe bracket 103 and for accurate positioning. The detection push rod 401 has a protrusion (first protrusion 4013) at the end for positioning and fixing to the first receiving groove 4023 on the push rod bracket 402.

[0040] The push rod bracket 402 is sleeved above the probe bracket 103 and is provided with an anti-misalignment mounting position (mounting groove). The bracket contact surface of the push rod bracket 402 is parallel to the PCB assembly 300 and is used to press the PCB button 301. The large contact surface of the push rod bracket 402 can improve the reliability of the detection opening and closing. The push rod bracket 402 is provided with a first receiving groove 4023.

[0041] The push rod spring (reset spring 502) is sleeved in the detection push rod 401 to automatically reset the detection push rod 401.

[0042] The probe bracket 103 has a raised cylindrical structure for pressing and fixing the infrared sensor 600; it also has a recessed push rod guide hole for guiding the detection push rod 401.

[0043] The button features a waterproof sealing structure with an anti-misinstallation structure (installation groove) in the panel sealing groove, which is interference-fitted with the sealing ring. The sealing ring is pressed against the fixed assembly PCB component 300, which meets the IPX2 requirement.

[0044] In use, the ear cover 200 is initially fastened to the probe body 100 by the buckle 102. When manual force is applied, the detection push rod 401, which originally protrudes from the surface of the probe body 100, is pushed towards the circuit board (PCB assembly 300). At this time, the reset spring 502 on the detection push rod 401 is in a tensioned state. The end of the detection push rod 401 is connected to the push rod bracket 402. The end of the push rod bracket 402 away from the detection push rod 401 has a contact surface. This contact surface is large enough to contact the PCB button 301. At this time, the PCB button 301 is pressed to turn on, and the ear thermometer can be turned on for measurement. When the ear tip 200 needs to be replaced, it is manually pulled out. At this time, due to the elasticity of the reset spring 502, the detection push rod 401 is reset to the surface of the protruding probe body 100. The end of the detection push rod 401 drives the push rod bracket 402 away from the PCB button 301. At this time, the button is disconnected and the ear thermometer cannot measure normally.

[0045] This invention improves the connection reliability between the detection push rod 401 and the push rod bracket 402 by setting a push rod bracket 402 with a receiving groove inside to accommodate the protrusion of the detection push rod 401. It significantly reduces the possibility of axial movement, radial offset or angular wobble of the detection push rod 401 relative to the push rod bracket 402 during operation (such as when force is applied, reset or subjected to external vibration). The existing method of using a reset rod to contact the reset switch is prone to reset signal detection failure, signal lag or signal strength fluctuation due to assembly tolerance, mechanical vibration or long-term wear, resulting in measurement errors.

[0046] This invention simplifies the installation of the ear cover 200. The ear cover 200 is manually pulled out, and when testing is required, the ear cover 200 is snapped into the probe body 100, and the detection push rod 401 is pushed in to connect the reset switch, thus simplifying the installation steps and reducing production costs.

[0047] The beneficial effects of this invention are as follows: 1. By including a thermal insulation soft rubber 104 structure on the outer wall of the probe body 100, the measurement accuracy of the ear thermometer can be improved. 2. By adding an ear cover 200 structure to the outside of the probe body 100, the problem of cross-infection during temperature measurement is solved and the user experience is improved; 3. Increasing the contact area of ​​the push rod bracket 402 can increase the reliability of the detection switch opening and closing.

[0048] Any matters not covered in this utility model are common knowledge.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An ear thermometer ear cover detection structure, comprising a probe body (100), an ear cover (200), and a PCB assembly (300), wherein the ear cover (200) is detachably fitted onto the probe body (100), and the PCB assembly (300) and the ear cover (200) are arranged at intervals, characterized in that, A PCB button (301) is provided on the PCB assembly (300), and a detection component (400) is provided between the ear cover (200) and the PCB button (301). By attaching the earpiece (200) to the probe body (100) to push the detection component (400) to contact the PCB button (301), the PCB component (300) is opened; or The PCB assembly (300) is turned off by removing the ear cover (200) from the probe body (100) to reset the detection assembly (400) and move it away from the PCB button (301).

2. The ear cover detection structure for an ear thermometer according to claim 1, characterized by The detection assembly (400) includes a detection push rod (401) and a push rod bracket (402). The detection push rod (401) is slidably arranged along the assembly direction of the earpiece (200) on the probe body (100). The push rod bracket (402) is slidably arranged outside the PCB button (301) and is plugged into the detection push rod (401).

3. The ear cover detection structure for an ear thermometer according to claim 2, characterized by The detection push rod (401) includes a rod body (4011), the first end of which is used to abut against the ear cover (200), and the second end of which is set as a plug section (4012). The side wall of the plug section (4012) extends radially outward to form a first protrusion (4013). The plug section (4012) and the first protrusion (4013) are inserted into the cavity of the push rod bracket (402) to realize the connection between the rod body (4011) and the push rod bracket (402), and the plug section (4012) and the first protrusion (4013) restrict the relative circumferential rotation between the rod body (4011) and the push rod bracket (402).

4. The ear cover detection structure for an ear thermometer according to claim 2, characterized by The push rod bracket (402) includes a socket (4021) and an abutment (4022). The first end face of the socket (4021) is provided with a first receiving groove (4023) for matching the first end of the rod body (4011) along the axial direction. The abutment (4022) is arranged at an incline at the second end of the socket (4021) and the end face of the abutment (4022) is arranged parallel to the PCB assembly (300).

5. The ear cover detection structure for an ear thermometer according to any one of claims 2 to 4, characterized in that, The detection assembly (400) also includes a reset mechanism (500), which includes a second protrusion (501) and a reset spring (502). The second protrusion (501) is provided on the outer wall of the detection push rod (401), and the second protrusion (501) has a polygonal shape and is used to restrict the circumferential rotation of the detection push rod (401) after assembly. The reset spring (502) is arranged on the second protrusion (501) and is used to force the detection push rod (401) to reset towards the ear cover (200).

6. The ear cover detection structure for an ear thermometer according to any one of claims 1 to 4, characterized in that, The probe body (100) has a first open end and a second open end arranged opposite to each other. The first open end is arranged close to the ear cover (200) and the inner side wall of the first open end is provided with a second receiving groove (101) for installing an infrared sensor (600). The outer side wall of the probe body (100) is provided with at least two fasteners (102) for fixing the ear cover (200).

7. The ear cover detection structure for an ear thermometer according to any one of claims 1 to 4, characterized in that, The ear cover (200) is made of transparent material and has a wall thickness of 0.03 mm to 0.08 mm, which is used to transmit infrared rays.

8. An ear thermometer, characterized by, Includes the ear cover detection structure for an ear thermometer as described in any one of claims 1 to 7; It also includes a probe bracket (103) and an infrared sensor (600). The infrared sensor (600) is mounted on a first receiving groove (4023) in the first opening end of the probe body (100). The probe bracket (103) is inserted from the second opening end of the probe body (100) and abuts against and fixes the infrared sensor (600). The detection push rod (401) of the detection assembly (400) is slidably arranged on the probe bracket (103) and the probe body (100) to form a double-support sliding mechanism. The detection push rod (401) is slidably arranged on the probe bracket (103) and / or the probe body (100) through the second protrusion (501) to achieve circumferential limiting of the detection push rod (401). The reset spring (502) is assembled between the second protrusion (501) and the probe bracket (103) and / or the probe body (100).

9. The ear thermometer according to claim 8, wherein, The probe body (100) is covered with a heat-insulating soft rubber (104); and / or An illumination component (700) and a light guide ring (800) are provided between the probe body (100) and the probe bracket (103). The illumination component (700) is focused by the reflection of the light guide ring (800) so that the light source is directed toward the first opening end of the probe body (100).

10. The ear thermometer according to claim 9, wherein, It also includes a panel (900) and a lower housing (1000), the panel (900) and the lower housing (1000) being sealed together to form a closed inner cavity; The inner wall of the panel (900) is attached to the PCB assembly (300) via a sealing structure and forms a button channel for the control button (901) to slide. The probe body (100) and / or probe bracket (103) are fixedly connected to the lower housing (1000).

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