An infrared thermometer convenient for protection

Abstract

The present application relates to an infrared thermometer which is easy to protect and to the technical field of thermometers, which comprises a cylindrical shell and a temperature measuring element located in the shell, a display screen for feeding back numerical values ​​is embedded on the outer circumference of the shell, and a measuring hole for inserting a temperature measuring end of the temperature measuring element is provided on the outer circumference of the shell away from the display screen; an installation opening for inserting the temperature measuring element and a cover plate for blocking the installation opening are provided at one end of the shell, and a press switch is provided on the other end of the shell; an end cover is rotatably provided on the cover plate, and the end cover can rotate around the axis of the shell, and a protective plate extending to the outer circumference of the shell is fixed on the outer circumference of the end cover, and the protective plate can be rotated to the outer side of the measuring hole to block it; in the present application, when the thermometer is not in use, the protective plate is rotated to the outer side of the measuring hole along with the end cover, thereby blocking the measuring hole and reducing the possibility of external dust or other impurities adhering to the exposed temperature measuring end.

Description

Technical Field

[0001] The present application relates to the technical field of thermometers, and in particular to an infrared thermometer that is easy to protect. Background Art

[0002] In the current market, infrared thermometers have become an indispensable temperature monitoring tool in many places such as hospitals, schools, and offices due to their non-contact temperature measurement characteristics. Most of these thermometers use the principle of infrared reflection to achieve fast and accurate measurement of human body temperature. However, with the continuous improvement of people's quality of life and the continuous advancement of science and technology, the market's requirements for temperature measurement tools are becoming increasingly stringent, pursuing both convenience and emphasizing low energy consumption, which undoubtedly brings new challenges and opportunities to the research and development of thermometers.

[0003] To meet this market demand, a new type of infrared thermometer came into being. The thermometer integrates a shell, a temperature measuring part and a shell cover. The temperature measuring part includes key components such as an infrared sensor, a circuit board, a micro battery and a push switch. A mounting through hole is cleverly opened on the shell, so that the temperature measuring end of the infrared sensor can be accurately extended to achieve long-distance temperature measurement. When using it, the user only needs to hold the thermometer and aim the temperature measuring end at the part to be measured to quickly obtain body temperature data. In addition, the thermometer also has an intelligent power on and off function, which can be manually operated by pressing the switch, and can automatically shut down after being idle for a period of time, effectively saving energy.

[0004] However, although this thermometer performs well in terms of convenience and energy consumption, in actual use, its temperature measuring end is exposed to the outside and is easily interfered by external factors such as dust and impurities, thus affecting the temperature measurement accuracy. This problem not only reduces the practicality of the thermometer, but also increases the cleaning burden of the user. In order to keep the temperature measuring end clean, users often need to use professional tools for regular cleaning, which undoubtedly consumes a lot of time and energy, and there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide an infrared thermometer that is easy to protect, so as to solve the problem in the above-mentioned related technologies that the exposed temperature measuring end may be adhered with impurities, affecting the subsequent detection accuracy and being inconvenient to clean.

[0006] The present application provides an infrared thermometer that is easy to protect and adopts the following technical solution:

[0007] An infrared thermometer that is easy to protect, comprises a cylindrical shell, a temperature measuring element located in the shell, a display screen for feeding back numerical values ​​is embedded on the outer circumference of the shell, and a measuring hole for inserting the temperature measuring end of the temperature measuring element is provided on the outer circumference of the shell away from the display screen; an installation opening for installing the temperature measuring element is provided at one end of the shell, and a cover plate for blocking the installation opening is fixedly provided, and a push switch is provided on the other end of the shell; an end cap is rotatably provided on the cover plate, and the end cap can rotate around the axis of the shell, and a protective plate extending to the outer circumference of the shell is fixedly provided on the outer peripheral edge of the end cap, and the protective plate can be rotated to the outer side of the measuring hole to block it.

[0008] By adopting the above technical solution, due to the coordinated setting of the protective plate on the end cover, when the thermometer is not in use, the protective plate is rotated along with the end cover to the outer side of the measuring hole, thereby blocking the measuring hole, reducing the possibility of external dust or other impurities adhering to the exposed temperature measuring end, and improving the performance of the infrared thermometer.

[0009] Optionally, a limiting groove for inserting the end cover is formed on the outer edge of the end of the cover plate away from the shell; a first magnetic block is embedded on the inner side of the end cover, and a second magnetic block is embedded on the cover plate to abut against and attract the first magnetic block.

[0010] By adopting the above technical solution, after the end cover is rotatably sleeved on the outer periphery of the cover plate, due to the matching arrangement of the first magnetic block and the second magnetic block, the first magnetic block on the end cover abuts against and attracts the second magnetic block on the cover plate, thereby simultaneously reducing the possibility of the end cover falling off the cover plate in a natural state while ensuring the rotation arrangement of the end cover.

[0011] Optionally, a reed switch for controlling the on and off of the temperature measuring component is fixedly provided on the outer surface of the cover plate, and a control magnetic block is fixedly provided on the inner surface of the end cover; when the protective plate blocks the measuring hole, the control magnetic block can trigger the reed switch to control the disconnection of the temperature measuring component; when the protective plate releases the blocking of the measuring hole, the control magnetic block connects the temperature measuring component through the reed switch.

[0012] By adopting the above technical solution, when the protective plate blocks the measuring hole, the control magnet will rotate to the trigger position, causing the temperature measuring component to be disconnected, thereby realizing intelligent control of the thermometer. The specific principle will not be repeated here; and when the protective plate is offset from the measuring hole, it will trigger another state of the reed switch, thereby connecting the temperature measuring component and enabling normal use.

[0013] Optionally, there are two protective plates, which are symmetrically arranged on the outer periphery of the end cover.

[0014] By adopting the above technical solution, when the thermometer is not in use, due to the symmetrical arrangement of the protective plate, the display screen and the temperature measuring end can be protected and shielded at the same time, reducing the possibility of external dust or other impurities adhering to the outer surface of the display screen.

[0015] Optionally, two opposite limit plates are fixed on the outer peripheral surface of the end cover, and the opposite side surfaces of one end of the protective plate are rotatably connected to the inner side surfaces of the limit plates. The protective plate can be rotated in the direction of approaching and moving away from the shell to a state parallel to the axis of the shell and fixed, and the end cover can be rotated around the axis of the shell and adjusted and fixed.

[0016] By adopting the above technical solution, due to the hinged arrangement of the limit plate and the protective plate, when the protective plate rotates with the end cover to a state of being misaligned with the measuring hole and is fixed, the protective plate is rotated in a direction away from the shell to a state parallel to the axis of the shell and fixed. In this state, the user can hold the sides of the two protective plates away from each other for use, thereby being able to better hold the infrared thermometer and improving the corresponding use performance.

[0017] Optionally, a clamping groove is provided on the side of the protective plate facing the shell, and the inner wall of the clamping groove is a curved surface.

[0018] By adopting the above technical solution, when the two protective plates are rotated in the direction away from the shell to a state parallel to the shell axis and fixed, the two clamping grooves are on the sides of the two protective plates away from each other. In this state, the user can place his fingers into the clamping grooves to better hold the two protective plates.

[0019] Optionally, a guiding slope is provided on the side edge of the limiting plate away from the end cover.

[0020] By adopting the above technical solution, due to the setting of the guiding inclined surface, it is easy for the protective plate to rotate along the guiding inclined surface to between the two limit plates, thereby reducing the difficulty of rotating the protective plate and improving the corresponding use performance.

[0021] Optionally, an elastic positioning member is provided on the inner side surface of the end cover, and the cover plate is evenly provided with a plurality of third positioning grooves for inserting the elastic positioning member on the inner side surface of the limiting groove around its own axis.

[0022] By adopting the above technical solution, when the protective plate rotates with the end cover to a state of being misaligned or overlapped with the measuring hole, due to the matching arrangement of the elastic positioning piece and the third positioning groove, the elastic positioning piece on the end cover is inserted into the corresponding third positioning groove, thereby fixing the end cover in this state.

[0023] Optionally, elastic clips are provided on the two opposite side surfaces of the protective plate, and the limiting plate is provided with a first positioning groove and a second positioning groove for inserting the elastic clips; one side of the protective plate is in a state of being in contact with the outer side surface of the shell when the elastic clip is inserted into the first positioning groove, and the protective plate is rotated outward to a state parallel to the axis of the shell when the elastic clip is inserted into the second positioning groove.

[0024] By adopting the above technical solution, due to the matching arrangement of the elastic clip, the first positioning groove and the second positioning groove, when the elastic clip is snapped into the first positioning groove, one side of the protective plate is in contact with the outer side surface of the shell; when the elastic clip is snapped into the second positioning groove, the protective plate rotates outward to a state parallel to the axis of the shell; thereby locking the two states of the protective plate; thereby achieving snap-fit ​​locking of the two states of the protective plate.

[0025] Optionally, guide blocks are symmetrically fixed on the outer circumferential surface of the shell and are located between the measuring hole and the display screen; guide bevels are provided on the side edges of the guide blocks, and the elastic clip can be disengaged from the first positioning groove when the protective plate abuts and rotates along the guide bevels.

[0026] By adopting the above technical solution, when the protective plate is in contact with the outer peripheral surface of the shell, due to the installation arrangement of the guide block, when the protective plate rotates along the guide slope on the guide block as the end cover abuts, the elastic clip can be disengaged from the first positioning groove, thereby reducing the difficulty of rotating the protective plate away from the shell.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] Due to the coordinated setting of the protective plate on the end cover, when the thermometer is not in use, the protective plate is rotated along with the end cover to the outer side of the measuring hole, thereby covering the measuring hole, reducing the possibility of external dust or other impurities adhering to the exposed temperature measuring end, and improving the performance of the infrared thermometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0031] Figure 2 It is a schematic diagram of the explosion structure of Example 1 of the present application;

[0032] Figure 3 It is a cross-sectional structural schematic diagram of the installation and matching of the end cover in Example 1 of the present application;

[0033] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application;

[0034] Figure 5 is a schematic diagram of the structure of an embodiment of the present application showing that the protective plate is locked after being rotated away from the housing;

[0035] Figure 6 It is a partial cross-sectional structural schematic diagram of the installation and matching of the end cover in Example 2 of the present application;

[0036] Figure 7 yes Figure 6 A magnified schematic diagram of part A;

[0037] Figure 8 It is a partial cross-sectional structural schematic diagram of the installation and matching of the protective plate in Example 2 of the present application;

[0038] Fig. 9 yes Figure 8 Schematic diagram of the enlarged portion B.

[0039] In the figure, 1, shell; 11, measuring hole; 12, mounting port; 13, push switch; 14, guide block; 141, guide slope; 2, temperature measuring part; 3, display screen; 4, cover plate; 41, limit sink groove; 411, third positioning groove; 42, second magnetic block; 43, reed switch; 5, end cover; 51, protective plate; 511, first placement groove; 512, clamping groove; 52, first magnetic block; 53, control magnetic block; 54, limit plate; 541, guide slope; 542, first positioning groove; 543, second positioning groove; 55, elastic clamping part; 551, compression spring; 552, arc-shaped protrusion; 56, second placement groove; 6, elastic positioning part; 61, spring; 62, arc-shaped positioning block. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0041] Embodiment 1:

[0042] Reference Figure 1 , Figure 2 and Figure 3 , an infrared thermometer convenient for protection, comprising a cylindrical shell 1, a temperature measuring element 2 located in the shell 1, a display screen 3 for feedback of numerical values ​​embedded on the outer circumference of the shell 1, and a measuring hole 11 for inserting the temperature measuring end of the temperature measuring element 2 is opened on the outer circumference of the shell 1 away from the display screen 3;

[0043] One end of the housing 1 is provided with an installation opening 12 for installing the temperature measuring element 2, and a cover plate 4 is fixedly provided to block the installation opening 12. The cover plate 4 and the edges of the installation opening 12 of the housing 1 are fastened by screws. A push switch 13 is provided on the other end of the housing 1; an end cover 5 is rotatably provided on the cover plate 4, and the end cover 5 can rotate around the axis of the housing 1. A protective plate 51 extending to the outer peripheral surface of the housing 1 is fixedly provided on the outer peripheral edge of the end cover 5;

[0044] When the infrared thermometer is in use, the user controls the end cover 5 to rotate around the axis of the shell 1, so that the protective plate 51 rotates to a state where it is misaligned with the outer side of the measuring hole 11; when the thermometer is not in use, the protective plate 51 is rotated to the outer side of the measuring hole 11 to cover it.

[0045] Reference Figure 2 and Figure 3 A limiting recessed groove 41 for inserting the end cover 5 is provided on the outer edge of the end of the cover plate 4 away from the shell 1; a first magnetic block 52 is embedded on the inner side of the end cover 5, and a second magnetic block 42 is embedded on the cover plate 4, which abuts against the first magnetic block 52 and attracts each other; the first magnetic block 52 and the second magnetic block 42 are both ordinary magnet blocks, which are used to realize the rotation connection between the end cover 5 and the cover plate 4, and reduce the possibility of the end cover 5 falling off from the cover plate 4 in a natural state.

[0046] Reference Figure 2 and Figure 3 The temperature measuring component 2 includes a PBC board, a battery, an infrared sensor, etc. installed in the shell 1, wherein the temperature measuring end refers to the probe of the infrared sensor, and the relevant specific structure is not repeated here; a reed switch 43 for controlling the on and off of the temperature measuring component 2 is fixedly provided on the outer surface of the cover plate 4, wherein a control magnetic block 53 is fixedly provided on the inner side surface of the end cover 5, and the control magnetic block 53 can trigger the reed switch 43 to control the disconnection of the temperature measuring component 2 when the protective plate 51 blocks the measuring hole 11; the control magnetic block 53 connects the temperature measuring component 2 through the reed switch 43 when the protective plate 51 releases the blocking of the measuring hole 11.

[0047] The rotation of the control magnet 53 is used to trigger the reed switch 43, thereby controlling the on and off of the temperature measuring component 2. When the protective plate 51 blocks the measuring hole 11, the control magnet 53 is rotated to the trigger position, causing the temperature measuring component 2 to be disconnected, thereby achieving physical power off of the thermometer. The specific principle will not be repeated here.

[0048] The implementation principle of the embodiment of the present application is:

[0049] When the thermometer is used, the user controls the end cover 5 to rotate around the axis of the housing 1, so that the protective plate 51 rotates to a state where it is misaligned with the outer side of the measuring hole 11. In this state, the control magnetic block 53 triggers the reed switch 43 to operate the temperature measuring element 2. In the misaligned state, the user can also control the opening and closing of the thermometer by pressing the push switch 13.

[0050] In addition, when the thermometer is not used for a long time in the misaligned state, the thermometer will automatically turn off and enter a sleep state even if the push switch 13 is not pressed; when the thermometer is not in use, the user can rotate the protective plate 51 to the outer side of the measuring hole 11 to cover it. In this state, the control magnetic block 53 will trigger the reed switch 43, causing the temperature measuring component 2 to stop running, physically cut off its power, and force it to close.

[0051] Embodiment 2:

[0052] Reference Figure 4 The difference between the embodiment of the present application and embodiment 1 is that there are two protective plates 51, and the two protective plates 51 are symmetrically arranged on the outer periphery of the end cover 5, and the cross-section of the end of the protective plate 51 away from the end cover 5 is enlarged, so that the two protective plates 51 can simultaneously protect and shield the display screen 3 and the temperature measuring end.

[0053] Reference Figure 5 and Figure 6 Two opposite limiting plates 54 are fixedly arranged on the outer circumference of the end cover 5, wherein the opposite side surfaces of one end of the protection plate 51 are rotatably connected to the inner side surfaces of the limiting plates 54, and a guiding inclined surface 541 is arranged on the side edge of the limiting plate 54 away from the end cover 5; the protection plate 51 can be rotated in the direction of approaching and moving away from the shell 1 respectively to a state parallel to the axis of the shell 1 and fixed, and the end cover 5 can be rotated around the axis of the shell 1 and adjusted and fixed;

[0054] When the protective plate 51 rotates with the end cover 5 to a state where it is misaligned with the measuring hole 11, the protective plate 51 is rotated along the guide slope 541 in a direction away from the shell 1 to a state parallel to the axis of the shell 1 and fixed. In this state, the user can hold the sides of the two protective plates 51 away from each other for use, so as to better hold the infrared thermometer and improve the corresponding performance.

[0055] Reference Figure 6 and Figure 7 An elastic positioning member 6 is arranged on the inner side of the end cover 5, wherein the elastic positioning member 6 includes a spring 61 and an arc-shaped positioning block 62, and a second placement groove 56 for the spring 61 and the arc-shaped positioning block 62 is opened on the inner side of the end cover 5, and the spring 61 presses the arc-shaped positioning block 62, so that a part of the arc-shaped positioning block 62 protrudes from the opening of the second placement groove 56, and the outer side of the protruding part is an arc surface, and the arc length corresponding to the arc surface is an inferior arc; the cover plate 4 is evenly opened with a plurality of third positioning grooves 411 for the elastic positioning member 6 to be inserted around its own axis on the inner side of the limiting sink groove 41;

[0056] When the protection plate 51 rotates along with the end cover 5 to a state where it is misaligned or overlapped with the measuring hole 11 , the elastic positioning member 6 is inserted into the corresponding third positioning groove 411 .

[0057] Reference Figure 8 and Fig. 9 , elastic clamping members 55 are provided on opposite sides of the protective plate 51, wherein the elastic clamping members 55 include a compression spring 551 and an arc-shaped protrusion 552, and a first placement groove 511 is provided on the protective plate 51 for the compression spring 551 and the arc-shaped protrusion 552 to be placed, and the compression spring 551 presses one side of the arc-shaped protrusion 552, so that a part of the arc-shaped protrusion 552 protrudes from the opening of the first placement groove 511, and the outer side surface of the protruding part is an arc surface, and the arc length corresponding to the arc surface is a minor arc;

[0058] In addition, a first positioning groove 542 and a second positioning groove 543 for inserting the elastic clip 55 are provided on the limit plate 54; when the elastic clip 55 is inserted into the first positioning groove 542, one side of the protective plate 51 is in contact with the outer side surface of the shell 1; when the elastic clip 55 is inserted into the second positioning groove 543, the protective plate 51 rotates outward to a state parallel to the axis of the shell 1; thereby locking the two states of the protective plate 51.

[0059] Reference Figure 4 and Figure 5 A clamping groove 512 is provided on the side of the protective plate 51 facing the housing 1, and the inner wall of the clamping groove 512 is an arc surface; when the two protective plates 51 are rotated away from the housing 1 to a state parallel to the axis of the housing 1 and fixed, the two clamping grooves 512 are located on the sides of the two protective plates 51 away from each other. In this state, the user can put his fingers into the clamping grooves 512 to better hold the two protective plates 51;

[0060] A guide block 14 is symmetrically fixed on the outer circumferential surface of the shell 1 and is located between the measuring hole 11 and the display screen 3; wherein the side edges of the guide block 14 are provided with a guide slope 141; when the protective plate 51 is in contact with the outer circumferential surface of the shell 1, the protective plate 51 rotates along the guide slope 141 as the end cover 5 abuts, and the elastic clip 55 can escape from the first positioning groove 542.

[0061] The implementation principle of the embodiment of the present application is:

[0062] When the protective plate 51 rotates with the end cover 5 to a state where it is misaligned with the measuring hole 11, the elastic positioning member 6 is inserted into the corresponding third positioning groove 411, and the protective plate 51 is rotated in a direction away from the shell 1 to a state parallel to the axis of the shell 1 and fixed, so that the elastic clip 55 is disengaged from the first positioning groove 542 and inserted into the second positioning groove 543. In this state, the user can hold the sides of the two protective plates 51 away from each other, which is more convenient to use the thermometer.

[0063] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0064] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An infrared thermometer that is easy to protect, characterized in that: The invention comprises a cylindrical shell (1) and a temperature measuring element (2) located in the shell (1); a display screen (3) for feeding back numerical values ​​is embedded on the outer peripheral surface of the shell (1); and a measuring hole (11) for inserting a temperature measuring end of the temperature measuring element (2) is provided on the outer peripheral surface of the shell (1) away from the display screen (3); One end of the shell (1) is provided with an installation opening (12) for installing a temperature measuring element (2), and a cover plate (4) is fixedly provided to block the installation opening (12); the other end of the shell (1) is provided with a push switch (13); an end cover (5) is rotatably provided on the cover plate (4); the end cover (5) is rotatable around the axis of the shell (1); a protective plate (51) is fixedly provided on the outer peripheral edge of the end cover (5) and extends to the outer peripheral surface of the shell (1); the protective plate (51) is rotatable to the outer side of the measuring hole (11) to cover it; The number of the protective plates (51) is two, and the two protective plates (51) are symmetrically arranged on the outer periphery of the end cover (5); two opposite limiting plates (54) are fixedly arranged on the outer periphery of the end cover (5); the two opposite side surfaces at one end of the protective plate (51) are rotatably connected to the inner side surfaces of the limiting plates (54); the protective plate (51) can be rotated in directions approaching and away from the shell (1) to a state parallel to the axis of the shell (1) and fixed; and the end cover (5) can be rotated and adjusted around the axis of the shell (1) and fixed; The protective plate (51) is provided with elastic clamping parts (55) on two opposite sides, and the limiting plate (54) is provided with a first positioning groove (542) and a second positioning groove (543) for the elastic clamping part (55) to be inserted; one side of the protective plate (51) is in a state of being in contact with the outer side surface of the shell (1) when the elastic clamping part (55) is clamped into the first positioning groove (542), and the protective plate (51) is rotated outward to a state parallel to the axis of the shell (1) when the elastic clamping part (55) is clamped into the second positioning groove (543); A guide block (14) is symmetrically fixed on the outer peripheral surface of the shell (1) and is located between the measuring hole (11) and the display screen (3); a guide slope (141) is provided on the side edge of the guide block (14), and the elastic clamping member (55) can be disengaged from the first positioning groove (542) when the protective plate (51) abuts and rotates along the guide slope (141).

2. The infrared thermometer for easy protection according to claim 1, characterized in that: A limiting recessed groove (41) for inserting the end cover (5) is provided on the outer edge of the end of the cover plate (4) away from the shell (1); a first magnetic block (52) is embedded on the inner side surface of the end cover (5); and a second magnetic block (42) is embedded on the cover plate (4) and abuts against the first magnetic block (52) and attracts each other.

3. The infrared thermometer for easy protection according to claim 1, characterized in that: A reed switch (43) for controlling the on / off of the temperature measuring element (2) is fixedly disposed on the outer side surface of the cover plate (4), and a control magnetic block (53) is fixedly disposed on the inner side surface of the end cover (5); The control magnetic block (53) can trigger the reed switch (43) to control the temperature measuring component (2) to be disconnected when the protective plate (51) blocks the measuring hole (11); and the control magnetic block (53) enables the temperature measuring component (2) to be connected through the reed switch (43) when the protective plate (51) releases the blocking of the measuring hole (11).

4. The infrared thermometer for easy protection according to claim 1, characterized in that: A clamping groove (512) is provided on the side of the protective plate (51) facing the shell (1), and the inner wall of the clamping groove (512) is a curved surface.

5. The infrared thermometer for easy protection according to claim 1, characterized in that: A guiding inclined surface (541) is provided on the side edge of the limiting plate (54) away from the end cover (5).

6. The infrared thermometer for protection according to claim 1, characterized in that: An elastic positioning member (6) is arranged on the inner side surface of the end cover (5), and a plurality of third positioning grooves (411) for inserting the elastic positioning member (6) are evenly formed around the axis of the cover plate (4) on the inner side surface of the limiting recess (41).

Images