Electronic thermometer

Abstract

The utility model discloses an electronic thermometer which comprises an electronic mainboard, the electronic mainboard is provided with a charging and discharging circuit, and the charging and discharging circuit is provided with a first charging contact structure and a second charging contact structure. The first charging contact structure is conductively connected with the first annular conductive structure, and the first annular conductive structure is arranged around the periphery of the temperature measurement main body and is exposed, so that the first annular conductive structure can be electrically contacted with a first conductive contact of an external charging seat at any position in the circumferential direction; the second charging contact structure is electrically connected with the second annular conductive structure, and the second annular conductive structure is located in the tail area of the temperature measurement body so that the second annular conductive structure can make electrical contact with a second conductive contact of the charging base at any position in the circumferential direction. The first annular conductive structure and the second annular conductive structure are arranged in the circumferential direction of the shell, so that electric contact can be achieved at any angle within the range of 360 degrees when the shell is matched with a charging base for charging, and the problem that charging needs to be conducted below a specific angle traditionally, and consequently use is inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measuring instruments, in particular to an electronic thermometer. Background Art

[0002] A food thermometer is used to measure the temperature of heated food in order to control the heat and the steaming and baking time of food, so as to prevent the food from losing its delicious taste due to being heated for too long and at too high a temperature.

[0003] This type of thermometer usually has its own power supply, which provides power to the entire thermometer. For example, patent number ZL202123448884.1 discloses such a technology, which includes a temperature measuring body with an inner chamber, one end of the temperature measuring body is connected to an insertion part for inserting into food, wherein at least the temperature measuring body or the insertion part is provided with a temperature sensor for detecting the internal temperature of the food, the temperature sensing part of the temperature sensor is in contact with the inner wall of the temperature measuring body or the inner wall of the insertion part, and the inner chamber is provided with a control board, and the temperature sensor and the control board are connected: the electronic thermometer has a compact and convenient structure, a reasonable design, is easy to carry and use, and can be recharged and used repeatedly. Among them, it should be noted that in this technology, the charging and discharging electrodes of the power supply are located at the tail end of the entire electronic thermometer and are arranged side by side. Therefore, when charging with the charging stand, the contact position of the charging electrode must be adjusted before charging can be realized, which leads to inconvenience in use.

[0004] Therefore, the above technical problems need to be solved. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides an electronic thermometer, which aims to solve the problem in the prior art that the electronic thermometer must be charged at a certain angle, resulting in inconvenience in charging operation.

[0006] In order to solve the above technical problems, the basic technical solution proposed by the utility model is:

[0007] An electronic thermometer comprises a temperature measuring body having a housing cavity formed by a housing, wherein an electronic mainboard and a power storage power supply are arranged in the housing cavity, wherein the electronic mainboard has a charge-discharge circuit, wherein the charge-discharge circuit has a first charge contact structure and a second charge contact structure for charging, wherein the electronic thermometer further comprises:

[0008] a first annular conductive structure, the first annular conductive structure being conductively connected to the first charging contact structure, and the first annular conductive structure being arranged around the outer circumference of the temperature measuring body and exposed so that when the electronic thermometer is placed on the charging base at any position in the circumferential direction, the first annular conductive structure can be electrically contacted with the first conductive contact of the external charging base;

[0009] A second annular conductive structure is conductively connected to the second charging contact structure, and the second annular conductive structure is located in the tail area of ​​the temperature measuring body so that when the electronic thermometer is placed on the charging base at any circumferential position, the second annular conductive structure can be electrically contacted with the second conductive contact of the charging base.

[0010] Furthermore, the shell is a conductive structure, and the shell and the first annular conductive structure are the same structure.

[0011] Furthermore, the first charging contact structure is disposed on the electronic mainboard, and at least one end of the first charging contact structure is in conductive contact with the inner wall surface of the housing.

[0012] Furthermore, the first charging contact structure is arranged along the radial direction of the shell and both ends thereof are in conductive contact with the inner wall surface of the shell.

[0013] Furthermore, the first charging contact structure is a charging positive electrode, and the second charging contact structure is a charging negative electrode.

[0014] Furthermore, the front end of the shell is a pointed portion.

[0015] Furthermore, the tail region includes a middle shell detachably assembled with the outer shell and an end cover provided at the tail end of the middle shell and detachably insulated with the middle shell; the end cover is a conductive structure, and the end cover is in conductive contact with the second charging contact structure; the second annular conductive structure and the end cover are the same structure.

[0016] Furthermore, the second charging contact structure is located in the tail region and arranged axially outward, and when the end cover is assembled and connected with the middle shell, the end cover abuts against the second charging contact structure to achieve electrical conduction.

[0017] Furthermore, the second charging contact structure includes two conductive spring sheets that are arranged opposite to each other and expand outward along the axial direction. When the end cover and the middle shell are assembled, the two conductive spring sheets elastically deform and abut against the end cover.

[0018] Furthermore, the middle shell is an insulating structure made of insulating ceramic material, and the two ends of the middle shell are detachably connected to the joints of the outer shell and the end cover through glue threads.

[0019] The beneficial effects of the utility model are:

[0020] The technical solution of the utility model discloses an electronic thermometer, including an electronic mainboard, on which there is a charge-discharge circuit, and the charge-discharge circuit has a first charging contact structure and a second charging contact structure for charging; the first charging contact structure is electrically connected to a first annular conductive structure, and the first annular conductive structure is arranged around the outer circumference of the temperature measuring body and exposed so that when the electronic thermometer is placed on the charging seat at any position in the circumference, the first annular conductive structure can be electrically contacted with the first conductive contact of the external charging seat; the second charging contact structure is electrically connected to a second annular conductive structure, and the second annular conductive structure is located in the tail area of ​​the temperature measuring body so that when the electronic thermometer is placed on the charging seat at any position in the circumference, the second annular conductive structure can be electrically contacted with the second conductive contact of the charging seat. That is, the first and second annular conductive structures are arranged on the circumference of the shell so that when charging with the charging seat, electrical contact can be achieved at any angle within a range of 360°, which solves the problem that the traditional method requires a specific angle for charging, which makes it inconvenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure and appearance of an electronic thermometer of the utility model;

[0022] Figure 2 This is an internal cross-sectional view of an electronic thermometer of the utility model;

[0023] Figure 3 for Figure 2 A partial enlarged view of part A;

[0024] Figure 4 It is a circuit structure diagram of an electronic thermometer;

[0025] Figure 5 for Figure 2 A partial enlarged view of part B;

[0026] Figure 6 is a transverse cross-sectional view of the annular guide structure;

[0027] Figure 7 Schematic diagram of the second structure of the first annular conductive structure

[0028] Figure 8 Schematic diagram of the structure where the first annular conductive structure is directly arranged on the surface of the housing

[0029] Fig. 9 It is a schematic diagram of a structure in which the first annular conductive structure is flush with the surface of the housing;

[0030] Fig.10 for Figure 2 A partial enlarged view of the C portion;

[0031] Fig.11is a schematic structural diagram of a second charging contact structure;

[0032] Fig.12 Schematic diagram of the third structure of the second annular conductive structure. DETAILED DESCRIPTION

[0033] The following will be combined with the attached Figure 1 To Attachment Fig.12 The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if there are directions involved in the embodiments of the present invention, they shall be based on the directions shown in the drawings, such as front and rear. Figure 1 The specific Figure 1 The left side is the front end, Figure 1 The right side of is the back end; and the definition is as follows Figure 1 The directions shown are: the left-right direction is the axial direction, the circumferential direction around the axial direction, and the radial direction perpendicular to the axial direction. If a certain posture changes, the directional indication will also change accordingly.

[0035] As we all know, electronic thermometers require a power supply to ensure effective use of the thermometer. Existing electronic thermometers are mostly rechargeable, that is, when the power is about to run out or exhausted, they are charged through a charger. Usually, electronic thermometers can be charged through a charging base. Figure 1 As shown, a charging slot 11 is provided in the charging stand 1, and two contacts at the rear end of the charging slot 11 correspond to the charging contacts at the rear end of the electronic thermometer. When the electronic thermometer is placed in, the electronic thermometer needs to be rotated to a suitable position so that the charging contacts at the rear end of the electronic thermometer can be aligned with the positive and negative poles of the corresponding contacts in the charging stand 1 for charging. This makes charging cumbersome.

[0036] The utility model mainly provides a conductive structure arranged circumferentially around the shell of the electronic thermometer as a charging contact, so as to ensure that it can contact the corresponding contact of the charging base when rotating to any position, thus solving the problem that the traditional method needs to be adapted to a suitable angle for charging.

[0037] Specifically, this embodiment provides an electronic thermometer, including a temperature measuring body 10 , wherein the temperature measuring body includes a housing 102 , and the housing 102 forms an accommodating cavity 101 .

[0038] In this embodiment, the shell 102 presents a tubular structure as a whole. For example, it is a round tube or a square tube, an elliptical tube, a polygonal tube, etc., or any other suitable shape. Among them, the shell 102 is configured as a semi-open design. Specifically, the front end of the shell 102 is closed and the rear end is open. Among them, the front end of the shell 102 is set as a tip. When in use, the tip is used to contact the object to be measured. Among them, the shell 102 is made of a metal material with good thermal and electrical conductivity; for example, it is made of stainless steel. In this embodiment, the shell 102 is made of the same material. In other embodiments, the shell 102 can be made of different materials. For example, the tip 102 of the shell 102 is made of metal material, while the other parts are made of non-metallic materials. When such a structural setting is adopted, the tip and the other parts of the shell 102 are designed as two different components, and then assembled into one. That is, the entire shell 102 can adopt a multi-section structure design, and each section of the structure can be composed of different or the same materials. Of course, optimally, the tip should be made of a material with good thermal conductivity.

[0039] Figure 2 As shown, an electronic mainboard 20 is disposed in the accommodating cavity 101, and a temperature measurement control circuit (not shown) is disposed on the electronic mainboard 20. The size and shape of the electronic mainboard 20 are adapted to the accommodating cavity 101, for example, it is in the shape of a long strip. It should be understood that the electronic mainboard 20 (including the temperature measurement control circuit) in this embodiment is implemented by using the existing technology in the field of electronic thermometers, and will not be described in detail here.

[0040] like Figure 2 As shown, the electronic mainboard 20 is electrically connected to a front temperature sensor 202 and a rear temperature sensor 203, wherein the front temperature sensor 202 is located in the tip of the housing 102, and preferably the front temperature sensor 202 is in contact with the inner wall surface of the tip, so that when the tip contacts the object to be measured, heat can be quickly transferred to the front temperature sensor 202 through the tip. The rear temperature sensor 203 is arranged on the electronic mainboard 20 and is located near the rear end of the housing 102, such as in the area between the rear end and a distance of one-half of the total length from the rear end. Figure 3As shown, in a specific implementation, the front temperature sensor 202 extends backward from the tip 1025 into the housing 102 and forms an outwardly recessed recess 2021 in the area near the tip. The recess 2021 is arranged close to the inner wall surface of the housing 102 but does not contact it. In this way, the recess 2021 will not occupy too much space of the accommodating cavity 101. The recess 2021 forms a front storage portion 1011 with the inner wall surface of the housing 102 in the area near the tip, and the front storage portion 1011 stores the power storage power supply 30. The front temperature sensor 202 adopts such a configuration to realize the compact design of the electronic thermometer structure, ensure that the electronic thermometer has a sufficiently small size, and also play a role in saving materials.

[0041] Among them, Figure 3 As shown, the front end of the housing 102 is a tip 1025. In the axial direction, the front end size of the tip 1025 is smaller, and the rear end size is larger. The design of the tip 1025 is conducive to the easy insertion of the tip 1025 into the object to be tested during the test. Specifically, as Figure 3 As shown, along the axial direction from front to back, the tip 1025 has a cone-shaped front tip portion 10251, a straight tube portion 10252 and a flared portion 10253. The front tip portion 10251 is cone-shaped, the tail of the front tip portion 10251 is connected to the straight tube portion 10252, and the flared portion 10253 is connected to the tail end of the straight tube portion 10252 and increases in size toward the back. Correspondingly, the size and shape of the straight tube portion 10252 are consistent with the size and shape of the tail end of the front tip portion 10251 and the flared portion 10253.

[0042] It should be noted that in this embodiment, the power storage source 30 is electrically connected to the electronic mainboard 20 to supply power to the electronic mainboard 20 to realize the power supply of the entire electronic thermometer. Specifically, the power storage source 30 can be a power storage structure such as a super capacitor or a lithium battery, which is not limited in this solution, and any suitable power storage structure can be used.

[0043] Specifically, refer to Figure 2 and Figure 4 The electronic motherboard 20 has a charge and discharge circuit 201, and the charge and discharge circuit 201 has a first charge contact structure 2012 and a second charge contact structure 2013 for charging. Of course, the charge and discharge circuit 201 is electrically connected to the corresponding temperature measurement control circuit. At the charging end, the first charge contact structure 2012 and the second charge contact structure 2013 are used to achieve electrical contact with the external charging seat for charging.

[0044] It is very important that in the present embodiment, the electronic thermometer in the present embodiment further includes a first annular conductive structure 40 and a second annular conductive structure 70, wherein the first annular conductive structure 40 is conductively connected to the first charging contact structure 2012, and the first annular conductive structure 40 is arranged around the periphery of the temperature measuring body 10 and is exposed so that when the electronic thermometer is placed on the charging base at any circumferential position, the first annular conductive structure 40 can be electrically contacted with the first conductive contact of the external charging base; the second annular conductive structure 70 is conductively connected to the second charging contact structure 2013, and the second annular conductive structure 70 is located in the tail area 50 of the temperature measuring body 10 so that when the electronic thermometer is placed on the charging base at any circumferential position, the second annular conductive structure 70 can be electrically contacted with the second conductive contact of the charging base.

[0045] That is, in this solution, when the electronic thermometer is placed in the electronic charging seat, no matter which position the first charging contact structure 2012 and the second charging contact structure 2013 are in, they can achieve electrical contact with the contacts corresponding to the charging seat 1 and thus achieve charging, thus solving the problem that the electronic thermometer can only be charged when placed in a specific position in the charging seat in the conventional technology. Of course, it should be understood that in this embodiment, the so-called arbitrary position refers to a position that is convenient for placement in the circumferential direction for charging and discharging, and in the axial direction, of course, it should be placed in the charging position.

[0046] Detailed, such as Figure 5 and Figure 6 As shown, the first annular conductive structure 40 is arranged along the circumference of the housing 102, and the outer side of the first annular conductive structure 40 is exposed. Figure 6 As shown, in the circumferential direction, no matter at what angle the electronic thermometer is placed in the charging seat, the first annular conductive structure 40 can contact the first charging contact 11 in the charging seat 1. The corresponding first annular conductive structure 40 is in electrical contact with the first charging contact structure 2012, so it is ensured that the first charging contact structure 2012 and the first charging contact 11 are electrically connected at any position in the circumferential direction.

[0047] It should be noted that the first annular conductive structure 40 and the housing 102 may be of different structures. Of course, the first annular conductive structure 40 may also be a part of the housing 102 .

[0048] Specifically, in one embodiment, Figure 2 and Figure 5As shown, the shell 102 is a conductive structure, and the shell 102 and the first annular conductive structure 40 are the same structure. That is, the shell 102 acts as the first annular conductive structure 40. In this way, each part of the shell 102 can be used as a part to achieve conductive contact with the first charging contact 11 of the charging seat to achieve charging. Specifically, in some embodiments, the shell 102 itself is made of conductive material, such as stainless steel, so using the shell 102 as the first annular conductive structure 40 can simplify the structure and facilitate design. When the entire electronic thermometer is placed in the charging seat, the shell 102 contacts the first charging contact 11 of the charging seat, thereby achieving charging.

[0049] In detail, in a specific embodiment, the first charging contact structure 2012 is provided on the electronic mainboard 20, and at least one end of the first charging contact structure 2012 is in conductive contact with the inner wall surface of the shell 102. The first charging contact structure 2012 can be a spring pin, which can ensure better contact with the inner wall surface of the shell 102. Specifically, in a specific embodiment, the first charging contact structure 2012 is provided along the radial direction of the shell 102 and both ends thereof are in conductive contact with the inner wall surface of the shell 102.

[0050] Specifically, in this embodiment, the first charging contact structure 2012 is a charging positive electrode, and the second charging contact structure 2013 is a charging negative electrode.

[0051] In another embodiment, the first annular conductive structure 40 and the housing 102 are different structures.

[0052] Specifically, if Figure 7 As shown, the first annular conductive structure 40 is an annular conductive sheet, which is arranged around the outer side of the housing 102. Correspondingly, a through hole 1021 is provided at the housing 102, and the first charging contact structure 2012 extends outwardly after passing through the through hole 1021 to conductively abut against the conductive sheet. In this way, conductive charging can be achieved when the conductive sheet contacts the first charging contact 11 of the charging seat 1. Of course, the conductive sheet and the housing 102 are insulated.

[0053] Specifically, if Figure 7 As shown, when the housing 102 is a conductor, an insulating layer 60 is provided between the conductive sheet and the housing 102, so as to ensure that the conductive sheet does not contact the housing 102 and thus achieve an insulating setting. Of course, in this embodiment, the first charging contact structure 2012 does not contact when passing through the through hole 1021.

[0054] In another embodiment, if Figure 8As shown, when the portion of the housing 102 where the first annular conductive structure 40 is mounted is insulated, the first annular conductive structure 40 can be disposed in direct contact with the housing 102. In this embodiment, for example, if the housing 102 is a multi-section structure, at least one section is made of insulating material, then the corresponding first annular conductive structure 40 is disposed on the insulating section.

[0055] Of course, in some embodiments, such as Fig. 9 As shown, in order to prevent the first annular conductive structure 40 from protruding upward on the surface of the outer shell 102, in this embodiment, the outer shell 102 has an annular groove 1022, and the first annular conductive structure 40 is arranged in the groove 1022, so that the outer surface of the first annular conductive structure 40 is flush with the outer surface of the outer shell 102.

[0056] Specifically, in this solution, the second annular conductive structure 70 is located in the tail region 50 of the temperature measuring body 10, so that when the electronic thermometer is placed on the charging base at any circumferential position, the second annular conductive structure 70 can be electrically connected to the second conductive contact 12 of the charging base 1. That is, when the electronic thermometer is placed in the charging base 1, no matter at which angle it is placed, the second charging contact structure 2013 can be electrically connected to the second electrical contact 12, which is specifically achieved through the corresponding second annular conductive structure 70.

[0057] Specifically, in a very specific embodiment, for the second charging contact structure 2013, the structural setting can be exactly the same as the first charging contact structure 2012, that is, the corresponding annular conductive sheet is used to realize the electrical connection with the second charging contact structure 2013 and the second electrical contact point 12 respectively to realize charging. It should be understood that in this embodiment, the corresponding annular conductive sheet is exactly the same as the structure of the first charging contact structure 2012 mentioned above, and the only difference is that one is located at the housing 102 and the other is located at the tail area 50. Therefore, it will not be repeated here, but the specific structure of the second charging contact structure 2013 of this embodiment can be clearly understood by referring to the above expression, and it cannot be considered that the disclosure of this embodiment is insufficient.

[0058] In another specific implementation, Fig.10As shown, the tail region 50 includes a middle shell 501 that is detachably assembled and connected to the outer shell 102, and an end cap 502 that is arranged at the tail end of the middle shell 501 and is detachably insulated and connected to the middle shell 501; the end cap 502 is a conductive structure, and the end cap 502 is in conductive contact with the second charging contact structure 2013; the second annular conductive structure 70 and the end cap 502 are the same structure. That is, in this embodiment, the end cap 502 acts as the second annular conductive structure 70, and the two are the same structure. At the same time, in order to avoid a short circuit between the first annular conductive structure 40 and the second annular conductive structure 70, the middle shell 501 and the end cap 502 are designed to be insulated, for example, the middle shell 501 is an insulating structure, for example, made of plastic. In this way, it is only necessary to ensure that the end cap 502 and the second charging contact structure 2013 are conductively connected together. In detail, in a specific embodiment, the middle shell 501 is an insulating structure made of insulating ceramic material, and the two ends of the middle shell 501 are detachably connected to the joints of the outer shell 102 and the end cover 502 through glue threads. That is, the middle shell 501 is an insulating device made of insulating ceramic material, and the insulation between the end cover 502 can be achieved through the middle shell 501. Further, the insulation setting between the end cover 502 and the outer shell 102 can be solved. Among them, the insulating ceramic material is, for example, a general term for ceramic materials with a melting point of silicon oxide above 1500°C, such as carbide ceramics, boride ceramics, nitride ceramics and silicide ceramics, zirconium oxide ceramics, etc. In addition, the middle shell 501 is threadedly connected to the end cover 502 and the outer shell 102 to achieve the function of detachable assembly. Among them, there is a glue layer at the threaded joint surface between the middle shell 501 and the outer shell 102 and the threaded joint surface between the middle shell 501 and the end cover 502. That is, during assembly, glue is applied to the joint surface, so that a sealing design can be achieved and sufficient temperature resistance can be ensured during use. It should be understood that the glue belongs to the prior art and will not be described in detail. In this embodiment, the glue is preferably a high temperature resistant glue above 200°C, such as the red Rtv silicon gasket glue of the American brand Permatex.

[0059] In detail, in some embodiments, the second charging contact structure 2013 is located in the tail region 50 and arranged axially outward, and when the end cover 502 is assembled and connected with the middle shell 501, the end cover 502 abuts against the second charging contact structure 2013 to achieve electrical conduction. Specifically, the second charging contact structure 2013 is provided at the tail end of the electronic mainboard 20. In this solution, after the electronic mainboard 20 is placed in the accommodating space 101, the middle shell 501 is assembled and connected with the outer shell 102, and then the end cover 502 is assembled with the middle shell 501. When assembled to the set position, the end cover 502 abuts against the second charging contact structure 2013, thereby achieving a conductive connection between the end cover 502 and the second charging contact structure 2013.

[0060] like Fig.11 As shown, the second charging contact structure 2013 includes two conductive springs 20131 that are arranged opposite to each other and flared outward along the axial direction. When the end cover 502 is assembled with the middle shell 501, the two conductive springs 20131 are elastically deformed and abutted against the end cover 502. That is, during assembly, the end cover 502 is in contact with the corresponding two conductive springs 20131. When the end cover 502 is further screwed into the middle shell 501, the two conductive springs 20131 are squeezed to elastically deform, thereby making the two conductive springs 20131 and the end cover 502 in stable contact.

[0061] In other embodiments, Fig.12 As shown, the second annular conductive structure 70 includes a contact through hole 5021 and a contact sheet 701 provided at the circumferential center of the end cover 502, and the contact sheet 701 is provided at the outer end side of the through hole 5021. The contact through hole 5021 contacts the contact sheet 701. In this embodiment, the contact sheet 701 is located at the rotation center of the entire electronic thermometer, so that in the circumferential direction, no matter how it is adjusted, the contact sheet 701 is always opposite to the second contact point 12, thereby ensuring that the contact sheet 701 is always in contact with the second contact point 12. That is, as long as the electronic thermometer is placed in the charging slot of the charging seat 1, the corresponding second charging contact structure 2013 can be opposite to the second contact point 12. This method can also achieve that the second annular conductive structure 70 is always opposite to the second contact point 12 in the circumferential direction.

[0062] In summary, the technical solution of the utility model changes the traditional way of charging by setting two contacts at the tail end, and realizes charging by placing the battery in the charging seat at any angle in the circumferential direction through the ring-type conductive structure, making charging more convenient.

[0063] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An electronic thermometer, comprising a temperature measuring body (10) having a housing cavity (101) formed by a housing (102), wherein the housing cavity (101) has an electronic mainboard (20) and a power storage power source (30), wherein the electronic mainboard (20) has a charging and discharging circuit (201), wherein the charging and discharging circuit (201) has a first charging contact structure (2012) and a second charging contact structure (2013) for charging, wherein: The electronic thermometer also includes: a first annular conductive structure (40), the first annular conductive structure (40) being conductively connected to the first charging contact structure (2012), and the first annular conductive structure (40) being arranged around the outer circumference of the temperature measuring body (10) and exposed so that when the electronic thermometer is placed on the charging base at any position in the circumferential direction, the first annular conductive structure (40) can be electrically contacted with a first conductive contact point of the external charging base; A second annular conductive structure (70) is conductively connected to the second charging contact structure (2013), and the second annular conductive structure (70) is located in the tail region (50) of the temperature measuring body (10), so that when the electronic thermometer is placed on the charging base at any circumferential position, the second annular conductive structure (70) can be electrically contacted with the second conductive contact of the charging base.

2. An electronic thermometer as claimed in claim 1, characterized in that: The shell (102) is a conductive structure, and the shell (102) and the first annular conductive structure (40) are the same structure.

3. An electronic thermometer as claimed in claim 1, characterized in that: The first charging contact structure (2012) is arranged on the electronic mainboard (20), and at least one end of the first charging contact structure (2012) is in conductive contact with the inner wall surface of the housing (102).

4. An electronic thermometer as claimed in claim 3, characterized in that: The first charging contact structure (2012) is arranged radially along the outer shell (102) and both ends thereof are in conductive contact with the inner wall surface of the outer shell (102).

5. An electronic thermometer as claimed in claim 1, characterized in that: The first charging contact structure (2012) is a positive charging electrode, and the second charging contact structure (2013) is a negative charging electrode.

6. An electronic thermometer as claimed in claim 1, characterized in that: The front end of the housing (102) is a pointed portion.

7. An electronic thermometer according to any one of claims 1 to 6, characterized in that: The tail region (50) comprises a middle shell (501) detachably assembled with the outer shell (102) and an end cover (502) provided at the tail end of the middle shell (501) and detachably insulated with the middle shell (501); the end cover (502) is a conductive structure, and the end cover (502) is in conductive contact with the second charging contact structure (2013); the second annular conductive structure (70) and the end cover (502) are the same structure.

8. An electronic thermometer as claimed in claim 7, characterized in that: The second charging contact structure (2013) is located in the tail region (50) and is arranged axially outward, and when the end cover (502) and the middle shell (501) are assembled and connected, the end cover (502) and the second charging contact structure (2013) abut against each other to achieve electrical conduction.

9. An electronic thermometer as claimed in claim 8, characterized in that: The second charging contact structure (2013) comprises two conductive spring sheets (20131) which are arranged opposite to each other and flared outward along the axial direction. When the end cover (502) and the middle shell (501) are assembled, the two conductive spring sheets (20131) elastically deform and abut against the end cover (502).

10. An electronic thermometer as claimed in claim 7, characterized in that: The middle shell (501) is an insulating structure made of insulating ceramic material, and the two ends of the middle shell (501) are detachably connected to the outer shell (102) and the end cover (502) at their junctions through glue threads.

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