Thermometer and multi-layer waterproof structure thereof

Abstract

The utility model discloses a thermometer and a multi-layer waterproof structure thereof, the multi-layer waterproof structure comprises an outer chamber body, an inner chamber body and a cover body, the outer chamber body is provided with a first cavity, the inner chamber body is arranged in the first cavity, the cover body is detachably arranged above the outer chamber body and is used for covering the first cavity and the inner chamber body, and the inner chamber body is arranged in the first cavity. The storage bin further comprises a first sealing ring, the first sealing ring is sequentially provided with a first sealing part and a second sealing part from outside to inside, the first sealing part is arranged between the inner wall of the cover body and the edge of the upper opening of the outer bin body, and the second sealing part is arranged between the inner wall of the cover body and the upper edge of the inner bin body. The first sealing part is extruded by the inner wall of the cover body and the edge of the upper opening of the outer bin body, elastically deforms and fills the gap between the cover body and the outer bin body to form a barrier for preventing water from directly entering the first cavity from the outside.

Description

Technical Field

[0001] The utility model relates to the technical field of thermometers, in particular to a thermometer and a multi-layer waterproof structure thereof. Background Art

[0002] As a facility specially used for swimming activities, swimming pools are not only important places for people's daily leisure exercise and parent-child entertainment, but also the core venues for professional athletes' competitive training and various water events. Swimming pools are usually set up on the ground. According to the different water temperature control, they can be divided into two categories: conventional swimming pools and heated swimming pools. According to the specific specifications, purpose of use and seasonal needs, the water temperature of each type of swimming pool must be accurately controlled within a specific suitable range to ensure the comfort, safety and activity effect of swimmers. For this reason, swimming pool thermometers have become an indispensable tool for real-time and accurate monitoring and control of swimming pool water temperature.

[0003] A Chinese patent with authorization announcement number CN219084239U discloses a full-view swimming pool thermometer, including a base shell, a battery compartment, a substrate, a circuit board, a microprocessor, a temperature sensing module, a display screen, a sealed cover and a transparent ball cover; the sealed cover is provided with an opening for accommodating the transparent ball cover, the transparent ball cover is inverted on the opening edge of the sealed cover, the sealed cover is arranged at the upper end of the base shell, the sealed cover is threadedly connected to the external thread of the base shell through an internal thread, and a rubber ring can be arranged between the sealed cover and the base shell to enhance the airtightness and prevent liquid penetration.

[0004] Although the full-view swimming pool thermometer disclosed in the above patent has adopted an O-ring to seal the joint gap between the sealing cover and the base shell, in actual application, especially in a complex swimming pool environment with continuous high humidity or repeated alternation of hot and cold, water vapor may still gradually penetrate through tiny gaps, posing a potential threat to sensitive electronic components over time, which may cause malfunction or even damage. Utility Model Content

[0005] Therefore, it is necessary to provide a thermometer and a multi-layer waterproof structure thereof to solve the problem of poor waterproof ability of thermometers in the prior art.

[0006] To achieve the above-mentioned purpose, the present embodiment provides a multi-level waterproof structure, including an outer warehouse body, an inner warehouse body and a cover body, the outer warehouse body is provided with a first cavity, the inner warehouse body is arranged in the first cavity, the cover body is detachably arranged above the outer warehouse body, and is used to cover the first cavity and the inner warehouse body, and also includes a first sealing ring, the first sealing ring is provided with a first sealing part and a second sealing part from the outside to the inside, the first sealing part is arranged between the inner wall of the cover body and the upper open edge of the outer warehouse body, and is used to seal the gap between the cover body and the upper open edge of the outer warehouse body, and the second sealing part is arranged between the inner wall of the cover body and the upper edge of the inner warehouse body, and is used to seal the gap between the cover body and the inner warehouse body.

[0007] Furthermore, the upper part of the inner warehouse body is provided with a first annular protrusion and a second annular protrusion in sequence from the outside to the inside, and the first sealing portion is also provided on the first annular protrusion, and is also used to seal the gap between the cover body and the first annular protrusion, and the upper edge of the second annular protrusion is the upper edge of the inner warehouse body.

[0008] Furthermore, a groove is formed between the first annular protrusion and the second annular protrusion, and the first sealing ring is provided with a U-shaped structure, and the U-shaped structure is arranged in the groove and closely adheres to the inner wall of the groove.

[0009] Furthermore, it also includes a bolt, the bottom of the groove and the U-shaped structure are both provided with through holes, the inner wall of the cover body is provided with a screw hole, and the bolt passes through the groove and the through holes of the U-shaped structure and is threadedly connected with the screw hole.

[0010] Furthermore, it includes a battery, an end cover and a second sealing ring, the inner compartment body is provided with a second cavity for accommodating the battery, the portion of the end cover that contacts the lower opening of the second cavity is provided with the second sealing ring, the end cover is detachably provided on the lower opening of the second cavity, and the second sealing ring is used to seal the gap between the end cover and the second cavity.

[0011] Furthermore, it also includes a power board and a main board, the power board is arranged on the edge of the upper opening of the second cavity, the size of the power board is larger than the size of the upper opening of the second cavity so as to cover the upper opening of the second cavity, the power board is respectively connected to the battery and the main board, and the main board is located above the power board.

[0012] Furthermore, it also includes a temperature sensing probe, which is arranged in the first cavity and extends out through the lower opening of the first cavity, and the temperature sensing probe located in the first cavity is sealed with glue.

[0013] Furthermore, it also includes a main board, which is located above the inner storage body. The inner storage body is provided with a slot for the wire of the temperature sensing probe to pass through. The wire of the temperature sensing probe passes through the slot and is connected to the main board. The wire of the temperature sensing probe located in the slot is sealed with glue.

[0014] Furthermore, the cover body is provided with a third cavity for accommodating the display screen, and the lower opening of the third cavity faces the inner compartment body.

[0015] To achieve the above purpose, this embodiment also provides a thermometer, including the multi-layer waterproof structure as described in any one of the above embodiments.

[0016] Different from the prior art, the above technical solution has the following beneficial effects:

[0017] When the cover is installed on the outer compartment, the first sealing part is squeezed by the inner wall of the cover and the upper open edge of the outer compartment, elastically deformed, and fills the gap between the two, forming a barrier to prevent moisture from directly entering the first cavity from the outside. At the same time, the second sealing part is pressed between the inner wall of the cover and the upper edge of the inner compartment, and is also tightly fitted due to the squeeze deformation, blocking the possibility of moisture penetrating into the inner compartment from the gap between the first cavity and the cover. In this way, the entire waterproof structure forms a complete sealing system that can resist the intrusion of external liquids. Even under extreme humidity conditions, it can effectively isolate moisture and protect the circuit structure stored in the cover, the outer compartment, and the inner compartment from moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the cross-sectional structure of the multi-layer waterproof structure in this embodiment;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0020] Figure 3 This is an exploded schematic diagram of the multi-layer waterproof structure in this embodiment;

[0021] Figure 4 is a schematic diagram of the cross-sectional structure of the first sealing ring in this embodiment;

[0022] Figure 5 Schematic diagram of the cross-sectional structure of the inner bin body in this embodiment;

[0023] Figure 6 is a three-dimensional diagram of the end cover in this embodiment;

[0024] Figure 7 is a three-dimensional diagram of the inner bin body in this embodiment;

[0025] Figure 8This is a schematic diagram of the cross-sectional structure of the outer chamber body in this embodiment;

[0026] Fig. 9 This is a three-dimensional diagram of the outer warehouse body in this embodiment;

[0027] Fig.10 It is a three-dimensional diagram of the thermometer in this embodiment.

[0028] Description of reference numerals:

[0029] 1. Mask body;

[0030] 2. External warehouse;

[0031] 21. first cavity; 22. upper opening; 23. lower opening;

[0032] 3. Inner warehouse body;

[0033] 31. second cavity; 32. first annular protrusion; 33. second annular protrusion; 34. groove;

[0034] 35. Open top; 36. Open bottom; 37. End cover; 38. Slotted;

[0035] 4. Temperature sensor;

[0036] 5. Motherboard;

[0037] 51. Bolts;

[0038] 6. Power board;

[0039] 7. Battery;

[0040] 8. The first sealing ring;

[0041] 81. first sealing part; 82. second sealing part; 83. U-shaped structure; 84. bolt;

[0042] 9. Second sealing ring;

[0043] 10. Display screen;

[0044] 110. Thermometer. DETAILED DESCRIPTION

[0045] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0047] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0048] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0049] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0050] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0051] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0052] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0053] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] See also Figures 1 to 9 The present embodiment provides a multi-layer waterproof structure, including an outer warehouse body 2, an inner warehouse body 3 and a cover body 1. The outer warehouse body 2 is provided with a first cavity 21, the inner warehouse body 3 is provided in the first cavity 21, and the cover body 1 is detachably provided above the outer warehouse body 2, and is used to cover the first cavity 21 and the inner warehouse body 3. The multi-layer waterproof structure also includes a first sealing ring 8, and the first sealing ring 8 is provided with a first sealing portion 81 and a second sealing portion 82 in sequence from the outside to the inside. The first sealing portion 81 is provided between the inner wall of the cover body 1 and the edge of the upper opening 22 of the outer warehouse body 2, and is used to seal the gap between the cover body 1 and the edge of the upper opening 22 of the outer warehouse body 2. The second sealing portion 82 is provided between the inner wall of the cover body 1 and the upper edge of the inner warehouse body 3, and is used to seal the gap between the cover body 1 and the inner warehouse body 3.

[0055] The cover body 1 is located at the top, the outer compartment body 2 and the inner compartment body 3 are located at the bottom, and the outer compartment body 2 is located on the outside of the inner compartment body 3. A relatively closed accommodation space is formed between the cover body 1, the outer compartment body 2 and the inner compartment body 3, which can accommodate circuit structures. The circuit structure usually contains precise electronic components and complex wiring, which are very sensitive to water. Moisture may corrode the metal pins of the components, causing the pins to rust or poor contact; at the same time, moisture may also penetrate into the circuit board (such as the main board 5, the power board 6), causing the insulation performance to deteriorate, thereby affecting the normal operation of the circuit.

[0056] When the cover body 1 is installed on the outer compartment body 2, the first sealing portion 81 is squeezed by the inner wall of the cover body 1 and the edge of the upper opening 22 of the outer compartment body 2, and undergoes elastic deformation to fill the gap between the two, forming a barrier to prevent moisture from directly entering the first cavity 21 from the outside. At the same time, the second sealing portion 82 is pressed between the inner wall of the cover body 1 and the upper edge of the inner compartment body 3, and is also tightly fitted due to the squeeze deformation, blocking the possibility of moisture penetrating into the inner compartment body 3 from the gap between the first cavity 21 and the cover body 1. In this way, the entire waterproof structure forms a complete sealing system that can resist the intrusion of external liquids. Even under extreme humidity conditions, it can effectively isolate moisture and protect the circuit structure stored in the cover body 1, the outer compartment body 2 and the inner compartment body 3 from moisture.

[0057] See also Figure 3 In this embodiment, the sealing ring is an O-shaped sealing ring, which is annular in shape and circular in cross section. The sealing portion is a portion of an annular structure on the O-shaped sealing ring, and the first sealing portion 81 is located outside the second sealing portion 82.

[0058] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the inner warehouse body 3 is provided with a first annular protrusion 32 and a second annular protrusion 33 from the outside to the inside, and the first sealing portion 81 is also provided on the first annular protrusion 32, and is also used to seal the gap between the cover body 1 and the first annular protrusion 32. The upper edge of the second annular protrusion 33 is the upper edge of the inner warehouse body 3.

[0059] The first annular protrusion 32 surrounds the outer wall of the inner warehouse body 3. Its material can be the same as the main material of the inner warehouse body 3, and has a certain height and width. Its design purpose is to provide an additional contact surface to contact the first sealing portion 81, thereby enhancing the sealing strength between the inner warehouse body 3 and the cover body 1. The second annular protrusion 33 also surrounds the outer wall of the inner warehouse body 3. Its upper edge is the upper edge of the inner warehouse body 3, and contacts the second sealing portion 82. The design of the second annular protrusion 33 is intended to provide a stable support platform for the second sealing portion 82, thereby ensuring the sealing effect between the second sealing portion 82 and the cover body 1. The upper edge of the first annular protrusion 32 can be flush with the upper edge of the second annular protrusion 33, or there can be a height difference between the two. Preferably, the upper edge of the first annular protrusion 32 is flush with the upper edge of the second annular protrusion 33.

[0060] When the cover body 1 is installed on the outer warehouse body 2, the first sealing portion 81 not only contacts the edge of the upper opening 22 of the outer warehouse body 2, but also fits tightly with the first annular protrusion 32, which increases the contact area between the cover body 1 and the inner warehouse body 3, enhances the sealing strength, and reduces the possibility of moisture penetrating from the gap between the cover body 1 and the inner warehouse body 3.

[0061] See also Figure 2 , Figure 4 and Figure 5 In this embodiment, a groove 34 is formed between the first annular protrusion 32 and the second annular protrusion 33 , and the first sealing ring 8 is provided with a U-shaped structure 83 . The U-shaped structure 83 is arranged in the groove 34 and is close to the inner wall of the groove 34 .

[0062] There may be one or more grooves 34, but one groove 34 corresponds to one U-shaped structure 83. The U-shaped structure 83 may be formed by bending the sealing ring between the first sealing portion 81 and the second sealing portion 82, and the bottom of the U-shaped structure 83 is lower than the bottom of other parts of the sealing ring.

[0063] The presence of the groove 34 forces moisture to follow a more tortuous path when trying to penetrate the waterproof structure. This design increases the difficulty for moisture to enter the structure because moisture needs to bypass or pass through the groove 34 to reach the circuit structure inside. Such a structure can ensure that the waterproof structure can still maintain good waterproof performance in harsh environments, and improve the environmental adaptability and reliability of the waterproof structure.

[0064] See also Figure 1 and Figure 2 In this embodiment, the multi-level waterproof structure further includes a bolt 84. The bottom of the groove 34 and the U-shaped structure 83 are both provided with through holes. The inner wall of the cover body 1 is provided with a screw hole. The bolt 84 passes through the through holes of the groove 34 and the U-shaped structure 83 and is threadedly connected with the screw hole. During installation, the bolt 84 is inserted from the through hole at the bottom of the groove 34, passes through the through hole of the U-shaped structure 83 in sequence, and finally docks with the screw hole on the inner wall of the cover body 1. By rotating the bolt 84, it forms a threaded connection with the screw hole and is gradually tightened, so that the inner bin body 3, the first sealing ring 8 and the inner wall of the cover body 1 are firmly fixed together.

[0065] In the above embodiment, the sealing ring is fixed between the inner chamber body 3 and the cover body 1, and the structure is as follows: Figure 2 As shown, in some embodiments, the first sealing ring 8 can be pre-fixed on one of the inner bin body 3, the outer bin body 2 or the cover body, and then during installation, the inner bin body 3, the outer bin body 2, and the cover body 1 are aligned so that the first sealing ring 8 can seal the three.

[0066] See also Figure 1 , Figure 3 , Figure 5 and Figure 6 In this embodiment, the multi-layer waterproof structure also includes a battery 7, an end cover 37 and a second sealing ring 9. The inner compartment body 3 is provided with a second cavity 31 for accommodating the battery 7. A second sealing ring 9 is provided at a portion of the end cover 37 that contacts the lower opening 36 of the second cavity 31. The end cover 37 is detachably provided on the lower opening 36 of the second cavity 31. The second sealing ring 9 is used to seal the gap between the end cover 37 and the second cavity 31.

[0067] The battery 7 can be loaded into the second cavity 31 from the opening of the second cavity 31. When the end cover 37 covers the lower opening 36 of the second cavity 31, the second sealing ring 9 on the end cover 37 is compressed, and its material undergoes elastic deformation, tightly fitting on the contact surface between the end cover 37 and the second cavity 31, forming a waterproof barrier to prevent moisture from entering the battery 7 cavity from the bottom, significantly improving the waterproof performance, and preventing moisture from directly contacting the battery 7, thereby avoiding the risks of battery 7 short circuit, corrosion, performance degradation, etc.

[0068] See also Figure 5 and Figure 6 In this embodiment, the end cover 37 and the lower opening 36 can be assembled by threaded connection, snap connection, or sleeve connection. Preferably, the end cover 37 and the lower opening body are connected by threads, and the inner wall of the lower opening 36 of the inner cabin body is provided with internal threads. Figure 5 As shown, the outer wall of the end cover 37 is provided with an external thread, and the structure is as follows Figure 6 shown.

[0069] See also Figure 1 , Figure 3 , Figure 5 and Figure 7 In this embodiment, the multi-level waterproof structure also includes a power board 6 and a main board 5. The power board 6 is arranged on the edge of the upper opening 35 of the second cavity 31. The size of the power board 6 is larger than the size of the upper opening 35 of the second cavity 31 to cover (seal) the upper opening 35 of the second cavity 31. The power board 6 is connected to the battery 7 and the main board 5 respectively, and the main board 5 is located above the power board 6.

[0070] The power board 6 is installed on the edge of the upper opening 35 of the second cavity 31, and its size (length, width) is larger than the size (length, width) of the upper opening 35 of the second cavity 31, so that the edge of the power board 6 can cover and block the upper opening 35, forming a physical barrier to prevent moisture from directly entering the second cavity 31. Preferably, a through hole for the bolt to pass through is opened in advance on the power board 6, and then the power board 6 is fixed to the inner chamber body 3 by bolts to maintain stability. In some embodiments, the power board 6 can be fixed to the inner chamber body 3 by a clamping structure, bonding, etc.

[0071] The upper part of the second cavity 31 is sealed by the power board 6, and the lower part of the second cavity 31 is sealed by the end cover 37 and the second sealing ring 9, which provides special and effective waterproof protection for the battery 7 inside the inner compartment 3, improves the safety and environmental adaptability of the equipment, and is of great significance for ensuring the normal operation of the equipment in various complex environments.

[0072] See also Figure 1 , Figure 3 and Figure 8 In this embodiment, the multi-layer waterproof structure also includes a temperature sensing probe 4, which is arranged in the first cavity 21 and extends out through the lower opening 23 of the first cavity 21. The temperature sensing probe 4 in the first cavity 21 is sealed with glue, that is, the temperature sensing probe 4 is partially exposed outside the first cavity 21.

[0073] The temperature sensing probe 4 is arranged inside the pool, and its probe part (i.e., the temperature sensor element) is partially exposed to the water body and in direct contact with the water, so it has a faster response speed to the change of water temperature and can sense the actual temperature of the water body more accurately. The glue sealing method ensures the waterproof seal between the temperature sensing probe 4 and the first cavity 21, preventing moisture from entering the first cavity 21 through the probe installation part, further improving the waterproof performance of the entire multi-level waterproof structure, and is particularly suitable for equipment that needs to be used in a humid or underwater environment.

[0074] Glue sealing uses a fluid and plastic sealant to fill the gaps in the sealed area. When applied, the sealant can flow into and fill tiny spaces such as joints, gaps, and holes to form a continuous and uniform sealing layer. The applied sealant undergoes a chemical reaction or physical change under appropriate conditions (such as room temperature curing, heat curing, light curing, etc., depending on the type of sealant selected), transforming from a liquid or paste to a solid state to form a tough, elastic sealing layer. This curing process allows the sealant to fit tightly to the contact surface, forming a physical barrier that effectively blocks the penetration path of the medium (such as moisture).

[0075] See also Figure 1 , Figure 3 and Figure 5 In this embodiment, the multi-layer waterproof structure also includes a main board 5, which is located above the inner compartment body 3. The inner compartment body 3 is provided with a slot 38 for the wire of the temperature sensing probe 4 to pass through. The wire of the temperature sensing probe 4 passes through the slot 38 and is connected to the main board 5. The wire of the temperature sensing probe 4 located in the slot 38 is sealed with glue.

[0076] Since the main board 5 and the temperature probe 4 are located on the upper and lower sides of the inner compartment body 3, a slot 38 is provided on the inner compartment body 3 to facilitate the electrical connection between the two, avoid complicated winding or external connection methods, and simplify the internal wiring of the device. After the slot 38 is provided, in order to prevent the flow of moisture, the slot 38 position needs to be sealed. The glue coating and sealing process ensures the waterproof performance of the temperature probe 4 wire passing through the slot 38 of the inner compartment body 3. The sealing layer formed after the sealant is cured can effectively prevent moisture from entering the first cavity 21 along the gap between the wire and the slot 38, and keep the internal circuit structure dry.

[0077] In this embodiment, the battery 7 provides power for the device, which is converted into a stable voltage suitable for the mainboard 5 and other components (such as the temperature probe 4 and the display screen 10) through the power board 6. The mainboard 5 serves as a hardware platform, integrating various hardware units, running the operating system and application programs, and realizing the functions of the device. The temperature probe 4 monitors the external temperature and sends the temperature signal to the mainboard 5. The mainboard 5 receives and processes the data of the temperature probe 4, and performs corresponding monitoring, display, protection and performance adjustment measures according to the temperature conditions.

[0078] See also Figure 1 In this embodiment, the cover body 1 is provided with a third cavity for accommodating the display screen 10, and the lower opening of the third cavity faces the inner compartment body 3 and will be covered by the inner compartment body 3. The display screen 10 is connected to the mainboard 5, and the mainboard 5 can display the temperature through the display screen 10. At this time, the cover body 1 is light-transmissive (transparent), so that the user can see the content displayed on the internal display screen 10 from the outside.

[0079] See also Figure 1 and Figure 2 In this embodiment, the mainboard 5 is detachably arranged on the inner side of the cover body 1. A through hole for the bolt 51 to pass through can be pre-opened on the mainboard 5, and then the mainboard 5 is fixed to the cover body 1 by the bolt 51 to maintain stability. In some embodiments, the mainboard 5 can also be fixed to the upper part of the inner compartment body 3. The detachable mainboard 5 makes the device have a higher degree of modularity, which is convenient for replacing the mainboard 5 with different performance according to needs, or quickly replacing the mainboard 5 when it fails without affecting the normal use of other parts. In some other embodiments, the mainboard 5 can be fixed by a snap-on structure, bonding, etc.

[0080] See also Figure 1 In this embodiment, the cover body 1 and the outer chamber body 2 can be assembled by threaded connection, snap connection, or sleeve connection. Figure 1 Preferably, the cover body 1 and the outer warehouse body 2 are connected by threads, the inner wall of the cover body 1 is provided with internal threads, and the outer side wall of the upper opening 22 of the outer warehouse body 2 is provided with external threads.

[0081] See also Fig.10 This embodiment also provides a thermometer, which includes the multi-layer waterproof structure as described in any of the above embodiments.

[0082] Thermometer 110 is particularly suitable for wet or underwater environments such as swimming pools, and also has the potential for application in various other environments. The multi-layer waterproof structure has multiple waterproof barriers, which effectively prevent water vapor from entering the thermometer from all directions, ensuring that it maintains long-term waterproof performance in high humidity and repeated hot and cold swimming pool environments, avoiding damage to electronic components due to moisture, and greatly improving the durability and working reliability of the device.

[0083] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A multi-layer waterproof structure, comprising an outer compartment, an inner compartment and a cover, wherein the outer compartment is provided with a first cavity, the inner compartment is provided in the first cavity, and the cover is detachably provided above the outer compartment to cover the first cavity and the inner compartment, characterized in that: It also includes a first sealing ring, which is provided with a first sealing part and a second sealing part in sequence from the outside to the inside. The first sealing part is arranged between the inner wall of the cover body and the upper open edge of the outer warehouse body, and is used to seal the gap between the cover body and the upper open edge of the outer warehouse body. The second sealing part is arranged between the inner wall of the cover body and the upper edge of the inner warehouse body, and is used to seal the gap between the cover body and the inner warehouse body.

2. The multi-layer waterproof structure according to claim 1, characterized in that: The upper part of the inner warehouse body is provided with a first annular protrusion and a second annular protrusion in sequence from the outside to the inside. The first sealing portion is also provided on the first annular protrusion and is also used to seal the gap between the cover body and the first annular protrusion. The upper edge of the second annular protrusion is the upper edge of the inner warehouse body.

3. The multi-layer waterproof structure according to claim 2, characterized in that: A groove is formed between the first annular protrusion and the second annular protrusion. The first sealing ring is provided with a U-shaped structure. The U-shaped structure is arranged in the groove and is tightly attached to the inner wall of the groove.

4. The multi-layer waterproof structure according to claim 3, characterized in that: It also includes a bolt, the bottom of the groove and the U-shaped structure are both provided with through holes, the inner wall of the cover body is provided with a screw hole, and the bolt passes through the groove and the through holes of the U-shaped structure and is threadedly connected with the screw hole.

5. The multi-layer waterproof structure according to claim 1, characterized in that: It also includes a battery, an end cover and a second sealing ring. The inner compartment body is provided with a second cavity for accommodating the battery. The second sealing ring is provided at a portion of the end cover that contacts the lower opening of the second cavity. The end cover is detachably provided on the lower opening of the second cavity. The second sealing ring is used to seal the gap between the end cover and the second cavity.

6. The multi-layer waterproof structure according to claim 5, characterized in that: It also includes a power board and a main board. The power board is arranged on the edge of the upper opening of the second cavity. The size of the power board is larger than the size of the upper opening of the second cavity so as to cover the upper opening of the second cavity. The power board is respectively connected to the battery and the main board, and the main board is located above the power board.

7. The multi-layer waterproof structure according to claim 1, characterized in that: It also includes a temperature sensing probe, which is arranged in the first cavity and extends out through the lower opening of the first cavity. The temperature sensing probe located in the first cavity is sealed with glue.

8. The multi-layer waterproof structure according to claim 7, characterized in that: It also includes a main board, which is located above the inner storage body. The inner storage body is provided with a slot for the wire of the temperature sensing probe to pass through. The wire of the temperature sensing probe passes through the slot and is connected to the main board. The wire of the temperature sensing probe located in the slot is sealed with glue.

9. The multi-layer waterproof structure according to claim 8, characterized in that: The cover body is provided with a third cavity for accommodating the display screen, and the lower opening of the third cavity faces the inner storage body.

10. A thermometer, characterized in that: It comprises a multi-layer waterproof structure as described in any one of claims 1 to 9.

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