Smart watch

Abstract

The utility model discloses a kind of smart watches, it is related to intelligent wearable device technical field, wherein, smart watch includes watch case and waterproof breathable assembly;Wherein, accommodation cavity is formed in watch case, accommodation cavity is used to accommodate internal components of smart watch, the shell wall of watch case is equipped with the pressure relief hole that passes through shell wall, installation port is equipped on watch case, and dial is blocked and arranged with installation port;Waterproof breathable assembly includes that adhesion layer, waterproof breathable layer and structure layer are sequentially stacked in the direction of the inside of watch case along the outside of watch case and are directed to the inside of watch case, adhesion layer is adhered to the inner surface of watch case, adhesion layer and structure layer are all annular closed structure that is surrounded in hole outer periphery, and adhesion layer and structure layer are all coaxially arranged with pressure relief hole, waterproof breathable layer is circular and set up opposite pressure relief hole, waterproof breathable layer blocks pressure relief hole.The utility model provides the smart watch of can make its inside waterproof glue not easy to age due to air pressure fluctuation, avoids the decline of waterproof performance of smart watch.

Description

Technical Field

[0001] This utility model relates to the field of smart wearable device technology, and in particular to a smartwatch. Background Technology

[0002] Smartwatches have become mainstream electronic products, and their waterproof ratings are increasingly demanding, generally requiring IP68 water resistance. However, traditional fully enclosed smartwatches experience resonance within the case when the speaker is activated, causing pressure fluctuations. Prolonged pressure fluctuations can lead to aging of the waterproof gaskets, resulting in a decrease in the smartwatch's waterproof performance. Utility Model Content

[0003] The main purpose of this invention is to propose a smartwatch that addresses the technical problem that the waterproof gaskets of smartwatches are prone to aging due to air pressure fluctuations, leading to a decrease in the waterproof performance of the smartwatch.

[0004] To achieve the above objectives, the present invention proposes a smartwatch, which includes:

[0005] The watch case and the watch face, wherein the watch case forms a receiving cavity for accommodating the internal components of the smartwatch, the watch case wall has a pressure relief hole penetrating the wall, the watch case has a mounting port, and the watch face seals the mounting port;

[0006] A waterproof and breathable component includes an adhesive layer, a waterproof and breathable layer, and a structural layer stacked sequentially along the outer side of the watch case towards the inner side of the watch case. The adhesive layer is bonded to the inner surface of the watch case. Both the adhesive layer and the structural layer are annular closed structures surrounding the periphery of the hole, and both the adhesive layer and the structural layer are coaxially arranged with the pressure relief hole. The waterproof and breathable layer is circular and positioned directly opposite the pressure relief hole, thus sealing the pressure relief hole.

[0007] In one embodiment, the pressure relief hole formed on the inner surface of the watch case has a circular opening. The waterproof and breathable layer includes a connecting part and a sealing part. The connecting part is annular and surrounds the outer periphery of the sealing part. The connecting part is sandwiched between the adhesive layer and the structural layer. The sealing part matches the shape of the pressure relief hole formed on the inner surface of the watch case, and the sealing part is used to seal the pressure relief hole.

[0008] In one embodiment, the adhesive layer forms a first adhesive surface and a second adhesive surface on opposite sides along the direction from the outer side of the watch case to the inner side of the watch case, the first adhesive surface is bonded to the inner surface of the watch case, the second adhesive surface is bonded to the side of the connecting portion facing the adhesive layer, and the structural layer is pressed onto the side of the connecting portion away from the second adhesive surface.

[0009] In one embodiment, the structural layer is a polyethylene terephthalate structural layer;

[0010] And / or, the adhesive layer is a foam tape adhesive layer, and the thickness of the adhesive layer is A, wherein 0.15mm≤A≤0.25mm.

[0011] In one embodiment, the diameter of the pressure relief hole gradually expands from the outer side of the shell wall toward the inner side of the shell wall.

[0012] In one embodiment, the case includes a bottom wall and a side wall. The bottom wall is disposed opposite to the mounting opening. The side wall surrounds the outer periphery of the bottom wall and forms the receiving cavity with the bottom wall. There are multiple pressure relief holes, and each pressure relief hole is provided with one waterproof and breathable component.

[0013] At least one of the pressure relief holes is formed in the bottom wall, and the adhesive layer is adhered to the inner surface of the bottom wall;

[0014] or,

[0015] At least one of the pressure relief holes is formed in the sidewall, and the adhesive layer is bonded to the inner surface of the sidewall.

[0016] In one embodiment, the case includes a bottom wall and a side wall, the bottom wall being disposed opposite the mounting opening, and the side wall surrounding the outer periphery of the bottom wall and forming the receiving cavity together with the bottom wall;

[0017] The bottom wall has a plurality of pressure relief holes arranged in an array, and each pressure relief hole is provided with a waterproof and breathable component. The adhesive layer is bonded to the inner surface of the bottom wall.

[0018] or,

[0019] The sidewall has a plurality of pressure relief holes arranged in an array, and each pressure relief hole is provided with a waterproof and breathable component. The adhesive layer is bonded to the inner surface of the sidewall.

[0020] In one embodiment, the waterproof and breathable layer is a waterproof and breathable membrane, and the air permeability of the waterproof and breathable membrane is 1500 g / (m²). 2 ·24h)~2500g / (m 2•24h), the pore size of the micropores on the waterproof and breathable membrane is 0.1μm to 0.5μm.

[0021] In one embodiment, the waterproof and breathable layer is a metal mesh coated with a hydrophobic coating.

[0022] In one embodiment, the outer periphery of the waterproof and breathable component is sealed with UV adhesive.

[0023] The technical solution of this utility model involves setting a pressure relief hole on the watch case and sealing the pressure relief hole with a waterproof and breathable component. When the air pressure inside the smartwatch fluctuates due to the speaker's sound, the airflow can achieve pressure balance between the inside and outside through the waterproof and breathable layer, significantly reducing the amplitude of air pressure fluctuations inside the watch case. This effectively slows down the aging rate of the waterproof gasket caused by long-term exposure to alternating air pressure, extending the waterproof lifespan of the smartwatch. The waterproof and breathable component adopts a layered structure of "adhesive layer - waterproof and breathable layer - structural layer". While ensuring good structural strength, the structure is simple and compact, occupying little space. Furthermore, the waterproof and breathable component can be assembled simply by bonding it to the inner surface of the watch case.

[0024] Furthermore, by setting an adhesive layer, the waterproof and breathable components can be easily attached to the inner surface of the case wall. The adhesive layer also provides a continuous, uninterrupted annular seal around the pressure relief hole, preventing water from seeping in along the edge of the hole. Simultaneously, it evenly distributes the pressure impact on the waterproof and breathable layer to the case wall, preventing localized warping or rupture. The structural layer provides rigid support for the waterproof and breathable layer, preventing it from being ruptured by air pressure in the event of a drop, impact, or deep-water negative pressure. This further improves the reliability of the waterproof and breathable components, ensuring a more reliable balance of air pressure between the inside and outside of the case. Ultimately, this invention provides a smartwatch with more reliable waterproof performance. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an embodiment of the smart watch provided by this utility model, in which the pressure relief hole is disposed on the bottom wall;

[0027] Figure 2A cross-sectional schematic diagram of an embodiment of the smart watch provided by this utility model, in which the pressure relief hole is disposed on the bottom wall;

[0028] Figure 3 A schematic diagram of the structure of the waterproof and breathable component in one embodiment of the smartwatch provided by this utility model;

[0029] Figure 4 A schematic diagram of the stacked waterproof and breathable components in one embodiment of the smartwatch provided by this utility model;

[0030] Figure 5 A schematic diagram of an embodiment of the smartwatch provided by this utility model, in which the pressure relief hole is disposed on the side wall.

[0031] Explanation of icon numbers:

[0032] 100. Smartwatch; 10. Case; 11. Receiving cavity; 12. Pressure relief hole; 13. Mounting port; 14. Bottom wall; 15. Side wall; 20. Waterproof and breathable component; 21. Adhesive layer; 22. Waterproof and breathable layer; 221. Connecting part; 222. Sealing part; 23. Structural layer.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This utility model proposes a smartwatch 100.

[0038] Please see Figures 1 to 5 In one embodiment of this utility model, the smartwatch 100 includes a watch case 10 and a waterproof and breathable component 20. The watch case 10 has a receiving cavity 11 for housing the internal components of the smartwatch 100. A pressure relief hole 12 penetrating the wall of the watch case 10 is provided, and a mounting opening 13 is provided on the watch case 10, which is used to seal the watch face. The waterproof and breathable component 20 includes an adhesive layer 21, a waterproof and breathable layer 22, and a structural layer 23, sequentially stacked along the outer side of the watch case 10 towards the inner side. The adhesive layer 21 is adhered to the inner surface of the watch case 10. Both the adhesive layer 21 and the structural layer 23 are annular closed structures surrounding the hole, and both are coaxially arranged with the pressure relief hole 12. The waterproof and breathable layer 22 is circular and directly opposite the pressure relief hole 12, sealing the pressure relief hole 12.

[0039] In the technical solution of this utility model, a receiving cavity 11 is formed inside the watch case 10 to accommodate the internal components of the smartwatch 100; a pressure relief hole 12 penetrating the wall of the watch case 10 is provided, and an installation port 13 is also provided on the watch case 10, at which the dial is sealed. The waterproof and breathable component 20 includes an adhesive layer 21, a waterproof and breathable layer 22, and a structural layer 23 stacked sequentially along the outer side of the watch case 10 toward the inner side of the watch case 10; wherein, the adhesive layer 21 is bonded to the inner surface of the watch case 10 and is an annular closed structure surrounding the pressure relief hole 12; the waterproof and breathable layer 22 is positioned directly opposite the pressure relief hole 12 and seals the pressure relief hole 12; the structural layer 23 is an annular closed structure surrounding the pressure relief hole 12 and is coaxially arranged with the adhesive layer 21 and the pressure relief hole 12. By providing a pressure relief hole 12 on the watch case 10 and sealing the pressure relief hole 12 with a waterproof and breathable component 20, when the air pressure inside the smartwatch 100 fluctuates due to the speaker's sound, the airflow can achieve internal and external air pressure balance through the waterproof and breathable layer 22, significantly reducing the amplitude of air pressure fluctuations inside the watch case 10. This effectively slows down the aging rate of the waterproof gasket caused by long-term exposure to alternating air pressure, extending the waterproof lifespan of the smartwatch 100. The waterproof and breathable component 20 adopts a layered structure of "adhesive layer 21 - waterproof and breathable layer 22 - structural layer 23". While ensuring good structural strength, the waterproof and breathable component 20 has a simple and compact structure, occupies little space, and can be assembled simply by bonding it to the inner surface of the watch case 10.

[0040] Furthermore, by setting the adhesive layer 21, the waterproof and breathable component 20 can be easily attached to the inner surface of the shell wall. The adhesive layer 21 can provide a continuous and uninterrupted annular seal around the pressure relief hole, thereby preventing water from seeping in along the edge of the pressure relief hole 12. At the same time, it evenly transmits the air pressure impact on the waterproof and breathable layer 22 to the shell wall, preventing local warping or cracking of the waterproof and breathable layer 22. By setting the structural layer 23, the waterproof and breathable layer 22 can be provided with rigid support. In the event of a drop, impact, or deep water negative pressure, the waterproof and breathable layer 22 can be prevented from being ruptured by air pressure, further improving the reliability of the waterproof and breathable component 20. This further ensures the reliability of the waterproof and breathable component 20 in balancing the air pressure inside and outside the watch case 10, thus making the smart watch 100 provided by this utility model have more reliable waterproof performance.

[0041] In one embodiment of the present invention, the pressure relief hole 12 is formed on the inner surface of the watch case 10 with a circular opening. The waterproof and breathable layer 22 includes a connecting part 221 and a sealing part 222. The connecting part 221 is annular and surrounds the outer periphery of the sealing part 222. The connecting part 221 is sandwiched between the adhesive layer 21 and the structural layer 23. The sealing part 222 matches the shape of the opening of the pressure relief hole 12 formed on the inner surface of the watch case 10, and the sealing part 222 is used to seal the pressure relief hole 12.

[0042] Specifically, the connecting part 221 is annular and surrounds the outer periphery of the sealing part 222, and is sandwiched between the adhesive layer 21 and the structural layer 23. The sealing part 222 matches the shape of the orifice 12 on the inner surface of the case 10 and directly seals the pressure relief hole 12. During assembly, the connecting part 221 is pressed tightly by the adhesive layer 21 and the structural layer 23, and the sealing part 222 remains flat and completely covers the pressure relief hole 12, achieving positioning and sealing. By clamping the connecting part 221 of the waterproof and breathable layer 22 with the adhesive layer 21 and the structural layer 23, the waterproof and breathable layer 22 can be subjected to more uniform force, which can more effectively prevent local warping or damage to the waterproof and breathable layer 22, thereby improving the service life of the waterproof and breathable layer 22. Furthermore, the annular connecting part 221 occupies only a very narrow area around the pressure relief hole 12, without additionally encroaching on the space of the receiving cavity 11. The structure is compact, and the clamping method for fixation is simple and convenient, effectively improving production efficiency.

[0043] In one embodiment of the present invention, the adhesive layer 21 forms a first adhesive surface and a second adhesive surface on opposite sides of the outer side of the watch case 10 pointing towards the inner side of the watch case 10, respectively. The first adhesive surface is bonded to the inner surface of the watch case 10, and the second adhesive surface is bonded to the side of the connecting part 221 facing the adhesive layer 21. The structural layer 23 is pressed onto the side of the connecting part 221 away from the second adhesive surface.

[0044] Furthermore, the adhesive layer 21 has a first adhesive surface and a second adhesive surface facing each other in the direction from the outside of the watch case 10 to the inside of the watch case 10: the first adhesive surface is attached to the inner surface of the watch case 10, and the second adhesive surface is attached to the side of the waterproof and breathable layer 22 connecting part 221 facing the adhesive layer 21. The structural layer 23 is then pressed onto the side of the connecting part 221 away from the second adhesive surface, so that the connecting part 221 is clamped between the adhesive layer 21 and the structural layer 23. This double-sided adhesive structure can completely press the connecting part 221 around without additional mechanical parts, and the edge of the membrane is subjected to uniform force, preventing local lifting or tearing. The adhesive layer 21 simultaneously undertakes the dual functions of "sealing" and "fixing", and by pressing the structural layer 23 and the waterproof and breathable layer 22 together, the connecting part 221 can be clamped between the adhesive layer 21 and the structural layer 23, so that the connecting part 221 of the waterproof and breathable membrane can obtain continuous and uniform compressive stress, thereby more effectively preventing the sealing part 222 from being locally damaged under air pressure impact.

[0045] In one embodiment of this utility model, the structural layer 23 is a polyethylene terephthalate (PET) structural layer 23. Using PET as the structural layer 23 can give the structural layer 23 good rigidity and low water absorption. Furthermore, the PET structural layer 23 can be bonded to the waterproof and breathable layer 22 without glue under hot or cold pressing conditions to form a stable support, which is simple and convenient.

[0046] In one embodiment of this utility model, the adhesive layer 21 is a foam tape adhesive layer 21, and the thickness of the adhesive layer 21 is A, wherein 0.15mm≤A≤0.25mm.

[0047] Specifically, the adhesive layer 21 directly adopts a foam tape adhesive layer 21 with a thickness A of 0.15mm to 0.25mm. The foam tape adhesive layer 21 with this thickness range can not only have sufficient compression reserve to continuously output rebound stress, but also avoid excessive thickness that encroaches on the space of the receiving cavity 11. At the same time, the elastic buffering characteristics of the foam tape adhesive layer 21 can evenly disperse the impact on the diaphragm, reduce the risk of local tearing of the waterproof and breathable layer 22, and make the structure more reliable.

[0048] Furthermore, the thickness of the adhesive layer 21 is 0.2 mm.

[0049] In one embodiment of this utility model, the diameter of the pressure relief hole 12 gradually expands from the outside of the watch case 10 toward the inside of the watch case 10.

[0050] Specifically, the pressure relief hole 12 gradually expands from the outside of the watch case 10 to the inside of the watch case 10 to form a horn-shaped channel with a larger inner diameter and a smaller outer diameter. The outer small diameter maintains a simple appearance, while the inner expansion section reduces airflow resistance and improves air pressure balance efficiency, allowing the pressure difference between the inside and outside to be released quickly. Furthermore, the pressure relief hole 12 with a larger inner diameter and a smaller outer diameter can also weaken the impact of airflow on the waterproof and breathable layer 22, extending the service life of the waterproof and breathable layer 22.

[0051] In one embodiment of the present invention, the watch case 10 includes a bottom wall 14 and a side wall 15. The bottom wall 14 is disposed opposite to the mounting opening 13. The side wall 15 surrounds the outer periphery of the bottom wall 14 and forms a receiving cavity 11 with the bottom wall 14. There are multiple pressure relief holes 12, and each pressure relief hole 12 is provided with a waterproof and breathable component 20.

[0052] At least one pressure relief hole 12 is provided in the bottom wall 14, and the adhesive layer 21 is adhered to the inner surface of the bottom wall 14;

[0053] or,

[0054] At least one pressure relief hole 12 is provided in the sidewall 15, and the adhesive layer 21 is adhered to the inner surface of the sidewall 15.

[0055] Specifically, the watch case 10 has a bottom wall 14 and a side wall 15, which together form a receiving cavity 11; there are multiple pressure relief holes 12, and each pressure relief hole 12 is provided with a waterproof and breathable component 20. At least one pressure relief hole 12 is opened in the bottom wall 14, and the adhesive layer 21 is adhered to the inner surface of the bottom wall 14; or at least one pressure relief hole 12 is opened in the side wall 15, and the adhesive layer 21 is adhered to the inner surface of the side wall 15. Multiple pressure relief holes 12 can increase the instantaneous exhaust volume, thereby improving the efficiency of air pressure balance. Furthermore, setting the pressure relief holes 12 in the bottom wall 14 or the side wall 15 makes the structure more aesthetically pleasing and the air pressure balance efficiency higher. In one embodiment of this utility model, the watch case 10 includes a bottom wall 14 and a side wall 15, the bottom wall 14 is disposed opposite to the mounting opening 13, and the side wall 15 surrounds the outer periphery of the bottom wall 14 and forms a receiving cavity 11 with the bottom wall 14;

[0056] Multiple pressure relief holes 12 arranged in an array are provided on the bottom wall 14, and a waterproof and breathable component 20 is provided for each pressure relief hole 12. The adhesive layer 21 is adhered to the inner surface of the bottom wall 14.

[0057] or,

[0058] Multiple pressure relief holes 12 are arranged in an array on the side wall 15. Each pressure relief hole 12 is provided with a waterproof and breathable component 20. The adhesive layer 21 is adhered to the inner surface of the side wall 15.

[0059] Specifically, the multiple pressure relief holes 12 are arranged in an array, which is more aesthetically pleasing than a randomly distributed structure, and is also easier to manufacture and more efficient.

[0060] In one embodiment of this utility model, the waterproof and breathable layer 22 is a waterproof and breathable membrane with an air permeability of 1500g / (m2·24h) to 2500g / (m2·24h) and a pore size of 0.1μm to 0.5μm on the micropores.

[0061] Specifically, the waterproof and breathable membrane has micropores formed on it to allow gas to pass through. The pore size of the micropores is 0.1μm to 0.5μm. These micropores can block liquid water and dust, meeting the IP68 waterproof requirement; and the pressure is 1500g / (m2·24h) to 2500g / (m2·24h) / (m2·24h). 2 The high air permeability (24h) allows gas to pass through the waterproof and breathable membrane quickly, thereby meeting the need for rapid air pressure balance, reducing the alternating stress on the waterproof rubber ring, ensuring the waterproof reliability of this invention, and extending its waterproof life.

[0062] In one embodiment of this utility model, the waterproof and breathable layer 22 is a metal mesh, and the metal mesh is coated with a hydrophobic coating.

[0063] Specifically, the metal mesh itself has uniform pores, which can quickly conduct airflow and make the air pressure inside and outside the case 10 instantly balanced; after applying the hydrophobic coating, the contact angle of water can be increased, so that water forms beads on the surface of the metal mesh and rolls off, which can effectively prevent water from seeping into the receiving cavity 11 and meet the IP68 waterproof requirements; and the metal mesh has high tensile strength, so it is not easy to break under the conditions of falling, impact or deep water negative pressure, and the structural strength is more reliable.

[0064] Furthermore, the hydrophobic coating can be any hydrophobic coating already available in the art. Examples include polydimethylsiloxane coatings and aerogel-modified coatings.

[0065] In one embodiment of this utility model, the outer periphery of the waterproof and breathable component 20 is sealed with UV adhesive. Applying UV adhesive to the outside of the waterproof and breathable component 20 allows the adhesive layer 21, the waterproof and breathable layer 22, and the structural layer 23 to be wrapped into a single unit, thereby ensuring the structural reliability of the waterproof and breathable component 20 formed by the stacked adhesive layer 21, the waterproof and breathable layer 22, and the structural layer 23. Furthermore, the UV adhesive can bond the formed waterproof and breathable component 20 to the inner surface of the shell wall, allowing it to be more securely installed. In addition, the UV adhesive can seal the gaps between the adhesive layer 21, the waterproof and breathable layer 22, and the structural layer 23, as well as the gap between the adhesive layer 21 and the inner surface of the shell wall, effectively preventing water from seeping into the receiving cavity 11 and ensuring the waterproof reliability of the smartwatch 100 provided by this utility model.

[0066] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A smart watch, characterized by The smart watch comprises: a watch case and a watch dial, the watch case is internally formed with a receiving cavity for accommodating internal components of the smart watch, a pressure relief hole is formed through a wall of the watch case, an installation opening is formed on the watch case, and the watch dial seals the installation opening; a waterproof and breathable assembly, which comprises, in sequence from the outside of the watch case to the inside of the watch case, an adhesive layer, a waterproof and breathable layer and a structural layer, the adhesive layer is adhered to the inner surface of the watch case, the adhesive layer and the structural layer are both annular closed structures surrounding the outer periphery of the hole, and the adhesive layer and the structural layer are coaxially arranged with the pressure relief hole, the waterproof and breathable layer is circular and arranged opposite to the pressure relief hole, and the waterproof and breathable layer seals the pressure relief hole.

2. The smart watch of claim 1, wherein, The hole opening of the pressure relief hole formed in the inner surface of the watch case is circular, the waterproof and breathable layer comprises a connecting portion and a sealing portion, the connecting portion is annular and annularly arranged on the outer periphery of the sealing portion, the connecting portion is sandwiched between the adhesive layer and the structural layer, and the sealing portion is matched with the hole opening of the pressure relief hole formed in the inner surface of the watch case, and the sealing portion is used to seal the pressure relief hole.

3. The smart watch of claim 2, wherein, The adhesive layer is formed with a first adhesive surface and a second adhesive surface on opposite sides in the direction from the outside of the watch case to the inside of the watch case, the first adhesive surface is adhered to the inner surface of the watch case, the second adhesive surface is adhered to one side of the connecting portion facing the adhesive layer, and the structural layer is pressed on one side of the connecting portion away from the second adhesive surface.

4. The smart watch of claim 1, wherein, The structural layer is a polyethylene terephthalate structural layer. The adhesive layer is a foam tape adhesive layer, and the thickness of the adhesive layer is A, wherein 0.15mm≤A≤0.25mm.

5. The smart watch of claim 1, wherein, The hole diameter of the pressure relief hole is gradually expanded from the outside of the watch case to the inside of the watch case.

6. The smart watch of any one of claims 1 to 5, wherein, The watch case comprises a bottom wall and a side wall, the bottom wall is arranged opposite to the installation opening, the side wall is annularly arranged on the outer periphery of the bottom wall and forms the receiving cavity together with the bottom wall, the number of the pressure relief holes is plural, and each pressure relief hole is correspondingly provided with one waterproof and breathable assembly; At least one pressure relief hole is formed in the bottom wall, and the adhesive layer is adhered to the inner surface of the bottom wall. Alternatively, At least one pressure relief hole is formed in the side wall, and the adhesive layer is adhered to the inner surface of the side wall.

7. The smart watch of any one of claims 1 to 5, wherein, The watch case comprises a bottom wall and a side wall, the bottom wall is arranged opposite the installation opening, and the side wall is annularly arranged on the outer periphery of the bottom wall and forms a receiving cavity together with the bottom wall; A plurality of pressure relief holes are arranged in an array on the bottom wall, each pressure relief hole is correspondingly provided with one waterproof and breathable assembly, and the adhesive layer is adhered to the inner surface of the bottom wall. Alternatively, A plurality of pressure relief holes are arranged in an array on the side wall, each pressure relief hole is correspondingly provided with one waterproof and breathable assembly, and the adhesion layer is adhered to the inner surface of the side wall.

8. The smart watch of any one of claims 1 to 5, wherein, The waterproof and breathable layer is a waterproof and breathable film, the air permeation amount of the waterproof and breathable film is 1500g / (m 2 ·24h)~2500g / (m 2 ·24h), and the pore size of the micropores on the waterproof and breathable film is 0.1μm~0.5μm.

9. The smart watch of any one of claims 1 to 5, wherein, The waterproof and breathable layer is a metal mesh, and the metal mesh is coated with a hydrophobic coating.

10. The smart watch of any one of claims 1 to 5, wherein, The outer periphery of the waterproof and breathable assembly is sealed with UV glue.

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