CN117687289A - Multi-layer structure watch capable of avoiding gas shielding - Google Patents

Abstract

The invention provides a multi-layer structure watch capable of avoiding gas shielding, which is sequentially provided with a sealing cavity, a first heavy sealing structure, a water vapor preventing cavity and a second heavy sealing structure from inside to outside; the seal cavity is sealed in the first resealing structure; the moisture-proof cavity is filled with liquid and sealed between the first resealing structure and the second resealing structure. The first heavy seal structure can avoid the liquid in the vapor proof cavity from entering the seal cavity, and the second heavy seal structure isolates the vapor proof cavity from the outer side of the watch with the multilayer structure, so that the liquid can be prevented from leaking. When in the steam environment, if steam passes through the second heavy seal structure, steam will fuse to liquid, can not pass through first heavy seal structure again, avoids causing the harm to inner structure. Be provided with the holding tank that is used for holding gaseous on the chamber lateral wall in waterproof vapour chamber, when the liquid in waterproof vapour chamber is not full of, the gaseous automatically entering holding tank in the waterproof vapour intracavity to avoid gas to cause the shielding to the time demonstration.

Description

Multi-layer structure watch capable of avoiding gas shielding

The application is a divisional application with the application date of 2022, 06 and 15, the application number of 2022106804754 and the invention and the name of a multi-layer structure watch with a waterproof function.

Technical Field

The invention relates to the field of watches, in particular to a multi-layer structure watch capable of avoiding gas shielding.

Background

The watches in existing designs typically have a waterproof sealing function that prevents liquids from entering the watch. When the user wears the watch in the steam environment, for example sauna, steamed dish preparation etc., because ambient temperature is higher, seal structure can be inefficacy, and steam is more easy to pass seal structure and enter into the table inside for liquid water, causes the damage to the table, and then influences the use.

Disclosure of Invention

The invention provides a multi-layer structure watch capable of avoiding gas shielding, which can effectively avoid damage to the watch caused by water vapor in the environment and avoid shielding of time display caused by water vapor.

The technical scheme of the invention is as follows:

the invention provides a multi-layer structure watch capable of avoiding gas shielding, which is sequentially provided with a sealing cavity, a first heavy sealing structure, a water vapor preventing cavity and a second heavy sealing structure from inside to outside; the seal cavity is sealed within the first resealing structure; the waterproof vapor cavity is filled with liquid capable of fusing water vapor, and is sealed between the first heavy sealing structure and the second heavy sealing structure; the waterproof steam chamber is characterized in that the chamber side wall of the waterproof steam chamber is provided with an accommodating groove for accommodating gas, and the accommodating groove is positioned at the top of the waterproof steam chamber.

Wherein, the holding groove is the annular that sets up along the circumference of multilayer structure wrist-watch.

Wherein the multi-layer structure watch comprises an inner shell and an outer shell; the seal cavity is formed in the inner shell, and the inner shell is arranged in the outer shell; the first resealing structure is arranged on the inner shell and seals the sealing cavity in the inner shell; the second heavy sealing structure is arranged on the outer shell and seals the inner shell in the outer shell, and the waterproof steam cavity is positioned between the inner shell and the outer shell;

the second heavy sealing structure comprises a second top sealing ring and a second bottom sealing ring, the outer shell comprises an outer mirror, an outer middle frame and an outer bottom cover, the outer mirror is in sealing connection with the outer middle frame through the second top sealing ring, the outer bottom cover is in sealing connection with the outer middle frame through the second bottom sealing ring, and the inner shell is sealed in a closed space formed by the outer mirror, the second top sealing ring, the outer middle frame, the second bottom sealing ring and the outer bottom cover in a surrounding mode; the accommodating groove is arranged on the outer middle frame.

Wherein the inner surface of the outer mirror is close to the inner shell relative to the top surface of the accommodating groove.

The inner shell comprises an inner mirror, an inner middle frame and an inner bottom cover, wherein the inner mirror is in sealing connection with the inner middle frame through the first top sealing ring, the inner bottom cover is in sealing connection with the inner middle frame through the first bottom sealing ring, and the inner mirror, the first top sealing ring, the inner middle frame, the first bottom sealing ring and the inner bottom cover enclose to form a sealing cavity.

Wherein, the endoscope and the external mirror are integrally formed.

Wherein, the inner bottom cover and the outer bottom cover of the outer shell are integrally formed.

Wherein the inner shell is suspended in the outer shell.

Wherein, the inner shell with be connected with support piece between the shell.

The support piece is fixedly connected between the inner shell and the outer shell so as to fix the relative positions of the inner shell and the outer shell; or,

the support member is rotatably connected between the inner shell and the outer shell so that the inner shell and the outer shell can rotate relatively.

Compared with the prior art, the invention has the beneficial effects that: the first heavy seal structure seals the seal cavity to avoid the liquid in the vapor proof cavity to enter the seal cavity, the second heavy seal structure isolates the vapor proof cavity from the outer side of the watch with the multilayer structure, and the liquid in the vapor proof cavity can be prevented from leaking. When the watch with the multilayer structure and the waterproof function is in a water vapor environment, if water vapor passes through the second sealing structure, the water vapor enters the water vapor prevention cavity to be contacted with the liquid so as to be cooled and fused into the liquid, and then the water vapor can not pass through the first sealing structure any more, so that the damage to the internal structure caused by the water vapor entering the sealing cavity is avoided, and the normal operation of the watch with the multilayer structure is ensured; when the liquid of the vapor-proof cavity is not full, the gas in the vapor-proof cavity can automatically enter the top accommodating groove of the vapor-proof cavity, so that shielding of time display caused by the gas in the vapor-proof cavity is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present invention.

Fig. 1 is a schematic perspective view of a watch with a multi-layer structure according to a first embodiment of the present invention.

Fig. 2 is a schematic diagram of the front structure of the watch of fig. 1.

Fig. 3 is a cross-sectional view at a-O-B of the watch of fig. 2 in a multi-layer structure.

Fig. 4 is a rear exploded view of the multi-layer wristwatch of fig. 1.

Fig. 5 is a cross-sectional view at C-O-D of the multi-layer wristwatch of fig. 2.

Fig. 6 is an exploded view of the multi-layer wristwatch of fig. 1 at an injection device.

Fig. 7 is an enlarged view at M in fig. 6.

Fig. 8 is an enlarged view at E in fig. 5.

Fig. 9 is an exploded view of the multi-layer wristwatch of fig. 1 at a pressure relief device.

Fig. 10 is an enlarged view at N in fig. 9.

Fig. 11 is an enlarged view at F in fig. 5.

Fig. 12 is a cross-sectional view of the pressure relief device of fig. 11 in a pressure relief state.

Fig. 13 is a cross-sectional view of a multi-layer wristwatch according to a second embodiment of the invention.

Fig. 14 is a cross-sectional view of a multi-layer wristwatch according to a third embodiment of the invention.

Fig. 15 is a cross-sectional view of the injection plug of the injection device of fig. 14 during injection of water.

Fig. 16 is a cross-sectional view of a wristwatch of a multilayer structure according to a fourth embodiment of the present invention.

Fig. 17 is a cross-sectional view of a pressure relief device for a wristwatch of a multilayer structure according to a fifth embodiment of the invention.

Fig. 18 is a cross-sectional view of the pressure relief device of fig. 17 in a pressure relief state.

Fig. 19 is a cross-sectional view of a pressure relief device of a wristwatch of a multi-layer structure according to a sixth embodiment of the invention.

Fig. 20 is a cross-sectional view of the pressure relief device of fig. 19 in a pressure relief state.

Fig. 21 is a cross-sectional view of a pressure relief device of a wristwatch of a multi-layer structure according to a seventh embodiment of the invention.

Fig. 22 is a cross-sectional view of the pressure relief device of fig. 21 in a pressure relief state.

Fig. 23 is a cross-sectional view of a pressure relief device of a wristwatch with a multilayer structure according to an eighth embodiment of the invention in a pressure relief state.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms of directions used in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present invention only with reference to the orientation of the drawings, and are not intended to limit the present invention.

The words "first," "second," and the like in the terminology of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, 2 and 3, a multi-layer watch 100 with waterproof function is provided according to a preferred embodiment of the present invention, and the multi-layer watch 100 with waterproof function is provided with a sealing cavity 90, a first resealing structure 10, a waterproof cavity 30 and a second resealing structure 20 from inside to outside. The seal cavity 90 is configured to receive the bezel 900, the seal cavity 90 being sealed within the first resealing mechanism 10. The vapor proof cavity 30 is filled with a liquid (not shown), and the vapor proof cavity 30 is sealed between the first resealing structure 10 and the second resealing structure 20, so that the liquid can be sealed between the first resealing structure 10 and the second resealing structure 20. Preferably, the liquid is water, but may be other liquid which can be fused with water vapor.

The first resealing structure 10 seals the sealing cavity 90 to prevent the liquid in the vapor proof cavity 30 from entering the sealing cavity 90, and the second resealing structure 20 isolates the vapor proof cavity 30 from the outside of the multi-layer watch 100 having the vapor proof function, so that the liquid in the vapor proof cavity 30 can be prevented from leaking. When the multi-layer structure watch 100 with the waterproof function is in the water vapor environment, if water vapor passes through the second heavy seal structure 20, the water vapor enters the waterproof cavity 30 to be contacted with the liquid so as to be cooled and fused into the liquid, and then the water vapor can not pass through the first heavy seal structure 10 any more, so that the damage to the internal structure caused by the water vapor entering the seal cavity 90 is avoided, and the normal operation of the multi-layer structure watch 100 with the waterproof function is ensured.

In the present embodiment, the multi-layer structure wristwatch 100 with the waterproof function includes an inner case 1 and an outer case 2; the inner shell 1 is arranged in the outer shell 2; the first resealing structure 10 is disposed on the inner housing 1 and seals the sealing chamber 90 in the inner housing 1; the second resealing structure 20 is disposed on the outer shell 2 and seals the inner shell 1 within the outer shell 2 with the moisture resistant cavity 30 positioned between the inner shell 1 and the outer shell 2. Through setting up first heavy seal structure 10 and second heavy seal structure 20 respectively on inner shell 1 and shell 2, can realize the relative independence of first heavy seal structure 10 and second heavy seal structure 20, can assemble respectively with dismantle to avoid in the dismouting in-process waterproof vapour intracavity 30 liquid contact table core 900. When the meter core 900 is disassembled, the outer shell 2 is opened first to expose the water vapor preventing cavity 30, and after the liquid in the water vapor preventing cavity is discharged completely, the inner shell 1 is opened again to maintain the meter core 900, so that the meter core 900 is thoroughly prevented from contacting the liquid.

More specifically, in the present embodiment, as shown in fig. 3, the inner shell 1 is suspended in the outer shell 2, so that the vapor proof cavity 30 and its liquid can be more fully covered outside the inner shell 1, and the vapor proof effect can be better achieved.

Referring to fig. 3 and 4, a support 3 is connected between the outer wall of the inner case 1 and the inner wall of the outer case 2. The inner shell 1 can be positioned substantially at a certain position within the outer shell 2 by means of the support 3. In other embodiments, the support member 3 may not be provided between the inner case 1 and the outer case 2, and the two may be moved relatively, so that the liquid in the moisture-proof cavity 30 may have a buffering and damping effect on the inner case 1 and the watch core 900.

In this embodiment, the supporting member 3 is fixedly connected between the inner casing 1 and the outer casing 2, so that the relative positions of the inner casing 1 and the outer casing 2 are fixed, and the relative movement of the two is avoided, so that the user can observe the time shown by the watch core 900 conveniently. In other embodiments, the support member 3 may not be provided between the inner case 1 and the outer case 2, and the two may be moved relatively, so that the liquid in the moisture-proof cavity 30 may have a buffering and damping effect on the inner case 1 and the watch core 900.

Further, support piece 3 is more than two, encircles the circumference of inner shell 1 and arranges, utilizes support piece 3 more than two to support the location to inner shell 1, can play better fixed effect, and support piece 3 encircles the axial of inner shell 1 and arranges simultaneously, can avoid support piece 3 to cause shielding to the positive time demonstration of inner shell 1. In this embodiment, three supporting members 3 are respectively disposed at 6 points, 12 points, and 9 points of the multi-layer watch 100 with waterproof function. Here, in other embodiments, the support 3 may be two, four, or another number.

The first resealing structure 10 includes a first top seal ring 101 and a first bottom seal ring 102. The inner shell 1 comprises an inner mirror 11, an inner middle frame 12 and an inner bottom cover 13, wherein the inner mirror 11 is in sealing connection with the inner middle frame 12 through a first top sealing ring 101, the inner bottom cover 13 is in sealing connection with the inner middle frame 12 through a first bottom sealing ring 102, and a meter core 900 is sealed in a closed space formed by enclosing the inner mirror 11, the first top sealing ring 101, the inner middle frame 12, the first bottom sealing ring 102 and the inner bottom cover 13. The inner shell 1 comprises three parts of an inner mirror 11, an inner middle frame 12 and an inner bottom cover 13, and can form a closed space for accommodating the watch core 900 by combining the first top sealing ring 101 and the first bottom sealing ring 102, so that liquid is prevented from contacting the watch core 900. The endoscope 11 may be made of a light-transmitting material so that the user can see the time indicated by the watch movement 900. Here, in other embodiments, the inner mirror 11 and the inner middle frame 12 may be integrally formed with a transparent material, or the inner middle frame 12 and the inner bottom cover 13 may be integrally formed with each other, and the first resealing structure 10 may only include the first bottom sealing ring 102 or the first top sealing ring 101.

The support member 3 is rod-shaped, two ends of the support member 3 are respectively connected to the inner middle frame 12 and the outer shell 2, the support member 3 is rod-shaped, the volume is relatively small, the occupied space of the water vapor preventing cavity 30 is small, and the connection between the inner middle frame 12 and the outer shell 2 is convenient. More specifically, one end of the inner frame is integrally formed with the inner middle frame 12, and the other end of the inner frame is detachably and fixedly connected with the outer shell 2. One end of the supporting rod is integrally formed with the inner middle frame 12, so that no seam exists between the supporting piece 3 and the inner middle frame 12, and the liquid entering the connecting structure in the inner shell 1 is reduced. The other end of the support 3 is detachable from the outer shell 2 to detach the inner shell 1 from the outer shell 2. Here, in other embodiments, the supporting member 3 may be integrally formed with the housing 2 at one end, and detachably and fixedly connected with the inner middle frame 12 at the other end; the shape of the support 3 may also be other shapes such as block, sheet, etc.

In this embodiment, the multi-layer structure watch 100 further includes a crown assembly 4 for adjusting time, the crown assembly 4 includes a crown 41 and a bar shaft 42, the crown 41 is located outside the multi-layer structure watch 100, the crown 41 is connected to the watch core 900 through the bar shaft 42, and the crown 41 and the bar shaft 42 are located at 3 points of the multi-layer structure watch 100. The three rod-shaped supporting pieces 3 and the bar shaft 42 extend along the radial direction of the multi-layer structure watch 100 with the steam-proof function, and can be visually displayed through the shell 2, and a user can see the three supporting pieces 3 and the bar shaft 42 through the shell 2, so that the three supporting pieces 3 and the bar shaft 42 can play a role in dial indication, and the user can confirm time conveniently. The bar shaft 42 of the crown assembly 4 is in sealing connection with the inner shell 1 through the first crown seal ring 43, so as to prevent liquid from entering the watch core 900 through a gap between the bar shaft 42 and the inner shell 1; the crown 41 of the crown assembly 4 is sealingly connected to the housing 2 by a second crown seal 44 to avoid leakage of liquid. The first crown seal 43 may form part of the first reseal structure 10 and the second crown seal 44 may form part of the second reseal structure 20.

The second double seal structure 20 includes a second top seal 201 and a second bottom seal 202. The outer shell 2 comprises an outer mirror 21, an outer middle frame 22 and an outer bottom cover 23, the outer mirror 21 is in sealing connection with the outer middle frame 22 through a second top sealing ring 201, the outer bottom cover 23 is in sealing connection with the outer middle frame 22 through a second bottom sealing ring 202, and the inner shell 1 is sealed in a closed space formed by enclosing the outer mirror 21, the second top sealing ring 201, the outer middle frame 22, the second bottom sealing ring 202 and the outer bottom cover 23.

The outer mirror 21, the outer middle frame 22 and the outer bottom cover 23 of the outer casing 2, in combination with the second top sealing ring 201 and the second bottom sealing ring 202, can form a closed space for accommodating the watch core 900, and prevent the liquid from contacting the watch core 900. The outer mirror 21 may be made of a light-transmitting material so that the user can see the time indicated by the watch movement 900. Here, in other embodiments, the outer mirror 21 and the outer middle frame 22 may be integrally formed of transparent materials, or the outer middle frame 22 and the outer bottom cover 23 may be integrally formed, and the second resealing structure 20 may only include the second bottom sealing ring 202 or the second top sealing ring 201.

The outer diameter of the outer mirror 21 is larger than the outer diameter of the inner shell 1 so that the three supports 3 and the bar shaft 42 can each be visually presented to the outer shell 2 through the outer mirror 21.

The outer middle frame 22 is provided with a clamping groove 220 on one surface facing the outer bottom cover 23, and the other end of the supporting member 3 is pressed in the clamping groove 220 through the second bottom sealing ring 202 and the outer bottom cover 23. During assembly, the other end of the support piece 3 is placed into the clamping groove 220, then the second bottom sealing ring 202 is placed in the outer middle frame 22, the outer bottom cover 23 and the outer middle frame 22 are assembled, the outer bottom cover 23 is used for applying acting force to the second bottom sealing ring 202, the other end of the support rod is pressed in the clamping groove 220, and meanwhile sealing connection between the outer middle frame 22 and the outer bottom cover 23 is achieved by the aid of the second bottom sealing ring 202, so that assembly of the support piece 3 and sealing arrangement of the outer shell 2 are facilitated.

In this embodiment, the support member is fixedly connected between the inner shell and the outer shell so as to fix the relative positions of the inner shell and the outer shell, and in other embodiments, the support member may be rotatably connected between the inner shell and the outer shell so as to enable the inner shell and the outer shell to rotate relatively. For example, the support piece is cylindric, uses two support pieces to set up respectively at 3 positions and 9 positions, and support piece rotates with inner shell or shell to be connected for inner shell and shell can transversely rotate relatively, so that the inner shell keeps in the horizontality, and then the user of facilitating the use watches time.

As shown in fig. 3 and 4, the surface of the outer middle frame 22 facing the outer bottom cover 23 is stepped, and the step surface is provided with a clamping groove 220 and a second bottom sealing ring 202, so as to facilitate positioning and assembling of the outer bottom cover 23 and the outer middle frame 22.

Further, the surface of the outer middle frame 22 facing the bottom cover is in a two-stage step shape, and is provided with a first stage step surface 221 and a second stage step surface 222, wherein the first stage step surface 221 is close to the inner shell 1 relative to the second stage step surface 222; the peripheral edge of the outer bottom cover 23 is in a secondary step shape matched with the outer middle frame 22. The two second bottom sealing rings 202 are respectively arranged on the first-stage step surface 221 and the second-stage step surface 222, the clamping groove 220 is arranged on the first-stage step surface 221, and the sealing performance can be effectively ensured by utilizing the two-stage step-shaped structure between the outer bottom cover 23 and the outer middle frame 22 and the two second bottom sealing rings 202, so that water seepage from the clamping groove 220 is avoided.

The second step surface 222 is provided with an annular groove 2220, wherein a second bottom sealing ring 202 is disposed in the annular groove 2220, so as to facilitate positioning between the second bottom sealing ring 202 and the outer middle frame 22, and facilitate assembly connection.

As shown in fig. 5, 6, 7 and 8, the multi-layer watch 100 with waterproof function further comprises an injection device 5, wherein the injection device 5 comprises an injection channel 50, an injection cover 51 and an injection plug 52, the injection channel 50 is communicated with the inner side and the outer side of the multi-layer watch 100, more specifically, the injection channel is communicated with the outer side of the multi-layer watch 100 and the waterproof cavity 30, the injection plug 52 is inserted in the injection channel 50, and a seal is arranged between the injection channel 50 and the injection plug 52; the injection cover 51 is covered at the inlet of the injection channel 50 to limit the injection plug 52 to the injection channel 50, so that the injection plug 52 is not easy to fall out, and the sealing performance is improved.

By opening the injection cap 51 by the injection means 5, the injection plug 52 is pulled out, and the liquid can be injected into the vapor-proof chamber 30 after exposing the injection passage 50. The injection channel 50 forms a channel for injecting liquid, the injection cover 51 and the injection plug 52 form a double protection structure, the injection channel 50 is sealed, the sealing performance of the injection channel 50 is ensured, and the liquid is prevented from flowing out. When the injection of the liquid is required, the injection cover 51 is opened to expose the injection plug 52, and then the injection plug 52 is pulled out, so that the injection channel 50 can be completely opened, and the liquid can be injected into the water vapor preventing cavity 30 by entering the injection channel 50 through the needle tube.

In the present embodiment, the injection device 5 is disposed on the outer middle frame 22 of the watch 100 with a multi-layer structure, so that the influence of disassembly and maintenance on the injection device 5 can be avoided. Of course, in other embodiments, the injection device 5 may also be provided on the outer cover 23 or other parts of the housing 2.

The shell 2 is provided with an injection through hole 105, and the injection through hole 105 is communicated with the outer side of the shell 2 and the steam-proof cavity 30. More specifically, injection through holes 105 are provided on the outer middle frame 22 to communicate the inner and outer sides of the outer middle frame 22.

The injection device further comprises an injection pipe 53, wherein the outer wall of the injection pipe 53 is in interference fit with the injection through hole 105, and a sealing structure can be arranged to ensure the sealing performance of the injection pipe and the injection through hole. The space within the injection tube 53 forms the injection channel 50. By forming the injection passage 50 by the injection pipe 53, the processing accuracy requirement for the injection through hole 105 can be reduced, and the aperture of the injection through hole 105 can be set relatively large to facilitate processing and molding. Here, in other embodiments, the injection passage 50 may be formed directly through the injection through hole 105 without providing the injection pipe 53.

As shown in fig. 7, the injection pipe 53 includes a first injection pipe 531 and a second injection pipe 532 coaxially disposed, the second injection pipe 532 is close to the water vapor preventing cavity 30 relative to the first injection pipe 531, the outer diameter of the first injection pipe 531 is larger than the outer diameter of the second injection pipe 532, and the outer walls of the first injection pipe 531 and the second injection pipe 532 are transited through inclined planes. The first injection pipe 531 is interference fit with the injection through hole 105, and the second injection pipe 532 is clearance fit with the injection through hole 105. The second injection pipe 532 is first inserted into the injection through hole 105, and then the first injection pipe 531 is inserted into the injection through hole 105 through the inclined surface, thereby facilitating the assembly of the injection pipe 53 into the injection through hole 105. The first injection tube 531 has the same inner diameter as the second injection tube 532 to facilitate insertion and withdrawal of the injection plug 52.

The injection pipe 53 further includes an injection retainer 533, and the injection retainer 533 is coaxially disposed with the first injection pipe 531 and the second injection pipe 532. The first injection tube 531 is connected between the injection collar 533 and the second injection tube 532. The outer diameter of the injection retainer 533 is larger than the outer diameter of the first injection pipe 531, and an injection outer step is formed between the injection retainer 533 and the outer circumferential surface of both the first injection pipe 531. The injection outer step formed by the injection retainer 533 can be caught at the outer side edge of the injection through hole 105 when the injection pipe 53 is assembled, so that the depth of insertion of the injection pipe 53 on the multi-layer wristwatch 100 can be limited and the injection device 5 can be secured in place.

As shown in fig. 7 and 8, the injection plug 52 is cylindrical and has opposite sealing ends 52a and peripheral ends 52b. The sealing end 52a is inserted into the injection channel 50. The injection device 5 further comprises an injection sealing ring 54, the injection sealing ring 54 being arranged between the injection plug 52 and the injection channel 50 to achieve a sealed connection with the injection channel 50. The peripheral end 52b is located at the outer side of the injection passage 50 and is located inside the injection cap 51, and the injection plug 52 can be easily pulled out by the peripheral end 52b.

The injection device 5 further comprises an injection sealing ring 54. The injection plug 52 is provided with an injection ring groove 524 along the circumferential direction thereof, and the injection sealing ring 54 is limited in the injection ring groove 524, so that the injection sealing ring 54 is positioned on the injection plug 52, and the injection sealing ring 54 can be pulled out together when the injection plug 52 is pulled out.

The number of the injection sealing rings 54 is two, and the two sealing rings are arranged along the axial direction of the injection plug 52, so that the sealing effect can be better achieved. Two injection sealing rings 54 are respectively limited in the two injection ring grooves 524 by two injection ring grooves 524, so that the two injection sealing rings 54 are positioned on the injection plug 52, and the two injection sealing rings 54 can be carried out together when the injection plug 52 is pulled out. In this embodiment, the injection seal ring 54 is used to seal the injection plug 52 and the injection channel 50, and in other embodiments, the injection plug may be made of silica gel or rubber, and is in interference fit with the injection channel to realize sealing.

The peripheral surface of the injection plug 52 is provided with the annular flange 521, the outer diameter of the annular flange 521 is smaller than the inner diameter of the injection retainer ring 533, the inner diameter of the injection retainer ring 533 is larger than the inner diameter of the first injection pipe 531, an injection inner step is formed in the injection channel 50 between the injection retainer ring 533 and the first injection pipe 531, when the injection plug 52 is inserted into the injection pipe 53, the annular flange 521 is positioned in the injection retainer ring 533, and the annular flange 521 is abutted against the first injection pipe 531, namely, the annular flange 521 is abutted against the injection inner step, so that the insertion depth of the injection plug 52 into the injection channel 50 can be limited, and meanwhile, the injection plug 52 and the injection pipe 53 are guaranteed to be assembled in place, so that the outer end 52b can be better exposed outside the injection pipe 53, and the injection plug can be conveniently pulled out again.

The peripheral end 52b of the injection plug 52 is provided with an outer flange 522 by which the force applied to the injection plug 52 can be facilitated. Further, the outer flange 522 is formed in an annular shape surrounding the injection plug, and the peripheral surface of the outer flange 522 is formed in a zigzag shape, so that when the injection plug 52 is pulled out by the zigzag outer flange 522, the injection plug 52 can be pulled out while rotating, thereby facilitating the removal of the injection plug 52. Here, in other embodiments, the outer flange may also be a plurality of protrusions each provided at the peripheral end.

An injection cap 51 is provided at the inlet of the injection passage 50 to enclose the injection plug 52 within the case of the watch 100 and the injection cap 51. A seal may be provided between the injection cover 51 and the inlet of the injection passage 50 to seal the injection plug 52 between the case of the multi-layer wristwatch 100 and the injection cover 51, further improving the sealing performance.

In the present embodiment, the injection cap 51 is screwed with the outer circumferential surface of the injection collar 533 of the injection pipe 53, so that the injection cap 51 is covered at the inlet of the injection channel 50, where in other embodiments, the injection cap 51 may be directly connected with the housing 2, and may be screwed, snap-connected, or connected by other fasteners.

The injection device 5 further comprises a chain 55. A chain 55 is connected between the injection cover 51 and the outer middle frame 22 of the housing 2, and the injection cover 51 can be hung on the housing 2 after being opened by the chain 55, so that the loss is avoided. One end of the chain 55 is in rotational engagement with the peripheral surface of the injection cap 51 to avoid affecting rotational removal of the injection cap 51. The other end of the chain 55 is connected to the housing 2.

More specifically, the injection cap 51 includes an outer cap 511 and an inner cap 512, the outer cap 511 is screw-coupled with the inner cap 512, and an annular rotation groove 515 is formed therebetween, one end of the chain 55 is provided with a rotation ring 551, and the rotation ring 551 is rotatably provided in the rotation groove 515, thereby achieving a rotational fit between the chain 55 and the injection cap 51.

As shown in fig. 3, 9, 10 and 11, the multi-layer watch 100 further includes a pressure relief device 6, the pressure relief device 6 includes a pressure relief channel 60, a pressure relief piece 61 and a pressure relief elastic piece 62, the pressure relief channel 60 is communicated with the inner side and the outer side of the multi-layer watch 100, more specifically, the pressure relief channel 60 is communicated with the outer side of the multi-layer watch 100 and the moisture proof cavity 30 therein; the pressure release piece 61 and the pressure release channel 60 are in sliding fit, and the relative sliding direction of the pressure release piece 61 and the pressure release channel 60 is the axial direction of the pressure release channel 60, so that the pressure release piece 61 moves between a sealing position and a pressure release position, and the sealing position is close to the vapor-proof cavity 30 in the watch 100 with the multilayer structure relative to the pressure release position, so that the pressure release piece 61 can move close to or far away from the vapor-proof cavity 30 in the watch 100 with the multilayer structure. The pressure release elastic member 62 is connected between the pressure release member 61 and the pressure release channel 60, and is used for providing a force for moving the pressure release member 61 towards the vapor proof cavity 30.

When the pressure relief piece 61 is located at the sealing position, the pressure relief piece 61 is in sealing fit with the pressure relief channel 60, and the pressure relief device 6 is in a sealing state.

Under the condition that the pressure in the waterproof vapor cavity 30 is overlarge, under the action of the internal pressure of the waterproof vapor cavity 30, the pressure release piece 61 can overcome the acting force of the pressure release elastic piece to move towards the pressure release position, when the pressure release piece 61 moves to the pressure release position, the pressure release piece 61 is in clearance fit with the pressure release channel 60, the waterproof vapor cavity 30 is in a communication state with the outer side of the multi-layer structure watch 100 so as to release the pressure in the waterproof vapor cavity 30, the pressure release elastic piece 62 is in an elastic deformation state, and can provide the acting force towards the sealing position to the pressure release piece 61. The sealed position is adjacent to the inside of the multi-layer wristwatch 100, i.e., adjacent to the moisture proof cavity 30, relative to the pressure relief position. When the pressure in the vapor-proof cavity 30 is released to a certain extent, the pressure release member 61 moves towards the sealing position under the action of the pressure release elastic member 62, so that the pressure release member 61 and the pressure release channel 60 are in a sealing state to limit further pressure release.

In this embodiment, as shown in fig. 10 and 11, the pressure relief through hole 106 is provided on the multi-layer watch 100, and the pressure relief through hole 106 communicates with the outside of the multi-layer watch 100 and the vapor proof cavity 30. More specifically, the pressure release through holes 106 are provided on the outer center 22 to communicate the inner and outer sides of the outer center 22.

The pressure relief device 6 further comprises a pressure relief pipe 63, the pressure relief pipe 63 is arranged in the pressure relief through hole 106, the outer wall of the pressure relief pipe 63 can be in interference fit with the pressure relief through hole 106, and a sealing structure can be arranged to ensure the sealing performance of the pressure relief pipe 63 and the pressure relief through hole 106. The space within the pressure relief tube 63 forms the pressure relief channel 60. By forming the pressure relief channel 60 by the pressure relief pipe 63, the processing precision requirement on the pressure relief through hole 106 can be reduced, and the aperture of the pressure relief through hole 106 can be relatively large so as to facilitate processing and forming. Here, in other embodiments, the pressure relief channel 60 may be formed directly through the pressure relief through hole 106 without providing the pressure relief pipe 63.

As shown in fig. 10, the pressure relief tube 63 includes a first pressure relief tube 631 and a second pressure relief tube 632 coaxially disposed, the second pressure relief tube 632 is close to the vapor proof cavity 30 relative to the first pressure relief tube 631, the outer diameter of the first pressure relief tube 631 is larger than the outer diameter of the second pressure relief tube 632, and the outer walls of the first pressure relief tube 631 and the second pressure relief tube 632 are in transition through inclined planes. The first pressure relief pipe 631 is in interference fit with the pressure relief through hole 106, and the second pressure relief pipe 632 is in clearance fit with the pressure relief through hole 106. The second pressure relief pipe 632 is inserted into the pressure relief through hole 106, and then the first pressure relief pipe 631 is inserted into the pressure relief through hole 106 through the inclined plane, so that the pressure relief pipe 63 is conveniently assembled into the pressure relief through hole 106.

The pressure relief pipe 63 further comprises a pressure relief check ring 633, wherein the pressure relief check ring 633 is coaxially arranged with the first pressure relief pipe 631 and the second pressure relief pipe 632, and the first pressure relief pipe 631 is connected between the pressure relief check ring 633 and the second pressure relief pipe 632. The outer diameter of the pressure release check ring 633 is larger than that of the first pressure release pipe 631, and a pressure release outer step is formed between the outer circumferential surfaces of the pressure release check ring 633 and the first pressure release pipe 631. When assembling pressure release pipe 63, the outside edge department of pressure release through-hole 106 can be kept off to the pressure release outer step that pressure release retaining ring 633 formed, can restrict the degree of depth that pressure release pipe 63 inserted the shell 2 of multilayer structure wrist-watch, can guarantee simultaneously that pressure release pipe 63 assembles in place.

In this embodiment, the pressure relief piece 61 includes a pressure relief post 611 and a pressure relief crown 612, the pressure relief post 611 is slidably disposed in the pressure relief channel 60 along the axial direction of the pressure relief channel 60, the pressure relief post 611 has a pressure relief inner end 611b and a pressure relief outer end 611a, the pressure relief inner end 611b is close to the waterproof vapor cavity 30 inside the multi-layer watch 100 relative to the pressure relief outer end 611a, the pressure relief inner end 611b is connected to the pressure relief elastic piece 62, and the pressure relief crown 612 is located at the pressure relief outer end 611 a. A relief crown 612 is threadably coupled to the opening of the relief passage 60 for restricting movement of the relief post 611. The pressure relief post 611 and/or the pressure relief crown 612 are capable of sealing engagement with the pressure relief channel 60, in this embodiment, the pressure relief crown 612 is in sealing engagement with the pressure relief channel 60 to seal the pressure relief post 611 within the pressure relief channel 60.

As shown in fig. 11, a first limiting portion 6111 is disposed at the edge of the pressure releasing inner end 611b, a second limiting portion 6011 is disposed on the inner wall of the pressure releasing channel 60, and the pressure releasing elastic member 62 is a pressure spring, sleeved on the pressure releasing column 611, and located between the first limiting portion 6111 and the second limiting portion 6011. When the pressure relief column 611 moves towards the outside of the vapor preventing cavity 30, the first limiting portion 6111 and the second limiting portion 6011 move close to each other, so that the elastic member compresses, and the elastic member can provide a force to the pressure relief column 611 towards the inside of the vapor preventing cavity 30. By means of the mutual matching of the first limiting part 6111, the second limiting part 6011 and the pressure relief elastic piece 62, the pressure relief device 6 can automatically recover to a sealing state after proper pressure relief, and the pressure relief column 611 can be prevented from being separated from the pressure relief channel 60.

In this embodiment, the relief post 611 is fixedly connected to the relief crown 612, which can be moved or positioned simultaneously. When the pressure relief crown 612 is screwed to the inlet of the pressure relief channel 60, the pressure relief crown 612 can limit the movement of the pressure relief post 611 in the pressure relief channel 60 and place the pressure relief piece 61 in a sealed state with the pressure relief channel 60. By means of the thread between the relief crown 612 and the inlet of the relief channel 60, the relief piece 61 can be moved in the relief channel 60 only by rotating the relief crown 612 under the action of an external force.

As shown in fig. 12, when the relief crown 612 is separated from the threads at the inlet of the relief channel 60, i.e., when the relief crown 612 is in the unscrewed state, the relief piece 61 as a whole can move within the relief channel 60 to open or seal the relief channel 60.

By using the pressure relief crown 612, the movement of the pressure relief column 611 can be limited, and when the pressure needs to be released, the pressure relief crown 612 can be rotated by a user to relieve the pressure, so that automatic pressure relief is avoided under the unnecessary condition.

More specifically, the pressure relief crown 612 includes a pressure relief plate 6121, a pressure relief ring 6122, and a central column 6123, the pressure relief ring 6122 is fixedly disposed along the periphery of the pressure relief plate 6121, the central column 6123 is coaxially disposed with the pressure relief ring 6122, the central column 6123 is located in the pressure relief ring 6122, and one end of the central column 6123 is fixedly connected with the pressure relief plate 6121. The other end of the central column 6123 is disposed opposite the pressure relief outer end 611 a.

The pressure relief ring 6122 is in threaded connection with the inlet of the pressure relief channel 60, and more specifically, the inner surface of the pressure relief ring 6122 is in threaded connection with the outer peripheral surface of the pressure relief retainer 633 of the pressure relief pipe 63, so as to facilitate the covering of the pressure relief column 611 in the pressure relief channel 60. A pressure relief collar 633 is located between the pressure relief tube 63 and the pressure relief ring 6122.

In this embodiment, the central column 6123 is sealingly connected to the pressure relief channel 60. By the sealing structure of the central column 6123 and the pressure relief channel 60, the sealing between the pressure relief piece 61 and the pressure relief channel 60 can be realized, and the pressure relief column 611 is further sealed in the pressure relief channel 60.

The inner wall of the pressure relief channel 60 is provided with a pressure relief ring groove 601, a pressure relief sealing ring 602 is arranged in the pressure relief ring groove 601, the pressure relief sealing ring 602 can be positioned on the inner wall of the pressure relief channel 60 through the pressure relief ring groove 601, and when the pressure relief piece 61 moves, the pressure relief sealing ring 602 cannot be driven to move. When the relief piece 61 is moved such that the relief seal 602 is connected to the outer wall of the central column 6123, a sealing connection of the relief crown 612 to the relief channel 60 is achieved, with the relief piece 61 in the sealed position.

As shown in fig. 11, when the relief piece 61 is in the sealing position, the relief crown 612 is sealed against the relief seal ring 602; as shown in fig. 12, when the relief piece 61 is moved to the relief position, the center post 6123 of the relief crown 612 is separated from the relief seal 602. Here, in other embodiments, the pressure relief sealing ring may also be disposed on an outer peripheral surface of the pressure relief retainer ring, so that the pressure relief sealing ring is located between the pressure relief retainer ring and the pressure relief ring, so as to achieve contact and separation between the pressure relief crown and the pressure relief sealing ring.

In this embodiment, by sealing the pressure relief crown 612 and the pressure relief channel 60, the pressure relief piece 61 and the pressure relief channel 60 can be sealed, so that the pressure relief elastic piece 62 and other structures can be sealed in the housing 2, and the situation that the pressure relief elastic piece 62 retains liquid and contacts with the outside air to cause corrosion is avoided. Here, in other embodiments, the sealing structure between the pressure relief piece 61 and the pressure relief channel 60 may also be provided between the pressure relief post 611 and the pressure relief channel 60, or both the pressure relief post 611 and the pressure relief crown 612 may be capable of sealing engagement with the pressure relief channel 60.

The central column 6123 is tubular, and the inner surface of the central column 6123 is in threaded connection with the pressure relief outer end 611a of the pressure relief column 611, and is always kept in a screwed state, so that the central column 6123 and the pressure relief tube 63 can be fixedly assembled. The end face of the pressure release inner end 611b of the pressure release column 611 is provided with a straight slot so as to screw the central column 6123 with the pressure release column 611 by using a straight screwdriver. Here, in other implementations, the central post 6123 and the pressure relief post 611 may also be fixedly connected by an interference fit. Through the cooperation of the center post 6123 and the pressure relief post 611, the pressure relief post 611 and the pressure relief crown 612 are connected into an integral part, so that the pressure relief crown 612 and the pressure relief post 611 can not be taken down from the watch 100 with the multilayer structure when the pressure relief operation is performed, and the falling and losing of the pressure relief crown 612 can be avoided when the pressure is relieved; when the pressure relief device 6 is in a sealed state, only one of the pressure relief post 611 and the pressure relief crown 612 needs to be sealed with the pressure relief channel 60, and the pressure relief post 611 and the pressure relief crown 612 do not need to be sealed with the pressure relief channel 60, so that the structure can be simplified, and the cost can be reduced. Of course, on the basis of the present embodiment, the pressure relief post 611 and the pressure relief crown 612 may be sealed.

When the pressure relief device 6 is in a sealed state, the central column 6123 of the pressure relief pipe 63 is connected with the pressure relief sealing ring 602 for sealing. When pressure relief is needed, the pressure relief crown 612 is unscrewed, and when the pressure relief crown 612 drives the pressure relief column 611 to move along the direction away from the vapor-proof cavity 30, the central column 6123 of the pressure relief crown 612 moves along the axial direction of the central column 6123 and leaves the position contacted with the pressure relief sealing ring 602, so that the central column 6123 is in dislocation fit with the pressure relief sealing ring 602, and the sealing is released, so that the pressure relief device 6 is in a releasing state. The vapor-proof cavity 30 is communicated with the outside through the gaps between the pressure release channel 60, the pressure release column 611 and the pressure release crown 612, and pressure release can be performed.

In the first embodiment, the injection cap 51 is removed first, then the injection plug 52 is removed, so that the liquid can be injected, and the injection cap 52 needs to be placed aside after being removed, so that the risk of dropping and losing is present.

As shown in fig. 13, in the multi-layer structure watch 100 with waterproof function provided in the second embodiment of the present invention, the inner wall of the inner ring 512 of the injection cap 51 is provided with the annular collar 5121, and the inner diameter of the annular collar 5121 is smaller than the outer diameter of the outer flange 522 of the injection plug 52, so that the outer flange 522 can be restrained between the annular collar 5121 and the outer cap 511 of the injection cap 51, so that the injection plug 52 is not completely separated from the injection cap 51, thereby avoiding the loss of the injection plug 52.

The outer flange 522 is movably disposed in the injection cap 51 in the axial direction of the injection plug 52. When the injection device 5 is in a sealed state, the outer flange 522 abuts against the outer cover 511, and a gap is formed between the outer flange 522 and the annular retainer 5121. When the injection cap 51 is unscrewed such that the injection cap 51 is separated from the housing 2, the outer flange 522 can abut the annular collar 5121 and then the injection cap 51 is pulled outwardly to remove the injection plug 52 from the injection channel 50.

Further, the annular collar 5121 may be provided with serration grooves (not shown) which are engaged with the circumferential surface of the outer flange 522, and when the outer flange 522 abuts against the annular collar 5121, the outer flange 522 is positioned in the serration grooves, and when the outer flange 522 is rotated by engagement of the serration circumferential surface of the outer flange 522 with the serration grooves, the injection plug 52 is rotated so as to facilitate extraction of the injection plug 52.

In the first and second embodiments described above, the liquid is injected into the vapor-proof chamber 30 after the injection plug 52 is completely pulled out. Here, in other embodiments, the injection plug 52 may be provided with an injection flow passage, and when half of the injection plug 52 is pulled out, the liquid may be injected into the water vapor preventing cavity 30 through the injection flow passage, which is specifically described below.

As shown in fig. 14 and 15, in the multi-layer watch 100 with waterproof function provided in the third embodiment of the present invention, two sealing rings, namely, a first injection sealing ring 541 and a second injection sealing ring 542, are disposed on the injection plug 52, the first injection sealing ring 541 and the second injection sealing ring 542 are arranged along the axial direction of the injection plug 52, and the first injection sealing ring 541 is close to the waterproof cavity 30 in the multi-layer watch 100 relative to the second injection sealing ring 542. The injection plug 52 is provided with an injection flow passage 520.

The injection flow path 520 has an injection inlet 520a and an injection outlet 520b opposite to each other, the injection outlet 520b being located at an end face of the sealing end 52a of the injection plug 52, the injection inlet 520a being located at a peripheral face of the injection plug 52 and between the first injection seal 541 and the second injection seal 542.

As shown in fig. 14, when the injection passage 50 and the injection plug 52 are in a sealed state, the first injection seal 541, the second injection seal 542, and the injection inlet 520a are all located in the injection passage 50, and the injection passage 50 is sealed by the first injection seal 541 and the second injection seal 542.

When the injection is required, as shown in fig. 15, the injection plug 52 is moved outwards, the injection channel 50 and the injection plug 52 are in an open state, at this time, the second injection sealing ring 542 and the injection inlet 520a of the injection runner 520 are located outside the injection channel 50, that is, the second injection sealing ring 542 and the injection inlet 520a of the injection runner 520 are exposed outside the multi-layer wristwatch 100, the injection runner 520 is inserted into the needle tube through the injection inlet 520a of the injection runner 520, and the liquid enters the vapor preventing cavity 30 through the injection runner 520 via the injection outlet 520b, so that the injection operation of the liquid can be performed without completely pulling out the injection plug 52, thereby avoiding the loss of the injection plug 52.

Further, the injection channel 50 may be provided with a limiting ring groove 501, and when the injection plug 52 moves to the outside of the multi-layer wristwatch 100 so that the first injection sealing ring 541 is located in the limiting ring groove 501, the second injection sealing ring 542 and the injection inlet 520a of the injection runner 520 are located outside the injection channel 50. By using the limiting ring groove 501, the user can sense that the injection plug 52 has moved to a position where the injection operation can be performed, thereby avoiding the injection plug 52 from being completely pulled out.

The watch 100 of a multilayer structure provided by the fourth embodiment of the present invention is a further improvement over the previous embodiments. As shown in fig. 16, a receiving groove 301 for receiving gas is provided on a chamber side wall of the moisture preventing chamber 30, and the receiving groove 301 is located at the top of the moisture preventing chamber 30. Here, it is understood that the top of the vapor proof cavity 30 refers to the end of the vapor proof cavity 30 near the front of the watch, i.e., the watch scope.

By utilizing the accommodating groove 301 at the top, when the liquid in the vapor preventing cavity 30 is not full, the gas in the vapor preventing cavity 30 can automatically enter the accommodating groove 301 at the top of the vapor preventing cavity 30, so that the shielding of the time display caused by the gas in the vapor preventing cavity 30 is avoided.

In this embodiment, the accommodation groove 301 is annular provided along the circumference of the wristwatch so as to accommodate a part of the gas all around. The receiving groove 301 is provided on the outer middle frame 22 to facilitate the processing and preparation.

Further, the inner surface 21a of the outer mirror 21 is close to the inner case 1 with respect to the top surface 301a of the accommodation groove 301, so that the gas in the moisture preventing chamber 30 can enter the accommodation groove 301 better, and the contact with the inner surface 21a of the outer mirror 21 is avoided to affect the time display. The top surface 301a of the accommodation groove 301 is recessed upward to further allow the gas to be better accommodated in the accommodation groove 301.

In the multilayer-structured wristwatch 100 with a waterproof function provided in the fifth embodiment of the present invention, the structure of the pressure relief device 6 is different from that of the previous embodiment. As shown in fig. 17 and 18, in the pressure relief device 6, the pressure relief member 61 includes a pressure relief post 611 and a pressure relief crown 612, and the pressure relief post 611 and the pressure relief crown 612 are two separate components that can be separated, i.e. they are not connected as a whole. The pressure relief column 611 and the pressure relief tube 63 may each be provided with a seal with the pressure relief channel 60, or one of them may be provided with a seal with the pressure relief channel 60.

In contrast to the foregoing embodiments, the pressure relief crown 612 in this embodiment is different from the pressure relief crown 611 only in the fitting structure between the center post 6123 and the pressure relief post 611, and the same structure is not repeated.

More specifically, a first sealing ring 661 is disposed between the central column 6123 of the pressure relief crown 612 and the pressure relief channel 60, and a second sealing ring 662 is disposed between the first limiting portion 6111 of the pressure relief column 611 and the pressure relief channel 60. In this embodiment, the first sealing ring 661 and the second sealing ring 662 are both positioned on the inner wall of the pressure relief channel 60, and when the pressure relief piece 61, i.e. the pressure relief post 611 and the pressure relief crown 612, move along the pressure relief channel 60, the pressure relief piece can contact or be in clearance fit with the second sealing ring 662 and the first sealing ring 661, thereby realizing the transition between the sealed state and the open state. Here, depending on the structure of the pressure relief crown 612 and the pressure relief post 611, the first seal ring 661 and the second seal ring 662 of the seal structure may be provided at other portions of the pressure relief crown 612 and the pressure relief post 611.

In this embodiment, as shown in fig. 17, when the pressure relief device 6 is in a sealed state, the pressure relief crown 612 is screwed at the opening of the pressure relief channel 60, the peripheral surface of the central column 6123 of the pressure relief crown 612 is in contact fit with the first sealing ring 661, and the pressure relief column 611 is in contact with the second sealing ring 662, so that the pressure relief piece 61 and the pressure relief channel 60 are in a sealed fit state. And the pressure relief crown 612 is blocked at the pressure relief outer end 611a of the pressure relief post 611 to limit the movement of the pressure relief post 611 such that both the pressure relief post 611 and the pressure relief crown 612 are locked in a sealed state with the pressure relief channel 60.

As shown in fig. 18, when the pressure relief crown 612 is unscrewed, the pressure relief crown 612 moves towards the outside of the multi-layer watch 100, and the pressure relief crown 612 and the first seal ring 661 are dislocated, so that the pressure relief crown 612 and the pressure relief channel 60 are in clearance fit, and a gap is formed between the pressure relief crown 612 and the pressure relief post 611. If the pressure in the vapor-proof cavity 30 is too high, the pressure relief column 611 is pushed to move outwards, after the pressure relief column 611 moves a certain distance, the pressure relief column 611 staggers the position of the second sealing ring 662, and the two are in clearance fit, so that the seal between the pressure relief column 611 and the pressure relief channel 60 is opened, and pressure relief can be performed. When the pressure is reduced to a certain extent, the pressure relief column 611 moves towards the vapor proof cavity 30 under the action of the pressure relief elastic piece 62, and the pressure relief column 611 contacts with the second sealing ring 662, so that the pressure relief column 611 and the pressure relief channel are in a sealed state, and pressure relief is stopped.

In this embodiment, the pressure relief post 611 and the pressure relief crown 612 are two separate components that can be separated, and when the pressure relief crown 612 rotates, the pressure relief post 611 is not driven to rotate, so as to avoid affecting the elastic structure; when the pressure relief column 611 moves along the pressure relief channel 60, the pressure relief column 611 does not drive the pressure relief crown 612 to move, so as to ensure flexibility of movement of the pressure relief column 611, and enable the pressure relief column 611 to relieve pressure in time.

As shown in fig. 19 and 20, in the watch 100 with a multi-layer structure according to the sixth embodiment of the present invention, the first sealing ring 661 is disposed on the side of the second limiting portion 6011 near the pressure relief crown 612, and the inner diameter of the first sealing ring 661 is larger than the outer diameter of the pressure relief outer end 611a of the pressure relief column 611, so that the first sealing ring 661 and the pressure relief outer end 611a always keep a clearance fit. As shown in fig. 19, when the pressure relief device 6 is in a sealed state, the first seal ring 661 is compressed between the second limit portion 6011 and the inner end of the center post 6123, so that the pressure relief crown 612 is in a sealed state with the pressure relief channel 60. When pressure relief is needed, the pressure relief crown 612 is unscrewed, as shown in fig. 20, so that the center column 6123 is separated from the first sealing ring 661, and the pressure relief crown 612 and the pressure relief channel 60 are in an open state, and when the pressure in the water vapor prevention cavity 30 is greater than the elastic force of the pressure relief elastic piece 62, the pressure relief column 611 moves to relieve pressure.

In the watch 100 with a multi-layer structure having a waterproof function provided in the fifth and sixth embodiments of the present invention, the central column 6123 of the pressure relief crown 612 is connected with the pressure relief channel 60 in a sealing manner through the first sealing ring 661, where a sealing structure may be provided at other positions of the pressure relief crown 612 to seal the pressure relief channel 60. For example, a sealing structure is provided between the inner wall of the pressure relief ring 6122 of the pressure relief crown 612 and the outer wall of the pressure relief pipe 63, or a sealing structure is provided between the end surface of the pressure relief ring 6122 and the outer wall of the outer middle frame 22.

In the pressure relief device 6 of the foregoing embodiment, the exhaust and pressure relief are performed through the gap between the pressure relief passage 60 and the pressure relief member 61, so as to achieve relatively gentle pressure relief while avoiding a large amount of liquid flowing out. In the watch 100 of the multilayer structure provided in the seventh embodiment of the present invention, the difference from the previous embodiment mainly resides in the pressure relief device 6. As shown in fig. 21 and 22, the pressure relief post 611 and the pressure relief crown 612 of the pressure relief device 6 are two separate components that can be separated, a through pressure relief straight channel 610 is axially arranged on the pressure relief post 611, a sealing plug 64 is arranged at a pressure relief outer end 611a of the pressure relief post 611, the sealing plug 64 comprises a sealing post 641 and a sealing edge 642 which are integrally formed, the sealing post 641 is spliced and sealed in the pressure relief straight channel 610, the sealing edge 642 is abutted to the pressure relief outer end 611a and abutted to a second limiting part 6011, and when the pressure relief device 6 is in a sealed state, the sealing edge 642 is tightly pressed between the pressure relief crown 612 and the second limiting part 6011, so that the sealing connection between the pressure relief piece 61 and the pressure relief channel 60 is realized.

The outer circumference of the sealing edge 642 is in clearance fit with the inner wall of the pressure relief channel 60, and pressure relief can be performed by the clearance between the outer circumference of the sealing edge 642 and the inner wall of the pressure relief channel 60. When pressure relief is needed, the pressure relief crown 612 is unscrewed, if the pressure in the vapor-proof cavity 30 is too high, the pressure relief column 611 is pushed to move towards the pressure relief crown 612, the pressure relief column 611 drives the sealing plug 64 to move, the sealing edge 642 of the sealing plug 64 is separated from the second limiting portion 6011, so that the pressure relief channel 60 is in an open state, and pressure relief is performed by utilizing a gap between the sealing plug 64 and the inner wall of the pressure relief channel 60.

After the pressure relief crown 612 is opened, the sealing plug 64 is pulled out, and pressure relief can be quickly performed by using the pressure relief straight channel 610. Meanwhile, the pressure release straight channel 610 can be used for injecting liquid into the vapor-proof cavity 30, and the injection device 5 is not required to be arranged on the watch 100 with the multilayer structure.

In order to facilitate the removal of the sealing plug 64, as shown in fig. 23, in the multi-layer watch 100 with a waterproof function according to the eighth embodiment of the present invention, a pull ring 643 is further provided on the sealing plug 64, a sealing rim 642 is located between the pull ring 643 and the sealing post 641, and a void-avoiding groove 6120 is provided on the pressure relief crown 612 corresponding to the pull ring 643. When the pressure relief crown 612 is removed, the tab 643 may be exposed, and the sealing plug 64 may be conveniently removed by the tab 643.

In the above embodiment, the multi-layer watch 100 is provided with the injection device 5 and the pressure relief device 6, and the injection device 5 and the pressure relief device 6 can be respectively arranged at the 10-shaped position and the 8-shaped position, so that the appearance of the whole multi-layer watch 100 can be balanced without being abrupt. In other embodiments, only the injection means 5 may be provided. For example, in the first embodiment, only the injection device 5 is provided, and when pressure relief is required, pressure relief can be achieved by opening the injection plug 52, or in the second embodiment, pressure relief can be achieved by exposing the injection inlet 520a of the injection flow passage 520. As another embodiment, the injection device 5 and the pressure release device 6 may not be provided on the multilayer structure wristwatch 100, and the liquid may be injected into the water vapor preventing cavity 30 before the multilayer structure wristwatch 100 is sealed and assembled, and then the multilayer structure wristwatch 100 may be sealed and assembled. The pressure relief device 6 is not required when the waterproof performance and the compression resistance of the multilayer wristwatch 100 are good.

In the above embodiment, the inner case 1 and the outer case 2 of the multi-layer structure wristwatch 100 having the waterproof function are independently detachable members, and as another embodiment, part of the members between the inner case 1 and the outer case 2 may be integrated. For example, the inner mirror 11 of the inner case 1 and the outer mirror 21 of the outer case 2 are integrally formed, so that shielding of gas in the time display area can be avoided, the inner bottom cover 13 of the inner case 1 and the outer bottom cover 23 of the outer case 2 can be integrally formed, and the moisture preventing cavity 30 and the inner case 1 can be sealed together during assembly.

In the above embodiment, the supporting member is rod-shaped and is connected between the inner middle frame and the outer middle frame, and in other embodiments, the supporting member may also be plate-shaped and be disposed between the inner mirror and the outer mirror, and between the inner bottom shell and the outer bottom shell, so that connection between the inner shell and the outer shell can be achieved.

In summary, although the present invention has been described in terms of the preferred embodiments, the above-mentioned embodiments are not intended to limit the invention, and those skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention, so that the scope of the invention is defined by the appended claims.

Claims (10)

1. The multi-layer structure watch capable of avoiding gas shielding is characterized in that a sealing cavity, a first heavy sealing structure, a water vapor preventing cavity and a second heavy sealing structure are sequentially arranged from inside to outside; the seal cavity is sealed within the first resealing structure; the waterproof vapor cavity is filled with liquid capable of fusing water vapor, and is sealed between the first heavy sealing structure and the second heavy sealing structure; the waterproof steam chamber is characterized in that the chamber side wall of the waterproof steam chamber is provided with an accommodating groove for accommodating gas, and the accommodating groove is positioned at the top of the waterproof steam chamber.

2. The gas shielding-avoiding multilayer structure wristwatch of claim 1, wherein the receiving groove is ring-shaped provided along a circumferential direction of the multilayer structure wristwatch.

3. The gas shielding avoiding multilayer structure wristwatch of claim 1 or 2, wherein the multilayer structure wristwatch comprises an inner case and an outer case; the seal cavity is formed in the inner shell, and the inner shell is arranged in the outer shell; the first resealing structure is arranged on the inner shell and seals the sealing cavity in the inner shell; the second heavy sealing structure is arranged on the outer shell and seals the inner shell in the outer shell, and the waterproof steam cavity is positioned between the inner shell and the outer shell;

the second heavy sealing structure comprises a second top sealing ring and a second bottom sealing ring, the outer shell comprises an outer mirror, an outer middle frame and an outer bottom cover, the outer mirror is in sealing connection with the outer middle frame through the second top sealing ring, the outer bottom cover is in sealing connection with the outer middle frame through the second bottom sealing ring, and the inner shell is sealed in a closed space formed by the outer mirror, the second top sealing ring, the outer middle frame, the second bottom sealing ring and the outer bottom cover in a surrounding mode; the accommodating groove is arranged on the outer middle frame.

4. A gas shielding avoiding multilayer structure wristwatch according to claim 3, wherein the inner surface of the outer mirror is close to the inner case with respect to the top surface of the receiving groove.

5. The gas shielding-avoiding multilayer structure wristwatch of claim 3, wherein the first resealing structure comprises a first top sealing ring and a first bottom sealing ring, the inner case comprises an inner mirror, an inner middle frame and an inner bottom cover, the inner mirror and the inner middle frame are in sealing connection through the first top sealing ring, the inner bottom cover and the inner middle frame are in sealing connection through the first bottom sealing ring, and the inner mirror, the first top sealing ring, the inner middle frame, the first bottom sealing ring and the inner bottom cover enclose to form the sealing cavity.

6. The gas shielding avoiding multilayer structure wristwatch of claim 5, wherein the inner mirror is integrally formed with the outer mirror.

7. The gas shielding avoiding multilayer structure wristwatch of claim 5, wherein the inner bottom cover is integrally formed with the outer bottom cover of the case.

8. The gas shielding avoiding multilayer structure wristwatch of claim 5, wherein the inner case is suspended in the outer case.

9. The gas shielding avoiding multilayer structure wristwatch of claim 8, wherein a support is connected between the inner case and the outer case.

10. The gas shielding-avoiding multilayer structure wristwatch of claim 5, wherein the support is fixedly connected between the inner case and the outer case so that the relative positions of the inner case and the outer case are fixed; or,

the support member is rotatably connected between the inner shell and the outer shell so that the inner shell and the outer shell can rotate relatively.