Breathable membrane assembly
By using a combined structure of a waterproof mesh and a waterproof breathable membrane in the breathable membrane assembly, it provides mechanical protection and hierarchical interception functions, and solves the problem of easy breakage of waterproof breathable membranes in the prior art, extends the service life and improves the waterproof and dustproof level , ensuring the stability of electronic products.
Patent Information
- Application Number
- CN202420627154.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing double-layer waterproof and breathable membrane structure is easily damaged after being impacted by external impact, resulting in a decrease in waterproofness, which cannot be used normally, and cannot effectively balance the pressure inside and outside the sealing shell, affecting the working stability of electronic products.
A breathable membrane assembly is designed, including the main body and the breathable membrane member. The breathable membrane member consists of a waterproof mesh, a waterproof breathable membrane and a waterproof adhesive layer. The waterproof and dust-proof level of the waterproof and breathable membrane is higher than that of the waterproof mesh, and both the outside and the inside are arranged. Waterproof mesh and adhesive layer, providing mechanical protection and hierarchical interception functions, embedded in the grooves and protective grooves of the body, enhance connection stability.
The service life of the waterproof and breathable membrane is extended, the waterproof and dustproof level of the breathable membrane members is improved, the interception ability of liquid droplets and solid particles is ensured, the cost of the waterproof net is reduced, and the air circulation effect is improved.
Smart Images
Figure CN222160057U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of breathable membranes, and more specifically, to a breathable membrane component. Background Art
[0002] With the development of technology, the integration of electronic and electrical products and control systems such as mobile phones, telephone watches, small household appliances, automotive lamps, sensors, etc. is becoming higher and higher, requiring more and more functions and higher and higher precision. In order to ensure the long-term stability and reliability of electronic products, instruments and equipment, and control systems, it is necessary to seal the outer shell (box) to achieve waterproof and dustproof effects. Since electronic products will generate heat during use, and when the external temperature rises, the gas pressure inside the sealed shell will increase and produce positive pressure; when the external environment cools down (such as at night or when it rains) or when it is shut down, negative pressure will be generated in the sealed shell. If the pressure inside and outside the sealed shell cannot be quickly balanced, it may affect the working stability of the internal electrical components, and when the gas pressure difference exceeds the limit that the sealing structure can withstand, it will cause the structural seal to fail, and then cause waterproof failure. In order to solve the above problems, a small hole is generally set on the shell, and then a waterproof and breathable membrane is installed to cover the small hole to achieve the effect of waterproof and breathable.
[0003] For example, Chinese patent CN215886897U provides a double-layer waterproof and breathable membrane structure, which includes a first waterproof membrane, a second waterproof membrane and a supporting layer from the outside to the inside. A middle rubber ring is provided between the first waterproof membrane and the second waterproof membrane, and an inner rubber ring is provided between the second waterproof membrane and the supporting layer. The through holes in the middle of the second waterproof membrane, the supporting layer and the inner rubber ring form a buffer gap.
[0004] When the double-layer waterproof and breathable membrane structure is in use, the waterproof membrane is easily damaged after being impacted by the outside world, resulting in a significant decrease in its waterproofness and inability to be used normally. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model aims to provide a breathable membrane assembly, which comprises a main body and a breathable membrane component, wherein the main body is provided with a through hole, and the breathable membrane component is fixedly connected to the main body and covers the through hole; the breathable membrane component comprises a waterproof mesh, a waterproof breathable membrane and a waterproof adhesive layer, the waterproof and dustproof level of the waterproof breathable membrane is higher than the waterproof and dustproof level of the waterproof mesh, and a breathable channel is provided on the waterproof adhesive layer; a waterproof mesh is arranged on the outer side of the waterproof breathable membrane, a waterproof adhesive layer is arranged between the waterproof mesh on the outer side of the waterproof breathable membrane and the waterproof breathable membrane, and a waterproof adhesive layer is arranged on the inner side of the waterproof breathable membrane.
[0006] The utility model is further configured as follows: in the breathable membrane component, a waterproof net is also arranged inside the waterproof breathable membrane, a waterproof adhesive layer is arranged between the waterproof net inside the waterproof breathable membrane and the waterproof breathable membrane, and a waterproof adhesive layer is arranged inside the waterproof net inside the waterproof breathable membrane.
[0007] The utility model is further configured as follows: the air-permeable membrane component is fixed on the outside of the main body.
[0008] The utility model is further configured as follows: a groove is opened on the outer side of the main body, the breathable membrane component is embedded in the groove, and the wall of the groove close to the through hole is located on the inner side of the breathable membrane component.
[0009] The utility model is further configured as follows: a protection groove is also provided on the outer side of the main body, and the breathable membrane component is immersed in the protection groove.
[0010] The utility model is further configured as follows: the waterproof breathable membrane is a polytetrafluoroethylene membrane with air holes, a polycarbonate membrane with air holes, or a polyethylene terephthalate membrane with air holes.
[0011] The utility model is further configured as follows: the waterproof and breathable membrane is a polytetrafluoroethylene track etching membrane.
[0012] The utility model is further configured as follows: the waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane.
[0013] The utility model is further configured as follows: the waterproof adhesive layer is annular, the air permeable channel is a hollow area in the middle of the waterproof adhesive layer, and the outer edge of the waterproof adhesive layer is aligned with the edges of the waterproof net and the waterproof breathable membrane.
[0014] The utility model is further configured as follows: the waterproof net is a flat plate with meshes.
[0015] The utility model is further configured as follows: the mesh is square or circular.
[0016] The utility model is further configured as follows: the waterproof net is a steel net or a plastic net.
[0017] The utility model is further configured as follows: the waterproof adhesive layer is a waterproof double-sided adhesive layer or a hot melt adhesive layer or an ultrasonic welding layer.
[0018] In summary, compared with the prior art, the utility model has the following beneficial effects: the utility model sets a layer of waterproof net on the outside of the waterproof breathable membrane, provides a layer of mechanical protection for the waterproof breathable membrane, and prolongs the service life of the waterproof breathable membrane. At the same time, the waterproof net also has a certain waterproof and dustproof function, which greatly improves the waterproof and dustproof level of the breathable membrane component. At the same time, since the waterproof and dustproof level of the waterproof breathable membrane is higher than that of the waterproof net, the waterproof net and the waterproof breathable membrane can intercept droplets and solid particles in a graded manner, prolonging the service life of the waterproof net and the waterproof breathable membrane. In addition, the processing accuracy of the waterproof net is lower than that of the waterproof breathable membrane, which reduces the cost of the waterproof net to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of Example 1;
[0020] Figure 2 It is an explosion diagram of Example 1;
[0021] Figure 3 Schematic diagram of the explosion of the breathable membrane component in Example 1;
[0022] Figure 4 is a cross-sectional view of the breathable membrane component in Example 1;
[0023] Figure 5 is a front view of the breathable membrane component in Example 1;
[0024] Figure 6 Schematic diagram of explosion of the breathable membrane component in Example 2;
[0025] Figure 7 is a front view of the breathable membrane component in Example 2;
[0026] Figure 8 Schematic diagram of explosion of the breathable membrane component in Example 3;
[0027] Fig. 9 is a cross-sectional view of the breathable membrane component in Example 3;
[0028] Fig.10 Schematic diagram of the explosion of the breathable membrane component in Example 4.
[0029] In the figure: 1, breathable membrane component; 11, waterproof net; 111, square hole; 112, round hole; 12, waterproof breathable membrane; 13, waterproof adhesive layer; 2, main body; 21, through hole; 22, groove; 23, protective groove; 24, inclined surface. DETAILED DESCRIPTION
[0030] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0031] It should be noted that the terms "center", "up", "down", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0032] Example 1
[0033] like Figure 1-5 As shown, it is a preferred embodiment of the utility model. This embodiment provides a breathable membrane assembly, which includes a main body 2 and a breathable membrane component 1. The main body 2 is provided with a through hole 21. The breathable membrane component 1 is fixedly connected to the main body 2 and covers the through hole 21. The breathable membrane component 1 includes a waterproof net 11, a waterproof breathable membrane 12 and a waterproof adhesive layer 13. The waterproof principle of the waterproof net 11 is the surface tension of the liquid and the attraction between liquid molecules. The waterproof and dustproof level of the waterproof breathable membrane 12 is higher than that of the waterproof net 11. The waterproof adhesive layer 13 is provided with a breathable channel. A waterproof net 11 is arranged outside the waterproof breathable membrane 12, and a waterproof adhesive layer 13 is arranged between the waterproof net 11 outside the waterproof breathable membrane 12 and the waterproof breathable membrane 12, and a waterproof adhesive layer 13 is arranged inside the waterproof breathable membrane 12. The outer side referred to in this embodiment is the side that is most likely to contact with droplets and solid particles, and the inner side referred to in this embodiment is the side that is least likely to contact with droplets and solid particles.
[0034] In this embodiment, a layer of waterproof net 11 is arranged on the outside of the waterproof breathable membrane 12, which provides a layer of mechanical protection for the waterproof breathable membrane 12, prolongs the service life of the waterproof breathable membrane 12, and the waterproof net 11 also has a certain waterproof and dustproof function, which greatly improves the waterproof and dustproof level of the breathable membrane component 1. At the same time, since the waterproof and dustproof level of the waterproof breathable membrane 12 is higher than the waterproof and dustproof level of the waterproof net 11, the waterproof net 11 and the waterproof breathable membrane 12 can intercept droplets and solid particles in a graded manner, prolonging the service life of the waterproof net 11 and the waterproof breathable membrane 12. In addition, the processing accuracy of the waterproof net 11 is lower than that of the waterproof breathable membrane 12, which reduces the cost of the waterproof net 11 to a certain extent.
[0035] Specifically, the breathable membrane component 1 is fixed on the outside of the main body 2 to prevent solid particles and liquid droplets intercepted by the breathable membrane component 1 from staying on the outside of the breathable membrane component 1 and affecting the air circulation effect.
[0036] Specifically, a groove 22 is provided on the outside of the main body 2, and the breathable membrane member 1 is embedded in the groove 22. The wall of the groove 22 close to the through hole 21 is located on the inner side of the breathable membrane member 1. The groove wall of the groove 22 is in surface contact with the breathable membrane member 1, which increases the friction between the breathable membrane member 1 and the main body 2, making the connection between the breathable membrane member 1 and the main body 2 more secure.
[0037] Specifically, a protection groove 23 is further provided on the outer side of the main body 2 , and the breathable membrane component 1 is immersed in the protection groove 23 to reduce the possibility of the outer side of the breathable membrane component 1 being worn.
[0038] Specifically, the side wall of the protection groove 23 is a slope 24 , and the outer side of the slope 24 is inclined in a direction away from the breathable membrane component 1 to guide the liquid droplets and solid particles entering the protection groove 23 to leave the protection groove 23 .
[0039] Specifically, the waterproof breathable membrane 12 is an expanded polytetrafluoroethylene membrane, which has good air permeability. On the basis of ordinary polytetrafluoroethylene membrane, it has good corrosion resistance, high temperature resistance, and low temperature resistance, and can adapt to a variety of extreme working conditions. At the same time, the expanded polytetrafluoroethylene membrane also has good resilience and extremely low friction coefficient, which can effectively reduce the wear of solid particles on it, so that it has a longer service life.
[0040] It should be noted that the waterproof breathable membrane 12 can be replaced by an expanded polytetrafluoroethylene membrane with micro-permeable pores, and the pores on the polytetrafluoroethylene membrane are preferably processed by a sintering process, that is, the polytetrafluoroethylene membrane is preferably a polytetrafluoroethylene sintered membrane. The waterproof breathable membrane 12 can also be a polycarbonate membrane with micro-permeable pores or a polyethylene terephthalate membrane with micro-permeable pores, and the pores on the polycarbonate membrane and the polyethylene terephthalate membrane are preferably processed by a track etching process, that is, the polycarbonate membrane is preferably a polycarbonate track etching membrane, and the polyethylene terephthalate membrane is preferably a polyethylene terephthalate track etching membrane.
[0041] Specifically, the waterproof adhesive layer 13 is annular, the air permeable channel is a hollow area in the middle of the waterproof adhesive layer 13 , and the outer edge of the waterproof adhesive layer 13 is aligned with the edges of the waterproof net 11 and the waterproof breathable membrane 12 .
[0042] Specifically, the waterproof net 11 is a flat plate with meshes. In this embodiment, the meshes of the waterproof net 11 are round holes 112 .
[0043] Specifically, the diameter of the mesh is 1000 μm-100 μm, and in this embodiment, the diameter of the mesh is 150 μm.
[0044] Specifically, the waterproof net 11 is a steel net or a plastic net, and the plastic net is preferably a PC net or a PET net.
[0045] Specifically, the waterproof adhesive layer 13 is a waterproof double-sided adhesive layer or a hot melt adhesive layer or an ultrasonic welding layer. In this embodiment, the waterproof adhesive layer 13 is a waterproof double-sided adhesive layer.
[0046] The breathable membrane component in this embodiment can pass reliability tests such as IP6K9K, AATCC 118-2007, GB / T 19977-2014, and Salt fog test (ASTM B117-11).
[0047] In summary, in this embodiment, a layer of waterproof net 11 is arranged on the outside of the waterproof breathable membrane 12, which provides a layer of mechanical protection for the waterproof breathable membrane 12, prolongs the service life of the waterproof breathable membrane 12, and the waterproof net 11 also has a certain waterproof and dustproof function, which greatly improves the waterproof and dustproof level of the breathable membrane component 1. At the same time, since the waterproof and dustproof level of the waterproof breathable membrane 12 is higher than that of the waterproof net 11, the waterproof net 11 and the waterproof breathable membrane 12 can intercept droplets and solid particles in a graded manner, prolonging the service life of the waterproof net 11 and the waterproof breathable membrane 12. In addition, the processing accuracy of the waterproof net 11 is lower than that of the waterproof breathable membrane 12, which reduces the cost of the waterproof net 11 to a certain extent.
[0048] Example 2
[0049] like Figure 6-7 As shown, the difference between this embodiment and embodiment 1 is that the mesh of the waterproof net 11 is a square hole 111. The side length of the mesh is 1000 μm-100 μm, and the side length of the mesh in this embodiment is 150 μm.
[0050] Example 3
[0051] like Figure 8-9 As shown, the difference between this embodiment and embodiment 1 is that: specifically, in the breathable membrane component 1, a waterproof net 11 is also arranged on the inner side of the waterproof breathable membrane 12, a waterproof adhesive layer 13 is arranged between the waterproof net 11 on the inner side of the waterproof breathable membrane 12 and the waterproof breathable membrane 12, and a waterproof adhesive layer 13 is arranged on the inner side of the waterproof net 11 on the inner side of the waterproof breathable membrane 12.
[0052] Example 4
[0053] like Fig.10As shown, the difference between this embodiment and embodiment 3 is that: in this embodiment, the mesh of the waterproof net 11 is square holes 111.
[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A breathable membrane assembly, characterized in that: The invention comprises a main body (2) and a breathable membrane component (1), wherein the main body (2) is provided with a through hole (21), and the breathable membrane component (1) is fixedly connected to the main body (2) and covers the through hole (21); the breathable membrane component (1) comprises a waterproof net (11), a waterproof breathable membrane (12) and a waterproof adhesive layer (13), the waterproof and dustproof level of the waterproof breathable membrane (12) is higher than the waterproof and dustproof level of the waterproof net (11), and a breathable channel is provided on the waterproof adhesive layer (13); a waterproof net (11) is arranged outside the waterproof breathable membrane (12), a waterproof adhesive layer (13) is arranged between the waterproof net (11) outside the waterproof breathable membrane (12) and the waterproof breathable membrane (12), and a waterproof adhesive layer (13) is arranged inside the waterproof breathable membrane (12).
2. The breathable membrane assembly according to claim 1, characterized in that: In the breathable membrane component (1), a waterproof net (11) is also arranged on the inner side of the waterproof breathable membrane (12), a waterproof adhesive layer (13) is arranged between the waterproof net (11) on the inner side of the waterproof breathable membrane (12) and the waterproof breathable membrane (12), and a waterproof adhesive layer (13) is arranged on the inner side of the waterproof net (11) on the inner side of the waterproof breathable membrane (12).
3. The breathable membrane assembly according to claim 1 or 2, characterized in that: The air-permeable membrane component (1) is fixed on the outside of the main body (2).
4. The breathable membrane assembly according to claim 3, characterized in that: A groove (22) is provided on the outside of the main body (2), the breathable membrane component (1) is embedded in the groove (22), and the wall of the groove (22) close to the through hole (21) is located on the inner side of the breathable membrane component (1).
5. The breathable membrane assembly according to claim 3, characterized in that: A protective groove (23) is also provided on the outer side of the main body (2), and the air-permeable membrane component (1) is immersed in the protective groove (23).
6. The breathable membrane assembly according to claim 1 or 2, characterized in that: The waterproof breathable membrane (12) is a polytetrafluoroethylene membrane with air permeability holes, a polycarbonate membrane with air permeability holes, or a polyethylene terephthalate membrane with air permeability holes.
7. The breathable membrane assembly according to claim 1 or 2, characterized in that: The waterproof and breathable membrane (12) is an expanded polytetrafluoroethylene membrane.
8. The breathable membrane assembly according to claim 1 or 2, characterized in that: The waterproof adhesive layer (13) is annular, the air permeable channel is a hollow area in the middle of the waterproof adhesive layer (13), and the outer edge of the waterproof adhesive layer (13) is aligned with the edges of the waterproof net (11) and the waterproof breathable membrane (12).
9. The breathable membrane assembly according to claim 1 or 2, characterized in that: The waterproof net (11) is a flat plate with meshes.
10. The breathable membrane assembly according to claim 1 or 2, characterized in that: The waterproof adhesive layer (13) is a waterproof double-sided adhesive layer or a hot-melt adhesive layer or an ultrasonic welding layer.