Breathable membrane member
By setting up a waterproof net and a high-level waterproof and breathable membrane in the breathable membrane component and setting a breathable channel between the two, the problem of easy breakage of the existing breathable membrane is solved, extending the service life and improving the waterproof and dustproof level. Ensures structural stability and cost-effectiveness.
Patent Information
- Application Number
- CN202420627181.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing double-layer waterproof and breathable membrane structure is easily damaged after 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 stability of electrical components.
A breathable membrane component is designed, including a waterproof mesh and a waterproof breathable membrane. The waterproof and dustproof grade of the waterproof breathable membrane is higher than that of the waterproof mesh. Waterproof adhesive layers are respectively set on the outside and inside to provide mechanical protection and improve waterproof dustproof grade and waterproof The adhesive layer between the mesh and the breathable membrane is provided with a breathable passage to achieve gas balance.
It extends the service life of the waterproof and breathable membrane, improves the waterproof and dustproof level, can effectively intercept droplets and solid particles, reduces costs, and supports low-precision waterproof mesh through a breathable membrane with high processing accuracy, ensuring structural stability .
Smart Images
Figure CN222250554U_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 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 purpose of the utility model is to provide a breathable membrane component, which includes a waterproof net, a waterproof breathable membrane and a waterproof adhesive layer. The waterproof and dustproof level of the waterproof and breathable membrane is higher than that of the waterproof net, and a ventilation channel is opened on the waterproof adhesive layer; a waterproof net is arranged on the outside of the waterproof and breathable membrane, a waterproof adhesive layer is arranged between the waterproof net on the outside of the waterproof and breathable membrane and the waterproof and breathable membrane, and a waterproof adhesive layer is arranged on the inside of the waterproof and breathable membrane.
[0006] The utility model is further configured as follows: 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 waterproof breathable membrane is a polytetrafluoroethylene membrane with breathable holes.
[0008] The utility model is further configured as follows: the waterproof breathable membrane is a polycarbonate membrane with air holes or a polyethylene terephthalate membrane with air holes.
[0009] The utility model is further configured as follows: the waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane.
[0010] 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.
[0011] The utility model is further configured as follows: the waterproof net is a flat plate with meshes.
[0012] The utility model is further configured as follows: the mesh is a square hole or a round hole.
[0013] The utility model is further configured as follows: the waterproof net is a steel net or a plastic net.
[0014] 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.
[0015] 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
[0016] Figure 1 It is an explosion diagram of Example 1;
[0017] Figure 2 is a cross-sectional view of Example 1;
[0018] Figure 3 It is a front view of Example 1;
[0019] Figure 4 This is an explosion diagram of Example 2;
[0020] Figure 5 It is a front view of Example 2;
[0021] Figure 6 This is an explosion diagram of Example 3;
[0022] Figure 7 is a cross-sectional view of Example 3;
[0023] Figure 8 This is a schematic diagram of the explosion of Example 4.
[0024] In the figure: 1. waterproof mesh; 11. square hole; 12. round hole; 2. waterproof breathable membrane; 3. waterproof adhesive layer. DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] Example 1
[0028] like Figure 1-3 As shown, it is a preferred embodiment of the utility model. This embodiment provides a breathable membrane component, which includes a waterproof net 1, a waterproof breathable membrane 2 and a waterproof adhesive layer 3. The waterproof principle of the waterproof net 1 is the surface tension of the liquid and the attraction between the liquid molecules. The waterproof and dustproof level of the waterproof breathable membrane 2 is higher than that of the waterproof net 1. The waterproof adhesive layer 3 is provided with a breathable channel; a waterproof net 1 is arranged outside the waterproof breathable membrane 2, a waterproof adhesive layer 3 is arranged between the waterproof net 1 outside the waterproof breathable membrane 2 and the waterproof breathable membrane 2, and a waterproof adhesive layer 3 is arranged inside the waterproof breathable membrane 2. 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.
[0029] In this embodiment, a layer of waterproof net 1 is arranged on the outside of the waterproof breathable membrane 2, which provides a layer of mechanical protection for the waterproof breathable membrane 2, prolongs the service life of the waterproof breathable membrane 2, and at the same time, the waterproof net 1 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 2 is higher than the waterproof and dustproof level of the waterproof net 1, the waterproof net 1 and the waterproof breathable membrane 2 can intercept droplets and solid particles in a graded manner, prolonging the service life of the waterproof net 1 and the waterproof breathable membrane 2. In addition, the processing accuracy of the waterproof net 1 is lower than that of the waterproof breathable membrane 2, which reduces the cost of the waterproof net 1 to a certain extent.
[0030] Specifically, the waterproof breathable membrane 2 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.
[0031] It should be noted that the waterproof breathable membrane 2 can be replaced by an expanded polytetrafluoroethylene membrane with a polytetrafluoroethylene membrane processed with tiny air holes, and the air holes 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 2 can also be a polycarbonate membrane with tiny air holes or a polyethylene terephthalate membrane with tiny air holes, and the air holes 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.
[0032] Specifically, the waterproof adhesive layer 3 is annular, and the outer edge of the waterproof adhesive layer 3 is aligned with the edges of the waterproof net 1 and the waterproof breathable membrane 2.
[0033] Specifically, the waterproof net 1 is a flat plate with meshes. In this embodiment, the meshes of the waterproof net 1 are round holes 12.
[0034] Specifically, the diameter of the mesh is 1000 μm-100 μm, and in this embodiment, the diameter of the mesh is 150 μm.
[0035] Specifically, the waterproof net 1 is a steel net or a plastic net, and the plastic net is preferably a PC net or a PET net.
[0036] Specifically, the waterproof adhesive layer 3 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 3 is a waterproof double-sided adhesive layer.
[0037] The breathable membrane component in this embodiment can pass reliability tests such as IP6K9K, AATCC118-2007, GB / T19977-2014, and Saltfog test (ASTM B117-11).
[0038] In summary, in this embodiment, a layer of waterproof net 1 is arranged on the outside of the waterproof breathable membrane 2, which provides a layer of mechanical protection for the waterproof breathable membrane 2, prolongs the service life of the waterproof breathable membrane 2, and at the same time, the waterproof net 1 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 2 is higher than that of the waterproof net 1, the waterproof net 1 and the waterproof breathable membrane 2 can intercept droplets and solid particles in a graded manner, prolonging the service life of the waterproof net 1 and the waterproof breathable membrane 2. In addition, the processing accuracy of the waterproof net 1 is lower than that of the waterproof breathable membrane 2, which reduces the cost of the waterproof net 1 to a certain extent.
[0039] Example 2
[0040] like Figure 4-5 As shown, the difference between this embodiment and embodiment 1 is that the mesh of the waterproof net 1 is a square hole 11. The side length of the mesh is 1000 μm-100 μm, and the side length of the mesh in this embodiment is 150 μm.
[0041] Example 3
[0042] like Figure 6-7 As shown, the difference between this embodiment and embodiment 1 is that: specifically, in the breathable membrane component, a waterproof net 1 is also arranged on the inner side of the waterproof breathable membrane 2, a waterproof adhesive layer 3 is arranged between the waterproof net 1 on the inner side of the waterproof breathable membrane 2 and the waterproof breathable membrane 2, and a waterproof adhesive layer 3 is arranged on the inner side of the waterproof net 1 on the inner side of the waterproof breathable membrane 2.
[0043] Example 4
[0044] like Figure 8 As shown, the difference between this embodiment and embodiment 3 is that: in this embodiment, the mesh of the waterproof net 1 is square holes 11.
[0045] 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 component, characterized in that: The invention comprises a waterproof net (1), a waterproof breathable membrane (2) and a waterproof adhesive layer (3); the waterproof and dustproof level of the waterproof and breathable membrane (2) is higher than that of the waterproof net (1); and a ventilation channel is provided on the waterproof adhesive layer (3); a waterproof net (1) is arranged outside the waterproof and breathable membrane (2); a waterproof adhesive layer (3) is arranged between the waterproof net (1) outside the waterproof and breathable membrane (2) and the waterproof and breathable membrane (2); and a waterproof adhesive layer (3) is arranged inside the waterproof and breathable membrane (2).
2. The breathable membrane member according to claim 1, characterized in that: A waterproof net (1) is also arranged on the inner side of the waterproof breathable membrane (2); a waterproof adhesive layer (3) is arranged between the waterproof net (1) on the inner side of the waterproof breathable membrane (2) and the waterproof breathable membrane (2); and a waterproof adhesive layer (3) is arranged on the inner side of the waterproof net (1) on the inner side of the waterproof breathable membrane (2).
3. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof and breathable membrane (2) is a polytetrafluoroethylene membrane with air holes.
4. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof breathable membrane (2) is a polycarbonate membrane with air permeability holes or a polyethylene terephthalate membrane with air permeability holes.
5. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof and breathable membrane (2) is an expanded polytetrafluoroethylene membrane.
6. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof adhesive layer (3) is annular, the air permeable channel is a hollow area in the middle of the waterproof adhesive layer (3), and the outer edge of the waterproof adhesive layer (3) is aligned with the edges of the waterproof net (1) and the waterproof breathable membrane (2).
7. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof net (1) is a flat plate with meshes.
8. The breathable membrane member according to claim 7, characterized in that: The mesh is a square hole (11) or a round hole (12).
9. The breathable membrane member according to claim 7, characterized in that: The waterproof net (1) is a steel net or a plastic net.
10. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof adhesive layer (3) is a waterproof double-sided adhesive layer or a hot-melt adhesive layer or an ultrasonic welding layer.