Breathable membrane component
By setting up a waterproof mesh on the outer and inner sides of the waterproof breathable membrane and combining it with a breathable membrane to form a braided mesh structure, the problem of waterproof breathable membrane being easily damaged is solved, the service life is extended and the waterproof and dust protection level is improved, and more efficient waterproofness is achieved and cost reduction.
Patent Information
- Application Number
- CN202420626828.7
- 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 waterproof and breathable membrane is easily damaged due to external impact during use, resulting in a decrease in water resistance and cannot be used normally, affecting its service life and water resistance.
A waterproof mesh is arranged on the outer and inner sides of the waterproof and breathable membrane, and connected to the breathable membrane through the waterproof adhesive layer to form a braided mesh structure, providing mechanical protection, and passing through the breathable holes of polytetrafluoroethylene film or polycarbonate film Improve waterproof and dustproof level.
It extends the service life of the waterproof and breathable membrane, improves the waterproof and dustproof level, can effectively intercept liquid droplets and solid particles, and reduces costs. At the same time, the waterproof and dustproof level of the breathable membrane is higher than that of the waterproof mesh, which enhances the overall waterproofness.
Smart Images
Figure CN222250553U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of breathable membranes, and in particular relates 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 working stability and reliability of electronic and electrical products, instruments and equipment, and control systems, it is necessary to seal the outer shell (box) to achieve waterproof and dustproof effects.
[0003] Electronic products generate heat during use, and when the outside temperature rises, the gas pressure inside the sealed shell increases, generating positive pressure; when the outside environment cools down (such as at night or when it rains) or when the product is shut down, negative pressure will be generated inside the sealed shell. If the pressure inside and outside the sealed shell cannot be quickly balanced, the working stability of the internal electrical components may be affected. When the gas pressure difference exceeds the limit that the sealing structure can withstand, the structural seal will fail, and then the waterproof failure will occur. In order to solve the above problems, a small hole is generally set on the shell, and then a waterproof breathable membrane is installed to cover the small hole to achieve the effect of waterproof and breathable.
[0004] 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.
[0005] 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
[0006] The problem to be solved by the utility model is: how to prolong the service life of the waterproof breathable membrane and improve its waterproof performance.
[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0008] A breathable membrane component comprises a waterproof net, a waterproof breathable membrane and a waterproof adhesive layer, wherein the waterproof and dustproof level of the waterproof breathable membrane is higher than that of the waterproof net, and a breathable channel is provided on the waterproof adhesive layer; a waterproof net is arranged on the outer side of the waterproof breathable membrane, a waterproof adhesive layer is arranged between the waterproof net on the outer side of the waterproof breathable membrane and the waterproof breathable membrane, a waterproof adhesive layer is arranged on the inner side of the waterproof breathable membrane, and the waterproof net is a woven net structure.
[0009] Furthermore, 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.
[0010] Furthermore, the waterproof breathable membrane is a polytetrafluoroethylene membrane with air holes.
[0011] Furthermore, the waterproof breathable membrane is a polycarbonate membrane with air permeability holes or a polyethylene terephthalate membrane with air permeability holes.
[0012] Furthermore, the waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane.
[0013] Furthermore, 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] Furthermore, the waterproof adhesive layer is a waterproof double-sided adhesive layer or a hot melt adhesive layer or an ultrasonic welding layer.
[0015] Furthermore, the waterproof net is a steel net or a plastic net.
[0016] Furthermore, the woven mesh includes multiple straight rods and multiple curved rods. The straight rods have the same diameter and are arranged at equal intervals. The curved rods are inserted from the top surface or bottom surface of the first straight rod into the bottom surface or top surface of the second straight rod in sequence along the arrangement direction of the straight rods, and then pass out from the top surface or bottom surface of the third straight rod, continuously and alternately passing in and out.
[0017] Furthermore, of the two adjacent bent rods on the same straight rod, one bent rod is always on the top surface of the straight rod, and the other bent rod is always on the bottom surface of the straight rod.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] (1) The utility model provides a layer of waterproof net on the outer side of the waterproof breathable membrane. The structure of the waterproof net is a woven net, which is wear-resistant and provides a layer of mechanical protection for the waterproof breathable membrane, thereby extending the service life of the waterproof breathable membrane.
[0020] (2) The waterproof net of the utility model also has certain waterproof and dustproof functions, 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 and breathable membrane is higher than that of the waterproof net, the waterproof net and the waterproof and breathable membrane can intercept droplets and solid particles in a graded manner, thereby extending the service life of the waterproof net and the waterproof and breathable membrane. In addition, the processing accuracy of the waterproof net is lower than that of the waterproof and breathable membrane, which reduces the cost of the waterproof net to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1This is a schematic diagram of an explosion of a breathable membrane component according to Embodiment 1 of the present utility model;
[0022] Figure 2 It is a front view of the breathable membrane component of the first embodiment of the utility model;
[0023] Figure 3 It is a structural schematic diagram of the waterproof net of the utility model;
[0024] Figure 4 This is a schematic diagram of an explosion of a breathable membrane component according to Embodiment 2 of the present utility model;
[0025] Figure 5 It is a front view of the breathable membrane component of the second embodiment of the utility model;
[0026] Figure numerals: 1. waterproof net; 11. straight rod; 12. curved rod; 2. waterproof breathable membrane; 3. waterproof adhesive layer. DETAILED DESCRIPTION
[0027] 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 protection scope of the utility model.
[0028] 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.
[0029] Embodiment 1
[0030] Combination Figure 1-Figure 2 As shown, the utility model provides a breathable membrane component, including a waterproof net 1 and a waterproof breathable membrane 2. The waterproof net 1 is arranged on the outside of the waterproof breathable membrane 2, and the inside of the waterproof net 1 and the outside of the waterproof breathable membrane 2 are bonded together by a waterproof adhesive layer 3. The waterproof principle of the waterproof net 1 is the surface tension of the liquid and the attraction between liquid molecules. The waterproof and dustproof level of the waterproof breathable membrane 2 is higher than that of the waterproof net 1. The outside referred to in this embodiment is the side that is most likely to contact with droplets and solid particles, and the inside referred to in this embodiment is the side that is least likely to contact with droplets and solid particles.
[0031] The waterproof adhesive layer 3 is provided with a ventilation channel for ventilation between the waterproof net 1 and the waterproof breathable membrane 2. A waterproof adhesive layer 3 is provided on the inner side of the waterproof breathable membrane 2. The waterproof net 1, the waterproof adhesive layer 3, and the waterproof breathable membrane 2 are laminated to form a steel mesh breathable membrane through a laminating and pressing process.
[0032] In this embodiment, a layer of waterproof net 1 is arranged on the outside of the waterproof breathable membrane 2, and the waterproof net 1 provides a layer of mechanical protection for the waterproof breathable membrane 2, thereby extending the service life of the waterproof breathable membrane 2; 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 entire steel mesh breathable membrane; 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, thereby extending 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, thereby reducing the cost of the waterproof net 1 to a certain extent.
[0033] 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.
[0034] 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. 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.
[0035] The waterproof breathable membrane 2 can also be a polycarbonate membrane with tiny air pores or a polyethylene terephthalate membrane with tiny air pores. The polycarbonate membrane and the air pores on 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.
[0036] Specifically, Figure 1 As shown, the waterproof adhesive layer 3 is an annular structure, the edge of the waterproof adhesive layer 3 is aligned with the edge of the waterproof net 1 and the waterproof breathable membrane 2, and the air permeable channel of the waterproof adhesive layer 3 is the hollow area in the middle of the waterproof adhesive layer 3.
[0037] Specifically, Figure 3As shown, the waterproof net 1 is a woven net structure, which includes a plurality of straight rods 11 and a plurality of bent rods 12. The straight rods 11 have the same diameter and are arranged at equal intervals. The bent rods 12 penetrate from the top surface or bottom surface of the first straight rod 11 into the bottom surface or top surface of the second straight rod 11 in sequence along the arrangement direction of the straight rods 11, and then penetrate from the top surface or bottom surface of the third straight rod 11, continuously and alternately penetrating in and out; for two adjacent bent rods 12, the parts of the bent rod 12 on the same straight rod 11 are always such that a part of the bent rod 12 is on the top surface of the straight rod 11, and a part of the other bent rod 12 is on the bottom surface of the straight rod 11.
[0038] The waterproof net 1 is made of a steel net. The waterproof net 1 can also be a plastic net woven from the plastic strips, and the plastic strips are preferably made of PC or PET.
[0039] 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.
[0040] The steel mesh breathable membrane in this embodiment can pass reliability tests such as IP6K9K, AATCC118-2007, GB / T19977-2014, and Saltfog test (ASTM B117-11).
[0041] 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.
[0042] Embodiment 2
[0043] Combination Figure 4-Figure 5 As shown, the difference between this embodiment and the first embodiment is that: on the basis of the first embodiment, in the steel mesh breathable membrane of this embodiment, a waterproof mesh 1 is also arranged on the inner side of the waterproof breathable membrane 2, and the waterproof mesh 1 on the inner side of the waterproof breathable membrane 2 is adhesively connected to the waterproof breathable membrane 2 through a layer of waterproof adhesive layer 3, and a layer of waterproof adhesive layer 3 is arranged on the inner side of the waterproof mesh 1 on the inner side of the waterproof breathable membrane 2.
[0044] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.
[0045] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.
Claims
1. A breathable membrane component, characterized in that: It includes a waterproof mesh, 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 mesh, and a ventilation channel is opened on the waterproof adhesive layer. A waterproof mesh is arranged on the outside of the waterproof and breathable membrane, a waterproof adhesive layer is arranged between the waterproof mesh on the outside of the waterproof and breathable membrane and the waterproof and breathable membrane, a waterproof adhesive layer is arranged on the inside of the waterproof and breathable membrane, and the waterproof mesh is a woven mesh structure.
2. The breathable membrane member according to claim 1, characterized in that 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.
3. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof and breathable membrane is a polytetrafluoroethylene membrane with air permeable holes.
4. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof breathable membrane is a polycarbonate membrane with air permeable holes or a polyethylene terephthalate membrane with air permeable holes.
5. The breathable membrane member according to claim 1 or 2, characterized in that: The waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane.
6. The breathable membrane member according to claim 1, characterized in that 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.
7. The breathable membrane member according to claim 1, characterized in that The waterproof adhesive layer is a waterproof double-sided adhesive layer or a hot-melt adhesive layer or an ultrasonic welding layer.
8. The breathable membrane member according to claim 1, characterized in that The waterproof mesh is a steel mesh or a plastic mesh.
9. The breathable membrane member according to claim 8, characterized in that The woven net includes multiple straight rods and multiple curved rods. The straight rods have the same diameter and are arranged at equal intervals. The curved rods pass through the bottom surface or top surface of the second straight rod from the top surface or bottom surface of the first straight rod in sequence along the arrangement direction of the straight rods, and then pass through the top surface or bottom surface of the third straight rod, continuously and alternately passing through.
10. The breathable membrane member according to claim 9, characterized in that For two adjacent bent rods on the same straight rod, one bent rod is always on the top surface of the straight rod, and the other bent rod is on the bottom surface of the straight rod.