TW202412579A - Electronic device casing with waterproof pressure relief structure - Google Patents

Abstract

An electronic device casing with a waterproof pressure relief structure includes a casing body, a waterproof breathable membrane and a waterproof thin plate. The casing body has an inner space, an inner surface and an outer surface, and along a thickness direction is provided with a central channel through the inner surface and the outer surface, and a plurality of radiation grooves are radiated outward from the central channel. The waterproof breathable membrane is disposed on the inner surface to close the central channel to separate the inner space and the central channel. The waterproof thin plate is disposed on the outer surface to cover the central channel, and at least part of the radiation groove is still exposed on the outer surface. Wherein, when the air pressure in the inner space is greater than the air pressure outside the casing body, it is discharged from the inner space through the waterproof breathable membrane, the central channel and the radiation groove in sequence to the outside of the electronic device casing to reduce the internal air pressure.

Description

Electronic device casing with waterproof pressure relief structure

The present invention relates to an electronic device casing, and more particularly to an electronic device casing with a waterproof pressure relief structure.

In recent years, technology has developed rapidly, and a variety of electronic products can be seen everywhere in daily life, which has greatly improved people's living standards. In order to allow users to use electronic devices in various environments, most electronic devices are designed for various environments; among them, rainy days or humid environments have the most serious impact on electronic devices.

As mentioned above, in order to prevent the electronic components inside the electronic devices from being affected by moisture, the electronic devices are usually sealed to prevent these electronic devices from being used normally even on rainy days. However, when using electronic devices, it is still possible that due to vibration or impact, or even incomplete sealing, rainwater may enter the internal space of the electronic device through the gaps, especially for navigation devices or dashcams that are often exposed to the outside. As a result, due to the sealing design, the rainwater cannot be discharged smoothly and accumulates at the bottom of the internal space. Then, when the electronic device generates heat due to operation or is exposed to the sun when the weather clears, the rainwater accumulated in the electronic device will evaporate into water vapor. However, because it cannot be discharged, the electronic components inside the electronic device are easily corroded by water vapor, which will reduce the service life of the electronic device over time. It is even possible that the shell of the electronic device will swell due to excessive internal water vapor pressure, affecting the safety of use.

In order to solve the problem of waterproofing and excessive pressure of electronic devices, the existing method is to install a waterproof pressure relief valve on the housing of the electronic device to prevent rainwater from entering the electronic device and allow the gas inside and outside the electronic device to circulate to maintain pressure balance. Among them, the existing waterproof pressure relief valve mainly opens a hole on the housing of the electronic device and then seals the hole with a waterproof breathable membrane. However, in order to prevent external water from directly spraying into the hole and destroying the sealing of the waterproof breathable membrane, some water-blocking structures are usually provided at the hole connected to the outside to prevent water from spraying.

However, although the water-blocking structure used to prevent external water jets can prevent the direct impact of the water flow, it is easy for the water to splash around when the water flow hits the water-blocking structure and accumulate between the water-blocking structure and the waterproof breathable membrane, and cannot be discharged smoothly.

In view of the fact that in the prior art, the existing waterproof pressure relief valve can use a water-blocking structure to prevent water flow from directly impacting the waterproof breathable membrane, but it is easy for water to accumulate between the water-blocking structure and the waterproof breathable membrane and cannot be discharged smoothly; therefore, the main purpose of the present invention is to provide an electronic device casing with a waterproof pressure relief structure, which can not only effectively prevent water flow from directly impacting the waterproof breathable membrane, but also allow water flow to be discharged smoothly without the problem of accumulation.

The present invention solves the problems of the prior art by adopting a necessary technical means to provide an electronic device casing with a waterproof pressure relief structure, comprising a casing body, a waterproof breathable membrane and a waterproof sheet. The casing body encloses an internal space, and has an inner side surface and an outer side surface facing and facing away from the internal space respectively, a central channel penetrating the inner side surface and the outer side surface is opened along a thickness direction, and a plurality of radiation grooves are opened from the central channel to radiate outward and exposed on the outer side surface.

The waterproof breathable membrane is arranged on the inner side and used to close the central channel to separate the inner space from the central channel. The waterproof sheet is arranged on the outer side and used to cover the central channel and allow at least part of the radiation groove to be exposed on the outer side.

When an internal air pressure of a gas in the internal space is greater than an external air pressure outside the casing body, part of the gas is discharged from the internal space to the outside of the electronic device casing through the waterproof breathable membrane, the central channel and the radiation groove in sequence to reduce the internal air pressure.

In an auxiliary technical means derived from the above-mentioned necessary technical means, the casing body also has a convex ring structure, which is centered on the central channel and protrudes from the inner side toward the internal space, thereby forming a breathable membrane setting groove connecting the internal space and the central channel, and the waterproof breathable membrane is fixedly set in the breathable membrane setting groove.

In an additional technical means derived from the above necessary technical means, the housing body further has a concave space, which is formed by shrinking from the outer side toward the inner space with the central channel as the center, and partially overlaps and intersects with the central channel and the radiation grooves, and the waterproof sheet is fixed to the concave space. Preferably, the waterproof sheet is bonded and fixed to the concave space.

In an auxiliary technical means derived from the above necessary technical means, the radiation grooves extend from the central channel along a radial direction perpendicular to the thickness direction to the outside of the waterproof sheet so as to be partially exposed on the outer side surface.

In an auxiliary technical means derived from the above necessary technical means, the radiation grooves are evenly distributed outwardly with the central channel as the center.

As described above, the present invention mainly provides a central channel connected to the internal space on the bottom shell of the casing body, and provides a radiation groove connected to the central channel on the outer side, and then covers the central channel with a waterproof sheet to prevent external water from directly spraying into the central channel and impacting the waterproof breathable membrane used to isolate the central channel from the internal space, but allows water entering the central channel or gas in the internal space to be discharged through the radiation groove connected to the central channel.

The specific embodiments of the present invention will be further described by the following embodiments and drawings.

Please refer to the first and second figures, the first figure is a three-dimensional schematic diagram showing the electronic device casing with a waterproof pressure relief structure provided by a preferred embodiment of the present invention; the second figure is a three-dimensional exploded schematic diagram showing the electronic device casing with a waterproof pressure relief structure provided by a preferred embodiment of the present invention.

As shown in the first and second figures, an electronic device case 100 with a waterproof pressure relief structure comprises a case body 1, a waterproof breathable membrane 2 and a waterproof sheet 3. The case body 1 comprises a bottom case 11, a side frame 12 and a screen 13.

Please continue to refer to Figures 3 to 10. Figure 3 is an enlarged schematic diagram of circle A in Figure 2; Figure 4 is a three-dimensional schematic diagram showing another viewing angle of the electronic device to which the electronic device casing with a waterproof pressure relief structure provided by the preferred embodiment of the present invention is applied; Figure 5 is an enlarged schematic diagram of circle B in Figure 4; Figure 6 is a three-dimensional exploded schematic diagram of Figure 5; Figure 7 is a C-C cross-sectional schematic diagram of Figure 4; Figure 8 is an enlarged schematic diagram of circle D in Figure 7; Figure 9 is a C-C cross-sectional schematic diagram of Figure 4; and Figure 10 is an enlarged schematic diagram of circle E in Figure 9.

As shown in the first to tenth figures, the bottom shell 11 has an inner side surface 111 and an outer side surface 112 arranged opposite to each other, and the bottom shell 11 has four central channels 113 (only one is marked in the figure) penetrating the inner side surface 111 and the outer side surface 112 along a thickness direction D1, and four radiation grooves 114 (only one is marked in the figure) are radiated outward from each central channel 113 and exposed on the outer side surface 112. ; Among them, the four radiation grooves 114 extend respectively from the central channel 113 along a radial direction D2 perpendicular to the thickness direction D1, and in the present embodiment, the four radiation grooves 114 are evenly distributed outwardly with the central channel 113 as the center, thereby presenting a cross-shaped structure, but not limited to this, in other embodiments, as long as there are more than two radiation grooves 114, it is better to have more than three.

The frame 12 is integrally connected to the bottom shell 11 , and the frame 12 and the bottom shell 11 further enclose an inner space S1 ; wherein the inner side surface 111 faces the inner space S1 , and the outer side surface 112 faces away from the inner space S1 .

In addition, the bottom shell 11 also has four convex ring structures 115 (only one is marked in the figure) and four concave spaces S3 (only one is marked in the figure). The four convex ring structures 115 correspond to the four central channels 113 respectively. Each convex ring structure 115 is centered on the corresponding central channel 113 and protrudes from the inner side surface 111 toward the internal space S1, thereby forming a breathable membrane setting groove S2 connecting the internal space S1 and the central channel 113.

On the other hand, the four concave spaces S3 are formed by respectively corresponding to the four central channels 113 and contracting from the outer surface 112 toward the inner space S1, and each concave space S3 is not only connected to the corresponding central channel 113, but also connected to four radiation grooves 114, which is equivalent to each concave space S3 overlapping and intersecting with one central channel 113 and four radiation grooves 114.

The four waterproof breathable membranes 2 correspond to the four central channels 113 respectively and are fixedly bonded to the inner side surface 111 in the four breathable membrane setting grooves S2 to close the central channel 113 to separate the inner space S1 from the central channel 113. The waterproof breathable membrane 2 is, for example, PTFE (Teflon), which can prevent liquids such as water from passing through and allow gas to pass through.

The four waterproof sheets 3 are fixed in the concave space S3 respectively, so as to be arranged on the outer side surface 112, and because the concave space S3 is connected to the central channel 113, when the waterproof sheet 3 is fixed in the concave space S3, the central channel 113 will be covered, and part of the radiation groove 114 will be shielded; wherein, because the radiation groove 114 will extend from the central channel 113 along the radial direction D2 to the outside of the waterproof sheet 3, the radiation groove 114 will be partially exposed to the outer side surface 112. In addition, because the waterproof sheet 3 is fixed in the concave space S3, the surface of the waterproof sheet 3 can be made consistent with the surface of the outer side surface 112, thereby effectively preventing the waterproof sheet 3 from being hit by foreign objects and being peeled off.

In actual use, when an internal air pressure of a gas in the internal space S1 is greater than an external air pressure outside the casing body 1, part of the gas is discharged from the internal space S1 to the outside of the casing body 1 through the waterproof breathable membrane 2, the central channel 113 and the radiation groove 114 in sequence to reduce the internal air pressure.

On the other hand, when liquid such as water sprays from the outside of the housing body 1 toward the outer side surface 112 and enters the radiation groove 114, or even enters the central channel 113, the water flow will also be discharged from the radiation groove 114 located at a lower position. Among them, although four radiation grooves 114 are provided in this embodiment, in other embodiments, even if there are only two radiation grooves 114, and the housing body 1 is arranged at an angle such that the two radiation grooves 114 are maintained in a horizontal direction, the water flow can be discharged slowly because there is no structure to block the water flow. However, more than three radiation grooves 114 are still more conducive to the water flow being discharged as quickly as possible at any angle.

In summary, compared with the waterproof pressure relief valve of the prior art that uses a water-blocking structure to block water, which easily allows water to accumulate between the water-blocking structure and the waterproof breathable membrane, thereby preventing the water flow from being discharged smoothly, the electronic device casing with a waterproof pressure relief structure of the present invention mainly has a central channel connected to the internal space opened at the bottom shell of the casing body, and a radiation groove connected to the central channel opened on the outer side, and then a waterproof sheet is used to cover the central channel to prevent the external water flow from directly spraying into the central channel and impacting the waterproof breathable membrane used to isolate the central channel and the internal space, but can allow the water entering the central channel or the gas in the internal space to be discharged through the radiation groove connected to the central channel.

The above detailed description of the preferred specific embodiments is intended to more clearly describe the features and spirit of the present invention, but is not intended to limit the scope of the present invention by the preferred specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent application for the present invention.

100: Electronic device case with waterproof pressure relief structure 1: Case body 11: Bottom case 111: Inner side 112: Outer side 113: Center channel 114: Radiation groove 115: Convex ring structure 12: Frame 13: Screen 2: Waterproof breathable membrane 3: Waterproof sheet S1: Internal space S2: Breathable membrane setting groove S3: Concave space D1: Thickness direction D2: Radial direction

The first figure is a three-dimensional schematic diagram showing the electronic device casing with a waterproof pressure relief structure provided by the preferred embodiment of the present invention; The second figure is a three-dimensional exploded schematic diagram showing the electronic device casing with a waterproof pressure relief structure provided by the preferred embodiment of the present invention; The third figure is an enlarged schematic diagram of circle A in the second figure; The fourth figure is a three-dimensional schematic diagram showing another viewing angle of the electronic device to which the electronic device casing with a waterproof pressure relief structure provided by the preferred embodiment of the present invention is applied; The fifth figure is an enlarged schematic diagram of circle B in the fourth figure; The sixth figure is a three-dimensional exploded schematic diagram of the fifth figure; The seventh figure is a C-C cross-sectional schematic diagram of the fourth figure; The eighth figure is an enlarged schematic diagram of circle D in the seventh figure; The ninth figure is a C-C cross-sectional schematic diagram of the fourth figure; and The tenth figure is an enlarged schematic diagram of circle E in the ninth figure.

112: Outer side

113: Central channel

114: Radiation Trough

3: Waterproof sheet

S3: Concave space

D1: thickness direction

D2: radial

Claims (6)

An electronic device case with a waterproof pressure relief structure comprises: A case body, which encloses an internal space, has an inner side surface and an outer side surface facing and facing away from the internal space respectively, a central channel penetrating the inner side surface and the outer side surface is opened along a thickness direction, and a plurality of radiation grooves are opened and exposed on the outer side surface from the central channel to the outside; A waterproof breathable membrane is arranged on the inner side surface and used to close the central channel to separate the internal space and the central channel; and A waterproof sheet is arranged on the outer side surface and used to cover the central channel and make the radiation grooves at least partially exposed on the outer side surface; When the internal air pressure of a gas in the internal space is greater than the external air pressure outside the casing body, part of the gas is discharged from the internal space to the outside of the electronic device casing through the waterproof breathable membrane, the central channel and the radiation grooves in sequence to reduce the internal air pressure. An electronic device case with a waterproof pressure relief structure as described in claim 1, wherein the case body also has a convex ring structure, which is centered on the central channel and protrudes from the inner side toward the internal space, thereby forming a breathable membrane setting groove connecting the internal space and the central channel, and the waterproof breathable membrane is fixedly set in the breathable membrane setting groove. An electronic device case with a waterproof pressure relief structure as described in claim 1, wherein the case body also has a concave space, which is formed by shrinking from the outer side toward the inner space with the central channel as the center, and partially overlaps and intersects with the central channel and the radiation grooves, and the waterproof sheet is fixed in the concave space. An electronic device casing with a waterproof pressure relief structure as described in claim 3, wherein the waterproof sheet is bonded and fixed to the concave space. An electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the radiation grooves extend from the central channel along a radial direction perpendicular to the thickness direction to the outside of the waterproof sheet so as to be partially exposed on the outer side surface. An electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the radiation grooves are evenly distributed outward with the central channel as the center.

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