TWI815651B - 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 and pressure relief structure

The present invention relates to an electronic device casing, and in particular, to an electronic device casing with a waterproof and pressure-relieving structure.

In recent years, science and technology have developed rapidly. Various 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.

Following the above, in order to prevent the electronic components inside the electronic device from being affected by moisture, the electronic device is usually designed to be sealed to prevent these electronic devices from being used normally in rainy days. However, when the electronic device is in use, 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 navigation devices or driving recorders that are often exposed to the outside. Due to the design, rainwater cannot be drained smoothly and accumulates at the bottom of the internal space. Then, when the electronic device heats up due to operation or due to sunny weather and exposure, the rainwater accumulated in the electronic device will evaporate into water vapor, but it cannot be drained. It is easy for the electronic components inside the electronic device to be corroded by water vapor, which will reduce the service life of the electronic device over time. It may even cause the casing of the electronic device to expand and bulge due to excessive internal water vapor pressure, affecting the safety of use. sex.

In order to solve the problems of waterproofing and excessive pressure of electronic devices, the existing method is to install a waterproof pressure relief valve on the casing of the electronic device to prevent rainwater from entering the inside of the electronic device, and to 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 in the casing of the electronic device, and then seals the hole with a waterproof and breathable membrane. However, in order to prevent external water flow from directly spraying into the hole and destroying the sealing of the waterproof and breathable membrane, the waterproof and breathable membrane is usually sealed. There will be some water-retaining structures at the holes connected to the outside to prevent water from spraying.

However, although the water-retaining 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 and accumulate between the water-retaining structure and the waterproof breathable membrane when the water flow hits the water-retaining structure. time and cannot be discharged smoothly.

In view of the fact that in the prior art, the existing waterproof pressure relief valve can use the water retaining structure to prevent the water flow from directly impacting the waterproof and breathable membrane, but it is easy for water to accumulate between the water retaining structure and the waterproof and breathable membrane, making it impossible to drain 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 and breathable membrane, but also allow water flow to be drained smoothly without accumulation problems.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention are to provide an electronic device casing with a waterproof and pressure-relieving structure, which includes a casing body, a waterproof and breathable membrane and a waterproof sheet. The main body of the casing forms an internal space, with an inner side and an outer side respectively facing and facing away from the inner space. A central channel is opened along a thickness direction and runs through the inner side and the outer side, and extends from the central channel to the inner space. The external radiation is provided with a plurality of radiation grooves exposed on the outer surface.

The waterproof and breathable membrane is set on the inner side and used to seal the central channel to separate the internal space and the central channel. The waterproof sheet is arranged on the outer side and used to cover the central channel, so that the radiation groove is still exposed at least partially on the outer side.

Among them, when the internal air pressure of the gas in the internal space is greater than the external air pressure outside the casing body, part of the gas system is discharged from the internal space through the waterproof and 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.

In one of the subsidiary technical means derived from the above necessary technical means, the casing body also has a convex ring structure. The convex ring structure is centered on the central channel and protrudes from the inner side toward the internal space, thereby forming A breathable membrane installation groove is connected to the internal space and the central channel, and the waterproof breathable membrane is fixedly installed in the breathable membrane installation groove.

In an ancillary technical means derived from the above necessary technical means, the casing body also has an inner concave space, and the inner concave space is formed by retracting from the outer surface toward the inner space with the central channel as the center. It partially overlaps and intersects with the central channel and the radiation grooves, and the waterproof sheet is fixed in the recessed space. Preferably, the waterproof sheet is bonded and fixed to the recessed space.

In an ancillary technical means derived from the above necessary technical means, the radiating grooves respectively extend from the central channel in a radial direction perpendicular to the thickness direction to the outside of the waterproof sheet, thereby being partially exposed on the outer surface.

In an additional technical means derived from the above necessary technical means, the radiation trenches are evenly distributed outward with the central channel as the center.

As mentioned above, the present invention mainly opens a central channel connected to the internal space on the bottom shell of the casing body, and opens a radiation groove connected to the central channel on the outer side, and then uses a waterproof sheet to cover the central channel. This prevents external water flow from directly spraying into the central channel and impacting the waterproof and breathable membrane used to isolate the central channel from the internal space. However, it can also allow water to enter the central channel or water in the internal space through the radiation groove connected to the central channel. Gas can be vented.

Specific embodiments used in the present invention will be further described through the following examples and drawings.

Please refer to the first and second figures. The first figure is a three-dimensional schematic view of an electronic device casing with a waterproof pressure relief structure provided by a preferred embodiment of the present invention; the second figure is a schematic view of an electronic device casing with a waterproof pressure relief structure according to a preferred embodiment of the present invention. A three-dimensional exploded view of an electronic device casing with a waterproof and pressure-relieving structure is provided.

As shown in the first and second figures, an electronic device case 100 with a waterproof pressure relief structure includes a case body 1, a waterproof and breathable membrane 2 and a waterproof sheet 3. The casing body 1 includes a bottom shell 11 , a 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 shows the application of the electronic device casing with the waterproof pressure relief structure provided by the preferred embodiment of the present invention. The schematic three-dimensional view of the electronic device from another perspective; the fifth picture is an enlarged schematic diagram of circle B in the fourth picture; the sixth picture is a three-dimensional exploded schematic diagram of the fifth picture; the seventh picture is a C-C cross-sectional schematic diagram of the fourth picture; Figure 8 is an enlarged schematic diagram of circle D in Figure 7; Figure 9 is a schematic diagram of the C-C section in Figure 4; Figure 10 is an enlarged schematic diagram of circle E in Figure 9.

As shown in Figures 1 to 10, the bottom case 11 has an inner side 111 and an outer side 112 arranged oppositely, and the bottom case 11 is provided with four holes penetrating the inner side 111 and the outer side 112 along a thickness direction D1. A central channel 113 (only one is marked in the figure), and four radiating grooves 114 (only one is marked in the figure) radiating outward from each central channel 113 and exposed on the outer side 112; among them, the four radiating trenches 114 They respectively extend from the central channel 113 along a radial direction D2 perpendicular to the thickness direction D1, and in this embodiment, the four radiating grooves 114 are evenly distributed outwards with the central channel 113 as the center, and then present a cross shape. structure, but is not limited to this. In other embodiments, as long as there are two or more radiation trenches 114, it can be implemented, preferably three or more.

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

In addition, the bottom case 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 respectively correspond to the four central channels 113. Each convex ring structure 115 is centered on the corresponding central channel 113 and protrudes from the inner side 111 toward the internal space S1, thereby forming a connection between the inner space S1 and the internal space S1. The breathable membrane of the internal space S1 and the central channel 113 is provided with a groove S2.

On the other hand, the four concave spaces S3 are respectively formed by corresponding to the four central channels 113 and shrinking from the outer side 112 toward the inner space S1, and each concave space S3 is connected to the corresponding central channel 113. , and is also connected to four radiating trenches 114, which is equivalent to each concave space S3 overlapping and intersecting with a central channel 113 and four radiating trenches 114.

The four waterproof and breathable membranes 2 respectively correspond to the four central channels 113 and are fixedly bonded to the inner side 111 in the four breathable membrane setting grooves S2 to close the central channel 113 and separate the internal space S1 from the central channel 113 . Among them, the waterproof and 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 respectively fixed in the recessed space S3 to be arranged on the outer side 112. Since the recessed space S3 is connected to the central channel 113, when the waterproof sheet 3 is fixed in the recessed space S3, it will cover The central channel 113 covers part of the radiation trench 114; among them, since the radiation trench 114 will extend from the central channel 113 along the radial direction D2 to the outside of the waterproof sheet 3, the radiation trench 114 will be partially exposed on the outer side 112 . In addition, since the waterproof sheet 3 is fixed in the recessed space S3, the surface of the waterproof sheet 3 can be consistent with the surface of the outer side 112, thereby effectively preventing the waterproof sheet 3 from being peeled off due to collision with foreign objects.

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

On the other hand, when liquid such as water flows from the outside of the casing body 1 toward the outer side 112 and enters the radiation groove 114 , or even enters the central channel 113 , the water flow will be discharged from the lower radiation groove 114 . Among them, although four radiating trenches 114 are provided in this embodiment, in other embodiments, even if there are only two radiating trenches 114, and the arrangement angle of the casing body 1 allows the two radiating trenches 114 to be maintained horizontally. In the direction, the water flow can be discharged slowly because there is no structure blocking the water flow, but more than three radiating grooves 114 are more conducive to the water flow being discharged as quickly as possible at any angle.

To sum up, compared with the previous technology of using a water-retaining structure to retain water in the waterproof pressure relief valve, it is easy for water to accumulate between the water-retaining structure and the waterproof breathable membrane, thereby preventing the water from being discharged smoothly. The present invention has the waterproof function The electronic device casing with a pressure relief structure mainly has a central channel connected to the internal space on the bottom shell of the casing body, and a radiation groove connected to the central channel on the outer side, and then uses a waterproof sheet to cover the center The channel is used to prevent external water flow from directly spraying into the central channel and impacting the waterproof and breathable membrane used to isolate the central channel from the internal space, but it can also allow water or internal water to enter the central channel through the radiation groove connected to the central channel. The gas in the space can be exhausted.

Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be more clearly described, but the scope of the present invention is not limited by the above disclosed preferred embodiments. On the contrary, the intention is to cover various modifications and equivalent arrangements within the scope of the patent for which the present invention is intended.

100: Electronic device casing with waterproof and pressure relief structure

1:Case body

11: Bottom shell

111: Medial side

112:Outer side

113:Center channel

114: Radiation trench

115:convex ring structure

12:Border

13:Screen

2: Waterproof and breathable membrane

3: Waterproof sheet

S1: Internal space

S2: Breathable membrane setting slot

S3: concave space

D1:Thickness direction

D2: Radial

The first figure is a schematic three-dimensional view of an electronic device casing with a waterproof and pressure-relieving structure provided by a preferred embodiment of the present invention; The second figure shows a three-dimensional exploded schematic diagram of an electronic device casing with a waterproof and pressure-relieving structure provided by a preferred embodiment of the present invention; The third picture is an enlarged diagram of circle A in the second picture; The fourth figure is a schematic three-dimensional view of an electronic device applied to the electronic device casing with a waterproof pressure relief structure provided by the preferred embodiment of the present invention from another perspective; The fifth picture is an enlarged diagram of circle B in the fourth picture; The sixth picture is a three-dimensional exploded view of the fifth picture; The seventh picture is a schematic diagram of the C-C section of the fourth picture; The eighth picture is an enlarged diagram of circle D in the seventh picture; The ninth figure is a schematic diagram of the C-C section of the fourth figure; and The tenth picture is an enlarged diagram of circle E in the ninth picture.

112:Outer side

113:Center channel

114: Radiation trench

3: Waterproof sheet

S3: concave space

D1:Thickness direction

D2: Radial

Claims (5)

An electronic device casing with a waterproof and pressure-relieving structure, including: a casing body that surrounds an internal space and has an inner side and an outer side facing and away from the internal space respectively, and are opened along a thickness direction There is a central channel that runs through the inner side and the outer side, and a plurality of radiation grooves radiate outward from the central channel and are exposed on the outer side. The casing body also has an inner concave space, and the inner concave space It is formed by taking the central channel as the center and shrinking from the outer side toward the internal space, and the concave space partially overlaps and intersects with the central channel and the radiation grooves; a waterproof and breathable membrane is disposed inside the inner space. The side is used to close the central channel to separate the internal space and the central channel; and a waterproof sheet is provided on the outer side and fixed in the recessed space so that the surface of the waterproof sheet is in contact with the outer side. The waterproof sheet is used to cover the central channel and expose the radiation grooves at least partially to the outer side; wherein, when the internal pressure of one of the gases in the internal space is greater than the one outside the casing body When the external air pressure increases, part of the air system is discharged from the internal space through the waterproof and breathable membrane, the central channel and the radiation grooves in order to reduce the internal air pressure. The electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the casing body also has a convex ring structure, and the convex ring structure is centered on the central channel and faces from the inner side to the inner side. The inner space protrudes to form a breathable membrane installation groove that connects the internal space and the central channel, and the waterproof breathable membrane is fixedly installed in the breathable membrane installation groove. The electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the waterproof thin plate is bonded and fixed to the recessed space. The electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the radiation grooves respectively extend from the central channel along a radial direction perpendicular to the thickness direction to the outside of the waterproof sheet, thereby partially Exposed on the outer side. The electronic device casing with a waterproof pressure relief structure as described in claim 1, wherein the radiation grooves are evenly distributed outwards with the central channel as the center.

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