CN215410176U - Sealing device - Google Patents

Abstract

The utility model relates to a sealing device which comprises a shell, wherein the shell is provided with a closed cavity and an abutting surface, the shell comprises an air through column and a liquid isolating assembly, the air through column is convexly arranged on the abutting surface, an air hole communicated with the closed cavity is formed in the air through column, and the liquid isolating assembly is arranged around the air through column. And the cover body is provided with a containing cavity for containing the liquid isolating assembly, the cover body is provided with a sealing surface which is abutted against the abutting surface, and the sealing surface is sunken to form a drainage groove which is communicated with the containing cavity and the outside. So can guarantee that the closed chamber has fine liquid proof ventilative function to saved the setting of extra spare parts such as sealing washer, also improved whole sealing device's assembly efficiency. The liquid isolating component has a simple structure and relatively low manufacturing cost, and can effectively reduce the cost of the whole sealing device.

Description

Sealing device

Technical Field

The utility model relates to the technical field of mechanical tools, in particular to a sealing device.

Background

For the shell with the closed cavity, the closed cavity needs to have a waterproof and breathable function, namely, outside liquid drops and dust are prevented from entering the closed cavity, meanwhile, the closed cavity is communicated with the outside, the balance and consistency of the air pressure in the closed cavity and the outside atmospheric pressure are guaranteed, and the shell is prevented from being damaged due to overhigh air pressure in the closed cavity. With conventional designs, a membrane-type breather valve having a waterproof breather membrane that inhibits the passage of liquids and solids but allows the passage of gases is typically provided on the housing, with a sealing ring disposed between the membrane-type breather valve and the housing to prevent water. However, the design results in relatively more parts, which affects the installation efficiency; the sealing ring is easy to age and lose the waterproof function, so that liquid can enter the closed cavity; meanwhile, the cost of the waterproof breathable film is relatively high, and when the film type breathable valve is used in a severe cold area, the ice blocks covering the waterproof breathable film can cause the waterproof breathable film to lose the breathable function, so that the breathable function of the closed cavity is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of how to improve the assembly efficiency and reduce the manufacturing cost on the basis of ensuring the liquid-proof and air-permeable performance.

A sealing device, comprising:

the device comprises a shell, a liquid separation component and a liquid storage component, wherein a closed cavity is formed in the shell, the shell is provided with a butting surface, the shell comprises an air ventilation column and the liquid separation component, the air ventilation column is convexly arranged on the butting surface, an air vent communicated with the closed cavity is formed in the air ventilation column, and the liquid separation component is arranged around the air ventilation column; and

the cover body is provided with a containing cavity for containing the liquid isolating assembly, the cover body is provided with a sealing surface which is abutted against the abutting surface, and the sealing surface is sunken to form a water drainage groove which is communicated with the containing cavity and the outside.

In one of them embodiment, the liquid separation subassembly includes that first partition strip, second partition strip and third partition strip, first partition strip with the second partition strip is relative the third partition strip is closer to water drainage tank, first partition strip with the second partition strip interval sets up and connects respectively the both ends of third partition strip, the post of ventilating is located the enclosure that first partition strip, second partition strip and third partition strip enclose establishes the space in.

In one embodiment, the third partition strip includes two bent portions connected at an included angle, first ends of the two bent portions are connected to each other, and second ends of the two bent portions are closer to the drainage groove than to the first ends.

In one embodiment, the liquid isolating assembly further comprises a fourth partition strip and a fifth partition strip which extend towards the enclosed space and are in non-contact with each other, a fixed end of the fourth partition strip is connected with the first partition strip, and a free end of the fourth partition strip is closer to the drainage groove than the fixed end of the fourth partition strip; the fixed end of the fifth partition strip is connected with the second partition strip, and the free end of the fifth partition strip is closer to the drainage groove than the fixed end of the fifth partition strip; and the free end of the fourth partition strip falls on the fifth partition strip along the orthographic projection of the first partition strip in the length direction.

In one embodiment, the number of the fourth partition strips is multiple, and multiple fourth partition strips are arranged at intervals along the length direction of the first partition strip; the quantity of fifth partition strip is a plurality of, and is a plurality of the fifth partition strip is followed the length direction interval setting of second partition strip.

In one embodiment, gaps exist among the cover body, the first partition strip, the second partition strip and the third partition strip.

In one embodiment, the liquid barrier assembly further comprises two bending parts positioned in the enclosed space, fixed ends of the two bending parts are connected with each other, and free ends of the two bending parts are closer to the drainage groove relative to the fixed ends; at least part the portion of bending is located the third cuts off the strip with in the space between the post ventilates, the lid still including being located the liquid blocking strip of holding intracavity, at least part the liquid blocking strip is located bend the portion with between the third cuts off the strip.

In one embodiment, the cover further has a lateral surface and an outer surface, the outer surface is spaced from the sealing surface along the thickness direction of the cover, the lateral surface is connected between the sealing surface and the outer surface, and the lateral surface decreases in cross-sectional dimension along the direction from the sealing surface to the outer surface.

In one embodiment, the cover is screwed to the housing.

In one embodiment, at least one of the following schemes is further included:

the central axis of the vent column and the central axis of the vent hole are both arranged perpendicular to the abutting surface;

the shell is an integrally formed shell;

the liquid separation component has a larger protruding length relative to the abutting surface than the ventilation column.

One technical effect of one embodiment of the utility model is that: in view of the barrier effect of liquid-proof subassembly for the liquid that gets into the holding intracavity can follow the water drainage tank and flow out the holding chamber smoothly, prevents that liquid from gathering near the post of ventilating for a long time and oozing into the air vent and get into in the closed chamber, thereby improves the liquid-proof performance in closed chamber. Meanwhile, the external gas can enter the closed cavity through the drainage channel, the accommodating cavity and the vent hole in sequence, and the air pressure in the closed cavity is ensured to be always consistent with the external atmospheric pressure. And the arrangement of additional parts such as a sealing ring and the like is omitted, the defect that the liquid isolating effect is weakened due to the aging of the sealing ring is avoided, and the assembly efficiency of the whole sealing device is also improved. The liquid isolating component has a simple structure and relatively low manufacturing cost, and can effectively reduce the cost of the whole sealing device.

Drawings

Fig. 1 is a schematic perspective view of a sealing device according to an embodiment;

FIG. 2 is an exploded view of the sealing device of FIG. 1;

FIG. 3 is a schematic perspective cross-sectional view of a first example of the sealing device of FIG. 1;

FIG. 4 is a schematic perspective cross-sectional view of a second example of the sealing device of FIG. 1;

FIG. 5 is a schematic plan sectional view corresponding to FIG. 4;

fig. 6 is a schematic perspective view of a cover of the sealing device shown in fig. 1.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1, 2 and 3, a sealing device 10 according to an embodiment of the present invention includes a housing 200 and a cover 100. The cover 100 is disposed on the housing 200, and the cover 100 is detachably connected to the housing 200, for example, the cover 100 and the housing 200 can be connected by screws, or the cover 100 and the housing 200 can be connected by fasteners.

Referring to fig. 2, 3 and 6, in some embodiments, the cover 100 is provided with a receiving cavity 110, and the receiving cavity 110 may be an open cavity. The cover body 100 has a sealing surface 120, an outer surface 140 and a side circumferential surface 130, the sealing surface 120 and the outer surface 140 are spaced apart from each other in a thickness direction of the cover body 100, the sealing surface 120 and the outer surface 140 may be two surfaces in the thickness direction of the cover body 100, and the receiving cavity 110 may be formed by a portion of the sealing surface 120 being recessed toward the outer surface 140 by a set depth. The side circumferential surface 130 is a closed annular surface, and the side circumferential surface 130 is connected between the closed surface 120 and the outer surface 140 such that an upper end of the side circumferential surface 130 is disposed around the periphery of the outer surface 140 and a lower end of the side circumferential surface 130 is disposed around the periphery of the closed surface 120. In the direction of the closing surface 120 toward the outer surface 140, the cross-sectional dimension of the side peripheral surface 130 is reduced, that is, the side peripheral surface 130 is disposed non-perpendicular to the abutting surface 210 and inclined at a certain angle to the abutting surface 210, so that the whole cover body 100 is substantially in a table-shaped structure, for example, the cover body 100 may be substantially in a frustum shape.

When the cover 100 is fixed on the housing 200, the sealing surface 120 of the cover 100 and the abutting surface 210 of the housing 200 have a reasonable abutting force to abut against each other, so as to improve the flow resistance of the liquid entering the accommodating cavity 110 from the gap between the sealing surface 120 and the abutting surface 210, thereby reducing the possibility of the external liquid flowing into the accommodating cavity 110, and finally improving the sealing performance of the cover 100. The closing surface 120 is concavely formed with a drainage groove 121, and the drainage groove 121 penetrates through the side circumferential surface 130, so that the drainage groove 121 simultaneously communicates with the accommodating cavity 110 and the outside, and it is ensured that the liquid in the accommodating cavity 110 can be discharged to the outside from the drainage groove 121.

Referring to fig. 2, 3 and 4, in some embodiments, a closed cavity 240 is formed in the housing 200, and the housing 200 has an abutting surface 210, and the abutting surface 210 may be a plane. The housing 200 includes a vent column 220 and a liquid barrier assembly 230, and both the vent column 220 and the liquid barrier assembly 230 may be integrally connected with the abutting surface 210, for example, the entire housing 200 may be integrally formed by injection molding. One end of each of the vent column 220 and the liquid-blocking component 230 is fixed on the abutting surface 210, and the other end of each of the vent column 220 and the liquid-blocking component 230 protrudes a certain length relative to the abutting surface 210 along the thickness direction of the shell 200. in short, the vent column 220 and the liquid-blocking component 230 are protruded on the abutting surface 210. The venting post 220 protrudes a first length relative to the abutting surface 210, and the liquid barrier 230 protrudes a second length relative to the abutting surface 210, where the second length may be greater than the first length. I.e., the liquid barrier 230 protrudes a greater length relative to the abutment surface 210 than the vent post 220. When the cover 100 is fixed on the housing 200, the liquid-proof assembly 230 and the air-through column 220 are both accommodated in the accommodating cavity 110 of the cover 100.

In some embodiments, the vent columns 220 may be substantially cylindrical, but may also be prismatic, truncated-cone, or the like. The vent hole 221 is arranged in the vent column 220, the vent hole 221 is communicated with the closed cavity 240 and the accommodating cavity 110, and outside air can enter the closed cavity 240 sequentially through the drainage groove 121, the accommodating cavity 110 and the vent hole 221, so that the air pressure in the closed cavity 240 is consistent with the outside atmospheric pressure, and explosion caused by overhigh air pressure in the closed cavity 240 is prevented. The central axis of the vent pin 220 may be provided perpendicular to the contact surface 210, and the central axis of the vent hole 221 may be provided perpendicular to the contact surface 210. The number of the vent holes 221 can be four, the aperture size of the vent holes 221 can be reasonably set, so that liquid cannot enter the vent holes 221 due to the action of surface tension, external liquid is prevented from entering the closed cavity 240 through the vent holes 221, the vent holes 221 are guaranteed to have good liquid blocking performance, and the closed cavity 240 is finally guaranteed to have a good waterproof and breathable function. In order to improve the air permeability of the closed cavity 240, the number of the vent holes 221 may be increased appropriately, and in order to improve the liquid-blocking performance of the vent holes 221, the aperture of each vent hole 221 may be reduced reasonably.

Referring to fig. 4 and 5, in some embodiments, the liquid separation assembly 230 includes a first partition strip 231, a second partition strip 232, and a third partition strip 233, and the first partition strip 231, the second partition strip 232, and the third partition strip 233 are connected together to form an approximately U-shaped structure. Both the first and second partition bars 231 and 232 may be linear, and the third partition bar 233 may be bent, and both the first and second partition bars 231 and 232 are closer to the drain groove 121 than the third partition bar 233. The first partition strip 231, the second partition strip 232 and the third partition strip 233, which are connected to each other, enclose a surrounding space 237, and the vent post 220 is located in the surrounding space 237. The first and second partition bars 231 and 232 are connected to one end of the third partition bar 233 and the second partition bar 232 is connected to the other end of the third partition bar 233, so that the first and second partition bars 231 and 232 are arranged in parallel to each other at intervals.

The third partition strip 233 with a bending shape includes two bending portions 233a, the two bending portions 233a are arranged at an included angle, the included angle formed between the two bending portions 233a may be an obtuse angle, and an opening of the obtuse angle is arranged towards the drainage groove 121, that is, the third partition strip 233 is substantially in a V-shaped structure. Specifically, each of the bent portions 233a has first and second ends that are oppositely disposed, the first ends of the two bent portions 233a are connected to each other, the second ends of the two bent portions 233a are closer to the drain groove 121 than the first ends, and both the first and second blocking bars 231 and 232 are connected to the second ends of the two bent portions 233a, respectively. When the cover body 100 is mounted on the case 200, gaps of a certain width may exist between the cover body 100 and the first, second, and third partition bars 231, 232, and 233.

In some embodiments, the liquid isolating member 230 further includes a fourth partition strip 234 and a fifth partition strip 235, the fourth partition strip 234 and the fifth partition strip 235 may be located on a side of the vent column 220 close to the drain groove 121, the fourth partition strip 234 and the fifth partition strip 235 both extend toward the enclosed space 237, the fourth partition strip 234 and the fifth partition strip 235 may be both linear and maintain a non-contact relationship, such that both the fourth partition strip 234 and the fifth partition strip 235 respectively have a free end and a fixed end, the fixed end of the fourth partition strip 234 is connected to the first partition strip 231, and the free end of the fourth partition strip 234 is closer to the drain groove 121 than the fixed end of the fourth partition strip 234. A fixed end of the fifth partition strip 235 is connected to the second partition strip 232, and a free end of the fifth partition strip 235 is closer to the drain groove 121 than the fixed end of the fifth partition strip 235. The free end of the fourth partition bar 234 falls on the fifth partition bar 235 along the orthogonal projection of the length direction of the first partition bar 231, so that the fourth partition bar 234 and the fifth partition bar 235 are arranged to be similar to each other as crossing each other.

The number of the fourth partition bars 234 is plural, and the plural fourth partition bars 234 are arranged at intervals along the length direction of the first partition bar 231; the number of the fifth partition bars 235 is plural, and the plural fifth partition bars 235 are provided at intervals in the length direction of the second partition bar 232. The entire liquid separation assembly 230 is in a labyrinth-type barrier shape by making the liquid separation assembly 230 include the first partition strip 231, the second partition strip 232, the third partition strip 233, the fourth partition strip 234 and the fifth partition strip 235, and forming the connection relationship set forth above.

In some embodiments, the liquid-proof assembly 230 further includes two bending portions 236, the two bending portions 236 are both located in the enclosing space 237, the two bending portions 236 also have a fixed end and a free end, the fixed ends of the two bending portions 236 are connected to each other, and the free end of the two bending portions 236 is closer to the drainage groove 121 than the fixed end. Two portions 236 of bending are arranged at an included angle, the included angle formed between two portions 236 of bending can be an obtuse angle, the opening of the obtuse angle is arranged towards the drainage channel 121, that is, two portions 236 of bending are approximately connected to form a V-shaped structure. At least a portion of the bent portion 236 is located in the space between the third partition bar 233 and the vent pillar 220. The cover body 100 further comprises a liquid blocking strip 150, the liquid blocking strip 150 is located in the accommodating cavity 110, when the cover body 100 is installed on the casing 200, at least part of the liquid blocking strip 150 is located between the bending portion 236 and the third partition strip 233, and a gap with a certain width can exist between the liquid blocking strip 150 and the bending portion 236 and the third partition strip 233.

After the sealing device 10 is installed, the gravity direction of the sealing device 10 is the length extending direction of the first partition strip 231 and the second partition strip 232, so that the third partition strip 233 is located above the first partition strip 231 and the second partition strip 232, and the drainage channel 121 is located below the whole liquid partition assembly 230. As for a part of the liquid entering the accommodating cavity 110 from between the closing surface 120 and the abutting surface 210, under the action of its own gravity, the part of the liquid will flow along the gap between the cover body 100 and the first, second and third partition strips 231, 232 and 233 and finally flow out of the accommodating cavity 110 from the drainage groove 121, so as to prevent the liquid from gathering in the accommodating cavity 110 and diffusing into the vent hole 221 and entering the closing cavity 240. Another part of the liquid in the receiving cavity 110 will flow downward along the gap between the liquid blocking strip 150 and the bent part 236 and the third partition strip 233, and finally flow out of the receiving cavity 110 from the drainage channel 121 under the guiding action of the fourth partition strip 234 and the fifth partition strip 235.

Therefore, due to the "labyrinth" shape of the liquid-isolating component 230, the liquid entering the accommodating cavity 110 can smoothly flow out of the accommodating cavity 110, and the liquid is prevented from being gathered near the venting column 220 for a long time and from overflowing into the venting hole 221 and entering the closed cavity 240, so that the waterproof performance of the closed cavity 240 is improved. So through the hindrance effect of liquid proof subassembly 230, can prevent effectively that liquid from toward ventilating near post 220 gathering, also can make the liquid that gets into in the holding chamber 110 smoothly discharge from water drainage tank 121 simultaneously, prevent finally that liquid from overflowing to in the closed chamber 240 through air vent 221, improve the waterproof performance of closed chamber 240, simultaneously, the external gas can get into in the closed chamber 240 through water drainage tank 121, holding chamber 110 and air vent 221 in proper order, guarantee that the atmospheric pressure in the closed chamber 240 keeps unanimous with external atmospheric pressure all the time.

Further, the side peripheral surface 130 is disposed non-perpendicularly to the abutting surface 210 and is inclined at a certain angle to the abutting surface 210, so that on one hand, the liquid on the side peripheral surface 130 can slide off the side peripheral surface 130 more easily, and the liquid attached to the side peripheral surface 130 for a long time is prevented from entering the accommodating cavity 110 through a gap between the abutting surface 210 and the closing surface 120. On the other hand, when the cover body 100 is formed by injection molding, the inclined side peripheral surface 130 makes the formed cover body 100 easier to be removed from the mold, thereby improving the processing efficiency and the forming quality of the cover body 100.

The cover body 100 and the shell body 200 are fixed only by screws, so that the arrangement of additional parts such as sealing rings is omitted, the defect that the waterproof effect is weakened due to aging of the sealing rings is avoided, and the assembly efficiency of the whole sealing device 10 is improved. Moreover, the liquid isolating assembly 230 has a simple structure and relatively low manufacturing cost, and can effectively reduce the cost of the whole sealing device 10. The cover body 100 can also be suitable for different climatic environments, and the water-proof and air-permeable functions of the closed cavity 240 are prevented from being influenced by the blockage of the water discharge groove 121.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A seal assembly, comprising:

the device comprises a shell, a liquid separation component and a liquid storage component, wherein a closed cavity is formed in the shell, the shell is provided with a butting surface, the shell comprises an air ventilation column and the liquid separation component, the air ventilation column is convexly arranged on the butting surface, an air vent communicated with the closed cavity is formed in the air ventilation column, and the liquid separation component is arranged around the air ventilation column; and

the cover body is provided with a containing cavity for containing the liquid isolating assembly, the cover body is provided with a sealing surface which is abutted against the abutting surface, and the sealing surface is sunken to form a water drainage groove which is communicated with the containing cavity and the outside.

2. The sealing device of claim 1, wherein the liquid isolating assembly comprises a first partition strip, a second partition strip and a third partition strip, the first partition strip and the second partition strip are closer to the water drainage tank relative to the third partition strip, the first partition strip and the second partition strip are arranged at intervals and are respectively connected to two ends of the third partition strip, and the air vent column is located in an enclosed space surrounded by the first partition strip, the second partition strip and the third partition strip.

3. The sealing device according to claim 2, wherein the third partition strip comprises two bent portions connected at an included angle, first ends of the two bent portions are connected to each other, and second ends of the two bent portions are closer to the drainage groove than to the first end.

4. The sealing device of claim 2, wherein the liquid barrier assembly further comprises a fourth partition strip and a fifth partition strip extending toward the enclosed space and being in non-contact with each other, a fixed end of the fourth partition strip being connected to the first partition strip, and a free end of the fourth partition strip being closer to the drain groove than the fixed end of the fourth partition strip; the fixed end of the fifth partition strip is connected with the second partition strip, and the free end of the fifth partition strip is closer to the drainage groove than the fixed end of the fifth partition strip; and the free end of the fourth partition strip falls on the fifth partition strip along the orthographic projection of the first partition strip in the length direction.

5. The sealing device according to claim 4, wherein the number of the fourth partition strips is plural, and the plural fourth partition strips are arranged at intervals along the length direction of the first partition strip; the quantity of fifth partition strip is a plurality of, and is a plurality of the fifth partition strip is followed the length direction interval setting of second partition strip.

6. The sealing device of claim 2, wherein a gap exists between the cover and each of the first, second, and third partition strips.

7. The sealing device according to claim 2, wherein the liquid barrier assembly further comprises two bent portions located in the enclosed space, fixed ends of the two bent portions are connected with each other, and free ends of the two bent portions are closer to the drainage groove than the fixed ends; at least part the portion of bending is located the third cuts off the strip with in the space between the post ventilates, the lid still including being located the liquid blocking strip of holding intracavity, at least part the liquid blocking strip is located bend the portion with between the third cuts off the strip.

8. The sealing device of claim 1, wherein the cover further has a lateral perimeter surface and an outer surface, the outer surface being spaced from the closure surface in a thickness direction of the cover, the lateral perimeter surface being connected between the closure surface and the outer surface, the lateral perimeter surface decreasing in cross-sectional dimension in a direction from the closure surface toward the outer surface.

9. The sealing device of claim 1, wherein the cover is screwed to the housing.

10. The sealing device of claim 1, further comprising at least one of:

the central axis of the vent column and the central axis of the vent hole are both arranged perpendicular to the abutting surface;

the shell is an integrally formed shell;

the liquid separation component has a larger protruding length relative to the abutting surface than the ventilation column.

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