High-pressure-resistant waterproof breathable assembly

Abstract

The utility model discloses a high-pressure-resistant waterproof ventilation assembly which comprises a shell, a protective cover is fixed to the upper end of the shell, and upper ventilation holes are formed in the periphery of the protective cover; the two sunken spaced ventilation hole channels are formed in the lower end of the shell, and lower ventilation holes are formed between the ventilation hole channels; the positioning columns are fixed on the protective cover, correspond to the ventilation hole channels respectively and are sleeved with springs; the sealing plug is mounted at the lower end of the spring and pressed to the ventilation hole channel; and the PTFE breathable film is welded on the upper side of the lower breathable hole. According to the utility model, through the PTFE breathable film, the waterproof, dustproof, breathable and pressure-relief effects are realized; meanwhile, when the pressure in the product space is instantaneously increased, the sealing plug is matched with the spring to quickly open the assembly, the pressure is instantaneously released, and the advantages of quickly releasing the pressure and ensuring safety are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waterproof and breathable components, and particularly relates to a high-pressure-resistant waterproof and breathable component. Background Art

[0002] For the shells of electronic and electrical equipment such as outdoor electrical control boxes, energy storage battery boxes, and power battery packs of new energy vehicles, the waterproof and dustproof protection levels generally require to reach above IP67 of the national standard GB 4208-2008 "Degree of Protection Provided by Enclosures (IP Code)". Therefore, sealing must be carried out. However, when working, electronic and electrical components will generate heat, causing the air in the sealed container to expand due to the temperature rise. If it cannot be discharged in time, the pressure inside the box will continue to increase. Especially for sealed boxes installed with components such as batteries and large capacitors, or containers storing flammable and explosive chemicals, when the batteries, capacitors or the chemicals inside undergo thermal runaway, high temperature and high pressure will be generated. Once exposed to water and moisture, huge pressure will be generated inside the box, posing a risk of violent explosion. Therefore, a high-pressure-resistant waterproof and breathable valve is needed to prevent blasting and reduce the damage caused by the explosion.

[0003] The existing waterproof and breathable is generally designed with a polytetrafluoroethylene membrane. The waterproof and breathable effect is average and it does not have high-pressure resistance characteristics. Therefore, in some dangerous and special situations, the safety will be greatly reduced, resulting in losses.

[0004] Therefore, there is an urgent need for a high-pressure-resistant waterproof and breathable component with a simple structure, convenient use and high safety factor at present. Summary of the Utility Model

[0005] In view of this, the technical problem to be solved by the utility model is to provide a high-pressure-resistant waterproof and breathable component to avoid the troubles of the previous waterproof and breathable components lacking high-pressure resistance, weak explosion protection and low safety factor.

[0006] To solve the above technical problem, the utility model discloses a high-pressure-resistant waterproof and breathable component, including:

[0007] A housing, with a protective cover fixed at the upper end of the housing, and upper ventilation holes are arranged around the protective cover;

[0008] Two spaced ventilation hole channels arranged in a sunken manner at the lower end of the housing, and lower ventilation holes are arranged between the ventilation hole channels;

[0009] Positioning columns fixed to the protective cover and corresponding to the ventilation hole channels respectively, and springs are sleeved on the positioning columns;

[0010] A sealing plug installed at the lower end of the spring and pressed against the ventilation hole channel; and

[0011] A PTFE ventilation membrane welded above the lower ventilation hole.

[0012] According to an embodiment of the present utility model, a plurality of strip-shaped holes are provided on the lower side of the above-mentioned air-permeable channel.

[0013] According to an embodiment of the present utility model, the lower end of the above-mentioned sealing plug has a taper, the upper end is limited by a spring through a groove, and the periphery presses and covers the edge of the air-permeable channel through a crimping edge. A circular arc-shaped protrusion is provided on the edge of the air-permeable channel to abut against the sealing plug.

[0014] According to an embodiment of the present utility model, the above-mentioned sealing plug presses and covers a PTFE air-permeable membrane.

[0015] According to an embodiment of the present utility model, bolt mounting holes are provided at both ends of the bottom of the above-mentioned housing, and a sealing ring is sleeved outside the air-permeable channel.

[0016] Compared with the prior art, the present utility model can obtain the following technical effects:

[0017] 1. When the normal pressure in the product space increases slowly, air can be vented and pressure can be relieved through the PTFE air-permeable membrane (waterproof, dustproof, air-permeable, and reagent-resistant).

[0018] 2. When the pressure inside the product space increases instantaneously, the assembly can be quickly opened through the cooperation of the sealing plug and the spring, and the pressure can be released instantaneously to achieve rapid pressure relief and ensure safety.

[0019] 3. After the pressure in the product space is released to the normal safety value, the spring cooperates with the sealing plug to return to the original position and seal.

[0020] 4. The high-pressure-resistant waterproof and air-permeable component can be reused.

[0021] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned technical effects simultaneously. Description of the Drawings

[0022] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 is the internal view of the high-pressure-resistant waterproof and air-permeable component of the embodiment of the present utility model;

[0024] Figure 2 is the side view of the high-pressure-resistant waterproof and air-permeable component of the embodiment of the present utility model;

[0025] Figure 3 is the bottom view of the high-pressure-resistant waterproof and air-permeable component of the embodiment of the present utility model.

[0026] Reference Signs

[0027] Housing 10, protective cover 20, upper ventilation holes 21, ventilation hole channels 30, strip-shaped holes 31, lower ventilation holes 40, positioning posts 50, springs 60, sealing plugs 70, PTFE ventilation membranes 80, bolt mounting holes 90, sealing rings 91. Detailed implementation mode

[0028] The following will cooperate with the drawings and embodiments to elaborate in detail on the implementation mode of the present utility model, so as to fully understand how the present utility model applies technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0029] Please refer to Figures 1 to 3 , Figure 1 which is the internal view of the high-pressure-resistant and waterproof ventilation component of the embodiment of the present utility model; Figure 2 which is the side view of the high-pressure-resistant and waterproof ventilation component of the embodiment of the present utility model; Figure 3 which is the bottom view of the high-pressure-resistant and waterproof ventilation component of the embodiment of the present utility model.

[0030] As shown in the figure, a high-pressure-resistant and waterproof ventilation component includes: a housing 10, a protective cover 20 is fixed at the upper end of the housing 10, and upper ventilation holes 21 are provided around the protective cover 20; two spaced ventilation hole channels 30 which are arranged in a sunken manner at the lower end of the housing 10, and a lower ventilation hole 40 is arranged between the ventilation hole channels 30; positioning posts 50 which are fixed to the protective cover 20 and respectively correspond to the ventilation hole channels 30, and springs 60 are sleeved on the positioning posts 50; a sealing plug 70 which is installed at the lower end of the spring 60 and pressed against the ventilation hole channels 30; and a PTFE ventilation membrane 80 which is welded to the upper side of the lower ventilation hole 40.

[0031] In an implementation mode of the present utility model, the housing 10 and the protective cover 20 are fixedly connected to form a cavity inside. At the same time, ventilation hole channels 30 and a lower ventilation hole 40 are provided on the lower side of the housing 10, and upper ventilation holes 21 are provided on the upper side of the protective cover 20 to complete ventilation. Springs 60 are installed through the positioning posts 50 at the positions corresponding to the ventilation hole channels 30 on the protective cover 20, which are used to elastically press against the sealing plugs 70 to seal the ventilation hole channels 30. The lower ventilation holes 40 are sealed by using PTFE ventilation membranes 80. The PTFE ventilation membranes 80 are polytetrafluoroethylene membranes, which have excellent waterproof and air permeability. When the normal pressure in the product space slowly increases, they perform air permeability and pressure relief, and are highly practical. The sealing plugs 70 cooperated with the springs 60 are used to quickly open the component when the pressure inside the product space suddenly increases, and instantly release the pressure, achieving the effect of quickly relieving pressure to ensure safety, having high high-pressure resistance and high safety factor.

[0032] Preferably, multiple strip-shaped holes 31 are provided on the lower side of the ventilation hole channels 30, which can be set to three and spaced apart, and are used to receive instantaneous air pressure or water pressure, which is convenient and practical.

[0033] The lower end of the sealing plug 70 of the present utility model has a taper, and the upper end is limited by a spring 60 through a groove, with good stability. And the periphery presses and covers the edge of the air permeable channel 30, and an arc-shaped protrusion is provided at the edge of the air permeable channel 30 to abut against the sealing plug 70, reducing the contact area and facilitating separation.

[0034] Furthermore, the sealing plug 70 presses and covers the edge of the PTFE air permeable membrane 80, with sufficient contact to ensure the welding strength of its edge.

[0035] In addition, bolt mounting holes 90 are provided at both ends of the bottom of the housing 10, facilitating the fixing of the entire assembly for installation. And an outer ring of the air permeable channel 30 is sleeved with a sealing ring 91, that is, it surrounds the edge of the air permeable channel 30 of the housing 10, and can fully press against the installation part during installation contact to ensure the sealing effect.

[0036] To sum up, the present utility model realizes waterproofing, dustproofing, air permeability and pressure relief through the PTFE air permeable membrane 80; at the same time, when the pressure inside the product space increases instantaneously, the sealing plug 70 cooperates with the spring 60 to quickly open the assembly and instantaneously release the pressure, achieving the advantages of rapid pressure relief to ensure safety.

[0037] The above description shows and describes several preferred embodiments of the present utility model. However, as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A high pressure-resistant waterproof breathable component, characterized in that: include: A housing, wherein a protective cover is fixed to the upper end of the housing, and upper air holes are arranged around the protective cover; Two spaced apart air vents are provided at the lower end of the shell and are sunken, and a lower air vent is provided between the air vents; Positioning posts fixed to the protective cover and corresponding to the ventilation holes respectively, wherein the positioning posts are sleeved with springs; A sealing plug installed at the lower end of the spring and pressed into the vent hole; and A PTFE breathable membrane is welded to the upper side of the lower breathable hole.

2. The high pressure-resistant waterproof breathable component according to claim 1, characterized in that: A plurality of strip-shaped holes are arranged on the lower side of the ventilation channel.

3. The high pressure-resistant waterproof breathable component according to claim 1, characterized in that: The lower end of the sealing plug has a taper, the upper end limits the spring through a groove, and the edge of the air vent is pressed around by a pressing edge. The edge of the air vent is provided with a circle of arc-shaped protrusions to stop the sealing plug.

4. The high pressure-resistant waterproof breathable component according to claim 3, characterized in that: The sealing plug is pressed against the PTFE breathable membrane.

5. The high pressure-resistant waterproof breathable component according to claim 1, characterized in that: The two ends of the bottom of the shell are provided with bolt mounting holes, and the outer ring of the air-permeable channel is sleeved with a sealing ring.

Images