Moisture absorption valve and vehicle lamp assembly

Abstract

The utility model relates to the technical field of moisture absorption valves, in particular to a moisture absorption valve and a vehicle lamp assembly. The moisture absorption valve comprises a valve body, a through first ventilation channel is formed in the valve body, a containing cavity with an opening is formed in one end of the valve body, a moisture absorbent is arranged in the containing cavity, and a first inlet and outlet of the first ventilation channel is close to the opening; the end, away from the opening, of the valve body is provided with a second ventilation channel, a first port of the second ventilation channel communicates with the first ventilation channel, and a second port of the second ventilation channel communicates with the outside. The second ventilation channel comprises a main channel and a branch backflow channel with the head end and the tail end communicating with the main channel, and connecting ports of the head end and the tail end of the branch backflow channel and the main channel face the second port. According to the moisture absorption valve, through the unique ventilation channel design, internal and external air pressure balance is effectively controlled, meanwhile, external moisture entering a car lamp is reduced to the maximum extent, the problems of fogging and condensation of the car lamp are solved, and the service life of the moisture absorption valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of moisture absorption valves, and particularly relates to a moisture absorption valve and a vehicle lamp assembly.

Background Art

[0002] Vehicle lamps are one of the important components of an automobile. They not only provide line of sight guarantee for the driver at night or under bad weather conditions, but also are an important element in the vehicle exterior design. However, problems such as fogging and condensation often occur during the use of vehicle lamps. These problems not only affect the lighting effect of the vehicle lamps, but may also damage the internal circuit of the vehicle lamps and shorten the service life of the vehicle lamps.

[0003] To solve the problems of fogging and condensation of vehicle lamps, the existing method is to provide a breathing valve with a moisture absorbent to absorb water vapor, thereby solving or alleviating the fogging and condensation phenomena of vehicle lamps; however, in order to keep the air pressure inside and outside the vehicle lamp stable, the existing valve body needs to be provided with a ventilation channel connecting the vehicle lamp and the outside world, resulting in easy entry of external moisture into the vehicle lamp interior, exacerbating the fogging and condensation problems, and further greatly reducing the service life of the moisture absorbent.

Content of the Utility Model

[0004] To solve the technical problem that the existing moisture absorption valve has too low service life due to maintaining ventilation balance, the utility model provides a moisture absorption valve and a vehicle lamp assembly.

[0005] The solution of the utility model to solve the technical problem is to provide a moisture absorption valve, including a valve body. A through first ventilation channel is provided on the valve body. One end of the valve body is provided with a containing cavity with an opening. A moisture absorbent is provided in the containing cavity. The first inlet and outlet of the first ventilation channel are arranged close to the opening. The other end of the valve body away from the opening is provided with a second ventilation channel. The first port of the second ventilation channel communicates with the first ventilation channel, and the second port of the second ventilation channel communicates with the outside. The second ventilation channel includes a main channel and a bifurcated return channel with both the head and the tail communicating with the main channel. The connection ports of the head and the tail of the bifurcated return channel with the main channel are both arranged towards the second port.

[0006] Preferably, the moisture absorption valve further includes a first ventilation component, and the first ventilation component is arranged at one end of the valve body to cover the opening.

[0007] Preferably, the first ventilation component includes a cover body and a first ventilation membrane arranged on the cover body. The cover body is provided with a first ventilation hole corresponding to the containing cavity, and the cover body is provided with a second ventilation hole corresponding to the first ventilation channel. The first ventilation membrane covers the first ventilation hole, and the first ventilation membrane is provided with an avoidance hole corresponding to the second ventilation hole.

[0008] Preferably, the moisture absorption valve further includes a second air-permeable component. An installation cavity communicating with the outside is provided on the valve body. The second air-permeable component is arranged in the installation cavity and covers the installation cavity. The second air passage is located between the second air-permeable component and the inner wall of the installation cavity. The second port communicates with the outside through the second air-permeable component.

[0009] Preferably, the second air passage is a ventilation groove provided on the bottom surface of the installation cavity. The second air-permeable component includes a sealing component. The sealing component covers the installation cavity and seals the top of the ventilation groove. The sealing component is provided with a notch communicating with the outside corresponding to the second port.

[0010] Preferably, the sealing component includes a silica gel sheet and a pressing plate. An installation structure spaced from the ventilation groove is provided on the bottom surface of the installation cavity. Avoidance holes corresponding to the installation structure are provided on the silica gel sheet. Matching holes corresponding to the installation structure are provided on the pressing plate. The installation structure passes through the avoidance holes and is connected to the matching holes. The pressing plate presses the silica gel sheet against the bottom surface of the installation cavity. The second port is located on the outer edge of the installation cavity. A first notch corresponding to the second port is provided on the edge of the silica gel sheet. A second notch corresponding to the first notch is provided on the edge of the pressing plate. The second port, the first notch, and the second notch are sequentially communicated.

[0011] Preferably, the second air-permeable component further includes a second air-permeable membrane. The second air-permeable membrane is arranged on the valve body and covers the installation cavity. A gap is provided between the second air-permeable membrane and the sealing component. The notch communicates the ventilation groove and the gap. The gap exchanges gas with the outside through the second air-permeable membrane.

[0012] Preferably, a partition plate is provided in the accommodation cavity. The partition plate divides the accommodation cavity into a first moisture absorption cavity and a second moisture absorption cavity.

[0013] The moisture absorption efficiency of the moisture absorbent placed in the first moisture absorption cavity is greater than that of the moisture absorbent placed in the second moisture absorption cavity; and / or, the total area of the first air holes corresponding to the first moisture absorption cavity is greater than the total area of the first air holes corresponding to the second moisture absorption cavity.

[0014] Preferably, a support column is provided in the accommodation cavity. The first air passage is arranged in the support column. The partition plate connects the support column and the inner side wall of the accommodation cavity to realize the partition of the accommodation cavity.

[0015] Another solution for the present invention to solve the technical problem is to provide a vehicle lamp assembly, including a vehicle lamp body and the moisture absorption valve as described above provided on the vehicle lamp.

[0016] Compared with the prior art, the utility model provides a moisture absorption valve and a headlight assembly, which have the following advantages:

[0017] 1. A moisture absorption valve provided by an embodiment of the utility model effectively controls the air pressure balance inside and outside the headlight through a unique breathable channel design, while minimizing the entry of external moisture into the headlight, thereby effectively solving the problems of fogging and condensation in the headlight and prolonging the service life of the desiccant and the moisture absorption valve; specifically, by arranging a desiccant in a containing cavity with an opening, the moisture absorption valve can effectively absorb the moisture generated inside the headlight; through the cooperation of the first breathable channel and the second breathable channel, gas interaction on both sides inside and outside the valve body is realized, that is, when the moisture absorption valve is installed on the headlight, the air pressure inside and outside the headlight is kept stable through the cooperation of the first breathable channel and the second breathable channel, where the first breathable channel is used to connect the inside of the headlight and the second breathable channel; at the same time, the second breathable channel is divided into a main channel and a bifurcated return channel, increasing the complexity of the air flow path, which helps to slow down the entry speed of external moisture, and at the same time realizes the air pressure balance inside and outside the headlight through the second port; by designing a bifurcated return channel with both ends connected to the main channel and the connection ports facing the second port, the length of the air flow path can be increased, further reducing the penetration rate of external moisture, and at the same time helping to reduce air flow conflicts and achieve better air flow guidance; and by arranging the connection ports of the head and tail ends of the bifurcated return channel to the main channel to face the second port, it can be realized that the bifurcated return channel only takes effect on the external air flow entering the second breathable channel from the second port, and does not take effect on the internal air flow entering the second breathable channel from the first port.

[0018] 2. The moisture absorption valve of the embodiment of the utility model further enhances the sealing performance of the moisture absorption valve by adding a first breathable component, effectively controls the direction of air flow, reduces the entry of moisture, and thereby prolongs the service life of the desiccant. The first breathable component is arranged at one end of the valve body to cover the opening, which can effectively control the direction of air flow in and out, helps to keep the inside of the headlight dry, and at the same time reduces the risk of moisture directly entering from the outside.

[0019] 3. The first air-permeable component of the embodiment of the present utility model includes a cover body and a first air-permeable membrane. This design ensures good air permeability of the moisture absorption valve while ensuring good sealing performance. In particular, the cover body can effectively prevent the moisture absorbent from detaching from the accommodating cavity through the opening; the cover body is provided with a first air-permeable hole corresponding to the accommodating cavity and a second air-permeable hole corresponding to the first air-permeable channel. The first air-permeable membrane covers the first air-permeable hole, and the first air-permeable membrane is provided with an avoidance hole corresponding to the second air-permeable hole, which can effectively prevent impurities from entering the headlight interior; the first air-permeable membrane is provided with an avoidance hole corresponding to the second air-permeable hole, so that the first air-permeable membrane does not block the second air-permeable hole, ensuring that air can flow smoothly into or out of the first air-permeable channel, thereby achieving the balance of air pressure inside and outside the headlight. Such a design not only ensures air permeability but also avoids the obstruction of the first air-permeable membrane to the air flow, contributing to the smooth flow of the air flow.

[0020] 4. By adding a second air-permeable component, the moisture absorption valve of the embodiment of the present utility model further enhances the air permeability of the moisture absorption valve while ensuring the balance of air pressure inside and outside the headlight. The second air-permeable component is arranged in the installation cavity and covers the installation cavity. The second air-permeable channel is located between the second air-permeable component and the inner wall of the installation cavity. The second port communicates with the outside through the second air-permeable component, which can effectively control the inflow and outflow of air, and at the same time realizes gas exchange with the outside through the second air-permeable channel, contributing to maintaining the balance of air pressure inside and outside the headlight and reducing the entry of moisture.

[0021] 5. The second air-permeable channel of the embodiment of the present utility model is an air-permeable groove arranged on the bottom surface of the installation cavity, and the design that the sealing component covers the installation cavity and seals the top of the air-permeable groove further enhances the air permeability of the moisture absorption valve while ensuring good sealing performance. The sealing component is provided with a notch communicating with the outside corresponding to the second port, which can effectively control the inflow and outflow of air, and at the same time realizes the balance of air pressure inside and outside the headlight through the air-permeable groove, contributing to reducing the entry of moisture.

[0022] 6. The specific structure of the sealing component of the embodiment of the present utility model ensures good air permeability while improving the sealing performance of the moisture absorption valve. Specifically, the silica gel sheet is provided with an avoidance hole corresponding to the installation structure, the pressing plate is provided with a matching hole corresponding to the installation structure, the installation structure passes through the avoidance hole and is connected with the matching hole, and the pressing plate presses the silica gel sheet against the bottom surface of the installation cavity, which can ensure good sealing effect, avoid air leakage at the top of the air-permeable groove, and reduce the entry of moisture; by the second port being located at the outer edge of the installation cavity, the edge of the silica gel sheet is provided with a first notch corresponding to the second port, and the edge of the pressing plate is provided with a second notch corresponding to the first notch. The second port, the first notch and the second notch are sequentially communicated, which can ensure the smooth flow of air and reduce the entry of moisture at the same time.

[0023] 7. The second air-permeable component of the embodiment of the present utility model further includes the design of a second air-permeable membrane, which further improves the air-permeable performance of the moisture absorption valve and ensures a good sealing effect at the same time. The second air-permeable membrane is arranged on the valve body and covers the installation cavity, with a gap provided between it and the sealing component. The notch communicates the air-permeable groove and the gap, and the gap realizes gas exchange with the outside through the second air-permeable membrane, which can ensure the smooth flow of air and reduce the entry of moisture at the same time.

[0024] 8. By arranging a partition plate in the accommodation cavity of the moisture absorption valve of the embodiment of the present utility model, the accommodation cavity is divided into a first moisture absorption cavity and a second moisture absorption cavity, which further enhances the moisture absorption performance of the moisture absorption valve and realizes the hierarchical arrangement of the moisture absorbent at the same time. The moisture absorption efficiency of the moisture absorbent placed in the first moisture absorption cavity is higher than that of the moisture absorbent placed in the second moisture absorption cavity; and / or, the total area of the first air-permeable holes corresponding to the first moisture absorption cavity is larger than the total area of the first air-permeable holes corresponding to the second moisture absorption cavity; the above two designs are disclosed to set two areas with different moisture absorption efficiencies, so that moisture can be quickly absorbed while ensuring a long-term moisture absorption effect, which helps to improve the use efficiency of the moisture absorbent and extend the service life of the moisture absorption valve.

[0025] 9. By arranging support columns in the accommodation cavity of the moisture absorption valve of the embodiment of the present utility model, the structural stability of the moisture absorption valve is further improved. The first air-permeable channel is arranged in the support column, and the partition plate connects the support column and the inner side wall of the accommodation cavity to realize the separation of the accommodation cavity, which can ensure the smooth flow of air and enhance the structural stability of the moisture absorption valve at the same time, helping to improve the use efficiency of the moisture absorbent and extend the service life of the moisture absorption valve.

[0026] 10. The embodiment of the present utility model further provides a vehicle lamp assembly, which includes a vehicle lamp body and the above-mentioned moisture absorption valve arranged on the vehicle lamp, and has the same beneficial effects as the above moisture absorption valve, which will not be elaborated here.

Description of the Drawings

[0027] Figure 1 is an exploded view of a moisture absorption valve provided by an embodiment of the present utility model Figure 1 .

[0028] Figure 2 is a structural schematic diagram of the valve body of a moisture absorption valve provided by an embodiment of the present utility model.

[0029] Figure 3 is a cross-sectional view of a moisture absorption valve provided by an embodiment of the present utility model.

[0030] Figure 4 is an exploded view of a moisture absorption valve provided by an embodiment of the present utility model Figure 2 .

[0031] Figure 5 is an explosion diagram of a moisture absorption valve provided by an embodiment of the present utility model Figure 3 .

[0032] Figure 6 is Figure 3 an enlarged view of A in

[0033] Figure 7 is an intake air schematic diagram of a moisture absorption valve provided by an embodiment of the present utility model

[0034] Figure 8 is an exhaust air schematic diagram of a moisture absorption valve provided by an embodiment of the present utility model

[0035] Figure 9 is a schematic diagram of a vehicle lamp assembly provided by an embodiment of the present utility model

[0036] Explanation of the attached drawing reference numerals:

[0037] 100, vehicle lamp assembly; 10, moisture absorption valve; 20, vehicle lamp body;

[0038] 1, valve body; 11, accommodation cavity; 111, opening; 112, first moisture absorption cavity; 113, second moisture absorption cavity; 12, support column; 121, first ventilation channel; 1211, first inlet and outlet; 1212, second inlet and outlet; 13, second ventilation channel; 131, main channel; 1311, first port; 1312, second port; 132, bifurcated return channel; 1321, connection port; 14, installation cavity; 141, installation structure; 142, step; 15, spacer; 16, moisture absorbent; 17, mounting ring; 18, operation fin; 19, mounting buckle;

[0039] 2, first ventilation component; 21, cover body; 211, first ventilation hole; 212, second ventilation hole; 22, first ventilation membrane;

[0040] 3, second ventilation component; 31, sealing component; 311, silicone sheet; 3111, first notch; 312, pressing plate; 3112, second notch; 32, second ventilation membrane; 33, gap;

[0041] 4, sealing ring.

Detailed implementation manners

[0042] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the attached drawings and implementation examples. It should be understood that the specific implementation examples described herein are only used to explain the present utility model and are not used to limit the present utility model

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish different objects, rather than to describe a specific order.

[0044] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0045] In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0046] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.

[0047] In addition, the terms "installed", "set up", "provided with", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is also internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0048] Please combine Figures 1 to 3, the first embodiment of the present utility model provides a moisture absorption valve 10, which is applied to a vehicle lamp and is used to maintain the air pressure balance and dryness inside the vehicle lamp; the moisture absorption valve 10 includes a valve body 1, and a through first air permeation channel 121 is provided on the valve body 1. One end of the valve body 1 is provided with a receiving cavity 11 with an opening 111, a moisture absorbent 16 is arranged in the receiving cavity 11, and the first inlet and outlet 1211 of the first air permeation channel 121 is arranged close to the opening 111; the other end of the valve body 1 far from the opening 111 is provided with a second air permeation channel 13, and the first port 1311 of the second air permeation channel 13 is communicated with the first air permeation channel 121, that is, the second inlet and outlet 1212 of the first air permeation channel 121 is connected to the second air permeation channel 13, and the second port 1312 of the second air permeation channel 13 is communicated with the outside; the second air permeation channel 13 includes a main channel 131 and a bifurcated return channel 132 with both the head and the tail communicated with the main channel 131, and the connection ports 1321 of the head and the tail of the bifurcated return channel 132 with the main channel 131 are all arranged towards the second port 1312.

[0049] It can be understood that a moisture absorption valve 10 provided by an embodiment of the present utility model effectively controls the air pressure balance inside and outside the vehicle lamp through a unique air permeation channel design, and at the same time minimizes the entry of external moisture into the vehicle lamp, thereby effectively solving the problems of fogging and condensation of the vehicle lamp and prolonging the service life of the moisture absorbent 16 and the moisture absorption valve 10.

[0050] Specifically, by arranging the moisture absorbent 16 in the receiving cavity 11 with the opening 111, the moisture absorption valve 10 can effectively absorb the moisture generated inside the vehicle lamp; through the cooperation of the first air permeation channel 121 and the second air permeation channel 13, the gas interaction on both sides of the valve body 1 is realized, that is, when the moisture absorption valve 10 is installed on the vehicle lamp, the air pressure inside and outside the vehicle lamp is kept stable through the cooperation of the first air permeation channel 121 and the second air permeation channel 13, and the first air permeation channel 121 is used to connect the inside of the vehicle lamp and the second air permeation channel 13; at the same time, the second air permeation channel 13 is divided into a main channel 131 and a bifurcated return channel 132, which increases the complexity of the air flow path, helps to slow down the speed of external moisture entering, and at the same time realizes the air pressure balance inside and outside the vehicle lamp through the second port 1312; by designing the bifurcated return channel 132 with both ends connected to the main channel 131 and the connection ports 1321 facing the second port 1312, the length of the air flow path can be increased, the penetration rate of external moisture can be further reduced, and at the same time, it helps to reduce air flow conflicts and realize better air flow guidance; and by arranging the connection ports 1321 of the head and the tail of the bifurcated return channel 132 with the main channel 131 towards the second port 1312, it can be realized that the bifurcated return channel 132 only takes effect on the external air flow entering the second air permeation channel 13 from the second port 1312, and does not take effect on the internal air flow entering the second air permeation channel 13 from the first port 1311.

[0051] As a feasible implementation manner, the valve body 1 is in a cylindrical device, an opening 111 is formed at one end face of the cylinder, and a second air permeable channel 13 is arranged at the other end face of the cylinder.

[0052] As a feasible implementation manner, an installation ring 17 is arranged in the middle area of the circumferential outer wall of the valve body 1. A sealing ring 4 is arranged on one side of the installation ring 17 close to the opening 111. When the moisture absorption valve 10 is installed on an external vehicle lamp, the sealing ring 4 is pressed against the outer surface of the vehicle lamp through the installation ring 17, so as to ensure the seal between the moisture absorption valve 10 and the vehicle lamp.

[0053] As a feasible implementation manner, an installation buckle 19 is arranged at one end of the circumferential outer wall of the valve body 1 close to the opening 111, and the valve body 1 is clamped to an external vehicle lamp through the installation buckle 19.

[0054] As a feasible implementation manner, the number of the installation buckles 19 is multiple, and the multiple installation buckles 19 are arranged in an array around the circumferential outer wall of the valve body 1.

[0055] As a feasible implementation manner, an operation fin 18 is arranged at one end of the circumferential outer wall of the valve body 1 far from the opening 111.

[0056] As a feasible implementation manner, the number of the operation fins 18 is multiple, and the multiple operation fins 18 are arranged in an array around the circumferential outer wall of the valve body 1.

[0057] As a feasible implementation manner, one end of the operation fin 18 protrudes relative to the end face of the valve body 1 where the accommodation cavity 11 is located, and the protruding direction is the direction away from the opening 111 along the axial direction of the valve body 1.

[0058] Please continue to refer to Figure 1 , as a feasible implementation manner, the moisture absorption valve 10 further includes a first air permeable component 2, and the first air permeable component 2 is arranged at one end of the valve body 1 to cover the opening 111.

[0059] It can be understood that by adding the first air permeable component 2, the moisture absorption valve 10 of the embodiment of the present utility model further enhances the sealing performance of the moisture absorption valve 10, effectively controls the direction of the air flow, reduces the entry of moisture, and thus prolongs the service life of the moisture absorbent 16. The first air permeable component 2 is arranged at one end of the valve body 1 to cover the opening 111, which can effectively control the direction of the air flow in and out, helps to keep the inside of the vehicle lamp dry, and at the same time reduces the risk of moisture directly entering from the outside.

[0060] Please refer to in combination with Figure 1 and Figure 4, As a feasible implementation manner, the first air-permeable component 2 includes a cover body 21 and a first air-permeable membrane 22 disposed on the cover body 21. The cover body 21 is provided with a first air-permeable hole 211 corresponding to the accommodation cavity 11, and the cover body 21 is provided with a second air-permeable hole 212 corresponding to the first air-permeable channel 121. The first air-permeable membrane 22 covers the first air-permeable hole 211, and the first air-permeable membrane 22 is provided with an avoidance hole corresponding to the second air-permeable hole 212.

[0061] It can be understood that the design of the first air-permeable component 2 of the embodiment of the present utility model including the cover body 21 and the first air-permeable membrane 22 ensures both the air-permeable performance of the moisture absorption valve 10 and good sealing performance. In particular, the cover body 21 can effectively prevent the moisture absorbent 16 from detaching from the accommodation cavity 11 at the opening 111; the cover body 21 is provided with a first air-permeable hole 211 corresponding to the accommodation cavity 11 and a second air-permeable hole 212 corresponding to the first air-permeable channel 121. The first air-permeable membrane 22 covers the first air-permeable hole 211, and the first air-permeable membrane 22 is provided with an avoidance hole corresponding to the second air-permeable hole 212, which can effectively prevent impurities from entering the headlight interior; the first air-permeable membrane 22 is provided with an avoidance hole corresponding to the second air-permeable hole 212, so that the first air-permeable membrane 22 does not block the second air-permeable hole 212, ensuring that air can flow smoothly into or out of the first air-permeable channel 121, thereby realizing the air pressure balance inside and outside the headlight. Such a design not only ensures air permeability but also avoids the obstruction of the first air-permeable membrane 22 to the air flow, contributing to the smooth flow of the air flow.

[0062] , As a feasible implementation manner, a partition plate 15 is disposed in the accommodation cavity 11, and the partition plate 15 divides the accommodation cavity 11 into a first moisture absorption cavity 112 and a second moisture absorption cavity 113;

[0063] The moisture absorption efficiency of the moisture absorbent 16 placed in the first moisture absorption cavity 112 is greater than that of the moisture absorbent 16 placed in the second moisture absorption cavity 113; and / or, the total area of the first air-permeable holes 211 corresponding to the first moisture absorption cavity 112 is greater than the total area of the first air-permeable holes 211 corresponding to the second moisture absorption cavity 113.

[0064] Understandably, by arranging a partition plate 15 in the accommodation cavity 11, the moisture absorption valve 10 of the embodiment of the present utility model divides the accommodation cavity 11 into a first moisture absorption cavity 112 and a second moisture absorption cavity 113, further enhancing the moisture absorption performance of the moisture absorption valve 10 and realizing the hierarchical arrangement of the moisture absorbent 16. The moisture absorption efficiency of the moisture absorbent 16 placed in the first moisture absorption cavity 112 is higher than that of the moisture absorbent 16 placed in the second moisture absorption cavity 113; and / or, the total area of the first ventilation holes 211 corresponding to the first moisture absorption cavity 112 is larger than the total area of the first ventilation holes 211 corresponding to the second moisture absorption cavity 113; the above two designs are disclosed to set two regions with different moisture absorption efficiencies, so as to achieve rapid moisture absorption while ensuring long-term moisture absorption effect, which helps to improve the use efficiency of the moisture absorbent 16 and extend the service life of the moisture absorption valve 10.

[0065] Specifically, please refer to Figure 4 , in the figure, the accommodation cavity 11 is divided into two chambers, namely a first moisture absorption cavity 112 (right side) and a second moisture absorption cavity 113 (left side) by the partition plate 15, and four first ventilation holes 211 are arranged on the cover body 21 corresponding to the first moisture absorption cavity 112, and two first ventilation holes 211 are arranged corresponding to the second moisture absorption cavity 113, so that the rate of gas interaction between the first moisture absorption cavity 112 and the outside is higher, that is, the rapid moisture absorption function is ensured through the first moisture absorption cavity 112; although the rate of gas interaction of the second moisture absorption cavity 113 is relatively low, the service life of its moisture absorbent 16 will be correspondingly longer.

[0066] Please continue to refer to Figure 4 , as a feasible implementation manner, a support column 12 is arranged in the accommodation cavity 11, a first ventilation channel 121 is arranged in the support column 12, and the partition plate 15 is connected to the support column 12 and the inner side wall of the accommodation cavity 11 to realize the division of the accommodation cavity 11.

[0067] Understandably, by arranging the support column 12 in the accommodation cavity 11, the structural stability of the moisture absorption valve 10 is further improved. The first ventilation channel 121 is arranged in the support column 12, and the partition plate 15 is connected to the support column 12 and the inner side wall of the accommodation cavity 11 to realize the division of the accommodation cavity 11, which can ensure the smooth flow of air, enhance the structural stability of the moisture absorption valve 10, help to improve the use efficiency of the moisture absorbent 16, and extend the service life of the moisture absorption valve 10.

[0068] As a feasible implementation manner, the support column 12 is arranged in the middle area of the accommodation cavity 11.

[0069] Optionally, the volumes of the first moisture absorption cavity 112 and the second moisture absorption cavity 113 can be the same or different; the number and position of the partition plates 15 can be set as required, so as to realize the adjustment of the number and volume of the first moisture absorption cavity 112 and the second moisture absorption cavity 113.

[0070] Please refer to Figure 1 , as a feasible implementation, the moisture absorption valve 10 further includes a second breathable component 3. An installation cavity 14 communicating with the outside is provided on the valve body 1. The second breathable component 3 is disposed in the installation cavity 14 and covers the installation cavity 14. The second breathable channel 13 is located between the second breathable component 3 and the inner wall of the installation cavity 14. The second port 1312 communicates with the outside through the second breathable component 3.

[0071] It can be understood that by adding the second breathable component 3, the moisture absorption valve 10 of the embodiment of the present invention further enhances the breathable performance of the moisture absorption valve 10 while ensuring the balance of air pressure inside and outside the headlight. The second breathable component 3 is disposed in the installation cavity 14 and covers the installation cavity 14. The second breathable channel 13 is located between the second breathable component 3 and the inner wall of the installation cavity 14. The second port 1312 communicates with the outside through the second breathable component 3, which can effectively control the inflow and outflow of air, and at the same time realize gas exchange with the outside through the second breathable channel 13, which helps to maintain the balance of air pressure inside and outside the headlight and reduce the entry of moisture.

[0072] Please combine with Figure 1 and Figure 5 , as a feasible implementation, the second breathable channel 13 is a breathable groove provided on the bottom surface of the installation cavity 14. The second breathable component 3 includes a sealing component 31. The sealing component 31 is covered in the installation cavity 14 and seals the top of the breathable groove. The sealing component 31 is provided with a notch communicating with the outside corresponding to the second port 1312.

[0073] It can be understood that the design that the second breathable channel 13 of the embodiment of the present invention is a breathable groove provided on the bottom surface of the installation cavity 14 and the sealing component 31 is covered in the installation cavity 14 and seals the top of the breathable groove further enhances the breathable performance of the moisture absorption valve 10 while ensuring good sealing performance. The sealing component 31 is provided with a notch communicating with the outside corresponding to the second port 1312, which can effectively control the inflow and outflow of air, and at the same time realize the balance of air pressure inside and outside the headlight through the breathable groove, which helps to reduce the entry of moisture.

[0074] Please combine with Figure 7 and Figure 8 , Figure 7 The arrow shown in Figure 8The arrow in the figure shows the flow direction of the internal air flow from the first port 1311 into the second air permeable channel 13. Since the connection port 1321 is arranged towards the second port 1312, at this time, the air flow will not enter the bifurcation return channel 132, but directly flow towards the second port 1312 and then flow to the outside.

[0075] As a feasible implementation manner, the main channel 131 includes multiple sub-channels connected in sequence. The connection between adjacent sub-channels is arranged at an angle. That is, when flowing from one sub-channel to the adjacent next sub-channel, the flow direction or the angle will shift. And the connection port 1321 of the bifurcation return channel 132 is arranged corresponding to the connection of the adjacent sub-channels.

[0076] Specifically, each connection port 1321 of the bifurcation return channel 132 and the main channel 131 includes an inlet and an outlet of the bifurcation return channel 132. Among them, the inlet is arranged at the connection of the corresponding adjacent sub-channels, and the outlet is close to the connection of the corresponding adjacent sub-channels and is located on the side pointed by the intake direction. That is, the corresponding outlet is arranged closer to the first port 1311 than the inlet.

[0077] Please refer to Figure 5 , as a feasible implementation manner, the sealing assembly 31 includes a silica gel sheet 311 and a pressing plate 312. An installation structure 141 spaced from the air permeable groove is provided on the bottom surface of the installation cavity 14. The silica gel sheet 311 is provided with a clearance hole corresponding to the installation structure 141, and the pressing plate 312 is provided with a matching hole corresponding to the installation structure 141. The installation structure 141 passes through the clearance hole and is connected to the matching hole. The pressing plate 312 presses the silica gel sheet 311 against the bottom surface of the installation cavity 14; the second port 1312 is located on the outer edge of the installation cavity 14. The edge of the silica gel sheet 311 is provided with a first notch 3111 corresponding to the second port 1312, and the edge of the pressing plate 312 is provided with a second notch 3112 corresponding to the first notch 3111. The second port 1312, the first notch 3111 and the second notch 3112 are communicated in sequence.

[0078] Understandably, the specific structure of the sealing component 31 in the embodiment of the present utility model improves the sealing performance of the moisture absorption valve 10 while ensuring good air permeability. Specifically, the silica gel sheet 311 is provided with avoidance holes corresponding to the installation structure 141, and the pressing plate 312 is provided with matching holes corresponding to the installation structure 141. The installation structure 141 passes through the avoidance holes and is connected to the matching holes. The pressing plate 312 presses the silica gel sheet 311 against the bottom surface of the installation cavity 14, which can ensure a good sealing effect, avoid air leakage at the top of the ventilation groove, and reduce the entry of moisture; since the second port 1312 is located at the outer edge of the installation cavity 14, the edge of the silica gel sheet 311 is provided with a first notch 3111 corresponding to the second port 1312, and the edge of the pressing plate 312 is provided with a second notch 3112 corresponding to the first notch 3111. The second port 1312, the first notch 3111 and the second notch 3112 are communicated in sequence, which can ensure the smooth flow of air and reduce the entry of moisture at the same time.

[0079] Please refer to Figure 5 and Figure 6 As a feasible implementation manner, the second ventilation component 3 further includes a second ventilation membrane 32. The second ventilation membrane 32 is disposed on the valve body 1 and covers the installation cavity 14. A gap 33 is provided between the second ventilation membrane 32 and the sealing component 31. The notch communicates the ventilation groove and the gap 33, and the gap 33 exchanges gas with the outside through the second ventilation membrane 32.

[0080] Understandably, the design of the second ventilation membrane 32 in the embodiment of the present utility model further improves the ventilation performance of the moisture absorption valve 10 while ensuring a good sealing effect. The second ventilation membrane 32 is disposed on the valve body 1 and covers the installation cavity 14. A gap 33 is provided between the second ventilation membrane 32 and the sealing component 31. The notch communicates the ventilation groove and the gap 33, and the gap 33 exchanges gas with the outside through the second ventilation membrane 32, which can ensure the smooth flow of air and reduce the entry of moisture at the same time.

[0081] As a feasible implementation manner, a step 142 is provided at the top of the inner side wall of the installation cavity 14, and the second ventilation membrane 32 is installed and fixed on the step 142.

[0082] Understandably, the design of the step 142 can ensure a stable contact surface between the second ventilation membrane 32 and the inner side wall of the installation cavity 14, thereby improving the sealing performance of the second ventilation membrane 32, reducing the entry of moisture and impurities, and improving the dryness inside the vehicle lamp; moreover, the design of the step 142 can ensure the gap 33 between the second ventilation membrane 32 and the inner side wall of the installation cavity 14, which helps to balance the air pressure inside and outside the vehicle lamp, improve the ventilation performance, and reduce the entry of moisture at the same time.

[0083] Please refer to Figures 1 to 8 , the working process of the moisture absorption valve 10 provided in this embodiment is briefly described as follows:

[0084] Moisture absorption process: When moisture is generated inside the headlight, the moisture enters the accommodation cavity 11 through the first ventilation channel 121 and is absorbed by the moisture absorbent 16 in the accommodation cavity 11. The first ventilation membrane 22 covers the first ventilation hole 211, which can prevent impurities from entering the headlight, and at the same time ensures smooth air flow between the headlight and the outside through the avoidance hole.

[0085] Air pressure balance and ventilation process: When there is an air pressure difference inside and outside the headlight, the gas will exchange through the first ventilation channel 121 and the second ventilation channel 13 to achieve air pressure balance. The design of the main channel 131 and the bifurcated return channel 132 of the second ventilation channel 13 increases the complexity of the air flow path, which helps to slow down the speed of external moisture entering and at the same time achieves the air pressure balance inside and outside the headlight. The connection port 1321 of the bifurcated return channel 132 is arranged towards the second port 1312, so that the external air flow will be diverted when entering the second ventilation channel 13. Part of it advances along the main channel 131, and part of it enters the bifurcated return channel 132 and then returns to the main channel 131, thereby reducing the penetration rate of external moisture. The design of the bifurcated return channel 132 helps to reduce air flow conflicts and achieve better air flow guidance. The connection ports 1321 at both the head and the tail of the bifurcated return channel 132 and the main channel 131 are arranged towards the second port 1312, which means that the bifurcated return channel 132 only takes effect on the external air flow and has no effect on the internal air flow entering from the first port 1311.

[0086] Please refer to Figure 9 , a headlight assembly 100 is provided in the second embodiment of the present utility model, which includes a headlight body 20 and the moisture absorption valve 10 as described above provided on the headlight. It can be understood that the headlight assembly 100 has the same beneficial effects as the above moisture absorption valve 10 and will not be elaborated here.

[0087] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A moisture absorption valve, characterized in that: It comprises a valve body, the valve body is provided with a through first air permeable passage, one end of the valve body is provided with a receiving cavity with an opening, a moisture absorbent is provided in the receiving cavity, and a first inlet and outlet of the first air permeable passage are provided near the opening; A second air permeable channel is provided at one end of the valve body away from the opening, a first port of the second air permeable channel is connected to the first air permeable channel, and a second port of the second air permeable channel is connected to the outside; The second air permeable channel includes a main channel and a branched reflux channel connected to the main channel at both ends, and the connection ports of the branched reflux channel at both ends and the main channel are both arranged toward the second port.

2. The moisture absorbing valve according to claim 1, characterized in that: The moisture absorption valve further comprises a first air permeable component, which is arranged at one end of the valve body to cover the opening.

3. The moisture absorbing valve according to claim 2, characterized in that: The first breathable component includes a cover body and a first breathable membrane arranged on the cover body, the cover body is provided with a first breathable hole corresponding to the accommodating cavity, the cover body is provided with a second breathable hole corresponding to the first breathable channel, the first breathable membrane covers the first breathable hole, and the first breathable membrane is provided with an avoidance hole corresponding to the second breathable hole.

4. The moisture absorbing valve according to claim 1, characterized in that: The moisture absorption valve also includes a second air permeable component, the valve body is provided with an installation cavity connected to the outside world, the second air permeable component is arranged in the installation cavity and covers the installation cavity, the second air permeable channel is located between the second air permeable component and the inner wall of the installation cavity, and the second port is connected to the outside world through the second air permeable component.

5. The moisture absorbing valve according to claim 4, characterized in that: The second air permeable channel is a air permeable groove arranged on the bottom surface of the installation cavity. The second air permeable component includes a sealing component. The sealing component cover is arranged in the installation cavity and seals the top of the air permeable groove. The sealing component is provided with a gap corresponding to the second port to communicate with the outside world.

6. The moisture absorbing valve according to claim 5, characterized in that: The sealing assembly includes a silicone sheet and a pressure plate. A mounting structure spaced from the air vent is provided on the bottom surface of the mounting cavity. A avoidance hole is provided on the silicone sheet corresponding to the mounting structure. The pressure plate is provided with a matching hole corresponding to the mounting structure. The mounting structure is connected to the matching hole through the avoidance hole. The pressure plate presses the silicone sheet against the bottom surface of the mounting cavity. The second port is located at the outer edge of the mounting cavity. A first notch is provided on the edge of the silicone sheet corresponding to the second port. A second notch is provided on the edge of the pressure plate corresponding to the first notch. The second port, the first notch and the second notch are connected in sequence.

7. The moisture absorbing valve according to claim 6, characterized in that: The second breathable component also includes a second breathable membrane, which is arranged on the valve body and covers the installation cavity. A gap is provided between the second breathable membrane and the sealing component. The gap connects the breathable groove and the gap. The gap realizes gas exchange with the outside through the second breathable membrane.

8. The moisture absorbing valve according to claim 3, characterized in that: A partition plate is provided in the accommodating chamber, and the partition plate divides the accommodating chamber into a first moisture absorption chamber and a second moisture absorption chamber; The moisture absorption efficiency of the desiccant placed in the first desiccant cavity is greater than the moisture absorption efficiency of the desiccant placed in the second desiccant cavity; and / or, the total area of ​​the first air holes arranged corresponding to the first desiccant cavity is greater than the total area of ​​the first air holes arranged corresponding to the second desiccant cavity.

9. The moisture absorbing valve according to claim 8, characterized in that: A support column is arranged in the accommodating cavity, the first air permeable passage is arranged in the support column, and the partition plate connects the support column and the inner side wall of the accommodating cavity to separate the accommodating cavity.

10. A vehicle lamp assembly, characterized in that: The invention comprises a vehicle lamp body and a moisture absorption valve as claimed in any one of claims 1 to 9 arranged on the vehicle lamp.

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