Car lamp balance moisture absorption valve

Abstract

The utility model provides a car lamp balance moisture absorption valve which comprises an upper cover and a lower cover, the top of the upper cover faces the external environment of a car lamp, the bottom of the lower cover faces the interior of the car lamp, and air holes are formed in the bottom of the lower cover. The upper cover comprises a top cavity and a bottom cavity, the bottom cavity and the lower cover form a containing cavity, a drying agent is filled in the containing cavity, a communicated channel is arranged between the top cavity and the bottom cavity, an elastic pressure balance valve is arranged in the top cavity and located at the position of the channel, and the elastic pressure balance valve is connected with the top cavity and the bottom cavity. The elastic pressure balance valve can be opened or closed along with the change of the pressure in the containing cavity and the pressure of the external environment. The elastic pressure balance valve and the drying agent are integrally designed, when the pressure difference between the external environment pressure and the internal pressure of the automobile lamp is large, exchange of air inside and outside the automobile lamp can be automatically achieved, the amount of water vapor entering the automobile lamp is reduced, the drying agent does not need to be manually replaced, the frequency of better drying agent is reduced, and the service life of the automobile lamp is prolonged. And the service life of the automobile lamp is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamp accessories, and in particular relates to a vehicle lamp balancing moisture absorption valve. Background Art

[0002] Over extended use, such as in rainy weather or during car washes, car lights can easily accumulate condensation, affecting their brightness. A common solution currently involves creating a hole in the headlight and attaching a pressure-balancing membrane to the hole to balance pressure inside and outside the headlight. Furthermore, a desiccant is installed and regularly replaced to absorb the condensation. However, this solution is complex due to the separate placement of the pressure-balancing membrane and desiccant, and the need for frequent and regular desiccant replacement. Furthermore, desiccant replacement can easily cause moisture to enter the headlight, shortening its lifespan. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a balanced moisture absorption valve for vehicle lamps.

[0004] In order to achieve the above purpose, the solutions adopted by the present invention are as follows:

[0005] The utility model provides a balanced moisture absorption valve for a vehicle lamp, comprising an upper cover and a lower cover, wherein the top of the upper cover faces the external environment of the vehicle lamp, the bottom of the lower cover faces the inside of the vehicle lamp, and the bottom of the lower cover is provided with an air vent; the upper cover comprises a top cavity and a bottom cavity, the bottom cavity and the lower cover form a containing cavity, the containing cavity is filled with a desiccant, a communicating channel is provided between the top cavity and the bottom cavity, an elastic pressure balancing valve is provided in the top cavity and at the location of the channel, and the elastic pressure balancing valve will open or close as the pressure in the containing cavity and the pressure of the external environment change.

[0006] Preferably, the channel is a circular channel and is located at the center of the upper cover.

[0007] Preferably, a first step hole having a diameter larger than that of the channel and a second step hole having a diameter larger than that of the first step hole are provided in the top cavity of the upper cover, and the elastic pressure balancing valve is provided on the first step hole.

[0008] Preferably, a waterproof and breathable membrane is provided on the second step hole, and the material of the waterproof and breathable membrane is PET or EPTFE.

[0009] Preferably, the elastic pressure balancing valve includes a valve body fixing member and an elastic valve body; the valve body fixing member is used to fix the elastic valve body, and the valve body fixing member is fixed to the second step hole of the upper cover by interference fit.

[0010] Preferably, the valve body fixing part includes a first annular fixing part and a second annular fixing part, the first annular fixing part is used to fix the valve body fixing part on the second step hole of the upper cover, the second annular fixing part is located inside the first annular fixing part, the elastic valve body is arranged on the second annular fixing part, and the second annular fixing part is provided with circumferentially distributed openings.

[0011] Preferably, the elastic valve body is disc-shaped and made of silicone material, and a cross cut is provided at the center of the elastic valve body.

[0012] Preferably, the upper cover includes a cylindrical first side wall for forming a bottom cavity, and a plurality of fasteners evenly distributed on the outer circumference of the first side wall are provided. The lower cover includes a cylindrical second side wall and a bottom shell, and a card slot corresponding to the fastener of the upper cover is provided on the second side wall. The lower cover is fastened to the bottom of the upper cover by the cooperation of the fastener and the card slot.

[0013] Preferably, several radially extending first ribs evenly distributed around the circumference are provided in the upper cover between the top cavity and the bottom cavity, several radially extending second ribs evenly distributed around the circumference and several annular third ribs centered on the center of the lower cover are provided on the bottom shell of the lower cover, and the desiccant is located between the first rib of the upper cover and the second and third ribs of the lower cover.

[0014] Preferably, the air vents at the bottom of the lower cover are provided on the bottom shell of the lower cover, and include a plurality of through holes located in the two central third ribs and a plurality of annular through grooves located in the plurality of outer third ribs.

[0015] Preferably, a ring-shaped fixing ring is provided on the outside of the upper cover, between the top cavity and the bottom cavity, for fixing the headlight balancing moisture absorption valve in the headlight, and a sealing ring is provided on the inside of the ring-shaped fixing ring for sealing between the headlight balancing moisture absorption valve and the headlight fixing accessories.

[0016] Beneficial effects

[0017] The utility model provides a balanced moisture absorption valve for headlights, which integrates an elastic pressure balancing valve and a desiccant. When the pressure difference between the external environment pressure and the internal pressure of the headlight is large, the gas exchange inside and outside the headlight can be automatically realized, thereby reducing the amount of water vapor entering the headlight. There is no need to manually replace the desiccant, reducing the frequency of replacing the desiccant and increasing the service life of the headlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional exploded structure of the vehicle lamp balancing moisture absorption valve involved in the utility model.

[0019] Figure 2 This is a cross-sectional view of the vehicle lamp balancing moisture absorption valve involved in the utility model.

[0020] Figure 3 This is a cross-sectional view of the vehicle lamp balancing moisture absorption valve of the present invention when the external environmental pressure is greater than the internal pressure of the vehicle lamp.

[0021] Figure 4 This is a cross-sectional view of the vehicle lamp balancing moisture absorption valve of the present invention when the external environmental pressure is less than the internal pressure of the vehicle lamp.

[0022] Figure 5 It is a three-dimensional structural diagram and a decomposed structural diagram of the elastic pressure balancing valve of the vehicle lamp balanced moisture absorption valve involved in the utility model.

[0023] Figure 6 The utility model is a schematic diagram of the exploded structure of the elastic pressure balancing valve of the vehicle lamp balancing moisture absorption valve.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper cover of the vehicle lamp balancing moisture absorption valve involved in the utility model.

[0025] Figure 8 The utility model is a schematic structural diagram of the bottom surface of the upper cover of the vehicle lamp balancing moisture absorption valve.

[0026] Figure 9 The present invention is a schematic diagram of the three-dimensional structure of the lower cover of the vehicle lamp balancing moisture absorption valve at one angle.

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the lower cover of the vehicle lamp balancing moisture absorption valve involved in the present invention from another angle. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] To this end, the following solutions are proposed:

[0035] See also Figure 1 The utility model provides a balanced moisture absorption valve for a headlight, comprising an upper cover 100 and a lower cover 200 . The top of the upper cover 100 faces the external environment of the headlight, and the bottom of the lower cover 200 faces the inside of the headlight. An air hole 201 is provided at the bottom of the lower cover 200 .

[0036] Specifically, the upper cover 100 includes a top cavity 101 and a bottom cavity 102. The bottom cavity 102 and the lower cover 200 form a chamber filled with a desiccant 300. A channel 103 connects the top cavity 101 and the bottom cavity 102. An elastic pressure balancing valve 400 is disposed within the top cavity 101, located at the channel 103. The elastic pressure balancing valve 400 opens or closes in response to changes in the pressure within the chamber and the external ambient pressure.

[0037] As an embodiment of the present invention, when the external environment pressure is greater than the internal pressure of the lamp (such as Figure 3 As shown), the outside air opens the elastic pressure balancing valve 400, passes through the channel 103, passes through the desiccant 300 in the cavity, and then enters the interior of the lamp through the air vent 201 at the bottom of the lower cover 200; when the difference between the external environment pressure and the internal pressure of the lamp is not much, the elastic pressure balancing valve 400 is closed to prevent water vapor from entering the interior of the lamp; when the external environment pressure is lower than the internal pressure of the lamp (as shown), the outside air opens the elastic pressure balancing valve 400, passes through the channel 103, passes through the desiccant 300 in the cavity, and then enters the interior of the lamp through the air vent 201 at the bottom of the lower cover 200; when the difference between the external environment pressure and the internal pressure of the lamp is not much, the elastic pressure balancing valve 400 is closed to prevent water vapor from entering the interior of the lamp; when the external environment pressure is lower than Figure 4 As shown in FIG, the air inside the lamp passes through the vent hole 201 at the bottom of the lower cover 200, passes through the desiccant 300 in the cavity, and then passes through the channel 103, opens the elastic pressure balance valve 400, and is finally discharged out of the lamp; when there is condensed water inside the lamp, it will be absorbed by the desiccant 300, ensuring the dryness of the interior of the lamp and preventing the generation of condensed water.

[0038] In some embodiments, the channel 103 between the top cavity 101 and the bottom cavity 102 of the upper cover 100 is a circular channel located at the center of the upper cover 100. Furthermore, a first stepped hole 104 having a larger diameter than the channel 103 and a second stepped hole 105 having a larger diameter than the first stepped hole 104 are provided in the top cavity 101 of the upper cover 100. An elastic pressure balancing valve 400 is provided on the first stepped hole 104, and a waterproof breathable membrane 500 is provided on the second stepped hole 105 to further prevent moisture from the external environment from entering the headlight or prevent condensation from forming inside the headlight, thereby further ensuring dryness inside the headlight. The waterproof breathable membrane 500 is made of PET or EPTFE and is welded to the second stepped hole 105 of the upper cover 100, for example, by ultrasonic welding.

[0039] In some embodiments, as Figure 5 、 Figure 6 As shown, in the vehicle lamp balancing moisture absorption valve of the present invention, the elastic pressure balancing valve 400 includes a valve body fixing member 401 and an elastic valve body 402, wherein the valve body fixing member 401 is used to fix the elastic valve body 402, and the valve body fixing member 401 fixes the elastic pressure balancing valve 400 on the second step hole 105 of the upper cover 100 through interference fit.

[0040] In a preferred embodiment, the valve body fixing member 401 includes a first annular fixing portion 4011 and a second annular fixing portion 4012. The first annular fixing portion 4011 is used to secure the valve body fixing member 401 to the second stepped hole 105 of the upper cover 100. The second annular fixing portion 4012 is located within the first annular fixing portion 4011 and is provided with circumferentially distributed openings 4012a. The elastic valve body 402 is disposed on the second annular fixing portion 4012. In some embodiments, the elastic valve body 402 is disc-shaped and has a cross-shaped cutout at its center. When a pressure differential exists between the ambient pressure and the pressure within the chamber, the outside air or the air inside the headlight passes through the openings 4012a in the second annular fixing portion 4012 of the valve body fixing member 401 of the elastic pressure balancing valve 400, opening the cross-shaped cutout in the elastic valve body 402, thereby opening and closing the elastic pressure balancing valve 400.

[0041] In some embodiments, the valve body fixing part 401 is made of plastic material, the elastic valve body 402 is made of silicone material, the valve body fixing part 401 and the elastic valve body 402 are integrally formed, and there is an injection hole on the valve body fixing part 401. After the injection molding of the plastic part of the valve body fixing part 401 is completed, the injection molding of the silicone part of the elastic valve body 402 is completed through the injection hole on the valve body fixing part 401.

[0042] like Figure 7-10 As shown, in the vehicle lamp balancing moisture absorption valve of the present invention, the upper cover 100 includes a cylindrical first side wall 106 for forming a bottom cavity 102, and a plurality of fastening members 1061 evenly distributed on the outer periphery of the first side wall 106 are provided. The lower cover 200 includes a cylindrical second side wall 202 and a bottom shell 203, and a card groove 204 corresponding to the fastening member 1061 of the upper cover 100 is provided on the second side wall 202. The lower cover 200 is fastened to the bottom of the upper cover 100 by the cooperation of the fastening member 1061 and the card groove 204.

[0043] Furthermore, several radially extending first ribs 107 are evenly distributed within the upper cover 100, between the top cavity 101 and the bottom cavity 102. Several radially extending second ribs 205 are evenly distributed within the lower cover 200, as well as several annular third ribs 206 centered at the center of the lower cover 200. The desiccant 300 is located between the first ribs 107 of the upper cover 100 and the second and third ribs 205, 206 of the lower cover 200. The air vents 201 at the bottom of the lower cover 200 are located on the bottom shell 203 of the lower cover 200 and include several through-holes 2011 within the two central third ribs 206 and several annular grooves 2012 within the outer third ribs 206.

[0044] For example Figure 1-4 As shown, in the vehicle lamp balancing moisture absorption valve of the present invention, a circle of annular fixing ring 108 is provided on the outside of the upper cover 100, between the top cavity 101 and the bottom cavity 102. The vehicle lamp balancing moisture absorption valve of the present invention is fixed in the vehicle lamp by the annular fixing ring 108, and a circle of sealing ring 600 is provided on the inner side of the annular fixing ring 108 for sealing between the vehicle lamp balancing moisture absorption valve and the vehicle lamp related fixing accessories.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A vehicle lamp balance moisture absorption valve, characterized in that: The vehicle lamp comprises an upper cover and a lower cover, wherein the top of the upper cover faces the external environment of the vehicle lamp, and the bottom of the lower cover faces the inside of the vehicle lamp, and the bottom of the lower cover is provided with an air vent; the upper cover comprises a top cavity and a bottom cavity, wherein the bottom cavity and the lower cover form a cavity, wherein a desiccant is filled in the cavity, and a communicating channel is provided between the top cavity and the bottom cavity, and an elastic pressure balancing valve is provided in the top cavity and at the channel, and the elastic pressure balancing valve will open or close as the pressure in the cavity changes with the pressure in the external environment.

2. The vehicle lamp balancing moisture absorption valve according to claim 1, characterized in that: The channel is a circular channel and is located at the center of the upper cover.

3. The vehicle lamp balancing moisture absorption valve according to claim 2, characterized in that: A first step hole with a diameter larger than that of the channel and a second step hole with a diameter larger than that of the first step hole are provided in the top cavity of the upper cover, and the elastic pressure balancing valve is provided on the first step hole.

4. The vehicle lamp balancing moisture absorption valve according to claim 3, characterized in that: A waterproof and breathable membrane is provided on the second step hole.

5. The vehicle lamp balancing moisture absorption valve according to claim 1, characterized in that: The elastic pressure balancing valve includes a valve body fixing member and an elastic valve body; the valve body fixing member is used to fix the elastic valve body, and the valve body fixing member is fixed to the second step hole of the upper cover through interference fit.

6. The vehicle lamp balancing moisture absorption valve according to claim 5, characterized in that: The valve body fixing part includes a first annular fixing part and a second annular fixing part. The first annular fixing part is used to fix the valve body fixing part on the second step hole of the upper cover. The second annular fixing part is located inside the first annular fixing part. The elastic valve body is arranged on the second annular fixing part. The second annular fixing part is provided with circumferentially distributed openings.

7. The vehicle lamp balancing moisture absorption valve according to claim 5, characterized in that: The elastic valve body is a disk-shaped silicone material, and a cross cut is provided at the center of the elastic valve body.

8. The vehicle lamp balancing moisture absorption valve according to claim 1, characterized in that: The upper cover includes a cylindrical first side wall for forming a bottom cavity, and a plurality of fastening parts evenly distributed on the outer circumference of the first side wall are provided. The lower cover includes a cylindrical second side wall and a bottom shell, and a card slot corresponding to the fastening part of the upper cover is provided on the second side wall. The lower cover is fastened to the bottom of the upper cover through the cooperation of the fastening part and the card slot.

9. The vehicle lamp balancing moisture absorption valve according to claim 8, characterized in that: Several radially extending first ribs evenly distributed around the circumference are provided inside the upper cover at a position between the top cavity and the bottom cavity; several radially extending second ribs evenly distributed around the circumference and several annular third ribs centered on the center of the circle of the lower cover are provided on the bottom shell of the lower cover; the desiccant is located between the first ribs of the upper cover and the second and third ribs of the lower cover; the air vents at the bottom of the lower cover are provided on the bottom shell of the lower cover, including several through holes located in the two central third ribs and several annular through grooves located in the several third ribs located on the outside.

10. The vehicle lamp balancing moisture absorption valve according to any one of claims 1 to 9, characterized in that: On the outside of the upper cover, between the top cavity and the bottom cavity, there is a circle of annular fixing ring for fixing the headlight balancing moisture absorption valve in the headlight. On the inside of the annular fixing ring is a circle of sealing ring for sealing between the headlight balancing moisture absorption valve and the headlight fixing accessories.

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