CN111810911A - A replaceable automatic moisture absorption device for automobile lamps - Google Patents

Abstract

The invention relates to the technical field of automobiles, and more particularly, to a replaceable automatic moisture absorption device for automobile lamps. The replaceable automatic moisture absorption device for automobile lamps provided by the present invention is installed on the headlight housing, and further comprises a stepping motor, an upper air intake mechanism and a lower air exhaust mechanism: the upper air intake mechanism includes an upper transmission shielding plate and an air intake guide. Flow hood assembly; the lower exhaust mechanism includes a casing assembly and a lower transmission shielding plate, and the interior of the casing assembly is provided with moisture-absorbing materials; a stepping motor drives the relative vertical position of the upper transmission shielding plate and the air intake shroud Change, push the relative vertical position of the lower transmission shield plate and the housing assembly to change, control the working mode corresponding to the replaceable automatic moisture absorption device of the automobile lamp, and control the opening or closing of the upper air intake mechanism and the lower exhaust mechanism. The invention can absorb and remove the moisture in the lamp, and can balance the pressure difference in the lamp, so as to realize the function of automatic and intelligent defogging of the headlamp.

Description

A replaceable automatic moisture absorption device for automobile lamps

technical field

The invention relates to the technical field of automobiles, and more particularly, to a replaceable automatic moisture absorption device for automobile lamps.

Background technique

Automobile lamps are the eyes of the car, which not only play a decisive role in the shape of the vehicle, but also have the function of illuminating the road surface; due to the different seasonal climate distribution in inland China, especially in the winter in the north, the light distribution of the headlights of the car is very important. The mirror is very easy to fog, and the fogging of the headlight will seriously affect the illumination effect of the light source in the lamp, and there will be problems such as the change of the light emitted by the lamp, the weakening of the road light intensity, and the narrowing of the visual angle of the signal lamp.

In order to improve the fog problem of lamps and lanterns, the conventional whole lamp factory will adopt the combination scheme of ventilating elbow and desiccant. In the housing 101 , a ventilation elbow is installed on the back of the ventilation hole 102 , and a desiccant 103 is used at the same time. Due to the differences in the structure of different vehicles and the external environment, the air conductivity of the ventilation bends is different. At the same time, it is difficult to determine the amount of the headlight desiccant 103 of different volumes. It is necessary to determine the ventilation bends through multiple vehicle tests. Tube opening and closing strategy, installation location, and specific desiccant quality and composition.

The desiccant 103 generally uses calcium oxide, iron oxide, etc. as the main components, which may fail after a certain period of use. However, the desiccant 103 is installed in the headlight housing 101 and cannot be replaced. Most of the overall headlight materials are made of plastic for weight reduction. The plastic material has a certain water absorption, and the general water absorption rate is 0.01 to 0.03.

When used for a long time, in addition to the moisture entering the headlight from the ventilating elbow, the headlight lens and the housing will also slowly absorb the moisture from the external environment, which will lead to an increase in the water vapor content inside the headlamp, resulting in fog on the lens. etc. to complain about the problem.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a replaceable automatic moisture absorption device for automobile lamps to solve the fogging problem of the light distribution mirror of the headlight.

In order to achieve the above purpose, the present invention provides a replaceable automatic moisture absorption device for automobile lamps, which is installed on the headlight housing, and further includes a stepping motor, an upper air intake mechanism and a lower end exhaust mechanism:

The upper air intake mechanism includes an upper transmission shielding plate and an air intake shroud assembly;

The lower-end exhaust mechanism includes a casing assembly and a lower transmission shielding plate, and a moisture-absorbing material is arranged inside the casing assembly;

One end of the stepping motor is connected with the upper transmission shielding plate, and the other end is connected with the lower transmission shielding plate. The relative vertical position of the vehicle is changed, and the corresponding working mode of the automatic moisture absorption device can be changed by controlling the automobile lamps, and the opening or closing of the upper air intake mechanism and the lower exhaust mechanism can be controlled. external pressure difference.

In one embodiment, a guide groove is left on the edge of the upper transmission shielding plate, which cooperates with the guide ribs of the air intake shroud assembly to perform vertical guide and limit position;

The upper transmission shielding plate has a limit top rib on the upper part, which is matched with the limit groove of the air intake shroud assembly;

The lower transmission shielding plate shown has a guide groove on the edge, which cooperates with the guide rib of the shell assembly to carry out vertical guide limit;

The lower transmission shielding plate has a limit top rib at the lower part, which is matched with the limit groove of the casing assembly.

In one embodiment, the air intake shroud assembly includes a dust-proof ventilating cover, an annular ventilating membrane, a plurality of shroud cells and a rectangular ventilating membrane:

The shroud is a single body, with a rectangular groove at the bottom for fixing the rectangular breathable membrane;

The single body of the shroud has air passages on both sides, and is in contact with the shielding curved plate left on the edge of the upper transmission shielding plate through vertical movement to guide the internal moisture of the headlight into the inner cavity of the casing assembly;

The dust-proof and ventilating cover is vertically fixed on the overall structure formed by several shroud monomers;

The dust ventilating cover has a fan-shaped slot hole on the surface, and a ring-shaped ventilating film is fixed at the lower part of the dust ventilating cover.

In one embodiment, the upper transmission shielding plate and the lower transmission shielding plate are provided with matching threaded holes in the middle, which are used to connect the stepping motor, and transmit the power to move up and down synchronously;

The two ends of the stepping motor are connected with a drive worm through a flat key, and the drive worm is matched with the upper drive shielding plate and the threaded hole of the lower drive shield, and the stepper motor is driven by a set drive logic.

In one embodiment, the casing assembly further includes a casing, an annular breathable membrane, a rectangular breathable membrane and a breathable grille:

The shell has a plurality of rectangular through holes at the bottom, which communicate with the moisture absorption cavity of the shell;

The rectangular breathable film and the breathable grille are fixed on the rectangular through holes, and are in contact with the shielding curved plate left on the edge of the lower transmission shielding plate through vertical movement, so as to guide the moisture to flow out of the lamp;

the hygroscopic material is arranged inside the hygroscopic cavity;

The shell has a fan-shaped slot hole at the bottom as a ventilation hole, and the annular ventilation film is fixed on the ventilation hole at the bottom of the shell.

In one embodiment, a square hole is left in the middle of the casing for accommodating the stepping motor;

The casing has a glue groove on the edge, which is fixedly connected with the air intake shroud assembly;

The bottom edge of the casing is provided with several tightening handles, which are used for the installation and removal of the replaceable automatic moisture absorption device of the automobile lamp on the headlight.

In one embodiment, the ventilation grille is a fan-shaped curved plate as a whole, with a plurality of through holes opened on the surface, and a rectangular ventilation film is fixed on the ventilation grille.

In one embodiment, the replaceable automatic moisture absorption device for automobile lamps further includes a sealing rubber ring, which is sleeved on the outside of the housing to ensure the airtightness of the replaceable automatic moisture absorption device for automobile lamps installed on the headlight space.

In one embodiment, the replaceable automatic moisture absorption device for automobile lamps further includes a support frame:

The support frame is in the shape of a plate as a whole, and there are several rectangular grooves around, and a ventilation hole is opened in the rectangular groove, and a rectangular breathable film is fixed in the rectangular groove;

The support frame is provided with a circular hole in the middle, and the stepping motor passes through the circular hole;

The support frame is provided with several positioning pins around it, which are positioned with the bottom of the air intake shroud assembly and are installed together;

The support frame is provided with a rectangular protruding structure at the bottom, which is used for limit fit installation with the housing assembly.

In one embodiment, the hygroscopic material adopts a combination of MgCl2 and CaO, wherein the ratio of MgCl2:CaO is more than 2:1.

In one embodiment, the working mode includes a first working mode, and the replaceable automatic moisture absorption device of the automobile lamp absorbs the moisture of the headlight in the first working mode:

The limit top rib of the upper transmission shield is flush with the lower edge of the air channel of the air intake shroud assembly, the air channel is fully opened, and the moisture inside the headlight passes through the air channel in the air intake shroud assembly reach the hygroscopic material;

The shielding surface of the shielding curved plate of the lower transmission shielding plate is in complete contact with the ventilation grille of the casing assembly, and the lower end exhaust mechanism is closed.

In one embodiment, the logical condition for enabling the first working mode is to satisfy any one of the following conditions:

The humidity content in the headlights in summer is between the first humidity threshold and the second humidity threshold, and the humidity content in the headlights in winter is above the third humidity threshold;

The air humidity content inside the headlights is lower than the air humidity content in the engine compartment.

In one embodiment, the working mode includes a second working mode, and the replaceable automatic moisture absorption device of the automobile lamp discharges the headlight moisture in the second working mode:

The shielding curved plate of the upper transmission shielding plate is in complete contact with the air passage of the air intake shroud assembly, and the upper air intake mechanism is closed;

The limit top rib of the lower transmission shielding plate is flush with the upper edge of the ventilation grille, the ventilation grille is fully opened, the lower end exhaust mechanism is opened, and the moisture absorbing material releases water vapor to the outside.

In one embodiment, the logical condition for enabling the second working mode is to satisfy any one of the following conditions:

The humidity content in the headlights in summer is below the first humidity threshold, and the humidity content in the headlights in winter is below the third humidity threshold;

The air humidity content inside the headlights is higher than the air humidity content in the engine compartment.

In one embodiment, the working mode includes a third working mode, and the replaceable automatic moisture absorption device for automobile lamps connects the headlights and the outside air in the third working mode:

The limit top rib of the upper transmission shield is flush with the middle of the air passage of the intake shroud assembly, the upper air intake mechanism is half-opened, and the high-pressure air inside the headlight passes through the air in the intake shroud assembly to the absorbent material;

The limit top rib of the lower transmission shutter is flush with the middle of the ventilation grille, the lower exhaust mechanism is half-opened, and the high-pressure air inside the headlight is ejected from the bottom of the housing.

In one embodiment, the logic condition for turning on the third working mode is that the internal atmospheric pressure of the headlamp is higher than the first air pressure threshold or lower than the second air pressure threshold, and the third working mode is turned on with the highest priority.

The replaceable automatic moisture absorption device for automobile lamps provided by the present invention has the following beneficial effects:

1) The humidity sensor and atmospheric pressure sensor inside and outside the lamp can be combined to control the opening mode of the replaceable automatic moisture absorption device to perform intelligent dehumidification and avoid fogging of the headlight light distribution mirror;

2) The headlights of the replaceable automatic moisture absorption device using automobile lamps adopt a fully enclosed structure, and the pressure difference between the inside and outside of the lamp can be freely adjusted through the third working mode to avoid the problem of bursting of the light distribution mirror or the light bulb;

3) The replaceable automatic moisture absorption device for automobile lamps has a simple assembly method and a clear control logic;

4) The structure of the replaceable automatic moisture absorption device for automobile lamps can be adjusted, which is convenient to match different types of lamps, easy to install, and can be replaced and recycled;

5) The replaceable automatic moisture absorption device for automobile lamps can be equipped with different quality moisture absorption materials to form batch products of different specifications. According to the actual fog situation in the lamp, different grades of replaceable mist absorber fixing assemblies can be reasonably configured to avoid material waste.

Description of drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which like reference numerals refer to like features throughout, wherein:

Fig. 1 discloses the schematic diagram of the anti-fog structure of the headlamp housing in the prior art;

Fig. 2 discloses a schematic diagram of fixing the replaceable automatic moisture absorbing device and the sensor in the lamp housing of the automobile lamp according to an embodiment of the present invention;

Fig. 3a discloses an enlarged view of the replaceable automatic moisture absorbing device for automobile lamps at the installation position A according to an embodiment of the present invention;

Fig. 3b shows an enlarged view of the temperature and humidity sensor at the installation position B according to an embodiment of the present invention;

Fig. 3c discloses an enlarged view of the atmospheric pressure sensor at the installation position C according to an embodiment of the present invention;

FIG. 3d discloses an enlarged view of the temperature and humidity sensor at the installation position D according to an embodiment of the present invention;

Fig. 4 discloses the front view of the structure of the intelligent headlight of the automobile with automatic defogging according to an embodiment of the present invention;

Fig. 5a discloses a bottom view of the structure of the intelligent headlight of an automobile with automatic defogging according to an embodiment of the present invention;

Fig. 5b discloses an E-E cross-sectional view of the structure of the intelligent headlight structure of an automatic defogging vehicle according to an embodiment of the present invention;

Fig. 6a discloses a structural axonometric view of the replaceable automatic moisture absorbing device for automobile lamps according to an embodiment of the present invention;

Fig. 6b shows an exploded view of the structure of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention;

FIG. 7a shows a top view of the structure of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention;

Fig. 7b discloses the F-F cross-sectional view of the structure of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention;

Fig. 8 discloses a structural installation position diagram of a part of the replaceable automatic moisture absorbing device for automobile lamps according to an embodiment of the present invention;

Fig. 9a discloses a first axonometric view of an upper transmission shutter structure according to an embodiment of the present invention;

Fig. 9b discloses a second axonometric view of the upper transmission shutter structure according to an embodiment of the present invention;

Figure 10a discloses a structural axonometric view of the casing assembly according to an embodiment of the present invention;

Figure 10b discloses a bottom view of the structure of the casing assembly according to an embodiment of the present invention;

Fig. 11a shows a top view of the structure of the housing assembly according to an embodiment of the present invention;

Fig. 11b discloses a J-J cross-sectional view of the housing assembly structure according to an embodiment of the present invention;

Fig. 11c discloses an I-I cross-sectional view of the housing assembly structure according to an embodiment of the present invention;

FIG. 12 discloses an axonometric view of a ventilation grid structure according to an embodiment of the present invention;

Fig. 13a discloses an axonometric view of the structure of the air intake shroud assembly according to an embodiment of the present invention;

Fig. 13b shows an exploded view of the structure of the air intake shroud assembly according to an embodiment of the present invention;

Fig. 14a shows a front view of the structure of an air intake shroud assembly according to an embodiment of the present invention;

Figure 14b discloses a cross-sectional view of the H-H section of the air intake shroud assembly structure according to an embodiment of the present invention;

Fig. 15a discloses an axonometric view of a single structure of a shroud according to an embodiment of the present invention;

Fig. 15b shows a bottom view of the structure of the air intake shroud assembly according to an embodiment of the present invention;

Figure 16a discloses a perspective view of the structure of a dust venting cover according to an embodiment of the present invention;

Figure 16b discloses an axonometric view of a support frame structure according to an embodiment of the present invention;

Fig. 17a shows a schematic structural diagram of a replaceable automatic moisture absorption device for automobile lamps in a first working mode according to an embodiment of the present invention;

Fig. 17b discloses a cross-sectional view A-A of the replaceable automatic moisture absorption device for automobile lamps in the first working mode according to an embodiment of the present invention;

Fig. 17c discloses a B-B cross-sectional view of the replaceable automatic moisture absorption device for automobile lamps in the first working mode according to an embodiment of the present invention;

Fig. 18a shows a schematic structural diagram of a replaceable automatic moisture absorption device for automobile lamps in a second working mode according to an embodiment of the present invention;

Figure 18b discloses the A-A cross-sectional view of the replaceable automatic moisture absorption device for automobile lamps in the second working mode according to an embodiment of the present invention;

Fig. 18c discloses a B-B cross-sectional view of the replaceable automatic moisture absorption device for automobile lamps in the second working mode according to an embodiment of the present invention;

Fig. 19a shows a schematic structural diagram of a replaceable automatic moisture absorption device for automobile lamps in a third working mode according to an embodiment of the present invention;

Fig. 19b discloses the A-A cross-sectional view of the replaceable automatic moisture absorption device for automobile lamps in the third working mode according to an embodiment of the present invention;

Fig. 19c discloses a B-B cross-sectional view of the replaceable automatic moisture absorption device for automobile lamps in a third working mode according to an embodiment of the present invention;

Fig. 20 discloses a control logic diagram of a working mode of the replaceable automatic moisture absorbing device for automobile lamps according to an embodiment of the present invention;

FIG. 21 is a schematic diagram illustrating the assembly method of the replaceable automatic moisture absorbing device for automobile lamps according to an embodiment of the present invention.

The meanings of the reference numerals in the figure are as follows:

101 headlight housing;

102 ventilation holes;

103 desiccant;

200 headlight housing;

201 rectangular notch;

300 car lamps can replace the automatic moisture absorption device;

310 upper transmission shielding plate;

311 guide groove, 312 limit top rib, 313 block curved panel.

320 lower transmission shielding plate;

330 stepper motor;

331 drive worm, 332 worm guide hole;

340 shell assembly;

341 shell, 342 moisture-absorbing material, 343 annular breathable membrane, 344 rectangular breathable membrane, 345 breathable grille, 346 tightening handle, 347 edge claw, 348 reserved expansion area, 349 tightening screw, 3410 guide rib, 3411 glue groove ;

350 sealing rubber ring;

360 air intake shroud assembly;

361 air shroud monomer, 362 rectangular breathable film, 363 dustproof breathable cover, 364 annular breathable film, 365 air channel, 366 friction welding surface, 367 screw holes, 368 positioning pin holes, 369 adhesive layer, 3610 limit groove , 3611 guide ribs;

370 support frame;

371 ventilation holes, 372 positioning pins;

400b temperature and humidity sensor;

401b temperature sampling circuit;

400d temperature and humidity sensor;

401d temperature sampling circuit;

402d humidity sampling circuit;

500 barometric pressure sensor;

501 pressure sampling circuit;

600 ventilation holes;

700 Motor Control Circuit.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention, but not to limit the invention.

In order to completely solve the fog problem of the light distribution mirror of the headlight, the present invention proposes a replaceable automatic moisture absorption device for automobile lamps, which is fixed on the headlight shell by the edge claws and can be replaced manually; combined with the input of the sensor in the lamp The signal control can replace the open working mode of the automatic moisture absorption device, so as to realize the continuous absorption and elimination of moisture in the lamp and balance the pressure difference between the inside and outside of the headlamp, so as to realize the function of intelligent defogging of the headlamp.

The replaceable automatic moisture absorption device for automobile lamps provided by the present invention has the advantages of simple installation method, replaceable device, cyclic use, and precise and convenient control.

Fig. 2 shows a schematic diagram of fixing a replaceable automatic moisture absorption device and a sensor in a lamp housing according to an embodiment of the present invention. As shown in Fig. 2, a replaceable automatic moisture absorption device 300 for an automobile lamp proposed by the present invention can be combined with the previous one. The headlight housing shall be matched and installed according to the pressing and rotating method, and the headlight with the replaceable automatic moisture absorption device of the automobile lamp is defined as the automatic defogging intelligent headlight, including the following characteristics:

1) Cancel the ventilation hole structure and ventilation elbow, so that the headlights are in a closed state.

2) A humidity sensor is installed inside the headlight near the replaceable automatic moisture absorption device 300 and on the headlight housing 200 to measure the moisture content inside the headlight and the external environment of the engine compartment, as a replaceable automatic moisture absorption for automobile lamps The device 300 turns on the input condition of the control.

3) Add an atmospheric pressure sensor inside the headlight to measure the internal pressure of the headlight. Since the headlight is in a closed state under normal conditions, the temperature in the light after all functions are turned on, the pressure rises rapidly, and light distribution may occur. In the case of mirror burst, it is necessary to control the opening strategy of the replaceable automatic moisture absorption device 300 according to the real-time pressure change inside the headlight.

Fig. 3a shows an enlarged view of the replaceable automatic moisture absorbing device for automobile lamps at the installation position A according to an embodiment of the present invention. As shown in Fig. 3a, the replaceable automatic moisture absorbing device 300 for automobile lamps is vertically extending from the bottom of the headlight housing 200 as shown in Fig. 3a. Install up.

The housing of the replaceable automatic moisture absorbing device 300 for automobile lamps is cylindrical as a whole, and the diameter is slightly smaller than the size of the mounting through hole of the headlight housing 200, so as to realize clearance fit and facilitate installation.

Three rectangular notches 201 are reserved at the edge of the mounting through hole of the headlight housing 200 .

The automatic moisture absorption device 300 can be replaced by the automobile lamp, and three edge claws 347 are reserved around the outside.

During the installation process, the edge claws 347 pass through the rectangular notch 201 of the headlight housing 200 and are pressed firmly to ensure that the sealing rubber ring 350 is pressed tightly, and the tightening handle 346 at the bottom of the automatic moisture absorption device 300 can be replaced by the automobile lamp. Rotate 20° to 30° clockwise, so that the replaceable automatic moisture absorption device 300 for automobile lamps is firmly installed on the headlamp housing 200 .

In terms of structure and installation size, the automatic moisture absorption device 300 can be replaced by the automobile lamps, and the installation plane of the headlight shell 200 exposed in the tightened state is only 26mm, which is small in size and does not affect the far and near beam modules, dimming brackets, etc. The arrangement of the structure is suitable for automobile lamps of various light sources.

Figures 3b and 3d respectively reveal enlarged views of the temperature and humidity sensors at the installation position B and the installation position D shown in Figure 2. As shown in Figures 3b and 3d, the temperature and humidity sensors include a temperature and humidity sensor 400b and a temperature and humidity sensor 400d, respectively installed in the installation position B and the installation position D shown in FIG. 2 . The temperature and humidity sensor is a chip type and is soldered on the circuit board through pins.

As shown in FIG. 3b, the circuit board with the temperature and humidity sensor 400b is fixed inside the headlight housing 200 by screws, and is installed near the replaceable automatic moisture absorption device 300 for automobile lamps. In the installation position B shown in FIG. 2, Measure the moisture content and temperature inside the headlight.

As shown in FIG. 3d , the circuit board with the temperature and humidity sensor 400d is fixed on the outer upper end of the headlight housing 200 by screws, at the installation position D in the embodiment shown in FIG. 2 . Since the upper end of the headlight housing 200 has water ingress, a plastic cover is added to the outside of the circuit board with the temperature and humidity sensor 400b to protect the circuit board and prevent the circuit board from being wet and short-circuited and causing the whole vehicle to alarm.

The temperature and humidity sensors installed inside the headlight and on the headlight housing 200 measure the moisture content inside the headlight and in the engine compartment (external environment), which is used as an input condition for the opening control of the replaceable automatic moisture absorption device 300 for automobile lamps. In this embodiment, the temperature and humidity sensor is mainly used to measure the moisture content, and the temperature is not used as an input condition for the start-up control of the replaceable automatic moisture absorption device 300, so a humidity sensor can also be used instead.

FIG. 3c shows an enlarged view of the atmospheric pressure sensor at the installation position C shown in FIG. 2. As shown in FIG. 3c, the atmospheric pressure sensor 500 is installed inside the headlamp housing 200, and the atmospheric pressure sensor 500 is welded on the inside of the headlight housing 200 by soldering. On the circuit board, there are four screw holes around the circuit board. The atmospheric pressure sensor 500 is installed inside the headlight housing 200 through screws, wherein the atmospheric pressure sensor 500 is as close as possible to the light distribution mirror of the headlight.

An atmospheric pressure sensor 500 is added inside the headlight to measure the internal pressure of the headlight. Since the headlight is in a closed state under normal conditions, the temperature in the light after all functions are turned on, and the pressure rises rapidly. In the case of bursting, it is necessary to control the opening strategy of the replaceable automatic moisture absorption device 300 of the automobile lamp according to the real-time pressure change inside the headlight.

There are certain ventilation holes on the traditional headlight shell, which are connected to the ventilation holes through the ventilation elbow. The inlet and outlet of the tube combination can reduce the risk of fogging of the whole lamp.

Figures 4 and 5a respectively show a front view and a bottom view of the structure of an intelligent headlight for an automobile with automatic defogging according to an embodiment of the present invention. Installed in the headlight of the car, the headlight housing 200 completely cancels the structure of the ventilation hole 600 and removes the ventilation elbow, so that the whole lamp is closed and the cost is reduced. The air pressure in the lamp can actively absorb and dehumidify, and completely solve the risk of fogging of the headlight lens.

Fig. 5b shows the cross-sectional view E-E of the structure of the intelligent headlight structure of the automatic defogging automobile in Fig. 5a, and Fig. 6a-Fig. 7a respectively reveal the axonometric view and the exploded view of the structure of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention Fig. 7b shows the F-F cross-sectional view of the structure of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention in Fig. 7a, and Fig. 8 discloses the partial structural installation of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention. As shown in Fig. 5b-Fig. 8, the replaceable automatic moisture absorption device 300 for automobile lamps of the present invention includes an upper air intake mechanism, a stepping motor 330, a lower exhaust mechanism, a sealing rubber ring 350 and a support frame 370.

The upper air intake mechanism includes an upper transmission shielding plate 310 and an air intake shroud assembly 360 .

The lower exhaust mechanism includes a housing assembly 340 and a lower transmission shielding plate 320 .

The auto moisture absorption device 300 can be replaced by automobile lamps, and the interior mainly relies on the stepper motor 330 to push the upper transmission shutter 310 and the lower transmission shutter 320 to move vertically, controlling the opening mode of the replaceable automatic moisture absorption device 300 for the automobile lamps, and realizing the interior of the headlight. There are three working modes of moisture absorption, external moisture removal, and internal and external ventilation, and the opening of these three working modes is determined by the input parameters of the temperature and humidity sensors inside and outside the lamp, and the atmospheric pressure sensor to realize the automation and intelligence of headlight defogging. Thereby, an automatic defogging intelligent headlight structure is produced.

Figures 9a and 9b respectively disclose the first and second axonometric views of the upper transmission shielding plate structure according to an embodiment of the present invention. As shown in Figures 9a and 9b, the upper transmission shielding plate 310 and the lower transmission shielding plate The structures of the plates 320 are completely the same. The upper transmission shielding plate 310 and the lower transmission shielding plate 320 are vertically opposite to each other, located at both ends of the stepping motor 330, and are spatially dislocated by 45°.

The above transmission shielding plate 310 is taken as an example. The upper transmission shielding plate 310 has a threaded hole in the middle which is matched with the transmission worm 331.

In order to ensure that the upper transmission shielding plate 310 and the lower transmission shielding plate 320 can move vertically, the upper transmission shielding plate 310 has four guide grooves 311 on the edge for matching the guide ribs 3611 in the air intake shroud assembly 360, and The guide grooves on the edge of the lower transmission shielding plate 320 are used to cooperate with the guide ribs 3410 in the housing assembly 340 to play a guiding and limiting role.

The upper transmission shielding plate 310 has four small-sized limit top ribs 312 on the upper part, which are used to cooperate with the limit grooves 3610 in the air intake shroud assembly 360, and the limit top ribs of the lower transmission shield plate 320 are It is matched with the limit groove of the housing assembly 340 .

The upper transmission shielding plate 310 has four shielding curved plates 313 on the lower edge, which are used to shield the air passage 365 of the air intake shroud assembly 360, and form contact with the upper end surface of the stepping motor 330 in the first working mode limit.

The shielding curved plate of the lower transmission shielding plate 320 is used to shield the ventilation grille 345 in the housing assembly 340, and forms a contact limit with the lower end surface of the stepping motor 330 in the second working mode.

In order to ensure the strength of the structure, a reinforcing rib is added to the lower part of the upper transmission shielding plate 310 .

The stepping motor 330 adopts the 35BY24H01 permanent magnet stepping motor. The driving method of the stepping motor 330 needs to integrate the input parameters of the temperature and humidity sensors inside the headlight and the engine compartment and the atmospheric pressure sensor inside the headlight. The logic control is used to drive the stepping motor 330 to operate. Optionally, the control logic of the stepper motor can be defined as one rotation or two rotations.

Both ends of the stepping motor 330 are fixed with a transmission worm 331 through flat keys, and the transmission worm 331 is made of an alloy material.

The upper transmission shielding plate 310 and the lower transmission shielding plate 320 are provided with matching threaded holes in the middle. When the stepping motor 330 rotates, the upper transmission shielding plate 310 and the lower transmission shielding plate 320 are driven to move up and down synchronously.

The transmission worm 331 has a round hole at the bottom and a flat keyway, which is used to connect the stepping motor 330 to transmit power.

The transmission worm 331 has a cylindrical protrusion at the top, which is used to cooperate with the dust-proof ventilation cover 363 and the worm guide hole 332 in the casing structure, and plays the role of support and rotation guide, which is convenient for the stability of the worm power output. The upper transmission shielding plate 310 and the lower transmission shielding plate 320 are prevented from being stuck.

When the transmission worm 331 cooperates with the dust-proof ventilation cover 363 and the worm guide hole 332 in the housing structure, a certain gap is left, and there is a certain amount of lubricating oil in the gap, which is convenient for the normal operation of the mechanism.

Figures 10a-11a respectively disclose an axonometric view, a bottom view and a top view of the casing assembly structure according to an embodiment of the present invention, Figure 11b discloses a J-J cross-sectional view of the casing assembly structure of Figure 11a, Figure 11a is an I-I cross-sectional view of the casing assembly structure. As shown in Figures 10a to 11c, the casing assembly 340 of the present invention includes a casing 341, a moisture absorbing material 342, an annular breathable membrane 343, four rectangular breathable Membrane 344 and four ventilation grilles 345.

The shell 341 has four openings at the bottom, distributed at 90° intervals, and communicates with the four moisture-absorbing cavities of the shell. moisture and release moisture to the outside of the headlights. Both ends of the hygroscopic cavity retain reserved expansion areas 348 to provide an expansion space for the hygroscopic material 342 .

The shell 341 has four rectangular through holes at the bottom of the moisture absorption cavity toward the center, which are used for airflow circulation, and a rectangular breathable film 344 and a breathable grille 345 are respectively fixed at each rectangular through hole, so that moisture can be directed to the lamp. external circulation.

The annular air-permeable membrane 343 is pasted on the ventilation holes at the bottom of the casing 341 to play the role of ventilation and dust isolation.

The casing 341 has a cylindrical shape as a whole, and a plurality of edge claws 346 are arranged around the casing for connection and fixing with the headlight casing 200 , and the fixing method is a rotating fixing method.

The housing 341 has four tightening handles 347 at the bottom edge, which facilitates the installation and removal of the replaceable automatic moisture absorption device 300 on the headlight. The diameter of the shell cylindrical surface of the replaceable automatic moisture absorption device for automobile lamps is slightly smaller than the installation diameter of the headlight shell, which is convenient for installation.

The housing 341 has a square hole in the middle for accommodating the geometric size of the stepping motor.

In the casing 341 , the middle bottom area is cylindrical, and four guide ribs 3410 are left on the edge for matching with the lower transmission shielding plate 320 .

The casing 341 has a glue groove 3411 on the edge, and the casing 341, the air intake shroud assembly 361 and the support frame 370 are fixed together by means of gluing.

The casing 341 has a fan-shaped slot hole at the bottom as a ventilation hole, and a worm guide hole 332 is left in the middle of the bottom to facilitate the cooperation of the transmission worm 331 .

Considering the differences in the structure of the headlights of different models, the reserved structural dimensions of the headlight housing 200 are also different, and the required amount of the moisture-absorbing material 342 is also different. The device 300 may need to change the mounting diameter and height of the housing 341, so other mounting structures of the same type (specifically, different mounting diameters and different heights) are within the scope of the present invention.

In particular, a certain amount of moisture-absorbing material 342 is placed inside the replaceable automatic moisture-absorbing device 300 for automobile lamps, generally in three sizes of 20g, 25g, and 30g. In order to better meet the needs of headlight defogging, the specific amount of moisture-absorbing material 342 A single lamp type needs to be adjusted, but considering the difference in the volume of the headlamp cavity, the actual defogging needs of different headlamps can be matched by increasing the shell height of the replaceable automatic moisture absorption device of the automobile lamp, and the moisture absorption material is reasonably configured. Quality, avoid waste, in the case of ensuring no fog in the lamp, try to use a small amount of hygroscopic material to save costs.

The hygroscopic material 342 mainly adopts the combination of MgCl2 and CaO supplemented by other components, wherein the ratio of MgCl2:CaO is more than 2:1. Among them, MgCl2 easily combines with water molecules to form a mixture of MgCl2 6H2O and MgCl2 12H2O. However, the stability of MgCl2 6H2O and MgCl2 12H2O is slightly worse. After the external environment changes (the humidity is significantly reduced or the temperature is increased), it returns to MgCl2 state and release water vapor. CaO is mainly used as a long-acting drying component, which forms a hardened calcium-containing compound after absorbing water, and MgCl2 is used as a fast hygroscopic material.

Fig. 12 discloses an axonometric view of the ventilation grille structure according to an embodiment of the present invention. The ventilation grille 345 shown in Fig. 12 is a fan-shaped curved plate as a whole, and has some square ventilation holes 371 for ventilation.

The rectangular breathable film 344 is directly pasted on the breathable grille 345. Since the breathable film is soft and thin, the same material as the breathable film in the air intake shroud assembly 360 is used.

The sealing rubber ring 350 is directly sleeved on the outside of the housing 341 of the replaceable automatic moisture absorbing device 300 for automobile lamps. During the process of fixing the replaceable automatic moisture absorbing device 300 for automobile lighting on the housing of the headlight, the thickness of the sealing rubber ring 350 will be compressed. , plays the role of sealing the headlight, and ensures the good air tightness of the replaceable automatic moisture absorption device 300 installed in the headlight space.

Figures 13a-14a and Figure 15b respectively disclose the axonometric view, exploded view, front view and bottom view of the structure of the air intake shroud assembly according to an embodiment of the present invention, and Figure 14b discloses the intake air shroud according to Figure 14a. The H-H cross-sectional view of the air shroud assembly, Fig. 15a shows the axonometric view of the single structure of the shroud according to an embodiment of the present invention, as shown in Figs. 13a-15b, the air intake shroud is generally It is formed into 360, including a dust-proof air-permeable cover 363, an annular air-permeable film 364, four air guide cover units 361 and four rectangular air-permeable films 362.

Due to the limitation of the overall structure of the air intake shroud assembly 360 , integrated injection molding cannot be performed, so the air intake shroud assembly 360 is divided into four air shroud units 361 as a whole.

The side surfaces of the shroud monomers 361 are milled flat, and the friction welding surfaces 366 of the four shroud monomers 361 are welded together by friction welding.

The shroud unit 361 has a rectangular groove at the bottom for fixing the rectangular air-permeable membrane 362 .

Glue is left around the two sides of the rectangular breathable film 362, which is used to stick in the rectangular groove formed by the combination of the two air shroud monomers 361, so as to ensure that the replaceable automatic moisture absorption device 300 will not fall during the assembly process. .

The air channels 365 on both sides of the air shroud unit 361 are mainly used to guide the moisture inside the headlamp into the cavity where the moisture absorbing material 342 is located.

A screw hole 367 is left on the bottom surface of the air shroud unit 361 for connecting the stepping motor 330 , and a positioning pin hole 368 is left on the back side for matching with the positioning pin 372 of the support frame 370 .

The edge of the shroud unit 361 is provided with an annular raised structure, which is used to limit the position of the support frame 370 to ensure that the lower plane of the annular bulge of the shroud unit 361 is flush with the lower plane of the edge of the support frame 370, which is convenient for the housing 341 The glue groove 3411 is bonded, and the structure is more stable.

The air intake shroud assembly 360 is fixed together by four fastening screws 349 around the stepping motor 330 .

The guide groove 311 of the upper transmission shielding plate 310 cooperates with the guiding ribs 3611 of the air intake shroud assembly 360, which restricts the shielding surface of the shielding curved plate 313 of the upper transmission shielding plate 310 to correspond to the intake air shroud assembly 360. Below the air channel 365 , the upper transmission shielding plate 310 will gradually block the exposed area of the air channel 365 until it is completely closed during the upward movement of the upper transmission shielding plate 310 .

Limiting grooves are reserved on the air intake shroud assembly 360 and the housing 341 for cooperating with the limiting ribs in the upper transmission shielding plate 310 and the lower transmission shielding plate 320 to limit the upper transmission shielding plate 310 , The position of the lower transmission shielding plate 320 to prevent the structure from leaking.

The air duct unit 361 has a circle of limiting grooves 3610 at the upper end of the air channel 365 for cooperating with the limiting top rib 312 of the upper transmission shielding plate 310 .

Fig. 16a shows a perspective view of the structure of a dust-proof and ventilating cover according to an embodiment of the present invention. As shown in Fig. 16a, a dust-proof and ventilating cover 363 is vertically fixed on four air-guiding cover units 361 by gluing. on the overall structure.

A certain fan-shaped slot hole is formed on the structure of the dust-proof ventilation cover 363 , and a piece of annular ventilation film 364 is pasted on the lower part of the dust-proof ventilation cover 363 .

The annular breathable film 364 and the rectangular breathable film 362 are made of the same material and thickness, and the breathable film has good air permeability and dust-blocking effect, which facilitates the circulation of moist air inside the headlight housing and the blocking of dust.

Fig. 16b shows a perspective view of the structure of a support frame according to an embodiment of the present invention. As shown in Fig. 16b, the support frame 370 is in the shape of a disk as a whole, and four rectangular grooves are left around it. The hole 371, the ventilation hole 371 is square, and a rectangular ventilation film is pasted in the rectangular groove.

Four positioning pins 372 are left at the periphery of the support frame 370, which play a role of pre-positioning during the process of installing the support frame 370 on the air intake shroud assembly 360 from the lower side.

In order to avoid the space for the installation structure of the stepping motor 330 and ensure the air tightness of the replaceable automatic moisture absorption device 300, the middle of the support frame 370 has a square concave structure, and the back of the support frame 370 has a square convex structure to ensure the same wall thickness of the support frame. It is convenient for injection molding and prevents the occurrence of shrinkage.

A circular hole is left in the middle of the support frame 370, and the size is slightly larger than the outer diameter of the cylindrical surface of the stepping motor 330, which is convenient for installation and avoids interference.

The circular hole in the middle of the support frame 370 passes through the stepping motor 330, and the side wall structure of the circular hole in the middle of the support frame 370 ensures that the moisture inside the headlight can only flow through the air channel and the rectangular breathable membrane of the air intake shroud assembly. The hygroscopic material 342 in the housing 341 absorbs moisture and does not enter the cavity where the stepping motor 330 is located, thereby causing air leakage.

The support frame 370 is mounted on the bottom of the air intake shroud assembly 360 from the bottom through positioning pins, and presses the rectangular air permeable membrane.

There is a rectangular protruding structure at the bottom of the support frame 370, which is used for limit matching with the housing 341, and the positioning is accurate.

The replaceable automatic moisture absorbing device 300 for automobile lamps of the present invention has three working modes, including an inner circulation mode, an outer circulation mode, and an inner and outer circulation mode.

Fig. 17a shows a schematic structural diagram of the replaceable automatic moisture absorbing device for automobile lamps in the first working mode according to an embodiment of the present invention, and Figs. 17b and 17c respectively reveal the A-A section of the replaceable automatic moisture absorbing device for automobile lamps shown in Fig. 17a The cross-sectional view and the cross-sectional view of the B-B section, as shown in Figures 17a-17c, the first working mode of the replaceable automatic moisture absorption device 300 for automobile lamps is the internal circulation mode, and the internal circulation mode is the common state of the replaceable automatic moisture absorption device 300 for automobile lamps. Used to absorb headlight moisture.

When the replaceable automatic moisture absorption device 300 for automobile lamps is in the first working mode-internal circulation mode, it can be seen from FIG. 17b that when the air intake shroud assembly 360 and the stepping motor 330 are fixed, the upper transmission shielding plate 310 The bottom shielding curved plate 313 is in contact with the upper end surface of the stepping motor 330, the limit top rib 312 of the upper transmission shielding plate 310 is flush with the lower edge of the air channel 365 of the air intake shroud assembly 360, and the four air channels are completely Open, do not block the air passage, to ensure that the moist air in the lamp can enter the replaceable automatic moisture absorption device 300, and use the moisture absorption material 342 to absorb moisture.

It can be seen from FIG. 17c that when the housing assembly 340 and the stepping motor 330 are fixed, the bottom of the lower transmission shielding plate 320 keeps a certain distance from the lower end surface of the stepping motor 330, and the limit top rib of the lower transmission shielding plate 320 It is matched with the limiting groove of the housing assembly 340. At this time, the guide groove of the lower transmission shielding plate 320 cooperates with the guiding ribs of the casing assembly 340. The shielding surface of the shielding curved plate of the lower transmission shielding plate 320 is exactly the same as the casing. The position of the ventilation grille 345 of the body assembly 340 is in complete contact to form a closed environment, so that the whole lamp is in a sealed state.

At this time, the humid air in the headlight housing can reach the moisture absorbing material 342 through the dust ventilating cover 363-annular ventilating membrane 364-air channel-rectangular ventilating membrane 362 to absorb moisture.

Therefore, the first working mode, the internal circulation mode, realizes the effect of continuously absorbing the moisture inside the headlight.

Fig. 18a shows a schematic diagram of the structure of the replaceable automatic moisture absorption device for automobile lamps in the second working mode according to an embodiment of the present invention, and Figs. 18b and 18c respectively disclose the A-A section of the replaceable automatic moisture absorption device for automobile lamps shown in Fig. 18a 18a-18c, the second working mode of the replaceable automatic moisture absorption device 300 for automobile lamps is the external circulation mode, and the external circulation mode is the second starting mode of the replaceable automatic moisture absorption device 300 for automobile lamps , mainly used to remove moisture from headlights.

When the replaceable automatic moisture absorbing device 300 for automobile lamps is in the second working mode-outer circulation mode, it can be seen from FIG. 18b that the limiting top ribs of the upper transmission shielding plate 310 and the limiting grooves of the air intake shroud assembly 360 Together, the bottom shielding plate of the shielding curved plate 313 of the upper transmission shielding plate 310 is in complete contact with the air channel, preventing the air inside the headlight from flowing into the air channel, and the four air channels are completely closed.

During the upward movement of the lower transmission shielding plate 320, the contact area between the ventilation grille 345 and the lower transmission shielding plate 320 will gradually become smaller, and more area of the ventilation grille 345 will be in contact with the air outside the lamp until the ventilation grille 345 is fully opened.

It can be seen from FIG. 18c that the bottom shielding plate of the lower transmission shielding plate 320 is in contact with the lower end surface of the stepping motor 330, and the limit top ribs of the lower transmission shielding plate 320 are flush with the upper edge of the ventilation grille 345, that is, four The ventilating grille 345 is fully opened, so that the moisture in the hygroscopic material 342 can pass through the hygroscopic material 342-rectangular ventilating film 344-ventilating grille 345-annular ventilating film 343-ventilating holes at the bottom of the housing to the engine compartment (environment outside the lamp).

Therefore, the second working mode—the external circulation mode, realizes the continuous elimination of the moisture inside the headlight absorbed in the moisture absorbing material 342 in the early stage. The second working mode is relative to the first working mode. The stepping motor 330 rotates twice, and the transmission worm 331 reaches maximum travel.

Fig. 19a shows a schematic structural diagram of a replaceable automatic moisture absorbing device for automobile lamps in a third working mode according to an embodiment of the present invention, and Fig. 19b and Fig. 19c respectively reveal the A-A section of the replaceable automatic moisture absorbing device for automobile lamps shown in Fig. 19a 19a-19c, the third working mode of the replaceable automatic moisture absorption device 300 for automobile lamps is the internal and external circulation mode, and the internal and external circulation mode is the third starting mode of the replaceable automatic moisture absorption device 300 for automobile lamps , mainly used to connect the headlights with the outside air, reduce the air pressure inside the headlights, and prevent the light distribution mirror from bursting.

When the replaceable automatic moisture absorption device 300 for automobile lamps is in the third working mode-internal and external circulation mode, it can be seen from FIG. 19b that the bottom shielding plate of the shielding curved plate 313 of the upper transmission shielding plate 310 and the upper end surface of the stepping motor 330 remain There is a certain distance, the limit top rib 312 of the upper transmission shielding plate 310 is flush with the middle of the air channel 365, and the four air channels 365 are in a semi-open state.

It can be seen from FIG. 19c that there is a certain distance between the bottom shielding plate of the lower transmission shielding plate 320 and the lower end face of the stepping motor 330, and the limiting top rib of the lower transmission shielding plate 320 is flush with the middle of the ventilation grille 345, that is, The four ventilation grilles 345 are in a semi-open state. Since the high-pressure air inside the headlight is sprayed from the bottom vent hole of the replaceable automatic moisture absorption device 300 of the automobile lamp, the moisture-absorbing material 340 will only absorb the humidity of the air sprayed from the headlight in this process, but will not absorb the humidity of the external environment. , does not affect the moisture absorption function.

In this state, the air flow direction is: air in the lamp (high pressure) - dustproof and ventilating cover 363 - annular breathable film 364 - air channel - rectangular breathable film 362 - hygroscopic material 342 - rectangular breathable film 344 - breathable grille 345 - annular breathable Membrane 343 - vent hole at the bottom of the housing - engine compartment (environment outside the lamp).

Therefore, the third working mode, the internal and external circulation mode, can balance the relative pressure between the headlights and the external environment. Since the headlights are in the closed state in the first working mode and the second working mode, it is easy to cause the phenomenon that the air pressure in the lamp is too large or too small. When the bursting phenomenon occurs, the third working mode is relative to the first working mode, the stepper motor 330 rotates one circle, and the transmission worm 331 reaches half of the maximum stroke.

Fig. 20 is a logic diagram showing the start-up control logic of the working mode of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention. As shown in Fig. 20, the temperature and humidity sensor 400d outside the lamp measures the temperature and humidity outside the lamp, and samples the temperature The circuit 401d converts the temperature and sends it to the ECU, the humidity sampling circuit 402d converts the humidity and sends it to the ECU, the lamp temperature and humidity sensor 400b measures the humidity in the lamp, and the temperature sampling circuit 401b converts the temperature and sends it to the ECU, The atmospheric pressure sensor 500 in the lamp measures the air pressure in the lamp. The pressure sampling circuit 501 converts the air pressure and sends it to the ECU. The ECU controls the stepping motor 300 through the motor control circuit 700 according to the received humidity and air pressure parameters.

The turn-on control logic conditions of the replaceable automatic moisture absorption device 300 for automobile lamps include the following conditions:

The opening control logic of the first working mode:

1) When the humidity in the headlights in summer (measured by the humidity sensor in the lamp) is between the first humidity threshold and the second humidity threshold, and when the humidity content in the headlights in winter is above the third humidity threshold, the first humidity threshold is 60%, the second humidity threshold is 90%, and the third humidity threshold is 40%.

2) The condition that the air humidity content inside the headlight is lower than the air humidity content in the engine compartment (measured by the humidity sensor at the lamp housing);

If any one of the above conditions is met, the replaceable automatic moisture absorption device is switched to the first working mode.

The opening control logic of the second working mode:

1) The humidity content in the headlights in summer (measured by the humidity sensor in the lamp) is below the first humidity threshold, and the humidity content in the headlights in winter is below the third humidity threshold;

2) The condition that the air humidity content inside the headlight is higher than the air humidity in the engine compartment (measured by the humidity sensor at the lamp housing);

If any one of the above conditions is met, the replaceable automatic moisture absorption device can be switched to the second working mode.

The opening control logic of the third working mode:

1) The internal atmospheric pressure of the headlamp (measured by the atmospheric pressure sensor in the lamp) is higher than the first air pressure threshold or lower than the second air pressure threshold;

2) For the sake of safety, the priority of turning on the third working mode is higher than that of the first working mode and the second working mode.

FIG. 21 shows a schematic diagram of the assembly method of the replaceable automatic moisture absorption device for automobile lamps according to an embodiment of the present invention. As shown in FIG. 21 , the assembly method of the replaceable automatic moisture absorption device 300 for automobile lamps is as follows:

S1. Install and fix the transmission worm 331 at both ends of the stepping motor 330 through flat keys, and pre-tighten the fastening screws on the stepping motor 330. The stepper motor 330 is matched and installed,

From the perspective of the overall axonometric view, the upper transmission shielding plate 310 and the lower transmission shielding plate 320 are required to be vertically opposite to each other, and be installed at a difference of 45°.

S2. Install the air intake shroud assembly 360 on the stepper motor 330 from the vertical downward through four fastening screws, so that the guide groove of the upper transmission shield 310 and the air intake shroud assembly 360 are guided The guide grooves of the lower transmission shielding plate 320 are matched with the guide ribs of the housing assembly 340. In the state where the tightening screws are pressed, the protruding heads of the drive worms 331 at both ends will embed the dust-proof ventilation cover 363 and the housing. The worm guide hole 332 at the bottom; the support frame 370 is fixed on the air intake shroud assembly 360 through the cooperation of the positioning pin 372 and the positioning pin hole from the vertical upward, and the rectangular breathable membrane 362 is pressed tightly.

S3. Fix the housing assembly 340 on the air intake shroud assembly 360 and the support frame 370 by gluing from the bottom up, and set the sealing rubber ring 350 on the housing assembly 340 to complete the replacement Assembly of the automatic absorbent device 330.

The invention provides a replaceable automatic moisture absorption device for automobile lamps, which can absorb and remove moisture in the lamp, balance the pressure difference in the lamp, and realize the function of automatic and intelligent defogging of the headlamp.

The replaceable automatic moisture absorption device for automobile lamps provided by the present invention has the following beneficial effects:

1) The humidity sensor and atmospheric pressure sensor inside and outside the lamp can be combined to control the opening mode of the replaceable automatic moisture absorption device to perform intelligent dehumidification and avoid fogging of the headlight light distribution mirror;

2) The headlights of the replaceable automatic moisture absorption device using automobile lamps adopt a fully enclosed structure, and the pressure difference between the inside and outside of the lamp can be freely adjusted through the third working mode to avoid the problem of bursting of the light distribution mirror or the light bulb;

3) The replaceable automatic moisture absorption device for automobile lamps has a simple assembly method and a clear control logic;

4) The structure of the replaceable automatic moisture absorption device for automobile lamps can be adjusted, which is convenient to match different types of lamps, easy to install, and can be replaced and recycled;

5) The replaceable automatic moisture absorption device for automobile lamps can be equipped with different quality moisture absorption materials to form batch products of different specifications. According to the actual fog situation in the lamp, different grades of replaceable mist absorber fixing assemblies can be reasonably configured to avoid material waste.

Although the above-described methods are illustrated and described as a series of acts for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the acts, as some acts may occur in a different order in accordance with one or more embodiments and/or occur concurrently with other actions from or not shown and described herein but understandable to those skilled in the art.

As shown in this application and in the claims, unless the context clearly dictates otherwise, the words "a", "an", "an" and/or "the" are not intended to be specific in the singular and may include the plural. Generally speaking, the terms "comprising" and "comprising" only imply that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

The above-mentioned embodiments are provided for those skilled in the art to realize or use the present invention, and those skilled in the art can make various modifications or changes to the above-mentioned embodiments without departing from the inventive concept of the present invention. The protection scope of the present invention is not limited by the above-mentioned embodiments, but should be the maximum scope conforming to the innovative features mentioned in the claims.

Claims (16)

1. A replaceable automatic moisture absorption device for automobile lamps, characterized in that, being installed on the headlight housing, further comprising a stepper motor, an upper-end air intake mechanism and a lower-end exhaust mechanism: The upper air intake mechanism includes an upper transmission shielding plate and an air intake shroud assembly; The lower-end exhaust mechanism includes a casing assembly and a lower transmission shielding plate, and a moisture-absorbing material is arranged inside the casing assembly; One end of the stepping motor is connected with the upper transmission shielding plate, and the other end is connected with the lower transmission shielding plate. The relative vertical position of the vehicle is changed, and the corresponding working mode of the automatic moisture absorption device can be changed by controlling the automobile lamps, and the opening or closing of the upper air intake mechanism and the lower exhaust mechanism can be controlled. external pressure difference. 2. The replaceable automatic moisture absorption device for automobile lamps according to claim 1 is characterized in that: The upper transmission shielding plate has a guide groove on the edge, which cooperates with the guide rib of the air intake shroud assembly to carry out vertical guiding and limiting; The upper transmission shielding plate has a limit top rib on the upper part, which is matched with the limit groove of the air intake shroud assembly; The lower transmission shielding plate shown has a guide groove on the edge, which cooperates with the guide rib of the shell assembly to carry out vertical guide limit; The lower transmission shielding plate has a limit top rib at the lower part, which is matched with the limit groove of the casing assembly. 3 . The replaceable automatic moisture absorption device for automobile lamps according to claim 2 , wherein the air intake shroud assembly comprises a dust-proof ventilating cover, an annular ventilating film, several shroud monomers and a rectangular ventilating cover. 4 . membrane: The shroud is a single body, with a rectangular groove at the bottom for fixing the rectangular breathable membrane; The single body of the shroud has air passages on both sides, and is in contact with the shielding curved plate left on the edge of the upper transmission shielding plate through vertical movement to guide the internal moisture of the headlight into the inner cavity of the casing assembly; The dust-proof and ventilating cover is vertically fixed on the overall structure formed by several shroud monomers; The dust ventilating cover has a fan-shaped slot hole on the surface, and a ring-shaped ventilating film is fixed at the lower part of the dust ventilating cover. 4. The replaceable automatic moisture absorption device for automobile lamps according to claim 1 is characterized in that: The upper transmission shielding plate and the lower transmission shielding plate are provided with matching threaded holes in the middle, which are used to connect the stepping motor and transmit power to move up and down synchronously; The two ends of the stepping motor are connected with a drive worm through a flat key, and the drive worm is matched with the upper drive shielding plate and the threaded hole of the lower drive shield, and the stepper motor is driven by a set drive logic. 5. The replaceable automatic moisture absorption device for automobile lamps according to claim 2, wherein the housing assembly further comprises a housing, an annular breathable film, a rectangular breathable film and a breathable grille: The shell has a plurality of rectangular through holes at the bottom, which communicate with the moisture absorption cavity of the shell; The rectangular breathable film and the breathable grille are fixed on the rectangular through holes, and are in contact with the shielding curved plate left on the edge of the lower transmission shielding plate through vertical movement, so as to guide the moisture to flow out of the lamp; the hygroscopic material is arranged inside the hygroscopic cavity; The shell has a fan-shaped slot hole at the bottom as a ventilation hole, and the annular ventilation film is fixed on the ventilation hole at the bottom of the shell. 6. The replaceable automatic moisture absorption device for automobile lamps according to claim 5 is characterized in that: A square hole is left in the middle of the casing for accommodating the stepping motor; The casing has a glue groove on the edge, which is fixedly connected with the air intake shroud assembly; The bottom edge of the casing is provided with several tightening handles, which are used for the installation and removal of the replaceable automatic moisture absorption device of the automobile lamp on the headlight. 7 . The replaceable automatic moisture absorption device for automobile lamps according to claim 5 , wherein the ventilation grille is a fan-shaped curved plate as a whole, with several through holes on the surface, and a rectangular ventilation film is fixed on the ventilation grille. 8 . 8 . The replaceable automatic moisture absorption device for automobile lamps according to claim 5 , further comprising a sealing rubber ring, which is sleeved on the outside of the casing to ensure that the replaceable automatic moisture absorption device for automobile lamps is installed on the headlight space. 9 . Air tightness. 9. The replaceable automatic moisture absorption device for automobile lamps according to claim 1, characterized in that, further comprising a support frame: The support frame is in the shape of a plate as a whole, and there are several rectangular grooves around, and a ventilation hole is opened in the rectangular groove, and a rectangular breathable film is fixed in the rectangular groove; The support frame is provided with a circular hole in the middle, and the stepping motor passes through the circular hole; The support frame is provided with several positioning pins around it, which are positioned with the bottom of the air intake shroud assembly and are installed together; The support frame is provided with a rectangular protruding structure at the bottom, which is used for limit fit installation with the housing assembly. 10 . The replaceable automatic moisture absorption device for automobile lamps according to claim 1 , wherein the moisture absorption material adopts a combination of MgCl2 and CaO, wherein the ratio of MgCl2 : CaO is more than 2:1. 11 . 11 . The replaceable automatic moisture absorbing device for automobile lamps according to claim 5 , wherein the working mode includes a first working mode, and the replaceable automatic moisture absorbing device for automobile lamps absorbs the moisture of the headlights in the first working mode. 12 . : The limit top rib of the upper transmission shield is flush with the lower edge of the air channel of the air intake shroud assembly, the air channel is fully opened, and the moisture inside the headlight passes through the air channel in the air intake shroud assembly reach the hygroscopic material; The shielding surface of the shielding curved plate of the lower transmission shielding plate is in complete contact with the ventilation grille of the casing assembly, and the lower end exhaust mechanism is closed. 12 . The replaceable automatic moisture absorption device for automobile lamps according to claim 11 , wherein the logic condition for turning on the first working mode is to satisfy any one of the following conditions: 12 . The humidity content in the headlights in summer is between the first humidity threshold and the second humidity threshold, and the humidity content in the headlights in winter is above the third humidity threshold; The air humidity content inside the headlights is lower than the air humidity content in the engine compartment. 13 . The replaceable automatic moisture absorbing device for automobile lamps according to claim 5 , wherein the working mode includes a second working mode, and the replaceable automatic moisture absorbing device for automobile lamps discharges the headlight moisture in the second working mode. 14 . : The shielding curved plate of the upper transmission shielding plate is in complete contact with the air passage of the air intake shroud assembly, and the upper air intake mechanism is closed; The limit top rib of the lower transmission shielding plate is flush with the upper edge of the ventilation grille, the ventilation grille is fully opened, the lower end exhaust mechanism is opened, and the moisture absorbing material releases water vapor to the outside. 14. The replaceable automatic moisture absorption device for automobile lamps according to claim 13, wherein the logic condition for turning on the second working mode is to satisfy any one of the following conditions: The humidity content in the headlights in summer is below the first humidity threshold, and the humidity content in the headlights in winter is below the third humidity threshold; The air humidity content inside the headlights is higher than the air humidity content in the engine compartment. 15 . The replaceable automatic moisture absorption device for automobile lamps according to claim 5 , wherein the working mode includes a third working mode, and the replaceable automatic moisture absorption device for automobile lamps communicates with the outside world in the third working mode. 16 . Air: The limit top rib of the upper transmission shield is flush with the middle of the air passage of the intake shroud assembly, the upper air intake mechanism is half-opened, and the high-pressure air inside the headlight passes through the air in the intake shroud assembly to the absorbent material; The limit top rib of the lower transmission shutter is flush with the middle of the ventilation grille, the lower exhaust mechanism is half-opened, and the high-pressure air inside the headlight is ejected from the bottom of the housing. 16 . The replaceable automatic moisture absorption device for automobile lamps according to claim 15 , wherein the logic condition for turning on the third working mode is that the atmospheric pressure inside the headlight is higher than the first air pressure threshold or lower than the second air pressure threshold. 17 . , the third working mode is turned on with the highest priority.

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