CN211040822U

CN211040822U - Automobile headlamp with mist removing device

Info

Publication number: CN211040822U
Application number: CN201922112935.XU
Authority: CN
Inventors: 陈民强
Original assignee: Jiangsu Ruixin Auto Parts Co ltd
Current assignee: Jiangsu Ruixin Auto Parts Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-17
Anticipated expiration: 2029-12-02

Abstract

The utility model belongs to the technical field of auto parts, a vehicle headlamp with a defogging device is disclosed, which comprises a headlamp shell and a lens, wherein the headlamp shell and the lens are connected in a clamping manner, two guide rails are symmetrically fixed on the inner walls of the two sides of the headlamp shell, the two guide rails are close to the lens, two air flow driving devices are symmetrically arranged at the position between the two guide rails, a defogging component is connected between the two guide rails in a sliding manner, and the defogging component is positioned between the two air flow driving devices and moves up and down based on the driving of the two air flow driving devices; the demisting component comprises a sliding seat, a guide hole component arranged in the sliding seat and a telescopic component embedded into one side of the sliding seat; specifically, the guide hole assembly has a flow guide effect, so that part of air flow generates oblique impact on the inner surface of the lens to effectively flush out mist on the inner surface of the lens; the telescopic component can further realize the scraping of the fog on the inner surface of the lens when moving.

Description

Automobile headlamp with mist removing device

Technical Field

The utility model belongs to the technical field of auto-parts, concretely relates to have defogging gas device vehicle headlamps.

Background

The automobile headlamp is an automobile part for realizing illumination in the advancing direction of an automobile; the fogging of the headlamp is a normal physical phenomenon caused by that water molecules in air in the headlamp are changed into water vapor under the heating of lamplight, and then the air in the headlamp is not smooth, so that the water molecules are condensed and condensed into fog or small water drops on the inner side of a face mask of the headlamp and are attached to the inner surface of a lens of the headlamp.

In the prior art, the solution to the fogging phenomenon generally includes three solutions:

firstly, a drying agent is additionally arranged in a face shield of a headlamp to reduce moisture in air in the headlamp, but the action time of the drying agent is limited, and the drying agent needs to be replaced frequently and is troublesome;

secondly, the forced circulation of air in the headlamp is realized by utilizing devices such as a micro fan, but the starting time of the micro fan cannot be accurately controlled, the headlamp is usually started after fog is formed in the headlamp, and certain time is needed for eliminating the fog under the air circulation, so that the headlamp can be in a state of abnormal illumination for a part of time, and particularly, the headlamp has great danger in the process of high-speed driving of a vehicle at night;

thirdly, an antifogging coating is coated on the inner surface of the lens of the headlamp, so that the fog attached to the inner surface can be quickly formed into visible water drops, but the application cost of the method is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a have defogging gas device vehicle headlamps to effectively solve the problem of interior fogging of vehicle headlamps, and reach and need not to change, accurate start, quick defogging and effect with low costs.

In order to achieve the above object, the utility model provides a following technical scheme: an automobile headlamp with a defogging device comprises a headlamp shell and a lens, wherein the headlamp shell and the lens are connected with each other in a clamping manner, the lens is positioned on the front side of the headlamp shell, two guide rails are symmetrically fixed on the inner walls of the two sides of the headlamp shell, the two guide rails are close to the lens and are both metal guide rails, two groups of airflow driving devices are symmetrically installed at the position between the two guide rails, the two groups of airflow driving devices are respectively fixed on the top wall and the bottom wall in the headlamp shell, a defogging component is connected between the two guide rails in a sliding manner, the static friction force between the defogging component and the guide rails is equal to the gravity of the defogging component, and the defogging component is positioned between the two groups of airflow driving devices and moves up and down based on the driving of the two;

the demisting component comprises a sliding seat, a guide hole component arranged in the sliding seat and a telescopic component embedded in one side of the sliding seat, wherein the guide hole component guides airflow to the lens along an inclined direction to wash the inner surface of the lens; the movable end of the telescopic assembly is in contact with the lens to scrape the inner surface of the lens;

the device also comprises two exhaust electromagnetic valves which are symmetrically arranged, and the two exhaust electromagnetic valves are in cross fit with the two groups of airflow driving devices.

Preferably, the guide hole component comprises two taper air guide holes which are symmetrically arranged, a through hole connected between the two air guide holes, an air outlet hole arranged on one side of the through hole and a sealing piston arranged inside the through hole, wherein the air outlet hole is obliquely arranged, and the aperture of the air outlet hole is smaller than the minimum aperture of the air guide hole.

Preferably, the top and the bottom of the sliding seat are symmetrically provided with two tapered air guide sleeves, and the two air guide sleeves are respectively matched with the two air guide holes.

Preferably, the telescopic assembly is arranged on one side of one of the air guide holes and comprises a spring, a telescopic rod and a scraping head which are sequentially connected, wherein the cross section of the scraping head is circular.

Preferably, the temperature sensor is embedded in the guide rail, and the two side walls of the guide rail are symmetrically provided with limiting bulges so as to realize the matching with the sliding seat.

Preferably, the airflow driving device comprises a mounting seat, a nozzle installed at the bottom of the mounting seat, and an air inlet pipe connected to one side of the mounting seat, wherein one end of the air inlet pipe is communicated with the nozzle, and the other end of the air inlet pipe penetrates through the outer part of the headlamp shell and extends to the outside of the headlamp shell.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses in set up mobilizable defogging component, this component forms the drive based on the forced circulation of air in the head-light, need not to set up extra drive arrangement, can not cause the rising of whole head-light drive cost; meanwhile, the device also has a flow guide effect in the driving process, so that part of air flow generates oblique impact on the inner surface of the lens to effectively remove the attached mist on the inner surface of the lens, thereby improving the demisting speed;

in addition, the telescopic fog scraping structure is further included in the component, so that the component can further scrape fog on the inner surface of the lens when moving, the defogging speed is further increased, and the requirement for rapid defogging is met.

(2) Aiming at the movable demisting component, a movable guide structure is formed based on the metal guide rail so as to ensure the stability of the movement of the demisting component; in addition, still be equipped with temperature sensor on this metal guide rail to the accurate detection of fog state in the indirect realization head-light, and then guarantee that the defogging component is accurate when not forming the fog of large tracts of land, reach the effect of effectual prevention fog, in order to avoid the unable normal condition of illumination to appear in the head-light.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic view of the sliding base and the guide rail of the present invention;

FIG. 4 is a schematic structural view of the middle sliding seat of the present invention;

in the figure: 1-lens, 2-headlamp shell, 3-guide rail, 4-temperature sensor, 5-mounting seat, 6-spray head, 7-slide seat, 71-air guide hole, 72-sealing piston, 73-air outlet hole, 74-spring, 75-telescopic rod, 76-scraping head, 8-air guide sleeve and 9-exhaust electromagnetic valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: an automobile headlamp with a defogging device comprises a headlamp shell 2 and a lens 1 which are connected with each other in a clamping manner, wherein the lens 1 is positioned on the front side of the headlamp shell 2, two guide rails 3 are symmetrically fixed on the inner walls of two sides of the headlamp shell 2, the two guide rails 3 are close to the lens 1, the two guide rails 3 are metal guide rails, two groups of airflow driving devices are symmetrically installed at the position between the two guide rails 3, the two groups of airflow driving devices are respectively fixed on the top wall and the bottom wall inside the headlamp shell 2, a defogging member is connected between the two guide rails 3 in a sliding manner, the static friction force between the defogging member and the guide rails 3 is equal to the gravity of the defogging member, and the defogging member is positioned between the two groups of airflow driving devices and moves up and down based on the driving of the two;

the demisting component comprises a sliding seat 7, a guide hole component arranged in the sliding seat 7 and a telescopic component embedded in one side of the sliding seat 7, wherein the guide hole component guides airflow to the lens 1 along an inclined direction to wash the inner surface of the lens 1; the movable end of the telescopic component is contacted with the lens 1 to scrape the inner surface of the lens 1;

the device also comprises two exhaust electromagnetic valves 9 which are symmetrically arranged, and the two exhaust electromagnetic valves 9 are in cross fit with the two groups of airflow driving devices.

Preferably, the temperature sensor 4 is embedded in the guide rail 3, and the two side walls of the guide rail 3 are symmetrically formed with limiting protrusions to realize the cooperation with the sliding base 7.

Based on the upper structure, the utility model discloses a theory of operation as follows: particularly, based on the fact that metal has good heat-conducting property, temperature change of the metal is more sensitive under the same temperature condition, the temperature in the headlamp is gradually increased in practical use, water molecules and the metal guide rail absorb heat under the same condition, and the temperature change of the metal guide rail is more sensitive relative to the temperature change of the water molecules, so that temperature detection on the metal guide rail is more accurate than detection on whether fog is generated in the headlamp or not, and then a defogging component is accurately started when fog with a large area is not formed, so that an effective fog prevention effect is achieved, and the situation that the headlamp cannot normally illuminate is avoided;

specifically, based on the gravity limitation of the defogging member, the initial position of the defogging member is located at the bottommost position of the guide rail 3, at the moment, the airflow driving device located at the bottom is correspondingly started, the defogging member is pushed by the air outlet of the airflow driving device to move upwards, part of the airflow is guided to the inner surface of the lens 1 through the guide hole assembly in the process, so that the inner surface of the lens 1 is obliquely washed, and the airflow guided out after washing is discharged through the exhaust electromagnetic valve 9 above the lens to complete the air circulation in the headlamp; meanwhile, scraping operation is performed on the inner surface of the lens 1 through the telescopic assembly, so that the fog on the inner surface of the lens 1 is further removed;

when the demisting component moves to the topmost position, based on the balance of friction and gravity, the demisting component does not automatically fall, at the moment, the airflow driving device is switched, namely, the airflow driving device at the top is started to drive the demisting component to move downwards, under the action of the driving, the re-execution of inclined washing and movable scraping is ensured, and at the moment, finally guided airflow is discharged through the exhaust electromagnetic valve 9 below;

in conclusion, the automobile headlamp can be accurately demisted by reciprocating up and down.

Preferably, the airflow driving device comprises a mounting seat 5, a nozzle 6 mounted at the bottom of the mounting seat 5, and an air inlet pipe connected to one side of the mounting seat 5, wherein one end of the air inlet pipe is communicated with the nozzle 6, and the other end of the air inlet pipe penetrates and extends to the outside of the headlamp housing 2.

For the guide hole assembly and the telescopic assembly in the defogging member, the following specific structure is disclosed in conjunction with fig. 2:

in this embodiment, preferably, the guide hole assembly includes two conical air guide holes 71 symmetrically disposed, a through hole connected between the two air guide holes 71, an air outlet 73 disposed on one side of the through hole, and a sealing piston 72 mounted inside the through hole, wherein the air outlet 73 is disposed in an inclined manner, and an aperture of the air outlet 73 is smaller than a minimum aperture of the air guide holes 71.

In this embodiment, preferably, two tapered air guide sleeves 8 are symmetrically disposed on the top and the bottom of the sliding base 7, and the two air guide sleeves 8 are respectively adapted to the two air guide holes 71.

In this embodiment, it is preferable that the telescopic assembly is disposed at one side of one of the air guide holes 71, and the telescopic assembly includes a spring 74, a telescopic rod 75 and a scraping head 76 which are connected in sequence, wherein the cross-sectional shape of the scraping head 76 is circular.

Specifically, taking the upward movement of the defogging member as an example: when the airflow driving device at the bottom performs air outlet pushing, airflow rapidly enters the air guide hole 71 through the guiding of the air guide sleeve 8, and pushes the sealing piston 72 in the through hole to move the sealing piston 72 upwards, so that the air guide hole 71 below is communicated with the air outlet hole 73, and the airflow in the air guide hole 71 flows into the air outlet hole 73 and flows downwards to the inner surface of the lens 1 under the oblique guiding of the air outlet hole 73, so that the oblique flushing effect is achieved; in addition, based on the arrangement that the aperture of the air outlet 73 is smaller than the minimum aperture of the air guide hole 71, when the diversion is generated, only part of the air flow can enter the air outlet 73, the rest of the air flow is retained in the air guide hole 71, and the air flow has the tendency of flowing upwards, so that the integral slide seat 7 is pushed to move upwards, and the pushing driving of the air flow driving device on the demisting component is realized;

in addition, in the moving process of the sliding seat 7, the sliding seat 7 drives the telescopic rod 75 to move synchronously, and the telescopic rod 75 drives the scraping head 76 to move synchronously, so as to realize the scraping operation of the scraping head 76 on the inner surface of the lens 1, wherein the cross section of the scraping head 76 is circular, so that the scraping head 76 can be effectively suitable for lenses 1 with different shapes; the other end of the telescopic rod 75 is connected with the spring 74, and the telescopic rod 75 is stretched under the elastic deformation of the spring 74, so that the scraping head 76 can be always in contact with the inner surface of the lens 1, and an effective scraping effect is achieved.

The principle for the downward movement of the defogging member is the same as the upward movement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a have defogging gas device automotive headlamp, includes headlamp casing (2) and lens (1) that mutual block is connected, and lens (1) are located the front side of headlamp casing (2), its characterized in that: two guide rails (3) are symmetrically fixed on the inner walls of two sides of the headlamp shell (2), the two guide rails (3) are close to the lens (1), the two guide rails (3) are metal guide rails, two groups of airflow driving devices are symmetrically installed at the position between the two guide rails (3), the two groups of airflow driving devices are respectively fixed on the top wall and the bottom wall inside the headlamp shell (2), a defogging member is slidably connected between the two guide rails (3), the static friction between the defogging member and the guide rails (3) is equal to the gravity of the defogging member, and the defogging member is positioned between the two groups of airflow driving devices and moves up and down based on the driving of the two groups of airflow driving devices;

the demisting component comprises a sliding seat (7), a guide hole component arranged in the sliding seat (7) and a telescopic component embedded in one side of the sliding seat (7), wherein the guide hole component guides airflow to the lens (1) along an inclined direction to wash the inner surface of the lens (1); the movable end of the telescopic assembly is in contact with the lens (1) to scrape the inner surface of the lens (1);

the air-conditioning system also comprises two air exhaust electromagnetic valves (9) which are symmetrically arranged, and the two air exhaust electromagnetic valves (9) are in cross fit with the two groups of air flow driving devices.

2. An automotive headlamp with a defogging device according to claim 1, wherein: the guide hole assembly comprises two conical air guide holes (71) which are symmetrically arranged, a through hole connected between the two air guide holes (71), an air outlet hole (73) arranged on one side of the through hole and a sealing piston (72) arranged inside the through hole, wherein the air outlet hole (73) is obliquely arranged, and the aperture of the air outlet hole (73) is smaller than the minimum aperture of the air guide holes (71).

3. An automotive headlamp with a defogging device according to claim 2, wherein: the top and the bottom of the sliding seat (7) are symmetrically provided with two tapered air guide sleeves (8), and the two air guide sleeves (8) are respectively matched with the two air guide holes (71).

4. An automotive headlamp with a defogging device according to claim 3, wherein: the telescopic assembly is arranged on one side of one air guide hole (71), and comprises a spring (74), a telescopic rod (75) and a scraping head (76) which are sequentially connected, wherein the cross section of the scraping head (76) is circular.

5. An automotive headlamp with a defogging device according to claim 4, wherein: temperature sensor (4) are embedded into the guide rail (3), and limiting bulges are symmetrically formed on two side walls of the guide rail (3) so as to realize the matching with the sliding seat (7).

6. An automotive headlamp with a defogging device according to claim 5, wherein: the air flow driving device comprises a mounting seat (5), a spray head (6) mounted at the bottom of the mounting seat (5) and an air inlet pipe connected to one side of the mounting seat (5), one end of the air inlet pipe is communicated with the spray head (6), and the other end of the air inlet pipe penetrates through the outer portion of the headlamp shell (2).