CN114963113A

CN114963113A - Light changing mechanism of follow-up steering automobile headlamp, headlamp and automobile

Info

Publication number: CN114963113A
Application number: CN202210298090.1A
Authority: CN
Inventors: 沈国野; 刘君燕
Original assignee: Zhejiang Biken Technology Co ltd
Current assignee: Zhejiang Biken Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-08-30

Abstract

The invention discloses a light changing mechanism of a follow-up steering automobile headlamp, which is arranged in a lamp bracket and is used for variably shielding a light source emitted in the headlamp and then irradiating the light source to a lens, wherein the light changing mechanism comprises a main bracket fixed in the lamp bracket, a light changing shaft arranged on the main bracket and used for variably shielding the light source emitted in the headlamp and a driving mechanism arranged on the main bracket and used for driving the light changing shaft to rotate; a distorted V-shaped groove is arranged on the optical axis. In the embodiment, the variable shading of the light source is realized by utilizing the rotation of the variable optical axis and driving the twisted V-shaped groove to rotate. Through the scheme, the automobile closed-loop detection device has the advantages of simple structure, reliable action, continuous variability, closed-loop detection and the like, and has high practical value and popularization value in the technical field of automobiles.

Description

Light changing mechanism of follow-up steering automobile headlamp, headlamp and automobile

Technical Field

The invention relates to the technical field of automobiles, in particular to a light changing mechanism of a follow-up steering automobile headlamp, a headlamp and an automobile.

Background

The front lamp of car is installed on the anterior both sides of car, as traditional front lamp, can only work under a fixed mode, when the car was gone straight ahead night promptly, its light can shine on the road surface of direction of advance, guarantee that the driver has good place ahead sight, but actual road use situation is very complicated, if when the car was turned at the bend, the head lamp light deflected the direction of advance of car, cause the driver to see the road surface condition not clearly, bring the difficulty for driver's safe driving, make traffic safety have huge hidden danger, and often cause the traffic accident consequently. In addition, the headlamp adjusting mechanism in the prior art can only realize up-down pitch angle adjustment, which is adjusted in a vehicle static state.

At present, some LED car headlight car lights that are used for adjustable angle of illumination when turning that exist on the market are turned angle limitedly, though can follow the car and turn, nevertheless because whole LED lamp module turns to along with the monolith support follow-up, have occupied great headlight inner space, need consume great drive power, and relative cost is higher, and because self inertia influence when the highway section of jolting, the module turns to the inefficiency higher. For example, the invention has the patent application number of '201120502345.9' and is named as 'an automobile headlamp turning along the rotation direction of an automobile'; for another example, the invention is a Chinese patent with patent application number "200710135034.1" entitled "automatic adjusting device for headlight of automobile".

Therefore, it is urgently needed to provide a light changing mechanism of a follow-up steering automobile headlamp, a headlamp and an automobile, wherein the light changing mechanism is simple in structure and reliable in action.

Disclosure of Invention

In view of the above problems, the present invention provides a light changing mechanism for a front headlamp of a follow-up steering automobile, a headlamp and an automobile, and adopts the following technical scheme:

the invention provides a light changing mechanism of a follow-up steering automobile headlamp, which is arranged in a lamp bracket and is used for variably shielding a light source emitted in the headlamp and then irradiating the light source to a lens, wherein the light changing mechanism comprises a main bracket fixed in the lamp bracket, a light changing shaft arranged on the main bracket and used for variably shielding the light source emitted in the headlamp and a driving mechanism arranged on the main bracket and used for driving the light changing shaft to rotate; a distorted V-shaped groove is arranged on the optical axis. In the embodiment, the variable shading of the light source is realized by utilizing the rotation of the variable optical axis and driving the twisted V-shaped groove to rotate.

In the second aspect, the present invention provides a headlamp having a dimmer mechanism for a follow-up steering automotive headlamp.

In a third aspect, the present invention provides an automobile having a headlamp with a dimmer mechanism disposed therein for follow-up steering of the automobile headlamp.

Compared with the prior art, the invention has the following beneficial effects:

(1) the light changing mechanism is arranged in the lamp lens module, variably shields a light source emitted in the headlamp and then emits the light source to the lens, equivalently, a variable shield is formed on a focal plane of the lens, and the variable shield is realized by the rotation of a shield shaft. The invention is realized based on the theoretical basis of imaging optics, namely, a cut-off line of a light spot coming out through a lens is a projection profile of a certain position of a rotating shaft of an amplifying inverted device on a focal plane.

(2) The invention skillfully sets the optical axis, and the optical axis is twisted and provided with a V-shaped groove, a first parallel gap part and a second parallel gap part, and the twisted V-shaped groove is used for reflecting the light source so as to realize the variable shielding of the light source; because the heat that the LED lamp produced is less, it adopts the mode of sheltering from more reliable, and moves portably, compares with traditional following the car and turning to the car headlamp, and is low to installation space, position requirement, does not relate to the action of headlight whole, and its reliability is better.

(3) The invention skillfully adopts the modes of the motor, the driving gear and the driven gear to drive and rotate, and has reliable action and quicker response.

(4) The invention acquires the rotation angle of the variable optical axis by arranging the (magnetic) coding disc and the (magnetic) sensor so as to realize closed-loop detection and ensure more reliable control.

(5) The invention skillfully arranges the first parallel gap part and the second parallel gap part to meet the requirements of dipped headlights of different regulations (left/right rudders); (the parallel cutaway portions are actually provided, and only one of the left/right rudders is used).

In conclusion, the invention has the advantages of simple structure, reliable action, closed-loop detection and the like, and has high practical value and popularization value in the technical field of automobiles.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of protection, and it will be apparent to those skilled in the art that other related drawings may be obtained based on these drawings without inventive effort.

Fig. 1 is a schematic view of a headlamp according to the present invention.

FIG. 2 is a schematic structural diagram (I) of the light changing mechanism of the present invention.

FIG. 3 is a schematic structural diagram of a light changing mechanism according to the present invention (II).

FIG. 4 is a schematic structural diagram (III) of the light changing mechanism of the present invention.

Fig. 5 is a schematic structural diagram (i) of the optical axis changing device of the present invention.

Fig. 6 is a schematic structural diagram (ii) of the optical axis changing system of the present invention.

Fig. 7 is a schematic structural diagram (iii) of the present invention.

Fig. 8 is a schematic view a-a of fig. 7.

FIG. 9 is a light variation state diagram (one) of the present invention.

FIG. 10 is a light variation state diagram (two) of the present invention.

FIG. 11 is a light variation state diagram (III) of the present invention.

Fig. 12 is an image of a low beam headlight of a right rudder vehicle type according to the present invention.

Fig. 13 is an image of headlights of a left-rudder vehicle according to the present invention.

FIG. 14 is a ray path diagram of one of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1. a lamp bracket; 2. a lens; 3. a light changing mechanism; 4. a combined type reflection cup; 31. a main support; 32. a motor; 33. a driving gear; 34. a driven gear; 35. changing an optical axis; 36. a code disc; 37. a sensor; 351. a V-like groove; 352. a first parallel notch portion; 353. a second parallel notch portion.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Examples

As shown in fig. 1 to 8, the present embodiment provides an automobile provided with a headlamp and a dimming mechanism of a follow-up steering automobile headlamp provided in the headlamp. In the present embodiment, the light changing mechanism is installed in the lamp holder 1, and variably blocks the light emitted from the headlamp and then enters the lens 2. In the present embodiment, the terms "first", "second", and the like are used only for distinguishing the similar components, and are not to be construed as limiting the scope of protection. In the present embodiment, the terms of orientation such as "bottom", "top", "peripheral edge", "center", and the like are explained based on the drawings.

Specifically, the light changing mechanism of the present embodiment includes a main bracket 31 fixed in the lamp bracket 1, a light changing shaft 35 disposed on the main bracket 31 and variably blocking the light source emitted from the headlamp, and a driving mechanism disposed on the main bracket 31 for driving the light changing shaft 35 to rotate; the variable optical axis 35 is provided with a twisted V-like groove 351. The light changing shaft 35 comprises a rotating shaft and a light changing part which are integrally formed; the V-shaped groove is twisted on the dimming part. In this embodiment, the twist angle of the V-shaped groove is: 180 degrees; the opening angle of the V-shaped groove is as follows: 120 degrees. In addition, the outer edge of the V-shaped groove of the embodiment smoothly transitions with the outer edge of the light changing part, and the fillet radius of the V-shaped groove is 0.5 mm.

Moreover, in the present embodiment, in order to realize the outer low beam switching, the first parallel notch portion 352 and the second parallel notch portion 353 are provided on the surface of the light changing shaft 35; the first and second

parallel cutout portions

352 and 353 are disposed away from the V-like groove 351. First parallel notch 352 and second parallel notch 353 are arranged at 90 degrees along the surface of optical axis 35. First parallel notch 352 and second parallel notch 353 of the present embodiment are provided on the surface of light beam changing shaft 35 at equal lengths.

As shown in fig. 2 to 3, the present embodiment realizes reliable driving and detection; the driving mechanism comprises a motor 32 fixed on the main support 31, a driving gear 33 connected with a bearing of the motor 32, a driven gear 34 connected with one end of a light changing shaft 35 and meshed with the driving gear 33, an encoding disc 36 coaxially connected with the light changing shaft 35, and a sensor 37 fixed on the main support 31 and matched with the encoding disc 36 in an induction mode. Wherein the sensor 37 and the encoding disk 36 are of a magnetic type, in the present embodiment, the encoding disk 36 is provided with an angle scale which monitors the position state of the variable optical axis 35 in real time by the sensor 37.

As shown in fig. 14, the LED lamp bead emits light, and after being reflected by the combined type reflective cup 4, part of the light is blocked by the light changing mechanism, and the light shape on the inner surface of the lens 2 is refracted by the lens (enlarging the handstand effect) to form an image in the figure.

As shown in fig. 9 to 13, in order to verify the variable shielding effect of the dimming axis on the light source, the present embodiment performs the low beam switching test of the light source angle and different regulations. As can be seen from the figure, the vehicle-mounted rotation angle is 40 degrees in total from R20 to L20. The embodiment can reliably change light along with the steering of the automobile.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but all changes that can be made by applying the principles of the present invention and performing non-inventive work on the basis of the principles shall fall within the scope of the present invention.

Claims

1. A light changing mechanism of a follow-up steering automobile headlamp is arranged in a lamp bracket (1), variably shields a light source emitted in the headlamp and then emits the light source to a lens (2), and is characterized in that the light changing mechanism comprises a main bracket (31) fixed in the lamp bracket (1), a light changing shaft (35) arranged on the main bracket (31) and variably shields the light source emitted in the headlamp, and a driving mechanism arranged on the main bracket (31) and used for driving the light changing shaft (35) to rotate; a twisted V-shaped groove (351) is arranged on the optical axis changing (35).

2. A light changing mechanism for a follow up steering automotive headlamp according to claim 1, wherein said light changing axis (35) comprises an integrally formed rotating shaft and a light changing portion; the V-shaped groove is twisted on the dimming part.

3. A light changing mechanism for a front headlamp of a follow up steering automobile as claimed in claim 1 or 2, wherein the twisting angle of the V-like groove is greater than 0 ° and equal to or less than 180 °; the opening angle of the V-like groove is larger than 0 degree and smaller than 180 degrees.

4. A dimmer mechanism for a follow up steering automotive headlamp according to claim 1 or 2, wherein a first parallel cutout portion (352) and a second parallel cutout portion (353) are provided on the surface of the dimmer axis (35); the first parallel cutout portion (352) and the second parallel cutout portion (353) are disposed away from the V-like groove (351).

5. A dimmer mechanism as claimed in claim 4, wherein the first and second parallel cut-out portions (352, 353) are arranged at 90 ° to the surface of the beam-changing axis (35).

6. A dimmer mechanism for a follow up steering automotive headlamp according to claim 4, wherein the first parallel cutout portion (352) and the second parallel cutout portion (353) are of equal length and are disposed on the surface of the dimmer axis (35).

7. A dimmer mechanism for a follow-up steering automotive headlamp according to claim 1, wherein said driving mechanism comprises a motor (32) fixed to the main support (31), a driving gear (33) coupled to a bearing of the motor (32), and a driven gear (34) coupled to one end of the dimmer shaft (35) and in meshing engagement with the driving gear (33).

8. A dimmer mechanism for a follow-up steering automotive headlamp according to claim 1 or 7, further comprising a code wheel (36) coaxially connected to the dimmer shaft (35), and a sensor (37) fixed to the main bracket (31) and inductively coupled to the code wheel (36).

9. A headlamp characterized in that a dimming mechanism of the follow-up steering automobile headlamp as claimed in any one of claims 1 to 8 is provided in the headlamp.

10. An automobile comprising a headlamp, wherein a dimming mechanism of the follow-up steering automobile headlamp as claimed in any one of claims 1 to 8 is provided in the headlamp.