A method for adjusting a car light

Abstract

The present invention relates to a vehicle headlight adjustment mechanism, comprising a lamp, the lamp being fixed to a lamp mounting bracket, the lamp mounting bracket being provided with a stepper motor, the stepper motor being connected to the rear end of the lamp via an adjustment mechanism assembly, the adjustment mechanism assembly comprising a first ratchet active pawl and a second ratchet active pawl mounted on and fixedly connected to the output shaft of the stepper motor, the inner side surfaces of the first ratchet active pawl and the second ratchet active pawl being opposed to each other; a lamp vertical adjustment mechanism cooperating therewith is provided on the inner side of the first ratchet active pawl, and a lamp horizontal adjustment mechanism cooperating therewith is provided on the inner side of the second ratchet active pawl. The present invention achieves vertical and horizontal adjustment of the entire headlight by providing a headlight adjustment mechanism to drive the rotation of a connected cam mechanism. Compared with conventional headlight adjustment systems, the number of motors is reduced, thereby lowering the manufacturing cost of the headlight.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and in particular to a mechanism for adjusting automobile lights. Background Art

[0002] With the development of bus lighting technology, the new national standard has put forward many requirements for bus lighting technology. The lamps used in buses must be able to meet the requirements of the vehicle and must have a headlight beam height adjustment device / function to easily adjust the beam position according to the load situation. If the adjustment device is manual, it should be able to be operated from the driver's seat, especially for the adjustment of headlights and front fog lights. Therefore, a simple, practical, and low-cost automobile headlight adjustment mechanism is used to meet the national standard requirements and increase driving safety.

[0003] The main method currently used to solve this problem is to directly install two stepper motors at the adjustment nut of the headlight, fix these two stepper motors to the car headlight mounting bracket, and use a switch to control the forward and reverse rotation of the two stepper motors to adjust the angle of the headlight. Some methods change the mounting mechanism inside the headlight, by changing the relative position of the bulb or reflector to change the angle of the light beam projected from the headlight.

[0004] Many designs have been made in China for automobile headlight adjustment mechanisms. Chinese patent publication number CN105387410A provides an automobile headlight AFS dimming module, which includes a main adjustment mechanism, including a main stepper motor bracket, a main stepper motor mounted on the main stepper motor bracket, an adjustment screw connected to the left side of the main stepper motor bracket, and a connecting rod connected to the left side of the adjustment screw; the connecting rod is connected to three adjustment brackets, which are connected to a support frame, and a gear is provided at the bottom of the support frame, which is used to mount lenses and reflectors. The main adjustment mechanism drives the vertical adjustment of the three groups of lenses and reflectors, and each group of lenses and reflectors is driven by a secondary adjustment mechanism to rotate and adjust the illumination angle without the need for transmission; the angle of reflection of the headlight can be controlled, which can increase the freedom and convenience of the headlight adjustment system. Another example is patent publication CN 105333374A, which discloses a conveniently adjustable automotive headlight. The headlight housing and the transparent lampshade form a cavity within which are located the high / low beams, a turn signal, and a daytime running light. The turn signal is located inside the high / low beams, and the daytime running light is an LED light secured to the housing within the cavity via a daytime running light LED bracket. The high / low beams include high / low beam bulbs and a high / low beam projector, which is mounted on a high / low beam projector bracket. The turn signal includes a turn signal bulb and a turn signal reflector. The lamp housing is provided with an adjustment structure for adjusting the position of the high / low beam projector bracket. This headlight integrates the high / low beams, daytime running lights, and turn signal, resulting in a compact structure that is easy to install and maintain at a low cost. Furthermore, the high / low beams are easily adjustable.

[0005] This patent uses a new structural design to adjust the angle of the headlights through the forward and reverse rotation of the stepper motor, further improving the headlight angle adjustment mechanism. Compared with traditional adjustment mechanisms, it has the characteristics of simple structure, strong environmental adaptability, and flexible adjustment. Summary of the Invention

[0006] The purpose of the present invention is to solve the defects of the prior art and provide a vehicle headlight adjustment mechanism.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A vehicle light adjustment mechanism is provided, comprising a lamp, the lamp being fixed to a lamp mounting bracket, the lamp mounting bracket being provided with a stepper motor, the stepper motor being connected to the rear end of the lamp via an adjustment mechanism assembly, the adjustment mechanism assembly comprising a first ratchet active pawl and a second ratchet active pawl sleeved on and fixedly connected to an output shaft of the stepper motor, the inner side surfaces of the first ratchet active pawl and the second ratchet active pawl being opposed to each other;

[0009] The inner side of the first ratchet active pawl is provided with a lamp up and down adjustment mechanism that cooperates therewith, and the inner side of the second ratchet active pawl is provided with a lamp left and right adjustment mechanism that cooperates therewith;

[0010] The lamp up and down adjustment mechanism includes a first ratchet wheel arranged on the inner side of the first ratchet wheel active pawl and cooperating with the first ratchet wheel active pawl, one side of the first ratchet wheel is connected to the up and down adjustment cam, and the outer side of the up and down adjustment cam is provided with an up and down adjustment support rod, one end of the up and down adjustment support rod is connected to the bottom of the lamp, and the other end contacts the circumference of the up and down adjustment cam;

[0011] The left and right adjustment mechanism of the lamp includes a second ratchet wheel which cooperates with the second ratchet wheel active pawl on the inner side thereof, one side of the second ratchet wheel is connected to the left and right adjustment cams, and the outer side of the left and right adjustment cams is provided with a left and right adjustment strut, one end of the left and right adjustment strut is connected to the side surface of the lamp, and the other end contacts the circumferential surface of the left and right adjustment cams.

[0012] Furthermore, a first stopping pawl is provided on the inner wall of the first ratchet active pawl, and the first stopping pawl is staggered with the ratchet teeth on the circumference of the first ratchet. When the first ratchet active pawl rotates clockwise, the first stopping pawl drives the first ratchet to rotate together, and when the first ratchet active pawl rotates counterclockwise, the first ratchet active pawl rotates idly.

[0013] Furthermore, a second stopping pawl is provided on the inner wall of the second ratchet active pawl, and the second stopping pawl is staggered with the ratchet teeth on the circumference of the second ratchet. When the second ratchet active pawl rotates clockwise, the second ratchet active pawl rotates idly. When the second ratchet active pawl rotates counterclockwise, the second stopping pawl drives the second ratchet to rotate together.

[0014] Furthermore, the first ratchet is mounted on the output shaft of the stepping motor in a forward direction, and the second ratchet is mounted on the output shaft of the stepping motor in a reverse direction.

[0015] Furthermore, the upper and lower adjustment struts and the left and right adjustment struts are provided with a stabilizing guide mechanism at the ends near the lamp, and the stabilizing guide mechanism includes an upper and lower adjustment guide plate and a left and right adjustment guide plate fixed on the lamp mounting bracket, the upper and lower adjustment guide plate and the left and right adjustment guide plate are perpendicular to each other, and the upper and lower adjustment guide plates are provided with an upper and lower adjustment strut slide groove, and the end of the upper and lower adjustment strut is provided with a first pulley, and the first pulley is located in the upper and lower adjustment strut slide groove, and the left and right adjustment guide plates are provided with left and right adjustment strut slide grooves, and the end of the left and right adjustment strut is provided with a second pulley, and the second pulley is located in the left and right adjustment strut slide groove.

[0016] Furthermore, rolling bearings are provided at the connections between the first ratchet wheel, the second ratchet wheel and the output shaft of the stepping motor.

[0017] Furthermore, a rubber sleeve is provided on the outside of the lamp, and the rubber sleeve is fixed on the lamp mounting bracket.

[0018] Furthermore, the radians of the contour curves of the outer peripheral surfaces of the up-down adjustment cam and the left-right adjustment cam are controllable.

[0019] Furthermore, the ends of the upper and lower adjustment struts that contact the circumferential surfaces of the upper and lower adjustment cams are in an arc shape, and the ends of the left and right adjustment struts that contact the circumferential surfaces of the left and right adjustment cams are in an arc shape.

[0020] Furthermore, the stepper motor has forward and reverse rotation functions, and a button for controlling the forward and reverse rotation of the stepper motor is provided on the car dashboard.

[0021] The present invention utilizes a cam and ratchet mechanism to achieve step-by-step adjustment of the headlight, both vertically and horizontally. A stepper motor's forward and reverse rotation is controlled by a button, driving an adjustment mechanism connected to the stepper motor to adjust the headlight vertically and horizontally. The headlight mounting bracket is connected to the stepper motor and the adjustment mechanism, ensuring that rotation of the stepper motor drives rotation of the cam mechanism. By providing a headlight adjustment mechanism to drive the rotation of the connected cam mechanism, the present invention achieves vertical and horizontal adjustment of the headlight. Compared to traditional headlight adjustment mechanisms, the number of motors required is reduced, lowering the manufacturing cost of the lamp. By varying the actual profile of the cam, fine adjustments can be made within the normal light range and rapid adjustments can be made in areas where the light is not frequently used, thereby increasing the accuracy and convenience of the headlight adjustment system. By varying the actual profile of the cam, the conventional average motor speed adjustment mechanism can be avoided, allowing for the arbitrary design of different adjustment speeds within the adjustment cycle. By varying the actual profile of the cam, rapid adjustment from a starting position can be achieved. Compared to traditional adjustment mechanisms, the present invention offers advantages such as a simpler structure, greater environmental adaptability, and more flexible adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the present invention;

[0023] Figure 2 is a schematic diagram of the adjustment mechanism assembly of the present invention;

[0024] Figure 3 Schematic diagram of the up and down adjustment mechanism of the lamp of the present invention;

[0025] Figure 4 Schematic diagram of the left-right adjustment mechanism of the lamp of the present invention;

[0026] Figure 5 is a schematic diagram of a stable guide mechanism of the present invention;

[0027] Figure 6 It is a schematic back view of the stable guide mechanism of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementations.

[0029] like Figures 1 to 6 As shown, an automobile light adjustment mechanism is provided, including a lamp 1, the lamp 1 being fixed to a lamp mounting bracket 2, the lamp mounting bracket 2 being provided with a stepping motor 3, the stepping motor 3 being connected to the rear end of the lamp 1 via an adjustment mechanism assembly 4, the adjustment mechanism assembly 4 including a first ratchet active pawl 6 and a second ratchet active pawl 7 sleeved on and fixedly connected to an output shaft 5 of the stepping motor, the inner side surfaces of the first ratchet active pawl 6 and the second ratchet active pawl 7 being opposed to each other;

[0030] The inner side of the first ratchet active pawl 6 is provided with a lamp up and down adjustment mechanism that cooperates therewith, and the inner side of the second ratchet active pawl 7 is provided with a lamp left and right adjustment mechanism that cooperates therewith;

[0031] The lamp vertical adjustment mechanism includes a first ratchet 8 arranged on the inner side of the first ratchet active pawl 6 and cooperating with the first ratchet active pawl 6. One side of the first ratchet 8 is connected to the vertical adjustment cam 9. The outer side of the vertical adjustment cam 9 is provided with a vertical adjustment support rod 10. One end of the vertical adjustment support rod 10 is connected to the bottom of the lamp 1, and the other end contacts the circumference of the vertical adjustment cam 9.

[0032] The left and right adjustment mechanism of the lamp includes a second ratchet 11 which cooperates with the second ratchet active pawl 7 on the inner side of the second ratchet active pawl 7, one side of the second ratchet 11 is connected to the left and right adjustment cams 12, and the outer side of the left and right adjustment cams 12 is provided with a left and right adjustment support rod 13, one end of the left and right adjustment support rod 13 is connected to the side of the lamp 1, and the other end contacts the circumferential surface of the left and right adjustment cams 12.

[0033] Furthermore, a first stopping pawl 14 is provided on the inner wall of the first ratchet active pawl 6. The first stopping pawl 14 is staggered with the ratchet teeth on the circumference of the first ratchet 8. When the first ratchet active pawl 6 rotates clockwise, the first stopping pawl 6 drives the first ratchet 8 to rotate together. When the first ratchet active pawl 6 rotates counterclockwise, the first ratchet active pawl 6 rotates idly.

[0034] Furthermore, a second stop pawl 15 is provided on the inner wall of the second ratchet pawl 7. This second stop pawl 15 intersects with the ratchet teeth on the circumference of the second ratchet 11. When the second ratchet pawl 7 rotates clockwise, it idles. When the second ratchet pawl 7 rotates counterclockwise, the second stop pawl 15 drives the second ratchet 11 to rotate. When the stepper motor 3 rotates forward or reverse, the first and second ratchet pawls 6 and 7 rotate along with the stepper motor output shaft 5. Specifically, the first ratchet 8 is mounted on the stepper motor output shaft 5 in the forward direction, while the second ratchet 11 is mounted on the stepper motor output shaft 5 in the reverse direction.

[0035] In order to ensure that the ends of the up and down adjustment struts 10 and the left and right adjustment struts 13 are close to the lamp 1, a stable guide mechanism is provided. The stable guide mechanism includes an up and down adjustment guide plate 16 and a left and right adjustment guide plate 17 fixed on the lamp mounting bracket 2. The up and down adjustment guide plate 16 and the left and right adjustment guide plate 17 are perpendicular to each other. An up and down adjustment strut slide 18 is provided on the up and down adjustment guide plate 16. A first pulley 19 is provided at the end of the up and down adjustment strut 10. The first pulley 19 is located in the up and down adjustment strut slide 18. The left and right adjustment guide plate 17 is provided with a left and right adjustment The strut slot 20 is a section, and the end of the left and right adjustment strut 17 is provided with a second pulley 21, and the second pulley 21 is located in the left and right adjustment strut slot 20. The upper and lower adjustment strut 10 is limited by the upper and lower adjustment strut slot 18 during the up and down movement, effectively ensuring that the lamp 1 connected to the upper and lower adjustment strut 10 swings stably up and down in the vertical space direction. Similarly, the left and right adjustment strut 17 is limited by the left and right adjustment strut slot 20 during the left and right movement, effectively ensuring that the lamp 1 connected to the left and right adjustment strut 17 swings stably left and right in the horizontal direction.

[0036] Furthermore, rolling bearings 22 are provided at the connections between the first ratchet 8 and the second ratchet 11 and the stepper motor output shaft 5 , and a rubber sleeve 23 is provided on the outside of the lamp 1 , which is fixed to the lamp mounting bracket 2 .

[0037] The radian of the contour curve 24 of the outer circumference of the upper and lower adjustment cams 9 and the left and right adjustment cams 12 is controllable. The ends of the upper and lower adjustment struts 10 that contact the circumference of the upper and lower adjustment cams 9 are in an arc shape, and the ends of the left and right adjustment struts 13 that contact the circumference of the left and right adjustment cams 12 are in an arc shape. The stepper motor has forward and reverse functions, and a button for controlling the forward and reverse rotation of the stepper motor is provided on the car dashboard.

[0038] When controlling the vertical angle of the lamp, when the stepper motor 3 rotates forward, the first ratchet 8 and the first ratchet active pawl 6 operate, the second ratchet 11 and the corresponding ratchet mechanism are inactive, and the horizontal adjustment cam 12 connected thereto does not rotate. The first ratchet 8 drives the vertical adjustment cam 9 to rotate, which in turn drives the vertical adjustment strut 10 connected thereto. The vertical adjustment strut 10 is connected to the lamp 1, thereby controlling the vertical adjustment angle of the lamp 1. When the stepper motor 3 rotates backward, the second ratchet 11 and the second ratchet active pawl 7 operate, the first ratchet 8 and the corresponding ratchet mechanism are inactive, and the horizontal adjustment cam 9 connected thereto does not rotate. The second ratchet 11 drives the horizontal adjustment cam 12 to rotate, which in turn drives the horizontal adjustment strut 13 connected thereto. The horizontal adjustment strut 13 is connected to the lamp 1, thereby controlling the horizontal adjustment angle of the lamp 1.

[0039] In addition, by changing the size of the actual profile curves of the upper and lower adjustment cams 9 and the left and right adjustment cams 12, it is possible to achieve fine-tuning within the normal light range of the light and quick adjustment in places where the light is not often used, which can increase the accuracy and convenience of the headlight adjustment system. By changing the size of the actual profile curves of the upper and lower adjustment cams 9 and the left and right adjustment cams 12, it is possible to avoid the conventional motor speed average adjustment mechanism and arbitrarily design different adjustment speeds within the adjustment cycle. It is possible to achieve quick adjustment from the starting position. By assembling two pairs of identical ratchet mechanisms in the forward and reverse directions, one set of ratchet mechanisms is always in the working state when the stepper motor rotates forward and reverse, and the other set of ratchet mechanisms is in the non-working state and is prevented from rotating by the stop pawl. The forward and reverse rotation controls the adjustment of the up and down and left and right dimensions respectively and work independently without interfering with each other.

[0040] This patented invention is based on the application of a cam and ratchet mechanical structure to achieve step-by-step adjustment of the headlights in both the vertical and left and right directions. The forward and reverse rotation of the stepper motor is controlled by a button, driving the adjustment mechanism connected to the stepper motor to adjust the headlights vertically and left and right. The headlight mounting bracket is connected to the stepper motor and the adjustment mechanism. This ensures that the rotation of the stepper motor drives the rotation of the cam mechanism. The present invention achieves vertical and left and right adjustment of the headlights by providing a headlight adjustment mechanism to drive the rotation of the connected cam mechanism. Compared with traditional headlight adjustment methods, this reduces the number of motors and reduces the manufacturing cost of the lamp.

[0041] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A vehicle light adjustment mechanism is provided, comprising a lamp, the lamp being fixed on a lamp mounting bracket, the lamp mounting bracket being provided with a stepping motor, the stepping motor being connected to the tail of the lamp through an adjustment mechanism assembly, characterized in that: The adjustment mechanism assembly includes a first ratchet active pawl and a second ratchet active pawl which are sleeved on and fixedly connected to the output shaft of the stepping motor, wherein the inner sides of the first ratchet active pawl and the second ratchet active pawl are opposite to each other; The inner side of the first ratchet active pawl is provided with a lamp up and down adjustment mechanism that cooperates therewith, and the inner side of the second ratchet active pawl is provided with a lamp left and right adjustment mechanism that cooperates therewith; The lamp up and down adjustment mechanism includes a first ratchet wheel arranged on the inner side of the first ratchet wheel active pawl and cooperating with the first ratchet wheel active pawl, one side of the first ratchet wheel is connected to the up and down adjustment cam, and the outer side of the up and down adjustment cam is provided with an up and down adjustment support rod, one end of the up and down adjustment support rod is connected to the bottom of the lamp, and the other end contacts the circumference of the up and down adjustment cam; The left-right adjustment mechanism of the lamp includes a second ratchet wheel with an inner side of a second ratchet wheel active pawl cooperating with the second ratchet wheel active pawl, one side of the second ratchet wheel is connected to a left-right adjustment cam, and a left-right adjustment support rod is provided on the outer side of the left-right adjustment cam, one end of the left-right adjustment support rod is connected to the side surface of the lamp, and the other end is in contact with the circumference of the left-right adjustment cam; A first stop pawl is provided on the inner wall of the first ratchet active pawl. The first stop pawl is staggered with the ratchet teeth on the circumference of the first ratchet. When the first ratchet active pawl rotates clockwise, the first stop pawl drives the first ratchet to rotate together. When the first ratchet active pawl rotates counterclockwise, the first ratchet active pawl rotates idly. A second stop pawl is provided on the inner wall of the second ratchet active pawl, and the second stop pawl is staggered with the ratchet teeth on the circumference of the second ratchet. When the second ratchet active pawl rotates clockwise, the second ratchet active pawl rotates idly. When the second ratchet active pawl rotates counterclockwise, the second stop pawl drives the second ratchet to rotate together. The first ratchet is installed on the output shaft of the stepper motor in a forward direction, and the second ratchet is installed on the output shaft of the stepper motor in a reverse direction; Rolling bearings are provided at the connections between the first ratchet wheel, the second ratchet wheel and the output shaft of the stepping motor.

2. The automobile headlight adjustment mechanism according to claim 1, characterized in that: The upper and lower adjustment struts and the left and right adjustment struts are provided with a stabilizing guide mechanism at the ends near the lamp, and the stabilizing guide mechanism includes an upper and lower adjustment guide plate and a left and right adjustment guide plate fixed on the lamp mounting bracket, the upper and lower adjustment guide plate and the left and right adjustment guide plate are perpendicular to each other, an upper and lower adjustment strut slide groove is provided on the upper and lower adjustment guide plate, a first pulley is provided at the end of the upper and lower adjustment strut, the first pulley is located in the upper and lower adjustment strut slide groove, the left and right adjustment guide plate is provided with a left and right adjustment strut slide groove, a second pulley is provided at the end of the left and right adjustment strut, and the second pulley is located in the left and right adjustment strut slide groove.

3. The automobile headlight adjustment mechanism according to claim 1, characterized in that: A rubber sleeve is provided on the outside of the lamp and is fixed on the lamp mounting bracket.

4. The automobile headlight adjustment mechanism according to claim 1, characterized in that: The radians of the contour curves of the outer peripheral surfaces of the up-down adjustment cam and the left-right adjustment cam are controllable.

5. The automobile headlight adjustment mechanism according to claim 1, characterized in that: The ends of the upper and lower adjustment struts contacting the circumferential surfaces of the upper and lower adjustment cams are in arc shape, and the ends of the left and right adjustment struts contacting the circumferential surfaces of the left and right adjustment cams are in arc shape.

6. The automobile headlight adjustment mechanism according to claim 1, characterized in that: The stepper motor has forward and reverse rotation functions, and a button for controlling the forward and reverse rotation of the stepper motor is provided on the vehicle instrument panel.

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