Self-adjusting car lamp structure

Abstract

The invention relates to the technical field of automobile headlights, and discloses a self-adjusting automobile lamp structure which is characterized in that a lens frame is arranged at the position of a dipped headlight of an automobile headlight, a lens is arranged in the lens frame, and a frame cavity is annular and is arranged at the front end of the lens frame; the moving ring can be influenced by inertia in the frame cavity to move towards the driving ring in the automobile acceleration process, a first magnetic block set is arranged on the side, facing the driving ring, of the moving ring, a springback structure is arranged on the other side of the moving ring, one end of the springback structure is connected with the moving ring, and when the moving ring is not influenced by inertia force, the moving ring is restored to the initial position in the frame cavity. A second magnetic block set is arranged on the side, facing the moving ring, of the driving ring, the driving ring and the lens fixing ring are connected through a traction rope, the moving ring and the lens fixing ring limit rotation, and when the first magnetic block set is close to the second magnetic block set, the second magnetic block set drives the driving ring to rotate under the action of a magnetic field. And the lens fixing ring can move in the frame cavity.

Description

Technical Field

[0001] The invention relates to the technical field of automobile headlights, in particular to a self-adjusting automobile headlight structure. Background Art

[0002] Automobile headlights, also known as car headlamps, refer to devices installed on both sides of the head of a car for lighting the road at night. It can be divided into a two-lamp system and a four-lamp system, and is usually composed of a lamp housing, reflector, bulb, photometric lens, circuit board, connector, and possible lenses, lamp holders, light adjustment devices and other parts. The lamp housing, as the outermost part, is usually made of sturdy and durable plastic or metal to protect the internal electrical components; the reflector is made of aluminum or other metals to reflect the light emitted by the bulb and control the direction and distribution of the light. The bulb is the light source part. After the light is reflected by the reflector, it is distributed and diffused through the photometric lens to produce a uniform lighting effect. The circuit board and connector are used to connect the headlights to the vehicle's electrical system and provide power to the bulb. Some advanced headlight systems may also include components such as lenses to further focus and adjust the light, as well as light adjustment devices to ensure that the light can be properly projected onto the road to provide the driver with the best field of vision.

[0003] There are usually only two illumination modes in car headlights, namely low beam and high beam. When driving in China, in order to avoid interfering with oncoming vehicles, usually only low beam can be used. As the speed increases, the illumination range of the low beam may be too small. When danger is illuminated, the driver may not react in time, resulting in danger. Therefore, a headlight that can be more easily adjusted is needed. Summary of the invention

[0004] (I) Technical problems to be solved: In view of the deficiencies of the prior art, the present invention provides a self-adjusting headlight structure, which has the advantage of adjusting the headlight illumination range according to the vehicle speed, thereby solving the problem that the low beam headlight has a slightly smaller illumination range at high speeds.

[0005] (II) Technical solution: In order to achieve the above-mentioned purpose of adjusting the illumination range of the headlight according to the vehicle speed, the present invention provides the following technical solution: a self-adjusting headlight structure, including a lens frame and a frame cavity, wherein the lens frame is arranged at the front end position of the lamp shell of the vehicle low beam headlight, and a lens is arranged in the lens frame. The frame cavity is annular and arranged at the front end of the lens frame, and a moving ring, a driving ring and a lens fixing ring are arranged in sequence in the frame cavity from the front end to the headlight light source. The moving ring can be displaced toward the driving ring in the frame cavity under the influence of inertia during the acceleration of the vehicle. The moving ring is provided with a first magnetic block group on one side facing the driving ring, and a rebound structure is provided on the other side. One end of the rebound structure is connected to the moving ring, and the other end is connected to the The inner wall of the frame cavity is connected, and when the moving ring is not subjected to the inertial force, the moving ring is restored to its initial position in the frame cavity. A second magnetic block group is provided on the side of the driving ring facing the moving ring. The magnetic blocks in the first magnetic block group and the second magnetic block group are respectively arranged along the circumference of the edge of the moving ring and the driving ring, and the magnetic properties of adjacent magnetic blocks are different. The initial positions of the magnetic blocks in the first magnetic block group and the second magnetic block group do not overlap. The driving ring is connected to the lens fixing ring by a traction rope, and the driving ring is fixed in position, and the moving ring and the lens fixing ring are limited in rotation. When the first magnetic block group approaches the second magnetic block group, the second magnetic block group drives the driving ring to rotate under the action of the magnetic field. A lens is arranged on the lens fixing ring, and the lens fixing ring can move in the frame cavity.

[0006] Preferably, a connecting ring is provided between the driving ring and the lens fixing ring, the traction rope passes through the connecting ring, and a supporting body is provided between the connecting ring and the lens fixing ring, the supporting body is elastic and does not affect the traction rope pulling the lens fixing ring.

[0007] Preferably, the connecting ring is provided with a chamfer at the position where the traction rope passes through.

[0008] Preferably, grooves are arranged in array at the edges of the movable ring and the lens fixing ring, and limiting blocks with positions and shapes corresponding to the grooves are arranged on the inner wall of the frame cavity.

[0009] Preferably, a limiting block for limiting the translation of the driving ring and the connecting ring in the frame cavity is provided beside the driving ring and the connecting ring.

[0010] Preferably, a sliding block is provided on the side of the lens fixing ring where no traction rope is provided, and the sliding block moves with the lens fixing ring in the frame cavity.

[0011] Preferably, the frame cavity is provided with an air hole, which is in a blocked state when the slider is in the initial position, and is in an open state when the slider moves with the lens fixing ring, so that the gas outside the frame cavity can enter the lens frame through the air hole.

[0012] Preferably, the tail end of the slider is provided with a chamfer.

[0013] Preferably, the rebound structure is a spring.

[0014] (III) Beneficial effects: Compared with the prior art, the present invention provides a self-adjusting headlight structure with the following beneficial effects: 1. The self-adjusting headlight structure can automatically adjust the illumination range of the headlight according to the acceleration state of the car without the need for manual intervention by the driver. This intelligent adjustment method not only improves the convenience of driving, but also ensures the best lighting effect at different vehicle speeds. During acceleration, the vehicle needs more forward vision to ensure safety. The structure automatically adjusts the divergence angle of the headlight light to effectively increase the forward visible range and reduce potential dangers caused by unclear vision. At the same time, it avoids the glare problem caused by the high beam to oncoming vehicles, further improving driving safety. The driver does not need to be distracted to manually adjust the headlight and can focus more on road conditions and driving operations. This design reduces the driver's time spent in driving. The intelligent headlight adjustment system makes the driving process smoother and more comfortable. As the vehicle speed increases, the headlights automatically adjust the illumination range, providing the driver with a clearer field of vision and enhancing the driving pleasure and confidence. The illumination range is farther than that of the original low beam, but it does not reach the parallel light of the high beam, thus avoiding interference to oncoming vehicles. By automatically adjusting the illumination range of the headlights, the structure can reduce traffic accidents caused by unclear vision or glare, which not only protects the safety of the driver and passengers, but also reduces the threat to public transportation safety. The design of the structure is relatively simple and modular, making maintenance and upgrading easier. Once a failure occurs or an upgrade is required, the relevant components can be easily replaced or upgraded, reducing the maintenance cost and difficulty.

[0015] 2. The self-adjusting lamp structure, when the space for the car headlight is limited, introduces a connecting ring as a fulcrum, so that the angle change of the tow rope can achieve a larger displacement of the lens fixing ring in a smaller space. This design not only improves the space utilization, but also ensures the compactness and overall aesthetics of the lamp structure. The setting of the connecting ring increases the connection points between the drive ring and the lens fixing ring, thereby improving the stability of the entire lamp structure. During the driving process of the vehicle, this enhanced stability helps to reduce the risk of lamp failure caused by vibration or bumps. By changing the two ends of the tow rope angle change from the drive ring and the lens fixing ring to the drive ring and the connecting ring, a smaller angle change brings a larger displacement of the lens fixing ring. This design improves the utilization efficiency of the tow rope and makes the lamp adjustment more sensitive and accurate. The chamfer set on the connecting ring at the point where the tow rope passes through effectively reduces the shear force on the tow rope, thereby reducing the wear rate of the tow rope and extending its service life. This not only reduces the frequency and cost of replacing the tow rope, but also improves the overall reliability of the lamp structure.

[0016] 3. The self-adjusting lamp structure realizes the stable positioning and guidance of the lens assembly in the frame cavity by cooperating the grooves on the edge of the moving ring and the lens fixing ring with the limit blocks on the inner wall of the frame cavity, ensuring that the lens assembly can move accurately and smoothly when adjusting the focal length or position without offset or shaking, thereby improving the focusing performance and optical effect of the lamp. The limit block design next to the driving ring and the connecting ring effectively limits the translation of the two components in the frame cavity, preventing the position change of the lens assembly due to accidental vibration or external force, and enhancing the reliability and stability of the lamp. The slider on the lens fixing ring and the air hole design on the frame cavity cleverly realize The air circulation control inside the headlight is realized. When the slider is in the initial position, the air hole is blocked to prevent dust, water vapor and other impurities from entering the headlight, keeping the headlight clean and dry. When the slider moves with the lens fixing ring, the air hole opens to allow external gas to enter the lens frame. Especially when the car is moving at high speed, the principle of natural convection is used to enhance the heat dissipation effect inside the headlight, effectively reduce the operating temperature of the headlight, and extend the service life of the headlight. The chamfered design at the tail end of the air hole not only further optimizes the flow path of the airflow and improves the heat dissipation efficiency, but also reduces the resistance of the airflow to a certain extent, making the entire heat dissipation process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the interior of the frame cavity of the present invention.

[0019] Figure 3 It is a schematic diagram of the drive ring connection structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the rotation of the driving ring of the present invention.

[0021] Figure 5 Schematic diagram of the second magnetic block assembly of the present invention.

[0022] Figure 6 This is a schematic cross-sectional view of the connecting ring.

[0023] Figure 7 It is a schematic diagram of the first magnetic block group of the present invention.

[0024] Figure 8 Schematic diagram of the pores of the present invention.

[0025] Fig. 9 This is a schematic diagram of the location of the frame cavity of the present invention.

[0026] In the figure: 1. lens frame; 2. frame cavity; 10. lamp housing; 21. moving ring; 22. driving ring; 23. connecting ring; 24. lens fixing ring; 25. traction rope; 101. lens; 211. rebound structure; 212. first magnetic block group; 213. limit block; 221. second magnetic block group; 241. slider; 242. air hole; 251. support body. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 and Fig. 9 The self-adjusting headlight structure comprises a lens frame 1 and a frame cavity 2, wherein the lens frame 1 is arranged at the front end of a lamp housing 10 of a low-beam headlight of an automobile, a lens 101 is arranged in the lens frame 1, the frame cavity 2 is annular and arranged at the front end of the lens frame 1, and a moving ring 21, a driving ring 22 and a lens fixing ring 24 are arranged in sequence from the front end to the headlight light source in the frame cavity 2, and the moving ring 21 can be displaced toward the driving ring 22 in the frame cavity 2 under the influence of inertia during the acceleration of the automobile, the moving ring 21 is provided with a first magnetic block group 212 on one side of the moving ring 21 facing the driving ring 22, and a rebound structure 211 is provided on the other side, one end of the rebound structure 211 is connected to the moving ring 21, and the other end is connected to the inner wall of the frame cavity 2, so that the moving ring 21 can be restored when it is not subjected to the inertial force. The drive ring 22 is restored to its initial position in the frame cavity 2, and a second magnetic block group 221 is provided on the side of the moving ring 21 facing the drive ring 22. The magnetic blocks in the first magnetic block group 212 and the second magnetic block group 221 are respectively arranged along the circumference of the edge of the moving ring 21 and the drive ring 22, and the magnetic properties of adjacent magnetic blocks are different. The initial positions of the magnetic blocks in the first magnetic block group 212 and the second magnetic block group 221 do not overlap. The drive ring 22 and the lens fixing ring 24 are connected by a traction rope 25, and the drive ring 22 is fixed in position, and the moving ring 21 and the lens fixing ring 24 are limited in rotation. When the first magnetic block group 212 approaches the second magnetic block group 221, the second magnetic block group 221 drives the drive ring 22 to rotate under the action of the magnetic field. The lens 101 is arranged on the lens fixing ring 24, and the lens fixing ring 24 can move in the frame cavity 2.

[0029] When the vehicle is accelerating, under the action of acceleration, the moving ring 21 can displace backward under the action of inertia force in the frame cavity 2. The moving ring 21 is provided with a first magnetic block group 212 on one side facing the lens fixing ring 24, and a rebound structure 211 on the other side connected to the inner wall of the frame cavity 2. The driving ring 22 is provided with a second magnetic block group 221 on one side facing the moving ring 21. The magnetic blocks in the first magnetic block group 212 and the second magnetic block group 221 are both arranged in a circumferential array, and the adjacent magnetic blocks have different magnetic properties. The positions of the magnetic blocks of the second magnetic block group 221 and the first magnetic block group 212 do not coincide under normal conditions. When the moving ring 21 moves backward, the distance from the driving ring 22 decreases. Under the action of the magnetic field of the first magnetic block group 212, the second magnetic block group 221 drives the driving ring 22 to rotate. During the rotation process, the driving ring 22 pulls the traction rope 25, reducing the angle between the traction rope 25 and the driving ring 22. Since the length of the traction rope 25 is fixed, the traction rope 25 will drive the lens fixing ring 24 at the other end to displace forward. In automotive headlights, convex lenses or Fresnel lenses are usually used, and their core function is to control the light divergence angle. The lens formula is: , where f is the focal length of the lens, u is the distance from the light source (LED) to the lens (object distance), and v is the image distance after the light is focused (usually infinity in the headlight, i.e., parallel light). In the low beam, the LED is slightly deviated from the focus (u < f) and cooperates with the light shield to diffuse the light using the edge area of the lens. In the high beam, the LED is aligned with the focus (u = f) to ensure parallel light output. When the traction rope 25 drives the lens fixing ring 24 to displace forward, u increases, causing the light to diverge and the illumination range to move forward. As the vehicle accelerates, in the low beam state, the illumination range can also be increased, which not only avoids the influence of the high beam on oncoming vehicles but also ensures that the vehicle itself has an increased visible range during acceleration, reducing the accident rate.

[0030] A connecting ring 23 is provided between the driving ring 22 and the lens fixing ring 24. The traction rope 25 passes through the connecting ring 23, and a support 251 is provided between the connecting ring 23 and the lens fixing ring 24. The support 251 is elastic and does not affect the traction rope 25 pulling the lens fixing ring 24. The connecting ring 23 is provided with a chamfer at the position where the traction rope 25 passes through. Through the setting of the connecting ring 23, a fulcrum is added between the driving ring 22 and the lens fixing ring 24. At the same time, since the two ends of the changing angle of the traction rope 25 change from the driving ring 22 and the lens fixing ring 24 to the driving ring 22 and the connecting ring 23, with a smaller angle change, a larger displacement of the lens fixing ring 24 is achieved, which is more suitable for being arranged in the limited space of the automotive headlight. And through the chamfer, the shear force on the traction rope 25 is reduced, increasing the service life.

[0031] Refer to Figure 2 and Figure 7The movable ring 21 and the lens fixing ring 24 are provided with grooves in an array at their edges, and the inner wall of the frame cavity 2 is provided with a limit block 213 having a position and shape corresponding to the groove, and the drive ring 22 and the connecting ring 23 are provided with a limit block for limiting the translation of the drive ring 22 and the connecting ring 23 in the frame cavity 2.

[0032] See also Figure 8 A slider 241 is provided on the side of the lens fixing ring 24 where the traction rope 25 is not provided. The slider 241 moves with the lens fixing ring 24 in the frame cavity 2. An air hole 242 is provided on the frame cavity 2. The air hole 242 is in a blocked state when the slider 241 is in the initial position. When the slider 241 moves with the lens fixing ring 24, the air hole 242 is in an open state, and the gas outside the frame cavity 2 can enter the lens frame 1 through the air hole 242. The tail end of the slider 241 is chamfered. When the car moves at high speed, air circulation is formed inside and outside the lens frame 1. Because the gas flow speed is fast next to the fast-moving car, the heat exchange effect generated by natural convection is better, which can enhance the heat dissipation inside the headlight. When the car moves slowly or stationary, the entry of dust and water vapor in a stationary state is avoided.

[0033] The rebound structure 211 is a spring.

[0034] See also Fig. 9 The lamp housing 10 is a lens-type vehicle lamp housing, and the front end of the lamp housing 10 is round, for the lens frame 1 to be connected with the lamp housing 10. The above specific connection adopts a traditional tube and sleeve connection structure, such as welding, snap-fit, and threaded connection, which will not be described in detail here. In specific implementation, the lens frame 1 and the lamp housing 10 can also be integrally processed and formed.

[0035] Working principle: When the vehicle is accelerating, under the action of acceleration, the moving ring 21 can generate a backward displacement in the frame cavity 2 under the action of inertia force. On one side of the moving ring 21 facing the lens fixing ring 24, there is a first magnet block group 212, and on the other side, there is a rebound structure 211 connected to the inner wall of the frame cavity 2. On the side of the driving ring 22 facing the moving ring 21, there is a second magnet block group 221. The magnets in the first magnet block group 212 and the second magnet block group 221 are both arranged in a circular array, and the adjacent magnets have different magnetic properties. The positions of the magnets in the second magnet block group 221 and the first magnet block group 212 do not coincide under normal conditions. When the moving ring 21 moves backward, the distance from the driving ring 22 decreases. Under the action of the magnetic field of the first magnet block group 212, the second magnet block group 221 drives the driving ring 22 to rotate. During the rotation process, the driving ring 22 pulls the traction rope 25, reducing the angle between the traction rope 25 and the driving ring 22. Since the length of the traction rope 25 is fixed, the traction rope 25 will drive the lens fixing ring 24 at the other end to generate a forward displacement. In automotive headlights, convex lenses or Fresnel lenses are usually used, and their core function is to control the light divergence angle. The lens formula is: , where f is the focal length of the lens, u is the distance from the light source (LED) to the lens (object distance), and v is the image distance after the light is focused (usually infinite in the car headlight, that is, parallel light). In the low beam, the LED is slightly deviated from the focus (u < f) and cooperates with the light shield to diffuse the light in the edge area of the lens. In the high beam, the LED is aligned with the focus (u = f) to ensure parallel light output. When the traction rope 25 drives the lens fixing ring 24 to generate a forward displacement, u increases, causing the light to diverge and the illumination range to move forward. As the vehicle accelerates, in the low beam state, the illumination range can also be increased, that is, it avoids the influence of the high beam on oncoming vehicles and also ensures that the visibility range is increased during the acceleration movement of the vehicle itself, reducing the accident rate.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-adjusting vehicle lamp structure, comprising a lens frame (1) and a frame cavity (2), wherein the lens frame (1) is arranged at the front end of a lamp housing (10) of a vehicle low-beam lamp, a lens (101) is arranged in the lens frame (1), and the frame cavity (2) is annular and arranged at the front end of the lens frame (1), characterized in that: A moving ring (21), a driving ring (22) and a lens fixing ring (24) are sequentially arranged in the frame cavity (2) from the front end to the light source of the vehicle light. The moving ring (21) can be displaced in the direction of the driving ring (22) under the influence of inertia in the frame cavity (2) during the acceleration of the vehicle. A first magnetic block group (212) is arranged on the side of the moving ring (21) facing the driving ring (22), and a rebound structure (211) is arranged on the other side. One end of the rebound structure (211) is connected to the moving ring (21), and the other end is connected to the inner wall of the frame cavity (2). A second magnetic block group (221) is arranged on the side of the driving ring (22) facing the moving ring (21). The first magnetic block group (212) is arranged on the side of the driving ring (22). The magnetic blocks in the block group (212) and the second magnetic block group (221) are respectively arranged in a circular array along the edge of the moving ring (21) and the driving ring (22), and the magnetism of adjacent magnetic blocks is different. The driving ring (22) and the lens fixing ring (24) are connected via a traction rope (25), and the driving ring (22) is fixed in position. The moving ring (21) and the lens fixing ring (24) are limited in rotation. When the first magnetic block group (212) approaches the second magnetic block group (221), the second magnetic block group (221) drives the driving ring (22) to rotate under the action of the magnetic field. A lens (101) is arranged on the lens fixing ring (24), and the lens fixing ring (24) is movable in the frame cavity (2).

2. The self-adjusting vehicle lamp structure according to claim 1, characterized in that: A connecting ring (23) is provided between the driving ring (22) and the lens fixing ring (24), the traction rope (25) passes through the connecting ring (23), and a supporting body (251) is provided between the connecting ring (23) and the lens fixing ring (24), the supporting body (251) being elastic and not affecting the traction rope (25) pulling the lens fixing ring (24).

3. The self-adjusting vehicle lamp structure according to claim 2, characterized in that: The connecting ring (23) is provided with a chamfer at a position where the traction rope (25) passes through.

4. The self-adjusting vehicle lamp structure according to claim 1, characterized in that: Grooves are arranged in array at the edges of the movable ring (21) and the lens fixing ring (24), and limiting blocks (213) having positions and shapes corresponding to the grooves are arranged on the inner wall of the frame cavity (2).

5. The self-adjusting vehicle lamp structure according to claim 2, characterized in that: Position limiting blocks for limiting the translation of the driving ring (22) and the connecting ring (23) in the frame cavity (2) are provided beside the driving ring (22) and the connecting ring (23).

6. The self-adjusting vehicle lamp structure according to claim 1, characterized in that: A sliding block (241) is provided on the side of the lens fixing ring (24) where the traction rope (25) is not provided, and the sliding block (241) moves with the lens fixing ring (24) in the frame cavity (2).

7. The self-adjusting vehicle lamp structure according to claim 6, characterized in that: The frame cavity (2) is provided with an air hole (242), and the air hole (242) is in a blocked state when the slider (241) is in an initial position; when the slider (241) moves along with the lens fixing ring (24), the air hole (242) is in an open state, and gas located outside the frame cavity (2) can enter the interior of the lens frame (1) through the air hole (242).

8. The self-adjusting vehicle lamp structure according to claim 7, characterized in that: The rear end of the slider (241) is provided with a chamfer.

9. A self-adjusting vehicle lamp structure according to any one of claims 1 to 8, characterized in that: The rebound structure (211) is a spring.

10. The self-adjusting vehicle lamp structure according to claim 1, characterized in that: The lamp housing (10) and the lens frame (1) are integrally formed.

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