An angle-adjustable LED automobile lamp

Abstract

This invention relates to the field of automotive lighting technology, specifically an adjustable-angle LED automotive light, comprising: a bracket on which the light body is rotatably mounted; a fourth gear and a first bevel gear coaxially fixed and coaxially connected to the rotating shaft of the light body; an electric drive unit mounted on the bracket, the output shaft of which is connected to the fourth gear via a clutch; and an elastic telescopic rod slidably mounted on the bracket, the elastic telescopic rod having a second bevel gear adapted to the first bevel gear, and a locking member connected to the elastic telescopic rod. When the clutch and the fourth gear are engaged, the locking member is locked; when the clutch and the fourth gear are disengaged, the locking member is unlocked. This allows for alternating manual and electronic adjustment, simplifying the structural design and improving the system's reliability and environmental adaptability.

Description

Technical Field

[0001] This invention relates to the field of automotive lighting technology, specifically an adjustable-angle LED automotive headlight. Background Technology

[0002] As a critical lighting component for nighttime driving and in adverse weather conditions, the accuracy of automotive headlights directly impacts driving safety. With the widespread adoption of LED lighting technology, adjustable headlight structures are widely used in various vehicle models to meet lighting needs under different loads and road conditions. Currently, the mainstream angle adjustment methods are mainly divided into manual and electric adjustment. Manual adjustment typically uses an operating mechanism to directly drive gear transmission, changing the posture of the headlight reflector or lamp body for headlight angle calibration during installation or maintenance; while electric adjustment relies on a micro motor and reduction mechanism to achieve precise control, allowing for flexible adjustment by the driver or the vehicle's infotainment system.

[0003] In composite headlight structures that combine manual and electric adjustment functions, achieving a smooth transition between the two adjustment modes is a significant technical challenge. In traditional designs, the manual and electric adjustment mechanisms often share the same transmission path on the headlight shaft. When one adjustment mode is active, if the other path is not completely disconnected, motion interference can easily occur. For example, during manual adjustment, if the worm gear reducer of the electric adjustment mechanism remains connected to the shaft, its one-way self-locking characteristic will create significant resistance to manual operation. In severe cases, this can even lead to gear jamming and damage, affecting not only the feel of operation but also shortening the lifespan of the transmission components.

[0004] Therefore, in some solutions that combine manual fine-tuning and electric control functions, electronically controlled clutches or solenoid valves are often used to switch the power path. While these solutions achieve functional separation, they are structurally complex, costly, and rely on the timing control of the electronic control logic. If the control signal deviates or the actuator response lags, it can still lead to asynchronous engagement and unlocking, causing transmission shock or mechanism lockup. This affects the reliable interlocking and sequential switching between manual and electric adjustment. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable-angle LED automotive light to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An adjustable-angle LED automotive light, comprising: A bracket on which the headlight body is rotatably mounted; The fourth gear and the first bevel gear, which are coaxially fixed, are coaxially fixedly connected to the rotating shaft of the headlight body; An electric drive unit is mounted on the bracket, and the output shaft of the electric drive unit is connected to the fourth gear via a clutch. An elastic telescopic rod is slidably mounted on the bracket. The elastic telescopic rod is provided with a second bevel gear that is adapted to the first bevel gear, and a locking member is connected to the elastic telescopic rod. When the clutch and the fourth gear are engaged, the locking member is locked. When the clutch and the fourth gear are disengaged, the locking member is unlocked.

[0007] As described above, the adjustable-angle LED automotive headlight includes a guide sleeve fixedly mounted on the bracket and a drive shaft slidably disposed through the guide sleeve. The lower end of the drive shaft is fixed with a second bevel gear that meshes with or separates from the first bevel gear.

[0008] As described above, the adjustable-angle LED automotive headlight has a second cylindrical spring sleeved on the drive shaft. One end of the second cylindrical spring is connected to the limiting ring on the drive shaft, and the other end is connected to the guide sleeve. The second cylindrical spring is in a compressed state.

[0009] As described above, the adjustable-angle LED car headlight has the drive shaft passing through a limiting sleeve fixed on the bracket and slidably connected to the limiting sleeve via an axial limiting member. When the second bevel gear meshes with the first bevel gear, the axial limiting member disengages from the limiting state.

[0010] As described above, the adjustable-angle LED automotive headlight includes a clutch component comprising a second gear and a third gear fixed coaxially. The third gear is rotatably mounted on a sliding component, which is slidably mounted on a guide component fixed to the bracket. The sliding component is driven to slide by an electric telescopic rod mounted on the guide component.

[0011] As described above, the adjustable-angle LED automotive headlights include an electric drive unit that is fixedly mounted on the bracket and a worm gear connected to the output shaft of the drive motor. The worm gear meshes with a worm wheel that is rotatably mounted on the bracket. A first gear is coaxially fixed on the worm gear, and the first gear is properly matched with the second gear.

[0012] As described above, for an adjustable-angle LED automotive headlight: the locking member is fixed to the drive shaft, and a locking groove is formed on the locking member. When the convex shaft fixedly installed on the sliding member is engaged in the locking groove, the locking member is in a locked state.

[0013] As described above, the adjustable-angle LED car headlight has an L-shaped locking component and a vertical shaft fixed thereon. The vertical shaft passes through the sliding sleeve fixed by the guide sleeve and is fixedly connected to the sliding sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The flexible telescopic rod is designed to keep the rod separated from the rotating shaft of the headlight body in the initial state. The headlight body is locked in one direction only by the worm gear mechanism in the electronic adjustment system, ensuring that the transmission path is independent and interference-free during electronic adjustment and effectively avoiding jamming or gear breakage caused by double locking. When manual adjustment is required, the locking component unlocks first, and then the flexible telescopic rod, driven by the operation, engages the second bevel gear with the first bevel gear. This sequential switching process relies entirely on the physical interlocking and stroke control of the mechanical structure, without the need for sensors or electronic control logic. Therefore, the switching timing is precise and reliable, eliminating the problem of asynchronous action that may be caused by electronic control delay or signal error. This fundamentally prevents locking or damage caused by path conflict during switching, and realizes the alternating connection between manual and electronic adjustment, which simplifies the structural design and improves the reliability and environmental adaptability of the system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an adjustable-angle LED car headlight.

[0016] Figure 2 This is a side view of an adjustable-angle LED car headlight.

[0017] Figure 3 This is a structural diagram of the electric drive component, clutch component, and elastic telescopic rod component in an adjustable-angle LED automotive headlight.

[0018] Figure 4 This is a side view of the electric drive unit, clutch unit, and elastic telescopic rod in an adjustable-angle LED automotive headlight.

[0019] Figure 5 This is an exploded view of the electric drive components, clutch components, and elastic telescopic rods in an adjustable-angle LED automotive headlight.

[0020] Figure 6 This is a schematic diagram of the electric drive component in an adjustable-angle LED automotive headlight.

[0021] Figure 7 This is a structural diagram of the electric drive component in an adjustable-angle LED automotive headlight from another angle.

[0022] Figure 8This diagram illustrates the state changes of the electric drive components, clutch components, and elastic telescopic rods in an adjustable-angle LED automotive headlight from electric drive adjustment to manual adjustment.

[0023] In the diagram: 1. Headlight body; 2. Bracket; 3. Drive motor; 4. Worm gear; 5. Worm wheel; 6. First gear; 7. Second gear; 8. Third gear; 9. Guide component; 901. Slide groove; 10. Sliding component; 11. Electric telescopic rod; 12. Cam shaft; 13. Fourth gear; 14. First bevel gear; 15. Second bevel gear; 16. Limiting ring; 17. Sliding sleeve; 18. Drive shaft; 1801. First limiting block; 19. Limiting sleeve; 1901. Limiting groove; 20. Second cylindrical spring; 21. Locking component; 2101. Locking groove; 22. Vertical shaft; 23. Guide sleeve. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Please see Figure 1 - Figure 8 As one embodiment of the present invention, an adjustable-angle LED automotive light includes: Bracket 2, on which the vehicle headlight body 1 is rotatably mounted; The fourth gear 13 and the first bevel gear 14, which are coaxially fixed, are coaxially fixedly connected to the rotating shaft of the headlight body; An electric drive unit is mounted on the bracket 2, and the output shaft of the electric drive unit is connected to the fourth gear 13 via a clutch. An elastic telescopic rod is slidably mounted on the bracket. The elastic telescopic rod is provided with a second bevel gear 15 that is adapted to the first bevel gear 14, and a locking member 21 is connected to the elastic telescopic rod. When the clutch and the fourth gear 13 are engaged, the locking member 21 is locked. When the clutch and the fourth gear 13 are disengaged, the locking member 21 is unlocked.

[0026] In the initial state, the elastic telescopic rod is at its highest point of travel, keeping the second bevel gear 15 disengaged from the first bevel gear 14, thus cutting off the transmission path. This allows the headlight body 1 to only be driven by the electric drive component to activate the clutch and rotate the fourth gear 13, thereby driving the shaft of the headlight body 1 to rotate and achieve electric angle adjustment. At this time, the locking component is in a locked state, preventing the elastic telescopic rod from accidentally moving downwards and opening the manual transmission path, thus avoiding interference caused by the simultaneous operation of the two modes. When manual adjustment is required, the clutch disengages from the fourth gear 13. Simultaneously, the locking component 21 is unlocked, and the elastic telescopic rod is pushed downward. The elastic telescopic rod drives the second bevel gear 15 to move towards and engage with the first bevel gear 14. At this time, the elastic telescopic rod can be rotated, driving the rotating shaft of the headlight body 1 to rotate, completing the manual angle adjustment. After the manual adjustment is completed, the downward pressure operation on the elastic telescopic rod is released, the elastic telescopic rod moves upward to reset, the second bevel gear 15 separates from the first bevel gear 14, the clutch is reset, and the locking component 21 is locked again, restoring the transmission connection of the electric adjustment and completing the smooth switching between the two adjustment modes.

[0027] This sequential switching process relies entirely on the physical interlocking and stroke control of the mechanical structure, without the need for sensors or electronic control logic. Therefore, the switching timing is precise and reliable, eliminating the problem of asynchronous action that may be caused by electronic control delay or signal error. It fundamentally prevents locking or damage caused by path conflict during the switching process, and realizes the alternating connection of manual and electric adjustment, which simplifies the structural design and improves the reliability and environmental adaptability of the system.

[0028] Please see Figures 3-5 The elastic telescopic rod includes a guide sleeve 23 fixedly installed on the bracket and a drive shaft 18 slidably disposed through the guide sleeve 23. The lower end of the drive shaft 18 is fixed with a second bevel gear 15 that meshes with or separates from the first bevel gear 14. A second cylindrical spring 20 is sleeved on the drive shaft 18. One end of the second cylindrical spring 20 is connected to the limiting ring 16 on the drive shaft 18, and the other end is connected to the guide sleeve. The second cylindrical spring 20 is in a compressed state.

[0029] When manual fine-tuning of the headlight body 1 is required, the operator drives the drive shaft 18 to move using a Phillips screwdriver. In this process, the Phillips screwdriver first drives the drive shaft 18 and the second bevel gear 15 to move axially toward the first bevel gear 14. When the second bevel gear 15 and the first bevel gear 14 reach the meshing state, the drive shaft 18 is rotated to drive the second bevel gear 15 to rotate, which in turn drives the first bevel gear 14 to rotate, thereby driving the shaft of the headlight body 1 to rotate, thus realizing the manual adjustment of the headlight body 1 angle. After the adjustment is completed, the Phillips screwdriver is pulled out, and the compressed second cylindrical spring 20 will apply a reset thrust to the limit ring 16, driving the drive shaft 18 and the second bevel gear 15 to move upward to reset, so that the second bevel gear 15 and the first bevel gear 14 are separated again.

[0030] The drive shaft 18 passes through the limiting sleeve 19 fixed on the bracket 2 and is slidably connected to the limiting sleeve 19 through an axial limiting member. When the second bevel gear 15 meshes with the first bevel gear 14, the axial limiting member disengages from the limiting state.

[0031] In one embodiment, the axial limiting member includes a first limiting block 1801 formed on the drive shaft 18 and a limiting groove 1901 formed in the limiting sleeve 19. The first limiting block 1801 is slidably installed in the limiting groove 1901 to achieve axial sliding. It should be noted that when the second bevel gear 15 meshes with the first bevel gear 14, the first limiting block 1801 moves out of the limiting groove 1901.

[0032] In this embodiment, the axial limiting component, in conjunction with the second cylindrical spring 20, ensures that the drive shaft 18 will not rotate arbitrarily, ensuring that the manual transmission path remains disconnected in the initial electric adjustment state, thus avoiding accidental interference with the electric adjustment process. When the drive shaft 18 moves downward until the first limiting block 1801 moves out of the limiting groove 1901, the drive shaft 18 can rotate freely, thereby providing rotation conditions for subsequent manual adjustment. At the same time, the synchronous disengagement mechanism of the first limiting block 1801 effectively avoids accidental rotation of the drive shaft 18 when engagement is not completed or locking is not released, thereby preventing gear grinding, mechanism jamming and other faults, significantly improving the operational safety and mechanism durability of the manual adjustment process.

[0033] Please see Figures 3-5 The clutch includes a second gear 7 and a third gear 8 fixed coaxially. The third gear 8 is rotatably mounted on a sliding member 10. The sliding member 10 is slidably mounted on a guide member 9 fixed to the bracket 2, and the sliding member 10 is driven to slide by an electric telescopic rod 11 mounted on the guide member 9.

[0034] Specifically, a groove 901 is formed on the guide member 9, and the sliding member 10 is slidably installed in the groove 901 to achieve sliding guidance of the sliding member 10.

[0035] In this embodiment, the drive sliding member 10 slides along the slide groove 901. When the electric telescopic rod 11 extends, it drives the coaxially fixed second gear 7 and third gear 8 to move, so that the third gear 8 and fourth gear 13 mesh. At this time, the power output by the electric drive member can be transmitted to the rotating shaft of the headlight body 1 through the third gear 8 and the fourth gear 13 in sequence to realize electric angle adjustment. When it is necessary to switch to manual adjustment mode, the electric telescopic rod 11 shortens, pulls the coaxial second gear 7 and third gear 8 to move back, so that the third gear 8 and fourth gear 13 disengage, cut off the electric transmission path, and leave transmission space for manual adjustment. The action process is simple and direct. With the transmission switching logic of the elastic telescopic rod, it is further ensured that the two adjustment modes will not be conducted at the same time.

[0036] Further, please refer to Figure 6 and Figure 7 The electric drive component includes a drive motor 3 fixedly mounted on the bracket 2 and a worm gear 4 connected to the output shaft of the drive motor 3. The worm gear 4 meshes with a worm wheel 5 rotatably mounted on the bracket. A first gear 6 is coaxially fixed on the worm gear, and the first gear 6 is properly matched with the second gear 7.

[0037] In this embodiment, when the angle of the headlight body 1 needs to be electronically adjusted, the drive motor 3 is started, and its output shaft drives the worm gear 4 to rotate. Since the worm gear 4 and the worm wheel 5 are engaged, the worm wheel 5 rotates accordingly. Through the transmission chain composed of the first gear 6, the clutch and the fourth gear 13, the shaft of the headlight body 1 is finally driven to rotate, realizing the electric adjustment of the headlight angle. During this process, since no external force is applied to the drive shaft 18, the second bevel gear 15 and the first bevel gear 14 remain separated, so that the electronic adjustment transmission path and the manual adjustment transmission path do not interfere with each other, effectively avoiding motion conflicts or mechanical lock-up that may be caused by structural coupling, and ensuring the smoothness and reliability of the electronic adjustment process.

[0038] Furthermore, the worm gear 4 and worm wheel 5 have a unidirectional transmission characteristic, meaning that the rotation of the worm gear 4 can drive the rotation of the worm wheel 5, while the rotation of the worm wheel 5 cannot drive the worm gear 4 in the reverse direction. This provides dual protection in terms of function: on the one hand, the drive motor 3 can reliably adjust the headlight angle through this transmission mechanism; on the other hand, when the headlight body 1 tends to deflect due to external disturbances such as bumps and vibrations during vehicle operation, since the worm wheel 5 cannot drive the worm gear 4 in the reverse direction, the disturbance will not be transmitted to the shaft of the drive motor 3, thereby achieving mechanical self-locking of the headlight body 1. This self-locking effect ensures that the headlight can stably maintain the set position after the angle adjustment is completed, effectively resisting vibration interference during driving, ensuring a constant illumination angle, and further improving the safety of nighttime driving and the overall reliability of the lighting system.

[0039] Furthermore, the locking member 21 is fixed to the drive shaft 18, and a locking groove 2101 is formed on the locking member 21. When the convex shaft 12 fixedly installed on the sliding member 10 is inserted into the locking groove 2101, the locking member 21 is in a locked state.

[0040] In a preferred embodiment, the locking member 21 is L-shaped, and a vertical shaft 22 is fixed on the locking member 21. The vertical shaft 22 passes through the sliding sleeve 17 fixed by the guide sleeve 23 and is fixedly connected to the sliding sleeve 17.

[0041] When the electric telescopic rod 11 extends and pushes the sliding member 10 to move, causing the third gear 8 to mesh with the fourth gear 13, the sliding member 10 drives the cam shaft 12 to move synchronously. The cam shaft 12 is engaged in the locking groove 2101 of the locking member 21, restricting the movement of the locking member 21, thereby restricting the downward movement of the drive shaft 18 and locking the manual transmission path, ensuring that the manual path remains disconnected during electric adjustment. When the electric telescopic rod 11 shortens and pulls the sliding member 10 to reset, the cam shaft 12 moves together with the sliding member 10 and disengages from the locking groove 2101, releasing the axial restriction on the locking member 21. The drive shaft 18 can then be forced to move downward, completing the conduction of the manual transmission path. Through this mechanical linkage structure, the synchronous action of clutch switching and locking / unlocking of the locking member is realized. The timing matching is guaranteed entirely by the physical structure, further improving the reliability of mode switching.

[0042] It should be noted that the switching between manual and electronic adjustment relies entirely on the mechanical structure, which makes the timing of separation and engagement between the two and the headlight body more accurate. Compared with the existing electronic control engagement and disengagement methods, the timing error is smaller, which reduces the occurrence of interference and locking to a certain extent.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable-angle LED automotive light, characterized in that, include: A bracket on which the headlight body is rotatably mounted; The fourth gear and the first bevel gear, which are coaxially fixed, are coaxially fixedly connected to the rotating shaft of the headlight body; An electric drive unit is mounted on the bracket, and the output shaft of the electric drive unit is connected to the fourth gear via a clutch. An elastic telescopic rod is slidably mounted on the bracket. The elastic telescopic rod is provided with a second bevel gear that is adapted to the first bevel gear, and a locking member is connected to the elastic telescopic rod. When the clutch and the fourth gear are engaged, the locking member is locked. When the clutch and the fourth gear are disengaged, the locking member is unlocked.

2. The adjustable-angle LED automotive light according to claim 1, characterized in that, The elastic telescopic rod includes a guide sleeve fixedly installed on the bracket and a drive shaft that slides through the guide sleeve. The lower end of the drive shaft is fixed with a second bevel gear that meshes with or separates from the first bevel gear.

3. The adjustable-angle LED automotive light according to claim 2, characterized in that, A second cylindrical spring is sleeved on the drive shaft. One end of the second cylindrical spring is connected to the limiting ring on the drive shaft, and the other end is connected to the guide sleeve. The second cylindrical spring is in a compressed state.

4. The adjustable-angle LED automotive light according to claim 2, characterized in that, The drive shaft passes through the limiting sleeve fixed on the bracket and is slidably connected to the limiting sleeve by an axial limiting member. When the second bevel gear meshes with the first bevel gear, the axial limiting member disengages from the limiting state.

5. An adjustable-angle LED automotive light according to claim 2, characterized in that, The clutch includes a second gear and a third gear fixed coaxially. The third gear is rotatably mounted on a sliding member. The sliding member is slidably mounted on a guide member fixed to the bracket, and the sliding member is driven to slide by an electric telescopic rod mounted on the guide member.

6. An adjustable-angle LED automotive light according to claim 5, characterized in that, The electric drive unit includes a drive motor fixedly mounted on the bracket and a worm gear connected to the output shaft of the drive motor, the worm gear meshing with a worm wheel rotatably mounted on the bracket; A first gear is coaxially fixed on the worm gear, and the first gear is properly matched with the second gear.

7. An adjustable-angle LED automotive light according to claim 5, characterized in that, The locking member is fixed to the drive shaft, and a locking groove is formed on the locking member. When the convex shaft fixedly installed on the sliding member is inserted into the locking groove, the locking member is in a locked state.

8. An adjustable-angle LED automotive light according to claim 7, characterized in that, The locking member is L-shaped and a vertical shaft is fixed on it. The vertical shaft passes through the sliding sleeve fixed by the guide sleeve and is fixedly connected to the sliding sleeve.

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