A passenger car low beam light beam angle adjusting structure

Abstract

The utility model discloses a kind of passenger car low beam beam angle adjusting structure, including passenger car low beam group support, passenger car low beam group support is connected with lamp shell through center rotating fulcrum component, up-down adjusting fulcrum component and left-right adjusting fulcrum component on, passenger car low beam group is installed in passenger car low beam group support, the rotating fulcrum connecting line between center rotating fulcrum component and up-down adjusting fulcrum component forms left-right angle rotation axis, the rotating fulcrum connecting line between center rotating fulcrum component and left-right adjusting fulcrum component forms up-down angle rotation axis, the initial included angle range formed by up-down angle rotation axis and left-right angle rotation axis is 90 °±10 °, the utility model is optimized by fulcrum layout and driving mode, realize manual correction assembly error, electrically respond to the double adjusting function of the change of load, adjust the problem of jamming is solved simultaneously, give consideration to low cost and high stability.

Description

Technical Field

[0001] This utility model belongs to the field of low beam headlight adjustment technology for buses, specifically relating to a structure for adjusting the beam angle of low beam headlights for buses. Background Technology

[0002] Headlight beam adjustment is crucial for ensuring nighttime driving safety. It involves optimizing the beam angle to reduce glare for oncoming drivers. With the development of automotive electronics, beam adjustment technology has evolved through a clear path, progressing from manual mechanical adjustment to electric adjustment, automatic leveling, and adaptive intelligent lighting. The precision and automation of the adjustment have gradually improved. Compared to passenger cars, buses have larger body sizes, wider ranges of passenger and cargo capacity, and more significant changes in body posture with load, resulting in more prominent low beam deviation issues. Therefore, buses have higher requirements for the timeliness and stability of beam adjustment.

[0003] Currently, the electric adjustment scheme used for the low beam angle of passenger buses is divided into two types based on the motor installation location: external motor and internal motor. Both have obvious drawbacks: External motor: The motor is installed outside the lamp. Although it has the advantages of simple structure and convenient assembly, it requires a large amount of engine compartment space and requires a separate wiring harness to power the motor. It is only suitable for specific models with sufficient engine compartment space. At the same time, the external motor is exposed to the outside of the vehicle body and is easily damaged by external forces such as stone impact and rain erosion. In addition, the motor itself has a high procurement cost, which is not conducive to the control of the overall vehicle cost. Built-in motor: The motor is integrated inside the lamp and can be adapted to bus models with limited cabin space. However, since an additional support point is required after the motor is installed, the initial angle between the fixed support point and the adjustment support point in the vertical direction of the lamp assembly is too small. During the adjustment process, large mechanical resistance is easily generated, which not only reduces the smoothness of beam adjustment, but may also cause the adjustment mechanism to jam, affecting the beam adjustment accuracy and reliability. Therefore, we propose a structure for adjusting the beam angle of low beam headlights for passenger vehicles. Utility Model Content

[0004] The purpose of this invention is to provide a structure for adjusting the beam angle of a passenger vehicle's low beam headlights, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a low beam headlight beam angle adjustment structure for passenger vehicles, including a low beam headlight assembly bracket for passenger vehicles, wherein the low beam headlight assembly bracket for passenger vehicles is connected to the headlight housing via a central rotating fulcrum assembly, an up-down adjusting fulcrum assembly, and a left-right adjusting fulcrum assembly, and the low beam headlight assembly for passenger vehicles is installed on the low beam headlight assembly bracket for passenger vehicles. The line connecting the rotation fulcrums of the central rotation fulcrum assembly and the upper and lower adjustment fulcrum assembly forms a left-right angle rotation axis. The line connecting the rotation fulcrums of the central rotation fulcrum assembly and the left and right adjustment fulcrum assembly forms an upper and lower angle rotation axis. The initial angle range between the vertical rotation axis and the horizontal rotation axis is 90°±10°. The central rotation pivot assembly is used to provide a rotation center for the low beam headlight assembly of the bus and restrict other degrees of freedom in other directions; The up-down adjustment fulcrum assembly adjusts the vertical angle of the bus's low beam headlight assembly with the up-down angle rotation axis as the center. The left and right adjustment pivot assembly adjusts the left and right angles of the bus's low beam headlight assembly in the horizontal direction with the left and right angle rotation axis as the center.

[0006] Preferably, the central pivot assembly includes a ball head screw and a central ball head connector; The central ball joint connector is mounted on the low beam headlight bracket of the bus, the ball head end of the ball screw is rotatably mounted in the central ball joint connector, and the other end of the ball screw is connected to the lamp housing.

[0007] Preferably, the up-and-down adjustment fulcrum assembly includes an upper and lower ball joint connecting seat, a ball joint adjusting screw, an adjusting motor, a motor support slider, and an up-and-down adjusting screw; The upper and lower ball joint connectors are located on the low beam headlight bracket of the bus, below the central ball joint connector. The ball end of the ball joint adjusting screw is rotatably disposed within the upper and lower ball joint connectors. The threaded section of the ball joint adjusting screw is threadedly connected to the output end of the adjusting motor. The adjusting motor is mounted on the motor bracket slider. The motor bracket slider is slidably connected to the lamp housing. One end of the upper and lower adjusting screw is rotatably connected to the lamp housing. The threaded section of the upper and lower adjusting screw is threadedly connected to the motor bracket slider.

[0008] Preferably, when the upper and lower adjustment fulcrum assembly is electrically adjusted, the adjustment motor drives the threaded section of the ball head adjustment screw to extend and retract axially, causing the motor bracket slider to slide along the lamp housing, so that the ball head end of the ball head adjustment screw deflects within the upper and lower ball head connecting seat, thereby realizing the electric adjustment of the upper and lower angles of the bus low beam lamp assembly; When the up-down adjustment fulcrum assembly is manually adjusted, the up-down adjustment screw is rotated, and the motor bracket slider is driven to slide along the lamp housing through the thread, causing the ball end of the ball head adjustment screw to deflect within the upper and lower ball head connecting seat, thereby realizing the manual adjustment of the up-down angle of the bus low beam lamp assembly.

[0009] Preferably, the left and right adjustment fulcrum assembly includes left and right ball joint connectors, ball joint sliders, and left and right adjustment screws; The left and right ball joint connectors are located on the bus low beam headlight bracket to the left of the central ball joint connector. The ball joint end of the ball joint slider is rotatably disposed in the left and right ball joint connectors. The ball joint slider and the left and right adjusting screws are threadedly connected. The left and right adjusting screws are connected to the lamp housing.

[0010] Preferably, the vertical adjustment angle range of the up and down adjustment fulcrum assembly for the low beam headlight assembly of the bus is 3° up and 5° down. Among them, the 3° upper and 3° lower angle adjustment is used to manually correct beam deflection caused by assembly errors before the bus rolls off the production line; The downward 4°-5° angle adjustment is used to electrically correct the upward beam caused by the increased load on the bus body after it leaves the factory.

[0011] Preferably, the horizontal adjustment angle range of the left and right adjustment pivot assembly for the low beam headlight assembly of the bus is 3° to 3°, which is used to manually correct beam deflection caused by assembly errors before the bus rolls off the production line.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Low cost and adaptable to multiple scenarios: Without the need to integrate high-priced components such as ECUs and radars, it reduces manufacturing costs (suitable for low- and mid-range buses) and covers the beam adjustment needs of buses throughout their entire life cycle through a dual mode of "manually correcting assembly errors and electrically responding to load changes," thus solving the problems of high costs and incomplete scenario coverage. 2. Resolve the adjustment sticking issue and improve stability: By setting the initial included angle of the up / down / left / right rotation axis to 90°±10°, the displacement of the motor bracket slider is linearly related to the rotation angle of the bus low beam headlight assembly, avoiding excessive adjustment resistance or jamming caused by non-linear enhancement, and ensuring smooth adjustment during long-term use. 3. Compact structure, suitable for the small space of buses: Each support component is integrated between the lamp housing and the lamp assembly bracket, eliminating the need for an external motor that occupies engine compartment space. Furthermore, lightweight structures such as ball joints and sliders reduce the overall size, making it suitable for the confined installation environment inside bus lights and addressing the space requirements of external motors. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional perspective view of the three-dimensional structure of this utility model; Figure 3 This is a schematic diagram of the initial state structure of the low beam headlight assembly for passenger vehicles according to this utility model. Figure 4 This is a schematic diagram of the manual angle adjustment structure of the low beam headlight assembly for passenger vehicles according to this utility model. Figure 5 This is a schematic diagram of the manual adjustment structure for the lower angle of the low beam headlight assembly of a passenger vehicle according to this utility model. Figure 6 This is a schematic diagram of the electric angle adjustment structure for the low beam headlight assembly of a passenger vehicle according to this utility model. Figure 7 This is a schematic diagram of the initial left and right angles of the low beam headlight assembly for a passenger vehicle according to this utility model. Figure 8 This is a schematic diagram of the manual adjustment structure for the right angle of the low beam headlight assembly of a passenger vehicle according to this utility model. Figure 9 This is a schematic diagram of the manual adjustment structure for the left angle of the low beam headlight assembly of a passenger vehicle according to this utility model.

[0014] In the diagram: 1. Bus low beam headlight bracket; 2. Central rotating pivot assembly; 201. Ball head screw; 202. Central ball head connector; 3. Up and down adjusting pivot assembly; 301. Up and down ball head connector; 302. Ball head adjusting screw; 303. Adjusting motor; 304. Motor bracket slider; 305. Up and down adjusting screw; 4. Left and right adjusting pivot assembly; 401. Left and right ball head connector; 402. Ball head slider; 403. Left and right adjusting screw; 5. Lamp housing. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-2 The present invention provides a bus low beam headlight beam angle adjustment structure, including a bus low beam headlight assembly bracket 1, a central rotation fulcrum assembly 2, an up-down adjustment fulcrum assembly 3, a left-right adjustment fulcrum assembly 4, and a lamp housing 5. The bus low beam headlight assembly is fixedly installed on the bus low beam headlight assembly bracket 1. The bus low beam headlight assembly bracket 1 is stably connected to the lamp housing 5 through the central rotation fulcrum assembly 2, the up-down adjustment fulcrum assembly 3, and the left-right adjustment fulcrum assembly 4, thus constructing a fulcrum structure with a free rotation center and two-direction adjustment. The center rotation pivot assembly 2 and the vertical adjustment pivot assembly 3 are connected by a line to form a left-right angle rotation axis for adjusting the horizontal angle of the low beam headlight assembly. The center rotation pivot assembly 2 and the left and right adjustment pivot assembly 4 are connected by a line to form a vertical angle rotation axis for adjusting the vertical angle of the low beam headlight assembly. The initial included angle range between the vertical and horizontal rotation axes is 90±10° to ensure that the displacement of the motor bracket slider is linearly related to the rotation angle of the bus's low beam headlight assembly, thus avoiding adjustment jamming. The central rotating pivot assembly 2 consists of a ball head screw 201 and a central ball head connector 202. The central ball head connector 202 is fixed to the low beam head bracket 1 of the bus. The ball head end of the ball head screw 201 can rotate within the central ball head connector 202, and the other end is connected to the lamp housing 5, providing a rotation center for the low beam head assembly while restricting the degrees of freedom in other directions to ensure stability during adjustment. Up-down adjustment fulcrum assembly 3: Adjusts the vertical angle of the bus low beam headlight assembly with the vertical angle rotation axis as the center. It consists of an upper and lower ball joint connector 301, a ball joint adjustment screw 302, an adjustment motor 303, a motor bracket slider 304, and an up-down adjustment screw 305. The upper and lower ball joint connector 301 is fixed to the bus low beam headlight assembly bracket 1 and is located below the central ball joint connector 202. The ball joint end of the ball joint adjustment screw 302 can rotate within the upper and lower ball joint connector 301, and the threaded section is threadedly connected to the output end of the adjustment motor 303. The adjustment motor 303 is mounted on the motor bracket slider 304, which is slidably connected to the lamp housing 5. One end of the up-down adjustment screw 305 is rotatably connected to the lamp housing 5, and the threaded section is threadedly connected to the motor bracket slider 304. When the upper and lower adjustment fulcrum assembly 3 is electrically adjusted, the adjustment motor 303 drives the threaded section of the ball head adjustment screw 302 to extend and retract axially, which drives the motor bracket slider 304 to slide along the lamp housing 5, so that the ball head end of the ball head adjustment screw 302 deflects in the upper and lower ball head connecting seat 301, thereby realizing the electric adjustment of the upper and lower angles of the bus low beam lamp assembly. When the up and down adjustment fulcrum assembly 3 is manually adjusted, the up and down adjustment screw 305 is rotated, and the slider 304 of the drive motor bracket slides along the lamp housing 5 through the thread, which drives the ball head end of the ball head adjustment screw 302 to deflect in the up and down ball head connecting seat 301, thereby realizing the manual adjustment of the up and down angle of the bus low beam lamp assembly. The vertical adjustment range of the up-down adjustment fulcrum assembly 3 for the low beam headlight assembly of the bus is 3° up and 5° down. Among them, the 3° upper and 3° lower angle adjustment is used to manually correct beam deflection caused by assembly errors before the bus rolls off the production line; The downward 4°-5° angle adjustment is used to electrically correct the upward beam caused by the increased load on the bus body after it leaves the factory; Left and right adjustment pivot assembly 4: Adjusts the left and right angles of the bus low beam headlight assembly in the horizontal direction with the left and right angle rotation axis as the center. It consists of left and right ball joint connectors 401, ball joint sliders 402 and left and right adjustment screws 403. The left and right ball joint connectors 401 are fixed to the bus low beam headlight assembly bracket 1 and are located to the left of the central ball joint connector 202. The ball joint end of the ball joint slider 402 can rotate in the left and right ball joint connectors 401, and the other end is threadedly connected to the left and right adjustment screws 403. The left and right adjustment screws 403 are connected to the lamp housing 5. By manually adjusting the left and right adjustment screws 403, the ball head slider 402 is driven to move along the screw axis, causing the ball head end of the ball head slider 402 to deflect within the left and right ball head connecting seats 401, thereby realizing the horizontal angle adjustment of the low beam head assembly. The left and right adjustment pivot assembly 4 allows for horizontal adjustment of the low beam headlight assembly of the bus from 3° to 3° to the left, and is used to manually correct beam deflection caused by assembly errors before the bus rolls off the production line.

[0017] The beneficial effects of this utility model are as follows: 1. Low cost and adaptable to multiple scenarios: Without the need to integrate high-priced components such as ECUs and radars, it reduces manufacturing costs (suitable for low- and mid-range buses) and covers the beam adjustment needs of buses throughout their entire life cycle through a dual mode of "manually correcting assembly errors and electrically responding to load changes," thus solving the problems of high costs and incomplete scenario coverage. 2. Resolve the adjustment sticking issue and improve stability: By setting the initial included angle of the up / down / left / right rotation axis to 90°±10°, the displacement of the motor bracket slider is linearly related to the rotation angle of the bus low beam headlight assembly, avoiding excessive adjustment resistance or jamming caused by non-linear enhancement, and ensuring smooth adjustment during long-term use. 3. Compact structure, suitable for the small space of buses: Each support component is integrated between the lamp housing and the lamp assembly bracket, eliminating the need for an external motor to occupy engine compartment space. At the same time, the lightweight structure, such as ball joint connection and slider sliding, reduces the overall size, making it suitable for the narrow installation environment inside bus lamps and solving the problem of large space requirements for external motors.

[0018] In summary, the method of using the low beam headlight angle adjustment structure for passenger vehicles provided in this embodiment is as follows: Manual adjustments before the bus rolls off the production line (to correct assembly errors): Vertical angle correction (e.g.) Figures 3-5As shown): If the beam deflects upward, rotate the up-down adjusting screw 305 clockwise, and the drive motor bracket slider 304 slides towards the rear of the vehicle, causing the ball head of the ball head adjusting screw 302 to deflect downward, so that the lamp assembly deflects downward (angle ≤ 3°); if the beam deflects downward, rotate the up-down adjusting screw 305 counterclockwise, so that the lamp assembly deflects upward (angle ≤ 3°).

[0019] Left and right angle correction (e.g.) Figures 7-9 If the beam deflects to the left, turn the left and right adjustment screw 403 clockwise to drive the ball head slider 402 to slide towards the rear of the vehicle, causing the lamp assembly to deflect to the right (angle ≤ 3°); if the beam deflects to the right, turn the left and right adjustment screw 403 counterclockwise to deflect the lamp assembly to the left (angle ≤ 3°).

[0020] Electric adjustment system after the bus leaves the factory (to cope with changes in load): like Figure 6 As shown, when the vehicle's load increases, causing the low beam headlight beam to rise, the driver sends an action signal to the adjustment motor 303 by adjusting the electric adjustment knob in the cab. The adjustment motor 303 drives the threaded section of the ball head adjustment screw 302 to shorten, causing the motor bracket slider 304 to slide towards the rear of the vehicle, so that the ball head end of the ball head adjustment screw 302 deflects downward, and the headlight assembly deflects downward (angle ≤ 2°), ultimately pressing the beam down to a reasonable range (total downward deflection angle reaches 5°).

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for adjusting the beam angle of a passenger vehicle's low beam headlight, characterized in that, The system includes a low beam headlight assembly bracket (1), which is connected to the lamp housing (5) via a central rotating pivot assembly (2), an up-down adjusting pivot assembly (3), and a left-right adjusting pivot assembly (4). The low beam headlight assembly is installed on the low beam headlight assembly bracket (1). The line connecting the rotation fulcrums between the central rotation fulcrum assembly (2) and the upper and lower adjustment fulcrum assembly (3) forms a left-right angle rotation axis; The line connecting the rotation fulcrums between the central rotation fulcrum assembly (2) and the left and right adjustment fulcrum assembly (4) forms an upper and lower angle rotation axis; The initial included angle range between the vertical angle rotation axis and the horizontal angle rotation axis is 90°±10°. The central rotation pivot assembly (2) is used to provide a rotation center for the low beam headlight assembly of the bus and restrict the other degrees of freedom; The up-down adjustment fulcrum assembly (3) adjusts the up-down angle of the bus low beam headlight assembly in the vertical direction with the up-down angle rotation axis as the center. The left and right adjustment pivot assembly (4) adjusts the left and right angles of the bus low beam headlight assembly in the horizontal direction with the left and right angle rotation axis as the center.

2. The bus low beam headlight beam angle adjustment structure according to claim 1, characterized in that: The central pivot assembly (2) includes a ball head screw (201) and a central ball head connector (202). The central ball joint connector (202) is mounted on the low beam headlight bracket (1) of the bus. The ball head end of the ball screw (201) is rotatably mounted in the central ball joint connector (202), and the other end of the ball screw (201) is connected to the lamp housing (5).

3. The bus low beam headlight beam angle adjustment structure according to claim 2, characterized in that: The upper and lower adjustment fulcrum assembly (3) includes an upper and lower ball joint connecting seat (301), a ball joint adjustment screw (302), an adjustment motor (303), a motor support slider (304), and an upper and lower adjustment screw (305). The upper and lower ball joint connectors (301) are located on the bus low beam lamp bracket (1) below the central ball joint connector (202). The ball joint end of the ball joint adjusting screw (302) is rotatably disposed in the upper and lower ball joint connectors (301). The threaded section of the ball joint adjusting screw (302) is threadedly connected to the output end of the adjusting motor (303). The adjusting motor (303) is mounted on the motor bracket slider (304). The motor bracket slider (304) is slidably connected to the lamp housing (5). One end of the upper and lower adjusting screw (305) is rotatably connected to the lamp housing (5). The threaded section of the upper and lower adjusting screw (305) is threadedly connected to the motor bracket slider (304).

4. The bus low beam headlight beam angle adjustment structure according to claim 3, characterized in that: When the upper and lower adjustment fulcrum assembly (3) is electrically adjusted, the adjustment motor (303) drives the threaded section of the ball head adjustment screw (302) to extend and retract axially, thereby driving the motor bracket slider (304) to slide along the lamp housing (5), so that the ball head end of the ball head adjustment screw (302) deflects within the upper and lower ball head connecting seat (301), thereby realizing the electric adjustment of the upper and lower angles of the bus low beam lamp assembly; When the upper and lower adjustment fulcrum assembly (3) is manually adjusted, the upper and lower adjustment screw (305) is rotated, and the motor bracket slider (304) is driven by the thread to slide along the lamp housing (5), which drives the ball head end of the ball head adjustment screw (302) to deflect in the upper and lower ball head connecting seat (301), thereby realizing the manual adjustment of the upper and lower angle of the bus low beam lamp group.

5. The bus low beam headlight beam angle adjustment structure according to claim 2, characterized in that: The left and right adjustment fulcrum assembly (4) includes left and right ball joint connectors (401), ball joint sliders (402), and left and right adjustment screws (403). The left and right ball joint connectors (401) are located on the bus low beam lamp bracket (1) to the left of the center ball joint connector (202). The ball head end of the ball joint slider (402) is rotatably disposed in the left and right ball joint connectors (401). The ball joint slider (402) and the left and right adjusting screws (403) are threadedly connected. The left and right adjusting screws (403) are connected to the lamp housing (5).

6. The bus low beam headlight beam angle adjustment structure according to claim 1, characterized in that: The vertical adjustment fulcrum assembly (3) provides a vertical adjustment angle range of 3° upward and 5° downward for the low beam headlight assembly of the bus. Among them, the 3° upper and 3° lower angle adjustment is used to manually correct beam deflection caused by assembly errors before the bus rolls off the production line; The downward 4°-5° angle adjustment is used to electrically correct the upward beam caused by the increased load on the bus body after it leaves the factory.

7. The bus low beam headlight beam angle adjustment structure according to claim 1, characterized in that: The left and right adjustment fulcrum assembly (4) adjusts the horizontal angle of the bus low beam headlight assembly from 3° to 3° to the left, which is used to manually correct beam deflection caused by assembly errors before the bus is off the production line.

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