A vehicle headlamp switchable high / low beam lens and a switching driving device thereof

Abstract

The utility model relates to vehicle headlamp technical field, concretely is a kind of vehicle headlamp switchable far near light lens and its switching drive device, wherein the vehicle headlamp switchable far near light lens, including lamp shade, lamp shade is equipped with row lamp, and lamp shade is also installed with light shield, light shield action can change the light characteristic of the light shade generated. The switching drive device of the vehicle headlamp switchable far near light lens, can drive light shield to deflect;Including the drive mechanism in lamp shade, drive mechanism includes positioning assembly and trigger assembly;Positioning assembly includes guide and elastic structure, and elastic structure is installed on light shield, guide is fixedly arranged in first chamber;Trigger assembly is arranged in the second chamber in lamp shade, when trigger assembly operates, cooperate with the abutting member arranged on the pivot of light shield, light shield can be driven to deflect, and in the deflection process of light shield, elastic structure and guide cooperation can drive light shield to reach preset position quickly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle headlight technology, specifically a switchable high / low beam lens for vehicle headlights and its switching drive device. Background Technology

[0002] Most vehicles on the market currently use LED headlights. When adjusting the high and low beams of the headlights, a light-shielding device installed inside the headlight is usually used to partially block the light emitted by the LED lights. The light-shielding device of the LED headlight module is mainly used to adjust the illumination angle and distance of the light source. By blocking unwanted light, the light is allowed to shine in a predetermined direction and range, thereby improving the accuracy and efficiency of lighting.

[0003] Most existing automotive light source shading devices control the light source by installing a shading plate between the light source and the lens. The shading plate is mainly driven by a miniature drive motor to perform the deflection action.

[0004] However, miniature drive motors have an error margin of 3% to 5% during operation, which can easily lead to excessive or insufficient deflection of the sun visor. When the deflection angle is excessive or insufficient, the sun visor's ability to block light will be inaccurate. This will cause the visor to lose its ability to adjust the direction and distance of the light, thus affecting nighttime lighting and driving safety. Utility Model Content

[0005] The purpose of this invention is to provide a switchable high / low beam lens for vehicle headlights and its switching drive device, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A vehicle headlight with switchable high and low beam lenses includes: a lamp cover, a row of lights disposed inside the lamp cover, and a light shield rotatably mounted inside the lamp cover, wherein the light shield can change the light characteristics emitted by the lamp cover when it is moved.

[0007] A switching drive device for a vehicle headlight switchable high / low beam lens is also proposed, which can drive the light shield in the aforementioned vehicle headlight switchable high / low beam lens to deflect. Includes: a drive mechanism disposed within the lampshade, the drive mechanism comprising a positioning component and a triggering component; The positioning component is disposed in a first cavity opened on the lampshade, and includes a guide and an elastic structure. The elastic structure is mounted on the light shield, and the guide is disposed in the first cavity. The triggering component is disposed in the second cavity opened on the lampshade. When the triggering component is activated, it cooperates with the abutment disposed on the rotating shaft of the light shield to drive the light shield to deflect. During the deflection of the light shield, the elastic structure cooperates with the guide to drive the light shield to quickly reach the preset position.

[0008] The switching drive device for the vehicle headlight switchable high / low beam lens as described above: the abutment includes an abutment plate disposed on the rotating shaft of the sunshade.

[0009] The switching drive device for the vehicle headlight switchable high / low beam lens as described above: the elastic structure includes a slide rod disposed on the pivot of the sunshade, a spring slidably disposed on the slide rod, one end of the spring abutting against a baffle disposed on the slide rod, and the other end abutting against an adapting member slidably disposed on the slide rod.

[0010] The switching drive device for the vehicle headlight switchable high / low beam lens as described above: the adapter includes a sliding sleeve sleeved on the slide rod, and a fixing rod is provided on the sliding sleeve.

[0011] The switching drive device for the vehicle headlight switchable high / low beam lens as described above: the guide includes a guide plate disposed in the first cavity, the guide plate including a first inclined surface, a second inclined surface, a first limiting groove and a second limiting groove.

[0012] The switching drive device for the vehicle headlight switchable high / low beam lens as described above: the triggering component includes a turntable rotatably installed in the second chamber, the turntable being provided with a first protrusion and a second protrusion.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By setting up a drive mechanism and utilizing the cooperation between the positioning component and the triggering component, the light shield can be switched quickly. During the switching process, due to the cooperation between the guide and the elastic structure in the positioning component, the light shield can accurately reach the preset state of being perpendicular or parallel to the row of lights after switching, thereby overcoming the driving error inherent in the micro motor and achieving precise switching between high and low beams. Meanwhile, with the cooperation of the elastic structure and guide components, the position of the sun visor after switching can be stably fixed in the preset state, preventing the sun visor from shifting during the movement of the car, thereby improving the accuracy of the light output and helping the driver obtain a stable lighting range, thus improving the driver's safety during nighttime driving. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a vehicle headlight with switchable high / low beam lenses and its switching drive mechanism.

[0015] Figure 2 This is a schematic diagram of the internal structure of the lens housing in a vehicle's switchable high / low beam headlight.

[0016] Figure 3 This is a schematic diagram of the structure inside the first chamber of the lamp cover in the switchable high / low beam lens switching drive device for vehicle headlights.

[0017] Figure 4 This is a schematic diagram of the structure of the second chamber of the lamp cover in the switchable high / low beam lens switching drive device for vehicle headlights.

[0018] Figure 5 This is a schematic diagram of the light-shielding component in a vehicle headlight switchable high / low beam lens switching drive device.

[0019] Figure 6 This is a schematic diagram of the positioning structure in a vehicle headlight switchable high / low beam lens switching drive device.

[0020] In the diagram: 1. Lampshade; 101. First chamber; 102. Second chamber; 2. Lamp array; 3. Light shield; 4. Guide plate; 401. First inclined surface; 402. Second inclined surface; 403. First limiting groove; 404. Second limiting groove; 5. Turntable; 501. First protrusion; 502. Second protrusion; 6. Abutment plate; 7. Sliding rod; 701. Baffle; 702. Sliding groove; 8. Spring; 9. Sliding sleeve; 901. Fixing rod. Detailed Implementation

[0021] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0022] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0023] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0024] Please see Figures 1-6In this embodiment of the present invention, a vehicle headlight switchable high and low beam lens includes: a lamp cover 1, a row of lights 2 is provided inside the lamp cover 1, and a light shield 3 is rotatably installed inside the lamp cover 1. The operation of the light shield 3 can change the light characteristics emitted by the lamp cover 1. For details, please refer to Figure 1 , Figure 2 The aforementioned array of lights 2 is located at the bottom of the lampshade 1. The light shield 3 has two states: parallel or perpendicular to the optical axis of the array of lights 2. When the light shield 3 is in the parallel state, it will not block the light emitted by the array of lights 2. At this time, the light emitted by the array of lights 2 through the lampshade 1 is high beam. When the light shield 3 is in the perpendicular state, it will partially block the light emitted by the array of lights 2. After being blocked by the light shield 3, the light emitted by the lampshade 1 is low beam. By adjusting the light shield 3, the lighting mode can be adjusted according to actual needs.

[0025] A switching drive device for a vehicle headlight switchable high / low beam lens is also proposed, which can drive the light shield 3 in the aforementioned vehicle headlight switchable high / low beam lens to deflect. Includes: a drive mechanism disposed within the lampshade 1, the drive mechanism comprising a positioning component and a triggering component; The positioning component is disposed in the first chamber 101 opened on the lampshade 1, and includes a guide and an elastic structure. The elastic structure is installed on the light shield 3, and the guide is disposed in the first chamber 101. The elastic structure includes a slide rod 7 that is pivotally mounted on the light shield 3, and a spring 8 that is slidably mounted on the slide rod 7. One end of the spring 8 abuts against a baffle 701 mounted on the slide rod 7, and the other end abuts against an adapting part that is slidably mounted on the slide rod 7. The adaptor includes a sliding sleeve 9 sleeved on the slide rod 7, and a fixing rod 901 is provided on the sliding sleeve 9; Specifically, please refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 The aforementioned sliding rod 7 and the light-shielding plate 3 are located on the same plane, and the inner wall of the sliding sleeve 9 has a protrusion. The protrusion is slidably disposed in the sliding groove 702 opened on the sliding rod 7. The sliding groove 702 cooperates with the protrusion, so that the sliding sleeve 9 can only slide along the axial direction of the sliding rod 7.

[0026] Specifically, when the spring 8 is in a compressed state, it pushes the sliding sleeve 9 to move away from the axis of rotation of the light shield 3, so that the fixing rod 901 provided on the sliding sleeve 9 is in contact with the surface of the guide.

[0027] For details, please refer to Figure 3 , Figure 5 The guide includes a guide plate 4 disposed in the first chamber 101. The guide plate 4 includes a first inclined surface 401, a second inclined surface 402, a first limiting groove 403 and a second limiting groove 404, and the first limiting groove 403 and the first inclined surface 401 are symmetrically arranged with respect to the central plane of the guide plate 4 with respect to the second inclined surface 402 and the second limiting groove 404. In the initial state, the fixing rod 901 is engaged with the first limiting groove 403, and the light shield 3 is in a parallel state. At this time, when the row lights 2 are turned on, the light emitted by the lampshade 1 is the high beam. When the light needs to be adjusted, the trigger component drives the light shield 3 to rotate clockwise. During this process, the fixing rod 901 will first separate from the first limiting groove 403, and then slide along the first inclined surface 401. During the sliding process, the compression of the fixing rod 901 by the first inclined surface 401 can force the fixing rod 901 to drive the sliding sleeve 9 to move along the sliding rod 7 toward the axis of rotation of the light shield 3, and further compress the spring 8. When the fixing rod 901 crosses the axis of symmetry between the first inclined surface 401 and the second inclined surface 402... When combined with the second inclined plane 402, the spring 8 can quickly release its elastic potential energy, pushing the fixed rod 901 to slide rapidly along the second inclined plane 402. During this process, the rapidly sliding sleeve 9 can drive the light shield 3 to rotate rapidly clockwise through the sliding rod 7 until the fixed rod 901 is combined with the second limiting groove 404. At this time, the light shield 3 rotates to a vertical state and partially blocks the light emitted by the row lamp 2, thereby realizing the switching of low beam. Under the action of the elastic potential energy stored in the spring 8, the light shield 3 can maintain a vertical state, thereby preventing the light shield 3 from shifting during vehicle operation, thus improving the accuracy of light output and helping the driver obtain a stable lighting range.

[0028] When high beam switching is required, the trigger component drives the light shield 3 to rotate counterclockwise. During this process, the fixing rod 901 first separates from the second limiting groove 404, and then slides along the second inclined surface 402 until the fixing rod 901 separates from the second inclined surface 402 and engages with the first inclined surface 401. At this time, the spring 8 quickly releases its elastic potential energy, pushing the fixing rod 901 to slide along the first inclined surface 401 until the fixing rod 901 engages with the first limiting groove 403. Then, the light shield 3 returns to its initial parallel state, thereby realizing the high beam switching.

[0029] Specifically, please refer to Figure 4 , Figure 5 , Figure 6 The triggering component is disposed in the second chamber 102 opened on the lampshade 1. When the triggering component is activated, it cooperates with the abutment disposed on the rotating shaft of the light shield 3 to drive the light shield 3 to deflect. During the deflection of the light shield 3, the elastic structure cooperates with the guide to drive the light shield 3 to quickly reach the preset position. The abutting component includes an abutting plate 6 disposed on the rotating shaft of the light-shielding plate 3; In particular, please see Figure 5 , Figure 6 The aforementioned abutment plate 6 and the light-shielding plate 3 are on the same plane.

[0030] The triggering component includes a turntable 5 rotatably installed in the second chamber 102. The turntable 5 is provided with a first protrusion 501 and a second protrusion 502, and the included angle between the first protrusion 501 and the second protrusion 502 is 90 degrees. An abutment plate 6 is located between the first protrusion 501 and the second protrusion 502. The rotating shaft of the turntable 5 is coaxially fixed with the output shaft of the micro motor fixedly installed in the second chamber 102. The micro motor is communicatively connected to the vehicle's control center. In the initial state, the first protrusion 501 is in contact with the abutment plate 6. When low beam switching is required, the micro motor is driven by the control center, and then the turntable 5 rotates clockwise. During the rotation, the first protrusion 501 can push the abutment plate 6 to drive the light shield 3 to rotate clockwise. Ideally, the micro motor can drive the turntable 5 to rotate 90 degrees. At this time, with the cooperation of the guide and the elastic structure, when the turntable 5 rotates more than 45 degrees, the light shield 3 will automatically and quickly rotate 90 degrees and remain in a stable state with the cooperation of the guide and the elastic structure. Therefore, even when the micro motor drives the turntable 5 to rotate less than 90 degrees, the light shield 3 can still rotate 90 degrees to make the switching of high and low beams of the lamp cover 1 more accurate, thereby improving the safety of the driver when driving at night. When high beam switching is required, the micro motor is reversed. During the reversal, the second protrusion 502 pushes the abutment plate 6 to rotate, and then with the cooperation of the guide and the elastic structure, the accurate switching of low beams can also be achieved.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] 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. A switchable high / low beam lens for vehicle headlights, characterized in that, include: The lampshade (1) is provided with a row of lights (2) and a light shield (3) is rotatably installed inside the lampshade (1). The light shield (3) can change the light characteristics generated by the lampshade (1) when it moves.

2. A switching drive device for a switchable high / low beam lens for a vehicle headlight, capable of driving the light shield (3) in the switchable high / low beam lens for a vehicle headlight as described in claim 1 to deflect; characterized in that, include: A drive mechanism disposed within the lampshade (1), the drive mechanism comprising a positioning component and a triggering component; The positioning component is disposed in the first chamber (101) opened on the lampshade (1), and includes a guide and an elastic structure. The elastic structure is installed on the light shield (3), and the guide is disposed in the first chamber (101). The triggering component is located in the second chamber (102) opened on the lampshade (1). When the triggering component is activated, it cooperates with the abutment on the rotating shaft of the light shield (3) to drive the light shield (3) to deflect. During the deflection of the light shield (3), the elastic structure cooperates with the guide to drive the light shield (3) to quickly reach the preset position.

3. The switching drive device for a vehicle headlight with switchable high / low beam lenses according to claim 2, characterized in that, The abutting component includes an abutting plate (6) disposed on the rotating shaft of the light shield (3).

4. The switching drive device for a vehicle headlight with switchable high / low beam lenses according to claim 2, characterized in that, The elastic structure includes a slide rod (7) that is mounted on the pivot of the light shield (3), and a spring (8) that is slidably mounted on the slide rod (7). One end of the spring (8) abuts against a baffle (701) mounted on the slide rod (7), and the other end abuts against an adapting part that is slidably mounted on the slide rod (7).

5. A switching drive device for a vehicle headlight with switchable high / low beam lenses according to claim 4, characterized in that, The adaptor includes a sliding sleeve (9) sleeved on the slide rod (7), and a fixing rod (901) is provided on the sliding sleeve (9).

6. A switching drive device for a vehicle headlight with switchable high / low beam lenses according to claim 2, characterized in that, The guide includes a guide plate (4) disposed in the first chamber (101), the guide plate (4) including a first inclined surface (401), a second inclined surface (402), a first limiting groove (403) and a second limiting groove (404).

7. A switching drive device for a vehicle headlight with switchable high / low beam lenses according to claim 2, characterized in that, The triggering component includes a turntable (5) rotatably installed in the second chamber (102), and the turntable (5) is provided with a first protrusion (501) and a second protrusion (502).

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