Motorcycle headlamp and vehicle

Abstract

The motorcycle headlamp comprises a supporting base, an illumination unit, a driving unit and a lens unit, the illumination unit is used for generating illumination light distribution, one end of the driving unit is fastened to the supporting base, and the illumination unit sequentially comprises a radiator, a PCB, a light source and an optical piece away from the supporting base. The lens unit comprises a lens, a first support and a second support, and the lens is pressed and fixed front and back through the first support and the second support and fixed to the supporting base through screws. The output shaft of the driving unit is in transmission connection with the radiator, and the rotation center of the output shaft of the driving unit coincides with and is coaxial with the central optical axis of the lens, so that the illumination light is distributed in a pivoted mode. According to the scheme, the driving unit is directly connected with the lighting unit, so that the lighting unit rotates, and the torque is smaller; and moreover, energy loss in the transmission process is reduced or eliminated, and additional transmission parts (such as a belt, a chain and a gear) are not needed to transmit power.

Description

Technical Field

[0001] This invention belongs to the field of vehicle lighting technology, specifically relating to a motorcycle headlight and vehicle. Background Technology

[0002] Two-wheeled vehicles (such as motorcycles, electric motorcycles, and electric bicycles) are equipped with headlights at the front. These headlights provide illumination in low-light conditions, allowing drivers to clearly see the road ahead. However, when turning, the headlights turn inward with the vehicle, and the beam distribution also rotates with the headlights. This can create a blind spot on the inside of the turn, especially at night when the road conditions on the inside of the turn are unclear. Additionally, glare can occur on the outside of the turn, potentially causing a hazard.

[0003] like Figure 1 This is a schematic diagram showing the headlights rotating as the vehicle turns. When the vehicle turns by an angle d, the headlight distribution appears to deflect by the same angle d. In the light distribution pattern, the "HV" point is the horizontal line passing through the reference center and the vertical line to the light distribution pattern. It is used to determine the center position and shape of the light distribution. 101 and 102 represent the end line and center line of the road, respectively. The inner side 103 and the outer side 105 of the headlight distribution tilt inward and outward as the vehicle turns, respectively, resulting in a blind spot in the corner area 104. Furthermore, the outer side 105 tilts outward, and its light distribution extends beyond the H horizontal line, which may dazzle oncoming vehicles.

[0004] A domestic patent publication number "CN218506032U" entitled "Lighting Component and Vehicle" discloses a lighting component including a support, a first light source mechanism, and an adjustment mechanism. The first light source mechanism includes a first light source element, a first lens, and a first bracket. The adjustment mechanism includes a controller, a motor, and a tilt detection element. The motor is securely mounted on the support and electrically connected to the controller. The tilt detection element is securely mounted on the first bracket and electrically connected to the controller, and is used to acquire the tilt angle of the first bracket. The first lens is securely mounted on the first bracket, and the first bracket is securely connected to the output shaft of the motor. The first light source element is securely mounted on the support and is used to cooperate with the first lens to form a first illumination beam. The controller controls the motor to rotate according to the tilt angle, so that the first bracket rotates about the motor's axis. When the vehicle tilts, the tilt detection element detects the tilt angle of the first bracket and sends the tilt angle to the controller. The controller obtains the rotation direction and angle of the motor based on the tilt angle, causing the first bracket to rotate by a target angle, and consequently, the first lens also rotates by a target angle, ensuring that the area illuminated by the first illumination beam is the area required for safe driving. Although the motor in this scheme only drives one lens, the lens is at the farthest point from the motor, which means that a larger torque is required. The larger the torque, the greater the driving force required, so it cannot improve the stability of the connection. Summary of the Invention

[0005] In view of the above-mentioned prior art, the purpose of this invention is to provide a motorcycle headlight that aims to solve the following problems: 1. When the rotating part driven by the motor is far from the motor, a larger torque is required, resulting in insufficient motor response sensitivity and insufficient reliability of the connection support. 2. During the cut-off line test, if the fixture is not placed level, the motor will drive it to maintain a horizontal position, which may lead to a crooked cut-off line.

[0006] In a first aspect, this application provides a motorcycle headlight, including a support base, an illumination unit, a drive unit, and a lens unit. The illumination unit is used to generate illumination light distribution. One end of the drive unit is fastened to the support base. The illumination unit, away from the support base, includes a heat sink, a PCB board, a light source, and optical components in sequence. The lens unit includes a lens, a first bracket, and a second bracket. The first bracket and the second bracket press and fix the lens together and fix it to the support base with screws. The output shaft of the drive unit is connected to the heat sink, and the rotation center of the output shaft of the drive unit coincides with the central optical axis X of the lens, thereby pivoting the illumination light distribution.

[0007] Preferably, the support base includes a bottom for fixing one end of the drive unit and a support portion for supporting the first bracket and the second bracket. There are two support portions, which are symmetrical about the central axis of the bottom. The bottom and the two support portions form a receiving cavity for partially enclosing the lighting unit.

[0008] Preferably, both the first support and the second support are hollow cylinders, and the diameter of the first support is smaller than the diameter of the second support.

[0009] The first bracket includes an inwardly facing first flange and a first skirt;

[0010] The second bracket includes an inwardly facing second flange and a second skirt;

[0011] The lens includes a main body and a third flange;

[0012] The first and second flanges are fixed together to the support with screws. The first skirt is used to support the third flange of the lens and cooperates with the second skirt to press and fix the lens.

[0013] Preferably, the optical component is a reflector bowl, and the illumination unit further includes a light pattern baffle for blocking part of the light reflected by the reflector bowl to form an illumination light distribution with a cutoff line.

[0014] Preferably, the light source includes white LEDs and yellow LEDs, and is located at the focal point of the reflector bowl.

[0015] Preferably, the optical component is a small lens, and the illumination unit further includes a light-shielding bracket for refracting the light emitted by the light source.

[0016] Preferably, the cross-section obtained by cutting the lens from a plane perpendicular to the central optical axis X direction is circular.

[0017] Preferably, the motorcycle headlight further includes a gyroscope and a control unit. The gyroscope is mounted on the control unit and is used to detect the tilt angle of the motorcycle headlight and feed the tilt angle back to the control unit. The control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate by the same angle in the opposite direction of the tilt angle.

[0018] Preferably, the motorcycle headlight further includes a base and a lampshade; the lampshade is fastened to the base and together with the base defines a receiving cavity, the receiving cavity being used to accommodate the support base, the lighting unit, the drive unit, and the lens unit.

[0019] Secondly, this application provides a vehicle, including a body and a motorcycle headlight as described in any one of the first aspects, wherein the motorcycle headlight is securely mounted on the body. The vehicle includes two-wheeled vehicles such as motorcycles, electric motorcycles, and electric bicycles.

[0020] Compared with existing technologies, this solution has the following advantages:

[0021] 1. Existing technologies typically involve a motor output shaft driving a large gear via a small gear, introducing additional mechanical transmission links. This transmission method may introduce additional dynamic response delays due to factors such as gear meshing, bearing friction, and the natural frequency of the mechanical system. In contrast, the direct-drive method of the motor to drive the light-shaped baffle eliminates these mechanical transmission links, providing a faster dynamic response. Direct-drive systems generally have higher system rigidity, meaning that the system produces less displacement or rotation for a given input, thus enabling more precise control. High-rigidity systems typically have faster response times because they are more resistant to load changes. In this solution, the drive unit is coaxial with the rotatable lighting unit. This coaxial design reduces or eliminates energy loss during transmission because it eliminates the need for additional transmission components (such as belts, chains, gears, etc.) to transmit power.

[0022] 2. The headlights are fixed to the front of the vehicle. When the vehicle is in motion, the internal components of the headlights often need to withstand vibrations of up to 10G. The further the motor drives the lens, the greater the driving force required, which also results in greater wear and tear on the motor. At the same time, the bracket connecting the outermost lens and the motor is relatively long, and prolonged vibration may cause it to wear down or even break. This solution directly fixes the driving unit to the lighting unit, allowing the lighting unit to rotate with less torque. Attached Figure Description

[0023] The above and other objects, features, and advantages of embodiments of the present invention will become more readily understood from the following detailed description with reference to the accompanying drawings. In the drawings, various embodiments of the invention will be described by way of example and non-limitation, wherein:

[0024] Figure 1 This is a schematic diagram showing the distribution of headlights as the vehicle turns.

[0025] Figure 2 A cross-sectional view of a motorcycle headlight provided by the present invention;

[0026] Figure 3 An exploded view of the motorcycle headlight provided by this invention;

[0027] Figure 4 The present invention provides a target for Figure 3 A magnified diagram of A;

[0028] Figure 5 A cross-sectional view of another embodiment of the present invention;

[0029] Figure 6 An exploded view of another embodiment of the present invention;

[0030] Figure 7 The illumination light distribution provided by this invention;

[0031] Figure 8 This provides another illumination light distribution for the present invention. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] An electric motor, also known as a motor or electric motor, is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. An electric motor typically consists of a stator and a rotor. The stator includes a stator core and coil windings wound around the stator core, while the rotor includes a shaft and a rotor core fitted around the shaft. The outer edge of the rotor core is equipped with permanent magnets.

[0039] like Figure 2As shown, the device includes a support base 1, an illumination unit 2, a drive unit 3, and a lens unit 4. The illumination unit 2 is used to generate illumination light distribution. One end of the drive unit 3 is fastened to the support base 1. The illumination unit 2, away from the support base 1, includes a heat sink 21, a PCB board 22, a light source 23, and an optical component 24 in sequence. The lens unit 4 includes a lens 41, a first bracket 42, and a second bracket 43. The first bracket 42 and the second bracket 43 press and fix the lens 41 back and forth, and fix it to the support base 1 with screws. The output shaft of the drive unit 3 is connected to the heat sink 21 for transmission, and the rotation center of the output shaft of the drive unit 3 coincides with the central optical axis X of the lens 4, thereby pivoting the illumination light distribution. Example

[0040] like Figure 3 As shown, the support base 1 includes a bottom 11 for fixing one end of the drive unit 3 and a support portion 12 for supporting the first bracket 42 and the second bracket 43. There are two support portions 12, symmetrical about the central axis of the bottom 11. The bottom 11 and the two support portions 12 form a receiving cavity for partially enclosing the lighting unit 2. This ensures that the lighting unit 2 does not interfere with the support portion 12 within the receiving cavity. Both the first bracket 42 and the second bracket 43 are hollow cylinders, and the diameter of the first bracket 42 is smaller than the diameter of the second bracket 43. The first bracket 42 includes an inwardly facing first flange 421 and a first skirt 422; the second bracket 43 includes an inwardly facing second flange 431 and a second skirt 432. The lens 41 includes a main body 411 and a third flange 412. The first flange 421 and the second flange 431 are fixed together to the support portion 12 with screws. The first skirt 422 supports the third flange 412 of the lens 41 and cooperates with the second skirt 431 to press and fix the lens. The lens is fixed to the support base by pressing it together using a first bracket and a second bracket. The diameter of the first bracket 42 is smaller than the diameter of the third flange 412 of the lens 41, while the diameter of the second bracket 43 is larger than the diameter of the main body 411 of the lens 41. This design allows the second lens to be pressed down along the outer side of the second bracket during assembly, making assembly more convenient. Furthermore, since the diameter of the main body 411 of the lens 41 is between the diameters of the first and second brackets, a certain gap is maintained between the first and second brackets, preventing interference during vibration and thus avoiding powdering. The optical component 24 is a reflector bowl, and the illumination unit 2 also includes a light pattern baffle 25 to block some of the light reflected by the reflector bowl to form an illumination light distribution with a cutoff line.

[0041] In addition, the lens structure in this embodiment is as follows: a four-part sub-lens obtained by cutting the lens with any two mutually perpendicular planes. All four parts of the lens have the same curvature, meaning the lens is a standard curved circular lens or a spherical lens. This ensures that regardless of which half of the lens is used for the emitted light, the light pattern is the same. This guarantees that, without rotating the lens, the illumination distribution formed by the illumination unit and the lens remains essentially unchanged, the cutoff line will not appear bluish, and the light pattern will not be distorted. However, because the spherical lens requires an additional flange during installation, the cross-section obtained by cutting the lens from a plane perpendicular to the central optical axis X may not be circular. This may result in additional light patterns, but these do not affect the illumination distribution of this application and are all within the scope of protection of this application.

[0042] In this embodiment, a gyroscope and a control unit (not shown in the figure) are also included. The gyroscope is mounted on the control unit and is used to detect the tilt angle of the motorcycle headlight and feed the tilt angle back to the control unit. The control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate by the same angle in the opposite direction of the rotation angle.

[0043] like Figure 4 As shown, the light source includes a white LED 231 and a yellow LED 232, located at the focal point of the reflector bowl. The light source is a dual-color source, with LEDs on the PCB board powered by embedded copper wires on the PCB board. As the light source for vehicle headlights, LEDs need to produce different light patterns and luminous efficacy in different environments to meet regulatory requirements. Yellow lights have strong penetrating power and are more suitable for rainy and foggy weather, but in non-rainy and foggy weather, yellow light is not as clear as white light.

[0044] Therefore, the LEDs on the PCB board are available in both yellow and white colors for different environments. The LEDs are controlled individually via a driver board. Individual control means that the driver board can control all yellow LEDs to be on and the white LEDs off, or vice versa, or both on, and can adjust the current supply to the two colors to create corresponding light patterns and effects.

[0045] like Figure 7 and Figure 8 As shown, Figure 7 This invention relates to a low beam type for motorcycle headlights used in non-rainy or foggy conditions. Figure 8 The present invention relates to a low beam type for motorcycle headlights used in rainy or foggy conditions. Figure 8 The brightness of the resulting light pattern in the middle is not as good as Figure 7 As shown, it has more light on both sides, providing more light penetration in rainy or foggy conditions. Example

[0046] like Figure 5 and Figure 6 As shown, the optical component can be a small lens 26, and the lighting unit 2 also includes a light-shielding bracket 27. The light-shielding bracket 27, in conjunction with the small lens, provides a direct-light solution, making the entire lighting unit smaller in lateral volume and more compact in structure. During assembly, the support base 1 is first fixed to the fixture, and the fixing part 31 of the motor 3 (i.e., the stator of the motor) is fixed to the bottom 11 of the support base 1. The fixing method can be snap-fit ​​or screw-fixed. The output shaft 32 of the motor 3 (i.e., the rotor of the motor) is fixed to the heat sink 21. The heat sink 21 consists of two parts: multiple sets of external heat sinks and internal heat sinks. One part is used for supporting heat dissipation, and the other part is used for heat dissipation. They are evenly distributed. The heat generated by the light source 23 is dissipated through the external and internal heat sinks. The two sets of heat sinks have high heat dissipation efficiency, effectively reducing the internal temperature of the lamp and extending its service life. Then, the PCB board 22 with the light source 23 already attached, along with the small lens 26, is fixed to the heat sink with screws. Next, fix the light-shielding bracket 27 to the PCB board with screws. The light-shielding bracket 27 is used to block some stray light. Then, place the first bracket 42 on the support part 12 of the support base 1, and then place the lens 41 on the first bracket 42. Finally, press down the second bracket 43 and fix the two brackets together on the support part 12 with screws. The assembly is now complete.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motorcycle headlamp comprising a support base (1), a lighting unit (2) for generating a lighting light distribution, a driving unit (3) one end of which is fastened to the support base (1), and a lens unit (4), the lighting unit (2) comprising in order, away from the support base (1), a heat sink (21), a PCB board (22), a light source (23), and an optical piece (24), characterized in that: The lens unit (4) comprises a lens (41), a first support (42) and a second support (43), the first support (42) and the second support (43) press-fit the lens (41) front and back, and are fixed on the support base (1) by screws, the output shaft of the driving unit (3) is in transmission connection with the heat sink (21), and the rotation center of the output shaft of the driving unit (3) coincides with the central optical axis X of the lens (41), so that the pivoting illumination light distribution is realized.

2. Motorcycle headlamp according to claim 1, characterized in that: The support base (1) comprises a bottom (11) for fixing one end of the driving unit (3) and a support part (12) for supporting the first support (42) and the second support (43), the support part (12) is two and is symmetrical about the central axis of the bottom (11), and the bottom (11) and the two support parts (12) form a containing cavity for semi-enclosing the illumination unit (2).

3. Motorcycle headlamp according to claim 2, characterized in that The first support (42) and the second support (43) are both hollow cylinders, and the diameter of the first support (42) is smaller than that of the second support (43). The first support (42) comprises a first inward flange (421) and a first skirt (422); The second support (43) comprises a second inward flange (431) and a second skirt (432); The lens (41) comprises a main body part (411) and a third flange (412); The first flange (421) and the second flange (431) are fixed on the support part (12) by screws, the first skirt (422) is used for supporting the third flange (412) of the lens (41) and cooperates with the second skirt (432) to press-fit the lens.

4. The motorcycle headlamp of claim 1, wherein: The optical part (24) is a reflecting bowl, and the illumination unit (2) further comprises a light type baffle (25) for shielding part of light reflected by the reflecting bowl to form an illumination light distribution with a cutoff line.

5. Motorcycle headlamp according to claim 4, characterized in that: The light source comprises white LEDs (231) and yellow LEDs (232) and is located at the focal point of the reflecting bowl.

6. The motorcycle headlamp of claim 1, wherein: The optical part (24) is a lenslet, and the illumination unit (2) further comprises a light shielding support (26) for refracting light emitted by the light source (23).

7. The motorcycle headlamp of claim 1, wherein The curvature of the four sub-lenses obtained by cutting the lens (41) with any two mutually perpendicular planes is equal.

8. The motorcycle headlamp of claim 1, wherein: The motorcycle headlamp further comprises a gyroscope and a control unit, the gyroscope is arranged on the control unit and is used for detecting the inclination angle of the motorcycle headlamp and feeding back the inclination angle to the control unit, and the control unit is used for receiving the inclination angle fed back by the gyroscope and controlling the driving unit (3) to rotate by the same angle in the direction opposite to the inclination angle.

9. The motorcycle headlamp of claim 1, wherein: The motorcycle headlamp further comprises a bottom shell and a lampshade, the lampshade is in fastening connection with the bottom shell and defines a containing cavity together with the bottom shell, and the containing cavity is used for containing the support base (1), the illumination unit (2), the driving unit (3) and the lens unit (4).

10. A vehicle characterized by: Motorcycle headlamp according to any one of claims 1 to 9, which is fastened to the motorcycle body. Motorcycle headlamp according to any one of claims 1 to 9, which is fastened to the motorcycle body. Motorcycle headlamp according to any one of claims 1 to 9, which is fastened to the motorcycle body. Motorcycle headlamp according to any one of

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