Motorcycle headlamp and vehicle

Abstract

A 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] The invention belongs to the technical field of vehicle lamps, and in particular relates to a motorcycle headlamp and a vehicle. Background Art

[0002] Two-wheeled vehicles (such as motorcycles, electric motorcycles, electric cars, etc.) are equipped with headlights at the front of the vehicle, which can provide lighting in poor light conditions, thereby providing the driver with a clear view of the road ahead. However, when turning, the headlights will turn to the inside of the turn with the vehicle, and when turning, the lighting distribution of the headlights will also rotate with the headlights, which will cause a blind spot in the front of the inside, especially at night when the road conditions in front of the inside of the turn are not clear, and there will be glare on the outside of the turn, which may cause danger.

[0003] like Figure 1 It is a schematic diagram of the lighting distribution rotating with the headlights when turning. When the vehicle turns at an angle of d, the visual lighting distribution also deflects at an angle of d. In the lighting distribution pattern, the "HV" point is the vertical line from the horizontal line passing through the reference center to the lighting distribution pattern, which is used to determine the center position of the lighting distribution and the shape of the light pattern. 101 and 102 represent the end line and center line of the road respectively. The inner side 103 of the lighting distribution and the outer side 105 of the lighting distribution tilt inward and outward respectively with the turn, resulting in a lightless blind spot in the corner area 104. The outer side 105 of the lighting distribution tilts outward, and its light distribution exceeds the upper side of the H horizontal line, which may cause dazzle to oncoming vehicles.

[0004] The utility model patent with the domestic patent announcement number "CN218506032U" and the patent name "Lighting assembly and vehicle" discloses a lighting assembly, including a support, a first light source mechanism and an adjustment mechanism; the first light source mechanism includes a first light source, a first lens and a first bracket; the adjustment mechanism includes a controller, a motor and a tilt detection member; the motor is fastened to the support and electrically connected to the controller; the tilt detection member is fastened to the first bracket and electrically connected to the controller, and is used to collect the tilt angle of the first bracket; the first lens is fastened to the first bracket, and the first bracket is fastened to the output shaft of the motor; the first light source member is fastened to the support and is used to cooperate with the first lens to form a first lighting beam; the controller is used to control the rotation of the motor according to the tilt angle, so that the first bracket rotates with the axis of the motor as the rotation axis. When the vehicle tilts, the tilt detection member will detect the tilt angle of the first bracket and send the tilt angle to the controller. The controller obtains the rotation direction and rotation angle of the motor according to the tilt angle, so that the first bracket rotates to the target angle, and then the first lens also rotates to the target angle, ensuring that the area irradiated by the first lighting beam is the irradiation area required for safe driving. Although the motor of this solution only drives one lens, the lens is at the farthest distance from the motor, which means that a larger torque is required. The greater the torque, the greater the driving force required, so the stability of the connection cannot be improved. Summary of the invention

[0005] In view of the above-mentioned prior art, the present invention aims to provide a motorcycle headlamp, aiming to solve the following problems: 1. When the rotating part driven by the motor is far away 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 tooling is not placed flat, the motor will drive to maintain horizontality, which may lead to a crooked cut-off line.

[0006] In the first aspect, the present application provides a motorcycle headlamp, comprising a supporting base, a lighting unit, a driving unit and a lens unit, wherein the lighting unit is used to generate a lighting light distribution, one end of the driving unit is fastened to the supporting base, and the lighting unit is away from the supporting base and comprises a heat sink, a PCB board, a light source, and an optical component in sequence, characterized in that: the lens unit comprises a lens, a first bracket and a second bracket, the first bracket and the second bracket press and fix the lens front and back, and are fixed to the supporting base by screws, the output shaft of the driving unit is transmission-connected to the radiator, and the rotation center of the output shaft of the driving unit coincides with the central optical axis X of the lens, thereby pivoting the lighting light distribution.

[0007] Preferably, the supporting base includes a bottom for fixing one end of the driving unit and a supporting portion for supporting the first bracket and the second bracket, the supporting portions are two and symmetrical about the central axis of the bottom, and the bottom and the two supporting portions form a accommodating cavity for semi-wrapping the lighting unit.

[0008] Preferably, the first bracket and the second bracket are both hollow cylinders, and the diameter of the first bracket is smaller than the diameter of the second bracket; The first bracket includes a first inwardly facing flange and a first skirt; The second bracket includes a second inwardly facing flange and a second skirt; The lens comprises a main body portion and a third flange; The first flange and the second flange are fixed to the support portion together by screws. The first skirt is used to support the third flange of the lens and cooperate with the second skirt to press and fix the lens.

[0009] Preferably, the optical component is a reflective bowl, and the lighting unit further comprises a light-shaped baffle for shielding part of the light reflected by the reflective bowl to form an illumination light distribution with a cut-off line.

[0010] Preferably, the light source comprises a white LED and a yellow LED, and is located at the focus of the reflective bowl.

[0011] Preferably, the optical component is a small lens, and the lighting unit further comprises a light-shielding bracket for refracting the light emitted by the light source.

[0012] Preferably, the cross sections of the lens obtained by cutting the lens from a plane perpendicular to the central optical axis X direction are all circular.

[0013] Preferably, the motorcycle headlight also includes a gyroscope and a control unit, wherein the gyroscope is arranged on the control unit for detecting the tilt angle of the motorcycle headlight and feeding back the tilt angle to the control unit, and the control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate the same angle in the opposite direction of the rotation angle.

[0014] Preferably, the motorcycle headlamp further comprises a bottom shell and a lampshade; the lampshade is fastened to the bottom shell and defines a containing cavity together with the bottom shell, and the containing cavity is used to contain the supporting base, the lighting unit, the driving unit and the lens unit.

[0015] In a second aspect, the present application provides a vehicle, comprising a vehicle body and a motorcycle headlamp as described in any one of the first aspects, wherein the motorcycle headlamp is fastened to the vehicle body. The vehicle includes a two-wheeled vehicle such as a motorcycle, an electric motorcycle, an electric bicycle, etc. Compared with the prior art, this solution has the following beneficial effects: 1. The prior art generally uses a system in which the motor output shaft drives a large gear through a small gear, which introduces an additional mechanical transmission link. 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 method in which the motor directly drives the light-type baffle can provide faster dynamic response because these mechanical transmission links are omitted. Direct-drive systems generally have higher system rigidity, which means that under a given input, the system produces less displacement or rotation, allowing for more precise control. High-rigidity systems generally have faster response speeds because they are more resistant to load changes. The drive unit of this solution is coaxial with the rotatable lighting unit. The coaxial design can reduce or eliminate energy losses in the transmission process because power does not need to be transmitted through additional transmission components (such as belts, chains, gears, etc.).

[0016] 2. The headlight is fixed at the front end of the vehicle. When the vehicle is driving, the internal structural parts of the headlight often need to withstand 10G vibration. The farther the motor drives the lens, the greater the driving force needs to be, which also causes greater losses to the motor. At the same time, the bracket connecting the outermost lens and the motor is also relatively long, which may cause grinding or even breakage under long-term vibration. The driving unit of this solution directly fixes the lighting unit, allowing the lighting unit to rotate with less torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the embodiments of the present invention will become more easily understood through the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention will be described by way of example and not limitation, wherein: Figure 1 It is a schematic diagram of the lighting distribution as the headlights rotate when the vehicle turns; Figure 2 A cross-sectional view of a motorcycle headlamp provided by the present invention; Figure 3 An exploded view of a motorcycle headlamp provided by the present invention; Figure 4 The present invention provides Figure 3 A magnified schematic diagram; Figure 5 A cross-sectional view of another embodiment provided by the present invention; Figure 6 An exploded view of another embodiment provided by the present invention; Figure 7 The illumination light distribution provided by the present invention; Figure 8 Another illumination light distribution provided by the present invention. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0024] A motor, also known as an electric motor, is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. A motor usually includes a stator and a rotor. The stator includes a stator core and a coil winding wound on the stator core. The rotor includes a rotating shaft and a rotor core sleeved on the rotating shaft. A permanent magnet is provided on the outer edge of the rotor core. Example

[0025] like Figure 3As shown, the support base 1 includes a bottom 11 for fixing one end of the driving unit 3 and a support portion 12 for supporting the first bracket 42 and the second bracket 43. The support portions 12 are two and symmetrical about the central axis of the bottom 11. The bottom 11 and the two support portions 12 form a receiving cavity for half-wrapping the lighting unit 2. The lighting unit 2 does not interfere with the support portion 12 in the receiving cavity. The first bracket 42 and the second bracket 43 are both 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 inward first flange 421 and a first skirt 422; the second bracket 43 includes an inward 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 to the support portion 12 together with screws, and the first skirt 422 is used to support the third flange 412 of the lens 41, and cooperate with the second skirt 431 to press and fix the lens. The lens is pressed and fixed on the support base by using the first bracket and the second bracket. The diameter of the first bracket 42 is smaller than the diameter of the third flange 412 of the lens 41, and the diameter of the second bracket 43 is larger than the diameter of the main part 411 of the lens 41. The advantage of this design is that the second lens can be pressed along the outer side of the second bracket during assembly, which makes assembly more convenient. Since the diameter of the main part 411 of the lens 41 is between the diameters of the first bracket and the second bracket, the first bracket and the second bracket can have a certain gap, and will not interfere with each other during vibration to cause grinding. The optical part 24 is a reflective bowl, and the lighting unit 2 also includes a light-shaped baffle 25, which is used to block part of the light reflected by the reflective bowl to form an illumination light distribution with a cutoff line.

[0026] In addition, the structure of the lens in this embodiment is: a four-part lens obtained by cutting the lens with any two mutually perpendicular surfaces, and the curvatures of these four parts of the lens are consistent, that is, the lens is a standard curved circular lens or a spherical center lens. In this way, no matter which half of the lens is used for the outgoing light, the light pattern is the same, so that it can be ensured that the lighting light distribution formed by the lighting unit and the lens does not change basically without rotating the lens, the cutoff line will not be blue, and the light pattern will not be distorted. However, since the spherical center lens needs to add a flange during installation, it may cause the cross-section obtained by cutting the lens from a surface perpendicular to the center optical axis X direction to not necessarily be circular. And additional light patterns will be generated, but they do not affect the lighting light distribution of this application, and they all belong to the protection scope of this application.

[0027] In this embodiment, a gyroscope and a control unit (not shown in the figure) are also included. The gyroscope is arranged on the control unit, and is used to detect the inclination angle of the motorcycle headlight and feed back the inclination angle to the control unit. The control unit is used to receive the inclination angle fed back by the gyroscope and control the drive unit to rotate the same angle in the opposite direction of the rotation angle.

[0028] like Figure 4 As shown, the light source includes a white LED 231 and a yellow LED 232, and is located at the focus of the reflective bowl. The light source is a two-color light source, and the PCB board has an LED lamp, and the buried copper on the PCB board is used as a conductor to power the LED lamp. As the light source of the car lamp, the LED lamp needs to produce different light types and light effects in different environments to meet regulatory requirements. Among them, the yellow light has strong penetrating power and is more suitable for rainy and foggy days, but on non-rainy and foggy days, the yellow light is not as clear as the white light.

[0029] Therefore, the lamp beads on the PCB board have two colors, yellow and white, for use in different environments. The LED lights are controlled by the driver board and can be controlled individually. Among them, individual control means that the driver board can control all yellow lights to be on and white lights to be off, or yellow lights to be off and white lights to be on, or both to be on, and the current supply amount of the two colors of lights can be adjusted to mix and produce corresponding light patterns and light effects.

[0030] like Figure 7 and Figure 8 As shown, Figure 7 The low beam light pattern formed by the motorcycle headlamp of the present invention in a non-rainy and foggy day, Figure 8 The low beam light pattern formed by the motorcycle headlamp of the present invention in rainy and foggy weather. Figure 8 The light pattern formed is not as bright in the middle as Figure 7 As shown, but with more light on the sides, it provides more light penetration in rainy and foggy days.

[0031] Example 2

[0032] like Figure 5 and Figure 6As shown, the optical part can be a small lens 26, and the lighting unit 2 also includes a shading bracket 27. The shading bracket 27 cooperates with the small lens as a direct-illumination solution, which can make the entire lighting unit smaller in the horizontal direction and more compact in structure. During assembly, the support base 1 is first fixed on the tooling, and the fixing part 31 of the motor 3 (i.e., the stator of the motor) is fixed on the bottom 11 of the support base 1. The fixing method can be snap-on fixing or screw fixing. The output shaft 32 of the motor 3 (i.e., the rotor of the motor) is fixed to the radiator 21. The radiator 21 here includes two parts, which are divided into multiple groups of external radiators and internal radiators, one part is used to support the heat dissipation effect, and the other part is used for heat dissipation. And they are equidistantly distributed, and the heat generated by the light source 23 is dissipated by the external radiators and the internal radiators. The heat dissipation efficiency of the two groups of radiators is strong, which effectively reduces the internal temperature of the lamp and prolongs the service life. Then the PCB board 22 with the light source 23 attached is fixed to the radiator with screws in combination with the small lens 26. Then fix the light shielding bracket 27 on 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 the second bracket 43 down, and fix the two brackets together on the support part 12 with screws. At this point, the assembly is completed.

[0033] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present invention.

Claims

1. A motorcycle headlamp, comprising a support base (1), a lighting unit (2), a driving unit (3) and a lens unit (4), wherein the lighting unit (2) is used to generate lighting light distribution, one end of the driving unit (3) is fastened to the support base (1), and the lighting unit (2) is remote from the support base (1) and comprises a heat sink (21), a PCB board (22), a light source (23), and an optical component (24) in sequence, characterized in that: The lens unit (4) comprises a lens (41), a first bracket (42) and a second bracket (43); the lens (41) is a spherical lens; the first bracket (42) and the second bracket (43) press the lens (41) front and back and fix them, and are fixed to a support base (1) by screws; the output shaft of the drive unit (3) is transmission-connected to the heat sink (21), 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.

2. The 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 portion (12) for supporting the first bracket (42) and the second bracket (43); the support portions (12) are two and symmetrical about the central axis of the bottom (11); the bottom (11) and the two support portions (12) form a receiving cavity for semi-enclosing the lighting unit (2).

3. The motorcycle headlamp according to claim 2, characterized in that: The first bracket (42) and the second bracket (43) are both hollow cylinders, and the diameter of the first bracket (42) is smaller than the diameter of the second bracket (43); The first bracket (42) comprises a first inwardly facing flange (421) and a first skirt (422); The second bracket (43) comprises an inwardly facing second flange (431) and a second skirt (432); The lens (41) comprises a main body portion (411) and a third flange (412); The first flange (421) and the second flange (431) are fixed together on the support portion (12) by means of screws; the first skirt (422) is used to support the third flange (412) of the lens (41) and cooperate with the second skirt (431) to press and fix the lens.

4. The motorcycle headlamp according to claim 1, characterized in that: The optical component (24) is a reflective bowl, and the lighting unit (2) further comprises a light-shaped baffle (25) for shielding part of the light reflected by the reflective bowl to form an illumination light distribution with a cut-off line.

5. The motorcycle headlamp according to claim 4, characterized in that: The light source comprises a white LED (231) and a yellow LED (232), and is located at the focus of the reflective bowl.

6. The motorcycle headlamp according to claim 1, characterized in that: The optical component (24) is a small lens, and the lighting unit (2) further comprises a light shielding bracket (26) for refracting the light emitted by the light source (23).

7. The motorcycle headlamp according to claim 1, characterized in that: The curvatures of the four sub-lenses obtained by cutting the lens (41) with any two mutually perpendicular surfaces are equal.

8. The motorcycle headlamp according to claim 1, characterized in that: The motorcycle headlamp further comprises a gyroscope and a control unit, wherein the gyroscope is arranged on the control unit and is used to detect the tilt angle of the motorcycle headlamp and feed back the tilt angle to the control unit, and the control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit (2) to rotate by the same angle in the opposite direction of the rotation angle.

9. The motorcycle headlamp according to claim 1, characterized in that: The motorcycle headlamp further comprises a bottom shell and a lampshade; the lampshade is firmly connected to the bottom shell and defines a receiving cavity together with the bottom shell, wherein the receiving cavity is used to receive the support base (1), the lighting unit (2), the driving unit (3) and the lens unit (4).

10. A vehicle, characterized in that: It comprises a vehicle body and a motorcycle headlamp as claimed in any one of claims 1 to 9, wherein the motorcycle headlamp is fastened to the vehicle body.

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