CN102923046B - Automobile headlamp adjusting device with spherical pair structure - Google Patents

Abstract

The invention relates to an automobile headlight adjusting device with a spherical sub-structure, comprising a support frame arranged in a projection type headlight lamp shade, the support frame is hinged with an outer spherical shell through left and right support plates, and the outer spherical shell Covered with an inner spherical shell to form a spherical pair, the front side of the inner spherical shell is provided with a projection type headlight lamp body, and the rear side of the outer spherical shell is provided with a motor rotation mechanism to drive the inner spherical shell to rotate horizontally and to drive the outer The motor transmission mechanism for pitching and swinging the spherical shell, the motor rotating mechanism is a rack and pinion mechanism driven by a motor, and the outer spherical shell drives the inner spherical shell to pitch and swing synchronously when pitching and swinging. The present invention can not only provide active lighting for the vehicle when turning, adapt to different postures of the vehicle body, automatically adjust the left and right deflection angles of the headlight beams, and the pitching and swing angles, which can well meet the needs of actual road conditions, thereby improving the performance of different road conditions and nighttime lighting. Driving safety, reduce the fatigue of the driver driving the car, and enhance driving safety and comfort.

Description

Adjusting device for automobile headlights with spherical substructure

technical field

The invention relates to an automobile headlamp adjusting device with a spherical substructure. the

Background technique

As one of the most advanced automotive lighting systems in the world today, the Adaptive Front Lighting System (AFS) is mainly composed of three parts: projection headlights, headlight adjustment devices and control systems. The problem of poor vision, especially when driving in S-shaped curves, the effect is more obvious. The light control system of the adaptive front lighting system will predict the road conditions ahead to provide lighting patterns in different modes such as turning, intersections, expressways, urban roads, rainy days, etc., combined with the sensors equipped on the vehicle itself, the intelligent dimming system of AFS It can automatically adjust the distance of the light beam, the width of the irradiation area and even the intensity of the brightness, reduce the possibility of the dazzling effect of the vehicle when passing cars, and expand the irradiation area, thereby greatly improving the active safety of the car. the

The publication date is April 1, 2009, and the Chinese invention patent application document with the application number CN 101396985A discloses a rotary actuator for an automobile headlight dimming system. This device can only realize the horizontal rotation of the headlight and cannot Realize its pitch swing, and the control accuracy of horizontal rotation is very low, through multi-stage transmission, errors are easy to accumulate, and the deviation of the final result will be very large. Moreover, as an active safety device, if the effect cannot be precisely controlled, it may become an unsafe factor and easily cause traffic accidents. the

The publication date is May 26, 2010, and the publication number is CN 101713513A. The Chinese invention patent application document discloses a kind of adaptive headlight for automobiles, which can only realize the horizontal rotation of the headlight, but cannot realize its pitching and swinging. The entire auxiliary light is fixed by a rotating shaft, and the support is not stable enough. It controls the projection direction of the light beam by controlling the reflector, which will keep the reflector in motion, which will undoubtedly cause certain damage to the reflector. The stability of the control process is poor, and as an active safety device, the low stability will become an unsafe factor and easily cause traffic accidents. the

The patent publication date is December 19, 2006, and the U.S. patent application document with the publication number US 7150547 B2 discloses "Turn Signal And Steering Responsive Adjustable Lighting Apparatus For Vehicle", which cannot achieve precise control of the left and right rotation mechanism; The light adjustment device and the projection headlight are only fixed on one axis, the contact area between them is small, and the stability of the control process is poor. When the vehicle is driving on a bumpy road, the AFS system is prone to vibration, making the front light The control accuracy of lamp swing angle is poor. the

Contents of the invention

The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide a spherical sub-structure automotive headlight adjustment device capable of horizontal rotation, pitch swing and precise movement, which is beneficial to the vehicle according to the driving Road conditions automatically, accurately and stably adjust the left and right deflection angles and pitch angles of the headlight beam, thereby improving the safety of driving in different road conditions and at night, and reducing the fatigue of the driver driving the car. the

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a spherical sub-structure automotive headlight adjustment device, including a support frame arranged in the projection type headlight lamp shade, and the support frame is hinged through the left and right support plates There is an outer spherical shell, the outer spherical shell is covered with an inner spherical shell to form a spherical pair, the front side of the inner spherical shell is provided with a projection type headlight lamp body, and the rear side of the outer spherical shell is provided with a driving inner ball The motor rotation mechanism for the horizontal rotation of the shell and the motor transmission mechanism for driving the pitch swing of the outer spherical shell. The motor rotation mechanism is a rack and pinion mechanism driven by a motor. When the outer spherical shell pitches and swings, it drives the inner spherical shell to pitch and swing synchronously. the

Further, the motor rotation mechanism includes a horizontally rotating stepping motor, a gear arranged on the output shaft of the motor, and a sector-shaped rack matched with the gear. The sector-shaped rack is installed on the rear side of the inner spherical shell, and the outer spherical shell The rear side is provided with a through slot exposing the fan-shaped rack. the

Further, the width of the through slot is equal to that of the sector rack, and the length of the through slot is greater than the arc length of the sector rack and adapted to the horizontal rotation angle of the inner spherical shell. the

Further, the motor transmission mechanism includes a linear stepping motor, a ball push rod driven by the linear stepping motor, and a ball seat socket matched with the ball push rod, and the ball seat socket is arranged on the rear side of the outer spherical shell upper or lower. the

Further, the outer spherical shell is formed by screwing, fastening or welding the upper half shell and the lower half shell. the

Compared with the prior art, the present invention has the following remarkable effects: (1) The spherical sub-structure is adopted, the structural support method is stable, the contact area of the inner and outer spherical shells is large, the number of parts is reduced, and the headlight itself is lightened. The weight of the control process is good, and the active safety is high; (2) Using the rack and pinion structure, the precise execution of the sensor signal can be realized, so that the horizontal deflection angle can be accurately controlled; (3) Not only can the vehicle turn Active lighting, adapting to different postures of the vehicle body, automatically adjusting the left and right deflection angles of the headlight beams, and the pitching and swing angles, can well meet the needs of actual road conditions, thereby improving the safety of driving in different road conditions and at night, and reducing the risk of driving. Car fatigue, enhance driving safety and comfort. the

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. the

Description of drawings

Fig. 1 is an axonometric schematic diagram 1 of an embodiment of the present invention. the

Fig. 2 is the second isometric schematic diagram of the embodiment of the present invention. the

Fig. 3 is a third schematic diagram of an axonometric view of an embodiment of the present invention. the

Fig. 4 is the explosion schematic diagram of the embodiment of the present invention. the

Figure 5 is a schematic diagram of the structure of the motor rotation mechanism. the

Fig. 6 is a partial sectional view of the spherical structure of the present invention. the

Figure 7 is a schematic diagram of the structure of the motor transmission mechanism. the

In the figure: 00-right support plate, 01-left support plate, 02-lamp body, 03-lower half shell, 04-inner spherical shell, 05-horizontal rotation stepping motor, 06-gear, 07-segment rack, 08-connection hole, 09-support frame, 10, 12-nut, 11-linear stepper motor, 13-ball push rod, 14-ball seat socket, 15-upper half shell, 16-screw, 17-bearing, 18, 19, 20 - set of screws. the

Detailed ways

As shown in Figures 1 to 7, an automobile headlight adjustment device with a spherical substructure includes a support frame 09 arranged in a projection-type headlight lampshade. One is installed on each side, and the left and right sides of the lower part of the support frame 09 are respectively provided with a connection hole 08 for connecting the vehicle body, and the support frame 09 is connected with the projection type headlight lamp cover through the bolts passing through the connection hole 08; The support frame 09 is hinged with an outer spherical shell through the left support plate 01 and the right support plate 00, and the outer spherical shell is covered with an inner spherical shell 04 to form a spherical pair, and the front side of the inner spherical shell 04 is installed through a bolt group 18 There is a projection type headlamp lamp body 02, and the rear side of the outer spherical shell is provided with a motor rotation mechanism for driving the inner spherical casing 04 to rotate horizontally and a motor transmission mechanism for driving the outer spherical casing to pitch and swing. Driven rack and pinion mechanism, when the outer spherical shell pitches and swings, it drives the inner spherical shell 04 to pitch and swing synchronously. the

In this embodiment, the left support plate 01 and the right support plate 00 are respectively fixed on the support frame 09 through nuts and are parallel to each other. The same coaxial holes are respectively opened on the upper side, and the left and right sides of the outer spherical shell respectively extend out the pin shafts matched with the coaxial holes through the bearing 17, so as to ensure that the outer spherical shell can freely pitch and swing, and the axis of the coaxial hole It is the axis for pitching and swinging of the projection headlamp lamp body 02, and the straight line passing through the upper spherical shell and the center of the spherical shell and perpendicular to the plane where the sector rack 07 index circle is used as the projection type headlamp lamp body 02 for horizontal rotation The axis, so that the horizontal rotation and pitch swing functions of the car headlights are well realized. The outer spherical shell is formed by connecting the upper half shell 15 and the lower half shell 03 through screws 16 or bolts, so the pin shaft is a half cylinder extending from the upper half shell 15 and a half cylinder extending from the lower half shell 03 body; of course, the structure of the outer spherical shell can also be composed of a left half shell and a right half shell, and the connection method is not limited to screw connection, but can also be welding or snap-fit. the

In this embodiment, the motor rotation mechanism includes a horizontally rotating stepper motor 05, a gear 06 arranged on the output shaft of the motor, and a sector rack 07 matched with the gear 06. The horizontally rotating stepper motor 05 is installed on the lower half The slot on the rear side of the shell 03 is fixed with a screw group 19. The sector rack 07 is installed on the rear side of the inner spherical shell 04 through a screw group 20. The contact surface between the sector rack 07 and the inner spherical shell 04 is a spherical surface, so The rear side of the outer spherical shell is provided with a through groove at the junction of the upper half shell 15 and the lower half shell 03 to reveal the sector rack 07, and the cooperation between the through groove and the sector rack 07 limits the inner spherical shell 04 and the outer shell 04. Rotational degrees of freedom between spherical shells. The width of the through slot is equal to that of the sector rack 07, the length of the through slot is greater than the arc length of the sector rack 07 and is compatible with the horizontal rotation angle of the inner spherical shell 04, the plane where the index circle of the sector rack 07 is located and the horizontal plane parallel, so that the inner spherical shell 04 and the outer spherical shell form an integral body when they pitch and swing. the

In this embodiment, the motor transmission mechanism includes a linear stepping motor 11, a ball push rod 13 driven by the linear stepping motor 11, and a ball seat socket 14 matched with the ball push rod 13. The output shaft of the feeder motor 11 is designed as a cylindrical chamfered shape (enlarged view in Figure 7), so that it is stuck in the shaft hole of the support frame 09, limiting its multiple degrees of freedom, and then fixed by the nut 12, so that the The linear stepper motor 11 is installed on the support frame 09; the ball head push rod 13 is added on the output shaft of the linear stepper motor 11 through the nut 10, and one end thereof is designed into a ball head shape, and the ball seat socket 14 is provided with On the upper rear side of the outer spherical shell, the ball head-shaped rod end forms a high pair with the ball seat socket 14; of course, the ball seat socket 14 can also be arranged on the lower rear side of the outer spherical shell. the

In this embodiment, the adjusting device for automobile headlights with a spherical substructure is connected to the vehicle body through the connection hole 08 and the bolt at the bottom of the support frame 09. The vehicle body is provided with a steering wheel angle sensor, and the signal of the steering wheel angle sensor is The motor rotation mechanism is controlled by an intelligent controller; the car body is provided with a vehicle body height sensor and a speed sensor, and the sensor signals are controlled by the intelligent controller to control the operation of the motor transmission mechanism. the

Pitch steering adjustment: When the posture of the vehicle body changes, the angle between the beam of the headlight and the ground changes. The vehicle height sensor installed on the vehicle body detects the change value of the vehicle body height and transmits it to the controller. The controller calculates the projection The projection type headlamp lamp body 02 pitches and turns, and generates corresponding signals to control the output shaft of the linear stepper motor 11 to extend or shrink, so that the support mechanism drives the projection type headlamp lamp body 02 to rotate around the pitch swing axis. the

Left and right steering adjustment: When the vehicle is turning, each sensor gets signals such as steering angle, turning radius, vehicle speed, etc., and these information are transmitted to the controller, which calculates the angle of left and right steering of the projection headlamp lamp body 02, and generates The corresponding signal controls the rotation of the horizontal rotation stepper motor 05, which drives the fan-shaped rack 07 to rotate, thereby driving the projection type headlamp lamp body 02 to rotate around the horizontal rotation axis. the

With the structure of the present invention, when the motion state of the vehicle changes, such as when turning, accelerating and decelerating, going up and down slopes, driving at high and low speeds, and when there are passengers in the rear seat, the lighting effects of the headlights will change accordingly. Utilizing the structure of the present invention to realize that during the dynamic motion of the vehicle, the adaptive headlight system can automatically, accurately and stably adjust the irradiation angle of the projection headlight according to different motion states, so that it can maintain a certain angle in the pitch direction. range of exposure. When the vehicle turns, according to the signals sent to the controller by the vehicle speed sensor, the steering wheel angle sensor and other sensors, the controller calculates the left and right steering angles of the projection headlights, and drives the mechanism of the present invention to realize the steering, thereby providing the turning angle of the vehicle. Clear and bright road lighting environment improves active driving safety. the

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention. the

Claims (6)

1. a spherical pair structure automobile headlight regulating device, comprise the bracing frame being arranged in projector headlight lampshade, it is characterized in that: support frame as described above is through a left side, right support plate is hinged with an outer spherical shell, described outer spherical shell is coated with an interior spherical shell to form spherical pair, described interior spherical shell front side is provided with projector headlight lamp body, the motor rotating mechanism that in described outer spherical shell rear side is provided with and drives, spherical shell horizontally rotates and the motor transmission mechanism that drives outer spherical shell pitching, described motor rotating mechanism is by motor-driven pinion and rack, the synchronous pitching of spherical shell in driving during described outer spherical shell pitching.

2. spherical pair structure automobile headlight regulating device according to claim 1, it is characterized in that: described motor rotating mechanism comprises the gear that horizontally rotates stepping motor, is arranged at motor output shaft and the sector rack matching with gear, described sector rack is arranged on interior spherical shell rear side, and described outer spherical shell rear side offers the groove that manifests sector rack.

3. spherical pair structure automobile headlight regulating device according to claim 2, is characterized in that: described groove width equates with sector rack, and described groove length is greater than the arc length of sector rack and adapts with interior spherical shell feathering angle degree.

4. spherical pair structure automobile headlight regulating device according to claim 1, it is characterized in that: described motor transmission mechanism comprises linear stepping motor, the bulb push rod being promoted by linear stepping motor and the ball seat nest matching with bulb push rod, and described ball seat nest is arranged at outer spherical shell rear side top or bottom.

5. spherical pair structure automobile headlight regulating device according to claim 1, is characterized in that: described outer spherical shell is spirally connected, fastens or be welded by upper half shell and lower half shell.

6. spherical pair structure automobile headlight regulating device according to claim 1, is characterized in that: support frame as described above bottom offers the connecting bore for connection body.