CN201970914U

CN201970914U - Rotating and driving device of adaptive steering headlamp used for vehicle

Info

Publication number: CN201970914U
Application number: CN 201120090112
Authority: CN
Inventors: 刘敏; 张雪川; 杨轩; 王文平
Original assignee: Beijing Jingwei Hirain Tech Co Ltd
Current assignee: Beijing Jingwei Hirain Tech Co Ltd
Priority date: 2011-03-30
Filing date: 2011-03-30
Publication date: 2011-09-14
Anticipated expiration: 2021-03-30

Abstract

The utility model provides a rotating and driving device of an adaptive steering headlamp used for a vehicle, which comprises a driving mechanism and an electronic control unit, wherein the driving mechanism is in transmission connection between a driving motor and a rotating shaft of the headlamp; the electronic control unit is electrically connected with the driving motor; the driving mechanism comprises a first transmission part and a second transmission part; the first transmission part is connected with an output shaft of the driving motor and performs linear reciprocating motion under the driving of the output shaft; the first end of the second transmission part is connected with the first transmission part and performs reciprocating swing along with the linear reciprocating motion of the first transmission part; and the second end is rotatably connected with a rotating shaft of a headlamp holder. The rotating and driving device drives the headlamp to complete left and right rotation through a primary retarding mechanism, has the advantages of simple structure, small occupied space, low cost and higher generality and is easy to debug and assemble.

Description

Rotary driving device of self-adaptive steering headlamp for vehicle

Technical Field

The utility model relates to a vehicle lighting field especially relates to a rotary driving device of self-adaptation steering head-light for vehicle.

Background

At present, the development and application of a rotary driving device of a self-adaptive steering headlamp for a vehicle are more and more extensive, and the rotary driving device can automatically adjust the rotating angle of the headlamp of the vehicle according to the change of road conditions, driving conditions and weather conditions, thereby effectively improving the driving safety of the vehicle and overcoming a plurality of adverse effects of the traditional headlamp system.

The self-adaptive steering headlamp rotation driving device is an electromechanical integrated system, in order to meet the use requirement of a steering headlamp, the driving device usually adopts a three-level or four-level gear reduction transmission mechanism or a worm and gear reduction mechanism, the adopted multi-level gear transmission mechanism not only occupies large space and is complex to assemble, but also the multi-level injection molding gear is difficult to control due to the fact that the tooth side clearance of each level of gear is influenced by temperature, the transmission mechanism is easy to block, and the cost is too high by adopting the metal worm and gear reduction mechanism. In addition, the gear reduction transmission mechanism or the worm gear reduction mechanism is usually assembled with the driving motor, the sensor and the PCB in a shell, the shell is assembled with the lamp bracket and the headlamp and placed in a narrow and sealed lamp room, and the lamp room has different space sizes for different vehicle types, so the miniaturization, the generalization and the low cost of the steering headlamp rotation driving device are necessary requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotary driving device of self-adaptation steering head-light for vehicle to solve among the prior art rotary driving device occupation space of rotary head-light big, the structure is complicated, the technical problem that the commonality is low.

In order to achieve the above object, the present invention provides a rotation driving device of a self-adaptive steering head lamp for a vehicle, including: a drive motor; the driving mechanism is in transmission connection between the driving motor and a rotating shaft of the headlamp; the electronic control unit is electrically connected with the driving motor, wherein the driving mechanism comprises: the first transmission piece is connected with a motor output shaft of the driving motor and is driven by the motor output shaft to do linear reciprocating motion; and the first end of the second transmission piece is connected with the first transmission piece and swings back and forth along with the linear reciprocating motion of the first transmission piece, and the second end of the second transmission piece is in transmission connection with the rotating shaft of the headlamp bracket.

Further, the first transmission piece is a rack; the second transmission part is a staggered tooth mechanism, and a first end of the staggered tooth mechanism is provided with a gear rack engaged with the gear rackU shapeA gear.

Furthermore, the driving motor is a linear sliding motor, and an output shaft of the linear sliding motor is fixedly connected with the rack.

Further, the driving motor is a rotating motor, and external threads are arranged on the periphery of an output shaft of the motor; an axial through hole is formed in the rack, and an internal thread matched with the external thread is formed in the axial through hole.

Further, the utility model provides a rotary driving device still includes the epitheca and with the inferior valve of epitheca looks assorted, is provided with coaxial through-hole on the relevant position of the second end of staggered teeth mechanism and epitheca, be provided with in the through-hole with the external splines assorted internal spline of head-light lighting fixture rotation axis.

Furthermore, the upper shell and the lower shell are locked through a buckle; the lower shell comprises a driving mechanism mounting groove and an electric control unit mounting groove, the staggered tooth mechanism is positioned in the driving mechanism mounting groove, and staggered tooth mechanism limiting blocks are arranged on two sides of a first end of the staggered tooth mechanism; the staggered tooth mechanism eliminates the tooth side clearance through a linear spring.

Further, the driving mechanism mounting groove and the electric control unit mounting groove are separated by a partition plate.

Furthermore, a U-shaped extension part is arranged at one end of the rack, which is far away from the driving motor; the driving mechanism mounting groove is internally provided with a U-shaped groove matched with the U-shaped extending part, and the side wall of the U-shaped groove is provided with an oil storage tank.

Furthermore, a T-shaped shaft shoulder in interference fit with the inner wall of the driving mechanism mounting groove is arranged on the position, adjacent to the shell of the driving motor, of the motor output shaft, and a reinforcing rib is arranged on the lower portion of the T-shaped shaft shoulder.

Further, the electronic control unit includes: a travel switch or position sensor that records rack travel; and the signal input end of the controller is connected with the signal output end of the travel switch or the position sensor, and the signal output end of the controller is connected with the signal input end of the driving motor.

The utility model discloses following beneficial effect has:

1. the utility model provides a rotary driving device of self-adaptation steering head-light for vehicle drives head-light through the one-level reduction gears who comprises helical drive and rack and accomplishes left and right rotary motion, simple structure, and occupation space is little, easily debugs the assembly, and low cost has higher commonality.

2. The driving mechanism and the electric control unit are mutually separated and compactly assembled in the shell through the partition plate, so that not only is the phenomenon that a lubricant or oil used by the driving mechanism pollutes elements of the control circuit board avoided, but also the phenomenon that abrasion slag of the control circuit board enters a gear of the driving mechanism to bring adverse effects can be avoided, and the rigidity of the shell can be improved. The utility model discloses simple structure, occupation space is little, easily debugs the assembly, and low cost has the commonality.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic view of the combined structure of the preferred embodiment of the present invention;

FIG. 2 is a schematic view of the internal assembly structure of the lower case according to the preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a cross-sectional view C-C of FIG. 2; and

fig. 6 is an exploded view of the preferred embodiment of the present invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 and 2, the present invention provides a rotation driving apparatus of an adaptive steering head lamp for a vehicle, including: a drive motor 10 having a motor output shaft 11; a driving mechanism 30 which is connected between the driving motor 10 and the rotating shaft of the headlamp bracket in a transmission way; the electric control unit 50 is electrically connected with the driving motor 10, wherein the driving mechanism 30 comprises a first transmission piece which is connected with the motor output shaft 11 of the driving motor 10 and is driven by the motor output shaft 11 to do linear reciprocating motion; and the first end of the second transmission piece is connected with the first transmission piece and swings in a reciprocating manner along with the linear reciprocating motion of the first transmission piece, and the second end of the second transmission piece is in transmission connection with a rotating shaft of the headlamp bracket.

As a preferred embodiment, the first transmission member is a rack 31; the second transmission member is a staggered teeth mechanism 33, and a first end of the staggered teeth mechanism 33 is provided with a gear engaged with the rack 31U shapeAnd the second end of the gear and staggered tooth mechanism 33 is in transmission connection with a rotating shaft of the headlamp lamp holder.

The primary speed reduction transmission device formed by the rack 31 and the staggered tooth mechanism 33 can transmit the power of the motor output shaft 11 of the driving motor 10 to the rotating shaft of the headlamp lamp holder, so that the left and right swinging of the headlamp is realized, the structure of the rotary driving device of the headlamp is simplified, the occupied space of the rotary driving device is reduced, and the universality of the rotary driving device is improved.

Of course, the first transmission member may also be a pull rod driven by the output shaft of the motor to perform linear reciprocating motion, the second transmission member may be a rocking rod, the first end of the rocking rod is connected with the pull rod and swings along with the linear reciprocating motion of the pull rod, and the second end of the rocking rod is used as a swing fulcrum and is coaxially connected with the rotating shaft of the headlamp holder in a transmission manner.

The lower casing 40 is further provided with three hollow guiding and positioning posts 47 for facilitating positioning and installation between the upper casing 20 and the lower casing 40, and three solid posts (not shown in the figure) are provided at corresponding positions of the upper casing 20, and the three solid posts are matched with the holes and the shafts to realize guiding and positioning.

As shown in fig. 3, as a preferred embodiment, the driving motor 10 may be a rotating motor, the motor output shaft 11 performs a rotating motion, in this case, an axial through hole is formed in the rack 31, a nut 32 is embedded in the axial through hole, and a thread matching with the nut 32 is formed on the outer circumference of the motor output shaft 11, that is, a screw transmission relationship is formed between the motor output shaft 11 and the rack 31, the reciprocating rotation motion of the motor output shaft 11 is converted into the reciprocating linear motion of the rack 31, and then the reciprocating linear motion of the rack 31 is converted into the left-right swinging motion of the rotating headlamp.

Of course, the driving motor 10 may also be a linear sliding motor, and an output shaft of the linear sliding motor reciprocates along an axis, in this case, the output shaft of the linear sliding motor is fixedly connected to the rack 31, and the rack 31 can reciprocate linearly under the driving of the output shaft of the linear sliding motor. In fact, at this moment, the rack can be provided with an axial through hole, and a radial anti-rotation set screw is arranged in the axial through hole and is tightly matched and fixed with an output shaft of the linear sliding motor.

In order to play better guard action to each part of whole rotary driving device to be convenient for realize rotary driving device's nimble installation and improvement commonality, the utility model provides a rotary driving device still include epitheca 20 and with epitheca 20 assorted inferior valve 40, and, be provided with coaxial through-hole on the second end of wrong tooth mechanism 33 and the relevant position of epitheca 20, can set up the internal spline 35 with the external spline assorted of head-light lighting fixture rotation axis in the through-hole. The driving mechanism 30, the electronic control unit 50 and the motor output shaft 11 are all placed in a space formed by the upper shell 20 and the lower shell 40, the upper shell 20 and the lower shell 40 can be locked through the buckle 60, the buckle 60 can be locked by an upper buckle (on the inner wall of the upper shell 20 and not shown in the figure) and a lower buckle 41 which are respectively arranged on the upper shell 20 and the lower shell 40, and the upper shell is provided with the internal spline 35 matched with the external spline of the headlamp lamp holder rotating shaft, so that the universality of the rotary driving device can be greatly improved.

Preferably, the lower case 40 includes a driving mechanism mounting groove in which the driving mechanism is mounted and an electronic control unit mounting groove in which the electronic control unit is mounted, the driving mechanism mounting groove and the electronic control unit mounting groove being separated by a partition 43. The partition 43 can produce the following effects: on the first hand, the control circuit board element of the electric control unit is prevented from being polluted by lubricant or oil used by the driving mechanism; on the second hand, the abrasion slag of the control circuit board is prevented from entering the gear of the driving mechanism to bring adverse effects; in the third aspect, the transmission part of the rotary driving device and the electric control unit are separately arranged, and when the electric control unit needs to be replaced, the transmission part does not need to be removed, so that the rotary driving device is convenient to disassemble and assemble and is convenient to maintain; in the fourth aspect, the rigidity of the upper case 20 and the lower case 40 can be improved.

In order to limit the swing angle of the second end of the staggered teeth mechanism 33, staggered teeth mechanism limiting blocks 42 are arranged on two sides of the first end of the staggered teeth mechanism 33.

As shown in fig. 4, in order to prevent the rack 31 from rotating along with the rotation of the motor output shaft 11, a U-shaped protrusion 31a may be provided on an end of the rack 31 remote from the driving motor 10, and a U-shaped groove 45 that fits with the U-shaped protrusion 31a may be provided in the driving mechanism mounting groove. An oil reservoir 46 (shown in fig. 2) for storing lubricating oil is provided on a side wall of the U-shaped groove 45 to lubricate the rack 31.

As shown in fig. 5, a T-shaped shoulder 15 which is in interference fit with the inner wall of the driving mechanism mounting groove is arranged on the part of the motor output shaft 11 adjacent to the housing 13 of the driving motor 10, and a reinforcing rib 17 is arranged at the lower part of the T-shaped shoulder 15. The T-shaped shaft shoulder 15 can limit the driving motor 10 from moving along the axial direction of the motor output shaft 11, and the reinforcing ribs 17 can enhance the strength of the T-shaped shaft shoulder 15.

As shown in fig. 6, the backlash between the two blades constituting the staggered teeth mechanism 33 is eliminated by a linear spring 33c, and the linear spring 33c is sleeved between the first spring column 33a and the second spring column 33 b.

Referring again to fig. 2 and 4, to achieve the effect of adaptive steering, the electronic control unit 50 may include: a travel switch or position sensor 51 that records the travel of the rack 31; a controller, the signal input of which is connected to the signal output of the travel switch or position sensor 51, and the signal output of which is connected to the signal input of the drive motor 10. The shell 13 of the driving motor 10 is connected with the output pin 14 of the motor and the PCB 53 through the motor external connector 12, the travel switch or the position sensor 51 records the travel of the rack 31 and feeds the travel back to the controller on the PCB 53, the controller output on the PCB 53 is connected with the outside through the output connector 56, and the positioning column 55 used for positioning the PCB 53 is further arranged below the PCB 53. The PCB 53 and the travel switch or the position sensor 51 are separated from the driving mechanism 30 by the partition 43, and the structure is compact.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary drive device of an adaptive steering head lamp for a vehicle, characterized by comprising:

a drive motor (10) having a motor output shaft (11);

the driving mechanism (30) is in transmission connection between the driving motor (10) and a rotating shaft of a headlamp lamp holder;

an electric control unit (50) electrically connected with the driving motor (10),

wherein,

the drive mechanism (30) comprises:

the first transmission piece is connected with a motor output shaft (11) of the driving motor (10) and is driven by the motor output shaft (11) to do linear reciprocating motion;

and the first end of the second transmission piece is connected with the first transmission piece and swings in a reciprocating manner along with the linear reciprocating motion of the first transmission piece, and the second end of the second transmission piece is in transmission connection with a rotating shaft of the headlamp bracket.

2. Rotary drive device according to claim 1,

the first transmission piece is a rack (31);

the second transmission part is a staggered tooth mechanism (33), and a first end of the staggered tooth mechanism (33) is provided with a gear rack (31)U shapeA gear.

3. A rotary drive as claimed in claim 2, characterized in that the drive motor (10) is a linear slide motor, the output shaft of which is fixedly connected to the toothed rack (31).

4. Rotary drive device according to claim 2,

the driving motor (10) is a rotating motor, and external threads are arranged on the periphery of an output shaft (11) of the motor;

an axial through hole is formed in the rack (31), and an internal thread (32) matched with the external thread is formed in the axial through hole.

5. The rotary drive device according to any one of claims 2 to 4, further comprising an upper housing (20) and a lower housing (40) matched with the upper housing (20), wherein coaxial through holes are arranged at the second end of the staggered teeth mechanism (33) and corresponding positions of the upper housing (20), and internal splines (35) matched with external splines of the rotating shaft of the headlamp lamp holder are arranged in the through holes.

6. Rotary drive device according to claim 5,

the upper shell (20) and the lower shell (40) are locked through a buckle (60);

the lower shell (40) comprises a driving mechanism mounting groove and an electric control unit mounting groove, the staggered tooth mechanism (33) is positioned in the driving mechanism mounting groove, and staggered tooth mechanism limiting blocks (42) are arranged on two sides of the first end of the staggered tooth mechanism (33);

the staggered tooth mechanism (33) eliminates the tooth side clearance through a linear spring (33 c).

7. The rotary drive device according to claim 6, wherein the drive mechanism mounting slot is separated from the electronic control unit mounting slot by a partition (43).

8. Rotary drive device according to claim 7,

one end of the rack (31) far away from the driving motor (10) is provided with a U-shaped extension part (31 a);

the driving mechanism mounting groove is internally provided with a U-shaped groove (45) matched with the U-shaped extending part (31a), and the side wall of the U-shaped groove (45) is provided with an oil storage groove (46).

9. The rotary drive device according to claim 8, characterized in that a T-shaped shoulder (15) which is in interference fit with the inner wall of the drive mechanism mounting groove is provided on a portion of the motor output shaft (11) adjacent to the housing (13) of the drive motor (10), and a reinforcing rib (17) is provided on a lower portion of the T-shaped shoulder (15).

10. The rotary drive device according to claim 1, characterized in that the electronic control unit (50) comprises:

a travel switch or position sensor (51) which records the travel of the first transmission member;

and the signal input end of the controller is connected with the signal output end of the travel switch or the position sensor (51), and the signal output end of the controller is connected with the signal input end of the driving motor (10).