阅读说明：本技术 一种车灯光学调节装置 (Optical adjusting device for car lamp ) 是由 蔡金美 于 2020-04-21 设计创作，主要内容包括：本发明提供一种车灯光学调节装置,包括电机、固定支架、传动齿轮环、调节支架、金属弹片、拇指齿轮、固定螺钉、调节螺杆、球头座、固定片、壳体和调光支架,调节装置和调光支架一并安装壳体内,电机上设置有电机球头,电机球头、传动齿轮环、调节螺杆、球头座的沿车身坐标系x方向的中心轴线为同轴,传动齿轮环通过卡接的方式装入固定支架上,将调节螺杆放置于调节支架之内后,拇指齿轮通过过盈配合的方式安装于壳体上,并用固定片,从内侧将拇指齿轮固定在固定支架上,电机通过固定螺钉固定在固定支架上。将结构紧凑化,减少耦合点的数量,降低调节时的扭矩的特性,又能让已知同轴调节中过旋转短板得以解决。(The invention provides an optical adjusting device for a car lamp, which comprises a motor, a fixed support, a transmission gear ring, an adjusting support, a metal elastic sheet, a thumb gear, a fixed screw, an adjusting screw rod, a ball head seat, a fixed sheet, a shell and a dimming support. The structure is compact, the number of coupling points is reduced, the torque characteristic during adjustment is reduced, and the problem of over-rotation of the short plate in the known coaxial adjustment can be solved.)

1. An optical adjustment device for a vehicle lamp, comprising: the light-adjusting and light-adjusting device comprises a motor (1), a fixed support (2), a transmission gear ring (3), an adjusting support (4), a metal elastic sheet (5), a thumb gear (6), a fixing screw (7), an adjusting screw (8), a ball seat (9), a fixing sheet (10), a shell (11) and a light-adjusting support (12), wherein the adjusting device is integrally fixed on the light-adjusting support (12), and is installed in the shell (11) together with the light-adjusting support (12), a motor ball head (1.1) is arranged on the motor (1), the central axis of the motor ball head (1.1), the transmission gear ring (3), the adjusting screw (8) and the ball seat (9) along the x direction of a coordinate system of a vehicle body is coaxial, the transmission gear ring (3) is installed on the fixed support (2) in a clamping manner, the adjusting screw (8) is placed in the adjusting support (4), and the adjusting screw (8) and the adjusting support (4) are adjusted through the metal elastic sheet (5) and the thumb gear (6) is arranged on the shell (11) in an interference fit mode and is fixed on the fixing support (2) from the inner side by the fixing piece (10), and the motor (1) is fixed on the fixing support (2) through the fixing screw (7).

2. An optical adjustment device for a vehicular lamp according to claim 1, wherein: be provided with teeth of a cogwheel structure (3.1) and buckle structure (3.2) on transmission gear ring (3), transmission gear ring (3) are through teeth of a cogwheel structure (3.1) and thumb gear (6) mechanical engagement, and transmission gear ring (3) are through buckle structure (3.2) and fixed bolster (2) cooperation realization product fixed.

3. An optical adjustment device for a vehicular lamp according to claim 1, wherein: be provided with ball socket structure (4.1) on adjusting support (4), bellied falcon structure (4.2), helicitic texture (4.3), installation fulcrum (4.4) and end bit architecture (4.5), adjust support (4) and cooperate through ball socket structure (4.1) and motor bulb (1.1), bellied falcon structure (4.2) are used for adjusting the direction when support (4) are installed transmission gear ring (3) to and realize adjusting support (4) and slide for transmission gear ring (3), helicitic texture (4.3) and adjusting screw (8) cooperation, installation fulcrum (4.4) are fixed with the quad slit on metal shrapnel (5), end bit architecture (4.5) and are used for the position to prescribe a limit.

4. An optical adjustment device for a vehicular lamp according to claim 1, wherein: the thumb gear (6) is provided with bevel teeth (6.1), and the thumb gear (6) is mechanically meshed with the gear tooth structure (3.1) on the transmission gear ring (3) through the bevel teeth (6.1).

5. An optical adjustment device for a vehicular lamp according to claim 1, wherein: be provided with on adjusting screw (8) and end position boss (8.1), screw thread (8.2) and screw rod bulb (8.3), adjusting screw (8) are through screw thread (8.2) and the screw thread structure (4.3) cooperation on adjusting support (4), end position boss (8.1) and set up at adjusting screw (8) both ends, carry on spacingly to adjusting screw (8), and screw rod bulb (8.3) are connected with bulb seat (9).

6. An optical adjustment device for a vehicular lamp according to claim 5, wherein: the thread (8.1) on the adjusting screw rod (8) is matched with the thread structure (4.3) on the adjusting support (4), the fixing and the installation of the three parts are realized by buckling the installation pivot (4.4) of the adjusting support (4) through the metal elastic sheet (5), and a small assembly (13) is formed.

7. An optical adjustment device for a vehicular lamp according to claim 6, wherein: protruding falcon structure (4.2) on little assembly (13) through adjusting support (4) with the inboard recess phase-match of drive gear ring (3) for direction when adjusting support (4) and installing drive gear ring (3) is fixed, and makes little assembly (13) along centre of a circle direction slip in drive gear ring (3).

8. An optical adjustment device for a vehicular lamp according to claim 1, wherein: when the motor (1) rotates, the motor ball head is driven to move along the X axial direction, the adjusting support (4) is pushed to move along the X axial direction in the transmission gear ring (3), and therefore the adjusting screw rod is driven to move in the X axial direction.

9. An optical adjustment device for a vehicular lamp according to claim 1, wherein: the thumb gear (6) drives the transmission gear ring (3) to rotate, so that the adjusting bracket (4) fixed in the transmission gear ring (3) rotates together, and due to the structure of the small assembly (13), the adjusting screw (8) is connected with the ball head seat (9) and moves along the X axial direction relative to the adjusting bracket (4).

10. An optical adjustment device for a vehicular lamp according to claim 1, wherein: the thumb gear (6) is provided with a groove structure and is embedded into the round hole of the fixing support (2), so that the thumb gear (6) is more firmly installed in the shell (11), and the Y-direction lock of the thumb gear (6) is locked by the fixing piece (10).

Technical Field

The invention relates to the technical field of automobile lamps, in particular to an optical adjusting device for an automobile lamp.

Background

The adjusting device for adjusting the headlights of a motor vehicle is intended to ensure that the light energy of the headlight meets the requirements of regulations within a predetermined light pattern. Firstly, after the production is finished, the adjusting device is adjusted, so that the distance and near light functions can be adjusted up, down, left and right within the range of regulations and customer requirements. Secondly, after assembly, the influence of errors generated in the production and manufacturing process on actual light can be compensated through adjustment of the adjusting device. The main function is to complete the light modulation and meet the requirements of the regulations.

The existing headlamp adjusting systems are divided into two types, one is a non-coaxial adjusting device, and the electric adjustment generally comprises an adjusting slide block for fixing a motor, a stepping motor, an adjusting screw rod and an adjusting gear. The manual adjustment is realized by rotating the adjusting gear to drive the adjusting screw to rotate, and then driving the adjusting slide block to slide in the guide rail through the rotation of the screw, so that the manual adjustment function is realized. The adjusting slide block and the adjusting screw rod can be provided with a stop structure, so that the phenomenon of over-rotation in the adjusting process is prevented. The adjusting mode has the advantages that the structure is flexible and changeable, the adjusting stroke ranges of different customers can be freely customized according to actual design requirements, and the over-adjusting protection structure is more stable and reliable due to the fact that the metal elastic sheet is used as a fixed support, and is more reliable compared with the traditional mode of realizing over-adjustment through deformation of plastic parts. A disadvantage of the known non-coaxial adjustment arrangements is that the manual adjustment and the electric adjustment each perform an adjustment in two parallel axes. Because manual regulation and electric adjustment are not on the same axis, when manual regulation, can cause an axial force to the motor bulb and lead to the product to prolong the axial deflection for the light type is unstable. Meanwhile, as the product is adjusted on the same axis, after the lamp is installed on the whole vehicle, the lamp is adjusted on the same axis, and hysteresis can occur after multiple times of adjustment. Resulting in a shift of the cutoff. Meanwhile, the two are not on the same axis, so that the number of coupling points during adjustment is increased. So that the adjusting torque is increased and the adjustment is more difficult.

The other is a coaxial adjusting device, which generally comprises a motor, an actuator, a transmission part, an adjusting part, a rotating part, a shell and an adjusting nut. In practical use, the actuator is mounted on the motor and fixed with the transmission component. When the motor operates, the actuator drives the transmission component to axially slide in the adjusting component, so that the rotating component is driven to axially move. The rotating member and the transmission member are connected by a chute, and the transmission member is configured to have an elastically variable structure, so that the rotating member can be "over-rotated" with respect to the transmission member. The known coaxial adjustment technique uses the cooperation of a transmission member having an elastic structure and a rotation member to achieve axial movement. Wherein the elastic component is provided with a small protruding structure which is matched with a small groove structure on the rotating component. In practical application, because the parts all belong to plastic structures, and plastic products are under the influence of injection molding, assembly and processing processes, and the characteristics of the elastic structure, the product can not be well ensured that the protruding structure and the groove structure can be in complete contact when being matched. Meanwhile, due to the characteristics of the elastic structure, if the rotating torque is too large in actual rotation, the elastic structure deforms to adapt to the too large adjusting torque. However, the inner side of the elastic structure is provided with a supporting structure for supporting the deformation of the elastic structure, so that the structure cannot be deformed during actual adjustment, the contacted convex structure is abraded, the product fails due to the action of internal stress in long-term use, the adjustment requirement cannot be met, and certain potential safety hazards exist.

Disclosure of Invention

The invention aims to provide an optical adjusting device for a vehicle lamp, which has the characteristics of eliminating the offset of a light and shade cut-off line caused by axial component force generated in the adjusting process of a non-coaxial adjusting system, compacting the structure, reducing the number of coupling points, reducing the torque during adjustment and solving the problem of over-rotating short plates in the known coaxial adjusting.

The invention provides an optical adjusting device for a car lamp, which comprises a motor, a fixed support, a transmission gear ring, an adjusting support, a metal elastic sheet, a thumb gear, a fixed screw, an adjusting screw, a ball head seat, a fixed sheet, a shell and a dimming support, wherein the adjusting device is integrally fixed on the dimming support, the adjusting device and the dimming support are installed in the shell together, the motor is provided with a motor ball head, the central axes of the motor ball head, the transmission gear ring, the adjusting screw and the ball head seat along the x direction of a car body coordinate system are coaxial, the transmission gear ring is installed on the fixed support in a clamping way, after the adjusting screw is placed in the adjusting support, the adjusting screw and the adjusting support are positioned together through the metal elastic sheet and the adjusting support, the thumb gear is installed on the shell in an interference fit way, and the thumb gear is fixed on the fixed support from the inner side, the motor is fixed on the fixed support through a fixing screw.

The further improvement lies in that: be provided with teeth of a cogwheel structure and buckle structure on the transmission gear ring, the transmission gear ring passes through teeth of a cogwheel structure and thumb gear mechanical engagement, and the transmission gear ring passes through buckle structure and fixed bolster cooperation and realizes that the product is fixed.

The further improvement lies in that: the adjusting support is provided with a ball socket structure, a convex tenon structure, a thread structure, an installation fulcrum and a stop structure, the adjusting support is matched with the motor ball head through the ball socket structure, the convex tenon structure is used for adjusting the guide of the support when the support is installed on a transmission gear ring and realizing the sliding of the adjusting support relative to the transmission gear ring, the thread structure is matched with an adjusting screw, the installation fulcrum is fixed with a square hole in a metal elastic sheet, and the stop structure is used for limiting the position.

The further improvement lies in that: the thumb gear is provided with bevel teeth, and the thumb gear is mechanically meshed with the gear tooth structure on the transmission gear ring through the bevel teeth.

The further improvement lies in that: the adjusting screw is provided with a stop boss, threads and a screw ball head, the adjusting screw is matched with a thread structure on the adjusting support through the threads, the stop bosses are arranged at two ends of the adjusting screw to limit the adjusting screw, and the screw ball head is connected with the ball head seat.

The further improvement lies in that: the threads on the adjusting screw are matched with the thread structures on the adjusting support, the three parts are fixed and installed by buckling the installation pivot of the adjusting support through the metal elastic sheet, and a small assembly is formed.

The further improvement lies in that: the small assembly is matched with the groove on the inner side of the transmission gear ring through the convex tenon structure on the adjusting support and used for adjusting the guide and fixation of the support when the support is installed on the transmission gear ring, and the small assembly slides in the transmission gear ring along the direction of the circle center.

The further improvement lies in that: when the motor rotates, the motor ball head is driven to move along the X-axis direction, the adjusting support is pushed to move along the X-axis direction in the transmission gear ring, and therefore the adjusting screw rod is driven to move in the X-axis direction.

The further improvement lies in that: the thumb gear drives the transmission gear ring to rotate, so that the adjusting bracket fixed in the transmission gear ring rotates together.

The further improvement lies in that: the thumb gear is provided with a groove structure which is embedded into the round hole of the fixing support, so that the thumb gear is more firmly arranged in the shell, and the Y-direction lock of the thumb gear is locked by the fixing piece.

The thumb gear needs to be installed from the outer side of the shell, so that the requirement of a customer on the sealing performance of the lamp body can be better met due to the use of a necessary waterproof structure (such as a sealing gasket).

The adjusting device assembly can be arranged on the adjusting bracket and then arranged on the shell, and can also be directly arranged on the shell. The invention is firstly installed on the adjusting bracket mainly because the weight of the important optical components is taken as a reference. In order to ensure better mechanical strength of a product, the adjusting mechanism and the important optical component are assembled and then fixed through a support and then installed on the shell, so that the problem of light adjustment caused by shell deformation can be solved, and the adjusting device can be directly installed on the shell for the optical component with relatively smaller total mass.

When the adjusting device is manually adjusted, the thumb gear is rotated to drive the transmission gear ring to rotate, the adjusting support is nested in the transmission gear ring, and when the transmission gear ring rotates, the adjusting support is driven to axially move along the fixing screw. When the electric adjusting device is used for electric adjustment, the electric motor ball head stretches back and forth to move, the adjusting support is driven to slide back and forth in the transmission gear ring, and the fixing screw can move axially along the adjusting support.

The manual adjustment is realized in a way that the thumb gear is rotated, so that the transmission gear ring can rotate circumferentially in the fixed support and drive the adjusting slide block to rotate, and the adjusting screw rod which is in threaded fit with the adjusting support is rotated along the X axial direction and realizes displacement movement along the X axial direction through the rotation of the adjusting slide block; the electric adjustment is realized by fixing the motor on the fixed support, most preferably fixing the motor by a screw, installing a ball head on the motor and a ball socket on the adjusting support together, and driving the adjusting support and the adjusting screw rod to slide in the transmission gear ring when the ball head of the motor stretches along the X axis.

The coaxial adjusting technology of the invention realizes the displacement in the X axial direction by using the same mechanism, namely the rotation or the sliding of the adjusting bracket and the adjusting screw rod. Thus, the coaxial adjustment is achieved.

The transmission gear ring is made of POM. Has good self-lubricating property, creep resistance and fatigue resistance.

The adjusting bracket is made of glass fiber added with 10-40 parts of PBT.

The adjusting screw is made of glass fiber added with 10-40 parts of PA 66. In practical application, according to different requirements of customers on adjusting force, the material can also be PA66 directly, or 20-40 glass fiber added with PBT, or a metal material.

The fixing support is made of glass fiber added with 10-40 parts of PBT.

The thumb gear is a common part in a car lamp dimming structure, is used by a plurality of production enterprises, and is mainly made of 20-40 glass fibers added by PA 66.

The invention has the beneficial effects that: the coaxial adjusting device has the characteristics of eliminating the offset of a cut-off line caused by axial component force generated in the adjusting process of a non-coaxial adjusting system, compacting the structure, reducing the number of coupling points and reducing the torque during adjusting, can solve the problem of over-rotating short plates in the known coaxial adjusting, and is a novel design concept based on the currently known coaxial adjusting technology.

Drawings

Fig. 1 is a diagram showing the effect of the installation of the adjusting device of the present invention in a whole lamp.

Fig. 2 is a perspective view of the adjustment device of the present invention.

Fig. 3 is an exploded view of the adjustment device of the present invention.

FIG. 4 is a small assembly of the adjusting slide block in the adjusting device of the present invention

FIG. 5 is a diagram of an embodiment of an adjustment bracket of the present invention

FIG. 6 is a front view of the adjustment mechanism of the present invention

FIG. 7 is a cross-sectional view A-A of the assembled relationship between the adjustment bracket and the drive gear ring of the present invention.

Fig. 8 is a cross-sectional view B-B of the assembled relationship between the drive gear ring and the fixed bracket of the present invention.

Wherein: 1-motor, 2-fixed bracket, 3-transmission gear ring, 4-adjusting bracket, 5-metal shrapnel, 6-thumb gear, 7-fixing screw, 8-adjusting screw, 9-ball seat, 10-fixing piece, 11-shell, 12-dimming bracket, 13-small assembly, 1.1-motor ball, 3.1-gear tooth structure, 3.2-buckle structure, 4.1-ball seat structure, 4.2-convex falcon structure, 4.3-thread structure, 4.4-mounting fulcrum, 4.5-stop structure, 6.1-taper tooth, 8.1-stop boss, 8.2-thread and 8.3-screw rod ball.

Detailed Description

For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.

The invention provides an optical adjusting device for a car lamp, which comprises a motor 1, a fixed support 2, a transmission gear ring 3, an adjusting support 4, a metal elastic sheet 5, a thumb gear 6, a fixing screw 7, an adjusting screw 8, a ball seat 9, a fixing sheet 10, a shell 11 and a dimming support 12, wherein the adjusting device is integrally fixed on the dimming support 12, the adjusting device and the dimming support 12 are installed in the shell 11, the motor 1 is provided with a motor ball head 1.1, the transmission gear ring 3, the adjusting screw 8 and the ball seat 9 are coaxial along the central axis of a car body coordinate system x direction, the transmission gear ring 3 is installed on the fixed support 2 in a clamping manner, after the adjusting screw 8 is placed in the adjusting support 4, the adjusting screw 8 and the adjusting support 4 are positioned together through the metal elastic sheet 5 and the adjusting support 4, the thumb gear 6 is installed on the shell 11 in an interference fit manner, the thumb gear 6 is fixed on the fixing bracket 2 from the inner side by a fixing piece 10, and the motor 1 is fixed on the fixing bracket 2 by a fixing screw 7. Be provided with teeth of a cogwheel structure 3.1 and buckle structure 3.2 on the transmission gear ring 3, transmission gear ring 3 realizes through the cooperation of teeth of a cogwheel structure 3.1 and thumb gear 6 mechanical meshing that transmission gear ring 3 passes through buckle structure 3.2 and fixed bolster 2 that the product is fixed. Adjusting and being provided with ball socket structure 4.1, bellied falcon structure 4.2, helicitic texture 4.3, installation fulcrum 4.4 and end position structure 4.5 on the support 4, adjusting support 4 and passing through ball socket structure 4.1 and motor bulb 1.1 cooperation, bellied falcon structure 4.2 is used for adjusting the direction when support 4 installs transmission gear ring 3 to and realize adjusting support 4 and slide for transmission gear ring 3, helicitic texture 4.3 and adjusting screw 8 cooperation, installation fulcrum 4.4 is fixed with the quad slit on the metal shrapnel 5, and end position structure 4.5 is used for the position to prescribe a limit. The thumb gear 6 is provided with bevel teeth 6.1, and the thumb gear 6 is mechanically meshed with the gear tooth structure 3.1 on the transmission gear ring 3 through the bevel teeth 6.1. The adjusting screw 8 is provided with a stop boss 8.1, a thread 8.2 and a screw ball head 8.3, the adjusting screw 8 is matched with a thread structure 4.3 on the adjusting support 4 through the thread 8.2, the stop boss 8.1 is arranged at two ends of the adjusting screw 8 to limit the adjusting screw 8, and the screw ball head 8.3 is connected with the ball head seat 9. The threads 8.1 on the adjusting screw rod 8 are matched with the thread structures 4.3 on the adjusting support 4, the mounting pivot 4.4 of the adjusting support 4 is buckled through the metal elastic sheet 5 to realize the fixation and the mounting of the three parts, and a small assembly 13 is formed. The small assembly 13 is matched with the groove on the inner side of the transmission gear ring 3 through the convex tenon structure 4.2 on the adjusting support 4, and is used for guiding and fixing when the adjusting support 4 is installed on the transmission gear ring 3, and the small assembly 13 slides in the transmission gear ring 3 along the direction of the circle center. When the motor 1 rotates, the motor ball head is driven to move along the X-axis direction, the adjusting support 4 is pushed to move along the X-axis direction in the transmission gear ring 3, and therefore the adjusting screw rod is driven to move in the X-axis direction. The thumb gear 6 drives the transmission gear ring 3 to rotate, so that the adjusting bracket 4 fixed in the transmission gear ring 3 rotates together, and due to the structure of the small assembly 13, the adjusting screw 8 is connected with the ball seat 9 and moves along the X-axis direction relative to the adjusting bracket 4. The thumb gear 6 is provided with a groove structure and is embedded into the round hole of the fixing support 2, so that the thumb gear 6 is more firmly arranged in the shell 11, and the Y-direction of the thumb gear 6 is locked by the fixing piece 10.

The thumb gear needs to be installed from the outer side of the shell, so that the use of a necessary waterproof structure, such as a sealing gasket, can better meet the requirement of a customer on the sealing performance of the lamp body.

The adjusting device assembly can be arranged on the adjusting bracket and then arranged on the shell, and can also be directly arranged on the shell. The invention is firstly installed on the adjusting bracket mainly because the weight of the important optical components is taken as a reference. In order to ensure better mechanical strength of a product, the adjusting mechanism and the important optical component are assembled and then fixed through a support and then installed on the shell, so that the problem of light adjustment caused by shell deformation can be solved, and the adjusting device can be directly installed on the shell for the optical component with relatively smaller total mass.

Rotate thumb gear 6 during manual regulation, drive transmission gear ring 3 and rotate, adjust support 4 nestification in transmission gear ring 3, when transmission gear ring 3 rotated, drive and adjust support 4 and be axial motion along set screw 7. When the electric motor 1 is adjusted, the motor ball head 1.1 on the electric motor 1 moves back and forth in a telescopic manner to drive the adjusting bracket 4 to slide back and forth in the transmission gear ring 3, so that the fixing screw 7 can move axially along the adjusting bracket 4.

The manual adjustment is realized by rotating the thumb gear 6, so that the transmission gear ring 3 can rotate circularly in the fixed support 2 and drive the adjusting slide block 4 to rotate, and the adjusting screw 8 which is in threaded fit with the adjusting support 4 rotates along the X axial direction and realizes displacement movement along the X axial direction through the rotation of the adjusting slide block 4; the electric adjustment is realized by fixing the motor 1 on the fixing support 2, most preferably fixing the motor 1 through a screw, installing a ball head 1.1 on the motor 1 and a ball socket 4.1 on the adjusting support 4 together, and driving the adjusting support 4 and the adjusting screw 8 to slide in the transmission gear ring 3 when the ball head of the motor 1 extends and retracts along the X-axis.

The coaxial adjustment technique in this embodiment is to allow manual adjustment and electric adjustment, and the displacement in the X-axis direction is achieved by the same mechanism, i.e., by rotation or sliding of the adjustment bracket 4 and the adjustment screw 8. Thus, the coaxial adjustment is achieved. The transmission gear ring 3 is made of POM. Has good self-lubricating property, creep resistance and fatigue resistance. The adjusting bracket 4 is made of glass fiber added with 10-40 parts of PBT. The adjusting screw 8 is made of glass fiber added with 10-40 parts of PA 66. In practical application, according to different requirements of customers on adjusting force, the material can also be PA66 directly, or 20-40 glass fiber added with PBT, or a metal material. The fixing support 2 is made of glass fiber added with 10-40 parts of PBT. The thumb gear 6 is a common part in a car lamp dimming structure, is used by many production enterprises, and is mainly made of 20-40 glass fibers added by PA 66. The coaxial adjusting device has the characteristics of eliminating the offset of a cut-off line caused by axial component force generated in the adjusting process of a non-coaxial adjusting system, compacting the structure, reducing the number of coupling points and reducing the torque during adjusting, can solve the problem of over-rotating short plates in the known coaxial adjusting, and is a novel design concept based on the currently known coaxial adjusting technology.