Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
  • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
  • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
  • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
  • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
  • B60Q1/0683—Adjustable by rotation of a screw

Definitions

• the invention relates to a construction for an adjustment mechanism for car headlights, especially the individual headlight components.
• Each headlight must meet the lateral adjustment and height adjustment requirements of the reflectors (or xenon / LED modules), based on the customer specification (automotive factory specification). It is about the manual position adjustment of the inner components. This customer specification adds to the legal requirements that need to be met.
• the adjustment of the internal components is currently solved by the movable riders whose position is given by the rotation of the adjusting screws (usually via a bevel gear). This principle makes it possible to set the correct position, for example in the production or in the technical control.
• the horizontal screw rotates thanks to the rotation of the bevel gear.
• the horizontal screw derives the translation of the tabs that determine the modulus reflector.
• the adjustment systems (the riders and the adjusting screws) must allow the movement, on the other hand they must also meet the requirement for maximum rigidity, because of the requirement for the stability of the cut-off at 25 meters distance. If there are tolerances in the system, then it will affect the vibration of the light distribution on the road. The permitted amplitude of the vibration is about 0.2% depending on the manufacturer.
• the mechanical load, the dynamic load (the vibration, the alien awakening), the center of gravity position of the modules / reflectors and the position of the clamping points generate the reaction forces or stress states in materials. These reactions stress the tension points of the riders, with the riders representing the interface between the reflectors / modules (the moving part) and the headlight body (the fixed part).
• the reaction forces between the reflectors / modules and the housing are transmitted via the tabs.
• the modules / reflectors weigh on average 750 g.
• the acceleration can be up to 10G.
• the known system, used for the position adjustment with the said components and the particular guide in the headlight body very robust elements which receive the grooves, which serve to guide the rider, which is inserted into the guide groove.
• the rider position is then determined by the rotation of the set screw.
• the translation of the riders takes place with the help of metric or other threads.
• a solution is necessary in which primarily the axial and radial system tolerance (of the rider and the set screw), exact design of the grooves, and a total high rigidity u , ä ..
• the riders have sprung elements for the tolerance elimination, too soft elastic components then have an influence on the vibration of the cut-off.
• the problem with the oscillations of the headlamp is solved by a double-bearing to increase the rigidity.
• This solution requires additional components and screws.
• the cited defects are eliminated by the adjustment mechanism according to the invention for car headlights.
• the invention consists in that a frame, as an inseparable whole, consists of a fixed frame part, which is connected to a movable frame part, wherein the fixed and the movable frame part are connected by means of two kinematic components, each in the connection point to the fixed and the movable frame part are diluted.
• the fixed frame part has a portion to which the kinematic components are connected and a portion for receiving the adjusting screw, wherein the two portions are at an angle to each other.
• the adjusting screw In the kinematic component, which is arranged closer to the fixed frame part, there is a passage in which the adjusting screw can be arranged.
• On the movable frame part is located between the two kinematic components a threaded bushing for the set screw
• the set screw is inserted into the receptacle on the fixed frame part, in the passage of the kinetic component and the threaded bush, the screw has a collar which is in the groove of the fixed Frame part is rotatably mounted.
• the adjusting screw is supported in the fixed frame part, so that the thread of the adjusting screw, which runs in the threaded bushing of the movable frame part, displaces the movable frame part in the direction of the screw axis when the adjusting screw is turned.
• the frame is a one-piece component consisting of the fixed frame part, the movable frame part and the kinetic components, wherein the frame may be made of an elastic thermoplastic material.
• the fixed frame part and the movable frame part as well as the kinematic components are made locally thinner at the transitions so that in each case a film joint is formed.
• the pivot axis associated with the film hinges is perpendicular to the direction of movement of the movable frame member.
• the geometrical design of the dilution corresponds to the condition of the opposite sides, horizontal and vertical. The horizontal and vertical sides are perpendicular to each other. In this way, a parallelogram mechanism with four joints is created.
• the elastic thermoplastic material of the frame also contributes to this. If the resulting parallelogram has different frame length, the kinematics are used to compensate for the movement from the end point to the specific requirements.
• the advantage of the device is the fixed frame and also the limitation of its axial play. It is not necessary as in the prior art to adjust the position of the rider and the set screw, as well as a precise design of the grooves and their adjustment, in particular the axial play of the system.
• FIG. 1 A practical example of the headlamp adjustment mechanism according to the invention is shown in FIG.
• the frame is shown, as an inseparable whole, formed by the fixed frame part 1 and the movable frame part 2, which are connected by means of two kinematic components 3 which are thinned in the connection point, that is to say as a film hinge.
• the groove 6 of the fixed frame part is formed in the fixed frame part I, in the kinematic component 3, the closer to the fixed frame part. 1 is set, the implementation 7 of the kinematic component is made.
• the threaded bushing 5 which is located on the movable frame part is arranged between the two kinematic components 3.
• the adjusting screw 4 is inserted in the threaded bushing 5 and in the groove 6 of the fixed frame part. Via a bevel gear 8, the adjusting screw 4 is driven and thus the movable frame part is adjusted ..
• the kinematic components (3) have the same length and the distance between them is constant over the entire length.
• the fixed frame part 1 ⁇ and the movable frame part 2 and the two kinematic components 3, which together form the entire frame, consist of a thermoplastic material.
• the dilution between the kinematic components 3 in the connection point to the two frame parts is 4 mm 2 in this case.
• the horizontal path that the movable frame part can travel based on the principle of the parallelogram is in the direction of the axis of the adjusting screw 4, plus / minus 5 mm.
• the sliding pendulum movement creates a height offset of 0.05mm.
• the local dilutions provide the kinematic mechanism with four joints for connection to the four solid components, with individual components always being sections.
• the connecting lines of the frame perform the uniform rotary motion on the dilution axis, the latter then performs the curved movement-the principle of the parallelogram.
• the comparison to the movement on the parallelogram principle comes from the lengths of the individual components, when both kinematic components have the same length and the distance is constant between them.
• the movable frame part 2 is guided by means of the adjusting screw 4.
• the headlamp adjustment mechanism according to the invention can be used with both vertical and horizontal headlamp adjustments, modules from the subframe and other devices.
• On the fixed frame can also be used as an adjusting element, a motor.
• the position of the fixed frame part is not limited within the headlamp body and the frame can be set any position within the Stell away. Basically it is possible to use this principle for every controlled movement. LIST OF REFERENCE NUMBERS

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62985858

Family Applications (1)

Country Status (3)

Citations (6)

Family Cites Families (3)

• 2017
  • 2017-05-23 CZ CZ2017-290A patent/CZ307447B6/cs not_active IP Right Cessation
• 2018
  • 2018-05-23 WO PCT/CZ2018/000021 patent/WO2018215001A1/de not_active Ceased
  • 2018-05-23 EP EP18743669.6A patent/EP3645339A1/de not_active Withdrawn

Patent Citations (6)

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