KR101460629B1 - Back Light Direction Shifting Device for a Vehicle Head Lamp and Assembling Method thereof - Google Patents

Abstract

The present invention relates to a light direction shifting device for a vehicle headlight and a method for assembling the same. The light direction shifting device includes: a fixing bracket (3) installed at the front of a light source (21) of the vehicle headlight; a rotational shield (5) which controls a portion of light distribution irradiated from the light source (21) according to the rotation position through pivot-rotation; an actuator (7) which pivot-rotates the rotational shield (5) in operation to irradiate the entire portion of the light distribution; and a damper (9) which reduces impact resulting from the rotational shield (5). The damper (9) includes a damping sheet (41) protruding on the rim of the damper so that the damping sheet (41) can come in contact with the rotational shield (5); and a damping protrusion (43) protruding from the center of the damping sheet (41) so that the damping protrusion (43) can come in contact with the rotational shied (5) prior to the damping sheet (41). Accordingly, the vibration and the noise caused by the impact of the rotational shied cannot only be significantly reduced through the damper, but also light chatter of the light source can be reduced. Especially, the contact area of the damping sheet coming in contact with the rotational shield can be reduced, so that the buffer effect can be more improved. After the rotational shield is assembled with the fixing bracket, an assembly hole is bored in the fixing bracket to fix the fixing bracket to a vehicle body. Accordingly, the rotational shield of the fixing bracket can be installed at a right position.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light distribution direction switching device for a vehicle headlamp,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light distribution direction switching device for a vehicle headlamp, and a method for assembling the same, and more particularly to a light path switching device for switching a light irradiation mode of a headlamp to a downward light or an upward light To a light distribution direction switching device for a vehicle headlamp in which noises generated are suppressed and an assembling tolerance of parts for changing the light distribution direction is suppressed to suppress the light shaking phenomenon of the light distribution, and a method of assembling the device.

Generally, the headlamp, that is, the headlamp, is an illuminating light for illuminating the forward direction of the vehicle, and requires a brightness capable of identifying obstacles existing within a distance of 100 meters ahead at night.

These headlights are divided into a downward light that normally lights at night, and an upright light that lights up on a quiet road without a night light or a vehicle. In the past, the headlights were individually provided with an upward light and a downward light, respectively. However, since the light was irradiated through each of the reflectors and the lenses, two components were required to be installed.

In order to overcome such a problem, a headlamp apparatus having a light distribution direction switching device 101 shown in FIG. 1 has been proposed. The light-distribution-direction switching device 101 supplies the light to the lens portion only downward or upwardly and downwardly according to the operation of the rotation shield 105.

Specifically, as shown in FIG. 1, when the rotary shield 105 is rotated by the actuator and is opened, the upper end of the upward light distribution Investigate. When the headlamp is returned to the downward light mode, the rotating shield 105 returns to a state of being in close contact with the stationary bracket 103 by the restoring force of the actuator or the unillustrated torsion spring to shut off the upward light distribution.

At this time, the turning shield 105 is brought into close contact with the fixing bracket 103 by rotation to generate impact and noise, and further, the light source unit is vibrated to cause a light shaking phenomenon of the light distribution.

Thus, the shock absorbing rubber 109 is attached to the fixing bracket 103 to cushion the impact of the rotation shield 105. 1, since the contact surface of the conventional buffer rubber 109 with the pivotal shield 105 is flat, it is in close contact with the pivotal shield 105 in a surface contact state. Therefore, the pivotal shield 105 The vibration and noise are not effectively suppressed.

More specifically, the maximum vibration by the conventional buffer rubber 109 was measured at 9.69 cm as shown in FIG. 2, and the number of vibrations was measured four times. In addition, the maximum noise due to the conventional buffer rubber 109 was measured at 59.3 dB as shown in Fig.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-described problems of the related art headlamp light-distribution direction switching device, and has been proposed in order to change the direction of the light distribution from the light source to the reflector, And it is an object of the present invention to suppress the light shaking phenomenon of the light distribution due to the erroneous arrangement of the rotating shield by eliminating the assembly tolerance of the rotating shield assembled to the stationary bracket.

In order to achieve the above object, the present invention provides a vehicle headlamp comprising: a fixing bracket installed in front of a light source of a vehicle headlamp; A pivotal shield coupled to the stationary bracket so as to be pivotally rotatable, the pivotal shield interrupting a part of the light emitted from the light source according to the pivotal rotation position; An actuator connected to one end of the pivoting shield to rotate the pivoting shield in operation to irradiate the entire light distribution; And a damper inserted through the fixing bracket so as to abut against the rotating shield returning to the home position when the operation of the actuator is stopped, thereby alleviating an impact caused by the rotating shield, A damping sheet protruding in a circumferential direction on a rim portion so as to come in contact with the rotating shield completed; And a damping protrusion protruding from the center of the damping sheet to contact the pivoting shield before the damping sheet.

The damper may further include a damping pocket which is recessed in the opposite side of the damping protrusion of the body inserted into the fixing bracket so that the damping protrusion elastically retracts when the damping protrusion comes into contact with the pivoting shield.

Further, the damper is inserted in the circumferential direction between the damping sheet and the damping protrusion, and when the damping protrusion comes in contact with the pivot shield and retracts, the damper is retracted together with the damping protrusion so that the contact area And a damping groove which is adapted to reduce the damping force.

The apparatus may further include a pushing spring that is fitted on a pivot shaft for pivotally connecting the fixing bracket and the pivotal shield and presses the pivotal shield to one side so as to prevent the pivotal movement of the pivotal shaft on the pivot shaft.

The pivot shaft is pivotally coupled to the inner surface of the hinge ring so as to be interposed between the hinge ring of the pivot shaft and the pivot shaft, and a spring assembly hole is formed in the circumferential direction between the pivot shaft and the pivot shaft, And a shield bushing which is elastically supported against a bearing on which the pivot shaft is fixed by the pressing spring inserted into the spring assembly hole.

According to another aspect of the present invention, there is provided a method of assembling a vehicle headlamp light distribution direction changing apparatus, comprising: a fixing bracket preparing step of forming a fixing bracket having an actuator assembly and a pivot shaft bearing, except for a fastening hole for determining a position to be mounted in the lamp housing; A pivot shield forming step of forming a pivot shield having an optical pocket, a pivot axis hinge ring, and an actuator connection arm; A pivot shaft inserted into the hinge ring slidably formed in the hinge ring formed in the pivot shield preparation step is fixed to the bearing formed in the fixing bracket preparing step to pivotally connect the pivot shield to the fixed bracket, step; A punching hole for punching the fastening hole in the fixing bracket to which the pivoting shield is assembled in the pivoting shield assembly step; And an assembling finishing step of inserting a fastening member into the fastening hole drilled in the step of drilling the assembly, coupling the fastening bracket to the vehicle body, and pivotally connecting the push rod of the actuator to the actuator connection arm And a pivot shaft is interposed between the bearing and the hinge ring when the pivot shaft is fixed to the bearing in the pivot shaft assembling step so that the pivot shaft is pushed to one side, And a turning shield pressing step for turning the light source on and off.

A shield bush is fitted on the inner circumferential surface of the hinge ring so as to be interposed between the hinge ring and the pivot shaft of the pivot shield before the pushing spring is interposed between the bearing and the hinge ring in the pivotal shield pressing step, A shield bush assembling step of forming a spring assembling hole in a circumferential direction between the shield bush and the pivot shaft so that the shield bush is elastically supported by the pressing spring against the bearing by inserting the pressing spring into the spring assembling hole .

Preferably, the step of preparing the stationary bracket includes a step of machining the semi-finished product of the stationary bracket to bend the actuator assembly into the plate-like base material and bend the bearing to process the semi-finished product of the stationary bracket.

Preferably, the rotating shield preparation step includes a rotating shield half mold forming step of molding the semi-finished product of the rotating shield having the optical pocket, the hinge ring, and the connecting arm.

According to the light distribution direction switching device and the assembly method of the device of the present invention, the damping protrusions constituting the damper are elastically deformed to first shock the impact of the pivot shield, and then the damping sheet contacts the pivot shield, The vibration and noise due to the impact of the rotating shield can be significantly reduced and the light trembling of the light source can be reduced thereby improving the visibility of the nighttime operation and ensuring safe operation.

Particularly, since the reaction force of the damping sheet due to the impact of the rotating shield is attenuated by the damping pocket, the elastic deformation of the damping protrusion is smoothly performed, and the buffering effect of the rotating shield can be doubled. Furthermore, since the damping protrusion is elastically deformed and the damping groove is pushed into the damping sheet, the contact area of the damping sheet abutting against the rotating shield is reduced, thereby further increasing the buffering effect.

In addition, since the optical pocket is inclined and rotated together with the pivot shield, the light distribution from the light source is reflected in the downward light mode so as to be able to identify the road sign or the like. In the upward light mode, By reflecting the light, it becomes possible to perform functions such as a vehicle height and a tail lamp.

On the other hand, since the pivotal shield is pressed and fixed to one side of the pivot shaft by the pushing spring, the pivotal movement of the pivotal shield relative to the fixed bracket can be restrained, and after the pivotal shield is first assembled to the pivotal bracket, Since the assembling hole for fixing is drilled in the fixing bracket, it is possible to install the rotating shield in the correct position through the fixing bracket in a state in which all assembly tolerances accumulated in the process of assembling the rotating shield to the fixing bracket are neglected. Therefore, it is possible to fundamentally eliminate light leakage or light tremor due to the assembly tolerance, so that visibility by the headlight can be further improved during nighttime driving.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side sectional view showing a conventional light distribution direction switching device for a vehicle headlamp. Fig.
2 is a graph showing the occurrence of vibration due to the buffer rubber shown in Fig.
FIG. 3 is a graph showing noise generation by the buffer rubber shown in FIG. 1;
4 is a side cross-sectional view showing a light distribution direction switching device of a vehicle headlamp according to an embodiment of the present invention.
5 is a side cross-sectional view of the light distribution direction switching apparatus shown in Fig. 4, in which the pivot shield is pivoted and opened.
6 is a perspective view of the light distribution direction switching device shown in Figs. 4 and 5. Fig.
7 is a side cross-sectional view of the light distribution direction switching device showing the damper shown in Fig. 6 in detail.
8 is a partially enlarged side sectional view showing a state in which the damper and the pivotal shield of Fig. 7 are in contact with each other.
FIG. 9 is a partially enlarged side sectional view showing a state in which the damper and the rotating shield of FIG. 7 are completely closed; FIG.
10 is a partially enlarged cross-sectional view showing another embodiment of the damper shown in Fig.
11 is a front view of the light distribution direction switching device shown in Figs. 4 and 5. Fig.
FIG. 12 is a block diagram sequentially illustrating an assembling method of a vehicular headlamp light distribution direction switching device according to an embodiment of the present invention; FIG.
FIG. 13 is a graph showing vibration generation by a light distribution direction switching device according to an embodiment of the present invention. FIG.
FIG. 14 is a graph illustrating generation of noise by the light distribution direction switching device according to an embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light distribution direction switching device for a vehicle headlamp according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The light distribution direction switching device of the present invention includes a fixing bracket 3, a rotating shield 5, an actuator 7, and a damper 9 as shown in FIG. 4 to FIG. And further includes a compression spring (13) and a shield bush (15).

4 to 6, the fixing bracket 3 is a part of the body of the light distribution direction switching device 1, and switches the direction of the light distribution emitted from the headlamp light source 21 of the vehicle The light source 21 is installed vertically. At this time, the light source 21 is surrounded by the reflector 22. Accordingly, the light emitted from the light source 21 is reflected by the reflector 22 and irradiated to the lens 23 by the light distribution in the upper and lower directions. On the other hand, the fixing bracket 3 is not shown but is shielded by a connection housing connecting the lens 23 with the reflector 22 surrounding the light source 21. [

The rotating shield 5 is a means for interrupting a part of the light distribution emitted from the light source 21, and normally interrupts the upward part of the light distribution. To this end, the pivotal shield 5 is pivotally coupled to the fixed bracket 3, and the pivot shaft 27, which is fixed to the bearing 25 of the fixed bracket 3, 29 on the pivot shaft 27 in the sliding contact state. An actuator connection arm 31 is bent at both left and right ends of a lower portion of the pivot shaft 27 so as to be connected to the actuator 7 causing the rotation of the pivot to increase the blocking efficiency against upward light distribution, An optical pocket 33 embedded in the irradiation direction of the light distribution is formed at the upper center.

4 to 6, the optical pocket 33 is formed as an inclined surface and rotates together with the pivotal shield 5. When the reflector 22 (see FIG. 4) is in the downward light mode as shown in FIG. 4, And then irradiates the upper end of the lens 23 with the reflected light. Accordingly, the headlamp can easily identify the road sign or the traffic light by the optical pocket 33 even in the downward light mode. 5, the optical pocket 33 reflects external light radiated toward the pivoting shield 5, so that the optical pocket 33 can perform a function such as a tail lamp or a tail light without lighting the light source 21 do.

4, the rotating shield 5 generally keeps the original position in the closed state to block the upward light distribution to downward the irradiation direction of the headlight, and when the pivot rotates as shown in FIG. 5, So that the headlights are simultaneously irradiated up and down. At this time, the downward direction is referred to as a downward direction and the upward direction is referred to as an upward direction.

4 to 6, the actuator 7 is mounted on one side of the lower end of the fixing bracket 3, and the push rod 32 is connected to the connecting rod 5 And is connected to the lower left and right sides of the pivotal shield 5 through the arm 31 to pivot the pivotal shaft 5 about the pivot shaft 27. [ 4, when the actuator 7 is not operated, the actuator 7 blocks the upward portion of the light distribution so that only a part of the light source 21 is irradiated. In operation, as shown in Fig. 5, The entire upper and lower portions of the light distribution are irradiated.

At this time, the turning shield 5 is pressed by the torsion spring 11 mounted on the pivot shaft 27, as shown partly in FIGS. 4 to 6 and 11, And is brought into close contact with the back surface of the rotating shield 5 in a direction to resist pivot rotation of the rotating shield 5 so that the rotating shield 5 is quickly returned to its original position by the elastic restoring force when the operation of the actuator 7 is stopped, So that the turning shield 5 blocks the portion of the light distribution, that is, the upward portion, immediately.

As shown in Figs. 4 to 6, the damper 9 is a means for relieving an impact applied by the pivoting shield 5 that returns to the home position by the torsion spring 11 as described above. Is inserted through a corresponding portion of the fixing bracket 3 abutting against the rotating shield 5, and is preferably made of soft rubber.

6 to 9, the damper 9 has a basic structure including the damping sheet 41 and the damping protrusion 43 again, and the damping pocket 45 and the damping groove 47 .

6 to 9, the damping sheet 41 is a portion for seating the pivoting shield 5, and protrudes in a circumferential direction along the rim portion of the damper 9 By abutting the rotating shield 5 in place by the operation stop of the bar and the actuator 7, the contact shock and the noise are reduced. 6 to 9, the damping protrusion 43 is a portion for attenuating the contact shock of the pivoting shield 5 before the damping sheet 41, And protrudes out of the damping sheet 41 more than the damping sheet 41. Therefore, the damping protrusion 43 comes into contact with the pivoting shield 5 before the damping sheet 41 when it comes into contact with the pivoting shield 5, and after the contact is contracted as shown in Fig. 9 after the contact, Thereby attenuating the impact caused by the impact. The shock of the rotating shield 5 applied to the damper 9 is secondarily overlapped and damped by the damping sheet 41 primarily by the damping protrusion 43. [

6 to 9, the damping protrusions 43 and the damping protrusions 54 to be described below are attached to the damping pockets 45, The damping protrusions 43 are formed on the inner side of the body 49 of the damper 9 to be inserted into the damping protrusions 43 in a concave manner. Thus, the damping pocket 45 keeps the damping groove 54 sufficiently thin so that the damping protrusion 43 abutting the pivoting shield 5 can retract with sufficient elasticity.

The damping groove 54 is a portion for reducing the contact area between the damper 9 and the damping sheet 41, which is in contact with the damper 9, The damping sheet 41 and the damping protrusion 43 are formed in a circumferential direction. 9, the damping groove 54 is retracted together with the damping protrusion 43 when the damping protrusion 43 returns to the original position so that the damping groove 5 is in contact with the damping sheet 41 And at the same time, the thickness of the peripheral portion of the damping protrusion 43 is reduced to increase the elasticity of the damping protrusion 43.

As shown in FIG. 10, the damping sheet 41 may have a protrusion 51 of an embossing shape protruding from the vertex portion protruding outermost. Therefore, by making the point contact with the contact projection 51 when the pivotal shield 5 collides, the area of the first contact of the pivotal shield 5 and the damper 9 can be further reduced to reduce the impact caused by the pivotal shield 5 So that it can be further relaxed.

As shown in FIG. 10, the damping protrusion 43 can also double-buffer the impact of the rotating shield 5 by protruding auxiliary protrusions 53 at apexes protruding outermost. On the contrary, the damping protrusion 43 can be formed with the damping groove 54 at the apex portion thereof. Therefore, the damping protrusion 43 is weakened in rigidity due to the damping groove 54, so that the elastic deformation can be smoothly performed more smoothly, and the shock caused by the pivoting shield 5 can be more effectively mitigated.

In addition, the damping groove 54 may be provided with reinforcing ribs 55 along the center of the radiation, as shown in FIG. Accordingly, since the damping groove 54 reinforces the rigidity against the impact of the rotating shield 5, the depth and diameter of the damping groove 54 can be further increased. Therefore, the contact area with the rotating shield 5 is further reduced, Thereby further reducing the noise.

The pushing spring 13 is a means for preventing the pivot shaft 5 from swinging along the pivot shaft 27 by pressing the pivot shaft 27 to one side of the pivot shaft 27, The hinge ring 29 of the pivotal shield 5 which is fitted on the pivot shaft 27 of the pivotal shield 5 pivotally connected to the pivot shaft 27, Is interposed between the bearings (25) of the stationary bracket (3) which is press-fitted and fixed. The pressing spring 13 is supported on the side surface of the bearing 25 at one end thereof and presses the hinge ring 29 which is in contact with the other end so that the turning shield 5 can slide along the pivot shaft 27, So that the swinging of the pivot shaft 5 along the pivot shaft 27 is prevented.

The shield bush 15 is a means for ensuring a wider width between the hinge ring 29 and the bearing 25 in which the pressing spring 13 is interposed as described above. (27) and the hinge ring (29). That is, the shield bush 15 includes a pivot shaft 27 fixed to the bearing 25 of the fixed bracket 3 and a hinge ring 29 of the pivotal shield 5 pivotally coupled to the pivot shaft 27. [ And is fitted on the inner circumferential surface of the hinge ring 29 and operates integrally with the hinge ring 29. Further, the shield bush 15 receives the urging spring 13 by forming a hollow cylindrical spring assembly 35 in the circumferential direction between the shield bush 15 and the pivot shaft 27. The pressing spring 13 inserted into the spring assembly hole 35 is resiliently supported against the bearing 25 on which the pivot shaft 27 is fixed as described above and the shield bush 15, The hinge ring 29 and the turning shield 5 are pressed against the bearing 25. At this time, it is preferable that the pressing spring 13 can be seated against the bearing 25 via the washer 37 between the bearing 25 and the pressing spring 13.

The operation of the vehicular headlamp light distribution direction switching device and the method of assembling the switching device according to the preferred embodiment of the present invention will now be described.

First, in the light distribution direction switching device 1 of the present invention, the opening of the reflector 22 is closed by the turning shield 5 in an unoperated state during normal operation in which the headlamp is kept downward. Therefore, the turning shield 5 blocks the upward light distribution of the light source 21 and executes the downward light mode by the downward light distribution.

However, when there is no nighttime illumination and the visual field is bad, the light distribution direction switching device 1 switches the headlamps to the upward light mode. As shown in Fig. 5, the actuator 7 is operated to move the push rod 32 Retreat. As a result, the connecting arm 31 is pulled back and the pivoting shield 5 pivots about the pivot shaft 27 in the counter-clockwise direction in the figure. Therefore, the opening of the reflector 22 is completely opened, and the upward light distribution as well as the downward light distribution is illuminated through the lens 23 to perform the upward light mode.

Subsequently, in order to switch the illumination lamp again to the downward light mode, the operation of the actuator 7 is stopped to return the rotation shield 5 to its original position, as shown in Fig. At this time, the rotating shield (5) is returned to its initial position by the restoring force of the torsion spring (11).

At this time, as shown in FIG. 8, the damper 9 is first elastically deformed by the damping protrusion 43 in contact with the pivoting shield 5, thereby first shocking the shock of the pivoting shield 5, The damping sheet 41 makes contact with the pivoting shield 5 to thereby secondarily shock the pivoting shield 5. At this time, since the damping groove 54 is further pushed inward along the damping protrusion 43, the contact area between the damping sheet 41 and the pivoting shield 5 is reduced to reduce impact or vibration due to contact, . That is, the maximum vibration by the damper 9 of the present invention was measured at 7.76 kPa as shown in Fig. 13, and the vibration frequency was measured twice. In addition, the maximum noise by the damper 9 of the present invention was measured at 52.3 dB as shown in Fig.

When assembling the light distribution direction switching device 1 according to the method of assembling the vehicle headlamp light distribution direction switching device according to an embodiment of the present invention, the following steps of preparing the fixed bracket S10, the turning shield preparation step The assembling step S30 and the assembling finishing step S50 are performed. The assembling step S30 includes assembling the shield bushing step S60 and the rotating shield pressing step S60, (S70).

Here, the fixing bracket preparation step S10 is a step of manufacturing the fixing bracket 3 as an independent separate component, and the plate-like base metal material is cut to produce a plate-like semi-finished product, as shown in Fig. Then, in the fixed bracket semi-finished product processing step S11, various parts necessary for assembling the light distribution direction switching device 1 are formed on the semi-finished product, or the semi-finished product is bent in a form suitable for the assembly to form the fixing bracket 3 do. At this time, in the semi-finished product, the actuator fastening hole 34 is drilled or the pivot shaft bearing 25 is bent. However, the fastening holes 39 for mounting the fastening bracket 3 to the outer frame, such as the lamp housing, are delayed until the rotation shield 5 is assembled to the fastening bracket 3.

The rotating shield preparation step S20 is a step of preparing the rotating shield 5 separately from the preparation of the fixed bracket 3 in the above step S10 as shown in Fig. 12, The optical pockets 33 are formed at the center upper end of the back surface of the body of the pivot shield 5 in the pivot shield half-finished product forming step S21, the pivot axis hinge ring 29 is provided at the rear center, A semi-finished product in which the actuator connecting arms 31 are formed at the left and right ends, respectively, is formed by die casting or the like.

The assembling step S30 of the pivoting shield assembly may include assembling the pivoting shield 5 prepared in the pivoting shield preparing step S20 and the fixing bracket 3 prepared in the upper fixing bracket preparing step S10 as shown in Fig. The pivot shaft 27 is first inserted into the hinge ring 29 of the pivot shield 5 formed in the pivot shield preparation step S20. At this time, since the pivot shaft 27 and the inner circumferential surfaces of the hinge ring 29 are in sliding contact, the hinge ring 29 is not only rotatable about the pivot shaft 27, It is also possible to move. Then, the pivot shaft 27 is fixed to the bearing 25 of the fixing bracket 3 formed in the fixing bracket preparing step S10. The turning shield 5 is engaged with the fixing bracket 3 so as to be able to pivot around the pivot shaft 27 fitted to the hinge ring 29. [

12, the pivoting shield pressing step S70 further includes a pivoting shield pressing step S70 and a shield bushing mounting step S60. The pivoting shield pressing step S70 may be performed as described above So that the hinge ring 29 is pressed against the bearing 25 in fixing the pivot shaft 27 to the bearing 25 so that when the pivot shaft 27 is fixed to the bearing 25, ) And the hinge ring (29). As a result, the pivotal shield 5 is urged toward the opposite side of the bearing 25 by the urging spring 13, so that the pivotal movement of the pivotal shaft 27 in the axial direction is prevented.

The shield bush assembling step S60 is a step of inserting the shield bush 15 between the hinge ring 29 of the rotary shield 5 and the pivot shaft 27. In the upper rotary shield pressing step S70, A space for inserting the pressing spring 13 between the hinge ring 25 and the hinge ring 29 is secured through the shield bush 15.

The shield bush 15 is fitted on the inner circumferential surface of the hinge ring 29 before the hinge ring 29 of the pivot shaft 5 is inserted on the pivot shaft 27 and the hinge ring 29 and the pivot shaft 27 . 11, the spring bush 15 forms a spring attaching hole 35 in the circumferential direction with respect to the pivot shaft 27, and the urging spring 13 inserted into the spring attaching hole 35 Is compressed between the bearing (25) and the shield bush (15) so that the rotating shield (5) is elastically supported against the bearing (25).

As shown in FIG. 12, the assembling hole drilling step S40 is a step of drilling a fastening hole 39 in the fixing bracket 3 in which the rotating shield 5 is assembled in the upper rotating shield assembling step S30, The cumulative tolerance between the components generated in the process of assembling the pivotal shield 5 to the fixed bracket 3 is ignored and the width of the pivotal hole 39 is determined based on the assembled pivotal shield 5 as shown in Fig. 2d and height h are determined and the fastening holes 39 are drilled on the fastening bracket 3. At this time, since the pivotal shield 5 is pushed to one side by the urging spring 13 to prevent the right-left pivotal movement, the dimensional error due to the pivotal movement of the pivotal shield 5 can be prevented.

Finally, as shown in FIG. 12, the assembly finishing step S50 is a step of attaching the fixing bracket 3 completed to the drilling of the fastening hole 39 to the vehicle body in the step of drilling the upper assembly hole S40, A fixing member such as a bolt is inserted into the hole 39 to fix the fixing bracket 3 to the outer frame such as the lamp housing. 6, the push rod 32 of the actuator 7 is pivotably connected to the actuator connection arm 31 of the pivotal shield 5 by fitting the pivot rod 34, and the actuator 7 ) And the damper (9) to the fixing bracket (3).

1: light distribution direction switching device 3: fixing bracket
5: Rotating shield 7: Actuator
9: damper 11: torsion spring
13: compression spring 15: shield bush
21: light source 23: lens
25: Bearing 27: Pivot axis
29: hinge ring 31: connecting arm
33: optical pocket 41: damping sheet
43: damping projection 45: damping pocket
47: damping groove 51:
53: auxiliary protrusion 55: reinforcing rib

Claims (9)

A fixing bracket 3 installed in front of the light source 21 of the vehicle headlamp;
A pivotal shield 5 pivotally connected to the fixing bracket 3 to intermittently control a part of the light emitted from the light source 21 according to a pivotal rotation position;
An actuator (7) connected to one end of the pivoting shield (5) to rotate the pivoting shield (5) in operation to cause the entire light distribution to be irradiated; And
A damper (5) inserted through the fixing bracket (3) so as to come in contact with the rotating shield (5) returning to the home position when the operation of the actuator (7) 9)
The damper (9)
A damping sheet (41) protruding in a circumferential direction at a rim portion so as to abut against the return shield (5) which has been completely returned; And
And a damping protrusion (43) protruding from the center of the damping sheet (41) so as to be in contact with the pivoting shield (5) before the damping sheet (41)
The damper 9 is recessed in the opposite side of the damping protrusion 43 of the body 49 inserted in the fixing bracket 3 so that the damping protrusion 43 abuts on the pivoting shield 5 And a damping pocket (45) for allowing the elastic member
The damper 9 is inserted in the circumferential direction between the damping sheet 41 and the damping protrusion 43 so that the damping protrusion 43 retreats together with the pivoting shield 5 when the damping protrusion 43 is retracted , And a damping groove (54) adapted to reduce an abutting area of the return shield (5) returned to the home position and the damper (9). delete delete A fixing bracket 3 installed in front of the light source 21 of the vehicle headlamp;
A pivotal shield 5 pivotally connected to the fixing bracket 3 to intermittently control a part of the light emitted from the light source 21 according to a pivotal rotation position;
An actuator (7) connected to one end of the pivoting shield (5) to rotate the pivoting shield (5) in operation to cause the entire light distribution to be irradiated; And
A damper (5) inserted through the fixing bracket (3) so as to come in contact with the rotating shield (5) returning to the home position when the operation of the actuator (7) 9)
Is fitted on a pivot shaft (27) for pivotally connecting the fixing bracket (3) and the pivotal shield (5), thereby pressing the pivotal shield (5) And a pressing spring (13) for preventing the swinging of the light emitting diodes of the vehicle headlamp. The method of claim 4,
Is fitted on the inner circumferential surface of the hinge ring (29) so as to be interposed between the pivot shaft (27) and the hinge ring (29) of the pivotal shield (5) pivotally connected to the pivot shaft (27) A spring attaching hole 35 is formed in a circumferential direction between the pivot shaft 27 and the bearing 25 to which the pivot shaft 27 is fixed by the urging spring 13 inserted into the spring attaching hole 35, Further comprising a shield bush (15) elastically supported against the light shielding member (12). A fixing bracket preparing step (S10) of forming a fixing bracket (3) so as to have an actuator fastening hole (34) and a pivot bearing (25), except for a fastening hole (39) for determining a position to be mounted in the lamp housing;
(S20) for forming a pivotal shield (5) having an optical pocket (33), a pivotal axis hinge ring (29), and an actuator connection arm (31);
The pivot shaft 27 slidably inserted into the hinge ring 29 formed in the rotating shield preparing step S20 is fixed to the bearing 25 formed in the fixing bracket preparing step S10, A turning shield assembling step (S30) for pivotally connecting the turning shield (5) to the fixing bracket (3);
(S40) of piercing the fastening hole (39) in the fixing bracket (3) in which the pivotal shield (5) is assembled in the pivotal shield assembling step (S30); And
The fixing bracket 3 is coupled to the vehicle body by fastening the fastening member to the fastening hole 39 drilled in the assembling hole drilling step S40 and the push rod 32 of the actuator 7 is fastened to the actuator connecting arm 31), wherein the assembly finishing step (S50) comprises:
When the pivot shaft 27 is fixed to the bearing 25 in the pivotal shield assembling step S30, a pressing spring 13 is interposed between the bearing 25 and the hinge ring 29, Further comprising a turning shield pressing step (S70) for preventing the pivotal movement of the turning shield (5) on the pivot shaft (27) by pushing the pivot shaft (5) . The method of claim 6,
The hinge ring 29 of the pivot shield 5 and the pivot shaft 29 of the pivot shield 5 are pushed in the pivot axis direction before the pushing spring 13 is interposed between the bearing 25 and the hinge ring 29 in the pivot shield pressing step S70. A shield bushing 15 is fitted on the inner circumferential surface of the hinge ring 29 so as to be interposed between the shield bush 15 and the pivot shaft 27 and a spring attaching hole 35 is formed in the circumferential direction between the shield bush 15 and the pivot shaft 27 The shield bush 15 is elastically supported by the pressing spring 13 against the bearing 25 by inserting the pressing spring 13 into the spring assembly 35. [ (S60). ≪ Desc / Clms Page number 20 > The method according to claim 6 or 7,
The fixing bracket preparing step S10 includes a fixing bracket semi-finished product manufacturing step S11 for boring the actuator fastening holes 34 in the plate-like base material, bending the bearing 25 to process the semi-finished product of the fixing bracket 3, Wherein the light emitting direction of the vehicle headlamp is set to a predetermined angle. The method according to claim 6 or 7,
The rotating shield preparation step S20 includes a rotating shield half mold forming step S21 for molding the semi-finished product of the rotating shield 5 having the optical pocket 33, the hinge ring 29 and the connecting arm 31 ) Of the vehicle headlamp light distribution direction switching device.

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