JPS6350723Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a novel vehicle headlamp device. Specifically, the present invention is capable of adjusting the optical axis angle with respect to the vehicle body, and is capable of adjusting the optical axis angle with respect to the vehicle body when the vehicle is completed, that is, for initial aiming. The present invention provides an improvement regarding a vehicle headlamp device which is equipped with a so-called leveling mechanism for adjusting the optical axis angle in accordance with the load applied to the vehicle body and its position after the vehicle is completed.

That is, the present invention provides a novel vehicle headlamp device that has a simple structure by sharing one main component at the adjustment point where the initial aiming mechanism and leveling mechanism are installed together. In a vehicle headlamp device in which the irradiation direction of the headlight can be changed with respect to the vehicle body, the tilting member 8 for changing the irradiation direction by changing the mounting angle with respect to the vehicle body is attached to the fixed side member 1. connected by one rotation fulcrum mechanism and two interval adjustment mechanisms,
One of the interval adjustment mechanisms includes a nut 19 supported by the tilting member 8, and an operating rod 18 rotatably supported by the stationary member 1 and whose tip (on the side opposite to the adjustment end) is screwed into the nut 19. Another interval adjustment mechanism includes a rod 28 that connects the movable part 38 of the leveling drive unit 36, which includes a movable part 38 that is moved back and forth by automatic or manual remote control, and the tilting member 8. The tip of the connecting rod 28 is screwed into a nut 32 supported by the tilting member 8, and the rear end of the connecting rod 28 is connected to the movable portion 38.
A pinion gear 34 that is slightly longer in the axial direction is provided integrally or integrally with the intermediate portion of the connecting rod 28, and a bracket is provided on the rear surface of the fixed side member 1. 35 is fixedly installed, and an operating rod 46 extends in a direction substantially perpendicular to the connecting rod 28.
is rotatably supported on the bracket 35, and a crown gear 47 fixedly provided at the tip (on the side opposite to the adjustment end) of the operating rod 46 meshes with the pinion gear 34, and the adjustment end of the operating rod 46 It is characterized in that it is located behind the fixed side member 1.

The details of the vehicle headlamp device according to the present invention will be explained below with reference to the accompanying drawings.

Reference numeral 1 denotes a body made of synthetic resin, with a large opening at the front and an insertion hole 2 provided at the center of the rear. Reference numeral 4 denotes a lens, which has a low trapezoidal shape that protrudes forward, and a flange 5 with a small protrusion formed at the rear opening edge is connected to an installation groove 3 provided at the opening edge of the body 1 via a gasket 6. will be placed on. Then, the rear surface of the installation groove 3 of the body 1 and the front surface of the flange 5 of the lens 4 are engaged with a metal clip 7 having a C-shaped cross section, and the lens 4 is fixed to the body 1. A metal reflecting mirror 8 is arranged within a lamp space defined by the body 1 and the lens 4. The reflecting mirror 8 is connected to the body 1 at three points. In other words, at point A in the upper left when viewed from the front view (Fig. 1), a rotation fulcrum mechanism is used to move vertically from point A to point B, which is close to the right end on a line extending horizontally from point A. They are connected to each other by an aiming mechanism and a leveling mechanism at a point C near the lower end of a line extending to .

The rotation fulcrum mechanism 9 at point A is constituted by a spherical protrusion 10 protruding from the body 1 and a spherical recess 11 formed in the reflecting mirror 8. Numeral 12 is a rod having a spherical protrusion 10 at one end and a threaded groove 13 at the other end, and the threaded groove 13 is screwed onto a boss 14 formed on the body 1. Fixed. Reference numeral 15 is a synthetic resin block having a spherical recess 11 opening at the rear, and this block 15 is fixed to a bracket 16 fixed to the rear surface of the opening edge of the reflecting mirror 8.
Furthermore, the spherical protrusion 10 of the rod 12 is fitted into the spherical recess 11 of this block 15, and a ball joint-like rotation fulcrum mechanism 9 is constructed here.

The aiming mechanism 17 at point B consists of an adjusting screw 18 rotatably supported on the body 1 and a nut 19 supported on the reflecting mirror 8. The nut 19 is formed of synthetic resin into a square block shape, and has a hole (not shown) penetrating the nut from front to back in the center thereof. An annular protrusion 20 is formed around the through hole on the rear surface of the nut 19.
is formed. Further, on both sides of the nut 19, there are engagement grooves 2 extending in a direction perpendicular to the axial direction of the hole.
1 is formed, and the two opposing surfaces constituting the engaging groove 21 are curved surfaces that are closest to each other at the center in the direction in which the groove 21 extends and are most distant from each other at both ends. Reference numeral 22 denotes a metal bracket, which is fixed to the rear surface of the opening edge of the reflector 8 by welding or the like, and has a support piece 22b bent at right angles from the rear end of the leg 22a extending rearward and toward the rotation fulcrum mechanism 9. It is formed in one piece. and,
The support piece 22b has a long groove-shaped engagement notch (not shown) that opens at its tip. By engaging both side edges of this engagement notch with the engagement groove 21 of the nut 19, the nut 19 can slide along the notch provided in the support piece 22b of the bracket 22. Supported by Reference numeral 23 designates an adjusting screw support portion formed at a location corresponding to the mounting position of the nut 19 on the lamp body 1, and is formed as a boss portion projecting forward. This screw support part 23
An insertion hole 24 is formed to pass through this back and forth. And Asia Sting Screw 1
A collar 25 is formed in the middle part of the adjusting screw 18, and the adjusting screw 18 is inserted from the rear into the insertion hole 24 formed in the support part 23 until the collar 25 comes into contact with the rear surface of the support part 23 of the body 1. , its tip is screwed into the hole of the nut 19. A compression coil spring 26 is inserted between the rear surface of the nut 19 and the screw support portion 23. At this time, the front end of the coil spring 26 is connected to the nut 1.
Since the coil spring 26 is fitted onto the annular protrusion 20 formed at 9 and the rear end is fitted onto the boss-shaped support 23, both ends of the coil spring 26 are stably positioned.

By operating the adjusting screw 18, the connection point of the reflecting mirror 8 with the adjusting screw 18 is displaced in the front-rear direction. That is, when the adjusting screw 18 is rotated so as to be screwed into the nut 19,
Since the adjusting screw 18 cannot be moved in the front-rear direction with respect to the body 1 (by the collar 25 and the spring 26), the nut 19 is better than the adjusting screw 18.
Therefore, the portion of the reflecting mirror 8 that holds the nut 19 is displaced backward. Similarly, when the adjusting screw 18 is unscrewed from the nut 19, the nut 1
9 moves forward, and therefore, the corresponding part of the reflecting mirror 8 is displaced forward.

Next, a composite adjustment mechanism 27 in which an aiming mechanism and a leveling mechanism are integrated at point C will be described.

Reference numeral 28 denotes a connecting rod having a threaded groove 29 formed in its front portion, and a sphere 30 integrally formed at its rear end. And, such a connecting rod 28 is connected to the body 1.
It is slidably inserted into a hole 31 formed in . 32 is a nut similar to the nut 19,
It is supported by a bracket 33 fixed to the reflecting mirror 8. The tip of the connecting rod 28 is connected to the nut 3.
2 is screwed together. Also, the body 1 of the connecting rod 28
There is a long pinion gear 34 on the part that protrudes rearward.
is fixed.

Reference numeral 35 denotes a bracket having a U-shaped side surface fixed to the rear surface of the body 1, and a leveling drive section 36 is attached to the rear surface. This leveling drive section 36 is of a hydraulic type. This leveling drive unit 36 includes a cylinder 37 and a piston 38, and is connected to an automatic or manual operation unit (not shown) via a hydraulic pipe 39, and responds to changes in the hydraulic pressure in the cylinder 37 due to the operation of the operation unit. The piston 38 moves forward or backward. A flange 40 is formed protruding from the outer circumferential wall of the cylinder 37, and the flange 40 is further formed in front of the flange 40.
Several protrusions 41 are formed at slight intervals. 42 is a mounting hole formed in the bracket 33, and this mounting hole 42 is provided with a notch 43 through which a protrusion 41 provided on the cylinder 37 passes. The leveling drive section 36 is inserted into the mounting hole 42 from the rear up to the flange 40, with a wave washer 44 formed of a plate-shaped spring material fitted onto the front side of the flange 40. At this time, the protrusion 41 passes through the notch 43 formed in the mounting hole 42 to the front side of the bracket 35. Therefore, if the leveling drive unit 36 is slightly rotated so that the protrusions 41 and the notches 43 are misaligned, the wave washer 44 can be moved to the flange 40.
and the rear surface of the bracket 35, so
The leveling drive 36 is securely attached to the bracket 35. A spherical recess 45 is formed at the front end of the piston 38 of the leveling drive section 36. The spherical body 30 formed at the rear end of the connecting rod 28 is fitted into this spherical recess 45, whereby the piston 38 of the leveling drive section 36 and the reflecting mirror 8 are connected via the connecting rod 28. Concatenated.

Reference numeral 46 denotes an operating rod that is rotatably supported on the upper part of the bracket 35, and a crown gear 47 is fixed to the tip of the operating rod. are engaged. Reference numeral 48 is a support made of synthetic resin, which has an insertion hole 49 in the center, and is fixed to the upper part of the bracket 35. The operating rod 46 is inserted into an insertion hole 49 of this support 48. A flange 50 is formed on the operating rod 46, and the operating rod 46 is rotated by the bracket 35 so that the upper and lower parts of the support body 48 are sandwiched between the flange 50 and a stop washer 51, which is also attached to the operating rod 46. Possibly supported.

In the vehicle headlamp device configured as described above, the reflecting mirror 8, which is the tilting member, is tilted in the following manner.

First, initial aiming is performed by operating the adjusting screw 18 or the operating rod 46.

Asian steering screw 18 at point B
When you operate , the part of the reflector 8 connected to the adjusting screw 18 is moved forward or backward, so the reflector 8 moves to the connection point at point A (the spherical recess and the spherical recess in the rotation fulcrum mechanism 9). 1
1) and the connection point at point C (the connection point between the nut 32 screwed to the connecting rod 28 in the compound adjustment mechanism 27 and the bracket 33 fixed to the reflector 8) as the axis. It will be tilted. Furthermore, when the operating rod 46 of the compound adjustment mechanism 27 at point C is operated, the pinion gear 34 provided on the connecting rod 28 is rotated by the crown gear 47 fixed to the tip thereof, so that the connecting rod 28
are rotated together. When the connecting rod 28 is rotated,
Depending on its direction of rotation, the connecting rod 28
screwed into or unscrewed from 2. Therefore, the nut 32 will move forward or backward along the connecting rod 28, and the reflector 8 will move between the connecting point at point A and the connecting point at point B (the nut 2
0 and the connecting point of the bracket 22).

Next, let's talk about leveling. When an operating section (not shown) of the leveling device is operated, the hydraulic pressure within the cylinder 37 of the leveling drive section 36 is changed, and the piston 38 is moved forward or backward. Therefore, since the connecting rod 28 connected to this piston 38 is moved in the front-back direction, the reflecting mirror 8 is tilted about the line connecting the connecting point at point A and the connecting point at point B. The Rukoto.

In addition, 52 is a flanged light bulb attached to a mounting hole 53 formed at the rear of the reflector 8, 54 is a rubber cover, and a base 56 of the light bulb 52 is fitted into a hole 55 provided in the center. The outer portion 57 is fitted onto the outer side of the rear insertion hole 2 of the body 1.

As is clear from the above description, in the vehicle headlight device of the present invention, the installation angle with respect to the vehicle body is A tilting member 8 for converting and changing the irradiation direction is connected to the fixed side member 1 by one rotation fulcrum mechanism and two interval adjustment mechanisms, and one of the interval adjustment mechanisms is supported by the tilting member 8. The nut 19 is rotatably supported by the fixed side member 1 and has a tip (on the side opposite to the adjustment end).
is provided with an operating rod 18 screwed into the nut 19, and the other part of the interval adjustment mechanism is a movable part 3 that is moved back and forth by automatic or manual remote control.
Said moving part 3 of the leveling drive 36 comprising 8
8 and the tilting member 8 are connected via a connecting rod 28,
The connecting rod 28 has its tip screwed into a nut 32 supported by the tilting member 8, and the rear end of the connecting rod 28 is connected to the tip of the movable portion 38 in a ball-and-socket shape. A slightly elongated pinion gear 34 is provided in the axial direction, and a bracket 35 is fixed to the rear surface of the stationary side member 1, and a bracket 35 is fixed to the rear surface of the fixed side member 1, and a pinion gear 34 is provided integrally or integrally with the pinion gear 34 in the axial direction. A crown gear 4 is fixedly provided at the tip of the operating rod 46 (on the side opposite to the adjustment end).
7 is meshed with the pinion gear 34, and the adjustment end of the operating rod 46 is located behind the fixed side member 1, so that a large part of the initial aiming and leveling is shared, and the structure is simplified. It becomes extremely simple.

In the above embodiment, the tilting member was a reflector, and the fixed side members were the lamp body and the vehicle body. However, the reflector may be fixed or integrated with the lamp body, and the lamp body may be tilted with respect to the vehicle body. It may also be configured as a tilting member.

[Brief explanation of the drawing]

1 to 4 show an example of the implementation of the vehicle headlamp device of the present invention, in which FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 1 is an enlarged sectional view taken along the - line in FIG. 1, and FIG. 4 is an exploded perspective view of the main parts. Explanation of symbols, 1... Fixed side member, 8... Tilting member, 18... Operating rod, 19... Nut, 28...
Connecting rod, 32... Nut, 34... Pinion gear, 35... Bracket, 36... Leveling drive section, 38... Moving part, 46... Operating rod, 47...
...Crown Gear.

Claims (1)

[Claim for Utility Model Registration] In a vehicle headlamp device in which the irradiation direction of the headlight can be changed with respect to the vehicle body, the tilting member 8 is fixed so that the mounting angle with respect to the vehicle body can be changed and the irradiation direction can be changed. It is connected to the side member 1 by one rotation fulcrum mechanism and two spacing adjustment mechanisms, and one of the spacing adjustment mechanisms is connected to a nut 19 supported by the tilting member 8 and rotatably supported by the fixed side member 1. At the same time, the tip (the side opposite to the adjustment end) is connected to the nut 19.
The other part of the interval adjustment mechanism is a moving part 38 that is moved back and forth by automatic or manual remote control.
said moving part 38 of the leveling drive 36 including
and the tilting member 8 are connected via a connecting rod 28, the leading end of the connecting rod 28 is screwed into a nut 32 supported by the tilting member 8, and the rear end of the connecting rod 28 is connected to the movable portion 38. A pinion gear 34 is connected to the tip end in a ball joint shape, and a pinion gear 34 that is slightly longer in the axial direction is provided integrally or integrally with the intermediate portion of the connecting rod 28, and a bracket 35 is provided on the rear surface of the fixed side member 1. An operating rod 46 extending in a direction substantially perpendicular to the connecting rod 28 is rotatably supported by the bracket 35, and is fixedly provided at the tip of the operating rod 46 (on the side opposite to the adjustment end). The crown gear 47 is connected to the pinion gear 3.
4, and the adjustment end of the operating rod 46 is located behind the fixed member 1.