JPS6115524Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a headlamp for a vehicle. Specifically, the present invention relates to a vehicle front lamp in which a reflector is tiltably connected to a lamp body, and a so-called leveling operation is performed in which the reflector is tilted with respect to the lamp body by automatic or manual remote control. To provide a lighting device in which a leveling drive part can be attached after a reflecting mirror is placed in a space limited by a lamp body and a lens.

The headlights of a vehicle, such as a car, must be able to illuminate the road ahead well and must not dazzle oncoming drivers or pedestrians. If the projection angle of the headlight is too upward, it can illuminate the road ahead far away, but it is dangerous because it will dazzle oncoming drivers and pedestrians. Also, if the illumination angle is too downward, it will not emit dazzling light to oncoming drivers or pedestrians, but it will not be able to illuminate far ahead of the road, which is also dangerous. . Therefore, it is necessary for the irradiation angle of the automobile headlight to fall within the correct range. However, in an automobile, the vehicle and the vehicle body are connected through a suspension system, so the angle of the vehicle body with respect to the road surface changes depending on the load applied to the vehicle body and its position. This means that the irradiation angle of the headlight attached to the vehicle body is changed depending on the load applied to the vehicle body and its position. Therefore, recently, there has been an idea to install a so-called leveling device that changes the illumination angle of the headlight by automatic or manual remote control in accordance with changes in the load applied to the vehicle body and its position.

The present invention relates to a vehicle headlamp related to such a leveling device, and more specifically, a vehicle headlamp that changes the irradiation angle by tilting a reflector with respect to a lamp body fixed to the vehicle body. The purpose of this system is to enable the leveling drive unit to be fixed to the lamp body after the reflecting mirror is placed in the space defined by the lamp body and the lens. In a vehicle headlamp in which the front surface is covered with a lens and a reflector is tiltably disposed within a space limited by the lamp body and the lens, the − of the point connecting the reflector and the lamp body is referred to as a lamp. A connecting mechanism is formed through a leveling drive unit that is fixed to the body and includes a movable part that is moved back and forth by automatic or manual remote control, and the connecting mechanism includes a reflecting mirror or a member connected to the reflecting mirror. and the movable part of the leveling drive unit are connected via joint rods that are rotatable relative to each other, and the joint rods are slidably inserted into the lamp body, and the parts outside the lamp body are connected to the rear surface of the lamp body. It is characterized in that a flange is formed that comes into contact with the flange.

The details of the vehicle headlamp of the present invention will be explained below with reference to the illustrated embodiments.

Reference numeral 1 denotes a lamp body made of synthetic resin, which has a space 2 open at the front, and a light bulb insertion hole 3 formed in the center of the rear. A mounting edge 4 is formed at the front opening of the lamp body 1, and a groove 5 opened at the front surface is formed in the mounting edge 4. A gasket 6 is fitted into the groove 5. 7 is a lens made of transparent synthetic resin or glass;
An outwardly projecting installation edge 9 is integrally formed at the rear end of the side surface portion 8 extending rearward from the peripheral edge thereof. Then, this installation edge 9 is installed in the groove 5 of the lamp body 1 via the gasket 6. 10, 10, . . . are clips made of metal with spring elasticity and have a C-shaped cross section. One bent end of the clips 10, 10, . . . engages with the rear surface of the mounting edge 4 of the lamp body 1, and the other bent end engages with the front surface of the mounting edge 9 of the lens 7. Then, the lamp body 1 and the lens 7 are integrated so that the lens 7 covers the front opening of the lamp body 1.

Reference numeral 11 denotes a reflector supported tiltably relative to the lamp body 1, and is made of metal. At the center of the rear part, there is a flanged incandescent lamp 12.
is attached removably.

The reflector 11, seen in front view, has a ball joint in position A, an initial aiming mechanism in position B, and a rocking mechanism associated with another initial aiming mechanism and a leveling mechanism in position C. is supported by the lamp body 1.

First, the ball joint at point A will be described. Reference numeral 13 denotes a column, which projects integrally forward from a plate-shaped base 14, and has a sphere 15 at its front end.
are integrally formed. A screw shaft 16 integrally projects rearward from the base 14, and this screw shaft 16 is screwed into a mounting boss portion 17 formed on the lamp body 1. Reference numeral 18 denotes a receiver made of synthetic resin such as nylon resin, which is fixed to the rear end of the bracket 19 which is fixed to the rear surface of the peripheral edge of the reflector 11 by a welded part. It has a spherical recess 20 that is open.
Then, the sphere 15 of the support column 13 fixed to the lamp body 1 is fitted into the spherical recess 20 of the receiver 18 fixed to the reflecting mirror 11, thereby forming a ball joint.

Next, the initial aiming mechanism in section B will be described. 21 is a sleeve formed to protrude forward from the rear inner surface of the lamp body 1. Reference numeral 22 denotes an adjusting screw in which a thread groove 23 is formed except at the rear end, and a flange 24 is formed at a position slightly forward from the rear end. Further, an operating knob 25 is attached to the rear end of the adjusting screw 22. The adjusting screw 22 is inserted into the sleeve 21 from the back side thereof to the collar 24. Note that 26 is an O-ring interposed between the collar 24 and the lamp body 1. Reference numeral 27 is a nut made of synthetic resin such as nylon resin, and is attached to the rear end of a bracket 28 fixed to the rear surface of the peripheral edge of the reflecting mirror 11 by welding or the like. A tip end portion of the adjusting screw 22 having a thread groove 23 is screwed into this nut 27. 29 is a compression coil spring and the rear half is lamp body 1
The front end is fitted onto the sleeve 21 of the nut 2.
7 and is compressed between this nut 27 and the inner surface of the lamp body 1.

Next, the connection between the reflecting mirror 11 and the lamp body 1 at the C portion will be explained. 30 is a connecting body formed by bending a band-shaped metal, and a receiver 31 made of synthetic resin is fixed to the middle part of the connecting body.
A spherical recess 32 that opens forward is formed in the receiver 31 . 33 is a metal bracket fixed to the rear surface of the peripheral portion of the reflector 11 by welding or the like;
It protrudes backwards. This bracket 33 is provided with a mounting portion 34 formed by bending its rear end so as to be perpendicular to the axis of the reflecting mirror 11.
This mounting portion 34 has a protrusion 3 that protrudes rearward.
5 is fixed, and a sphere 36 is integrally formed at the rear end of the protrusion 35. This sphere 36 is attached to a receiver 31 fixed to the intermediate part of the connecting body 30.
The connecting body 30 is fitted into the spherical recess 32 of the mirror 11, thereby allowing the connecting body 30 to be swingably supported with respect to the reflecting mirror 11.

A nut 27 similar to the nut 37 described above is attached to one end of the connecting body 30. The nut 27 is made of synthetic resin and is shaped like a square block.
A hole 37 is formed through the center in the front and back directions. An annular protrusion 38 is formed around the through hole 37 on the rear surface of the nut 27. Furthermore, engagement grooves 39 are formed on both side surfaces of the nut 27 and extend in a direction perpendicular to the axial direction of the hole 37.
The two opposing surfaces 39a and 39b constituting the engagement groove 39 are curved so that they are closest to each other at the center in the direction in which the groove 39 extends and are most distant from each other at both ends. In this embodiment, the radii of the curved surfaces 39a and 39b are different, and the radius of the rear curved surface 39a is slightly smaller than the radius of the front curved surface 39b. An engagement notch 40 in the form of a long groove is formed at the end of the connecting body 30 to which the nut 27 is attached. By engaging the both side edges of the engagement notch 40 with the engagement grooves 39, 39 of the nut 27, the nut 27 can be attached to the other end of the connecting body 30 through the notch 40.
It is supported so that it can slide along 0.
Incidentally, the bracket 28 at the aforementioned point B is also formed with a notch similar to the engagement notch 40 shown here so as to extend in the horizontal direction.

Reference numeral 41 denotes a synthetic resin receiver fixed to the other end of the connecting body 30, in which a spherical recess 42 opening rearward is formed. Reference numeral 43 denotes an insertion hole formed in the lamp body 1, and is formed at a position corresponding to the receiver 41 of the connecting body 30. Reference numeral 44 denotes a bracket fixed to the rear surface of the lamp body 1 so as to cover the insertion hole 43, and a drive section 45 of a leveling device is attached to this bracket 44. In this embodiment, the leveling drive unit 45 is shown to be of a hydraulic type. This drive section 45 includes a cylinder 46 and a piston 47, and is connected to an automatic or manual operating section (not shown) via a hydraulic pipe 48, and responds to changes in the hydraulic pressure in the cylinder 46 due to the operation of the operating section. The piston 47 moves forward or backward. A flange 4 is provided on the outer peripheral wall of the cylinder 46.
9 is formed protrudingly, and furthermore, several protrusions 50 are formed in front of the flange 49 at a slight distance from the flange 49. 51 is a mounting hole formed in the bracket 44, and this mounting hole 51 has a notch 52 through which a protrusion 50 provided on the cylinder 46 passes.
is provided. The leveling drive section 45 is inserted into the mounting hole 51 from the rear up to the flange 49 with a wave washer 53 formed of a plate-shaped spring material fitted onto the front side of the flange 49. At this time, it passes through the notch 52 formed in the attachment hole 51 of the protrusion 50 to the front side of the bracket 44. Therefore, if the drive section 45 is slightly rotated so that the protrusion 50 and the notch 52 are misaligned, the wave washer 53 is compressed between the flange 49 and the rear surface of the bracket 44, so that the drive section 45 is securely attached to the bracket 44. A spherical recess 54 is formed at the front end of the piston 47 of the leveling drive section 45.

55 is the other end of the connecting body 30 and the leveling drive unit 4
This is a joint rod that connects between 5 and 5. Spheres 56 and 57 are integrally formed at the front and rear ends of the joint rod 55, respectively. Further, a flange 58 having an outer diameter larger than the diameter of the insertion hole 43 formed in the lamp body 1 is integrally formed near the rear end of the joint rod 55. and,
The joint rod 55 is inserted into the insertion hole 43 from the rear side of the lamp body 1, and the spherical body 56 formed at the front end is fitted into the spherical recess 42 of the receiver 41 attached to the other end of the connecting body 30. A sphere 57 at the rear end of the joint rod 55 is fitted into a spherical recess 54 formed in the piston 47 of the leveling drive section 45. As a result, the connecting body 30 and the leveling drive section 45 are connected via the joint rod 55. 59 is a rubber bushing, which is approximately in the shape of a hanging peg. A hole 60 is formed in the center of the rubber bushing 59, and the periphery of the hole 60 is slightly thickened. The periphery of this hole 60 is fitted into an annular groove 61 formed in the middle portion of the joint rod 55. Rubber butting 59
The outer periphery of the opening end is made slightly thick, and an annular groove 62 is formed on the outer surface of the thick part.
is fitted to the periphery of the insertion hole 43 of the lamp body 1.

A sleeve 63 projects forward from the rear inner surface of the lamp body 1, and is provided corresponding to one end of the connecting body 30. An adjusting screw 22 similar to that described above is inserted into this sleeve 63 from the back side thereof up to the collar 24. and,
The tip of the adjusting screw 22 is attached to the hole 3 of the nut 27 attached to one end of the connecting body 30.
Screwed into 7. Also, compression coil spring 2
9 is fitted onto the sleeve 63, and its front end is brought into contact with the rear surface of the nut 27, and is compressed between the nut 27 and the inner surface of the lamp body 1.

However, in such vehicle headlights,
Initial aiming and leveling are performed as follows.

First, initial aiming will be described. When tilting the reflecting mirror 11 in the left-right direction, the adjusting screw 22 at point B is operated. That is, the Asian steering screw 22 is
7, the nut 27 moves back and forth along the axial direction of the adjusting screw 22. Then, since this nut 27 is supported by a bracket 28 fixed to the reflecting mirror 11, the reflecting mirror 11 connects the ball joint part at point A and the ball joint part at point C (receptor 31 - sphere 36 connection). It will be tilted in the left-right direction about the line connecting the point). When tilting the reflecting mirror 11 in the vertical direction, another adjusting screw 22 is operated. That is,
The adjusting screw 22 is screwed into or unscrewed into a nut 27 supported at one end of the connecting body 30. Then, the nut 2 of the connecting body 30
The part to which 7 is attached moves in the front-back direction. That is, the connector 30 has a receiver 41 fixed to the other end.
and the joint rod 55 as a fulcrum. Then, the connection point between the connecting body 30 and the reflecting mirror 11, that is, the connecting point between the receiver 31 and the sphere 36, also moves back and forth, so that the reflecting mirror 11 moves between the ball joint at point A and the ball joint at point B. The bracket 27 is tilted vertically about a line connecting the connecting portion of the bracket 28.

Next, let's talk about leveling. When an operating section (not shown) of the leveling device is operated, the hydraulic pressure within the cylinder 46 of the leveling drive section 45 is changed, and the piston 47 is moved forward or backward. Then,
Joint rod 55 connected to piston 47
is slid in the front-rear direction, and the other end of the connecting body 30 connected to the front end of the joint rod 55 moves in the front-rear direction. That is,
The connecting body 30 tilts about the joint with the nut 27 as a fulcrum, and as a result, the portion of the reflecting mirror 11 connected to the connecting body 30 also moves in the front-rear direction.
Therefore, the reflecting mirror 11 is tilted in the vertical direction about the line connecting the ball joint at point A and the connection between the nut 27 and the bracket 28 at point B.

As is clear from the above description, the reflecting mirror or the member connected to the reflecting mirror (in the above embodiment, the connecting body 30, which is the member connected to the reflecting mirror 11) and the movable portion of the leveling drive unit 45 ( Similarly, between the piston 47) and the joint rod 5
5, and the joint rod 55
The joint rod 55 is inserted so as to be slidable relative to the lamp body 1, and a flange 58 is formed on the portion of the joint rod 55 outside the lamp body 1, which abuts against the rear surface of the lamp body. It is possible to assemble it with it removed, and then attach the leveling drive section when assembling it to the vehicle body. That is, since the flange 58 is formed on the joint rod 55,
The sphere 57 at the rear end of the joint rod 55 is placed in contact with the spherical recess 54 of the piston 47 of the leveling drive unit 45, and from that state the leveling drive unit 4
5 is pushed forward, this force is received by the flange 58 that comes into contact with the rear surface of the lamp body 1, so that the piston 47 and the rear end of the joint rod 55 can be easily connected.

As described above, in the vehicle headlamp of the present invention, there is no need to attach the leveling drive section before assembly to the vehicle body, so it is extremely suitable especially when using a hydraulic leveling drive section. be.
In other words, if the leveling drive unit is built into the headlight, it is difficult to install it on the vehicle body if the piping is connected to the operation unit. Cut it in the middle,
A suitable connector must be used at this cut point. If the hydraulic pipe is cut in this way, the risk of air entering the hydraulic system or liquid leakage increases, reducing the reliability of the equipment. However, as in the present invention, if the leveling device and the headlight can be incorporated into the vehicle body separately and then connected together, the above-mentioned problems can be completely solved.

In the above embodiment, the joint rod is connected to the reflecting mirror via the connecting body 30.
This may be directly connected to the reflecting mirror, or may be connected via a member other than the above-mentioned connecting body. These are all derived from the method of relating the initial aiming mechanism and leveling mechanism employed in the headlamp.

[Brief explanation of the drawing]

The drawings show an example of implementation of the vehicle headlamp of the present invention, and FIG. 1 is a front view, and FIG.
3 is a sectional view taken along the - line in FIG. 1, FIG. 4 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a perspective view of the initial aiming mechanism, and FIG. is an exploded perspective view thereof, and FIG. 7 is a perspective view of the leveling drive section. Explanation of symbols: 1...Lamp body, 2...Space, 7...Lens, 11...Reflector, 30...Member connected to the reflector, 45...Leveling drive section, 47...Moving part, 55... joint rod, 58... flange.

Claims (1)

[Scope of utility model registration request] In a vehicle headlamp in which the front surface of the lamp body is covered with a lens and the reflector is tiltably arranged in a space limited by the lamp body and the lens, the point connecting the reflector and the lamp body is - is a connection mechanism via a leveling drive unit that is fixed to the lamp body and includes a movable part that is moved back and forth by automatic or manual remote control, and is connected to a reflector or a reflector in the connection mechanism; The fixed member and the movable part of the leveling drive unit are connected via joint rods that are rotatable with respect to each other, and the joint rods are slidably inserted into the lamp body and connected to the parts outside the lamp body. A vehicle headlamp characterized in that a flange is formed that comes into contact with the rear surface of the lamp body.