JPS6242416Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a novel vehicle headlamp. 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 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 of the main parts at the adjustment point where the initial aiming mechanism and the leveling mechanism are installed. In a vehicle headlight device in which the irradiation direction of the headlight can be changed with respect to the vehicle body, a member whose mounting angle with respect to the vehicle body is changed, that is, a tilting member, and a member that is fixed to the vehicle body, that is, a tilting member. It is connected to the fixed side member at three points, one of which is connected by a ball joint, and the remaining two points are separated from the ball joint in the vertical and horizontal directions when viewed from the front. A nut is supported by the tilting member at each point, and an adjusting screw is rotatably provided on the fixed side member at a point laterally separated from the ball joint, and the adjusting screw is screwed into the nut.
A leveling drive unit including a moving part that is moved back and forth by automatic or manual remote control is fixed to the fixed side member at the remaining point vertically separated from the ball joint, and the tip part is twisted to the nut. The rear end of the adjusted adjusting screw is rotatably connected to the movable part of the leveling drive section, and an operating shaft is rotatably provided on the stationary side member separately from these, and this operating shaft and the leveling The adjusting screw connected to the drive unit is connected to the adjusting screw via a transmission unit that transmits the rotation of the operating shaft to the adjusting screw and is slidable in the axial direction in relation to the adjusting screw. shall be.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 made of synthetic resin and has a square block shape, and has a hole (not shown) passing through the center of the nut 19 from front to back. An annular protrusion 20 is formed around the through hole on the rear surface of the nut 19. Further, on both sides of the nut 19, there are engagement grooves 21 extending in a direction perpendicular to the axial direction of the hole.
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. The support piece 22b is formed with a long groove-shaped engagement notch (not shown) that opens at its tip. However,
Connect both side edges of this engagement notch to the engagement groove 2 of the nut 19.
1, the nut 19 is supported in the support piece 22b of the bracket 22 so as to be slidable along a notch provided therein. 2
Reference numeral 3 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 protruding toward the front. This screw support portion 23 is formed with an insertion hole 24 that penetrates the screw support portion 23 back and forth. A flange 25 is formed in the middle part of the adjusting screw 18, and the adjusting screw 18 has an insertion hole formed in the supporting part 23 until the flange 25 comes into contact with the rear surface of the supporting part 23 of the body 1. 24 from behind, and 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 19.
The coil spring 26 is fitted onto the annular protrusion 20 formed on the outside, and the rear end is fitted onto the boss-shaped support 23, thereby stably positioning both ends of the coil spring 26.

A rear end portion 27 of the adjusting screw 18 slightly protruding toward the rear of the body 1 is connected to a screw drive mechanism 28. The screw drive mechanism 28 includes a direction changing gear section 29 and an operating shaft 30. The direction conversion gear part 29 is connected to the gear case 3
1, a worm 32 and a worm wheel 33 arranged in the gear case 31 and meshed with each other. The gear case 31 consists of two case division bodies 34 ₁ and 34 ₂ , and these two case division bodies 34 ₁ and 34 ₂ have a substantially symmetrical shape. The case division bodies 34 ₁ and 34 ₂ are formed of synthetic resin, and the gear chamber forming portion 35 ₁ or 35 ₂ and the flange portion 36 ₁ or 36 ₂ protruding from the periphery thereof are integrally formed. Become. The gear chamber components 35 ₁ and 35 ₂ are open on the side to be joined, and the worm storage portions 37 ₁ and 3 are respectively opened.
7 ₂ and worm wheel storage portions 38 ₁ , 38 ₂ , and worm wheel storage portions 37 ₁ , 37 _{2 .}
is a half-divided cylindrical recess whose dividing surface is an opening surface, and the worm wheel storage portions 38 ₁ , 3
Reference numeral ₈₂ is a recessed portion having a circular opening shape, and the recessed portions 37 ₁ and 38 ₁ and 37 ₂ and 38 ₂ are continuous. And worm storage parts 37 ₁ and 37 ₂
Semicircular bearing notches 39 ₁ , 39 ₁ and 39 ₂ , 39 ₂ are formed in the walls that define the upper and lower sides of the worm wheel storage parts 38 1 and 38 2 , and the worm wheel storage parts 38 1 and 38 2 have semicircular bearing notches 39 1 , 39 1 and 39 2 , 39 ₂ formed in the central part of the worm wheel storage parts 38 ₁ and 38 2 . Bearing holes 40 ₁ and 40 ₂ are formed in circular shapes. The flange portions 36 ₁ and 36 ₂ are formed to protrude outward from the opening edges of the gear chamber constituent portions 35 ₁ and 35 ₂ , and the flange portion 36 ₁ of one of the case divided bodies 34 ₁ has a
Claws ₄₁ , 41, which protrude toward the joining side and whose tips protrude inward, are integrally formed at both ends in the arrangement direction of the storage portions 371, ₃₈₁ , and furthermore, the claws 41, 41 forming portions are formed integrally with each other. There is a kerf 4 on the inside of the
2, 42 are formed. Also, the flange portion 36
Small protrusions 43, 43 are formed at appropriate positions of ₁ to protrude toward the joining side. The flange portion 36 ₂ of the other case divided body 34 ₂ has a storage portion 37 .
₂ , 28 Notches 4 at both ends in the arrangement direction of ₂
4, 44 are provided, and these portions 44, 44 are claws 41, 4 formed on one case division body ₃₄₁ .
1. Furthermore, the flange portion _{36 2 of} the other case split body 34 2 has similar cut grooves 45 , 45 at locations corresponding to the cut grooves 42 , 42 of the one case split body 34 ₁ , and small protrusions 4 .
Small holes 46, 46 are formed at locations corresponding to 3, 43.

Thus, the case divided bodies 34 ₁ and 34 ₂ formed in this way are joined with their opening sides facing each other, and thereby the gear case 31
is formed. At this time, one case divided body 3
The notches ₄₄ , 44 of the other case divided body 342 engage with the claws 41, ₄₁ formed on the case divided body 41, and thereby the two case divided bodies ₃₄₁ and ₃₄₂ are connected. Furthermore, at this time, the protrusion 4 formed on one side
3 and 43 are fitted into small holes 46 and 46 formed in the other, so that the mutual joining position is accurately determined.
In this way, the case divided bodies 34 ₁ , 34 ₂
The worm 32 is placed in the space formed by the recesses 37 ₁ and 37 ₂ when the recesses 38 and 3 are joined.
8. Worm wheel 3 is placed in the space formed from _2.
3 are stored respectively. At this time, the shaft parts 47, 47 formed protruding from both ends of the worm 32 are rotatably supported in the circular bearing holes formed by the notches ₃₉₁ and ₃₉₂ and ₃₉₁ and ₃₉₂ ,
Further, shaft portions 48, 48 formed at the center of both surfaces of the worm wheel 33 are rotatably supported by bearing holes ₄₀₁ and ₄₀₂ , and the worm wheel 32
and the worm wheel 33 are meshed within the gear case 31.

Reference numeral 49 denotes a bracket, in which mounting ears 50, 50 projecting from the top and bottom to the sides, and a gear part mounting portion 51 projecting in the opposite direction to the direction in which the upper mounting ears 50 project, press a metal plate. It is integrally formed. Bolt insertion holes 52, 52 are formed in each of the mounting ears 50, 50, and several screw insertion holes 53, 53 are formed in the main body. Two claw pieces 54, 54 are formed on the gear part attachment part 51 at an appropriate interval and are raised upward toward the rear. Then, the claw pieces 54 and 54 are inserted into the grooves 42, 45 and 42, 45 of the gear case 31, and the portions of the claw pieces 54, 54 that come out on the opposite side are bent, thereby forming the direction changing gear part. 29 is attached to the bracket 49. Furthermore, warm 3
2 is formed with a hole 55 having a track-shaped cross section passing through its center, and the tip of the operating shaft 30 having a cross section that matches the shape of this hole is inserted and fixed. ing. The operating end 30a of the operating shaft 30 is located above the upper edge of the bracket 49. A mounting screw 56 is inserted from the rear into the screw insertion hole 53 of the bracket 49, and the bracket 49 is fixed to the body 1 by screwing the screw 56 into the body 1. At this time, the rear end portion 27 of the adjusting screw 18 having a cross-sectional shape adapted to this shape is inserted into a hole 57 having a track-shaped cross section formed through the center of the worm wheel 33, and thereby, The adjusting screw 18 and the screw drive mechanism 28 are connected.

Next, the aiming mechanism 17' at point C will be explained. 58 is a bracket attached to the other side of the rear surface of the body 1. This bracket 58 is also integrally formed with mounting lugs 59, 59 that project laterally from above and below, and bolt insertion holes 60, 60 are formed in the mounting lugs 59, 59. In the lower part of the main part 61, two claw pieces 62, 62 are formed upwardly toward the rear at an appropriate interval. And this nail piece 6
2, 62 is the cut groove 4 of the other gear case 31
2, 45 and 42, 45, and the claws 62, 6
The opposite side of 2, that is, the rearwardly extending portion is bent, and the direction changing gear portion 29 is attached to the bracket 58. The tip of the operating shaft 30', which is longer than the aforementioned operating shaft 30, is the worm 3.
It is inserted and fixed into the hole 55 of No. 2. The operating portion 30'a of the operating shaft 30' is located above the upper edge of the bracket 58. In addition, since the operating shaft 30' is quite long, it would be unstable if only its tip was connected to the worm 32, so a portion near the operating portion 30'a is supported by the upper part of the bracket 58 by a clip 63. ing. The clip 63 is made of synthetic resin and consists of two arm pieces 64, 64 whose opposing surfaces are curved concavely, and a truncated conical dowel 65 protruding from the base side of the arm pieces 64, 64 in the opposite direction. An annular groove 66 is formed between the dowel 65 and the bases of the arm pieces 64, 64. Further, the dowel 65 has a slot (not shown) formed therein, so that the dowel 65 has elasticity. Then, this dowel 65 is inserted into a hole 67 formed in the upper part of the main part 61 of the bracket 58, and the annular groove 66 engages with the edge of the hole 67, thereby fixing the clip 63 to the bracket 58. . A portion of the operating shaft 30' near the operating portion 30'a is held between the arm pieces 64 of the clip 63. Reference numeral 68 denotes a screw insertion hole provided in the main part of the bracket 58. The mounting screw 56 is inserted into the screw insertion hole 68 from the rear, and the bracket 58 is attached to the body 1 by screwing the screw 56 into the body 1. Fixed.
At this time, a connecting portion 70 having a track-shaped cross-section slightly in front of the rear end of the adjusting screw 69 is inserted into the hole 57 of the worm wheel 33. The tip of the adjusting screw 69 is screwed at point C into a nut 19 that is supported in the same way as the nut 19 by a support piece 71b of a bracket 71 fixed to the rear surface of the opening edge of the reflecting mirror 8. It should be noted that the compression coil spring 26 is not necessary in this aiming mechanism 17'.

Reference numeral 72 denotes a drive unit of the leveling device, and in this embodiment, a hydraulic type is shown. This drive section 72 includes a cylinder 73 and a piston 74, and is connected to an automatic or manual operation section (not shown) via a hydraulic pipe 75, and responds to changes in the hydraulic pressure in the cylinder 73 due to the operation of the operation section. The piston 74 moves forward or backward. A flange 76 is formed protruding from the outer circumferential wall of the cylinder 73, and the flange 76 is further formed in front of the flange 76.
Several protrusions 77 are formed at slight intervals. 78 is a mounting hole formed at a location corresponding to position C of the vehicle body 79, and this mounting hole 78 has a notch 8 through which the protrusion 77 provided on the cylinder 73 passes.
0 is set. The leveling drive section 72 is inserted into the mounting hole 78 from the rear up to the flange 76, with a wave washer 81 formed of a plate-shaped spring material fitted onto the front side of the flange 76. At this time, the protrusion 77 passes through the notch 80 formed in the mounting hole 78 and passes through the vehicle body 79.
Go to the front side. Therefore, if the leveling drive section 72 is slightly rotated so that the protrusion 77 and the notch 80 are misaligned, the wave washer 81 will be compressed between the flange 76 and the rear surface of the vehicle body 79, so that the leveling drive The portion 72 is securely attached to the vehicle body 79. This leveling drive unit 7
A spherical recess 82 is formed at the front end of the second piston 74. Reference numeral 83 indicates the piston 74 of the leveling drive unit 72 and the adjusting screw 6.
This is a joint that connects the rear end of 9. The joint 83 is made of nylon resin, for example, and has a spherical body 84 at its rear end. The front side of the joint 83 has a cylindrical shape 85 that opens forward, and a projection 86 is provided inside the open end of the cylindrical body 85.
is formed. An annular groove 8 is formed on the outer peripheral surface of the rear end portion of the adjusting screw 69.
7 is formed, a cylindrical body 85 of a joint 83 is fitted into the rear end of the adjusting screw 69, and a protrusion 86 of the cylindrical body 85 is engaged with a groove of the adjusting screw 69.
Further, the spherical body 84 of the joint 83 is connected to the spherical recess 8 formed in the piston 74 of the leveling drive unit 72.
It is inserted into 2. By this, joint 8
Piston 74 of leveling drive 72 via 3
and the adjusting screw 69 are connected.

The bolt insertion holes 52, 52 and 60, 60 formed in the aforementioned brackets 49, 58 are for passing bolts for attaching the body 1 to the vehicle body. Further, reference numeral 88 denotes a flanged light bulb attached to an attachment hole 89 formed at the rear of the reflector 8;
is a rubber cover, in which a base 92 of a light bulb 88 is fitted into a hole 91 provided in the center, and an outer part 93
is fitted onto the outside of the rear insertion hole 2 of the body 1.

In the vehicle headlamp device configured as described above, when the operation shaft 30 is operated, the worm 32 in the direction conversion gear section 29 is rotated, and the worm wheel 33 meshed with the worm 32 is rotated. is also rotated. Since the rear end portion 27 of the adjusting screw 18 is inserted into the non-circular hole 57 of the worm wheel 33, the adjusting screw 18 is also rotated together with the worm wheel 33. Since the tip of the adjusting screw 18 is screwed into a nut 19 attached to the reflecting mirror 8, it is screwed into or unscrewed into the nut 19 depending on the direction of rotation. However, since the adjuster steering screw 18 is held by its collar 25 and spring 26 so that it can rotate relative to the body 1 but not slide in the axial direction, the nut 19 has a better adjustability. The reflector 8 moves back and forth along the axis of the screw 18, and therefore, the side to which the nut 19, which is screwed into the operated adjusting screw 18, is attached is connected to the rotation fulcrum mechanism 9. It is rotated about a line connecting one aiming mechanism 17' as a rotation axis. When the other operating shaft 30' is operated, the adjusting screw 69 is also rotated via the worm 32 and the worm wheel 33 in the direction changing gear section 29. Since the rear end of this adjuster steering screw 69 is also connected to the piston 74 of the leveling drive unit 72 fixed to the vehicle body 79, the nut 19 moves forward and backward along the axial direction of the adjuster steering screw 69. Therefore, the reflector 8
The operated Asia Sting Screw 69
The side to which the nut 19 is attached is rotated about the line connecting the rotation fulcrum mechanism 9 and the aiming mechanism 17 as the rotation axis.

Next, let's talk about leveling. When an operating section (not shown) of the leveling device is operated, the hydraulic pressure within the cylinder 73 of the leveling drive section 72 is changed and the piston 74 is moved forward or backward. Then, the adjusting screw 69 connected to the piston 74 via the joint 83 is moved in the front-rear direction. In this case, since the connecting portion 70 of the adjusting screw 69 is slidably engaged with the hole 57 of the worm wheel 33, the adjusting screw 69 can be moved in the front-back direction. As a result, the part of the reflector 8 to which the nut 19, which is screwed into the adjusting screw 69, is attached is moved in the front-rear direction, and the reflector 8 is connected to the rotation fulcrum mechanism 9 and the aiming mechanism. It will be rotated using the line connecting it to the mechanism 17 as the rotation axis.

As described above, in the vehicle headlight device of the present invention, in the part where the aiming mechanism and the leveling mechanism are installed, the adjusting screw 69 is a common member for both mechanisms, so the structure is simple. There is an advantage that

FIG. 10 shows another embodiment of the vehicle headlamp device of the present invention. This embodiment shows a modification in the part where the aiming mechanism and the leveling mechanism are provided together, and the other parts are the same as those in the previous embodiment.

An axially long gear 94 is fixed to the intermediate portion of the adjusting screw 69', the tip of which is screwed into the nut 19 and the rear end of which is connected to the piston 74 of the leveling drive unit 72. A nut 9 made of synthetic resin, for example, nylon resin, is installed near the location where the leveling drive unit 72 of the vehicle body 79' is fixed.
5 is fixed, and the operating shaft 9 is attached to this nut 95.
6 are screwed together. As a result, the operation shaft 96
and the adjusting screw 69' are arranged in parallel. A gear 97 is located near the tip of the operating shaft 96.
is fixed, and this gear 97 is meshed with the gear 94 of the adjusting screw 69'. However, Asia Sting Screw 6
Since the gears 94 and 97 slide in accordance with the movement of the piston 74 of the leveling drive unit 72, the gear 9' can be moved in the front and back direction. Also, when the operating shaft 96 is rotated, the gears 97, 94.

In addition, in the above embodiment, the leveling drive section 72
was fixed to the vehicle body 79 or 79', but body 1
A bracket may be fixed to the bracket, and the leveling drive section may be fixed to the bracket.

Furthermore, in the above embodiments, the tilting member was a reflector, and the fixed side members were the lamp body and the vehicle body. It may also be configured as a tilting member.

[Brief explanation of the drawing]

1 to 9 show an example of implementation of the vehicle headlamp device of the present invention, and FIG. 1 is a front view, and FIG.
The figure is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, Fig. 4 shows one side of the case divided body, Fig. A is a view from the opposite side, and Fig. B is a sectional view taken along the - line in Fig. 1. A cross-sectional view taken along the line B-B in Figure A, Figure 5 shows the other side of the case divided body, Figure A is a facing view, and Figure B is a cross-sectional view of Figure A.
6 is a rear view showing one side of the bracket, Figure 7 is a rear view showing the other side of the bracket, Figure 8 is a partially cutaway left side view of Figure 7, and Figure 9 is a sectional view taken along line -B. 10 is an exploded perspective view showing a part of the leveling drive unit and related members, and FIG. 10 is a view showing another embodiment of the vehicle headlamp device of the present invention, showing the same parts as FIG. 3. Explanation of symbols: A, B, C... Connection point between tilting member and fixed side member, 1... Fixed side member, 8...
Tilting member, 9...Ball joint part, 18...
Asia Sting Screw, 19...Natsuto,
29...Transmission section, 30, 30'...Operation shaft, 6
9,69'...Asia Sting Screw, 7
2... Leveling drive unit, 74... Moving part, 7
9,79'...Vehicle body, 94,97...Transmission part.

Claims (1)

[Scope of utility model registration request] In a vehicle headlight device in which the irradiation direction of the headlight can be changed with respect to the vehicle body, a member whose mounting angle with respect to the vehicle body is changed, that is, a tilting member, is attached to the vehicle body or a member fixed to the vehicle body, that is, a fixed side member. One of the points is connected by a ball joint, and the remaining two points are separated from the ball joint in the vertical and horizontal directions when viewed from the front view, and the tilting member is connected at each point. A nut is supported on the nut, and an adjusting screw is rotatably provided on the stationary side member at a point laterally separated from the ball joint, and this adjusting screw is screwed into the nut, and the adjusting screw is screwed into the nut, and the adjusting screw is screwed into the nut, and the adjusting screw is rotated from the ball joint in the vertical direction. A leveling drive unit including a moving part that is moved back and forth by automatic or manual remote control is fixed to the fixed side member at the remaining separated point, and an adjusting screw whose tip is screwed into the nut. The rear end portion is rotatably connected to the movable portion of the leveling drive unit, and separately from these, an operating shaft is rotatably provided on the stationary side member, and the rear end portion is rotatably connected to the movable portion of the leveling drive unit. A vehicle headlamp characterized in that the steering screw is connected to the adjusting screw via a transmission part that transmits rotation of an operating shaft to the adjusting screw and is slidable in the axial direction in relation to the adjusting screw. Device.