JPH0219014B2 - - Google Patents

Abstract

PURPOSE:To enable a head lamp assembly to be compact by arranging a rotary disc of a drive device to control the tilting movement of tilt members for changing the direction of irradiation within the head lamp assembly together with a movable unit and a drive unit. CONSTITUTION:A head lamp 1, the setting angle to a car frame of which can be changed, allows its direction of irradiation to be changed by the rotation of a motor 10 through a drive unit 49, a movable unit 49, a movable unit 45, and a rotary screw 40. A rotary disc 12 which controls the rotation of the motor 10 rotates accompanied with the rotation of the motor 10, and is positioned by the relative position among conductive sections 15 and 16 and a contact point 78. Here, the movable unit 45 and the drive unit 49 are arranged coaxially but the rotary disc 12 is arranged so that its shaft is shifted from the shaft of these units allowing them to be completely arranged within the head lamp assembly. And the rotary disc 112 is arranged with its shaft shifted enabling a control unit alone to be assembled as an independent unit, this configuration can enhance the accuracy in an installation of the control unit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a novel vehicle headlamp device. Specifically, the irradiation angle of the headlights is adjusted by adjusting the angle at which a tilting member, which is held so as to be tiltable relative to the vehicle body, is attached to the vehicle body in multiple stages by remote control from the driver's seat. This invention relates to a vehicular headlamp device that is capable of compactly incorporating a control section equipped with a mechanism for controlling a drive source for tilting a tilting member into the headlamp device. The present invention aims to provide a new vehicle headlamp device that is capable of reducing the size of the entire device, improving workability in assembling the components of the control section, and improving the assembly accuracy. .

BACKGROUND TECHNOLOGY In vehicles, especially automobiles, the body and wheels are connected by a suspension system consisting of leaf springs, coil springs, etc., so if a large load is applied to the front or rear side of the vehicle body, the posture of the vehicle body may change. The front of the vehicle is sunk forward or backward, and as a result, the angle of illumination of the headlights relative to the road surface changes, impairing driving safety. There is a danger that the driver will be seriously dazzled.

OBJECTS OF THE INVENTION Therefore, an object of the present invention is to provide an adjustment device that can adjust the irradiation angle of a headlamp by remote control from the driver's seat, and to control a drive source for tilting a tilting member. A control unit equipped with a mechanism for performing the above functions can be compactly incorporated into a headlamp device, thereby reducing the size of the entire device, improving workability in assembling components of the control unit, and improving assembly accuracy. It is an object of the present invention to provide a novel vehicle headlamp device that can perform the following functions.

Summary of the Invention In order to achieve the above-mentioned object, the vehicle headlight device of the present invention is a vehicle headlight device in which the direction of illumination of the headlight can be changed with respect to the vehicle body, and the mounting angle relative to the vehicle body can be changed. A movable body connected to the tilting member, a drive body that moves the movable body, and a drive that rotationally drives the drive body. and a rotary plate included in the control section for controlling the drive section is rotated in response to rotation of the drive body, and the movable body and the drive body are coaxially arranged. The rotary plate is disposed offset from the axis thereof and is assembled to another casing which is fixed to a recess formed in the rear part of the casing by means such as screws.

Embodiments Hereinafter, details of a vehicle headlamp device according to the present invention will be described in accordance with embodiments shown in the accompanying drawings.

FIG. 1 is an explanatory view of the entire irradiation angle adjustment device for a vehicle headlamp according to the present invention, which is composed of a headlamp 1, a drive section 2, an operating section 3, and a power source 4.

The headlamp 1 is held by a headlamp holding member 5, and a support piece 6 provided at the upper part of the holding member 5 is rotatably attached to the vehicle body.
a is connected to the tip of the drive shaft 7 of the drive unit 2. The drive unit 2 is fixedly provided to the vehicle body near the headlight 1, and has a drive shaft 7 that is movable relative to the vehicle body, and when the drive shaft 7 is displaced relative to the vehicle body, the drive shaft 7 moves relative to the vehicle body. The connection point with the headlight 1 is displaced with respect to the vehicle body, and therefore the inclination angle of the headlight 1 with respect to the vehicle body is changed. The operating section 3 includes multi-stage changeover switches 8 and 9 that determine the angle of inclination of the headlamp 1 with respect to the vehicle body.

FIG. 2 shows a control circuit of the irradiation angle adjusting device for a vehicle headlamp according to the present invention, and will be explained in more detail using this diagram.

Reference numeral 10 denotes a DC motor included in the drive unit 2, and the drive shaft 7 is displaced with respect to the vehicle body by this motor 10.

Reference numeral 11 denotes a multi-stage switching control section included in the drive section 2, which includes a rotary plate 12 and a large number of fixed contacts 13A, 13.
B, ..., 13E and 14A, 14B, ..., 1
Consists of 4E. Although not shown in the drawings, the rotating plate 12 has gear teeth formed on its outer peripheral surface.
It is rotated clockwise and counterclockwise by the rotation of a gear for driving a rotary plate, which will be described later, which is meshed with the gear teeth. Fixed contacts 13A, 13
B,..., 13E and 14A, 14B,..., 14
E is attached to a suitable mounting member, and exists as two groups that are fixed to each other in relation to the rotary plate 12, and the fixed contacts 13A, 13 of one group
B, ..., 13E and the fixed contacts 14 of the other group
The relative positional relationship between A, 14B, . . . , 14E and the rotating plate 12 is changed as the drive shaft 7 is displaced.

Contact points 13A, 13B, ..., 13 of rotating plate 12
There are two conductive parts 15 and 16 on the side that is in contact with E and 14A, 14B, ..., 14E (the parts shown in the satin pattern in the drawing, and the same applies to other drawings). is formed. The conductive parts 15 and 16 are approximately semicircular belt-shaped, which are formed by deleting two places approximately 180 degrees apart from a circular conductive region, and the deleted parts are similar to the insulating part 1.
7 and 18.

Fixed contacts 13A, 13B,..., 13E and 1
4A, 14B, ..., 14E are conductive parts 15 and 1
The fixed contacts 13A, 13B, . . .
..., 13E are arranged so that the rotation locus of the conductive part is divided into two by a center angle of about 180 degrees, and the fixed contacts 14 of the other group
A, 14B, . Fixed contacts with additional symbols are arranged 180 degrees apart from each other about the center of rotation of the rotation locus of the conductive parts 15 and 16. Such fixed contacts 13A, 13B,
..., 13E and 14A, 14B, ..., 14E
Although the manner of arrangement is not necessarily defined or restricted to the above-mentioned range, when a certain fixed contact in at least one group comes into contact with one of the two insulating parts 17 or 18, The fixed contacts of the other group with the same additional code as the fixed contact are connected to the other insulating part 18 (or 1
7), and in this state, all other fixed contacts are in contact with the conductive part 17 or 18.

19 and 20 are connection terminals arranged on the rotation axes of the conductive parts 15 and 16, and the fixed contacts 13
A, 13B, ..., 13E group (or fixed contact 1
4A, 14B, . Contact with the portion 16 is maintained at all times. One of the connection terminals 19 is connected to the forward rotation side input terminal 21 of the motor 10, and the other connection terminal 20 is connected to the reverse rotation side input terminal 22 of the motor 10.

Reference numerals 8 and 9 indicate multi-stage changeover switches included in the operating section 3, and the contact switching operations of the switches 8 and 9 are performed in conjunction with each other. In this embodiment, switch 8 is used as an operating side switch, and switch 9 is used as a driven side switch, and by operating switch 8, the contact of switch 9 is also changed.

The switch 8 includes a movable contact 25 having a common terminal 24 connected to the positive terminal 23 of the power source 4, and a plurality of switching contacts 26A, 26B, which can switch the connection to the common terminal 24 by the movable contact 25.
26E. And the switching contact 26
A, 26B, ..., 26E are fixed contacts 13A, 13B, ... of one group of the two fixed contact groups described above.
. . , 13E are connected to those having the same additional code. In addition, the switch 9 is connected to the ground circuit 27.
A movable contact 29 having a common terminal 28 connected to
and a plurality of switching contacts 30A, 30 whose connection to the ground circuit 27 can be switched by the movable contact 29.
B, ..., 30E. The switching contacts 30A, 30B, ..., 30E are the fixed contacts 14A, 14B, ..., 14E of the other group described above.
are connected to the same additional code. Therefore, the fixed contacts 13A, 1 of one group
3B, ..., 13E constitute a power supply side fixed contact group, and the fixed contacts 14A, 14B, ..., of the other group
14E constitutes a group of ground side fixed contacts.

As mentioned above, the rotary plate 12 is rotated as the motor 10 of the drive unit 2 is rotated, and in the illustrated embodiment, the rotation direction is the normal rotation direction of the motor 10. When the motor 10 is rotated, it is rotated counterclockwise, that is, in the direction of the solid line arrow in the figure, and when the motor 10 is rotated in the reverse direction, it is rotated clockwise, that is, in the direction of the broken line arrow in the figure. It is designed so that it can be rotated.
When the motor 10 is rotated in the forward direction, the headlight 1 is tilted in the direction indicated by the solid arrow in the figure, that is, in a downward direction, and when the motor 10 is rotated in the reverse direction, the headlight 1 is tilted in the direction shown by the solid line arrow in the figure. , the headlight 1 is tilted in the direction indicated by the dashed arrow in the figure, that is, in the upward direction.

Therefore, the switching contact 26A of the switching switch 8,
26B, . The fixed contact 13 flows through the path of the fixed contact 13 and is further brought into contact with the switching contact 26 selected by the movable contact 25.
Either one of the conductive parts 15 or 1 that is in contact with
6 to the motor 10 through either one of the connection terminals 19 or 20, and further from the motor 10 to the connection terminal 20 or 19 → the conductive part 16 or 15 → the fixed contact 14 connected to the selected switching contact 30 →
The flow follows the path of the selected switching contact 30 → movable contact 29 → ground circuit 27, and therefore the motor 10
is rotated forward or reverse.

When the motor 10 is driven to rotate, the drive shaft 7 is moved relative to the vehicle body, thereby tilting the headlight 1 upward or downward, and rotating the rotating plate 12. . Rotating plate 12
is rotated and its insulating parts 17 and 18 are brought into contact with the selected fixed contacts 13 and 14,
That is, when the fixed contacts 13 and 14 leave contact with the conductive parts 15 and 16, the power source 4 and the motor 10
Since the connection with the drive shaft 7 is cut off, the motor 9 is stopped from rotating, the rotation of the rotating plate 12 is stopped, and the movement of the drive shaft 7 is stopped. This causes the headlamp 1 to stop tilting.

3 to 5 show an example of a specific mechanism of the drive section 2, and this mechanism will be explained below. The mechanism shown in Figs. 3 to 5 uses a composite adjustment mechanism in which an aiming mechanism and a leveling mechanism are integrated, and a control part consisting of a contact part and a conductive part is connected to the drive part. It is designed to be installed as a separate unit.

31 is a casing of the drive unit, which is fixedly attached to the vehicle body. 32 is casing 3
This is an insertion hole formed in the center of the front side wall 33 of 1, and the shape of the insertion hole 32 is approximately a regular octagon (see FIG. 4). 34 is a rear insertion hole formed in the center of the rear wall 35 of the casing 31;
The front insertion hole 32 and the rear insertion hole 34 are coaxially provided. 36 is the front wall 3 of the casing 31
3 is an annular support portion protruding from the inner surface of the central portion of the casing toward the center of the casing, and 37 is a central support wall protruding from the upper wall 38 of the casing 31 toward the center of the casing. Central support wall 3
A circular support hole 39 facing the support portion 36 is formed at the tip in the center of the casing No. 7 . Note that the centers of the annular support portion 36 and the support hole 39 are arranged coaxially with the centers of the insertion holes 32 and 34.

40 passes through the center part of the casing 31 through the front insertion hole 32 and the rear insertion hole 34 in the front-rear direction (in FIG. 3, the left side of the drawing is the front, the right side is the rear, The adjustment screw is provided in a penetrating manner (the relationship follows this front-back direction), and a regular hexagonal head 41 is formed at the rear end, and a sphere 42 is formed at the front end.
Further, a screw groove 43 is formed at least in the middle portion. The adjusting screw 40 has a spherical body 42 at its front end engaged with a spherical recess 44 formed in the lower part 5a of the headlamp unit holding member 5 so as to open toward the rear thereof. It is connected to the lower end of the headlamp unit holding member 5 in the form of a ball joint.

Reference numeral 45 denotes a cylindrical moving body formed with a screw hole 46 passing through the center, and the outer peripheral surface of the moving body 45 has a substantially regular octagonal shape when viewed along the axial direction (see Fig. 4). ), and a large diameter portion 47 having a circular outer peripheral surface is integrally formed at the rear end portion, and a screw groove 48 is formed on the outer peripheral surface of the large diameter portion 47. The intermediate portion of the adjustment screw 40 is screwed into the screw hole 46 of the movable body 45. Further, a portion of the movable body 45 in front of the large diameter portion 47 is inserted into the front insertion hole 32 of the casing 31 described above. Since both the outer shape of the movable body 45 and the shape of the front insertion hole 32 are regular octagons,
The movable body 45 is prevented from rotating and is allowed to move only in the axial direction when the movable body 45 moves toward the casing 31.
is maintained.

Reference numeral 49 denotes a driving body comprising a cylindrical portion 50 formed in a substantially cylindrical shape and a wheel gear portion 51 formed in a flange-like protrusion on the outer peripheral surface of the cylindrical portion 50. A support hole 52 that opens forward is formed in the cylindrical portion 50 , and a spur gear portion 53 is formed protruding from the center of the rear end surface, and furthermore, the rear end surface of the spur gear portion 53 and the rear end of the support hole 52 are connected to each other. An insertion hole 54 that communicates between
is formed. The front part of the cylindrical part 50 of the driving body 49 is rotatably fitted into the annular support part 36 of the casing 31, and the rear part of the cylindrical part 50 is formed in the central support wall 37 of the casing 31. The step portions 55, 55 formed at the base of the wheel gear portion 51 abut the rear end of the annular support portion 36 and the front surface of the central support wall 37, respectively. Therefore, the drive body 33 is rotatably supported by the casing 31. The movable body 45 has a screw groove 48 formed on the outer peripheral surface of the large diameter portion 47 thereof screwed into a screw groove formed on the inner peripheral surface of the support hole 52 formed in the cylindrical portion 50 of the drive body 49, As a result, the moving body 45 is held by the driving body 49.

56 is the motor 1 held within the casing 31
The worm gear 56 is connected to the output shaft 57 of the driver 49, and the worm gear 56 meshes with the gear teeth of the wheel gear portion 51 of the drive body 49. As the motor 10, a DC motor with a speed reduction mechanism 58 is used.

Note that the screw hole 46 of the movable body 45 and the adjustment screw 4
The screwing relationship with the screw groove 43 of 0 is the adjustment screw 4.
The adjustment screw 40 is in a screwed state such that when the adjustment screw 40 is rotated in the direction shown by the arrow 59 in the figure, the adjustment screw 40 can move toward the headlamp unit 1.
Further, the threaded relationship between the support hole 52 of the drive body 49 and the threaded groove 48 formed in the large diameter portion 47 of the movable body 45 is such that when the drive body 49 is rotated in the direction shown by the arrow 60 in the figure, the movable body 45 is in a threaded relationship such that it can be moved away from the headlamp unit 1.

So-called aiming adjustment, in which the vertical illumination angle of the headlamp unit 1 is adjusted by manually operating the adjustment screw 40, is performed as follows. That is, if the adjusting screw 40 is rotated in the direction shown by the arrow 59, the adjusting screw 40
is screwed into the screw hole 46 of the movable body 45 and moved toward the headlamp unit 1,
As a result, the headlamp unit 1 is rotated upward about the point supported by the support pieces 6 and 7 as the rotation center. Further, if the adjusting screw 40 is rotated in the direction opposite to the arrow 59, the adjusting screw 40 will be screwed back into the screw hole 46 of the movable body 45, and will be moved in the direction away from the headlamp unit 1. Therefore, the headlight 1 is rotated in a downward direction.

Next, the operation of moving the moving body 45 and leveling the headlamp 1 is performed as follows. That is, when the motor 10 is rotated in the normal direction, the worm 56 is rotated in the direction shown by the arrow 61 in the figure, thereby causing the wheel gear portion 51 that meshes with the worm 56 to be rotated in the direction shown by the arrow 60 in the figure. As a result, the driver 49 is rotated in the direction shown by the arrow 60. Then, when the driving body 49 is rotated in the direction shown by the arrow 60, the movable body 45 is moved away from the headlamp unit 1 while holding the adjustment screw 40. This is because, as described above, since the moving body 45 is prevented from rotating, when the driving body 49 is rotated, it is screwed into the threaded groove on the inner peripheral surface of the support hole 52 of the driving body 49. This is because the large diameter portion 47 of the movable body 45 is sent away from the headlamp unit 1. in this way,
When the movable body 45 is moved away from the headlamp unit 1 while holding the adjustment screw 40, the headlamp unit 1 is rotated downward. Furthermore, when the motor 10 is reversed, the worm 56 is rotated in the direction opposite to the arrow 61, and thereby the driver 49 is rotated in the direction opposite to the arrow 60.
The moving body 45 is moved toward the headlamp unit 1 while holding the adjustment screw 40, and the headlamp unit is rotated upward.

Note that a recess 62 is formed in the lower half of the rear part of the casing 31, and a notch 6 is formed in the recess 62.
3 is formed. Further, a cutout window 64 is formed in the side wall facing the recess 62, and the spur gear 53 integrally formed with the drive body 49 is exposed to the outside through the cutout window 64.

Next, the control mechanism will be explained.

65 is a casing, 66 is a casing 6
This is a rear plate that covers the rear surface of 5.

67 is a transmission gear. The transmission gear 67 is rotatably supported within the casing 65 and consists of a large-diameter gear 68 that meshes with the spur gear portion 53 of the drive body 49 and a small-diameter gear 69 that is integrally formed with the large-diameter gear 68. . A part of the large diameter gear 68 is exposed to the front side of the casing 65,
Moreover, the peripheral edge portion thereof is arranged so as to protrude slightly outward from the outer edge of the casing 65.

Reference numeral 12 denotes a rotating plate made of an insulating material such as synthetic resin, and is formed into a substantially disk shape. The rotating plate 12 is rotatably supported between the casing 65 and the contact plate 70 supported by the rear plate 66.
Two semicircular conductive parts 15 and 16 are formed on the rear surface of the rotating plate 12. Furthermore, gear teeth 71 are formed on the outer peripheral surface of the rotary plate 12, and the gear teeth 71 mesh with the small diameter gear 69 of the transmission gear 67.

The contact plate 70 is made of an insulating material such as synthetic resin,
For example, it is formed in the shape of a rectangular plate, and is attached to the rear plate 66 with a slight distance from the rotating plate 12. The contact plate 70 includes the rotary plate 12
A large number of through holes 72, 72, .
...is being formed.

73 is a printed wiring board integrally attached to the rear surface of the contact plate 70;
On the surface facing the contact plate 70, a contact plate 70 is provided.
A large number of conductive terminals 74, 74, . . . are printed and formed at positions facing the respective through holes 72, 72, . A notch 75 is formed on one side edge of the substrate 73, and a rear plate 6
6 has a cord insertion hole 76 formed at a position corresponding to the notch 75. 77 is a code.
Although not shown, the printed circuit board 73C
A printed wiring film is formed extending from each conductive terminal 74, 74, . . . to the edge of the notch 75.

78, 78, . . . are spherical contacts made of conductive material, and each contact 78, 78, .
The through holes 72, 72, . . . formed in the through holes 72, 72, .
Coil springs 79, 79, . . . made of a conductive material are inserted in a compressed state between the conductive terminals 74, 74, .
Each contact point 78, 7 due to the elastic force of 9, 79, ...
8, . . . are the conductive parts 15 and 16 of the rotating plate 12 or the insulating part 17 formed between the conductive parts 15 and 16.
and 18, and the conductive parts 15 and 16 of the rotary plate 12 and the conductive terminals 74, 74, .
An electrical connection is made between the two.

Then, as described above, the casing 65 in which each component is assembled is fixed in the recess 62 at the rear of the casing 31 by means such as screwing. At this time, the large diameter gear 68 of the transmission gear 67 supported by the casing 65 passes through the cutout window 64 provided in the casing 31 and meshes with the spur gear portion 53 formed integrally with the drive body 49.

Thus, when the drive body 49 is rotated, the transmission gear 67 having a large diameter gear 68 that meshes with the spur gear portion 53 formed integrally with the drive body 49 is rotated; transmission gear 6
The rotating plate 12 having gear teeth 71 that mesh with the small diameter gear 69 of No. 7 is rotated. The rotational operation of the rotary plate 12 is caused by the spherical contacts 78, 78 (fixed contact 13 in the circuit of FIG.
and 14. ) is the insulating part 1 of the rotating plate 12
7 and 18 is reached. Then, when the selected contacts 78, 78 come into contact with the insulating parts 17, 18 of the rotating plate 12, the rotation of the motor 10 is stopped, and the rotation of the drive body 49 and the transmission gear 67 is stopped by stopping the motor 10. Then, the rotation of the rotating plate 12 is stopped.

Next, the operation of adjusting the illumination angle of the headlight 1 by operating the operation switch 8 will be explained in FIGS. 6A to 6D.
This will be explained in more detail by giving specific examples.

First, a case will be described in which the changeover contact 26C is selected in the changeover switch 8 and the movable contact 25 is connected to it from the state shown in FIG. 6A.

Movable contact 25 and changeover contact 26 of changeover switch 8
At the same time as C is connected, the movable contact 29 of the changeover switch 9 and the changeover contact 30C are connected, and the power supply side fixed contact 13C is connected to the power supply 4 via the changeover switch 8.
The ground side fixed contact 14C is grounded via the changeover switch 9. And the same figure A
In the state shown in , the power supply side fixed contact 13C is in contact with one conductive part 15, and the grounding side fixed contact 14C is in contact with the other conductive part 16, so that the current from the power supply 4 is transferred to the changeover switch 8. Movable contact 25 → switching contact 26C → fixed contact 13C →
Conductive part 15 → connection terminal 19 → forward rotation side input terminal 21 of motor 10 → reverse rotation side input terminal 22 of motor 10
→Connection terminal 20→Conductive part 16→Fixed contact 14C→
Changeover contact 30C → Movable contact 29 of changeover switch 9
→ Grounding and flowing. Therefore, the motor 10 is rotated in the normal direction. When the motor 10 is rotated in the normal direction, the drive shaft 7 (adjustment screw 40 held by the movable body 45 in the above-mentioned adjustment mechanism) is moved away from the headlight, thereby causing the headlight 1 to move away from the headlight. is rotated in the direction shown by the solid line arrow in FIG. At the same time, the rotating plate 12 is rotated counterclockwise, and the conductive part 15 first leaves contact with the fixed contact 13B, then leaves the contact with the fixed contact 13C,
The fixed contact 13C is in contact with the insulating part 17, and on the other hand,
The conductive part 16 first leaves contact with the fixed contact 14B, then leaves the contact with the fixed contact 14C, and the fixed contact 14C comes into contact with the insulating part 18. That is, both the power supply side fixed contact 13C and the ground side fixed contact 14C are placed in a state in which they are not in contact with the conductive parts 15 and 16 (the state shown in FIG. 6B).
In this state, the motor 10 is disconnected from the power source 4, so its rotation is stopped, and the rotating plate 1
2 and the movement of the drive shaft 7 (adjustment screw 40) are also stopped. Therefore, the headlight 1 is connected to the drive shaft 7
The direction is determined by the tilt angle at the time when the movement of the adjustment screw 40 is stopped.

Next, from the state shown in FIG. 6C, selector switch 8
A case will be described in which the switching contact 26B is selected and the movable contact 25 is connected to it. When the movable contact 25 of the changeover switch 8 and the changeover contact 26B are connected, the movable contact 29 of the changeover switch 9 and the changeover contact 30B are connected, and the power supply side fixed contact 13B is connected to the power supply 4 via the changeover switch 8. and also,
The ground side fixed contact 14B is grounded via the changeover switch 9. In the state shown in Figure C, the power supply side fixed contact 13B is in contact with the conductive part 16, and the earth side fixed contact 14B is in contact with another conductive part 15, so that the current from the power supply 4 is Movable contact 25 of changeover switch 8 → changeover contact 26
B → Fixed contact 13B → Conductive part 16 → Connection terminal 20
→Reverse rotation side input terminal 22 of motor 10 →Motor 10
→ Forward rotation side input terminal 21 of motor 10 → Connection terminal 1
9 → Conductive part 15 → Fixed contact 14B → Switching contact 30
The flow goes from B to the movable contact 29 of the changeover switch 9 to ground. The motor 10 is therefore reversed. Motor 1
0 is reversed, the drive shaft 7 (adjustment screw 4
0) is moved toward the headlamp 1, and thereby the headlamp 1 is rotated in the direction shown by the dashed arrow in FIG. At the same time, the rotary plate 12 is rotated clockwise, the conductive part 16 leaves contact with the fixed contacts 13D, 13C, and 13B in this order, and the fixed contact 13B comes into contact with the insulating part 17. , while the conductive part 15 has fixed contacts 14D, 14C,
14B is released in this order, and the fixed contact 14B comes into contact with the insulating part 18.
That is, both the power supply side fixed contact 13B and the ground side fixed contact 14B are placed in a state in which they are not in contact with the conductive parts 15 and 16 (the state shown in FIG. 6D). In this state, the motor 10 is disconnected from the power source 4, so its rotation is stopped, and the rotation of the rotary plate 12 and the movement of the drive shaft 7 (adjustment screw 40) are also stopped. Therefore, the direction of the headlight is determined by the tilt angle at the time when the movement of the drive shaft 7 (adjustment screw 40) is stopped.

In the control circuit shown in FIG. 2, five fixed contacts 13 and 14 are provided to control the tilting of the headlamp unit 1 in five stages.
If a large number of through holes 72 are formed in the contact plate 70 as shown in the figure, any one of them can be used to appropriately select the number of control stages within the range of the number of through holes 72, as necessary. be able to be able to be able to be able to do so. For example, through hole 72 for fixed contact
If you prepare 20 pieces, to create the circuit shown in Figure 2, you would use only 10 of them and leave the remaining 10 pieces for free. Therefore, if 20 through-holes are prepared, it is possible to easily manufacture a device that controls the irradiation angle of the headlight in 10 steps or less depending on the vehicle to which it is applied.

Effects of the Invention As is clear from the above description, the vehicle headlight device of the present invention is a vehicle headlight device in which the irradiation direction of the headlight can be changed with respect to the vehicle body. At one point where the tilting member whose angle is changed is supported by the vehicle body or a member fixed to the vehicle body, a movable body connected to the tilting member, a drive body for moving the movable body, and a rotation of the drive body are provided. A driving part for driving is provided in a casing, and a rotary plate included in a control part for controlling the driving part is rotated in response to rotation of the driving body, and the movable body and the driving body are connected to each other. They are arranged coaxially, and the rotating plates are arranged offset from their axes, and are assembled into another casing which is fixed in a recess formed in the rear part of the casing by means such as screws.

Therefore, according to the present invention, the rotary plate of the drive control unit for controlling the tilting operation of the tilting member that changes the irradiation direction of the headlight can be compactly housed in the headlamp device together with the moving body and the driving body. It is possible to equip it.

In addition, the rotary plate was placed offset from the axes of the movable body and the driving body, and was assembled to another casing that was fixed by means such as screws in the recess formed at the rear of one casing. It is possible to assemble only the components such as the above as separate units, and it is possible to assemble the control section with high precision.

In each of the embodiments described above, the tilting member that changes the irradiation direction of the headlamp 1 is the headlamp 1 itself, but the member that is tilted in the present invention is not limited to the headlamp 1 itself; for example, The lamp body of the headlamp 1 is fixed to the vehicle body, and the reflector is held so as to be tiltable relative to the lamp body, and the tip of the moving body (adjustment screw) is connected to a part of the reflector. The reflecting mirror may also be tilted.

Further, in the embodiments described above, a motor was used as the drive source for driving the drive shaft, but a hydraulic cylinder may also be used as the drive source depending on the case. When a hydraulic cylinder is used as the drive source, a rack mechanism may be used as a means for rotating the drive body.

Further, in the above embodiment, the conductive part was provided on the rotary plate and the conductive part was rotated relative to the fixed contact, but in some cases, the conductive part may be fixed and the fixed contact rotated. It may be provided in a plate shape and the fixed contact may be rotated.

[Brief explanation of drawings]

1 to 6 show an example of the implementation of the vehicle headlamp device of the present invention. FIG. 1 is a diagram showing the overall concept, FIG. 2 is an overall circuit diagram, and FIG. 3 is a driving diagram. FIG. 4 is an exploded perspective view of the main parts of the drive section, FIG. 5 is a sectional view taken along line A-A in FIG. 3, and FIGS. 6 A to D are examples of the operation of the rotary plate. FIG. Explanation of symbols, 1... Headlight (tilting member), 12
... Rotating plate, 31 ... Casing, 40 ... Adjustment screw, 45 ... Moving body, 49 ... Drive body,
62... (31) recess, 65... casing.

Claims (1)

[Claims] 1. In a vehicle headlamp device in which the irradiation direction of the headlight can be changed with respect to the vehicle body, a tilting member whose mounting angle with respect to the vehicle body can be changed is supported by the vehicle body or a member fixed to the vehicle body. At the point,
A movable body connected to the tilting member, a drive body for moving the movable body, and a drive unit for rotationally driving the drive body are provided in the casing, and a rotating plate included in a control unit for controlling the drive unit is provided. The moving body and the driving body are arranged coaxially, and the rotary plate is arranged offset from their axes, and a recess formed in the rear part of the casing is configured to rotate in response to the rotation of the driving body. 1. A vehicle headlamp device, characterized in that it is assembled to another casing that is fixed in place by means such as screws.