JPH0230894B2 - - Google Patents

Abstract

PURPOSE:To minimize the size of the headlight, the lighting angle of which to be adjusted in many steps by a remote control etc. from a driver's seat by providing a rotating panel of a drive control part for controlling a slanting movement on the same axis with a moving body and a driving body connected with the headlight. CONSTITUTION:On a lower part 5a of a holding member 5 to hold a headlight 1 with its upper end to be rotated, a front end 42 of an adjusting screw 40 passing through a center part of a casing 31 of a driving part is pivotted. A cylindrical moving body 45 is engaged with a center part of the screw part 43 of the adjusting screw 40 and a large diameter screw part 47 at the rear end of the moving body 45 is engaged with an internal screw hole 52 of an approximately cylindrical driving body 49 having a wheel gear part 51 in one body. The driving body 49 is supported to be rotated by support parts 36 and 37 of the casing 31 and the wheel gear part 51 is engaged with a worm gear 56 provided on an output shaft 57 of the motor 10 and at the same time, a spar gear part 53 projected at a rear end is engaged with a transmission gear 62 to rotate a rotating panel 12 forming a multi-step control part.

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. An object of the present invention is to provide a new vehicle headlamp device that can be miniaturized as a whole.

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. An object of the present invention is to provide a new vehicle headlamp device in which a control unit equipped with a mechanism for performing the above operations can be compactly incorporated into the headlamp device, thereby reducing the size of the entire device. It is.

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 rotating plate included in a control unit that controls the driving unit is rotated in response to the rotation of the driving body, and the movable body, the driving body, and the rotating plate are coaxial with each other. It is characterized by being arranged.

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 illustrates the entire illumination angle adjustment device for a vehicle headlamp according to the present invention, and is composed of a headlamp 1, a driving 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 fixed to the vehicle body near the headlight 1 and includes 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 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,..., 14E
It consists of Although not shown in the drawings, the rotary plate 12 has gear teeth formed on its outer peripheral surface, and rotates clockwise and in the clockwise direction by the rotation of a gear for driving the rotary plate, which will be described later, which is meshed with the gear teeth. Rotated counterclockwise. Fixed contacts 13A, 13
B,..., 13E and 14A, 14B,..., 14E are attached to appropriate mounting members, and the rotating plate 1
2, the fixed contacts 13A, 13B,
..., 13E and the fixed contacts 14A, 14 of the other group
The relative positional relationship between b, . . . , 14E and the rotary plate 12 is changed as the drive shaft 7 is displaced.

Contact points 13A, 13B, ..., 13E of rotating plate 12
And two conductive parts 15 and 16 (portions shown in the satin pattern in the drawings, and the same applies to other drawings) are formed on the side that is in contact with 14A, 14B, ..., 14E. has been done. Conductive part 1
5 and 16 are substantially semicircular strips formed by removing two locations approximately 180 degrees apart from a circular conductive region, and the removed portions are used as insulating portions 17 and 18.

Fixed contacts 13A, 13B,..., 13E and 14
A, 14B,..., 14E are arranged at appropriate intervals on the rotation trajectory of the conductive parts 15 and 16, and one group of fixed contacts 13A, 13B,..., 1
The fixed contacts 14A, 1 of the other group are arranged so that the rotation locus of the conductive part 3E is located on one of the rotation loci of a substantially semicircular arc obtained by dividing the rotation locus of the conductive part into two at a central angle of about 180 degrees.
4B,..., 14E are arranged so as to fit on the other approximately semicircular arc-shaped rotation locus,
In addition, the fixed contacts in one group and the fixed contacts in the other group with the same numerals are located 180 degrees apart from each other around the center of rotation of the rotation locus of the conductive parts 15 and 16. It is located.
Such fixed contacts 13A, 13B,..., 13E
14A, 14B, ..., 14E are not necessarily defined or restricted to the above-mentioned range, but if a fixed contact in at least one group is in one of the two insulating parts 17 or 18
When the other group of fixed contacts with the same additional code as the fixed contact is contacted with the other insulating part 18 (or 17), and in this state, the other group The arrangement is such that all 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 14
A, 14B, . 16 is maintained at all times. And one connection terminal 19
is connected to the forward rotation side input terminal 21 of the motor 10,
The other connection terminal 20 is connected to a 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..., 2 whose connection to the common terminal 24 is switched by the movable contact 25.
6E. And the switching contact 26A,
26B, ..., 26E are fixed contacts 13A, 13B, ..., 13 of one group of the two fixed contact groups described above.
Each of E is connected to the same additional code. The switch 9 also includes a movable contact 29 having a common terminal 28 connected to the ground circuit 27, and a plurality of switching contacts 30A, 30B, ..., 3 whose connection to the ground circuit 27 can be switched by the movable contact 29.
It is equipped with 0E. And the switching contact 30A,
30B, . . . , 30E are connected to the fixed contacts 14A, 14B, . However,
Fixed contacts 13A, 13B, ..., 13E of one group
constitute a power supply side fixed contact group, and the other group of fixed contacts 14A, 14B, . . . , 14E constitute a ground side fixed contact group.

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,
Select any desired one from 26B,..., 26E and connect the movable contact 25 to it.
The current from the power source 4 is transferred from the common terminal 24 to the movable contact 2.
5→switching contact 26→power supply side fixed contact 13, and furthermore, either one of the conductive parts that is in contact with the fixed contact 13 connected to the switching contact 26 selected by the movable contact 25 15 or 16 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 connected to the selected switching contact 30. 14→selected switching contact 30→movable contact 29→earth 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 section consisting of a contact section and a conductive section is located in the middle of the drive section. It is set up so as to surround the

31 is a casing, which is fixedly attached to the vehicle body. Reference numeral 32 denotes an insertion hole formed in the center of the front wall 33 of the casing 31, and the insertion hole 32 has a substantially regular octagonal shape (see FIG. 4). 34 is a rear insertion hole formed in the center of the rear wall 35 of the casing 31, and the front insertion hole 32 and the rear insertion hole 34 are coaxially provided. Reference numeral 36 denotes an annular support portion protruding from the inner surface of the central portion of the front wall 33 of the casing 31 toward the center of the casing, and 37 represents an annular support portion protruding from the upper wall 38 of the casing 31 toward the center of the casing. This is a central support wall, and a circular support hole 39 facing the support portion 36 is formed at the tip of the central support wall 37 in the center of the casing. still,
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
The movable body 45 is screwed into the screw hole 46, and is 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, the movable body 45 is prevented from rotating, so when the drive body 49 is rotated, it is screwed into the threaded groove on the inner peripheral surface of the support hole 52 of the drive 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.

Next, the control mechanism will be explained.

62 is a transmission gear. The transmission gear 62 is rotatably supported between the center support wall 37 and the rear wall 35 of the casing 31, and is integrally connected to a large diameter gear 63 that meshes with the spur gear portion 53 of the drive body 49. It consists of a small diameter gear 64 formed in.

Reference numeral 12 denotes a rotating plate made of an insulating material such as synthetic resin, and is formed into a substantially disk shape. An insertion hole 65 through which the adjustment screw 40 is inserted is formed in the center of the rotary plate 12, an annular recess 66 is formed in the front surface, and a semicircular belt-shaped groove 66 is formed in the rear surface. Two conductive parts 15 and 16 are formed. 67 is the center support wall 37 of the casing 31
The rotation plate 12 is rotatably supported with respect to the casing 31 by the support projection 67 being engaged with the annular recess 66. Ru. In addition, the rotating plate 12
Gear teeth 68 are formed on the outer peripheral surface of the transmission gear 62, and the gear teeth 68 mesh with the small diameter gear 64 of the transmission gear 62.

Reference numeral 69 denotes a contact plate made of an insulating material such as synthetic resin, and formed into a rectangular plate shape, for example.
It is attached to the rear wall 35 of 1. The contact plate 69 has a large number of through holes 70, 70, . An insertion hole 71 through which the adjustment screw 40 is inserted is formed.

72 is a printed wiring board integrally attached to the rear surface of the contact plate 69;
A contact plate 69 is provided on the surface facing the contact plate 69.
A large number of conductive terminals 73, 73, . . . are printed and formed at positions facing the respective through holes 70, 70, . A notch 74 is formed on one side edge of the substrate 72, and a cord insertion hole 75 is formed in the rear wall 35 of the casing 31 at a position corresponding to the notch 74. 76 is a code. Although not shown in the figure, the printed circuit board 72 has conductive terminals 73, 73,
A printed wiring film extending from ... to the edge of the notch 74 is formed. 77 is an insertion hole through which the adjustment screw 40 is inserted.

78, 78, . . . are spherical contacts made of a conductive material, and each contact 78, 78, . , each contact 78, 78,... and each conductive terminal 73 of the printed wiring board 72,
Coil springs 79, 79, . . . made of a conductive material are inserted in a compressed state between the contacts 73, . ...is rotating plate 12
The rotary plate is biased to ensure contact with the conductive parts 15 and 16 or the insulating parts 17 and 18 formed between the conductive parts 15 and 16, and the coil springs 79, 79, . . . 12 conductive parts 15 and 16 and each conductive terminal 73, 73, . . . of the printed wiring board 72 are electrically connected. Note that 80 is a waterproof cover.

Thus, when the drive body 49 is rotated, the transmission gear 62 having the large diameter gear 63 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 68 that mesh with the second small diameter gear 64 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 62 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 indicated 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 70 are formed in the contact plate 69 as shown in the drawing, any of them can be used as needed to appropriately select the number of control stages within the range of the number of through holes 70. be able to be able to be able to be able to do so. For example, through hole 70 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 at an appropriate staircase of 10 or less steps 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. and a rotating plate included in a control unit that controls the driving unit is rotated in response to rotation of the driving body,
The moving body, the driving body, and the rotary plate are arranged coaxially with each other.

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 is arranged coaxially with the moving body and the driving body. It can be compactly installed in the headlamp device.

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 or the like 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, 40 ... Adjustment screw, 45 ...
Moving body, 49...Driving body.

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,
It has a movable body connected to the tilting member, a drive body that moves the movable body, and a drive unit that rotationally drives the drive body, and a rotating plate included in a control unit that controls the drive unit is connected to the drive body. 1. A vehicular headlamp device which rotates in response to the rotation of the vehicle, and wherein the movable body, the driving body, and the rotary plate are arranged coaxially with each other.