JPS5893637A - Retractable head lamp of automobile - Google Patents

Abstract

PURPOSE:To make it possible to prevent the lowering of the light distribution property of the titled head lamp and to avoid the generation of a glare phenomenon with respect to other cars coming from the opposite direction by a method wherein the head lamp is supported by a lifting device capable of moving vertically through a drive mechanism so that the lamp moves parallel to the main axis thereof while keeping the direction of the main optical axis censtant at all times. CONSTITUTION:When a lighting switch turns ON, a motor link 42 is rotated by 180 deg. to push up a motor rod 41 and so a parallel link mechanism comprinsing a lower link 33 and an upper link 34 are rotated about a pivot shaft 35 so that a lamp housing 22 is moved upward parallely and the head lamp 2 is set at a position where it is used and which is exposed from a lamp housing section 1. In this case, since the lamp 2 is moved by the parallel link, the surface of the lens of the lamp 2 faces the front at all times, the angular error of the main optical axis of the lamp does not take place even when, for example, the motor 8 is erroneously operated and accordingly, the lowering of the light distribution property of the lamp 2 or the generation of the glare phenomenon with respect to the automobiles coming from the opposite direction is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tractor-pull headlamp for an automobile, and more particularly to an improved support mechanism for the headlamp and a tractor-pull headlamp.

Generally, as shown in FIG. 1, a retractable headlamp has a lamp housing part 1' formed in the vehicle body, and a headlamp 2 stored in the lamp housing part 1 so as to be retractable. In other words, when headlamp 2 is not used,
Due to aerodynamic requirements, the headlamp 2 is stored in the lamp housing 1 and the lamp housing 1 is closed with a lid 3.
When the headlamp 2 is used, the headlamp 2 is moved upward from inside the lamp housing 1 to increase the ground clearance of the main optical axis of the headlamp 2 and improve the light distribution characteristics of the headlamp 2. This is intended to reduce the effect of glare on oncoming vehicles caused by principal optical axis errors.

By the way, as a conventional tractor pull headlamp of this kind, the structure of the company, for example, the structure of Q-Utility Publication No. 55-54577, is known. That is, as shown in FIGS. 1 and 2, a bracket 4 that holds the headlamp 2 is rotatably attached to the vehicle body, and a lid is attached to the headlamp 2 and the bracket 4 so as to cover the upper part of the headlamp 2. 3 is fixed to the bracket 4, one end of a lamp rod 5 is pivotally supported, and the other end of the lamp rod 5 is rotatably connected to the other end of a relay link 6 which is pivotally supported on the vehicle body. , one end of the motor link 7 is pivotally supported, and the motor link 7 is connected to a motor 8 as a drive mechanism via a worm gear 9 and a worm wheel 10. There is one in which the other end of the motor rod 11, which is pivotally supported near the rod 5, is rotatably connected. In addition, Figures 1 and 2
In the figure, 15 is a 7-door, 16Fi bumper.

In this type, when the motor 8 is driven, the rotational force of the motor 8 is transmitted to the motor link 7 via the worm gear 9 and the worm wheel 10.
F1180 degrees every time and stops. At this time, the motor rod 11 moves forward and backward as the motor link 7 rotates every 180 degrees, and swings around the vehicle body side pivot point 12 of the six relay links.

As a result, when the relay link 6 moves to the rear of the vehicle, the IIc company Lamblon 5 is pulled and the headlamp 2I
I'i is rotated downward and stored in the lamp storage part 1, while when the relay link 6 moves to the front side of the vehicle body, the lamp rod 5 is pushed up and the headlamp 21- is rotated upward. The lamp is moved so that it is exposed from within the lamp storage section 1.

However, in such a conventional tractor-pull headlamp, the headlamp 2/Ii is supported so as to swing around the pivot shaft 13 of the fourth bracket. The lens surface draws an arc locus with the pivot axis 13 as the center point, and the headlamp 2
The direction of the main optical axis of the headlamp 2 also changes from moment to moment following the movement of the headlamp. However, headlamp 2
To stop and hold the motor in the retracted and closed positions, the motor 8
It is necessary to stop the motor 8 at a predetermined position, but there is inevitably an error in the operation of the motor 8, which makes the stopping position of the motor 8 uncertain. In the position, as shown in FIG. 3, an angular error of the main optical axis 14 of about 0, for example, 1 to 2 degrees occurs. As a result, due to the angular error of the main optical axis 14 of the headlamp 2, the light distribution' of the headlamp 2
There was a risk that the characteristics were degraded, the glare phenomenon, etc. for oncoming vehicles became noticeable, and the safe driving of the own vehicle and oncoming vehicles was impaired.

The present invention has been made based on the above points, and
The purpose of this is to eliminate the angular error of the main optical axis of the headlamp when using the headlamp, and thereby reduce the problem of deterioration of the light distribution characteristics of the headlamp due to the angular error of the main optical axis and the glare phenomenon towards oncoming vehicles. It is therefore an object of the present invention to provide a tractor-pull headlamp for an automobile that avoids the above problems. It is an automobile glue tractor pull headlamp.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

In the first embodiment shown in FIGS. 4 to 7, the headlamp 2ti is retractably stored in the lamp storage part 1 formed in one vehicle body as in the conventional case, but The headlamp 2 is supported by a lifting device fixed to the vehicle body, and a motor 8 serves as a driving mechanism.
By raising and lowering the lifting device, it is possible to move in parallel between the pump use position and the lamp storage position.

In this embodiment, as shown in FIG. 5, the headlamp 2 includes a lamp unit 21, a lamp housing 22 that holds the lamp unit 21, and black polypropylene that covers the periphery of the lens surface of the lamp unit 21. The lamp unit 21 is composed of a molded lamp finisher n and a front wall opening 2 of the lamp housing η.
4, and the lamp housing 22 via the mount ring δ attached to the periphery of the lamp unit 210.
At the same time, the lamp finisher 23IIi is fixed with screws 27 to the rear of the earthen wall of the lamp housing n, and a predetermined screw is fixed to the lower part of the side wall of the lamp housing n between it and the lamp housing 22. It is secured with screws with a gap between. Note that a notch groove 28a is provided on the left side and lower side of the mount ring b of the lamp unit 21.

2Bb is formed, while these notch grooves 28a, 28bK
Screw insertion holes 29a and -29b are formed in the front wall portion of the corresponding lamp housing η, and the notch groove 28a is provided with screw insertion holes 29a and -29b.

2Bb and screw insertion holes 29a and 29b with adjustment screws 3.
0 is inserted and locked, and the main optical axis of the headlamp 2 is adjusted.

Further, in this embodiment, the lamp housing 22 is attached to a lamp bracket 32 fixed to the radiator core support 31 via the lifting device 4, as shown in FIGS. 5 and 6. Lifting device 20F
i, a lower link having a pair of left and right link arms 33a and 33b, and a pair of left and right link arms 34;
A parallel link L is constructed with the upper link theory having a and 34b. That is, one end of the link arm 33a, 33b of the lower link is connected to the lower mounting piece 36a, 36 of the lamp bracket 32 via the pivot shaft 5.
b, and the link arm 33a,
The other end of 33b is connected to the lamp housing η via a pin 37.
It is pivotally supported by lower fastening pieces 38a I 38b provided on the front side edge of. Also, the above-mentioned upper link 34 companies are arranged above the above-mentioned p link arm parallel to the lower link, and this upper link-like link arm 34a,
One end of the link arm 34b is pivoted to the upper mounting piece 39a and 39b of the lamp bracket 32 via a pivot 35', and the other end of the link arm 34a, 34b is connected to the front side of the lamp housing n via a pin 37''. Upper fastening pieces 40a and 40b K provided on the edges are pivotally supported.The lower link, upper link 340, and each link arm 3
The headlamp 2 side mounting portions of 3a 933b and 34a I 34b are covered with the lamp finisher n.

And one link arm 33a of the four link wings.
One end of a motor rod 41 is pivotally supported at the intermediate portion, and the other end of this motor rod 41 is connected to a motor link 42 that rotates and stops every 180 degrees by a motor 8 serving as a drive mechanism. For this reason, motor link 4
2, the motor rod 41 is pulled or pushed up, and the lower link swings about the pivot point on the vehicle body side. And also, the link arm 34a of the upper link theory,
34b, both sides of the lid 3 are fixed with screws 43 so that the surface of the lid 3 is approximately parallel to the link arms 34a and 34b of the upper link. Accordingly, the lamp storage section 1 is opened and closed. In FIG. 5, reference numerals 45 and 45 indicate bolts, stud holes, and bolts for fixing the lamp bracket 32 to the radiator support, and a motor mounting portion formed on the lamp bracket 32 manufactured by 46.

Furthermore, in this embodiment, the lamp housing section 1 is formed between the radiator grille t'-) 31 and the radiator grille 47 disposed on the front of the vehicle body, but the lamp housing section 1 is formed between the radiator grille 47 disposed on the front surface of the vehicle body. A lariat grille 47 corresponding to the front surface of the lamp 2 is provided with an opening for passing.
4 are worn.゛And this cover 49 is
A transparent lens 51, such as tempered glass, is fitted into a rectangular frame 50 made of synthetic resin with an adhesive. Projecting pieces 52a extend rearward on both sides of the edge.

2b, 52C, and 52d are integrally protruded, and the protruding piece 52a inside the upper edge between the frames is connected to the radiator core support 3.
1. Screw the projecting pieces 52b on the outside of the upper edge of the frame 50 to the brackets (not shown) fixed to the front fender 54, respectively, to the radiator grill mounting brackets (not shown) fixed to the front fender 54. On the other hand, the protruding piece 5 on the lower edge of the frame 50
2C and 52d are attached to the vehicle body by screwing them onto the front apron 53. In addition, in order to clarify the link structure, FIG. 6.7 shows a state in which the lamp finisher n is removed.

Therefore, according to the automobile tractor-pull headlamp according to this embodiment, when the headlamp 2 is used, it is only necessary to turn on the lighting switch (not shown), and the headlamp 2 can be turned on by turning on the lighting switch. Interlockingly, it moves from the lamp storage position shown in FIG. 6 to the lamp use position shown in FIG. 7. At this time, the lamp case
In the handle position, as shown in FIG. 6, the motor rod 41 and the motor link 42 are in an overlapping state 11, and the connection point P1 between the motor rod 41 and the lower link 33 and the rotation center convergence of the motor link 420 are The axis length 4 connecting the lower link is minimized, and the link arm 33a of the lower link,
33b #'i Located below the horizontal line. When the lighting switch t is turned on from this state, as shown in FIG. The motor rod 41 is pushed upward, and the motor rod 41 and the motor link 42 stop in a straight line sandwiching the connection point P between them, and the connection point P between the motor rod 41 and the lower link is stopped.
Axis length 4 connecting □ and motor link 420 rotation center P0
becomes maximum. At this time, the link arm 33a t 33 of the lower link blade connected to the motor rod 41
b rotates upward to a position above the horizontal line about the vehicle body side pivot point, that is, the pivot a, and moves the lamp housing n upward. In this state, the link arm 34a of the upper link supports the lamp housing n together with the lower link 33.

34b rotates about the pivot point on the vehicle body side, that is, the pivot 35', in parallel with the link arms 33a and 33b of the lower link.
The headlamp 2 is moved parallel upward by the parallel link consisting of the lower link wing and the upper wing link 34 while remaining in the lamp retracted position, that is, with the lens surface of the headlamp 2 facing forward. 2 is set at a lamp use position exposed from the lamp storage section 1.

In this way, the headlamp 2 moves in parallel from the lamp storage position to the lamp use position, so the lens surface of the headlamp 2 always faces the front.
Even if a difference in gloss occurs in the operation of the motor 8, as shown in FIG. 8, only the upward stroke of the headlamp 2 changes, and no difference in the angle of the main optical axis 140 of the headlamp 2 occurs. As a result, the problem that the light distribution characteristics of the four-head lamp 2 deteriorates due to the angular error of the main optical axis 14 of the spectral lamp 2, and the glare phenomenon toward oncoming vehicles becomes noticeable, is effectively eliminated.

Conversely, when storing the headlamp 2 in the lamp use position, it is sufficient to turn off the lighting switch (not shown), and the headlamp 2 is turned off as shown in FIG. 7 in conjunction with the turning off operation of the lighting switch. The lamp is moved from the lamp use position to the lamp storage position shown in FIG. That is, the motor 8 operates in conjunction with the OFF operation of the lighting switch, and the motor link 42 rotates to a predetermined position.
is pushed down, and accordingly, the lower link 41 connected to the motor rod 41 rotates downward about the pivot axis. As a result, the headlamp 2, which is fully supported by the parallel link consisting of the lower link 33 and the upper link, moves downward in parallel while maintaining its posture in the lamp use position, and is set at the lamp storage position. In this state, the lens surface of the headlamp 2 faces the front, and a passing opening 48 is provided in the member that closes the front surface of the headlamp 2. Since the cover wings are attached, even if you perform the passing operation 1 when the headlamp is retracted, the headlamp 2
The beam from the vehicle is irradiated to the outside of the vehicle through the cover 49, making it possible to alert oncoming vehicles and the like. Furthermore, since the passing opening 4 is covered by the cover 49, there is no concern that air resistance will increase at the passing opening 48 portion when the vehicle is running.

In the above embodiment, the lower link 33 is driven by the motor 8, but the invention is not necessarily limited to this, and the motor 8 may also drive the upper link. . Further, the shape of the lower link and upper link U, the vehicle body, and the attachment point to the headlamp 2 may be modified as appropriate. Furthermore, in the above embodiment, the cover 49 Fi and the transparent lens 5
1, but it is not necessarily limited to this, and may be formed using a transparent colored lens. In this case, as a transparent colored lens, for example, a blackened smoke lens (clear lens [lens 1 in which black material particles are mixed with 4. If you use a lens that has been treated with a lens, etc.), the cover 49 part will be dark, so when the headlamp 2 is turned on, the IIcF1 cover 49s will suddenly become brighter, which will reduce the degree to which it will alert oncoming vehicles, etc. In addition to this, when the headlamp 2 is in use, it also serves as a cover for the inside of the lamp storage section 1. Further, if a transparent colored lens is used, for example, in the color of the vehicle body, the appearance quality can be improved by providing a sense of unity with the vehicle body.

In addition, in the plan view of the vehicle body shown in FIG. 9, the front edge of the vehicle body has both sides tilted backwards and forwards with respect to the center line Ox extending in one longitudinal direction of the vehicle body, as has often been seen in recent years, resulting in air resistance. However, in such a case, since the lid 3 is also formed parallel to the front edge of the vehicle body, the pivot shaft 35a of the lid 3 is also parallel to the front edge line of the vehicle body, that is, aligned with the center line. On the other hand, the lid 3 is tilted by an angle α so that the gap between the lid 3 and surrounding vehicle body members is constant when the headlamp 2 is raised and lowered. Therefore, when the vehicle body is viewed from the front, as shown in Fig. 10, the locus of the lid 3 is on the plane A perpendicular to the pivot axis 35a, so that the displacement of ■X in the vehicle width direction when descending and ascending. arise. This also applies to links 33 and 34 (headlamp 2). For this reason, when viewed from the front, if the angles between the lid 3 and the link kudzu 34 are different, it will look unnatural because the gap between them in the vehicle width direction will be noticeable when ascending and descending.゜Such a phenomenon is caused by the difference in angle between the lid 3 and the link 34 when they rise and fall, so the lid 3 should be set parallel to the link 34 as in the above embodiment. For example, misalignment between the headlamp 2 and the lid 3 can be prevented. Furthermore, the vehicle body side members such as the 7-door 15 and the headlamp 2
In order to eliminate the discrepancy, that is, to make ΔX in FIG. 10 O, it is sufficient to arrange the links so that the stop positions of the links & 34 during ascending and descending are at the same angle with respect to the horizontal line.

Next, a second embodiment shown in FIGS. 11 to 13 will be described.

In this embodiment, the elevating device 9 is different from the first embodiment, and consists of a drive wire W that moves the headlamp 2 up and down, and a guide member G that holds the headlamp 2 so that it can move up and down.

As shown in FIGS. 11 and 12, the drive wire W consists of a pair of wires 60a and 60b.
One end of one wire 60ati is connected to a rotating shaft 61 that is rotated forward and backward by a motor 8 as a drive mechanism, and after passing it through a pulley 62 provided at the upper part of the vehicle body, the wire is attached to the lower part of the side wall of the lamp housing η. The other end is connected to the upper part of the connecting body 63, and the other wire 6Q
In b, one end is connected to the rotating shaft 61, passed through a pulley provided at the lower part of the vehicle body, and then the other end is connected to the lower part of the wire connecting body 8.

Further, as shown in FIGS. 11 and 13, the guide member G is composed of a pair of winding springs 65a, 65b, 65C, and 65d disposed on both sides of the headlamp 20. .

``The lower ends of 65C and 65d are a pair of front and rear spring winding shafts 7) which are pivotally supported on the vehicle body at the bottom of the headlamp 20.
66a * 66b, and the upper ends of the spiral springs 65a, 65b, 65C, and 65d are fixed to mounting brackets 57 provided on both upper sides of the lamp housing n.

Furthermore, in this embodiment, the lid 3 is pivotally attached to a bracket provided on the radiator chassis (not shown) near the rear edge with a pivot lug.
A lid opening/closing wire brocade is fixed on both sides of the rear edge, one end of which is connected to a rotating shirt (61). A guide protrusion 71 is provided on the back surface of the front edge of the lid 3, and the guide protrusion 71 slides into contact with a protrusion 70 having a semicircular arc cross section provided on the upper part of the lamp housing η. They are connected via a support rod 72 to prevent looseness between the guide protrusion 71 and the protrusion 70.

Note that the cover chrysanthemum and other structures are the same as those of the first embodiment.

Therefore, according to the retractable headlamp according to this embodiment, when the headlamp 2 is retracted, one wire 5oaFi of the drive wire W is in a state where the rotating shaft 61 is also pulled out as shown by the solid line in FIG. , the other wire 60b is wound around the rotating shaft 61, and the spiral springs 65a to 65d
#i, as shown in Fig. 13, the spring winding shaft') 6
6a * 66b K is in a state of being observed, and furthermore, the lid opening/closing wire 6s is in a state of being pulled out from the rotating shaft 61.

In order to move the headlamp 2 from this state to the lamp use position, it is sufficient to turn on a lighting switch (not shown), and in conjunction with this lighting switch, the motor 8 rotates forward, and the rotating shaft 61 rotates in the direction indicated by the arrow. Rotate in the input direction. In this state, one wire 60a of the drive wire helmet is wound around the rotating shaft 61, and
Since the other wire 60bti is pulled out from the rotating shaft 61, the headlamp 2 moves upward as the drive wire W moves. At this time, headlamp 2
As the springs 6Sa to 65d are raised, the springs 6Sa to 65d are pulled out from the spring winding shafts 6&a, 66b, and the tension of the springs 65a to 65d restricts the deflection of the headlamp 20 in the vehicle width direction.
Additionally, as the headlamp 2 moves upward, the lid opening/closing wire is wound around the rotating shaft 61.
Gahe? Although it will open following the playing card 2, since the guide protrusion 71 of the lid 3 is always in sliding contact with the protrusion 70 of the headlamp 2, swinging of the headlamp 20 in the longitudinal direction of the vehicle body is effectively controlled. .

In this way, the headlamp 2 is
As shown by the two-dot chain line in FIG. 3, the lamp is set at a position where the lamp is exposed from the lamp housing 1.

Conversely, when moving the headlamp 2 from the lamp use position to the lamp storage position, it is sufficient to turn off the lighting switch (not shown), and the motor 8 reverses in conjunction with the off operation of the lighting switch. , rotating shaft 7
61 rotates in the direction of arrow B. In this state, the drive wire W moves in the opposite direction to when the headlamp 2 is raised,
The headlamp 2 is lowered while being guided by the spiral springs 65a to 65d, and the lid 3 is operated to close the lamp storage section 1, so that the headlamp 2 is set at the lamp storage position.

In the above embodiment, a pair of spiral springs 65M to 65d as guide members G are provided on each side of the headlamp 20, but one pair may be provided on each side of the headlamp 20. Furthermore, it is not always necessary to use the spiral springs 65a to 65d as the guide member G. For example, as shown in FIG. The lifting device column according to the present invention is not limited to those shown in each of the above embodiments, and for example, a pair of arms The X-shaped arm may be used to support the headlamp 2 in parallel movement up and down, and the other end of one arm pivoted to the vehicle body can be used to support the head lamp 2 in a sliding manner. Of course, the design can be changed as appropriate, such as by attaching it to the lamp 2 and swinging this arm to raise and lower the headlamp 2 in parallel motion. Further, in each of the above embodiments, the motor 8 is used as the drive mechanism, but the drive mechanism is not necessarily limited to this, and a vacuum actuator or the like may also be used. Further, in each of the embodiments described above, a passing opening 48 and a cover 49 are provided to enable a passing operation when the headlamp 2 is stored, but it goes without saying that the present invention can be applied to those without these. It is.

As explained above, according to the automobile tractor-pull headlamp according to the present invention, the headlamp is supported so as to be movable in parallel by the lifting device that is moved up and down by the drive mechanism, so that the direction of the main optical axis of the headlamp can be adjusted. It can be kept constant at all times, eliminating the angular error of the main optical axis of the headlamp when using the headlamp, thereby reducing the deterioration of the light distribution characteristics of the headlamp and the glare phenomenon towards oncoming vehicles due to the angular error of the main optical axis. etc. can be avoided 0

[Brief explanation of the drawing]

1st V! A perspective view of a car equipped with a retractable headlamp manufactured by J Company, Figure 2 shows an example of a conventional automobile glue, and a tractor-pull headlamp in Figure 1, a cross-sectional view taken along the center line - summer line, and Figure 3 shows operating errors in the drive mechanism. 4 is an explanatory view showing the main optical axis direction of the headlamp according to the present invention, FIG. 4 is a perspective view of the main part showing the first embodiment of the L) lactable headlamp for an automobile according to the present invention, and FIG. 5 is an exploded perspective view of No. 4 WJ of the company. Figure 6 is an explanatory diagram showing the operation of the lifting device when the headlamp is retracted,
An explanatory diagram showing the operation of the lifting device when using the 7th stud headlamp, Fig. 8 is an explanatory diagram showing the headlamp and main optical axis direction due to the operation error of the drive mechanism, and Fig. #19 is an example of the actual axle shown in Fig. 4. A plan view of an automobile iwrm to which the structure is applied, a front view of the left lamp part seen from the direction of the arrow in FIG. FIG. 12 is an explanatory diagram showing the operation of the drive wire when the headlamp is stored and in use. FIG. 13 is an explanatory diagram showing the operation of the guide member when the headlamp is stored and in use. FIG. 3 is a cross-sectional view showing a modified example of the guide member. L...Link mechanism W...Drive wire G...
・Guide member 1...Lamp storage part 2...
Headlamp 8...Motor (drive am) prisoner
... Lifting device 22 - ... Lamp housing 32 ... Lamp bracket ( ... Lower link fitting ... Upper link 49 ... Cover patent applicant Nissan Motor Co., Ltd. Group 1 No. 21! I No. 8 Figure 9 Figure 10 Figure 53 49 Figure 1f Figure 131! I? Figure 14

Claims (1)

[Claims] l) An automobile tractor-pull headlamp in which a headlamp is supported on a vehicle body so that it can freely protrude and retract, and the headlamp is supported so that it can be raised and lowered by a drive mechanism and can be moved in parallel by a device. An automobile glue tractor pull headlamp characterized by: 2) The lifting device has a lower link whose i end is pivotally supported on the vehicle body and the other end is pivotally supported on the headlamp, and the lower link is arranged parallel to the lower link, and one end is pivotally supported on the vehicle body and the other end is pivotally supported on the headlamp. It consists of a parallel link constituted by a rear link whose other end is pivotally supported, and the parallel link is characterized by being connected to a drive mechanism so as to swing around a pivot point on the vehicle body side as a rotation center. 9) A lactable headlamp for an automobile according to claim 1. 3) The above-mentioned elevating device is characterized in that it is composed of a drive wire that has one end connected to the headlamp and the other end connected to a drive mechanism, and a guide member that holds the headlamp so that it can be moved up and down. An automobile tractor-pull headlamp according to claim tH1.