JPS6332521Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile headlamp, and more particularly to an improvement in a headlamp in which a reflector equipped with a bulb is supported at three locations.

Conventional headlights of this type have a structure in which the reflector a can be tilted relative to the vehicle body b using one fulcrum mechanism c and two adjustment mechanisms d and e, as shown in FIGS. 1 and 2, for example. The unit U is configured by supporting the support mechanism c at the center position A of the fulcrum mechanism c.
is located on a horizontal line passing through the center B of one adjustment mechanism d, and on a vertical line passing through the center C of the other adjustment mechanism e. Each of the adjustment mechanisms d and e connects brackets provided at the bottom and top of the reflector a, respectively, and screw mountings j fixed to the vehicle body b via ball joints d' and e'. The fulcrum mechanism c connects a support h fixed to the vehicle body and a bracket k provided on the reflector a via a ball joint c'. Then, by rotating each adjusting screw i of adjustment mechanisms d and e, reflector a tilts around center position A of fulcrum mechanism c, thereby adjusting the optical axis position of bulb f attached to reflector a. It is configured so that it can be done. g is a lens.

However, in the above headlight, the adjustment mechanism e and the fulcrum mechanism c are arranged at vertical positions passing through the center of the unit U, so the distance _l1 between the fulcrum mechanism c and the adjustment mechanism d is short, and the unit Since no supporting means is provided beside the side light h of the unit U, there is a drawback that the unit U is susceptible to vibration.

For this purpose, as shown in FIGS. 3 to 5, the fulcrum mechanism c is placed next to the side light h of the unit U, and the adjustment mechanism e is placed on a vertical line of the fulcrum mechanism c. There is a structure in which the distance _l2 between the and adjustment mechanism d is increased. However, compared to the conventional example shown in Fig. 1, the headlight having the longer distance _l2 has a higher degree of inclination than the unit U when the adjusting screw i is moved (rotated) to the same extent. is small, so it is necessary to increase the length of the adjusting screw i in order to obtain the desired light distribution. For that reason,
If adjusting screw i is made longer,
Since the unit U protrudes considerably from the mounting part of the vehicle body b, the screw mounting j fixed to the vehicle body b for screwing the adjuster screw i is likely to wobble, and as a result, the light Since the position of the center of gravity of the unit U changes greatly during axis adjustment, there is a problem in that the headlight moves slightly during vibrations during driving, making it difficult to see the irradiation area.

In view of the above-mentioned circumstances, the present invention aims to provide a headlamp for an automobile that can prevent rattling during vibration during driving.

Hereinafter, details of the present invention will be explained with reference to FIGS. 6 to 15. 6 to 14 show a first embodiment of an automobile headlamp according to the present invention.

This embodiment includes a reflector 1 having a lens 2 disposed in the front opening and a bulb 3 mounted inside;
The reflector 1 is provided with support means (not numbered) that tiltably supports the reflector 1 at three locations with respect to the vehicle body 4, and the support means includes adjustment mechanisms 5 and 6 at two locations and a fulcrum mechanism 7 at one location. The center position A of the fulcrum mechanism 7 is located on the same horizontal line as the center B of the first adjustment mechanism 5, and is located on the same vertical line as the center C of the second adjustment mechanism 6. This point is the same as before.

However, in the present invention, the first adjustment mechanism 5
, adjustment screw 51, and reflector 1
It consists of a spherical arm portion 52 formed at the bottom of the vehicle body 4, and a support base 53 fixed to the vehicle body 4.

That is, the adjusting screw 51 is
As shown in FIGS. 8 to 8, there is a spherical portion 51a formed at one end, and a groove (not shown in detail) provided on the one end surface so that it can be turned with a Phillips and minus screwdriver. (no code)
and a threaded portion 51b carved around the periphery from the spherical portion 51a to the other end. The spherical arm portion 52 is provided on the bottom of the reflector 1 at a position separated from the fulcrum mechanism 7 by a suitable distance L2, for example, on an arm _1a provided at one end of the bottom of the reflector 1 so as to protrude further downward. As shown in enlarged views in FIGS. 9 to 11, the spherical arm portion 52 has a spherical surface having the same center as the spherical arm portion in order to fit the spherical portion 51a of the adjusting screw 51. In addition to forming a seat 52a, an insertion hole 52b is formed for inserting the adjusting screw 51, and a slit 52c extending to the spherical seat 52 is formed on the peripheral side thereof. The support stand 53
As clearly shown in FIGS. 12 to 14, the pedestal portion 53a has screw insertion holes 53b at both ends thereof.
and an upright portion 53c formed upright at the center of the pedestal portion 53a, and the pedestal portion 53a is fixed by a bolt or the like passing through the screw insertion hole 53b. The upright portion 53c of the support base 53 has a cylindrical groove 53 that can engage the spherical portion 62 at a radial position R centered on the center position A of the fulcrum mechanism 7.
d, and a standing portion 53c and a pedestal portion 53a.
The threaded portion 51b of the adjusting screw 51 is shown in FIG.
A screw hole 53e for screwing is provided. The cylindrical groove 53d corresponds to the upright portion 53c of the support base 53.
A spherical part 5 is formed along the upright part of the
2 and has a constant length, and can slide on the horizontal line and along the radial position R while engaging the spherical arm portion 52.

Therefore, the spherical portion 51a of the adjusting screw 51 is fitted into the spherical seat 52a of the spherical arm portion 52, and the threaded portion 51b of the adjusting screw 51 is screwed into the screw hole 53e of the support base 53. By engaging the spherical arm portion 52 with the cylindrical groove 53d of the support base 53, vibrations transmitted to the vehicle body 4 can be prevented.

Specifically, the second adjustment mechanism 6 connects one end of the adjusting screw 51 to the other end of the upper part of the reflector 1 via a ball joint 62, and connects the other end of the adjusting screw 61 to the vehicle body. It is screwed into 4. The spherical joint 62 has a spherical arm formed at one end of the adjusting screw 61, a spherical seat fitted with the spherical arm, and a bracket protruding upward from the other end of the upper part of the reflector 1. It consists of 1b. In addition, in order to screw the other end of the adjusting screw 61 into the vehicle body 4, a screw mounting 63 is attached at a position corresponding to the adjusting screw 61. The fulcrum mechanism 7
is connected to the vehicle body 4 via a pivot joint 71 at one end of the bottom of the reflector 1 near the vehicle light 8. The pivot joint 71 is connected to the reflector 1
A connecting rod 72 formed downward at the bottom and having a spherical arm at the tip, and a support base 73 having a spherical seat fitted with the spherical arm of the connecting rod 72 and fixed to the vehicle body 4. It's summery. Therefore, by turning the adjustment screws 51 and 61,
The reflector 1 is configured to tilt around the center position A of the fulcrum mechanism 7, thereby adjusting the optical axis position of the bulb 3. Note that 8 is a vehicle light.

The headlight configured as described above includes the fulcrum mechanism 7 and the first
Since the distance L ₂ from the adjusting mechanism 5 is long, if an attempt is made to increase the length of the adjusting screw 51, there is a risk that rattling may occur when the vehicle body 4 vibrates. However, in the present invention, the spherical portion 51a of the adjusting screw 51 is fitted into the spherical seat 52a of the spherical arm portion 52 formed on the reflector 1, and the cylindrical shape of the support base 53, which fixes the spherical arm portion 52 to the vehicle body 4, is Since the support base 53 is engaged with the groove 53d, it supports the fitting between the spherical arm portion 52 and the adjusting screw 51, and also supports the fitting of the adjusting screw 51.
The spherical arm portion 52 and the support base 53 relatively disperse and absorb vibrations, thereby suppressing vibrations transmitted from the vehicle body 4 and reliably preventing rattling of the headlight. can. Further, even if the first adjustment mechanism 5 also has a vibration prevention structure, the external shape of the reflector 1 is not impaired, and the design of the headlamp can be kept good.

Figure 10 shows the second automotive headlight according to the present invention.
In this case, the second adjustment mechanism 6 and the fulcrum mechanism 7 are respectively disposed at vertical positions passing through the approximate center position of the unit U, and the first adjustment mechanism 5
is arranged at the bottom of one end of the reflector 1 to shorten the distance _L1 between the fulcrum mechanism 7 and the first adjustment mechanism 5. That is, similar to the first embodiment, this embodiment can basically obtain the same effects as the first embodiment, and also has the above-mentioned distance.
Since L ₁ is shorter than the distance L ₂ of the first embodiment, vibration can be prevented more reliably.

As described above, according to the present invention, the spherical seat of the spherical arm provided on the reflector and the spherical portion of the adjusting screw are fitted together, and the cylindrical groove of the support base fixed to the fixed member and the spherical arm are fitted together. Since the structure is configured to prevent vibration of the vehicle body by engaging the parts, it is possible to prevent rattling during vibration during driving, and there is an advantage that vibration resistance can be improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of a conventional headlamp, FIG. 2 is a bottom view taken in the direction of the arrow in FIG. 1, FIG. 3 is a front view showing another example of a conventional headlamp, and FIG. The figure is the third
FIG. 5 is a bottom view taken in the direction of the arrows in the figure, and FIG. 5 is a partially sectional side view taken in the direction of the arrows in FIG. 3. FIG. 6 is a front view showing the first embodiment of the automobile headlamp according to the present invention, FIG. 7 is a bottom view as seen in the direction of the arrow in FIG. 6, and FIG. 8 is a partial view as seen in the direction of the arrow in FIG. cross-sectional side view,
9 is a front view showing the spherical part, FIG. 10 is a view taken in the direction of the arrow in FIG. 9, FIG. 11 is a sectional view taken along the line XI-XI in FIG. The figure is the first
The arrow view in Figure 2, Figure 14 is the - in Figure 12.
15 is a front view corresponding to FIG. 6 showing a second embodiment of the automobile headlamp according to the present invention. DESCRIPTION OF SYMBOLS 1... Reflector, 2... Lens, 3... Bulb, 4... Vehicle body, 5... First adjustment mechanism, B... Center of first adjustment mechanism, 51... Adjustment screw, 51a... Ball Part, 51b... Threaded part, 52...
...Spherical arm portion, 52a...Spherical seat, 53...Support stand, 53d...Cylindrical groove, 53e...Screw hole, 6
...Second adjustment mechanism, C...Center of the second adjustment mechanism,
7... Fulcrum mechanism, A... Center position of the fulcrum mechanism.

Claims (1)

[Scope of utility model registration request] A reflector having a lens disposed in a front opening and a bulb mounted inside; and support means supporting the reflector so as to be tiltable at three positions with respect to a fixed member; An automobile front panel comprising a second adjustment mechanism and a fulcrum mechanism, and the center position of the fulcrum mechanism is located on the same horizontal line as the center of the first adjustment mechanism and on the same vertical line as the center of the second adjustment mechanism. In the lighting lamp, the first adjustment mechanism includes an adjusting screw having a ball at one end, and a position protruding downward from the fulcrum mechanism at the bottom of the reflector,
and a spherical arm portion having a spherical seat capable of fitting with the spherical portion of the adjuster screw, and fixed at a position facing the spherical arm portion of the vehicle body, and at a radial position centered on the center position of the fulcrum mechanism. a support base having a cylindrical groove formed to be slidable with the spherical arm in an engaged state; the spherical part of the adjusting screw is fitted into the spherical seat of the spherical arm; For automobiles, the arm is engaged with a cylindrical groove of a support base, and the other end of the adjustment screw is screwed into the support base, thereby preventing vibrations transmitted from the vehicle body. Headlights.