JPH088005B2 - Vehicle headlamp with irradiation direction correction function - Google Patents

Abstract

PURPOSE:To regulate the direction of irradiation even during failure by providing a biasing force in advance to a base so that when activated by a spring the base lowers the direction of irradiation. CONSTITUTION:A push rod 32 mounted on the lower side of a base 3 is pressed by a compression spring 33 so that the push rod 32 projects outwardly of housing 4, the top portion 32a of the push rod 32 being connected to a running wire 5 via a lever 51. The amount of movement of the running wire 5 is converted to almost its normal direction by the lever 51 and is transmitted to the push rod 32 in such a manner that the running wire 5 is pushed against the biasing force of the compression spring 33 so that the base 3 i.e. a reflecting mirror 2 irradiates a portion at angles desired by the driver. If the running rope 5 is broken, stress of the running wire 5 exerted on the push rod 32 is released and the base 3 is activated by the compression spring 33 so that the base 3 is biased to lower the optical axis of the reflecting mirror 2. Thus the direction of irradiation is regulated downward even during breakage of the running wire 5.

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a headlight mounted on a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle. More specifically, the problem that the direction of irradiation of the headlight changes due to a change in the posture of the vehicle due to a change in the amount of mounting. The present invention relates to a headlight provided with an irradiation direction correction function for eliminating the problem.

2. Description of the Related Art FIG. 7 shows an example of a conventional headlight 100 of this type. A reflecting mirror 101 of this headlight 100 includes, for example, a ball joint 102, a horizontal aiming screw 103, and a vertical aiming screw. It is attached to the substrate 105 by a known means such as 104, whereby the reflecting mirror 101 can be sighted freely. Here, the substrate 105 is mounted on the housing 1 by a rotary shaft 106 provided on, for example, an upper side of the headlight 100 when the headlight 100 is mounted on the vehicle body.
It is attached to 07 so that the substrate 105 can be laid up and down around the rotating shaft 106. At the same time, a moving line 108 is connected to, for example, the lower side of the substrate 105, and the moving line 108 can be freely fed and pulled in by an adjusting mechanism such as a screw feeding mechanism or a step cam mechanism provided in the driver's seat. Has become. The headlamp 100 configured as described above has the substrate 1 in advance.
Aiming of the reflecting mirror 101 is performed with 05 as a reference position, and when the vehicle is in use, for example, the vehicle is lowered to the front due to the amount of the load, etc. When an inconvenience that the value changes is caused, the adjustment mechanism raises and lowers the substrate 105 to make a correction so that an appropriate irradiation direction is obtained.

[Problems to be Solved by the Invention]

However, in the conventional headlight 100 described above, when the moving cable 108 is cut, for example, the substrate 105 is connected to the housing 107 only by the side of the rotating shaft 106 and is rotated. The standard is uncertain, and the solution to this point has been an issue.

[Means for Solving the Problems]

The present invention, as a specific means for solving the above-mentioned problems that occur in the conventional headlight, allows a substrate on which at least one reflecting mirror is radiably mounted to be vertically laid up and down by a rotating shaft in a housing. A headlamp for a vehicle with an irradiation direction correction function for correcting the change in the irradiation direction caused by a change in the posture of the vehicle by remotely controlling the board by a moving cable. A rod is attached, and a spring that biases the substrate via the push rod and biases it in advance so as to make the irradiation direction downward is provided in the housing, and the housing contacts the head of the push rod. A lever for transmitting the movement amount of the moving rope to the push rod is provided, and the movement of the moving rope against the bias of the spring causes the substrate to rotate within a predetermined range. By providing a vehicle headlamp with an irradiation direction correction function, which is characterized by maintaining a prescribed aiming direction by the rotation of this substrate, it is possible to regulate the irradiation direction of the headlight even in the event of a failure. In addition to solving the above-mentioned conventional problems, it is detected that the substrate has exceeded the predetermined range of rotation in the vicinity of the terminal end of the rotation range of at least one rotation side end of the substrate. Irradiation direction correction function, characterized in that detection means is provided, and drive means for activating the rotation axis of the substrate so that the optical axis of the reflecting mirror is directed toward the road side in the traveling direction by the output of the detection means. By providing a headlight for a vehicle with a lamp, the function and effect thereof are further enhanced.

【Example】

Next, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 shows a main part of a vehicle headlamp (hereinafter abbreviated as headlamp) 1 with an irradiation direction correcting function of the present invention. It should be noted that the figure does not necessarily match the detailed shapes of the respective parts shown later, but this is because the figure shows a simplified configuration for easy understanding of the gist of the present invention. A reflector 2 is attached to the headlamp 1 by a ball joint 21, a horizontal aiming screw 22 (see FIG. 2) and a vertical aiming screw 23 on a substrate 3 so that the headlight 1 can be aimed. It is similar to the conventional example in that it can be mounted on the housing 4 so as to freely lie down on the housing 4 by a horizontal rotating shaft 31, but according to the present invention, the lower side of the substrate 3 is shown in FIG. As described above, the push rod 32 is attached. When the push rod 32 passes through the housing 4, the push rod 32 is biased by the compression spring 33 so as to project toward the outside of the housing 4. By this bias, the push rod 32 is pushed toward the push rod 32. In a state where no external stress is applied, the substrate 3 makes the reflecting mirror 2 face downward. At the same time, in the present invention, the push rod 32 has its top portion 32a connected to the moving rope 5 via a lever 51 as shown in FIG. The other end of the moving rope 5 is extended to, for example, the driver's seat in the same manner as in the conventional example, and its operation amount is adjusted by an appropriate means similar to the conventional example such as a step cam device (not shown) provided here. Since the amount of movement of the moving rope 5 is converted by the lever 51 at a substantially right angle, the moving amount of the moving rope 5 is pushed against the biasing force of the compression spring 33 to the push rod 32. Thus, the substrate 3, that is, the reflecting mirror 2 illuminates at an angle desired by the driver. With the above configuration, the headlamp 1 of the present invention can be used as the same as the conventional example in a normal use state. In addition, when the moving rope 5 breaks for some reason, the stress exerted on the push rod 32 by the moving rope 5 is released, so that the substrate 3 is urged by the compression spring 33. The reflecting mirror 2 mounted on the substrate 3 is biased so that the optical axis thereof faces downward. That is, in the headlight 1 of the present invention, the biasing force is applied to the substrate 3 in advance so that the irradiation direction is downward when the moving rope 5 is cut. In this embodiment, the push rod 32 and the compression spring 33 are provided on the lower side of the substrate 3 and the rotary shaft 31 is provided on the upper side. However, the actual arrangement is not limited to the above arrangement. Instead of this, as shown in FIG. 5, the push rod 32 and the compression spring 33 may be provided on the upper side of the substrate 3 and the rotating shaft 31 may be provided on the lower side. However, in this case, the compression spring 33 urges the push rod 32 inside the housing 4 so as to be biased toward the pushing side, and the lever 51 pulls up the push rod 32 against this. It is necessary to make appropriate changes in accordance with the changes in the configuration, such as connecting them. What is shown in FIG. 6 is another embodiment of the present invention. In the previous embodiment, the inconvenience of the prior art is avoided by exclusively setting the optical axis of the substrate 3, that is, the reflected light 2 downward. On the other hand, in this embodiment, in addition to the addition of the push rod 32, the compression spring 33, and the like to the board 3 according to the previous embodiment, the rotation side end portion of the board 3, that is, the lower end side is designed. Detection means 6 for detecting that the rotation range has been exceeded is provided, for example, as an elevation side limit switch 61 and a bow side limit switch 62. At the same time, it is closer to the side road in the traveling direction on the upper end side of the substrate 3, that is, if the vehicle equipped with the headlamp 1 is operated under the regulations of left-hand traffic, the left side (the figure shows this example), When driving on the right side, a solenoid 7 that performs a pulling action at the time of operation is provided at the upper end on the right side as a drive mechanism, and this solenoid 7 is electrically connected to the outputs of the elevation side limit switch 61 and the lie side limit switch 62. There is. With this configuration, in the headlight 1 of this embodiment, when the moving rope 5 is cut, the board 3 has a dip angle of a predetermined angle or more, so that the dip side limit switch 62 also operates. As a result, the solenoid 7 operates to incline the substrate 3 so that the optical axis of the reflecting mirror 2 faces the left side, and illuminates the roadside. In addition, when the pulling force from the outside is applied to the moving rope 5 for some reason and the substrate 3 is directed upward beyond a predetermined range, the elevation side limit switch 61 operates similarly and the solenoid 7 operates. The light beam of the headlight 1 is directed to the roadside opposite to the oncoming vehicle. Incidentally, it is not always necessary to provide both the elevation side limit switch 61 and the bow side limit switch 62 upon implementation, and either one may be selected and implemented as required.

As described above, according to the present invention, the substrate is biased in advance so that the irradiation direction is downward by the biasing by the spring, and the substrate is actuated against the biasing of the spring. Since the headlamp is provided with a rotation within a predetermined range to keep the specified aiming direction by the rotation of the substrate, the reflection attached to the substrate by the bias of the spring even when the moving cable is cut. With the optical axis of the mirror facing downward, the outstanding effect of solving the conventional problems is achieved. Further, detection means for detecting that the substrate has exceeded the predetermined range of rotation is provided near at least one of the ends of the rotation range of the rotation side end of the board, and the output of the detection means is used to detect the above. By adding a driving means for inclining the rotation axis of the substrate so that the optical axis of the reflecting mirror is directed toward the road side in the traveling direction, it is possible to temporarily apply a tensile force from the outside to the moving rope to bring the headlight to the upward state. Even if this happens, the light of the headlight is directed to the road side opposite to the oncoming vehicle, and the effect of blocking the forward irradiation in the aiming direction out of the regulation is exerted.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a vehicle headlamp with an irradiation direction correcting function according to the present invention, and FIG. 2 is II of FIG.
Fig. 3 is a sectional view taken along line -II, and Fig. 3 is also III-III of Fig. 1.
A sectional view taken along the line, FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, FIG. 5 is a sectional view showing another embodiment of the present invention as a main part, and FIG. FIG. 7 is a schematic perspective view showing still another embodiment of the invention, and FIG. 7 is a perspective view showing a conventional example. 1 …… Vehicle headlamp with irradiation direction correction function 2 …… Reflector 3 …… Substrate 31 …… Rotating shaft 32 …… Push rod 32a …… Top 33 …… Compression spring 4 …… Housing 5 …… Motion Cable 51 …… Lever 6 …… Detection means 61 …… Elevation side limit switch 62 …… Bend side limit switch 7 …… Solenoid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Shimamura 1-4-1 Chuo, Wako-shi, Saitama, Ltd. Honda R & D Co., Ltd. (72) Inventor Koichi Nagano 1-12-11 Sakura, Setagaya-ku, Tokyo ( 72) Inventor Naofumi Nomura 2-24-9 Kita-Senzuka, Ota-ku, Tokyo (56) References Jikho 56-48581 (JP, Y2) Jikho 1-16183 (JP, Y2)

Claims (2)

[Claims] 1. A substrate on which at least one reflecting mirror is radiably attached is attached to a housing so that it can be laid vertically in a vertical direction by a rotary shaft, and this substrate is remotely operated by a moving line to cause a change in vehicle attitude. In a vehicle headlamp with an irradiation direction correction function for correcting a change in irradiation direction, a push rod having a top penetrating the housing is attached to the substrate, and the substrate is attached to the housing via the push rod. A spring that is biased in advance so that the biasing irradiation direction is directed downward is provided, and a lever that comes into contact with the head of the push rod and transmits the movement amount of the moving rope to the push rod is provided. Irradiation characterized in that the movement of the moving rope against the bias causes the substrate to rotate within a predetermined range, and the rotation of the substrate maintains a specified aiming direction. Direction correction function with a vehicle headlamp. 2. A detection means for detecting that the substrate exceeds the predetermined range is provided in the vicinity of a terminal end of a rotation range of at least one rotation side end of the substrate, and an output of the detection means. The irradiation direction correction according to claim (1), characterized in that the driving means for inclining the rotation axis of the substrate so that the optical axis of the reflecting mirror is directed toward the road side in the traveling direction is operated. Headlights for vehicles with functions.