JPH0635287Y2 - Headlamp sighting device - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a vehicular lamp, and more particularly, to a structure of a sighting device provided in a headlamp or the like for adjusting an irradiation direction.

[Prior art]

The structure of the aiming device conventionally provided in this type of headlamp is as shown in FIG. 3. For example, a movable part 21 such as a reflecting mirror is provided with a spherical part which is mainly rotatable in one direction. Attach a certain nut 22a with a nut receiving portion 22b having a spherical receiving portion corresponding to the spherical portion and a nut pressing portion 22c, and attach the adjusting nut 22 with a screw or the like, and attach the adjusting nut 22 to a fixing portion 24 such as a housing. A rotatably mounted adjustment screw 23 is screwed onto the ball joint, which is provided at the vertical adjustment point UD and the left and right adjustment point LR on the rear side of the movable part 21 such as a reflecting mirror as shown in FIG. By rotating the adjusting screw 23 about a fulcrum P which is rotatable by means such as the above, aiming can be performed. At this time, the adjusting nut 22
The reason why the structure such as a spherical part is provided so as to be rotatable is to prevent the adjusting nut 22 from being distorted because the angle between the movable part 21 and the fixed part 24 is changed by adjusting the sighting. By doing so, it is possible to prevent the adjustment screw 23 from becoming unrotatable and unable to be adjusted due to the above-mentioned strain force.

[Problems to be solved by the device]

However, the above-described conventional aiming device is located on the back side of the headlamp, and since this aiming work is performed in a state where it is attached to the vehicle, the adjustment position is close to the rotating part such as the engine, and the work is not performed. In addition, it caused a problem that it was dangerous. Further, although the adjusting nut is rotatable, the effect of absorbing the strain force is recognized, but the headlamp moves in an arc shape around the fulcrum P, and the position with respect to the adjusting screw moves linearly. Since even the deviation is not absorbed, the rotational force of the adjusting screw becomes uneven, resulting in a problem that the work becomes difficult.

[Means for solving problems]

The present invention is, as a concrete means for solving the above-mentioned conventional problems, in a headlamp aiming device in which a mounting angle of a movable part such as a reflecting mirror is variable with respect to a fixed part such as a housing. A pipe-shaped receiving portion provided on the back surface of the movable portion and provided with slots along the axial direction, a case portion fixedly provided to the fixed portion, and an adjustment nut rotatably mounted in the case portion. A nut assembly portion comprising a crown gear-shaped adjustment gear fixed to the adjustment nut and a driver receiving opening opened in a substantially funnel shape as desired from the side surface of the case portion to the adjustment gear,
A screw part screwed into the adjusting nut of the receiving part, a plate-like part provided at the tip of the screw part and fitted in the slot of the receiving part, and a plate-like part further provided at the tip of the plate-like part of the receiving part. A headlamp aiming device having a structure including an adjusting screw part having a ball part slidably fitted in a hollow part and an adjusting screw part is provided to solve the above-mentioned conventional problems. is there.

【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 headlamp aiming device of the present invention, and only the one provided at the position of the left and right adjustment points LR described in the conventional example is shown to facilitate understanding of the description. is there. Reference numeral 1 in the figure denotes a movable part such as a reflecting mirror, and the movable part 1 is a pipe-shaped slot having at least one opening and a hollow part 2a, and a slot having an appropriate width along the axial direction. The receiving portion 2 provided with 2b is fixed by a method such as screwing. Further, one case 4a is fixed to the fixed portion 3 such as one housing, and the case 4a is rotatably held by an adjusting nut 5 having a substantially cylindrical adjustment gear 6 on the outer circumference thereof. It is covered with the other case 4b so as to wrap it. At this time, a funnel-shaped driver receptacle 4c is opened in the other one of the cases 4b so that the tip end thereof engages with the adjusting gear 6 when a cross-shaped driver is inserted. There is. The adjusting nut 5 of the nut assembly portion 4 has a ball portion 7a slidably fitted into the hollow portion 2a of the receiving portion 2 and a groove width of the slot 2b provided in contact with the ball portion 7a. A plate-shaped portion 7b whose two surfaces are machined so as to be fitted, and an adjusting screw portion 7 which is screwed over almost the entire length to form a screw portion 7c.
Are screwed together. FIG. 2 is a sectional view showing this state in more detail. When aiming with the aiming device of the present invention thus formed, the adjustment gear 6 and the adjustment nut 5 are rotated by inserting a cross-shaped screwdriver into the driver receiving port 4c and rotating, and the adjustment is performed. Since the screw portion 7c of the adjusting screw portion 7 screwed to the nut 5 is prevented from rotating by the slot 2b and the plate-like portion 7b, the screw portion 7c moves back and forth in the axial direction, and this movement also moves the movable portion 1. Aiming is done.
At this time, the movable part 1 has an arc motion about the fulcrum P described in the conventional example, and the adjusting screw part 7 has a linear motion, so that the position where the two are joined is displaced and joined. A change in angle occurs, but this shift and change are absorbed by the fact that the ball portion 7a is slidable in the hollow portion 2a, and the angle is changed by performing the action of a universal joint in the shape of a ball. Changes will be absorbed. In this embodiment, the fixed part is a housing and the movable part is a reflecting mirror. However, the fixed part is a vehicle body and the movable part is a housing. The entire headlamp is moved for aiming. It goes without saying that it can be applied to.

[Effect of device]

As described above, according to the present invention, the headlamp aiming device has a crown gear-shaped adjustment gear fixed to a rotatable adjustment nut, and a driver socket is provided in a case in which the adjustment nut is housed to provide a driver. Since the adjusting screw is rotated by meshing with the adjusting gear, the adjusting screw can be rotated in a direction perpendicular to the axial direction of the adjusting gear. For example, it is possible to aim from above the engine room and facilitate the work. In addition to the effect, it also brings the effect of increasing the safety by keeping the work position away from the rotating part such as the engine. Further, by slidably fitting the receiving portion and the adjusting screw portion, the problem of positional deviation occurring between the two is solved, and thus smooth work can be performed without causing unevenness in rotational force. Also plays.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of a headlamp aiming device according to the present invention, FIG. 2 is a sectional view taken along the line II--II of FIG. 1, and FIG. FIG. 4 is a perspective view showing a part, and FIG. 4 is an explanatory view showing an example of a position where this aiming device is provided. 1 ...... Movable part 2 ...... Receiving part 2a ...... Hollow part, 2b ...... Slot 3 ... Fixed part 4 ... Nut assembly part 4a, 4b ...... Case, 4c ...... Driver socket 5 ...... Adjusting nut 6 …… Adjustment gear 7 …… Adjustment screw part 7a …… Ball part, 7b …… Plate shaped part 7c …… Screw part

Claims (1)

[Scope of utility model registration request] 1. A headlamp aiming device in which a mounting angle of a movable part such as a reflecting mirror is variable with respect to a fixed part such as a housing, wherein the aiming device is a pipe-like member provided on a rear surface of the movable part in an axial direction. A receiving portion provided with a slot along with, a case portion fixedly provided to the fixed portion, an adjusting nut rotatably mounted in the case portion, and a crown gear-like adjusting gear fixed to the adjusting nut. A nut assembly portion comprising a driver receiving opening opened in a substantially funnel shape as desired from the side surface of the case portion to the adjustment gear,
A screw part screwed into the adjusting nut of the receiving part, a plate-like part provided at the tip of the screw part and fitted in the slot of the receiving part, and a plate-like part further provided at the tip of the plate-like part of the receiving part. A headlamp aiming device having a structure including an adjusting screw part having a ball part slidably fitted in a hollow part and an adjusting screw part.