JPH0635288Y2 - Aiming device for automobile headlights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an aiming device for a vehicle headlamp.

<Prior Art> Conventionally, various types of aiming devices for automobile headlamps have been proposed, but as shown in FIGS. 6 and 7, the aiming screw 4 linked to the movable member 1 is used. In the aiming device in which the crown gear 6 is attached to the base end of the and the pinion gear 8 attached to the tip end of the operating rod 7 is meshedly connected to the crown gear 6 and the aiming screw and the operating rod are arranged orthogonally to each other. Even if the gear case 9 covering the crown gear and the pinion gear is fixed to the fixed member 2, the insertion hole 11 of the gear case through which the operating rod 7 is inserted must be cut out in a U-shape because of its structure. The operating rod 7 is substantially supported only by the meshing relationship between the crown gear and the pinion gear, so that the operating rod swings unstablely. Therefore, conventionally, the head 7b of the operating rod 7 is inserted into and engaged with the hooking hole 31 of the support piece 30 projecting from the fixing member to stabilize the operating rod. However, the supporting piece is attached to the fixing member.
When forming the hooking holes 31 of 30, since the hooking holes must be formed in a lateral U-shape, a complicated slide mold is used, a hooking hole is formed by post-processing, or a supporting piece is formed. Since it has to be separately molded and fixed to the fixing member by post-processing, there is a problem that the cost becomes high in any case.

<Problems to be Solved by the Invention> The present invention has been made in view of such a conventional problem, and is an automobile headlamp that can stably support the operating rod with a simple structure. The aim is to provide an aiming device.

<Means for Solving Problems> An aiming device for a vehicle headlamp according to the present invention which achieves the above object is equipped with a crown gear at the base end of an aiming screw connected to a movable member and operated on the crown gear. The pinion gear attached to the rod is meshed and linked, and the crown gear and the pinion gear are covered with a gear case,
In an aiming device constituted by fixing the gear case to a fixing member, the tip of the operating rod is projected from the gear case and placed on a support stand projecting from the fixing member, and the head portion of the operating rod is fixed to the fixing member. It is characterized in that it is inserted and supported in the upward U-shaped groove of the support piece projecting from the.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

There are two types of methods for adjusting the optical axis of an automobile headlight: a movable mirror type that moves a reflective mirror with respect to a lamp body, and a movable lamp unit type that moves a lamp unit with respect to a vehicle body. In the present specification, a movable member such as a reflecting mirror or a lamp unit is referred to as a movable member, and a member such as a lamp body or a vehicle body that supports the movable member is referred to as a fixed member. The example shows a movable headlight of a reflector.

In the figure, reference numeral 1 denotes a movable member which is a reflecting mirror, and is supported by a fixed member 2 which is a lamp body by one fulcrum rod 3 and two aiming screws 4 so as to be aiming freely.

The aiming screw 4 has its screw portion 4a attached to the movable member 1
The crown gear 6 is attached to the self-locking nut 5 attached to the base member 4 by screwing the base end 4b so as to rotatably project from the fixing member 2.

The crown gear 6 has a pinion gear 8 attached to the operating rod 7.
, The crown gear 6 and the pinion gear 8
And are covered with the gear case 9.

The gear case 9 is formed in a box shape with an open bottom so as to cover the crown gear 6 and the pinion gear 8, and is fixed to the fixing member 2 with a screw 10, and the tip 7a and the head 7b of the operating rod 7 are fixed. Insertion holes 11a and 11b for inserting and projecting are formed by cutting out in a U shape.

The operating rod 7 is a head for engaging a tool such as a driver.
It has a pinion gear 8 which has a 7b, and which meshes with the crown gear 6 of the aiming screw 4 at the tip 7a. The head 7b of the pinion gear 8 is attached to the upper part of the fixing member (lamp) 2 depending on the installation position of the aiming screw 4. It is formed to have an appropriate length so that it can be positioned, and the tip 7a and the head 7b are inserted through the through holes of the gear case 9.
11a and 11b are respectively projected, and the tip end 7a is placed on a support base 12 projecting from the fixing member 2, and the head 7b is projecting in the upward U-shaped groove 14 of the supporting piece 13 projecting from the fixing member 2. Insert and support. That is, the support base 12 and the support piece 13 are formed so as to project in the same body as the fixing member (lamp body) 2, and the U-shaped groove 15 and the U-shaped groove 15 for engaging and mounting the tip 7a of the operating rod 7 in the respective projecting directions. Upward U-shaped groove 14 for inserting and supporting the head 7b of the rod 7
Is formed.

Thus, when aiming adjustment of the headlight, if the operating rod 7 is rotated by using a tool such as a driver, the aiming screw 4 is rotated via the pinion gear 8 and the crown gear 6, so that Through the locking nut 5, the movable member 1 moves forward or backward about the fulcrum rod 3,
The optical axis of the headlight (reflector) is adjusted.

In addition, a socket fixture is provided in the valve mounting hole 16 of the reflecting mirror 1.
17 is attached, and a socket integrated valve (referred to as H1 valve) 18 is detachably attached to the socket fixture 17, but the notch of the valve flange 19 is shown in the socket fixture 17 as shown in FIGS. 3 and 4. Corresponding to the portion (20), an erroneous mounting prevention piece (21) is formed on the same body so as to project. In this way, by forming the erroneous mounting prevention piece 21 on the socket fixture 17 in a protruding manner, when the valve 18 is erroneously mounted, the valve flange 19
It becomes impossible to attach to the socket fixture 17 by contacting the erroneous attachment prevention piece 21, and it is possible to reliably prevent erroneous attachment of the valve 18. In the figure, 22 is a positioning protrusion corresponding to the round hole formed in the socket fixture 17, and 23 is a set spring for fixing the valve 18 to the socket fixture 17.

In addition, the lamp body 2 is formed with a vent hole 24 for discharging hot air and humidity in the lamp chamber to the outside, and the vent hole 24 is a waterproof vent pipe.
25 is connected. At this time, the adhesive flow groove 26 is formed to project at the connection port 24a of the vent hole 24 as shown in FIG. 5, and the adhesive 27 is flowed through the adhesive flow groove 26. As a result, the adhesive 27 can efficiently flow around the end portion of the ventilation pipe 25 without hanging down, and ensure reliable adhesion without waste.

<Effects of the Invention> The aiming device for a vehicle headlamp of the present invention is thus mounted on a support stand protruding from the gear case with the tip of the operating rod protruding from the gear case, and at the same time the head of the operating rod. Since the support rod is inserted and supported in the upward U-shaped groove of the support piece protruding from the fixing member, the operating rod is not separated from the fixing member not only at the meshing portion of the crown gear and the pinion gear but also at the gear case and the support base. At the same time as being supported in a sandwiched manner, it is also supported by the upward U-shaped groove of the support piece so as not to swing in the left-right direction, so that the operating rod can be stably supported with respect to the fixing member, and a stable aiming operation is possible. Can be done.

Moreover, the support base and the support piece for supporting the operating rod can be formed in the same body as the fixing member, and the upward U-shaped groove of the support piece can also be opened in the protruding direction of the support piece, so that the conventional support piece 30 or the hook hole. Unlike 31, there is no need to form it by post-processing, which simplifies manufacturing and assembly, and can reduce costs.

Therefore, the intended purpose can be achieved.

[Brief description of drawings]

FIG. 1 is a rear view of a headlamp showing an embodiment of the present invention, and FIG.
The drawing is an enlarged sectional view taken along line (2)-(2) of FIG. 1, FIG. 3 is an enlarged sectional view taken along line (3)-(3) of FIG. 1, and FIG. 4 is a socket fixture portion of a reflecting mirror. A front view, FIG. 5 is an enlarged sectional view taken along line (5)-(5) of FIG. 1, FIG. 6 is a perspective view showing a conventional example, and FIG. 7 is taken along line (7)-(7) of FIG. It is an expanded sectional view. In the figure, 1 is a movable member (reflecting mirror), 2 is a fixed member (lamp), 4 is an aiming screw, 4b is its base end, 6 is a crown gear, 7 is an operating rod, 7a is its tip, and 7b is the head. Division, 8
Is a pinion gear, 9 is a gear case, 12 is a support base, 13 is a support piece, and 14 is an upward U-shaped groove.

Claims (1)

[Scope of utility model registration request] 1. A crown gear is attached to a base end of an aiming screw connected to a movable member, a pinion gear attached to an operating rod is meshingly connected to the crown gear, and the crown gear and the pinion gear are covered with a gear case. In an aiming device constituted by fixing the gear case to a fixing member, the tip of the operating rod is made to protrude from the gear case and is mounted on a support stand protruding from the fixing member, and the head portion of the operating rod is fixed. An aiming device for a vehicle headlamp, characterized in that it is inserted and supported in an upward U-shaped groove of a support piece projecting from a member.