JPS629074B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headlamp, in particular for a motor vehicle headlamp, of the type having a glass plate and a reflector.

BACKGROUND OF THE INVENTION Conventionally, in the process of manufacturing automobile headlamps, there is a step of mounting a front glass plate, along with any reflectors or other inclusions, on the front side of the headlamp. For the sake of convenience, only headlamps of the type described above will be considered here, but the scope of the invention is not thereby limited to the above-mentioned scope.

Requirements for increased safety have created a need for a device or method that allows a driver to clean the front glass of a vehicle's headlights while driving. It is a well-known place.
In particular, dirt, dust, crushed insects and other filth, which accumulate rapidly during vehicle operation, can significantly reduce the optical efficiency of the headlights, thereby reducing the Visibility while driving is reduced.

For this purpose, at least one wiper is provided which reciprocates in front of the front glass plate of the headlamp, and at least one spray or nozzle is supplied from the cleaning liquid reservoir to cause the glass plate to leak during the reciprocating movement of the wiper device. A similar system has been proposed in the past.

In this type of conventional device, cleaning equipment is attached to the front glass plate of the headlamp. This means that it is necessary to mount instruments such as glass wiper shafts and/or spray supports on top of this. In this case, a suitably shaped headlamp is required for this type of operation, the manufacture of which is naturally complicated.

The present invention aims to eliminate this disadvantage as much as possible by providing an improved headlamp which operates in conjunction with a cleaning system such as that described above.

A headlamp according to the invention of the type having a glass plate attached directly to the reflector or via an interposer includes a glass plate and a reflector (or insert) that extend around the perimeter of the assembly. It has at least one clasp in the form of an elastic clip, the end of which passes in front of the glass pane, cooperating therewith as a mounting support or screw mount for a glass cleaning system, in particular for a glass wiper. It is bent like this.

According to another feature, the headlamp has a member for holding the main clasp in the working position.

According to a preferred embodiment of the invention, the retaining device spans the glass plate and the reflector with a small protrusion on the glass plate that is inserted into a corresponding groove in the clasp, before stopping in place for tightening. It consists of a retaining pawl on the reflector (or insert) with a sliding ridge into which the fixing projection of the clasp slides.

Preferably, the clasp is made of elastic metal and its protruding end is covered with a synthetic resin cap.

According to another feature, the glass plate and the reflector each have corresponding grooves which are provided to form attachment points to avoid lateral slippage of the clasp.

Additionally, the most common method of assembling the windshield and reflector or any other intermediate inserts is through the use of adhesive cords that can hold the headlamp assembly together after drying. It is well known that this is the case. In this case, during gluing, it is essential to prevent mutual movement between the reflector and the glass plate in order to obtain a good quality headlight.

In fact, the mutual position of these two parts is important because the front glass plate has light-spreading stripes, the shape of which is studied as a function of the light rays from the reflector. In this case, the headlamp bulb is usually mounted on a reflector that determines the optical properties of the light rays emerging from it. That is, the mutual position between the front glass and the reflector must be precise for the accuracy of the light beam obtained, so that during bonding the glass plate and the reflector are held firmly together without the possibility of displacement. This is essential.

In order to eliminate this displacement, the present invention provides a headlamp characterized in that this clasp has sufficient force to hold the front glass plate against adjacent parts at least during the adhesive assembly operation. It provides:

The assembly process of this type of headlamp consists of assembling the reflector (or insert) and the glass plate by adhesive cord, placing the clasp in its use position, and fixing obtained in this way by gluing The feature is that there is no mutual movement between the glass plate and the reflecting mirror (or the insert).

Preferably, four clasps are used in the headlight, the first and second pairs acting as forward and return clasps, respectively, during reciprocation of the glass wiper.

According to a variant of the invention, the front end of the clasp is used as a support shaft which can be effectively used as a support for a spray nozzle for cleaning glass plates.

The apparatus of the present invention will be explained below based on the drawings.

The headlamp has, as can be seen in the drawing, a glass plate 10 and a reflector 12 assembled with adhesive cords 24. A clasp 14 is attached to the glass plate 10 and the reflector 12 in the form of a clip. More specifically, this clasp 14 has a bent end, which serves as an abutment 18 for the wiper blade 11, and is provided with a synthetic resin cap 19. Near this cap there is a retaining groove 20 into which a projection 22 of the glass plate is fitted, which completely prevents lateral movement of the clasp. The other end of the clasp 14 has a fixing protrusion 16 that is engaged with a retaining claw 26 of the reflector. As can be seen in more detail from FIG. 2, the groove portions [28 and 30, respectively] of the glass plate and reflector, which are adjacent to each other and constitute the mounting portion, are as follows:
The clasp is located there precisely, but cooperates with the groove 20 and projection 22 to prevent lateral displacement of the clasp. Furthermore, this groove portion allows for immediate positioning of the clasp. By locking as shown by the arrow 32, the protrusion 16 slides on the mounting ridge 25 and is locked to the rear of the use claw (reflector holding claw) 26. At this time, the clasp is in the correct position and can perform a clamping action between the glass plate and the reflecting mirror.

Although the present invention has been described in terms of preferred embodiments, it is intended to cover all modifications within the scope of the claims. More particularly, the method of fixing the front glass plate by means of clasps can be carried out on an intermediate insert mounted on the reflector.

Some preferred embodiments of the present invention are summarized and listed below.

(1) Assemble the reflector (or inserted part) and the glass plate with an adhesive cord, install the clasp at the use position, and use this method to secure the glass plate and reflector (or inserted part) during gluing. 7. A method for assembling a motor vehicle headlamp with at least one clasp as claimed in claim 6, characterized in that all mutual deformations between the parts are avoided.

(2) the use of four clasps per headlight, the first and second pairs each operating as the forward and backward clasps of the windshield wiper during reciprocating motion, respectively; The method of assembling an automobile headlamp described in .

(3) The method for assembling an automobile headlamp according to item 1, wherein the end of the clasp acts as a support for a spray nozzle for washing glass.

[Brief explanation of the drawing]

FIG. 1 shows an axial section (along the section-line in FIG. 2) of a portion of a headlamp according to the invention, FIG. 2 shows a partial front view of the headlamp according to the invention, and FIG. A partial perspective view of the front part of the automobile is shown. 10... Glass plate, 11... Wiper blade, 12... Reflector, 14... Clasp, 18... Butt, 19... Synthetic resin cap, 20... Holding groove, 22... Glass plate protrusion, 26...retaining claw.

Claims (1)

[Claims] 1. A front glass plate is attached to the opening of the reflector, and the outer edge of the reflector and the outer edge of the front glass plate are fastened with at least one elastic clip-type clasp. One end of the clasp that engages with the front edge of the front glass plate serves as an abutting member for regulating the sliding range of the wiper blade of the front glass cleaning device. A car headlight that is bent to protrude from the 2. The automobile headlamp according to claim 1, wherein the reflecting mirror and the front glass plate are provided with a holding member that engages with a clasp. 3. The holding member is composed of a protrusion on the front glass plate that fits into the holding groove of the clasp, and a holding claw of the reflector that engages with the fixing protrusion that is the other end of the clasp. An automobile headlamp according to claim 1 or 2, characterized in that: 4. The automobile headlamp according to any one of claims 1 to 3, wherein the clasp is made of elastic metal and one end thereof is covered with a synthetic resin cap. . 5. Claims 1 to 5, wherein the front glass plate and the reflector each have an adjacent groove portion provided to form a mounting portion for preventing the clasp from sliding in the lateral direction. The automobile headlamp according to any of item 4. 6. The clasp has sufficient force to hold the front glass plate against adjacent parts at least during the adhesive assembly operation. Automobile headlights as described in any of the above.