KR100209069B1 - Light assembly - Google Patents

Abstract

The vehicle headlight assembly passes through the reflector body 10 having a rear bulb receiving hole 14 surrounded by an outer sleeve 16. The bulb holding crimp 34 includes a ring 36 with a slot 48 at its inner side such that it is anchored to the sleeve 16 and can pass through the mounting lug 24 on the bulb flange. The mounting lug 24 is forced by a spring arm 42 on the ring 36 with respect to each support surface 22, 23 in the sleeve 16. The support surfaces 22, 23 are each spaced apart from the slot 48 along the circumference and are disposed between the respective stops 26 and the inclined surfaces 30, 32 on the compact 34.

Description

Lamp assembly

1 is a partial axial cross-sectional view of a headlight assembly implementing the present invention.

2 is a partially enlarged cross-sectional view of FIG.

3 is a partial plan view of the assembly.

4 is a partially enlarged side view of the assembly.

* Explanation of symbols for main parts of the drawings

1 reflector body 14 bulb storage hole

16: sleeve 22, 23: support surface

24: mounting lugs 30, 32: inclined surface

36: ring 48: slot

The present invention relates to a lamp assembly, in particular but not limited to a conventional quartz halogen H4 bulb mounted and used vehicle headlight assembly. The quartz halogen H4 bulb is a bulb with an annular mounting flange with three outwardly projecting lug lugs.

The vehicle headlight assembly is usually provided with a dish reflector body having a front bulb opening, a reflective surface and a rear bulb receiving hole surrounded by an outer sleeve, the sleeve being secured to the bulb mounting flange by respective bulb placement lugs. It has support surfaces spaced along the circumference to engage. In the case where the dish-shaped body and the outer sleeve are molded from a suitable heat resistant synthetic resin composite, there has conventionally been molding slots spaced apart circumferentially at the rear end of the sleeve wall, the slots to accommodate each bulb placement lug. The dimensions and arrangement of the are determined. However, the slots molded as described above are detrimental to the mold flow characteristics of the synthetic resin material during the molding operation, and as a result, it is difficult to maintain a constant molding operation. In particular, it is important to ensure the precise shaping of the slot, since the base of the slot forms a supporting surface that engages the bulb placement lug and accurately positions the filament of the bulb with respect to the optical reflecting surface. Additionally, the various types of headlight assemblies described above may be used to place the bulb in place with lugs that engage each support surface using removable or hinged springs or other retainers that engage the sleeve and engage the bulb. Keep it. In most cases such removable or replaceable springs or other retainers require additional parts on the sleeve so that they can be inserted into the lamp assembly automatically in some cases. Is not easy. Such additional components also impede the mold flow, resulting in inaccurate reflector surfaces.

It is an object of the present invention to obviate or reduce at least some of the above mentioned disadvantages.

A dish-shaped body having a rear bulb receiving hole surrounded by an outer sleeve having a support surface spaced along the periphery so as to be engaged by respective bulb placement lugs on the front opening, the inner reflective surface and the mounting flange of the bulb according to the invention; And a lamp assembly comprising retaining means for retaining the lug in engagement with each support surface of the sleeve when in use, the retaining means being securely mounted relative to the sleeve and having slots spaced along the edge of the inner diameter. And each slot is circumferentially offset relative to each support surface and permits passage of each bulb placement lug if the mounting flange passes through the ring with lugs aligned to the slot. Sized, the retaining means further comprising an elastic member anchored to the ring and biased towards each support surface. And the elastic member acts to push the lugs for each of the support surfaces when used.

The retaining means used in the lamp assembly according to the invention eliminates the need for a slot at the rear end of the sleeve wall and also hinges or removable hinges that must be pivoted out or completely removed before the bulb is inserted into the bulb receiving hole. The need for retaining springs or other retaining elements eliminates this.

In a preferred embodiment, the elastic members are molded integrally with the ring.

In a preferred embodiment, the ring is provided with a collar surrounding the sleeve, the collar having a plurality of inward barbs or sprags engaged with the outer surface of the sleeve to prevent release of the ring from the sleeve. ) Is provided.

In a typical embodiment, each support surface is formed between an inclined surface and a stop disposed between the support surface and each slot in the ring, the inclined surface and the stop being supported by respective elastic members. When forced to engage the surface it acts to limit the circumferential movement of the associated lugs.

Most commonly, the ring and elastic member are molded from a suitable elastic sheet metal, each elastic member having a spring arm having one end anchored to the ring and extending from each slot towards the associated support surface and disposed on the support surface. It is desirable to be in the form.

In order to provide the correct position of the ring with respect to the sleeve, it is desirable to provide an interlocking part on the two parts. Such interlocking parts are preferably in the form of one or more interlocking ribs and grooves provided on each part.

It is desirable to provide twice as many support surfaces on the bulb as the bulb holding lugs. Thus, the standard quartz halogen H4 bulb is provided with three lugs, preferably six support surfaces, which are arranged in two sets of three support surfaces, one set on the left side of the road. The other set is arranged to hold the bulb in a position suitable for driving to the right side of the road.

In this way, it is possible to have a single reflector body molding that can be used regardless of road regulations. Under these conditions, two types of retaining means are provided, and furthermore, it is only necessary to select the above retaining means suitable for the road regulations of the country where the headlights are to be used, and fix them to the reflector body.

Embodiments of the present invention will be described in an embodiment manner with reference to the accompanying drawings.

Referring to the drawings, the headlight assembly illustrated herein generates a refracting or passing beam that meets the appropriate ECE regulations for asymmetric beam patterns.

The headlight assembly is a conventional front opening (not shown). Dish-shaped reflector body 10 (partially shown) having an inner reflective surface 12 and a rear bulb receiving hole 14. The headlight assembly also includes a housing including the body 10 installed with a light transmission front cover disposed across the front opening of the dish-shaped body 10, as is known.

The dish-shaped body 10 injection molded of a suitable temperature resistant synthetic resin compound includes an outer sleeve 16 which is integrally molded with the body 10 and surrounds the bulb receiving hole 14. The sleeve 16 is cascaded at its rear end (as shown in FIGS. 1 and 2) and has a continuous annular rim 18 and an annulus facing rearward and disposed inward of the rim 18. Form the surface 20. The surface 20 is disposed in a plane perpendicular to the optical axis (X: see also FIG. 1) of the dish-shaped reflector body 10.

On top of the surface 20 a series of parts are molded, such parts comprising a first set of three support surfaces 22 and a second set of three support surfaces 23. The first set of support surfaces 22 is a lug arrangement lug 24 on the annular mounting flange of a conventional quartz halogen H4 bulb circumferentially about the sleeve 16 axis (coinciding with the optical axis). Only are shown spaced apart by a distance corresponding to the distance between them. The size of each support surface 22 in the circumferential direction is estimated to accommodate a suitable lug 24, and in a typical H4 bulb, one of the three lugs is wider than the other two, the lugs They are spaced at unequal angles with respect to the circumference of the mounting flange. This asymmetrical placement of the lug surface only ensures that the bulb can be fully mounted to the bulb holder in the same orientation so that the filament and the filament shield (formed integrally with the bulb) are precisely positioned with respect to the light surface of the reflector. . The second set of support surfaces 23 are mutually disposed in a manner similar to that described above for the support surface 22, but the set of support surfaces 23 is circumferentially around the surface 20 with respect to the set of support surfaces 22. It is arranged at an angle of 15 °. The purpose of this arrangement is to allow the same reflector body 10 to be used regardless of important road regulations. Thus, according to road regulations, the lugs 24 of a standard H4 bulb engage the first set of support surfaces 22 or the second set of support surfaces. In the embodiment illustrated in FIGS. 1-4, the headlights are used with lugs 24 engaged with the first set of support surfaces.

Each support surface 22 and its adjacent support surface 23 are spaced at the rear end by a rearward extending protrusion 26 having grooves 28 (see also FIG. 4).

The protrusion 26 does not extend backwards to the rim 18. On opposite surfaces of the support surfaces 22 and 23 with respect to the projections 24, the surface 20 is formed with respective inclined surfaces 30, 32 facing in the opposite direction along the circumference of the surface 20 thereof. It became. Such a lamp is shown only in FIGS. 3 and 4.

The lamp assembly also includes a retainer in the form of a press 34 molded from a suitable elastic sheet metal. The compact 34 includes a ring 36 provided with an outer annular collar 38 integrally molded to a size surrounding the sleeve 16.

The collar 38 is provided with a plurality of valves 40 (see also FIG. 2) which extend inwardly with respect to the collar 38 and are oriented towards the ring 36. The size of the collar 38 and the valve 40 relative to the outer side of the sleeve may be such that the collar 38 holds the sleeve 34 firmly once the valve 40 is engaged in the sleeve 16 material and secured. 18) to be forced on. When fully secured, the ring 36 is held in spaced relation to the surface 20 by adhering to the rear face of the rim 18. The ring 36 has a series of three spring arms 42 integrally molded from the ring 36 material by cutting and bending operations. Each spring arm 42 protrudes forward of the ring 36 towards each support surface 22. Each ring 36 is shaped with three radially extending leads 44 (see also FIG. 4) that engage each groove 28 in the projection 26. The engagement of the grooves 28 and the ribs 44 ensures that once the compact 34 is secured, it is secured in a desired position for rotation with respect to the sleeve 16. Each spring arm 42 has a convexly curved free end 46 that engages each lug 24 to resiliently push the lug against the support surface 22 associated with the arm. The ring 36 is also provided with a series of three slots 48 (see also FIG. 3) which are open inwardly. The slots 48 are sized to allow passage of the lugs 24 during mounting of the bulb into the headlight lamp assembly and are spaced apart from each other along the circumference of the ring 36. However, each slot 48 is shaken circumferentially with respect to each support surface 22 to be disposed on the opposing surface of the surface 30.

Thus, during installation of the bulb into the lamp assembly, the bulb is first angularly oriented and moved to pass the lug through each slot 48 until lug 24 engages the surface 20. Will recognize that. The bulb is then rotated about the axis in the clockwise direction as shown in FIG. 3 so that lugs 24 pass along surface 20 and protrude above sloped surface 30. Another rotation of the bulb causes each spring arm 42 to be contacted by the lugs 24 and biased upwards until the lugs 24 are placed facing each other on the support surface 22. The spring arm 42 bends and forces the lugs 24 back against each support surface 22 as illustrated in FIG.

If you want to correct the incompletely arranged bulb, apply the axial backward force to the bulb which deflects the spring arm 42 and then reverse the installation direction to bring the lug 24 independent of the inclined surface 30. Just rotate the bulb.

This bulb can be steered so that the lugs are aligned with each slot 48, while the bulb can be removed.

If the headlight assembly is used in a country where other road traffic laws apply, the lug 24 is supported after forcing the inclined surface 32 during the axial rotation of the bulb counterclockwise as shown in FIG. A slightly different compression material is used from the compression material 34 described above except for the spring arms 42 and the slots 48, which are repositioned so as to engage with (23).

Claims (8)

Rear bulb surrounded by an outer sleeve 16 having support surfaces 22 and 23 spaced along the circumference to engage respective bulb placement legs 24 on the front opening, inner reflective surface 12 and bulb mounting flanges. A dish-shaped body (10) having a receiving hole (14), and holding means (34) for holding the lug (24) in engagement with respective supporting surfaces (22, 23) of the sleeve during use; (a) the holding means 34 comprises a ring 36 fixedly mounted to the sleeve 16 and having slots 48 circumferentially spaced at its inner side, and (b) each slot 48 ) Is circumferentially offset relative to each support surface 22, 23 and each bulb when the mounting flange passes through the ring 36 with lugs 24 aligned to the slot 48. Sized to allow passage of the placement lugs 24, (c) the retaining means 34 are anchored to the ring 36 and are directed toward the respective support surfaces 22, 23. And an elastic member 42 which is earthed, wherein the elastic member 42 in the assembly forcing the lugs 24 against the respective support surfaces 22 and 23 when in use. 23 is inclined surfaces 30, 32 and stops 26 disposed between the support surfaces 22, 23 and the respective slots 48 in the ring 36 to the respective elastic members 42; And a circumferential movement of the associated lugs (24) when forced into engagement with the support surfaces (22, 23). The lamp assembly of claim 1, wherein the elastic member (42) is integrally molded with the ring (36). A ring (36) is provided with a collar (38) surrounding the sleeve (16), wherein the collar has a sleeve to prevent the ring (36) from releasing from the sleeve (16). (16) A lamp assembly, characterized in that a plurality of barbs 40 or sprags are provided that engage the outer surface. 3. Lamp assembly according to claim 1 or 2, characterized in that the ring (36) and the elastic member (42) are molded from a suitable elastic sheet metal. 3. An elastic member (42) according to any one of the preceding claims, wherein each resilient member (42) has one end anchored to the ring (36) and extends from each slot (48) toward the associated support surfaces (22, 23). And a spring arm disposed on the surface. 3. The interlocking component (28, 44) is provided on the two components (36, 16) in order to accurately position the ring (36) with respect to the sleeve (16). Lamp assembly. 7. Lamp assembly according to claim 6, characterized in that the interlocking parts take the form of one or more interlocking ribs (28) and grooves (44) provided respectively on the ring (36) and the sleeve (16). 3. The light bulb according to claim 1 or 2, wherein the bulb is provided with support surfaces 22, 23 which is twice the number of bulb holding lugs 24, the contact surfaces being arranged with two sets of support surfaces 22, 23. , One support surface set 22 is oriented to hold the bulb in a position suitable for driving to the left of the road, and the other support surface set 23 is arranged to hold the bulb in a position suitable for driving to the right of the road. Characterized in that the lamp assembly.