KR950009655Y1 - Electrical lamp capped without cement - Google Patents

Abstract

No content.

Description

Cement free lamp and base coupling

1 is a side view of a halogen incandescent lamp for an automobile headlight (with a cross-sectional view of the base of the lamp).

FIG. 2 is the lamp of FIG. 1 rotated 90 degrees (with a cross-sectional view of the base of the lamp).

3a or top view of the base sleeve of the first degree lamp before assembly.

3b is a cross-sectional view of the base sleeve of the first degree lamp before assembly.

4a or 1st plan view of the lamp insulator.

4b or 1st side view of a lamp insulator.

The invention relates to a combination of a lamp and a base, in particular a single-stage glass ball with at least one filament, a lead wire extending outwardly of the pinch chamber, a two-piece with a metal base sleeve and a second base element made of insulating material. It relates to a base and a lamp and a base joining device which are free of cement, consisting of a terminal component protected on the base and electrically connected to the lead wire.

This type of lamp is suitable for use in reflective tablets, especially for automotive headlights.

For example, existing lamps of this type use a two-piece base in which the insulator is made of plastic (see Utility Model Study No. 82 01 536). The metal base sleeve is housed in the insulator's reception. .

However, such an insulator is extremely difficult to fabricate due to its complicated shape.

An automobile lamp with a two-part base insulator made of ceramic is disclosed in Utility Model Publication No. 81 04771 of the Federal Republic of Germany. The two base parts are fixed by rivet arrangements. However, this rearrangement has a lot of movement and requires additional mounting parts. Since the optical performance of the headlights is essentially based on the degree of fixation of the base insulator in the base sleeve, there should be no movement between the base insulator and the base sleeve in order to avoid misalignment of the lamp with respect to the headlight's focus.

It is an object of the present invention to provide a lamp with a two part base characterized by a simple connection of two base parts with no movement.

This object is achieved by the features disclosed in claims 1 to 9.

More preferred embodiments of the present invention appear in the dependent claims.

A special advantage of the present invention is that the connection between the two base parts can be made quickly and easily. Another advantage lies in the high precision adjustments currently required for headlights. In addition, the connection according to the present invention compensates for the large tolerances for the base part in assembly. These properties are particularly important when the insulator is made of ceramic, because the ceramic part has a tolerance (about 0.4 mm) that is significantly larger than the plastic material (its typical tolerance is around 0.05 mm). In addition, ceramic components are sensitive to impact, so ceramic components should be used gently. This new and simple connection technology makes use of the advantages of ceramic base components for lamps that require maximum precision adjustment. When ceramics are used the drying process is improved and the temperature is lowered due to improved thermal insulation. When plastic parts are used, the stack that can form on the reflector must be removed through a complex subsequent heating or cleaning step.

The simple form of connection according to the present invention provides sufficient spacing in the base so that the round terminal can be used instead of the flat plate terminal (contact league). This insulates the base from the outside, making the base waterproof, allowing the manufacture of embodiments with potting.

Embodiments of the present invention are described in more detail below.

Figures 1 and 2 show a lamp called a type H7, a halogen incandescent lamp rated at 50 W, which, in certain applications, replaces type H1 lamps. These lamps are used for individual high beam lighting purposes in automotive headlights. The lamps are columnar single power outlets (1) made of hardened glass with a spindle vertical filament (2) filled with an inert gas and a halogen additive and supported by two inlet lines sealed in a pinch seal (3). Has

The pinch chamber 3 is surrounded by the metal holder element 4. The metal holder consists of two shell heaves 5, as is well known, each of which has a strap 6 which is formed integrally at the opposing position and ends at the apron 7 opposite the bulb. . The conical projection 8 of the apron 7 is adjacent to the inside of the metal base sleeve 9 made of a hollow cylinder and is connected to the base sleeve by laser welding L. The advantage of laser welding is that there is no tension at the welding point during the welding period and the adjustment accuracy is not compromised afterwards.

In addition, the base sleeve has an adjustment ring 10 integrally formed at the end of the base sleeve towards the bulb with several notches and protrusions 11 by means of correct positioning (FIG. 3). Far from the bulb, the base sleeve has a bent collar 12 inward. The adjusting ring 10 and the nearly cylindrical collar 12 lie in a plane crossing the ramp axis. According to the makeup from the collar 12, the base sleeve 9 has two opposing flaps 13 integrally formed thereon. The flaps are bent at an angle of 90 ° from the collar into the base sleeve (180 ° for the common cylinder) and end below the adjusting ring plane. Each flap end 14 is branched in the shape of a feather, the branch having a central portion 15 and two outer rakes 16. Rake 16 is punched from flap end 14 and stretches about half the flap length.

The ceramic insulator 17 (steatite material) having a solid cylinder shape is correctly fitted to the base sleeve 9 (reducing material 4 degrees). The insulator has two lateral elongated recesses 18 to provide space for the ends of the apron 8. The circumferential groove 19 at the circumference of the insulator stage away from the bulb secures the insulation of the insulator, without oscillation, in the collar 12 of the base sleeve.

The insulator 17 further comprises two continuous slits 20. Two flaps 13 fit into this slit 20. On the other side of the bulb the longitudinal slits end in two semi-circles 21 at the ends of the flap 13. The insulator 17 and the base sleeve 9 are fixed to each other by a cross arrangement obtained by twisting the end 14 of the flap. This twisting shortens the effective length of the flap in the step. Large tolerances in the thickness of the ceramic insulator are compensated for the period during the twisting process, because the twist always starts at the bottom 22 of the semicircular recess. This is critically important in tolerance compensation. The branch made by the flap end 14 further prevents fluctuations and more effectively compensates for the tolerance. Because of the shortening of the outer rake by the twisting step, it is supported in the same way as the bird's feather against the lower part 22 of the recess. Compensation for different tolerances is obtained by the angle of different elongations of the outer rake.

The insulator has two axial holes 23. Both metal tubes are riveted by circular terminals 24 with an enlarged top. At some distance from the top, a circular terminal is provided for the cylindrical bead 25 which acts as a stop at the recess 26 at the end of the insulator away from the bulb. The use of circular terminals made available due to space-saving crossover is much more desirable than the use of flat terminals. This is because better contact with the plug is provided on the socket side. In addition, the protection of the inflow line 27 becomes easy. The inflow line 27 extending from the pinch chamber 3 is angled toward the circular terminal 24 and the circular terminal at the end away from the bulb in which the inner cavity 28 of the circular terminal is inclined near the inflow line diameter. Is welded to.

The present invention is not limited to the illustrated embodiment.

In another embodiment, the insulator is made of plastic. In this case, the following is particularly recommended. That is, the thermal load of the base is limited by providing two shading members in the holder part, such as the age wing. Semicircular recesses in the insulator can be omitted if the thickness of the insulator is reduced.

Another embodiment is particularly protected against splashing of water and the like; Here, the base side away from the bulb is further coated and sealed by lamination of the plastic spray.

The lamp is manufactured as follows. Initially, the circular terminal is inserted into the insulator and riveted in place by magnification at the top. The base sleeve and the insulator are then connected by cross placement.

At the same time, the holder part is attached to the bulb.

The assembled devices are loosely coupled with an inlet line inserted into the circular terminal. The adjustment of the lamp is carried out in three dimensions. The holder part is sequentially welded to the base sleeve; The use of a laser for this purpose is intended to avoid misadjustment.

Claims (10)

A single stage glass sphere 1 having at least one filament 2; A lead wire 3 extending outward of the pinch thread 3; A two part base having a second base element made of a metal base sleeve 9 and an insulating material (hereinafter referred to as an insulator 17); And a terminal cylinder fixed to the base and electrically connected to the lead wire, wherein the base sleeve 9 is a hollow cylinder having two opposing flaps 130 integrally formed at the end away from the bulb, the flaps being bent 180 ° inwards. The insulator 17 is inserted into the hollow cylinder as a solid cylinder with two consecutive zero slits 20 to which the flap 13 of the base sliver is fitted, the flap end 14 protruding from the slit 20, Cement free lamp and base coupling device characterized in that the flap end is twisted. The method of claim 1, wherein the two zero slits 20 extend into the two recesses 21 at the stage facing the bulb, and the flap ends 14 are twisted in the region of the recess 21. Lamp and base joining devices using no cement. The flap end (14) according to claim 1 or 2, wherein the flap end (14) is branched into wings to form a central portion (15) and two outer rakes (16), and on the end surface of the insulator (17) facing the rakes. Cement free lamp and base engaging device, characterized in that it has an external rake end (16) that is supported against. 2. The cementless lamp and base joining device as claimed in claim 1, characterized in that the insulator (17) is made of ceramic. 2. A cement according to claim 1, wherein the hollow cylinder has a collar 12 that is bent inward at a stage remote from the bulb and extends across the cylinder axis, and the insulator 17 lies on the collar 12. Lamp and base coupling. 6. A cement and lampless engagement device as claimed in claim 5, characterized in that the collar (12) of the hollow cylinder is mounted in a cylindrical groove (19) in the insulator (17). 10. A cementless lamp and base coupling device as claimed in claim 1, characterized in that the insulator (17) has two side opposite elongated recesses (18) for receiving the holder part stage (8). 2. A lamp and base coupling device according to claim 1, wherein the terminal component is formed as a circular pin (24) which is mounted into a hole (23) in the insulator (17). Single-stage glass sphere 1 with filament 2; An introduction line 27 extending from the pinch chamber 3; A two part base with ceramic insulator 17 and metal base sleeve 9; A holder part 4 connected to the base sleeve 9 and surrounding the pinch chamber of the bulb; And a terminal component electrically connected to the lead-in and fixed to the base, wherein the base sleeve 9 is a hollow cylinder having two opposing flaps 13 integrally fabricated from the bulb, at a distal end; 18 ° broken, the insulator 17 is a solid cylinder with two consecutive longitudinal slits 20 extending at the end facing the bulb and ending at the recess 21 and inserted into the hollow cylinder, the recess being twisted by two flaps ( 21) Halogen incandescent lamp, characterized in that it has two flap ends 14 protruding from the slit into the area. 10. The halogen incandescent lamp according to claim 9, characterized in that the flap ends are branched into wings to make two outer rakes (16) and a central portion (15) with ends of outer rakes supported against the bottom of the recess. .