KR960000559Y1 - Electric lamp - Google Patents

Abstract

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Description

Electric lamp

1 is a cross-sectional view showing an embodiment of a halogen incandescent lamp for automobile headlights

FIG. 2 is a sectional view of rotating the lamp of FIG.

3 is a side view (3a) and a cross-sectional view (3b) showing a contact lug of the lamp according to FIG. 1 before assembly

4 is a side view showing a second embodiment of a contact lug

* Explanation of symbols for main parts of the drawings

31 glass sphere 32 filament

33: pinch seal 34: holder

40: base sleeve 48: insulator

51: lead wire 55: welding hole

56: contact lug 57,65: slit

The present invention relates to a lamp comprising at least one glass sphere having light emitting means, a lead wire from a pinch seal, a base comprising an insulator of insulating material, and a terminal component fixed to the insulator and connected to the lead wire.

Such lamps may in particular be incandescent lamps and discharge lamps used in motor vehicles.

Such known lamps use, for example, an integrally formed base with an insulator made of plastic (see DE-GM 82 01 526 of the German Utility Model). The contact lug here is bent at 90 ° to the end of the insulator away from the glass sphere and the bent end forms a welding hole for the lead wire.

Utility model publication DE-GM 81 04 771 of the Federal Republic of Germany is known for a motor vehicle lamp with a two-part base insulator made of ceramic. Fixing the contact lugs to the insulators takes place in a narrow area, but allows a lot of play.

The object of the present invention is to devise a lamp in which the connection between the contact lug and the insulator supporting it is simple and secure.

The object is that according to the present invention, the insulator is a solid body having an end face close to the glass sphere and an end face away from the glass sphere, the end face of the insulator close to the glass sphere has an inclined portion, and the contact part is fixed in the slit of the insulator. Formed by a lug, the lug having a hole in contact with the end face of the insulator away from the glass ball, the glass ball side end of the lug being placed on the glass ball side end face and bent there to be crimped to the glass ball side end face in the region of the inclined portion .

An advantage of the present invention is that the contact is made quickly without damaging the material. In particular, contact lugs can be securely and securely fixed to insulators with a large tolerance in the volume that can occur in ceramic parts.

Rotation of the lug end, particularly the arch half close to the inclined and glass spheres of the insulator together compensates for the tolerance, and the height of the supporting point of the arch half of the contact lug relative to the inclined portion varies individually with the angle of rotation. Contact lugs having a backing portion by the welding hole are " compounded " by rotation toward the inclined portion.

The present invention can be applied to various lamp forms. The present invention is suitable, for example, for incandescent lamps, in particular halogen incandescent lamps, having one or a plurality of balllanents in which the lamp glass spheres are connected with the metal base sleeve by a holder. The base sleeve is in the form of a hollow cylinder, in which an insulator, which is a heavy cylinder made of ceramic, is fitted into the hollow cylinder (see DE-GM 89 02 247, Utility Model Republic of Germany).

On the other hand, the invention can also be applied to a discharge lamp as shown in FIG. 3 of EP-OS 231 936. The base has an approximately cup-shaped insulator made of plastic, and a contact lug is fixed to the thick bottom surface of the insulator.

The insulator supporting the contact lugs may be of other shapes, eg square, instead of disc bottom or solid cylinder. It is important that the end face away from the glass sphere can be used as a stopper and that the end face close to the glass sphere can be twisted. It is also possible to switch functional arrangements.

In the contact lugs according to the invention the weld hole is bent centrally from the body of the punched plate, while the narrow support extends to the end close to the glass sphere of the contact lug on both sides. The ends form narrow arches or legs, separated by slits in the center.

Thus, two arch halves are formed, with their free ends facing each other. The arch half can have a constant height. However, preferably, the arch half is inclined so that its height increases from the lower surface (to the welding hole) toward the free end. This results in a clear support for the insulator when the arch half is twisted, since only the lower edge of the free end is in contact with the inclined portion of the insulator. The lower surface of the arch half hits the support at an acute angle. However, by making the corners convex, the rotation of the arch half can be facilitated.

In general, the invention is suitable for lamps having a base formed in one or several parts, preferably a base formed in two parts. The base may be connected with the lamp glass sphere directly or through a holder. The lamp glass sphere may be sealed on one side or on two sides. The insulator supporting the contact lugs can be made of plastic, ceramic or mica, for example.

The connection between the contact lugs and the insulator according to the invention is particularly important when the insulator is made of ceramic, because the ceramic parts are much higher tolerances (about 0.4 mm) than parts made of plastic (standard tolerance about 0.05 mm). Has In addition, ceramic components are sensitive to shock, so material protection is important in this case. The advantage of ceramic insulators can also be used for lamps that require the highest control accuracy by means of a simple connection technique according to the invention. In particular, the use of ceramics improves evaporation and lowers the temperature due to better thermal insulation.

The manufacture of the lamp is carried out as follows. First, the glass sleeves with the base sleeve and the filament or the electrodes are adjusted and fixed to each other with a holder, and then the insulator with the contact parts is inserted from the bottom into the base sleeve and the flaps are folded in the base sleeve. This method has the advantage that it is possible to separate the lamp which is confirmed inadjustable during quality control before assembling the insulator. Therefore, the above misadjustment lamp can be reassembled. By this method, excessive consumption can be reduced.

Referring to the second embodiment of the present invention with reference to the accompanying drawings as follows.

Figures 1 and 2 show a 50 W halogen incandescent lamp, which is called type H7 and is replaced by type H1 in certain applications.

These lamps are commonly used for high beam and low beam lighting in automotive headlights. The cylindrical single stage hardened glass sphere 31 is filled with an inert gas and a halogen additive, and is equipped with an axial filament 32. Two lead wires 51 to the filaments 32 are sealed into the pinch seal 33.

The pinch seal 33 of the glass sphere is fixed elastically in the cup-shaped holder 34 made of a copper alloy integrally formed. The cup bottom face 35 facing the glass sphere has a double T-shaped slit in which a pinch seal 33 is fitted. Four projections 36 on the bottom surface of the cup 35 are used as strippers, and four projections 30 formed on the side of the pinch seal 33 are placed on the projections 36. The side wall of the cup holder 34 is divided into three parts. The first part is a circular ring 37 directly adjoining the cup bottom and relatively close surrounding the pinch seal 33. The second part connected to it is a cone 38 having a side extending into the third part 39, which is placed with a circular ring 39 parallel to an axis with a diameter larger than the first circular ring. .

The circular ring 39 has four tongues 41 uniformly distributed over the circumference at its ends far from the glass sphere, which tongues 41 are separated from each other by a space 42.

The base sleeve 40 is an axial hollow cylinder with a collar 43 which is bent outwards about half of the height of the hollow cylinder towards the glass sphere. Part of the circular ring 39 of the holder abuts the outside of the collar 43 and is welded in a known manner with the collar. An adjustment ring 44 is formed at the free end of the collar 43, which adjustment ring 44 is arranged transversely to the ramp axis at about 1/2 of the height of the hollow cylinder. The entire base sleeve 40 including the collar 43 and the adjusting ring 44 is made of a cylindrical part integrally formed by the reverse drawing method.

The base sleeve is formed so that the holder can be welded from the outside so that it can be easily accessed. This eliminates obstruction holes, such as when welding, inside the base sleeve. The welding technique can be chosen arbitrarily (eg laser welding, resistance welding). The welding process, which requires a constant pressing force of the individual parts, does not cause deformation of the lamp and hence misadjustment when the base sleeve and holder arrangement are extremely stable.

In the end 49, which is slightly bent into the hollow cylinder of the base sleeve 40, away from the glass sphere, a flap 45 is bent in a straight line into two mutually opposite interiors similar to the first embodiment. The flap is fitted in a groove 46 in the end face 47 away from the glass sphere of the ceramic insulator 48 (made of steaded).

The bottom surface 46a of the groove 46 is formed parallel to the end 47 in this embodiment. Since the end 49 of the base sleeve, away from the glass sphere, lies at the radially outer edge 50 of the insulator, the insulator can be supported in the base sleeve without play. The insulator is formed of a solid cylinder. Two lead wires 51 emerging from the pinch seal 33 are arranged in two conical openings 54 formed in axons in the insulator 48, and two contacts in the end face 47 away from the glass sphere. It is connected to the welding hole 55 of the lug 56. The flat punched body itself of the contact lug 56 (FIGS. 3A and 3B) is supported in a separate slit 57, which is in close contact with the conical opening 54.

The end face 47 of the insulator, which is remote from the glass sphere, has two cavities 58, into which the conical opening 54 and the slit 57 extend in common, and the punched body of the contact lug. The welding hole 55 of the contact lug bent by 90 ° with respect to the bottom surface of the cavity 58. On the inlet of each slit 57 on the end surface 59 facing the glass sphere of the insulator, the inclined portion 60 which rises toward the conical opening 54 is engraved on one surface. The weld hole 55 is cut from the punched body and a narrow support 64 is placed in the end of the punched body against both sides of the recess 69 of the hole.

The support 64 extends to the glass sphere side end 61 of the contact lug 56. The end of each contact lug 56 lying on the end face 59 forms a narrow arch over the weld hole and is separated by the slit 65 before being installed in the insulator, so that two arch halves 62 are formed. Since the lower surface of each arch half 62 facing the welding hole is inclined, the height of the arch half increases from the lower surface 63 toward the center of the contact lug (free end 66). (Fig. 3a) Two arches The half 62 is rotated up to 90 ° in the direction of the inclined portion 60 in the installed state (see the arrow in FIG. 1 or 3b) so that the lower edge 63a of the free end 66 contacts the inclined portion. do. The axis of rotation lies in the plane of the contact lug at the height of the support 64. By this method the contact lugs can be securely and securely fixed to the ceramic insulators having a large tolerance of the volume which can be caused in the ceramic parts. The rotation of the inclined portion and the arch half of the insulator together compensates for the tolerance, and the height of the support point of the half of the contact lug relative to the inclined portion varies individually with each rotation angle. Contact lugs having a backing portion by the welding hole are "clamped" by rotation toward the inclined portion.

This embodiment is characterized by a particularly low height of the lamp structure as a whole. The height of the lamp structure is 62mm. Such small lamps are opposed to tools (such as low wind resistance) in the automotive industry.

Less construction is achieved by the best overall design of the base (including holder). In this case, the ceramic insulator has a high thermal stress and can be placed closer to the glass sphere than the plastic material. Tolerances of the necessary tolerances for the use of ceramics are realized in particular in a place-saving manner, and at the same time it must be considered that high regulation accuracy is required.

4 shows another embodiment (contacted) of the contact lug. This embodiment basically corresponds to the first embodiment and the same parts are denoted by the same reference numerals. Attaching the lower surface 63 of the arch half 62 to the inner surface of the support 64 is via a rounded recess 67. The face toward the support of the recess 67 extends into the inclined portion 68 such that the width of the support 64 is reduced from about one third of its length toward the end 61 close to the glass sphere. The width of the support decreases from 2mm to 1.7mm.

Since the free end of the arch half 62 forming the slit 65 is inclined toward the welding hole, the slit 65 is enlarged. Since the punched body of the contact lug 65 has its both ends 61 pointed, the thickness (0.8 mm) of the punched plate is tapered in half.

Claims (8)

(Correction) the glass sphere having the light emitting means 32, Lead-in line 51 from the pinch seal 33. A base comprising an insulator of insulating material (hereinafter abbreviated as insulator 48). A contact part secured to the insulator 48 and connected in electrical connection with the lead wire 51, the contact part being formed of a lug 56, the lug 56 having an angled hole 55. In the configured electric lamp, The insulator 48 is a solid body having an end face 59 close to the glass sphere and an end face 47 away from the glass sphere, The full surface 59 of the insulator close to the glass sphere has an inclined portion 60, and the contact part is fixed to the insulator 48 in the through slit 57, and the hole 56 is connected to the end of the insulator away from the glass sphere. Abuts the face 49, An electric lamp, characterized in that the glass sphere side end 61 of the lug protrudes from the glass sphere side end face 59 and is bent therein and pressed against the glass sphere side end face 59 in the region of the inclined portion 60. (Correction) The method according to claim 1, wherein the hole 55 is formed by cutting from the body of the contact lug, and the glass sphere side end 61 of the lug penetrates to the recess 69 formed in the contact lug. Electric lamp. (Correction) The glass sphere side end portion 61 of the contact lug 56 is formed of one arch, which is separated by a slit 65 at the center and has two free ends. An electric lamp which forms an arch half and at least one of the free ends is curved. (Correction) The electric lamp according to any one of claims 1 to 3, wherein the rotating shaft lies in the plane of the contact lug and is disposed along the support. (Correction) The lower surface 63a of the free end 66 is a glass sphere because the lower face 63 of each arch half is inclined so that the height of the arch half increases toward the free end 66. An electric lamp characterized in that the crimped portion is pressed to the inclined portion (60) of the end surface close to. 2. An electric lamp according to claim 1, wherein the base consists of a base sleeve (40) forming an insulator and a hollow cylinder and the insulator (48) is fitted into the base sleeve (40) as a hollow cylinder. 7. Electric lamp according to claim 1 or 6, characterized in that the insulator (48) is made of ceramic. The lamp according to claim 1, wherein the glass sphere (31) and the base are connected by a holder (34).