The invention relates to a lamp ring in accordance with the precharacterizing clause of patent claim 1, a lamp provided with such a lamp ring in accordance with the precharacterizing clause of patent claim 8 and a base mounting machine with such a receptacle for producing such a lamp.
Generally, the lamp ring is soldered to the shell 6 using lead solder in a manual production process. The use of lead solder is forbidden from now on, however, so that the lamp ring 12 should be, for example, laser-welded to the shell 6. In general, laser-welding takes place on an automated base mounting machine.
Since the above-described indicator lamp has a similar design to H3 lamps for motor vehicle headlamps, in particular for lower beam, upper beam and foglights, base mounting machines for H3 lamps are suitable for fitting and adjusting the indicator lamp in automated fashion. However, as shown in
One disadvantage is the fact that, owing to the special accommodating elements of the base mounting machine, the latter needs to be converted for fitting of the indicator lamp, which lasts for approximately 1.5 shifts and results in considerable conversion costs.
The invention is based on the object of providing a lamp ring, a lamp provided with such a lamp ring and a base mounting machine for producing such a lamp, the lamp ring and the base mounting machine being designed such that the lamp according to the invention and known H3 lamps can be manufactured on one base mounting machine without the latter needing to be converted.
This object is achieved as regards the lamp ring by the combination of features in claim 1, as regards the lamp by the combination of features in claim 8 and as regards the base mounting machine by the combination of features in claim 9. Particularly advantageous embodiments of the invention are described in the dependent claims.
The lamp ring according to the invention for a lamp, in particular for a low-volt halogen indicator lamp, has a cutout for inserting a shell and fixing lugs for fixing the lamp ring to the shell. Furthermore, the lamp ring has a first recess on the circumferential side for coding the lamp. According to the invention, the lamp ring has a diametrical second recess for positioning the lamp ring in a base mounting machine, the second recess having at least one projection on its inner wall.
A lamp according to the invention has a lamp ring for engaging around a shell. The lamp ring is fixedly connected to the shell and has two diametrical recesses on the circumferential side, of which recesses one has at least one projection on its inner wall.
A base mounting machine according to the invention for producing a lamp with a lamp ring with two diametrical recesses on the circumferential side, of which one inner wall has at least one projection, has a first and a second accommodating element for engaging in the recesses, the second accommodating element having a profiled top region, which is matched to the inner wall of the recess with at least one projection.
This solution has the advantage that the lamp ring according to the invention can be welded to a shell on the same base mounting machine as a known H3 lamp without the base mounting machine needing to be converted. In addition, as a result of the at least one projection on the inner wall of the second recess, a particular geometry is achieved which prevents a lamp with the lamp ring according to the invention being inserted into a lampholder for an H3 lamp, so that the noninterchangeability of the individual lamp types is still guaranteed. At the same time, however, the insertion of the lamp according to the invention in a lampholder associated with it is not made more difficult.
In a preferred exemplary embodiment of the lamp ring, the projection is set back via a side face of the inner wall from an outer circumferential section of the lamp ring.
Preferably, a second projection is provided which is arranged opposite the first projection, the projections being spaced apart from one another via a bottom face.
The projections can have an identical design, visible faces of the projections lying in one plane and opposite opposing faces running parallel.
The side faces and the bottom face can lie on an imaginary arc with a constant radius, which corresponds to the radius of an arc recess for coding an H3 lamp ring.
The invention will be explained in more detail below with reference to a preferred exemplary embodiment. In the drawings:
The lamp ring 26 has a mirror-symmetrical geometry with a circular cross section with a substantially rectangular, centered cutout 28 for accommodating a shell (not illustrated), into which a glass bulb with a filament can be inserted. In each case four fixing lugs 30, 32, 34, 36 for welding, in particular laser-welding, the lamp ring 26 to the shell are arranged on longitudinal sides of the cutout 28 and lie opposite one another in pairs. In each case one plate-like temporary securing element 38, 40 is formed between the adjacent fixing lugs 30, 32 and 34, 36 and prevents mounting clips of the lampholder unintentionally being pressed between the adjacent fixing lugs 30, 32 and 34, 36 when the lamp is inserted into a lampholder.
As shown in
As shown in
As illustrated in
As shown in
An enlarged illustration of the top region of the second accommodating element 46 according to the invention is shown in
In order to fit the lamp, the lamp ring 26 is clamped in at right angles, i.e. with horizontally aligned top sections of the fixing lugs 30, 32, 34, 36, between the two accommodating elements 22, 46 of the base mounting machine which engage in an interlocking manner into the recesses 14, 44. The base mounting machine preferably has a large number of such accommodating elements 52, 54 on a rotating plate, so that a large number of lamp rings 26 can be fitted simultaneously. In a next fitting step, the shell is inserted into the cutout 28. In this case, the shell has already been prefitted, i.e. the glass bulb with the filament is connected to the shell and power supply lines of the indicator lamp 2 emerge at its free end. Then, a ground contact with the shell is produced via one power supply line. The filament is adjusted with respect to the surface 42 of the lamp ring 26 and then the shell is welded to the fixing lugs 30, 32, 34, 36 of the lamp ring 26 using a laser. Once the welding has taken place, the lamp ring 26 with the shell is removed from the base mounting machine and the second power supply line of the indicator lamp 2 is connected manually to an external electrical contact element, such as a cable, for example. The manual welding of the cable for the indicator lamp 2 is due to the base mounting machine, since the relatively long cables for the indicator lamp 2 are at present not provided.
As shown in
The fitting of the H3 lamp takes place substantially in the same way as in the case of the lamp according to the invention. The only difference consists in the fact that preferably the connection of the second power supply line of the filament to an external electrical contact element does not take place manually outside the base mounting machine but in automated fashion in the base mounting machine. During fitting, in order to position the H3 lamp ring 16, the first accommodating element 22 engages in the rectangular recess 18 and the second accommodating element 46 engages in the arc recess 20, the convex outer faces 70, 72 and the convex front face 76 bearing flat against the inner circumferential wall 84 as a result of the geometry according to the invention of the top region of the second accommodating element 46, so that both the lamps according to the invention and known H3 lamps can be manufactured on the base mounting machine without any need to convert it.
The lamp ring 26′ has a mirror-symmetrical geometry with a circular cross section with a substantially rectangular centered cutout 28′ for accommodating a shell (not illustrated), into which a glass bulb with a filament can be inserted. In each case four fixing lugs 30′, 32′, 34′, 36′ for welding, in particular laser-welding, the lamp ring 26′ to the shell are arranged on longitudinal sides of the cutout 28′ and lie opposite one another in pairs. In each case one plate-like temporary securing element 38′, 40′ is formed between the adjacent fixing lugs 30′, 32′ and 34′, 36′ and prevents mounting clips of the lampholder unintentionally being pressed between the adjacent fixing lugs 30′, 32′ and 34′, 36′ when the lamp is inserted into a lampholder.
The fixing lugs 30′, 32′ and 34′, 36′ of the lamp ring 26′ in accordance with the second exemplary embodiment of the invention have the same design and arrangement as the fixing lugs 30, 32 and 34, 36 of the lamp ring 26 in accordance with the first exemplary embodiment depicted in
As illustrated in
As illustrated in
The base mounting machine 460′ in accordance with the second exemplary embodiment is also suitable for processing known H3 lamp rings 16 depicted in
The invention diskloses a lamp ring for a lamp, in particular an indicator lamp, which has a recess for coding purposes and a further recess for positioning the lamp ring in a base mounting machine, the second recess having an inner wall with a projection, and a lamp with such a lamp ring and a base mounting machine for fitting such a lamp.
Number | Date | Country | Kind |
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10 2005 028 506.6 | Jun 2005 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/DE2006/001026 | 6/14/2006 | WO | 00 | 12/17/2007 |