JP5583275B2 - High pressure discharge lamp having a reference ring, and method for manufacturing the high pressure discharge lamp - Google Patents

Description

  The present invention relates to a high-pressure discharge lamp (hereinafter referred to as “D lamp”) having an adjusted reference ring according to the superordinate concept of claim 1.

  WO2008 / 110969A2 discloses a high-pressure discharge lamp according to the above-mentioned superordinate concept having a high-pressure discharge burner, and the high-pressure discharge burner has a bush-shaped socket formed so as to be in contact with the high-pressure discharge burner. And the socket is fitted in the holding portion. For this purpose, the holding part has one ring consisting of an inner and lower part and an outer and upper part, each of which is formed from a metal plate as a deep drawing member (press / punching). Are inserted axially into each other and clamped together by crimping.

  The inner and lower rings are formed with four axially projecting bases or projecting portions that are equally spaced in the circumferential direction. These caps or protrusions protrude axially through the through-openings inside the outer and upper rings, where the outer rings are clamped by bent clamp latches. Here, a circumferential gap is left between these protrusions, and the holding latch formed on the outer and upper rings passes through the gap inward in the radial direction and in the axial direction. It is led to the upper side. This retaining latch, which looks like a leaf spring, is in contact with the burner socket on the end side, where it is welded or soldered. In the present application, the term burner refers to a structure comprising a discharge vessel and an outer bulb surrounding the discharge vessel.

  The ring thickness of the standardized metal reference ring of the high-pressure discharge lamp according to the above definition has a small tolerance, and this ring thickness must be reproducibly met by the selected manufacturing technique. In the case of the reference ring structure and assembly method known from the prior art described above, it has proved difficult to accurately observe the thickness of the reference ring with a small tolerance. As a result, the defect rate increases, and as a result, the overall unit price increases.

  The object of the present invention is therefore to provide a metal reference ring for a high-pressure discharge lamp, in particular a high-pressure discharge lamp, which can better comply with the small tolerances required for the ring thickness.

  This problem is solved by the high-pressure discharge lamp according to the characterizing part of claim 1.

  Particularly advantageous embodiments are described in the dependent claims.

  Thus, basically, the high-pressure discharge lamp according to the first aspect of the invention comprises a reference ring consisting of a sleeve-shaped first ring part with a collar and a sleeve-shaped second ring part. The second ring portion is formed with a plurality of holding latches protruding inward in the radial direction and spaced apart in the circumferential direction. Importantly, the first ring part and the second ring part preferably have folding edges that are axially opposite each other, preferably radially outside, and of these folding edges. At least one bent edge has a predefined edge height. These bent edges are arranged so that they are fitted into each other while being in surface contact with each other on the peripheral surface, and are thereby welded at least in the form of dots on the outer periphery of the outer bent edge. . The at least one folded edge having a defined edge height is advantageously related to the minimum possible thickness of the reference ring.

  In this case, the height of the bent edge of the first ring, here the inner first ring, is such that the bent edge of the inner first ring is pivoted to the second outer ring of the reference ring. It is advantageous if it is chosen to have a defined internal height or thickness when abutting in the direction. In this way, the thickness of the reference ring depends only on the height of the correctly manufactured folding edge and can be reproduced regularly and very accurately.

  Furthermore, a plurality of flat portions that are substantially equally spaced apart in the circumferential direction are formed on the circumferential surface of the bending edge portion on the outer side in the radial direction, and these flat portions define spot welding locations. It is advantageous to do so. As a result, the material is applied only to the above-mentioned portions of the bent edge that have been thinned out in advance, so that when completed, a wall thickness that does not change substantially without any subsequent peak of thermal stress is achieved. The

  According to another aspect of the present invention, there is provided a method for assembling a high pressure discharge lamp comprising a burner and a depth for holding and contacting the burner in a defined position. A method comprising a reference ring formed by drawing and combined from two ring plate portions each having one radially outer bent edge, comprising substantially the following method steps: A method is provided.

  -Fitting the two ring plate portions into each other in the axial direction so as to be in surface contact between the bent edges on the peripheral surface;

  Adjusting the thickness of the reference ring between two assembly receiving devices that can be selectively spaced apart in the axial direction;

  Welding the two ring plate portions on the outer periphery of the bent edge located on the outside;

Thus, in the case of the solution proposed by the invention, the two-part reference ring is joined by a welding process, for example by laser welding, only after it has been adjusted to a predefined internal height. . In this way, the small tolerance to thickness required for the reference ring can be achieved with a reliable process. Furthermore, the second reference ring part can already contain a pre-adjusted burner. In other words, before the steps described above that fit into each other, there are advantageously the following further steps:
Pre-attaching the burner to one of the ring plate portions before the step of fitting into each other;

  In this way, the pre-adjusted burner can be connected to the second outer metal ring part and then the reference ring can be assembled and completed.

More advantageously, the following method steps are provided:
Prior to the step of fitting into each other, the other ring plate part is connected to the casing of the starting electronics, preferably by welding or crimping.

  In this case, in order to complete the lamp, an outer second ring part pre-attached with a burner and the first ring part already fixed to the casing for the starting electronics Can be combined into one.

Hereinafter, the present invention will be described in more detail based on examples.

FIG. 1 is a perspective view (isometric view) of a high pressure discharge lamp (hereinafter referred to as a D lamp) in an assembled state according to an advantageous embodiment of the present invention. FIG. 2 is a side view of the D lamp of FIG. FIG. 3 is a plan view of the D lamp of FIG. FIG. 4 is a first longitudinal sectional view of the D lamp of FIG. 5 is a second longitudinal sectional view of the D lamp of FIG. 1 perpendicular to the sectional view of FIG. FIG. 6 is a cross-sectional view of a metal reference ring according to an advantageous embodiment of the present invention. FIG. 7 is a longitudinal sectional view of the reference ring of FIG. FIG. 8 is a longitudinal sectional view of the reference ring of the present invention, including upper and lower assembly housing devices.

  According to FIG. 1, a D lamp according to an advantageous embodiment of the invention has a metallic reference ring 1. In the reference ring 1, a burner 2 is fixedly held at a predetermined relative position, and the reference ring 1 is fixed on a casing 3 of an electronic module (not shown in more detail).

  The casing 3 preferably includes an electronic device for starting a D lamp (not shown), in which a connection opening 4 is formed. As schematically shown in FIGS. 1 and 4, a plurality of contact pins 5 for electrically connecting the D lamp to a voltage source (not shown) protrude in the connection opening 4. ing.

  The burner 2 includes a discharge vessel 7 and an outer bulb 6. In the internal space of the discharge vessel 7, two opposing electrodes, xenon and a metal halide for forming a gas discharge are enclosed. The outer bulb 6 surrounds the discharge vessel 7 and is fixed to the discharge vessel 7. A bush-shaped metal socket 8 is fixedly fitted to the end of the cylindrical outer valve 6, and the socket 8 surrounds the outer valve 6 in a sleeve shape over a predetermined length. It is out.

  As can be seen from FIGS. 4 and 5, the casing 3 of the starting electronic device forms an accommodating space 9 that is opened outward, that is, one of the casings 3 is not closed. Electrical contacts 10 are disposed at the bottom of the accommodating space 9, and these electrical contacts 10 are connected to electrode current supply lines 11 and 12 protruding from the discharge vessel 7. The current supply line 11 protrudes from the ends of the discharge vessel 7 to the burner 2. According to FIGS. 4 and 5, the current supply line 11 protruding from the end of the discharge vessel 7 opposite to the casing 3 is an electrically insulating extension wire soldered or welded to the current supply line 11. 12, when the burner 2 is fitted into the accommodating space 9, the end of the current supply line 11 protruding into the accommodating space 9 and the extension wire 12 are guided to the casing 3. Each of the end portions of the two contacts with one contact 10 at the same time.

  In order to fix the burner 2 to the casing 3, the reference ring 1 is arranged around the metal sleeve 8, and the outer valve 6 is fixed in the reference ring 1. This reference ring 1 is shown in more detail in FIGS.

  Thus, the reference ring 1 according to the invention consists of two separate ring parts 13, 14, which are each punched out of a metal material, preferably from a metal plate member, by deep drawing. Molded at low temperature. Specifically, the second reference ring portion 13 has a substantially flat ring disc 15. The edge of the outer periphery of the ring disk 15 is bent, whereby the bent edge 16 extending in the axial direction has a predetermined length in the axial direction. A plurality of latches 17 projecting inward in the radial direction and spaced apart (equally) in the circumferential direction are punched out on the inner periphery of the ring disk 15, and these latches 17 form clamp legs. To be bent in the axial direction. A through hole 18 is formed at a radial distance from the inner periphery of the ring disk 15. Finally, the second reference ring portion 13 has a plurality of flat portions 19 formed in the radially outer region of the bending edge 16 (side surface of the radially outer bending edge), for example, by pressing or milling. Have. In this flat part, the radius of the upper reference ring part 13 is correspondingly small.

  The first reference ring portion 14 has a central cup-shaped region 20, the bottom of this region has an annular opening 21, for example the upper opening 21. The reference ring portion 13 has an outer diameter corresponding to the inner diameter of the ring disk 15. Furthermore, another one through-hole 22 is provided in the position which shifted | deviated with respect to the ring-shaped opening part in the bottom part (refer FIG. 6). The peripheral edge 23 in the axial direction of the cup-shaped region 20 is folded back in the direction of the collar 24 extending radially outward on the axial end (on the side opposite to the bottom in the axial direction), The collar 24 is deformed radially outwardly with respect to a bending edge 25 which extends in an axial direction and preferably has a defined length. The outer radius of the bent edge 25 of the first reference ring portion 14 is such that the first reference ring portion 14 is axially moved into the second reference ring portion 13 while the bent edges 16 and 25 are in surface contact. It is selected so that it can be inserted into or inserted into. In this case, the bent edge of the second reference ring part forms the radially outer surface of the assembled reference ring, in particular as illustrated in FIG.

  Accordingly, the holding or clamping leg 17 protrudes radially inward and downward in the direction toward the first reference ring portion 14, but is not in contact with the first reference ring 14. The first reference ring portion 14 is inserted into the second reference ring 13 in the axial direction so that the two bent edges 25 and 16 are in surface contact. The upper peripheral edge of the bent edge 25 of the reference ring portion 14 is inserted until it comes into contact with the inner surface of the ring disk 15 of the second reference ring portion 13. Thereby, the minimum thickness (internal height) of the reference ring 1 formed in this way is defined. This process of plugging into one is illustrated in FIG. The terms “upper side” and “lower side” relate to the particular orientation of the lamp portion illustrated in FIGS.

  Here, two reference ring portions 13 and 14 are inserted between two assembly accommodating devices 26 and 27 that can be spaced apart in the axial direction, and these assembly accommodating devices 26 and 27 are two ring portions. To push 13 and 14 into each other in the axial direction, they can move one above the other. The relative positions of the two reference ring portions 13 and 14 are selected such that the through hole 18 in the ring plate 15 and the through hole 22 in the bottom portion 20 overlap each other when viewed in the axial direction. Here, the two assembly accommodating devices 26 and 27 are used until the bent edge 25 of the lower reference ring portion 14 abuts against the inner surface of the ring disk 15 of the upper reference ring portion 13 or the assembly accommodating device. 26 and 27 are moved to overlap each other in the axial direction until they reach a predetermined distance from each other. In this respective defined position, the reference ring 1 has a predetermined dimension thickness with a predetermined small tolerance. In this state, the two ring portions are welded to each other in the region of the flat portion 19 described above, for example, by a laser welding technique.

  Subsequently, the burner 2 fitted into the welded reference ring 1 is contact-connected between the clamp leg 17 and the metal sleeve 8 surrounding the outer valve 6, and the outer valve 6 and the reference ring 1 are connected. Is in a predetermined adjusted relative position, the clamp leg 17 is fixedly joined to the metal sleeve 8 by, for example, welding (laser welding). In this case, the extension wire 12 described above protrudes through the two through-holes 18 and 22 that are put together.

  After the burner 2 formed in this manner is fitted into the accommodating space 9 in the casing 3 and the current supply lines 11 and 12 are connected to the contacts 10, the reference ring 1 is connected to its first ( It is mounted on the outer surface of the casing by an inner (inner) reference ring part 14, where it is fixed, for example by welding or crimping.

  Here, before connecting the two reference ring portions 13, 14 to each other, the outer valve 6 can be already mounted in the upper reference ring portion 13 in advance and fixed to the clamp leg 17. Please note that. In addition, the second reference ring portion 13 is fitted over the lower reference ring portion 14 together with the outer valve 6 or the burner 2 pre-mounted on the second reference ring portion 13, It is also possible for the first reference ring part 14 to already be fixed to the casing 3 of the starting electronics before welding with the reference ring part 14 on the side.

  Accordingly, a high pressure discharge lamp having a reference ring composed of a lower ring portion made of a deep drawing element and an upper ring portion made of a deep drawing element, the upper ring portion protrudes radially inward. A high pressure discharge lamp is disclosed in which a plurality of holding latches spaced apart in the circumferential direction are formed. According to the present invention, the upper ring portion and the lower ring portion are radially opposite each other in the axial direction (or opposed to each other in the axial direction), and each of the predetermined edges Having folding edges of heights, these folding edges being fitted into each other in surface contact with the circumferential surface, so that at least on the outer circumference of the outer folding edge, It is welded in the form of dots.

Claims (7)

A high-pressure discharge lamp having a reference ring (1) consisting of a sleeve-shaped first ring part (14) and a sleeve-shaped second ring part (13) ,
The front Stories second ring portion (13), projecting radially inward and circumferentially spaced by a plurality of retaining latches (17) are formed,
In high pressure discharge lamps,
Predefined axial edge heights in which the first ring portion (14) and the second ring portion (13) extend axially opposite each other on the outside in the radial direction. With bent edges ( 25 , 16)
The bent edge portions ( 25 , 16) are fitted into each other while being in surface contact with each other on the peripheral surface, whereby at least a point-like shape is formed on the outer periphery of the bent end portion (16) located on the outer side. are welded to,
The first ring portion (14) is inserted axially into the second ring portion (13);
A high-pressure discharge lamp characterized by that. The height of the bent edge of the inner first ring portion (14) is such that the bent edge ( 25 ) of the inner first ring portion is on the outer second ring portion (13). The reference ring (1) is selected to have a defined inner height when abutting in the axial direction;
The high-pressure discharge lamp according to claim 1 . A high-pressure discharge lamp having a reference ring (1) consisting of a sleeve-shaped first ring part (14) and a sleeve-shaped second ring part (13),
The second ring portion (13) is formed with a plurality of holding latches (17) protruding radially inward and spaced apart in the circumferential direction.
In high pressure discharge lamps,
Predefined axial edge heights in which the first ring portion (14) and the second ring portion (13) extend axially opposite each other on the outside in the radial direction. With bent edges (25, 16)
The bent edge portions (25, 16) are fitted into each other while being in surface contact with each other on the peripheral surface, thereby at least a point-like shape on the outer periphery of the bent end portion (16) located on the outer side. Is welded to
A plurality of flat portions (19) spaced substantially evenly in the circumferential direction are formed on the circumferential surface of the bent edge (16) on the outer side in the radial direction,
The flat portion (19) defines the spot welding location,
You characterized, high圧放electric lamp. A high-pressure discharge lamp having a reference ring (1) consisting of a sleeve-shaped first ring part (14) and a sleeve-shaped second ring part (13),
The second ring portion (13) is formed with a plurality of holding latches (17) protruding radially inward and spaced apart in the circumferential direction.
In high pressure discharge lamps,
Predefined axial edge heights in which the first ring portion (14) and the second ring portion (13) extend axially opposite each other on the outside in the radial direction. With bent edges (25, 16)
The bent edge portions (25, 16) are fitted into each other while being in surface contact with each other on the peripheral surface, thereby at least a point-like shape on the outer periphery of the bent end portion (16) located on the outer side. Is welded to
A casing (3) containing at least the electronic device for starting the lamp is provided,
The reference ring (1) is fixed on the casing (3) by welding or crimping over the first ring portion (14) inside the reference ring.
You characterized, high圧放electric lamp. 5. The high-pressure discharge lamp according to claim 1, wherein the first ring part (14) and the second ring part (13) are each manufactured from a deep drawing element. A method for assembling a high pressure discharge lamp,
The high-pressure discharge lamp comprises a burner (2) and a radially outer bent edge formed by deep drawing for holding and contacting the burner (2) at a specified position. A reference ring (1) combining two ring portions (13, 14) having ( 25 , 16),
A method ,
Fitting the two ring portions (13, 14) in each other in the axial direction so as to make surface contact between the bent edges ( 25 , 16) on the circumferential surface;
Adjusting the thickness of the reference ring between two assembly receiving devices (26, 27) that can be selectively spaced apart in the axial direction;
Welding the two ring parts (13, 14) on the outer periphery of the bent edge (16) located on the outside ,
Prior to the step of fitting into each other, the other ring part (14) of the two ring parts (13, 14) is welded or crimped to the casing (3) of the starting electronics. The method further comprising the step of connecting by : Pre-attaching the burner (2) to one ring part (13) of the two ring parts (13, 14) before the step of fitting into each other;
The method of claim 6 further comprising:

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