EP0981714B1 - Glühstiftkerze - Google Patents
Glühstiftkerze Download PDFInfo
- Publication number
- EP0981714B1 EP0981714B1 EP98966769A EP98966769A EP0981714B1 EP 0981714 B1 EP0981714 B1 EP 0981714B1 EP 98966769 A EP98966769 A EP 98966769A EP 98966769 A EP98966769 A EP 98966769A EP 0981714 B1 EP0981714 B1 EP 0981714B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting bolt
- sheathed
- bead
- glow
- filament
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
Definitions
- the invention relates to a glow plug according to the Genus of the main claim.
- Glow plugs in two main variants Fixing or contacting the filament with the connecting bolt.
- the first variant is a "hot staking connection” where the filament is welded to the connecting bolt.
- the second A variant with which the invention is concerned is one "Plug-in connection”.
- For this type of connection at the lower end of the connecting bolt is a so-called push-mortise hole machined. Be in this hole the centering turns of the filament during assembly introduced and then by radial caulking in secured in their position, e.g. WO-A-9307423.
- the candle housing 11 of the glow plug 10 according to FIG. 1 has a continuous longitudinal bore 12.
- a glow plug 14 pressed in This consists of a glow tube 16, one Connection bolt 17, a filament 18 with filling powder 19 in Glow plug and a seal 22 between glow tube 16 and Connection bolt 17.
- the Terminal bolt 17 has a bore 22 at the lower end.
- the filament consists essentially of two cylindrical areas with different Winding diameters.
- the smaller cylindrical area of the Centering 18A of the filament 18 is axially in the Bore 23 of the connecting bolt 17 is inserted.
- the axial Positioning of the filament is over the stop of the Range of the cylindrical filament turns 18 B with the larger turn diameter on the front side 17 A of Connection bolt guaranteed. That way pre-positioned filament is removed during assembly simultaneous radial caulking on two or more opposite positions of the bore in the Connection bolts added.
- the resulting plastic Deformation of the bore caused by the ellipsoidal Training the same both a power and one positive connection in the area of caulking.
- Figures 3 to 5 show different views of a Example of the modification of the plug-stem connection according to the invention.
- the design of the filament 18 remains in the Comparison to the representation in Figures 1 and 2 unchanged.
- the Plug-in hole according to the current common invention Execution is carried out according to FIGS. 3 to 5.
- in the lower end of the connecting bolt 17 is an elongated Recess or bead 20 formed, the same axis to Longitudinal axis of the connecting bolt runs. It has a U-shaped shape Cross-section, i.e. it has an opening on one side 20A and thereby ensures radial pre-positioning when inserting the centering turns 18 A of the incandescent filament 18.
- the direction of installation of the filament can be optional selected axially or radially to the longitudinal axis of the bead 20 become.
- the axial positioning of the filament is determined by the Stop the area of the cylindrical filament turns with the larger winding diameter 18 B on the front side 17A of the connecting bolt 17 ensures, analogous to that Figures 2 and 4.
- the axially in this way Pre-positioned longitudinal axis of the connecting bolt Centering turns 18 A of the filament are replaced by two or several simultaneous radial caulking 17 B or 17 C - see Figure 5- joined together.
- the outer contour of the U-shaped bead 20 causes a plastic Deformation of the two legs 17 B, 17 C, so that both a positive as well as a positive connection between Connection bolt 17 and centering turns 18 A of the filament 18 arises in the caulking area.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Spark Plugs (AREA)
Description
Claims (6)
- Glühstiftkerze (10) zur Anordnung im Brennraum luftverdichtender Brennkraftmaschinen mit einem rohrförmigen, metallischen Kerzengehäuse (11), in dessen Längsbohrung (12) ein Glühstift (14) mit einem Teil seiner Länge abdichtend eingesetzt ist, sowie mit einem zur Stromzuführung dienenden, teilweise im Glühstift liegenden Anschlußbolzen (17), in dem eine der Glühstiftspitze zugewandte, axial verlaufende Ausnehmung ausgebildet ist, in der durch eine Steck-Stemm-Verbindung zwischen dem Anschlußbolzen (17) und Zentrierwindungen (18 A) der Glühwendel (18) eine Verbindung hergestellt wird, dadurch gekennzeichnet, daß die in dem der Glühstiftspitze zugewandten Ende des Anschlußbolzens (17) befindliche Ausnehmung länglich, in Achsrichtung des Anschlußbolzens verläuft und nach einer Seite offen bzw. als Sicke (20) ausgebildet ist, deren lichte Weite am Umfang des Anschlußbolzens etwa der des Durchmessers der Zentrierwindungen (18 A) der Glühwendel (18) entspricht.
- Glühstiftkerze nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmung bzw. Sicke (20) einen U-förmigen Querschnitt aufweist uns sowohl an der Stirnseite als auch am Umfang des Anschlußbolzens (17) eine Öffnung (20 A) enthält, die die Montage, Reinigung und Prüfung der Ausnehmung in radialer und/oder axialer Richtung ermöglicht.
- Glühstiftkerze nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die mit der Längsachse des Anschlußbolzens (17) achsgleiche Innenkontur der Ausnehmung bzw. Sicke (20) durch spanende Verfahren, wie z.B. Fräsen, Schleifen u.a. oder umformende Verfahren, wie z.B. Walzen, Kaltfließpressen u.a. hergestellt ist.
- Glühstiftkerze nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die mit der Längsachse des Anschlußbolzens (17) achsgleiche Innenkontur der U-förmigen Ausnehmung (20) die radiale Vorpositionierung der Zentrierwindungen (18 A) der Glühwendel (18) gewährleistet.
- Glühstiftkerze nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die vorpositionierte Glühwendel (18) bei der Montage durch gleichzeitiges radiales Verstemmen an mehreren einander gegenüberliegenden Positionen (17 B, 17 C) der Sicke (20) im Anschlußbolzen derart gefügt wird, daß die hierbei verursachte plastische Verformung der Sicke durch die ellipsoidale Ausbildung derselben sowohl eine kraft -als auch eine formschlüssige Verbindung- mit den Zentrierwindungen der Glühwendel bildet.
- Glühstiftkerze nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Öffnung (20 A) der Sicke (20) sich in radialer Richtung von innen nach außen auf ein Maß, welches kleiner als das des Zentrierwindungsdurchmessers des Glühwendels ist, verjüngt, und daß die Innenkontur der Sicke so ausgebildet ist, daß durch das radiale Einpressen der Zentrierwindungen des Glühwendels in die Öffnung (20) des Anschlußbolzens (17) durch das geometriebedingte Übermaß eine Schnappverbindung entsteht, die den Montagevorgang des Verstemmens erübrigt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19755822A DE19755822A1 (de) | 1997-12-16 | 1997-12-16 | Glühstiftkerze |
DE19755822 | 1997-12-16 | ||
PCT/DE1998/003627 WO1999031438A1 (de) | 1997-12-16 | 1998-12-10 | Glühstiftkerze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0981714A1 EP0981714A1 (de) | 2000-03-01 |
EP0981714B1 true EP0981714B1 (de) | 2001-11-21 |
Family
ID=7852059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98966769A Expired - Lifetime EP0981714B1 (de) | 1997-12-16 | 1998-12-10 | Glühstiftkerze |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0981714B1 (de) |
JP (1) | JP2001511880A (de) |
DE (2) | DE19755822A1 (de) |
ES (1) | ES2168810T3 (de) |
WO (1) | WO1999031438A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006052634A1 (de) | 2006-11-08 | 2008-05-15 | Robert Bosch Gmbh | Kraftstoffheizer |
DE102007001648A1 (de) | 2007-01-11 | 2008-07-17 | Robert Bosch Gmbh | Glühstiftkerze |
DE102007003217A1 (de) | 2007-01-22 | 2008-07-24 | Robert Bosch Gmbh | Glühstrahl für Glühzündung |
JP5352296B2 (ja) * | 2009-03-17 | 2013-11-27 | 日本特殊陶業株式会社 | シースヒータ及びグロープラグ並びにシースヒータの製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3035542A1 (de) * | 1980-09-20 | 1982-05-06 | Robert Bosch Gmbh, 7000 Stuttgart | Gluehstiftkerze fuer brennkraftmaschinen |
DE3911831A1 (de) * | 1989-04-11 | 1990-10-18 | Bosch Gmbh Robert | Starthilfevorrichtung fuer dieselmotoren, insbesondere gluehstiftkerze oder flammkerze |
DE9112242U1 (de) * | 1991-10-01 | 1991-11-28 | BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg | Temperaturmeßglühkerze |
DE4133338A1 (de) * | 1991-10-08 | 1993-04-15 | Beru Werk Ruprecht Gmbh Co A | Gluehkerze |
-
1997
- 1997-12-16 DE DE19755822A patent/DE19755822A1/de not_active Ceased
-
1998
- 1998-12-10 DE DE59802735T patent/DE59802735D1/de not_active Expired - Lifetime
- 1998-12-10 ES ES98966769T patent/ES2168810T3/es not_active Expired - Lifetime
- 1998-12-10 EP EP98966769A patent/EP0981714B1/de not_active Expired - Lifetime
- 1998-12-10 WO PCT/DE1998/003627 patent/WO1999031438A1/de active IP Right Grant
- 1998-12-10 JP JP53188699A patent/JP2001511880A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO1999031438A1 (de) | 1999-06-24 |
DE19755822A1 (de) | 1999-06-24 |
ES2168810T3 (es) | 2002-06-16 |
DE59802735D1 (de) | 2002-02-21 |
JP2001511880A (ja) | 2001-08-14 |
EP0981714A1 (de) | 2000-03-01 |
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