EP3172427A1 - Hochdruckanschlussvorrichtung - Google Patents
HochdruckanschlussvorrichtungInfo
- Publication number
- EP3172427A1 EP3172427A1 EP15735923.3A EP15735923A EP3172427A1 EP 3172427 A1 EP3172427 A1 EP 3172427A1 EP 15735923 A EP15735923 A EP 15735923A EP 3172427 A1 EP3172427 A1 EP 3172427A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flank
- pressure
- connection device
- receiving opening
- pressure pipe
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 15
- 230000001070 adhesive effect Effects 0.000 description 15
- 239000013598 vector Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 230000012447 hatching Effects 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 greases Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/30—Locking exclusively by special shape of the screw-thread
Definitions
- the invention relates to a high-pressure connection device with a housing in which a receiving opening is arranged, into which a channel extending in the housing opens, and with a pressure pipe socket, in which a
- High-pressure channel is formed, which opens at one end into an end face of the pressure pipe nozzle, and with a pressure on the pressure pipe socket
- Pressure pipe socket comes when screwing into the receiving opening with a formed on the end face sealing surface on a seat surface of the receiving opening to the plant.
- Such a high-pressure connection device is known from DE 101 25 439 AI.
- This high-pressure connection device is arranged on an injector body of a fuel injection system for an internal combustion engine and further has a pressure pipe socket which can be screwed to the injector body.
- a high-pressure line can in turn be screwed to the pressure pipe socket.
- the internal thread of the injector and the external thread of the pressure pipe socket is formed with a SAge leopardgewinde.
- an engaging in the screw thread formed by the internal thread and the external thread locking pin is provided, which ensures that the
- the invention has for its object to provide a high-pressure connection device, which has a relation to the prior art increased release torque in a simple structure.
- Screwing two mutually different flank angle ß, ⁇ has. It has been found that in a screw connection in which at least one flank has two or more mutually different flank angles ⁇ , ⁇ , the release torque is significantly increased compared to a screw connection whose flanks are designed, for example, as symmetrical 60 ° flanks. This makes it possible, for example, to dispense with the use of an adhesive which is added during the screwing of the pressure pipe socket into the receiving opening in the screw to increase the release torque. Indeed, in the practice of screwing using an adhesive, it has been found that the amount of adhesive actually present in the thread depends on a number of factors which are inaccessible to control. These are: the viscosity of the adhesive or the adhesive charge, which in turn is temperature-dependent and may also be influenced by external conditions during storage and transport of the adhesive charge, the wetting of the threads of the screw, the
- Manufacturing process or assembly process cause either too little adhesive or too much adhesive is applied to the thread. In particular, cases occur in which too little or too much adhesive is applied to all threads of the thread.
- Too little adhesive has the consequence that the screw is not reinforced in a planned manner, and the release torque of this screw is inadmissible low. Another possible consequence is a leaky one
- Gaps of the screwing takes place and a part of the adhesive emerges at the end of the screw connection. This inadmissibly escaping adhesive must be removed consuming or inside the channel or the
- Locking pin is only constructive and expensive to apply manufacturing technology.
- the fitting according to the invention can be dismantled non-destructively, i. the pressure pipe socket can with the application of an increased release torque - otherwise but without adverse consequences - from the receiving opening
- the flank has two partial flanks which enclose an angle ⁇ ⁇ 180 °. Such an angle ⁇ ⁇ 180 ° has proven to be particularly advantageous.
- the flank is arranged with two flank angles ß, ⁇ on the internal thread of the housing. This arrangement has the advantage that the flank with the two flank angles ß, ⁇ can be easily manufactured during the manufacture of the housing, which is manufactured according to individual specifications, while an existing series part can be used for the pressure pipe socket to be screwed.
- flank angle ß (the
- Outside edge in a range between 30 ° and 80 °, preferably between 40 ° and 70 °, more preferably between 45 ° and 65 °.
- the flank angle ⁇ (the outer edge) is in a range between 130 ° and 170 °, preferably between 135 ° and 165 °, more preferably between 145 ° and 155 °.
- this embodiment has proven to be easily manufacturable, but on the other hand, this embodiment ensures the desired increase in the release torque.
- a flank angle ⁇ of the inner flank opposite the outer flank lies in a range between 30 ° and 80 °, preferably between 40 ° and 70 °, particularly preferably between 45 ° and 65 °.
- Flank angle ⁇ formed partial flanks x to y between% and 4, preferably between 14 and 2, particularly preferably (1: 2) +/- 0.2.
- the housing is an injector body.
- High pressure connection device can be realized, is the preferred Application to an injector body of an injection system
- the injector body has the specified
- the pressure pipe socket has, opposite to the threaded flange bolted to the injector body, a second threaded flange onto which a screw connection of a high-pressure line is screwed.
- FIG. 1 shows a longitudinal section through a high-pressure connection device
- Figure 2 is a detail enlargement II of Figure 1 and
- FIG. 3 is a detail view of the invention formed
- Figure 1 shows an embodiment of an inventive
- a housing 1 designed as an injector body has a receiving opening 2 into which a high-pressure passage 3 extending in the housing 1 opens.
- the housing 1 is preferably an injector body as part of a fuel injection system for internal combustion engines, wherein the injector body is used to inject fuel into an associated combustion chamber of the internal combustion engine.
- the receiving opening 2 is cylindrical, wherein the base of the receiving opening 2 is formed as a seat surface 4.
- the high-pressure passage 3 in the housing 1 in this case opens centrally into the seat surface 4, so that it has an annular disk-shaped form.
- an internal thread 5 is formed, which has a facing the seat surface 4 inner edge 6 and a direction away from the seat surface 4 outer edge 7 (see Figure 2 and 3).
- the outer flank 7 has two partial flanks 8a, 8b (see FIG. 3), which are two to one another
- flank angles ß, ⁇ have different flank angles ß, ⁇ . This embodiment will be described in detail below.
- a pressure pipe socket 9 is screwed, which at its end facing the receiving opening 2 at least
- the external thread 10 is as conventional thread with
- Pressure pipe socket 9 has a continuous high-pressure channel 11, which is located in an end region of the pressure pipe socket 9
- High-pressure connection 12 with the housing 1 facing end face 13 of the pressure pipe connecting piece 9 connects.
- the high pressure port 12 is included
- FIG. 2 shows an enlarged detail II of the end region of the pressure pipe connecting piece 9 facing the housing 1
- Mouth of the high-pressure passage 11 surrounds the end face 13.
- a sealing surface 15 is formed, which comes with screwed pressure pipe socket 9 on the seat surface 4 of the receiving opening 2 to the plant.
- Figure 3 shows a detailed view of the fitting according to the invention with a distribution of the total axial forces on the individual turns in the case of five turns, the individual turns between 17% (left) and 24% (right) absorb the axial forces.
- This narrow distribution or the small difference between the minimum value and maximum value has the consequence that the fitting according to the invention can be designed to the load limits and can absorb more axial forces, as a screw connection of the same dimensions corresponding to the prior art.
- the force vectors are shown schematically.
- the short vector F RA D-60 ° describes the forces in the radial direction (acting upwards in the drawing), which is capable of accommodating a screw connection with two symmetrical 60 ° flanks (corresponding to the lower hatched thread in FIG. 3).
- the long vector F RA D-3O ° describes the forces in the radial direction (acting upwards in the drawing), which is able to receive the screw connection according to the invention with a second flank angle. Assuming equal axial forces F A xi-3o ° and F A xi-6o °, the following applies:
- FIG. 3 shows the external thread 10 of the pressure pipe connecting piece 9 having the symmetrical 60 ° flanks
- Inner edge 6 of the external thread 10 also has an edge with a particularly preferred angle ⁇ of 60 ° +/- 5 °.
- the opposite outer flank 7 of the internal thread 5 is subdivided into the two partial surfaces 8a, 8b whose dimension ratio is particularly preferably between (1: 2) +/- 0.2.
- the partial surfaces 8a, 8b include the angle ⁇ , which is particularly preferably 150 ° +/- 5 °, while the angle ß of the partial surface 8a has an angle ß of particularly preferably 60 ° +/- 5 °.
- the two partial edges 8a, 8b with the different angle impact can each - as shown - on the internal thread 5 or also on the
- the two partial edges 8a, 8b are arranged on the most heavily loaded flanks in the screwed state. Consequently, in an unillustrated embodiment according to FIG. 3, lower part, the upper thread (without hatching) can be designed as a pressure pipe thread (bolt thread) and the lower thread (with hatching) as an inner thread (nut thread). In a further embodiment according to FIG. 3 lower part, the upper thread (without hatching) can be formed as an internal thread (female thread) and the lower thread (with hatching) as a pressure pipe thread (bolt thread).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Joints With Pressure Members (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014214110.9A DE102014214110A1 (de) | 2014-07-21 | 2014-07-21 | Hochdruckanschlussvorrichtung |
PCT/EP2015/065351 WO2016012224A1 (de) | 2014-07-21 | 2015-07-06 | Hochdruckanschlussvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3172427A1 true EP3172427A1 (de) | 2017-05-31 |
Family
ID=53539699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15735923.3A Withdrawn EP3172427A1 (de) | 2014-07-21 | 2015-07-06 | Hochdruckanschlussvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3172427A1 (zh) |
CN (1) | CN106536915B (zh) |
DE (1) | DE102014214110A1 (zh) |
WO (1) | WO2016012224A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109072966B (zh) | 2016-04-29 | 2020-08-18 | 英法斯泰克知识产权私人有限公司 | 抗振牙型 |
DE102017220675A1 (de) | 2017-11-20 | 2019-05-23 | Robert Bosch Gmbh | Vorrichtung zum Anschließen einer Hochdruckleitung an einen Kraftstoffinjektor, Kraftstoffinjektor |
CN114112284A (zh) * | 2021-11-17 | 2022-03-01 | 河南中原特钢装备制造有限公司 | 一种风洞超高压管体连接用锯齿螺纹扣 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125439A1 (de) * | 2001-05-25 | 2002-11-28 | Bosch Gmbh Robert | Hochdruckanschlußvorrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4171012A (en) * | 1975-11-25 | 1979-10-16 | Holmes Horace D | Locking thread construction |
US4601491A (en) * | 1983-10-19 | 1986-07-22 | Vetco Offshore, Inc. | Pipe connector |
US4983084A (en) * | 1989-09-26 | 1991-01-08 | Northrop Corporation | Double locked threaded fastener |
US5931511A (en) * | 1997-05-02 | 1999-08-03 | Grant Prideco, Inc. | Threaded connection for enhanced fatigue resistance |
DE102012100976B4 (de) * | 2012-02-07 | 2014-04-24 | Franz Haimer Maschinenbau Kg | Einschraubwerkzeug und Werkzeugaufnahme für ein derartiges Einschraubwerkzeug |
-
2014
- 2014-07-21 DE DE102014214110.9A patent/DE102014214110A1/de not_active Withdrawn
-
2015
- 2015-07-06 EP EP15735923.3A patent/EP3172427A1/de not_active Withdrawn
- 2015-07-06 CN CN201580039640.6A patent/CN106536915B/zh not_active Expired - Fee Related
- 2015-07-06 WO PCT/EP2015/065351 patent/WO2016012224A1/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125439A1 (de) * | 2001-05-25 | 2002-11-28 | Bosch Gmbh Robert | Hochdruckanschlußvorrichtung |
Non-Patent Citations (1)
Title |
---|
See also references of WO2016012224A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN106536915A (zh) | 2017-03-22 |
WO2016012224A1 (de) | 2016-01-28 |
DE102014214110A1 (de) | 2016-01-21 |
CN106536915B (zh) | 2020-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2864686B1 (de) | Anschlussvorrichtung für medienleitungen | |
DE4137286C2 (de) | Ölfilter- oder Kraftstoffilter-Gehäuse | |
WO2018050881A1 (de) | Rückschlagventil, hochdruckführendes bauteil und kraftstoffhochdruckpumpe | |
DE20211333U1 (de) | Klemmverschraubung mit einer Schraubhülse, einer Gegenhülse und einem Klemmeinsatz | |
DE102008042141A1 (de) | Selbstzentrierende Schraube | |
WO2017050490A1 (de) | Verschlussschraube | |
WO2012098087A1 (de) | Kraftstoffeinspritzventil mit verbessertem hochdruckanschluss | |
EP3172427A1 (de) | Hochdruckanschlussvorrichtung | |
WO2015039832A1 (de) | Rohrverbindungsanordnung, hochdruckfluidleitungssystem einer doppelbrennstoffmaschine, doppelbrennstoffmaschine und verwendung einer zugmutter | |
DE102005052419B4 (de) | Schraubverbindung | |
EP1540234A1 (de) | Adapter-zwischenring für ein einschraubteil eines fluid-stecksystems | |
WO2005066487A1 (de) | Verfahren zum festziehen einer düsenspannmutter eines injektors für die kraftstoffeinspritzung sowie injektor und düsenspannmutter | |
WO2014026846A1 (de) | Gewindeverbindung zum verbinden von hochdruckmedium führenden komponenten | |
DE29521617U1 (de) | Rohr mit einem Anschlußabschnitt und Rohrverbindung | |
WO2008080646A1 (de) | Blockverbinder für fluidleitungen | |
EP0691499B1 (de) | Anschlussvorrichtung für Druckleitungen | |
DE102004036518B4 (de) | Verdrehsichere Dichtkegelverbindung bei Einspritzleitungen zur Kraftstoffeinspritzung und Verfahren zu deren Herstellung | |
DE102011100246A1 (de) | Sicherungsschraube für eine Schraubverbindung | |
DE102010061553A1 (de) | Befestigungselement für einen Schwingungstilger mit einer ringförmigen Tilgermasse | |
AT506991B1 (de) | Verbindungselement | |
DE102023103769A1 (de) | Steckfitting sowie Montageverfahren | |
DE681191C (de) | Rohrkupplung, insbesondere fuer Kaeltemittelleitungen | |
DE202023100738U1 (de) | Steckfitting | |
DE102004032203A1 (de) | Kraftstoffhochdruckspeicher | |
DE2830607A1 (de) | Ventilsitz |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20170221 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20181012 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20200908 |