CN103917769A - Roller tappet - Google Patents
Roller tappet Download PDFInfo
- Publication number
- CN103917769A CN103917769A CN201280049658.0A CN201280049658A CN103917769A CN 103917769 A CN103917769 A CN 103917769A CN 201280049658 A CN201280049658 A CN 201280049658A CN 103917769 A CN103917769 A CN 103917769A
- Authority
- CN
- China
- Prior art keywords
- roller
- housing
- face
- tappet
- roller tappet
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 abstract 1
- 206010000496 acne Diseases 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
- F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2305/00—Valve arrangements comprising rollers
- F01L2305/02—Mounting of rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to a roller tappet (1), for example for a high-pressure fuel pump of an internal combustion engine, comprising a housing (2), which has a roller (4) used to start a periodic stroke generator on the drive-side face (3) of the housing, which roller extends in a top side (5) of a bridge piece (7) extending through an inner cylinder (6) of the housing (2), wherein a bottom side of the bridge piece (7) has an attachment for a tappet following part. The roller (4) has a conical shaft stub (17) having a ring step (18), which lies against the bottom side of the ring collar (11).
Description
Technical field
A kind of roller tappet with housing is proposed, described housing has the roller for the stroke producer of property starting cycle in the end of its driving side, described roller stretches at least indirectly in the upside of bridging component of inner cover that stretches out housing, wherein the downside of bridging component has the supporting member for tappet follower in the end of the slave end of roller tappet, and wherein roller starts from housing in the retaining mechanism that plays fixation.
Background technique
This roller tappet that is used herein to high-pressure fuel pump is described in DE102009056306A1.The roller of described roller tappet on the plat part at housing, stretch on distolateral according to Fig. 1,2 variations and jut that stretch in inner side, pimple shape on remain in described housing.Fixing for installing and transport roller tappet is necessary in tappet of roller is also necessary but be in operation.
Shortcoming is: the guidance field of the outer cover of housing is by forming plat part and attenuation and can occur the disadvantageous excessive impact in the outer cover region of remaining cylindricality on tappet in the modeling process of plat part.Also determine: pimple is configured to for the blocked part of roller and is relatively expended.Therefore, must in described region, for example carry out punching press, run through or push.
Summary of the invention
The object of the invention is, realize the maintenance of the simplification of roller in roller tappet.
According to the present invention, described object realizes by following manner, in the end of driving side, at least in the circumferential portion section of the exterior edge face of roller, stretch into annular flange flange as retaining mechanism, by fixing the roller stretching out from the housing downside against described retaining mechanism, wherein especially preferred, housing on its outer cover, at least the end of driving side around annular section in without step be provided with an only external diameter.
Therefore there is not above-mentioned shortcoming in roller tappet.The retaining mechanism (annular flange flange) proposing can start from housing single type and exist as the distolateral region of inside crimping.But it is preferred that described retaining mechanism is configured to (standardized) retaining ring etc. individually, described retaining ring is placed in the circular groove of the inner cover of housing.
Retaining ring as retaining mechanism can very simply be installed.Can abandon the jut of above-mentioned pimple shape.At this, the outer cover Perfect Ring of housing is smooth wall around ground, and this has improved its guiding and grindability.Whenever, in outer cover, for example use window in order to rotate stop.
In an improvement project of the present invention, propose, stretch out head placed in the middle from each exterior edge face of roller, the diameter of described head is less than the external diameter of roller.Via the annular convex shoulder forming between the outer cover at roller and corresponding head, roller should directly abut on the downside of annular flange flange at this.By described measure, realize the especially good maintenance of roller in housing.At this, the starting width of stroke producer on roller with and guiding width in tappet only narrow slightly.
If desired, can abandon head and therefore roller outer cover on its exterior edge face place and directly under retaining mechanism, stretch via it.
Being configured in of the class taper of describing in detail in another dependent claims towards corresponding head, distolateral transition region of roller roller is incorporated into housing in time allow " soft " of roller to install and avoid scratch.
If roller should not be placed in bridging component, so also can consider and propose, described roller is via its head at least in the corresponding recess in the inner cover that is placed in housing in the direction of the end of slave end.
Roller can be as proposed in an improvement project of the present invention directly sliding bearing in the cylindricality moulding portion of the upside of bridging component.But, propose equally, guide roller in independent shell element, described shell element can be placed in bridging component in addition light exercise.
For example relate to the high-pressure service pump for thering is fuel lubricated diesel oil according to the use of roller tappet of the present invention.Also can consider, be applied in the high-pressure service pump for the independent oil lubrication of bavin Water Oil Or Gas.Can be used in roller tappet as cam follower equally in the valve device of internal-combustion engine or be used in the axial piston type motor with wobble wheel disc type transmission device.
Brief description of the drawings
From accompanying drawing, draw example of the present invention:
Fig. 1 illustrates the stereogram of roller tappet;
Fig. 2 illustrate the stereogram of roller tappet in the region of the exterior edge face of its roller and
Fig. 3 illustrates the stereogram of roller together with head.
Embodiment
The roller tappet 1 that is used herein to high-pressure fuel pump shown in Figure 1.Roller tappet 1 has housing 2, and described housing has the roller 4 of the stroke generator (cam or eccentric wheel) for property starting cycle at end face 3 places of its driving side.Described roller sliding bearing ground stretches in case member 10, and described case member is contained in the upside 5 of bridging component 7 of the inner cover 6 that stretches out housing 2.The downside not illustrating of bridging component 7 has the supporting member for tappet follower (pump piston) at end face 9 places of the slave end of roller tappet 1.
Start from the end face 3(of driving side of housing 2 for the retaining mechanism 11 of fixed idler whell 4 referring to Fig. 2).Thereby described retaining mechanism is configured to independent annular flange flange and exists as retaining ring, described retaining ring is disposed in the peripheral groove 16 of the inner cover 6 of housing 2 at the end face 3 of driving side.
As from can well identifying Fig. 1,2, annular flange flange 11 is stretched out the exterior edge face 12 that exceedes roller 4.Or rather, stretch out head placed in the middle 17 from each exterior edge face 12 of roller 4.Via the annular convex shoulder 18 forming between the outer cover 8 at roller 4 and corresponding head 17, roller 4 abuts on the downside 13 of annular flange flange 11 (referring to Fig. 2,3).The exterior edge face 12 of roller 4 is class taper at this transition region 19 from its outer cover 8 to annular convex shoulder 18.
Reference numerals list:
1) roller tappet
2) housing
3) end face of driving side
4) roller
5) upside
6) inner cover
7) bridging component
8) outer cover
9) end face of slave end
10) case member
11) retaining mechanism, annular flange flange
12) exterior edge face
13) downside
14) outer cover
15) annular section
16) peripheral groove
17) head
18) annular convex shoulder
19) transition region.
Claims (8)
1. one kind has the roller tappet (1) of housing (2), described housing locates to have the roller (4) for the stroke producer of property starting cycle at the end face (3) of its driving side, described roller stretches at least indirectly in the upside (5) of bridging component (7) of inner cover (6) that stretches out described housing (2), the downside of wherein said bridging component (7) locates to have the supporting member for tappet follower at the end face (9) of the slave end of described roller tappet (1), and wherein said roller (4) starts from described housing (2) in the retaining mechanism (11) that plays fixation, it is characterized in that, end face (3) at described driving side is located, at least in the circumferential portion section of the exterior edge face (12) of described roller (4), stretch into the annular flange flange as retaining mechanism (11), the described roller (4) that starts from described housing (2) is fixed against the downside (13) of described retaining mechanism.
2. roller tappet according to claim 1, it is characterized in that, described annular flange flange (11) exists as independent member, and described independent member is disposed in the peripheral groove (16) of the described inner cover (6) of described housing (2) at the end face (3) of described driving side.
3. roller tappet according to claim 1 and 2, is characterized in that, described annular flange flange (11) exists as retaining ring, fixed tray or conduct circle eyelet.
4. roller tappet according to claim 1 and 2, it is characterized in that, stretch out head placed in the middle (17) from each exterior edge face (12) of described roller (4), the diameter of described head is less than the external diameter of described roller (4), and described roller (4) directly abuts on the downside (13) of described annular flange flange (11) via the annular convex shoulder (18) forming between its outer cover (8) and corresponding head (17).
5. roller tappet according to claim 4, is characterized in that, upper in each exterior edge face (12) of described roller (4), is class taper from outer cover (8) to the transition region (19) of described annular convex shoulder (18) of described roller.
6. roller tappet according to claim 1, it is characterized in that, in the upside (5) of described bridging component (7), there is the moulding portion of cylindricality, described roller (4) directly sliding bearing in described moulding portion or case member (10) at least can be placed in a little rotationally described moulding portion, described roller (4) is subject to sliding bearing in described case member (10).
7. roller tappet according to claim 1, is characterized in that, described housing (2) is upper at its outer cover (14), at least locate at the end face (3) of described driving side around annular section (15) in without step be provided with an only external diameter.
8. roller tappet according to claim 1, is characterized in that, described roller tappet is made as for a) high-pressure fuel pump, b) valve device of internal-combustion engine or c) motor, for example axial piston type motor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011085242.5 | 2011-10-26 | ||
| DE102011085242A DE102011085242A1 (en) | 2011-10-26 | 2011-10-26 | roller plunger |
| PCT/EP2012/065128 WO2013060494A1 (en) | 2011-10-26 | 2012-08-02 | Roller tappet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103917769A true CN103917769A (en) | 2014-07-09 |
| CN103917769B CN103917769B (en) | 2017-05-17 |
Family
ID=46598563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280049658.0A Expired - Fee Related CN103917769B (en) | 2011-10-26 | 2012-08-02 | Roller tappet |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2771565B1 (en) |
| CN (1) | CN103917769B (en) |
| DE (1) | DE102011085242A1 (en) |
| WO (1) | WO2013060494A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462202A (en) * | 2017-04-03 | 2019-11-15 | 舍弗勒技术股份两合公司 | Multi-part ball tappet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014220813B4 (en) * | 2014-10-14 | 2019-12-24 | Continental Automotive Gmbh | Tappet arrangement for a roller tappet pump and such a roller tappet pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566652A (en) * | 1995-10-06 | 1996-10-22 | Eaton Corporation | Light weight cam follower |
| EP0770763A1 (en) * | 1995-10-27 | 1997-05-02 | EATON AUTOMOTIVE S.p.A. | Hydraulic roller tappet |
| US20100064844A1 (en) * | 2006-06-20 | 2010-03-18 | Mathias Pflugl | Roller Seating Device |
| DE102009056305A1 (en) * | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Roller plunger, particularly for high-pressure fuel pump or for valve train of quality-or quantity controlled internal combustion engine, has housing which is projected under roller by bridge piece |
| EP2333337A2 (en) * | 2009-11-30 | 2011-06-15 | Schaeffler Technologies AG & Co. KG | Roller tappet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009056306A1 (en) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | roller plunger |
-
2011
- 2011-10-26 DE DE102011085242A patent/DE102011085242A1/en not_active Withdrawn
-
2012
- 2012-08-02 CN CN201280049658.0A patent/CN103917769B/en not_active Expired - Fee Related
- 2012-08-02 WO PCT/EP2012/065128 patent/WO2013060494A1/en active Application Filing
- 2012-08-02 EP EP12741019.9A patent/EP2771565B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566652A (en) * | 1995-10-06 | 1996-10-22 | Eaton Corporation | Light weight cam follower |
| EP0770763A1 (en) * | 1995-10-27 | 1997-05-02 | EATON AUTOMOTIVE S.p.A. | Hydraulic roller tappet |
| US20100064844A1 (en) * | 2006-06-20 | 2010-03-18 | Mathias Pflugl | Roller Seating Device |
| DE102009056305A1 (en) * | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Roller plunger, particularly for high-pressure fuel pump or for valve train of quality-or quantity controlled internal combustion engine, has housing which is projected under roller by bridge piece |
| EP2333337A2 (en) * | 2009-11-30 | 2011-06-15 | Schaeffler Technologies AG & Co. KG | Roller tappet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462202A (en) * | 2017-04-03 | 2019-11-15 | 舍弗勒技术股份两合公司 | Multi-part ball tappet |
| CN110462202B (en) * | 2017-04-03 | 2021-07-30 | 舍弗勒技术股份两合公司 | Multi-part ball tappet |
| US11231000B2 (en) | 2017-04-03 | 2022-01-25 | Schaeffler Technologies AG & Co. KG | Multi-part roller tappet |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2771565A1 (en) | 2014-09-03 |
| WO2013060494A1 (en) | 2013-05-02 |
| EP2771565B1 (en) | 2016-10-12 |
| CN103917769B (en) | 2017-05-17 |
| DE102011085242A1 (en) | 2013-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES AG & CO.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES GmbH & Co.KG |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG TO: SCHAEFFLER TECHNOLOGY GMBH + CO. KG Free format text: CORRECT: ADDRESS; FROM: |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 |