CN103917769B - Roller tappet - Google Patents
Roller tappet Download PDFInfo
- Publication number
- CN103917769B CN103917769B CN201280049658.0A CN201280049658A CN103917769B CN 103917769 B CN103917769 B CN 103917769B CN 201280049658 A CN201280049658 A CN 201280049658A CN 103917769 B CN103917769 B CN 103917769B
- Authority
- CN
- China
- Prior art keywords
- roller
- housing
- face
- place
- driving side
- 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 - Fee Related
Links
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
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 lifter with housing is proposed, the housing has in the end of its driving side is used for starting cycle
The roller of the stroke generator of property, the roller in the upside for stretching out the bridging component of inner cover of housing at least indirectly stretching
Exhibition, the wherein downside of bridging component have the supporting member for tappet follower in the end of the slave end of roller lifter, and
And wherein roller starts from housing in the maintaining body for playing fixation.
Background technology
This roller lifter for being used herein to high-pressure fuel pump is described in the A1 of DE 10 2,009 056 306.The rolling
That the roller of wheel tappet stretches on the plat part of housing on side according to Fig. 1,2 variations and stretches in inner side,
During the housing is maintained on the jut of knob-like.Fixation of the roller in tappet for install and transport roller lifter be must
Want, but be also in operation necessary.
Have the disadvantage：The guidance field of the outer housing of housing is thinning and in the modeling process of plat part by constituting plat part
In can occur remaining cylindricality to tappet outer housing region unfavorable excessive impact.It is also determined that：By pimple structure
Become stopper section for roller with respect to expending.Therefore, it is necessary to for example carry out in this region punching press, through or squeeze
Pressure.
The content of the invention
The purpose of the present invention is the holding of the simplification for realizing roller in roller lifter.
According to the present invention, the purpose is realized by following manner, in the end of driving side, at least in the outer of roller
Annular flange flange is stretched in the circumferential section of end face as maintaining body, the roller stretched out from housing has been seated against into the holding
The downside of mechanism, wherein in particular it is preferred that housing is on its outer housing, at least in the circular ring part of the end of driving side
It is provided with only one external diameter Duan Zhongwu steps.
Therefore, there is no disadvantages mentioned above in roller lifter.The maintaining body (annular flange flange) of proposition can be started from single type
Housing and as inside crimping side region exist.However, the maintaining body is individually configured to (standardized) solid
It is preferred to determine ring etc., in the cannelure that the retainer ring is placed in the inner cover of housing.
Can simply install very much as the retainer ring of maintaining body.The jut of above-mentioned knob-like can be abandoned.
Here, the outer housing of housing is smooth wall entirely around ground, its guiding and grindability are which improved.Whenever, in outer housing
For example use window to rotate stop.
Propose in an improvement project of the present invention, from each outer face of roller head placed in the middle, the head are stretched out
External diameter of the diameter in portion less than roller.Via the annular convex shoulder formed between the outer housing of roller and corresponding head, roller exists
This should be directly abutted on the downside of annular flange flange.By the measure, roller especially good holding in the housing is realized.
Here, starting width and its guiding width in tappet of the stroke generator on roller only slightly narrows.
If necessary, can abandon head and therefore roller outer cover at its outer face directly under maintaining body via it
Stretch.
Roller is being incorporated into housing by the corresponding head of direction of roller, the construction of the class taper of the transitional region of side
Scratch is installed and avoided to " softness " that roller is allowed when middle.
If roller should not be placed in bridging component, then also it can be considered that and propose, the roller is via it
Head is at least in the corresponding recess being placed in the inner cover of housing towards on the direction of the end of slave end.
Roller can be directly slidably supported in bridging component as proposed in an improvement project in the present invention
Upside cylindricality shaping sector in.However, same propose, and the guide roller in single shell element, the shell element is additionally
Can be placed in bridging component light exercise.
The use example of roller lifter of the invention is such as relating to the high-pressure pump of the diesel oil for lubricating with fuel.Also can
It is enough to consider, apply in the high-pressure pump for the independent oil lubrication of bavin Water Oil Or Gas.Equally can using roller lifter as
Cam-follower and be used in the valve device of internal combustion engine or used in the axial piston with wobble wheel disc transmission device
In formula electromotor.
Description of the drawings
The example of the present invention is drawn from accompanying drawing：
Fig. 1 illustrates the axonometric chart of roller lifter；
Fig. 2 illustrate axonometric chart of the roller lifter in the region of the outer face of its roller and
Fig. 3 illustrates axonometric chart of the roller together with head.
Specific embodiment
Figure 1 illustrates the roller lifter 1 for being used herein to high-pressure fuel pump.Roller lifter 1 has housing 2, the housing
There is the roller 4 of the stroke generator (cam or eccentric) for property starting cycle at the end face 3 of its driving side.The rolling
Slipping supportedly stretches in case member 10, and the case member is contained in the upper of the bridging component 7 of the inner cover 6 for stretching out housing 2
In side 5.The downside being not shown of bridging component 7 has at the end face 9 of the slave end of roller lifter 1 is used for tappet follower
The supporting member of (pump piston).
For fixed idler whell 4 maintaining body 11 start from housing 2 driving side end face 3 (referring to Fig. 2).The holding machine
Structure is configured to single annular flange flange so as to exist as retainer ring, and the retainer ring is placed in housing 2 at the end face 3 of driving side
Inner cover 6 circumferential slot 16 in.
As can be well recognized from Fig. 1,2, annular flange flange 11 extends over the outer face 12 of roller 4.It is more true
Say with cutting, from each outer face 12 of roller 4 head 17 placed in the middle is stretched out.Via outer housing 8 and corresponding head 17 in roller 4
Between the annular convex shoulder 18 that formed, roller 4 abut on the downside 13 of annular flange flange 11 (referring to Fig. 2,3).The outer face of roller 4
12 heres are class tapers in the transitional region 19 from its outer housing 8 to annular convex shoulder 18.
Reference numerals list：
1) roller lifter
2) housing
3) end face of driving side
4) roller
5) upside
6) inner cover
7) bridging component
8) outer housing
9) end face of slave end
10) case member
11) maintaining body, annular flange flange
12) outer face
13) downside
14) outer housing
15) annular section
16) circumferential slot
17) head
18) annular convex shoulder
19) transitional region.
Claims (7)
1. one kind has the roller lifter (1) of housing (2), and the housing has for starting at end face (3) place of its driving side
The roller (4) of periodic stroke generator, the roller is at least indirectly the bridge in the inner cover (6) for stretching out the housing (2)
Stretch in the upside (5) of relay part (7), wherein slave end of the downside of the bridging component (7) in the roller lifter (1)
End face (9) place has the supporting member for tappet follower, and wherein described roller (4) in the maintaining body for playing fixation
In start from the housing (2), it is characterised in that at end face (3) place of the driving side, at least in the outer end of the roller (4)
The annular flange flange as maintaining body is stretched in the circumferential section in face (12), the roller (4) quilt of the housing (2) is started from
Seat against the downside (13) of the maintaining body；Head placed in the middle is stretched out from each outer face (12) of the roller (4)
(17), less than the external diameter of the roller (4), the roller (4) is via in its outer housing (8) and corresponding head for the diameter of the head
Between portion (17) formed annular convex shoulder (18) and directly abut on the downside (13) of the annular flange flange (11).
2. roller lifter according to claim 1, it is characterised in that the annular flange flange (11) is deposited as single component
The single component is placed in the circumferential slot of the inner cover (6) of the housing (2) at end face (3) place of the driving side
(16) in.
3. roller lifter according to claim 1 and 2, it is characterised in that the annular flange flange (11) is used as retainer ring, solid
Price fixing exists as round wires snap ring.
4. roller lifter according to claim 1, it is characterised in that on each outer face (12) of the roller (4),
Transitional region (19) from the outer housing (8) to the annular convex shoulder (18) of the roller is class taper.
5. roller lifter according to claim 1, it is characterised in that exist in the upside (5) of the bridging component (7)
The shaping sector of cylindricality, the roller (4) is directly slidably supported in the shaping sector or case member (10) at least can be somewhat
In being rotationally placed in the shaping sector, the roller (4) is subject to slidably supported in the case member (10).
6. roller lifter according to claim 1, it is characterised in that the housing (2) at least exists on its outer housing (14)
Only one external diameter is provided with without step in the circular annular section (15) at end face (3) place of the driving side.
7. roller lifter according to claim 1, it is characterised in that the roller lifter be set to for high-pressure fuel pump or
The valve device of internal combustion engine.
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 CN103917769A (en) | 2014-07-09 |
| CN103917769B true 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) |
Families Citing this family (2)
| 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 |
| DE102017107099B3 (en) | 2017-04-03 | 2018-06-28 | Schaeffler Technologies AG & Co. KG | Multi-part roller tappet for a high-pressure fuel pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566652A (en) * | 1995-10-06 | 1996-10-22 | Eaton Corporation | Light weight cam follower |
| IT1279050B1 (en) * | 1995-10-27 | 1997-12-04 | Eaton Automotive Spa | DIRECT ACTING HYDRAULIC PUNTERS FITTED WITH A ROLL FOR CONTACT WITH THE CAM OF THE CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE |
| DE102006028348B3 (en) * | 2006-06-20 | 2007-10-31 | Siemens Ag | Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element |
| DE102009056306A1 (en) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | roller plunger |
| 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 |
| DE102009056303A1 (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 EP EP12741019.9A patent/EP2771565B1/en not_active Not-in-force
- 2012-08-02 WO PCT/EP2012/065128 patent/WO2013060494A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP2771565B1 (en) | 2016-10-12 |
| CN103917769A (en) | 2014-07-09 |
| WO2013060494A1 (en) | 2013-05-02 |
| DE102011085242A1 (en) | 2013-05-02 |
| EP2771565A1 (en) | 2014-09-03 |
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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 |