CN103423119B - Tappet - Google Patents

Tappet Download PDF

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Publication number
CN103423119B
CN103423119B CN201310199180.6A CN201310199180A CN103423119B CN 103423119 B CN103423119 B CN 103423119B CN 201310199180 A CN201310199180 A CN 201310199180A CN 103423119 B CN103423119 B CN 103423119B
Authority
CN
China
Prior art keywords
housing
tappet
blank
roller
leaving
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
Application number
CN201310199180.6A
Other languages
Chinese (zh)
Other versions
CN103423119A (en
Inventor
斯特凡·多恩
诺伯特·盖耶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fifth Schaeffler Investment Management & CoKg GmbH
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of CN103423119A publication Critical patent/CN103423119A/en
Application granted granted Critical
Publication of CN103423119B publication Critical patent/CN103423119B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F01L1/146—Push-rods
    • 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
    • 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
    • F04B1/0408—Pistons
    • 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
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • 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
    • 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
    • F01L2307/00—Preventing the rotation of tappets
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Propose a kind of tappet in particular for fuel-injection pump（1）, it has housing（2）, the housing is in first annular termination（3）In region at it at least in the section the basic inner circumferential side in cylinder shape（5）Inner containment has for allowing the roller of knock over cam（4）, wherein, in the axial direction in roller（4）Lower section, crosses bridge（6）Through housing（2）, this cross bridge in face of housing（2）The second annular termination（7）Bottom side（8）Serve as the setting portion for tappet follower, and wherein, four channel-shaped are left a blank portion（9）Along housing（2）Inner circumferential side（5）Extend thereon, roller（4）With its annular seamed edge（10）Four channel-shaped are stretched into leave a blank in portion.

Description

Tappet
Technical field
The present invention relates to a kind of tappet, in particular for pump or the tappet of compressor, it has housing, and the housing is first At it, the basic inner circumferential side inner containment in cylinder shape has for allowing periodicity to go at least in the section in annular end regions Journey generator clash into roller, wherein, in the axial direction below roller, cross bridge pass through housing, this cross bridge in face of housing The second annular termination bottom side at least indirectly the setting portion served as tappet follower.
Background technology
This tappet draws via the A1 of DE 10 2,010 022 318.It applies the high load capacity fuel in internal combustion engine to spray Penetrate in pump.For example improved by rotating speed and injection pressure improves the caused higher and higher bearing capacity requirement to tappet and needs More firm design, but this design but mutually conflicts with structure space limitation.It will thus be appreciated that, smaller roller Therefore only it is built with limited load ability.
The content of the invention
Task of the invention is to provide a kind of tappet, and it can more strongly be loaded in the case of compact dimensioning.
According to the present invention, the task is solved by the following method, i.e. provide a kind of tappet, and the tappet has housing, At it, the basic inner circumferential side inner containment in cylinder shape has the housing at least in the section in first annular end regions For the roller for allowing periodicity stroke generator to clash into, wherein, in the axial direction below the roller, cross bridge and pass through the shell Body, the bottom side of the second annular termination in face of the housing for crossing bridge is at least indirectly serving as tappet follower Setting portion, wherein, four channel-shaped portion of leaving a blank extends thereon along housing inner circumferential side, and roller stretches into the portion of leaving a blank with its annular seamed edge In.
Thus the tappet that can higher load is occurred in that, it is compactly built and its weight is only at most slightly larger than public affairs before The tappet opened.If necessary, the portion of leaving a blank of the also referred to as groove of Longitudinal extending provides weight and neutralizes
Therefore in the case where not increasing diameter of the housing or substantially not cutting down housing wall, realize and use bigger and and then energy The roller of more high capacity, it has the bigger rated load clashed into for knock over cam or eccentric wheel.If necessary, on inwall Groove can also be complete without material position, so that roller is even radially slightly dashed forward with its annular termination in extreme circumstances Covered for lining.
Improved procedure of the invention, roller is sunk in the housing with the height of more than half more than it.Preferably, Roller should be placed in inside tappet with sinking to the full extent.This contributes to compact structure.
The suitable supporting form on pin of roller be roller on pin by rolling bearing or sliding bearing or theirs is mixed Conjunction form is operated, the pin using each end be contained in the housing inside contract and be configured to flat part region part post In the receiving portion of the bodily form or complete cylinder shape.Accordingly, roller can directly be operated by sliding bearing on pin, wherein, also may be used Expect and be provided with sliding gasket.Alternatively, rolling bearing such as needle bearing is provided with for this, or intermediate form can be used, That is, sliding bearing is used on another week side using rolling bearing on all side.
Moreover, it is proposed that crossing bridge is presented as independent plate disc, the plate disc is in the direction towards the first annular termination On abut on the secant shape joist in the region for inside contracting and being configured to flat part.A kind of preferred embodiment is：By through shell The mistake bridge that the end of body can also serve as anti-rotation lock shows as single plate disc, and the plate disc abuts in the housing week for inside contracting On the bottom side of side region, thus simply by the incoming housing of power.The independent plate disc allows the relatively simple of housing to make The property made, the housing can for example be manufactured by deep-draw or extrusion forming.But can also set, machining housing or be molded Technique produces housing.Used as the alternative of aforementioned schemes, housing can also be designed with mistake bridge single type.
According to the present invention, portion of leaving a blank is formed into the housing in chipless mode.Or, the portion of leaving a blank is used as described The molded portion of type on the outer circumferential side of housing is present.Set in specific embodiment of the invention, led on housing inner circumferential side Overmolding technique is carried out type pressure and is left a blank portion or at least these one of portions of leaving a blank, so as to form longitudinal fluting on housing outer circumferential side, it On the one hand have reinforce function, and on the other hand can serve as anti-rotation lock.
In addition, housing can be made to be made up of extrusion forming or deep-draw in chipless mode according to the present invention.
The tappet for being proposed should especially be applied or be applied in the fuel-injection pump of Quality Control or amount control internal combustion engine.Together Sample, it is also possible to apply the valve mechanism in internal combustion engine, or or axial piston compressor or radial plunger type compressor, or In corresponding axial plunger pump or radial plunger type pump.
Brief description of the drawings
The present invention is drawn by the following drawings：
Fig. 1 shows the stereogram of tappet；
Fig. 2 shows the top view of tappet；And
Fig. 3 shows the local side view for peeling off of tappet.
Specific embodiment
The tappet 1 of the high-pressure pump of the diesel fuel for being used herein to internal combustion engine is shown.Tappet 1 has cylinder shape housing 2, the shell Body in the region of first annular termination 3 on top its inner containment of inner circumferential side 5 be used for allow stroke knock over cam roller 4 it is exhausted It is most of.
In the axial direction below roller 4, single bridge 6 of crossing passes through the housing 2 being molded by steel board deep-draw.This crosses bridge Exist as individually stamping forming plate disc, its bottom side 8 for facing the second annular termination 7 of 2 bottom of housing is served as conduct The setting portion of the pump piston of tappet follower.
On the direction towards first annular termination 3, the opposed recessed area 15 of diameter that bridge 6 is supported on housing 2 is crossed Secant shape joist at.
As shown in addition, roller 4 is operated by the rolling bearing 12 on pin 11.Pin 11 is held with each end 13 It is contained in inside contracting respectively and being configured in the receiving portion 14 of part cylinder shape in the region 15 of flat part for housing 2.
Four channel-shaped portion of leaving a blank is introduced in chipless mode along the inner circumferential side 5 of housing 2, and roller 4 is stretched with its annular seamed edge 10 Enter this four channel-shaped to leave a blank in portion.By this extremely simple measure, successful installation of bigger and and then preferably carry Roller 4.
Reference numerals list
1 tappet
2 housings
3 annular terminations
4 rollers
5 inner circumferential sides
6 cross bridge
7 annular terminations
8 bottom sides
9 leave a blank portion
10 annular seamed edges
11 pins
12 bearings
13 ends
14 receiving portions
15 regions
16 outer circumferential sides

Claims (10)

1. a kind of tappet (1), the tappet has a housing (2), the housing in first annular termination (3) region at it at least Basic inner circumferential side (5) inner containment in cylinder shape has the roller for allowing periodicity stroke generator to clash into the section (4), wherein, in the axial direction in the roller (4) lower section, cross bridge (6) through the housing (2), it is described to cross facing for bridge The bottom side (8) of the second annular termination (7) of the housing (2) at least indirectly the setting portion served as tappet follower, its It is characterised by, four portions of leaving a blank (9) of channel-shaped extend thereon along the inner circumferential side (5) of the housing (2), the roller (4) In the portion of leaving a blank being stretched into its annular seamed edge (10).
2. tappet according to claim 1, it is characterised in that the roller (4) is heavy with the height of more than half more than it In entering the housing (2).
3. tappet according to claim 1, it is characterised in that the roller (4) on pin (11) by rolling bearing or Sliding bearing (12) or their mixed form are operated, and the pin (11) is contained in the housing (2) using each end (13) Inside contract and be configured in the receiving portion (14) of the part cylinder shape in the region of flat part (15) or complete cylinder shape.
4. tappet according to claim 3, it is characterised in that the bridge (6) of crossing is presented as independent plate disc, the plate Disk is towards abutting in cutting for region (15) for inside contracting and being configured to flat part on the direction of the first annular termination (3) On wire joist.
5. tappet according to claim 1, it is characterised in that the portion of leaving a blank (9) is formed into the shell in chipless mode In body (2).
6. tappet according to claim 5, it is characterised in that the portion of leaving a blank (9) is used as the periphery in the housing (2) The molded portion of type on side (16) is present.
7. tappet according to claim 6, it is characterised in that the part in the portion of leaving a blank (9) or the portion of leaving a blank (9) Serve as the anti-rotation lock of the tappet (1).
8. tappet according to claim 1, it is characterised in that the housing passes through extrusion forming or deep-draw in chipless mode It is made.
9. tappet according to claim 1, it is characterised in that the portion of leaving a blank (9) is used as the periphery in the housing (2) The molded portion of type on side (16) is present.
10. tappet as claimed in any of claims 1 to 9, it is characterised in that the tappet is used for pump or compression Machine.
CN201310199180.6A 2012-05-25 2013-05-24 Tappet Expired - Fee Related CN103423119B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210208791 DE102012208791A1 (en) 2012-05-25 2012-05-25 Plunger for e.g. high pressure pump, for pumping diesel fuel into quality or quantity-controlled internal combustion engine, has notch-like discharges longitudinally extending at casing, and roller with ring edges projecting into discharges
DE102012208791.5 2012-05-25

Publications (2)

Publication Number Publication Date
CN103423119A CN103423119A (en) 2013-12-04
CN103423119B true CN103423119B (en) 2017-06-06

Family

ID=49547052

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310199180.6A Expired - Fee Related CN103423119B (en) 2012-05-25 2013-05-24 Tappet

Country Status (2)

Country Link
CN (1) CN103423119B (en)
DE (1) DE102012208791A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012210176A1 (en) 2012-06-18 2013-12-19 Schaeffler Technologies AG & Co. KG tappet
EP2937566B1 (en) * 2014-04-22 2016-10-19 Aktiebolaget SKF Cam follower roller device, notably for a fuel injection pump
CN104632314B (en) * 2014-12-27 2017-09-19 海盐闻中冷挤压有限公司 A kind of inexpensive hydraulic tappet manufacturing process
EP3054116B1 (en) * 2015-02-05 2018-12-26 Aktiebolaget SKF Cam follower and method for manufacturing such a cam follower
CN111601964B (en) * 2018-06-15 2022-02-18 舍弗勒技术股份两合公司 Tappet for fuel pump
DE102020133082A1 (en) 2020-12-11 2022-06-15 Audi Aktiengesellschaft Piston pump with a pump piston for a drive device and corresponding drive device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273005A (en) * 1993-03-11 1993-12-28 General Motors Corporation Enlarged shaft roller lifter with retention means
DE102005042598A1 (en) * 2005-09-07 2007-03-22 Ab Skf Tappet for converting rotation motion into reciprocating motion in motor vehicle, has retaining unit attached to support unit for loss-proof holding of roller in support unit, where retaining unit is designed as cover
DE102009013132A1 (en) * 2009-03-13 2010-09-16 Schaeffler Technologies Gmbh & Co. Kg tappet
DE102009056306A1 (en) * 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102010022318A1 (en) * 2010-06-01 2011-12-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102010026362A1 (en) * 2010-07-07 2012-01-12 Schaeffler Technologies Gmbh & Co. Kg Roller shaft for fuel high pressure pump and valve train in quality or quantity-regular combustion engine, has separate contact body located in pocket, where contact body immediately contacts counter part or forehead

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273005A (en) * 1993-03-11 1993-12-28 General Motors Corporation Enlarged shaft roller lifter with retention means
DE102005042598A1 (en) * 2005-09-07 2007-03-22 Ab Skf Tappet for converting rotation motion into reciprocating motion in motor vehicle, has retaining unit attached to support unit for loss-proof holding of roller in support unit, where retaining unit is designed as cover
DE102009013132A1 (en) * 2009-03-13 2010-09-16 Schaeffler Technologies Gmbh & Co. Kg tappet
DE102009056306A1 (en) * 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102010022318A1 (en) * 2010-06-01 2011-12-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102010026362A1 (en) * 2010-07-07 2012-01-12 Schaeffler Technologies Gmbh & Co. Kg Roller shaft for fuel high pressure pump and valve train in quality or quantity-regular combustion engine, has separate contact body located in pocket, where contact body immediately contacts counter part or forehead

Also Published As

Publication number Publication date
CN103423119A (en) 2013-12-04
DE102012208791A1 (en) 2013-11-28

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Address after: German Herzogenaurach

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Granted publication date: 20170606