CN103502583B - Intermediate lever - Google Patents
Intermediate lever Download PDFInfo
- Publication number
- CN103502583B CN103502583B CN201280021514.4A CN201280021514A CN103502583B CN 103502583 B CN103502583 B CN 103502583B CN 201280021514 A CN201280021514 A CN 201280021514A CN 103502583 B CN103502583 B CN 103502583B
- Authority
- CN
- China
- Prior art keywords
- intermediate lever
- positive end
- face
- lever
- cam
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims 2
- 239000004615 ingredient Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
- F01L2013/0068—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Transmission Devices (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A kind of intermediate lever (1) of the variable stigmatic opening transmission device for internal combustion engine, this intermediate lever exists as compact piece of the similar beam type closed, wherein, implement be used for the supporting surface (3) of chute guide rail and implement the abutment face (4) for cam disc in the region of a positive end (2), wherein, it is in another positive end (5) for the stroke changeable of cam being delivered to the face (6) of the crawl section of follower, wherein, pairing moving surface (8) for stroke cam extends in positive end (2, 5) in the section (7) between, and wherein, abutment face and pairing moving surface (4, 8) and for stroke changeable transmission face (6) be sliding surface.
Description
Technical field
The present invention relates to the intermediate lever of a kind of variable stigmatic opening transmission device for internal combustion engine, its
In, in the region of a positive end, implement supporting surface and enforcement for chute guide rail be used for
The abutment face of cam disc, wherein, for being delivered to the crawl of follower by the stroke changeable of cam
The face in portion is on another positive end, and the pairing moving surface being used for stroke cam extends in
In section between end.
Background technology
Such intermediate lever is known from Fig. 5, Fig. 6 of DE 10 2,006 018 512 A1.
This intermediate lever has the sidewall of two beam type.On a positive end, these sidewalls enclose altogether
Live the roller of three rolling bearings, two rollers therein are used as to support roller, for sliding
Pairing campaign on groove guide rail, and the roller between the two roller is used as abutment face,
For cam disc.At centre portion, intermediate lever has the roller conduct of additional rolling bearing
Pairing moving surface is for stroke cam.On another positive end, sidewall is close to each other for shape
Become the stroke transfer surface making these sidewalls connect.
The shortcoming of above-mentioned design is the structure of its more complicatedization.Intermediate lever is with high cost
, be made up of multiple procedure of processings and in batch production, therefore remain expensive rushing
The mode of bent forming process of bending is manufactured by sheet material.Four rollers and support in final stage
Combination be relatively high cost equally.Because sidewall surrounds roller in outside, so middle thick stick
Bar is likely made to wide.
Summary of the invention
Therefore, the present invention is based on following task, it is provided that the intermediate lever of a kind of the above-mentioned type, borrows
This shortcoming pointed by elimination.Particularly, should design one can be to manufacture the most at low cost
And the intermediate lever that can install simply.
According to the present invention, this task is done in such a way that i.e., and intermediate lever is the most substantially to seal
Compact piece of the similar beam type closed, and abutment face and pairing moving surface and for stroke changeable
The face of transmission is sliding surface.
Thus, it is provided that a kind of intermediate lever not having disadvantages mentioned above.This intermediate lever is the simplest
The metal slabs singly using the width that thickness preferably has intermediate lever carry out punching or with forging
The method of making manufactures.This intermediate lever can also in the way of machining, (milling be all as an alternative
Such as this type of) or at least by cutting polish in the way of or by casting/sintering manufacture.This
Outward, intermediate lever can also be made up of section bar.It is also contemplated that it is metal powder injection molded
(MIM) structural scheme.Therefore intermediate lever as simple block or is deposited as solid member
?.Above-mentioned brake forming process is omitted.
Additionally, due to eliminate combined roller, intermediate lever be made to relative narrower and
Intermediate lever can be manufactured with low-down cost.In existing sliding surface or these sliding surfaces
At least one can also such as be stood at single wearability by painting trowel coating or heat treatment
Reason.
Intermediate lever can be in the full variable stigmatic opening transmission device of non-air throttle spatial load forecasting
Find application, as used under " Valvetronic " indicates by Bavaria engine shop
Intermediate lever the same.
The protuberance stretching out in outer wall an end can be according to the present invention a change side
Case is integrally connected with intermediate lever, or can be according to another design as by independence
The component fixed and exist, this protuberance is suggested to or leads for chute as supporting surface
Rail otherwise as abutment face for cam disc.For the design of integral type, compacting,
Impact extrusion, forging etc. or also machining manufacture are applicable.For multipart design
For, it is considered to engage, extrude, weld, spin, the method such as ca(u)lk.Respective free end is also
Can start to stretch out to both sides from outer wall, independent strengthening member on these free ends, or
During independent component utilizes free end to reinforce in the hole of the outer wall of intermediate lever.
All of (abutment face and pairing moving surface, for stroke changeable transmission face) also may be used
Being smooth or if desired as convex.
According to it is proposed that change programme in the case of, in this scenario, lead for chute
The supporting surface of rail is present in the both sides of intermediate lever on a positive end, and this makes intermediate lever
There is the best anti-tipping property.
In addition professional readily recognizes that, intermediate lever is had by scheme constructed as below
There is a kind of the simplest, elongated moulding, in this structural scheme or for cam disc
Abutment face or the supporting surface for chute guide rail is used as lever material a positive end
The lobe (Auswoelbung) in front, cost is produced highly beneficial in batch production by this
Impact.Being also suitable for cam pairing moving surface equally, this cam pairing moving surface is preferably placed at
About medium position between the positive end of intermediate lever.
For the face of variable transmission cam stroke in another end by zero stroke range and stroke
Scope forms.This face is integrally fixed on intermediate lever, and this face extends in prolongation
On the bottom side in portion, this extension is to stretch out to both sides along lever swing direction arciformly.If desired,
It is also contemplated that with the change programme of joint method or following this design side in this region
Case, only stretches out an extension in this design.
Preferably, in order to guide the cam return spring to intermediate lever generation effect, contact pin
Integrally should stretch out from the upside of extension or front, end.These contact pin can be the simplest
Ground is manufactured by compacting, bending or machining.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is illustrated.Wherein:
Fig. 1 illustrates the axonometric chart of the first change programme of intermediate lever；And
Fig. 2 illustrates the axonometric chart of the second change programme of intermediate lever.
Detailed description of the invention
Show the intermediate lever 1 of a kind of variable stigmatic opening transmission device for internal combustion engine.In this
Between lever there is the geometry of similar beam type of a kind of closing, and formed by steel plate punched.
According to Fig. 1, intermediate lever 1 has for chute guide rail in the region of positive end 2
Supporting surface 3, this supporting surface is integrally fixed and is existed as sliding surface.This supporting surface
3 are made up of two similar fan-shaped protuberances 10, and these protuberances 10 are at a positive end 2
It is located parallel on the outer wall 9 that lever swing direction extends.These protuberances 10 are respectively provided with position
Periphery section 11 in top for chute guide rail against.Additionally, surrounded by protuberance 10
And the abutment face 4 for cam disc being configured to sliding surface extends on this positive end 2,
This abutment face 4 is deposited beyond protuberance 10 and as the lobe 12 in front of lever material
?.
The face 6 integrally fixed is on another positive end 5 of intermediate lever 1, should
Face for being delivered to the crawl section of follower (draw bar) by the stroke changeable of cam.This face 6
It is positioned on the bottom side 18 of extension 16,17 and is manufactured to sliding surface equally, in this prolongation
Portion stretches out along lever swing direction to both sides.It is understood that, integrally fixed for two
Contact pin 20 stretch out on the front, end 19 of extension 16.Between the two contact pin 20
The end of bootable cam return spring, this cam return spring makes intermediate lever 1 load.
Pairing moving surface 8 for stroke cam is formed on the outer wall 15 of intermediate lever 1,
This outer wall extends transverse to lever swing direction on middle section 7, and this pairing is transported
Dynamic face is fabricated to the material protrusion integrally fixed, and this lobe is without departing from outer wall 15.
Again realize the slip crawl section for stroke cam.
As can be seen from Figure 2, the abutment face 4 for cam disc is positioned at centre at a positive end 2
On the outer wall 9 of lever 1, and this abutment face is by the protuberance 13 of two opposed similar sectors
Composition, has the superposed periphery section 14 for directly abutting cam disc on protuberance 13.
Periphery section 14 surrounds for the supporting surface 3 of chute guide rail and beyond this supporting surface 3, this
Support face is present on a positive end 2 as the lobe 12 of the material of intermediate lever 1.
Reference numerals list
Claims (8)
1. the intermediate lever (1) for the variable stigmatic opening transmission device of internal combustion engine, wherein,
In the region of a positive end (2), it is provided for the supporting surface (3) of chute guide rail and sets
Put the abutment face (4) for cam disc, wherein, for being delivered to servo-actuated by cam stroke changeable
The face (6) of the crawl section of part is on another positive end (5), and for stroke cam
The pairing moving surface (8) section (7) between described positive end (2,5) in extend,
It is characterized in that, described intermediate lever (1) is compact piece of beam type closed, and described supports
By face (4) and described pairing moving surface (8) and the described face (6) for stroke changeable transmission
It is sliding surface, described abutment face (4) and described pairing moving surface (8) and described for can
The face (6) of change stroke transmission is the ingredient of the integral type of described intermediate lever.
Intermediate lever the most according to claim 1, it is characterised in that two opposed circles
The protuberance (10) of shape or sector is positioned at described middle thick stick at the positive end of one (2) place
Being parallel on the outer wall (9) that lever swing direction extends, at described protuberance of bar (1)
It is directly toward in the periphery section (11) of the positive end of one (2) to be formed and leads for chute
The supporting surface (3) of rail.
Intermediate lever the most according to claim 2, it is characterised in that for cam disc
Abutment face (4) is as the lobe (12) of the cylinder segmentation of the material of described intermediate lever (1)
Being present on the positive end of one (2), wherein, described protuberance (10) is placed in described convex
Playing side, portion, described lobe (12) exceeds described protuberance.
Intermediate lever the most according to claim 1, it is characterised in that two opposed circles
The protuberance (13) of shape or sector is positioned at described intermediate lever (1) at positive end (2) place
Be parallel to lever swing direction extend outer wall (9) on, being directly toward of described protuberance
It is formed with described for described cam disc in the periphery section (14) of the positive end of one (2)
Abutment face (4).
Intermediate lever the most according to claim 4, it is characterised in that for chute guide rail
Supporting surface (3) as the lobe (12) of the cylinder segmentation of the material of described intermediate lever (1)
Being present on the positive end of one (2), wherein, described protuberance (13) is placed in described convex
Play portion (12) side, and beyond described lobe.
Intermediate lever the most according to claim 1, it is characterised in that described for described
The pairing moving surface (8) of stroke cam be formed on described intermediate lever (1) transverse to thick stick
On the outer wall (15) that bar swaying direction extends, and, described pairing moving surface or manufactured
Neat for the outer wall (9) extended with being parallel to lever swing direction with described intermediate lever (1)
The material protrusion that level land exists, or be manufactured to described transverse to ground, lever swing direction
The material protrusion that the outer wall (15) extended is widened in wing.
Intermediate lever the most according to claim 1, it is characterised in that described intermediate lever
(1) shaped by chipless method or manufactured by cutting process.
Intermediate lever the most according to claim 1, it is characterised in that in order to described separately
One positive end (5) is upper forms the described face (6) for stroke changeable transmission, described another
Individual positive end (5) has the extension (16,17) stretched out along lever swing direction in both sides,
The described face for stroke changeable transmission is there are at bottom side (18) place that described extension is public
(6), wherein, in the front, end of one of them extension of described extension (16,17)
(19) or stretch out two contact pin integrally connected (20) at upside, connect described
The end of bootable cam return spring between sheet, described cam return spring loads described centre
Lever (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011075236.6 | 2011-05-04 | ||
| DE102011075236A DE102011075236A1 (en) | 2011-05-04 | 2011-05-04 | intermediate lever |
| PCT/EP2012/052197 WO2012150052A1 (en) | 2011-05-04 | 2012-02-09 | Intermediate lever |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103502583A CN103502583A (en) | 2014-01-08 |
| CN103502583B true CN103502583B (en) | 2016-08-17 |
Family
ID=45592383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280021514.4A Expired - Fee Related CN103502583B (en) | 2011-05-04 | 2012-02-09 | Intermediate lever |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103502583B (en) |
| DE (1) | DE102011075236A1 (en) |
| WO (1) | WO2012150052A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012222373A1 (en) * | 2012-12-06 | 2014-06-12 | Schaeffler Technologies Gmbh & Co. Kg | intermediate lever |
| DE102014206314A1 (en) * | 2014-04-02 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Method for producing an intermediate lever |
| DE102016220394B3 (en) * | 2016-10-18 | 2017-12-28 | Schaeffler Technologies AG & Co. KG | Intermediate lever of a variable valve train |
| FI128066B (en) | 2017-06-06 | 2019-08-30 | Ponsse Oyj | Arrangement in a forest machine and forest machine |
| DE102020121201A1 (en) | 2020-08-12 | 2022-02-17 | Schaeffler Technologies AG & Co. KG | Intermediate lever for a variable-stroke valve drive of an internal combustion engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1143118A2 (en) * | 2000-04-07 | 2001-10-10 | Bayerische Motoren Werke Aktiengesellschaft | Device for varying the valve lift in an engine cylinder head |
| WO2004088099A1 (en) * | 2003-03-29 | 2004-10-14 | Boesl Flierl Gerlinde | Variable valve lift control system for a combustion engine with underneath camshaft |
| EP1496211A1 (en) * | 2003-07-08 | 2005-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Rocker arm for a variable lift valve drive |
| WO2005052326A1 (en) * | 2003-10-29 | 2005-06-09 | Ricardo Uk Limited, | Engine valvegear |
| EP1847691A2 (en) * | 2006-04-21 | 2007-10-24 | Schaeffler KG | Roller element for a pivotable machine part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100980871B1 (en) * | 2007-12-14 | 2010-09-10 | 기아자동차주식회사 | Variable valve lift set |
-
2011
- 2011-05-04 DE DE102011075236A patent/DE102011075236A1/en not_active Withdrawn
-
2012
- 2012-02-09 WO PCT/EP2012/052197 patent/WO2012150052A1/en active Application Filing
- 2012-02-09 CN CN201280021514.4A patent/CN103502583B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1143118A2 (en) * | 2000-04-07 | 2001-10-10 | Bayerische Motoren Werke Aktiengesellschaft | Device for varying the valve lift in an engine cylinder head |
| WO2004088099A1 (en) * | 2003-03-29 | 2004-10-14 | Boesl Flierl Gerlinde | Variable valve lift control system for a combustion engine with underneath camshaft |
| EP1496211A1 (en) * | 2003-07-08 | 2005-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Rocker arm for a variable lift valve drive |
| WO2005052326A1 (en) * | 2003-10-29 | 2005-06-09 | Ricardo Uk Limited, | Engine valvegear |
| EP1847691A2 (en) * | 2006-04-21 | 2007-10-24 | Schaeffler KG | Roller element for a pivotable machine part |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012150052A1 (en) | 2012-11-08 |
| CN103502583A (en) | 2014-01-08 |
| DE102011075236A1 (en) | 2012-11-08 |
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| ASS | Succession or assignment of patent right |
Owner name: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG Effective date: 20150723 |
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Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES AG & CO. KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES GmbH & Co.KG Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES GmbH & Co.KG Address before: German Herzogenaurach Applicant before: Fifth Schaeffler investment management GmbH & Co.KG |
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Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG TO: SCHAEFFLER TECHNOLOGY GMBH + CO. KG Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., KG TO: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG Free format text: CORRECT: ADDRESS; FROM: |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150723 Address after: German Herzogenaurach Applicant after: Fifth Schaeffler investment management GmbH & Co.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES AG & CO. KG |
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Granted publication date: 20160817 |