CN101268254A - Asymmetrical rocker arm for a valve gear of an internal combustion engine - Google Patents
Asymmetrical rocker arm for a valve gear of an internal combustion engine Download PDFInfo
- Publication number
- CN101268254A CN101268254A CNA200680034414XA CN200680034414A CN101268254A CN 101268254 A CN101268254 A CN 101268254A CN A200680034414X A CNA200680034414X A CN A200680034414XA CN 200680034414 A CN200680034414 A CN 200680034414A CN 101268254 A CN101268254 A CN 101268254A
- Authority
- CN
- China
- Prior art keywords
- sidewall
- rocking bar
- rocker arm
- opening
- crosspiece
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000002000 scavenging effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000005476 soldering Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
Abstract
The invention relates to a rocker arm (1) for a valve gear of an internal combustion engine. Said rocker arm is formed by a thin-walled sheet steel and two sidewalls (2a, 2b), which are connected to each other by means of a transversal bar (3). The rocker arm (1) comprises an end (4) with a gripping surface (5) for a cam and a contact surface (7) for admitting a gas exchange valve on the other end thereof (6). Two aligned to each other orifices (8) extending through the side walls (2a, 2b) between the ends (4, 6), are used for actuating the rocker arm (1) in such a way that it is rotatable about an axis.; The rocker arm (1) is recessed at least at the end (4) of the transversal rod (3), wherein the sidewalls (2a, 2b) are substantially parallel in this area and comprises two aligned holes (9) for receiving a bolt (10) provided with a cam friction roller in the form of the gripping surface (5). The side walls (2a, 2b) are provided with the orifices (8) at least on the central part thereof (12) in an mutual asymmetric continuation. The inventive rocker arm is particularly suitable for mounting in narrow areas such as, for example, in two-wheel or small unit engines. In addition, it has low production cost.
Description
Technical field
The present invention relates to a kind of rocking bar of engine valve transmission device, this rocking bar is made by the thin-walled steel plate, have two by the interconnective sidewall of crosspiece, wherein, a working surface that is used for cam extends in an end of this rocking bar, and a surface of contact that is used at least indirectly scavenging air valve is loaded extends in another end, and between described end, but two aligned with each other, be used for rotation ground and in described sidewall, extend at the opening of this rocking bar of axle upper support.
Background technique
The rocking bar of being made by steel plate is counted as into same type, and they take the shape of the letter U usually in cross section and substantially symmetrically constitute with respect to its longitudinal center's face.If this cam pack will be installed in the valve device that for example is used for two-wheel vehicle or is used for the small displacement engine of miniature instrument, so installation question may appear.Outstanding member may unnecessarily limit the required corner of this rocking bar.
In addition, usually do not satisfy the requirement of lightweight and low manufacture cost aspect according to the rocking bar of prior art.
Summary of the invention
Therefore, the objective of the invention is to, a kind of rocking bar of the above-mentioned type is provided, wherein overcome pointed shortcoming.Particularly, such rocking bar should be built in the narrow and small structure space and obtain optimization aspect lightweight and the cost.
According to the present invention, described purpose realizes like this, be that described rocking bar is reserved the space by crosspiece at least on one end thereof, wherein said sidewall is substantially parallel each other and have two holes aligned with each other in this zone, in these two holes, hold or can hold the pin that has as the cam driving wheel (Nockenanlaufrolle) of working surface, and wherein on described sidewall, in having the intermediate portion in these holes, it has trend asymmetrical relative to one another at least.
Therefore, there is such rocking bar, in this rocking bar, overcome effectively and start pointed shortcoming.Sometimes also may be applied in according to rocking bar of the present invention in the lever and cylinder cap member or the contacted occasion of internal-combustion engine member of symmetry.Therefore, the sidewall of described rocking bar has been avoided above-mentioned member approx.In addition, it is evident that, at least therein on end by having reduced the valve device quality of swing with its space apart from the sidewall of minimum and simultaneous crosspiece
Can form in one or more drawing procedure according to sidewall of the present invention " curved part ".Therefore, in plan view, create at least one sidewall by described " curved part " and to be similar to profile Z-shaped or S shape, and another sidewall can optionally be followed this profile.But can conceive and be arranged to, described " curved part " is designed to unlike described sidewall just now strong.
In the zone of the end reserving the space that is configured to fork-shaped according to the present invention of rocking bar, can conform with the destination and use a rotating wheel that is bearing on the pin.Wheel optionally via suitable roll body for example needle roller on pin, turn round.But also can be envisaged in slip effect in this zone sometimes.The present invention also is embodied as the end of reserving the space that does not have fork-shaped in case of necessity.
In improvement project of the present invention, set, on another end of rocking bar integratedly from the crosspiece of this rocking bar outwards and at the flange that forms hollow cylindrical away from the direction of valve.This flange can also for example form before the bending operation of sidewall.This flange conforms with the destination and is used to install and is used to adjust being threaded of valve clearance.This flange also can extend on the valve direction in case of necessity.
Set especially, sidewall can connect by crosspiece on its bottom side, the feasible profile that creates U-shaped like.Yet, also can imagine and be arranged to, produce the profile that is similar to inverted U-shaped profile or is similar to H shape.
Set in concrete scheme of the present invention, the opening in the sidewall constitutes integratedly from the outstanding bearing sleeve that forms of these openings.For example these bearing sleeves also can outwards protrude in sidewall.But also can imagine and be arranged to, bearing sleeve is to internal shaping.In view of described lining forms, needn't increase cost of production.Also can use rolling bearing in the zone of bearing sleeve, rocking bar just directly rubs on its axle by this rolling bearing and turns round minimumly.
Also set except the foregoing description, the opening in the zone line of preferred arrangements at rocking bar in these two flexible programs on the sidewall is connected by the pipe fitting that is fixed therein.By this pipe fitting, rocking bar is turning round on the axle or on the similar structure.In order further to reduce wearing and tearing, also can in this zone, use rolling bearing.
Fully also can implement to be used in haulage rod or the swing arm according to measure of the present invention.
Description of drawings
The present invention is described in detail with reference to the accompanying drawings to conform with the destination.Shown in the figure:
Fig. 1 to 3 illustrates first embodiment of rocking bar with space view, and this rocking bar has integratedly and protrudes the bearing sleeve that forms from opening sidewall, and
Fig. 4 to 5 illustrates optional flexible program according to rocking bar of the present invention with space diagram, and this rocking bar has the pipe fitting that extends in the opening of sidewall.
Embodiment
Accompanying drawing discloses a kind of rocking bar 1 of valve device of internal-combustion engine.This rocking bar has sidewall 2a, the 2b of two longitudinal extensions, and these two sidewalls interconnect by crosspiece 3 on its bottom side.
In the zone of an end 4, in sidewall 2a, 2b, make hole 9.As shown in Figure 5, the cam driving wheel 11 of a running on pin 10 can be set as working surface 5 in this zone.
On another relative end 6, rocking bar 1 has one and is used at least indirectly surface of contact 7 that at least one scavenging air valve is loaded.This surface of contact 7 from connect at its downside sidewall 2a, 2b the upside of crosspiece 3 protrude the flange 16 (also referring to Fig. 4) that forms and be configured to hollow cylindrical.A threaded piece 17 extends in this flange.Via the head of this threaded piece 17, thereby rocking bar 1 can contact with an end of scavenging air valve.
As mentioned above, crosspiece 3 connects sidewall 2a, 2b on the zone of the bottom of described sidewall, makes to have formed the profile that is similar to U-shaped.But in the zone of an end 4, crosspiece 3 is reserved the space therein.In order to reduce weight, also can also be provided with other the zone of reserving the space sometimes, for example the through hole of the window-like in sidewall makes crosspiece 3 have the discontinuities of window-like.
In the zone in the space of extending on end 4, sidewall 2a, 2b are than keeping narrowlyer at other extension of section therein.Be shown clearly in most as Fig. 2, from plan view, one of them sidewall 2a is transited into the section 13 that is the peviform projection to form intermediate portion 12 to an end 4.Therefore, in plan view, formed to be similar to and had the very profile of the S shape of macrobending portion.In the form of implementation according to Fig. 1 to 3, though the trend that in fact the second sidewall 2b is following the first side wall 2a, its curved configuration gets less.Such solution also can be set sometimes, and sidewall 2a, 2b have the trend that is mutually symmetrical in this solution.
On the contrary, in according to Fig. 4,5 form of implementation, though sidewall 2a has the trend of above-mentioned protrusion, another sidewall 2b only follows this trend in the edge section.This another sidewall basically from one of them end up to intermediate portion 12 straight-line extensions or only crooked tinily.
In addition, can find out that also sidewall 2a, 2b extend agley from plan view is obviously less each other on from middle part 12 to the direction of another end 6, wherein sidewall 2a, 2b are parallel to each other again on another end 6, as mentioned above, in this zone, be shaped on surface of contact 7.
In the solution that proposes according to Fig. 1 to 3, the opening 8 among sidewall 2a, the 2b constitutes the bearing sleeve 19 from these sidewalls protrusion formation of one.Because this bearing sleeve 19 forms, the extra fixing device of this bearing sleeve is for example because welding etc. are unnecessary, as being put down in writing in background technique.
On the contrary, in according to Fig. 4,5 solution, in the opening 8 of sidewall 2a, 2b for example by being pressed into or the fixing thin-wall pipe 18 of similar approach.This pipe fitting 18 conforms with the destination and does not outwards protrude in sidewall 2a, 2b.By this pipe fitting 18, rocking bar 1 can directly be fixed on axle or the similar suitable rotating center.
Above-mentioned pipe fitting 18 also can protrude in one or these two sidewall 2a, 2b in case of necessity, and selectively is provided with opening as being used for the hole of oiling agent in outstanding zone.In addition, also can stipulate, the pipe fitting with axle collar etc. is set, so that simplify the installation of this pipe fitting or determine the position of this pipe fitting in the opening that inserts sidewall 2a, 2b the time.
List of numerals
1 rocking bar
2 sidewalls (a, b)
3 crosspieces
4 one ends
5 working surfaces
6 another ends
7 surface of contact
8 openings
9 holes
10 pins
11 cam driving wheels
12 intermediate portions
13 sections
14 sections
15 sections
16 flanges
17 threaded pieces
18 pipe fittings
19 bearing sleeves
Claims (7)
1. the rocking bar of an engine valve transmission device (1), this rocking bar is made by the thin-walled steel plate, and have two by the interconnective sidewall (2a of a crosspiece (3), 2b), wherein, a working surface (5) that is used for cam is gone up extension in an end (4) of this rocking bar (1), and a surface of contact (7) that is used at least indirectly scavenging air valve being loaded extends in another end (6), and in described end (4,6) between, two aligned with each other, being used for the opening (8) that rocking bar (1) is bearing on the axle swingably extends at described sidewall, it is characterized in that, described rocking bar (a 1) end (4) is at least therein upward reserved the space by crosspiece (3), wherein said sidewall (2a, 2b) substantially parallel each other and have two holes aligned with each other (9) in this zone, in these holes, hold and maybe can hold a pin (10), described pin has cam driving wheel (11) as working surface (5), and sidewall (2a wherein, 2b) in having the intermediate portion (12) of opening (8), it has trend asymmetrical relative to one another at least.
2. according to the described rocking bar of claim 1, it is characterized in that, a sidewall (2a) is transited into the section (13) (intermediate portion (12)) that is the peviform projection from plan view to one of them end (4), another sidewall (2b) or follow this profile basically wherein with its section (14), but has recessed less section (intermediate portion (12)), perhaps have straight basically, maximum sections (1 5) that are recessed at the edge, and sidewall (2a wherein, 2b) crooked each other as less to extend at ratio on the direction of another end (6) to described one of them end (4) to intermediate portion (12), and on another end (6), be parallel to each other basically.
3. according to the described rocking bar of claim 1, it is characterized in that, for the surface of contact (7) that is configured for scavenging air valve, described crosspiece (3) has on another end (6) and protrudes in its upside flange (15), hollow cylindrical (16) integratedly, installs in this flange the threaded piece (17) that is used to adjust the valve clearance maybe can be installed.
4. according to the described rocking bar of claim 1, it is characterized in that described crosspiece (3) is joined to one another sidewall (2a, 2b) in its bottom section.
5. according to the described rocking bar of claim 1, it is characterized in that described opening (8) constitutes and protrude the bearing sleeve (19) that is shaped integratedly from described sidewall in sidewall (2a, 2b).
6. according to the described rocking bar of claim 1, it is characterized in that the opening (8) of described sidewall (2a, 2b) is connected by the pipe fitting (18) that is fixed therein, rocking bar (1) can be fixed on the axle by this pipe fitting.
7. according to the described rocking bar of claim 1, it is characterized in that, described pipe fitting (18) by a kind of fixation method as compacting, soldering, melting welding, bonding, roll extrusion, be pressed into or bond remain on as described in the opening (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005046897.7 | 2005-09-30 | ||
| DE200510046897 DE102005046897A1 (en) | 2005-09-30 | 2005-09-30 | Rocker arm of valve train assembly of internal combustion engine has thin walled steel sheet wherein rocker arm is hollow at end of cross beam, whereby end walls are substantially parallel in range to each other |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101268254A true CN101268254A (en) | 2008-09-17 |
Family
ID=37682795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200680034414XA Pending CN101268254A (en) | 2005-09-30 | 2006-09-12 | Asymmetrical rocker arm for a valve gear of an internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101268254A (en) |
| DE (1) | DE102005046897A1 (en) |
| WO (1) | WO2007039414A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828793A (en) * | 2011-06-15 | 2012-12-19 | 谢夫勒科技股份两合公司 | Intermediate lever |
| CN102852579A (en) * | 2011-05-30 | 2013-01-02 | 谢夫勒科技股份两合公司 | Rocker arm |
| CN104662263A (en) * | 2012-08-02 | 2015-05-27 | 舍弗勒技术股份两合公司 | Rocker arm |
| CN107701254A (en) * | 2017-10-13 | 2018-02-16 | 厦门艾尔普斯汽车零配件有限责任公司 | Rocking arm |
| CN108868934A (en) * | 2017-05-16 | 2018-11-23 | 现代自动车株式会社 | Roller finger follower |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007012734A1 (en) | 2007-03-16 | 2008-09-18 | Schaeffler Kg | Rocker arm for valve gear of internal combustion engine in e.g. two-wheeler, has axle bearing integrated in crossbar, formed as half-shell and aligned with opening, where half shell has uniform radius, which is adapted to radius of openings |
| DE102007012797A1 (en) | 2007-03-16 | 2008-09-18 | Schaeffler Kg | Rocker arm for valve gear of internal-combustion engine, has semi-shell aligned to openings and integrated in cross beam for supporting body in axis, where latch and seam connected with semi-shell are arranged in cross beam |
| DE102008009901A1 (en) | 2007-04-27 | 2008-11-06 | Schaeffler Kg | Rocker arm for valve drive of internal combustion engine has lever body with double U-shaped cross-sectional profile in central region and two axially adjacent and oppositely open profile sections |
| DE102008019809A1 (en) | 2007-10-05 | 2009-04-09 | Schaeffler Kg | Rocker arm for actuating gas exchange valve of internal combustion engine, has walls crossing over at end section of body in front wall of web, which has longitudinal profile on side of screw turned away from disengaging surface |
| FR2928409B1 (en) * | 2008-03-06 | 2015-06-19 | Skf Ab | CULBUTOR FOR INTERNAL COMBUSTION ENGINE |
| CN101566081B (en) * | 2008-04-25 | 2013-06-12 | 谢夫勒科技股份两合公司 | Valve rocker of valve mechanism of internal combustion engine |
| FR2931198A1 (en) * | 2008-05-19 | 2009-11-20 | Skf Ab | CULBUTOR FOR INTERNAL COMBUSTION ENGINE |
| DE102008036057A1 (en) | 2008-08-01 | 2010-02-04 | Schaeffler Kg | Rocker arm for valve train of internal combustion engine, comprises longitudinal lever body made of metal sheet material, which comprises base bent in its longitudinal central section, and outer walls spaced from each other |
| DE102011003212A1 (en) | 2011-01-26 | 2012-07-26 | Schaeffler Technologies Gmbh & Co. Kg | Modular-composite crossbeam-free rocker arm for valve train of internal combustion engine of motorcycle, has side wall whose end is fixed with crossbeam at forehead which lies on connection bracket |
| DE102011012614A1 (en) * | 2011-02-28 | 2012-08-30 | Neumayer Tekfor Holding Gmbh | Cam follower and valve train |
| DE102012220142A1 (en) | 2012-11-06 | 2014-05-08 | Schaeffler Technologies Gmbh & Co. Kg | Blechkipphebel |
| DE102012222785A1 (en) | 2012-12-11 | 2014-06-12 | Schaeffler Technologies Gmbh & Co. Kg | Lever-like-cam follower i.e. rocker arm, for valve train of internal combustion engine, has cathedral or lens-like projection part extending away from underside of cross beam, where follower consists of steel sheet |
| DE102013201661A1 (en) | 2013-02-01 | 2014-08-07 | Schaeffler Technologies Gmbh & Co. Kg | Lever type cam follower for valve train of internal combustion engine of motorcycle, has cross beam whose one end is provided with unthreaded opening in which dome-shaped neck adjustment element is fixed |
| DE102013202135A1 (en) | 2013-02-08 | 2014-08-28 | Schaeffler Technologies Gmbh & Co. Kg | Lever-like cam follower for valve train of internal combustion engine for e.g. motorcycle, has separate reinforcing strut mounted at side walls and resting at height section of side walls, where height section faces away from cross beam |
| DE102013210390A1 (en) | 2013-06-05 | 2014-12-11 | Schaeffler Technologies Gmbh & Co. Kg | rocker arm |
| DE102013211280A1 (en) | 2013-06-17 | 2014-12-18 | Schaeffler Technologies Gmbh & Co. Kg | rocker arm |
| DE102013212072A1 (en) | 2013-06-25 | 2015-01-08 | Schaeffler Technologies Gmbh & Co. Kg | rocker arm |
| DE102013220850A1 (en) | 2013-10-15 | 2015-04-16 | Schaeffler Technologies Gmbh & Co. Kg | Rocker arm for a valve train of an internal combustion engine |
| DE102014208810A1 (en) * | 2014-05-09 | 2015-11-12 | Schaeffler Technologies AG & Co. KG | Rocker arm assembly for a valve train of an internal combustion engine and method for mounting a rocker arm assembly |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2176083A (en) * | 1937-05-22 | 1939-10-17 | Toledo Stamping And Mfg Compan | Rocker arm |
| US2338726A (en) * | 1942-01-06 | 1944-01-11 | James M Leake | Rocker arm |
| GB792819A (en) * | 1955-10-18 | 1958-04-02 | Austin Motor Co Ltd | Valve-operating rockers for overhead valve internal combustion engines |
| GB953022A (en) * | 1960-12-15 | 1964-03-25 | Ford Motor Co | Valve gear for internal combustion engines |
| US3418985A (en) * | 1967-09-01 | 1968-12-31 | Hirose Kazuo | Rocker arm for internal combustion engines |
| US5010857A (en) * | 1990-08-15 | 1991-04-30 | Ni Industries, Inc. | Rocker arm |
| US5671707A (en) * | 1996-02-28 | 1997-09-30 | Cummins Engine Company, Inc. | Rocker level oil shroud |
| DE19631653A1 (en) * | 1996-08-05 | 1998-02-12 | Hatz Motoren | Rocker arm for an internal combustion engine |
| US6041747A (en) * | 1997-04-23 | 2000-03-28 | Koyo Seiko Co., Ltd. | Rocker arm |
| DE19950990A1 (en) * | 1999-02-19 | 2000-08-24 | Schaeffler Waelzlager Ohg | Rocker lever for valve gear of internal combustion engine has separate oil carrying passage on upper side of cross member connecting side walls and originates from end of oil path from pushrod and leads to end of valve |
| AT4297U1 (en) * | 2000-05-30 | 2001-05-25 | Avl List Gmbh | VALVE LEVER FOR VALVE CONTROL OF AN INTERNAL COMBUSTION ENGINE |
| US6807932B2 (en) * | 2001-11-22 | 2004-10-26 | Ntn Corporation | Rocker arm |
-
2005
- 2005-09-30 DE DE200510046897 patent/DE102005046897A1/en not_active Ceased
-
2006
- 2006-09-12 CN CNA200680034414XA patent/CN101268254A/en active Pending
- 2006-09-12 WO PCT/EP2006/066258 patent/WO2007039414A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852579A (en) * | 2011-05-30 | 2013-01-02 | 谢夫勒科技股份两合公司 | Rocker arm |
| CN102852579B (en) * | 2011-05-30 | 2017-03-01 | 舍弗勒技术股份两合公司 | Rocking bar |
| CN102828793A (en) * | 2011-06-15 | 2012-12-19 | 谢夫勒科技股份两合公司 | Intermediate lever |
| CN104662263A (en) * | 2012-08-02 | 2015-05-27 | 舍弗勒技术股份两合公司 | Rocker arm |
| CN108868934A (en) * | 2017-05-16 | 2018-11-23 | 现代自动车株式会社 | Roller finger follower |
| CN107701254A (en) * | 2017-10-13 | 2018-02-16 | 厦门艾尔普斯汽车零配件有限责任公司 | Rocking arm |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005046897A1 (en) | 2007-04-05 |
| WO2007039414A1 (en) | 2007-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |