CN103827450B - Rocking arm for the valve actuating mechanism of internal combustion engine - Google Patents
Rocking arm for the valve actuating mechanism of internal combustion engine Download PDFInfo
- Publication number
- CN103827450B CN103827450B CN201280035971.9A CN201280035971A CN103827450B CN 103827450 B CN103827450 B CN 103827450B CN 201280035971 A CN201280035971 A CN 201280035971A CN 103827450 B CN103827450 B CN 103827450B
- Authority
- CN
- China
- Prior art keywords
- rocking arm
- recess
- pin
- side wall
- fulcrum post
- 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
- 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
- F01L1/185—Overhead end-pivot rocking arms
-
- 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
- F01L2305/02—Mounting of rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
According to the present invention, in the rocking arm for the valve actuating mechanism of internal combustion engine, rocking arm（21）Side wall（22,23）Have respectively along pin（25）Axial direction outwards deform be used for pin（25）Side abutting region（29,30）, wherein the rocking arm is fabricated to plate forming part and the recess with alignment with two（28）Side wall（22,23）, fulcrum post（25）Inserted with its end regions in the recess, the fulcrum post is used for the roller that can be rotated for surrounding the fulcrum post（24）, its central roll（24）It is set to for can be rollably against the cam of camshaft.Thus, with the anti-shotpin of simple mode in structure from rocking arm（21）It is middle to remove.
Description
Technical field
The present invention relates to a kind of rocking arm of the valve actuating mechanism for internal combustion engine, the rocking arm is fabricated to plate forming part
And the side wall of the recess with alignment with two, fulcrum post is inserted in the recess with its end regions, the fulcrum post
For it is can rotating, the roller of the fulcrum post is surrounded, wherein be set to be used for can be rollably against eccentric wheel or cam for the roller.
Background technology
Valve actuating mechanism with the rocking arm for starting the type is known from document DE4234868A1.Here, rocking arm
The recess inserted as the end regions of bearing screw rod, in each side wall with hole.On pin in the hole of the side wall of rocking arm
In be fixed from illustrated from the document.For the valve actuation with the end regions for accommodating fulcrum post
In the known rocking arm of mechanism, forming method is needed for fixation of the pin on the side wall of rocking arm, for example pin is suppressed or
Riveting, or need additional locking member.
However, by the way that reshaping method is applied on pin, the selection for the raw material of the pin is restricted.In addition,
Compacting or the riveting machine for needing to expend for reshaping, extend the whole week of manufacture method by the function of the compacting or riveting machine
Phase.The structural solutions with additional locking member for pin to be fixed in the corresponding hole of side wall have the disadvantage that
It is, its channel profiles for needing additional component and usually requiring pin.
The content of the invention
The present invention is based on following purpose, that is, a kind of rocking arm for having and being provided with fulcrum post is proposed, in the rocking arm
Both the reshaping method of pin need not be used for also without additional locking component.
According to the present invention, the purpose is by making the use that there is the side wall of rocking arm the axial direction along pin outwards to deform respectively
Realized in the abutting region of the side of pin.
Abutting region for pin can be on the wall of side from side wall top edge.The top edge of side wall and the ring week in roller
On contact site it is adjacent, cam is applied on roller at the contact site.Pin can with the side region on its top against
On the abutting region of side wall.It thus limit the Axial mobility of pin, and in addition, the rigidity of rocking arm is by means of being inserted
Pin keeps constant or is even enhanced according to structure space.
The abutting region of the outside deformation of side wall can be constituted with channel section shape.The recess of side wall have cylinder,
The profile being open upwards, the angle of circumference of the recess or more than 180 degree, then wherein cylindrical pin is solid with its end regions
Surely it is snapped in recess.
Or the angle of circumference of the profile of recess is less than or equal to 180 degree, then pin loosely inserts recessed with its end regions
In mouthful, i.e., it is not fixed therein.But, in both cases, all pin is radially shape-ordinatedly maintained in recess.
By means of being according to the obtainable advantage of rocking arm of the present invention：Unrestricted choice, simplification for the raw material of pin
Form fit that installation process, anti-shotpin are removed in the axial direction and the rigidity improved if necessary relative to known rocking arm.
Brief description of the drawings
Be shown in the drawings one embodiment of the present of invention, and be described in detail below with according to previously known
The comparison of the rocking arm of prior art.Accompanying drawing is shown：
Fig. 1 shows the perspective representation of the rocking arm according to the present invention；
Fig. 2 shows the side view of rocking arm；
Fig. 3 shows the vertical vertical section of rocking arm；
Fig. 4 shows the vertical cross section of rocking arm；
Fig. 5 shows the lower view of rocking arm, is partly splitted in support region；And
Fig. 6 shows the vertical section of the previously known valve actuating mechanism with rocking arm.
Embodiment
The well-known valve actuating mechanism 1 of the internal-combustion piston engine of Fig. 6 with reference to the accompanying drawings is arranged on shown partially
In cylinder head 2 and by cam 3, the Rocker arm 4 with roller 5, support component 6 and the air-exchanging valves 7 of the camshaft not being shown specifically
Constitute.Support component 6 is arranged in the receiving hole 8 of cylinder head 2 and via the fuel feeding of pressure medium hole 9.In addition, support component has
There is spherical end section 10, the ball-and-socket 11 of Rocker arm 4 is supported by the end section.
Rocker arm 4 can be fabricated to plate forming part, wherein the rocking arm has substantially U-shaped cross section.In rocking arm
On the end 12 of ball-and-socket 11, Rocker arm 4 is bonded on the valve stem 13 of air-exchanging valves 7.Air-exchanging valves 7 have valve retainer 14
And pre-tensioner in a closed position via valve spring 15, the valve spring is in axial direction fixed via spring-leaf retainer 16
On valve stem 13.Roller 5 is introduced into the side wall 18,19 of Rocker arm 4 via pin 17.It is fixed in order to be able to rotationally be supported on roller 5
On pin 17 in the wall of side, needle bearing 20 is used.When cam 3 rotates, roller 5 is rolled on the ring week of cam 3.
Two parallel side walls 22 and 23 being connected to each other are had according to the rocking arm 21 of the present invention, between side wall 22 and 23
Roller 24 can be rotatably supported on fulcrum post 25 in gap.Rolling bearing or sliding bearing can be used for supporting.In the embodiment
In, provided with needle bearing 26, the set-up mode of the needle bearing is shown in Fig. 3 to 5 of accompanying drawing.Needle bearing 26 surrounds branch
Consign and 25 and concentrically surrounded by roller 24.On the end regions of two axial directions of pin, pin 25 is maintained at rocking arm 21
In side wall 22 and 23.Each end regions of pin 25 are inserted in the recess 27 or 28 of corresponding side wall.
As shown in Figure 2, the recess 28 of side wall 23 has cylindrical, the profile that is open upwards with circumferential angle alpha.Equally
Ground constitutes the recess 27 of side wall 22.According to the numerical value of the angle of circumference, pin 25 is with two end regions or is regularly engaged
Insert into recess 27 and 28 or loosely in recess 27 and 28 so that the pin is radially shape-ordinatedly kept there
In side wall 22 and 23.
In order to limit the motion of pin 25 in the axial direction, each side wall 22 or 23 has the abutting region 29 outwards deformed
Or 30.The abutting region extends out and terminated in recessed from the top genesis of side wall 22 and 23 in the upper area of pin 25
On the cylindrical profile of mouth 27 and 28.Because two sides of pin 25 are interior with the abutting region 29 or 30 of side wall 22 or 23
Surface is adjacent, so abutting region limits the Axial mobility of pin.
Reference numerals list
1 valve actuating mechanism
2 cylinder head
3 cams
4 rocking arms
5 rollers
6 support components
7 air-exchanging valves
8 receiving holes
9 pressure medium holes
10 end sections
11 ball-and-sockets
12 ends
13 valve stems
14 valve retainers
15 valve spring
16 spring-leaf retainers
17 pins
18 side walls
19 side walls
20 needle bearings
21 rocking arms
22 side walls
23 side walls
24 rollers
25 fulcrum posts
26 needle bearings
27 recesses
28 recesses
29 abutting regions
30 abutting regions
α angles of circumference.
Claims (7)
1. a kind of rocking arm of valve actuating mechanism for internal combustion engine, the rocking arm is fabricated to plate forming part, and described shake
Arm has two side walls (22,23), and the two side walls have the recess (27,28) of alignment, and fulcrum post (25) is with its end regions
Insert in the recess, the fulcrum post is used for roller (24) can rotating, surrounding the fulcrum post, wherein the roller (24) is set
For for can be rollably against eccentric wheel, it is characterised in that the side wall (22,23) of the rocking arm (21) has along the pin respectively
(25) abutting region (29,30) for the side for the pin (25) that axial direction is outwards deformed.
2. a kind of rocking arm of valve actuating mechanism for internal combustion engine, the rocking arm is fabricated to plate forming part, and described shake
Arm has two side walls (22,23), and the two side walls have the recess (27,28) of alignment, and fulcrum post (25) is with its end regions
Insert in the recess, the fulcrum post is used for roller (24) can rotating, surrounding the fulcrum post, wherein the roller (24) is set
For for can be rollably against cam, it is characterised in that the side wall (22,23) of the rocking arm (21) has along the pin respectively
(25) abutting region (29,30) for the side for the pin (25) that axial direction is outwards deformed.
3. rocking arm according to claim 1 or 2, it is characterised in that the recess (27,28) of the side wall (22,23)
Profile with cylinder, being open upwards.
4. rocking arm according to claim 3, it is characterised in that the angle of circumference (α) of the profile of the recess (27,28) is more than
180 degree, wherein the pin (25) is regularly snapped in the recess (27,28) by means of its end regions.
5. rocking arm according to claim 3, it is characterised in that the angle of circumference of the profile of the recess is less than or equal to 180
Degree, wherein the pin (25) is loosely placed in the recess with its end regions.
6. rocking arm according to claim 2, it is characterised in that the abutting region (29,30) for the pin (25) is in institute
The top edge departure place composition from the side wall on side wall (22,23) is stated, the abutting region is used for institute with the roller (24)
The contact site for stating cam is adjacent.
7. rocking arm according to claim 1 or 2, it is characterised in that the abutting region (29,30) outwards deformed is with U
Shape section configuration is constituted.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011079605.3 | 2011-07-22 | ||
| DE102011079605A DE102011079605A1 (en) | 2011-07-22 | 2011-07-22 | Drag lever for the valve train of an internal combustion engine |
| PCT/EP2012/057759 WO2013013845A1 (en) | 2011-07-22 | 2012-04-27 | Rocker arm for the valve drive of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103827450A CN103827450A (en) | 2014-05-28 |
| CN103827450B true CN103827450B (en) | 2017-08-15 |
Family
ID=46017877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280035971.9A Expired - Fee Related CN103827450B (en) | 2011-07-22 | 2012-04-27 | Rocking arm for the valve actuating mechanism of internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103827450B (en) |
| DE (2) | DE102011079605A1 (en) |
| WO (1) | WO2013013845A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696037A (en) * | 2015-03-18 | 2015-06-10 | 杭州新坐标科技股份有限公司 | Low inertia high strength roller rocker |
| US10323549B2 (en) * | 2017-07-07 | 2019-06-18 | Progress Rail Locomotive Inc. | Self-aligning rocker arm and pushrod design |
| DE102017115985A1 (en) | 2017-07-17 | 2019-01-17 | Schaeffler Technologies AG & Co. KG | Method for producing a roller cam follower |
| DE102018126745A1 (en) | 2018-10-26 | 2020-04-30 | Schaeffler Technologies AG & Co. KG | Rocker arms for the valve train of reciprocating piston internal combustion engines |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825717A (en) * | 1988-09-12 | 1989-05-02 | Henley Manufacturing Corporation | Rocker arm of the cam-follower type with ribs |
| JPH04259612A (en) * | 1991-02-15 | 1992-09-16 | Ntn Corp | Rocker arm with roller |
| DE4234868C2 (en) | 1992-10-16 | 1999-10-28 | Schaeffler Waelzlager Ohg | Process for the production of a rocker arm or rocker arm |
| US6302075B1 (en) * | 2000-01-07 | 2001-10-16 | Delphi Technologies, Inc. | Roller finger follower shaft retention apparatus |
| JP2003240103A (en) * | 2002-02-20 | 2003-08-27 | Koyo Seiko Co Ltd | Cam follower |
| JP4039936B2 (en) * | 2002-11-25 | 2008-01-30 | 株式会社ジェイテクト | Rocker arm |
| US6837197B2 (en) * | 2003-03-19 | 2005-01-04 | Eaton Corporation | Dual valve lift and valve deactivation |
| JP2005188362A (en) * | 2003-12-25 | 2005-07-14 | Koyo Seiko Co Ltd | Rocker arm made of sheet metal and its manufacturing method |
| JP2005201065A (en) * | 2004-01-13 | 2005-07-28 | Koyo Seiko Co Ltd | Rocker arm |
| DE102005037053A1 (en) * | 2005-08-05 | 2007-02-08 | Schaeffler Kg | Switchable drag lever of a valve train of an internal combustion engine |
| JP2008115818A (en) * | 2006-11-07 | 2008-05-22 | Otics Corp | Rocker arm |
-
2011
- 2011-07-22 DE DE102011079605A patent/DE102011079605A1/en not_active Withdrawn
-
2012
- 2012-04-27 WO PCT/EP2012/057759 patent/WO2013013845A1/en active Application Filing
- 2012-04-27 DE DE112012003085.0T patent/DE112012003085A5/en not_active Withdrawn
- 2012-04-27 CN CN201280035971.9A patent/CN103827450B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE112012003085A5 (en) | 2014-07-10 |
| CN103827450A (en) | 2014-05-28 |
| WO2013013845A1 (en) | 2013-01-31 |
| DE102011079605A1 (en) | 2013-01-24 |
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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 |
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| 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: |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 |
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| CF01 | Termination of patent right due to non-payment of annual fee |