CN105443183B - A kind of valve rocker component of motorcycle engine - Google Patents
A kind of valve rocker component of motorcycle engine Download PDFInfo
- Publication number
- CN105443183B CN105443183B CN201510891787.XA CN201510891787A CN105443183B CN 105443183 B CN105443183 B CN 105443183B CN 201510891787 A CN201510891787 A CN 201510891787A CN 105443183 B CN105443183 B CN 105443183B
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- Prior art keywords
- rocking arm
- torsional spring
- cylinder head
- valve
- motorcycle engine
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Abstract
The invention discloses a kind of valve rocker components of motorcycle engine, apply the torsional spring of pretightning force including the rocking arm being assemblied on cylinder head rocker arm shaft and to rocking arm, the rocking arm has the cam end and valve end for being located at cylinder head rocker arm shaft both sides, the torsional spring includes a spiral section and two free ends, a wherein free end is the rocking arm end for applying pretightning force to the rocking arm, another free end is positive stop end, limit fixed part is provided on the rocking arm, the rocking arm end of the torsional spring is limited by the limit fixed part and is fixed, rocking arm end provides a downward pretightning force to the valve end of the rocking arm.The configuration of the present invention is simple is compact, and torsional spring installation accuracy is high, can control windup-degree of the torsional spring in installation and work well, improves torsional spring sound-damping effect.
Description
Technical field
The present invention relates to motorcycle, the specifically valve rocker component of motorcycle engine.
Background technology
As shown in Fig. 1 ~ Fig. 2, at work, the operating temperature of cylinder head is high for motorcycle engine, in order to ensure to send out
Motivation can work normally under various operating modes, and the thermal expansion amount to tappet 1A is needed to compensate, i.e., it can reserve 0.06 ~
The valve clearance of 0.12mm, but because valve clearance presence, engine at work, above and below drivings of the tappet 1A through cam 5A
In reciprocatory movement quickly because of its movement velocity, the top of tappet 1A will produce bounce so that the top of tappet 1A and rocking arm
The adjusting nut 3A on 2A valves top will produce impact noise in the moment of contact, for this purpose, using in the prior art in rocking arm 2A
Rocking arm flange 21A on a torsional spring 4A is installed, a free end of torsional spring 4A is ganged up with is located at valve end side in rocking arm（It is commonly called as long-armed
Side）Back, the elasticity to provide downward torsional spring 4A supports power so that the valve end of rocking arm 2A always in cylinder head very
Bar 1A is abutted, and is reached the variation of valve clearance of the automatic compensation caused by temperature change, is effectively avoided the temperature of cylinder interior
Degree drop causes the adjusting nut 3A in rocking arm 2A valve ends to tap abnormal sound caused by tappet 1A.
However, due to a free end of torsional spring（Rocking arm end）It is the back ganged up in long-armed side so that torsional spring rocking arm end
Multiple directions degree of freedom is not to be restricted, and rocking arm end will produce larger displacement when torsional spring stress, adds torsional spring itself
The deformation when presence of foozle and torsional spring stress, the windup-degree deviation of torsional spring is larger when this will result in installation, from
And the effect that torsional spring installation will be influenced, finally influence whether that engine sends out the eradicating efficacy of noise in the process of running.
Also, since rocking arm is located at the brachium tolerance and rocking arm back convex ribs of valve end side（To forge shape, size
Error is big, inaccurate）Influence, above-mentioned abnormal sound eradicating efficacy can be aggravated.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of valve rocker component of motorcycle engine,
Simple and compact for structure, torsional spring installation accuracy is high, can control windup-degree of the torsional spring in installation and work well, improves torsional spring
Erasure effect.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of valve rocker component of motorcycle engine, including the rocking arm that is assemblied on cylinder head rocker arm shaft and to shaking
Arm applies the torsional spring of pretightning force, and the rocking arm has the cam end and valve end for being located at cylinder head rocker arm shaft both sides,
The torsional spring includes a spiral section and two free ends, wherein a free end is the rocking arm end for applying pretightning force to the rocking arm, separately
One free end is positive stop end, is provided with limit fixed part on the rocking arm, the rocking arm end of the torsional spring is by the limit fixed part
Limit is fixed, and rocking arm end provides a downward pretightning force to the valve end of the rocking arm.
As an improvement of the above technical solution, the limit fixed part is mounting hole or card slot.
As a further improvement of the above technical scheme, the mounting hole or card slot are obtained by drilling machine or Boring machine processing.
Preferably, the idler wheel contacted with cam engagement is installed, the idler wheel passes through axis pin in the cam end of the rocking arm
It is hinged on the rocking arm, there is pin hole, the pin hole to constitute the limit fixed part on the axis pin
Further, the spiral section of the torsional spring and the connection transition location at rocking arm end are provided with the resigning breach of indent.
Further, the cylinder head rocker arm shaft is bolted by rocker arm shaft is fixed on the cylinder head, the torsional spring
Positive stop end by the rocking arm axle bolt limit fix.
Preferably, the positive stop end of the torsional spring has a hook part, is provided with and the hook part phase on the rocking arm axle bolt
The annular groove of adaptation, the hook part are ganged up in the annular groove, the fixed institute of cooperation limit that rocking arm axle bolt passes through annular groove and hook part
State the positive stop end of torsional spring.
The cylinder head rocker arm shaft is provided with rocking arm flange, rocking arm flange and the cylinder head rocking arm on the rocking arm
Axis is coaxially disposed, and the spiral section unilateral side of the torsional spring is nested on the rocking arm flange.Or the spiral section of the torsional spring is unilateral
It is nested on the cylinder head rocker arm shaft.
The beneficial effects of the invention are as follows：The present invention using the above structure, by being provided with limit fixed part on rocking arm,
The rocking arm end of torsional spring is limited by the limit fixed part and is fixed, and has been abandoned in traditional technology and has been ganged up at the rocking arm end of torsional spring in rocking arm
Positioned at valve end side（It is commonly called as long-armed side）The frame mode at back so that the multiple directions degree of freedom at torsional spring rocking arm end is limited
System, avoids rocking arm end when torsional spring stress from generating larger displacement, can be good at controlling windup-degree when torsional spring installation, to
The torsion that can be good at controlling torsional spring, improves the erasure effect of torsional spring well.
In particular, when limit fixed part is pin hole, the high-precision dimensional structure of existing pin hole, energy can be adequately utilized
Windup-degree when enough preferably control torsional spring installations preferably improves torsional spring so as to preferably control the torsion of torsional spring
Erasure effect.
The configuration of the present invention is simple is compact, and implementation cost is cheap, and it is good to eliminate noise result.
Description of the drawings
Fig. 1 is the schematic view of the mounting position of valve rocker component and tappet etc. in the prior art；
Fig. 2, Fig. 4 are the structural schematic diagrams of valve rocker component in the prior art；
Fig. 3 is assembling schematic diagram of the valve rocker component in cylinder head in the prior art；
Fig. 5 is the mounting structure schematic diagram of the present invention；
Fig. 6 is the partial sectional view of Fig. 5；
Fig. 7 is the dimensional structure diagram of torsional spring in the present invention；
Fig. 8 is the sectional view of rocking arm axle bolt in the present invention；
Fig. 9 is the assembling schematic diagram of torsional spring and rocking arm in the present invention；
Figure 10 is the stereogram of Fig. 9；
Figure 11 ~ 12 are the structural schematic diagrams limited when fixed part is separately positioned on valve end and cam end.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.
With reference to Fig. 5 ~ Figure 12, a kind of valve rocker component of motorcycle engine of the invention, including it is assemblied in cylinder head
Rocker arm shaft（It is not painted）On rocking arm 1 and apply the torsional spring 2 of pretightning force to rocking arm 1, the rocking arm 1 have be located at it is described
Cam end 11 at left and right sides of cylinder head rocker arm shaft and valve end 12, in known techniques, valve end 12 is equipped with adjusting nut 3A
（Referring to Fig. 1）, adjusting nut 3A is for adjusting rocking arm 1 with the gap between tappet, it is ensured that rocking arm energy accurate transfer cam contour
Lift variation, with correctly control oil gas enter combustion chamber of air cylinder and promote engine operating and and then by exhaust gas discharge just
When act, complete in due course into, pressure, quick-fried, row actuating travel, wherein left and right directions is signified referring to arrow in attached drawing 9；The torsional spring
2 include a spiral section 21 and two free ends, wherein a free end is the rocking arm end 22 for applying pretightning force to the rocking arm 1, it is another
Free end is positive stop end 23, limit fixed part 14 is provided on the rocking arm 1, the rocking arm end 22 of the torsional spring 1 is by the limit
The limit of fixed part 14 is fixed, and rocking arm end 22 provides a downward pretightning force to the valve end 12 of the rocking arm 1.
The limit fixed part 14 can be mounting hole either card slot, and limit fixed part 14 can be arranged in valve end
On 12, as shown in figure 11, it can also be arranged in cam end 11, as shown in figure 12, as long as the valve end 12 of rocking arm 1 can be given to provide
One downward pretightning force.
Preferably, the mounting hole or card slot are obtained by drilling machine or Boring machine processing, are obtained by drilling machine or Boring machine processing
Mounting hole or card slot dimensional accuracy it is high, the brachium tolerance that rocking arm in traditional technology is located at valve end side can be eliminated well
And rocking arm back convex ribs（To forge shape, scale error is big, inaccurate）The influence brought.
In the present embodiment, be to reduce friction energy loss and frictional noise, be equipped in the cam end of the rocking arm 1 with
The idler wheel 3 of cam engagement contact, the idler wheel 3 are hinged on by axis pin 4 on the rocking arm 1, have pin hole on the axis pin 4
41, which constitutes the limit fixed part.This can adequately utilize the high-precision dimensional structure of existing pin hole, can
The preferably windup-degree when installation of control torsional spring preferably improves torsional spring so as to preferably control the torsion of torsional spring
Erasure effect.
In the present embodiment, it is inserted into the limit fixed part for ease of the rocking arm end 22 of torsional spring 2, the spiral shell of the torsional spring 2
The junction for revolving section 21 and rocking arm end 22 is connection transition location, it is preferred that the connection transition location is provided with allowing for indent
Position notch 24, the setting of resigning breach 24 can effectively avoid contact wear between rocking arm end 22 and rocking arm 1, to be conducive to
Improve the reliability of torsional spring.
In known techniques, the positive stop end 23 of torsional spring 2 is generally connected and fixed with cylinder head, the preferred implementation as the present invention
Example, the cylinder head rocker arm shaft are fastened on by rocking arm axle bolt 5 on the cylinder head, the positive stop end 23 of the torsional spring 2
It is limited and is fixed by the rocking arm axle bolt 5.The knot for being directly connected and fixed positive stop end 23 with cylinder head in compared with the prior art
Structure, the present embodiment can adequately utilize the size of rocking arm axle bolt 5 degree of precision, preferably control torsional spring 2 when mounted
Windup-degree, to preferably control the torsion of torsional spring.
At work, rocking arm 1 is reciprocally swinging to the valve rocker component of engine so that torsional spring 2 is by discontinuity
Twisting, i.e. two free ends of torsional spring it is reciprocal draw close and it is separate, when two free ends of torsional spring are drawn close, the rocking arm end 22 of torsional spring 2
The power along torsional spring axial direction can be generated to rocking arm 1, axial direction of the power by rocking arm 1 along rocker arm shaft pushes away torsional spring, when the two of torsional spring
Free end far from when, the axial force that torsional spring 2 applies rocking arm 1 disappears, and rocking arm 1 is resetted towards torsional spring displacement, which results in
In engine working process, rocking arm 1 is continuous shift reciprocately along the axial direction of cylinder head rocker arm shaft so that rocking arm 1 and gas
It constantly hits and makes a noise between cylinder head, for this purpose, in the present embodiment, it is preferred that the positive stop end of the torsional spring 2 has one to hook
Portion 25 is provided with annular groove 51 compatible with the hook part 25 on the rocking arm axle bolt 5, and the hook part 25 is ganged up in the ring
In slot 51, rocking arm axle bolt 5 fixes the positive stop end 23 of the torsional spring 2 by the cooperation limit of annular groove 51 and hook part 25, passes through hook
The cooperation in portion 25 and annular groove 51 limits the axial position of the installation of torsional spring 2 so that torsional spring is compressed axially, and rocking arm 1 is pushed to cylinder
The side of head has greatly been reduced or eliminated to eliminate the influence of axial gap between rocking arm and cylinder head because of rocker arm shaft
The noise brought to shift reciprocately.
In the above-described embodiments, the following two kinds mode may be used in the mounting structure of torsional spring 2：
The cylinder head rocker arm shaft is provided with rocking arm flange 13, rocking arm flange 13 and the cylinder on the rocking arm 1
Head tremor arm axle is coaxially disposed, and 21 unilateral side of spiral section of the torsional spring 2 is nested on the rocking arm flange 13；Or the torsional spring 2
21 unilateral side of spiral section be nested on the cylinder head rocker arm shaft.
The present invention using the above structure, by the way that the rocking arm end 22 of torsional spring 2 is inserted into the axis hole, the rocking arm of torsional spring 2
End 22 provides a upward pretightning force to the cam end 11 of the rocking arm 1, has abandoned the free end by torsional spring in traditional technology
Gang up with and is located at valve end side in rocking arm（It is commonly called as long-armed side）Back, to provide the structure side that downward torsional spring elasticity supports power
The high-precision dimensional structure of existing rocker shaft hole is adequately utilized in formula, the present invention, when can be good at controlling torsional spring installation
Windup-degree, so as to control the torsion of torsional spring well, simple and compact for structure, implementation cost is cheap, well improve
The erasure effect of torsional spring.
The above, only better embodiment of the invention, but the present invention is not limited to above-described embodiments, as long as its with
Any same or similar means reach the technique effect of the present invention, should all fall under the scope of the present invention.
Claims (8)
1. a kind of valve rocker component of motorcycle engine, including the rocking arm that is assemblied on cylinder head rocker arm shaft and to rocking arm
Apply the torsional spring of pretightning force, the rocking arm has the cam end and valve end for being located at cylinder head rocker arm shaft both sides, institute
It includes a spiral section and two free ends to state torsional spring, wherein a free end is the rocking arm end for applying pretightning force to the rocking arm, it is another
Free end is positive stop end, it is characterised in that：Limit fixed part is provided on the rocking arm, the rocking arm end of the torsional spring is by the limit
Position fixed part limit is fixed, and rocking arm end provides a downward pretightning force to the valve end of the rocking arm；The cylinder head rocker arm shaft
It is bolted and is fixed on the cylinder head by rocker arm shaft, the positive stop end of the torsional spring is limited admittedly by the rocking arm axle bolt
It is fixed.
2. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：The limit is solid
It is mounting hole or card slot to determine portion.
3. a kind of valve rocker component of motorcycle engine according to claim 2, it is characterised in that：The mounting hole
Or card slot is obtained by drilling machine or Boring machine processing.
4. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：The rocking arm
The idler wheel contacted with cam engagement is installed, the idler wheel is hinged on by axis pin on the rocking arm, the axis pin in cam end
It is upper that there is pin hole, the pin hole to constitute the limit fixed part.
5. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：The torsional spring
Spiral section and the connection transition location at rocking arm end are provided with the resigning breach of indent.
6. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：The torsional spring
Positive stop end has a hook part, is provided with annular groove compatible with the hook part on the rocking arm axle bolt, the hook part gang up in
In the annular groove, rocking arm axle bolt passes through annular groove and the cooperation of hook part limits the positive stop end for fixing the torsional spring.
7. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：On the rocking arm
The cylinder head rocker arm shaft is provided with rocking arm flange, rocking arm flange is coaxially disposed with the cylinder head rocker arm shaft, the torsion
The spiral section unilateral side of spring is nested on the rocking arm flange.
8. a kind of valve rocker component of motorcycle engine according to claim 1, it is characterised in that：The torsional spring
Spiral section unilateral side is nested on the cylinder head rocker arm shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891787.XA CN105443183B (en) | 2015-12-04 | 2015-12-04 | A kind of valve rocker component of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891787.XA CN105443183B (en) | 2015-12-04 | 2015-12-04 | A kind of valve rocker component of motorcycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105443183A CN105443183A (en) | 2016-03-30 |
| CN105443183B true CN105443183B (en) | 2018-09-11 |
Family
ID=55553760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510891787.XA Active CN105443183B (en) | 2015-12-04 | 2015-12-04 | A kind of valve rocker component of motorcycle engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN105443183B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3203791A1 (en) * | 1982-02-04 | 1983-08-11 | Volkswagenwerk Ag, 3180 Wolfsburg | VALVE DRIVE, ESPECIALLY FOR A MOTOR VEHICLE INTERNAL COMBUSTION ENGINE |
| CN2527713Y (en) * | 2002-03-25 | 2002-12-25 | 重庆宗申技术开发研究有限公司 | Rocking arm torsional spring device for motorcycle engine |
| DE10326238A1 (en) * | 2002-12-24 | 2005-02-03 | Levon Grigorjan | Fully variable combustion engine valve controller has transfer lever with torsion spring pivotably mounted about lever axle and fitted in valve drive with bias, ensuring permanent play-free contact |
| CN100427728C (en) * | 2004-01-16 | 2008-10-22 | 本田技研工业株式会社 | Valve operating device for engine |
| JP4519104B2 (en) * | 2006-06-01 | 2010-08-04 | 日立オートモティブシステムズ株式会社 | Variable valve operating device for internal combustion engine |
| JP5355296B2 (en) * | 2009-08-18 | 2013-11-27 | 株式会社オティックス | Rocker arm unit |
| CN103061838B (en) * | 2012-12-18 | 2015-09-09 | 江门市大长江集团有限公司 | Motorcycle engine low noise airvalve swing arm module |
| CN205225354U (en) * | 2015-12-04 | 2016-05-11 | 江门市大长江集团有限公司 | Valve rocker subassembly of motorcycle engine |
-
2015
- 2015-12-04 CN CN201510891787.XA patent/CN105443183B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105443183A (en) | 2016-03-30 |
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