CN2809225Y - Rocker and push rod combination on motorcycle engine - Google Patents
Rocker and push rod combination on motorcycle engine Download PDFInfo
- Publication number
- CN2809225Y CN2809225Y CN 200520009662 CN200520009662U CN2809225Y CN 2809225 Y CN2809225 Y CN 2809225Y CN 200520009662 CN200520009662 CN 200520009662 CN 200520009662 U CN200520009662 U CN 200520009662U CN 2809225 Y CN2809225 Y CN 2809225Y
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- push rod
- upper rocker
- bulb
- plunger
- 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
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model relates to the combination of an upper rocker arm and a push rod of a motorcycle engine. The utility model comprises the upper rocker arm and the push rod, wherein the ball head end of the push rod is positioned in a ball head hole seat of the upper rocker arm, an installing hole is arranged in the ball head hole seat of the upper rocker arm, a compression spring and a plunger are arranged in the installing hole, and the plunger which is positioned between the compression spring and a ball head of the push rod is in clearance fit with the installing hole. The combination of the upper rocker arm and the push rod reduces noise generated by shocking between the push rod and the upper rocker arm, and between a regulating screw of the upper rocker arm and a valve rod.
Description
Technical field
The utility model relates to the parts of lower arranging cam axle type motorcycle engine distribution device, is specifically related to the upper rocker arm push rod combination in the distribution device.
Technical background
Lower arranging cam axle type motorcycle engine distribution device comprises camshaft, lower shake-changing arm, push rod, upper rocker arm and valve assembly, one bulb end of push rod is positioned at the bulb hole seat of upper rocker arm, there is bigger gap with bulb hole seat, when push rod pushes the upper rocker arm rotation under lower shake-changing arm promotes, this gap will cause push rod and upper rocker arm that bump takes place and produce noise.On the other hand, because valve is different with the material of engine cylinder-body, the degree varies of expanding with heat and contract with cold of valve and engine cylinder-body is caused, when engine operation, the thermal expansion of valve causes valve-closing not tight greater than the thermal expansion of cylinder body easily, so when installation, leave certain interval between the adjusting screw of upper rocker arm one end and the valve actuating push rod, and this gap also can cause the generation of noise when engine operation.
The model utility content
Technical problem to be solved in the utility model provides a kind of motorcycle engine upper rocker arm push rod combination, between reduction push rod and upper rocker arm, and the noise that bump produces between upper rocker arm adjusting screw and the valve stem.
Motorcycle engine upper rocker arm push rod combination described in the utility model, comprise upper rocker arm and push rod, push rod bulb end is positioned at the bulb hole seat of upper rocker arm, upper rocker arm is provided with pan, in the seat of upper rocker arm bulb hole, offer mounting hole, pressure spring and plunger are installed in the mounting hole, plunger between pressure spring and push rod bulb with the mounting hole Spielpassung.
Described mounting hole is the step hole step that is communicated with pan in order to against pressure spring, and mounting hole is communicated with pan and is beneficial to the formation oil passage.
Plunger contacts end face with the push rod bulb be arc surface, to increase the area of contact of plunger and push rod bulb, reduces the wearing and tearing of push rod bulb.
Plunger and pressure spring contact jaw are along circumferentially offering annular groove, and pressure spring one end is fastened in the groove, pressure spring and plunger are connected as a single entity and do not come off, and are convenient to assemble.
Offer oilhole at the upper rocker arm end face and be communicated with, fill in capable effectively lubricating with coupled columns with seat top, upper rocker arm bulb hole.
The utility model is owing to have this kind structure, plunger keeps in touch with the push rod bulb under the pressure spring effect all the time, and under the effect of plunger, also make push rod bulb and upper rocker arm bulb hole seat inwall remain contact condition, like this, when push rod upwards pushed upper rocker arm, the push rod bulb just can not produce violent bump with upper rocker arm bulb hole seat, so greatly reduced the noise between push rod and the upper rocker arm.
On the other hand, because plunger produces an extruding force to the push rod bulb all the time under the pressure spring effect, when installation, just can make like this can remain between upper rocker arm adjusting screw and the valve stem to contact and do not stay the gap.Because when the valve stem expanded by heating is out of shape,, thereby, dissolving the amount of deformation of valve stem, and can not make valve-closing not tight for upper rocker arm provides certain slewing area because the compressible plunger of push rod bulb moves a distance.Just because of can making, the utility model do not stay the gap between upper rocker arm adjusting screw and the valve stem when motor is installed, the upper rocker arm adjusting screw is remained with valve stem to be contacted, so just avoided the bump between upper rocker arm adjusting screw and the valve stem to produce, thereby eliminated basically between upper rocker arm adjusting screw and the valve stem because the noise that bump produces.
Description of drawings
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is the structural representation of motorcycle engine upper rocker arm push rod combination described in the utility model;
Fig. 2 is the sectional view of upper rocker arm in this upper rocker arm push rod combination;
Fig. 3 is the plan view of plunger;
Fig. 4 is combined in valve sectional view when being in closed condition for this upper rocker arm push rod;
Fig. 5 is combined in valve sectional view when being in opening state for this upper rocker arm push rod.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, this motorcycle engine upper rocker arm push rod combination comprises upper rocker arm 11 and push rod 5, push rod bulb 6 ends are positioned at the bulb hole seat 8 of upper rocker arm 11, and upper rocker arm 11 is provided with pan 1, by this pan 1 usefulness one bearing pin upper rocker arm 11 are installed on the cylinder head.Offer mounting hole 7 in upper rocker arm bulb hole seat 8, this mounting hole 7 is the step hole that is communicated with pan 1.Pressure spring 2 and plunger 3 are installed in the mounting hole 7, plunger 3 between pressure spring 2 and push rod bulb 6 with mounting hole 8 Spielpassung.
Plunger 3 contacts end face 10 and is arc surface with push rod bulb 6, to increase the area of contact of plunger 3 and push rod bulb 6, reduce the wearing and tearing of push rod bulb 6.Plunger 3 circumferentially offers annular groove 9 with pressure spring 2 contact jaws edge.Pressure spring 2 one ends are resisted against the step end face of mounting hole 7, and the other end is fastened in the groove 9, and pressure spring 2 and plunger 3 are connected as a single entity and unlikely coming off, and are beneficial to assembling.Mounting hole 7 is communicated with pan 1 and is beneficial to the formation oil passage, makes component be able to proper lubrication.Offer oilhole 4 at upper rocker arm 11 end faces and be communicated with, so that plunger 3 is carried out effectively lubricating with seat 8 tops, upper rocker arm bulb hole.
Claims (5)
1, motorcycle engine upper rocker arm push rod combination, comprise upper rocker arm (11) and push rod (5), push rod bulb (6) end is positioned at the bulb hole seat (8) of upper rocker arm, upper rocker arm is provided with pan (1), it is characterized in that: in upper rocker arm bulb hole seat (8), offer mounting hole (7), pressure spring (2) and plunger (3) are installed in the mounting hole, and plunger is positioned between pressure spring and the push rod bulb (6) and the mounting hole Spielpassung.
2, motorcycle engine upper rocker arm push rod combination according to claim 1 is characterized in that: the step hole of described mounting hole (7) for being communicated with pan (1).
3, motorcycle engine upper rocker arm push rod combination according to claim 1, it is characterized in that: plunger (3) contacts end face (10) with push rod bulb (6) be arc surface.
4, motorcycle engine upper rocker arm push rod combination according to claim 1 is characterized in that: plunger (3) circumferentially offers annular groove (9) with pressure spring (2) contact jaw edge, and pressure spring one end is fastened in the groove.
5, according to any described motorcycle engine upper rocker arm push rod combination in the claim 1 to 4, it is characterized in that: offer oilhole (4) at upper rocker arm (11) end face and be communicated with upper rocker arm bulb hole seat (8) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009662 CN2809225Y (en) | 2005-07-24 | 2005-07-24 | Rocker and push rod combination on motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009662 CN2809225Y (en) | 2005-07-24 | 2005-07-24 | Rocker and push rod combination on motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2809225Y true CN2809225Y (en) | 2006-08-23 |
Family
ID=36925409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520009662 Expired - Fee Related CN2809225Y (en) | 2005-07-24 | 2005-07-24 | Rocker and push rod combination on motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2809225Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179510A (en) * | 2015-09-29 | 2015-12-23 | 陕西法士特汽车传动集团有限责任公司 | Self-locking mechanism of synchronizer |
-
2005
- 2005-07-24 CN CN 200520009662 patent/CN2809225Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179510A (en) * | 2015-09-29 | 2015-12-23 | 陕西法士特汽车传动集团有限责任公司 | Self-locking mechanism of synchronizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING ZONGSHEN ENGINE MANUFACTURING CO. Free format text: FORMER OWNER: CHONGQING ZONGSHEN TECHNOLOGY DEVELOPMENT + RESEARCH CO., LTD. Effective date: 20071228 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071228 Address after: Shen Shen industrial park, Banan District, Chongqing, China: 400054 Patentee after: Chongqing Zongshen Engine Manufacturing Co., Ltd. Address before: No. 25 Erlang Road, Chongqing hi tech Development Zone, Shiqiaopu, 400039 Patentee before: Chongqing Zongshen Technology Development & Research Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060823 Termination date: 20140724 |
|
| EXPY | Termination of patent right or utility model |