CN202451225U - Elastic buffering ejector rod for internal combustion engine - Google Patents
Elastic buffering ejector rod for internal combustion engine Download PDFInfo
- Publication number
- CN202451225U CN202451225U CN2012200902878U CN201220090287U CN202451225U CN 202451225 U CN202451225 U CN 202451225U CN 2012200902878 U CN2012200902878 U CN 2012200902878U CN 201220090287 U CN201220090287 U CN 201220090287U CN 202451225 U CN202451225 U CN 202451225U
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- combustion engine
- push rod
- internal combustion
- bulb
- spring
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Abstract
The utility model discloses an elastic buffering ejector rod for an internal combustion engine. The elastic buffering ejector rod for the internal combustion engine comprises an ejector rod body, and a first ball head and a second ball head which are arranged at the two ends of the ejector rod body, and is characterized by further comprising a ball head base, wherein the ball head base is fixed with the first ball head; the ball head base is connected with the ejector rod body through a sleeve; a spring is arranged inside the sleeve; the spring is positioned between the ball head base and the ejector rod body; and the spring can be compressed by pressing the ball head. The elastic buffering ejector rod for the internal combustion engine is simple in structure, convenient to manufacture and low in cost; the elastic buffering ejector rod for the internal combustion engine can fundamentally solve the problem of noise increase due to a valve clearance and a clearance change after a heat distortion in the running process of the internal combustion engine and effectively reduces noises, thus prolonging the service life of the internal combustion engine and improving the quality of the internal combustion engine; therefore, the elastic buffering ejector rod for the internal combustion engine is particularly applicable to field of the internal combustion engines for motorcycles and automobiles.
Description
Technical field
The utility model relates to cylinder head of internal combustion engine (cylinder head) accessory, relates in particular to a kind of automobile that can effectively reduce noise and motorcycle IC engine cylinder head (cylinder head) with elastic buffer formula push rod.
Background technique
As everyone knows, internal-combustion engine is the core part part of dynamic power machine, and the quality of its performance is concerning the quality of dynamic power machine complete machine, and the noise of internal-combustion engine is one of important indicator of weighing engine performance.Discover that the noise that produces during internal combustion engine operation is mainly derived from cylinder head (cylinder head) part, especially cylinder head (cylinder head) rocking arm when work, rocking arm and push rod and certain clearance is arranged with the valve stem termination collide it each other and produce noise.
Cylinder head of internal combustion engine (cylinder head) is mainly by the upper rocker arm on cylinder head (cylinder head) matrix, the matrix and push rod between lower shake-changing arm, upper rocker arm and the lower shake-changing arm and valve stem formation.Termination at upper rocker arm is equipped with valve lash adjusting screw, and this adjusting screw is fixed through screw thread and upper rocker arm.The two ends of push rod have with upper rocker arm and lower shake-changing arm on the bulb that is complementary of ball recess; The upper end of said push rod contacts with upper rocker arm, and the lower end contacts with lower shake-changing arm, and lower shake-changing arm contacts with cam; Behind engine starting, cam rotation drives the motion of lower shake-changing arm, push rod, upper rocker arm etc.Have gas-entered passageway and exhaust passage on the said matrix, gas-entered passageway and bottom, exhaust passage have valve seat, and said valve stem passes valve seat and gas-entered passageway and exhaust passage from the bottom up; Its upper end contacts with adjusting screw, and adjusting screw and valve stem are stressed on same axis, like this; Motion drive adjusting screw through upper rocker arm presses down valve stem; Valve stem is moved up and down, thereby make the inlet and outlet door of internal-combustion engine replace opening and closing, guarantee the proper functioning of internal-combustion engine.
But on the motorcycle IC engine that assembles, can there be the gap about 0.03-0.05mm all the time between adjusting screw and the valve stem upper end; And during internal combustion engine operation, along with the lengthening of internal-combustion engine run duration, the temperature of each component raises gradually in the internal-combustion engine.Because the material aluminum alloy of cylinder head (cylinder head) matrix that generally uses, the material of upper rocker arm are aluminum alloy or steel part as the material of steel part, push rod; Be in operation; Different expansion coefficient occurs owing to material is different, the physical property of material differs greatly, cause upper rocker arm and push rod and and upper rocker arm adjusting screw and the gap between the valve stem fixed increasing; Thereby when internal combustion engine operation, produce strong Strike note; This not only makes noise parameter exceed standard easily, more can make this position wearing and tearing aggravation, shortens internal-combustion engine life-span.
Although people have adopted a lot of methods to reduce generation of noise; But in the existing technology; What effect was best is exactly the material that changes cylinder head (cylinder head) matrix, upper rocker arm and push rod etc.; Make its expansion coefficient approaching, but so not only make cost of production improve (need research and development and make new manufactured materials), and can not address this problem well.
The model utility content
Above-mentioned deficiency to the existing technology existence; The purpose of the utility model just is to provide a kind of internal-combustion engine with elastic buffer formula push rod; Can solve internal-combustion engine produces noise in running problem effectively, thereby prolong service life of engine, improve the quality of complete machine.
To achieve these goals; The technological scheme that the utility model adopts is such: a kind of cylinder head of internal combustion engine (cylinder head) is with elastic buffer formula push rod; Comprise push rod body and first bulb and second bulb of being located at push rod body two ends; It is characterized in that: also comprise a bulb base, the said bulb base and first bulb are fixed, and this bulb base links to each other with the push rod body through sleeve; In sleeve, be provided with a spring, said spring two bulb bases and between, and can said spring position be compressed through pushing first bulb.
Push rod is arranged to two-part, through sleeve two-part is linked to each other then, and in sleeve, add spring, so original rigidity push rod is changed to the push rod with certain flexible ability.When push rod being assembled between upper rocker arm and the lower shake-changing arm, push bulb through external force (being generally artificial), thus pressure spring; Because spring after being compressed deformation can take place, and is cancelling under the situation of external force, spring can reset; At this moment, spring backs down the bulb base, makes the length of whole push rod elongated; Thereby the promotion upper rocker arm makes with fixing adjusting screw and the valve stem termination of upper rocker arm and fits tightly (can not have the gap basically); Behind internal combustion engine; After deformation takes place in cylinder head matrix, upper rocker arm, lower shake-changing arm and push rod etc.; Gap between push rod and the upper rocker arm can be further elongated because of the length that resetting rapidly of spring makes push rod; Thereby push rod and upper rocker arm are fitted tightly all the time; And also fit tightly between adjusting screw that the promotion upper rocker arm makes and upper rocker arm is fixing and the valve stem termination, in the working procedure of entire internal combustion engine, the gap between upper rocker arm and push rod and adjusting screw and the valve stem termination can be by elimination rapidly like this; Avoid in the internal combustion engine process upper rocker arm vibration that bumps of partly working, thereby eliminated the noise that internal-combustion engine produces in the course of the work effectively.
Further, on the sidewall of sleeve, also offer an exhaust port at least.Be used for when assembling, discharging the air in the sleeve in the process of pressure spring, be more convenient for installing.
As preferably, a side and first bulb of said bulb base are fixed, and opposite side is provided with the column step, and this column step and sleeve Spielpassung are to play the axially locating effect; Said bulb base cooperates with sleeve through this column step and links to each other with the push rod body; Also be provided with the spring positioning shaft at the column step away from an end of bulb base, cooperate with spring inside diameter to play the role of positioning, an end of said spring is sheathed and be fixed on this spring positioning shaft.
As preferably, said bulb base is column, and with the sleeve Spielpassung, to play the axially locating effect; Structure is simpler.One end and first bulb of said bulb base are fixed, and the other end is provided with the spring positioning shaft, and an end of said spring is sheathed and be fixed on this spring positioning shaft.Make spring in the process of compressing and resetting, move better effects if along the axial direction of push rod body all the time.
Further, said sleeve is fixedly connected through screw thread with the push rod body.Through screw-thread fit sleeve is linked to each other with the push rod body, simple in structure, easy to process, assembling easily.
Further, said sleeve and this body by integral forming of push rod.Make sleeve and push rod body structure more stable, and production and processing is convenient.
Further, the one-body molded or welding one of said first bulb and bulb base.Make structure more stable.
Compared with prior art, the advantage of the utility model is: simple in structure, easy to process, with low cost, can fundamentally solve the big problem of internal-combustion engine noise in running, and effectively abate the noise, thereby prolong internal-combustion engine life-span, improve the motorcycle quality.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of upper ejector pin.
Embodiment
To combine accompanying drawing and embodiment that the utility model is described further below.
Embodiment: referring to Fig. 1, Fig. 2; A kind of cylinder head of internal combustion engine (cylinder head) is with elastic buffer formula push rod; Comprise push rod body 1 and first bulb 21 and second bulb 22 of being located at push rod body 1 two ends, also comprise a bulb base 3, the said bulb base 3 and first bulb 21 are fixing; This first bulb 21 and bulb base 3 one-body molded or welding one make structure more stable.Said bulb base 3 links to each other with push rod body 1 through sleeve 4; In sleeve 4, be provided with a spring 5, said spring 5 and can be with 5 compressions of said spring through pushing first bulb 21 between bulb base 3 and push rod body 1.
Said sleeve 4 and push rod body 1 are fixedly connected through screw thread.Through screw-thread fit sleeve is linked to each other with the push rod body, simple in structure, easy to process, assembling easily.On the sidewall of sleeve, also offer an exhaust port 6 at least.Be used for when assembling, discharging the air in the sleeve in the process of pressure spring, be more convenient for installing.
As a kind of mode of execution, a side of said bulb base 3 and first bulb 21 are fixing, and opposite side is provided with column step 7, this column step 7 and sleeve 4 Spielpassung; Said bulb base 3 cooperates with sleeve 4 through this column step 7 and links to each other with push rod body 1.This bulb base can be made into arbitrary shape, processes conveniently, and this column step can be one-body molded with the bulb base, also can be through being welded as a whole.Also be provided with spring positioning shaft 8 at the column step away from an end of bulb base, an end of said spring is sheathed and be fixed on this spring positioning shaft, makes spring in compression and the process that resets, move better effects if along the axial direction of push rod body all the time.
Embodiment 2, and different with embodiment 1 is said sleeve and this body by integral forming of push rod.During actual the manufacturing, sleeve and push rod body are one through machine shaping, also can make sleeve and push rod main body structure more stable through being welded as a whole, and processing is more prone to.Said bulb base is column, and with the sleeve Spielpassung; Structure is simpler.One end and first bulb of said bulb base are fixed; The other end is provided with the spring positioning shaft; One end of said spring is sheathed and be fixed on this spring positioning shaft, makes spring in compression and the process that resets, move better effects if along the axial direction of push rod body all the time.
Embodiment 3; Referring to Fig. 2; Different with embodiment 1 and 2 is that said sleeve is made up of to the blind hole with certain depth that the other end is drilled with from its end near first step the push rod body, makes the push rod overall structure consistent with existing push rod structure; Can not influence the structure and the outward appearance of entire internal combustion engine, and easy to process, good stability.
In the above-mentioned true example, spring can adopt pressure spring, butterfly spring etc.
Need to prove at last; Above embodiment is only in order to technological scheme but not the restriction technologies scheme of explanation the utility model; Although the claimant specifies the utility model with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that those technological schemes to the utility model make amendment or be equal to replacement; And do not break away from the aim and the scope of present technique scheme, all should be encompassed in the middle of the claim scope of the utility model.
Claims (7)
1. an internal-combustion engine is with elastic buffer formula push rod; Comprise push rod body and first bulb and second bulb of being located at push rod body two ends; It is characterized in that: also comprise a bulb base, said bulb base and bulb are fixed, and this bulb base links to each other with the push rod body through sleeve; In sleeve, be provided with a spring, said spring and can compress said spring position through pushing first bulb between bulb base and push rod body.
2. internal-combustion engine according to claim 1 is characterized in that with elastic buffer formula push rod: on the sidewall of sleeve, also offer an exhaust port at least.
3. internal-combustion engine according to claim 1 and 2 is characterized in that with elastic buffer formula push rod: a side and first bulb of said bulb base are fixed, and opposite side is provided with the column step, this column step and sleeve Spielpassung; The other end at the column step also is provided with a spring positioning shaft, and an end of said spring is sheathed and be fixed on this spring positioning shaft.
4. internal-combustion engine according to claim 1 and 2 is characterized in that with elastic buffer formula push rod: said bulb base is column, and with the sleeve Spielpassung; One end and first bulb of said bulb base are fixed, and the other end is provided with the spring positioning shaft, and an end of said spring is sheathed and be fixed on this spring positioning shaft.
5. internal-combustion engine according to claim 1 and 2 is characterized in that with elastic buffer formula push rod: said sleeve is fixedly connected through screw thread with the push rod body.
6. internal-combustion engine according to claim 1 and 2 is characterized in that with elastic buffer formula push rod: said sleeve and this body by integral forming of push rod.
7. internal-combustion engine according to claim 1 and 2 is characterized in that with elastic buffer formula push rod: the one-body molded or welding one of said first bulb and bulb base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200902878U CN202451225U (en) | 2012-03-12 | 2012-03-12 | Elastic buffering ejector rod for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200902878U CN202451225U (en) | 2012-03-12 | 2012-03-12 | Elastic buffering ejector rod for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451225U true CN202451225U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200902878U Expired - Fee Related CN202451225U (en) | 2012-03-12 | 2012-03-12 | Elastic buffering ejector rod for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762582A (en) * | 2016-08-16 | 2018-03-06 | 上海高斯通船舶配件有限公司 | One kind has pooling feature gapless combustion engine mechanical formula valve tappet |
| CN109026247A (en) * | 2018-08-18 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of diesel engine mandril and its manufacturing process |
-
2012
- 2012-03-12 CN CN2012200902878U patent/CN202451225U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762582A (en) * | 2016-08-16 | 2018-03-06 | 上海高斯通船舶配件有限公司 | One kind has pooling feature gapless combustion engine mechanical formula valve tappet |
| CN109026247A (en) * | 2018-08-18 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of diesel engine mandril and its manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20180312 |