CN201184220Y - Valve tappet - Google Patents
Valve tappet Download PDFInfo
- Publication number
- CN201184220Y CN201184220Y CNU2008200351135U CN200820035113U CN201184220Y CN 201184220 Y CN201184220 Y CN 201184220Y CN U2008200351135 U CNU2008200351135 U CN U2008200351135U CN 200820035113 U CN200820035113 U CN 200820035113U CN 201184220 Y CN201184220 Y CN 201184220Y
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- CN
- China
- Prior art keywords
- lugs
- valve
- spherical
- roller
- seat
- 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 a valve lifter for controlling the opening and closing of a valve of an automobile engine. The valve lifter is structurally characterized in that two lugs are oppositely arranged at the bottom end of a cylindrical seat body; a groove is formed between the two lugs; roller shaft mounting holes are formed on the two lugs and matched with each other; a concave cavity is formed at the top end of the seat body corresponding to the two lugs; an lubricating hole is formed on the wall of the concave cavity, penetrates the seat body, and extends to the groove between the two lugs; a guide device is arranged on the side wall of the seat body; a spherical seat is arranged at the bottom of the concave cavity and the wall surface of the spherical seat is sunken in the shape of a spherical surface; an opening of the spherical seat is in the backward direction of the two lugs; a lubricating hole is formed on the spherical seat and penetrates the spherical seat. When the valve lifter of the utility model is used, the spherical seat and the valve rod are in surface contact, thereby greatly strengthening the abrasion resistance, tensile resistance and compression resistance, avoiding excessive wear between the spherical seating and the valve rod, and effectively prolonging the service life.
Description
Technical field
The utility model relates to the device of a kind of Control of Automobile engine valve opening and closing, especially a kind of valve tappet.
Background technique
Valve tappet mainly is the distribution device that is applied in the motor car engine.The distribution device main member has valve, valve seat, valve guide bushing, valve spring, rocking arm, valve tappet, camshaft, timing gear etc., they are responsible for the air inlet and the exhaust work of cylinder, when whole mechanism works, drive camshaft by bent axle, camshaft drives valve tappet, valve tappet drives valve opening by valve guide bushing and corresponding part and closes, needs according to each cylinder working stroke of motor, time opening and close inlet and exhaust valve, the motion of fitting piston is imported mixed gas cylinder like clockwork and waste gas is discharged cylinder.Distribution device is motor " control centre ", and normally undesired during the motor operation, distribution device plays very crucial effect.As the vitals in the distribution device, roller rocker arms need be born the driving force from cam and two parts of valve stem, and bear pendulum model to-and-fro motion continuously, therefore for the friction resistant of parts, wear resistance requires than higher, and also there is higher requirement the material hardness of each component and mechanical property aspect.Simultaneously smooth, how also very important with the correct stressed relation of contacted each component maintenance in order to guarantee parts and distribution device overall work, particularly aspect being connected of camshaft and valve guide bushing.
Though it is more extensive that valve tappet is used at present, in the present like product, for being connected of rocking arm and valve guide bushing, what adopt usually is to be designed to roller to cooperate contact, usually cause the roller wearing and tearing big, working life is short, and flexibility and sense of rotation are subjected to bigger influence.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and contacts, greatly strengthened that it is wear-resistant in use with valve stem formation face, tension, compression resistance, the valve tappet that effectively increases the service life.
The technological scheme that provides according to the utility model, pedestal bottom in column is oppositely arranged two lugs, form channel form between two lugs, on two lugs, offer the roller shaft mounting hole that cooperatively interacts, pedestal top in two lug correspondences offers cavity, wall at cavity offers the oilhole that connects pedestal and extend to groove between two lugs, present body sidewall is provided with guiding device, be provided with the spheric seating that wall is spherical calotte shape depression in the bottom of described cavity, described spheric seating opening is two lugs dorsad, offer the oilhole that connects spheric seating on spheric seating.
The guiding groove that described guiding device is offered for the pedestal sidewall.The roller shaft of pegging graft in the roller shaft mounting hole is fixed with roller on roller shaft, described roller is arranged between two lugs in the groove.
The utility model since in use spheric seating contact with valve stem formation face, strengthened greatly that it is wear-resistant, tension, compression resistance, avoid spheric seating and valve stem inordinate wear, effectively increase the service life.
Description of drawings
Fig. 1 is a plan view of the present utility model.
Fig. 2 is a plan view of the present utility model.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B-B sectional view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: pedestal 1 bottom in column is oppositely arranged two lugs 2, form channel form between two lugs 2, on two lugs 2, offer the roller shaft mounting hole 3 that cooperatively interacts, pedestal 1 top in two lugs, 2 correspondences offers cavity, wall at cavity offers the oilhole 4 that connects pedestal 1 and extend to groove between two lugs 2, be provided with guiding device at pedestal 1 sidewall, be provided with the spheric seating 5 that wall is spherical calotte shape depression in the bottom of described cavity, described spheric seating 5 openings are two lugs 2 dorsad, offer the oilhole 40 that connects spheric seating 5 on spheric seating 5, this oilhole 40 has made things convenient for the processing of spheric seating 5 when making.
Described guiding device is the guiding groove 8 that pedestal 1 sidewall is offered.Grafting roller shaft 6 in roller shaft mounting hole 3 is fixed with roller 7 on roller shaft 6, described roller 7 is arranged between two lugs 2 in the groove.
Valve tappet of the present utility model belongs to the roller tappet in the mechanical tappet, its novel structure, and superior performance, wear resistance improves greatly.Roller shaft 6 wherein can contain special beryllium bronze composition when making, greatly strengthened wear-resistant, tension, the compression resistance of valve tappet bar, has increased the working life of roller 7 with roller shaft 6.Simultaneously, in order to guarantee that valve stem contacts with the utility model and transmission is good, spheric seating 5 in this product is designed to eccentric sphere, it is spherical that valve stem one end also is designed to cooperate with the sphere of spheric seating 5 depression, in use, guaranteeing that spheric seating 5 can cooperate flexibly with the ball end of valve stem contacts, and makes the valve stem member to rotate flexibly within the specific limits.For with the contacted roller 7 of camshaft member, adopted barrel-type roller in the product, because roller 7 has the circulation increase in the course of the work with the contact stress of camshaft, the increase of stress, often cause camshaft and roller 7 wearing and tearing aggravations, make fuel feeding anterior angle and each oil supply cylinder angular interval change the diesel engine performance variation.And adopted barrel-type roller, roller outer surface to be cydariform, and can significantly reduce edge stress, effectively reduce the contact stress between roller and the cam friction pair, prolong the working life of cam and roller.
Working procedure of the present utility model and working principle are as follows:
Product is applied in the motor car engine distribution device, when engine operation, it is moving that camshaft in the gas distribution system begins not stall, form and drive reciprocating that valve tappet does not stop by contact (face contact) with roller in the valve tappet, the valve tappet the other end is connected (formation spherical pair) by the eccentric sphere in the spheric seating with valve guide bushing simultaneously, driving valve opening by valve guide bushing and corresponding part closes, needs according to each cylinder working stroke of motor, time opening and close inlet and exhaust valve, the motion of fitting piston is imported mixed gas cylinder like clockwork and waste gas is discharged cylinder.Must guarantee that in this course the roller in the valve tappet rotates flexibly, the cam on the camshaft contacts with roller well, and valve guide bushing rotates flexibly in the eccentric sphere of spheric seating simultaneously.
Claims (4)
1, a kind of valve tappet, be included in two lugs (2) that pedestal (1) bottom of column is oppositely arranged, two lugs form channel form between (2), on two lugs (2), offer the roller shaft mounting hole (3) that cooperatively interacts, pedestal (1) top corresponding at two lugs (2) offers cavity, wall at cavity offers the oilhole (4) that connects pedestal (1) and extend to groove between two lugs (2), be provided with guiding device at pedestal (1) sidewall, it is characterized in that: be provided with the spheric seating (5) that wall is spherical calotte shape depression in the bottom of described cavity, described spheric seating (5) opening is two lugs (2) dorsad, offer the oilhole (40) that connects spheric seating (5) on spheric seating (5).
2, valve tappet as claimed in claim 1 is characterized in that: described guiding device is the guiding groove (8) that pedestal (1) sidewall is offered.
3, valve tappet as claimed in claim 1 is characterized in that: grafting roller shaft (6) in roller shaft mounting hole (3), on roller shaft (6), be fixed with roller (7), and described roller (7) is arranged between two lugs (2) in the groove.
4, valve tappet as claimed in claim 1 is characterized in that: the wall of spheric seating (5) is eccentric spherical calotte shape depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200351135U CN201184220Y (en) | 2008-04-11 | 2008-04-11 | Valve tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200351135U CN201184220Y (en) | 2008-04-11 | 2008-04-11 | Valve tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201184220Y true CN201184220Y (en) | 2009-01-21 |
Family
ID=40271960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200351135U Expired - Fee Related CN201184220Y (en) | 2008-04-11 | 2008-04-11 | Valve tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201184220Y (en) |
-
2008
- 2008-04-11 CN CNU2008200351135U patent/CN201184220Y/en not_active Expired - Fee Related
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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 |
Granted publication date: 20090121 Termination date: 20170411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |