CN209163981U - High-pressure pump roller tappet - Google Patents
High-pressure pump roller tappet Download PDFInfo
- Publication number
- CN209163981U CN209163981U CN201822126328.4U CN201822126328U CN209163981U CN 209163981 U CN209163981 U CN 209163981U CN 201822126328 U CN201822126328 U CN 201822126328U CN 209163981 U CN209163981 U CN 209163981U
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- CN
- China
- Prior art keywords
- guide sleeve
- pressure pump
- locating piece
- arc panel
- roller tappet
- 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.)
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Abstract
High-pressure pump roller tappet, for engine injection system, between the fuel feed pump plunger being installed in engine cylinder cover and driving cam, including guide sleeve, pin shaft, roller external member and locating piece, roller external member includes roller and needle roller, the front and rear sides on guide sleeve top have curved wall, the left and right sides has flat sidewall, symmetric position offers axis hole in flat sidewall, locating piece hole is offered on guide sleeve, it is equipped with and the integrally formed arc panel of guide sleeve between left and right sides inner wall below flat sidewall, structure hole is equipped between the front and rear sides and guide sleeve inner wall of arc panel.The utility model uses monolithic construction, and guide sleeve is integrally formed, and manufacturing procedure is few, and reasonable distribution is realized to the material of one-piece parts, has reached high rigidity, low weight purpose, it can satisfy requirement of the different model engine to rigidity, improve stock utilization.
Description
Technical field
The utility model relates to engine apparatus technical fields, in particular to high-pressure pump roller tappet.
Background technique
Roller tappet is a kind of important component of automobile engine using high-pressure oil pump system, be mounted on driving cam and
Between tappet, straight reciprocating motion being converted by the rotary motion for driving cam while tappet being pushed to move, primary structure includes
Guide sleeve, bracket, roller and pin shaft.
There are two types of structures: monoblock type and fission according to the relationship of guide sleeve and bracket for existing high-pressure oil pump roller tappet
Formula.The guide sleeve of monolithic construction is integrally formed with the force bearing plate as bracket, the shape of force bearing plate be it is planar, by complicated
Machining is made, and process flow is complicated, with high costs, can not also optimize the service efficiency of material, weight weight, and inertia force is big；Point
Body formula is that guide sleeve is individually formed with bracket, insufficient rigidity, and noise is larger during the work time, influences user experience.
Utility model content
The utility model will solve problem of the prior art, provide high-pressure pump roller tappet, use monolithic construction, lead
It is integrally formed to set, manufacturing procedure is few, and realizes reasonable distribution to the material of one-piece parts, has reached high rigidity, low heavy
Purpose is measured, can satisfy requirement of the different model engine to rigidity.
In order to achieve the above objectives, the technical solution adopted in the utility model is as follows:
High-pressure pump roller tappet is used for engine injection system, the fuel feed pump plunger being installed in engine cylinder cover and driving
Between cam, including guide sleeve, pin shaft, roller external member and locating piece, roller external member include roller and needle roller, and guide sleeve lower part is in
Cylinder-like structure, the front and rear sides on top have outer profile curved wall identical with lower part, and the left and right sides has flat sidewall,
Locating piece hole is offered on the side wall of guide sleeve, symmetric position offers axis hole in the flat sidewall of two sides.After installation, pin shaft frame
It is located in axis hole, and to the rotation riveting deformation of pin shaft both ends, guarantees that rotation riveting rear pin shaft is not easily to fall off, roller external member covers on pin shaft and two
There is gap, it is ensured that roller external member can be freely rotated, and locating piece is fixed in locating piece hole between end and flat sidewall.It is described
Between left and right sides inner wall below flat sidewall be equipped with the integrally formed arc panel of guide sleeve, the front and rear sides of arc panel with
Structure hole is equipped between guide sleeve inner wall.
Preferably, the action of the arc panel and the length ratio of front and back are between 0.05~0.3.Ratio difference causes
Arc panel bending degree is different, and arc panel local thickness is variable, plays the role of mitigation weight, increases the rigidity of structure.
Preferably, the bus of the arc panel and the axis of axis hole are parallel to each other.
Preferably, cross sectional shape is arc-shaped or hyperbola or parabola shaped the arc panel in the front-back direction.
Preferably, the middle position of the arc panel lower surface is equipped with boss.Boss surface is in plane or curved surface, region
Greater than fuel feed pump plunger head zone, as the working face with plunger contact.
Preferably, passing through the chamfered transition with circular curve between the flat sidewall lower part and guide sleeve side wall.
Preferably, the curved wall and the profile of flat sidewall be in two sections of circular arcs, the track type of two sections of rectilinear(-al)s,
The contour smoothing transition of curved wall and flat sidewall.
Preferably, the thickness of the flat sidewall is greater than or equal to the thickness of curved wall, flat sidewall plays increase
The effect of rigidity, circular arc portion play the role of mitigating weight.
Preferably, the locating piece hole is opened in the lower part of the wherein curved wall or guide sleeve of side, work as positioning
When block hole is opened in the wherein curved wall of side, the side wall uniform thickness of locating piece hole site or not uniform thickness, when locating piece hole opens up
When the lower part of guide sleeve, the partial sidewalls around locating piece hole have thickening part, increase the structural strength of locating piece.
Preferably, the locating piece successively includes semi-cylindrical in configuration, opens outward to the web of contract and two
The edge of a wing.The cross sectional shape of web is matched with the shape in locating piece hole, and the edge of a wing is formed by the way that web to be inserted into after window to reprocess,
After installation, web is clipped in locating piece hole, and guide sleeve side wall is clamped on semi-cylindrical in configuration and the edge of a wing inside and outside, keeps locating piece complete
It is fixed on guide sleeve entirely, it is convenient for assembly and not easily to fall off, the positioning action of entire roller tappet is played, in whole assembly
When semi-cylindrical in configuration be mounted in the locating slot of Oil pump cylinder, play a part of to prevent entire roller tappet from rotating in cylinder body.
Preferably, the outermost end of the positioning block header arc surface is divided into planar structure, high-pressure pump roller is prevented
Tappet has good assembly performance in engine cylinder internal interference.
Preferably, the structure hole generates simultaneously when being oriented to sleeve forming, and two structure hole symmetrical shapes, and its shape
Shape changes according to the change in shape in arc panel front and rear sides face, changeable, plays mitigation weight, reduces inertia force, simultaneously
Play the role of lubricating oil to pass through, so that plunger and arc panel be made to have lubricating oil to pass through, reduces frictional force, reduce the mill of arc panel
Damage.
The utility model has the beneficial effects that: using monolithic construction, guide sleeve is integrally formed, and manufacturing procedure is few,
And reasonable distribution is realized to the material of one-piece parts, has reached high rigidity, low weight purpose can satisfy different model hair
Requirement of the motivation to rigidity, improves stock utilization, since overall weight is few, reduces motion inertia force, reduce friction with
Abrasion, the operation is stable improve engine efficiency.
Detailed description of the invention
Fig. 1 is the operation schematic diagram of the utility model；
Fig. 2 is the perspective view of the utility model；
Fig. 3 is the sectional view of the utility model；
Fig. 4 is the perspective view of guide sleeve in the utility model；
Fig. 5 is the top view of guide sleeve in the utility model；
Fig. 6 be in Fig. 5 A-A to sectional view；
Fig. 7 is the sectional view of B-B direction in Fig. 5；
Fig. 8 is the sectional view of arc panel in the utility model；
Fig. 9 is pin shaft and the perspective view of roller external member in the utility model；
Figure 10 is perspective view when locating piece is located at guide sleeve lower part in the utility model；
Figure 11 is the perspective view of locating piece in the utility model.
In figure: 1, guide sleeve；1.1, curved wall；1.2, flat sidewall；1.3, axis hole；1.4, locating piece hole；1.5, arc
Shape plate；1.6, structure hole；1.7, boss；1.8, inclined-plane；1.9, thickening part；2, pin shaft；3, roller external member；3.1, roller；3.2,
Needle roller；4, locating piece；4.1, semi-cylindrical in configuration；4.2, web；4.3, the edge of a wing；5, cam is driven；6, fuel feed pump plunger.
Specific embodiment
The utility model is further described below by specific embodiment and attached drawing.
Embodiment are as follows: picture 1-4 and shown in Fig. 9, high-pressure pump roller tappet is used for engine injection system, is installed on
Between driving cam 5 in engine cylinder cover and fuel feed pump plunger 6, including guide sleeve 1, pin shaft 2, roller external member 3 and locating piece 4,
Roller external member 3 includes roller 3.1 and needle roller 3.2, and the front and rear sides of the cylindrical structure in 1 lower part of guide sleeve, top have foreign steamer
Wide curved wall 1.1 identical with lower part, the left and right sides have flat sidewall 1.2, offer locating piece on the side wall of guide sleeve 1
Hole 1.4, symmetric position offers axis hole 1.3 in the flat sidewall 1.2 of two sides.The profile of curved wall 1.1 and flat sidewall 1.2
In two sections of circular arcs, the track type of two sections of rectilinear(-al)s, and the thickness of flat sidewall 1.2 is greater than or equal to curved wall 1.1
Thickness.
In conjunction with shown in Fig. 4-7, it is equipped between the left and right sides inner wall of 1.2 lower section of flat sidewall and is integrally formed with guide sleeve 1
Arc panel 1.5, structure hole 1.6 is equipped between 1 inner wall of front and rear sides and guide sleeve of arc panel 1.5, and under arc panel 1.5
The middle position on surface is equipped with boss 1.7.Wherein, pass through band circular curve between 1 side wall of 1.2 lower part of flat sidewall and guide sleeve
1.8 transition of inclined-plane.In addition, the axis of the bus of arc panel 1.5 and axis hole 1.3 is either state parallel to each other, it can also
To be not parallel state.
As shown in connection with fig. 8, cross sectional shape is arc-shaped or hyperbola or parabola shaped arc panel 1.5 in the front-back direction,
The ratio between the action H of arc panel 1.5 and the length L of front and back are between 0.05~0.3.
Wherein, in conjunction with shown in Fig. 2-4, locating piece hole 1.4 can be opened in the curved wall 1.1 of wherein side, locating piece
The side wall uniform thickness of 1.4 position of hole or not uniform thickness, alternatively, as shown in connection with fig. 10, locating piece hole 1.4 can also be opened in guide sleeve 1
Lower part, and the partial sidewalls around locating piece hole 1.4 have thickening part 1.9.
In conjunction with shown in Figure 11, locating piece 4 is successively outside including semi-cylindrical in configuration 4.1, to the web 4.2 of contract and two
The edge of a wing 4.3 that side is opened.After installation, web 4.2 is clipped in locating piece hole 1.4, and semi-cylindrical in configuration 4.1 and the edge of a wing 4.3 are from inside and outside
1 side wall of guide sleeve is clamped in two sides, is completely fixed in locating piece 4 on guide sleeve 1.
Roller external member 3 offsets with driving cam 5 after roller tappet is assembled to engine, 1.5 lower part of arc panel of guide sleeve 1
It offsets with fuel feed pump plunger 6, the rotary motion of driving cam 5 is converted into the straight reciprocating motion of roller tappet while pushing oil pump column
6 movement of plug, because driving the power of cam 5 directly to pass through arc panel 1.5 in mechanism is transferred to fuel feed pump plunger 6, in this practical way
The structure of arc panel 1.2 allows to carry bigger load.
The foregoing is merely the structure features of specific embodiment of the utility model, but the utility model to be not limited to
This, the utility model can be used on similar product, and any those skilled in the art is in the field of the utility model, institute
The changes or modifications of work all cover among the scope of the patents of the utility model.
Claims (10)
1. high-pressure pump roller tappet is used for engine injection system, driving cam (5) and the oil pump being installed in engine cylinder cover
Between plunger (6), including guide sleeve (1), pin shaft (2), roller external member (3) and locating piece (4), roller external member (3) includes roller
(3.1) and needle roller (3.2), the front and rear sides of the cylindrical structure in guide sleeve (1) lower part, top have outer profile identical as lower part
Curved wall (1.1), the left and right sides has flat sidewall (1.2), and the two sides symmetric position of flat sidewall (1.2) offers axis
Hole (1.3) offers locating piece hole (1.4) on guide sleeve (1), it is characterised in that: the left and right below the flat sidewall (1.2)
It is equipped with and guide sleeve (1) integrally formed arc panel (1.5), the front and rear sides of arc panel (1.5) and guiding between the inner wall of two sides
It covers and is equipped with structure hole (1.6) between (1) inner wall.
2. high-pressure pump roller tappet according to claim 1, it is characterised in that: the action of the arc panel (1.5) is with before
Length ratio afterwards is between 0.05~0.3.
3. high-pressure pump roller tappet according to claim 1 or 2, it is characterised in that: the bus of the arc panel (1.5) with
The axis of axis hole (1.3) is parallel to each other.
4. high-pressure pump roller tappet according to claim 2, it is characterised in that: the arc panel (1.5) is in the front-back direction
Cross sectional shape is arc-shaped or hyperbola or parabola shaped.
5. high-pressure pump roller tappet according to claim 2, it is characterised in that: in arc panel (1.5) lower surface
Meta position has installed boss (1.7).
6. high-pressure pump roller tappet according to claim 1, it is characterised in that: flat sidewall (1.2) lower part with lead
To passing through inclined-plane (1.8) transition with circular curve between set (1) side wall.
7. high-pressure pump roller tappet according to claim 1, it is characterised in that: the curved wall (1.1) and planar side
The profile of wall (1.2) is in two sections of circular arcs, the track type of two sections of rectilinear(-al)s.
8. high-pressure pump roller tappet according to claim 7, it is characterised in that: the thickness of the flat sidewall (1.2) is big
In or be equal to curved wall (1.1) thickness.
9. high-pressure pump roller tappet according to claim 1, it is characterised in that: the locating piece hole (1.4) is opened in it
The curved wall (1.1) of middle side or the lower part of guide sleeve (1), and locating piece hole (1.4) are opened in the lower part of guide sleeve (1)
When, the partial sidewalls around locating piece hole (1.4) have thickening part (1.9).
10. according to claim 1 or high-pressure pump roller tappet described in 9, it is characterised in that: the locating piece (4) successively includes
Semi-cylindrical in configuration (4.1), the edge of a wing (4.3) opened outward to the web (4.2) of contract and two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126328.4U CN209163981U (en) | 2018-12-18 | 2018-12-18 | High-pressure pump roller tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126328.4U CN209163981U (en) | 2018-12-18 | 2018-12-18 | High-pressure pump roller tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209163981U true CN209163981U (en) | 2019-07-26 |
Family
ID=67344067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822126328.4U Active CN209163981U (en) | 2018-12-18 | 2018-12-18 | High-pressure pump roller tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209163981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372671A (en) * | 2018-12-18 | 2019-02-22 | 杭州新坐标科技股份有限公司 | High-pressure pump roller tappet |
-
2018
- 2018-12-18 CN CN201822126328.4U patent/CN209163981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372671A (en) * | 2018-12-18 | 2019-02-22 | 杭州新坐标科技股份有限公司 | High-pressure pump roller tappet |
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