CN109944654A - Valve rocker, internal combustion engine and the method for manufacturing valve rocker - Google Patents
Valve rocker, internal combustion engine and the method for manufacturing valve rocker Download PDFInfo
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- CN109944654A CN109944654A CN201811588523.7A CN201811588523A CN109944654A CN 109944654 A CN109944654 A CN 109944654A CN 201811588523 A CN201811588523 A CN 201811588523A CN 109944654 A CN109944654 A CN 109944654A
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- Prior art keywords
- valve
- rocker
- thickness
- bottom plate
- side wall
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Abstract
The invention discloses a kind of valve rockers of valve system for internal combustion engine, internal combustion engine and method for manufacturing valve rocker, valve rocker has bottom plate (6) and two side walls (5), described two side walls (5) and the bottom plate (6) surround U-shaped, wherein, in the ram seat (7) that the both ends of the bottom plate (6) are respectively arranged to the plunger cap (10) being in contact with the tappet of the valve system (3) and are in contact for the valve actuating push rod (2) with the valve system, the ram seat (7) is equipped with the guide groove (8) for guiding the valve actuating push rod.Design scheme according to the present invention fabricates the side wall (5) and bottom plate (6) of the valve rocker by thickening plate, so that the depth of the guide groove (8) is greater than the thickness of the side wall (5).
Description
Technical field
The present invention relates to the field of internal combustion engine for vehicle, are related to a kind of valve rocker of valve system for internal combustion engine
And the method for manufacturing this valve rocker.
Background technique
In existing vehicle internal combustion engine, it is generally provided with valve system, and is therefore equipped with and turns cam rotary motion
It is changed to the valve rocker apparatus of the linear motion of driving valve actuating push rod.The valve rocker for being currently assembled into engine mostly uses steel plate
Stamping mode, integral type shape the main part of valve rocker, i.e. side wall and bottom plate.Since side wall and bottom plate are by same
Steel plate is made, therefore side wall and bottom plate thickness having the same.
A kind of structure of valve rocker apparatus is disclosed in CN 1589364Y, this is a kind of roller rocker arms, by sheet metal
At rocker arm body, pivot and roller constitute, rocker arm body includes the bottom plate of two side walls and connection two side walls.Rocker arm master
Body is formed by carrying out extrusion process to metal plate, integrally-formed side wall and bottom plate with same thickness.The punching press on bottom plate
Out for guiding the guide groove of valve actuating push rod, therefore the thickness of guide groove does not exceed the thickness of side wall.Due in two side walls
Between be equipped with roller, therefore the thickness of inner sidewall is affected in a limited space, so that the thickness of bottom plate also will receive limitation.
The thickness of the valve rocker manufactured by means of which, guide groove is typically not greater than 2.5mm.In valve actuating push rod work, it is easy
It is detached from guide groove, to influence the opening process of air valve.Further, since the thickness of bottom plate is restricted, the thickness of ram seat
It is affected by limitation, the fatigue strength of valve rocker can be reduced in this way.
Summary of the invention
Therefore, technical problem to be solved by the invention is to provide a kind of improved valve rocker, it can be more effectively
It avoids valve actuating push rod from being detached from valve rocker during exercise and improves fatigue strength.
The technical problem is solved by a kind of valve rocker of valve system for internal combustion engine, which has
Bottom plate and two side walls, two side walls and bottom plate generally surround U-shaped, i.e. two side walls are parallel to each other and phase vertical with bottom plate
It hands over, wherein be respectively arranged to the plunger cap being in contact with the tappet of valve system at the both ends of bottom plate and be used for and valve train
The ram seat that the valve actuating push rod of system is in contact, ram seat are equipped with the guide groove for guiding valve actuating push rod.Valve actuating push rod is working
When can be moved in guide groove.In order to more effectively avoid valve actuating push rod from being detached from guide groove, by thickening plate processing and manufacturing or one
The side wall and bottom plate of forming valve rocker utilize the part to thicken so that the thickness of bottom plate is at least partially larger than the thickness of side wall
Stamp out guide groove, so that the depth of guide groove is greater than the thickness of side wall, therefore deeper guide groove can be obtained,
It ensure that the kinetic stability of valve actuating push rod.
Thickening plate (VRB, Variable-thickness Rolled Blanks or TRB, Tailor-Rolled
It Blanks) is that flexible rolling acquisition is implemented by rolling mill.During the rolling process, by the rolling mill screwdown thickness control of special designing
System processed controls the position of roll, so that the spacing between roll and steel plate adjusts variation in real time, to make to roll out thin
Plate has the Varying-thickness distribution customized in advance on along steel plate rolling direction.Therefore, the rocker arm fabricated by thickening plate
Blank can have different thickness, then relatively thin section is bent to the side wall of valve rocker, thicker section conduct again
Bottom plate can thus make the thickness of bottom plate be no longer influenced by the limitation of sidewall thickness, have depth so as to process
Guide groove and bigger thickness ram seat.
According to a preferred embodiment of the present invention, the thickness for being located at the ram seat on bottom plate is greater than the thickness of the side wall
Degree.Due to being processed into the ram seat of bottom plate using thickening plate, the thickness of ram seat is enabled to be greater than the thickness of side wall, thus
Provide the volume fatigue strength of valve rocker.Also it is preferred that thickness of the thickness of plunger cap also greater than side wall, i.e., so that
The thickness of entire bottom plate is both greater than the thickness of side wall, so that the plunger cap and ram seat that are arranged on bottom plate are both greater than the thickness of side wall
Degree.Spherical recess portion for accommodating tappet can also be set on the plunger cap, since the thickness of plunger cap is thicker, so energy
Enough settings have the spherical recess portion of deeper depth, to preferably accommodate tappet.
According to a further advantageous embodiment of the invention, the depth of guide groove is more than or equal to 3mm.The side of usual valve rocker
The thickness of wall is 2.5mm, it is possible to set 3mm, even greater than 3mm for the depth of guide groove, such as reach 3.5mm.
According to a further advantageous embodiment of the invention, valve rocker is roller rocker arms.Preferably, it is respectively opened on side wall
There is a mounting hole relative to each other, pivot is fixedly installed between mounting hole, bearing is disposed on pivot.Due to roller rocker arms
It needs to dispose bearing between side wall, the thickness of inner sidewall cannot be too thick in a limited space, in the prior art usually integral type
The side wall and bottom plate of valve rocker are shaped, therefore the thickness of side wall also will affect the thickness of bottom plate, to influence the thickness of ram seat
The depth of degree and guide groove.Design scheme according to the present invention processes the side wall and bottom plate of valve rocker using thickening plate, can
With by the thickness differentiated of side wall and bottom plate design, so as to avoid sidewall thickness influence base plate thickness the problem of.
The invention further relates to a kind of internal combustion engine for vehicle, which has valve rocker as described above.
In addition, a kind of method of the valve rocker of valve system of the technical problem also by manufacture for internal combustion engine solves
Certainly.Have following method and step according to the solution of the present invention: firstly, manufacturing rocker arm blank using thickening plate processing technology, this is shaken
The two-end thickness of arm blank is lower than the interior thickness of rocker arm blank；Then, the both ends of rocker arm blank are bent to valve rocker
The centre of rocker arm blank is surrounded U-shaped by side wall；Finally, one to bottom plate
End carries out punching press, the ram seat being in contact for the valve actuating push rod with valve system is made and for guiding leading for valve actuating push rod
To slot, wherein the depth of guide groove is greater than the thickness of side wall.Preferably, when carrying out punching press to bottom plate, so that ram seat
Thickness is greater than the thickness of side wall.
Detailed description of the invention
It elaborates according to the preferred embodiment of the present invention with reference to the accompanying drawing.Attached drawing are as follows:
Fig. 1 is the partial schematic diagram of the valve system of internal combustion engine；
Fig. 2 is the perspective view of valve rocker；
Fig. 3 is the method flow diagram for manufacturing valve rocker.
In the accompanying drawings, identical or intimate component uses identical appended drawing reference.
Specific embodiment
Fig. 1 shows the part of the valve system of the internal combustion engine for vehicle.As shown, being used for the internal combustion of vehicle
The valve system of machine generally includes: cam (not shown), valve rocker 1, valve actuating push rod 2 and valve lifter 3, wherein gas
Door rocker arm 1 especially roller rocker arms.Cam is in contact with the roller 4 of valve rocker 1.Cam acts under the drive of camshaft
On the roller 4 of valve rocker 1, so that valve rocker 1 is pressed downward valve actuating push rod 2, to open air valve, air enters cylinder；
Reduce when cam acts on the power on roller 4, the spring of air valve pushes back valve actuating push rod 2, so that air valve is closed.
Fig. 2 shows the perspective views of valve rocker 1 according to the present invention.Valve rocker 1 has two side walls 5 and bottom plate 6, it
Generally surround U-shaped section, i.e. two side walls are arranged in parallel at intervals, and bottom 6 is vertically connected with two side walls.?
A mounting hole is respectively set in middle position in two side walls 5, and pivot 9 is passed through two mounting holes and is fixed on side wall 5.?
Bearing 4 is coaxially disposed on pivot 9.In the tappet of bottom plate 6 being respectively arranged on the surface of bearing 4 with valve system
3 plunger caps 10 being in contact and the ram seat 7 being in contact for the valve actuating push rod 2 with valve system.Preferably, plunger cap 10
And/or the thickness of ram seat 7 is greater than the thickness of side wall 5, the main body for being primarily due to valve rocker is made of thickening plate.In push rod
Guide groove 8 is equipped at seat 7, for guiding the movement of valve actuating push rod 2.Design scheme according to the present invention, the depth d of guide groove 8
Greater than the thickness of side wall 5, preferably greater than 3mm, bigger depth d can guarantee valve actuating push rod 2 at work without departing from guiding
Slot.
Fig. 3 shows the schematic flow chart for manufacturing valve rocker, wherein schematically illustrates and completes in each step
The side view of valve rocker afterwards.Valve rocker is manufactured as follows.
S1: rocker arm blank is manufactured using thickening plate processing technology, the two-end thickness of rocker arm blank is lower than in rocker arm blank
Between thickness；
The both ends of rocker arm blank: being bent to the side wall of valve rocker by S2 respectively, using the centre of rocker arm blank as valve
The bottom plate of rocker arm, two side walls and bottom plate surround U-shaped；
S3: carrying out punching press to one end of bottom plate, be made the ram seat that is in contact for the valve actuating push rod with valve system with
And the guide groove for guiding valve actuating push rod, wherein the depth of guide groove is greater than the thickness of side wall.
Although being illustratively described possible embodiment in the above description, it should be appreciated that arrive, still through institute
With the presence of the variation of technical characteristic known and that furthermore technical staff is readily apparent that and a large amount of embodiments of combination of embodiment.
Furthermore it should also be understood that illustrative embodiment is as just an example, this embodiment never limits in any form
Protection scope of the present invention, application and construction processed.It is more that one kind is provided to technical staff for converting by preceding description
The technological guidance of at least one illustrative embodiments, wherein, can be into without departing from the protection scope of claims
Row various changes, especially with respect to the component function and structure in terms of change.
Reference signs list
1 valve rocker
2 valve actuating push rods
3 tappets
4 bearings
5 side walls
6 bottom plates
7 ram seats
8 guide grooves
9 pivots
10 plunger caps
The depth of d guide groove
Claims (10)
1. a kind of valve rocker (1) of valve system for internal combustion engine has bottom plate (6) and two side walls (5), described two
Side wall (5) and the bottom plate (6) surround U-shaped, wherein are respectively arranged to and the valve train at the both ends of the bottom plate (6)
The plunger cap (10) and the ram seat being in contact for the valve actuating push rod (2) with the valve system that the tappet (3) of system is in contact
(7), the ram seat (7) is equipped with the guide groove (8) for guiding the valve actuating push rod,
It is characterized in that, the side wall (5) and bottom plate (6) of the valve rocker are fabricated by thickening plate, so that the guiding
The depth of slot (8) is greater than the thickness of the side wall (5).
2. valve rocker (1) according to claim 1, which is characterized in that the thickness of the ram seat (7) is greater than the side
The thickness of wall (5).
3. valve rocker (1) according to claim 1 or 2, which is characterized in that the thickness of the plunger cap (10) is greater than institute
State the thickness of side wall (5).
4. valve rocker (1) according to claim 3, which is characterized in that be arranged on the plunger cap (10) for holding
Receive the spherical recess portion of the tappet.
5. valve rocker (1) according to claim 1, which is characterized in that the depth of the guide groove (8) is more than or equal to
3mm。
6. valve rocker (1) according to claim 1, which is characterized in that the valve rocker (1) is roller rocker arms.
7. valve rocker (1) according to claim 6, which is characterized in that be respectively provided with a phase each other on the side wall (5)
Pair mounting hole, between the mounting hole be fixedly installed pivot (9), on the pivot dispose bearing (4).
8. a kind of internal combustion engine for vehicle, which is characterized in that the internal combustion engine has according to claim 1 to any one of 7
The valve rocker.
9. a kind of method of the valve rocker of valve system of manufacture for internal combustion engine, which is characterized in that make in accordance with the following steps
Make the valve rocker:
S1: rocker arm blank is manufactured using thickening plate processing technology, the two-end thickness of the rocker arm blank is lower than the rocker arm blank
Interior thickness；
The both ends of the rocker arm blank: being bent to the side wall of the valve rocker by S2 respectively, by the centre of the rocker arm blank
As the bottom plate of the valve rocker, two side walls and bottom plate surround U-shaped；
S3: punching press is carried out to one end of the bottom plate, the push rod for being in contact with the valve actuating push rod of the valve system is made
Seat and the guide groove for guiding the valve actuating push rod, wherein the depth of the guide groove is greater than the thickness of the side wall.
10. according to the method described in claim 9, it is characterized in that, the punching press makes the push rod in method and step S3
The thickness of seat is greater than the thickness of the side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588523.7A CN109944654A (en) | 2018-12-25 | 2018-12-25 | Valve rocker, internal combustion engine and the method for manufacturing valve rocker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588523.7A CN109944654A (en) | 2018-12-25 | 2018-12-25 | Valve rocker, internal combustion engine and the method for manufacturing valve rocker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109944654A true CN109944654A (en) | 2019-06-28 |
Family
ID=67006478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588523.7A Pending CN109944654A (en) | 2018-12-25 | 2018-12-25 | Valve rocker, internal combustion engine and the method for manufacturing valve rocker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109944654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021123366A1 (en) | 2020-11-23 | 2022-05-25 | Schaeffler Technologies AG & Co. KG | Method of manufacturing a rocker arm for a valve train and rocker arm for a valve train |
-
2018
- 2018-12-25 CN CN201811588523.7A patent/CN109944654A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021123366A1 (en) | 2020-11-23 | 2022-05-25 | Schaeffler Technologies AG & Co. KG | Method of manufacturing a rocker arm for a valve train and rocker arm for a valve train |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190628 |
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| WD01 | Invention patent application deemed withdrawn after publication |