CN207161165U - The position limiting structure of rocker arm shaft and camshaft in a kind of engine - Google Patents
The position limiting structure of rocker arm shaft and camshaft in a kind of engine Download PDFInfo
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- CN207161165U CN207161165U CN201721236283.5U CN201721236283U CN207161165U CN 207161165 U CN207161165 U CN 207161165U CN 201721236283 U CN201721236283 U CN 201721236283U CN 207161165 U CN207161165 U CN 207161165U
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- rocker arm
- arm shaft
- camshaft
- limiting plate
- cylinder head
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Abstract
The utility model provides the position limiting structure of rocker arm shaft and camshaft in a kind of engine, belongs to technical field of engines.It solves the problems, such as how reliable and stable to carry out engine convexity wheel shaft and rocker arm shaft spacing and effectively reduce engine component quantity.This engine includes cylinder head; rocker arm shaft and camshaft is plugged in the same direction in cylinder head and camshaft is rotatably connected in cylinder head by bearing; this position limiting structure includes the pressing plate being connected in cylinder head; the side of pressing plate has the limiting plate one bent downwards and the limiting plate two bent downwards, and the side of limiting plate one is resisted against the end of rocker arm shaft；The side of limiting plate two and the outer ring side of bearing lean.Designed more than, the function of some parts such as traditional multiple conventional limiting plates, support, pad is combined, the function of original multiple parts, the reliable and stable quantity to reducing engine component while rocker arm shaft and spacing camshaft progress are embodied on one part.
Description
Technical field
The utility model belongs to technical field of engines, the rocker arm shaft and camshaft being related in engine, particularly one kind
The position limiting structure of rocker arm shaft and camshaft in engine.
Background technology
Engine is the important component on motor vehicle, and chemical energy can be converted into mechanical energy by it, entering, arranging in engine
Typically by rocker arm body and cam mechanism come what is driven, rocking arm is set on rocker arm shaft valve operation, and rotatable swing is convex
There is cam, cam axle is swung by cam driven rocking arm, so as to realize the opening and closing of valve on wheel shaft.Rocker arm shaft and cam
Axle is from mounting hole of the side of the cylinder head plugging in fitting in the same direction in cylinder head, to prevent rocker arm shaft and camshaft at work
Slipped from respective installation site, it is necessary to be carried out to mounted rocker arm shaft and camshaft spacing.
Chinese patent (notification number：CN201031735, the day for announcing：2008-03-05) disclose a kind of engine cylinder head
Rocker arm shaft, the position limiting structure of camshaft, rocker arm shaft and camshaft load on cylinder head and set respectively in the same direction from the side of cylinder head
In the rocking arm shaft mounting hole and camshaft support hole put, camshaft is assembled between two rocker arm shafts in rocker arm shaft, camshaft
Behind position, the loading direction of one of rocker arm shaft is by a dress for assembling bolt spacing backstop, another rocker arm shaft and camshaft
Entering direction, spacing backstop, pressing plate are fixed by screws on cylinder head in the lump by a pressing plate for being arranged on cylinder head, pressing plate tool
There are an arc elongated end and the protuberance extended downwardly, its arc elongated end press against the loading direction of the rocker arm shaft, its protuberance
It press against the bearing face being interference fitted on camshaft.
Spacing to rocker arm shaft and camshaft progress by multiple parts in above-mentioned patent document, stability and reliability are not
It is good, and number of parts is more, and production and assembling are all inconvenient.
The content of the invention
The utility model is directed to above mentioned problem existing for existing technology, there is provided rocker arm shaft and camshaft in a kind of engine
Position limiting structure, technical problem to be solved in the utility model is：It is how reliable and stable to engine convexity wheel shaft and shaking
Arm axle carries out amount of parts that is spacing and effectively reducing engine.
The purpose of this utility model can be realized by following technical proposal：
The position limiting structure of rocker arm shaft and camshaft in a kind of engine, engine include cylinder head, rocker arm shaft and camshaft
It is plugged in the same direction in the cylinder head and the camshaft is rotatably connected in the cylinder head by bearing, its feature exists
In the position limiting structure includes pressing plate, and the pressing plate is connected in the cylinder head, and the side of the pressing plate has bending downwards
Limiting plate one and the limiting plate two that bends downwards, the side of the limiting plate one is resisted against the end of the rocker arm shaft；It is described
The side of limiting plate two and the outer ring side of the bearing lean.
Its operation principle is as follows：Pressing plate is bonded fixation with the faying face of cylinder head；A pair of rocker arm shafts progress of limiting plate are spacing,
The bearing progress that limiting plate two on pressing plate is set to cam outer shaft sleeve is spacing, and the outer ring side of limiting plate two and bearing leans,
Because bearing inner race and camshaft are connected, limiting plate two can be indirectly to camshaft while camshaft normal rotation is not influenceed
Carry out axial limiting；After whole pressing plate installs, it can effectively prevent rocker arm shaft and camshaft from skidding off cylinder head at work,
Pass through the pressure plate structure of one entirety of setting in the technical program；By traditional multiple conventional limiting plates, support, pad etc. some
The function of part is combined, and the function of original multiple parts is embodied on one part, reliable and stable to shaking
Arm axle and camshaft reduce the quantity of engine component while carrying out spacing.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, the end of the rocker arm shaft opens up short slot simultaneously
Formed parallel with rocker arm shaft cross section against end face and axially parallel against plane with rocker arm shaft；The limiting plate
One medial surface is resisted against described against on end face, and the lower surface of the limiting plate one is resisted against described against in plane.So
Leant by the end of a limiting plate one and rocker arm shaft, both limited the axial freedom of rocker arm shaft, again limited rocking arm
The circumferential free degree of axle, the movement or rotation of rocker arm shaft are effectively prevented, it is reliable and stable, reduce the abrasion of rocker arm shaft and cylinder head.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, the lower end of the limiting plate one is to away from institute
The side for stating rocker arm shaft tilts, and the lower end of the limiting plate two tilts to the side away from the bearing.Limiting plate one and spacing
Plate two has the inclination angle in the direction to outside cylinder head, and pressing plate can either form spigot surface, be easy to fast accurate when installation pushes
Installation, and can enough make both produce slight deformation by the extruding of bearing and rocker arm shaft, under the effect of its elastic restoring force, limit
Position plate one is formed with bearing and is interference fitted against plane, limiting plate two with rocker arm shaft, gap is prevented, so to rocker arm shaft
It is more reliable and more stable with the axial limiting of camshaft.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, in the cylinder head have step against
Face, the opposite side of the pressing plate have the limiting plate three of bending extension, and the limiting plate three is towards the limiting plate one and limits
The side of position plate two leans with the step abutment face.By the pressing plate of limiting plate three when itself is installed with preliminary
Spacing and positioning, ensures the accurate of pressing plate installation site, so as to ensure a pair of rocker arm shafts of limiting plate, limiting plate two to cam shaft
To spacing reliability.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, there are four rectangular battle arrays on the pressing plate
The connecting hole of column distribution, connecting bolt is plugged with the connecting hole, the connecting bolt is screwed onto in the cylinder head.Enter
One step, pressing plate is integral type punching press sheet metal component, it is not necessary to through Overheating Treatment；Pressing plate is in frame structure, middle part hollow out, such energy
Enough effective losss of weight, save material, while are fixed by multiple spot, ensure that the intensity and limiting plate one, limiting plate of pressing plate itself
Two and the reliability of limiting plate three.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, the pressing plate has limiting plate one and spacing
The side of plate two is additionally provided with the flange being turned over downwards, and the flange fits with the cylinder head seamed edge.So improve pressing plate peace
The steadiness and position accuracy of dress, it is spacing to rocker arm shaft and camshaft reliable and stable so as to ensure.
In above-mentioned engine in the position limiting structure of rocker arm shaft and camshaft, there is installation cavity in the middle part of the cylinder head,
Cam is installed with the camshaft, the rocker arm shaft is rotatably arranged with rocking arm, and the cam is with rocker arm shaft positioned at described
In installation cavity and both lean；The side of the cylinder head has at least two installing blinds, and opposite side has and the peace
The corresponding installation through-hole of blind hole is filled, the inner of the rocker arm shaft and camshaft is plugged in the installing blind, the rocking arm
The outer end of axle and camshaft is stretched out outside the installation cavity through the installation through-hole；The limiting plate one and limiting plate two are located at institute
State outside installation cavity and close to the installation through-hole.After assembling, the inner of rocker arm shaft and camshaft does not need axial limiting, and outer end leads to
Cross limiting plate one and limiting plate two carries out axial limiting, be not in obscission after the limitation of the both ends free degree.
Compared with prior art, the pressure plate structure of one entirety of setting is passed through in the utility model；By it is traditional it is multiple often
The function of some parts such as rule limiting plate, support, pad is combined, and original multiple zero are embodied on one part
The function of part, the reliable and stable quantity to reducing engine component while rocker arm shaft and spacing camshaft progress.
Brief description of the drawings
Fig. 1 is that this position limiting structure installs and uses structural representation one.
Fig. 2 is that this position limiting structure installs and uses structural representation two.
Fig. 3 is that this position limiting structure installs and uses structural representation three.
In figure, 1, rocker arm shaft；11st, short slot；12nd, against end face；13rd, against plane；2nd, camshaft；21st, cam；3rd, cylinder
Lid；31st, step abutment face；32nd, installation cavity；33rd, installation through-hole；4th, pressing plate；41st, limiting plate one；42nd, limiting plate two；43rd, it is spacing
Plate three；44th, connecting hole；45th, flange；5th, connecting bolt；6th, rocking arm；7th, valve；8th, bearing.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, this engine includes cylinder head 3, and the middle part of cylinder head 3 has installation cavity 32, camshaft
Cam 21 is installed with 2, rocker arm shaft 1 is rotatably arranged with rocking arm 6, and cam 21 is located in installation cavity 32 with rocker arm shaft 1, cam
21 are leant with one end of rocker arm shaft 1, and the other end of rocker arm shaft 1 is connected with valve 7；The side of cylinder head 3 has installing blind,
Opposite side has the installation through-hole 33 corresponding with installing blind, the corresponding installing blind of each rocker arm shaft 1 and an installation
Through hole 33, each camshaft 2 also correspond to an installing blind and an installation through-hole 33, and the inner of rocker arm shaft 1 and camshaft 2 is inserted
It is located in installing blind, the outer end of rocker arm shaft 1 and camshaft 2 is stretched out outside installation cavity 32 through installation through-hole 33；Rocker arm shaft 1 and convex
The parallel interval of wheel shaft 2 is set, and rocker arm shaft 1 is directly plugged in installing blind and installation through-hole 33, and camshaft 2 is to pass through bearing
8 are rotatably plugged in installing blind and installation through-hole 33, and the outer end of camshaft 2 is installed with gear or belt wheel, and passes through skin
Band or chain are connected with bent axle, and crank rotation drives camshaft 2 to rotate, and are driving valve 7 to act by cam 21 and rocking arm 6,
Realize the opening and closing of valve 7；Position limiting structure includes pressing plate 4, and pressing plate 4 is connected on the head 3, specifically, has four on pressing plate 4
The connecting hole 44 of individual rectangular array distribution, connecting bolt 5 is plugged with connecting hole 44, connecting bolt 5 is spirally connected on the head 3
Come realize pressing plate 4 be connected；The side of pressing plate 4 has the limiting plate 1 bent downwards and the limiting plate two bent downwards
42, limiting plate 1 and limiting plate 2 42 are located at outside installation cavity 32 and close to installation through-hole 33；The side of limiting plate 1 against
In the end of rocker arm shaft 1；The side of limiting plate 2 42 and the outer ring side of bearing 8 lean；Pressing plate 4 has the He of limiting plate 1
The side of limiting plate 2 42 is additionally provided with the flange 45 being turned over downwards, and flange 45 fits with the seamed edge of cylinder head 3.
Further, as shown in figure 1, the end of rocker arm shaft 1 opens up short slot 11 and formed parallel with the cross section of rocker arm shaft 1
It is against end face 12 and axially parallel against plane 13 with rocker arm shaft 1；The medial surface of limiting plate 1 abuts against
On end face 12, the lower surface of limiting plate 1 is abutted against in plane 13；The lower end of limiting plate 1 is to away from rocker arm shaft 1
Side tilts, and the lower end of limiting plate 2 42 tilts to the side away from bearing 8.
As shown in Fig. 2 having step abutment face 31 in cylinder head 3, the opposite side of pressing plate 4 has the limiting plate of bending extension
3 43, limiting plate 3 43 leans towards the side of limiting plate 1 and limiting plate 2 42 and step abutment face 31.
In the present embodiment, there is two rocker arm shafts 1 and a camshaft 2, camshaft 2 is located between two rocker arm shafts 1, convex
Wheel shaft 2, which rotates, can drive the rocking arm 6 on two rocker arm shafts 1 to act simultaneously；The loading direction of one of rocker arm shaft 1 utilizes one
The above-mentioned connecting bolt 5 of root carries out spacing, and another rocker arm shaft 1 is carried out spacing by above-mentioned limiting plate 1.For loss of weight,
The outer end of rocker arm shaft 1 is in hollow tubular structure.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although 1, rocker arm shaft has more been used herein；11st, short slot；12nd, against end face；13rd, against plane；2nd, cam
Axle；21st, cam；3rd, cylinder head；31st, step abutment face；32nd, installation cavity；33rd, installation through-hole；4th, pressing plate；41st, limiting plate one；
42nd, limiting plate two；43rd, limiting plate three；44th, connecting hole；45th, flange；5th, connecting bolt；6th, rocking arm；7th, valve；8th, the art such as bearing
Language, but it is not precluded from the possibility using other terms.It is used for the purpose of more easily describing and explaining this using these terms
The essence of utility model；Any additional limitation is construed as all to disagree with the utility model spirit.
Claims (7)
1. the position limiting structure of rocker arm shaft and camshaft in a kind of engine, engine includes cylinder head (3), rocker arm shaft (1) and convex
Wheel shaft (2) is plugged in the cylinder head (3) in the same direction and the camshaft (2) is rotatably connected in the gas by bearing (8)
On cylinder cap (3), it is characterised in that the position limiting structure includes pressing plate (4), and the pressing plate (4) is connected in the cylinder head (3)
On, the side of the pressing plate (4) has the limiting plate one (41) bent downwards and the limiting plate two (42) bent downwards, the limit
The side of position plate one (41) is resisted against the end of the rocker arm shaft (1)；The side of the limiting plate two (42) and the bearing (8)
Outer ring side lean.
2. the position limiting structure of rocker arm shaft and camshaft in engine according to claim 1, it is characterised in that the rocking arm
The end of axle (1) opens up short slot (11) and formed parallel with rocker arm shaft (1) cross section against end face (12) and and rocking arm
Axle (1) is axially parallel against plane (13)；The medial surface of the limiting plate one (41) is resisted against described against end face (12)
On, the lower surface of the limiting plate one (41) is resisted against described against in plane (13).
3. the position limiting structure of rocker arm shaft and camshaft in engine according to claim 2, it is characterised in that described spacing
The lower end of plate one (41) tilts to the side away from the rocker arm shaft (1), and the lower end of the limiting plate two (42) is to away from described
The side of bearing (8) tilts.
4. the position limiting structure of rocker arm shaft and camshaft in the engine according to claim 1 or 2 or 3, it is characterised in that institute
Stating has step abutment face (31) in cylinder head (3), the opposite side of the pressing plate (4) has the limiting plate three of bending extension
(43), the limiting plate three (43) towards the side of the limiting plate one (41) and limiting plate two (42) and the step against
Face (31) leans.
5. the position limiting structure of rocker arm shaft and camshaft in the engine according to claim 1 or 2 or 3, it is characterised in that institute
Stating has the connecting hole (44) of four rectangular array distributions on pressing plate (4), connecting bolt is plugged with the connecting hole (44)
(5), the connecting bolt (5) is screwed onto in the cylinder head (3).
6. the position limiting structure of rocker arm shaft and camshaft in the engine according to claim 1 or 2 or 3, it is characterised in that institute
State side of the pressing plate (4) with limiting plate one (41) and limiting plate two (42) and be additionally provided with the flange (45) being turned over downwards, it is described to turn over
Side (45) fits with the cylinder head (3) seamed edge.
7. the position limiting structure of rocker arm shaft and camshaft in the engine according to claim 1 or 2 or 3, it is characterised in that institute
Stating in the middle part of cylinder head (3) has installation cavity (32), cam (21) is installed with the camshaft (2), the rocker arm shaft (1) can turn
Dynamic is arranged with rocking arm (6), and the cam (21) is located at rocker arm shaft (1) in the installation cavity (32) and both lean；Institute
Stating the side of cylinder head (3) has at least two installing blinds, and there is opposite side the installation corresponding with the installing blind to lead to
The inner of hole (33), the rocker arm shaft (1) and camshaft (2) is plugged in the installing blind, the rocker arm shaft (1) and cam
The installation cavity (32) is stretched out outside in the outer end of axle (2) through the installation through-hole (33)；The limiting plate one (41) and limiting plate
Two (42) are located at the installation cavity (32) outside and close to the installation through-holes (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721236283.5U CN207161165U (en) | 2017-09-25 | 2017-09-25 | The position limiting structure of rocker arm shaft and camshaft in a kind of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721236283.5U CN207161165U (en) | 2017-09-25 | 2017-09-25 | The position limiting structure of rocker arm shaft and camshaft in a kind of engine |
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| Publication Number | Publication Date |
|---|---|
| CN207161165U true CN207161165U (en) | 2018-03-30 |
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| CN201721236283.5U Active CN207161165U (en) | 2017-09-25 | 2017-09-25 | The position limiting structure of rocker arm shaft and camshaft in a kind of engine |
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| CN (1) | CN207161165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611173A (en) * | 2018-07-28 | 2019-04-12 | 重庆隆鑫发动机有限公司 | Engine valve actuating mechanism and engine |
-
2017
- 2017-09-25 CN CN201721236283.5U patent/CN207161165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611173A (en) * | 2018-07-28 | 2019-04-12 | 重庆隆鑫发动机有限公司 | Engine valve actuating mechanism and engine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230106 Address after: 317599 No. 169 Jinping Avenue, Chengdong Street, Wenling City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Yipeng Engine Parts Co.,Ltd. Address before: 317500 Wenling Economic Development Zone, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG QIANJIANG MOTORCYCLE Co.,Ltd. |