CN218325041U - Improved structure of cylinder head lubricating oil path - Google Patents
Improved structure of cylinder head lubricating oil path Download PDFInfo
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- CN218325041U CN218325041U CN202222514733.XU CN202222514733U CN218325041U CN 218325041 U CN218325041 U CN 218325041U CN 202222514733 U CN202222514733 U CN 202222514733U CN 218325041 U CN218325041 U CN 218325041U
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- oil
- cylinder head
- hole
- rocker shaft
- rocking arm
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Abstract
The utility model relates to an improvement structure of cylinder head lubricant circuit, including a cylinder head main part, a rocking arm axle and a rocking arm, an oil feed hole has been seted up to the cylinder head main part and has been reached including a rocking arm axle supporting part, and the rocking arm axle supports in the rocking arm axle supporting part, and the rocking arm axle has seted up oilhole and a rocking arm axle oil outlet in the rocking arm axle, and the oil feed hole communicates to oilhole in the rocking arm axle, and the rocking arm is including a pivot portion that has an inner hole, and the rocking arm is epaxial in the interior hole pivot of rocking arm, and a side end face of pivot portion is concave to be equipped with an oil out and lacks the groove, and the oilhole passes through rocking arm axle oil outlet intercommunication oil out and lacks the groove in the rocking arm axle. Therefore, the oil outlet hole of the rocker shaft is arranged corresponding to the oil outlet notch, and the arc angle relative to the arc length of the oil outlet notch is larger than the rotation angle of the rocker, so that the consistent oil spraying direction of the lubricating oil can be maintained when the rocker rotates in a reciprocating manner. In addition, the rocker arm shaft can continuously spray oil without additionally machining a ring groove and additionally machining an oil outlet hole, so that the machining cost is effectively reduced.
Description
Technical Field
The present invention relates to an improved structure of a cylinder head lubrication circuit, and more particularly to an improved structure of a cylinder head lubrication circuit for a power vehicle.
Background
As shown in fig. 1 to 4, there are respectively a perspective view of a conventional cylinder head lubricating oil passage structure, a partially enlarged view of fig. 1, a perspective view of a conventional intake rocker arm, and a perspective view of a conventional intake rocker arm shaft. The present invention is a conventional cylinder head lubricating oil path structure, which is disposed in a cylinder head assembly 9 and mainly includes a cylinder head main body 92, an intake rocker shaft 931 and an intake rocker arm 941.
The cylinder head body 92 is provided with an oil supply hole a ', the air intake rocker shaft 931 is fixedly arranged in the cylinder head body 92, the air intake rocker shaft 931 is provided with a rocker shaft inner oil hole c', a rocker shaft annular groove e 'and a rocker shaft oil outlet hole d' which communicates the rocker shaft inner oil hole c 'with the rocker shaft annular groove e', the oil supply hole a 'is communicated with the rocker shaft inner oil hole c' through a processing oil hole b ', the air intake rocker arm 941 is pivotally arranged on the air intake rocker shaft 931 and is provided with an air intake rocker arm oil outlet hole f', and the rocker shaft inner oil hole c 'is communicated with the air intake rocker arm oil outlet hole f' through the rocker shaft oil outlet hole d 'and the rocker shaft annular groove e'. Through the structure, the lubricating oil L of the cylinder head lubricating oil circuit can sequentially flow through the oil supply hole a ', the machining oil hole b', the rocker arm shaft inner oil hole c ', the rocker arm shaft oil outlet hole d' and the rocker arm shaft annular groove e 'and is subjected to oil injection operation through the air inlet rocker arm oil outlet hole f'.
However, in this cylinder head lubricating oil path, in addition to the need to provide the intake rocker arm 941 with the oil outlet hole f ' for the lubricating oil L to spray out for lubrication, since the rocker arm shaft oil outlet hole d ' cannot be precisely aligned with the intake rocker arm oil outlet hole f ' when the intake rocker arm 941 reciprocates, an additional process is required to form the ring groove e ' in the intake rocker arm shaft 931 to keep the lubricating oil L continuously sprayed, so that both the intake rocker arm shaft 931 and the intake rocker arm 941 need to provide oil holes, and the intake rocker arm shaft 931 needs to additionally form the ring groove e ', resulting in high processing cost.
Fig. 5 and 6 are partial sectional views of a conventional cylinder head lubricating oil passage structure when an intake valve is closed and opened, respectively. As shown in fig. 5, when the intake cam 961 on the camshaft 96 does not push the intake rocker arms 941, the intake valves 951 are kept in a closed state without being urged by the intake rocker arms 941, and at this time, the rocker shaft oil outlet holes d ' of the intake rocker shafts 931 guide the lubricating oil L to the intake rocker arm oil outlet holes f ' through the rocker shaft annular grooves e ' to be ejected. In contrast, as shown in fig. 6, when the intake cam 961 on the cam shaft 96 pushes the intake rocker arm 941, the intake rocker arm 941 pivots relative to the intake rocker shaft 931, and the intake valve 951 is in an open state by being urged by the intake rocker arm 941, and at this time, the rocker shaft oil outlet d 'of the intake rocker shaft 931 guides the lubricant L to the intake rocker arm oil outlet f' through the rocker shaft annular groove e ', and the lubricant L is ejected from the intake rocker arm oil outlet f' due to the reciprocating rotational motion of the intake rocker arm 941, so that the oil ejection trajectory is changed, and the oil ejection directions of the two parts are different, as is apparent from fig. 5 and 6, and a fixed oil ejection angle cannot be maintained.
The inventor of the present invention is therefore concerned with the spirit of the present invention, and needs to find an improved structure of the cylinder head lubricating oil passage which can solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an improvement structure of cylinder head lubricant circuit is being provided, lacks the groove through being equipped with one at the rocking arm is concave, and rocking arm axle delivery port should go out oil and lack the groove and set up, so can maintain lubricating oil spout direction unanimous when rocking arm reciprocating motion. In addition, the rocker arm shaft can continuously spray oil without additionally machining a ring groove and additionally machining an oil outlet hole, so that the machining cost is effectively reduced.
In order to achieve the above object, the utility model discloses an improvement structure of cylinder head lubricant circuit sets up in a cylinder head assembly, including a cylinder head main part, a rocking arm axle and a rocking arm, an oil feed hole has been seted up to the cylinder head main part, the cylinder head main part is including a rocking arm axle supporting part, the rocking arm axle supports in the rocking arm axle supporting part, the rocking arm axle has seted up oilhole and a rocking arm axle oil outlet in the rocking arm axle, the oil feed hole communicates to oilhole in the rocking arm axle, the rocking arm is including a pivot portion that has a hole, the rocking arm is epaxial in the downthehole pivot is located to the rocking arm, a side end face of pivot portion is concave to be equipped with an oil out and lacks the groove, oilhole communicates oil out and lacks the groove through the rocking arm axle oil outlet in the rocking arm axle.
The oil supply hole can be communicated with the oil hole in the rocker shaft through a processing oil hole. Therefore, if the oil supply hole is not directly communicated with the oil hole in the rocker arm shaft, a lubricating oil path can be formed by processing the oil hole.
The oil outlet notch groove can be concavely provided with a specific depth from the side end surface along the axial direction of the inner hole, and the side end surface is adjacent to the rocker shaft supporting part, so that the lubricating oil can be guided to a single oil injection direction between the oil outlet notch groove and the rocker shaft supporting part.
The lubricating oil of the cylinder head lubricating oil circuit can sequentially flow through the oil supply hole, the machining oil hole, the rocker shaft inner oil hole and the rocker shaft oil outlet hole, and the lubricating oil is guided to a single oil injection direction between the oil outlet notch and the rocker shaft supporting part. Therefore, the continuous oil injection of the cylinder head lubricating oil path can be maintained, and the consistent oil injection direction can be maintained when the rocker arm rotates in a reciprocating manner.
The arc angle of the arc length of the oil outlet notch groove relative to the axis of the rocker shaft can be larger than the rotation angle of the rocker arm in reciprocating pivoting. Therefore, no matter the rotation angle of the rocker arm reciprocating pivoting, the oil outlet hole of the rocker arm shaft can correspond to the oil outlet notch groove concavely arranged on the rocker arm, so that the lubricating oil can be guided to a single oil injection direction between the oil outlet notch groove and the rocker arm shaft supporting part.
The oil-out notch can be formed by casting or forging. From this, the rocking arm need not additionally set up the rocking arm oil outlet, but by casting or forging the rocking arm structure of the utensil oil outlet scarce groove of integral type, effectively reduces the processing cost.
The rocker arm can be an air inlet rocker arm, and the rocker arm shaft can be an air inlet rocker arm shaft; alternatively, the rocker arm may be an exhaust rocker arm and the rocker shaft may be an exhaust rocker shaft. Therefore, the improved structure of the cylinder head lubricating oil circuit of the utility model can be arranged on the air inlet rocker arm and the air inlet rocker arm shaft, or arranged on the exhaust rocker arm and the exhaust rocker arm shaft, and is not limited in a single air inlet or exhaust structure.
The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the claimed invention. Other objects and advantages of the present invention will be apparent from the following detailed description and the accompanying drawings.
Drawings
Fig. 1 is a perspective view of a conventional cylinder head lubricating oil passage structure.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a perspective view of a conventional intake rocker arm.
Fig. 4 is a perspective view of a conventional intake rocker shaft.
Fig. 5 is a partial sectional view of a conventional cylinder head lubricating oil passage structure when an intake valve is closed.
Fig. 6 is a partial sectional view of a conventional cylinder head lubricating oil passage structure when an intake valve is opened.
Fig. 7 is a perspective view of an improved structure of a cylinder head lubricating oil passage according to a preferred embodiment of the present invention.
Fig. 8 is a partially enlarged view of fig. 7.
Fig. 9 is a partial enlarged view of another view of the improved structure of the cylinder head lubricating oil passage according to a preferred embodiment of the present invention.
Fig. 10 is a partial sectional view of another perspective of an improved structure of a cylinder head lubricating oil passage according to a preferred embodiment of the present invention.
Fig. 11 is a perspective view of an intake rocker arm and an intake rocker arm shaft according to a preferred embodiment of the present invention.
Fig. 12 is a perspective view of an intake rocker arm according to a preferred embodiment of the present invention.
Fig. 13 is a side view of an intake rocker arm in accordance with a preferred embodiment of the present invention.
Fig. 14 is a partial cross-sectional view of an improved structure of a cylinder head lubricating oil passage structure according to a preferred embodiment of the present invention when an intake valve is closed.
Fig. 15 is a partial cross-sectional view of an improved structure of a cylinder head lubricating oil passage structure according to a preferred embodiment of the present invention when an intake valve is opened.
Description of the main element symbols:
1. cylinder head assembly
2. Cylinder head main body
30. Rocker shaft support part
31. Intake rocker shaft
32. Exhaust rocker shaft
41. Air inlet rocker arm
410. Inner bore
411. Pivoting part
412. Side end face
42. Exhaust rocker arm
51. Air inlet valve
52. Exhaust valve
6. Cam shaft
61. Air inlet cam
9. Cylinder head assembly
92. Cylinder head body
931. Intake rocker shaft
941. Air inlet rocker arm
951. Air inlet valve
96. Cam shaft
961. Air inlet cam
a oil supply hole
a' oil supply hole
b processing oil hole
b' machining oil hole
c rocker arm shaft inner oil hole
c' rocker shaft inner oil hole
d rocker shaft oil outlet
d' rocker shaft oil outlet
e oil outlet groove
E' rocker shaft ring groove
f' air inlet rocker arm oil outlet
Direction of C axis
D specific depth
L lubricating oil
Angle of theta arc
Detailed Description
Fig. 7 to 10 are a perspective view, a partial enlarged view of fig. 7, a partial enlarged view of another view, and a partial sectional view of another view, respectively, illustrating an improved structure of a cylinder head lubricating oil passage according to a preferred embodiment of the present invention. The improved structure of the cylinder head lubricating oil path is shown in the drawing, and is arranged in a cylinder head assembly 1, and mainly comprises a cylinder head main body 2, an intake rocker shaft 31 and an intake rocker arm 41, in this embodiment, the improved structure of the cylinder head lubricating oil path is arranged on the intake rocker shaft 31 and the intake rocker arm 41 for driving an intake valve 51 (shown in fig. 14) to open or close, but not limited thereto, and the improved structure of the cylinder head lubricating oil path may also be arranged on an exhaust rocker shaft 32 and an exhaust rocker arm 42 (shown in fig. 14) for driving an exhaust valve 52 (shown in fig. 14) to open or close.
In the present embodiment, the cylinder head body 2 is provided with an oil supply hole a, which is a bolt hole at the same time, but the invention is not limited thereto, and the oil supply hole a may be provided independently. The cylinder head body 2 includes a rocker shaft supporting portion 30, the intake rocker shaft 31 is supported on the rocker shaft supporting portion 30, the intake rocker shaft 31 is provided with an oil hole c in the rocker shaft and an oil outlet hole d in the rocker shaft, the oil supply hole a is communicated with the oil hole c in the rocker shaft through a processing oil hole b, the intake rocker arm 41 includes a pivot portion 411 with an inner hole 410, the intake rocker arm 41 is pivoted on the intake rocker shaft 31 through the inner hole 410, one side end surface 412 of the pivot portion 411 is concavely provided with an oil outlet notch e, the oil outlet hole d in the rocker shaft corresponds to the oil outlet notch e, so the oil hole c in the rocker shaft is communicated with the oil outlet notch e through the oil outlet hole d in the rocker shaft. With the above structure, the lubricating oil L in the cylinder head lubricating oil path can sequentially flow through the oil supply hole a, the machining oil hole b, the rocker arm shaft inner oil hole c and the rocker arm shaft oil outlet hole d, and is guided to a single oil injection direction between the oil outlet notch e and the rocker arm shaft supporting portion 30, wherein the single oil injection direction is towards moving parts such as the camshaft 6, and the effects of lubricating and reducing the abrasion of parts are achieved.
Fig. 11 to 13 are a perspective view, a perspective view and a side view of an intake rocker arm and an intake rocker arm shaft, respectively, according to a preferred embodiment of the present invention. As shown in the figure, the oil that the rocking arm 41 that admits air seted up lacks groove e and is taken shape by casting or forging, the utility model discloses need not additionally set up in the rocking arm 41 that admits air as prior art the rocking arm oil outlet, effectively reduce the processing cost. The oil outlet groove e is recessed from the side end surface 412 by a predetermined depth D in the axial direction C of the inner bore 410, and the side end surface 412 is adjacent to the rocker shaft support 30. In addition, the arc length of the oil-out notch e relative to the arc angle θ of the axis of the intake rocker shaft 31 is greater than the rotation angle (not shown) of the reciprocating pivoting of the intake rocker arm 41, that is, no matter what the rotation angle of the reciprocating pivoting of the intake rocker arm 41 is, the rocker shaft oil outlet d can correspondingly deliver the lubricating oil L to the oil-out notch e concavely formed in the intake rocker arm 41, so that the intake rocker shaft 31 does not need to additionally machine a circular groove to continuously inject oil as in the prior art, thereby effectively reducing the machining cost. Furthermore, the utility model discloses can all be by the oil play lack groove e and rocking arm axle supporting part 30 within a definite time with lubricating oil L guide single oil spout direction, and can not interfere lubricating oil L's oil spout oil beam.
Fig. 14 and 15 are partial sectional views of an improved structure of a cylinder head lubricating oil passage structure according to a preferred embodiment of the present invention, respectively, when an intake valve is closed and when the intake valve is opened. As shown in fig. 14, when the intake cam 61 on the camshaft 6 does not push the intake rocker arm 41, the intake valve 51 is not biased by the intake rocker arm 41 and remains in the closed state, and the rocker arm oil outlet d of the intake rocker arm shaft 31 is correspondingly communicated with the oil outlet notch e recessed in the intake rocker arm 41, so that the lubricating oil L can be guided to a single oil injection direction toward the camshaft 6. In contrast, as shown in fig. 15, when the intake cam 61 on the camshaft 6 pushes the intake rocker arm 41, the intake rocker arm 41 pivots relative to the intake rocker shaft 31, the intake valve 51 is forced by the intake rocker arm 41 to be in an open state, and the rocker shaft oil outlet d of the intake rocker shaft 31 can still correspondingly communicate with the oil outlet notch e recessed in the intake rocker arm 41, so that the lubricating oil L can be guided to a single oil injection direction toward the camshaft 6.
The above-described embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should not be limited to the above-described embodiments, but should be defined only by the claims of the present application.
Claims (8)
1. An improved structure of a cylinder head lubricating oil circuit is arranged in a cylinder head assembly and is characterized by comprising a cylinder head main body, a rocker shaft and a rocker arm, wherein an oil supply hole is formed in the cylinder head main body, the cylinder head main body comprises a rocker shaft supporting part, the rocker shaft is supported on the rocker shaft supporting part, an oil hole in the rocker shaft and an oil outlet hole in the rocker shaft are formed in the rocker shaft, the oil supply hole is communicated to the oil hole in the rocker shaft, the rocker arm comprises a pivoting part with an inner hole, the rocker arm is pivoted on the rocker shaft through the inner hole, an oil outlet notch is concavely formed in one side end face of the pivoting part, and the oil hole in the rocker shaft is communicated with the oil outlet notch through the oil outlet hole in the rocker shaft.
2. The improved structure of cylinder head lubricating oil circuit as claimed in claim 1, characterized in that the oil supply hole communicates with the rocker shaft inner oil hole via a machining oil hole.
3. The improved structure of the cylinder head lubricating oil passage as claimed in claim 1, wherein the oil outlet notch is recessed from the side end surface adjacent to the rocker shaft support portion by a specific depth along the axial direction of the inner bore.
4. The improved structure of cylinder head lubricating oil circuit as claimed in claim 2, characterized in that the lubricating oil of the cylinder head lubricating oil circuit flows through the oil supply hole, the machining oil hole, the rocker shaft inner oil hole and the rocker shaft oil outlet hole in sequence, and the lubricating oil is guided to a single oil injection direction between the oil outlet notch and the rocker shaft supporting portion.
5. The improved structure of cylinder head lubricating oil circuit as claimed in claim 1, characterized in that the arc angle of the arc length of the oil-out notch relative to the rocker shaft axis is larger than the rotation angle of the reciprocating pivoting of the rocker arm.
6. The improved structure of cylinder head lubricating oil passage as claimed in claim 1, characterized in that the oil outlet groove is formed by casting or forging.
7. The improved cylinder head lubrication circuit structure of claim 1, wherein said rocker arm is an intake rocker arm and said rocker shaft is an intake rocker shaft.
8. The improved cylinder head lubrication circuit structure as claimed in claim 1, wherein said rocker arm is an exhaust rocker arm and said rocker shaft is an exhaust rocker shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514733.XU CN218325041U (en) | 2022-09-22 | 2022-09-22 | Improved structure of cylinder head lubricating oil path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514733.XU CN218325041U (en) | 2022-09-22 | 2022-09-22 | Improved structure of cylinder head lubricating oil path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218325041U true CN218325041U (en) | 2023-01-17 |
Family
ID=84819034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222514733.XU Active CN218325041U (en) | 2022-09-22 | 2022-09-22 | Improved structure of cylinder head lubricating oil path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325041U (en) |
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2022
- 2022-09-22 CN CN202222514733.XU patent/CN218325041U/en active Active
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