CN215444175U - Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle - Google Patents
Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle Download PDFInfo
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- CN215444175U CN215444175U CN202121603267.1U CN202121603267U CN215444175U CN 215444175 U CN215444175 U CN 215444175U CN 202121603267 U CN202121603267 U CN 202121603267U CN 215444175 U CN215444175 U CN 215444175U
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Abstract
The embodiment of the utility model provides a rocker arm shaft with a radial mounting hole, a mounting structure, an engine and a motorcycle, wherein a first shaft is provided with a mounting hole; a second shaft connected to the first shaft and having a cross-sectional area smaller than a cross-sectional area of the first shaft; wherein the mounting hole is located in a radial direction of the first shaft. According to the rocker arm shaft, under the condition that the outer diameter of the rocker arm shaft is not integrally increased, the strength of the wall thickness of the radial hole of the rocker arm shaft is improved, so that the strength of the radial hole of the rocker arm shaft is improved, and the technical problem that the strength of the radial hole of the rocker arm shaft is obviously reduced due to the fact that the wall of the hole is weak due to the fact that the outer diameter of the rocker arm shaft is small when the rocker arm shaft is radially holed in a motorcycle in the prior art is effectively solved.
Description
Technical Field
The utility model relates to the technical field of motorcycles, in particular to a rocker shaft with a radial mounting hole, a mounting structure, an engine and a motorcycle.
Background
Motorcycles, two-wheeled or three-wheeled vehicles driven by gasoline engines and steered by steering front wheels by handlebars, are light, flexible and fast to drive, are widely used for patrol, passenger and cargo transportation and the like, and are also used as sports equipment. In a large direction, motorcycles are classified into street cars, road racing motorcycles, off-road motorcycles, cruise cars, station wagons, and the like.
The rocker arm in a motorcycle is actually a two-armed lever that redirects the force from the push rod, acting on the valve stem end to push open the valve. The ratio of the arm lengths of the two sides of the rocker arm is called as a rocker arm ratio, the rocker arm ratio is about 1.2-1.8, and one end of the long arm is used for pushing the valve. The working surface of the rocker head is generally cylindrical and rolls along the valve stem end surface as the rocker arm oscillates, thus allowing the force between the two to act as far as possible along the valve axis. Lubricating oil channels and oil holes are drilled in the rocker arms. And an adjusting screw for adjusting the valve clearance is screwed into a threaded hole at the end of the short arm of the rocker arm, and a head ball of the screw is in compression joint with a concave ball seat at the top end of the push rod. When the engine of motorcycle igniteed the action, specifically through the cooperation of rocking arm and camshaft, realize the swing of rocking arm, and then drive the valve structure work of rocking arm one end.
Nevertheless this application utility model people is realizing the in-process of the utility model technical scheme of this application embodiment, finds to have following technical problem at least among the prior art:
the motorcycle in the prior art has the technical problem that when the rocker arm shaft is radially perforated, the outer diameter of the rocker arm shaft is small, so that the wall of the perforated part is weak, and the strength of the rocker arm shaft at the radial perforated part is obviously reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a rocker arm shaft with a radial mounting hole, a mounting structure, an engine and a motorcycle, which are used to solve the technical problem that when a rocker arm shaft is radially perforated in a motorcycle in the prior art, the outer diameter of the rocker arm shaft is small, so that the wall of the perforated part is weak, and the strength of the rocker arm shaft at the radial perforated part is obviously reduced.
In order to solve the technical problem, the embodiment of the utility model adopts the following technical scheme:
the embodiment of the utility model provides a rocker shaft with a radial mounting hole, which comprises a first shaft, a second shaft and a third shaft, wherein the first shaft is provided with the mounting hole;
a second shaft connected to the first shaft and having a cross-sectional area smaller than a cross-sectional area of the first shaft;
wherein the mounting hole is located in a radial direction of the first shaft.
Further, the first shaft has an outer diameter D, the second shaft has an outer diameter D,
d is more than or equal to 1.2 xd, wherein D is more than or equal to 7mm and less than or equal to 15 mm.
Further, the minimum wall thickness at the mounting hole is t, wherein t is more than or equal to (D-D)/2.
Further, a tool withdrawal groove is arranged between the first shaft and the second shaft.
An embodiment of the present invention also provides a mounting structure of a rocker arm, including:
the rocker arm shaft as described above;
the rocker arm is rotatably arranged on the second shaft, and the first shaft is connected with one end of the second shaft and is limited by the rocker arm.
Further, the rocker arm includes:
one end of the connecting arm is connected with a gasket of the valve structure;
and the periphery of the sleeve is connected with the other end of the connecting arm, and the inner cavity of the sleeve is sleeved on the second shaft.
Further, the rocker arm further comprises:
the mounting arm is connected with the periphery of the sleeve, and one end of the mounting arm, which is far away from the sleeve, is provided with a mounting groove;
and the rolling piece is rotatably arranged in the mounting groove and is in compression joint with a cam on a cam shaft positioned below the rolling piece.
Furthermore, through holes are formed in the groove walls on the two sides of the mounting groove, a rotating shaft is arranged on the two through holes, and the rolling element is arranged on the rotating shaft.
Embodiments of the present invention also provide an engine including the mounting structure of the rocker arm as described above.
Embodiments of the present invention also provide a motorcycle including an engine as described above.
Compared with the prior art, the embodiment of the utility model has the beneficial effects that:
the embodiment of the utility model provides a rocker arm shaft with a radial mounting hole, which comprises a first shaft, a second shaft and a third shaft, wherein the first shaft is provided with the mounting hole; a second shaft connected to the first shaft and having a cross-sectional area smaller than a cross-sectional area of the first shaft; wherein the mounting hole is located in a radial direction of the first shaft; according to the rocker arm shaft, under the condition that the outer diameter of the rocker arm shaft is not integrally increased, the strength of the wall thickness of the radial hole of the rocker arm shaft is improved, so that the strength of the radial hole of the rocker arm shaft is improved, and the technical problem that the strength of the radial hole of the rocker arm shaft is obviously reduced due to the fact that the wall of the hole is weak due to the fact that the outer diameter of the rocker arm shaft is small when the rocker arm shaft is radially holed in a motorcycle in the prior art is effectively solved.
An embodiment of the present invention also provides a mounting structure of a rocker arm, including: the rocker arm shaft as described above; the rocker arm is rotatably arranged on the second shaft, and the first shaft is connected with one end of the second shaft and is limited by the rocker arm. The technical problem that when the rocker arm shaft is radially perforated in a motorcycle in the prior art, the wall of the perforated part is weak due to the fact that the outer diameter of the rocker arm shaft is small, and the strength of the rocker arm shaft at the radial perforated part is obviously reduced is effectively solved.
The embodiment of the utility model also provides an engine which comprises the rocker arm mounting structure, and the engine can effectively solve the technical problem that when the rocker arm shaft is radially perforated in a motorcycle in the prior art, the outer diameter of the rocker arm shaft is smaller, so that the wall of the perforated part is weaker, and the strength of the rocker arm shaft at the radial perforated part is obviously reduced.
The embodiment of the utility model also provides a motorcycle which comprises the engine, and the motorcycle can effectively solve the technical problem that when the rocker arm shaft is radially holed in the motorcycle in the prior art, the rocker arm shaft has a weak wall at the hole due to a small outer diameter, so that the strength of the rocker arm shaft at the radial hole is obviously reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of a rocker shaft with a radial mounting hole according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a mounting structure of a rocker arm according to an embodiment of the present invention;
fig. 3 is a partial sectional view of a mounting structure of a rocker arm according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a rocker arm shaft with a radial mounting hole provided in accordance with an embodiment of the present invention.
Wherein:
100. a rocker shaft; 101. a first shaft; 102. a second shaft; 103. mounting holes; 210. a connecting arm; 220. a sleeve; 230. a rolling member; 240. mounting an arm; 300. a fastener.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
The present application claims a motorcycle, which may be any type of motorcycle product on the market, and is not specifically limited herein. It will be understood that the motorcycle, in addition to the frame, the electronic control system, the transmission system, the wheels, also comprises an engine, which acts as the heart of the motorcycle, for providing the power necessary for normal running. The engine includes a valve train and a rocker arm 100 structure cooperating therewith. The rocker arm 100 is configured to actuate the valve mechanism and produce work.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a rocker arm shaft with a radial mounting hole according to an embodiment of the present invention;
as shown in fig. 1 and 4, the present embodiment provides a rocker shaft with a radial mounting hole 103, the mounting structure including:
the rocker arm shaft 100 includes:
a first shaft 101, wherein the first shaft 101 is provided with a mounting hole 103; the first shaft 101 is arranged in a first bracket sleeve of the bracket of the first rocker arm shaft 100 in a penetrating way;
a second shaft 102, wherein the second shaft 102 is connected with the first shaft 101, and the cross-sectional area of the second shaft 102 is smaller than that of the first shaft 101; the second shaft 102 is arranged in a second bracket sleeve of the bracket of the rocker arm and the second rocker arm shaft 100 in a penetrating way;
the mounting hole 103 is opened in a radial direction of the first shaft 101.
The first shaft 101 and the first bracket sleeve are assembled together by a bolt, a screw cylinder, a wedge or other fasteners 300 penetrating through the through hole of the first bracket sleeve and the mounting hole 103, so that the first shaft 101 cannot move, the end surface of the first shaft 101 connected with the second shaft 102 limits one side of the rocker arm, and the second bracket sleeve of the bracket of the second rocker arm shaft 100 limits the other side of the rocker arm.
The radial mounting hole 103 of the rocker arm shaft 100 is a bolt fastening hole, the radial mounting hole 103 reduces the strength of the rocker arm shaft 100 because the rocker arm shaft 100 has a thinner wall thickness at the radial opening, and the rocker arm shaft 100 is easy to break at the mounting hole 103. If the diameter of the entire rocker arm shaft 100 is increased, the rocker arms and the corresponding components connected to the rocker arm shaft 100 need to be increased, and the mounting structure of the rocker arms as a whole, even the components of the engine, need to be changed, which results in increased cost and is not favorable for production and application.
In the rocker arm shaft 100 of the embodiment, the rocker arm shaft 100 has two sections of shafts with different outer diameters, namely the first shaft 101 and the second shaft 102, the mounting hole 103 is formed in the outer diameter of the first shaft 101 with a larger shaft diameter, and the strength of the mounting hole 103 of the rocker arm shaft 100 is increased under the condition that the size of the mounting hole 103 is not changed, so that the problems that the strength of the mounting hole 103 is lower and the rocker arm shaft 100 is easy to break due to the fact that the mounting hole 103 is weaker are solved.
Specifically, the wall thickness of the first shaft 101 at the mounting hole 103 is not less than 3.9 mm. The strength of the mounting hole 103 of the rocker arm shaft 100 is maintained, and the problems that the rocker arm shaft 100 is weak at the mounting hole 103, so that the strength of the mounting hole is low and the mounting hole is easy to break are solved. In this embodiment, the wall thickness of the first shaft 101 at the mounting hole 103 is 4mm, as shown in fig. 3 a.
In this embodiment, the outer diameter of the first shaft is D, and the outer diameter of the second shaft is D;
d is more than or equal to 1.2 xd, wherein D is more than or equal to 7mm and less than or equal to 15 mm.
The relation between the outer diameter D of the first shaft and the outer diameter D of the second shaft ensures that the first shaft and the second shaft have enough strength, so that the first shaft and the second shaft can keep more durable work in the working process.
In this embodiment, the minimum wall thickness of the mounting hole is t, where t is greater than or equal to (D-D)/2, and the minimum wall thickness of the mounting hole is determined according to the outer diameter of the first shaft and the outer diameter of the second shaft, so that the strength of the first shaft at the position of the mounting hole can be effectively ensured, and the rocker arm shaft can keep more durable work.
In this embodiment, the diameter of the cross section of the first shaft 101 is 13mm, and the diameter of the cross section of the second shaft 102 is 10 mm; the diameter of the cross-sectional area of the first shaft 101 and the diameter of the cross-sectional area of the second shaft 102 can be adjusted according to actual conditions, and the cross-sectional area of the first shaft 101 is larger than that of the second shaft 102. The diameter size of the mounting hole 103 is 5 mm.
In order to facilitate the processing of the first shaft 101 and the second shaft 102, a tool withdrawal groove is arranged between the first shaft 101 and the second shaft 102.
The rocker arm shaft 100 of the embodiment improves the strength of the wall thickness of the radial hole of the rocker arm shaft 100 without increasing the outer diameter of the rocker arm shaft 100 as a whole, so as to improve the strength of the radial hole of the rocker arm shaft 100, and effectively solve the technical problem that the strength of the radial hole of the rocker arm shaft 100 is obviously reduced because the outer diameter of the rocker arm shaft 100 is smaller when the rocker arm shaft 100 is radially holed in a motorcycle in the prior art.
As shown in fig. 2 and 3, an embodiment of the present application also provides a mounting structure of a rocker arm, the mounting structure including:
the rocker arm shaft 100 as described above;
the rocker arm is rotatably arranged on the second shaft 102, and one end of the first shaft 101, which is connected with the second shaft 102, is limited to the rocker arm.
The first shaft 101 and the first support sleeve are assembled together through the locking piece, the first shaft 101 and the first support sleeve are disassembled through disassembling the locking piece, so that the rocker arm shaft 100 can move axially, the rocker arm is not limited any more by the first shaft 101, the rocker arm can move axially, the compression joint of the rocker arm on the gasket is removed, and the gasket is convenient to replace.
Specifically, the rocker arm includes:
a connecting arm 210, wherein one end of the connecting arm 210 is connected with a gasket of a valve structure;
and a sleeve 220, the periphery of the sleeve 220 is connected with the other end of the connecting arm 210, and the inner cavity of the sleeve 220 is sleeved on the second shaft 102.
The end face of the first shaft 101 limits one side face of the sleeve 220, and the second support sleeve limits the other side face of the sleeve 220.
Further, the rocker arm further comprises:
the mounting arm 240 is connected with the periphery of the sleeve 220, and one end of the mounting arm 240, which is far away from the sleeve 220, is provided with a mounting groove;
and the rolling member 230 is rotatably arranged in the mounting groove and is in pressure connection with a cam on the camshaft positioned below the rolling member 230.
The mounting groove is provided in the middle of the end of the mounting arm 240, specifically, through holes are provided on the groove walls of both sides of the mounting groove, a rotating shaft is provided on the two through holes, the rolling member 230 is mounted on the rotating shaft, bearings may be provided on the two through holes in order to further improve the effect of the rolling member 230, and the rotating shaft is mounted on the bearings.
The rocker shaft 100 is located between the mounting arm 240 and the connecting arm 210, the mounting arm 240 and the connecting arm 210 form a lever, the rocker shaft 100 serves as a fulcrum between the mounting arm 240 and the connecting arm 210, a cam on a cam shaft is located below the rolling member 230, the cam presses the rolling member 230 upwards, the rolling member 230 transmits the pressing force to a gasket of a corresponding valve structure through the connecting arm 210, and therefore the connecting arm 210 is pressed on the gasket of the corresponding valve structure.
The embodiment provides the mounting structure, and effectively solves the technical problem that when the rocker arm shaft 100 is radially perforated in the motorcycle in the prior art, the outer diameter of the rocker arm shaft 100 is smaller, so that the wall of the perforated part is weaker, and the strength of the rocker arm shaft 100 at the radial perforated part is obviously reduced.
Embodiments of the present invention also provide an engine including the rocker arm mounting structure as described above, and the engine including the rocker arm mounting structure as described above, which can effectively solve the technical problem that when a rocker arm shaft 100 is radially perforated in a motorcycle in the prior art, the wall of the perforated portion is weak due to a small outer diameter of the rocker arm shaft 100, which leads to a significant decrease in the strength of the rocker arm shaft 100 at the radial perforated portion.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Embodiments of the present invention further provide a motorcycle including the engine as described above, which can effectively solve the technical problem that when the rocker arm shaft 100 is radially holed in a motorcycle of the prior art, the rocker arm shaft 100 has a weak wall at the hole due to a small outer diameter of the rocker arm shaft 100, which results in a significant decrease in the strength of the rocker arm shaft 100 at the radial hole.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A rocker shaft with a radial mounting hole, the rocker shaft comprising:
a first shaft having a mounting hole thereon;
a second shaft connected to the first shaft and having a cross-sectional area smaller than a cross-sectional area of the first shaft;
wherein the mounting hole is located in a radial direction of the first shaft.
2. The rocker shaft with radial mounting holes of claim 1, wherein: the outer diameter of the first shaft is D, and the outer diameter of the second shaft is D;
d is more than or equal to 1.2 xd, wherein D is more than or equal to 7mm and less than or equal to 15 mm.
3. The rocker shaft with radial mounting holes of claim 2, wherein:
the minimum wall thickness of the mounting hole is t, wherein t is not less than (D-D)/2.
4. The rocker shaft with radial mounting holes of claim 1,
a tool withdrawal groove is arranged between the first shaft and the second shaft.
5. A mounting structure of a rocker arm, characterized in that the mounting structure comprises:
the rocker shaft of any of claims 1-3;
the rocker arm is rotatably arranged on the second shaft, and the first shaft is connected with one end of the second shaft and is limited by the rocker arm.
6. The mounting structure of a rocker arm according to claim 5, comprising:
one end of the connecting arm is connected with a gasket of the valve structure;
and the periphery of the sleeve is connected with the other end of the connecting arm, and the inner cavity of the sleeve is sleeved on the second shaft.
7. The mounting structure of a rocker arm according to claim 6, further comprising:
the mounting arm is connected with the periphery of the sleeve, and one end of the mounting arm, which is far away from the sleeve, is provided with a mounting groove;
and the rolling piece is rotatably arranged in the mounting groove and is in compression joint with a cam on a cam shaft positioned below the rolling piece.
8. The mounting structure of a rocker arm according to claim 7,
through holes are formed in the groove walls on the two sides of the mounting groove, a rotating shaft is arranged on the two through holes, and the rolling element is arranged on the rotating shaft.
9. An engine characterized by the mounting structure of the rocker arm as set forth in any one of claims 5 to 8.
10. A motorcycle characterized by comprising the engine as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603267.1U CN215444175U (en) | 2021-07-14 | 2021-07-14 | Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603267.1U CN215444175U (en) | 2021-07-14 | 2021-07-14 | Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle |
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| Publication Number | Publication Date |
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| CN215444175U true CN215444175U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121603267.1U Active CN215444175U (en) | 2021-07-14 | 2021-07-14 | Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464234A (en) * | 2021-07-14 | 2021-10-01 | 江门市大长江集团有限公司 | Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle |
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2021
- 2021-07-14 CN CN202121603267.1U patent/CN215444175U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464234A (en) * | 2021-07-14 | 2021-10-01 | 江门市大长江集团有限公司 | Rocker shaft with radial mounting hole, mounting structure, engine and motorcycle |
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