CN214533102U

CN214533102U - Motorcycle camshaft

Info

Publication number: CN214533102U
Application number: CN202120769535.0U
Authority: CN
Inventors: 张宏; 刘祖明; 杨顺智; 刘彬; 杨七勇
Original assignee: Yuhuan Ruikai Power Manufacturing Co ltd
Current assignee: Yuhuan Ruikai Power Manufacturing Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-10-29
Anticipated expiration: 2031-04-15

Abstract

The utility model provides a motorcycle camshaft belongs to motorcycle spare part technical field. It has solved current camshaft body manufacturing as an organic whole, lubricated relatively poor problem of effect. This motorcycle camshaft includes the camshaft axis body, and the both ends of camshaft axis body have the collar portion respectively, are provided with a plurality of axial interval distribution's cam on the camshaft axis body between the collar portion at both ends, all are provided with lubricating structure on the collar portion at both ends and every cam. The utility model has the advantages of reasonable design, simply, set up the oil duct at the camshaft axis body and set up lubricating hole two on axle collar portion sets up lubricating hole one, the cam, to cam, axle collar portion comprehensive lubrication, lubricated effect is better, avoids long-term use wearing and tearing, long service life.

Description

Motorcycle camshaft

Technical Field

The utility model belongs to the technical field of motorcycle spare part, a motorcycle camshaft is related to.

Background

The camshaft is a component in a piston engine. The camshaft functions to control the opening and closing action of the valves. For example, chinese patent literature discloses a novel motorcycle camshaft [ application number: 201520993077.3, respectively; authorization notice number: CN205330752U ], which comprises a cam, a wheel journal, a cam shaft and a cam shaft oil seal, wherein a timing toothed belt wheel is arranged on one side of the cam shaft oil seal, the axle journal is arranged on one side of the cam, and a rolling bearing is arranged on the other side of the cam.

The bearing is manufactured integrally and can bear larger torque; but the camshaft is not provided with a lubricating structure aiming at the cam and the wheel neck; when the cam is used for a long time, the lubrication is difficult, and particularly, the cam is easy to generate abrasion, scratch, tear and early failure when working under high fatigue contact stress for a long time, and the service life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, lubricated effectual, long service life's motorcycle camshaft.

The purpose of the utility model can be realized by the following technical proposal: the motorcycle camshaft comprises a camshaft shaft body, wherein shaft ring parts are arranged at two ends of the camshaft shaft body respectively, a plurality of cams which are distributed at intervals in the axial direction are arranged on the camshaft shaft body between the shaft ring parts at the two ends, a lubricating structure is arranged on each shaft ring part at the two ends and each cam, the lubricating structure comprises a main oil duct which is axially arranged on the camshaft shaft body, the main oil duct is located at the eccentric position of the camshaft shaft body, one end of the main oil duct penetrates through the shaft ring part at one end of the camshaft shaft body, oil wetting holes I which are radially arranged and are vertically communicated with the main oil duct are arranged on the shaft ring parts at the two ends respectively, and oil wetting holes II which are radially arranged and are vertically communicated with the main oil duct are arranged on each cam respectively.

This motorcycle camshaft mainly sets up lubricating hole two on axle collar portion sets up lubricating hole one, the cam, lubricating hole one, lubricating hole two are all with the oil duct intercommunication, can be to the whole comprehensive lubrication of camshaft axis body through lubricating hole one, lubricating hole two, and lubricated effect is better, avoids wearing and tearing, scratch, tears long service life.

In the above motorcycle camshaft, the cam includes an annular portion coaxial with the camshaft body, and a cam abutting portion protruding radially away from the annular portion, and the main oil gallery is located in the annular portion of the camshaft body; the second lubricating holes are formed in the annular part of the cam of the camshaft shaft body, and the orifices of the second lubricating holes are arranged in the same axial direction and are in a straight line shape. The same lubrication position of each cam leads to better lubrication effect of each cam and can effectively prevent the cam from being worn.

In the above motorcycle camshaft, three cams are axially and uniformly distributed on the camshaft body at intervals, the axial distance of the middle cam is greater than the axial distances of the cams at two ends, and the cams at two ends are symmetrically distributed relative to the middle cam. In actual manufacturing, the axial dimension of the middle cam is twice of the axial dimension of the cams at two ends, and two oil holes of the middle cam are symmetrically distributed, so that the aim of stably operating and lubricating the middle cam is fulfilled.

In the above-described motorcycle camshaft, the orifices of the first oil feed hole and the orifices of the second oil feed hole are arranged in the same direction. The purpose of setting up like this is that the lubricated effect of messenger's collar portion is better, difficult wearing and tearing.

In the above motorcycle camshaft, the main oil gallery penetrates through the shaft ring part at one end of the camshaft shaft body and is provided with the annular groove, the groove bottom of the annular groove is provided with the third lubricating hole, and the direction of the orifice of the third lubricating hole and the direction of the orifice of the second lubricating hole are the same. The purpose of this arrangement is to ensure the lubrication effectiveness of the collar portion with the annular groove and to reduce the assembly wear.

In the above-mentioned motorcycle camshaft, the camshaft shaft body is further provided with an auxiliary oil duct, one end of the auxiliary oil duct penetrates through the shaft ring part at one end in the same direction as the main oil duct, the other end of the auxiliary oil duct extends to the position of the middle cam, the middle cam is provided with a pin hole communicated with the auxiliary oil duct, a fourth lubricating oil hole communicated with the auxiliary oil duct is arranged between the shaft ring part penetrated through by the auxiliary oil duct and the adjacent cam, and the directions of the orifice of the fourth lubricating oil hole and the orifice of the pin hole are the same. The purpose that sets up like this can guarantee the holistic lubricity of camshaft axis body, and the integral lubrication effect is better, prevents effective wearing and tearing, long service life.

Compared with the prior art, the motorcycle camshaft has the advantages that: structural design is reasonable, simple, sets up the oil duct at the camshaft axis body and sets up lubricating hole two on axle collar portion sets up lubricating hole one, the cam, to cam, axle collar portion comprehensive lubrication, lubricated effect is better, avoids long-term use wearing and tearing, long service life.

Drawings

Fig. 1 is a schematic perspective view of a camshaft of a motorcycle.

FIG. 2 is a schematic sectional view of the camshaft of the motorcycle.

In the figure, 1, a camshaft body; 2. a collar portion; 3. a cam; 4. a main oil gallery; 5. a first lubricating hole; 6. a second lubricating hole; 7. an annular portion; 8. a cam abutting portion; 9. an annular groove; 10. a third lubricating hole; 11. a secondary oil gallery; 12. a pin hole; 13. and an oil lubrication hole IV.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the motorcycle cam 3 shaft mainly comprises a camshaft shaft body 1, shaft ring parts 2 are respectively arranged at two ends of the camshaft shaft body 1, a plurality of cams 3 which are axially distributed at intervals are arranged on the camshaft shaft body 1 between the shaft ring parts 2 at the two ends, and lubricating structures are arranged on the shaft ring parts 2 at the two ends and each cam 3; in actual manufacturing, the specific implementation of the lubricating structure is as follows: have on the camshaft axis body 1 to be the main oil gallery 4 that the axial set up, main oil gallery 4 is located camshaft axis body 1's eccentric position, and the one end of this main oil gallery 4 runs through the collar portion 2 of one of them one end of camshaft axis body 1, has respectively on the collar portion 2 at both ends to be and radially be provided with lubricating hole one 5, and this lubricating hole one 5 and main oil gallery 4 communicate perpendicularly, has lubricating hole two 6, and lubricating hole two 6 and the main oil gallery 4 that radially set up on every cam 3 respectively and communicate perpendicularly.

During actual manufacturing, the cam 3 mainly comprises an annular part 7 which is coaxial with the camshaft body 1 and a cam abutting part 8 which is far away from the annular part 7 and protrudes outwards in the radial direction, and the main oil gallery 4 is positioned in the annular part 7 of the camshaft body 1; the second lubricating holes 6 are all formed in the annular part 7 of the cam 3 of the camshaft shaft body 1, and the orifices of the second lubricating holes 6 are arranged in the same axial direction and are in a straight line shape; the orifices of the first lubricating hole 5 and the orifices of the second lubricating hole 6 are arranged in the same direction.

During actual manufacturing, three cams 3 are axially and uniformly distributed on the camshaft shaft body 1 at intervals, the axial distance of the middle cam 3 is greater than that of the cams 3 at the two ends, and the cams 3 at the two ends are symmetrically distributed relative to the middle cam 3; the main oil gallery 4 penetrates through the shaft part 2 at one end of the camshaft shaft body 1 and is provided with an annular groove 9, the bottom of the annular groove 9 is provided with a third lubricating hole 10, and the direction of the orifice of the third lubricating hole 10 is the same as that of the orifice of the second lubricating hole 6.

During actual manufacturing, the camshaft shaft body 1 is further provided with an auxiliary oil gallery 11, one end of the auxiliary oil gallery 11 penetrates through the shaft ring part 2 at one end in the same direction as the main oil gallery 4, the other end of the auxiliary oil gallery 11 extends to the position of the middle cam 3, the middle cam 3 is provided with a pin hole 12 communicated with the auxiliary oil gallery 11, a lubricating oil hole four 13 communicated with the auxiliary oil gallery 11 is arranged between the shaft ring part 2 penetrated by the auxiliary oil gallery 11 and the adjacent cam 3, and the directions of the hole opening of the lubricating oil hole four 13 and the hole opening of the pin hole 12 are the same.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A motorcycle camshaft comprises a camshaft body (1), wherein shaft ring parts (2) are respectively arranged at two ends of the camshaft body (1), a plurality of cams (3) are axially distributed at intervals on the camshaft body (1) between the shaft ring parts (2) at the two ends, and the motorcycle camshaft is characterized in that the shaft ring parts (2) at the two ends and each cam (3) are respectively provided with a lubricating structure, the lubricating structure comprises a main oil duct (4) which is axially arranged on the camshaft body (1), the main oil duct (4) is positioned at the eccentric position of the camshaft body (1), one end of the main oil duct (4) penetrates through the shaft ring part (2) at one end of the camshaft body (1), the shaft ring parts (2) at the two ends are respectively provided with a lubricating hole I (5) which is radially arranged, and the lubricating hole I (5) is vertically communicated with the main oil duct (4), and each cam (3) is provided with a second lubricating hole (6) which is radially arranged, and the second lubricating hole (6) is vertically communicated with the main oil duct (4).

2. A motorcycle camshaft according to claim 1, characterized in that the cam (3) comprises an annular portion (7) arranged coaxially with the camshaft body (1), a cam abutment portion (8) arranged radially outwardly away from the annular portion (7), and the main oil gallery (4) is located in the annular portion (7) of the camshaft body (1); the second lubricating holes (6) are formed in an annular part (7) of the cam (3) of the camshaft shaft body (1), and orifices of the second lubricating holes (6) are arranged in the same axial direction and are in a straight line shape.

3. A motorcycle camshaft according to claim 2, characterized in that three cams (3) are axially and evenly distributed on the camshaft body (1), the axial distance of the middle cam (3) is greater than the axial distance of the cams (3) at the two ends, and the cams (3) at the two ends are symmetrically distributed relative to the middle cam (3).

4. A motorcycle camshaft as claimed in claim 3, wherein the orifices of the first oil-moistening hole (5) and the orifices of the second oil-moistening hole (6) are both oriented in the same direction.

5. A motorcycle camshaft according to claim 4, characterized in that the main oil gallery (4) has an annular groove (9) through the collar portion (2) at one end of the camshaft body (1), the bottom of the annular groove (9) is provided with a third lubricating hole (10), and the orifices of the third lubricating hole (10) and the second lubricating hole (6) are arranged in the same direction.

6. A motorcycle camshaft according to claim 5, characterized in that the camshaft body (1) is further provided with an auxiliary oil gallery (11), one end of the auxiliary oil gallery (11) and the main oil gallery (4) penetrate through the shaft ring part (2) at one end in the same direction, the other end of the auxiliary oil gallery (11) extends to the position of the middle cam (3), the middle cam (3) is provided with a pin hole (12) communicated with the auxiliary oil gallery (11), a lubricating hole four (13) communicated with the auxiliary oil gallery (11) is arranged between the shaft ring part (2) penetrated by the auxiliary oil gallery (11) and the adjacent cam (3), and the directions of the orifices of the lubricating hole four (13) and the orifices of the pin hole (12) are the same.