CN220621982U - Camshaft structure, engine and vehicle - Google Patents

Abstract

The application discloses a camshaft structure, engine and vehicle. The camshaft structure comprises a shaft body, wherein the shaft body comprises a first positioning section for clamping a tool, the first positioning section comprises a plurality of clamping surfaces which are arranged around the circumference of the shaft body at intervals, the clamping surfaces are respectively arranged along the extending direction of the shaft body, the clamping surfaces are opposite to each other, and the number of the clamping surfaces is even and greater than or equal to 4.

Description

Camshaft structure, engine and vehicle

Technical Field

The application relates to the technical field of engine accessories, and more particularly relates to a camshaft structure, an engine and a vehicle.

Background

The camshaft is a component in a piston engine and includes an intake camshaft and an exhaust camshaft, which are used to control the opening and closing actions of the valves. However, in the prior art, the design and adjustment flexibility of the cam shaft is limited, so that the cam shaft is complex in operation and low in adaptability in the assembling and using processes.

Therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

It is an object of the present application to provide a new solution for a camshaft structure.

According to a first aspect of the present application, a camshaft structure is provided. The camshaft structure includes a shaft body. The shaft body comprises a first positioning section for clamping the tool, the first positioning section comprises a plurality of clamping surfaces which are arranged around the shaft body at intervals in the circumferential direction, the clamping surfaces are respectively arranged along the extending direction of the shaft body, the clamping surfaces are opposite to each other, and the number of the clamping surfaces is even and greater than or equal to 4.

Optionally, a transition structure is provided between adjacent clamping surfaces.

Optionally, the clamping surface is lower than an outer circumferential surface of the shaft body.

Optionally, the number of the clamping surfaces is 4 or 6.

Optionally, the shaft body is provided with a second positioning section, the second positioning section comprises two positioning surfaces which are arranged around the circumference of the shaft body at intervals, and the two positioning surfaces are oppositely arranged.

Optionally, the cam shaft structure comprises a plurality of groups of cams, and the first positioning section is located between two adjacent groups of cams.

Optionally, the camshaft structure further includes an end piece, the shaft body having opposite ends, the end piece being assembled and secured to at least one end of the shaft body to rotate the end piece drive shaft body.

Optionally, the shaft body is hollow, and at least part of the end part extends into the shaft body.

According to a second aspect of the present application, an engine is provided. The engine comprises an engine body and a camshaft structure as described above, the camshaft structure being arranged on the engine body.

According to a third aspect of the present application, a vehicle is provided. The vehicle includes an engine as described above.

The utility model provides a technical effect lies in, through set up first location section on the axle body to frock centre gripping axle body, the rotation angle of axle body is adjusted. Through setting up a plurality of grip faces, as redundant design, guarantee can adjust the positioning accuracy of axle body in a flexible way effectively.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a perspective view of a camshaft structure according to an embodiment of the present application.

Fig. 2 is a perspective view of a shaft body according to an embodiment of the present application.

Fig. 3 is a front view of a shaft body according to an embodiment of the present application.

Fig. 4 is a schematic cross-sectional view of a camshaft structure according to an embodiment of the present application.

Fig. 5 is a perspective view of a front end component according to an embodiment of the present application.

Fig. 6 is a front view of a front end component according to an embodiment of the present application.

Fig. 7 is a perspective view of a cam according to an embodiment of the present application.

Reference numerals illustrate:

in the figure, 1, a shaft body; 11. a first positioning section; 111. a clamping surface; 12. a transition structure; 13. a second positioning section; 131. a positioning surface; 14. a connection part; 141. a first stripe; 142. a second stripe; 15. a support journal; 2. a cam; 21. a mounting hole; 3. an end piece; 31. a front end component; 311. a first journal; 312. a second journal; 313. a plug-in part; 314. a limit protrusion; 315. a through hole; 32. a rear end piece; 4. a signal panel.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

According to one embodiment of the present application, a camshaft structure is provided. The camshaft structure includes a shaft body 1. The shaft body 1 comprises a first positioning section 11 for clamping a tool. The first positioning section 11 includes a plurality of clamping surfaces 111 circumferentially spaced around the shaft body 1. The plurality of the clamping surfaces 111 are each provided along the extending direction of the shaft body 1. The plurality of clamping surfaces 111 are opposite to each other. The number of the clamping surfaces 111 is even and greater than or equal to 4.

As shown in fig. 1, the shaft body 1 has a cylindrical shape. The shaft body 1 is made of carbon steel. The first positioning section 11 is provided on the surface of the shaft body 1. When the shaft body 1 needs to be rotationally adjusted, the first positioning section 11 on the shaft body 1 can be clamped through the tool, so that the shaft body 1 can axially rotate, and the rotation angle of the shaft body 1 can be adjusted.

The tool may be, for example, a clamp having two clamps that clamp onto two opposing clamping surfaces 111.

Of course, the shape, material and structure of the shaft body 1 in the embodiment of the present application are not limited to the above-mentioned structure, and those skilled in the art can set the shape, material and structure according to actual needs.

The first positioning segment 11 includes a plurality of clamping surfaces 111. The plurality of clamping surfaces 111 are arranged at intervals around the circumference of the shaft body 1 so that the tool clamps the shaft body 1 and the tool and the shaft body 1 are prevented from sliding to affect the using effect in the process of clamping and adjusting the shaft body 1.

The clamping surface 111 is arranged along the extending direction of the shaft body 1. I.e. the clamping surface 111 is arranged in the axial direction of the shaft body 1. The clamping surface 111 extends along the axial direction of the shaft body 1, so that the area of the clamping surface 111 is increased, the contact surface between the tool and the shaft body 1 is enlarged, and the clamping effect is improved.

The plurality of holding surfaces 111 are parallel to the extending direction of the shaft body 1, respectively, so that the rotation accuracy of the shaft body 1 can be improved.

The clamping surfaces 111 are opposite to each other in pairs so as to clamp the shaft body 1 through the tool, and the adjusting precision of the shaft body 1 is effectively improved.

The number of the holding surfaces 111 is even and greater than or equal to 4. The number of the clamping surfaces 111 arranged at intervals around the shaft body 1 is even, and the clamping surfaces 111 are opposite to each other in pairs so as to clamp the shaft body 1 by the tool, and the arrangement of the clamping surfaces 111 is used as a redundant design to ensure that the positioning precision of the shaft body 1 can be effectively and flexibly adjusted. The adjustment accuracy of the shaft body 1 is effectively improved.

Specifically, when the shaft body 1 is mounted to the engine block, since it is necessary to ensure that the cams on the shaft body 1 can jack up and close the intake and exhaust valves of the combustion chamber as desired, the mounting angle of the shaft body 1 needs to be adjusted a plurality of times, and damage occurs to the holding surface 111. Therefore, the present application provides at least 4 or more, and the clamps are opposite to each other, that is, the clamps need to clamp and loosen the shaft body 1 a plurality of times, so as to drive the shaft body 1 to rotate to change the installation angle of the shaft body 1; on the basis, the shaft body 1 is clamped and loosened for multiple times, relative friction can be generated between the tool and the clamping surface 111, and the clamping of the clamping surfaces 111 is easy to cause, so that the damage of the two opposite clamping surfaces 111 is prevented, and the adjustment precision of the shaft body 1 is affected.

The tool is used for adjusting the relative position of the cam shaft structure. Specifically, when adjusting the camshaft structure, the first positioning section 11 of the tool clamping shaft body 1 drives the camshaft structure to rotate, so that the position of the camshaft structure is changed. The tool can be a spanner and other tools.

The tool may also be used for calibrating the position. The method comprises the following steps: after the camshaft structure position is positioned, the first positioning section 11 of the tool clamping shaft body 1 drives the camshaft structure to rotate, the chain wheel at the front end of the camshaft structure drives the crankshaft to rotate, and whether the requirements are met or not can be judged by measuring the rotation angle of the crankshaft and the rotation angle of the camshaft structure, if the requirements are not met, the positioning accuracy is wrong.

In this embodiment of the application, through setting up first location section 11 on axle body 1 to frock centre gripping axle body 1, the rotation angle of axle body 1 is adjusted. By providing a plurality of clamping surfaces 111, the adjustment accuracy of the shaft body 1 is effectively improved.

In one example, there is a transition structure 12 between adjacent ones of the clamping surfaces 111.

As shown in fig. 1, the plurality of clamping surfaces 111 are disposed at intervals around the circumference of the shaft body 1. Smooth transitions between adjacent clamping surfaces 111 are provided, for example, by chamfering between adjacent clamping surfaces 111. A transition structure 12 is provided between adjacent clamping faces 111 so that the tool clamps the shaft body 1 to adjust the rotational accuracy of the shaft body 1.

The transition structure 12 may be a circular arc structure formed between two adjacent clamping surfaces 111. The circular arc structure enables a circular arc transition between the two clamping surfaces 111.

In one example, the clamping surface 111 is lower than the outer circumferential surface of the shaft body 1.

As shown in fig. 1, the surface of the shaft body 1 is subjected to a material removing process to form a plurality of holding surfaces 111 on the surface of the shaft body 1. The clamping surface 111 is formed on the surface of the shaft body 1 by the material removing treatment, so that the processing mode is simple, and the weight of the shaft body 1 can be reduced.

Of course, the clamping surface 111 in the embodiment of the present application is not limited to the above-mentioned processing manner, and those skilled in the art can set the clamping surface according to actual needs. For example, the first positioning section 11 protruding from the outer circumferential surface of the shaft body 1 may be provided on the shaft body 1.

In one example, the number of gripping surfaces 111 is 4 or 6.

As shown in fig. 1 to 3, the first positioning section 11 includes a plurality of clamping surfaces 111 circumferentially spaced around the shaft body 1. The clamping surface 111 is formed by machining or pressing the surface of the shaft body 1. The first positioning section 11 includes a six-sided structure or a four-sided structure provided on the shaft body 1. The four-sided structure or the six-sided structure is formed by processing in a manner of extruding or turning dough, and the processing precision requirement is low. The positioning can be performed using a four-sided structure or a six-sided structure.

When the tool clamps the shaft body 1, the tool clamping surface 111 may generate relative friction with the surface of the four-sided structure or the six-sided structure, so as to damage the positioning surface 131 on the camshaft, and damage one of the surfaces of the four-sided structure or the six-sided structure to be unusable, so that the positioning of the camshaft structure is inaccurate. The other opposite surface of the four-sided or six-sided structure may still be used at this time.

Of course, the positioning structure in the embodiment of the present application is not limited to the above structure, and those skilled in the art may set the positioning structure according to actual needs. For example, the holding surface 111 may have an octahedral structure.

In one example, the shaft body 1 has a second positioning section 13, where the second positioning section 13 includes two positioning surfaces 131 that are spaced around the circumference of the shaft body 1, and the two positioning surfaces 131 are disposed opposite to each other.

As shown in fig. 1 to 4, two positioning surfaces 131 are formed on the surface of the shaft body 1 by performing a blanking process on the surface of the shaft body 1. Two positioning surfaces 131 which are oppositely arranged are formed on the surface of the shaft body 1 in a material removing treatment mode, so that the processing mode is simple, and the weight of the shaft body 1 can be reduced.

The two positioning surfaces 131 can be used for fine positioning after coarse positioning, for example, after coarse positioning is performed on the shaft body through the plurality of clamping surfaces 111 on the first positioning section 11, fine positioning is performed on the shaft body through the two positioning surfaces 131 with double-sided structure.

Of course, the positioning surface 131 is not limited to the above structure in the embodiment of the present application, and those skilled in the art may set the positioning surface according to actual needs. For example, the second positioning section 13 protruding from the outer circumferential surface of the shaft body 1 may be provided on the shaft body 1. Or by machining to give a double-sided structure, e.g. by turning a dough, etc.

The tool is contacted with the two positioning surfaces 131 to clamp the second positioning section 13 of the shaft body 1. The rotating angle of the shaft body 1 is adjusted through the tool, and the shaft body 1 is subjected to fine positioning adjustment. The shaft body 1 is subjected to rotation coarse positioning through the first positioning section 11, and then the shaft body 1 is subjected to fine positioning through the second positioning section 13. The rotational accuracy of the shaft body 1 is improved by double positioning.

Of course, the positioning surface 131 is not limited to the above structure in the embodiment of the present application, and those skilled in the art may set the positioning surface according to actual needs. For example, the second positioning segment 13 may also be of a four-sided structure. The number of locating surfaces 131 of the second locating section 13 is smaller than the number of clamping surfaces 111 of the first locating section 11.

In one example, the camshaft structure includes a cam 2, a connecting portion 14 is provided on the shaft body 1, and the cam 2 is assembled and fixed on the connecting portion 14. The shaft body 1 may be formed with the connecting portion 14 by machining or pressing, or the like.

As shown in fig. 1 to 4, the cam 2 is assembled and fixed to the shaft body 1 by the connecting portion 14. The first positioning section 11 of the shaft body 1 is clamped through the tool to adjust the rotation angle of the shaft body 1, so that the position of the cam 2 fixed on the shaft body 1 is adjusted to improve the position accuracy of the cam 2.

In one example, the camshaft structure includes a plurality of sets of the cams 2, and the first positioning segment 11 is located between two adjacent sets of the cams 2.

As shown in fig. 1 to 4, the shaft body 1 has four sets of cams 2 thereon, each set including two cams 2. The first positioning segment 11 is located between two adjacent sets of cams 2. The first positioning section 11 is arranged between the two groups of cams 2, so that the precision of each group of cams 2 on the shaft body 1 can be adjusted, and the deviation of the adjusting precision of the cams 2 far away from the first positioning section 11 is avoided.

Of course, the first positioning section 11 in the embodiment of the present application is not limited to the above-described structure, and those skilled in the art can set the first positioning section according to actual needs. For example, the first positioning section 11 may also be provided at the end of the shaft body 1. Preferably, the first positioning segment 11 is arranged between two adjacent sets of cams 2.

In one example, the camshaft structure further comprises an end piece 3. The shaft body 1 has opposite ends. The end piece 3 is assembled and fixed to at least one end of the shaft body 1 so that the end piece 3 drives the shaft body 1 to rotate.

As shown in fig. 1, end members 3 may be provided at opposite ends of the shaft body 1. For example, an end part 3 is assembled and fixed at one end or both ends of the shaft body 1, and the shaft body 1 is rotated by the end part 3, so that the cam 2 is rotated.

In this embodiment of the application, through the first location section 11 of frock centre gripping axle body 1 to the position of adjustment axle body 1 and cam 2 effectively improves camshaft structure's assembly precision. The cam 2 is assembled and fixed on the connecting part 14 of the shaft body 1, the end part 3 is assembled and fixed on at least one end of the shaft body 1, the assembled structure is easy to control the assembly precision of the cam shaft structure, the deviation of the cam shaft structure is convenient to control, and the suitability of the cam shaft structure is improved

The shaft body 1, the end member 3, and the cam 2 are made of different materials. On the one hand, the weight of the whole camshaft structure can be reduced; on the other hand, suitable materials can be selected according to the use conditions, functions and the like of different components so as to improve the durability of the camshaft assembly.

In one example, the shaft body 1 is of hollow construction, and at least part of the end piece 3 protrudes into the shaft body 1.

As shown in fig. 1, the shaft body 1 has a hollow cylindrical shape. For example, the diameter of the shaft body 1 is 21mm to 24mm, the hollow hole diameter of the shaft body 1 is 15mm to 18mm, and the length of the shaft body 1 is 200mm to 400mm. The hollow cylindrical structure of the shaft body 1 can further reduce the overall weight of the camshaft structure to improve the flexibility of the camshaft structure while reducing the friction capacity of the camshaft structure.

Of course, the shape and size of the shaft body 1 in the embodiment of the present application are not limited to the above-described structure, and those skilled in the art can set the shape and size according to actual needs.

As shown in fig. 1, 4 to 6, the shaft body 1 has a hollow cylindrical shape. End piece 3 the end piece 3 is locally connected to one end of the shaft body 1. The end member 3 may be partially fitted into the shaft body 1, or the end member 3 may be integrally fitted into the shaft body 1. The end part 3 not only can be used for driving the shaft body 1 to rotate, but also can prevent impurities from entering the inside of the shaft body 1, thereby playing a role in dust prevention. The structure of the end piece 3 can be adjusted according to the product requirements. The material of the end piece 3 may be powder metallurgy, alloy steel or carbon steel.

Of course, the connection manner of the end member 3 and the shaft body 1 in the embodiment of the present application is not limited to the above-described structure, and those skilled in the art can set the connection manner according to actual needs.

In one example, the end part 3 comprises a front end part 31 and a rear end part 32, the front end part 31 and the rear end part 32 being respectively arranged at both ends of the pipe in a sealing manner.

As shown in fig. 1, 4 to 6, the shaft body 1 has a hollow cylindrical shape, and the shaft body 1 has opposite ends. One end of the shaft body 1 is connected to the front end member 31, and the other end of the shaft body 1 is connected to the rear end member 32. The front end member 31 is partially fitted into one end of the shaft body 1. The front end part 31 is sealingly connected to the shaft body 1. The front end member 31 is used not only for dust prevention inside the shaft body 1 but also for rotation of the shaft body 1. The rear end member 32 is integrally fitted into the other end of the shaft body 1, mainly for preventing foreign substances from entering the inside of the shaft body 1.

Of course, the front end member 31 and the rear end member 32 in the embodiment of the present application are not limited to the above-described structure, and may be provided as needed by those skilled in the art. For example, the rear end part 32 is used not only for dust prevention inside the shaft body 1 but also for rotation of the shaft body 1; the front end member 31 is integrally fitted into the other end of the shaft body 1, and is mainly used for preventing foreign substances from entering the inside of the shaft body 1.

In one example, the front end part 31 includes a first journal 311, a second journal 312, a plug-in portion 313 and a limit protrusion 314, the second journal 312 is located between the first journal 311 and the plug-in portion 313, the limit protrusion 314 is disposed between the first journal 311 and the second journal 312, and/or a limit protrusion 314 is disposed between the second journal 312 and the plug-in portion 313, the plug-in portion 313 is assembled and fixed in one end of the pipe, the second journal 312 is used for supporting the camshaft structure, and the first journal 311 is used for connecting with a timing system or a sprocket.

As shown in fig. 5 and 6, the front end member 31 is a short shaft of an integral structure and is made of medium carbon steel. The insertion portion 313 of the front end member 31 is fitted into one end of the shaft body 1, and the first journal 311 of the front end member 31 is away from the shaft body 1. The second journal 312 is located between the socket 313 and the first journal 311. The first journal 311 is adapted to be coupled to a VVT or sprocket of a timing system for rotating the front end member 31 via the VVT or sprocket of the timing system. The second journal 312 serves as the main bearing journal 15 of the camshaft structure, and serves both the functions of supporting the camshaft structure and the thrust limits. The insertion portion 313 is used for connection with the shaft body 1 to achieve tight coupling of the shaft body 1 and the front end member 31. The front end part 31 is rotated by the VVT or the sprocket of the timing system, thereby rotating the shaft body 1 closely coupled to the front end part 31. The limiting protrusion 314 is used for preventing the front end part 31 from sliding and dislocating when driving the shaft body 1 to act, so that the position of the end face of the cam 2 is deviated, and the using effect is affected.

The connecting patterns are formed on the inserting portion 313 in a rolling mode, and the inserting portion 313 with the connecting patterns is pressed into one end of the shaft body 1 to achieve knurling connection. The front end part 31 is fixedly connected with the shaft body 1 through knurled connection, so that the front end part 31 and the shaft body 1 are prevented from sliding and disengaging or loosening when the shaft body 1 bears load to rotate.

Of course, the connection manner of the plug portion 313 and the shaft body 1 in the embodiment of the present application is not limited to the above structure, and those skilled in the art can set the connection manner according to actual needs. For example, spline connection or interference press fitting can be adopted.

In one example, a radially extending through hole 315 is provided in the second journal 312, the through hole 315 being configured to supply oil to the timing system.

As shown in fig. 5 and 6, the first journal 311 and the second journal 312 of the front end part 3 are each of a hollow cylindrical structure, and the first journal 311 communicates with the second journal 312. The through hole 315 on the second journal 312 extends in the radial direction of the second journal 312. The second journal 312 is provided with a plurality of through holes 315. When the front end member 31 is in the supported state, the oil groove of the bearing housing corresponds to the position of the through hole 315. When the front end part 31 rotates, oil in the oil groove passes into the second journal 312 and is supplied to the VVT of the timing system through the first journal 311. The insertion portion 313 of the front end component 31 is of a solid structure to avoid contamination of the oil entering the second journal 312 into the shaft body 1.

In one example, a mounting hole 21 is provided in the cam 2, the connecting portion 14 is located in the mounting hole 21, and the cam 2 and the connecting portion 14 form an interference fit.

As shown in fig. 1, 4 and 7, the cam 2 is fitted over the shaft body 1 through the mounting hole 21. The position of the cam 2 is at the connection 14 of the cam 2. The mounting hole 21 of the cam 2 forms an interference fit with the connecting portion 14 to fix the cam 2 to the shaft body 1.

Of course, the connection mode of the cam 2 and the shaft body 1 in the embodiment of the present application is not limited to the above structure, and those skilled in the art can set the connection mode according to actual needs.

In one example, the connection portion 14 is provided with a first stripe 141 extending in a first direction, and a second stripe 142 extending in a second direction is provided on an inner wall of the mounting hole 21, the first stripe 141 intersecting the second stripe 142.

As shown in fig. 2, 3 and 7, the first stripe 141 of the connection portion 14 and the second stripe 142 on the inner wall of the mounting hole 21 are formed by machining or pressing. The extending direction of the first stripe 141 is different from that of the second stripe 142. When the cam 2 is fixed to the connecting portion 14, the first stripe 141 and the second stripe 142 intersect to bring the cam 2 into a stable connection relationship with the shaft body 1. After the cam 2 is mounted on the shaft body 1, secondary machining is performed, and the profile meeting the lift of the engine valve is refined. The fixing of the cam 2 to the shaft body 1 makes it easy to adjust the cam 2 line shape to further enlarge the line shape design upper limit and the manufacturing upper limit.

Of course, the forming manner of the first stripe 141 and the second stripe 142 in the embodiment of the present application is not limited to the above structure, and those skilled in the art can set the forming manner according to actual needs.

In other examples, the shaft body 1 and the cam 2 are assembled and fixed by bolting, key fitting, or the like.

In one example, the first direction is a circumferential direction of the shaft body 1, and the second direction is an axial direction of the shaft body 1.

As shown in fig. 2, 3 and 7, the first direction is perpendicular to the second direction. When the cam 2 is fixed to the connecting portion 14, the first stripe 141 and the second stripe 142 intersect to form a cross pattern to lock the axial position and the circumferential position of the cam 2. In this way, the shaft body 1 is more firmly assembled and fixed with the cam 2.

In one example, the camshaft structure includes a plurality of sets of cams 2, and a bearing journal 15 is disposed between each set of two adjacent cams 2 on the shaft body 1, and the bearing journal 15 is an annular groove formed on the shaft body 1.

As shown in fig. 1 and 4, four sets of cams 2 each having two cams 2 are provided on the shaft body 1. Four bearing journals 15 are provided on the shaft body 1. The distance between two adjacent bearing journals 15 is 75mm-90mm. A bearing journal 15 is arranged between the two cams 2 of each group. The bearing journal 15 is formed by machining or extrusion. The diameter of the bearing journal 15 is smaller than the diameter of the shaft body 1. The diameter dimension of the bearing journal 15 is 0.4mm-0.6mm smaller than the diameter dimension of the shaft body 1. Each bearing journal is adjacent a second stripe 142 on both sides. The spacing between each bearing journal and the adjacent second stripe 142 is 2mm-5mm.

Of course, the manner and size of forming the bearing journal 15 in the embodiment of the present application are not limited to the above-described structure, and may be set as desired by those skilled in the art.

In one example, the camshaft structure further comprises a signal disc 4, the signal disc 4 being assembled and fixed to the shaft body 1.

As shown in fig. 1 and 4, the signal panel 4 is made of a powder metallurgy material. The signal disc 4 can transmit signals to the timing system to facilitate the timing system in confirming the timing phase of the camshaft configuration and monitoring whether the cam 2 phase adjustment is in place.

According to another embodiment of the present application, an engine is provided. The engine comprises an engine body and a camshaft structure as described above, the camshaft structure being arranged on the engine body.

The camshaft structure is suitable for an engine. The camshaft structure is disposed on the engine block.

According to yet another embodiment of the present application, a vehicle is provided. The vehicle includes an engine as described above.

The camshaft structure is suitable for an engine of a vehicle. Of course, the camshaft structure is not limited to the engine of the vehicle, and may be set as desired by those skilled in the art.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (10)

1. A camshaft structure, characterized by comprising: a shaft body (1);

the shaft body (1) comprises a first positioning section (11) for clamping a tool, the first positioning section (11) comprises a plurality of clamping surfaces (111) which are circumferentially arranged at intervals around the shaft body (1), the clamping surfaces (111) are respectively arranged along the extending direction of the shaft body (1), the clamping surfaces (111) are opposite to each other, and the number of the clamping surfaces (111) is even and greater than or equal to 4;

the shaft body (1) is provided with a second positioning section (13), and the second positioning section (13) comprises positioning surfaces (131) which are arranged around the shaft body (1) at intervals in the circumferential direction.

2. Camshaft structure according to claim 1, characterized in that a transition structure (12) is provided between adjacent clamping faces (111).

3. Camshaft structure according to claim 1, characterized in that the clamping surface (111) is lower than the outer circumferential surface of the shaft body (1).

4. Camshaft structure according to claim 1, characterized in that the number of clamping faces (111) is 4 or 6.

5. Camshaft structure according to claim 1, characterized in that the second positioning segment (13) comprises two positioning surfaces (131), the two positioning surfaces (131) being arranged opposite each other.

6. Camshaft arrangement according to claim 1, characterized in that it comprises a plurality of groups of cams (2), the first positioning segments (11) being located between two adjacent groups of cams (2).

7. Camshaft structure according to claim 1, further comprising an end piece (3), the shaft body (1) having opposite ends, the end piece (3) being assembled and fixed to at least one end of the shaft body (1) such that the end piece (3) drives the shaft body (1) to rotate.

8. Camshaft arrangement according to claim 7, characterized in that the shaft body (1) is of hollow construction, at least part of the end piece (3) protruding into the shaft body (1).

9. An engine comprising an engine block and a camshaft arrangement as claimed in any one of claims 1 to 8, the camshaft arrangement being provided on the engine block.

10. A vehicle comprising the engine of claim 9.