CN202596825U

CN202596825U - Thrust structure for cam shaft of engine

Info

Publication number: CN202596825U
Application number: CN 201220282425
Authority: CN
Inventors: 胡景彦; 洪进
Original assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Current assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-12-12
Anticipated expiration: 2022-06-15

Abstract

The utility model discloses a thrust structure for a cam shaft of an engine. The thrust structure comprises a cylinder body (1) of the engine and the cam shaft (2) arranged in the cylinder body (1). A through hole (101) matched with the cam shaft (2) is arranged on the cylinder body (1), one end of the cam shaft (2) is sleeved in the through hole (101), and an annular groove (201) is arranged at one end of the cam shaft (2) on the outer side of the cylinder body (1) in the radial direction. The thrust structure for the cam shaft of the engine further comprises a thrust piece (3), the arm side portion (301) of the thrust piece (3) is clamped in the annular groove (201), and the thrust piece (3) is fixed on the outer wall of the cylinder body (1). The thrust structure for the cam shaft of the engine simplifies processing processes and reduces the longitudinal size of the engine.

Description

The thrust structure of engine cam

Technical field

The utility model relates to technical field of automobile engine, specifically is a kind of thrust structure of engine cam.

Background technique

The thrust mode of Traditional engine camshaft is on camshaft bearing journal and cylinder body, to reserve the thrust structure; This thrust structure generally comprises the location shaft shoulder that is arranged on the camshaft bearing journal, is arranged on the bearing cap that cooperates with the location shaft shoulder on the cylinder body, through the location shaft shoulder with make that the formation thrust stops that structural type is complicacy between camshaft and cylinder body cooperating of bearing cap; And the axle journal of the camshaft of fitness for purpose generation thrust structure will extend; Make the length of camshaft longer, make the motor longitudinal size bigger, thereby make the motor volume bigger; And need on camshaft and cylinder body, process the thrust structure of reservation, manufacturing procedure is complicated.

The model utility content

The utility model technical problem to be solved is, the thrust structure that makes manufacturing procedure simplify, make the engine cam that the motor longitudinal size reduces is provided.

For solving the problems of the technologies described above, the thrust structure of the engine cam that the utility model provides comprises the cylinder body of motor and is arranged on the camshaft in the cylinder body; Described cylinder body is provided with the through hole that matches with camshaft; One end of camshaft is socketed in the through hole, and camshaft is free to rotate but can't move radially, and the part that is positioned at the cylinder body outside of an end of camshaft radially is provided with annular groove; This annular groove is located on the peripheral wall of camshaft; The thrust structure of described engine cam also comprises a thrust plate, and the arc limit portion of thrust plate is connected in the annular groove, and thrust plate is fixed in the outer wall of cylinder body.

After adopting above structure, the utility model compared with prior art has following advantage:

Adopt outside thrust plate to accomplish the thrust Design of camshaft, simple in structure, thrust plate is extremely thin; Reduced the length of camshaft and cylinder body; The motor longitudinal size is reduced, the volume of motor is reduced, make motor miniaturization, lightweight; Not be used in the thrust structure that processing is reserved on camshaft and the cylinder body simultaneously, make simplified working procedures.

As improvement; The outer wall that described thrust plate is fixed in cylinder body is meant that thrust plate is provided with at least two positioning through hole; Be respectively equipped with the tapped hole with each positioning through hole coaxial line on the cylinder body, also be provided with pass positioning through hole and with the screw of corresponding tapped hole screw fit, through the screw thrust plate; Fixation, convenience, and be easy to dismounting.

As further improvement; Described positioning through hole is two and is located at the two ends of thrust plate respectively that these two ends are meant along the two end part of the length direction of thrust plate, that is to say that the two ends of thrust plate are fixed through screw and cylinder body; Make thrust plate fixing more firm, be difficult for loosening.

As further improving; Described thrust plate is provided with oil groove, and an end of oil groove is portion place opening in the arc limit, can be the surface of contact interpolation lubricant oil of the annular groove of thrust plate and camshaft through oil groove; Reduce the frictional force of thrust plate and camshaft, do not influence the normal rotation of camshaft.

Description of drawings

Fig. 1 is the structural representation of the thrust structure of the utility model engine cam;

Fig. 2 be among Fig. 1 A-A to partial sectional view;

Fig. 3 is camshaft and the structural representation of thrust plate of the thrust structure of the utility model engine cam;

Fig. 4 is the structural representation of thrust plate of the thrust structure of the utility model engine cam.

Wherein, 1, cylinder body; 101, through hole; 102, outer side wall; 103, tapped hole; 2, camshaft; 201, annular groove; 202, right side wall; 3, thrust plate; 301, arc limit portion; 302, positioning through hole; 303, oil groove; 4, screw.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.

Structural representation by the thrust structure of Fig. 1, Fig. 2, Fig. 3, the utility model engine cam shown in Figure 4 can be known; It comprises the cylinder body 1 and the camshaft 2 that is arranged in the cylinder body 1 of motor; Described cylinder body 1 is provided with the through hole 101 that matches with camshaft 2, and an end of camshaft is socketed on the outside that through hole end interior and camshaft is positioned at cylinder body 1, and this end is connected with driving wheel; Camshaft 2 is free to rotate but can't move radially; The part that is positioned at cylinder body 1 outside of one end of camshaft 2 radially is provided with annular groove 201, and this annular groove 201 radially is located on the peripheral wall of camshaft 2, and the thrust structure of described engine cam also comprises a thrust plate 3; The arc limit portion 301 of thrust plate 3 is connected in the annular groove 201; The arc limit portion of thrust plate 3 and the annular groove 201 of camshaft 2 fit and close-fitting, and the right side wall 202 of annular groove 201 is concordant with the outer side wall 102 of cylinder body 1, that is to say that the outer wall that thrust plate 3 is connected in annular groove 201 back thrust plates 3 and cylinder body 1 fits; After the outer wall of thrust plate 3 and cylinder body 1 fitted, thrust plate 3 was fixed in the outer wall of cylinder body 1.

The outer wall that described thrust plate 3 is fixed in cylinder body 1 is meant that thrust plate 3 is provided with at least two positioning through hole 302; Be respectively equipped with the tapped hole 103 with each positioning through hole 302 coaxial lines on the cylinder body 1, also be provided with pass positioning through hole 302 and with the screw 4 of corresponding tapped hole 103 screw fit.

Described positioning through hole 302 is two and is located at the two ends of thrust plate 3 respectively that these two ends are meant along the two ends of the length direction of thrust plate 3.

Described thrust plate 3 is provided with oil groove 303, and an end of oil groove 303 is portion's 301 place's openings in the arc limit, and the tow sides of thrust plate 3 are equipped with two oil grooves 303 of different direction.

Claims

1. the thrust structure of an engine cam; It comprises the cylinder body (1) and the camshaft (2) that is arranged in the cylinder body (1) of motor; It is characterized in that: described cylinder body (1) is provided with the through hole (101) that matches with camshaft (2); One end of camshaft (2) is socketed in the through hole (101), and the part that is positioned at cylinder body (1) outside of an end of camshaft (2) radially is provided with annular groove (201), and the thrust structure of described engine cam also comprises a thrust plate (3); The arc limit portion (301) of thrust plate (3) is connected in the annular groove (201), and thrust plate (3) is fixed in the outer wall of cylinder body (1).

2. the thrust structure of engine cam according to claim 1; It is characterized in that: the outer wall that described thrust plate (3) is fixed in cylinder body (1) is meant that thrust plate (3) is provided with at least two positioning through hole (302); Be respectively equipped with the tapped hole (103) with each positioning through hole (302) coaxial line on the cylinder body (1), also be provided with pass positioning through hole (302) and with the screw (4) of corresponding tapped hole (103) screw fit.

3. the thrust structure of engine cam according to claim 2 is characterized in that: described positioning through hole (302) is two and is located at the two ends of thrust plate (3) respectively.

4. the thrust structure of engine cam according to claim 1, it is characterized in that: described thrust plate (3) is provided with oil groove (303), and portion (301) locates opening to an end of oil groove (303) in the arc limit.