CN203223264U

CN203223264U - Engine valve tappet

Info

Publication number: CN203223264U
Application number: CN 201320108798
Authority: CN
Inventors: 唐永东; 张勃
Original assignee: YIZHENG HUACHENG INTERNAL COMBUSTION ENGINE FITTINGS FACTORY
Current assignee: YIZHENG HUACHENG INTERNAL COMBUSTION ENGINE FITTINGS FACTORY
Priority date: 2013-03-11
Filing date: 2013-03-11
Publication date: 2013-10-02
Anticipated expiration: 2023-03-11

Abstract

The utility model relates to an engine valve tappet, which comprises a tappet body base, a tappet inner chamber, an oil return pipe outlet groove and an oil return pipe. The valve tappet is of the shape of a straight cylinder. The oil return pipe outlet groove is arranged on the outer surface of the end part of the tappet body base. The inlet end of the oil return pipe is arranged on the inner wall of the tappet inner chamber. The outlet end of the oil return pipe is arranged on the oil return pipe outlet groove. The end surface of the tappet body base is a spherical surface. The inner wall of the tappet inner chamber has a certain angle. The engine valve tappet has the advantages that the structure is simple; and by designing the end surface of the tappet body base to be the spherical surface and arranging the inner wall of the tappet inner chamber at the certain angle, the strength of the end surface of the tappet body base is improved, the wear of the side surface of the tappet is reduced, the probability that the tappet gets stuck and ruptured is reduced and the normal working of an engine is guaranteed.

Description

The engine valve tappet

Technical field

The utility model relates to the engine valve tappet, belongs to technical field of engines.

Background technique

Valve tappet is a critical piece in the valve transmission group, and tappet is the driven member of cam, and its effect is that motion and active force from cam are passed to push rod or valve, also bears lateral force that cam applies simultaneously and it is passed to body or cylinder head.

Tappet is when work, its bottom surface contacts with cam, because area of contact is little, contact pressure is big, therefore wearing and tearing are serious relatively, under the not nyctitropic lateral forces of cam, increased the weight of the tappet side surface that play the guiding role and the eccentric wear of tappet mouth, then stuck phenomenon of rupture can take place, thereby influenced the motor proper functioning.

The model utility content

At above-mentioned defective, the purpose of this utility model is to provide a kind of simple in structure, tappet body base end face intensity height, alleviates the wearing and tearing of tappet side surface, reduces the engine valve tappet of the stuck fracture probability of tappet.

The technological scheme that adopts of the utility model is for this reason: comprise that tappet body base, tappet inner chamber, return tube go out port recess and return tube, described valve tappet is straight tubular, described tappet body base end outer surface is provided with return tube and goes out port recess, the entrance point of described return tube is located on the inwall of tappet inner chamber, the outlet end of return tube is located at return tube and goes out on the port recess, the end face of described tappet body base is sphere, and the inwall of described tappet inner chamber is provided with several angle.

The spherical radius of described tappet body base is SR1500mm～SR49000mm.

The inwall angle of described tappet inner chamber is 2 °～3 °.

The utility model has the advantages that: the utility model is simple in structure, be provided with angle by the inwall that tappet body base end face is made as sphere and tappet inner chamber, thereby the wearing and tearing that improved tappet body base end face intensity and alleviated the tappet side surface, reduce the probability of the stuck fracture of tappet, guaranteed the motor proper functioning.

Description of drawings

Fig. 1 is structural representation of the present utility model.

1 is tappet body base, the 2nd among the figure, and tappet inner chamber, the 3rd, return tube go out port recess, the 4th, return tube, the 5th, sphere, the 6th, inwall.

Embodiment

The engine valve tappet, comprise that tappet body base 1, tappet inner chamber 2, return tube go out port recess 3 and return tube 4, described valve tappet is straight tubular, described tappet body base 1 end outer surface is provided with return tube and goes out port recess 3, the entrance point of described return tube 4 is located on the inwall 6 of tappet inner chamber 2, the outlet end of return tube 4 is located at return tube and goes out on the port recess 3, and the end face of described tappet body base 1 is sphere 5, and the inwall 6 of described tappet inner chamber 2 is provided with several angle; Sphere 5 radiuses of described tappet body base 1 are SR1500mm～SR49000mm; Inwall 6 angles of described tappet inner chamber 2 are 2 °～3 °.

Claims

1. engine valve tappet, it is characterized in that, comprise that tappet body base, tappet inner chamber, return tube go out port recess and return tube, described valve tappet is straight tubular, described tappet body base end outer surface is provided with return tube and goes out port recess, and the entrance point of described return tube is located on the inwall of tappet inner chamber, and the outlet end of return tube is located at return tube and goes out on the port recess, the end face of described tappet body base is sphere, and the inwall of described tappet inner chamber is provided with several angle.

2. engine valve tappet according to claim 1 is characterized in that, the spherical radius of described tappet body base is SR1500mm～SR49000mm.

3. engine valve tappet according to claim 1 is characterized in that, the inwall angle of described tappet inner chamber is 2 °～3 °.