CN209780986U - Novel air inlet rocker shaft positioning mechanism - Google Patents

Abstract

The utility model relates to a novel air inlet rocker shaft positioning mechanism, which comprises an air inlet cam shaft and an air inlet rocker, wherein a cam support piece is arranged outside the air inlet cam shaft, and the lower end of the cam support piece is provided with two bolt holes which are parallel to each other; the air inlet rocker arm comprises an air inlet rocker arm shaft and an air inlet rocker arm body, a rocker arm shaft ferrule is fixedly connected to the outer side of the air inlet rocker arm shaft, ferrule clamping teeth are arranged on the rocker arm shaft ferrule, a rocker arm shaft sleeve is arranged between the air inlet rocker arm shaft and the air inlet rocker arm body, and a sleeve inner notch is formed in the rocker arm shaft sleeve. The cam support piece is fixedly connected with the connecting sleeve through the clamping teeth in a clamping mode and through the two parallel positioning bolts, the positioning of the air inlet rocker arm shaft is completed, the axial movement of the rocker arm shaft during swinging is controlled, the noise of an engine is reduced, the connection is stable, the abrasion is reduced, and the service life is prolonged. The novel air inlet rocker arm shaft positioning mechanism has the advantages of stable positioning and long service life.

Description

Novel air inlet rocker shaft positioning mechanism

Technical Field

The utility model relates to an engine part, especially a novel inlet rocker arm axle positioning mechanism.

Background

in the prior art, because the diameter and the center distance of a cylinder are smaller, if an integral camshaft support body and a single cylinder cover structure are adopted, an air inlet rocker shaft is fixedly arranged in an air inlet rocker shaft mounting hole of the camshaft support body, and a valve is driven to rotate around the air inlet rocker shaft through a cam, so that the function of preventing the rocker shaft from rotating circumferentially is not realized in the original structural design, the abrasion of the rocker shaft can be accelerated due to the rotation of the air inlet rocker shaft, the air inlet rocker shaft has certain axial movement, noise is generated and the valve motion is influenced, meanwhile, the problem of leakage of engine oil is caused, the positioning structure can only be provided with one positioning bolt or pin, and the air inlet rocker shaft is inclined and not level in the hole after the positioning structure is installed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned situation, there is a need for a novel positioning mechanism for an intake rocker shaft, which has the advantages of stable positioning and long service life.

A novel positioning mechanism for an air inlet rocker arm shaft comprises an air inlet cam shaft and an air inlet rocker arm, wherein a cam support piece is arranged on the outer side of the air inlet cam shaft, and two bolt holes which are parallel to each other are formed in the lower end of the cam support piece;

One side of the cam support part is connected with an air inlet rocker arm, the air inlet rocker arm comprises an air inlet rocker arm shaft and an air inlet rocker arm body, the air inlet rocker arm shaft is positioned in the middle of the air inlet rocker arm body, one side of the air inlet rocker arm body is connected with an air inlet valve spring, the lower end of the air inlet valve spring is sleeved with an air inlet valve, and the other side of the air inlet rocker arm body is connected with an air inlet hydraulic tappet;

The outer side of the air inlet rocker shaft is fixedly connected with a rocker shaft ferrule, the rocker shaft ferrule is provided with ferrule snap teeth, a rocker shaft sleeve is arranged between the air inlet rocker shaft and the air inlet rocker body, a sleeve inner notch is formed in the rocker shaft sleeve, the sleeve inner notch is meshed with the ferrule snap teeth, and two bolt holes which are parallel to each other are formed in the upper end of the rocker shaft sleeve.

Preferably, the bolt hole formed in the rocker shaft sleeve and the bolt hole formed in the cam support member are fixedly connected through a stud bolt.

Preferably, a limiting part is arranged at the joint of the air inlet hydraulic tappet and the air inlet rocker arm body.

Preferably, the inner notch of the sleeve is a U-shaped groove with a double-layer cylinder wall, a notch is formed in the edge of the inner side of the U-shaped groove, and the ferrule clamping teeth are clamped into the inner portion of the U-shaped groove.

Above-mentioned novel inlet air rocker arm shaft positioning mechanism, through cup jointing the latch on inlet air rocker arm shaft, through latch block connecting sleeve, the sleeve is then through two parallel positioning bolt fixed connection cam support piece, accomplishes inlet air rocker arm shaft's location, and the axial float of control rocker arm shaft when the swing, then reduces engine noise's production, and can not take place downthehole slope scheduling problem, connects firmly, guarantees the stability of sealing member, and sealed effect improves, and reducing wear improves life.

Drawings

Fig. 1 is an overall structure diagram of a novel positioning mechanism of an air intake rocker shaft provided by an embodiment of the present invention;

Fig. 2 is a connection structure diagram of a cam support member and an intake rocker arm of the novel intake rocker shaft positioning mechanism provided by the present invention;

Fig. 3 is a connection structure diagram of the air inlet rocker shaft and the rocker shaft sleeve of the novel air inlet rocker shaft positioning mechanism provided by the utility model;

Fig. 4 is a rocker shaft sleeve structure diagram of a novel air inlet rocker shaft positioning mechanism provided by the utility model.

In the figure: 1. an intake camshaft; 2. an intake rocker arm; 3. a cam support; 4. bolt holes; 5. an intake rocker shaft; 6. an intake rocker arm body; 7. an intake valve spring; 8. an intake valve; 9. an air intake hydraulic tappet; 10. a rocker shaft ferrule; 11. ferrule latch; 12. a rocker shaft sleeve; 13. a notch in the sleeve; 14. a stud bolt.

Detailed Description

in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, with reference to the accompanying drawings and embodiments, will explain in further detail the novel positioning mechanism for an air intake rocker arm shaft of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, a novel positioning mechanism for an intake rocker arm shaft according to an embodiment of the present invention includes an intake camshaft 1 and an intake rocker arm 2, a cam support member 3 is disposed outside the intake camshaft 1, and two bolt holes 4 parallel to each other are disposed at a lower end of the cam support member 3;

One side of the cam support member 3 is connected with an air inlet rocker arm 2, the air inlet rocker arm 2 comprises an air inlet rocker arm shaft 5 and an air inlet rocker arm body 6, the air inlet rocker arm shaft 5 is positioned in the middle of the air inlet rocker arm body 6, one side of the air inlet rocker arm body 6 is connected with an air inlet valve spring 7, the lower end of the air inlet valve spring 7 is sleeved with an air inlet valve 8, the other side of the air inlet rocker arm body 6 is connected with an air inlet hydraulic tappet 9, and a limiting part is arranged at the joint of the air inlet hydraulic tappet 9 and the air inlet rocker arm body 6 and used;

The outer side of the air inlet rocker arm shaft 5 is fixedly connected with a rocker arm shaft ferrule 10, the rocker arm shaft ferrule 10 is provided with a ferrule latch 11, the latch is sleeved on the air inlet rocker arm shaft 5 and is connected with a sleeve through latch clamping, the sleeve is fixedly connected with a cam support member 3 through two parallel positioning bolts, a rocker arm shaft sleeve 12 is arranged between the air inlet rocker arm shaft 5 and an air inlet rocker arm body 6, a bolt hole 4 formed in the rocker arm shaft sleeve 12 and a bolt hole 4 formed in the cam support member 3 are fixedly connected through a stud 14, a notch 13 in the sleeve is a U-shaped groove with a double-layer cylinder wall, a notch is arranged at the edge of the inner side of the U-shaped groove, the ferrule latch 11 is clamped into the inner part of the U-shaped groove, the rocker arm shaft sleeve 12 is internally provided with a sleeve inner notch 13, the sleeve inner notch 13 is meshed with the.

the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.

Claims (4)

1. the utility model provides a novel intake rocker arm axle positioning mechanism, includes intake camshaft (1) and intake rocker arm (2), its characterized in that: a cam supporting piece (3) is arranged on the outer side of the air inlet camshaft (1), and two bolt holes (4) which are parallel to each other are formed in the lower end of the cam supporting piece (3);

One side of the cam support member (3) is connected with an air inlet rocker arm (2), the air inlet rocker arm (2) comprises an air inlet rocker arm shaft (5) and an air inlet rocker arm body (6), the air inlet rocker arm shaft (5) is positioned in the middle of the air inlet rocker arm body (6), one side of the air inlet rocker arm body (6) is connected with an air inlet valve spring (7), the lower end of the air inlet valve spring (7) is sleeved with an air inlet valve (8), and the other side of the air inlet rocker arm body (6) is connected with an air inlet hydraulic tappet (9);

The air inlet rocker arm structure is characterized in that a rocker arm shaft sleeve ring (10) is fixedly connected to the outer side of the air inlet rocker arm shaft (5), sleeve ring clamping teeth (11) are arranged on the rocker arm shaft sleeve ring (10), a rocker arm shaft sleeve (12) is arranged between the air inlet rocker arm shaft (5) and the air inlet rocker arm body (6), a sleeve inner notch (13) is formed in the rocker arm shaft sleeve (12), the sleeve inner notch (13) is meshed with the sleeve ring clamping teeth (11), and two bolt holes (4) which are parallel to each other are formed in the upper end of the rocker arm shaft sleeve (12).

2. the novel intake rocker shaft positioning mechanism of claim 1, wherein: the bolt hole (4) formed in the rocker shaft sleeve (12) and the bolt hole (4) formed in the cam support member (3) are fixedly connected through a stud bolt (14).

3. the novel intake rocker shaft positioning mechanism of claim 1, wherein: and a limiting part is arranged at the joint of the air inlet hydraulic tappet (9) and the air inlet rocker arm body (6).

4. The novel intake rocker shaft positioning mechanism of claim 1, wherein: the inner notch (13) of the sleeve is a U-shaped groove with a double-layer cylinder wall, a notch is formed in the edge of the inner side of the U-shaped groove, and the ferrule clamping teeth (11) are clamped into the inner part of the U-shaped groove.