CN102926829A

CN102926829A - Valve rocker mechanism

Info

Publication number: CN102926829A
Application number: CN2012104602491A
Authority: CN
Inventors: 余伟; 兰州
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2012-11-15
Filing date: 2012-11-15
Publication date: 2013-02-13
Anticipated expiration: 2032-11-15
Also published as: CN102926829B

Abstract

The invention relates to the technical field of an engine, in particular to a valve rocker mechanism. The valve rocker mechanism is characterized in that an oil duct is formed on a rocker; the inner end of the oil duct extends to a rocker shaft, and is communicated with an oil chamber in the rocker shaft; the outer end of the oil duct extends to the back face of the rocker, and is communicated with an oil groove formed on the back face; and the oil groove extends to the two ends of the rocker along the back face. Fewer oil ducts are formed in the rocker, so that the strength of the rocker is ensured; the external oil groove is used to provide contact places with oil; the oil groove is not blocked easily; the influence of the oil pressure is smaller; the contact places can be maintained lubricant sufficiently; in addition, the mechanism is simple in technology, and convenient to process.

Description

Valve Rocker Organization

Technical field

The present invention relates to engine art, particularly a kind of Valve Rocker Organization.

Background technique

Rocking arm 1 is in contact with one another with component such as valve stem, push rods, and as shown in Figure 1, A is the rocking arm position that contacts with push rod, and B is the rocking arm position that contacts with valve stem.When engine operation, rocking arm 1 is around pitman arm shaft 2 swing in high frequency, and contact position A, B friction is frequent, except requiring rocking arm itself to possess the higher-strength, need guarantee that also contact position A, B have more lubricated.In the prior art, for guaranteeing the sufficient lubrication of A position, the scheme of use is to be drilled with oil duct 4 at rocking arm 1, and lubricant oil has certain oil pressure in the oil pocket 3, can be along oil duct 4, thread pitch to A position fuel feeding, to guarantee sufficient lubrication; Be to guarantee the sufficient lubrication of B position, the scheme of use is to be drilled with oil duct 5, oil duct 6 at rocking arm 1, because existence and oil duct 6 apertures of oil pressure are less in the oil pocket 3, so that lubricant oil through oil channel 5, ejects, reaches the B position from oil duct 6, lubricates guaranteeing.There is more problem in technology now: oil duct 6 apertures are less, easily stop up, and meeting no matter be that obstruction or injection dynamics are inadequate, all will cause the B position to can not get sufficient lubrication so that oil duct 6 injection dynamics are inadequate when oil pressure is low in the oil pocket 3 in addition; Offer than multi-oil-passage in the rocking arm 1, complex process not only also can reduce the intensity of rocking arm 1 simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of Valve Rocker Organization, when guaranteeing rocker arm strength, so that rocking arm and valve stem, push rod contact position obtain sufficient lubrication.

For reaching above effect, the technical solution used in the present invention is: a kind of Valve Rocker Organization; rocking arm is provided with oil duct; the inner end of described oil duct extends to the pitman arm shaft place and is communicated with oil pocket in it; outer end of described oil duct extends on the back face of rocking arm; and communicate with the oil groove offered on the back face, oil groove extends to the two ends of rocking arm along the back face.

Compared with prior art, there is following technique effect in the present invention:

In rocking arm, offer less oil duct, guaranteed rocker arm strength; Adopted outside oil groove to the contact position fuel feeding, oil groove is difficult for stopping up, and the oil pressure impact is less, so that the contact position keeps sufficient lubrication; Simultaneously, this scheme technique is simple, easy to process.

Description of drawings

Fig. 1 is the structural representation of prior art;

Fig. 2 is structural representation of the present invention;

Fig. 3 is schematic perspective view of the present invention.

Embodiment

Below in conjunction with Fig. 2, Fig. 3, the present invention done being described in further detail:

Consult Fig. 2, a kind of Valve Rocker Organization; rocking arm 10 is provided with oil duct 11; inner end of described oil duct 11 extends to pitman arm shaft 20 places and is communicated with oil pocket 21 in it; outer end of described oil duct 11 extends on the back face 13 of rocking arm 10; and communicate with the oil groove 12 offered on the back face 13, oil groove 12 extends to the two ends of rocking arm 10 along back face 13.The shaft core line of oil duct 11 is vertical with pitman arm shaft 20.Herein, the inner end of oil pocket 11 links to each other by pitman arm shaft oil duct 22 with oil pocket 21, when the shaft core line of oil duct 11 and pitman arm shaft oil duct 22 is overlapping, is conducive to flowing of lubricant oil.

Owing to treating that there are two places the lubricant housings, is respectively: adjust on the screw 30 position 31 that contacts with the ball seat of push rod; Rocking arm 10 position 14 that contacts with valve stem.When using the present invention program, as long as draw two oil ducts at most, by oil

groove contact position

31,14 is carried out sufficient lubrication, but best scheme as shown in this embodiment, only offer an oil duct 11, extend to the peak place of the back face 13 of rocking arm 10 as long as guarantee the outer end of oil duct 11.

Consult Fig. 2, Fig. 3, oil groove 12 is arranged as better along the center line of rocking arm 10 back faces 13, and center line herein refers to: on the axial direction of pitman arm shaft 20, rocking arm 10 has certain thickness, and the position of its five equilibrium thickness is the position of center line.Described oil groove 12 cross sections are square or arc simultaneously.One end of rocking arm 10 is provided with and the attachment hole of adjusting screw 30 and cooperating, and an end of oil groove 12 extends to this attachment hole, after lubricant oil arrives attachment hole, can flow to along this attachment hole and gap between the adjustment screw 30 and treat lubricant housings 31.Described oil groove 12 continues to carry over rocking arm 10 end sides and arranges downwards after extending to the end that rocking arm 10 links to each other with valve stem, and layout more is conducive to lubricant oil is guided to contact position 14 like this.Oil groove 12 is opened on the back face 13, and processing is got up very simple.

Pitman arm shaft 20 itself needs to lubricate simultaneously, and it is not too desirable only having a pitman arm shaft oil duct 22, has another pitman arm shaft oil duct 22 ' on the pitman arm shaft 20 with on pitman arm shaft oil duct 22 symmetrical positions, so that pitman arm shaft reaches lubricated fully.

The lubricant oil that certain oil pressure is arranged in the oil pocket 21 in the pitman arm shaft 20; flow out by pitman arm shaft oil duct 22, oil duct 11; because the outer end of oil duct 11 is arranged on the peak place of back face 13; under Action of Gravity Field; lubricant oil can flow to both sides along oil groove 12; reaching respectively needs

lubricated position

31,14, plays the lubrication protection effect.

Claims

1. Valve Rocker Organization, it is characterized in that: rocking arm (10) is provided with oil duct (11), the inner end of described oil duct (11) extends to that pitman arm shaft (20) is located and is communicated with oil pocket (21) in it, it is upper and communicate with the oil groove (12) offered on the back face (13) that the outer end of described oil duct (11) extends to the back face (13) of rocking arm (10), and oil groove (12) extends to the two ends of rocking arm (10) along back face (13).

2. Valve Rocker Organization as claimed in claim 1, it is characterized in that: the shaft core line of described oil duct (11) is vertical with pitman arm shaft (20).

3. Valve Rocker Organization as claimed in claim 1, it is characterized in that: the outer end of described oil duct (11) extends to the peak place of the back face (13) of rocking arm (10).

4. Valve Rocker Organization as claimed in claim 1 is characterized in that: described oil groove (12) is arranged along the center line of the back face (13) of rocking arm (10).

5. Valve Rocker Organization as claimed in claim 1, it is characterized in that: described oil groove (12) cross section is square or arc.

6. Valve Rocker Organization as claimed in claim 1 is characterized in that: an end of described rocking arm (10) is provided with and the attachment hole of adjusting screw (30) and cooperating, and an end of oil groove (12) extends to this attachment hole.

7. Valve Rocker Organization as claimed in claim 1 is characterized in that: described oil groove (12) continues to carry over rocking arm (10) end sides and arranges downwards after extending to the end that rocking arm (10) links to each other with valve stem.

8. Valve Rocker Organization as claimed in claim 1, it is characterized in that: offer first and second two oil ducts (22,22 ') on the described pitman arm shaft (20), superposed oil duct (22) links to each other with oil duct (11) on the rocking arm (10), the hollow shape tube wall that two oil ducts (22,22 ') run through pitman arm shaft (20) arranges, the hole core of two oil ducts (22,22 ') overlap and with the shaft core line square crossing of pitman arm shaft (20).