CN104806315A - Novel positioning mechanism for air feeding rocker arm shaft - Google Patents
Novel positioning mechanism for air feeding rocker arm shaft Download PDFInfo
- Publication number
- CN104806315A CN104806315A CN201510141406.6A CN201510141406A CN104806315A CN 104806315 A CN104806315 A CN 104806315A CN 201510141406 A CN201510141406 A CN 201510141406A CN 104806315 A CN104806315 A CN 104806315A
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- CN
- China
- Prior art keywords
- arm shaft
- air feeding
- positioning
- rocker arm
- support body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Valve-Gear Or Valve Arrangements (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a novel positioning mechanism for an air feeding rocker arm shaft. The mechanism comprises a cam shaft supporting body, and an air feeding rocker arm shaft which is mounted in an air feeding rocker shaft mounting hole, wherein the air feeding rocker arm shaft is positioned into a mounting hole in a supporting vertical column between two cylinders on an integral cam shaft supporting body through two positioning bolts; two positioning holes are formed in one surface of the top surface of the cam shaft supporting body, far away from cylinder covers; the positioning bolts pass through the positioning holes in the top surface of the cam shaft supporting body to engage and be connected with an air feeding rocker arm shaft. The mechanism has the advantages and benefits that a sealing structure between the matching contact surfaces of the cam shaft supporting body and the cylinder covers is easily arranged; the problem of space for an air feeding rocker arm shaft positioning mechanism is out of consideration; the positioning mechanism is arranged at the upper part, instead of the lower part, so that the problem of poor engine oil sealing can be solved well; the two positioning bolts or pins solve the problem that single bolt is difficult to achieve positioning reliability, namely, the horizontality of the air feeding rocker arm shaft.
Description
Technical field
The invention belongs to engine components technical field, especially relate to a kind of novel gas inlet pitman arm shaft positioning means.
Background technique
In prior art, the motor that structure is compacter, because cylinder bore and cylinder core distance are all less, according to one-piece camshaft support and monomer-type air cylinder head structure, then intake rocker axle must be fixedly mounted in the intake rocker axle mounting hole of camshaft support body, when solving intake rocker axle orientation problem, mostly position structure being designed in camshaft support body bottom surface, namely coordinating with cylinder head the one side contacted.
Adopt this position structure, it is only the functional requirement tentatively meeting pitman arm shaft location, because cylinder bore and cylinder core distance are all less, structure is compact again, exist following not enough: one is cause camshaft support body to coordinate sealing configuration between surface of contact, i.e. O type rubber seal difficult arrangement with cylinder head; Two is be monomer-type cylinder head due to what adopt, arranges the positioning means of intake rocker, machine oil can be caused poorly sealed, form the problem of evaporating, emitting, dripping or leaking of liquid or gas between two cylinders; Three is the limitations due to compact structure, makes this position structure can only arrange a holding down bolt or pin, easily causes intake rocker axle tilted in hole, out-of-level after installation.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of novel gas inlet pitman arm shaft positioning means, is applicable to the engine structure installing fixing intake rocker axle on camshaft support body.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of novel gas inlet pitman arm shaft positioning means, comprises the intake rocker axle installed in camshaft support body and its upper air pitman arm shaft mounting hole; Described intake rocker axle is positioned in the mounting hole between two cylinders on all-in-one-piece camshaft support body on support post by two holding down bolts, the end face of described camshaft support body, namely the one side away from cylinder head is provided with two positioning holes, and described holding down bolt is connected by thread engagement with intake rocker axle through the positioning hole of camshaft support body end face.
Further, the spiral shell head on described holding down bolt and be also provided with clamping pad between camshaft support body end face, the spiral shell head of holding down bolt and the clamping pad of below are pressed on positioning hole end face by screw thread.
The advantage that the present invention has and good effect are:
Camshaft support body coordinates the sealing configuration between surface of contact more easily to arrange with cylinder head, no longer need to consider that positioning mechanism of air suction swing arm shaft arranges the problem in shared space;
Positioning means changes top into by arranged beneath and arranges, solves the problem that machine oil is poorly sealed preferably;
The design of two holding down bolts or pin solves the reliability of positioning that single bolt is difficult to realize, i.e. the horizontality problem of intake rocker axle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
1-camshaft support body, 2-holding down bolt, 3-clamping pad, 4-intake rocker axle, 5-sealing configuration.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
A kind of novel gas inlet pitman arm shaft positioning means, as shown in Figure 1, comprises the intake rocker axle 4 installed in camshaft support body 1 and its upper air pitman arm shaft mounting hole; Described intake rocker axle 4 is positioned in the mounting hole between two cylinders on all-in-one-piece camshaft support body 1 on support post by two holding down bolts 2, the end face of described camshaft support body 1, namely the one side away from cylinder head is provided with two positioning holes, and described holding down bolt 2 is connected by thread engagement with intake rocker axle 4 through the positioning hole of camshaft support body 1 end face; The top that positioning hole is arranged on camshaft support body 1 is arranged, solve the problem that machine oil is poorly sealed preferably, more easily arrange that camshaft support body 1 coordinates the sealing configuration 5 between surface of contact with cylinder head simultaneously, no longer need to consider that positioning mechanism of air suction swing arm shaft arranges the problem in shared space.
Also be provided with clamping pad 3 between six side's spiral shell heads on holding down bolt 2 described in the embodiment of the present invention and camshaft support body 1 end face, the spiral shell head of holding down bolt 2 and the clamping pad 3 of below are pressed on positioning hole end face by screw thread, effectively achieve the machine oil sealing in cylinder head.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (2)
1. a novel gas inlet pitman arm shaft positioning means, comprises the intake rocker axle installed in camshaft support body and its upper air pitman arm shaft mounting hole; It is characterized in that: described intake rocker axle is positioned in the mounting hole between two cylinders on all-in-one-piece camshaft support body on support post by two holding down bolts, the end face of described camshaft support body, namely the one side away from cylinder head is provided with two positioning holes, and described holding down bolt is connected by thread engagement with intake rocker axle through the positioning hole of camshaft support body end face.
2. novel gas inlet pitman arm shaft positioning means according to claim 1, it is characterized in that: the spiral shell head on described holding down bolt and be also provided with clamping pad between camshaft support body end face, the spiral shell head of holding down bolt and the clamping pad of below are pressed on positioning hole end face by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141406.6A CN104806315A (en) | 2015-03-27 | 2015-03-27 | Novel positioning mechanism for air feeding rocker arm shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141406.6A CN104806315A (en) | 2015-03-27 | 2015-03-27 | Novel positioning mechanism for air feeding rocker arm shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806315A true CN104806315A (en) | 2015-07-29 |
Family
ID=53691463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510141406.6A Pending CN104806315A (en) | 2015-03-27 | 2015-03-27 | Novel positioning mechanism for air feeding rocker arm shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806315A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0263734B1 (en) * | 1986-10-01 | 1990-04-25 | Automobiles Peugeot | Rocker arm arrangement on an internal-combustion engine cylinder head |
| JPH0842312A (en) * | 1994-08-01 | 1996-02-13 | Nissan Motor Co Ltd | Rocker shaft supporting structure of engine |
| CN2555403Y (en) * | 2002-01-28 | 2003-06-11 | 重庆宗申技术开发研究有限公司 | Down rocker accurate positioner of bottom cam type engine |
| CN2705614Y (en) * | 2004-03-17 | 2005-06-22 | 重庆力帆实业（集团）有限公司 | Bottom fixed cam-type cylinder device of 200 ml water cool engine |
| CN201560814U (en) * | 2009-11-13 | 2010-08-25 | 重庆宗申发动机制造有限公司 | Positioning structure of rocker arm shaft for underneath cam type engine |
| CN102140942A (en) * | 2010-12-31 | 2011-08-03 | 中国兵器工业集团第七○研究所 | Positioning mechanism of air suction swing arm shaft |
-
2015
- 2015-03-27 CN CN201510141406.6A patent/CN104806315A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0263734B1 (en) * | 1986-10-01 | 1990-04-25 | Automobiles Peugeot | Rocker arm arrangement on an internal-combustion engine cylinder head |
| JPH0842312A (en) * | 1994-08-01 | 1996-02-13 | Nissan Motor Co Ltd | Rocker shaft supporting structure of engine |
| CN2555403Y (en) * | 2002-01-28 | 2003-06-11 | 重庆宗申技术开发研究有限公司 | Down rocker accurate positioner of bottom cam type engine |
| CN2705614Y (en) * | 2004-03-17 | 2005-06-22 | 重庆力帆实业（集团）有限公司 | Bottom fixed cam-type cylinder device of 200 ml water cool engine |
| CN201560814U (en) * | 2009-11-13 | 2010-08-25 | 重庆宗申发动机制造有限公司 | Positioning structure of rocker arm shaft for underneath cam type engine |
| CN102140942A (en) * | 2010-12-31 | 2011-08-03 | 中国兵器工业集团第七○研究所 | Positioning mechanism of air suction swing arm shaft |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |