CN206942831U - A kind of starting decompressor - Google Patents
A kind of starting decompressor Download PDFInfo
- Publication number
- CN206942831U CN206942831U CN201720637317.5U CN201720637317U CN206942831U CN 206942831 U CN206942831 U CN 206942831U CN 201720637317 U CN201720637317 U CN 201720637317U CN 206942831 U CN206942831 U CN 206942831U
- Authority
- CN
- China
- Prior art keywords
- decompression
- slanted bar
- rocking arm
- control block
- side wall
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
A kind of starting decompressor is the utility model is related to, it includes：Position-arresting disk, camshaft is fixed on, provided with the first slanted bar and the second slanted bar；Rocking arm is depressurized, is rotationally connected with position-arresting disk, its free end sidepiece sets the first control block and the second control block, and the opposite side of two control blocks and the side wall away from side are curved surface, and the radius of curvature of opposite side side wall is less than the radius of curvature away from side side wall；There is gap between the opposite side of two control blocks, driving lever is set in gap；Relief spring；And decompression shaft, it is arranged in decompression axial trough, driving lever is fixed in one end, the other end is decompression end, decompression end is stretched into the middle part of the cam surface of exhaust cam, extending portion is in the arch of axis body circumferential surface sections excision, and the plane of cutout unit forms first side, and the axis body periphery outside cutout unit forms second side；Wherein, the home position of decompression rocking arm is limited when the first control block is resisted against the first slanted bar, the second control block limits the extreme position that decompression rocking arm is swung when being resisted against the second slanted bar.
Description
Technical field
A kind of all-terrain vehicle engine is the utility model is related to, more particularly, to a kind of starting decompressor.
Background technology
The engine in-cylinder pressure of huge discharge is larger, and the burden of motor is big during electrically activating, its frequency to break down
Height, cause difficulty in starting；Therefore, those skilled in the art propose various improved technology schemes, pressure when being started with release,
In these improved technologies, mostly using setting decompressor, such as entitled " engine for possessing decompressor "（Granted publication
Number B of CN 101122247）Public technology shown in scheme；But in actual use, some abnormal conditions be present, such as subtract
Frictional force increases after the long-term use of abrasion with rocking arm contact site of pressure device, jolts, strenuous vibration causes to actuate in decompressor
Situations such as part clamping stagnation of rocking arm, and including technology disclosed above be difficult to provide larger torque in the prior art and
Overcome above-mentioned abnormal conditions, the unstable situation of forming properties.
The content of the invention
The utility model main purpose is to provide a kind of starting decompressor, and it provides larger power using centrifugal force
Square, make the stable performance of decompressor.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：One kind starts decompression
Device, it includes：
Circular position-arresting disk, is fixed on camshaft shaft end, the side wall of disk body is provided with the first slanted bar and the second slanted bar；
Rocking arm is depressurized, the position-arresting disk side wall is rotationally connected with and can swing under the action of the centrifugal force, its free end sidepiece
First control block and the second control block be set, and the opposite side of two control blocks and the side wall away from side are curved surface, and opposite side side
The radius of curvature of wall is less than the radius of curvature away from side side wall；There is gap between the opposite side of two control blocks, set in gap
Driving lever；
Relief spring, promote to depressurize rocking arm reset after centrifugal force weakens or disappears；
And decompression shaft, it is rotatably arranged in the decompression axial trough on camshaft, and described dial is fixed in decompression shaft one end
Bar, the other end are decompression end, and decompression end is stretched into the middle part of the cam surface of exhaust cam, and extending portion is in the bow of axis body circumferential surface sections excision
Shape, the plane of cutout unit form first side, and the axis body periphery outside cutout unit forms second side；
Wherein, limit the home position of decompression rocking arm when the first control block is resisted against the first slanted bar, the second control block against
The extreme position that decompression rocking arm is swung is limited in the second slanted bar.
Therefore, the utility model forms decompressor by driving lever, decompression shaft, decompression rocking arm, relief spring and position-arresting disk,
Make exhaust valve crack in a manner of relief cam withstands exhaust rocker arm, cylinder pressure drop is low to reduce starting torque, reaches engine and rises
Dynamic to be easier, protection starts the purpose of motor；The physical length depressurized in rocking arm as swing arm is longer, is easy to adjust counterweight, and
The first control block and the second control block thereon can form larger torque, and pass to decompression shaft by driving lever, can overcome abrasion,
The situations such as clamping stagnation caused by strenuous vibration, make the stable performance of decompressor；In addition, the opposite side of two control blocks and away from side
Side wall is curved surface, and the radius of curvature of opposite side side wall is less than the structure of the radius of curvature away from side side wall, enhances intensity
Outside, it is curved surface also to make the contact surface of opposite side side wall and driving lever, and relative to slide flexible, further increase decompressor can
By property.
Brief description of the drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Accompanying drawing 2 is the left view of accompanying drawing 1.
Accompanying drawing 3 is the A-A sectional views of accompanying drawing 2.
Accompanying drawing 4 is the B-B cutaway view Amplified images of accompanying drawing 2.
Accompanying drawing 5 is a kind of structural representation of position-arresting disk.
Accompanying drawing 6 is the H-H sectional views of accompanying drawing 5.
Accompanying drawing 7 is a kind of structural representation for depressurizing rocking arm.
Accompanying drawing 8 is the left view of accompanying drawing 7.
Accompanying drawing 9 is enlarged drawing at C in accompanying drawing 7.
Accompanying drawing 10 is that the utility model installs and uses view.
Wherein：1st, position-arresting disk；2nd, relief spring；3rd, rocking arm is depressurized；4th, rocking arm bearing pin is depressurized；5th, decompression shaft；6th, driving lever；7、
Camshaft；8th, timing driven sprocket；11st, the first slanted bar；12nd, the second slanted bar；13rd, long-range groove；14th, short range groove；15th, decompression shaft
Hole；16th, camshaft hole；18th, disk body；19th, spring groove；31st, the first control block；32nd, the second control block；33rd, away from side；34th, phase
Offside；35th, joint face；36th, spring eye；51st, first side；52nd, second side.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：A kind of starting decompressor of the utility model, such as accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 5, accompanying drawing 7, attached
Shown in Fig. 9, accompanying drawing 10, it includes position-arresting disk 1, decompression rocking arm 3, relief spring 2 and decompression shaft 5.Circular position-arresting disk 1 is fixed
In the shaft end of camshaft 7, positioned at the sidepiece of timing driven sprocket 8, the side wall of the disk body 18 of position-arresting disk 1 is provided with the first slanted bar 11 and second
Slanted bar 12.Decompression rocking arm 3 is rotationally connected with the side wall of position-arresting disk 1 by depressurizing rocking arm bearing pin 4, can swing under the action of the centrifugal force；
The free end sidepiece for depressurizing rocking arm 3 sets the first control block 31 and the second control block 32, two the first control blocks of control block 31 and the
The opposite side 34 of two control blocks 32 and the side wall away from side 33 are curved surface, and the radius of curvature of the side wall of opposite side 34 is less than and deviated from
The radius of curvature of the side wall of side 33；There is gap between the opposite side 34 of two control blocks, driving lever 6 is set in gap；First control block
31 and second control block 32 be respectively provided with the connection side wall of the opposite side 34 and joint face 35 away from the side wall of side 33, joint face 35 is flat
Face.Relief spring 2 promotes decompression rocking arm 3 to reset after centrifugal force weakens or disappears, and one end is fixed on spacing by spring groove 19
Disk 1, the other end are fixed on decompression rocking arm 3 by spring eye 36.
As shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 10, decompression shaft 5 is rotatably arranged on camshaft 7
Depressurize in axial trough；Decompression shaft groove is axially extended in the middle part of the cam surface of exhaust cam, and decompression axial trough is the portion of excision exhaust cam
Divide the slot structure of cam surface；Driving lever 6 is fixed in the one end of decompression shaft 5, the other end is decompression end, and the exhaust of camshaft 7 is stretched at decompression end
In the middle part of the cam surface of cam, extending portion is in the arch of axis body circumferential surface sections excision, and the plane of cutout unit forms first side 51, cut
Axis body periphery in addition to portion forms second side 52.When first side 51 turns to decompression axial trough, by the cam not cut off
Outer peripheral face is against exhaust rocker arm；When second side 52 turns to decompression axial trough, by second side 52 against exhaust rocker arm.
As shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, the first control block 31 away from the side wall of side 33 be resisted against the first slanted bar 11 when
Limit decompression rocking arm 3 home position, the second control block 32 away from the side wall of side 33 be resisted against the second slanted bar 12 when limit depressurize
The extreme position that rocking arm 3 is swung.When decompression rocking arm 3 swings to extreme position under the action of the centrifugal force, first side 51 turns to
Depressurize axial trough.
In such scheme, decompression rocking arm sets the first control block and the second control block, less relative with radius of curvature
Side clamps and drives driving lever 6 and decompression shaft 5 rotates, with the contact position away from side with first, second slanted bar that radius of curvature is larger
The beginning and end as swing is put, while making two control blocks that there is higher intensity, is also reduced relative with driving lever
Friction；When being swung due to decompression rocking arm, the first control block and the second control block radially slide with respect to driving lever, therefore opposite side 34
Curved-surface structure, the contact surface for making opposite side side wall and driving lever 6 be curved surface, and relative to slide flexible, abrasion is small, low, the noise of heating
It is small.
As shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 5, accompanying drawing 6, there is convex portion in the middle part of the side wall of disk body 18 of position-arresting disk 1,
Convex portion side wall extension forms the first slanted bar 11 and the second slanted bar 12, is both easy to integrally casting shaping, and slanted bar has higher intensity,
In addition, slanted bar is alternatively arranged as reinforcement, the integrally-built intensity of disk body is enhanced；First slanted bar 11 and the second slanted bar 12 are along disk body
It is radially arranged, is easy to manufacture, also allows for coordinating composition spacing with two control blocks；It is convex between first slanted bar 11 and the second slanted bar 12
Portion sets decompression axis hole 15, and decompression shaft 5 is plugged in the decompression axial trough on decompression axis hole 15 and camshaft 7；Depressurize the sidepiece of axis hole 15
The side wall of convex portion is penetrated, driving lever 6 is fixed on decompression shaft 5 through breakthrough part.Convex portion enhances the intensity of disk body, and the decompression of convex portion
Axis hole 15, the support strength for the decompression shaft shaft end being connected with driving lever is enhanced, avoid decompression shaft shaft end from suspending, so as to prevent shaft end
Radial force deforms.
As shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 7, accompanying drawing 8, decompression rocking arm 3 is in hook, and free end bending extends to
The opposite side of camshaft shaft end is formed；The length of space increase decompression rocking arm 3 is made full use of, so that the first control block 31 and second
Control block 32 obtains larger driving moment, and passes to decompression shaft 5 by driving lever, overcomes decompression shaft 5 and is shaken from decompression
The frictional force of arm.The end two side indent of the decompression rocking arm 3 of relief spring 2 is connected, spring eye 36 is set in recess, makes decompression bullet
The hook end of spring 2 is non-bulging in decompression rocking arm 3 both sides, avoids depressurizing relief spring 2 when rocking arm 3 is swung and produces friction with external devices
And it is damaged.
As shown in accompanying drawing 1, accompanying drawing 3, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8, accompanying drawing 9, the sidepiece of the first slanted bar 11 sets arc
The long-range groove 13 of shape, to accommodate the curved surface sidewall away from side 33 of the first control block 31；The sidepiece of second slanted bar 12 sets arc
Short range groove 14, to accommodate the curved surface sidewall away from side 33 of the second control block 32.Pass through long-range groove 13 and the arc of short range groove 14
Groove face, increase with away from side 33 curved surface sidewall contact area, it is not easily damaged so that decompression rocking arm 3 home position and
Extreme position is more stable, be not easy because away from the curved surface sidewall of side 33 and slanted bar collsion damage and caused by depressurize rocking arm 3 raw bits
Put and offset with extreme position.
The utility model using relief cam, open when rotated by centrifugal action and a series of associated mechanisms control exhaust valve
Open, reach and reduce engine in-cylinder pressure, rotating speed during starting is easily reached so as to engine.It is particularly suitable for big compression ratio to start
Machine uses.
Utility model works process is to start engine process, before rotating speed reaches starting speed, its rotating speed should gradually increase
Add, decompression rocking arm gradually overcomes the pulling force effect of relief spring outwards to throw away, and now driving lever is not enough to stir relief cam rotation
Maximum angle, now relief cam withstand exhaust rocker arm, exhaust valve is in opening.Motor is started then more easily by engine
Shift onto on higher rotating speed.With the rising of rotating speed, decompression rocking arm centrifugal force gradually increases, and it reduces gradually withstands exhaust rocker arm
Height, until completely disengaging exhaust rocker arm.
During actual use, by setting different relief spring elastic force and decompression rocking arm counterweight, the shutdown that can be needed
The engine speed of exhaust valve.Typically it is set in lower 50-70rpm or so than minimum starting speed.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
- A kind of 1. starting decompressor, it is characterised in that including：Circular position-arresting disk（1）, it is fixed on camshaft（7）Shaft end, disk body（18）Side wall be provided with the first slanted bar（11）With second Slanted bar（12）；Depressurize rocking arm（3）, it is rotationally connected with the position-arresting disk（1）Side wall can simultaneously be swung under the action of the centrifugal force, its free end side Portion sets the first control block（31）With the second control block（32）, the opposite side of two control blocks（34）With away from side（33）Side wall it is equal For curved surface, and opposite side（34）The radius of curvature of side wall is less than and deviates from side（33）The radius of curvature of side wall；Two control blocks it is relative Side（34）Between there is gap, driving lever is set in gap（6）；Relief spring（2）, promote to depressurize rocking arm after centrifugal force weakens or disappears（3）Reset；And decompression shaft（5）, it is rotatably arranged in camshaft（7）On decompression axial trough in, decompression shaft（5）Institute is fixed in one end State driving lever（6）, the other end be decompression end, decompression end is stretched into the middle part of the cam surface of exhaust cam, and extending portion is in axis body circumferential surface sections The arch of excision, the plane of cutout unit form first side（51）, the axis body periphery outside cutout unit forms second side （52）；Wherein, the first control block（31）It is resisted against the first slanted bar（11）When limit decompression rocking arm（3）Home position, second control Block（32）It is resisted against the second slanted bar（12）When limit decompression rocking arm（3）The extreme position of swing.
- A kind of 2. starting decompressor according to claim 1, it is characterised in that：The disk body（18）Have in the middle part of side wall Convex portion, the extension of convex portion side wall form the first slanted bar（11）With the second slanted bar（12）, the first slanted bar（11）With the second slanted bar（12）Edge Disk body is radially arranged；First slanted bar（11）With the second slanted bar（12）Between convex portion set decompression axis hole（15）, the decompression shaft（5） It is plugged on decompression axis hole（15）And camshaft（7）On decompression axial trough in；Depressurize axis hole（15）Sidepiece penetrates the side wall of convex portion, institute State driving lever（6）The decompression shaft is fixed on through breakthrough part（5）.
- A kind of 3. starting decompressor according to claim 1, it is characterised in that：Connect the relief spring（2）Subtract Press rocking arm（3）End two side indent, set spring eye in recess（36）.
- A kind of 4. starting decompressor according to claim 1, it is characterised in that：The decompression rocking arm（3）In hook, from The opposite side that camshaft shaft end is extended to by end bending is formed.
- 5. according to a kind of starting decompressor described in claim 1 or 2 or 3 or 4, it is characterised in that：First slanted bar （11）Sidepiece sets the long-range groove of arc（13）, to accommodate the first control block（31）Deviate from side（33）Curved surface sidewall；Second Slanted bar（12）Sidepiece sets the short range groove of arc（14）, to accommodate the second control block（32）Deviate from side（33）Curved surface sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637317.5U CN206942831U (en) | 2017-06-02 | 2017-06-02 | A kind of starting decompressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637317.5U CN206942831U (en) | 2017-06-02 | 2017-06-02 | A kind of starting decompressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206942831U true CN206942831U (en) | 2018-01-30 |
Family
ID=61362663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720637317.5U Withdrawn - After Issue CN206942831U (en) | 2017-06-02 | 2017-06-02 | A kind of starting decompressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206942831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026258A (en) * | 2018-08-16 | 2018-12-18 | 广州大运机车有限公司 | A kind of decompressor of engine |
| JP2020063727A (en) * | 2018-10-19 | 2020-04-23 | スズキ株式会社 | Decompression device |
| CN113914964A (en) * | 2021-11-03 | 2022-01-11 | 江门市大长江集团有限公司 | Engine and decompression rocker arm positioning mechanism |
-
2017
- 2017-06-02 CN CN201720637317.5U patent/CN206942831U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026258A (en) * | 2018-08-16 | 2018-12-18 | 广州大运机车有限公司 | A kind of decompressor of engine |
| JP2020063727A (en) * | 2018-10-19 | 2020-04-23 | スズキ株式会社 | Decompression device |
| JP7225667B2 (en) | 2018-10-19 | 2023-02-21 | スズキ株式会社 | Decompression device |
| CN113914964A (en) * | 2021-11-03 | 2022-01-11 | 江门市大长江集团有限公司 | Engine and decompression rocker arm positioning mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206942831U (en) | A kind of starting decompressor | |
| JP4904144B2 (en) | Starting method and apparatus for an internal combustion engine | |
| CN100350140C (en) | Valve operating system for internal combustion engine | |
| WO2007095042A3 (en) | Rotary internal combustion engine | |
| JP2009243462A (en) | Variable compression ratio device | |
| EP2388446A8 (en) | Valve timing control apparatus | |
| CN107246295A (en) | A kind of starting decompressor | |
| JP5333544B2 (en) | Hydraulic valve timing adjustment device | |
| JP4961397B2 (en) | Engine crankshaft structure | |
| CN104847441A (en) | Decompressor of internal combustion engine | |
| CN203962387U (en) | Refrigerating circulatory device and rotary compressor thereof | |
| US10385933B2 (en) | Freewheel and freewheel arrangement comprising such a freewheel | |
| CN1499060A (en) | Variable reduction ratio enqine | |
| TWM580123U (en) | Decompression device of internal combustion engine | |
| CN1159529C (en) | Scrawl compressor | |
| JP2005291103A (en) | Internal combustion engine | |
| CN104755790A (en) | Spiral spring | |
| CN206346796U (en) | The mechanism of decompressor of engine | |
| JP2007231909A (en) | Variable valve gear of internal combustion engine | |
| CN202832685U (en) | Engine and camshaft thereof | |
| CN2791283Y (en) | Variable compression reatio type engine | |
| CN207064242U (en) | A kind of new pumping configuration | |
| CN201241741Y (en) | Engine cam axle assembly with pressure relief valve | |
| KR101510321B1 (en) | Variable compression ratio apparatus | |
| JP2000265979A5 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180130 Effective date of abandoning: 20180416 |