CN207131456U - A kind of general gasoline engines Rellef cam shaft - Google Patents
A kind of general gasoline engines Rellef cam shaft Download PDFInfo
- Publication number
- CN207131456U CN207131456U CN201721036948.8U CN201721036948U CN207131456U CN 207131456 U CN207131456 U CN 207131456U CN 201721036948 U CN201721036948 U CN 201721036948U CN 207131456 U CN207131456 U CN 207131456U
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- CN
- China
- Prior art keywords
- driven gear
- camshaft
- cam
- decompression block
- gasoline engines
- 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.)
- Expired - Fee Related
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- 230000006837 decompression Effects 0.000 claims abstract description 37
- 125000006850 spacer group Chemical group 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 14
- 238000005119 centrifugation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses a kind of general gasoline engines Rellef cam shaft, including camshaft and admission cam, exhaust cam, driven gear, decompression block, the camshaft, the admission cam, the exhaust cam and the decompression block are integrally machined shaping, the driven gear key connection is in one end of the camshaft, the decompression block is located between the exhaust cam and the driven gear, and a section is machined with the decompression block, fix finite place piece by depressurizing rivet on the section；It is additionally provided with to dial on the decompression block and turns；To sum up, the beneficial effects of the utility model are：Using the structure of the chute and the spacer pin, the centrifuge arm running track can be limited, improves the stability of decompression；Shaping is integrally machined using the camshaft, the admission cam, the exhaust cam and the decompression block, it is easy to process, processing efficiency is effectively raised, reduces production cost.
Description
Technical field
It the utility model is related to camshaft design design field, and in particular to a kind of general gasoline engines Rellef cam shaft.
Background technology
Camshaft is a part in piston engine.Its effect is to control unlatching and the closed action of valve.
When general gasoline engines are pneumatic, for its startup, more smoothly general use is provided with cylinder decompressor, mesh on general gasoline engines
Before be that pressure-reducing valve is installed on the timing driven gear wheel of camshaft, but when in use, current pressure-reducing valve centrifuge arm movable end
It is only spacing to the progress of centrifuge arm initial position by locating part, it will be caused convex away from driven gear using centrifuge arm for a long time
The decompression performance of wheel shaft reduces, and in the operation of centrifuge arm, it is impossible to moved according to fixed track, pressure-reducing valve decompression is unstable
Fixed, therefore, we design a kind of general gasoline engines Rellef cam shaft.
Utility model content
The purpose of this utility model is that to solve the above problems and provides a kind of general gasoline engines Rellef cam shaft,
The Rellef cam shaft may be limited to stable, the raising of centrifuge arm in cam use using the structure of chute and spacer pin
The stability of decompression, and the distance between centrifuge arm and driven gear are limited using spacer pin, ensure the performance of Rellef cam shaft
It is stable.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of general gasoline engines Rellef cam shaft, including camshaft and admission cam, exhaust cam, driven gear, subtract
Briquetting, the camshaft, the admission cam, the exhaust cam and the decompression block are integrally machined shaping, the driven tooth
Key connection is taken turns in one end of the camshaft, the decompression block is located between the exhaust cam and the driven gear, and institute
State and be machined with a section on decompression block, finite place piece is fixed by depressurizing rivet on the section；Also set on the decompression block
Have to dial and turn；
Centrifuge arm is installed on the surface of the driven gear, neck, chute and pocket for the punch head are offered on the centrifuge arm,
The neck is located at the movable end of the centrifuge arm, and the both sides of the neck are provided with shift fork, and described group is turned the insertion neck
It is interior；A return spring is additionally provided with the driven gear, one end of the return spring is connected by linking up with the pocket for the punch head, separately
One end is by linking up with and the spring rivet interlacement on driven gear；The fixing end of the centrifuge arm is connected by bearing pin and driven gear
Connect；Position corresponding with the chute is provided with spacer pin.
Preferably, the centrifuge arm is hook type, along the bending curvature of exhaust cam basic circle, and the cam is bypassed
Axle；
The chute is deep-slotted chip breaker, and the end diameter of the spacer pin is more than the width of the chute.
Preferably, the neck is U-type groove, the described group of end turned is square structure, and the square structure inserts
In the U-type groove.
Preferably, the projection of the decompression block outer rim is higher than exhaust cam basic circle 1.25mm-1.45mm.
Preferably, the centrifuge arm includes centrifugation arm body, connecting portion and bending section, the connecting portion in it is described from
The fixing end of central arm, and the connecting portion is provided with through hole, is fixed connecting portion and driven gear by bearing pin；The connecting portion with
Bending section is provided between the centrifugation arm body, the bending section bends towards the direction away from the driven gear；The chute is located at
The centrifuge arm body part.
Preferably, the centrifugation arm body is provided with some friction protrusions close to the side of the driven gear, it is described to rub
Projection is wiped to be made of nylon material.
Preferably, the driven gear is made of nylon material.
Using said structure, in the process of running, the camshaft drives the decompression block to rotate to the camshaft, this
When, described group is turned and is placed in the neck, stirs the shift fork, slides direction centrifugation of the centrifuge arm along the chute, institute
The sliding distance of centrifuge arm can be limited by stating spacer pin, and the spacer pin can be limited between centrifuge arm and the driven gear
Distance, ensure the decompression performance of camshaft；When centrifuge arm slides into the end of the chute, in the effect of the return spring
Under, the centrifuge arm is returned to initial position；Using the camshaft, the admission cam, the exhaust cam and described subtract
Briquetting is integrally machined shaping, in processing, it is only necessary to processes an end face of the decompression block, can improve processing efficiency, reduce
Cost.
To sum up, the beneficial effects of the utility model are：Using the structure of the chute and the spacer pin, can limit
The centrifuge arm running track, improve the stability of decompression；Using the camshaft, the admission cam, the exhaust cam
Shaping is integrally machined with the decompression block, it is easy to process, processing efficiency is effectively raised, reduces production cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is facing structure figure of the present utility model；
Fig. 2 is Fig. 1 D-D direction structure views；
Fig. 3 be Fig. 1 M to topology view.
Description of reference numerals is as follows：
1st, camshaft；2nd, admission cam；3rd, exhaust cam；4th, rivet is depressurized；5th, driven gear；6th, centrifuge arm；61st, centrifuge
Arm body；62nd, friction protrusion；63rd, bending section；64th, connecting portion；65th, chute；66th, pocket for the punch head；7th, bearing pin；8th, spacer pin；9th, dial
Turn；10th, neck；11st, shift fork；12nd, locating part；13rd, section；14th, block is depressurized；15th, exhaust cam basic circle；16th, link up with；17、
Return spring；18th, spring rivet.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only the utility model part of the embodiment, rather than whole implementation
Example.Based on the embodiment in the present invention, obtained by those of ordinary skill in the art are not on the premise of creative work is made
All other embodiment, belong to the scope protected of the present invention.
Referring to shown in Fig. 1-Fig. 3, the utility model provides a kind of general gasoline engines Rellef cam shaft, including camshaft 1
And admission cam 2, exhaust cam 3, driven gear 5, decompression block 14, the camshaft 1, the admission cam 2, the exhaust
Cam 3 and the decompression block 14 are integrally machined shaping, can improve processing efficiency using the structure for being integrally machined shaping, and only need
A section 13 is processed on decompression block 14, it is easy to process, the key connection of driven gear 5 in one end of the camshaft 1,
The decompression block 14 is located between the exhaust cam 3 and the driven gear 5, and is machined with one on the decompression block 14 and is cut flat with
Face 13, fixes finite place piece 12 on the section 13 by depressurizing rivet 4, and the locating part 12 can limit the centrifuge arm 6
Initial position；It is additionally provided with to dial on the decompression block 14 and turns 9, described group is turned 9 and can stir centrifuge arm 6；
Centrifuge arm 6 is installed on the surface of the driven gear 5, neck 10, the and of chute 65 are offered on the centrifuge arm 6
Pocket for the punch head 66, the neck 10 is located at the movable end of the centrifuge arm 6, and the both sides of the neck 10 are provided with shift fork 11, described
Dial and turn in the 9 insertions neck 10, described group is turned 9 and stir shift fork 11 and rotate centrifuge arm 6；It is additionally provided with the driven gear 5
One return spring 17, one end of the return spring 17 are connected by hook 16 with the pocket for the punch head 66, and the other end passes through hook 16
It is connected with the spring rivet 18 on driven gear 5, by return spring 17, centrifuge arm 6 can be returned to home position；It is described
The fixing end of centrifuge arm 6 is connected by bearing pin 7 with driven gear 5；Spacer pin 8, institute are provided with the 65 corresponding position of chute
The sliding scale and the distance between the centrifuge arm 6 and driven gear 5 of centrifuge arm 6 can be limited by stating spacer pin 8, improve decompression
Stability.
Preferably, the centrifuge arm 6 is hook type, along the bending curvature of exhaust cam basic circle 15, and around described
Camshaft 1；Further, the chute 65 is deep-slotted chip breaker, and the end diameter of the spacer pin 8 is more than the width of the chute 65
Degree, the distance between long-time use of centrifuge arm 6 and driven gear 5 can be avoided to increase.
9 stuck to avoid turning described group, preferably, the neck 10 is U-type groove, the described group of end for turning 9 is side
Shape structure, and the square structure is inserted in the U-type groove；The projection of the decompression outer rim of block 14 is higher than exhaust cam basic circle
151.25mm-1.45mm。
Further, the centrifuge arm 6 includes centrifugation arm body 61, connecting portion 64 and bending section 63, the connecting portion 64
Positioned at the fixing end of the centrifuge arm 6, and the connecting portion 64 is provided with through hole, by bearing pin 7 by connecting portion 64 and driven gear 5
It is fixed；Bending section 63 is provided between the connecting portion 64 and the centrifugation arm body 61, the bending section 63 makes the centrifuge arm
Body 61 is away from driven gear 5, the friction between reduction, and the centrifuge arm 6 slides more flexible；The bending section 63 bends towards remote
The direction of the driven gear 5；The chute 65 is located at centrifugation arm body 61 part.
Preferably, the centrifugation arm body 61 is provided with some friction protrusions 62, institute close to the side of the driven gear 5
State friction protrusion 62 and be made of nylon material, the friction protrusion 62 can contact with driven gear 5, and with the driven tooth
It is point friction between wheel 5, improves performance；Further, the driven gear 5 is made of nylon material.
Using said structure, in the process of running, the camshaft 1 drives the decompression block 14 to rotate to the camshaft 1,
Now, described group is turned 9 and is placed in the neck 10, stirs the shift fork 11, make direction of the centrifuge arm 6 along the chute 65 from
The heart slides, and the spacer pin 8 can limit the sliding distance of centrifuge arm 6, and the spacer pin 8 can limit centrifuge arm 6 and institute
The distance between driven gear 5 is stated, ensures the decompression performance of camshaft 1；When centrifuge arm 6 slides into the end of the chute 65,
In the presence of the return spring 17, the centrifuge arm 6 is returned to initial position；It is convex using the camshaft 1, the air inlet
Wheel 2, the exhaust cam 3 and the decompression block 14 are integrally machined shaping, in processing, it is only necessary to process the one of the decompression block 14
Individual end face, processing efficiency can be improved, reduces cost.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model requires protection scope
Defined by appended claims and its effect thing.
Claims (7)
- A kind of 1. general gasoline engines Rellef cam shaft, it is characterised in that：It is convex including camshaft (1) and admission cam (2), exhaust Take turns (3), driven gear (5), decompression block (14), the camshaft (1), the admission cam (2), the exhaust cam (3) and The decompression block (14) is integrally machined shaping, and driven gear (5) key connection is described to subtract in one end of the camshaft (1) Briquetting (14) is located between the exhaust cam (3) and the driven gear (5), and is machined with all on the decompression block (14) Plane (13), by depressurizing the fixed finite place piece (12) of rivet (4) on the section (13)；It is additionally provided with the decompression block (14) Dial and turn (9)；Centrifuge arm (6) is installed on the surface of the driven gear (5), neck (10), chute are offered on the centrifuge arm (6) (65) and pocket for the punch head (66), the neck (10) is located at the movable end of the centrifuge arm (6), and the both sides of the neck (10) are set There is shift fork (11), described group is turned (9) and inserted in the neck (10)；A return spring is additionally provided with the driven gear (5) (17), one end of the return spring (17) is connected by linking up with (16) with the pocket for the punch head (66), and the other end is by linking up with (16) It is connected with the spring rivet (18) on driven gear (5)；The fixing end of the centrifuge arm (6) passes through bearing pin (7) and driven gear (5) connect；Position corresponding with the chute (65) is provided with spacer pin (8).
- A kind of 2. general gasoline engines Rellef cam shaft according to claim 1, it is characterised in that：The centrifuge arm (6) is Hook type, along the bending curvature of exhaust cam basic circle (15), and bypass the camshaft (1)；The chute (65) is deep-slotted chip breaker, and the end diameter of the spacer pin (8) is more than the width of the chute (65).
- A kind of 3. general gasoline engines Rellef cam shaft according to claim 2, it is characterised in that：The neck (10) is U Type groove, the described group of end for turning (9) is square structure, and the square structure is inserted in the U-type groove.
- A kind of 4. general gasoline engines Rellef cam shaft according to claim 1, it is characterised in that：The decompression block (14) is outside The projection of edge is higher than exhaust cam basic circle (15) 1.25mm-1.45mm.
- A kind of 5. general gasoline engines Rellef cam shaft according to claim 1, it is characterised in that：Centrifuge arm (6) bag Include centrifugation arm body (61), connecting portion (64) and bending section (63), the connecting portion (64) and be located at the fixation of the centrifuge arm (6) End, and the connecting portion (64) is provided with through hole, it is by bearing pin (7) that connecting portion (64) and driven gear (5) is fixed；The connection Bending section (63) are provided between portion (64) and the centrifugation arm body (61), the bending section (63) is bent towards away from the driven gear (5) direction；The chute (65) is located at described centrifugation arm body (61) part.
- A kind of 6. general gasoline engines Rellef cam shaft according to claim 5, it is characterised in that：The centrifugation arm body (61) some friction protrusions (62) are provided with close to the side of the driven gear (5), the friction protrusion (62) uses nylon material Material is made.
- A kind of 7. general gasoline engines Rellef cam shaft according to claim 1, it is characterised in that：The driven gear (5) It is made of nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036948.8U CN207131456U (en) | 2017-08-18 | 2017-08-18 | A kind of general gasoline engines Rellef cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036948.8U CN207131456U (en) | 2017-08-18 | 2017-08-18 | A kind of general gasoline engines Rellef cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131456U true CN207131456U (en) | 2018-03-23 |
Family
ID=61635452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721036948.8U Expired - Fee Related CN207131456U (en) | 2017-08-18 | 2017-08-18 | A kind of general gasoline engines Rellef cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384683A (en) * | 2018-07-05 | 2021-02-19 | 本田技研工业株式会社 | Decompression device of engine and engine |
-
2017
- 2017-08-18 CN CN201721036948.8U patent/CN207131456U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384683A (en) * | 2018-07-05 | 2021-02-19 | 本田技研工业株式会社 | Decompression device of engine and engine |
| CN112384683B (en) * | 2018-07-05 | 2022-08-02 | 本田技研工业株式会社 | Decompression device of engine and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 |