CN208686447U - A kind of non-backpulsing decompressor of motorcycle engine - Google Patents
A kind of non-backpulsing decompressor of motorcycle engine Download PDFInfo
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- CN208686447U CN208686447U CN201821511444.1U CN201821511444U CN208686447U CN 208686447 U CN208686447 U CN 208686447U CN 201821511444 U CN201821511444 U CN 201821511444U CN 208686447 U CN208686447 U CN 208686447U
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- block
- rid
- camshaft
- decompressor
- rocker arm
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Abstract
The utility model provides a kind of non-backpulsing decompressor of motorcycle engine, belongs to technical field of engines.It solves the technical problems such as decompressor is ineffective of existing motorcycle engine.This motorcycle engine includes exhaust valve, rocker arm shaft, the rocker arm that is connected to rocker arm shaft and can swing, one end of rocker arm is connected with exhaust valve upper end, spring is arranged on exhaust valve, decompressor includes the camshaft that can be rotated, the exhaust cam that can be leant with the other end of rocker arm is installed on camshaft, it is also arranged on camshaft and gets rid of block, get rid of the side that block is located at exhaust cam, the side of exhaust cam is installed with towards the decompression pin and connecting pin for getting rid of block, connecting pin is equipped with torsional spring and the both ends of torsional spring are respectively acting on camshaft and get rid of on block, the end for getting rid of block is connected with decompression pin.Decompressor in the utility model can when engine just starts continual reduction in pressure, effect it is good.
Description
Technical field
The utility model belongs to technical field of engines, is related to a kind of decompressor of engine, especially a kind of motor
The non-backpulsing decompressor of car engine.
Background technique
The starting of motorcycle engine is to rotate to realize with dynamic crankshaft by starting axis or starting motor.Due to motor
It will drive piston simultaneously when car engine crankshaft rotates to move back and forth in cylinder, the gas in piston meeting compression cylinder,
When piston motion is to close to top dead centre, residual gas can generate biggish reaction force to piston in cylinder, to make to start
Machine start when it is relatively elaborate, while this reaction force to starting motor and other activation system components service life have it is bigger
Influence.
In order to achieve the purpose that on startup reduce inner pressure of air cylinder, make to start it is more convenient, to extend activation system zero
Component life, common motorcycle engine are equipped with pressure reducing valve on cylinder head generally to reduce the pressure in cylinder, reduce piston
The resistance of motion.
It is convex that China's patent (notification number: CN201661330U, the day for announcing: 2010-12-01) discloses a kind of engine decompression
It takes turns, including camshaft, cam is provided on camshaft, camshaft and the integral manufacture of cam are processed, and at least a cam is in low level
Aperture is equipped at position, aperture is provided with removable pin, and the inner hollow of camshaft is simultaneously equipped with mandrel, and mandrel is corresponding to aperture
Fluting is provided at position, removable pin is equipped with annular groove, and removable pin is installed in the fluting of mandrel using the annular groove, and mandrel is in correspondence
In the side of aperture be equipped with can curved surface by removable pin toward extrapolation, the other end of mandrel be equipped with taper briquetting, taper briquetting with
It is provided with activity between camshaft mandrel end and gets rid of block, the lower part that block is got rid of in activity is equipped with the indent adaptable with the tapered surface of taper briquetting
Curved surface, activity get rid of block by bushing axially position；Taper briquetting is installed on mandrel end section by snap ring；The front end setting of mandrel fluting
There is the wide aperture being adapted with removable pin diameter.
Although the engine pressure reduction structure in above patent document can play certain depressurization, block is got rid of in activity
It is easy for centrifugation in engine start to throw away, depressurization is just lost in time of engine low speed, so as to cause subtracting
Press effect inadequate.
Summary of the invention
The utility model aiming at the above problems existing in the prior art, provides a kind of non-backpulsing of motorcycle engine
Decompressor, the technical problem to be solved by the utility model is to how to make motorcycle engine more laborsaving on startup.
The utility model aim can be realized by the following technical scheme:
A kind of non-backpulsing decompressor of motorcycle engine, motorcycle engine includes exhaust valve, rocker arm shaft, connection
In rocker arm shaft and the rocker arm that can swing, one end of the rocker arm is connected with the exhaust valve upper end, covers on the exhaust valve
Equipped with spring, which is characterized in that the decompressor includes the camshaft that can be rotated, and being installed on the camshaft can be with
The exhaust cam that the other end of the rocker arm leans also is arranged on the camshaft and gets rid of block, and the block that gets rid of is located at the row
The side of gas cam, the side of the exhaust cam are installed with the decompression pin and connecting pin that block is got rid of described in, the connecting pin
Be equipped with torsional spring and the torsional spring both ends be respectively acting on the camshaft and it is described get rid of on block, the end for getting rid of block and institute
Decompression pin is stated to be connected.
The principle is as follows: engine is in stationary state: at this time since the elastic force of torsional spring acts on, so that subtracting on exhaust cam
Pressing is higher than the basic circle of exhaust cam, will push rocker arm and rotates certain angle, so that exhaust valve release inner pressure of air cylinder is opened,
To play depressurization.In engine start: in the initial stage, after engine start, revolving speed in 0-500r/min, this
When get rid of block and can generate centrifugal force effect, since revolving speed is lower, centrifugal force is also less than the torsion of torsional spring, on exhaust cam decompression pin according to
So it is higher than the basic circle of exhaust cam, still will push rocker arm rotation, so that exhaust valve release inner pressure of air cylinder is opened, to continue
Play depressurization.Then it is higher than the 500r/min stage in revolving speed, the torsion for being greater than torsional spring due to getting rid of block centrifugal force at this time passes through
The finger rotation decompression pin on block is got rid of, promotes decompression on exhaust cam to sell the basic circle for being lower than exhaust cam, rocker arm can not be pushed to turn
It is dynamic, it is fail to open exhaust valve, depressurization failure, exhaust valve works normally.This decompressor structure is simple, can ensure that engine
Revolving speed is depressurized in 1000rpm or less continuous and effective, and effect of easing stress is more preferable, makes foot starting more easily laborsaving, while also effectively being extended
Start the service life of motor and storage battery.
In the non-backpulsing decompressor of above-mentioned motorcycle engine, the decompression pin and connecting pin are symmetricly set on
The same side of the exhaust cam；The block that gets rid of is in that non-close annular is looped around the camshaft periphery, described one end for getting rid of block
It is rotatably connected on the connecting pin, the other end for getting rid of block is installed with the finger towards the exhaust cam, described to subtract
Have on the end face of pressing along the radial movable groove to be extended internally by its circumferential surface of decompression pin, the finger is plugged in the activity
In groove.
In the non-backpulsing decompressor of above-mentioned motorcycle engine, the torsional spring is set on the connecting pin,
The torsional spring is got rid of between block and the exhaust cam described in being located at, and the block that gets rid of has installation aperture on the side of close end,
One end of the torsional spring is resisted against on the outer peripheral surface of the camshaft, and the other end of the torsional spring is plugged in the installation aperture
It is interior.
In the non-backpulsing decompressor of above-mentioned motorcycle engine, at least two peaces are additionally provided on the camshaft
Bearing is filled, two installation bearing spacer settings, the end of the camshaft is equipped with flange.
In the non-backpulsing decompressor of above-mentioned motorcycle engine, one of them described installation bearing is got rid of with described
Thrust washer is equipped between block.
Compared with prior art, the decompressor structure in the utility model is simple, can ensure that engine speed exists
The decompression of 1000rpm or less continuous and effective, effect of easing stress is more preferable, makes foot starting more easily laborsaving, while also effectively extending and starting electricity
The service life of machine and storage battery.
Detailed description of the invention
Fig. 1 is that this decompressor installs and uses structural schematic diagram.
Fig. 2 is the configuration schematic diagram of this decompressor.
Fig. 3 is the schematic cross-sectional view of this decompressor.
Fig. 4 is structural schematic diagram of this decompressor when engine is static.
Fig. 5 is structural schematic diagram of this decompressor when engine speed reaches 500r/min or more.
In figure, 1, exhaust valve；2, rocker arm shaft；3, rocker arm；4, spring；5, camshaft；6, exhaust cam；7, block is got rid of；71, pacify
Fill aperture；8, decompression pin；81, movable groove；9, connecting pin；10, torsional spring；11, finger；12, bearing is installed；13, flange；14,
Thrust washer.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figures 1 to 5, this motorcycle engine includes exhaust valve 1, rocker arm shaft 2, is connected to rocker arm shaft 2 and can
One end of the rocker arm 3 of swing, rocker arm 3 is connected with 1 upper end of exhaust valve, spring 4 is arranged on exhaust valve 1, decompressor includes
The camshaft 5 that can be rotated is installed with the exhaust cam 6 that can be leant with the other end of rocker arm 3, camshaft 5 on camshaft 5
On be also arranged with and get rid of block 7, get rid of the side that block 7 is located at exhaust cam 6, the side of exhaust cam 6 is installed with towards the decompression for getting rid of block 7
Pin 8 and connecting pin 9, connecting pin 9 is equipped with torsional spring 10 and the both ends of torsional spring 10 are respectively acting on camshaft 5 and get rid of on block 7, gets rid of block
7 end is connected with decompression pin 8 specifically, depressurizing pin 8 and connecting pin 9 is symmetricly set on the same side of exhaust cam 6；Get rid of block
7 are looped around 5 periphery of camshaft in non-close annular, and the one end for getting rid of block 7 is rotatably connected on connecting pin 9, gets rid of the other end of block 7
It is installed with the finger 11 towards exhaust cam 6, depressurizing on the end face of pin 8 has edge decompression pin 8 is radial to be extended internally by its circumferential surface
Movable groove 81, finger 11 is plugged in movable groove 81；Torsional spring 10 is set on connecting pin 9, torsional spring 10 be located at get rid of block 7 with
Between exhaust cam 6, get rid of block 7 has installation aperture 71 on the side of close end, and one end of torsional spring 10 is resisted against camshaft 5
On outer peripheral surface, the other end of torsional spring 10 is plugged in installation aperture 71.
Engine is in stationary state: at this time since the elastic force of torsional spring 10 acts on, so that it is high to depressurize pin 8 on exhaust cam 6
In the basic circle of exhaust cam 6, it will push rocker arm 3 and rotate certain angle, so that opening exhaust valve 1 discharges inner pressure of air cylinder, from
And play depressurization.In engine start: in the initial stage, after engine start, revolving speed is in 0-500r/min, at this time
Centrifugal force effect can be generated by getting rid of block 7, and since revolving speed is lower, centrifugal force is also less than the torsion of torsional spring 10, depressurize pin on exhaust cam 6
8 are still higher than the basic circle of exhaust cam 6, still will push the rotation of rocker arm 3, so that opening exhaust valve 1 discharges inner pressure of air cylinder, from
And continue to play depressurization.Then it is higher than the 500r/min stage in revolving speed, at this time due to getting rid of 7 centrifugal force of block greater than torsional spring 10
Torsion promotes to depressurize the base that pin 8 is lower than exhaust cam 6 on exhaust cam 6 by getting rid of the rotation decompression pin 8 of the finger 11 on block 7
Circle can not push rocker arm 3 to rotate, and fail to open exhaust valve 1, depressurization failure, and exhaust valve 1 works normally.This decompressor
Structure is simple, can ensure that engine speed is depressurized in 1000rpm or less continuous and effective, and effect of easing stress is more preferable, makes foot starting lighter
Pine is laborsaving, while also effectively extending the service life for starting motor and storage battery.
As shown in Fig. 2, being additionally provided at least two installation bearings 12 on camshaft 5, two interval of installation bearing 12 settings are convex
The end of wheel shaft 5 is equipped with flange 13；It is preferably two that bearing 12 is installed in the present embodiment, one of to install bearing 12 and get rid of block
Thrust washer 14 is equipped between 7.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although 1, exhaust valve is used more herein；2, rocker arm shaft；3, rocker arm；4, spring；5, camshaft；6, it is vented convex
Wheel；7, block is got rid of；71, aperture is installed；8, decompression pin；81, movable groove；9, connecting pin；10, torsional spring；11, finger；12, installation axle
It holds；13, flange；14, the terms such as thrust washer, but it does not exclude the possibility of using other terms.Only using these terms
It is the essence in order to be more convenient to describe and explain the utility model；Be construed as any additional limitation all and be with
What the spirit of the present invention was disagreed.
Claims (5)
1. a kind of non-backpulsing decompressor of motorcycle engine, motorcycle engine include exhaust valve (1), rocker arm shaft (2),
One end of the rocker arm (3) that is connected to rocker arm shaft (2) and can swing, the rocker arm (3) is connected with the exhaust valve (1) upper end
It connects, is arranged with spring (4) on the exhaust valve (1), which is characterized in that the decompressor includes the camshaft that can be rotated
(5), the exhaust cam (6) that can be leant with the other end of the rocker arm (3) is installed on the camshaft (5), it is described convex
It is also arranged with and gets rid of block (7) on wheel shaft (5), the side got rid of block (7) and be located at the exhaust cam (6), the exhaust cam (6)
Side be installed with and get rid of the decompression pin (8) and connecting pin (9) of block (7) described in, the connecting pin (9) is equipped with torsional spring (10)
And the both ends of the torsional spring (10) be respectively acting on the camshaft (5) and it is described get rid of on block (7), the end for getting rid of block (7)
It is connected with decompression pin (8).
2. the non-backpulsing decompressor of motorcycle engine according to claim 1, which is characterized in that the decompression pin
(8) and connecting pin (9) is symmetricly set on the same sides of the exhaust cam (6)；Described get rid of block (7) are looped around in non-close annular
Camshaft (5) periphery, described one end for getting rid of block (7) be rotatably connected on the connecting pin (9), the block (7) that gets rid of
The other end is installed with the finger (11) towards the exhaust cam (6), has on the end face of the decompression pin (8) along decompression pin
(8) the radial movable groove (81) to be extended internally by its circumferential surface, the finger (11) are plugged in the movable groove (81).
3. the non-backpulsing decompressor of motorcycle engine according to claim 2, which is characterized in that the torsional spring
(10) it is set on the connecting pin (9), the torsional spring (10) is got rid of between block (7) and the exhaust cam (6) positioned at described, institute
It states and gets rid of block (7) on the side of close end with installation aperture (71), one end of the torsional spring (10) is resisted against the camshaft
(5) on outer peripheral surface, the other end of the torsional spring (10) is plugged in the installation aperture (71).
4. the non-backpulsing decompressor of motorcycle engine according to claim 1 or 2 or 3, which is characterized in that described
At least two installation bearings (12), two installation bearing (12) interval settings, the camshaft are additionally provided on camshaft (5)
(5) end is equipped with flange (13).
5. the non-backpulsing decompressor of motorcycle engine according to claim 4, which is characterized in that one of institute
It states installation bearing (12) and described get rid of is equipped with thrust washer (14) between block (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821511444.1U CN208686447U (en) | 2018-09-14 | 2018-09-14 | A kind of non-backpulsing decompressor of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821511444.1U CN208686447U (en) | 2018-09-14 | 2018-09-14 | A kind of non-backpulsing decompressor of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686447U true CN208686447U (en) | 2019-04-02 |
Family
ID=65888746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821511444.1U Active CN208686447U (en) | 2018-09-14 | 2018-09-14 | A kind of non-backpulsing decompressor of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208686447U (en) |
-
2018
- 2018-09-14 CN CN201821511444.1U patent/CN208686447U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200225 Address after: 318050 Tangshang village, Jinqing Town, jiangshengluqiao District, Taizhou City, Zhejiang Province Patentee after: JINLANG SCIENCE & TECHNOLOGY CO., LTD. Address before: Jinqing Luqiao west two road Taizhou City, Zhejiang province 318050 No. 259 Patentee before: ZheJiang JinLang Engine Co.,Ltd. |