CN202832697U - Decompressor mechanism of engine and engine - Google Patents
Decompressor mechanism of engine and engine Download PDFInfo
- Publication number
- CN202832697U CN202832697U CN201220533792.5U CN201220533792U CN202832697U CN 202832697 U CN202832697 U CN 202832697U CN 201220533792 U CN201220533792 U CN 201220533792U CN 202832697 U CN202832697 U CN 202832697U
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- camshaft
- limited part
- pressure
- rocking arm
- decompressor
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Abstract
The utility model discloses a decompressor mechanism of an engine. The decompressor mechanism of the engine comprises a center shaft, a gear, a camshaft and a pressure-relief panel, wherein the gear, the camshaft and the pressure-relief panel are all fixed on the center shaft. The pressure-relief panel is provided with a rocker arm, a pressure-relief cotter and an elastic homing piece. The rocker arm is connected with the pressure-relief panel through an articulated shaft, and one end of the rocker arm is provided with a first limiting part. The pressure-relief cotter is arranged in a discharge hole rotatably, one end of the pressure-relief cotter is provided with a second limiting part which can be stirred by the first limiting part, and the other end of the pressure-relief cotter is provided with a first surface which can form an integrated cambered surface with a surface of the camshaft and a second surface which can bulge the surface of the camshaft. The elastic homing piece stirs the pressure-relief cotter to the second surface and to bulge the surface of the camshaft through the rocker arm. When the engine starts, the pressure-relief cotter bulges the surface of the camshaft, propel rotation of the lower racker arm, so an exhaust valve is opened to release air pressure inside a cylinder. Purposes of reducing start resistance and reducing accident frequency in the process of starting the engine are achieved. The utility model further provides an engine using the decompressor mechanism.
Description
Technical field
The utility model relates to technical field of engines, more particularly, relates to a kind of mechanism of decompressor of motor, also relates to a kind of motor.
Background technique
The camshaft distribution form of motor is divided into overhead camshaft (OHC, Overhead Camshaft) and the end put camshaft (OHV, Overhead Valve) two kind, wherein, do not need to arrange the structures such as many valves, twin cam shaft or high-intensity cylinder overhead guard in the OHV motor, have that volume is little, the characteristics of compact structure, can under lower rotating speed, export higher moment of torsion, be more suitable for the equipment of small motor vehicle such as motorcycle and use.
Camshaft structure is put at the end that Fig. 1 shows in a kind of common motor, comprises the parts such as camshaft assembly 01, lower shake-changing arm 02, tappet 03 and valve rocker 04.Camshaft assembly 01 comprises gear 010 and cam 011; Lower shake-changing arm 02 is L shaped structure, and its middle part is hinged on the support of motor, and an end of lower shake-changing arm 02 is attached to the surface of cam 011, the other end then with tappet 03 location that offsets; Tappet 03 is installed in the pilot hole on the support, its other end and valve rocker 04 location that offsets; Valve rocker 04 can be opened valve and carry out exhaust by tappet 03 jack-up the time.
In motor shown in Figure 1, when cam 011 rotated to several angle, cam 011 was with lower shake-changing arm 02 jack-up, lower shake-changing arm 02 rotates, and drives the tappet 03 that offsets and locate with it, and tappet 03 moves axially along pilot hole, jack-up valve rocker 04, thus valve opened, carry out exhaust.
Above-mentioned engine structure is simple, compact, still because tappet 03 is reciprocating in pilot hole, simultaneously in the motor to add the parts quality larger, cause motor when starting, need to overcome larger friction and inertia.
After the motor with said structure increased discharge capacity, its in-cylinder pressure also increased thereupon, and this has further increased the burden of motor in the electric start-up course, also causes the engine foot difficulty in starting, and the frequency that motor breaks down in start-up course is higher.
By the above, how a kind of device is provided, increase the frequency that breaks down in the discharge capacity rear engine start-up course to be reduced in, become the technical problem that those skilled in the art need solution badly.
The model utility content
In view of this, the utility model provides a kind of mechanism of decompressor of motor, after realizing the being reduced in discharge capacity that increases motor, and the frequency that breaks down in the engine starting process.
For achieving the above object, the utility model provides following technological scheme:
A kind of mechanism of decompressor of motor comprises central shaft and is separately fixed at gear and camshaft on the central shaft, is provided with gas pressure relief slot on the outer surface of camshaft, also comprises:
Be arranged on the pressure reducing disc on the central shaft, be provided with on the pressure reducing disc with above-mentioned gas pressure relief slot to corresponding relief hole;
By the rocking arm that hinging shaft links to each other with pressure reducing disc, an end of rocking arm is provided with the first limited part;
Be arranged on rotationally the decompression pin in the relief hole, the one end inserts in the gas pressure relief slot, the other end is provided with the second limited part that can be stirred by the first limited part, and the end that the decompression pin inserts gas pressure relief slot is provided with and can and can protrudes from the second surface on camshaft surface with the first side of the complete cambered surface of surface composition of camshaft;
Be arranged between rocking arm and the pressure reducing disc, and can make the rocking arm pin that will reduce pressure turn to the elastic reset spare that second surface protrudes from the camshaft surface.
Preferably, in the above-mentioned mechanism of decompressor, the first limited part and hinging shaft are separately positioned on the two ends of rocking arm.
Preferably, in the above-mentioned mechanism of decompressor, rocking arm is semi-annular shape.
Preferably, in the above-mentioned mechanism of decompressor, the first limited part is arranged on the end of rocking arm, and the other end of rocking arm links to each other with elastic reset spare, and hinging shaft is arranged between the first limited part and the elastic reset spare.
Preferably, in the above-mentioned mechanism of decompressor, one of them is position limit pin for the first limited part and the second limited part, another for can about stir the positive stop of position limit pin.
Preferably, in the above-mentioned mechanism of decompressor, the first limited part is specially two limiting stoppers that arrange along the rocking arm length direction, and the second limited part comprises the driving lever mounting hole that is arranged on the decompression pin and the driving lever that is arranged in the driving lever mounting hole, and an end of driving lever is arranged between two limiting stoppers.
Preferably, in the above-mentioned mechanism of decompressor, elastic reset spare is extension spring or Compress Spring.
In the mechanism of decompressor of motor provided by the utility model, comprise central shaft and be separately fixed at gear, camshaft and pressure reducing disc on the central shaft.Outer surface at camshaft is provided with gas pressure relief slot, is provided with the relief hole corresponding with this gas pressure relief slot position at pressure reducing disc.Also be provided with rocking arm, decompression pin and elastic reset spare on pressure reducing disc, wherein, rocking arm links to each other with pressure reducing disc by hinging shaft, is provided with the first limited part at the one end; The decompression pin is arranged in the relief hole rotationally, the one end inserts in the gas pressure relief slot, the other end is provided with the second limited part that can be stirred by the first limited part, the end that the decompression pin inserts in the gas pressure relief slot is provided with first surface and second surface, can be with the surface composition of the camshaft complete cambered surface of first surface wherein, second surface can protrude from the surface of camshaft; Elastic reset spare is arranged between rocking arm and the pressure reducing disc, and under the effect of elastic reset spare, rocking arm will reduce pressure to sell and dial to first surface and the complete cambered surface of camshaft surface composition.
When using the mechanism of decompressor provided by the utility model, utilize it to substitute camshaft assembly in original motor, make an end of motor lower shake-changing arm be attached to the surface of camshaft.When motor did not start, under the effect of elastic reset spare, rocking arm will reduce pressure, and to dial to second surface outside for pin, and the decompression pin protrudes from the surface of camshaft.During ato unit, gear drives the camshaft low speed rotation by central shaft, the centrifugal force of rocking arm also is not enough to overcome the elastic force of spring at this moment, decompression this moment pin still protrudes from the surface of camshaft, when the rotation of pin with camshaft of reducing pressure slips over lower shake-changing arm, can promote its rotation, lower shake-changing arm drives valve rocker by tappet and moves, open exhaust valve release cylinder internal air pressure, reduce the cylinder internal air pressure, thereby realized reducing the resistance of start, reduce the purpose of the frequency that breaks down in the engine starting process.Behind engine start, the faster rotational speed of camshaft, the centrifugal force of rocking arm can overcome the elastic force of spring at this moment, and rocking arm is moved under the effect of centrifugal force, and the first limited part and the rotation of the second limited part drive decompression pin by matching, the first surface that decompression is sold is outside; At this moment, first surface and camshaft surface consist of a complete cambered surface, and namely the decompression pin does not protrude from the surface of camshaft, and the decompression pin is inoperative to lower shake-changing arm, and exhaust valve can not opened, and motor can normally move.
The utility model also provides a kind of motor, has used the above-mentioned mechanism of decompressor in this motor, thereby reduce in-cylinder pressure when ato unit, has reduced the resistance of start, the purpose of the frequency that realized reducing breaking down in the engine starting process.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing motor;
The structural representation of the mechanism of decompressor that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the cross sectional representation in A-A cross section among Fig. 3;
Fig. 5 is the outside schematic representation of first surface of decompression pin;
Fig. 6 is the outside schematic representation of second surface of decompression pin;
Fig. 7 is the structural representation of the mechanism of decompressor of employing direct rod shape structure rocking arm.
Among above Fig. 1-7:
Camshaft assembly 01, lower shake-changing arm 02, tappet 03, valve rocker 04, gear 010, cam 011;
Embodiment
The utility model embodiment discloses a kind of mechanism of decompressor of motor, after realizing the being reduced in discharge capacity that increases motor, and the purpose of the frequency that breaks down in the engine starting process.The utility model embodiment also discloses a kind of motor.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 2 to Fig. 6, the mechanism of decompressor of motor provided by the utility model comprises central shaft 1, gear 2, camshaft 3, pressure reducing disc 4, Rocker arm 5, decompression pin 6 and elastic reset spare 7.
Gear 2, camshaft 3 and pressure reducing disc 4 are fixedly linked with central shaft 1 respectively, both can be the both sides that gear 2 and pressure reducing disc 4 are separately positioned on camshaft 3 between this three, also gear 2 and pressure reducing disc 4 can be arranged on the homonymy of camshaft 3.
Be provided with gas pressure relief slot 30 on the camshaft 3, the relevant position on pressure reducing disc 4 is provided with corresponding relief hole.
Rocker arm 5 is the semi-annular shape structure of C shape, and one end and pressure reducing disc 4 are hinged, and preferably, Rocker arm 5 is hinged by rivet and pressure reducing disc 4 herein, and the other end of Rocker arm 5 is provided with the first limited part 50.
Elastic reset spare 7 is arranged between pressure reducing disc 4 and the Rocker arm 5, and under the effect of elastic reset spare 7, the Rocker arm 5 pin that will reduce pressure 6 dials to the state that second surface protrudes from camshaft 3 surfaces.Elastic reset spare 7 is extension spring, Compress Spring or such as other elastic reset spare of leaf spring etc., in the present embodiment, as shown in Figure 2, elastic reset spare 7 is that an end links to each other with pressure reducing disc 4, the extension spring that links to each other near the rivet place on the other end and the Rocker arm 5.Can find out that under the effect of extension spring, Rocker arm 5 has the trend that rotates as axial cam axle axis direction take rivet.
When using the mechanism of decompressor provided by the utility model, utilize original camshaft assembly in its alternative motor, make an end of motor lower shake-changing arm be attached to the surface of camshaft 3.
When motor did not start, under the effect of elastic reset spare 7, Rocker arm 5 will reduce pressure, and to dial to second surface 62 outside for pin 6, and decompression pin 5 protrudes from the surface of camshaft 3.During ato unit, gear 2 drives camshaft 3 low speed rotation by central shaft 1, the centrifugal force of Rocker arm 5 also is not enough to overcome the elastic force of elastic reset spare 7 at this moment, decompression this moment pin 6 still protrudes from the surface of camshaft 3, when 6 rotations with camshaft 3 of decompression pin slip over lower shake-changing arm, can promote its rotation, lower shake-changing arm drives valve rocker by tappet and moves, open exhaust valve release cylinder internal air pressure, reduce the cylinder internal air pressure, thereby realized reducing the resistance of start, reduce the purpose of the frequency that breaks down in the engine starting process.
Behind engine start, the faster rotational speed of camshaft 3, the centrifugal force of Rocker arm 5 can overcome the elastic force of elastic reset spare 7 at this moment; Rocker arm 5 is moved under the effect of centrifugal force; and the first limited part 50 and 6 rotations of the second limited part 60 drive decompression pins by matching, the first surface 61 that making reduces pressure sells on 6 is outside; At this moment, first surface 61 and camshaft 3 surfaces consist of a complete cambered surface, and namely decompression pin 6 does not protrude from the surface of camshaft 3, and 6 pairs of lower shake-changing arms of decompression pin are inoperative, and exhaust valve can not opened, and motor can normally move.
After engine misses, camshaft 3 finally stops the rotation; Rocker arm 5 is also in rotation; the Rocker arm 5 that loses centrifugal action is got back to initial position under the effect of elastic reset spare 7; and drive coupled decompression pin 5 rotation, makes second surface 62 outside, making decompression pin 6 protrude from the surface of camshaft 3; thus the pressure in the release cylinder, and prepare for the next time startup of motor.
By the above, the utility model provides a kind of mechanism of decompressor of motor, in this mechanism, by the rotatable decompression pin by rocking arm and the control of elastic reset spare is set, be implemented in the process of engine start and control exhauxt valve opens, thereby realized reducing the resistance of start of motor, and then realized reducing the purpose of the frequency that breaks down in the engine starting process.
In the mechanism of decompressor that above-described embodiment provides, Rocker arm 5 is the semicircular ring structure of C shape, and further, in the mechanism of decompressor that present embodiment provides, Rocker arm 5 also can be the direct rod shape structure.Please refer to Fig. 7 Rocker arm 5 and be the straight-bar of " one " font, be provided with the first limited part 50 that matches with the second limited part 60 on the pin 6 that reduces pressure at an end of Rocker arm 5; Position near the first limited part 50 on Rocker arm 5 is provided with hinging shaft, and elastic reset spare 7 then links to each other with Rocker arm 5 apart from the first limited part 50 farther positions on Rocker arm 5, and this moment, hinging shaft was arranged between the first limited part 50 and the elastic reset spare 7; The end that Rocker arm 5 is provided with the first limited part 50 is smaller than the other end of Rocker arm 5 to the length of hinging shaft to the length of hinging shaft.
Can find out that when static, the Rocker arm 5 pin that will reduce pressure 6 dials to the outside state of second surface under the effect of elastic reset spare 7.And when rotating, because hinging shaft is not arranged on the central authorities of Rocker arm 5, then will outwards move apart from the farther end of hinging shaft on the Rocker arm 5, namely this moment, Rocker arm 5 can dial to the outside state of first surface with decompression pin 6.
Can be found out that by the above when adopting the Rocker arm 5 of " one " font, the mechanism of decompressor that present embodiment provides equally can be by the pressure in the control cylinder, to realize reducing the purpose of the frequency that breaks down in the engine starting process.
In the mechanism of decompressor that above-described embodiment provides, adopt rivet to be hinged and connected between Rocker arm 5 and the pressure reducing disc 4, further, can also be by bearing being set or the mode of other forms of hinging shaft realizes hinged between Rocker arm 5 and the pressure reducing disc 4.
Simultaneously, in the mechanism of decompressor that above-described embodiment provides, the first limited part 50 is that 60 of two limiting stoppers, 501, the second limited parts comprise driving lever mounting hole 601 and driving lever 602, it will be appreciated by those skilled in the art that to be, exist other structure to realize utilizing Rocker arm 5 to stir decompression pin 6.
The first limited part 50 is for being arranged on the pilot hole on the Rocker arm 5, and the second limited part 60 is for being arranged on the directional post on the decompression pin 6, and directional post is arranged in the pilot hole, and can rotate along pilot hole.When Rocker arm 5 rotated, Rocker arm 5 can be stirred equally decompression pin 6 and be rotated.
Further, described pilot hole can also be guiding groove, thereby for the motion of directional post provides certain spatial redundancy, avoids because of stressed excessive the fractureing of directional post.
Moreover in the mechanism of decompressor that above-described embodiment provides, the concrete structure of the first limited part 50 and the second limited part 60 can exchange, and for example, the first limited part 50 can be set to directional post, and the second limited part 60 is set to pilot hole etc.
The utility model embodiment also discloses a kind of motor, in this motor, be provided with the above-mentioned mechanism of decompressor, thereby can in the process of ato unit, reduce the cylinder internal air pressure, reduce the resistance of start of motor, reduce the frequency that breaks down in the engine starting process.
Concrete, the disclosed motor of above-described embodiment is Honda CG125 motor, has motor with Honda CG125 motor same structure through transforming Honda CG125 motor with larger air displacement or other.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the mechanism of decompressor of a motor comprises central shaft and is separately fixed at gear and camshaft on the described central shaft, it is characterized in that, is provided with gas pressure relief slot on the outer surface of described camshaft, also comprises:
Be arranged on the pressure reducing disc on the described central shaft, be provided with on the described pressure reducing disc with above-mentioned gas pressure relief slot to corresponding relief hole;
By the rocking arm that hinging shaft links to each other with described pressure reducing disc, an end of described rocking arm is provided with the first limited part;
Be arranged on rotationally the decompression pin in the described relief hole, the one end inserts in the described gas pressure relief slot, the other end is provided with the second limited part that can be stirred by described the first limited part, and the end that described decompression pin inserts described gas pressure relief slot is provided with and can and can protrudes from the second surface on described camshaft surface with the first side of the complete cambered surface of surface composition of described camshaft;
Be arranged between described rocking arm and the described pressure reducing disc, and can make described rocking arm that described decompression pin is turned to the elastic reset spare that described second surface protrudes from described camshaft surface.
2. the mechanism of decompressor according to claim 1 is characterized in that, described the first limited part and described hinging shaft are separately positioned on the two ends of described rocking arm.
3. the mechanism of decompressor according to claim 1 is characterized in that, described rocking arm is semi-annular shape.
4. the mechanism of decompressor according to claim 1, it is characterized in that, described the first limited part is arranged on the end of described rocking arm, and the other end of described rocking arm links to each other with described elastic reset spare, and described hinging shaft is arranged between described the first limited part and the described elastic reset spare.
5. the mechanism of decompressor according to claim 1 is characterized in that, one of them is position limit pin for described the first limited part and described the second limited part, another for can about stir the positive stop of described position limit pin.
6. the mechanism of decompressor according to claim 1, it is characterized in that, described the first limited part is specially two limiting stoppers that arrange along described rocking arm length direction, described the second limited part comprises the driving lever mounting hole that is arranged on the described decompression pin and the driving lever that is arranged in the described driving lever mounting hole, and an end of described driving lever is arranged between two described limiting stoppers.
7. the mechanism of decompressor according to claim 1 is characterized in that, described elastic reset spare is extension spring or Compress Spring.
8. a motor is characterized in that, is provided with the mechanism of decompressor of the claims 1-7 described in each in the described motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220533792.5U CN202832697U (en) | 2012-10-17 | 2012-10-17 | Decompressor mechanism of engine and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220533792.5U CN202832697U (en) | 2012-10-17 | 2012-10-17 | Decompressor mechanism of engine and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832697U true CN202832697U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220533792.5U Expired - Fee Related CN202832697U (en) | 2012-10-17 | 2012-10-17 | Decompressor mechanism of engine and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877910A (en) * | 2012-10-17 | 2013-01-16 | 四川银钢一通凸轮轴股份有限公司 | Decompression mechanism of engine and engine |
-
2012
- 2012-10-17 CN CN201220533792.5U patent/CN202832697U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877910A (en) * | 2012-10-17 | 2013-01-16 | 四川银钢一通凸轮轴股份有限公司 | Decompression mechanism of engine and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN SILVER STEEL YITONG CAMSHAFT CO., LTD. Free format text: FORMER NAME: SICHUAN YIN'GANG YITONG CAMSHAFT SHARES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Patentee after: SICHUAN YINGANG YITONG CAMSHAFT CO.,LTD. Address before: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Patentee before: SICHUAN SILVER STEEL YITONG CAMSHAFT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20211017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |