CN102877906B - Motor and camshaft thereof - Google Patents
Motor and camshaft thereof Download PDFInfo
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- CN102877906B CN102877906B CN201210395538.8A CN201210395538A CN102877906B CN 102877906 B CN102877906 B CN 102877906B CN 201210395538 A CN201210395538 A CN 201210395538A CN 102877906 B CN102877906 B CN 102877906B
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Abstract
The invention discloses a kind of motor, comprise camshaft, the exhaust cam that camshaft has central shaft, fixes gear on center shaft and fix on center shaft; Also comprise decompression pin and get rid of block and elastic reset part; Decompression pin is spacing in the groove at the basic circle place of exhaust cam rotationally, it the first side comprising the bottom deviating from groove and the second side be connected with the first side; First side is protruded outside basic circle; Second side near the bottom of groove, and not higher than basic circle when it goes to outer towards groove; Get rid of block by centrifugal force drive decompression pin rotate, and make the first side press close to groove bottom, make the second side towards outside groove, its with reduce pressure pin be fixedly connected with; Elastic reset part with get rid of that block is fixedly connected with gear.During engine start provided by the invention, its in-cylinder pressure is less, and the startup burden of magnetogenerator is little, the failure rate is low that electricity starts.The present invention also provides a kind of camshaft for motor, and it can be assisted to reduce and start the dynamo-electric rate of fault started.
Description
Technical field
The present invention relates to technical field of engines, more particularly, relate to a kind of motor, also relate to a kind of camshaft for motor.
Background technique
Reciprocating engine is also piston engine, is a kind of motor utilizing one or more piston pressure to be converted to rotation function.Camshaft is parts in piston engine, for controlling the opening and closing of valve, the cam comprising central shaft, be fixed on the gear on above-mentioned central shaft and be fixed on above-mentioned central shaft, wherein, cam corresponding with each cylinder of motor on cam has intake cam and exhaust cam, and intake cam and exhaust cam can be set to 1 cam or 2 different cams according to the concrete structure of motor.
Along with the development of society, people get more and more to the demand of the motor of huge discharge, but the engine cylinder internal pressure of huge discharge is comparatively large, and in electric start-up course, the burden of magnetogenerator is large, and its frequency broken down is high.
In addition, the in-cylinder pressure being applied to the large-duty engine of motorcycle is comparatively large, causes motorcycle pin difficulty in starting.
In sum, how to provide a kind of large-duty engine that in-cylinder pressure is less when starting, to alleviate the burden of magnetogenerator in electric start-up course, the rate of fault reducing electricity startup is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of motor, when it starts, in-cylinder pressure is less, can alleviate the burden of magnetogenerator in electric start-up course, reduces the rate of fault that electricity starts.The present invention also provides a kind of camshaft being applied to above-mentioned motor.
For achieving the above object, the invention provides following technological scheme:
A kind of motor, comprises camshaft, the exhaust cam that described camshaft has central shaft, is fixed on the gear on described central shaft and is fixed on described central shaft, also comprises:
Spacing decompression pin in the groove at the basic circle place of described exhaust cam rotationally, it the first side comprising the bottom deviating from described groove and the second side be connected with described first side; Described first side is protruded outside described basic circle; Described second side near the bottom of described groove, and not higher than described basic circle when it goes to outer towards described groove;
Drive described decompression to sell by centrifugal force to rotate, and making described first side press close to the bottom of described groove, making described second side towards getting rid of block outside described groove, it is fixedly connected with described decompression pin; With
With the described elastic reset part getting rid of block and be fixedly connected with described gear.
Preferably, in above-mentioned motor, the end face of described gear is provided with sinking space, described in get rid of block and be positioned at described sinking space.
Preferably, in above-mentioned motor, described sinking space is arranged on described gear and deviates from the side of described exhaust cam, and described decompression pin is through the pilot hole on described gear.
Preferably, in above-mentioned motor, described in get rid of block and be provided with the first mounting hole; Described gear is provided with the second mounting hole; Described elastic reset part is spring or torsion spring, and the two ends of described elastic reset part are hooked on described first mounting hole and described second mounting hole place respectively.
Preferably, in above-mentioned motor, described groove is positioned at the middle part of described exhaust cam away from the end of described gear; Described central shaft is fixed with back-up ring, and it deviates from the side of described exhaust cam near described gear; The end of described groove and described back-up ring along described central shaft axial limiting described in decompression pin.
Preferably, in above-mentioned motor, described in get rid of block be the moon shape get rid of block, the middle part of its recess side is provided with and the described projection sold and be fixedly connected with that reduces pressure.
For a camshaft for motor, the exhaust cam comprising central shaft, be fixed on the gear on described central shaft and be fixed on described central shaft; Also comprise:
Spacing decompression pin in the groove at the basic circle place of described exhaust cam rotationally, it the first side comprising the bottom deviating from described groove and the second side be connected with described first side; Described first side is protruded outside described basic circle; Described second side near the bottom of described groove, and not higher than described basic circle when it goes to outer towards described groove;
Drive described decompression to sell by centrifugal force to rotate, and making described first side press close to the bottom of described groove, making described second side towards getting rid of block outside described groove, it is fixedly connected with described decompression pin; With
With the described elastic reset part getting rid of block and be fixedly connected with described gear.
Motor provided by the invention comprises camshaft, the exhaust cam that this camshaft has central shaft, fixes gear on center shaft and fix on center shaft, also comprise decompression pin, get rid of block and elastic reset key, wherein, decompression pin is spacing in the groove at the basic circle place of exhaust cam rotationally, and it comprises the first side deviating from bottom portion of groove and the second side be connected with above-mentioned first side; First side is protruded outside basic circle; Second side near the bottom of groove, and not higher than basic circle when it goes to outer towards groove; Get rid of block by centrifugal force drive decompression pin rotate, and make the first side press close to groove bottom, make the second side towards groove get rid of block, its with reduce pressure pin be fixedly connected with; Elastic reset part with get rid of block and be fixedly connected with gear.
During work, motor centrifugal force when starting to start is less, get rid of block under the effect of elastic reset part with cam axle, decompression pin maintains motionless or fine rotation, and the first side on decompression pin is protruded outside basic circle, when the basic circle of exhaust cam goes to exhaust valve lower push rod by its jack-up, exhaust valve is opened certain interval and is discharged gas in the jar, thus reduction in-cylinder pressure, alleviate the burden of magnetogenerator during startup, reduce the probability that magnetogenerator breaks down; After motor normally starts, the centrifugal force getting rid of block becomes large and exceedes the active force of elastic reset part, get rid of block to rotate relative to gear, and drive decompression pin to rotate, the first side is made to press close to the bottom of groove, second side is towards slot opening place, and decompression pin is inoperative to the push rod that exhaust cam is corresponding, exhaust casing normal exhaust; During engine misses, the centrifugal force getting rid of block reduces, and it replys under the effect of elastic reset part, and decompression pin goes back to initial position.
During engine start provided by the invention, its in-cylinder pressure is little, and when electricity starts, the burden of magnetogenerator is little, the failure rate is low that electricity starts.
In addition, when motor provided by the invention is used for motorcycle, pin can be made to start more laborsaving, convenient.
The present invention also provides a kind of camshaft being applied to motor provided by the invention, and it can be assisted to reduce and start the dynamo-electric rate of fault started.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation getting rid of block side of this kind of camshaft for motor that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the exhaust cam side of a kind of camshaft for motor that Fig. 2 provides for the embodiment of the present invention;
The structural representation getting rid of block that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the decompression pin that Fig. 4 provides for the embodiment of the present invention;
What Fig. 5 provided for the embodiment of the present invention gets rid of block and the assembling schematic diagram sold that reduces pressure;
The structural representation of the another kind of camshaft for motor that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the side view of Fig. 6 convexity wheel shaft;
What Fig. 8 provided for the embodiment of the present invention gets rid of block and the erection drawing sold that reduces pressure;
Wherein, in Fig. 1-Fig. 8:
Elastic reset part 101; Get rid of block 102; Decompression pin 103; Gear 104; Exhaust cam 105; Central shaft 106; Back-up ring 107; 3rd rivet 108; First mounting hole 21; Mounting hole 22; Second side 31; First side 32.
Embodiment
The embodiment of the invention discloses a kind of motor, when it starts, in-cylinder pressure is less, can alleviate the burden of magnetogenerator in electric start-up course, reduces the rate of fault that electricity starts.The embodiment of the invention also discloses a kind of camshaft being applied to above-mentioned motor.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 8, the motor that the embodiment of the present invention provides comprises camshaft, the exhaust cam 105 that this camshaft has central shaft 106, is fixed on the gear 104 on above-mentioned central shaft 106 and is fixed on central shaft 106; Also comprise decompression pin 103, get rid of block 102 and elastic reset part 101; Decompression pin 103 is spacing in the groove at the basic circle place of exhaust cam 105 rotationally, and it comprises the first side 32 deviating from bottom portion of groove and the second side 31 be connected with the first side 32; First side 32 is protruded outside basic circle; Second side 31 near the bottom of groove, and not higher than above-mentioned basic circle when it goes to outer towards groove; Getting rid of block 102 drives decompression pin 103 to rotate by centrifugal force, and make the first side 32 press close to groove bottom, make the second side 31 towards getting rid of block 102 outside groove, it is fixedly connected with the pin 103 that reduces pressure; Elastic reset part 101 respectively with get rid of block 102 and be fixedly connected with gear 104.
During work, motor centrifugal force when starting to start is less, get rid of block 102 with cam axle, decompression pin 103 remains motionless or fine rotation, and the first side 32 on decompression pin 103 is protruded outside basic circle, when the basic circle of exhaust cam 105 goes to exhaust valve lower push rod by its jack-up, exhaust valve is opened certain interval and is discharged gas in the jar, thus reduction in-cylinder pressure, alleviate the burden of magnetogenerator during startup, reduce the probability that magnetogenerator breaks down; After motor normally starts, the centrifugal force getting rid of block 102 becomes large and exceedes the active force of elastic reset part 101, get rid of block 102 to rotate relative to gear 104, and drive decompression pin 103 to rotate, the first side 32 is made to press close to the bottom of groove, second side 31 is towards slot opening place, and the push rod of decompression pin 103 pairs of exhaust cam 105 correspondences is inoperative, exhaust casing normal exhaust; During engine misses, the centrifugal force getting rid of block 102 reduces, and it replys under the effect of elastic reset part 101, and decompression pin 103 goes back to initial position.
During the engine start that the embodiment of the present invention provides, its in-cylinder pressure is little, and when electricity starts, the burden of magnetogenerator is little, the failure rate is low that electricity starts.
In addition, when the motor that the embodiment of the present invention provides is for motorcycle, pin can be made to start more laborsaving, convenient.
Concrete, in the motor that above-described embodiment provides, the end face of gear 104 is provided with sinking space, gets rid of block 102 and is positioned at above-mentioned sinking space.In the motor that the present embodiment provides, get rid of block 102 and be in sinking space, avoiding whole camshaft total length in the axial direction increases, and can realize the effect of the rate of fault reducing magnetogenerator on the basis of other structure not changing motor.
In the motor that above-described embodiment provides, sinking space can be arranged on the end face of close exhaust cam 105 on gear 104, now, need arrange on central shaft 106 be used for centrally axle 106 radial direction by decompression pin 103 spacing cranse in groove, this cranse needs to arrange and is convenient to decompression pin 103 and is getting rid of the projection rotated under the drive of block 102; Accordingly, groove is open-minded near one end of gear 104, the other end near the middle part of cam, the axial direction of the end of groove and gear 104 centrally axle 106 by spacing for decompression pin 103 in groove.
Preferably, above-mentioned sinking space is positioned at end face gear 104 deviating from exhaust cam 105, decompression pin 103 is through pilot hole corresponding with it on gear 104, be convenient to gear 104 by spacing in groove for the radial direction of decompression pin 103 centrally axle 106, accordingly, groove is open-minded near one end of gear 104, the other end is near the middle part of cam, one end of decompression pin 103 is spacing by the end of groove, the other end is spacing by the back-up ring 107 be fixed on central shaft 106, and the axial direction of decompression pin 103 centrally axle 106 is spacing in groove.
Further, in the motor that above-described embodiment provides, the first side 32 is arc surface, and the second side 31 is plane; First side 32 can also be set to the arc shaped surface of non-arc-shaped, does not exceed the arbitrary shape curved surface outside basic circle when the second side 31 can be set to outer towards groove.Preferably, decompression pin 103 also comprises the 3rd side, and wherein, the 3rd side and the second side 31 are arranged successively along the axis of the pin 103 that reduces pressure, and it is connected with the first side 32 and forms disc so that with get rid of block 102 and be fixedly connected with, and pin 103 of being convenient to reduce pressure rotates.
Further, gear 104 comprises middle part and is provided with the main body of sinking space and is positioned at the extension set of above-mentioned sinking space, and wherein, extension set is fixedly connected with main body, it is sheathed and be fixed on central shaft 106, is securely fixed in central shaft 106 for making gear 104; Above-mentioned extension set is provided with the groove corresponding with pilot hole, and the plug that its end away from main body is provided with for spacing decompression pin 103 end blocks up.
Concrete, in the motor that above-described embodiment provides, getting rid of block 102 is that bending strip gets rid of block, and its one end is provided with the projection of band mounting hole 22, and decompression pin 103 is fixed on above-mentioned mounting hole place.Above-mentioned to get rid of the end volume that block 102 can also be set to be fixedly connected with the pin 103 that reduces pressure little, the bulky arbitrary shape of the other end.
In the motor that above-described embodiment provides, elastic reset part 101 can be set to spring, and as shown in Figure 1, its sense of rotation along gear 104 is held and got rid of block 102; Accordingly, get rid of block 102 and be provided with the first mounting hole 21, the main body of gear 104 is provided with the second mounting hole, and the two ends of spring are hooked on above-mentioned first mounting hole 21 and the second mounting hole respectively; Above-mentioned first mounting hole 21 can be arranged on the position far away apart from above-mentioned projection.Concrete, because the thickness of main body is comparatively large, and the hook of both ends of the spring is less, therefore for the ease of hook spring, the first mounting hole 21 is set to shoulder hole, and the hook of spring is hooked on the minimum step hole place of diameter.Elastic reset part 101 can also be set to torsion spring, as shown in fig. 6-7, now, also comprises the 3rd rivet 108 for being fixed on by torsion spring on gear 104, and the spire of torsion spring is sleeved on the 3rd rivet 108; First mounting hole 21 is arranged on the nearer position of distance projection, so that torsion spring gets rid of block 102 along the sense of rotation push-tight of gear 104.
The embodiment of the present invention also provides a kind of camshaft for motor, the exhaust cam 105 comprising central shaft 106, be fixed on the gear 104 on central shaft 106 and be fixed on central shaft 106, also comprise decompression pin 103, get rid of block 102 and elastic reset part 101, wherein, decompression pin 103 is spacing in the groove at the basic circle place of exhaust cam 105 rotationally, and it comprises the first side 32 deviating from bottom portion of groove and the second side 31 be connected with the first side 32; First side 32 is protruded outside basic circle; The second side 31 near the bottom of groove, and not higher than above-mentioned basic circle when it goes to outer towards groove; Getting rid of block 102 drives decompression pin 103 to rotate by centrifugal force, and make the first side 32 press close to groove bottom, make the second side 31 towards getting rid of block 102 outside groove, it is fixedly connected with the pin 103 that reduces pressure; Elastic reset part 101 respectively with get rid of block 102 and be fixedly connected with gear 104.
Concrete, in the camshaft that the embodiment of the present invention provides, decompression pin 103, get rid of block 102 and elastic reset part 101 respectively with the decompression pin 103 in above-mentioned motor, to get rid of block 102 identical with elastic reset part 101.
The embodiment of the present invention puies forward the rate of fault can assisted when camshaft is applied to motor and reduce and start dynamo-electric startup.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention 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 (7)
1. a motor, comprises camshaft, the exhaust cam that described camshaft has central shaft, is fixed on the gear on described central shaft and is fixed on described central shaft, it is characterized in that, also comprises:
Spacing decompression pin in the groove at the basic circle place of described exhaust cam rotationally, it the first side comprising the bottom deviating from described groove and the second side be connected with described first side; Described first side is protruded outside described basic circle; Described second side near the bottom of described groove, and not higher than described basic circle when it goes to outer towards described groove;
Drive described decompression to sell by centrifugal force to rotate, and making described first side press close to the bottom of described groove, making described second side towards getting rid of block outside described groove, it is fixedly connected with described decompression pin; With
With the described elastic reset part getting rid of block and be fixedly connected with described gear.
2. motor according to claim 1, is characterized in that, the end face of described gear is provided with sinking space, described in get rid of block and be positioned at described sinking space.
3. motor according to claim 2, is characterized in that, described sinking space is arranged on described gear and deviates from the side of described exhaust cam, and described decompression pin is through the pilot hole on described gear.
4. motor according to claim 3, is characterized in that, described in get rid of block and be provided with the first mounting hole; Described gear is provided with the second mounting hole; Described elastic reset part is spring or torsion spring, and the two ends of described elastic reset part are hooked on described first mounting hole and described second mounting hole place respectively.
5. motor according to claim 3, is characterized in that, described groove is positioned at the middle part of described exhaust cam away from the end of described gear; Described central shaft is fixed with back-up ring, and it deviates from the side of described exhaust cam near described gear; The end of described groove and described back-up ring along described central shaft axial limiting described in decompression pin.
6. the motor according to claim 1-5 any one, is characterized in that, described in get rid of block be the moon shape get rid of block, the middle part of its recess side is provided with and the described projection sold and be fixedly connected with that reduces pressure.
7. for a camshaft for motor, the exhaust cam comprising central shaft, be fixed on the gear on described central shaft and be fixed on described central shaft; It is characterized in that, also comprise:
Spacing decompression pin in the groove at the basic circle place of described exhaust cam rotationally, it the first side comprising the bottom deviating from described groove and the second side be connected with described first side; Described first side is protruded outside described basic circle; Described second side near the bottom of described groove, and not higher than described basic circle when it goes to outer towards described groove;
Drive described decompression to sell by centrifugal force to rotate, and making described first side press close to the bottom of described groove, making described second side towards getting rid of block outside described groove, it is fixedly connected with described decompression pin; With
With the described elastic reset part getting rid of block and be fixedly connected with described gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210395538.8A CN102877906B (en) | 2012-10-17 | 2012-10-17 | Motor and camshaft thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210395538.8A CN102877906B (en) | 2012-10-17 | 2012-10-17 | Motor and camshaft thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877906A CN102877906A (en) | 2013-01-16 |
| CN102877906B true CN102877906B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210395538.8A Active CN102877906B (en) | 2012-10-17 | 2012-10-17 | Motor and camshaft thereof |
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| Country | Link |
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| CN (1) | CN102877906B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122247A (en) * | 2006-08-08 | 2008-02-13 | 本田技研工业株式会社 | Engine with decompression device |
| CN201100151Y (en) * | 2007-11-16 | 2008-08-13 | 杜江 | Engine gas supply protrusion wheel axis combination |
| CN201258770Y (en) * | 2008-08-11 | 2009-06-17 | 杜江 | Cam shaft assembly |
| CN202832685U (en) * | 2012-10-17 | 2013-03-27 | 四川银钢一通凸轮轴股份有限公司 | Engine and camshaft thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3843926B2 (en) * | 2002-09-30 | 2006-11-08 | マツダ株式会社 | Engine valve gear |
-
2012
- 2012-10-17 CN CN201210395538.8A patent/CN102877906B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122247A (en) * | 2006-08-08 | 2008-02-13 | 本田技研工业株式会社 | Engine with decompression device |
| CN201100151Y (en) * | 2007-11-16 | 2008-08-13 | 杜江 | Engine gas supply protrusion wheel axis combination |
| CN201258770Y (en) * | 2008-08-11 | 2009-06-17 | 杜江 | Cam shaft assembly |
| CN202832685U (en) * | 2012-10-17 | 2013-03-27 | 四川银钢一通凸轮轴股份有限公司 | Engine and camshaft thereof |
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| CN102877906A (en) | 2013-01-16 |
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Address after: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Applicant after: Sichuan Silver Steel Yitong Camshaft Co., Ltd. Address before: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Applicant before: Sichuan Silver Steel Yitong Camshaft Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SICHUAN YIN GANG YITONG CAMSHAFT SHARES CO., LTD. TO: SICHUAN SILVER STEEL YITONG CAMSHAFT CO., LTD. |
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