CN202832685U - Engine and camshaft thereof - Google Patents
Engine and camshaft thereof Download PDFInfo
- Publication number
- CN202832685U CN202832685U CN 201220532420 CN201220532420U CN202832685U CN 202832685 U CN202832685 U CN 202832685U CN 201220532420 CN201220532420 CN 201220532420 CN 201220532420 U CN201220532420 U CN 201220532420U CN 202832685 U CN202832685 U CN 202832685U
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- groove
- gear
- piece
- central shaft
- decompression pin
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Abstract
The utility model discloses an engine. The engine comprises a camshaft, wherein the camshaft comprises a center shaft, a wheel gear which is fixed on the center shaft, and an exhaust cam which is fixed on the center shaft. The engine further comprises a rocker of a reduced pressure pin, and an elastic recovered part, wherein the reduced pressure pin can be rotationally limited in a groove of a base circle of the exhaust cam, and the engine comprises a first side which deviates from the bottom of the groove and a second side which is connected with the first side. The first side bulges out of the base circle. The second side is close to the bottom of the groove, and the second side cannot be higher than the base circle when the second side rotates towards the outer of the groove. The rocker drives the reduced pressure pin to rotate. The rocker enables the first side to be close to the bottom of the groove and enables the second side to face outside of the groove, and the rocker is fixed on the reduced pressure pin. The elastic part is fixedly connected with the rocker and the wheel gear. When the engine is started, pressure in a cylinder is low, a starting burden of a magneto is light, and failure rate of engine electric starting is low. The engine further provides a camshaft. The camshaft can assistantly reduce the failure rate of the engine electric starting.
Description
Technical field
The utility model relates to technical field of engines, more particularly, relates to a kind of motor, also relates to a kind of camshaft for motor.
Background technique
Reciprocating engine also is piston engine, is a kind of motor that utilizes one or more piston pressure to be converted to rotation function.Camshaft is parts in the piston engine, the opening and closing that is used for the control valve, comprise central shaft, be fixed on the gear on the above-mentioned central shaft and be fixed on cam on the above-mentioned central shaft, wherein, cam corresponding with each cylinder of motor on the cam has intake cam and exhaust cam, and intake cam can be set to according to the concrete structure of motor with 1 cam or 2 different cams with exhaust cam.
Along with the development of society, people are more and more to the demand of the motor of large discharge capacity, and still, the engine cylinder internal pressure of large discharge capacity is larger, and the burden of magnetogenerator is large in the electric start-up course, and its frequency that breaks down is high.
In addition, the in-cylinder pressure of large-duty engine that is applied to motorcycle is larger, causes motorcycle pin difficulty in starting.
In sum, how to provide a kind of when starting the less large-duty engine of in-cylinder pressure, to alleviate the burden of magnetogenerator in the electric start-up course, reducing the rate of fault that electricity starts is those skilled in the art's problem demanding prompt solutions.
The model utility content
In view of this, the utility model provides a kind of motor, and in-cylinder pressure was less when it started, and can alleviate the burden of magnetogenerator in the electric start-up course, reduces the rate of fault that electricity starts.The utility model also provides a kind of camshaft that is applied to above-mentioned motor.
For achieving the above object, the utility model provides following technological scheme:
A kind of motor comprises camshaft, and described camshaft has central shaft, be fixed on the gear on the described central shaft and be fixed on exhaust cam on the described central shaft, also comprises:
The decompression pin in the groove at spacing basic circle place at described exhaust cam rotationally, it comprises first side and the second side that links to each other with described the first side of the bottom that deviates from described groove; Protrude outside the described basic circle described the first side; Described the second side is near the bottom of described groove, and it is not higher than described basic circle when going to outside described groove;
Drive the rotation of described decompression pin by centrifugal force, and make described the first side press close to the bottom of described groove, make described the second side get rid of piece outside described groove, it is fixedly connected with described decompression pin; With
Get rid of the elastic reset spare that piece is fixedly connected with described gear with described.
Preferably, in the above-mentioned motor, the end face of described gear is provided with sinking space, and the described piece that gets rid of is positioned at described sinking space.
Preferably, in the above-mentioned motor, described sinking space is arranged on the side that described gear deviates from described exhaust cam, and described decompression pin passes the pilot hole on the described gear.
Preferably, in the above-mentioned motor, the described piece that gets rid of is provided with the first mounting hole; Described gear is provided with the second mounting hole; Described elastic reset spare is spring or torsion spring, and the two ends of described elastic reset spare are hooked on respectively described the first mounting hole and described the second mounting hole place.
Preferably, in the above-mentioned motor, described groove is positioned at the middle part of described exhaust cam away from the end of described gear; Be fixed with back-up ring on the described central shaft, it deviates from a side of described exhaust cam near described gear; The end of described groove and described back-up ring are along the described decompression pin of the axial limiting of described central shaft.
Preferably, in the above-mentioned motor, the described piece that gets rid of gets rid of piece for a month shape, and the middle part of its recess side is provided with the projection that is fixedly connected with described decompression pin.
A kind of camshaft for motor comprises central shaft, is fixed on the gear on the described central shaft and is fixed on exhaust cam on the described central shaft; Also comprise:
The decompression pin in the groove at spacing basic circle place at described exhaust cam rotationally, it comprises first side and the second side that links to each other with described the first side of the bottom that deviates from described groove; Protrude outside the described basic circle described the first side; Described the second side is near the bottom of described groove, and it is not higher than described basic circle when going to outside described groove;
Drive the rotation of described decompression pin by centrifugal force, and make described the first side press close to the bottom of described groove, make described the second side get rid of piece outside described groove, it is fixedly connected with described decompression pin; With
Get rid of the elastic reset spare that piece is fixedly connected with described gear with described.
The motor that the utility model provides comprises camshaft, this camshaft has central shaft, be fixed on the gear on the central shaft and be fixed on exhaust cam on the central shaft, also comprise the decompression pin, get rid of piece and elastic reset key, wherein, in the groove at spacing basic circle place at exhaust cam, it comprises the first side that deviates from bottom portion of groove and the second side that links to each other with above-mentioned the first side rotationally for decompression pin; Protrude outside the basic circle the first side; The second side is near the bottom of groove, and it is not higher than basic circle when going to outside groove; Get rid of piece and drive the rotation of decompression pin by centrifugal force, and make the first side press close to the bottom of groove, make the second side towards the piece that gets rid of of groove, it is sold with decompression and is fixedly connected with; Elastic reset spare with get rid of piece and be fixedly connected with gear.
During work, motor centrifugal force when beginning to start is less, getting rid of piece rotates with camshaft under the effect of elastic reset spare, decompression pin is kept motionless or fine rotation, and protrude outside the basic circle the first side on the decompression pin, when the basic circle of exhaust cam goes to the exhaust valve lower push rod with its jack-up, exhaust valve is opened certain interval and is discharged gas in the jar, thereby the reduction in-cylinder pressure, the burden of magnetogenerator when alleviating startup reduces the probability that magnetogenerator breaks down; After the normal startup of motor, the centrifugal force that gets rid of piece becomes the large active force that also surpasses elastic reset spare, getting rid of piece rotates with respect to gear, and drive decompression pin rotation, make the first side press close to the bottom of groove, the second side is towards the slot opening place, and the decompression pin is inoperative to push rod corresponding to exhaust cam, the exhaust casing normal exhaust; During engine misses, the centrifugal force that gets rid of piece reduces, and it is replied under the effect of elastic reset spare, and the decompression pin goes back to initial position.
Its in-cylinder pressure is little during engine start that the utility model provides, and the burden of magnetogenerator was little when electricity started, the failure rate is low that electricity starts.
In addition, when the motor that the utility model provides is used for motorcycle, pin is started more laborsaving, convenient.
The utility model also provides a kind of camshaft that is applied to the motor that the utility model provides, and it can be assisted to reduce and start the dynamo-electric rate of fault that starts.
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.
The structural representation that gets rid of the piece side of this a kind of camshaft that is used for motor that Fig. 1 provides for the utility model embodiment;
The structural representation of the exhaust cam side of a kind of camshaft that is used for motor that Fig. 2 provides for the utility model embodiment;
The structural representation that gets rid of piece that Fig. 3 provides for the utility model embodiment;
The structural representation of the decompression pin that Fig. 4 provides for the utility model embodiment;
The assembling schematic diagram that gets rid of piece and decompression pin that Fig. 5 provides for the utility model embodiment;
The structural representation of the another kind of camshaft that is used for motor that Fig. 6 provides for the utility model embodiment;
Fig. 7 is the side view of Fig. 6 convexity wheel shaft;
The erection drawing that gets rid of piece and decompression pin that Fig. 8 provides for the utility model embodiment;
Wherein, among Fig. 1-Fig. 8:
Elastic reset spare 101; Get rid of piece 102; Decompression pin 103; Gear 104; Exhaust cam 105; Central shaft 106; Back-up ring 107; The 3rd rivet 108; The first mounting hole 21; Mounting hole 22; The second side 31; The first side 32.
Embodiment
The utility model embodiment discloses a kind of motor, and in-cylinder pressure was less when it started, and can alleviate the burden of magnetogenerator in the electric start-up course, reduces the rate of fault that electricity starts.The utility model embodiment also discloses a kind of camshaft that is applied to above-mentioned 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.
See also Fig. 1-Fig. 8, the motor that the utility model embodiment provides comprises camshaft, and this camshaft has central shaft 106, be fixed on the gear 104 on the above-mentioned central shaft 106 and be fixed on exhaust cam 105 on the central shaft 106; Also comprise decompression pin 103, get rid of piece 102 and elastic reset spare 101; In the groove at spacing basic circle place at exhaust cam 105, it comprises the first side 32 that deviates from bottom portion of groove and the second side 31 that links to each other with the first side 32 to decompression pin 103 rotationally; Protrude outside the basic circle the first side 32; The second side 31 is near the bottom of grooves, and it is not higher than above-mentioned basic circle when going to outside groove; Get rid of piece 102 and drive 103 rotations of decompression pin by centrifugal force, and make the first side 32 press close to the bottom of groove, make the second side 31 get rid of piece 102 towards groove outside, it is sold 103 and is fixedly connected with reducing pressure; Elastic reset spare 101 respectively with get rid of piece 102 and be fixedly connected with gear 104.
During work, motor centrifugal force when beginning to start is less, getting rid of piece 102 rotates with camshaft, decompression pin 103 is kept motionless or fine rotation, and protrude outside the basic circles the first side 32 on the decompression pin 103, when the basic circle of exhaust cam 105 goes to the exhaust valve lower push rod with its jack-up, exhaust valve is opened certain interval and is discharged gas in the jar, thereby the reduction in-cylinder pressure, the burden of magnetogenerator when alleviating startup reduces the probability that magnetogenerator breaks down; After the normal startup of motor, the centrifugal force that gets rid of piece 102 becomes the large active force that also surpasses elastic reset spare 101, getting rid of piece 102 rotates with respect to gear 104, and drive decompression pin 103 rotations, make the first side 32 press close to the bottom of groove, the second side 31 is towards the slot opening place, and the push rod of 103 pairs of exhaust cam 105 correspondences of decompression pin is inoperative, the exhaust casing normal exhaust; During engine misses, the centrifugal force that gets rid of piece 102 reduces, and it is replied under the effect of elastic reset spare 101, and decompression pin 103 goes back to initial position.
Its in-cylinder pressure is little during engine start that the utility model embodiment provides, and the burden of magnetogenerator was little when electricity started, the failure rate is low that electricity starts.
In addition, when the motor that the utility model embodiment provides is used for motorcycle, pin is started 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 piece 102 and is positioned at above-mentioned sinking space.In the motor that the present embodiment provides, get rid of piece 102 and be in the sinking space, avoided whole camshaft to increase along the total length of axial direction, can realize on the basis of other structure that does not change motor the effect of the rate of fault of reduction magnetogenerator.
In the motor that above-described embodiment provides, sinking space can be arranged on the gear 104 near on the end face of exhaust cam 105, at this moment, need to be provided for the pin 103 spacing cranses in groove that radially will reduce pressures along central shaft 106 at central shaft 106, need on this cranse to arrange and be convenient to reduce pressure the projection that pin 103 rotates under the drive of getting rid of piece 102; Accordingly, groove is open-minded near an end of gear 104, and the other end is near the middle part of cam, and the end of groove and gear 104 will reduce pressures along the axial direction of central shaft 106 and sell 103 spacing in groove.
Preferably, above-mentioned sinking space is positioned at the end face that deviates from exhaust cam 105 on the gear 104, decompression pin 103 passes pilot hole corresponding with it on the gear 104, be convenient to gear 104 radially spacing in groove along central shaft 106 of pin 103 of will reducing pressure, accordingly, groove is open-minded near an 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 that is fixed on the central shaft 106, and decompression pin 103 is spacing in groove along the axial direction of central shaft 106.
Further, in the motor that above-described embodiment provides, the first side 32 is arc surface, and the second side 31 is the plane; The first side 32 can also be set to non-circular-arc arc shaped surface, and the second side 31 does not exceed the arbitrary shape curved surface outside the basic circle in the time of can being set to outside groove.Preferably, decompression pin 103 also comprises the 3rd side, and wherein, the 3rd side and the second side 31 axially arrange successively along decompression pin 103, and it is connected with the first side 32 and forms disc, so that be fixedly connected with getting rid of piece 102, and be convenient to reduce pressure and sell 103 and rotate.
Further, gear 104 comprises that the middle part is provided with the main body and the extension set that is positioned at above-mentioned sinking space of sinking space, and wherein, extension set is fixedly connected with main body, it is sheathed and be fixed on the central shaft 106, is used for making gear 104 be securely fixed in central shaft 106; Above-mentioned extension set is provided with the groove corresponding with pilot hole, and its end away from main body is provided with, and to sell the plug of 103 ends for spacing decompression stifled.
Concrete, in the motor that above-described embodiment provides, getting rid of piece 102 and get rid of piece for crooked strip, the one end is provided with the projection with mounting hole 22, and decompression pin 103 is fixed on above-mentioned mounting hole place.Above-mentionedly get rid of piece 102 can also to be set to the end volume that is 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 spare 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 piece 102; Accordingly, get rid of piece 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 respectively on above-mentioned the first mounting hole 21 and the second mounting hole; Above-mentioned the first mounting hole 21 can be arranged on apart from above-mentioned projection position far away.Concrete, because the thickness of main body is larger, and the hook of both ends of the spring is less, therefore for the ease of the hook spring, the first mounting hole 21 is set to shoulder hole, the hook of spring is hooked on the one-level shoulder hole place of diameter minimum.Elastic reset spare 101 can also be set to torsion spring, shown in Fig. 6-7, at this moment, comprises that also for the 3rd rivet 108 that torsion spring is fixed on the gear 104, the spire of torsion spring is sleeved on the 3rd rivet 108; The first mounting hole 21 is arranged on the position nearer apart from projection, so that torsion spring gets rid of piece 102 along the sense of rotation push-tight of gear 104.
The utility model embodiment also provides a kind of camshaft for motor, comprise central shaft 106, be fixed on the gear 104 on the central shaft 106 and be fixed on exhaust cam 105 on the central shaft 106, also comprise decompression pin 103, get rid of piece 102 and elastic reset spare 101, wherein, in the groove at spacing basic circle place at exhaust cam 105, it comprises the first side 32 that deviates from bottom portion of groove and the second side 31 that links to each other with the first side 32 to decompression pin 103 rotationally; Protrude outside the basic circle the first side 32; The second side 31 near the bottom of grooves, and it is not higher than above-mentioned basic circle when going to outside groove; Get rid of piece 102 and drive 103 rotations of decompression pin by centrifugal force, and make the first side 32 press close to the bottom of groove, make the second side 31 get rid of piece 102 towards groove outside, it is sold 103 and is fixedly connected with reducing pressure; Elastic reset spare 101 respectively with get rid of piece 102 and be fixedly connected with gear 104.
Concrete, in the camshaft that the utility model embodiment provides, decompression pin 103, get rid of piece 102 and elastic reset spare 101 respectively with above-mentioned motor in decompression pin 103, to get rid of piece 102 identical with elastic reset spare 101.
Can assist when the utility model embodiment carries camshaft and is applied to motor to reduce and start the dynamo-electric rate of fault that starts.
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 be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.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 (7)
1. a motor comprises camshaft, and described camshaft has central shaft, be fixed on the gear on the described central shaft and be fixed on exhaust cam on the described central shaft, it is characterized in that, also comprises:
The decompression pin in the groove at spacing basic circle place at described exhaust cam rotationally, it comprises first side and the second side that links to each other with described the first side of the bottom that deviates from described groove; Protrude outside the described basic circle described the first side; Described the second side is near the bottom of described groove, and it is not higher than described basic circle when going to outside described groove;
Drive the rotation of described decompression pin by centrifugal force, and make described the first side press close to the bottom of described groove, make described the second side get rid of piece outside described groove, it is fixedly connected with described decompression pin; With
Get rid of the elastic reset spare that piece is fixedly connected with described gear with described.
2. motor according to claim 1 is characterized in that, the end face of described gear is provided with sinking space, and the described piece that gets rid of is positioned at described sinking space.
3. motor according to claim 2 is characterized in that, described sinking space is arranged on the side that described gear deviates from described exhaust cam, and described decompression pin passes the pilot hole on the described gear.
4. motor according to claim 3 is characterized in that, the described piece that gets rid of is provided with the first mounting hole; Described gear is provided with the second mounting hole; Described elastic reset spare is spring or torsion spring, and the two ends of described elastic reset spare are hooked on respectively described the first mounting hole and described the second mounting hole place.
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; Be fixed with back-up ring on the described central shaft, it deviates from a side of described exhaust cam near described gear; The end of described groove and described back-up ring are along the described decompression pin of the axial limiting of described central shaft.
6. the described motor of any one is characterized in that according to claim 1-5, and the described piece that gets rid of gets rid of piece for a month shape, and the middle part of its recess side is provided with the projection that is fixedly connected with described decompression pin.
7. camshaft that is used for motor comprises central shaft, is fixed on the gear on the described central shaft and is fixed on exhaust cam on the described central shaft; It is characterized in that, also comprise:
The decompression pin in the groove at spacing basic circle place at described exhaust cam rotationally, it comprises first side and the second side that links to each other with described the first side of the bottom that deviates from described groove; Protrude outside the described basic circle described the first side; Described the second side is near the bottom of described groove, and it is not higher than described basic circle when going to outside described groove;
Drive the rotation of described decompression pin by centrifugal force, and make described the first side press close to the bottom of described groove, make described the second side get rid of piece outside described groove, it is fixedly connected with described decompression pin; With
Get rid of the elastic reset spare that piece is fixedly connected with described gear with described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532420 CN202832685U (en) | 2012-10-17 | 2012-10-17 | Engine and camshaft thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532420 CN202832685U (en) | 2012-10-17 | 2012-10-17 | Engine and camshaft thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832685U true CN202832685U (en) | 2013-03-27 |
Family
ID=47944417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220532420 Withdrawn - After Issue CN202832685U (en) | 2012-10-17 | 2012-10-17 | Engine and camshaft thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832685U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877906A (en) * | 2012-10-17 | 2013-01-16 | 四川银钢一通凸轮轴股份有限公司 | Engine and camshaft thereof |
| CN104454072A (en) * | 2014-12-10 | 2015-03-25 | 重庆市银钢一通科技有限公司 | Engine and decompressor thereof |
| CN112384683A (en) * | 2018-07-05 | 2021-02-19 | 本田技研工业株式会社 | Decompression device of engine and engine |
-
2012
- 2012-10-17 CN CN 201220532420 patent/CN202832685U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877906A (en) * | 2012-10-17 | 2013-01-16 | 四川银钢一通凸轮轴股份有限公司 | Engine and camshaft thereof |
| CN102877906B (en) * | 2012-10-17 | 2015-09-30 | 四川银钢一通凸轮轴有限公司 | Motor and camshaft thereof |
| CN104454072A (en) * | 2014-12-10 | 2015-03-25 | 重庆市银钢一通科技有限公司 | Engine and decompressor thereof |
| 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 |
|---|---|---|---|
| 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 Silver Steel 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. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |