CN104454072A - Engine and decompressor thereof - Google Patents
Engine and decompressor thereof Download PDFInfo
- Publication number
- CN104454072A CN104454072A CN201410753522.9A CN201410753522A CN104454072A CN 104454072 A CN104454072 A CN 104454072A CN 201410753522 A CN201410753522 A CN 201410753522A CN 104454072 A CN104454072 A CN 104454072A
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- CN
- China
- Prior art keywords
- decompression
- gear
- pin
- movable part
- decompressor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a decompressor comprising a camshaft, a gear, a decompression pin, a decompression moving part, a spring, a retaining ring and limiting pins. The camshaft is nested in a shaft hole of the gear. The retaining ring is clamped and mounted on the end faces of the camshaft and the gear, and the retaining ring covers the decompression pin axially; the limiting pins are arranged on the end face of the gear and near the decompression moving part and used for limiting the plane movement range of the decompression moving part. The retaining ring and the limiting pins are added to the end face of the gear, the movement range of the decompression moving part can be limited in the axial and radial directions of the gear respectively, and the movement stroke of the decompression moving part is reduced, so that the decompression moving part is less prone to driving the decompression pin to rotate, the decompressor can be kept under the decompression state more easily, and decompression effect can be improved. The invention further discloses an engine comprising the decompressor. The engine is kept under the decompression state more easily and good is decompression effect.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of decompressor.In addition, the invention still further relates to a kind of motor comprising above-mentioned decompressor.
Background technique
Available engine adopts valve mechanism for top rod engine, and be made up of valve rocker, tappet, underlying rocking arm 101 and camshaft device 102, please refer to Fig. 1, Fig. 1 is the design proposal schematic diagram of camshaft device of the prior art.Cam mechanism is in crankcase, and such is configured to underlying cam engine, and be a kind of more original structure, its advantage is simple structure, high reliability.Shortcoming is distribution device is to-and-fro motion, and additional parts quality is large, and it is large that height turns inertia, and under high rotary speed working, tappet because inertia jump out of rocking arm, can produce noise, motor be in this form not suitable for the environment of relative high speed operation.Because the air pressure of huge discharge vehicle is than large, if use this camshaft, then the problem of difficulty in starting can be there is, so current this camshaft is only applicable to small displacement vehicle.In order to huge discharge vehicle can be adapted to, need to change camshaft structure.
In sum, how making this camshaft go for huge discharge vehicle, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
In view of this, the object of this invention is to provide a kind of decompressor, go for huge discharge vehicle.In addition present invention also offers a kind of motor comprising above-mentioned decompressor.
For achieving the above object, the invention provides following technological scheme:
A decompressor for motor, comprises camshaft and gear, and described cam sleeve is located in the axis hole of described gear; Wherein, decompression pin, decompression movable part, spring, back-up ring and position limit pin is also comprised;
Described decompression movable part is the plate of one piece of ear structure, and the centre of described decompression movable part is provided with the through hole of multidiameter shaft structure, and one end of described spring is fixedly connected in described through hole, and the other end of described spring is fixedly connected on the end face of described gear; The inner side flexure plane of described decompression movable part is provided with otic placode, and described otic placode is provided with earhole homoaxial with described through hole;
Described decompression pin is semicylinder, and described decompression pin and described earhole adopt the socket connection of interference fit; Described decompression pin card is connected in the draw-in groove on described camshaft basic circle, and is inserted in the jack of described gear; Described spring is when free state, and the rectangle plane side of described decompression pin is in described draw-in groove;
The axis hole place of described gear is provided with boss; Described back-up ring clamping is arranged on the end face of described camshaft and described gear, and described back-up ring shelters from described decompression pin in the axial direction; Described position limit pin is located on gear face, and near described decompression movable part, for limiting the planar movement scope of described decompression movable part.
Preferably, the boss of described gear is provided with I-groove, the plane of described I-groove passes the central shaft of described jack.
A kind of motor, comprise described decompressor, wherein, described decompressor is the decompressor described in above-mentioned any one.
Adopt above-mentioned Placement, when camshaft does not rotate or rotates unhappy, the position of decompression pin is as tilting in above-mentioned rectangle plane in slot, can by the push rod of gear opposite side when cam rotates, pin moment jack-up can be depressurized, reach effect of easing stress, so can realize starting.When camshaft fast rotational, decompression movable part because of centrifugal force be greater than spring force and dorsad Gear center move, rotate simultaneously, thus drive the rotation of decompression pin, decompression pin rectangle plane toward the outer side time, the height of decompression pin is then lower than camshaft basic circle, and thus push rod can not produce and beat, and decompression process terminates.
The present invention by adding back-up ring and position limit pin on the end face of gear, can respectively gear shaft to radial direction on restriction decompression movable part the sphere of activities, also define the axial the sphere of activities of decompression pin, thus reduce the active strokes of decompression movable part, therefore decompression movable part not easily drives decompression pin to rotate, device is easy to remain on decompression state, can promote effect of easing stress.Present invention also offers a kind of motor, this motor is easy to remain on decompression state.
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 embodiments of the 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 the accompanying drawing provided.
Fig. 1 is the design proposal schematic diagram of camshaft device of the prior art;
Fig. 2 is the front view of the specific embodiment of decompressor provided by the present invention;
Fig. 3 is the schematic diagram of movable part of reducing pressure in the specific embodiment of decompressor provided by the present invention;
Fig. 4 is the sectional view in H-H direction in Fig. 3;
Fig. 5 is the sectional view in J-J direction in Fig. 3.
Embodiment
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.
Core of the present invention is to provide a kind of decompressor, and this decompressor is easy to remain on decompression state.Another core of the present invention is to provide a kind of motor comprising above-mentioned decompressor.
Please refer to Fig. 2, Fig. 2 is the front view of the specific embodiment of decompressor provided by the present invention.
Decompressor comprises camshaft 1, gear 2, decompression pin 3, decompression movable part 7, spring 6, back-up ring 5 and position limit pin 8, and camshaft 1 is set in the axis hole of gear 2.
The cam base circle of camshaft 1 is provided with a draw-in groove got through, the center line of this draw-in groove and the centerline parallel of camshaft 1, the axis hole wall of gear 2 is provided with at least one jack, this jack and Gear center line parallel.
Please refer to Fig. 3 to Fig. 5, Fig. 3 is the schematic diagram of movable part of reducing pressure in the specific embodiment of decompressor provided by the present invention, and Fig. 4 is the sectional view in H-H direction in Fig. 3, and Fig. 5 is the sectional view in J-J direction in Fig. 3.
Decompression movable part 7 is the plate of one piece of ear structure, and the decompression structural middle of movable part 7 is provided with the through hole of multidiameter shaft structure, for being fixedly connected with spring 6.One end of spring 6 adopts and connects and fixes connection in through-holes, and the other end of spring 6 is fixedly connected on the end face of gear 2; Spring 6 is for being connected to gear 2 end face by decompression movable part 7, and spring 6, to the pulling force of decompression movable part 7, makes decompression movable part 7 more near the neutral position of gear, and on mobile position, plays effect of contraction to decompression movable part 7.
The inner side flexure plane of decompression movable part 7 is provided with otic placode 4, otic placode 4 is a cylindrical plate, this plate is fixedly connected on the inner side of decompression movable part 7, otic placode 4 is provided with at least one earhole, this earhole is a semicircle orifice through hole, the axis that this earhole hangs down directly in the plane of above-mentioned decompression movable part 7, and with the axis being parallel of gear 2.
Decompression pin 3 is semicylinder, and as shown in Figure 5, decompression pin 3 and earhole adopt the socket connection of interference fit; Decompression pin 3 is connected in the draw-in groove on camshaft 1 basic circle, and decompression pin 3 can rotate freely in draw-in groove, and decompression pin 3 is inserted in the jack of gear 2, and the other end of decompression pin 3 stretches out the other end place of the draw-in groove on cam to gear 2.
The axis hole place of gear 2 is provided with boss; Back-up ring 5 clamping is arranged on the same side end face of camshaft 1 and gear 2, and back-up ring 5 shelters from decompression pin 3 in the axial direction, for limiting the axial motion of decompression pin 3.
Gear 2 end face is provided with position limit pin 8, and when spring 6 is in free state, the rectangle plane side of decompression pin 3 is in draw-in groove, and now, this position limit pin 8 is arranged near decompression movable part 7, for limiting the planar movement scope of decompression movable part 7.
Alternatively, the boss of gear is provided with I-groove, the plane of I-groove passes the central shaft of jack, and for abdicating the activity space of decompression movable part 7, make the sphere of activities of decompression movable part 7 clearer and more definite, stroke is more determined.
Adopt above-mentioned Placement, when camshaft 1 does not rotate or rotates unhappy, the position of decompression pin 3 is as tilting in above-mentioned rectangle plane in slot, can by the push rod of gear 2 opposite side when cam rotates, pin moment jack-up can be depressurized, reach effect of easing stress, so can realize the startup of motor.When camshaft 1 fast rotational, decompression movable part 7 because of centrifugal force be greater than spring 6 elastic force and dorsad gear 2 center move, rotate simultaneously, thus drive the rotation of decompression pin 3, when the rectangle plane of decompression pin 3 is outside camshaft, the height of decompression pin 3 is then lower than the basic circle of cam, and thus push rod can not produce and beat, and decompression process terminates.
Embodiment provided by the present invention by adding back-up ring 5 and position limit pin 8 on the end face of gear, the sphere of activities of decompression movable part 7 can be limited respectively in gear 2 axis and radial direction, also define the axial the sphere of activities of decompression pin 3, thus reduce the active strokes of decompression movable part 7, therefore decompression movable part 7 not easily drives decompression pin 3 to rotate, decompression pin 3 is easy to remain on edge-on state in slot, then device is easy to remain on decompression state, and then can promote effect of easing stress.
Except the decompressor that above-described embodiment provides, the present invention also provides a kind of motor comprising decompressor disclosed in above-described embodiment, and this motor is easy to remain on decompression state, and effect of easing stress is good.The structure of other each several parts of this motor please refer to prior art, repeats no more herein.
Above motor provided by the present invention and decompressor thereof are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (3)
1. a decompressor, comprise camshaft (1) and gear (2), described camshaft (1) is set in the axis hole of described gear (2); It is characterized in that, also comprise decompression pin (3), decompression movable part (7), spring (6), back-up ring (5) and position limit pin (8);
Described decompression movable part (7) is the plate of one piece of ear structure, the centre of described decompression movable part (7) is provided with the through hole of multidiameter shaft structure, one end of described spring (6) is fixedly connected in described through hole, and the other end of described spring (6) is fixedly connected on the end face of described gear (2); The inner side flexure plane of described decompression movable part (7) is provided with otic placode (4), and described otic placode (4) is provided with earhole homoaxial with described through hole;
Described decompression pin (3) is semicylinder, and described decompression pin (3) and described earhole adopt the socket connection of interference fit; Described decompression pin (3) is connected in the draw-in groove on described camshaft (1) basic circle, and is inserted in the jack of described gear (2); Described spring (6) is when free state, and the rectangle plane side of described decompression pin (3) is in described draw-in groove;
The axis hole place of described gear (2) is provided with boss; Described back-up ring (5) clamping is arranged on the end face of described camshaft (1) and described gear (2), and described back-up ring (5) shelters from described decompression pin (3) in the axial direction; Described position limit pin (8) is located on described gear (2) end face, and near described decompression movable part (7), for limiting the planar movement scope of described decompression movable part (7).
2. device according to claim 1, is characterized in that, the boss of described gear is provided with I-groove, and the plane of described I-groove passes the central shaft of described jack.
3. a motor, comprises described decompressor, it is characterized in that, described decompressor is the decompressor described in the claims 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753522.9A CN104454072A (en) | 2014-12-10 | 2014-12-10 | Engine and decompressor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753522.9A CN104454072A (en) | 2014-12-10 | 2014-12-10 | Engine and decompressor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454072A true CN104454072A (en) | 2015-03-25 |
Family
ID=52900733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410753522.9A Pending CN104454072A (en) | 2014-12-10 | 2014-12-10 | Engine and decompressor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454072A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117858A1 (en) * | 2001-02-28 | 2002-08-29 | Tomoyuki Hanyu | Hybrid motor for a vehicle |
| US20020139343A1 (en) * | 2001-03-27 | 2002-10-03 | Yuichi Kawamoto | Cam shaft positioning structure of engine |
| CN2818798Y (en) * | 2005-09-07 | 2006-09-20 | 重庆宗申技术开发研究有限公司 | Universal decompress device of gasoline equipment |
| CN201908739U (en) * | 2010-12-31 | 2011-07-27 | 三阳工业股份有限公司 | Engine cylinder head with decompression device |
| 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 |
| CN204299648U (en) * | 2014-12-10 | 2015-04-29 | 重庆市银钢一通科技有限公司 | Engine and decompressor thereof |
-
2014
- 2014-12-10 CN CN201410753522.9A patent/CN104454072A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117858A1 (en) * | 2001-02-28 | 2002-08-29 | Tomoyuki Hanyu | Hybrid motor for a vehicle |
| US20020139343A1 (en) * | 2001-03-27 | 2002-10-03 | Yuichi Kawamoto | Cam shaft positioning structure of engine |
| CN2818798Y (en) * | 2005-09-07 | 2006-09-20 | 重庆宗申技术开发研究有限公司 | Universal decompress device of gasoline equipment |
| CN201908739U (en) * | 2010-12-31 | 2011-07-27 | 三阳工业股份有限公司 | Engine cylinder head with decompression device |
| 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 |
| CN204299648U (en) * | 2014-12-10 | 2015-04-29 | 重庆市银钢一通科技有限公司 | Engine and decompressor thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |