CN202250285U - Valve spring for special section for engine - Google Patents
Valve spring for special section for engine Download PDFInfo
- Publication number
- CN202250285U CN202250285U CN2011203549949U CN201120354994U CN202250285U CN 202250285 U CN202250285 U CN 202250285U CN 2011203549949 U CN2011203549949 U CN 2011203549949U CN 201120354994 U CN201120354994 U CN 201120354994U CN 202250285 U CN202250285 U CN 202250285U
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- spring
- section
- cross
- pitch
- valve spring
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Abstract
The utility model discloses a valve spring for a special section for an engine. The valve spring is wound by using a spring steel wire; the cross-section of the spring steel wire is elliptical; and the spring has different pitches. By the spring with the structure, resonance and fluttering phenomena can be avoided; and different from the common cylindrical helical spring, the utility model has the advantages that: the stiffness of a variable stiffness cylindrical helical spring is increased along with the increase of loads.
Description
Technical field
The utility model belongs to automotive engine component, is specifically related to a kind of valve spring of motor.
Background technique
Engine valve spring requires in limited length range, can cross the bigger active force of generation, can not produce requirements such as resonance, the long service life of spring.The Spring Steel Wire sectional shape of existing spring is mainly circular cross-section.Rigidity Design such as compression helical spring employing, this type spring are difficult to satisfy usage requirement during as engine valve spring comprehensively, as aspect the lightweight.
Summary of the invention
The purpose of the utility model be to provide a kind of can satisfy comprehensively adapt to motor that engine operating condition etc. requires valve spring with profiled-cross-section, to address the above problem.
The technological scheme of the utility model is: motor is with the valve spring of profiled-cross-section, and it is the valve spring of Spring Steel Wire coiling, and the cross section of said Spring Steel Wire is oval, and the pitch of spring is different.
The area of the cross section of said Spring Steel Wire is 26.0mm2-50.0mm2.
The middle footpath Φ of said spring is 18.5mm-19.5mm.
The pitch of said spring is not both: the pitch from spring one end to the internode of another section of spring increases successively.
The pitch of said spring is not both: the pitch of the internode in the middle of from the two ends of spring to spring increases successively.
Adopt the elliptic cross-section Spring Steel Wire.The elliptic cross-section Spring Steel Wire rolls the valve spring that forms, and when parameters such as free height, number of total coils and load equate with common valve spring, has littler and tight height.This point has important function for reducing the motor height, through the aspect ratio of suitable selection material section, can make the shearing stress of Steel Wire Surface distribute more evenly than the circular section, consequently can design the valve spring of higher allowable stress.Therefore, the odd-shaped cross section valve spring is a former circular section THE OPTIMUM DESIGN OF THE SPRING, makes valve spring with the oval cross section steel wire and can reach minimizing pressure and height; Reduce spatial volume, optimize the stress distribution of spring coil, improve the product energy storage density; Reduce weight, realize light-weighted purpose.
In order to prevent resonance and flutter phenomenon, the utility model adopts the structure of spring irregular pitch, can prevent the generation of valve spring resonance effectively.Different with the common cylinder helical spring is, the rigidity that becomes the rigidity cylindrically coiled spring increases with the increase of load.
The realization of above-mentioned change rigidity is that the pitch difference through spring guarantees that pitch is the centre distance between the spring two adjacent rings.
Description of drawings
Fig. 1 motor is with the valve spring schematic representation of profiled-cross-section.
Fig. 2 rolls the schematic cross-section of the steel wire of spring.
Embodiment
As shown in Figure 1, valve spring 1 is formed by the Spring Steel Wire coiling, and the pitch of spring is different, and the pitch difference of spring has various ways:
1, the pitch of spring is not both: the pitch from spring one end to the internode of another section of spring increases successively.It can be whenever successively apart from being to increase successively, or the first segment pitch with second successively apart from different, second successively distance with the 3rd successively apart from identical, the 3rd successively distance with the 4th successively apart from different, per successively two successively apart from increases.
2, the pitch of spring is not both: the pitch of the internode in the middle of from the two ends of spring to spring increases successively.It is second successively apart from bigger than first segment pitch, the 3rd successively apart from than second successively apart from big; Second from the bottom successively apart from bigger, third from the bottom successively apart from bigger than distance successively second from the bottom than distance successively last; Middle pitch is maximum.
Above-mentioned first segment pitch, second is distance successively, the 3rd distance successively, the 4th successively apart from wait be among Fig. 1 from top to bottom, i.e. the direction of pitch a, b, c; Distance successively second from the bottom, distance successively last, distance successively third from the bottom etc. are from the bottom to top, i.e. the direction of pitch c, b, a.
The middle footpath Φ of spring is 18.5mm-19.5mm.
As shown in Figure 2, the cross section of Spring Steel Wire is oval, and the area of cross section is 26.0mm
2-50.0mm
2
The spring rate of above-mentioned spring: 25.5N/mm-54N/mm;
Spring fatigue safety coefficient:＞1.3
Claims (5)
1. a motor is with the valve spring of profiled-cross-section, and it is the valve spring of Spring Steel Wire coiling, and the cross section that it is characterized in that said Spring Steel Wire is oval, and the pitch of spring is different.
2. motor is with the valve spring of profiled-cross-section according to claim 1, and the area that it is characterized in that the cross section of said Spring Steel Wire is 26.0mm
2-50.0mm
2
3. motor is characterized in that with the valve spring of profiled-cross-section the middle footpath Φ of said spring is 18.5mm-19.5mm according to claim 1.
4. motor is characterized in that with the valve spring of profiled-cross-section the pitch of said spring is not both according to claim 1: the pitch from spring one end to the internode of another section of spring increases successively.
5. motor is characterized in that with the valve spring of profiled-cross-section the pitch of said spring is not both according to claim 1: the pitch of the internode in the middle of from the two ends of spring to spring increases successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203549949U CN202250285U (en) | 2011-09-21 | 2011-09-21 | Valve spring for special section for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203549949U CN202250285U (en) | 2011-09-21 | 2011-09-21 | Valve spring for special section for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250285U true CN202250285U (en) | 2012-05-30 |
Family
ID=46111543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203549949U Expired - Lifetime CN202250285U (en) | 2011-09-21 | 2011-09-21 | Valve spring for special section for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250285U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185097A (en) * | 2013-03-18 | 2013-07-03 | 中国兵器工业集团第七0研究所 | Valve spring structure |
| CN107262638A (en) * | 2016-04-06 | 2017-10-20 | 哈尔滨飞机工业集团有限责任公司 | A kind of special tooling for twining heterotypic spring |
| CN109073019A (en) * | 2016-04-13 | 2018-12-21 | 新确有限公司 | Helical spring |
| CN111022539A (en) * | 2019-11-28 | 2020-04-17 | 浙江兰菱弹簧有限公司 | Valve spring capable of meeting large-load and large-stroke requirements and forming method thereof |
-
2011
- 2011-09-21 CN CN2011203549949U patent/CN202250285U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185097A (en) * | 2013-03-18 | 2013-07-03 | 中国兵器工业集团第七0研究所 | Valve spring structure |
| CN107262638A (en) * | 2016-04-06 | 2017-10-20 | 哈尔滨飞机工业集团有限责任公司 | A kind of special tooling for twining heterotypic spring |
| CN109073019A (en) * | 2016-04-13 | 2018-12-21 | 新确有限公司 | Helical spring |
| CN111022539A (en) * | 2019-11-28 | 2020-04-17 | 浙江兰菱弹簧有限公司 | Valve spring capable of meeting large-load and large-stroke requirements and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |