CN201318408Y - Coil spring with variable material diameters, pitch diameters and stiffness - Google Patents
Coil spring with variable material diameters, pitch diameters and stiffness Download PDFInfo
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- CN201318408Y CN201318408Y CNU2008201435551U CN200820143555U CN201318408Y CN 201318408 Y CN201318408 Y CN 201318408Y CN U2008201435551 U CNU2008201435551 U CN U2008201435551U CN 200820143555 U CN200820143555 U CN 200820143555U CN 201318408 Y CN201318408 Y CN 201318408Y
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Abstract
The utility model relates to a coil spring with variable material diameters, pitch diameters and stiffness, which is characterized in that the middle lower segment of the coil spring, of which the pitch diameters are the same, is formed by the winding of materials with the same large-diameter material diameters; and the upper segment of the coil spring is formed by the winding of materials, of which the material diameters are gradually decreased from the large-diameter material diameter of the middle lower segment spring to a small-diameter material diameter, and the pitch diameter of the upper segment spring is the gradually-decreased part of the pitch diameter of the middle lower segment. The coil spring of variable material diameters, pitch diameters and stiffness can be applied to a middle bridge suspension frame of an automobile; and the utility model adopts a steel bar stock with a circular section and changeable material diameter, so that the coil spring with changeable stiffness can be obtained through the pitch diameter variations of the spring during the rolling, thereby satisfying the variable stiffness requirement on the special spring compressure of a vehicle-used suspension spring.
Description
Technical field
The utility model belongs to the automobile specified spring, footpath, variable stiffness coil spring in particularly a kind of change material footpath, the change.
Background technique
At home, except that the multiply cylindrically coiled spring, making the variable-stiffness helix pressure spring mainly is to realize by changing pitch or middle footpath: several variable rate springs of introducing among the GB/T 1805 for example, they all are to roll with isometrical bar: " irregular pitch cylindroid helicalcoil compression spring ", " multiply cylindrically coiled spring ", " tapered coil spring ", " barrel-shaped spring " and " hourglass shaped spring " etc.See following table for details:
| The spring title | The irregular pitch cylindroid helicalcoil compression spring | The multiply cylindrically coiled spring | Tapered coil spring | Barrel-shaped spring | Hourglass shaped spring |
Change pitch and middle footpath by changing the material footpath, adding, this variable-stiffness helix pressure spring, still blank in the manufacturing at home.
Another characteristics of this spring are to adopt new material.38SiMnVBE is that China oneself development and the New Si-Mn that authorizes patent of invention are alloyed steel, it mainly was the steel grade at the automobile hanging parts design originally, the main reference object of its performance design is the advanced level of state's external spiral spring with steel, and can on various high-performance springs (spiral spring, leaf spring, torsion bar spring, leading arm etc.) and some shaft elements, be applied.Now obtained many test result, particularly obtained some at the ideal effect that hangs practical application on the component.
The automobile pendulum spring is the vitals that connects vehicle and wheel, plays a part vibration damping and energy storage.It is the middle and high carbon Si-Mn system of 0.5-0.7% that the orthodox car spring steel generally adopts carbon content, and Cr-Mn system, Cr-V are the alloyed steel manufacturing, and all there are many shortcomings in this type of spring steel in performance, production, use, and poor as plasticity and toughness, comprehensive mechanical property is not good enough; Easily decarburization, the fatigue strength and the bullet that influence spring subtract drag etc.Present research to the motor spring steel, substantially be on existing traditional middle and high carbon spring steel material potentiality, to excavate, as adopt advanced smelting equipment and technology, improve the metallurgical quality of spring steel, adopt best shape, process engineering such as heat treatment, this material also begins the application on railway speed increase lorry minor diameter spiral spring.Because above-mentioned test the maximum shear stress is all above railway speed-raising truck bogie spring the maximum shear stress: τ
Max=906MPa.We are used in this kind production technology, heat treatment process on the railway speed increase lorry minor diameter spiral spring, reach to according to the test down of design experiment stress, reach 3,000,000 fatigue life constantly; Under strenuous test stress, test, the fatigue life＞350,000 times also continuous.
Summary of the invention
Technical problem to be solved in the utility model is: footpath, variable stiffness coil spring in a kind of change material footpath, the change are provided.Satisfy automobile with the special length of spring compressed power of pendulum spring have become rigidity requirement.
The technical solution of the utility model is:
Footpath, variable stiffness coil spring in a kind of change material footpath, the change, it is characterized in that: hypomere is the spring by the identical middle hypomere part of the mean diameter of coil of expecting directly to be wound in for identical major diameter material material directly in helical spring, at helical spring epimere is progressively to narrow down to the spring epimere part that the material in minor diameter material footpath is wound in by the major diameter material of middle hypomere spring footpath, and the middle footpath of this its epimere partial spring be by the middle footpath of middle hypomere partial spring progressively in the part that diminishes of footpath.
The utility model effect is:
Footpath, variable stiffness coil spring are applied in the helical spring of automobile jackshaft suspension in this change material footpath, the change.Be adopt to become material footpath circular cross-section steel bar, change mean diameter of coil when rolling, obtain to have the helical spring that becomes rigidity.Satisfy automobile with the special length of spring compressed power of pendulum spring have become rigidity requirement.
Description of drawings
Fig. 1 is the bar schematic representation that becomes the use of footpath, variable stiffness coil spring in material footpath, the change
Fig. 2 is the structural representation that becomes footpath, variable stiffness coil spring in material footpath, the change
Embodiment
Footpath, variable stiffness coil spring in a kind of change material footpath as shown in Figure 2, the change, the middle hypomere 1 of helical spring 8 is large diameter material footpath 6 constant middle footpath 3 parts that are wound in, helical spring epimere 2 be major diameter 6 progressively narrow down to middle footpath that the material of minor diameter 7 directly is wound in progressively diminish by big-and-middle footpath 3 in 4 part directly.
This change material footpath, become in footpath, variable stiffness coil spring be to use change material footpath that the processing that becomes material footpath circular cross-section steel bar 9 (bar is referring to Fig. 1) obtains, become in footpath, variable stiffness coil spring.
Should calculate rigidity, tapering after spring rolls according to requirements such as material footpath, middle footpath, the number of turns, rigidity, freedom high 8, guarantee the rational technology of the process of rolling.Simultaneously the void that calculates spring according to the size of the shearing stress of reduced diameter portion and strain thereof is done size.
Manufacture the problem that material footpath, middle footpath reduce to hold conical section deflection in quench heating, tempering heating process of formation that solved.
Claims (1)
1, a kind of change material footpath, become in footpath, variable stiffness coil spring, it is characterized in that: hypomere is the spring by the identical middle hypomere part of the mean diameter of coil of expecting directly to be wound in for identical major diameter material material directly in helical spring, at helical spring epimere is progressively to narrow down to the spring epimere part that the material in minor diameter material footpath is wound in by the major diameter material of middle hypomere spring footpath, and the middle footpath of this its epimere partial spring be by the middle footpath of middle hypomere partial spring progressively in the part that diminishes of footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201435551U CN201318408Y (en) | 2008-11-27 | 2008-11-27 | Coil spring with variable material diameters, pitch diameters and stiffness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201435551U CN201318408Y (en) | 2008-11-27 | 2008-11-27 | Coil spring with variable material diameters, pitch diameters and stiffness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318408Y true CN201318408Y (en) | 2009-09-30 |
Family
ID=41197173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201435551U Expired - Fee Related CN201318408Y (en) | 2008-11-27 | 2008-11-27 | Coil spring with variable material diameters, pitch diameters and stiffness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318408Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949421A (en) * | 2010-06-09 | 2011-01-19 | 浙江美力弹簧有限公司 | Variable stiffness spring for realizing conversion of work rings and support rings |
| CN103335045A (en) * | 2013-07-04 | 2013-10-02 | 昆山杰升精密五金有限公司 | Different-diameter conical spring |
| CN103486174A (en) * | 2013-09-17 | 2014-01-01 | 安徽江淮汽车股份有限公司 | Damping 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 |
| CN113294466A (en) * | 2021-06-23 | 2021-08-24 | 辽阳奥鹏汽车零部件有限公司 | Variable-stiffness spiral spring |
-
2008
- 2008-11-27 CN CNU2008201435551U patent/CN201318408Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949421A (en) * | 2010-06-09 | 2011-01-19 | 浙江美力弹簧有限公司 | Variable stiffness spring for realizing conversion of work rings and support rings |
| CN101949421B (en) * | 2010-06-09 | 2013-01-16 | 浙江美力科技股份有限公司 | Variable stiffness spring for realizing conversion of work rings and support rings |
| CN103335045A (en) * | 2013-07-04 | 2013-10-02 | 昆山杰升精密五金有限公司 | Different-diameter conical spring |
| CN103486174A (en) * | 2013-09-17 | 2014-01-01 | 安徽江淮汽车股份有限公司 | Damping spring |
| CN103486174B (en) * | 2013-09-17 | 2015-10-21 | 安徽江淮汽车股份有限公司 | A kind of damping 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 |
| CN113294466A (en) * | 2021-06-23 | 2021-08-24 | 辽阳奥鹏汽车零部件有限公司 | Variable-stiffness spiral spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20171127 |