CN204239577U - A kind of high strength extension spring - Google Patents
A kind of high strength extension spring Download PDFInfo
- Publication number
- CN204239577U CN204239577U CN201420558751.0U CN201420558751U CN204239577U CN 204239577 U CN204239577 U CN 204239577U CN 201420558751 U CN201420558751 U CN 201420558751U CN 204239577 U CN204239577 U CN 204239577U
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- CN
- China
- Prior art keywords
- extension spring
- drag hook
- pitch
- spring body
- excessive
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Abstract
The utility model discloses a kind of high strength extension spring, comprise an extension spring body, described extension spring body entirety is cylindrical, and the pitch in described extension spring body is identical; Be arranged on the drag hook at extension spring body two ends, be provided with the excessive body of extension spring between described extension spring body and drag hook, the pitch between the excessive body of described extension spring is less than the pitch of extension spring body, and the excessive body entirety of described extension spring conically; Described extension spring body, drag hook and the excessive body of extension spring that is arranged between extension spring body and drag hook are by metal bar single forming.The concrete advantage of the utility model be reasonable in design, structure simple, be less than the pitch between extension spring body in the pitch at drag hook place, thus add the mechanical strength at drag hook place, improve the working life of extension spring.
Description
Technical field
The utility model relates to extension spring technical field, is related specifically to a kind of high strength extension spring larger for pulling force.
Background technique
Along with the progress of society and the development of machine building industry, and in machinery production, often run into some make component reset to the reset tension spring of origin-location, but the reset tension spring of prior art, because the reset tension spring pitch made is identical, and then at the drag hook place of Returnning spring, usually because mechanical strength is inadequate, under larger mechanical tensile forces, reset tension spring is broken from drag hook, and then brings larger inconvenience to machinery production, also reduce the working life of reset tension spring simultaneously.
But for the deficiencies in the prior art, developer is necessary that a kind of reasonable in design, structure of development is simple, be less than the pitch between extension spring body in the pitch at drag hook place, thus adds the mechanical strength at drag hook place, improves the high strength extension spring in the working life of extension spring.
Summary of the invention
For solving prior art Problems existing, the utility model object provide a kind of reasonable in design, structure simple, be less than the pitch between extension spring body in the pitch at drag hook place, thus add the mechanical strength at drag hook place, improve the high strength extension spring in the working life of extension spring.
For solving above technical problem, the utility model comes to be realize by the following technical solutions: a kind of high strength extension spring, comprises
One extension spring body, described extension spring body entirety is cylindrical, and the pitch in described extension spring body is identical;
Be arranged on the drag hook at extension spring body two ends, be provided with the excessive body of extension spring between described extension spring body and drag hook, the pitch between the excessive body of described extension spring is less than the pitch of extension spring body, and the excessive body entirety of described extension spring conically;
Described extension spring body, drag hook and the excessive body of extension spring that is arranged between extension spring body and drag hook are by metal bar single forming.
In a preferred embodiment of the present utility model, the excessive body of described extension spring is excessively connected for circular arc with between drag hook.
In a preferred embodiment of the present utility model, described metal bar everywhere diameter is identical.
In a preferred embodiment of the present utility model, described extension spring external surface is coated with rust proof paint.
The beneficial effects of the utility model are; Compared with prior art, the utility model comprises extension spring body, and extension spring body entirety is cylindrical, and in extension spring body, pitch is identical everywhere; Be arranged on the drag hook at extension spring body two ends, be provided with the excessive body of extension spring between extension spring body and drag hook, the pitch between the excessive body of extension spring is less than the pitch of extension spring body, and the excessive body entirety of extension spring conically; Extension spring body, drag hook and the excessive body of extension spring that is arranged between extension spring body and drag hook are by metal bar single forming, owing to being provided with the excessive body of extension spring between extension spring body and drag hook, again because the pitch between the excessive body of extension spring is less than the pitch between extension spring body, and then when extension spring receives larger pulling force, the excessive body of extension spring improves the mechanical strength of drag hook, thus avoid drag hook under larger pulling force, extension spring is damaged, and then improves the working life of extension spring.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment 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 more of the present utility model, 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.
Fig. 1 is plan view of the present utility model;
Fig. 2 is structural representation of the present utility model;
Numeral and the corresponding part title represented by letter in figure;
1. drag hook 2. extension spring excessive body 3. extension spring body 4. metal bar.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Shown in seeing figures.1.and.2, the utility model is a kind of high strength extension spring, comprises
One extension spring body 3, extension spring body 3 is overall cylindrical, and the pitch in extension spring body 3 is identical, and then avoids unbalance stress between extension spring body, to the damage that extension spring body brings, thus improves the working life of extension spring;
The drag hook 1 at extension spring body 3 two ends is arranged in the present embodiment, the excessive body 2 of extension spring is provided with between extension spring body 3 and drag hook 1, the excessive body 2 of extension spring is excessively connected for circular arc with between drag hook 3, thus avoid tensile stress and comparatively concentrate the destruction of causing to extension spring, pitch between the excessive body 2 of extension spring is less than the pitch of extension spring body 3, and then avoid drag hook 1 when receiving larger pulling force, drag hook 1 and extension spring body 3 rupture, thus improve working life and the mechanical strength of extension spring, extension spring excessive body 2 entirety is conically;
In the present embodiment, extension spring body 3, drag hook 1 and the excessive body 2 of extension spring that is arranged between extension spring body 3 and drag hook 1 are by metal bar 4 single forming, and metal bar 4 diameter is identical everywhere, and then improve extension spring tensile strength everywhere, thus further increase the working life of extension spring.
In the present embodiment, extension spring body 3 outer surface is coated with rust proof paint (not marking), prevents extension spring body 3 outer surface from getting rusty, to the destruction that extension spring causes, thus improves the working life of extension spring.
The utility model comprises extension spring body in sum, and extension spring body entirety is cylindrical, and in extension spring body, pitch is identical everywhere; Be arranged on the drag hook at extension spring body two ends, be provided with the excessive body of extension spring between extension spring body and drag hook, the pitch between the excessive body of extension spring is less than the pitch of extension spring body, and the excessive body entirety of extension spring conically; Extension spring body, drag hook and the excessive body of extension spring that is arranged between extension spring body and drag hook are by metal bar single forming, owing to being provided with the excessive body of extension spring between extension spring body and drag hook, again because the pitch between the excessive body of extension spring is less than the pitch between extension spring body, and then when extension spring receives larger pulling force, the excessive body of extension spring improves the mechanical strength of drag hook, thus avoid drag hook under larger pulling force, extension spring is damaged, and then improves the working life of extension spring.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a high strength extension spring, is characterized in that, comprises
One extension spring body, described extension spring body entirety is cylindrical, and the pitch in described extension spring body is identical;
Be arranged on the drag hook at extension spring body two ends, be provided with the excessive body of extension spring between described extension spring body and drag hook, the pitch between the excessive body of described extension spring is less than the pitch of extension spring body, and the excessive body entirety of described extension spring conically;
Described extension spring body, drag hook and the excessive body of extension spring that is arranged between extension spring body and drag hook are by metal bar single forming.
2. a kind of high strength extension spring according to claim 1, is characterized in that: the excessive body of described extension spring is excessively connected for circular arc with between drag hook.
3. a kind of high strength extension spring according to claim 1, is characterized in that: described metal bar everywhere diameter is identical.
4. a kind of high strength extension spring according to claim 1, is characterized in that: described extension spring external surface is coated with rust proof paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558751.0U CN204239577U (en) | 2014-09-26 | 2014-09-26 | A kind of high strength extension spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558751.0U CN204239577U (en) | 2014-09-26 | 2014-09-26 | A kind of high strength extension spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239577U true CN204239577U (en) | 2015-04-01 |
Family
ID=52769077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420558751.0U Expired - Fee Related CN204239577U (en) | 2014-09-26 | 2014-09-26 | A kind of high strength extension spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329402A (en) * | 2014-09-26 | 2015-02-04 | 无锡市天力五金弹簧厂 | High-strength tension spring |
-
2014
- 2014-09-26 CN CN201420558751.0U patent/CN204239577U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329402A (en) * | 2014-09-26 | 2015-02-04 | 无锡市天力五金弹簧厂 | High-strength tension 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 |
Granted publication date: 20150401 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |