CN201031100Y - Inverse coiling type constant-force spring mechanism - Google Patents
Inverse coiling type constant-force spring mechanism Download PDFInfo
- Publication number
- CN201031100Y CN201031100Y CNU200720070497XU CN200720070497U CN201031100Y CN 201031100 Y CN201031100 Y CN 201031100Y CN U200720070497X U CNU200720070497X U CN U200720070497XU CN 200720070497 U CN200720070497 U CN 200720070497U CN 201031100 Y CN201031100 Y CN 201031100Y
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- CN
- China
- Prior art keywords
- wheel
- force spring
- constant force
- constant
- furling
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- Expired - Lifetime
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Abstract
The utility model discloses a reversely-reeling constant force spring mechanism, which comprises a driven wheel, a furling wheel and an exporting wheel, wherein one end of the constant force spring is reeled and covered on the driven wheel, the other end of the constant force spring is fixed and reversely reeled on the furling wheel, and the exporting wheel and the furling wheel are fixedly connected with each other and have the same shaft. The constant force spring is reversely reeled on the furling wheel for changing the linear motion of the constant force spring into a rotary motion. The constant force spring is reversely reeled on a furling wheel with a relatively larger diameter, and when the operating stroke is longer, the constant force spring keeps a constant twisting moment in the rotating process, which is then converted into pull force, and thereby the pull force can also keep constant.
Description
Affiliated technical field
The utility model discloses a kind of constant-force spring mechanism.
Background technology
At present, being used for the constant force spring of all kinds of balancing devices, all is directly constant force spring to be drawn back or pushes open during use, and moving linearly makes constant force spring thrust output or pulling force.Its shortcoming is when forced stroke is longer, and the variation of thrust or pulling force is just bigger, is difficult to reach the requirement of constant force.
Summary of the invention
It is longer that the purpose of this utility model provides a kind of forced stroke, the constant-force spring mechanism that tension variations is less.
The utility model comprises follower, furls wheel and output wheel, and constant force spring one end volume is enclosed within follower, and the constant force spring other end is fixed and warp is furling on the wheel; Output wheel with furl wheel and captive joint, and be coaxial.
The beneficial effects of the utility model are such: constant force spring back-roll is being furled on the wheel, making the straight-line motion of constant force spring, becoming and rotatablely move.Constant force spring is rewound relatively large furling on the wheel of diameter, make constant force spring produce moment of torsion, because every layer of constant force spring is very little with respect to the change in radius that furls wheel around the change in radius that gets on, so when forced stroke is longer, it is constant that the moment of torsion that constant force spring produces in rotary course keeps, and then, changing into pulling force with the moment of torsion that constant force spring produces, such pulling force that produces also keeps constant.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
1. follower 2. constant force springs 3. furl wheel 4. bolt of rear end plates 5. output wheels 6. ropes
The specific embodiment
Below in conjunction with description of drawings embodiment of the present utility model is further described.The utility model comprises follower 1, furls wheel 3 and output wheel 5, and constant force spring 2 one ends volume is enclosed within on the follower 1, and constant force spring 2 other ends are fixed and warp is furling on the wheel 3; Output wheel 5 with furl wheel 3 and captive joint, and be coaxial; The described wheel diameter that furls is greater than follower.
Principle of work of the present utility model: the constant force spring volume of moulding is enclosed within on the follower, one end of constant force spring is fixed on bolt of rear end plate furls on the wheel, with furl the wheel the coaxial output wheel that is provided with, furl wheel and captive joint, twining rope on the output wheel, when pulling out rope with output wheel, output wheel drives and furls the wheel clickwise, the follower left-hand revolution, like this, constant force spring is being furled on the wheel by warp; When payout, the constant force spring clickwise, pulling furls the wheel left-hand revolution, makes constant force spring automatically revert on the follower, simultaneously rope is furled back on the output wheel.Pulling out and reclaiming, exportable constant pulling force by rope.As rope being changed into electric wire or flexible pipe, also can become the retracting device of a constant force.
Claims (2)
1. inversely winding type constant-force spring mechanism is characterized in that: comprise follower, furl wheel and output wheel, constant force spring one end volume is enclosed within follower, and the constant force spring other end is fixed and warp is furling on the wheel; Output wheel with furl wheel and captive joint, and be coaxial.
2. inversely winding type constant-force spring mechanism according to claim 1 is characterized in that: the described wheel diameter that furls is greater than the follower diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720070497XU CN201031100Y (en) | 2007-05-31 | 2007-05-31 | Inverse coiling type constant-force spring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720070497XU CN201031100Y (en) | 2007-05-31 | 2007-05-31 | Inverse coiling type constant-force spring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031100Y true CN201031100Y (en) | 2008-03-05 |
Family
ID=39162994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720070497XU Expired - Lifetime CN201031100Y (en) | 2007-05-31 | 2007-05-31 | Inverse coiling type constant-force spring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031100Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507871B (en) * | 2009-03-27 | 2010-06-09 | 华中师范大学 | Constant-force chest developer |
| CN103335047A (en) * | 2013-06-28 | 2013-10-02 | 上海协力卷簧制造有限公司 | Multilayer constant-torque torsion spring device |
-
2007
- 2007-05-31 CN CNU200720070497XU patent/CN201031100Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507871B (en) * | 2009-03-27 | 2010-06-09 | 华中师范大学 | Constant-force chest developer |
| CN103335047A (en) * | 2013-06-28 | 2013-10-02 | 上海协力卷簧制造有限公司 | Multilayer constant-torque torsion spring device |
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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: 20080305 |
|
| CX01 | Expiry of patent term |