CN207333525U - A kind of positive characteristic pulling force scrollwork tension spring - Google Patents
A kind of positive characteristic pulling force scrollwork tension spring Download PDFInfo
- Publication number
- CN207333525U CN207333525U CN201721232032.XU CN201721232032U CN207333525U CN 207333525 U CN207333525 U CN 207333525U CN 201721232032 U CN201721232032 U CN 201721232032U CN 207333525 U CN207333525 U CN 207333525U
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- China
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- pulling force
- metallic elastic
- elastic piece
- tension spring
- positive characteristic
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Abstract
The utility model relates to a kind of positive characteristic pulling force scrollwork tension spring, including a metallic elastic piece with equal thickness winds the multi-turn to be formed and is mutually adjacent between often enclosing, shape extends one section of a stretching end for the scroll wraps of hollow cylindrical and by the scroll wraps outermost metal elastic piece；If it is elongated direction from stretching end to scroll wraps direction, the metallic elastic piece of the scroll wraps winding by the stretching end when stretching flattening, the metallic elastic on piece is provided with pulling force and is incremented by area, the effective work width that the pulling force is incremented by metallic elastic piece in area is gradually incremented by along the elongated direction.The utility model will greatly reduced force transformation mechanism, organization volume is substantially reduced, agency cost drastically declines, stable structure, comply with the device that the output of various requirement pulling force gradually increases, cost substantially reduces and environmental, and then particularly has to some and have unusual significance in the product much limited.
Description
Technical field
The utility model relates to a kind of tension spring, and in particular to be a kind of positive characteristic pulling force scrollwork tension spring.
Background technology
It is a kind of current special extension spring, also known as scroll spring that fixed force spring, which is also known as constant force spring, it is by another
(difference of itself and scroll spring is that its scroll wraps is not pasted mutually per coil spring for plane scroll spring as species also known as clockwork spring
Tightly) change, constant-force volute spiral spring includes a thin metallic elastic piece with equal thickness and winds the multi-turn to be formed and often enclose
Between be mutually adjacent to, the scroll wraps of shape generally hollow cylindrical and one section of a drawing extended by scroll wraps outermost metal piece
End is stretched, is mainly used for all kinds of balancing device such as lifting balance devices, carbon brush for electric machine spring etc. for requiring constant force to export.Its feature
It is that the spring tension exported is more constant, tension variations are minimum.All it is that constant force spring stretching is directly opened into work directly in actual use
Displacement of the lines is moved, and fixed force spring is exported constant thrust.
The existing product tension spring dynamics of bearing is restricted, some electronic equipments especially display tension spring is needed to pulling force
It is ascending, offset gravity and inertia force, but existing tension spring is difficult to meet its requirement, mounting stability is poor, easily cashes.
Utility model content
In view of the shortcomings of the prior art, the utility model aim be to provide a kind of spring its stretch it is longer but
The bigger positive characteristic pulling force scrollwork tension spring of pulling force, and stable structure, are unlikely to deform, and processing is simple, of low cost, can extensive use
Have in various in the gradual increased balancing device of requirement pulling force output of particular/special requirement.
To achieve these goals, the utility model is to realize by the following technical solutions：
A kind of positive characteristic pulling force scrollwork tension spring, including a metallic elastic piece with equal thickness wind the multi-turn to be formed and every
Mutually it is adjacent between circle, shape extends one section for the scroll wraps of hollow cylindrical and by the scroll wraps outermost metal elastic piece
One stretching end；It is characterized in that, set from stretching end to scroll wraps direction as elongated direction, the metal elastic of the scroll wraps winding
Property piece by it is described stretching end stretch flattening when, the metallic elastic on piece, which is provided with pulling force, is incremented by area, and the pulling force is incremented by
The effective work width of metallic elastic piece is gradually incremented by along the elongated direction in area.
Further, the metallic elastic on piece being incremented by the pulling force in area is equipped with elongated hole, the length along elongated direction
Shape hole width along elongated direction successively decreases.
Further, the both sides long side of the elongated hole is arranged to the symmetrical curve of the axis of symmetry of metallic elastic piece.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the curve is curved line.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the curve is straight line.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the metallic elastic piece of the scroll spring is at least two
Piece is close to composite integrated and winds to form scroll wraps.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the stretching end of the metallic elastic piece is provided with pulling eye or drawing
Hook.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the elongated hole is trapezoidal hole, each turning of the trapezoidal hole
Fillet is arranged to, to reduce stress concentration, extend the metallic elastic piece service life.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the pulling force is incremented by the width of metallic elastic piece in area
Gradually it is incremented by.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, the metallic elastic piece is elastic steel sheet.
The utility model is reached by setting spring foil metal to be gradually incremented by from stretching end to inner effective width
The bigger situation of pulling force is more elongated, so that as the pulling force that the elongation of spring metal leaf length is born is bigger, is applicable to show
In the lifting support of device, comply with the device that the output of various requirement pulling force gradually increases, reduce spring negative function power
Use, will greatly reduced force transformation mechanism, organization volume be substantially reduced, agency cost drastically declines, and material consumption is obvious
Reduce, cost substantially reduces and environmental, its stable structure, is unlikely to deform, and processing is simple.
Brief description of the drawings
Describe the utility model in detail with reference to the accompanying drawings and detailed description；
Structure diagram when Fig. 1 evens up for the utility model.
Fig. 2 is another example structure schematic diagram of the utility model.
Embodiment
To make the technical means, creative features, achievable purpose and effectiveness that the utility model is realized easy to understand, below
With reference to embodiment, the utility model is expanded on further.
Embodiment 1：
Referring to Fig. 1, a kind of positive characteristic pulling force scrollwork tension spring of the present embodiment, including a metallic elastic piece with equal thickness
10 wind the multi-turn formed and are mutually adjacent between often enclosing, shape is for hollow cylindric scroll wraps 20 and by the scroll wraps 20
Outermost metal elastic piece extends one section of a stretching end 12；The metallic elastic piece that the scroll wraps 20 are wound is by the stretching
When end 21 stretches flattening, if being elongated direction from stretching end 12 to scroll wraps 20, being provided with pulling force on metallic elastic piece 10 is incremented by
Area 30, the effective width that the pulling force is incremented by the metallic elastic piece 10 in area 30 are gradually incremented by along the elongated direction, this implementation
Along elongated direction elongated hole 11 is equipped with the metallic elastic piece 10 of example, from the cross-sectional direction of metallic elastic piece 10,
The width of its elongated hole gradually successively decreases along the elongated direction in 11 length section of elongated hole, from the length made in the elongated hole 11
The effective work width of metallic elastic piece 10 is gradually incremented by section, and elastic pulling force is also corresponding therewith to be incremented by.
The present embodiment, effective work width refers to the effective length in metallic elastic piece cross-sectional direction, that is, has gold
Belonging on the cross section of elasticity, there is the sum of length of area to be referred to as effective length.
Further, the both sides long side of the elongated hole 11 of the metallic elastic on piece is with the symmetrical of metallic elastic piece
The curve of axisymmetrical, the curve are that curved line can also be straight line.
In addition, in the present embodiment, the metallic elastic piece of scroll spring is at least two panels and is close to composite integrated winding shape
Into scroll wraps.The stretching end 12 of metallic elastic piece 10 is provided with pulling eye 13 or pull hook.
According to above-mentioned characteristic pulling force scrollwork tension spring, wherein, each turning of the elongated hole 11 is arranged to fillet, to reduce
Stress concentration, extend the metallic elastic piece service life.Metallic elastic piece in the present embodiment is elastic steel sheet.
Embodiment 2：
Referring to Fig. 2, a kind of positive characteristic pulling force scrollwork tension spring of the present embodiment, including a metallic elastic piece 10 winding formation
Multi-turn and be mutually adjacent between often enclosing, shape is for hollow cylindric scroll wraps 20 and by the 20 outermost metal bullet of scroll wraps
Property piece extend one section one stretching end 12；The metallic elastic piece 10 that the scroll wraps 20 are wound is stretching exhibition by the stretching end 12
Usually, if being elongated direction from stretching end 12 to scroll wraps, the metallic elastic piece 10 is provided with pulling force and is incremented by area 30, the drawing
The metallic elastic piece width that power is incremented by area 30 is gradually incremented by along the elongated direction, the metallic elastic piece is passed in the pulling force
The effective work width increased in the length section in area 30 is gradually incremented by, and elastic pulling force is also corresponding therewith to be incremented by.
The pulling force of the present embodiment is incremented by the trapezoidal structure of metallic elastic piece after being stretched in area 30, the metallic elastic piece 10
At least two panels is close to composite integrated and winds to form scroll wraps 20, be provided with the stretching end 12 of metallic elastic piece 10 pulling eye 13 or
Pull hook.
But gone to draw two different springs with an equal amount of power, the length of elongation is different, this explanation spring has " soft "
Point of " hard ", the spring being easily stretched is relatively soft, otherwise the soft or hard stiffness coefficient with it of harder springs represents that is firm
Property coefficient is bigger, and spring is harder.
In addition, in the case of to realize that the more drawing pulling force of tension spring is bigger, it can also use, spring foil metal is by stretching end extremely
The incremental mode of inner thickness is realized.
The utility model is reached by setting spring foil metal to be gradually incremented by from stretching end to inner effective width
The bigger situation of pulling force is more elongated, so that as the pulling force that the elongation of spring metal leaf length is born is bigger, is applicable to show
In the lifting support of device, comply with the device that the output of various requirement pulling force gradually increases, reduce spring negative function power
Use, will greatly reduced force transformation mechanism, organization volume be substantially reduced, agency cost drastically declines, and material consumption is obvious
Reduce, cost substantially reduces and environmental, its stable structure, is unlikely to deform, and processing is simple.
The advantages of basic principle and main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of positive characteristic pulling force scrollwork tension spring, including a metallic elastic piece with equal thickness wind the multi-turn to be formed and often enclose
Between be mutually adjacent to, shape extends one section for the scroll wraps of hollow cylindrical and by the scroll wraps outermost metal elastic piece
One stretching end；It is characterized in that, set from stretching end to scroll wraps direction as elongated direction, the metallic elastic of the scroll wraps winding
Piece is provided with pulling force in the metallic elastic on piece and is incremented by area, the pulling force is incremented by area when stretching flattening by the stretching end
The effective work width of interior metallic elastic piece is gradually incremented by along the elongated direction.
2. a kind of positive characteristic pulling force scrollwork tension spring according to claim 1, it is characterised in that be incremented by the pulling force in area
Metallic elastic on piece be equipped with elongated hole along elongated direction, elongated hole width along elongated direction successively decreases.
A kind of 3. positive characteristic pulling force scrollwork tension spring according to claim 2, it is characterised in that the both sides length of the elongated hole
While it is arranged to the symmetrical curve of the axis of symmetry of metallic elastic piece.
4. a kind of positive characteristic pulling force scrollwork tension spring according to claim 3, it is characterised in that the curve is curved line.
5. a kind of positive characteristic pulling force scrollwork tension spring according to claim 3, it is characterised in that the curve is straight line.
6. a kind of positive characteristic pulling force scrollwork tension spring according to claim 1, it is characterised in that the metallic elastic piece is at least
It is close to composite integrated for two panels to wind to form scroll wraps.
A kind of 7. positive characteristic pulling force scrollwork tension spring according to claim 1, it is characterised in that the drawing of the metallic elastic piece
Stretch end and be provided with pulling eye or pull hook.
8. a kind of positive characteristic pulling force scrollwork tension spring according to claim 1, it is characterised in that the metallic elastic piece is bullet
Property steel disc.
A kind of 9. positive characteristic pulling force scrollwork tension spring according to claim 6 to 8 any one, it is characterised in that the drawing
The width that power is incremented by metallic elastic piece in area is gradually incremented by along elongated direction.
A kind of 10. positive characteristic pulling force scrollwork tension spring according to claim 2 to 5 any one, it is characterised in that the length
Shape hole is trapezoidal hole, and each turning of the trapezoidal hole is arranged to fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721232032.XU CN207333525U (en) | 2017-09-22 | 2017-09-22 | A kind of positive characteristic pulling force scrollwork tension spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721232032.XU CN207333525U (en) | 2017-09-22 | 2017-09-22 | A kind of positive characteristic pulling force scrollwork tension spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333525U true CN207333525U (en) | 2018-05-08 |
Family
ID=62369744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721232032.XU Expired - Fee Related CN207333525U (en) | 2017-09-22 | 2017-09-22 | A kind of positive characteristic pulling force scrollwork tension spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333525U (en) |
-
2017
- 2017-09-22 CN CN201721232032.XU patent/CN207333525U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20200922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |