CN208831571U - A kind of double helix limit spring - Google Patents
A kind of double helix limit spring Download PDFInfo
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- CN208831571U CN208831571U CN201821610742.6U CN201821610742U CN208831571U CN 208831571 U CN208831571 U CN 208831571U CN 201821610742 U CN201821610742 U CN 201821610742U CN 208831571 U CN208831571 U CN 208831571U
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- spring
- inner spring
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- double helix
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Abstract
The utility model discloses a kind of double helix limit spring, belongs to spring technical field.The double helix limit spring includes being arranged with one heart and the equal inner spring and outer spring of height, the upper vortex-like spring being connect respectively with the upper extreme point of the upper extreme point of inner spring and outer spring, and vortex-like spring is connect down with the lower extreme point of the lower extreme point of inner spring and outer spring respectively, finite place piece is connected between the upper extreme point and lower extreme point of inner spring, length of the locating part in the central axial direction of inner spring is adjustable, the minimum length of locating part is greater than the length that inner spring is in limited compression state, the maximum length of locating part is less than the length that inner spring is in ultimate elongation state.When entire double helix limit spring stress, the length of locating part is elongated or shortened with inner spring.When the protrusion on a gag lever post blocks the sliding slot of another gag lever post, inner spring cannot be compressed or be stretched again, and the lesser inner spring of maximal work intensity is thus prevented to fail because of excess compression or stretching.
Description
Technical field
The utility model relates to spring technical field more particularly to a kind of double helix limit springs.
Background technique
Double-helix spring due to not only maintaining the high energy storage and high reaction speed of spring, but also increase spring durability and
Firmness is therefore widely used in industrial production.Double-helix spring is concentric by two springs that height is identical, internal diameter is different
It is arranged to be formed.The maximal work that the maximal work intensity of internally positioned little spring is generally less than set in external big spring is strong
Degree, little spring is easy to be overly compressed or stretch and fail under same load.
Utility model content
The purpose of this utility model is to provide a kind of double helix limit springs, and internally positioned little spring can be prevented in work
It is overly compressed or stretches and fail during making.
To achieve the above object, the following technical schemes are provided:
A kind of double helix limit spring, including be arranged with one heart and the equal inner spring and outer spring of height, respectively with it is described
The upper vortex-like spring of the upper extreme point of the upper extreme point of inner spring and outer spring connection and the respectively lower end with the inner spring
Point connects down vortex-like spring with the lower extreme point of the outer spring, connects between the upper extreme point and lower extreme point of the inner spring limited
Position part, length of the locating part in the central axial direction of the inner spring is adjustable, and the minimum length of the locating part is big
It is in the length of limited compression state in the inner spring, the maximum length of the locating part is less than the inner spring and is in the limit
The length of tensional state.
Further, the locating part includes two gag lever posts, two gag lever posts are L-shaped and one end respectively with institute
The upper extreme point for stating inner spring is connected with lower extreme point, is arranged on gag lever post described at least one along the inner spring central axial direction
There is sliding slot, being provided on another gag lever post can be in the sliding slot along the central axial direction sliding of the inner spring
Protrusion.
Further, the double helix limit spring in the raw when, it is described protrusion be located at the sliding slot middle part.
Further, sliding slot is equipped on two gag lever posts.
Further, the sliding slot and the raised section perpendicular to the inner spring central axial direction are T word
Shape, and the escape groove for being connected to described sliding slot one end is additionally provided on the gag lever post, the escape groove can accommodate the protrusion.
Further, the protrusion is set to one end end that the gag lever post is not connect with the inner spring.
Further, the locating part includes two limit elements, and each limit element includes L shape interconnected
Curved bar and link ring, two L shape curved bars do not link one end that ring is connect upper extreme point with the inner spring respectively with described
It is connected with lower extreme point, ring is linked described in two and mutually hooks set and can be relatively moved along the inner spring central axial direction.
Further, the double helix limit spring in the raw when, linked described in one of them ring hook set end
Positioned at the center for linking ring described in another.
Further, the ring that links is bar shaped ring.
Further, the hand of spiral of the inner spring and the outer spring is opposite.
Compared with prior art, in double helix limit spring provided by the utility model, length-adjustable locating part both ends
It being connect respectively with the upper and lower ends of inner spring, the minimum length of locating part is greater than the length that inner spring is in limited compression state,
And the maximum length of locating part is less than the length setting that inner spring is in ultimate elongation state, when the protrusion card on a gag lever post
Firmly when the sliding slot of another gag lever post, inner spring cannot be compressed or be stretched again, so prevent inner spring be overly compressed or
It stretches and and then leads to entire spring failure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double helix limit spring provided by the embodiment of the utility model；
Fig. 2 is the cross-sectional view of inner spring provided by the embodiment of the utility model；
Fig. 3 is the direction view in Fig. 2 at A-A.
Appended drawing reference:
1- inner spring；2- outer spring；The upper vortex-like spring of 3-；Vortex-like spring under 4-；5- gag lever post；51- sliding slot；52- protrusion；
53- escape groove.
Specific embodiment
The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer,
It is described in further detail below in conjunction with technical solution of the attached drawing to the utility model embodiment, it is clear that described reality
Applying example is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention,
It is practical new to belong to this for those skilled in the art's every other embodiment obtained without making creative work
The range of type protection.
As shown in Figure 1, it is the structural schematic diagram of double helix limit spring provided in this embodiment.The double helix limits bullet
Spring include inner spring 1, outer spring 2, upper vortex-like spring 3, under vortex-like spring 4 and locating part.2 concentric locking collar of inner spring 1 and outer spring
And if height it is equal, upper vortex-like spring 3 is connect with the upper extreme point of inner spring 1 and outer spring 2 respectively, under vortex-like spring 4 respectively with
Inner spring 1 is connected with the lower extreme point of outer spring 2.The inside and outside inner spring 1 being arranged and outer spring 2 pass through upper vortex-like spring 3 and lower whirlpool
Shape spring 4 connects, and keeps total more stable, stress is more balanced.Preferably, the spiral side of inner spring 1 and outer spring 2
To on the contrary, further increasing overall stiffness.
Fig. 2 is the cross-sectional view of inner spring 1 provided in this embodiment.It can be seen that locating part is set to 1 center of inner spring and tool
Body includes two L-shaped gag lever posts 5, and the vertical portion of two gag lever posts 5 is symmetrically set relative to the central axis of inner spring 1
It sets.One end of two gag lever posts 5 is connected with the upper extreme point of inner spring 1 and lower extreme point respectively, and locating part is along 1 central axis side of inner spring
To length be equal to inner spring 1 height.The cunning for being parallel to 1 central axial direction of inner spring is provided on two gag lever posts 5
Slot 51, and the one end not connecting with inner spring 1 on two gag lever posts 5 is provided with protrusion 52.Protrusion 52 on one gag lever post 5 is inserted
Enter into the sliding slot 51 of another gag lever post 5, when double helix limit spring is stretched or compressed, band of the protrusion 52 in inner spring 1
It is moved up and down under dynamic in the axis direction in sliding slot 51 along inner spring 1, so that the length of locating part is stretched with inner spring 1
Or it compresses and accordingly elongates or shortens.When protrusion 52 blocks sliding slot 51, spring cannot be stretched or compressed again, the ruler of sliding slot 51
It is very little certain, it is limited with the sliding distance to the protrusion 52 in sliding slot 51, and then guarantee that the maximum length of locating part is less than
Inner spring 1 is in the length of ultimate elongation state, and so that the minimum length of locating part is greater than inner spring 1 and be in limited compression state
Length, finally make inner spring 1 not to be excessively stretched or compress and fail.
It is worth noting that being provided with sliding slot 51 and protrusion 52 on two gag lever posts 5 in the present embodiment.In inner spring 1
When the equal length that is stretched or compressed, if sliding slot 51 is only opened up on a gag lever post 5 wherein or protrusion 52 can be because of wherein one
Gag lever post 5 is longer and unstability or fracture.Protrusion 52 is preferably disposed on one end end not connecting with inner spring 1 on gag lever post 5, into
And the overall length of gag lever post 5 can be made full use of, further prevent gag lever post 5 too long and unstability or fracture.Certainly, in other realities
It applies in example, only can also open up sliding slot 51 on a gag lever post 5 wherein, and protrusion 52 is only set on another gag lever post 5, and
Protrusion 52 may also set up in the position close to 5 middle part of gag lever post, as long as can guarantee that protrusion 52 can slide up and down in sliding slot 51,
The length of locating part can be with the height change of inner spring 1.Further, double helix limit spring in the raw
When, protrusion 52 is located at the middle part of sliding slot 51, so that the length that inner spring 1 is compressed or stretched is the same, and unlikely makes 1 quilt of inner spring
Compression or the amount stretched are too small.
Fig. 3 is direction view of the gag lever post 5 at A-A in Fig. 2, it can be seen that sliding slot 51 is perpendicular to 1 central axis of inner spring
The section in direction be it is T-shaped, further, protrusion 52 is along being also T-shaped perpendicular to the cross section of 1 central axial direction of inner spring
(not shown) can prevent the protrusion 52 when double helix limit spring run-off the straight to be detached from sliding slot 51, and then play guiding and make
With.When using the above structure, it is also necessary to which one end on gag lever post 5 close to sliding slot 51 is opened up perpendicular to 5 length direction of gag lever post
And the escape groove 53 being connected to sliding slot 51, the size of escape groove 53 are greater than the size of protrusion 52 can accommodate protrusion 52, make convex
Playing 52 can be entered in sliding slot 51 by escape groove 53.
In other embodiments, locating part can be also made of two limit elements, and each limit element includes mutually interconnecting
The L shape curved bar that connects and link ring, two L shape curved bars not with link one end that ring is connect respectively with the upper extreme point of inner spring 1 and under
Endpoint connects, and the ring that links on two limit elements mutually hooks set, and can relatively move along the central axial direction of inner spring 1,
So that locating part can extend or contract with the stretching or compression of inner spring 1 along the length of 1 central axial direction of inner spring
It is short.
Further, double helix limit spring in the raw when, a hook set end for linking ring is located at another and hooks
A chain of center, so that length when inner spring 1 is stretched or is compressed is identical.When inner spring 1 is stretched, two link ring edge
1 central axial direction of inner spring moves down upwards respectively, until lower section link ring hooks set end take be put in above link ring
When hooking set end, inner spring 1 cannot continue to stretch again, and inner spring 1 is avoided to be excessively stretched.When inner spring 1 is compressed, two
It links ring to move toward one another along 1 central axial direction of inner spring, links ring most when the hook set end that lower section links ring is supported in top
The hook set end that upper end or top link ring is connected to lower section when linking the bottom of ring, and inner spring 1 cannot continue to press again
Contracting, avoids inner spring 1 from being overly compressed.Further, linking ring is preferably bar shaped ring, both processing is facilitated to link ring, can also be protected
Card two is linked and can effectively be abutted between ring.
In double helix limit spring provided in this embodiment, length-adjustable locating part is equipped in inner spring 1, locating part
Both ends are connect with the endpoint up and down of inner spring 1 respectively.When entire double helix limit spring stress, locating part is in inner spring 1
It is elongated or shortened under effect with inner spring 1.When the protrusion 52 on a gag lever post 5 blocks the sliding slot 51 on another gag lever post 5
When, inner spring 1 cannot be compressed or be stretched again, thus prevent the lesser inner spring of maximal work intensity 1 because of excess compression
Or it stretches and fails.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of double helix limit spring, which is characterized in that including the inner spring (1) and outer spring being arranged with one heart and height is equal
(2), the upper vortex-like spring (3) that is connect respectively with the upper extreme point of the upper extreme point of the inner spring (1) and the outer spring (2), with
And connect down vortex-like spring (4) with the lower extreme point of the lower extreme point of the inner spring (1) and the outer spring (2) respectively, it is described
Finite place piece, central axis of the locating part in the inner spring (1) are connected between the upper extreme point and lower extreme point of inner spring (1)
Length on direction is adjustable, and the minimum length of the locating part is greater than the length that the inner spring (1) is in limited compression state,
The maximum length of the locating part is less than the length that the inner spring (1) is in ultimate elongation state.
2. double helix limit spring according to claim 1, which is characterized in that the locating part includes two gag lever posts
(5), two the gag lever post (5) is L-shaped and one end is connect with the upper extreme point of the inner spring (1) and lower extreme point respectively, until
It is provided with sliding slot (51) on a few gag lever post (5) along the inner spring (1) central axial direction, another limit
The protrusion (52) that can be slided in the sliding slot (51) along the central axial direction of the inner spring (1) is provided on bar (5).
3. double helix limit spring according to claim 2, which is characterized in that the double helix limit spring is in nature
When state, the protrusion (52) is located at the middle part of the sliding slot (51).
4. double helix limit spring according to claim 3, which is characterized in that be equipped on two gag lever posts (5)
Sliding slot (51).
5. double helix limit spring according to claim 4, which is characterized in that the sliding slot (51) and the protrusion (52)
Section perpendicular to the inner spring (1) central axial direction is T-shaped, and is additionally provided with connection on the gag lever post (5)
The escape groove (53) of described sliding slot (51) one end, the escape groove (53) can accommodate raised (52).
6. double helix limit spring according to claim 5, which is characterized in that the protrusion (52) is set to the limit
One end end that bar (5) is not connect with the inner spring (1).
7. double helix limit spring according to claim 1, which is characterized in that the locating part includes two limit members
Part, each limit element include L shape curved bar interconnected and link ring, and two L shape curved bars are not linked with described
Ring connection one end be connected respectively with the upper extreme point of the inner spring (1) and lower extreme point, linked described in two ring mutually hook cover and
It can be relatively moved along the inner spring (1) central axial direction.
8. double helix limit spring according to claim 7, which is characterized in that the double helix limit spring is in nature
The hook set end that ring is linked when state, described in one of them is located at the center that ring is linked described in another.
9. double helix limit spring according to claim 8, which is characterized in that the ring that links is bar shaped ring.
10. -9 described in any item double helix limit springs according to claim 1, which is characterized in that the inner spring (1) and institute
The hand of spiral for stating outer spring (2) is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821610742.6U CN208831571U (en) | 2018-09-30 | 2018-09-30 | A kind of double helix limit spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821610742.6U CN208831571U (en) | 2018-09-30 | 2018-09-30 | A kind of double helix limit spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831571U true CN208831571U (en) | 2019-05-07 |
Family
ID=66317183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821610742.6U Active CN208831571U (en) | 2018-09-30 | 2018-09-30 | A kind of double helix limit spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208831571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963606A (en) * | 2020-09-08 | 2020-11-20 | 鹰潭九隆科技产业有限公司 | Rubber part with good buffering effect |
| CN113288313A (en) * | 2021-06-08 | 2021-08-24 | 航天中心医院 | Puncture department press device |
-
2018
- 2018-09-30 CN CN201821610742.6U patent/CN208831571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963606A (en) * | 2020-09-08 | 2020-11-20 | 鹰潭九隆科技产业有限公司 | Rubber part with good buffering effect |
| CN113288313A (en) * | 2021-06-08 | 2021-08-24 | 航天中心医院 | Puncture department press device |
| CN113288313B (en) * | 2021-06-08 | 2023-08-01 | 航天中心医院 | Puncture department pressing device |
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