CN2247740Y - Continuous enternal and external reverse type cone spring - Google Patents

Abstract

The utility model relates to a spring, and more specifically, the utility model relates to a continuous external and external reverse type conical spring. The utility model is wound by a single wire diameter or a slab billet, the starting end surface rises helically from bottom to top, a rising profile gradually shrinks to form a cone at a predetermined angle conical degree, when the utility model rises to a predetermined horizontal end surface, the utility model lowers helically from top to bottom in reverse direction, and the lowering profile shrinks gradually to form an inverted cone at the predetermined angle conical degree to form a bottom end surface when the utility model lowers to the predetermined horizontal end surface.

Description

The tapered spring of continuous inwardly-outwardly reverse type

The utility model is relevant spring, and detailed is to refer to the tapered spring of a kind of continuous inwardly-outwardly reverse type.

Common to all, the purposes of spring is very wide, is almost the indispensable element of common mechanical.Do the time spent when it is subjected to external force, promptly produce resiliently deformable, thereby stored strain energy and disengaging at random.The kind of spring material is a lot of, can be divided into wire spring (wiresprings), leaf spring (flat springs) and special spring etc., and can be divided into kinds such as the straight tube of compression spring, the straight tube of pulling force spring, torsion coil spring, volute spring aspect the wire spring appearance, can select suitable spring body according to the difference of its application.

To formula elastic force back and forth under the occasion of utilization, and in limited largest motion stroke Space L, mostly adopt straight tube spring (as shown in Figure 1) or volute spring (as shown in Figure 2) on the wire spring classification directly.And the time suppose that its maximum stress is no more than under the situation of elastic limit in operation, the shortcoming of straight tube spring has compression contact engaging phenomenon when lying in frequent reciprocal operation, that is can cause two of the spring body coil of being separated by to engage, and makes handling not good.Moreover when compression certain-length L1 when forming entire length and become dense accumulation length L 2, then spring body can't go compression again, makes the application of elastic force size be subject to dense accumulation length L 2, the while, whole compression volume was little.With regard to volute spring, though also upwards form the small coil circle footpath of upper end into a cone shape around volume for big coil circle footpath owing to its lower end, therefore under frequent back and forth operation, during pressing, do not have compression engaging phenomenon between big small coil, has bigger compression volume simultaneously, yet in the pressing process, because this volute spring is in whole pressing process, its spring constant also is worth and is a parameter very much, that is this volute spring is the line footpath generation distortion in regular turn by coil place, big footpath during initial pressing, this moment, elasticity coefficient was less, through initial pressing after date, the path coil of the coil of middle-end and upper end produces distortion, therefore has bigger elasticity coefficient; In other words, this elasticity returns the power of releasing and compress variation is not that linear ratio (non-linear proportion) rises, and therefore the flexibility of controlling is not good.

Because above-mentioned disappearance, main purpose of the present utility model is to be to provide a kind of reverse formula tapered spring, and it is operated submissive and have better elasticity and returns the power of releasing.

Another purpose of the present utility model is to be to provide a kind of continuous inwardly-outwardly reverse type tapered spring, and its compression the time can not produce two phenomenons that coil engages mutually of being separated by, and has more evenly elasticity at limited compression volume simultaneously and returns and release the power utilization.

According to above-mentioned purpose, the utility model provides a kind of continuous inwardly-outwardly reverse type tapered spring, system forms around volume with single line footpath, it is soaring with helical from lower to upper that it plays end face, its soaring gabarit forms a cone with a predetermined angle tapering convergent, and after up rising to a predeterminated level end face, another mistake is climbed with helical to from top to bottom and fallen, it is climbed the gabarit of falling and forms an inverted cone with a predetermined angle tapering convergent, and down climbs and reduce to a predeterminated level end face and form a terminal surface.

Now enumerate embodiment and conjunction with figs. below and do further to describe in detail for the purpose of this utility model, feature and effect, wherein:

The rough schematic of straight tube spring-operated action is commonly used by Fig. 1 system.

The rough schematic of volute spring act of operation is commonly used by Fig. 2 system.

Fig. 3 is the tapered spring stereoscopic of the utility model one preferred embodiment continuous inwardly-outwardly reverse type figure.

Fig. 4 is the rough schematic of the act of operation of Fig. 3.

Fig. 5 is the top view of Fig. 3.

Fig. 6 is the sectional view of another preferred embodiment of the utility model.

Fig. 7 is the sectional view of the another preferred embodiment of the utility model.

Fig. 8 is the utility model sectional view of a preferred embodiment again.

Fig. 9 is the more sectional view of a preferred embodiment of the utility model.

At first see also Fig. 3 to shown in Figure 5, the tapered spring of the reverse formula of the utility model system reels with single line footpath 10 and forms, this line directly can be the qin steel wire, STAINLESS STEEL DRAW WIRE or other materials are made, it plays end face 11 is to be processed to form one first horizontal end face 111, it is soaring with helical from lower to upper, its soaring gabarit forms a cone 12 with a predetermined angle tapering (α 1) convergent, and after up rising to the horizontal end face 13 of a predetermined altitude, another mistake is climbed with helical to from top to bottom and is fallen, it is climbed the gabarit of falling and forms an inverted cone 14 with a predetermined angle tapering (α 2) convergent, and down climb and reduce to a terminal surface 15 and be processed to form one second horizontal end face 151, and this second horizontal end face 151 and this first horizontal end face 111 are rough high state such as becomes; Other make this whole spring body interior outer cone play end face and terminal surface is distributed on the same end.

Again act of operation of the present utility model is described as follows:

In revolving with the pressing by outside force process, because the coil of wire place, big footpath of this cone 12 and the path coil of this inverted cone 14 are in same end, and the big footpath coil of the path coil of this right circular cone 12 and this inverted cone 14 is in the other end, because the inversion arrangement mode of this cone 12 and this inverted cone 14, make in the whole pressing process, this external force carrying capacity and compress variation are variation in uniform mode, cause whole pressing process comparatively submissive.Certainly, its maximum carrying capacity is W, (if line directly is circle footpath person) as follows: $w$ $=$ $\frac{\mathrm{\π}{d}^3\mathrm{\τ}}{16{\mathrm{\γ}}_1}+\frac{\mathrm{\π}{d}^3\mathrm{\τ}}{16{\mathrm{\γ}}_2}$ Wherein W is a maximal workload

D is the line footpath

τ is that maximum is cut off stress

r ₁Big footpath coil radius for right circular cone 12

r ₂Big footpath coil radius for inverted cone 14

r ₃Path coil radius for inverted cone 14

Therefore relatively commonly use single identical maximum diameter volute spring, better elastic force is arranged; In addition when its operation of hypothesis, its maximum stress is no more than under the elastic limit of line footpath 10 materials itself, the tapered spring of the utility model continuous inwardly-outwardly reverse type has maximum compression volume simultaneously, even can make a horizontal plane such as each coil compression formation and overlapping person not, as shown in Figure 5.In other words, its structure can provide preferable elasticity under a specific height space limits.

Certainly, the tapered spring of the utility model continuous inwardly-outwardly reverse type is in order to make whole spring body in application of force pressing process, cause has submissiveer effect or the generation of pre-power is arranged before use because of special purpose, in design, the second horizontal end face 151 that can make this inverted cone 14 is the high first horizontal end face 111 of dashing forward or being recessed below this cone 12, as shown in Figure 6 and Figure 7.For outer cone strain shape amount in making reaches specific effect, also can make this cone 12 different free lengths be arranged in addition, to obtain the effect design of optimization (Optimum) with this inverted cone 14.

What must be illustrated is again, the tapered spring of the utility model continuous inwardly-outwardly reverse type, also can be according to the demand and the design of the maximum outside diameter and the required elastic force of coil, and these inverted cone 14 terminal surfaces 15 another mistakes have been climbed to the spiral that makes progress, arrange with the cone that forms the reverse formula of circulation, wherein be illustrated in figure 8 as and form three interior external cone, an end face and the terminal surface of its whole spring body are distributed on the two ends; The line of the tapered spring of the utility model continuous inwardly-outwardly reverse type footpath also can be square, ellipse etc. in addition; The tapered spring of the utility model continuous inwardly-outwardly reverse type can also single lath coiling and molding again, as shown in Figure 9.

According to this, the utility model has the advantage of:

(1) the utility model ties up in the limited largest motion stroke space, provides one Bigger elasticity, and in the compression process, unlikely generation coil engages mutually.

(2) number of turns out of the ordinary of the inversion arrangement of Outer Taper, interior Outer Taper and circle were apart from drift (Natural Length) and the various combination of control and interior Outer Taper in the utility model system utilized, one uniform elastic force is provided, reach design optimization

(3) difference of the drift of Outer Taper in the utility model system utilizes, and can The generation person of pre-power (Pre-load) applies in a flexible way.

(4) the utility model can optionally be used in the same end ending place (promptly playing end face and terminal surface in same end) of outer cone in the even numbers at fit on; Or the ending place (promptly playing end face and terminal surface) that adopts the corresponding end of odd number awl in the opposite end person.

In sum, the tapered spring of the utility model continuous inwardly-outwardly reverse type really has progressive effect, and confirms through actual sample, really can reach technical Expected Results, again through looking into related data and document and finding no identical person.

Claims (5)

1. tapered spring, it is characterized in that being the continuous inwardly-outwardly reverse type volute spring, be to form around volume with single line footpath or lath, it is soaring with helical from lower to upper that it plays end face, its soaring gabarit forms a right circular cone with a predetermined angle tapering convergent, and after up rising to a predeterminated level end face, another mistake is climbed with helical to from top to bottom and fallen, it is climbed the gabarit of falling and forms an inverted cone with a predetermined angle tapering convergent, and down climbs and reduce to a predeterminated level end face and form a terminal surface.

2. tapered spring according to claim 1, the terminal surface that it is characterized in that this inverted cone and this cone play that end face is rough high state such as to become.

3. tapered spring according to claim 1 is characterized in that the terminal surface system height of this inverted cone is dashed forward in the end face of this cone.

4. tapered spring according to claim 1 is characterized in that the terminal surface system of this inverted cone is recessed below the end face that rises of this cone.

5. tapered spring according to claim 1, but it is characterized in that this inverted cone terminal surface another mistake climbed to spiral upwards, to form the cone arrangement of the reverse formula of circulation.

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