Device to adjust rigidity of coiled spring

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly to suspensions. Proposed device comprises spring with different-diametre coils secured between the spring support plates. Inner and outer support plates 4, 3 are fitted on cylinder 6 of shock-absorbing post and radially spaced apart. When in 1st shock-absorbing position, spring 1 rests by section 1a of smaller-diametre coils d upon inner support plate 4. In 2nd shock-absorbing position (II), spring 1 rests by section 1b of larger-diametre coils D upon outer support plate 3.

EFFECT: simplified spring adjustment.

11 cl, 3 dwg

 

The present invention relates to a device for adjusting the rigidity of the spiral spring according to the restrictive part of paragraph 1 of the claims.

From DE 100045229 C2 system known spiral compression spring, at least two different otheractivities, and the system comprises at least two cylindrical regions of springs having different coil diameters, which are connected directly with each other, and in the inner space of the coils of this spring with a larger diameter coil has one essentially annular bearing surface of the pressure plate located on the outer end of the spring, the contact area of the spring with a smaller diameter coils. When this bearing surface provided in the inner space of the coils of the spring with a larger diameter coil may be height-adjustable by means of threads.

In addition, from DE 3728462 A1 famous twisted compression spring for vehicles with passing partially progressive characteristic and consists of two parts, springs connected with each other into one, one of which is made as a cylindrical part of the spring and the other adjacent to it in the axial direction, is designed as a barrel-shaped portion of the spring. The diameter of revolution of the cylindrical part of the spring is clearly m is nice, than the greatest diameter of the barrel part of the spring. For spiral compression spring defined dimensions so that there is a separation of the coils of the spring to achieve the progressive plot characteristics of the spring seat from the body.

The present invention is a device for adjusting the rigidity of the spiral springs for suspension of the wheels of the vehicle, which, according to selected provisions of the suspension is adjustable or adjustable in a simple way through a few details.

According to the present invention this task is solved by the characteristics of claim 1. Other preferred indications contained in sub-clauses.

The advantages achieved by the present invention mainly consist in the fact that the stiffness adjustment twisted springs for suspension of the wheels is achieved through the coupler and attach the coils of the spring, while one inner and one outer bearing plate spring is installed on the cylinder of the strut at a distance from each other in the radial direction, and depreciation in the first position the twisted spring last section of turns of small diameter is based on the internal reference spring plate, and the second cushioning position twisted springs last section turns of larger diameter is and relies only on the outer support plate spring.

In addition, according to the invention it is proposed that the depreciation in the first position one free bottom end of the spiral spring with a plot of turns of small diameter relied on internal support spring plate, and the other, the upper coils of larger diameter spiral springs were installed svobodnolezhaschie between the upper stationary support plate spring and the inner supporting plate springs. For arbitrarily setting the selected first and second cushioning position required installation height-adjustable in the axial direction of the inner bearing plate spring on the strut cylinder or on the corresponding elastic element and a stationary outer bearing plate spring on the strut cylinder, and according to another variant of the invention the required installation height-adjustable in the axial direction as the inner bearing plate spring, and the outer bearing plate spring on the strut cylinder or on the corresponding elastic element.

Disconnection or connection of the coils of the spring is achieved in a simple way by means of such schemes and opportunities permutation of the outer and/or inner bearing plate springs and a combination of the relevant sections of the coils of the spring of the small and large diameter with both the reference t is recami spring. Thus, the depreciation in the first position, also referred to as a normal position, the bottom coil of the spiral spring attached to the inner support plate springs on the coils and all of the additional above the coils are svobodnaia and svobodnolezhaschie.

Permutation supporting plates of the spring is made according to the supplementary proposal due to the fact that the inner support spring plate and the outer supporting plate spring configured to move the height adjusted by means of the Electromechanical or hydraulic Adjuster. Thus, it becomes possible permutation supporting plates springs in driving mode according to the specific conditions.

Thus, according to this invention it is possible to achieve easy way to gain depreciation others twisted springs by adjusting the height down the inner bearing plate spring for making the second cushioning position identified as sports position. For this purpose the lower part of coil springs or coils of the twisted spring is detached, so as one part of the twisted spring of larger diameter coil rests only on the outer support plate spring.

In addition, according to this invention, it is recommended that the s internal support spring plate had a similar rearrangement down with the to reverse the course of the wheel there was a gap between the bottom coil of the spring and the inner supporting plate springs. This is necessary so that when reverse motion of the wheels disconnected coil or coils disconnected by lifting them from the outer bearing plate spring coil located therein, again was engaged.

In addition, according to this invention provides that the inner support spring plate simultaneously with the outer supporting plate spring is adjustable in height so that compensation is achieved stiffness of the spring. By moving the height down the inner bearing plate spring and the outer bearing plate spring is achieved by lowering the body of the vehicle.

An example implementation of this invention shown in the drawings and described in more detail below.

Shown:

figure 1 depicts one twisted spring with different coil diameters, based on the supporting plate spring, with possible suspension provisions;

figure 2 depicts a twisted spring depreciation in the first position (normal position), and

figure 3 depicts a twisted spring depreciation in the second position (athletic position).

Twisted spring 1, for example, for a suspension of the wheels of the vehicle are fixed between the upper nebody the Noah supporting plate 2 springs and the lower supporting plate 3 or 4 springs as between the inner supporting plate 3 spring or outer supporting plate 4 springs. Twisted spring 1, for example, barrel-shaped may also consist of two cylindrical sections of different diameters. Twisted spring 1 surrounds one strut 5, both of the support plates 3 and 4 springs installed on the cylinder 6 strut or on the respective guide element. Twisted spring 1 contains one or more of the lower coils 1a and the small diameter d and the other adjacent the upper coils 1b and so on - with a large diameter D.

The inner support plate 4 spring installed on the strut cylinder 6 can be moved in height, and the outer supporting plate 3 spring fixed on the cylinder 6 strut. In another implementation, both the supporting plates 3 and 4, the springs can be mounted for movement in height. Permutation supporting plates 3 and 4 of the spring may be effected by hydraulic or Electromechanical adjustment device. Bearing plate springs contain a sleeve surrounding the cylinder 6 strut and guides the supporting plates 3, 4 springs on cylinder 6 strut.

Figure 2 shows a twisted spring 1 depreciation in the first position I, in the normal position. Himself the th round bottom 1A of the spring and the small diameter d is based on the internal supporting plate 4 springs and above the coils 1b springs, respectively twisted spring 1, installed svobodnaia. The outer support plate 3 of the spring in this position I is located at the same height with the inner supporting plate 3 and springs are not loaded.

In figure 3 shows the twisted spring 1 depreciation in the second position II, in a sports situation. The upper coil 1b spring of larger diameter D adjacent to the lower coil 1a of the spring and the small diameter d by lowering the inner bearing plate 4 spring, now relies exclusively on the outer support plate 3 spring, and the lower coil 1a of the spring is located svobodnaia indented with respect to the inner support plate 4 springs.

Thus, if the bottom coil 1a of the spring or several lower coils of the springs they are disabled, so only the springy characteristic of the plot twisted spring 1 is still active. This quasipotential spring accompanied by a sport-tuned suspension with understating vehicle in this depreciation position II (athletic position).

The inner support plate 4 spring must have such a gap relative to the bottom coil 1a of the spring in the suspension position I that even with reverse motion of the wheels cannot occur landing bottom coil 1a springs on oporn the th plate 4 springs.

According depreciation position II (athletic position) to the lower landing of the vehicle understatement of the body of the vehicle is inextricably linked with the strengthening of the suspension so that when the deflection of the spring is set, therefore, more rigid progressirovanie and, if required, during the reverse course softer progressirovanie. However, this may be balanced by the simultaneous regulation of the height of the outer bearing plate 4 springs. Through individual height adjustment of both supporting plates 3 and 4 springs fundamentally possible to set the height of the body of the vehicle.

1. Device for adjusting the rigidity of the spiral springs for suspension of the wheels of the vehicle, having different size diameters of the coils and secured between the support plates of the spring, wherein the inner and outer bearing plate (4, 3) spring installed on the cylinder (6) strut at a distance from each other in the radial direction and rely depreciation in the first position (I) of the spiral spring (1) section (1A) of turns of small diameter (d) on the inner support plate (4) springs, and depreciation in the second position (II) the twisted spring (1) plot (1b) of the coils of larger diameter (D) on the outer support plate (3) spring.

2. The device according to claim 1, characterized in that the depreciation in the first position (I) free the lower end of the spiral spring (1) section (1A) of turns of small diameter (d) is based on the internal support plate (4) springs and other top coils (1b) of the larger diameter of spiral spring (1) set svobodnolezhaschie between the fixed upper support plate (2) springs and inner supporting plate (4) spring.

3. The device according to claim 1 or 2, characterized in that the inner support plate (4) spring installed on the cylinder (6) strut or on the corresponding guide element with adjustable height in the axial direction, and the outer supporting plate (3) spring fixed on the cylinder (6) strut.

4. The device according to claim 1 or 2, characterized in that the inner support plate (4) of the spring and the outer supporting plate (3) spring installed on the cylinder (6) strut or on the guide element with adjustable height in the axial direction.

5. The device according to claim 1 or 2, characterized in that the inner and outer bearing plate (4, 3) spring, is arranged to move in height, are configured by Electromechanical or hydraulic Adjuster.

6. The device according to claim 1 or 2, otlichayas the same time, the inner support plate (4) spring depreciation in the first position (I) moved down in the direction of the arrow (P) in height so that the bottom coil (1A) of the spring and the small diameter (d) is svobodnaia indented (a) with respect to the inner support plate (4) springs, and the upper coil (1b) of the spring with a larger diameter (D) is supported on the outer support plate (3) spring.

7. The device according to claim 1 or 2, characterized in that the twisted spring (1) contains several lower coils (1A) small diameter (d)that depreciation in the first position (I) are svobodnaia relative to the inner support plate (4) spring.

8. The device according to claim 1 or 2, characterized in that the inner support plate (4) of the spring is such moves down in the direction of the arrow (P)when reverse motion of the wheel there is a gap between the bottom coil (1A) of the spring and the inner supporting plate (4) spring.

9. The device according to claim 1 or 2, characterized in that the inner support plate (4) of the spring relative to the outer support plate (3) spring mounted for movement in height so that when the deflection of the spring is set more rigid progressirovanie wheel, while the opposite course softer progressirovanie wheel.

10. The device according to claim 1 or 2, differently the, the inner support plate (4) spring moves the height simultaneously with the outer supporting plate of the spring so that compensation is achieved stiffness of the spring.

11. The device according to claim 1 or 2, wherein the rearranging of the inner and outer support plates (4, 3) spring down the height is achieved by lowering the body of the vehicle.



 

Same patents:

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Combined spring // 2346194

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2 cl, 3 dwg

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