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CN-121989606-A - Spring system with spring device

CN121989606ACN 121989606 ACN121989606 ACN 121989606ACN-121989606-A

Abstract

The invention relates to a spring system having a spring device for suspending a wheel suspension element relative to a vehicle body and means for actuating the spring device, wherein the spring device has a spring element which extends along a torsion axis (A) and has a plurality of torsion portions which are arranged one around the other in radial sequence, wherein adjacent torsion portions are separated from one another in each case, but are connected in a rotationally fixed manner in certain regions by connecting portions, wherein the innermost torsion portion and the outermost torsion portion each have an attachment region and one attachment region is connected to the vehicle body and the other attachment region is connected to the wheel suspension element. A controllable actuator is proposed which is designed to act on different torsion parts of the spring element relative to the vehicle body and to set the characteristics of the spring means.

Inventors

  • T. Gerhard's
  • R. GRAF
  • R. Xin Cen
  • P. Zanderbergen
  • R. Su Xieke

Assignees

  • 福特全球技术公司

Dates

Publication Date
20260508
Application Date
20251103
Priority Date
20241104

Claims (10)

  1. 1. Spring system with a spring device (1) for suspending a wheel suspension element relative to a vehicle body (50) and means for actuating the spring device (1), wherein the spring device (1) has a spring element (10), which spring element (10) extends along a torsion axis (A) and has a plurality of torsion portions (11-15) arranged one around the other in radial sequence, wherein adjacent torsion portions (11-15) are separated from each other in each case, but are connected in a rotationally fixed manner in certain regions by connecting portions (16-19), wherein the innermost torsion portion (11) and the outermost torsion portion (15) each have an attachment region (20, 21), and one attachment region (20, 21) is connected to the vehicle body (50) and the other attachment region (20, 21) is connected to the wheel suspension element, It is characterized in that Controllable actuators (30, 33, 35, 37) designed to act on different torsion portions (11-19) of the spring element (10) with respect to the vehicle body (50) and set the characteristics of the spring device (1).
  2. 2. The spring system according to claim 1, It is characterized in that The actuator (30) is arranged adjacent to the spring device (1) and is designed to generate an electric or magnetic field, wherein at least one chamber (31, 32) or other chamber, sealed by a closing plate, between torsion tubes located one inside the other and formed by torsion portions (11-19) of the spring element (10), is filled with an electrorheological or magnetorheological fluid acting on the electric or magnetic field within the spring device (1).
  3. 3. The spring system according to claim 2, It is characterized in that Exactly two chambers (31, 32) or more chambers (31, 32) formed by torsion portions (11-19) of the spring element (10) are filled with the electrorheological fluid or the magnetorheological fluid to which the electric field or the magnetic field acts.
  4. 4. The spring system according to claim 2, It is characterized in that Exactly two or more chambers (31, 32) are formed by torsion portions (11-19) of the spring element (10), and only one of the two chambers (31, 32) is filled with the electrorheological fluid or the magnetorheological fluid to which the electric or magnetic field acts.
  5. 5. The spring system according to any one of the preceding claims, It is characterized in that At least one of the torsion portions (11-19) of the spring element (10) is connected to a blocking element (34), and the blocking element (34) is connected to the actuator (33).
  6. 6. The spring system according to claim 5, It is characterized in that The actuator (33) is connected to the innermost torsion portion (11) via the blocking element (34).
  7. 7. The spring system according to claim 5 or 6, It is characterized in that The actuator (33) is connected via the blocking element (34) to a torsion part (13) surrounding the innermost torsion part (11) and/or at least to another torsion part surrounding the innermost torsion part (11).
  8. 8. The spring system according to any one of claim 5 to 7, It is characterized in that The actuator (33) is connected to the innermost torsion portion (11) via the blocking element (34) and to the torsion portion (13) surrounding the innermost torsion portion (11).
  9. 9. The spring system according to any one of the preceding claims, It is characterized in that At least one of the torsion portions (11-19) of the spring element (10) is connected to the actuator (35) via a friction coupling (36).
  10. 10. The spring system according to any one of the preceding claims, It is characterized in that At least one of the torsion portions (11-19) of the spring element (10) is connected to the actuator (37) via a belt transmission (38).

Description

Spring system with spring device Technical Field The invention relates to a spring system with a spring device for suspending a wheel suspension element relative to a vehicle body and with means for actuating the spring device, which spring system has the features of the preamble of claim 1. Background A spring device for suspending a wheel suspension element relative to a vehicle body is known from DE 10 2020 213 644 B4. The spring device has a spring element which extends along a torsion axis and has a plurality of torsion portions arranged one around the other in radial sequence, wherein adjacent torsion portions are separated from each other in each case by a main portion (predominantly) but are connected in a rotationally fixed manner in certain regions by connecting portions, wherein the innermost torsion portion and the outermost torsion portion each have an attachment region and one attachment region is connected to the vehicle body and the other attachment region is connected to the wheel suspension element. As means for actuating the spring device, a plurality of individually adjustable locking elements are provided, via which different torsion parts of the spring element can be selectively locked or released with respect to the vehicle body. The known spring device has a compact design and makes full use of the available installation space. However, a disadvantage is that a plurality of individually adjustable locking elements is associated with increased component diversity and installation effort. Furthermore, the custom characteristic of the spring element cannot be set via the locking elements, since these can only lock or release different torsion parts of the spring element relative to the vehicle body. US 8 827 287 B2 describes an axle control element of a motor vehicle with a torsion spring system as an accumulator spring, which torsion spring system is connected on the one hand via a swivel arm to a wheel guiding element and on the other hand is fixedly supported on the vehicle body via a controllable actuator, wherein the torsion spring system has at least one torsion tube and at least one torsion bar nested within each other, wherein the actuator consists of a servomotor unit and a pivotably controllable drive rod, which servomotor unit is spaced apart from the torsion spring system and is fixed to the vehicle body, the drive rod being connected to said servomotor unit and the drive rod being connected to the torsion tube, the output rod being connected to the torsion bar and also being connected directly or indirectly via a coupler to the wheel guiding element, or respectively the drive rod being connected to the torsion bar and the output rod being connected to the torsion tube and also being connected directly or indirectly via a coupler to the wheel guiding element. A disadvantage of this known device is that a very large installation space is required, since the torsion spring system is connected to the wheel guiding element via the swivel arm on the one hand, and the servomotor unit is spaced apart from the torsion spring system via the drive lever on the other hand. In terms of construction, such devices also have a high part diversity due to the rods used and are likewise difficult to install. In view of this, there is still room for improvement in the art demonstrated in the field of spring arrangements for suspending wheel suspension elements relative to a vehicle body. Disclosure of Invention The object of the present invention is to demonstrate an improved spring effect acting on the vehicle body while maintaining a compact design of the spring device. According to the invention, the object is achieved by a spring system having a spring device for suspending a wheel suspension element relative to a vehicle body and means for actuating the spring device, which spring device has the features of claim 1. A spring system is shown with a spring device for suspending a wheel suspension element relative to a vehicle body and with means for actuating the spring device, wherein the spring device has a spring element which extends along a torsion axis and has a plurality of torsion portions arranged one around the other in radial sequence, wherein adjacent torsion portions are separated from each other in each case, but are connected in a rotationally fixed manner in certain regions by connecting portions, wherein the innermost torsion portion and the outermost torsion portion each have an attachment region and one attachment region is connected to the vehicle body and the other attachment region is connected to the wheel suspension element. According to the invention, the controllable actuator is designed to act on different torsion parts of the spring element relative to the vehicle body and to set the characteristics of the spring means. Advantageous configurations are disclosed in the dependent claims. It should be noted that the features and measures listed individually in the f