BEARING DEVICE FOR A LEAF SPRING ASSEMBLY OF A WHEEL SUSPENSION

• US 20190329619A1
• Filed: 01/09/2017
• Published: 10/31/2019
• Est. Priority Date: 02/10/2016
• Status: Abandoned Application

• Current Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: RUPFLIN, Thomas, HOFMANN, Peter
• Application Number:
  US16/074,156
• Publication Number:
  US 20190329619A1
• Time in Patent Office: Days
• CPC Class Codes: B60G 11/08 arranged substantially transverse to the longitudinal axis of the vehicle
• CPC Class Codes: B60G 11/10 characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
• CPC Class Codes: B60G 11/12 Links, pins, or bushes
• CPC Class Codes: B60G 21/052 Mounting means therefor
• CPC Class Codes: B60G 2200/21 Trailing arms connected by a torsional beam, i.e. twist-beam axles
• CPC Class Codes: B60G 2202/11 Leaf spring
• CPC Class Codes: B60G 2202/114 transversally arranged
• CPC Class Codes: B60G 2204/121 Mounting of leaf springs
• CPC Class Codes: B60G 2206/428 Leaf springs
• CPC Class Codes: B60G 2206/7101 Fiber-reinforced plastics [FRP]

Abstract

A bearing device (7) for a leaf spring assembly (1) of a wheel suspension, having a leaf spring (2) and a connection device, which serves for the installation of the leaf spring (2) at the vehicle body. The connection device has a bolt. The leaf spring (2) is fabricated from a fiber composite material and has a recess that passes through the leaf spring, in a transverse direction, and through which the bolt (10) extends in order to provide the bearing device (7) with a compact construction and a low manufacturing cost and effort.

Claims

1-10. -10. (canceled)

11. A bearing device (7;

8), for a leaf spring assembly (1) of a wheel suspension, comprising;

a leaf spring (2),

a connection assembly (9) serving to connect the leaf spring (2) to a vehicle body,

the connection assembly (9) having a bolt (10),

the leaf spring (2) being fabricated from a fiber composite material and being penetrated transversely by a recess (11) through which the bolt (10) passes.

12. The bearing device (7;

8) according to claim 11, wherein the bolt (10) accommodates clamping devices (13, 14;

25, 26) located on both sides of the leaf spring (2), and the clamping devices (13, 14;

25, 26) are pre-loaded by the bolt (10) toward one another and thus against the leaf spring (2) which is positioned in between.

13. The bearing device (7;

8) according to claim 12, wherein each of the clamping devices (13, 14;

25, 26) comprises a clamping sleeve (15, 16, 27, 28, 31).

14. The bearing device (7;

8) according to claim 13, wherein the clamping sleeves (27, 28) are each equipped, at the sides of the leaf spring (2), with at least one of a conical and a cylindrical enlargement (29, 30) through which the respective clamping sleeve (27, 28) is pre-loaded against the leaf spring (2).

15. The bearing device (7;

8) according to claim 13, wherein a contact element (17;

18) is provided, between the leaf spring (2) and the respective clamping sleeve (15;

16) of the respective clamping device (13;

14), each of which is loaded through the respective clamping sleeve (15;

16) against the leaf spring (2).

16. The bearing device (7;

8) according to claim 15, wherein the contact elements (17;

18) has clamp-like projections (21;

22), through which the contact elements encompass the leave spring (2) from sides of the respective clamping device (13;

14).

17. The bearing device (7;

8) according to claim 11, wherein the connection assembly (9) comprises rubber bearings (32) through which an installation at the vehicle body is accomplished.

18. The bearing device (7;

8) according to claim 13, wherein rubber bearings (32) are placed on the respective clamping sleeves (31).

19. The bearing device (7;

8) according to claim 12, wherein the pre-load of the clamping devices (13, 14;

25, 26) is achieved by a screw fastening.

20. A leaf spring assembly (1) for a wheel suspension of a vehicle, comprising:

a leaf spring (2) being connected with part of a vehicle body by a bearing device (7, 8) having a connection assemblies (9) serving to connect the leaf spring (2) to the vehicle body,

the connection assemblies (9) each having a bolt (10),

the leaf spring (2) being fabricated from a fiber composite material and being penetrated transversely by recesses (11) through which the bolts (10) pass.

21. A leaf spring assembly of a wheel suspension comprising:

a leaf spring,

first and second bearing devices,

each of the first and the second bearing devices having a connection assembly which connects the leaf spring to a vehicle body,

each of the connection assemblies having a respective bolt,

the leaf spring being fabricated from a fiber composite material and has first and second transverse recesses extending through the leaf spring, and

the respective bolt of the first bearing device passing through the first recess and the respective bolt of the second bearing device passing through the second recess.

22. The leaf spring assembly according to claim 21, wherein each of the first and the second bearing devices comprises clamping devices which are supported by the respective bolts on opposite transverse sides of the leaf spring, and the clamping devices on the respective bolts being pre-loaded against each other thereby clamping the leaf spring therebetween.