Connecting Arrangement Between Joint Partners in the Chassis Region of a Vehicle That Can Be Braced Separably Against One Another

Abstract

A connecting arrangement is provided between joining partners which are braced separably against each other in the chassis region of a vehicle, wherein the joining partners are braced against each other via their contact surfaces by at least one releasable fastening element. Hard particles are applied to the contact surface at least of one of the joining partners before the production of the connecting arrangement and therefore before the bracing mounting of the joining partners and of the fastening element. The hard particles at least partially project into the respectively other contact surface as a result of the bracing mounting. The hard particles are applied so as to be at least approximately abrasion-proof, for example by a blasting process.

Claims

1. A connecting arrangement between joining partners in a chassis region of a vehicle, the joining partners being bracable separably against one another, the connecting arrangement comprising: a first joining partner having a contact surface; a second joining partner having a contact surface; hard particles applied to the contact surface of at least of one of the first and second joining partners; at least one releasable fastening element by which the first and second joining partners are braced against each other via the respective contact surfaces, wherein the hard particles at least partially project into the other contact surface of the other one of the first and second joining partners via the bracing against one another by the releasable fastening element.

2. The connecting arrangement as claimed in claim 1, wherein the hard particles have been applied to at least one of the contact surfaces so as to be at least approximately abrasion-proof.

3. The connecting arrangement as claimed in claim 1, wherein the hard particles are particles with a size of 1-70 μm, a surface area of which has a multiplicity of corners and edges.

4. The connecting arrangement as claimed in claim 3, wherein the hard particles are composed of: a steel material, corundum, silicon carbide, or NiSiC in a form of a nickel-diamond coating.

5. The connecting arrangement as claimed in claim 1, wherein the hard particles are composed of: a steel material, corundum, silicon carbide, or NiSiC in a form of a nickel-diamond coating.

6. The connecting arrangement as claimed in claim 1, wherein when both the first and second joining partners are composed of a relatively hard material, the hard particles have a size within a range of 10-30 μm and are distributed with a surface portion of an order of magnitude of 10% over the contact surface.

7. The connecting arrangement as claimed in claim 1, wherein when both the first and second joining partners are composed of a relatively soft material, the hard particles have a size within a range of 30-70 μm and are distributed with a surface portion of an order of magnitude of 20% over the contact surface.

8. The connecting arrangement as claimed in claim 1, wherein when one of the first and second joining partners is composed of a harder material and the other of the first and second joining partners is composed of a softer material, the hard particles have an average grain size of an order of magnitude of 20-40 μm covering approximately 15% of the common contact surface.

9. The connecting arrangement as claimed in claim 1, wherein at least one of the contact surfaces has a coating.

10. The connecting arrangement as claimed in claim 9, wherein the coating is a CDC coating.

11. The connecting arrangement as claimed in claim 9, wherein a thickness of the coating is smaller than a height of the hard particles protruding from the surface area of that contact surface to which the hard particles have been applied.

12. The connecting arrangement as claimed in claim 1, wherein the connecting arrangement is a clamping fit connection in which one of the first and second joining partners is a slotted hollow cylinder configured to engage around a portion of the other one of the first and second joining partners which is adapted thereto.

13. The connecting arrangement as claimed in claim 1, wherein the hard particles have been applied in a manner distributed over an entire contact surface.

14. The connecting arrangement as claimed in claim 1, wherein a plurality of releasable fastening elements are provided, the releasable fastening elements being screws which penetrate the contact surfaces of the first and second joining partners and clamp the contact surfaces against one another, and the hard particles are located with respect to the at least one of the contact surfaces either (1) only in relatively close surroundings of the screws, or (2) excluding the relatively close surroundings of the screws.

15. The connecting arrangement as claimed in claim 1, wherein the first and second joining partners are at least one of the following pairings: (1) wheel bearing on a wheel carrier; (2) wheel on the wheel bearing or on a brake disk chamber; (3) brake caliper or parts of a vehicle brake system on the wheel carrier (4) wheel-guiding link or vibration damper on the wheel carrier; (5) joint pin and/or joint pin nut of a ball and socket joint on the wheel carrier; (6) flat structural part in a form of a shear area on an axle support; (7) gearing or steering mechanism on an axle support; (8) bearing clips for mounting a stabilizer on an axle support; and (9) rubber bearing for mounting a first structural element on a second structural element.

16. A method of producing a connecting arrangement between first and second joining partners in a chassis region of a vehicle, the method comprising the acts of: applying hard particles to a contact surface of at least one of the first and second joining partners before producing the connecting arrangement; and bracing the first and second joining partners against each other via their contact surfaces by way of at least one releasable fastening element, wherein said hard particles at least partially project into the contact surface of the other of the first and second joining partners as a result of the bracing.

17. The method as claimed in claim 16, wherein the hard particles are applied to the at least one contact surface via a blasting process such that portions of the hard particles penetrate the respective joining partner and portions project out of the contact surface of the respective joining partner.

18. The method as claimed in claim 17, wherein the blasting process is one of: a pressure blasting process, an injector blasting process, or a plasma blasting process.

19. The method as claimed in claim 16, wherein the hard particles are applied to the at least one contact surface such that the hard particles penetrate, at least approximately by half with respect to their overall dimension, into the first joining partner and project, at least approximately by half with respect to their overall dimension, out of the contact surface of the first joining partner.

20. The method as claimed in claim 16, further comprising the act of: applying a coating on at least one of the contact surfaces of the first and second joining partners.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic diagram of a section in a connecting region between first and second joining partners in order to illustrate, merely in principle, a connecting arrangement according to an embodiment of the invention.

[0030] FIG. 2 is a schematic diagram of a section in a connecting region between first and second joining partners in order to illustrate, merely in principle, a connecting arrangement according to an embodiment of the invention.

[0031] FIG. 3 is a schematic diagram of a section in a connecting region between first and second joining partners in order to illustrate, merely in principle, a connecting arrangement according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

[0032] The FIGS. 1-3 show, merely in principle, greatly enlarged cutouts of a section in the connecting region between a second joining partner 2 and a first joining partner 1 of a connecting arrangement according to the invention, wherein the second joining partner 2 rests with its contact surface 2a on the mating surface or contact surface 1a of the first joining partner 1. Not shown in the figures is a screw connection by means of one or more screws as (a) releasable fastening element(s) via which the second joining partner 2, here in the manner of a flange connection, is braced against the first joining partner 1 and is held thereon. The screw or screws can lie within the contact surfaces 1a, 2a of the joining partners 1, 2 or else outside said contact surfaces 1a, 2a and customarily extend in suitable bores which are provided in the joining partners 1, 2 and the axes of which customarily run perpendicularly to the contact surfaces 1a, 2a in the same manner as the longitudinal axes of the screws. Depending on the individual configuration of the joining partners 1, 2, the joining partners 1, 2 can extend further beyond the actual contact surfaces 1a, 2a, as viewed in the direction of the plane of the contact surfaces 1a, 2a, but always rest on each other only by means of the contact surfaces 1a, 1b in the region thereof. The contact surfaces 1a, 2a in no way have to be level or flat here.

[0033] Before the production of the abovementioned screw connecting arrangement and therefore before the mounting of the second joining partner 2 on the first joining partner 1 or before the bracing of the joining partners 1, 2 against each other, hard particles 3 have been applied to the contact surface 1a of the first joining partner 1. The hard particles at least partially project into the mating surface or contact surface 2a of the second joining partner 2 by the bracing mounting, as all of the figures show.

[0034] In all of the figures, the hard particles 3 are also held on the contact surface 1a via a nickel adhesion promoter layer 4—because of said thin nickel adhesion promoter layer 4, a microgap illustrated significantly enlarged here is provided between the two components 1, 2. In reality, the microgap is virtually nonexistent or it can be reduced to almost zero. In particular, such an adhesion promoter layer does not have to be present; rather, it is an optional feature here.

[0035] According to FIG. 1, none of the joining partners 1, 2 has a further coating, while, according to FIGS. 2, 3, each joining partner 1, 2 is provided with a further coating 15 or 25 which can be, for example, a CDC coating. Both in FIG. 2 and in FIG. 3, the hard particles 3 with their (optional) adhesion promoter layer 4 have been applied to the joining partners 1, which are already provided with the coating 15. The difference between FIG. 2 and FIG. 3 consists in that, in FIG. 2, because of the bracing of the joining partners 1, 2 against each other, the hard particles 3 of the joining partner 1 penetrate through the coating 25 of the joining partner 2 while, in FIG. 3, the hard particles penetrate only into the coating 25 of the joining partner 2 without penetrating into the actual surface area thereof, i.e. the surface area without a coating 25. However, the effect according to the invention arises to a greater or lesser extent in all of the embodiments, in particular also in those which have only been described in words before the description of the figures.

[0036] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.