Connecting arrangement between joint partners in the chassis region of a vehicle that can be braced separably against one another

Patent metadata

Field	Value
Publication number	US-11002307-B2
Application number	US-201715679358-A
Country	US
Kind code	B2
Filing date	Aug 17, 2017
Priority date	Feb 18, 2015
Publication date	May 11, 2021
Grant date	May 11, 2021

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.

First claim

What is claimed is:

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,
at least one of the contact surfaces has a coating, and
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.

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 Ni—SiC 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 Ni—SiC 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 the coating is a CDC coating.

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

11. 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.

12. 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.

13. 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, and
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.

14. 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, 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.

15. The method as claimed in claim 14 , wherein the blasting process is one of: a pressure blasting process, an injector blasting process, or a plasma blasting process.

16. The method as claimed in claim 14 , further comprising the act of:
applying a coating on at least one of the contact surfaces of the first and second joining partners.

17. 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, 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.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Bui Hoang Viet

Classifications

• C23C4/10 Primary

  Oxides, borides, carbides, nitrides or silicides; Mixtures thereof · CPC title

• C23C24/04

  Impact or kinetic deposition of particles · CPC title

• C23C4/134

  Plasma spraying · CPC title

• B60B35/007

  for mounting suspension elements to axles · CPC title

• B62D24/04

  Vehicle body mounted on resilient suspension for movement relative to the vehicle frame · CPC title