HEAT SHIELD ASSEMBLY FOR WHEEL

Abstract

A heat shield assembly for a vehicle wheel, comprising a single tubular heat shield panel or a plurality of heat sectional panel sections arranged to be connected to one another to form a tubular heat shield panel, the panel have an inner diameter surface and an outer diameter surface, the outer diameter surface arranged to be positioned, in use, adjacent to and spaced apart from an inner diameter surface of a wheel, and wherein the panel or each panel section is provided with one or more ridges extending in the circumferential direction, and wherein one or more wires is provided in one or more of the ridges.

Claims

1. A heat shield assembly for a vehicle wheel, comprising a single tubular heat shield panel or a plurality of heat sectional panel sections arranged to be connected to one another to form a tubular heat shield panel, the panel have an inner diameter surface and an outer diameter surface, the outer diameter surface arranged to be positioned, in use, adjacent to and spaced apart from an inner diameter surface of a wheel, and wherein the panel or each panel section is provided with one or more ridges extending in the circumferential direction, and wherein one or more wires is provided in one or more of the ridges.

2. The heat shield assembly of claim 1, wherein the panel is formed of a plurality of heat shield panels and further comprising connector means for attaching each panel to an adjacent panel.

3. The heat shield assembly of claim 1, wherein the panel is provided with a plurality of ridges each ridge provided with a wire.

4. The heat shield assembly of claim 1, wherein the one or more wires are secured in the one or more grooves by welding.

5. The heat shield assembly of claim 4, wherein the one or more wires are secured in the one or more grooves by seam welding.

6. The heat shield assembly of claim 1, wherein the wires are made of the same material as the panel. 7 A wheel assembly comprising a wheel rim having an inner diameter surface and an outer diameter surface and the heat shield assembly as claimed in claim 1 mounted radially inward of and spaced from the inner diameter surface.

8. The wheel assembly of claim 7, wherein the heat shield assembly comprises a plurality of panels connected to form a tubular heat shield concentric with the wheel rim.

9. The wheel assembly of claim 7, wherein the wires are mounted to the heat shield on an inner diameter surface of the heat shield opposite on outer diameter surface of the heat shield, wherein the outer diameter surface of the heat shield is adjacent the inner diameter surface of the wheel rim.

10. The wheel assembly of claim 7, further comprising a wheel hub located concentric with a radially inward of the wheel rim and the heat shield, and a brake assembly mounted between the heat shield and the wheel hub. 7

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The assembly according to the disclosure will be described, by way of example only, with reference to the drawings. Variations and modifications are possible within the scope of the claims.

[0010] FIG. 1 shows an example of a heat shield in a wheel.

[0011] FIG. 2 shows a heat shield panel modified according to the disclosure.

DETAILED DESCRIPTION

[0012] FIG. 1 shows a section of a typical wheel assembly comprising a wheel rim or tube well 1 having an outer diameter surface 10, on which a tire (not shown) will usually be mounted, and an inner diameter surface 20 defining an interior cavity in which a brake assembly (not shown) will typically be arranged around a wheel hub 30. The hub 30 would be attached by bearing to an axle (not shown). The hub 30 is connected to the wheel rim 1 via a web 40. Rotor disc drive lugs 50 extend axially across the tube well 1 for engagement with the brake discs.

[0013] To protect the wheel rim 1 from the heat generated during hard braking or from brake disc material ejected during braking, a heat shield is mounted to the inner diameter surface 20 of the wheel. The heat shield may be a single tubular shield or, as shown in this example, may be formed of several heat shield panels 60 provided between the rotor drive lugs 50. The heat shield/panels 60 is in the form of an arcuate thin metal sheet or several thin metal sheets and is attached to the wheel so as to be spaced apart from the wheel inner diameter surface by a small insulation gap (not shown).

[0014] As mentioned above, in the harsh braking conditions experienced by e.g. wheels on an aircraft landing gear, high temperatures are reached and pieces of hot material can break off from the rotor discs. All of this can cause the heat shield panels to deform or deflect and be damaged and/or to contact the wall by being deflected into the insulation gap. This can cause wheel abrasion and require the entire wheel assembly to be replaced.

[0015] FIG. 2 shows a heat shield panel 60 modified according to the disclosure to add stiffness and strength to the panel to reduce deformation or deflection of the panel so as to avoid or mitigate the problems mentioned above.

[0016] The panel 60 has an arcuate shape corresponding to the curve of the inner diameter surface 20 of the wheel. FIG. 2 also shows attachment points 70 where the panel 60 is attached to adjacent panels to extend around the entire inner surface of the wheel. The panels have an outer diameter surface 100 that, in use, faces the inner diameter surface 20 of the wheel rim 1, and an opposite inner diameter surface 200 that faces radially inwards towards the hub 30. The panels 60 are provided with machined grooves or channels on the inner diameter surface 200, extending in the circumferential direction (defined relative to the wheel). To add strength and stiffness to the panels in accordance with the disclosure, wires 80 are fitted into one or more of these grooves. In the example shown, the panel has four grooves, each having a stiffening wire mounted therein. Of course, different numbers of grooves and/or wires may be provided depending on the wheel assembly design and use and the required reinforcement. The spacing between the grooves and wires can also be varied, as can the diameters of the wires.

[0017] The wires 80 can be secured in the grooves by e.g. welding. Seam welding is one particularly advantageous possibility.

[0018] The wires can be made of various materials. For example, they may be made of the same material as the heat shield panels or of a stiffer material.

[0019] The modification provides a stiffer more robust heat shield which is simple to manufacture and is lightweight.