SEGMENTED HEAT SHIELD WITH REDUCED INTERLAYER THERMAL CONDUCTION

• US 20200130818A1
• Filed: 10/29/2018
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Grant

• Current Assignee: Goodrich Corporation (Rtx Corporation)
• Original Assignee: Goodrich Corporation (Rtx Corporation)
• Inventors: Leiva, Orly
• Granted Patent: US 11,572,159 B2
• Time in Patent Office: Days
• CPC Class Codes: B60B 27/0052 the element being a brake disc
• CPC Class Codes: B60B 2900/212 Damage
• CPC Class Codes: B60Y 2200/51 Aeroplanes
• CPC Class Codes: B60Y 2410/114 Shields, e.g. for heat protection
• CPC Class Codes: B64C 25/36 Arrangements or adaptations of wheels, tyres or axles in general
• CPC Class Codes: B64C 25/42 Arrangement or adaptation of brakes
• CPC Class Codes: F16D 2055/0037 Protective covers
• CPC Class Codes: F16D 2055/0058 Fully lined, i.e. braking surface extending over the entire disc circumference
• CPC Class Codes: F16D 2065/1356 interlocking
• CPC Class Codes: F16D 2065/785 Heat insulation or reflection
• CPC Class Codes: F16D 55/36 Brakes with a plurality of rotating discs all lying side by side

Abstract

A heat shield assembly is disclosed. In various embodiments, the heat shield assembly defines a first circumferential side and a second circumferential side and an inboard end and an outboard end and includes a first layer defining a first surface of the heat shield assembly and having a first tab member disposed proximate the inboard end at the first circumferential side and a second tab member disposed proximate the outboard end at the first circumferential side; and a second layer defining a second surface of the heat shield assembly and having one or more first crimped portions extending along the first circumferential side and configured to engage the first tab member and the second tab member.

Claims

1. A heat shield assembly defining a first circumferential side and a second circumferential side and an inboard end and an outboard end, comprising:

a first layer defining a first surface of the heat shield assembly and having a first tab member disposed proximate the inboard end at the first circumferential side and a second tab member disposed proximate the outboard end at the first circumferential side; and

a second layer defining a second surface of the heat shield assembly and having one or more first crimped portions extending along the first circumferential side and configured to engage the first tab member and the second tab member.

2. The heat shield assembly of claim 1, further comprising an intermediate layer disposed between the first layer and the second layer.

3. The heat shield assembly of claim 2, wherein the intermediate layer comprises a first plurality of dimples oriented toward the first layer.

4. The heat shield assembly of claim 3, wherein the intermediate layer comprises a second plurality of dimples oriented toward the second layer.

5. The heat shield assembly of claim 4, wherein the first plurality of dimples is configured to contact the first layer and the second plurality of dimples is configured to contact the second layer.

6. The heat shield assembly of claim 1, wherein the first layer includes a third tab member disposed proximate the inboard end at the second circumferential side and a fourth tab member disposed proximate the outboard end at the second circumferential side and the second layer includes one or more second crimped portions extending along the second circumferential side and configured to engage the third tab member and the fourth tab member.

7. The heat shield assembly of claim 6, wherein the first layer is an inner layer defining a radially inner surface of the heat shield assembly and the second layer is an outer layer defining a radially outer surface of the heat shield assembly.

8. The heat shield assembly of claim 6, wherein the first layer is an outer layer defining a radially outer surface of the heat shield assembly and the second layer is an inner layer defining a radially inner surface of the heat shield assembly.

9. The heat shield assembly of claim 6, wherein the inboard end includes an aperture configured to receive a fastener extending between a torque bar and a wheel.

10. The heat shield assembly of claim 9, wherein the inboard end includes a chin ring extending between the first circumferential side and the second circumferential side.

11. An assembly, comprising:

a wheel having a wheel well and configured to rotate about an axis;

a brake mechanism disposed radially inward of the wheel well; and

a heat shield disposed radially inward of the wheel well and radially outward of the brake mechanism, the heat shield defining a first circumferential side and a second circumferential side and an inboard end and an outboard end and comprising;

a first layer having a first tab member disposed proximate the inboard end at the first circumferential side and a second tab member disposed proximate the outboard end at the first circumferential side; and

a second layer having one or more first crimped portions extending along the first circumferential side and configured to engage the first tab member and the second tab member.

12. The assembly of claim 11, further comprising an intermediate layer disposed between the first layer and the second layer.

13. The assembly of claim 12, wherein the intermediate layer comprises a first plurality of dimples oriented toward the first layer and a second plurality of dimples oriented toward the second layer.

14. The assembly of claim 13, wherein the first plurality of dimples is configured to contact the first layer and the second plurality of dimples is configured to contact the second layer.

15. The assembly of claim 11, wherein the first layer includes a third tab member disposed proximate the inboard end at the second circumferential side and a fourth tab member disposed proximate the outboard end at the second circumferential side and the second layer includes one or more second crimped portions extending along the second circumferential side and configured to engage the third tab member and the fourth tab member.

16. The assembly of claim 13, wherein the first layer is an inner layer defining a radially inner surface of the heat shield assembly and the second layer is an outer layer defining a radially outer surface of the heat shield.

17. The assembly of claim 16, wherein the inboard end includes an aperture configured to receive a fastener extending between a torque bar and the wheel.

18. A method of manufacturing a heat shield segment, comprising:

forming a first surface from a first layer of material and a second surface from a second layer of material;

forming one or more tab members along a first edge of the first layer of material;

forming one or more crimped-portions along a second edge of the second layer of material; and

joining the first layer of material and the second layer of material, at the one or more tab members and at the one or more crimped-portions, to form the heat shield segment.

19. The method of claim 18, further comprising positioning a dimpled structure intermediate the first layer of material and the second layer of material.

20. The method of claim 19, wherein the dimpled structure includes a first plurality of dimples configured to contact the first layer of material and a second plurality of dimples configured to contact the second layer of material.