Sound insulating glazing device, in particular for aircraft and soundproofing method for glazing

1. A sound insulating glazing device, comprising:

a glazing;

a sealing joint having a shape and size corresponding to an outer edge of the glazing and adapted for assembly on the outer edge; and

a sound insulator made of at least two materials, a first resilient material and a second dense material, a resilience of the second material being less than a resilience of the first material, the sound insulator being disposed outward of the glazing against the outer edge of the glazing, between at least a part of the outer edge of the glazing and the sealing joint;

wherein the first material and second material are organized in side by side layers, the layer of first material being disposed against the outer edge of the glazing and the layer of second material being disposed on an outer side of the layer of first material, against the sealing joint, to form a discrete unit, with a plurality of the discrete units arranged discontinuously along the periphery on the outer edge of the glazing.

2. A sound insulating glazing device according to claim 1 , wherein the second material is metallic.

3. A sound insulating glazing device according to claim 1 , wherein the glazing is a multi-layer glazing with an external glazing layer designed to be positioned on an exterior side of an aircraft, and an internal glazing layer, each glazing layer having mounted thereon a sound insulator and the sound insulator of each glazing layer having distinct mechanical behavior characteristics depending on temperature, the sound insulator of the external glazing layer having mechanical properties adapted to lower temperatures than the sound insulator of the internal glazing layer.

4. A sound insulating glazing device according to claim 1 , wherein at least the first material differs depending on a zone of the glazing.

5. A sound insulating glazing device according to claim 1 , wherein the first material forms a matrix housing multiple inclusions of the second material, the matrix being housed in a closed envelope.

6. A sound insulating glazing device according to claim 5 , wherein the first material is chosen from a list consisting of gels, polymers and rubber blends.

7. A sound insulating glazing device according to claim 5 , wherein the first material is granular.

8. A sound insulating glazing device according to claim 7 , wherein the first material is chosen from a list consisting of silicate gels and polystyrene.

9. An aircraft equipped with at least one sound insulating glazing device according to claim 1 .

10. An aircraft according to claim 9 , wherein the sound insulating glazing device is used in a cockpit window.

11. A sound insulating glazing device, comprising:

a glazing;

a sealing joint having a shape and size corresponding to an outer edge of the glazing for assembly on the outer edge; and

a sound insulator made of a first resilient material and a second dense material, the sound insulator being disposed outward of the glazing against the outer edge of the glazing, between at least a part of the outer edge of the glazing and the sealing joint, the first material and second material coupled together side by side in layers to form a discrete unit,

wherein a plurality of discrete units are arranged so as to be spaced apart along a periphery of the glazing.