Fastening unit

1. A fastening unit for fastening an object to a profile element,

the profile element comprising:

side walls extending in a longitudinal direction,

a bottom that connects the side walls, and

an upper side that is formed by a pair of opposing flanges, each flange extending inwards with respect to a respective sidewall, the flanges defining between them a longitudinal slot;

the fastening unit comprising:

a washer element, adapted to be placed on the upper side of the profile element,

an oblong anchoring element having a threaded bore, the oblong anchoring element being spaced apart from the washer element, and adapted to be placed inside the profile element, beyond the flanges thereof, and

a support element, interconnecting the washer element and the oblong anchoring element;

wherein the support element comprises a first layer of vibration isolating material arranged on an underside of the washer element and a second layer of vibration isolating material arranged on an upper side of the anchoring element, and

wherein the oblong anchoring element and the second layer of vibration isolating material each have a width that allows them to be aligned with the longitudinal slot of the profiled element, inserted therein, and then turned to receive the flanges of the profile element between the first layer of vibration isolating material and the second layer of vibration isolating material, so as to provide, at least in a fastened state of the fastening unit, a barrier for vibrations between the washer element and the flanges of the profile element and between the oblong anchoring element and the flanges of the profile element.

2. The fastening unit according to claim 1 , wherein the vibration isolating material is an elastomeric material.

3. The fastening unit according to claim 2 , wherein the elastomeric material is a rubber.

4. The fastening unit according to claim 1 , wherein the support element comprises a central body portion connecting the first layer of vibration isolating material and the second layer of vibration isolating material, the central body portion being sized to fit through the longitudinal slot of the profile element.

5. The fastening unit according to claim 1 , wherein the support element comprises a lower portion that includes the second layer of vibration isolating material, said lower portion comprising a receiving pocket in which the oblong anchoring element is received.

6. The fastening unit according to claim 1 , wherein the support element comprises an upper portion that includes the first layer of vibration isolating material, said upper portion comprising an inlay area for the washer element, the inlay area being recessed with respect to a rim of the upper portion.

7. The fastening unit according to claim 1 , wherein the first layer of vibration isolating material and the second layer of vibration isolating material are sized such that in the fastened state they engage at least a part of the flanges of the profile element.

8. The fastening unit according to claim 1 , wherein the first layer of vibration isolating material is sized such that in the fastened state it engages an upper edge of the sidewalls of the profile element.

9. The fastening unit according to claim 1 , wherein the first layer of vibration isolating material, seen in a longitudinal direction thereof, has gripping end portions formed as engagement wings that, in an unloaded state, are inclined with respect to the washer element to engage and grip the upper side and the side walls of the profile element.

10. The fastening unit according to claim 1 , wherein substantially the entire support element is made of said vibration isolating material.

11. The fastening unit according to claim 1 , wherein the support element is made in one piece that is made of said vibration isolating material.

12. The fastening unit according to claim 1 , wherein the support element is an injection-moulded part.