Roller carriage for the reception of a sliding door

1. A roller carriage for a sliding door comprising:

a roller module structured for affixing on a roller running path, and

an attachment body structured for connecting the roller carriage to the sliding door,

wherein the roller module is made of a first material and the attachment body is made of a second material,

wherein the first material conducts structure-borne sound in a first sound conducting range and dampens the structure-borne sound in a second sound conducting range, and the second material dampens the structure-borne sound in the first sound conducting range and conducts the structure-borne sound in the second sound conducting range,

wherein the roller carriage includes a U-shaped clamp disposed on a lower end of the roller module and configured for attachment to the roller running path, and further includes a protection device disposed on top of the roller module configured to secure the roller carriage from lifting off the roller running path, and

wherein, when seen from a side, the protection device is located above the roller running path.

2. The roller carriage according to claim 1 , wherein the roller module includes a transferring portion and the attachment body includes a counter-transferring portion, wherein the transferring portion contacts the counter-transferring portion in full contact.

3. The roller carriage according to claim 1 , wherein the attachment body or the roller module are monolithic.

4. The roller carriage according to claim 1 , wherein the first material of the roller module includes at least one of the following material parameters:

density between 7 kg/dm 3 and 9 kg/dm 3 ,

shear modulus between 70 kN/mm 2 and 90 kN/mm 2 , and

E-modulus between 180 kN/mm 2 and 240 kN/mm 2 .

5. The roller carriage according to claim 1 , wherein the second material of the attachment body includes at least one of the following material parameters:

density between 6 kg/dm 3 and 8 kg/dm 3 ,

shear modulus between 30 kN/mm 2 and 50 kN/mm 2 , and

E-modulus between 70 kN/mm 2 and 100 kN/mm 2 .

6. The roller carriage according to claim 1 , wherein the attachment body includes a clamp having at least one of the following material parameters:

density between 7 kg/dm 3 and 9 kg/dm 3 ,

shear modulus between 70 kN/mm 2 and 90 kN/mm 2 , and

E-modulus between 180 kN/mm 2 and 240 kN/mm 2 .

7. The roller carriage according to claim 1 , wherein the roller module is connected to the attachment body directly, indirectly, or by friction connection.

8. The roller carriage according to claim 1 , wherein the roller module includes a bearing device having at least one rotatable roller.

9. The roller carriage according to claim 8 , wherein the at least one roller is configured from plastic material, having one of the following material parameters:

density between 1 kg/dm 3 and 2 kg/dm 3 ,

shear modulus between 2 kN/mm 2 and 6 kN/mm 2 , and

E-modulus between 2 kN/mm 2 and 3 kN/mm 2 .

10. The roller carriage according to claim 9 , wherein the E-modulus of the first material to the E-modulus of the second material is between 1.5:1 and 2.5:1, or the shear modulus of the first material to the shear modulus of the second material between 2.5:1 and 3.5:1.

11. The roller carriage according to claim 1 , wherein each material has a sound specific density, which results from a material density multiplied by the quotient of the E-modulus divided by the shear modulus of the respective material, wherein the sound specific density of the first material to the sound specific density of the second material is configured to be in the range between 1:0.5 and 1:1.7.

12. A sliding door installation, including a roller running path and at least one roller carriage supported to be displaceable in a roller on the roller running path, wherein the at least one roller carriage includes a roller module for affixing on the roller running path, and an attachment body for connecting the at least one roller carriage to at least one sliding door, wherein the roller module is made of a first material and the attachment body is made of a second material, wherein the first material conducts structure-borne sound in a first sound conducting range and dampens the structure-borne sound in a second sound conducting range, and the second material dampens the structure-borne sound in the first sound conducting range and conducts the structure-borne sound in the second sound conducting range.

13. The sliding door installation according to claim 12 , wherein the at least one sliding door is supported to be displaceable in the roller running path with at least two roller carriages.