Drive unit for a sliding assembly, in particular a sliding door

Patent metadata

Field	Value
Publication number	US-12366102-B2
Application number	US-202017781538-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Dec 4, 2019
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A drive unit for a sliding arrangement, in particular a sliding door, includes a carriage, which is formed for linearly mobile mounting in relation to a sub-structure of the sliding arrangement, a deflection roller rotatable around a roller axis at the carriage for deflecting a drive belt of the sliding arrangement, and a tensioning device, comprising having a shaft with male thread rotatable around a shaft axis, a first shaft reception with female thread for receiving the male thread of the shaft, a second shaft reception for linear mobile reception of the shaft, and a compression spring between the second shaft reception and a spring abutment at the shaft. The shaft is disposed for tensioning the drive belt by increasing the distance between the first shaft reception and the second shaft reception.

First claim

The invention claimed is:

1. A drive unit for a sliding door comprising:
a carriage, which is formed for linearly mounting in relation to a sub-structure of the sliding door,
a deflection roller rotatable around a roller axis, at the carriage for deflecting a drive belt of the sliding door,
and a tensioning device, comprising:
a shaft with male thread rotatable around a shaft axis,
a first shaft reception with female thread for receiving the male thread of the shaft,
a second shaft reception for linearly receiving the shaft, the shaft extending through the second shaft reception wherein the second shaft reception is configured to hold the shaft,
and a compression spring between the second shaft reception and a spring abutment at the shaft,
wherein the shaft is disposed for tensioning the drive belt by increasing the distance between the first shaft reception and the second shaft reception,

further comprising a carrier for stationarily mounting to the sub-structure, wherein the carriage is linearly supported at the carrier, and wherein one of the two shaft receptions is stationarily disposed at the carrier, comprising at least one affixing element for immobile affixing the carriage to the carrier, wherein the first shaft reception is fixed to a carrier bottom and the second shaft reception is fixed to the carriage; and
a display device for displaying the tension of the drive belt with a first display element on the shaft and a second display element, which is disposed stationarily with regard to the second shaft reception, wherein the second display element comprises a frame with a window, through which the first display element is capable of being seen through the window.

2. The drive unit according to claim 1 ,
wherein one of the two shaft receptions is formed for stationary mounting in relation to the sub-structure,
and wherein the other one of the two shaft receptions is disposed at the carriage.

3. The drive unit according to claim 1 , wherein the compression spring is formed as a spiral spring, on which the shaft is fitted.

4. The drive unit according to claim 1 , wherein the shaft axis intersects the roller axis.

5. The drive unit according to claim 1 , wherein the deflection roller is delimited by two opposing front faces and the shaft axis extends between the two front faces.

6. The drive unit according to claim 1 , wherein the carrier includes a recess, through which the display device is visible.

7. A sliding arrangement comprising the drive unit according to claim 1 , the sub-structure, a counter-roller and the drive belt, wherein the drive belt extends circulating around the deflection roller and the counter-roller.

8. The sliding arrangement according to claim 7 , wherein the shaft is disposed between the drive belt.

9. The sliding arrangement according to claim 7 , wherein the sub-structure includes a back wall with at least one attaching element for attaching the sliding arrangement to a carrying structure, wherein the deflection roller is disposed between the back wall and the carrier bottom, and wherein the roller axis is aligned perpendicular to the back wall.

10. The sliding arrangement according to claim 9 , wherein the shaft is disposed between an area of the frame with the window and the back wall, and/or wherein the shaft is disposed between an area of the carrier bottom with a recess and the back wall; wherein the area of the frame with the window and/or the area of the carrier bottom with the recess is/are formed parallel to the back wall.

11. The sliding arrangement according to claim 9 , wherein the carrier bottom comprises a first side and a second side opposite the first side, wherein the first side is facing the back wall and the second side is facing away from the back wall, wherein an engagement for actuating the affixing element is disposed at the second side and/or the affixing element is oriented to the back wall.

12. A drive unit for a sliding door comprising:
a carriage, which is formed for linearly mounting in relation to a sub-structure of the sliding door,
a deflection roller rotatable around a roller axis, at the carriage for deflecting a drive belt of the sliding door,
and a tensioning device, comprising:
a shaft with male thread rotatable around a shaft axis,
first shaft reception with female thread for receiving the male thread of the shaft,
second shaft reception for linearly receiving the shaft, the shaft extending through the second shaft reception wherein the second shaft reception is configured to hold the shaft,
and a compression spring between the second shaft reception and a spring abutment at the shaft,
wherein the shaft is disposed for tensioning the drive belt by increasing the distance between the first shaft reception and the second shaft reception,

and further comprising a carrier for stationarily mounting to the sub-structure, wherein the carriage is linearly supported at the carrier, and wherein one of the two shaft receptions is stationarily disposed at the carrier, comprising at least one affixing element for immobile affixing the carriage to the carrier,
and further comprising a display device for displaying the tension of the drive belt with a first display element on the shaft and a second display element, which is disposed stationarily with regard to the second shaft reception, wherein the second display element comprises a frame with a window, through which the first display element is visible at a certain setting of the tension.

Assignees

• Dormakaba Deutschland Gmbh

Inventors

• Finke Andreas
• Richstein Axel

Classifications

• E05Y2201/499

  Spring tensioners; Tension sensors · CPC title

• E05Y2201/672

  Tensioners, tension sensors · CPC title

• E05Y2201/668

  Pulleys; Wheels · CPC title

• E05Y2201/652

  Belts · CPC title

• E05Y2201/474

  Compression springs · CPC title