This application claims priority to German patent application no. 10 2016 221 286.9 filed on Oct. 28, 2016, the contents of which are fully incorporated herein by reference.
The disclosure is directed to a lifting column having at least first and second telescoping elements.
A lifting column including two columns is known.
An aspect of the disclosure is in particular to provide a lifting column of the above-mentioned type with a long service life. This aspect is achieved according to the disclosure.
The disclosure relates to a lifting column including a first column element and at least one second column element that are movable relative to each other.
It is disclosed that the lifting column includes at least one damping unit that is deformable by a force that acts on a top side of the lifting column in at least one operating state. As a result, a long operating life can be achieved. In particular vibrations and shock loads, which may cause a failure of the drive of the lifting column and thus limit the service life of the lifting column, are effectively damped, such that a failure of the drive does not occur.
Preferably in at least one operating state the damping unit transmits the force at least partially to a drive of the lifting column.
The lifting column advantageously includes at least one chain and/or at least one belt, and the chain and/or the belt at least partially transmits the force to the damping unit.
It is further disclosed that the lifting column includes at least one carrier element, which at least partially forms the upper side, and at least one essentially rod-shaped component that at least partially transmits the force to a drive of the lifting column, wherein the damping unit is disposed at least partially between the carrier element and the component.
The damping unit preferably includes at least one part that rests relative to a motor of the lifting column with each operation.
In addition it is disclosed that the damping unit includes at least one elastomer and/or rubber and/or at least one oil damper and/or at least one coil spring and/or at least one plate spring and/or at least one gas spring.
At least a part of the damping unit is preferably sleeve-shaped.
The lifting column advantageously includes at least one third column element, and the three column elements are movable relative to one another.
Further advantages arise from the following description of the drawings. Exemplary embodiments of the disclosure are depicted in the drawings. The drawings, the description, and the claims contain numerous features in combination. The person skilled in the art will also advantageously consider the features individually and in further meaningful combinations.
The motor is part of the drive 18. It is alternatively conceivable that the motor is not disposed inside the lifting column but rather is connectable to the drive of the threaded spindle 34 by an interface.
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Alternatively or additionally the lifting column can include a damping unit 42a, which is disposed between the rod 46a and the carrier element 22a.
In alternative exemplary embodiments each of the damping units that are mentioned in the above exemplary embodiment are present individually and without the other two damping units. In further alternative exemplary embodiments each of these damping units can be present with a further of the three mentioned damping units 14a, 40a, 42a or all three damping units can also be installed simultaneously.
Representative, non-limiting examples of the present invention were described above in detail with reference to the attached drawings. This detailed description is merely intended to teach a person of skill in the art further details for practicing preferred aspects of the present teachings and is not intended to limit the scope of the invention. Furthermore, each of the additional features and teachings disclosed above may be utilized separately or in conjunction with other features and teachings to provide improved lifting columns.
Moreover, combinations of features and steps disclosed in the above detailed description may not be necessary to practice the invention in the broadest sense, and are instead taught merely to particularly describe representative examples of the invention. Furthermore, various features of the above-described representative examples, as well as the various independent and dependent claims below, may be combined in ways that are not specifically and explicitly enumerated in order to provide additional useful embodiments of the present teachings.
All features disclosed in the description and/or the claims are intended to be disclosed separately and independently from each other for the purpose of original written disclosure, as well as for the purpose of restricting the claimed subject matter, independent of the compositions of the features in the embodiments and/or the claims. In addition, all value ranges or indications of groups of entities are intended to disclose every possible intermediate value or intermediate entity for the purpose of original written disclosure, as well as for the purpose of restricting the claimed subject matter.
Number | Date | Country | Kind |
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10 2016 221 286 | Oct 2016 | DE | national |
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Number | Date | Country | |
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20180118545 A1 | May 2018 | US |