Damping device for an electric motor for a ventilator
In one embodiment, the present disclosure provides a vibration damping device configured to decouple vibration of an electric motor for a ventilator, comprising: a base plate ( 140 ); a bearing unit ( 150 ) for supporting the electric motor, a plurality of decoupling elements ( 120 ), which are releasably coupled via retaining elements ( 151 ) to the bearing unit ( 150 ) and positionable between the bearing unit ( 150 ) and the base plate ( 140 ): wherein: the base plate ( 140 ) comprises mounting structures ( 141 ) for the decoupling elements ( 120 ) and fixing means ( 110 ) with a head ( 111 ): and each decoupling element ( 120 ) comprises adjacent to a recess at least one clamping section ( 121 ) for the corresponding fixing means ( 110 ) on the base plate ( 140 ); further wherein each of the fixing means ( 110 ) is configured to establish a force-fit and/or form-fit connection with the corresponding mounting structure ( 141 ) and the at least one clamping section ( 121 ) of the decoupling element ( 120 ) is pressed between a portion of the head ( 112 ) and the mounting structure ( 141 ) for a backlash free mounting of the decoupling element ( 120 ) to the base plate ( 140 ) in its mounted state. Due to the backlash-free mounting, the damping element cannot be loosened in the mounted state.
1 . A vibration damping device configured to decouple vibration of an electric motor for a ventilator, comprising:
a base plate;
a bearing unit for supporting the electric motor, and
a plurality of decoupling elements, which are releasably coupled via retaining elements to the bearing unit and positionable between the bearing unit and the base plate;
wherein the base plate comprises mounting structures for the plurality of decoupling elements and fixing means with a head; and
each decoupling element comprises adjacent to a recess at least one clamping section for a corresponding fixing means on the base plate;
wherein each of the fixing means is configured to establish a force-fit and/or form-fit connection with the corresponding mounting structure and the at least one clamping section of the decoupling element is pressed between a portion of the head and the mounting structure for a backlash free mounting of the decoupling element to the base plate in its mounted state,
wherein the recess extends along a fixation axis,
wherein the decoupling elements have a longitudinal axis,
wherein the longitudinal axis of the decoupling elements is arranged at an acute angle relative to the fixation axis.
2 . The vibration damping device of claim 1 , wherein the recess is formed as a through hole configured to receive the fixing means.
3 . The vibration damping device of claim 2 , wherein the through hole, in the mounted state, extends along a fixation axis perpendicularly with regard to the base plate.
4 . The vibration damping device of claim 3 , wherein each mounting structure protrudes from the base plate and is configured to have at least partially a non-circular cross-section such that the rotation of the corresponding decoupling element around the fixation axis is limited or prevented in the mounted state.
5 . The vibration damping device of claim 4 , wherein each mounting structure has a polygonal cross-section configured to inter-engage or mate with a corresponding inner cross-section of the through hole adjacent to the base plate.
6 . The vibration damping device of claim 5 , wherein each mounting structure has a cross section with a stepped form, wherein at least a basic step is connected to the base plate and has a polygonal cross-section.
7 . The vibration damping device of claim 6 , wherein each of the plurality of decoupling elements comprises an elastic material.
8 . The vibration damping device of claim 7 , wherein each of the plurality of decoupling elements are tubular and have at least partially a connecting web.
9 . The vibration damping device of claim 3 , wherein each of the decoupling elements comprises a resilient material to permit a press fit or crimping of the at least one clamping section between the head and the mounting structure.
10 . The vibration damping device of claim 9 , wherein the fixing means comprises a pin, a bolt, a rivet or a screw configured to be positioned within the recess or through hole.
11 . The vibration damping device of claim 10 , wherein the decoupling elements have a longitudinal axis, and the longitudinal axis of each decoupling element is directed to a central axis of the base plate such that the central axis of the base plate and the longitudinal axis intersect.
12 . The vibration damping device of claim 1 , wherein each of the decoupling elements comprises a resilient material to permit a press fit or crimping of the at least one clamping section between the head and the mounting structure.
13 . The vibration damping device of claim 1 , wherein the fixing means comprises a pin, a bolt, a rivet or a screw configured to be positioned within the recess or through hole.
14 . The vibration damping device of claim 1 , wherein the decoupling elements have a longitudinal axis, and the longitudinal axis of each decoupling element is directed to a central axis of the base plate such that the central axis of the base plate and the longitudinal axis intersect.
15 . The vibration damping device of claim 14 , wherein the longitudinal axis of each decoupling element is angled relative to the central axis of the base plate at an angle between 30 and 70 degrees.
16 . The vibration damping device of claim 1 , wherein each of the plurality of decoupling elements comprises an elastic material.
17 . The vibration damping device of claim 1 , wherein each of the plurality of decoupling elements are tubular and have at least partially a connecting web.
18 . The vibration damping device of claim 1 , wherein at least three mounting structures and corresponding retaining elements are evenly distributed around a central axis of the base plate such that angles formed between adjacent mounted decoupling elements are substantially the same.
19 . The vibration damping device of claim 1 , wherein each retaining element comprises a slot configured to inter-engage or mate with a corresponding groove on the decoupling element.
20 . A method for mounting an electric motor on a base plate to decouple vibration, comprising:
providing a base plate comprising a plurality of mounting structures and fixing means with a head;
releasably coupling a bearing unit to a plurality of decoupling elements via corresponding retaining elements;
positioning the decoupling elements such that a corresponding mounting structure is protruding into a recess or through hole of the corresponding decoupling element, wherein each decoupling element comprises adjacent to a recess at least one clamping section,
wherein the recess extends along a fixation axis,
wherein the decoupling elements have a longitudinal axis,
wherein the longitudinal axis of the decoupling elements is arranged at an acute angle relative to the fixation axis; and
inserting fixing means into the mounting structure and fixing each decoupling element on the base plate with the fixing means, wherein each fixing means establishes a force-fit and/or form-fit connection with the corresponding mounting structure while the at least one clamping section of the decoupling element is fixed between at least a portion of the head and the mounting structure for a backlash free mounting of the decoupling element to the base plate in its mounted state.