Patent Application
20140231195
The field to which the disclosure generally relates to includes tuned vibration damped devices.
Parts subjected to vibration may produce unwanted or undesirable vibrations or noises.
A number of variations may include a casting including a body portion and a mass damper extending therefrom wherein the body portion and the mass damper are a continuous un-joined single piece of cast metal, and wherein the mass damper is constructed and arranged to prevent or retard vibrations of the body portion.
A number of variations may include a vented brake rotor including a hub and a first annular portion extending from the hub; the annular portion including a first rotor cheek, a second rotor cheek spaced apart from the first rotor cheek and at least one rib extending between the first rotor cheek and the second rotor cheek; a mass damper disposed between the first rotor cheek and the second rotor cheek.
A number of variations may include a casting including a body portion and a mass damper extending therefrom wherein the body portion and the mass damper are a continuous un-joined single piece of cast metal, and wherein the mass damper is constructed and arranged to prevent, reduce or retard vibrations of the body portion.
Other illustrative variations of the invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while disclosing optional variations of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Select examples of variations of the invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
The following description of the variations is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
In a number of variations, a part 10 may have various geometric, dimensional, and structural configurations The part 10 may be made from any of a variety of materials including, but not limited to, at least one of cast iron, steel, aluminum, titanium, or other metallic/non-metallic (ceramic or refractory) materials. The part 10 may be subject to vibration/dynamic loading during use including, for example, but not limited to, use as a brake rotor, brake hub, pulley, gear, shaft, bearing, engine, baseball bat, lathe machine, milling machine, drilling machine, or grinding machine. The part 10 may be damped for use, for example but not limited to, within automotive applications.
A number of variations of the invention are illustrated by
Referring to
According to one variation, the part 10 may include at least one mass damper 22 that is tuned to damp a single rotor resonance or a plurality of rotor resonance frequencies or vibrational modes. Resonance or vibrational modes may include, but are not limited to, nodal diametrical, nodal circular, compressional, or a combination of various vibrational modes.
In a number of variations, the plurality of mass dampers 22 may have varying shapes and sizes whereby the various shapes and sizes of mass dampers are tuned to damp a plurality of rotor resonance frequencies or vibrational modes.
In a number of variations, the mass dampers 22 may extend from the first face 26 or the second face 28 or from both the first face 26 and the second face 28 so that the mass dampers 22 may be disposed between the first annular portion 16 and the second annular portion 18.
In one variation, the integrated mass dampers 22 may extend from the plurality of ribs 20 so that the mass dampers 22 may be disposed between the first annular portion 16 and the second annular portion 18.
In another variation, the integrated mass dampers 22 may be disposed between the first annular portion 16 and the second annular portion 18 via mechanical attachment such as, but not limited to, welding, bonding, bolting, or other suitable means.
In another variation, the integrated mass dampers 22 may be disposed between the first annular portion 16 and the second annular portion 18 via a one-piece design wherein the integrated mass dampers 22 are cast in place within the part 10 during the casting of the part 10.
In another variation, the integrated mass dampers 22 may be disposed between the first annular portion 16 and the second annular portion 18 via a one-piece design wherein the integrated mass dampers 22 are machined into the part 10 after the part 10 has been manufactured.
Referring again to
As illustrated in
In a number of variations illustrated by
A number of variations are illustrated in
The following description of variants is only illustrative of components, elements, acts, product and methods considered to be within the scope of the invention and are not in any way intended to limit such scope by what is specifically disclosed or not expressly set forth. The components, elements, acts, product and methods as described herein may be combined and rearranged other than as expressly described herein and still are considered to be within the scope of the invention.
Variation 1 may include a product comprising: a casting including a body portion and a mass damper extending therefrom wherein the body portion and the mass damper are a continuous un-joined single piece of cast metal, and wherein the mass damper is constructed and arranged to prevent, reduce or retard vibrations of the body portion.
Variation 2 may include a product as set forth in Variation 1 wherein the body portion includes an annular portion.
Variation 3 may include a product as set forth in any of Variations 1-2 wherein the body portion includes a first annular portion and a second annular portion, and wherein the mass damper includes an anchor portion connected to at least one of the first annular portion or the second annular portion.
Variation 4 may include a product as set forth in any of Variations 1-3 wherein the anchor portion is connected to both the first annular portion and the second annular portion.
Variation 5 may include a product as set forth in any of Variations 1-4 wherein the body portion includes a first annular portion and a second spaced apart annular portion and at least one rib extending between the first annular portion and the second annular portion, and wherein the mass damper is connected to the rib.
Variation 6 may include a product comprising: a vented brake rotor including a hub and a first annular portion extending from the hub; the annular portion including a first rotor cheek, a second rotor cheek spaced apart from the first rotor cheek and at least one rib extending between the first rotor cheek and the second rotor cheek; a mass damper disposed between the first rotor cheek and the second rotor cheek.
Variation 7 may include a product as set forth in Variation 6 wherein the mass damper includes a first anchor portion and a protrusion or jut extending from the first anchor portion, and wherein the first anchor portion is connected to at least one of the first rotor cheek, the second rotor cheek or the at least one rib.
Variation 8 may include a product as set forth in any of Variations 6-7 wherein the first anchor portion is connected to both the first rotor cheek and the second rotor cheek.
Variation 9 may include a product as set forth in any of Variations 6-8 wherein the first anchor portion connected to the at least one rib.
Variation 10 may include a product as set forth in any of Variations 6-9 wherein the first anchor portion is connected to at least one of the first rotor cheek or second rotor cheek nearest an outer annular periphery thereof.
Variation 11 may include a product as set forth in any of Variations 6-10 wherein the first anchor portion is connected to at least one of the first rotor cheek or second rotor cheek at a location nearest the hub than to an outer annular periphery of one of the first rotor cheek or second rotor cheek.
Variation 12 may include a product as set forth in any of Variations 6-11 wherein the mass damper is mechanically attached to one of the first rotor cheek, second rotor cheek, or the at least one rib.
Variation 13 may include a product as set forth in any of Variations 6-12 wherein the mass damper includes a protrusion or jut extending from the first anchor portion, the protrusion or jut having a free end.
Variation 14 may include a product as set forth in any of Variations 6-13 wherein the mass damper comprises at least one of a composite material, a thermoplastic material, a thermoset material, a ceramic or a metal.
Variation 15 may include a product as set forth in any of Variations 6-14 the mass damper further comprising a second anchor portion extending between the first rotor cheek and the second rotor cheek, and a being portion extending between the first anchor portion and the second anchor portion.
Variation 16 may include a product as set forth in any of Variations 6-15 wherein the mass damper and at least one of the first rotor cheek or second rotor cheek are a continuous integral un-joined single piece.
Variation 17 may include a product as set forth in any of Variations 6-16 further comprising at least one rib extending between the first rotor cheek and the second rotor cheek, and wherein the mass damper and the at least one rib are a continuous integral un-joined single piece.
Variation 18 may include a product as set forth in any of Variations 6-18 wherein the mass damper is mechanically connected to at least one of the first rotor cheek or second rotor cheek.
Variation 19 may include a product as set forth in any of Variations 6-18 further comprising at least one rib extending between the first rotor cheek and the second rotor cheek, and wherein the mass damper is mechanically connected to at least one of the first rotor cheek, second rotor cheek or the at least one rib.
Variation 20 may include brake rotor comprising: a casting including a body portion and a mass damper extending therefrom wherein the body portion and the mass damper are a continuous un-joined single piece of cast metal, and wherein the mass damper is constructed and arranged to prevent, reduce or retard vibrations of the body portion.
The above description of select examples of the invention is merely exemplary in nature and, thus, variations or variants thereof are not to be regarded as a departure from the spirit and scope of the invention.
