Temperature-independent vibration damper

摘要

A temperature-compensating damping element, which is suitable for the temperature-independent reduction of vibrations, which has a fixed, non-elastic outer part and a fixed, non-elastic inner part, which is either inserted fully or partly into a mating cut-out or opening of the outer part. The outer and inner parts have contact surfaces which are connected to one another by an elastic layer which comprises an elastomer material and which is, or can be, pre-tensioned with respect to a desired frequency by a tensioning element. The elastic layer which is responsible for the vibration damping is directly connected at one or more points to an additional elastic volume. The additional elastic volume is a multiple of the volume of the elastic layer, and has the effect that the excitation frequency of the damping element changes in the case of a temperature change within a temperature range.

主权项

1. A temperature-compensatable damping element (1) which is suitable for temperature-independent reduction of vibrations of a component (4) to be damped, the damping element comprising:
a rigid, non-elastic outer element (1.4), a rigid, non-elastic inner element (1.3) being inserted, either fully or partly, into a correspondingly shaped cut-out or opening of the outer element, the outer and the inner elements having contact surfaces which face each other and being connected to one another by an elastic layer (1.2) which comprises a first elastomer material and which is pretensionable with respect to a desired frequency by a tensioning means, the elastic layer being arranged between the contact surfaces of the outer and the inner elements, the elastic layer (1.2), which is responsible for vibration damping, being directly connected, at least one location, to an additional elastic volume (1.1), and the additional elastic volume (1.1) accommodating a second material having a coefficient of thermal expansion which is greater than a coefficient of thermal expansion of the first elastomer material forming the elastic layer (1.2), the additional elastic volume (1.1) being 5 to 100 times greater than a volume of the elastic layer (1.2), and having an effect that an excitation frequency of the damping element changes by a maximum of 10% in a case of a temperature change in a temperature range between about −30° C. and +50° C., wherein the contact surfaces of the outer and the inner elements of the first and the second damping elements are either conical or spherical.