Torsional vibration damper
View Patent ↗A torsional vibration damper with a receptacle for several absorber masses pivotally held relative to the receptacle disposed around an axis of rotation in radial and circumferential direction. To be able to increase the mass of the absorber masses, the absorber masses have outside contours formed by several outside contour radii that remain within the receptacle over their entire swivel angle, and swivel over the entire swivel range near the outer circumference of the receptacle.
1. A torsional vibration damper, comprising:
a receptacle disposed around an axis of rotation, having an outer circumference; and,
several absorber masses guided radially on raceways in the receptacle and limitedly pivotally held in circumferential direction with a radially outside contour and a radially inside contour, which extends over a circumferential segment of the receptacle, wherein:
the outside contour is restricted to the outer circumference of the receptacle during displacement of the absorber mass along the raceways;
the outside contour or inside contour comprise different radii based on a rotation angle around the axis of rotation;
the inside contour of the absorber masses is formed respectively by a circular segment extending in both circumferential directions from a zero line of the absorber mass; and,
an inside contour between the circular segments is formed straight over a given length in the form of a line section.
2. The torsional vibration damper according to claim 1 , wherein a middle segment of the outside contour has a larger outside contour radius with respect to respective outside contour radii of end segments.
3. The torsional vibration damper according to claim 2 , wherein the outside contour radii of the end segments are equal.
4. The torsional vibration damper according to claim 1 , wherein an outside contour radius of the outside contour depending on the rotation angle is dependent on a swivel angle of the absorber mass with respect to the receptacle.
5. The torsional vibration damper according to claim 1 , wherein an outside contour radius of the outside contour depending on the rotation angle over the outside contour is dependent on a swivel radius of the absorber mass with respect to the receptacle.
6. The torsional vibration damper according to claim 1 , wherein, an outside contour radius of the outside contour depending on the rotation angle is dependent on a number of absorber masses distributed over the circumference.
7. The torsional vibration damper according to claim 1 , wherein, respective inside contour radii of circular segments have a midpoint that is defined by a circle shifted radially inwards by a swivel radius with respect to the axis of rotation, with a maximum swivel angle disposed with the swivel radius.
8. The torsional vibration damper according to claim 1 , wherein, the absorber mass in circumferential direction is limited by the outside and inside contours on both sides of side contours connecting the absorber mass, whereby said side contours are spaced apart by a division angle minus a distance.
9. The torsional vibration damper according to claim 8 , wherein, at least one side contour is disposed parallel to a line around a midpoint, whereby the midpoint is defined by a circle shifted radially inwards through a distance equal to a swivel radius with respect to the axis of rotation with a maximum swivel angle disposed with the swivel radius.
10. The torsional vibration damper according to claim 8 , wherein, at least one side contour is segmentally circular.
11. A torsional vibration damper, comprising:
a receptacle disposed around an axis of rotation, having an outer circumference; and,
several absorber masses guided radially on raceways in the receptacle and limitedly pivotally held in circumferential direction with a radial outside contour and a radial inside contour, which extends over a circumferential segment of the receptacle, wherein:
the outside contour is restricted to the outer circumference of the receptacle during displacement of the absorber mass along the raceways;
the inside contour comprises different radii based on a rotation angle around the axis of rotation;
an outside contour radius of the outside contour originating from the axis of rotation of the outside contour is dependent on the rotation angle and how many absorber masses are included in the several absorber masses, the absorber masses distributed over the circumference of the receptacle, pivotally held about a zero line with respect to the receptacle, within a maximum swivel angle, with a swivel angle and a swivel radius with respect to the receptacle; and,
the outside contour in a polar coordinate system is deposited dependent on the outside contour radius and on the rotation angle in the following context:
R
i
=
R
max
2
+
k
2
+
2
kR
max
sin
(
arcsin
(
h
sin
β
i
s
)
-
β
i
2
)
and
α
i
=
arccos
[
(
h
+
l
)
2
+
R
i
2
-
(
R
max
-
s
)
2
2
R
i
(
h
+
l
)
]
with
s
=
h
2
+
l
2
+
2
hl
cos
β
i
;
k
=
2
l
sin
β
i
2
;
h
=
l
sin
(
β
max
-
γ
)
/
sin
γ
;
γ
=
360
°
2
n
;
R max radius of the receptacle
β max maximum swivel angle of the absorber mass
β i swivel angle of the absorber mass
n number of absorber masses distributed over the circumference.