Dual rate jounce bumper and a vehicle comprising the same

[0030]An aspect of the present invention is embodiment 1, directed to a dual-rate jounce bumper (20) for limiting a jounce travel between a first component (22) and a second component (24) of a vehicle (26) with the second component (24) spaced from and moveable towards the first component (22) along a jounce axis, said jounce bumper (20) comprising:[0031]a bumper (40) having a first end (42) for coupling to the first component (22) and a second end (44) spaced from said first end (42) for contacting the second component (24) with said bumper (40) compressible between the first and the second components (22, 24) for limiting jounce with said bumper (40) radially expandable as said bumper (40) is compressed, and[0032]an outer member (50) disposed about said bumper (40) and capable of limiting the radial expansion of said bumper (40) as said bumper (40) is compressed for increasing a stiffness of the bumper (40),[0033]wherein said outer member (50) is obtained by overmolding stainless st

[0165]Yet another aspect of the present invention is embodiment 3 which is directed to a ring obtained by overmolding stainless steel with the TPU having a shore hardness ranging from a Shore D hardness of 50 to a Shore D hardness of 80 determined according to ASTM D2240-15e1, said ring comprising an upper surface, a lower surface, a first wall and a second wall with said upper surface and said lower surface being inclined towards each other, wherein each of the upper surface and the lower surface is an arcuate surface. This is shown in FIG. 6

[0166]In the present context, the TPU referred herein is the same as the TPU described in the embodiment 1 or 2. In one embodiment, the outer member (50) in the embodiment 1 or 2 is the ring of embodiment 3.

[0167]In another embodiment, each of the upper surface and the lower surface is the arcuate surface, as described herein. In one embodiment, each of the upper surface and the lower surface in the embodiment 3 is the concave surface, i.e. the sa