V-springs and seals with v-springs
V-springs each with a plurality of V-bodies and wherein each V-body has two legs, one shorter than the other. Seal assemblies each with a sealing element having a spring cavity and having a V-spring located therein, the V-spring having a plurality of V-bodies and wherein each V-body each comprising two legs, a long leg that is longer in length than a short leg. The long leg, the short leg, or both long and short legs of the V-bodies can each have one or more bends or inflection points to change a projection of the long leg, the short leg, or both.
1. A seal assembly comprising:
a sealing element having an inside flange with a sealing lip, an outside flange with a sealing lip, and a center channel section defining a spring cavity, said outside flange extending in a first direction from the center channel section a longer distance than said inside flange when mounted onto a piston;
a V-spring located in the spring cavity, said V-spring comprising a plurality of V-bodies and wherein each V-body comprises a long leg extending in the first direction from a connecting portion a longer distance than a short leg extending from the connecting portion;
wherein said long leg forms a line contact with an inside surface of said outside flange, said line contact with said outside flange having a first length;
wherein said short leg has a terminal edge, and wherein said short leg is biased against an inside surface of said inside flange proximate said terminal edge and said short leg being spaced from said inside surface of said inside flange at a base section of said short leg, which is between said connecting portion and said terminal edge, to form either a point contact or a reduced line contact with said inside surface of said inside flange proximate said terminal edge; and
wherein when said reduced line contact is formed with said short leg, said reduced line contact with said inside flange has a second length, which is shorter than the first length.
2. The seal assembly according to claim 1 , wherein said short leg has a bend, the reduced line contact, and a terminal end section having a different profile than the base section of the short leg.
3. The seal assembly according to claim 1 , further comprising a first surface, a first sealing interface, a second surface, and a second interface; wherein said sealing lip of said inside flange seals against said first surface and said sealing lip of said outside flange seals against said second surface.
4. The seal assembly according to claim 3 , wherein said first sealing interface is a contact area between said sealing lip of said inside flange and said first surface.
5. The seal assembly of claim 4 , wherein a force is applied to said first sealing interface by the point contact or the reduced line contact between the short leg and the inside flange.
6. The seal assembly according to claim 3 , wherein said first surface is a surface of a piston.
7. The seal assembly according to claim 1 , wherein the long leg extends in the first direction from the connecting portion at a first angle and the short leg extends from the connecting portion at a second angle, and wherein the first angle and the second angle are unequal.
8. The seal assembly according to claim 1 , wherein the short leg provides a seal force on the inside flange that is higher than a seal force provided by the long leg on the outside flange.
9. A seal assembly comprising:
a sealing element having an outside flange with a sealing lip, an inside flange with a sealing lip defining a bore having a bore axis, and a center channel section; said outside flange, inside flange, and center channel section defining a spring cavity and said inside flange extending in a first axial direction from said center channel section a longer distance than said outside flange extending in the first axial direction from said center channel section when a shaft is located within the bore of the sealing element;
a V-spring located in the spring cavity without a separate second spring, said V-spring comprising a plurality of V-bodies and wherein each V-body comprises a long leg extending in the first axial direction from a connecting portion a longer distance than a short leg extending in the first axial direction from said connecting portion; and
wherein said short leg has a terminal edge and said short leg forms a point contact with an inside surface of said outside flange, and said long leg forms a line contact with an inside surface of said inside flange.
10. The seal assembly according to claim 9 , wherein said short leg has a base section, and wherein the base section of the short leg is spaced from the inside surface of the outside flange.
11. The seal assembly according to claim 9 , further comprising a surface and a sealing interface; wherein said sealing lip of said outside flange seals against said surface.
12. The seal assembly according to claim 11 , wherein said sealing interface is a contact area between said sealing lip of said outside flange and said surface.
13. The seal assembly according to claim 11 , wherein the long leg has a base section located between the connecting portion and a terminal edge, and wherein at least part of the base section of the long leg is spaced from the inside surface of the inside flange.
14. The seal assembly according to claim 9 , wherein the long leg extends in the first axial direction from the connecting portion at a first angle and the short leg extends from the connecting portion at a second angle, and wherein the first angle and the second angle are unequal.
15. The seal assembly according to claim 10 , wherein at least part of the base section of the short leg is spaced from the inside surface of the outside flange.