Vibration isolation for bicycle saddle using super elastic material members
A vibration isolator can be configured to provide improved vibration isolation performance, such as in connection with a bicycle saddle. The bicycle saddle can be operatively connected to a bicycle frame. The vibration isolator can be located within a portion of the bicycle frame. The vibration isolator can be operatively positioned with respect to the bicycle saddle. The vibration isolator being configured to exhibit a non-linear stiffness profile. The non-linear stiffness profile can include a region of quasi-zero stiffness. The vibration isolator including one or more super elastic material members.
1. A vibration isolator comprising:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the non-linear stiffness profile of the vibration isolator being selectively variable by controlling a temperature of the one or more super elastic material members.
2. The vibration isolator of claim 1 , wherein at least one of:
the first plurality of super elastic material members extend at substantially 90 degrees relative to the first landing; and
the second plurality of super elastic material members extend at substantially 90 degrees relative to the second landing.
3. The vibration isolator of claim 1 , wherein at least one of the first plurality of super elastic material members and the second plurality of super elastic material members are cables or wires.
4. The vibration isolator of claim 1 , wherein at least one of:
the first plurality of super elastic material members extend in a parabolic configuration; and
the second plurality of super elastic material members extend in a parabolic configuration.
5. The vibration isolator of claim 1 , wherein at least one of the first landing and the second landing are fixed.
6. The vibration isolator of claim 1 , wherein at least one of the first plurality of super elastic material members and the second plurality of super elastic material members are super elastic shape memory alloys.
7. A vibration isolator comprising:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness,
at least one of:
the first plurality of super elastic material members extend at an acute angle relative to the first landing; and
the second plurality of super elastic material members extend at an acute angle relative to the second landing.
8. A vibration isolator comprising:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness,
at least one of the first plurality super elastic material members and the second plurality of super elastic material members being pre-stretched to a quasi-zero stiffness region of the non-linear stiffness profile.
9. A vibration isolator comprising:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness,
the one or more super elastic material members being configured to be stretched to a quasi-zero stiffness region of the non-linear stiffness profile when loaded.
10. A vibration isolator comprising:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness,
when the plunger moves toward the second landing, the first plurality of super elastic material members are stretched and the second plurality of super elastic material members become less stretched while remaining in tension.
11. A system for vibration isolation of a bicycle saddle, the system comprising:
a bicycle saddle;
a bicycle frame, the bicycle saddle being operatively connected to the bicycle frame; and
a vibration isolator located within a portion of the bicycle frame, the vibration isolator being operatively positioned with respect to the bicycle saddle, the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the vibration isolator including one or more super elastic material members, the vibration isolator including:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the one or more super elastic material members being configured to be stretched to a quasi-zero stiffness region of the non-linear stiffness profile when loaded.
12. A system for vibration isolation of a bicycle saddle, the system comprising:
a bicycle saddle;
a bicycle frame, the bicycle saddle being operatively connected to the bicycle frame; and
a vibration isolator located within a portion of the bicycle frame, the vibration isolator being operatively positioned with respect to the bicycle saddle, the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the vibration isolator including one or more super elastic material members, the vibration isolator including:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
when the plunger moves toward the second landing, the first plurality of super elastic material members are stretched and the second plurality of super elastic material members become less stretched while remaining in tension.
13. The system of claim 12 , wherein at least one of:
the first plurality of super elastic material members extend in a parabolic configuration; and
the second plurality of super elastic material members extend in a parabolic configuration.
14. The system of claim 12 , wherein-at least one of:
the first plurality of super elastic material members extend at substantially 90 degrees relative to the first landing; and
the second plurality of super elastic material members extend at substantially 90 degrees relative to the second landing.
15. A system for vibration isolation of a bicycle saddle, the system comprising:
a bicycle saddle;
a bicycle frame, the bicycle saddle being operatively connected to the bicycle frame; and
a vibration isolator located within a portion of the bicycle frame, the vibration isolator being operatively positioned with respect to the bicycle saddle, the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the vibration isolator including one or more super elastic material members, the vibration isolator including:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
at least one of:
the first plurality of super elastic material members extend at an acute angle relative to the first landing; and
the second plurality of super elastic material members extend at an acute angle relative to the second landing.
16. A system for vibration isolation of a bicycle saddle, the system comprising:
a bicycle saddle;
a bicycle frame, the bicycle saddle being operatively connected to the bicycle frame; and
a vibration isolator located within a portion of the bicycle frame, the vibration isolator being operatively positioned with respect to the bicycle saddle, the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the vibration isolator including:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
the non-linear stiffness profile of the vibration isolator being selectively variable by controlling a temperature of at least one of the first plurality of super elastic material members and the second plurality of super elastic material members.
17. A system for vibration isolation of a bicycle saddle, the system comprising:
a bicycle saddle;
a bicycle frame, the bicycle saddle being operatively connected to the bicycle frame; and
a vibration isolator located within a portion of the bicycle frame, the vibration isolator being operatively positioned with respect to the bicycle saddle, the vibration isolator being configured to exhibit a non-linear stiffness profile, the non-linear stiffness profile including a region of quasi-zero stiffness, the vibration isolator including:
a first landing;
a second landing spaced from the first landing;
a plunger located between the first landing and the second landing;
a first plurality of super elastic material members operatively connected to the first landing and to the plunger; and
a second plurality of super elastic material members operatively connected to the plunger and to the second landing,
at least one of the first plurality of super elastic material members and the second plurality of super elastic material members being pre-stretched to a quasi-zero stiffness region of the non-linear stiffness profile.