Resin structure
A resin structure that includes a plurality of piezoelectric fibers that generate a charge by application of external energy; and an insulating resin coating at least one of the plurality of piezoelectric fibers.
1. A resin structure comprising:
a plurality of piezoelectric fibers that generate a charge by application of external energy; and
an insulating resin coating at least one of the plurality of piezoelectric fibers, wherein the insulating resin is porous.
2. The resin structure according to claim 1 , wherein the insulating resin has a greater elasticity than that of the plurality of piezoelectric fibers.
3. The resin structure according to claim 2 , wherein the insulating resin has a lower water absorption than that of the plurality of piezoelectric fibers.
4. The resin structure according to claim 1 , wherein the insulating resin has a lower water absorption than that of the plurality of piezoelectric fibers.
5. The resin structure according to claim 1 , wherein the plurality of piezoelectric fibers comprise a polylactic acid material.
6. The resin structure according to claim 1 , wherein the plurality of piezoelectric fibers have a circular sectional shape.
7. The resin structure according to claim 1 , wherein the insulating resin has a thickness of 60% or less of a diameter of the at least one of the plurality of piezoelectric fibers.
8. The resin structure according to claim 1 , wherein the plurality of piezoelectric fibers are a left-twisted yarn.
9. The resin structure according to claim 8 , wherein all of the plurality of piezoelectric fibers are covered with the insulating resin.
10. The resin structure according to claim 1 , wherein all of the plurality of piezoelectric fibers are covered with the insulating resin.
11. The resin structure according to claim 1 , wherein a stretching direction of each of the plurality of piezoelectric fibers coincides with an axial direction of each of the plurality of piezoelectric fibers.
12. The resin structure according to claim 1 , wherein the plurality of piezoelectric fibers are twisted together such that a stretching direction of the plurality of piezoelectric fibers is inclined at 45 degrees with respect to an axial direction of the resin structure.
13. The resin structure according to claim 1 , wherein the insulating resin comprises one of urethane, epoxy, acrylic, and polyester.
14. The resin structure according to claim 1 , wherein the plurality of piezoelectric fibers are a right-twisted yarn.
15. The resin structure according to claim 14 , wherein all of the plurality of piezoelectric fibers are covered with the insulating resin.
16. The resin structure according to claim 1 , wherein the at least one of the plurality of piezoelectric fibers is a wound piezoelectric body having a film shape.
17. A structure comprising a cloth including the resin structure of claim 1 .
18. The structure of claim 17 , wherein the insulating resin is a first insulating resin, the structure further comprising a second insulating resin coating the cloth.
19. A structure comprising:
a cloth including a plurality of piezoelectric fibers that generate a charge by application of external energy;
and an insulating resin coating the cloth, wherein the insulating resin is porous.