Headrest support structure and infant carrier thereof

1. A headrest support structure applied to a safety seat, the safety seat having a headrest and a seat, the headrest support structure comprising:

a buffer mechanism connected to the headrest and the seat, elastic deformation of the buffer mechanism providing a buffer to the headrest and the seat,

wherein

the buffer mechanism comprises a reinforcement tube and a pad,

the pad is an elastic structure disposed on the seat and disposed opposite to the reinforcement tube, and

the pad is squeezed elastically by the reinforcement tube to provide a buffer to the headrest.

2. The headrest support structure of claim 1 , wherein the reinforcement tube is fixedly attached to the headrest.

3. The headrest support structure of claim 2 , wherein the reinforcement tube is fixed to the headrest along a longitudinal direction.

4. The headrest support structure of claim 3 , wherein the reinforcement tube comprises a fixing hole formed thereon for allowing a rivet to pass therethrough, and the reinforcement tube is fixedly attached to the headrest via the rivet.

5. The headrest support structure of claim 1 , wherein the pad is made of expandable polystyrene (EPS) material.

6. The headrest support structure of claim 1 , further comprising an adjustment mechanism, wherein the headrest is slidably connected to the seat, the adjustment mechanism is disposed on the headrest, and the adjustment mechanism is engaged with the seat in multiple stages along a height direction of the headrest.

7. The headrest support structure of claim 6 , wherein the adjustment mechanism comprises a locking member telescopically disposed on the headrest, the locking member is engaged with the seat when the locking member extends outside the headrest, and the locking member is disengaged from the seat for releasing the headrest when the locking member retracts back into the headrest.

8. The headrest support structure of claim 7 , wherein at least two locking holes are formed on the seat at different heights in a longitudinal direction, and a height of the headrest relative to the seat is adjusted by engagement of the locking member with any of the locking holes.

9. The headrest support structure of claim 8 , wherein the adjustment mechanism further comprises a linkage member, and the linkage member is disposed on the headrest and linked with the locking member.

10. The headrest support structure of claim 9 , wherein the linkage member is a rope-shaped structure, one end of the linkage member is fixed to the headrest, and another end of the linkage member is connected to the locking member.

11. The headrest support structure of claim 10 , wherein the adjustment mechanism further comprises an adjustment rod, a through hole is formed on the adjustment rod, and the linkage member extends into the adjustment rod via the through hole to be connected to the locking member.

12. The headrest support structure of claim 9 , wherein the adjustment mechanism further comprises an adjustment rod, and the headrest has a fixing block disposed thereon for fixing the adjustment rod.

13. The headrest support structure of claim 8 , wherein the adjustment mechanism further comprises an elastic member disposed on the headrest, and the elastic member is in contact with the locking member.

14. The headrest support structure of claim 13 , wherein the adjustment mechanism further comprises an adjustment rod, the locking member is slidably disposed on the adjustment rod, and the elastic member is between the adjustment rod and the locking member.

15. An infant carrier applied to a carrier body mounted on a movable carrier, the infant carrier comprising:

a seat;

a headrest slidably connected to the seat;

a base connected to the seat and detachably connected to the carrier body; and

a headrest support structure comprising:

a buffer mechanism connected to the headrest and the seat, elastic deformation of the buffer mechanism providing a buffer to the headrest and the seat,

wherein

the buffer mechanism comprises a reinforcement tube and a pad,

the pad is an elastic structure disposed on the seat and disposed opposite to the reinforcement tube, and

the pad is squeezed elastically by the reinforcement tube to provide a buffer to the headrest.

16. The infant carrier of claim 15 , wherein the carrier body is a car seat.

17. The infant carrier of claim 16 , wherein the seat is detachably connected to the base, the base has a first connection member disposed thereon, the car seat has a second connection member disposed thereon, and the base is fixed on the car seat via the first connection member and the second connection member.

18. The infant carrier of claim 15 , wherein the carrier body is a handle frame of a stroller.

19. The infant carrier of claim 18 , wherein the seat has a third connection member disposed thereon, the handle frame has a fourth connection member disposed thereon, and the seat is fixed to the handle frame via the third connection member and the fourth connection member.

20. A headrest support structure applied to a safety seat, the safety seat having a headrest and a seat, the headrest support structure comprising:

a buffer mechanism connected to the headrest and the seat, elastic deformation of the buffer mechanism providing a buffer to the headrest and the seat,

wherein

the buffer mechanism comprises a reinforcement tube, and the reinforcement tube is fixedly attached to the headrest,

the reinforcement tube is fixed to the headrest along a longitudinal direction,

the reinforcement tube comprises a fixing hole formed thereon for allowing a rivet to pass therethrough, and

the reinforcement tube is fixedly attached to the headrest via the rivet.