Child safety seat

• US 9,873,359 B2
• Filed: 12/10/2015
• Issued: 01/23/2018
• Est. Priority Date: 12/23/2014
• Status: Active Grant

• Current Assignee: Wonderland Switzerland AG
• Original Assignee: Wonderland Nurserygoods Company Limited
• Inventors: Williams, Bruce L., Sellers, Gregory S.
• Primary Examiner(s): Michener, Joshua J
• Assistant Examiner(s): Walraed-Sullivan, Kyle J.
• Application Number:
  US14/965,129
• Publication Number:
  US 20160176320A1
• Time in Patent Office: 775 Days
• Field of Search: None
• CPC Class Codes: B60N 2/2821 having a seat and a base part
• CPC Class Codes: B60N 2/2872 provided with side rests
• CPC Class Codes: B60N 2/2875 inclinable, as a whole or partially

Abstract

A child safety seat includes a base having a shell body, a seat shell assembled with the base, the seat shell being adjustable between a plurality of recline positions relative to the base, and a lock mechanism operable to lock the seat shell with the base at any of the recline positions. The lock mechanism includes two latches assembled with the shell body and movable to engage with and disengage from the seat shell, and two release buttons respectively disposed at a left and a right side of the base and respectively coupled with the two latches, each of the two release buttons being independently operable to drive concurrent unlocking displacements of the two latches.

Claims

1. A child safety seat comprising:

a base having a shell body;

a seat shell assembled with the base, the seat shell being movable on the base for adjustment between a plurality of recline positions relative to the base; and

a lock mechanism operable to lock the seat shell with the base at any of the recline positions, wherein the lock mechanism includes two latches assembled with the shell body and movable to engage with and disengage from the seat shell, a linking bar and two release buttons, the linking bar being pivotally assembled with the shell body about a pivot axis, the two latches being respectively connected with the linking bar at two opposite sides of the pivot axis, and the two release buttons being respectively disposed at a left and a right side of the base and respectively coupled with the two latches, each of the two release buttons being independently operable to drive concurrent unlocking displacements of the two latches for disengaging the two latches from the seat shell, wherein at least a first one of the two latches has an extending portion located adjacent to a first one of the two release buttons, and a toothed portion located in a region between the pivot axis and the extending portion, the first latch being movable to engage the toothed portion with the seat shell and to disengage the toothed portion from the seat shell.

2. The child safety seat according to claim 1, wherein the two release buttons and the two latches are disposed along an axis extending transversally from the left to the right side of the base.

3. The child safety seat according to claim 1, wherein the two latches are respectively connected pivotally with the linking bar.

4. The child safety seat according to claim 1, wherein the first release button drives an unlocking displacement of the first latch through a sliding contact between the first release button and the extending portion.

5. The child safety seat according to claim 1, wherein the extending portion includes a resilient strip capable of elastic deformation respectively connected with the first latch and the first release button.

6. The child safety seat according to claim 1, wherein the two release buttons are pivotally assembled with the shell body of the base.

7. The child safety seat according to claim 1, wherein the two release buttons are slidably assembled with the shell body of the base.

8. The child safety seat according to claim 1, wherein the two release buttons are respectively affixed with the two latches, and are slidably assembled with the shell body of the base.

9. The child safety seat according to claim 1, wherein the two latches are spring biased to engage with the seat shell for locking the seat shell in any of the recline positions.

10. The child safety seat according to claim 1, wherein the two latches are slidable in transversally opposite directions relative to the shell body of the base, the two latches sliding toward each other to disengage from the seat shell, and the two latches sliding away from each other to engage with the seat shell.

11. The child safety seat according to claim 1, wherein the base further includes two display windows respectively disposed adjacent to the two release buttons, and the seat shell is assembled with two recline indicators, the two recline indicators being respectively movable along the two display windows while the seat shell is adjusted relative to the base.

12. The child safety seat according to claim 11, wherein the seat shell includes a guide slot for guiding upward and downward sliding movements of one of the two recline indicators relative to the seat shell.

13. The child safety seat according to claim 11, wherein the shell body of the base has a cavity in which the seat sell is at least partially received, and the two release buttons and the two display windows are disposed symmetrically at a left and a right side of the cavity.

14. The child safety seat according to claim 1, wherein the base is assembled with a plurality of first rollers that are in rolling contact with the seat shell, and the seat shell is assembled with a plurality of second rollers that are in rolling contact with the base.

15. The child safety seat according to claim 1, further including a spring respectively connected with the base and the seat shell, the spring applying a biasing force for urging the seat shell from a recline position toward an upright position.

16. A child safety seat comprising:

a base having a shell body;

a seat shell assembled with the base, the seat shell being movable on the base for adjustment between a plurality of recline positions relative to the base;

a linking bar pivotally connected with the shell body about a pivot axis;

two latches respectively connected with the linking bar at two opposite sides of the pivot axis, wherein the two latches are slidable to engage with the seat shell to lock the seat shell at any of the recline positions, and to disengage from the seat shell for recline adjustment of the seat shell relative to the base; and

a release button disposed at one of a left and a right side of the base and coupled with one of the two latches, the release button being operable to drive concurrent unlocking displacements of the two latches for disengaging the two latches from the seat shell, wherein at least a first one of the two latches has an extending portion located adjacent to the release button, and a toothed portion located in a region between the pivot axis and the extending portion, the first latch being movable to engage the toothed portion with the seat shell and to disengage the toothed portion from the seat shell.

17. The child safety seat according to claim 16, wherein the two latches are respectively connected pivotally with the linking bar.

18. The child safety seat according to claim 16, wherein the release button drives an unlocking displacement of the first latch through a sliding contact between the release button and the extending portion.

19. The child safety seat according to claim 16, wherein the extending portion includes a resilient strip capable of elastic deformation respectively connected with the first latch and the release button.

20. The child safety seat according to claim 16, wherein the release button is pivotally assembled with the shell body of the base.

21. The child safety seat according to claim 16, wherein the release button is slidably assembled with the shell body of the base.

22. The child safety seat according to claim 16, wherein the release button is affixed with one of the two latches, and is slidably assembled with the shell body of the base.

23. The child safety seat according to claim 16, wherein the two latches are spring biased to engage with the seat shell for locking the seat shell in any of the recline positions.

24. The child safety seat according to claim 16, wherein the two latches are slidable in transversally opposite directions relative to the shell body of the base, the two latches sliding toward each other to disengage from the seat shell, and the two latches sliding away from each other to engage with the seat shell.

25. The child safety seat according to claim 16, wherein the base further includes a display window disposed adjacent to the release button, and the seat shell is assembled with a recline indicator, the recline indicator being movable along the display window while the seat shell is adjusted relative to the base.

26. The child safety seat according to claim 25, wherein the seat shell has a guide slot for guiding upward and downward sliding movements of the recline indicator relative to the seat shell.

27. The child safety seat according to claim 16, wherein the base is assembled with a plurality of first rollers that are in rolling contact with the seat shell, and the seat shell is assembled with a plurality of second rollers that are in rolling contact with the base.

28. The child safety seat according to claim 16, further including a spring respectively connected with the base and the seat shell, the spring applying a biasing force for urging the seat shell from a recline position toward an upright position.