Tether assembly, and child safety seat and support structure thereof

Patent metadata

Field	Value
Publication number	US-12179645-B2
Application number	US-202017777585-A
Country	US
Kind code	B2
Filing date	Nov 18, 2020
Priority date	Nov 18, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

The present disclosure discloses a child safety seat, which is for being installed on a vehicle seat. The child safety seat includes a base having an anchor part connected to the vehicle seat; a seat coupled to the base; a top rod fixed to the rear of the base; a tether assembly including a top tether and a tether fixing portion that are connected with each other, the top tether being connected with the top rod and the tether fixing portion being connected with the vehicle seat; and an alarm device including a switch which can be triggered when the top tether is tightened. The present disclosure also discloses a tether assembly and a support structure. The child safety seat can conveniently prompt that it is not correctly fixed, and can be conveniently fixed and adjusted, thereby improving the safety and riding comfort of the child safety seat.

First claim

What is claimed is:

1. A child safety seat comprising:
a base;
a top rod fixed to a rear of the base, the top rod being a separate component from a seat of the child safety seat;
a tether assembly comprising a top tether partially disposed inside the top rod; and
an alarm device configured for providing an alarm mechanism to determine whether the child safety seat has been disposed safely, the alarm device comprising:
a plurality of switches capable of being opened and closed;
a body capable of determining whether to give an alarm based on opening and closing of the plurality of switches;
an alarm part configured for giving the alarm if the body determines to give the alarm; and
a trigger part disposed at a lower side of a top of the top rod.

2. The child safety seat according to claim 1 , wherein
the base is provided with an anchor part protruding backwardly, the anchor part comprising two anchor arms;
the plurality of switches comprise two switches configured to be closed respectively if the two anchor arms are fixed in place; and a switch configured to be closed if the top tether is tightened.

3. The child safety seat according to claim 2 ,
wherein the top tether wraps around the trigger part, such that when the top tether is tightened, the top tether exerts a pressure on the trigger part, and the trigger part moves upward to trigger one of the plurality of switches.

4. The child safety seat according to claim 2 , wherein, the alarm device is configured to:
give an alarm when the top tether is tightened and the anchor part is not fixed in place, or when the top tether is not tightened and the anchor part is fixed in place; and
give no alarm when the top tether is tightened and the anchor part is fixed in place, or when the top tether is not tightened and the anchor part is not fixed in place.

5. The child safety seat according to claim 1 , wherein:
the base is provided with an anchor part protruding backwardly, the anchor part comprising two anchor arms;
wherein the tether assembly comprises one or two top tethers, the one or two top tethers being partially disposed inside the top rod, and
wherein the plurality of switches comprise two switches configured to be closed respectively if the two anchor arms are fixed in place; and two switches configured to be closed respectively if the one or two top tethers are tightened.

6. The child safety seat according to claim 1 , wherein, the top rod further comprises a cover plate, and the cover plate is sleeved on the top of the top rod and has an opening for the top tether to extend out, a groove for the trigger part to move is formed in the cover plate, and an elastic restoring member is connected between the cover plate and the trigger part to exert a tensile force, the switch is at least partially disposed in the groove, and when the trigger part moves in the groove, the one of the plurality of switches is triggered.

7. The child safety seat according to claim 1 , wherein an end of the top tether is fixed to a rear side of the top of the top rod, and extends through a lower side, a front side and an upper side of the top rod, and further extends away from the top.

8. A child safety seat comprising:
a base;
a top rod fixed to a rear of the base, the top rod being a separate component from a seat of the child safety seat;
a trigger part connected to the top rod and movable with respect to the top rod;
a tether assembly comprising a top tether partially connected to the top rod, the top tether is configured to drive the trigger part to move relative to the top rod; and
an alarm device configured for providing an alarm mechanism to determine whether the child safety seat has been disposed safely, the alarm device comprising:
a plurality of switches capable of being opened and closed;
a body capable of determining whether to give an alarm based on opening and closing of the plurality of switches; and

an alarm part configured for giving the alarm if the body determines to give the alarm;
wherein, when the top tether is tightened, the top tether drives the trigger part to move relative to the top rod and the trigger part to trigger one of the plurality of switches.

9. The child safety seat according to claim 8 , wherein the top rod comprising a rod, the trigger part protruding from the rod and movable with respect to the rod, the top tether wraps around the rod and the trigger part, one of the plurality of switches is located inside the rod, and when the top tether is tightened, the top tether exerts a pressure on the trigger part to drives the trigger part to move towards the inside of the rod, and the trigger part to trigger the one of the plurality of switches.

10. The child safety seat according to claim 9 , wherein an end of the top tether is fixed to a rear side of the rod and extends through a lower side, a front side, and an upper side of the rod.

11. The child safety seat according to claim 10 , wherein the trigger part protrudes from the lower side of the rod.

12. The child safety seat according to claim 9 , wherein the top tether surrounds an upper part of the rod, then to a front and lower parts of the rod and then to the upper part of the rod.

13. The child safety seat according to claim 9 , wherein the top rod has a U-shape, and the top tether wraps around to a transverse rod at the top of the rod and the trigger part protrudes from the transverse rod.

14. The child safety seat according to claim 9 , wherein the top rod further comprises a cover plate, and the cover plate is sleeved on the rod and covers the trigger part and a portion of the top tether that wraps around the rod, and the cover plate has an opening for the top tether to extend out, a gap is defined between the cover plate and the rod to allow the top tether to move along the opening of the cover plate.

15. The child safety seat according to claim 9 , wherein the trigger part is movable with respect to the rod along a first direction, and the trigger part triggers the one of the plurality of switches along a second direction that intersects with the first direction.

16. The child safety seat according to claim 8 , further comprising an elastic restoring member,
wherein the top rod comprises a rod, the trigger part protruding from the rod and movable with respect to the rod, the elastic restoring member disposed between the rod and the trigger part to tend to make the trigger part protruding from the rod for driven by the top tether.

17. The child safety seat according to claim 8 , further comprising an adjuster, wherein
the top tether comprises an adjustment belt and a connecting belt, the connecting belt connects the top rod and the adjuster, the tether assembly further comprising a tether fixing portion, the adjustment belt connects the tether fixing portion and the adjuster,
the adjustment belt passes through the adjuster and the adjuster is configured to lock or release the adjustment belt, and
a length of the adjustment belt is adjustable when the adjustment belt is released from the adjuster.

Assignees

• Wonderland Switzerland Ag

Inventors

• Guo Zhengwen
• Cui Zongwang
• Mo Xiaolong
• Li Ruyi
• Zhang Kun
• Liu Zujian
• Chen Yingzhong

Classifications

• B60N2/2821 Primary

  having a seat and a base part · CPC title

• B60N2/268

  detecting or alerting means responsive to the installation of the child seats in the vehicle · CPC title

• B60N2/2816

  with additional belt accessories, e.g. belt tension detectors · CPC title

• B60N2/2806 Primary

  for securing the child seat to the vehicle · CPC title

• B60N2/0228

  Hand-activated mechanical switches (B60N2/0229 takes precedence) · CPC title