Child safety seat

Patent metadata

Field	Value
Publication number	US-11518331-B2
Application number	US-202017016354-A
Country	US
Kind code	B2
Filing date	Sep 9, 2020
Priority date	Sep 10, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A child safety seat includes a first and a second restraining device, and an alert device and a first and a second switch serially connected in a series circuit. Each of the first and second restraining device is deployable to engage with a corresponding structure provided in a vehicle, each of the first and second restraining devices being operable independently and having an idle position and a deployed position. The first and second switches are respectively coupled operatively to the first and second restraining device, and are respectively closed when the first restraining device is in the deployed position and the second restraining device in the idle position. The alert device is thereby activable to emit an alert signal when the first restraining device is in the deployed position and the second restraining device in the idle position.

First claim

What is claimed is:

1. A child safety seat comprising:
a first and a second restraining device deployable to respectively engage with corresponding structures provided in a vehicle for restraining the child safety seat, the second restraining device being operable independently of the first restraining device, each of the first and second restraining device respectively having an idle position and a deployed position; and
an alert device and a first and a second switch serially connected in a series circuit, the first switch being operatively coupled to the first restraining device and the second switch being operatively coupled to the second restraining device, each of the first and second switch respectively having an open state and a closed state;
wherein the first switch is in the closed state when the first restraining device is in the deployed position and the second switch is in the closed state when the second restraining device is in the idle position, whereby the alert device is activable to emit an alert signal when the first restraining device is in the deployed position and the second restraining device in the idle position.

2. The child safety seat according to claim 1 , wherein each of the open state and the closed state of the first switch uniquely corresponds to one of the idle position and the deployed position of the first restraining device, and each of the open state and the closed state of the second switch uniquely corresponds to one of the idle position and the deployed position of the second restraining device.

3. The child safety seat according to claim 1 , wherein any of the first and second switches includes a biased switch.

4. The child safety seat according to claim 1 , wherein the first restraining device is connected with a switching actuator, the switching actuator being movable away from or toward the first switch as the first restraining device moves between the idle position and the deployed position to cause the first switch to turn between an open state and a closed state.

5. The child safety seat according to claim 4 , wherein the switching actuator is spaced apart from the first switch so that the first switch remains closed when the first restraining device is in the deployed position, and the switching actuator contacts with or is proximate to the first switch so that the first switch is open when the first restraining device is moved to the idle position.

6. The child safety seat according to claim 4 , wherein the switching actuator is fixedly connected with the first restraining device.

7. The child safety seat according to claim 6 , wherein the switching actuator includes a bar fixedly connected with the first restraining device.

8. The child safety seat according to claim 1 , wherein the second restraining device is connected with a switching actuator, the switching actuator being movable away from or toward the second switch as the second restraining device moves between the idle position and the deployed position to cause the second switch to turn between an open state and a closed state.

9. The child safety seat according to claim 8 , wherein the switching actuator is spaced apart from the second switch so that the second switch remains closed when the second restraining device is in the idle position, and the switching actuator contacts with or is proximate to the second switch so that the second switch is open when the second restraining device is moved to the deployed position.

10. The child safety seat according to claim 8 , wherein the second restraining device is connected with the switching actuator via a linking part.

11. The child safety seat according to claim 10 , wherein the linking part is a cable or flexible strip.

12. The child safety seat according to claim 8 , wherein the switching actuator is further connected with a spring configured to bias the switching actuator away from the second switch.

13. The child safety seat according to claim 1 , further including a sensor and a control signal emitter, the sensor being configured to detect whether one of the first and second restraining device is in the idle position or the deployed position, and the control signal emitter being operable to output a control signal that turns the first or second switch between an open state and a closed state according to a detection signal received from the sensor.

14. The child safety seat according to claim 13 , wherein the sensor is assembled with a support base of the child safety seat at a location adjacent to the first restraining device for detecting whether the first restraining device is in the idle position or the deployed position, or is assembled with the second restraining device for detecting whether the second restraining device is in the idle position or the deployed position.

15. The child safety seat according to claim 1 , including a support base, and a child seat having a backrest portion, the first restraining device being connected with the support base, and the second restraining device is connected with the child seat and is extendible at a top of the backrest portion.

16. The child safety seat according to claim 1 , wherein any of the first and second restraining devices includes a latch device operable to engage with an ISOFIX anchor provided in a vehicle, or a top tether provided at an upper region of a backrest portion of the child safety seat.

17. The child safety seat according to claim 1 , wherein the alert signal includes a sound, a light, or a combination thereof.

Assignees

• Wonderland Switzerland Ag

Inventors

• Guo Zheng-Wen

Classifications

• B60N2/2824

  part of the base being supported by the vehicle frame (B60N2/289 takes precedence) · CPC title

• B60N2/2887 Primary

  Fixation to a transversal anchorage bar, e.g. isofix · CPC title

• B60N2/2872

  provided with side rests · CPC title

• B60N2002/981

  Warning systems, e.g. the seat or seat parts vibrates to warn the passenger when facing a danger · CPC title

• B60N2/2893

  coupled to the seat sub-frame · CPC title