Control circuit, child safety seat, and seat adjustment method

Patent metadata

Field	Value
Publication number	US-12024072-B2
Application number	US-202217965797-A
Country	US
Kind code	B2
Filing date	Oct 14, 2022
Priority date	Oct 19, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A control circuit according to the application is suitable for controlling an tilt angle of a carrier, wherein the control circuit includes: a sensor module, sensing a current angle of the carrier with a horizontal plane; a drive module, driving and adjusting the tilt angle of the carrier; and a control module, electrically connected to the sensor module and the drive module to output a control signal based on the current angle of the carrier with the horizontal plane, so as to dynamically adjust the tilt angle of the carrier. The application also provides a child safety seat and a method for adjusting the tilt angle between the seat and the base of the child safety seat.

First claim

What is claimed is:

1. A child safety seat comprising:
a base;
a seat mounted on the base; and
a control circuit disposed on at least one of the base and the seat, the control circuit comprising:
a sensor module configured to sense a current angle of the carrier base relative to a horizontal plane;
a drive module configured to drive and adjust a tilt angle of the seat; and
a control module electrically connected to the sensor module and the drive module to output a control signal to the drive module based on the current angle of the base relative to the horizontal plane, so as to dynamically adjust the tilt angle of the seat;

wherein:
a seat adjustment structure is adapted to adjust the tilt angle of the seat, the seat is slidable along a track and positioned in respect to the base, and the seat adjustment structure includes:
a first fixed member fixed to the seat and at least partially located below the seat; and
a second fixed member fixed to the base and at least partially located above the base, and
wherein the drive module is pivotally connected to the second fixed member through a transverse pivot shaft, such that the drive module is able to be pivoted around a transverse axis in respect to the second fixed member, a driving part of the drive module is movably coupled to the first fixed member in respect to the first fixed member, and under driving of the drive module, the first fixed member moves to bring the seat to slide along the track; and
the sensor module is disposed on either of the seat and the base to acquire the tilt angle of the seat in respect to the horizontal plane, and the drive module operates based on the control signal generated according to the tilt angle.

2. The child safety seat according to claim 1 , wherein:
the drive module includes:
a motor pivotably fixed to the second fixed member;
a screw, as the driving part of the drive module, being coupled to a driving shaft of the motor and configured to be driven by the motor to rotate; and
a nut fixed to the first fixed member and sleeved on the screw and configured to move on the screw with rotation of the screw to bring the first fixed member to move.

3. The child safety seat according to claim 1 , wherein:
the sensor module is mounted on the seat to acquire the tilt angle of the seat in respect to the horizontal plane; or
the sensor module is mounted on the base to acquire a tilt angle of the base in respect to the horizontal plane, and acquire the tilt angle of the seat in respect to the horizontal plane by calculating through a positional relationship between the drive module and the seat.

4. The child safety seat according to claim 1 , wherein:
the control module is configured to calculate a motion amount of the drive module according to the tilt angle acquired by the sensor module, and convert the motion amount into the control signal sent to the drive module.

5. The child safety seat according to claim 4 , further comprising an adjustment button being electrically connected to the control module to send a repositioning signal to the control module according to a user's operation, so as to readjust the tilt angle of the sea.

6. The child safety seat according to claim 4 , further comprising a communication module electrically connected to the control module and wirelessly connected to a terminal device,
wherein the terminal device is configured to send a repositioning signal to the communication module, and the communication module is configured to send the repositioning signal to the control module, so as to readjust the tilt angle of the seat.

7. The child safety seat according to claim 1 , wherein:
the sensor module includes a position sensor mounted on the drive module, when the drive module drives the sea, the position sensor records a relative movement mount of the seat; and
the control module is configured to calculate the tilt angle of the sea according to the relative movement amount of the seat.

8. The child safety seat according to claim 1 , wherein the base is provided with a sliding groove, and the seat is provided with a sliding rod, the sliding rod is mounted on the first fixed member and is movable along the sliding groove with movement of the first fixed member.

9. The child safety seat according to claim 8 , wherein the first fixed member is in a sleeve configuration, and the sliding rod passes through the first fixed member and protrudes from both ends of the first fixed member; and
the sliding groove is provided by pairs for accommodating both ends of the sliding rod protruding from the first fixed member.

Assignees

• Wonderland Switzerland Ag

Inventors

• Wang Tao
• Cheng Manqun

Classifications

• B60N2/0277

  characterised by the calculation method or calculation flow chart of sensor data for adjusting the seat · CPC title

• B60N2/2887

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

• B60N2/2821 Primary

  having a seat and a base part · CPC title

• B60N2/2878

  the back-rest being inclinable · CPC title

• B60R21/01554

  Seat position sensors · CPC title