Seat angle adjusting device and seat with same

Abstract

The invention discloses a seat angle adjusting device comprising a ratchet wheel, a stop plate, a locking slider and a pawl. A driving device can optionally drive the locking slider to a locking position or a retracting position and drive the pawl to a stretching position or a retracting position. The stop plate is provided with a first stop limit portion and a second stop limit portion. When the first stop limit portion is stressed by rotation torque in rotation direction, the locking slider at the locking position is abutted against the circumference of the first stop limit portion. When the rotation torque is larger than a first preset torque value, the first stop limit portion can deform circumferentially under the action of the locking slider, and the pawl at the extending position can be driven to rotate by the ratchet wheel to a toothed portion on one side of the pawl to mesh with the ratchet wheel completely. When the rotation torque is larger than a second preset torque value, the second stop limit portion can be abutted against the pawl, and the second preset torque value is larger than the first preset torque value. The invention further provides a seat utilizing the seat angle adjusting device on the basis of the above structure.

Description

Technical field [0001] The invention relates to a seat with an adjustable seat back angle, in particular to a seat angle adjusting device and a seat with the angle adjusting device. Background technique [0002] The seat angle adjuster is used to connect the seat and back of the car seat to enhance the comfort of the seat. Passengers can adjust the angle of the seat back to the best position through the seat angle adjuster to obtain the most comfortable and most accustomed riding angle. For the driver, the best view can be obtained by adjusting the angle of the seat back, and it is easy to manipulate the steering wheel, pedals and gear levers. [0003] With the development of the automobile industry and increasing customer demand, higher requirements are put forward for the high strength and high energy absorption of car seats. As one of the core components of the car seat, the seat angle adjustment device also needs to improve its strength and energy absorption, so as to ensure ...

AI Technical Summary

Problems solved by technology

However, since the pawl 25 is deformed by the projection 14 of the stop plate (stop plate) 5 and pushed to engage with the ratchet when the second level of strength is activated, the manufacturing accuracy of each part will affect the separation The reliable engagement between the pawl and the ratchet wheel affects the energy absorption performance of the car when it is impacted, which in turn affects the safety and reliability of use

At the same time, due to the inevitable performance differences of different batches of materials, the deformation degree and deformation trend of materials with different mechanical properties are different. Therefore, this scheme also has high requirements for the mechanical properties of materials.

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