Compensation type movement mechanism

Abstract

The invention discloses a compensation type movement mechanism, comprising a fixed component which is internally provided with a first chute hole, a movable component which is arranged in the first chute hole in a sliding manner, a driving component which is arranged in the fixed component and is used for driving the movable component to move forward and backward, a locking component which is arranged in the fixed component and is used for limiting the movable component from moving backwards but not limiting the movable component from moving forwards under the driving action of a driving mechanism when in a locking state, and an unlocking component which is used for driving the locking component to unlock. The compensation type movement mechanism disclosed by the invention is applied to a head rest of a seat, the head rest can be adjusted forwards and backwards in a normal service condition, comfort requirement of a passenger is met to the utmost extent, the head rest can automatically move forwards to a position closest to the head of the passenger in an adjustable stroke during a collision, and comfort of the head rest is improved. The compensation type movement mechanism disclosed by the invention also has the advantages of simple structure and maintenance convenience.

Description

technical field [0001] The invention relates to the technical field of seats, in particular to a compensating motion mechanism and its application in seat headrests. Background technique [0002] With the development of the times and the ever-changing science and technology, people have higher and higher requirements for passenger cars, and the first ones are the safety and comfort requirements for driving. The headrest supports the head during the daily use of the entire seat, and protects the head and neck when a collision occurs. In the past, the headrest that could be adjusted forward and backward could not be guaranteed to be within the adjustment range during a collision, so that it was at the closest position to the member's head. Therefore the safety is not perfect enough; moreover, the active headrest in the past can only be in an emergency, and the torso of the member drives the excitation plate to make the headrest move forward rapidly for a certain distance, whi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a seat headrest compensating movement mechanism for the problem that the front and rear adjustable mechanism of the existing seat headrest cannot ensure that the headrest is at the closest position to the head under certain circumstances. The seat headrest compensating movement mechanism can adjust the front and rear directions of the headrest in normal use, which can meet the comfort needs of the members to the greatest extent. During the collision process, it can ensure that the headrest can automatically move forward to the nearest member in the adjustable stroke. head position

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