Pneumatic module based on pneumatic muscle, active headrest and passive safety device

Abstract

The invention relates to flexible execution equipment, and particularly discloses a pneumatic module based on pneumatic muscles, which comprises the pneumatic muscles (1) and a gas generator (2), and the main body part of the gas generator (2) is arranged in the open end of the pneumatic muscles (1) to seal the inner cavity of the pneumatic muscles (1), so that an integrated pneumatic module is formed. The gas generator (2) can generate high-pressure gas, so that the internal air pressure of the pneumatic muscle (1) is increased to generate axial contraction, and the gas generator (2) is sealed and keeps the increased air pressure. The invention further relates to an active headrest and to a passive safety device. According to the pneumatic module, the gas generator is integrated in the pneumatic muscle, so that the pneumatic module is more miniaturized and integrated, and the response is fast.

Description

technical field [0001] The invention relates to flexible actuators, in particular to a pneumatic module based on pneumatic muscles. Furthermore, the invention also relates to an active head restraint and a passive safety device. Background technique [0002] Studies have shown that the proportion of traffic accidents caused by rear-end collisions remains high, and more than 90% of injuries suffered by occupants in rear-end vehicles are neck whiplash injuries. When a rear-end collision occurs, a motor vehicle moving at high speed brakes sharply, or is suddenly hit by a high-speed vehicle behind after parking, and the occupant moves forward suddenly with his head and neck leaning back and then leaning forward, resulting in over-stretching and over-stretching. Flexion movement, spinal dislocation, contusion, bleeding, neck whiplash injury. [0003] In view of the above problems, those skilled in the art have adopted various technical schemes to prevent the occupant from causi...

AI Technical Summary

Problems solved by technology

This structure has the same problem as the active head restraint triggered by the gas generator, that is, the pre-tightening force of the pre-tightening spring is relatively large, so that the unlocking plastic part under the pressure of the pre-tightening spring for a long time will fail due to excessive internal stress

[0008] Based on the above-mentioned analysis of various active headrests in the prior art, it can be seen that although those skilled in the art have designed various active headrests, basically All active head restraints have the problems of complex structure, heavy weight, and high cost, and the protection effect is not ideal. Some even affect normal driving or cause more serious driving accidents, and cannot provide effective protection for occupants in time.

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