Active-passive hybrid driven integrated ankle joint and artificial foot structure
A hybrid drive, ankle joint technology, applied in prosthesis, medical science, artificial legs, etc., can solve the problems of lack of bionic characteristics, unclear combination of active and passive control, etc., to enhance gait adaptability and improve wearability. Comfort, adaptability to road conditions, and the effect of gait control
Active Publication Date: 2015-05-13
SUZHOU UNIV
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However, the above-mentioned patents do not have bionic characteristics, and the setting of the combination of active and passive control is not clear
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[0015] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0016] figure 1 It is the front view of the integrated ankle joint and prosthetic foot structure with active and passive hybrid drive provided by the preferred embodiment of the present invention; figure 2 It is a side view of the integrated ankle joint and prosthetic foot structure with active and passive hybrid drive provided by the preferred embodiment of the present invention. Such as figure 1 and figure 2 As shown, the active-passive mixed-driven integrated ankle joint and prosthetic foot structure provided by the preferred embodiment of the present invention includes a motor, a foot body, a lock and a spring 10, and the lock cooperates with different motion phases of the foot to compress o...
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The invention provides an active-passive hybrid driven integrated ankle joint and artificial foot structure. Shackles are arranged to be matched with different movement phases of a foot body to compress or release a spring to drive the foot body to move forward; when a heel touches the ground, a rear shackle opens, a front shackle locks, and the spring compresses to store energy; when a tiptoe touches the ground, both the front shackle and the shackle lock to maintain the spring to be fixed; when the inclining angle of an ankle joint is minimum, the rear shackle locks, the front shackle opens, and the spring is released. The active-passive hybrid driven integrated ankle joint and artificial foot structure can present different characteristics at different walking gait periods, and an elastic element inside can store energy when the heel touches the ground and release energy when the tiptoe is away from the ground to effectively provide part of energy needed at the later stage of a standing phase; when passive energy is insufficient, an ankle joint driving motor can be triggered actively to supplement energy, so that dynamics performance similar to a human body is realized, and wearing comfortableness and road condition adaptability of the ankle joint and an artificial foot are improved.
Description
technical field [0001] The invention belongs to the field of rehabilitation machinery, and in particular relates to an active-passive mixed drive integrated ankle joint and prosthetic foot structure. Background technique [0002] In the existing artificial ankle joint design, the ankle joint is usually designed as a passive joint, and only elastic elements such as springs are used to achieve shock absorption or energy storage. Because it does not have the ability to actively work, the walking gait is quite different from that of normal joints, resulting in asymmetrical gait on both sides. Moreover, through the analysis of human biomechanics, it is found that in the process of walking, the human ankle joint mainly does positive work. Therefore, the passive ankle joint cannot meet the active work requirements of the ankle joint. [0003] For the existing prosthetic feet, most of them are designed with the sole plate as a whole carbon fiber plate, so that it has a certain ela...
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Inventor 李娟李伟达胡海燕李春光张虹淼郭浩
Owner SUZHOU UNIV