8 results about "Finger extension" patented technology

It measures finger movements accurately with a simple configuration. [Solution] A measuring device 1 for measuring the movement of a finger 3, comprising: a base portion 11 attached to the proximal phalanx 26 of the finger 3; a distal phalanx attachment portion 12 attached to the distal phalanx 28 of the finger 3; a connecting link 13 having one end 13a rotatably connected to the base portion 11 around a first rotation axis A1 and the other end 13b rotatably connected to the distal phalanx attachment portion 12 around a second rotation axis A2, connecting the base portion 11 and the distal phalanx attachment portion 12; and a sensor 14 for measuring the relative position of the distal phalanx attachment portion 12 with respect to the base portion 11, wherein the first rotation axis A1 is positioned on the fingertip 28a side of the PIP joint 22 when the finger 3 is extended.

The application discloses a multi-degree-of-freedom tendon-driven robot finger, which comprises a palm knuckle, a first knuckle, a second knuckle, a third knuckle, a driving device and a tendon, each knuckle comprises a knuckle body and a tendon guide mechanism; the first interphalangeal joint with three degrees of freedom is formed by connecting the palm knuckle and the first knuckle through a first ligament, the second interphalangeal joint with a single degree of freedom is formed by connecting the first knuckle and the second knuckle through a second ligament, and the third interphalangeal joint with a single degree of freedom is formed by connecting the second knuckle and the third knuckle through a third ligament; the tendon comprises a radial finger flexion tendon, a ulnar finger flexion tendon and a finger extension tendon, the tendon passes through the tendon guide mechanism and is connected with the driving device, the driving device drives the finger to perform extension-flexion movement and abduction-adduction movement through the tendon, and the finger extension tendon comprises a non-elastic main part for realizing extension of the first interphalangeal joint, a first elastic part for realizing extension of the second interphalangeal joint and a second elastic part for realizing extension of the third interphalangeal joint.

The utility model provides a swimming finger tip web, and relates to the technical field of sports auxiliary equipment, the swimming finger tip web is mainly composed of a finger tip web body, the finger tip web body is used for being sleeved on an index finger, a middle finger, a ring finger and a little finger at the same time, the finger tip web body is of a hollow cylindrical structure with two open ends, comprising a first opening end and a second opening end, the first opening end is a finger stretching-in end, the second opening end is a finger stretching-out end, and the size of the first opening end is larger than that of the second opening end. The water flow of the controllable area of the four fingers is gathered, and the pressure sense of the water flow can be transmitted to the finger faces due to the fact that the material is thin and soft, so that an athlete can clearly feel the pressure sense of the whole faces generated by gathering.

The application relates to the technical field of robots, in particular to a dexterous hand and a robot to solve the problem that a dexterous hand cannot simultaneously have high flexibility and small size due to a side swing structure. The dexterous hand has independent swing functions of small fingers and / or ring fingers through at least one first side swing driving assembly and one second side swing driving assembly, and the index finger also has an independent swing function. The extension direction of the first side swing driving assembly is parallel to the extension direction of the finger when the first side swing driving assembly is arranged to stretch, the extension direction of the second side swing driving assembly is crossed with the extension direction of the index finger when the second side swing driving assembly is arranged to stretch, and one end of the second side swing driving assembly extends towards the middle finger, so that the mounting position of the thumb is closer to the middle finger and the index finger. The compact structure of the dexterous hand enables the multiple fingers of the dexterous hand to have independent side swing functions while also considering small size, so that the dexterous hand is suitable for more extensive application scenarios.

The invention discloses a flexion-extension / contraction-extension rigid-flexible coupling type hand rehabilitation robot which comprises an integral frame, six finger restraining mechanisms, a finger contraction-extension driving mechanism and a finger flexion-extension driving mechanism, the finger restraining mechanisms are all mounted on the integral frame, and the finger flexion-extension driving mechanism is mounted on the integral frame. The finger folding and unfolding driving mechanism and the finger bending and stretching driving mechanism are also installed on the overall frame, the finger folding and unfolding driving mechanism comprises a first power unit and a transmission gear set, and the finger bending and stretching driving mechanism comprises a second power unit; the second power unit can drive the pull wire through the steering engine to pull the finger restraining mechanism to complete finger bending action, and the tension spring is connected with the pull wire to pull the finger restraining mechanism to complete finger stretching action. By means of the mode, folding, unfolding and bending and stretching actions of each finger can be achieved, and the hand function recovery effect of a hand dysfunction patient can be effectively improved.

An adjustable finger splint having a main body and slide. The slide configured to move relative to the main body to apply variable pressure to an injured finger to cause the injured finger to extend or straighten. The main body is movably coupled to a palmar support and at least a portion of a finger cradle to support the palm and metacarpophalangeal joint during use.

The application relates to a hand exoskeleton with assisted multi-finger extension and flexion and self-aligning joint axis, and relates to the technical field of rehabilitation medical devices.The hand exoskeleton with the self-aligning joint axis design in the prior art cannot realize large-range simultaneous extension / inner retraction of four fingers, and the hand exoskeleton with the distal end driving design of Bowden wires has the problem that the wire sleeve of the Bowden wire for independently driving a PIP joint interferes with finger movement.The hand exoskeleton comprises a thumb, an index finger, a middle finger, a ring finger, a little finger, a thumb transmission assembly, an index finger transmission assembly, a middle finger transmission assembly, a ring finger transmission assembly, a little finger transmission assembly, a base assembly and a distal end motor driving assembly, the distal end motor driving assembly drives the thumb transmission assembly, the index finger transmission assembly, the middle finger transmission assembly, the ring finger transmission assembly and the little finger transmission assembly through Bowden wires to realize extension and flexion of the thumb, the index finger, the middle finger, the ring finger and the little finger.The hand exoskeleton is used for hand rehabilitation training.

The invention relates to the technical field of manipulators, in particular to a multi-finger cooperative underactuated robot hand which comprises a palm shell, a limiting structure fixed in the palm shell, a transmission assembly and a driving assembly in order to flexibly control four fingers through a single motor. Each transmission assembly comprises a sliding block connected to the limiting structure in a sliding mode and a first spring with one end fixed to the sliding block and the other end serving as a fixed end, and the number of the transmission assemblies is four. The driving assembly comprises a first power source fixed to the palm shell, a limiting piece fixed in the palm shell, and a first rope, a second rope, a third rope and a fourth rope which are wound and released through the first power source. The first rope, the second rope, the third rope and the fourth rope are wound on the limiting piece to be higher than all the transmission assemblies, are wound on the four sliding blocks correspondingly and extend upwards to be used for being connected with the fingers, the first spring is used for providing reset force for the sliding blocks connected with the first spring, and when the first power source is wound, the first spring is used for pulling the fingers to be bent, and otherwise, the first power source is used for pulling the fingers to be bent.