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52 results about "Small finger" patented technology

Significant reduction in both length and girth of the finger compared to the contralateral finger, or alternatively, compared to a typical finger size for an age-matched individual. [eom:5b823be1388221a1, pmid:19125433]

Underactuated humanoid dexterous robotic hand device

The invention relates to an underactuated humanoid dexterous robotic hand device, which is provided with five independently controlled modular fingers and has 16 freedom degrees. The whole hand is driven by 11 motors; the dimension and the shape are similar to those of the hand of an adult. Except for a thumb, the other four fingers have the completely identical structures; the thumb has one freedom degree of doing longitudinal rotation around the palm base; through the arrangement of a rotating shaft, when the whole hand grasps objects, the grasping force of the forefinger, the ring finger and the small finger on the objects can be in symmetrical distribution at the two sides of the middle finger; the grasping stability is improved. Modular fingers are used; the two motors are respectively used for driving a finger base part joint, a middle joint and a tail end joint; the middle joint and the tail end joint are coupled by a structure-variable connecting mechanism; through a connecting rod mechanism, the relative positions of the two coupled finger joints after the contact with the objects can be actively regulated, so that the fingers can wrap the objects according to the shape of the grasped objects; the self adaptability to the appearance of the objects is high; the grasping action better conforms to the human hand. The structure of the whole hand is simple; the grasping force is great; the grasping rigidity is high; the control is simple; the grasping self adaptability is high; the underactuated humanoid dexterous robotic hand device is applicable to the fields of disabled people artificial hands, explosive handling, nuclear equipment detection and humanoid robots.
Owner:杜宇

Bioelectrical impedance measuring apparatus

ActiveUS20110237926A1Easy to handleReliable and precise measuring value of impedanceDiagnostic recording/measuringSensorsHuman bodyBioelectrical impedance analysis
The present invention provides bioelectrical impedance measuring apparatus for determining composition data of a human body, the apparatus including a plurality of electrodes and measuring circuitry which inject, through two electrodes, alternating current into the body, and which determine, with two other electrodes on different limbs, the resulting voltages, and which determine therefrom the impedance of body segments. In one apparatus, two hand contact bodies are disclosed, each of which is shaped in such a manner and provided with two electrodes in such a manner that a user when contacting the hand contact bodies with his hands comes into contact with two electrodes for each hand at the respective hand contact body. Each hand contact body includes a hand seating surface for placement of a hand inner surface thereon, each hand seating surface includes an electrically insulating separating wall extending over a part of the length of the hand seating surface, the separating wall being adapted to project into the space between middle and ring finger when a hand is placed on the hand seating surface, and on both sides of the separating wall an electrode is included such that, when a hand is placed on the hand seating surface, one electrode comes into contact with the small finger and/or ring finger at the other electrode comes into contact with middle finger and/or index finger.
Owner:SECA AG

32-degree-of-freedom bionic compliant internal skeleton dexterous hand

The invention discloses a 32-degree-of-freedom bionic compliant internal skeleton dexterous hand. The dexterous hand uses an anatomy structure of a human hand for reference, a hand portion is of an inner skeleton type, and the outer surface is suitable for being covered with a flexible bionic skin layer with a certain thickness; a joint adopts double-driver antagonistic type drive, so that the compliance operation and the robustness are both taken into account; a tendon coupling piece and a tendon sheath fixing piece are adopted, so that the hand portion and a wrist portion can be easily disassembled and assembled; metacarpophalangeal joints of five fingers all have convolution degrees of freedom so that the fingers can automatically and compliantly adapt to a complex curved surface; a carpometacarpal joint of a thumb has two degrees of freedom of bending-stretching and annular rotation, a metacarpophalangeal joint of the thumb has the degree of freedom of side sway, carpometacarpal joints of a ring finger and a small finger have degrees of freedom of bending-stretching and inward retracting-outward stretching, an opposing action can be performed so that complex pinching operationcan be executed; the axes of all the degrees of freedom of the multi-degree-of-freedom joint are orthogonal, so that control and motion planning calculation is facilitated; and the dexterous hand is very suitable for compliantly operating objects of complex shapes, so that production, disassembly, assembly and maintenance are facilitated.
Owner:NEUROCEAN TECH INC

Bionic soft dexterous hand

The invention relates to a bionic soft dexterous hand. The bionic soft dexterous hand comprises a palm and five fingers. A plurality of palm side oval groove openings are arranged on the palm sides ofa forefinger, a middle finger, a ring finger and a small finger. A lateral oval groove opening is evenly arranged on the heels of the forefinger, the ring finger and the small finger facing the middle finger. The palm side oval groove opening is arranged on the side of a tiger mouth, and a lateral oval groove opening is arranged on the heel of a big toe. The palm side oval groove openings and thelateral oval groove openings are evenly flexible hinges and provided with threading holes. The threading holes penetrate traction lines. One end of the traction lines are fixed at a fingertip, the other end of the traction lines are gathered in a palm center and are led out from a wrist after bypassing a threading block set in the palm center. The flexure hinges are deformed by the stretching ofthe traction lines to achieve the bending movement of five fingers laterally or toward the palm center. Compared with the prior art, the bionic soft dexterous hand achieves manipulation actions and releases of hand objects such as grasping, holding, pinching and clamping by means of the coordination between fingers, has a rigid and soft combination, and is simple and convenient to control
Owner:TONGJI UNIV

Finger posture judging method of mechanical arm and mechanical arm

The embodiment of the invention discloses a finger posture judging method of a mechanical arm. The finger posture judging method comprises the following steps that if driving torque reaches a load preset value, the big finger joint angle alpha and the small finger joint angle beta of the mechanical arm are acquired, the fingertip distance x of the mechanical arm is calculated according to the following formula: x=1-2l6 cos alpha-2l3 cos (beta+alpha-phi), if x is not equal to 0, it is confirmed that the mechanical arm grabs an object, l represents a line of three hinged points of two big finger joints and a palm of the mechanical arm, l3 represents a line of a hinged point between the small finger joints and the big finger joints and the fingertip of the fingers, and l6 represents a line between the big finger joints and the hinged points of the palm and the small finger joint of the fingers. The finger posture judging method can assist an existing driving torque load in judging the finger postures, the occurrence of posture misjudgment is avoided, accurate position control over the mechanical arm is executed, and the grabbing precision and reliability are improved. On the basis, the invention further provides the mechanical arm implementing the finger posture judging method.
Owner:AUBO BEIJING ROBOTICS TECH CO LTD

Fascia gun

PendingCN112137870AReduce the gripEffort-saving gripVibration massageLittle fingerHuman body
The invention provides a fascia gun. The fascia gun comprises a machine body, a massage head, a handle and a motor assembly, wherein the massage head is arranged at the head of the machine body and used for massaging the human body; and the handle is arranged on one side of the machine body and is convenient for a user to hold by hand, so that the fascia gun is held by hand to massage the part, needing to be massaged, of the user. The free part of the handle faces the direction of a connecting part connected with the machine body, and the cross section area of the connecting part is graduallyincreased to form a limiting inclined plane, so that the handle has a very good limiting effect; the cross section area of the connecting part is gradually increased, so that the appearance surface presented by the connecting part can also increase the friction force between the hand of the user and the connecting part when the hand of the user holds the connecting part, and the hand of the user can be effectively prevented from moving towards the machine body on the handle; and meanwhile, the shape of the handle also conforms to the shape of the handle held by hand, that is, a finger ring defined by the index finger of the user is larger than a finger ring defined by the little finger, so that the user does not feel sour and tired when holding the handle for a long time.
Owner:GUANGDONG SKG INTELLIGENT TECH CO LTD

Glove structure and manufacturing method thereof

The invention relates to a glove structure and a manufacturing method thereof. The glove structure comprises a glove core and an injection molding assembly, the glove core is provided with a palm body part and a little finger part connected with the palm body part, the little finger part is provided with a finger surface, a finger back opposite to the finger surface and two corresponding finger sides used for connecting the finger surface and the finger back, each of the two finger sides is provided with a finger root end and a finger tip end opposite to the finger root end, the finger root end is connected with the palm body, the injection molding assembly covers at least one part of the glove core, the injection molding assembly forms a little finger side groove between the finger root end of the finger side, close to the palm side of the palm body part, of the little finger part and the finger tip end, a palm side groove is formed in the palm side of the palm body part, the little finger side groove and the palm side groove are communicated with each other, and the part, not wrapped by the injection molding assembly, of the glove core is exposed out of the little finger side groove and the palm side groove. By means of the glove structure, when a user wears the glove structure for a long time to work, sweat cannot accumulate in the glove structure easily, and/or ulna nerves cannot be pressed easily to cause hand paralysis of the user.
Owner:SHANGHAI JINFENGYU GLOVE CO LTD
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