455 results about "Hand arm" patented technology

The invention discloses a forearm of a manipulator, which is provided with a wrist joint axis and an elbow joint axis, and comprises a shell comprising a supporting part and a main body part which are integrally formed, and the supporting part is provided with a first pressing end; the wrist belt wheel is coaxial with the axis of the wrist joint, the wrist belt wheel and the shell form a mounting space, the wrist belt wheel comprises a shaft part and a belt wheel part which are integrally formed, and a second pressing end is formed at the joint of the shaft part and the belt wheel part; the bearing is arranged in the mounting space, and the bearing is provided with an inner ring and an outer ring; the pressing assembly is coaxial with the axis of the wrist joint and comprises a first pressing piece and a second pressing piece; wherein the first press-fit part and the first press-fit end form axial constraint on the outer ring of the bearing, and the second press-fit part and the second press-fit end form axial constraint on the inner ring of the bearing, so that the wrist belt wheel can rotate relative to the shell through the bearing. By adopting the scheme, the concentricity of the forearm of the manipulator is improved, and the axial mounting space is reduced.

The utility model discloses a tennis elbow sheath in the technical field of tennis elbow guards, which comprises an arm sleeve, the arm sleeve is a flexible sleeve with two open ends, a hand traction belt extends out of the front end of the arm sleeve, the rear end of an arm resistance belt is connected onto the arm sleeve, and the rear end of the arm resistance belt can be connected onto a hinged shaft in a winding tightening or stretching manner. The pressure belt is bound to the arm sleeve in a tightness adjustable mode, the hand traction belt and the adjusting buckle are additionally arranged, the tension of the arm can be positioned and adjusted by positioning the hand traction belt through the palm, the arm bending and stretching tension of the whole arm sleeve is adjusted accordingly, impedance can be adjusted according to rehabilitation training, and rehabilitation training requirements of different degrees of patients can be met; a pressure belt and a pressing gasket are additionally arranged, an artificial secondary pole stop point is formed below a wrist extensor starting point, the stress of the wrist extensor at the humerus stop point is relieved, the pressing force can be adjusted, and therefore the purposes of relieving pain of a patient and strengthening the extensor strength are achieved.

A multi-degree-of-freedom bionic arm of a humanoid robot belongs to the technical field of robots, and seven degrees of freedom of the robot arm are formed by a shoulder swing arm rotating mechanism, a shoulder left-right swing arm rotating mechanism, a big arm axial rotating mechanism, an elbow rotating mechanism, a small arm axial rotating mechanism, a wrist rotating mechanism and a wrist inner drive rotating mechanism. Holes and grooves are formed in the elbow part for laying cables, the cables are not exposed, and the shell size of the elbow joint is reduced. And the cable does not run about when the elbow moves in a large range, so that interference with other parts is avoided. A connecting rod mechanism composed of a first output disc, two connecting rods and a second output disc is arranged on the side face, the load inertia of a forearm joint, a whole arm force arm and the tail end is reduced, and the arm load capacity and motion performance are improved; the wrist drives the front-back and left-right freedom degree axes of the hand to coincide at one point, and the flexibility of the wrist is improved. Due to seven degrees of freedom, the robot is more bionic, the degrees of freedom are also on the same straight line after the arms of a person are straightened laterally, and the movement offset is small.

The present invention discloses a robotic arm of an industrial robot, belonging to the field of mechanical transmission. The arm includes: a four-axis housing, a wrist housing, and a forearm housing composed of a rear-end forearm housing, an intermediate forearm housing, and a front-end forearm housing. A four-axis reduction mechanism is arranged inside the four-axis housing, a five-axis reduction mechanism, a six-axis first-stage reduction mechanism, and a six-axis second-stage reduction mechanism are arranged inside the forearm housing, and a six-axis third-stage reduction mechanism is arranged inside the wrist housing; the four-axis, five-axis, and six-axis reduction mechanisms all adopt a combined transmission mode of hypoid gears and involute gears, having the advantages of stable operation and strong impact resistance. While ensuring a reasonable layout, the entire arm system takes into account the overall lightweight design. In addition, the connection methods of the external interfaces with each joint and the motor interfaces adopt a flexible design, and the interfaces can be flexibly converted, with stronger applicability.

A prosthetic assistive device configured to attach to a distal end of a natural or prosthetic arm or wrist. The device may include a palm portion. A split hook may be coupled to a distal end of the palm portion. The split hook may comprise a first end effector and a second end effector. The prosthetic device may include a third end effector rotatably coupled to the palm portion at a proximal end of the palm portion. The third end effector may rotate about a transverse axis to pinch and unpinch, as well as rotate about a longitudinal axis to adduct and abduct. A rotating member such as a ring may rotate about a plate for adduction / abduction. The prosthetic device may include a drive assembly configured to rotate one or both of the split hook end effectors about two different axes.

The invention provides a multi-source heterogeneous data synchronous mechanical arm bionic control method and device and electronic equipment, and relates to the technical field of robot control, and the method comprises the following steps: decoding hand joint angle data and a synchronization timestamp thereof, wrist pose data and a synchronization timestamp thereof, and arm pose data and a synchronization timestamp thereof, and obtaining a decoding result; the decoded hand joint angle data, the decoded wrist pose data and the decoded arm pose data are transmitted to a mechanical arm controller through a low-delay network; and the mechanical arm controller executes dynamic remapping based on the decoded hand joint angle data, the decoded wrist pose data and the decoded arm pose data, and simulation control of the mechanical arm is achieved. According to the method, the arm pose data participates in dynamic correction of the base coordinate system, space positioning deviation is eliminated, and the mechanical arm reproduces actions; timing sequence block optimization considers fine grabbing and long track actions, and action restoration authenticity is improved.

The invention relates to the technical field of robot grabbing control, and discloses an anti-loosening grabbing control method and system for a mechanical arm of a robot, and differential adjustment is performed on the output force of each clamping finger of a clamping jaw through an independent clamping finger driving mechanism. The differential adjustment is one of the core innovation points of the application, and breaks through the limitation of traditional fixed clamping force or overall clamping force adjustment. For example, when it is detected that a certain part of the workpiece tends to slide, the system can specifically increase the output force of the clamping fingers corresponding to the part and correspondingly adjust the output force of the clamping fingers of other parts so as to restrain sliding, and meanwhile the situation that the overall clamping force is too large is avoided. The refined force control can effectively restrain various linear and rotating direction separation trends generated in the high-speed movement and posture change process of the workpiece, and the grabbing stability is remarkably improved.

An arm structure includes a shoulder joint, an elbow joint, a wrist joint, a first connection structure connecting the shoulder joint with the elbow joint and that relatively moves while maintaining an orientation of the elbow joint relative to the shoulder joint, a second connection structure connecting the elbow joint with the wrist joint and that relatively moves while maintaining an orientation of the wrist joint relative to the elbow joint, a third connection structure connecting the shoulder joint with the second connection structure and that relatively moves while maintaining an orientation of the wrist joint relative to the shoulder joint, a first actuator that rotates a first rotating shaft included in the first connection structure, and a second actuator that rotates a second rotating shaft included in the third connection structure. The first and second rotating shafts are supported by the shoulder joint.

The present disclosure relates to the field of artificial limbs for amputees and specifically to a passive compliant wrist unit 210 for upper limb prosthesis. The passive compliant can comprise a plurality of fingers controlled by a compliant four bar mechanism. The arm is capable of extension / flexion, radial / ulnar deviation on application of a force on the snap joint. The limb is also capable of pronation / supination actions. By application of a force on an arm snap joint, the flexible wrist 216 can be adapted to perform extension / flexion, radial / ulnar deviation.

The invention provides a rigid-flexible coupling wrist rehabilitation robot which comprises an arm supporting unit and a wrist supporting unit, the arm supporting unit is matched with the forearm of a patient, the wrist supporting unit is matched with the palm of the patient, and an upper / lower elastic rope support and a left / right elastic rope support are installed on a connecting plate of the forearm supporting unit. An elastic rope connecting anchor point at the front end of the upper elastic rope support and an elastic rope connecting anchor point at the front end of the lower elastic rope support are connected with corresponding anchor points of the wrist supporting unit through three elastic ropes to form an integral tensioning structure, and four driving flexible ropes penetrate through Bowden wire pipes installed in the elastic rope supports to be connected to the corresponding anchor points of the wrist supporting unit. And the flexion / extension and radial deflection / ulnar deflection of the wrist joint are realized by traction and driving of the flexible cable. The open type wearable structure is convenient for a patient to wear, and the problems that a rigid wrist rehabilitation robot is not matched with the instant movement center when the wrist of the patient moves and the joint torque of a flexible wrist rehabilitation robot is insufficient are solved, so that the treatment effect of rehabilitation training on the patient is improved.

The invention relates to an inflatable glove combined low-frequency electrical stimulation wrist-hand movement device, which comprises an inflatable glove and at least one group of electrical stimulation parts, the inflatable glove is a finger separating glove which is provided with an opening at one end and can be sleeved on a hand, and each finger part of the inflatable glove is provided with a segmented inflation and deflation structure; the electrical stimulation part is arranged to be a low-frequency electrode device which is adjustable in size and can be arranged on the wrist in a sleeving mode, and the face, facing the arm, of the electrical stimulation part releases low-frequency current in a mode of being attached to the skin. Through the arrangement of the inflatable glove and the electrical stimulation part, the device can be combined with air pressure massage and electrotherapy massage into a whole when in use, so that the hand and wrist of a patient can be better treated, and the treatment effect is improved; in addition, by adjusting the current in the electrical stimulation part, the device can be conveniently adjusted according to different patients and different muscle contraction conditions of the patients during use.

The present application is about an arm exoskeleton, an upper body exoskeleton and a teleoperation system, and relates to the field of robots. The arm exoskeleton includes a shoulder exoskeleton, an elbow exoskeleton and a wrist exoskeleton; the shoulder exoskeleton, the elbow exoskeleton and the wrist exoskeleton are connected in sequence. When the arm exoskeleton performs active movement according to control instructions, or performs passive movement following the user's arm movement, the shoulder motor group simulates the movement guided by the human shoulder joint, the elbow motor group simulates the movement guided by the human elbow joint, and the wrist joint group simulates the movement guided by the human wrist joint. When the user wears the arm exoskeleton to exercise, the motor group and the skeleton are combined and set corresponding to the shoulder joint, elbow joint and wrist joint of the user's arm, so that the arm exoskeleton simulates the human body movement more realistically during the movement process, and improves the simulation accuracy of the human body movement state.

An apparatus that supports a user in a variety of positions to comfortably perform tasks, such as applying one or more tattoos to skin of a subject is herein disclosed. The apparatus can be reconfigured to optimally position and support the arms and / or chest of the user. The apparatus includes a vertically movable armrest assembly. Armrests can support the user's forearms while supporting the user's chest such that the user can comfortably perform tasks in front of a chest support of the stool. The armrest assembly can be translated vertically to accommodate the user's body to achieve desired positioning.

A protective pad assembly for removably positioning on an arm or a leg of a user of the protective pad assembly for protecting an elbow or a knee of the user. The protective pad assembly comprises an outer protective unit including a protective cushion pad configured to protect the elbow or the knee of the user from impact, and a self-retaining device mounted to the outer protective unit for retaining the outer protective unit on the arm or leg of the user. The self-retaining device includes a resilient retaining split-ring clamp having two opposite free ends spaced from one another. The free ends of the resilient retaining split-ring clamp are circumferentially expandable or contractable relative to one another for retaining the protective pad on an arm or a leg of the user of the protective pad assembly over one of the elbow and the knee thereof.

The utility model discloses a hybrid-driven five-finger dexterous hand which comprises a palm module, a wrist module and an arm module which are sequentially connected. A finger driving module is arranged on the arm module, and a wrist driving module is arranged below the wrist module; the finger driving module consists of a plurality of groups of tendon rope driving modules; the wrist driving module is driven by a linear module. The tendon rope driving module is adopted to accurately control and adjust multiple degrees of freedom of different joints of multiple fingers on the palm, and the wrist module achieves pitching, swinging and other actions on the wrist through the linear module. Different driving modes are combined, reasonable layout of different driving mechanisms can be achieved in a limited space, and due to the fact that the accuracy requirements of finger and wrist control are different, the mixed driving mode is higher in pertinence.

The invention relates to a mechanical fingerstall based on arm electromyographic signal intelligent control, and belongs to the technical field of medical instruments, the mechanical fingerstall comprises a spliced mechanical glove, the back of the spliced mechanical glove is provided with a touch display screen, and the touch display screen is wirelessly connected with a forearm electromyographic signal collector and an upper arm electromyographic signal collector. The forearm electromyographic signal collector comprises a wearable sensor bracelet main body, an inflatable fixing gasket layer, a flexible electromyographic sensor strip and the like, and is used for collecting and transmitting forearm electromyographic signals. The upper arm electromyographic signal collector is composed of a shoulder fixing sleeve, a signal preprocessing box, an electrode cluster and the like and collects upper arm electromyographic signals. The main control unit box controls the mechanical fingerstall to act through the intelligent control algorithm module according to the received electromyographic signals, and switching from pure upper arm muscle control to double-arm cooperative control can be achieved. According to the mechanical fingerstall, electromyographic signals can be accurately collected, fingerstall actions are intelligently controlled, personalized rehabilitation and data management are provided, and the hand rehabilitation training effect and the life quality of a patient are effectively improved.

The arm brace supports an injured arm during rehabilitation. The arm brace has a wrap member, an arm support member, and an arm sleeve member. The wrap member is secured around a hip and a thigh of a user. The arm support member is secured to a side of the wrap member with couplings including V straps. This configuration provides a platform structure that supports the arm sleeve that partially surrounds and protects the forearm. The arm brace does not require a shoulder strap, a neck strap for support and any other upper body supports. The brace provides a stable support structure that immobilizes the arm regardless of the position of the patient. The hand extends out from a front end of the brace so the user can perform activities such as eating, typing, and grasping.

An apparatus that supports a user in a variety of positions to comfortably perform tasks, such as applying one or more tattoos to skin of a subject is herein disclosed. The apparatus can be reconfigured to optimally position and support the arms and / or chest of the user. A method for using a stool can involve rotating armrests of the apparatus from a stowed position to a deployed position. The armrests can support the user's forearms while supporting the user's chest such that the user can comfortably perform tasks in front of a chest support of the stool.

A hand-manipulated puppet of the type simulating an animal (E.g. a cat) having a head, a body portion with four limbs / arms, and a sleeve is presented. The sleeve is attached to the animal's body portion. The puppet includes a wearable band and / or attire covering a portion of animal's body portion. The puppet include selectively includes pocket(s) on the limbs / arms, and / or the sleeve, and / or the wearable band for receiving stimulants. The pocket(s) are adapted for receiving pouches filled with stimulants. An operator's forearm or a portion of the forearm is laid into the sleeve whereas the palm portion, specifically the five fingers of the operator can get into the animal's body portion and used for selectively manipulate the animal's mouth, and four arms.

The utility model relates to an arm strength exerciser which comprises a spring tube and two grab handles. The bourdon tube is a cylindrical spiral bourdon tube with a certain length and comprises a middle main body part with a larger diameter and two end parts which are positioned at two ends of the middle main body part and have smaller diameters; and the two grab handles are respectively and fixedly sleeved on the two end parts. The main body is the cylindrical spiral bourdon tube, the grab handles are arranged at the two ends of the cylindrical spiral bourdon tube respectively, the two hands grasp the grab handles to elastically bend the bourdon tube during exercise, so that the muscle strength of the arms is exercised, and the bourdon tube has the advantages of being simple in structure and convenient to use.

The invention discloses a full-low-pair compact-structure two-rotation parallel-connection type anthropomorphic wrist, and relates to the technical field of parallel-connection type anthropomorphic joints, the full-low-pair compact-structure two-rotation parallel-connection type anthropomorphic wrist comprises an arm support assembly, two active branches, two passive branches and a palm moving platform assembly, the two driving branches are arranged on the two sides of the arm support assembly respectively, the driven branches are arranged at the end of the arm support assembly, the palm moving platform assembly is used for achieving the motion function of simulating the human wrist, and one end of the arm support assembly is connected with the palm moving platform assembly through the driving branches on the two sides; the other end of the arm support assembly is connected with the palm platform assembly through a passive branch. The mechanical arm has the advantages of being simple in structure, convenient to machine and maintain, small in abrasion, high in precision and the like, and the functions of wrist bending, wrist stretching, wrist adduction and wrist abduction movement of the wrist can be achieved.

According to the various features, characteristics and embodiments of the present invention which will become apparent as the description thereof proceeds, the present invention provides reusable grip enhancing tubular members for the arm area, in particular sports sleeves for the arm and forearm, and reusable grip enhancing tubular members for the hand, in particular sports finger cots for the hand, and the uses thereof, and methods thereof, intended to increase the performance in arm and / or hand task activities.

The utility model discloses a handheld electric welding machine with a protection mechanism, which comprises an anti-scald module. The anti-scalding module comprises an electric welding machine gun, a glove connected with the electric welding machine gun, an arm sleeve connected and communicated with the glove, a hook-and-loop fastener loop face installed on the outer side of the arm sleeve, a bandage fixedly connected to one side of the arm sleeve and a hook-and-loop fastener hook face connected with the top of the bandage, and the hook-and-loop fastener hook face is movably bonded with the hook-and-loop fastener loop face. According to the utility model, a user inserts the hand and the arm into the glove and the arm sleeve, then the binding band is tightened to tighten the outer end of the arm sleeve, then the hook surface of the magic tape is matched with the loop surface of the magic tape to realize the connection of the arm sleeve and the forearm, and then the palm tightly holds a machine gun of an electric welding machine through the glove, so that the welding operation can be carried out, and the hand and the arm of the user are effectively protected.

The utility model relates to a radial artery puncture assist device, which comprises a front arm, a rear arm, a rear arm, an upper arm and a lower arm, the rear arm is detachably connected with the front arm, the interior of the rear arm is semi-arc-shaped, and second supporting wings are arranged on the two sides of the rear arm; the adjusting assembly is arranged at the rear end of the front arm and is clamped with the rear arm to adjust the inclined included angle between the front arm and the rear arm; the binding assembly is arranged at the bottom of the front arm and the bottom of the rear arm and used for binding the arms of a puncture person. The utility model has the beneficial effects that the front arm and the rear arm are detachably connected, so that the front arm and the rear arm can be conveniently assembled in different included angle states so as to be suitable for different persons to use, the front arm and the rear arm can be clamped and fixed through the positioning bolt after adjustment is completed, and relative rotation of the front arm and the rear arm can be effectively limited due to the clamping teeth and the clamping groove after fixation, so that the working efficiency is improved. After being drawn out, the binding belt can be stuck and buckled through the hook-and-loop fastener loop face and the hook-and-loop fastener thorn face of the binding belt, so that the binding effect is achieved, and the arm and the palm are fixed to the front arm and the rear arm respectively.

The invention discloses a seven-degree-of-freedom humanoid mechanical arm which comprises a chest structure, a shoulder joint, a big arm, a small arm and a mechanical hand, the shoulder joint, the big arm, the small arm and the mechanical hand are installed on the two sides of the chest structure and sequentially connected, rope driving mechanisms are arranged on the big arm and the small arm, and the chest structure comprises a chest rack and a joint driver installed on the chest rack. And the joint driver drives the corresponding rope driving mechanism through matched transmission of the flexible shaft and the rope, so that the shoulder joint, the big arm, the small arm and the manipulator are controlled to perform corresponding anthropomorphic arm movement. According to the humanoid mechanical arm, a rotational degree of freedom is additionally arranged at the big arm, all-directional flexible movement is further achieved, more complex actions can be effectively completed, the small arm adopts the double skeleton rods, the load of the humanoid mechanical arm is increased, and the bionic performance of the two humanoid mechanical arms is remarkably improved. And meanwhile, corresponding actuators are arranged for flexible shaft driving and rope driving, and the flexible shaft driving and the rope driving are matched for operation, so that modular layout of a driving system is realized, and the problems of complexity and coupling of a rope driving mechanism are solved.

The invention discloses an SMA-based upper limb exoskeleton rehabilitation robot which comprises a big arm exoskeleton auxiliary block detachably mounted on a big arm, a front arm exoskeleton block detachably mounted on a front arm and a wrist joint exoskeleton frame detachably mounted on a wrist joint, and the front arm exoskeleton block can be rotationally mounted on the big arm exoskeleton auxiliary block in a driven manner; an upper SMA tractor used for driving the forearm exoskeleton block to rotate is arranged on the big arm exoskeleton auxiliary block, and a lower SMA tractor used for enabling the wrist to move up and down is arranged on the forearm exoskeleton block. When the upper SMA tractor is heated to a certain temperature, the upper SMA tractor begins to contract, the forearm exoskeleton block is dragged in the contraction process, the forearm exoskeleton block rotates on the big arm exoskeleton auxiliary block, the forearm of the human body is driven to swing, meanwhile, the lower SMA tractor is heated, and when the lower SMA tractor is heated to a certain temperature, the lower SMA tractor begins to contract, and the forearm exoskeleton block rotates on the big arm exoskeleton auxiliary block and drives the forearm of the human body to swing. In the contraction process, the hand is dragged, the hand moves up and down, and the auxiliary effect on arm and hand rehabilitation is achieved.

The present invention discloses an auxiliary positioning device for shoulder joint image scanning, comprising a hand rest seat, an inflatable cushion, a gripping piece and an elastic squeezing ball, wherein the hand rest seat has a bracket suitable for accommodating an upper limb; the inflatable cushion is arranged in the bracket to support the patient's upper limb and adjust the height position of the upper limb; the gripping piece is arranged at one end of the hand rest seat, and the height position of the gripping piece in the up and down directions is adjustable, so that the patient's palm can be held in an externally rotated position; the elastic squeezing ball is connected to the inflatable cushion through an air tube, so as to inflate and deflate the inflatable cushion. The auxiliary positioning device for shoulder joint image scanning according to the present invention effectively solves the problem that it is difficult for patients to accurately place and maintain the arm position during shoulder joint examination through the hand rest seat, the inflatable cushion, the gripping piece and the elastic squeezing ball, and can improve the quality of scanned images.

A shoulder-immoblizing apparatus includes a forearm sling. The forearm sling is configured to receive an elbow, forearm and wrist of a first arm of a user and includes a first fastener configured for fastening a posterior strap to a proximal portion adjacent to the elbow, a second fastener configured for fastening an anterior strap to a distal portion adjacent to the wrist, and a contralateral strap holder. The contralateral strap holder includes a circumferential shoulder strap configured to wrap around a shoulder of a second arm of the user to form a substantially ellipsoid opening that seats against a pectoral region, a scapular region and one of an underarm region or a lateral outside portion of the shoulder of the user's second arm. The posterior and anterior straps each have swivel fasteners rotatably coupled to respective posterior and anterior portions of the circumferential shoulder strap. Related methods are also provided.