160results about How to "Small size when folded" patented technology

The invention discloses a large spatial assembly type antenna reflector modular unit and an assembly method thereof. The modular unit comprises a hexagonal extensible truss, a reflecting rope net and a rope connecting device, wherein the hexagonal extensible truss comprises top hinges, a synchronous power hinge, annular rods, and middle slanting poles; two annular rods with the same length form asynchronous folding rod through the synchronous power hinge, and the synchronous power hinge is connected with two middle slanting poles through three top hinges to form a planar triangle structural unit; 12 planar triangle structural units are connected with one another by sharing the middle slanting poles and the top hinges to form a ring, namely the truss of the antenna reflector modular unit;during connection, synchronous folding rods of two adjacent triangle structural units are spatially staggered with each other, and two layers of hexagons with different sizes and staggered vertexes are formed spatially; the reflecting rope net comprises a metal net for reflecting electromagnetic waves and an adjusting rope for adjusting the shape surface of the metal net; the metal net is sewed on the adjusting rope which is fixed with the truss of the modular unit through the top hinges; and the rope connecting device is mainly used for connecting and fixing the reflecting rope net and the hexagonal extensible truss.

The present invention relates to one kind of inflating expanded truss for outer space use. The inflating expanded truss includes at least three inflating expanded pipes and several thermosetting support rods. Each of the inflating expanded pipes consists of one inner lining layer and one outer thermosetting layer. Each of the thermosetting support rods is connected between two inflating expanded pipes. After being launched to preset space orbit, the inflating expanded pipes are inflated and the truss structure is expanded to fixed shape and hot cured via absorbing sun radiation, so as to obtain designed rigid truss. The present invention needs no outer space assembling and has the advantages of small folded volume, high expanding reliability, light weight, etc and thus wide aeronautic and astronautic application foreground.

The invention discloses a satellite-borne deployable mesh antenna. The satellite-borne deployable mesh antenna comprises an antenna reflecting surface extending arm (1), an antenna reflecting surfacedeployable supporting assembly (2) and a cable net structure (3). The antenna reflecting surface extending arm adopts a carbon fiber composite material hollow round rod design, so that the weight of the extending arm and the in-orbit thermal deformation of the extending arm are reduced, and the antenna pointing accuracy is ensured. The antenna reflecting surface deployable supporting assembly (2)is composed of module units, can be increased or decreased according to the aperture requirement of the antenna reflecting surface, and is high in expandability. The cable net structure is designed ina multi-layer cable net mode, ground adjustment of the profile precision of the reflecting surface is achieved, and the requirement of microwave antenna detection for the profile precision of the reflecting surface is met. According to the invention, factors such as antenna emission folding and in-orbit unfolding, antenna reflecting surface function and performance testing and antenna reflectingsurface profile precision adjusting are comprehensively considered for design, and the requirement of satellite in-orbit ground detection can be met.

The invention discloses a folding skateboard bag which is a complementing type transportation tool, wherein the folding skateboard bag comprises a folding pedal, a case, rolling wheels, a guide mechanism, a brake system, a motor, a battery and a motor control system. The folding skateboard bag integrates portability, passing ability and economy, the case is designed into a commuting tool which is low in weight, high in strength, and capable of being folded easily, being carried indoors and into other transportation tools, the seamless combination of individual slow traffic, public transport and a destination is achieved, a user can go out flexibly, and the problem of a last mile is solved.

A pod-shaped support rod throw-away deployment mechanism includes a roller assembly, a frame, a deployment drive device, guide devices, a plurality of groups of throw-away devices and thrust devices.The roller assembly, the deployment drive device and the guide devices are sequentially arranged on the frame. The plurality of groups of throw-away devices are sequentially slidably connected to theguide devices. The thrust devices are mounted on the frame. A pod-shaped support rod is wound on the roller assembly. The deployment drive device drives the pod-shaped support rod to extend to the outer side of the frame. When the throw-away devices are squeezed by the guide devices, the throw-away devices reach the face of the pod-shaped support rod. When the pod-shaped support rod is moved froma predetermined specific position to below the throw-away devices, the throw-away devices are locked to the pod-shaped support rod and moves with the pod-shaped support rod to the outer side of the frame until the throw-away devices are detached from the frame. Through the plurality of groups of throw-away devices and the pod-shaped supporting rod, the pod-shaped supporting rod can have a multi-point connection capability.

The invention discloses a fracture patient rescue robot which is composed of a vehicle body and an actuating mechanism. The actuating mechanism comprises a lifting mechanism, a sliding stretcher and two operating arms of six degrees of freedom. The sliding stretcher has an upper layer and a lower layer, the lower layer is a protective shell and the upper layer is a belt drive device. The lifting mechanism is composed of a vehicle body telescopic connecting bar fixed with the vehicle body, a stretcher connecting bar fixed with a lower layer movable stretcher and a telescopic bar. One end of the vehicle body telescopic connecting bar is movably connected with one end of the stretcher connecting bar, both ends of the telescopic bar are respectively connected with the lower layer movable stretcher and the vehicle body, and the vehicle body telescopic connecting bar and the telescopic bar are respectively driven by a worm and gear. The two operating arms of six degrees of freedom are installed symmetrically at the front portion of the sliding stretcher. According to the sliding stretcher, full consideration is given to human body structure and injury particularity, the operational process of the double-position automatic registration and fusion scanning board meets standards of human body first-aid operations, and damage to the human body in an operational process is reduced to the maximum extent.

The invention discloses a passive off-orbit cubic satellite, belongs to the technical field of near-earth orbit separation. The passive off-orbit cubic satellite solves the off-orbit problem of a near-earth orbit, and comprises an inflatable resistance-increasing ball; a polyimide film material with the thickness of less than or equal to 5 microns is adopted as a ball skin of the inflatable resistance-increasing ball; the inflatable resistance-increasing ball which is is deflated and folded is sealed in a cubic box, one end surface of the cube box is provided with a hinged box cover, and the hinged box cover is locked through a initiating explosive bolt. The passive off-orbit cubic satellite is applied to near-earth orbit separation.

The invention discloses a lower linkage folding joint for a linkage folding stroller. The lower linkage folding joint comprises a front connecting piece and a rear connecting piece, and a lower connecting piece is arranged between the front connecting piece and the rear connecting piece. A front connecting piece groove is formed in the side, facing the lower connecting piece, of the front connecting piece, and a front connecting piece sliding block capable of sliding in the front connecting piece groove is arranged in the front connecting piece groove. A front elastic piece is arranged between the front connecting piece sliding block and the front connecting piece, and a front inclined push protrusion is arranged on the side, facing the lower connecting piece, of the front connecting piece sliding block. A rear connecting piece groove is formed in the side, facing the lower connecting piece, of the rear connecting piece, a rear connecting piece sliding block capable of sliding in the rear connecting piece groove is arranged in the rear connecting piece groove, and a rear elastic piece is arranged between the rear connecting piece sliding block and the rear connecting piece. A rear inclined push protrusion is arranged on the side, facing the lower connecting piece, of the rear connecting piece sliding block. A lower connecting piece center hole is formed in the middle of the lower connecting piece, a clamping hole is formed in one side of the lower connecting piece center hole, and a rotating block capable of rotating in the lower connecting piece center hole is arranged in the lower connecting piece center hole. The two sides of the rotating block are each provided with an inclined push structure, and a lower pull rope is connected to the rotating block.

The invention discloses a baby carriage. The baby carriage comprises first support legs and second support legs connected with wheels, wherein the first support legs are provided with a transverse shaft, the transverse shaft is connected with first rotating sleeves capable of rotating relative to the transverse shaft, the transverse shaft is also connected with second rotating sleeves capable of rotating relative to the transverse shaft only after the first rotating sleeves rotate, the lower ends of the second rotating sleeves are connected with the second support legs, a locking device capable of preventing each first rotating sleeve from rotating is arranged between each first rotating sleeve and the transverse shaft, the upper ends of the first rotating sleeves are connected with support rods capable of rotating along with the first rotating sleeves, hand push rods capable of sliding up and down in the support rods and capable of driving the locking devices to be unlocked after sliding down are arranged in the support rods, and a latching device for latching each hand push rod and each support rod is arranged between each hand push rod and each support rod. The baby carriage disclosed by the invention is simple in structure and convenient to operate and has a small volume after being folded.

The invention discloses a stroller frame. The stroller frame comprises a forefoot, a rear foot, a base plate, a side handle and a connecting pipe, and further comprises a handlebar and a canopy folding mechanism, wherein the handlebar is sleeved with the connecting pipe in a sliding manner, and the end part of the handlebar is supported on the rear foot of the frame in a clamped manner; the canopy folding mechanism is arranged on the handlebar in a sliding manner; and beside, one end of the connecting pipe is pivotally connected with the side handle, and the other end is pivotally connected with the base plate and the rear foot. The canopy folding mechanism of the stroller frame provided by the invention can slide to match with the downward sliding of the cart handle, so that after being folded, the frame is more compact in structure, space-saving and portable, and can reduce folding size.

The invention discloses a flexible solar wing unfolding mechanism with a high unfolding-folding ratio. The flexible solar wing unfolding mechanism comprises a bottom plate, a shear fork rod assembly, a top plate and a solar blanket assembly; the unfolding mechanism further comprises a driving assembly integrated on the bottom plate; the driving assembly is provided with a driving motor and a transmission gear, and the transmission gear extends to the upper part of the bottom plate; and the driving assembly is in transmission connection with the shear fork rod assembly through the transmission gear and drives the shear fork rod assembly to be unfolded so as to drive the solar blanket assembly to be unfolded. The unfolding mechanism is simple in structure, high in reliability and small in mass; most structural parts in the mechanism are made of spaceflight-grade hard aluminum alloy and carbon fiber composite materials, the mechanical structure is simple and not numerous and jumbled, and the structural parts are subjected to lightweight design improvement on the premise that the strength and vibration requirements are guaranteed; and the unfolding mechanism is low in manufacturing cost and material price, structural parts are simple in structure and convenient to manufacture, the shear fork rod assembly drives the solar blanket assembly to move, and the unfolding mechanism has the advantages of being light in weight, small in folding size, large in unfolding span and high in unfolding and folding ratio.

The invention discloses a wing folding structure which comprises a wing platform, a rotating assembly, a wing assembly, a driving assembly and a limiting assembly, the rotating assembly comprises a first rotating shaft and a second rotating shaft which are rotationally connected with the wing platform, and the wing assembly comprises a left wing and a right wing; the left wing is fixedly connected with the first rotating shaft, and the right wing is fixedly connected with the second rotating shaft; the wing assembly has a folded state and an unfolded state; the limiting assembly is arranged on the wing platform and movably connected with the rotating assembly, so that the rotating assembly is limited to be fixed when the limiting assembly is effective, and the wing assembly is in the folded state; the driving assembly is in transmission connection with the rotating assembly so as to drive the rotating assembly to rotate when the limiting assembly fails, and then the wing assembly is converted into the unfolded state from the folded state. On the premise that the folding size is small, the functions of eliminating the height difference after the wings are unfolded and having the dihedral angle are achieved, and an aircraft has better aerodynamic performance while being convenient to store and transport.

The invention belongs to the technical field of baby strollers, and discloses a baby stroller and a seat pocket thereof. The seat pocket of the baby stroller comprises a seat, a backrest, an armrest assembly and connecting rods. The backrest and the armrest assembly are arranged on the seat in a pin connection manner, the seat is connected with a frame of the baby stroller and is in pin connection with the backrest by first pin connection shafts, one end of each connecting rod is in pin connection with the backrest by second pin connection shafts, and the other end of each connecting rod is in pin connection with the armrest assembly by third pin connection shafts; the second pin connection shafts are positioned on the rear lower sides of connection lines of the third pin connection shafts and the first pin connection shafts when the seat pocket of the baby stroller is in a lying posture; the second pin connection shafts are positioned on the rear upper sides of the connection lines of the third pin connection shafts and the first pin connection shafts when the seat pocket of the baby stroller is in a sitting posture state. The seat pocket and the baby stroller with the structures have the advantages that the seat pocket in the sitting posture state and a lying posture state can be effectively changed, and change operation is simple; the integral seat pocket can be folded as needed, and accordingly the baby stroller is small in folded volume.

The invention discloses a baby stroller, which comprises a stroller frame, front wheel assemblies, back wheel assemblies and a locking device, wherein the stroller frame has a unfolding state and a folding state, the locking device is used for locking the stroller frame in the unfolding state, and particularly, the stroller frame comprises bottom rods, back support rods and push rods; each bottom rod extends in the fore-and-aft direction, the lower part of each back support rod is rotationally connected with the back end part of the corresponding bottom rod, the bottom of each push rod is rotationally connected with the upper end part of the corresponding back support rod, the front wheel assemblies and the back wheel assemblies are respectively and rotationally connected with the front end parts and the back end parts of the bottom rods, the locking device comprises a first locking unit, during unfolding, the back support rods and the back wheel assemblies are in locked connection through the first locking unit, and during folding, the back support rods and the back wheel assemblies are unlocked for separation. The baby stroller provided by the invention has the advantages that wheels can be retracted and gathered between the bottom rods arranged at two sides while the stroller frame is folded, the size after the folding is small, the occupied space is small, meanwhile, the structure is simple, and the operation is convenient.

The invention discloses an adjustable extensible stool, comprising a seat, a base, an extension structure connected between the seat and the base, and a spring connected between the seat and the base.The extension structure includes a plurality of rings having diameters which increase sequentially from top to bottom, wherein the extension structure includes the front end of the front ring is connected with the seat, the outer side of the rear end of the front ring is peripherally and evenly provided with a plurality of positioning blocks, the rear end of the tail ring is connected with the base, the tail ring is peripherally and evenly provided with a plurality of slide grooves, the other rings are peripherally and evenly provided with a plurality of slide grooves, the outer side of the rear end of the other rings is peripherally and evenly provided with a plurality of positioning blocks, the slide grooves are arranged axially along the rings, the front end of each slide groove is provided with a positioning groove, the positioning blocks of one ring are slidably arranged in the slide grooves the ring behind, and the rings are in sleeving connection sequentially from top to bottom.