42results about How to "Folded size is small" patented technology

A bed foundation comprises a first frame body and a second frame body. The first frame body and the second frame body are connected pivotally by a middle foot stand, and two lateral foot stands are pivotally disposed under the first frame body and the second frame body. Supporting bars are disposed between the middle foot stand and the two foot lateral stands. Thereby, the bed foundation of the present invention can be folded away for convenient transporting and the smaller folded size is convenient for carrying into a house for assembling.

The invention provides a satellite-based helical antenna. The antenna comprises a baffle board, an insulating board, a base, a helical antenna body and a protective cover. The baffle board, the base and the insulating board are fixed through screws. The insulating board is pressed between the baffle board and the base. The baffle board, the base and the insulating board are fixed as a whole. The lower end of a helical antenna body is fixed on the insulating board and the upper end thereof is fixed in the protective cover. When the helical antenna body is compressed to the greatest extent, the protective cover fully covers the base and the helical antenna body and is connected and fixed with the base through the screw. The helical antenna can be folded into a small size and has high compression ratio, the compressed antenna is convenient to store and install, has strong strength, and can bear large impact load; and the compressed antenna has no irreversible deformation, and can rapidly recover to the virgin state after being released.

The invention discloses a stretching mechanism-supported double-side array large-area flexible solar cell wing. The stretching mechanism-supported double-side array large-area flexible solar cell wingcomprises a lifting mechanism, a stretching mechanism, two flexible solar cell arrays, pressing and releasing devices and box body unfolding and locking mechanisms; two ends of the top of the stretching mechanism are respectively connected with the two flexible solar cell arrays, and the bottom of the stretching mechanism is connected with the lifting mechanism; in an initial state, the two flexible solar cell arrays are symmetrical about the stretching mechanism; the stretching mechanism and the flexible solar cell array are each provided with a plurality of pressing points; and the pressingand release devices are arranged at the positions of the corresponding pressing points to press the stretching mechanism and the flexible solar cell arrays; the box body unfolding locking mechanismsare arranged at the connecting positions of the two ends of the top of the stretching mechanism and the first flexible solar cell array and the second flexible solar cell array and are used for unfolding the flexible solar cell arrays towards two sides in place and locking the flexible solar cell arrays. The stretching mechanism-supported double-side array large-area flexible solar cell wing has the advantages of small folding envelope, large unfolding area and stable unfolding configuration, and is suitable for a high-power spacecraft platform.

The invention relates to a transmission unit with a planetary gearing system, optionally for bicycles or for trailer bicycles. The transmission unit, which is developed for driving small rear wheels, contains a planetary gearing system with a ring gear (7) which is connected to the bicycle frame (9), a planet carrier (3b) with planet gears (6a, 6b), and one or two sun gears (10, 11). The transmission unit further contains a rear wheel shaft (12) which is coaxial with respect to the sun gears or a rear wheel shaft which has the aforementioned sun gear, and the transmission unit contains a driving mechanism (3) which is coupled to the planet carrier or a driving mechanism (3) which is designed as a planet carrier (3b). The invention is characterized in that a bearing (35) internally bears the rear wheel shaft (12) with respect to the bicycle frame (9) from a radial perspective and between the seat of the rear wheel (40) and the planetary gearing system from an axial perspective, wherein the planetary gearing system and an upstream gear unit, for example a chain drive (1, 2), lie on the same side of the bicycle frame. Thus, upstream belt drives, short distances between the rear wheel and the bottom bracket, and single-arm suspensions in the bicycle frame can be implemented. The transmission unit provides one or two gear ratios.

The present invention discloses a foldable stroller, comprising: a front wheel support frame, a rear wheel support frame, a seat support and push rods, the lower end of the front wheel support frame is provided with front wheel assemblies, and rear wheel assemblies are arranged at the lower end of the rear wheel support frame, the push rods each are connected to the front wheel support frame and the rear wheel support frame with pivot assemblies, the foldable stroller comprises not only a first folding structure that is connected with the pivot assemblies and capable of folding the push rods, but also a second folding structure capable of folding the front wheel support frame and the rear wheel support frame. The present invention has the advantages of simple structure, low cost, convenient assembly, smooth and easy folding, small folding size and convenient collection.

The invention discloses a light vehicle and a folding mechanism thereof. The light vehicle comprises push handle upper tubes, push handle lower tubes, push handle seats, side handrails, swinging rods, rear wheel brackets, rear wheel seats and front wheel brackets, which are symmetrically arranged on the left and right sides, wherein the swinging rods, the side handrails, the rear wheel brackets and the push handle seats form four-point mechanisms; swinging rod mechanism consisting of the front wheel brackets and lower swinging rods mutually form a folding mechanism; the swinging rods are connected with the rear wheel brackets through small connecting rods; and the small connecting rods can drive sliding connecting rods, which are arranged on the rear wheel brackets in a sliding way, to move and drive the rear wheel brackets to be folded. The invention is advantaged in that the whole frame are folded under the driving of the four-point mechanisms, which include the swinging rods, the side handrails, the rear wheel brackets and the push handle seats, and the swinging rod mechanisms, which include the front wheel brackets and the lower swinging rods; rear wheels of the vehicle are folded inwards during folding; the folding process is convenient and can be operated by single hand; the folding dimension is reduced; and the folded vehicle can also self-stand so that the folded vehicle is convenient to store and the storage space is saved.

The invention discloses a child non-standard balloon dilating catheter, and belongs to the field of medical instruments. The child non-standard balloon dilating catheter comprises an outer tube, a balloon, an inner tube and a connector, the balloon is a sectional tubular cavity and provided with a far-end portion, a middle-end portion and a near-end portion, the cross sections of the far-end portion, the middle-end portion and the near-end portion are elliptical, the middle-end portion can be expanded to reach a dilating diameter larger than the far-end portion, the near-end portion can be expanded to reach a dilating diameter larger than the middle-end portion, the far-end portion, the middle-end portion and the near-end portion of the balloon are provided with tapered transition structures, and the diameters of the tapered transition structures are gradually increased from the far end to the near end of the balloon. The child non-standard balloon dilating catheter has the advantagesthat lesion vessels can be progressively increased from small diameters to large diameters to realize sequential expansion of the balloon dilating catheter, the risk of vascular rupture can be decreased, the balloon dilating catheter can be closely fitted with the vessels in a dilating surgery, and surgical safety and stability are ensured.

A notebook computer includes a connecting portion, a first display screen portion, a hinge structure and a computer mainframe. The first display screen portion has a first display surface. The hinge structure is pivotally connected to the connecting portion and the first display screen portion, respectively. The computer mainframe is slidably disposed on the connecting portion. The computer mainframe is slidable relative to the first display screen portion for alternatively changing arrangement orientations of the computer mainframe relative to the first display screen portion.

The invention relates to a modular large-array surface radar antenna mechanism. The modular large-array surface radar antenna mechanism comprises a first longitudinal rod and two second longitudinal rods, wherein a lead screw driving mechanism is arranged on the first longitudinal rod, the two second longitudinal rods are symmetrically arranged at two sides of the first longitudinal rod and are connected with the lead screw driving mechanism via a first connection rod, the first longitudinal rod is connected with the first connection rod via a second connection rod, and a plurality of oscillators are arranged on both of the first longitudinal rod and the two second longitudinal rods. In the antenna mechanism, by combination of the lead screw driving mechanism, the first connection rod andthe second connection rod, folding and unfolding of the antenna mechanism can be achieved, the antenna mechanism has the characteristics of large unfolding size and small folding size, the large powerrequirement of radar when the antenna mechanism is unfolded can be met, the requirement on high maneuverability and transportation performance of the radar when the antenna mechanism is folded is met, meanwhile, an antenna array surface with a relatively large size can be formed by combining a plurality of antenna mechanisms.

The invention discloses an electric scooter. The scooter comprises a front fork, a front pedal and a rear pedal, a driving wheel is mounted on the rear pedal; a front wheel is movably mounted betweenthe front forks; the front pedal and the rear pedal are connected through a hinge. The top of the front fork extends out of the interior of the front end of the front pedal; the hinge pin is movably connected to the lower end of the head pipe; wherein the lower end of the head pipe is in threaded connection with a locking nut through threads on the head pipe, the lower end of the head pipe is sleeved with a sleeve, the front side of the lower end of the head pipe is provided with a preformed hole for installing a dragging wheel shaft, the dragging wheel shaft is movably connected with a frontdragging wheel and a rear dragging wheel, and the front side of the lower end of the sleeve is provided with a notch for reserving space for installing the dragging wheel shaft. On the premise that folding strength and convenience in use are guaranteed, the two dragging wheels are added, so that a user can stand up and drag under the supporting action of the dragging wheels and the front wheels after folding; compared with a traditional scooter, the electric scooter is small in size after being folded.

The invention discloses a self-balancing walking aid capable of going up and down stairs. The self-balancing walking aid comprises two handrails in opposite arrangement, an adjusting support and an assistant supporting device, two ends of each handrail are connected with the adjusting support which comprises a front supporting tube and a rear supporting tube, positioning holes in axial distribution are formed in each of the front supporting tube and the rear supporting tube, the front supporting tube and the rear supporting tube are connected through a lateral connection rod, an antiskid tubesleeve is arranged at the bottom of each of the front supporting tube and the rear supporting tube, a transverse connection rod is arranged at the front end of each handrail, and a front connection rod is hinged between the front supporting tube; the assistant supporting device comprises a micro motor, an electric extensible rod, a detector, a control processor and a power supply device. The micromotor is controlled through the control processor to enable the electric extensible rod to extend to a corresponding position so as to enable the two handrails of the walking aid to maintain parallelto realize stable going upstairs or going downstairs. The self-balancing walking aid is high in universality, safe, practical and suitable for popularization and use.

The invention relates to a compact, foldable bike with small wheels and a bicycle drive for driving the rear wheel, comprising a traction mechanism or a spur-gear transmission, driven by a crank, the distance of the bottom-bracket axle to the rear-wheel axle being larger than half the outer diameter of the rear wheel. The bicycle exhibits a front frame part and a rear frame part that are rotatably connected to each other by a folding hinge that is aligned at right angles to the ground plane, whereby the front frame part, the rear frame part, and a front-wheel fork, in the folded state, seen laterally, form the sides of a triangle having the following characteristic combination of features: The bicycle is ridden while standing up, the driving wheel and the output wheel of the bicycle drive are arranged on the same side of the bicycle frame and the steering tube exhibits a lower and an upper steering tube, that in the folded state of the bicycle are folded-in laterally beside the front wheel. With this combination of features, a particularly compact folding size is achieved for the folding bicycle.

The invention discloses an intelligent operation video acquisition system. According to the invention, a position-adjustable display and a lifting stand column are designed on a base; a mechanical arm with three horizontally-rotating joints is installed at the top end of the lifting stand column; a video acquisition camera is mounted on the mechanical arm; and the video acquisition camera is provided with a target identification camera. Meanwhile, a handheld target is designed, a laser designator is installed in the target, and the laser designator emits laser to irradiate an operation area through an opening in the bottom end of the target in the axial direction of the target; and infrared LEDs are installed on the top face of the target in a circumferential direction. Therefore, the infrared LED is identified through the target identification camera, the spatial position and posture information of the target is obtained, all the joints of the horizontal mechanical arm are controlled to rotate according to the information, and the video acquisition camera is made to reach a designated posture, so the video acquisition camera is made to face a surgical site all the time in a shooting period. The problems that an existing operation video acquisition system is time-consuming and labor-consuming in installation and deployment, not ideal in shooting visual angle, poor in video quality, low in intelligent degree and the like are solved.

The invention discloses a single-drive dual-parallelogram hoisting mechanism which comprises a fixed base, a lower parallelogram assembly, an upper parallelogram assembly and a coupling mechanism assembly. The single-drive dual-parallelogram hoisting mechanism is used for hoisting examining equipment for the inner wall of a top cover of a reactor pressure vessel of a nuclear power station. The single-drive dual-parallelogram hoisting mechanism can vertically hoist a hoisting platform through the lower parallelogram assembly and the upper parallelogram assembly which are coupled together, avoids horizontal movement and prevents penetrating parts of the top cover from being damaged by the examining equipment. The single-drive dual-parallelogram hoisting mechanism is small in folded size and large in hoisting range, and workers and equipment can conveniently enter and exit through a biosphere man hole. By means of dual-parallelogram restrained-coupling single-drive control, moving shafts of equipment are reduced, the equipment is simpler to control, and the size and the weight of the equipment are reduced.

The invention provides a sports hurdle frame. The sports hurdle frame comprises a cross rod, connecting pieces, supporting pieces, stabilizing pieces and bearings. All the rods can be folded; the connecting pieces enable sleeve rods and fixing rods to be connected in a rotating mode. When a student hurdles a hurdle, the cross rod is touched; the cross rod can rotate along the force direction, so that the student is prevented from being stumbled; the problem that the joint is easy to break in the prior art is solved; the spring specially designed in the connecting piece can be used for limitingthe rotating angle, so the corner of the cross rod is prevented from being overlarge; the height of the hurdle is adjustable through cooperation of a gear and a rack, a matched ruler can be adjustedaccording to students of different ages or heights, the length is adjustable through cooperation of the sleeve rod and the sliding rod, the requirements of students of different ages are also met, andthe folding size can be smaller.

A folding bedstead and a folding bed comprising same. The folding bedstead comprises a bed surface support frame and a support leg frame. The bed surface support frame comprises intermediate connecting pieces and support units symmetrically arranged at two ends of the intermediate connecting pieces. Each support unit comprises straight connecting tubes pivoted to the intermediate connecting pieces and a U-shaped bed frame tube pivoted at outer ends of the straight connecting tubes. The bed surface support frame is a closed planar frame in an unfolded state. The leg support frame comprises an intermediate leg frame, lateral leg frames, and outer leg frames, wherein the intermediate leg frame is arranged on the intermediate connecting pieces, the lateral leg frames are arranged on the straight connecting tubes in a folding manner, and the outer leg frames are arranged on the U-shaped bed frame tubes in a folding manner.