7results about How to "High storage ratio" patented technology

The invention relates to the technical field of medical instruments, in particular to a nerve stimulation electrode based on a shape memory material. The nerve stimulation electrode comprises a flexible packaging electrode body and a substrate crease layer arranged on the surface of the flexible packaging electrode body. The material of the substrate crease layer comprises a shape memory polymer and a nano ferromagnetic material; the substrate crease layer comprises a first bending part which is used for enabling the flexible packaging electrode body to be folded along the length direction of the flexible packaging electrode body. The nerve stimulation electrode can solve the problems that an existing nerve stimulation electrode is hard in appearance, large in overall mass, poor in flexibility and complex in implantation operation.

The invention relates to the field of satellite energy subsystems, and provides a winding type modular flexible solar wing substrate and a preparation technology thereof.The winding type modular flexible solar wing substrate comprises a flexible circuit board module, a fiber grid panel, a hanging connector and a foam board; the flexible circuit board module is adhered to one surface of the fiber grid panel, the foam board is adhered to the other surface of the fiber grid panel and extends along the length direction of the fiber grid panel, and the plurality of hanging interfaces are adhered to two sides of the width direction of the fiber grid panel. The bending radius of the base plate can be smaller than 50 mm, the buffer effect can be achieved in the folded state, mechanical damage to the battery piece caused by vibration in the satellite launching stage is weakened, and the base plate has the advantages of being high in flexibility, small in thickness, large in size, excellent in mechanical property and resistant to cold and hot temperature impact.

A satellite-borne retractable helical antenna structure comprises a grounding plate and a helical main body, the axis of the helical main body is vertically and fixedly arranged on the upper surface of the grounding plate, and a plurality of flexible helical geometric holding members are circumferentially and spirally arranged between two adjacent ring layers of the helical main body; the device further comprises an unlocking releasing mechanism arranged on the upper surface of the grounding plate in the spiral main body, and at least three inhaul cables are connected between the unlocking releasing mechanism and the top ring of the spiral main body to fold and fix the spiral main body. Through reasonable design and arrangement of the spiral main body and the structures of all parts, the spiral antenna has a large storage ratio, effectively reduces the emission space occupied by the antenna, enables the spiral main body ring layers to have structural continuity in cooperation with the flexible spiral geometric holding member, improves the structural rigidity of the spiral antenna, guarantees the spiral size precision after unfolding, and improves the antenna performance. The on-orbit electrical performance index of the antenna can be ensured to be met; the overall structure is easy to implement, the on-orbit unfolding function of the satellite-borne helical antenna is achieved, the overall structure has high rigidity, only a small number of matched devices are needed, the mass of the overall helical antenna can be reduced, and the reliability of the folding and unfolding function is improved.

The application belongs to the technical field of solar sail and is specifically a heat-driven liquid crystal solar sail unfolding device. The liquid crystal solar sail unfolding device is composed of liquid crystal elastomers as a framework adhered to a solar sail film. The shape of the solar sail film includes a large equilateral triangle and three small squares outside the equilateral triangle, and each square film is symmetrically arranged with the triangular film. The liquid crystal elastomer is in the shape of a strip and is a double-layer film structure printed by a direct writing 3D printer. The bottom layer is horizontally printed, and the upper layer is vertically printed. When the temperature changes, the thermal expansion coefficients of the double-layer film are different, and the overall produces bending deformation. The application can achieve graded regulation of the unfolding degree by different temperatures to meet different requirements. Under the premise of realizing the intelligent storage and unfolding functions, the application has a high storage ratio. The structure is flexible and controllable, and the unfolding and contraction of a certain sail surface can be controlled to adjust the overall attitude and forward direction.

According to the space-based oversize three-dimensional multi-unfolding film light shield, the bottom face of a circumferential unfolding mechanism is connected with a bottom plate of a light shield cabin, the tail ends of sleeves are connected with longitudinal stretching arm assemblies and the cabin wall of the light shield cabin at the same time, and each sleeve is connected with one longitudinal stretching arm assembly. A pressing assembly capable of being controlled to be unlocked is arranged at the joint of the sleeve and the bulkhead. A set of rib assembly is connected between the two sets of longitudinal extending arm assemblies through flanges. The longitudinal extension arm assembly is connected with the cabin wall of the light shield cabin through a pressing assembly, the rib assembly is connected with the bottom plate of the light shield cabin through a pressing assembly, and unlocking can be achieved according to signals. The longitudinal stretching arm assemblies are divided into three types, and each type comprises two groups. The rib assemblies are divided into four types, totally 16 groups. Cavities are formed in the second-layer ribs and the third-layer ribs. The first layer of ribs is further provided with a bottom layer cavity besides the inner cavity. And the circumferential expandable film can be folded into the bottom layer cavity of the first layer of rib assembly. The hexagonal prism film can be folded into the first layer of cavity of the rib assembly. The beveled hexagonal prism films can be folded into the second-layer cavity and the third-layer cavity of the rib assembly.

The present invention discloses a locking three-fold radiating rib umbrella-shaped antenna synchronous unfolding mechanism, comprising a central hub, two sides of the central hub are fixedly connected to a scroll spring mechanism through a support, one end of a cam is coaxially fixedly connected to the central axis of the scroll spring mechanism, the other end of the cam is connected to one end of a radiating rib, and the radiating rib rotates with the rotation of the cam; the other end of the radiating rib is a pointed section, the root of the pointed section is fixedly connected to one end of a pointed rib unfolding cable, the other end of the pointed rib unfolding cable is wound on the synchronous mechanism, the synchronous mechanism is connected to the central hub through an axis, one end of a root rib unfolding cable is connected to the cam, the other end of the root rib unfolding cable is wound on the synchronous mechanism, the radiating rib is divided into three sections, connected by a connecting part, and the connecting part is connected to a locking mechanism. The present invention adopts a three-fold radiating rib design, the radiating rib is divided into a root rib, an intermediate rib, and a pointed rib, while ensuring a larger caliber, it meets a smaller folding space and has a higher storage ratio.

The application provides a high-utilization large-aperture optical mirror unfolding device, which comprises an inner mirror, an outer mirror, a hinge mechanism and a supporting rod, the inner mirror and the outer mirror are connected through the supporting rod; the outer mirror comprises a plurality of sub-lenses, any two adjacent sub-lenses are connected through the hinge mechanism; the outer mirror comprises a folding state and an unfolding state, the hinge mechanism is further used for switching the outer mirror between the folding state and the unfolding state; when the outer mirror is in the folding state, the outer mirror is located below the inner mirror; when the outer mirror is in the unfolding state, the plurality of sub-lenses are uniformly distributed in a circumferential direction along the outer side of the inner mirror. The inner mirror and the outer mirror are used in cooperation, the hinge mechanism is used for switching the outer mirror between the folding state and the unfolding state, the supporting rod is used for rigidly connecting the inner mirror and the outer mirror, which is helpful to improve the reliability of the whole device, through reasonable space layout, the synchronous, controllable and orderly unfolding of the inner and outer mirrors in orbit is realized, which is helpful to improve the space utilization and the storage ratio.