2025results about How to "Small structure size" patented technology

An apparatus having an optical structure, ridges and an electrostatic actuator with a cantilever electrode is described, wherein the ridges connect the optical structure to a supporting structure and the electrostatic drive is implemented to deflect the optical structure.

Device and method for generating brief strong current pulses in a coil for generating magnetic field pulses which according to the electromagnetic induction principle induce stimulation currents in the body tissue triggering an action potential of the nerve and / or muscle cells, where the coil is positionable close to the body tissue to be stimulated so that its magnetic field passes through the body tissue, and where the device comprises a power generating unit that can generate a freely selectable temporal course of the current through the coil during the current pulse. A method for determining an optimized temporal course of a brief strong current pulse through the coil, where the temporal course of the current pulse is calculated using a method which numerically simulates the electrical behavior of nerve and / or muscle cells and the coil and optimizes the course of the current pulse regarding at least one parameter, or which by means of stimulating the nerve and / or muscle cells with predetermined current pulses optimizes the temporal course of the current pulse regarding at least one parameter and therefrom determines essential parameters of nerve and / or muscle cells.

PCT No. PCT / EP97 / 06344 Sec. 371 Date May 20, 1999 Sec. 102(e) Date May 20, 1999 PCT Filed Nov. 13, 1997 PCT Pub. No. WO98 / 23868 PCT Pub. Date Jun. 4, 1998A microvalve has a base element provided with a passage opening, a tappet, a suspension device for guiding the tappet, and a piezoelectric actuator for actuating the tappet. The suspension device guides the tappet relative to the base element in such a way that the passage opening can be closed or opened by the tappet. The longitudinal dimensions of the piezoelectric actuator can be changed by the application of an electric voltage. Longitudinally spaced ends of the piezoelectric actuator are connected to longitudinally spaced ends of the suspension device in such a way that the suspension device provides a way for mechanical translation between the actuator and the tappet. A change in the longitudinal dimensions of the piezoelectric actuator caused by the application of an electric voltage to the piezoelectric actuator is mechanically translated by the suspension device into a movement of the tappet essentially at right angles to the longitudinal direction so that the passage opening will be opened or closed. In addition, the suspension device is secured to the base element with the aid of a hinge-like element. At least two spaced points are used to secure the suspension device to the base element.

An optical transceiver 10 includes an optical device 16 which is provided upon a substrate 11, an optical connector 14 which is connected to an optical fiber 15a, and a connector holder 13 for optically connecting together the optical device and the optical connector 14. The connector holder 13 includes an engagement means 13c which holds the optical connector 14. The engagement means 13c holds the optical connector 14 when the optical connector 14 is pressed in towards the substrate. The optical connector 14 supports the optical fiber 15a so that the optical axis of the optical fiber 15a subtends a fixed angle with respect to the optical axis of the optical device 16. And the optical connector 14 includes a mirror 14g for optically connecting between the optical device 16 and the optical fiber 15a.

The present invention discloses an antenna structure. The antenna structure is used for taking ad a base shell and comprises a metal floor, a metal frame, a feeding port, a matching circuit, a resonance circuit and a parasitic branch knot. A slit with a width in the range from 0.5mm to 3mm is arranged between the metal floor and the metal frame; the feeding port is electrically connected with the metal floor and is electrically connected with the metal frame through the matching circuit; and one end of the parasitic branch knot is electrically connected with the metal floor through the resonance circuit. The antenna structure is able to realize multi-band frequency work, and is small in size and required space and high in practicality. The present invention further discloses a mobile terminal with the antenna structure.

The invention belongs to agricultural seeding machinery, and in particular relates to a permanent-magnet magnetic-attraction precision seeding device. A semi-open type seed box is arranged on the side of a roller; the roller is fixedly connected with a transmission shaft and follows the transmission shaft to rotate in the single direction; the upper edge of the wall of the roller is uniformly provided with a plurality of through holes in the circumferential direction; a permanent-magnet magnetic attraction head, a magnetic-attraction-head jacket, a magnetic-attraction-head cover plate and a pressure spring are arranged in each through hole; one end of the permanent-magnet magnetic attraction head is arranged in the magnetic-attraction-head jacket, and the other end of the permanent-magnet magnetic attraction head passes through a center hole of the magnetic-attraction-head cover plate but does not exceed the upper surface of the magnetic-attraction-head cover plate; the pressure spring is positioned between the magnetic-attraction-head jacket and the cover plate; a cylindrical cam is hollowly sleeved on the transmission shaft and is fixed; the outline of the cylindrical cam consists of a circular arc surface and a platform surface; and the platform surface is partially arranged on the lower part of the cam. The seeding device has the advantages of improving the magnetic attractive force of the magnetic attraction head, reducing the content of iron powder needed by magnetic-powder coatings of seeds, reducing the structure size of seeding elements and conveniently realizing the automatic seed-taking function and automatic seeding function of the magnetic attraction head.

The present invention relates to continuous combustion constant power engine. There are one independent continuous combustor outside the cylinder, two sets of link rod-piston mechanisms with gas compressing device and expansion device, and one gas exchange valve for connecting these two mechanisms to the continuous combustor, to constitute one complete thermal engine. The present invention can reach ideal low temperature multiple fuel clean combustion with less noise, no smoke and no combustion detonation, and has raised compression ratio, raised expansion ratio, high heat efficiency, and reduced exhaust of harmful gas. The independent combustor of the present invention can realize fast ignition and self starting without compression and in the condition of low temperature.

The invention relates to an AGV (Automatic Guided Vehicle) for a multiple-wheel train heavy load mobile robot. The AGV comprises a frame, wheels, an electric control device, a floating spring structure frame, a driving device and a steering device; the electric control device is electrically connected with the driving device and the steering device; the wheels are divided into driving wheels and supporting wheels; the driving wheels are coaxially connected with the driving device and are horizontally and lengthwise connected with the steering device; the floating spring structure frame is arranged between the wheels and the frame and is connected with a wheel assembly support; and the wheels are arranged on the wheel assembly support and have the effect of buffering and uniform loading. The AGV adopts a multi-wheel train full floating multi-drive chassis structure so that the generality of the driving wheels is increased; the structure size of the driving wheels is reduced, thereby reducing the production cost; and the AGV has good stability and meets the using requirements of heavy loading and multiple road surfaces.

The invention discloses a double-rotating circularly polarized antenna which can meet with the using requirements of broadband miniaturization communication equipment, comprising an upper-layer radiation paster 1, a lower-layer radiation paster 2, a floor 3 with coupling gaps, a feed network 4, a dielectric substrate 5, a medium screw 6 and a base 7, wherein the upper-layer radiation paster 1 adopts medium coupled feeding; the lower-layer radiation paster 2 adopts floor 3 coupled feeding with the coupling gaps; the dielectric substrate 5 is used for supporting the gap between the upper-layer radiation paster 1 and the lower-layer radiation paster 2 as well as the gap between the lower-layer radiation paster 2 and the floor 3; and the feed network 4 is located below the floor 3 and adopts a strip line form. Double-tuning characteristic is formed by medium coupled feeding so as to further broaden the antenna impedance bandwidth and axial ratio bandwidth; and caliber utilization is improved in a limited space. Simultaneously, the bandwidth of the antenna is effectively broadened and the structural size of the antenna is reduced through H-shaped gap medium coupled feeding.

The invention discloses a hydraulic lifting device, and belongs to the field of ocean engineering. The device comprises a jacking frame sleeved on a pile leg, a fixed ring beam, a lifting cylinder, a moving ring beam, a plurality of first inserted pin modules arranged on the fixed ring beam, and a plurality of second inserted pin modules arranged on the moving ring beam, wherein both ends of the lifting cylinder are respectively connected with the fixed ring beam and the moving ring beam; one end of the jacking frame is connected with the fixed ring beam, and the other end of the jacking frame is provided with a connecting structure for detachably connecting with a ship body. The jacking frame and the ship body are detachably connected, so that the hydraulic lifting device is simple in connection and convenient to detach; and the lifting device is compact in inner structure, small in size of integral structure and convenient to transport integrally; the hydraulic lifting device is directly assembled with the ship body after reaching the destination; and all structures inside are not required to be assembled again, so that the work load is reduced.

A sensor device includes a housing base part, a bearer part, a chip structure situated on the bearer part, and a spring / damper combination via which the housing base part and the bearer part are elastically connected to one another. In the sensor device, the housing base part, the spring / damper combination and the bearer part are situated one over the other.

The invention provides a hybrid type rapid direct current breaker, comprising: a main flow branch, a current transferring branch and an energy consumption branch. All are connected in parallel. The main flow branch comprises a rapid mechanical switch unit and a main branch sub-module unit. The two units are in series connection. The current transferring branch comprises valve module units in successive cascade connection with each valve module unit comprising a plurality of semiconductor modules in series connection. The energy consumption branch comprises energy consumption components in successive cascade connection. According to the invention, the design of the breaker structure is such a design featuring the electrical topology corresponding to modularization. This means that for the application requirement of different voltage grades, the structure can be expanded to do so. As the breaker adopts a single platform supporting structure, all functional units can be integrated onto the platform, therefore, making the equipment highly integrated, small in size, and strongly resistant to earthquakes. Highly reliable and flexible in structure, better electric compatibility can be achieved. With the breaker, it is possible to rapidly cut off the current in fault when the direct current system meets a fault.

The invention relates to a high-temperature Fabry-Perot composite micro / nano fiber temperature and pressure sensor, and belongs to the technical field of fiber sensors. The sensor comprises a fiber access segment, a pressure sensor segment and a temperature sensor segment, wherein the fiber access segment includes a solid fiber, the pressure sensor includes a hollow thin-wall fiber, and the temperature sensor includes another solid fiber. Cylindrical holes are formed in the end portions of the two solid fibers respectively in a femtosecond second processing method, and then welded to form an FP interference type pressure cavity, one fiber serves as the fiber access segment, the other fiber is cut and ground to the solid fiber of certain thickness, a temperature sensor is thus formed, and the difference between the cavities lengths of the temperature sensor and the pressure sensor is controlled to decouple double-parameter measurement. Compared with the prior art, the sensor of the invention is small in structural size, resistant to high temperature, capable of measure the temperature and pressure at the same time, and free of cross sensitivity of the two parameters.

The invention discloses a ray pectoral fin-imitated piezoelectric coupling propulsive mechanism. The ray pectoral fin-imitated piezoelectric coupling propulsive mechanism comprises a crankshaft, guide rods, a swinging block, a piezoelectric compound fin, a fish body pedestal, a crankshaft support, a driving motor, a battery pack and a main control panel, wherein the crankshaft is arranged on the crankshaft support; the swinging block comprises a pin shaft and a swinging block support; the pin shaft is arranged on the swinging block support; the crankshaft support and the swinging block support are fixedly arranged on the fish body pedestal; one of the guide rods is arranged between one end of the swinging block and the crankshaft; the driving motor and the crankshaft are connected through a gear; the piezoelectric compound fin is arranged at the other end of the swinging block; the battery pack can provide a direct current power source; the main control panel is electrically connected with the piezoelectric compound fin; the crankshaft is a four-turn crankshaft; the guide rod is arranged on each turning shaft of the four-turn crankshaft. The ray pectoral fin-imitated piezoelectric coupling propulsive mechanism can reduce the structural size, the weight of the fish body, and can realize chordwise fluctuation propulsion.

Device and method for generating brief strong current pulses in a coil for generating magnetic field pulses which according to the electromagnetic induction principle induce stimulation currents in the body tissue triggering an action potential of the nerve and / or muscle cells, where the coil is positionable close to the body tissue to be stimulated so that its magnetic field passes through the body tissue, and where the device comprises a power generating unit that can generate a freely selectable temporal course of the current through the coil during the current pulse. A method for determining an optimized temporal course of a brief strong current pulse through the coil, where the temporal course of the current pulse is calculated using a method which numerically simulates the electrical behavior of nerve and / or muscle cells and the coil and optimizes the course of the current pulse regarding at least one parameter, or which by means of stimulating the nerve and / or muscle cells with predetermined current pulses optimizes the temporal course of the current pulse regarding at least one parameter and therefrom determines essential parameters of nerve and / or muscle cells.

A three-finger mechanical gripper with a variable structure relates to a three-finger mechanical gripper and solves problems of large size, high maintenance cost and gripping structural limitation of the whole gripper in the present three-finger mechanical gripper. Three rotating shafts are evenly distributed on a rotating pedestal; an output shaft of a motor on the bottom end of each finger is fixedly connected with a corresponding worm rod; each worm rod is engaged with a corresponding worm gear; each small straight gear is engaged with a large straight gear; an output shaft of each finger joint motor is fixedly covered with a coupling connection rod; one end of the coupling connection rod is connected with the tail end of a short side of a second joint via a first driving rod; the other end of the coupling connection rod is connected with one end of a second connection rod and one end of a first connection rod via a second driving rod; the other end of the first connection rod is connected with the second joint; and the tail end of the long side of the second joint and the other end of the second connection rod are both connected with a first joint. The three-finger mechanical gripper with the variable structure can be applied to the technical field of robots.

The invention relates to a stick-slip inertia based serial three-degree-of-freedom piezoelectric precision driving platform and the linear motion along the x and y direction and the rotating motion around the z axis direction can be implemented. The stick-slip inertia based serial three-degree-of-freedom piezoelectric precision driving platform comprises a lower layer of x axis linear driver assembly, a middle layer of y axis linear driver assembly and an upper layer of z axis rotating driver assembly which are connected in turn and sawtooth waves are input towards piezoelectric stacks based on the stick-slip inertia principle to implement the stepping type continuous feeding of an output terminal. The symmetry and the frequency of the sawtooth waves are changed to change the feeding direction and speed. The positioning motion of the rapid feeding positioning and the precise feed positioning can be implemented through different modes of control on the piezoelectric stacks and accordingly the rapid and high precision positioning can be obtained simultaneously. The stick-slip inertia based serial three-degree-of-freedom piezoelectric precision driving platform has the advantages of being small and compact in structure, large in output stroke, adjustable in speed, large in bearing capacity, stable and reliable in work, good in repeatability and suitable for large stroke of precision motion control occasions with strict space size constraints.

The invention belongs to the field of broadband reconfigurable micro-strip antennas and particularly relates to a mobile phone antenna with a reconfigurable directional diagram. The mobile phone antenna with the reconfigurable directional diagram is used for receiving and transmitting wireless signals in communication devices such as a mobile phone and an ISM communication device. The mobile phone antenna with the reconfigurable directional diagram is composed of two medium substrates, four bending-shaped passive vibrators, four horizontal straight passive vibrators, six switches, two dipole excitation vibrators, two perpendicular parasitic vibrators, a balancer and a coaxial feeder. The first bending-shaped passive vibrator, the first horizontal straight passive vibrator, the second horizontal straight passive vibrator and the second bending-shaped passive vibrator are sequentially connected together to form a first connecting structure through the switches. The third bending-shaped passive vibrator, the third horizontal straight passive vibrator, the fourth horizontal straight passive vibrator and the fourth bending-shaped passive vibrator are sequentially connected together to form a second connecting structure through RF-PIN switches. The antenna is small in SAR value, low in radiation, high in efficiency, simple in structure, convenient to machine and low in cost.

Disclosed in the invention is a dynamic entropy probe comprising a rectifying cover, a static vent, a first high-frequency response pressure sensor, a hotline hole, a total pressure tube, a rectifying cover hole, a pressure guiding tube, a second high-frequency response pressure sensor, a pressure sensor support, a hotline, a hotline support and a semi-infinite long flexible tube. According to the dynamic entropy probe, the flowing total pressure, static temperature and velocity can be measured dynamically, thereby obtaining the local entropy. Because the obtained entropy is the physical parameter for measuring the most reasonable internal flowing loss, the weight on the efficiency influence by the nonsteady flow loss and even the internal flow loss of the turbomachinery can be analyzed in a quantitative mode.

The invention discloses an antenna structure comprising a metal sheet case, a feed port, and a resonance circuit. The metal sheet case is in a rectangular shape; and a gap is formed in the position approaching one side, wherein the gap parallel to the side has the width of 0.5 millimeter to 5 millimeters. The feeding port is electrically connected with the metal sheet case. The two ends of the resonance circuit are connected with two sides of the gap of the metal sheet case. According to the antenna structure, multi-band working can be realized; because of the small size, the needed space is small; and the practicability is high. In addition, the invention also discloses a communication terminal having the antenna structure.

A collapsible power-driven table stand includes a supporting body of an elongated shape, a first stand having a first driving member and a plurality of first extendable rods driven by the first driving member to move axially relative to each other and a second stand having a second driving member and a plurality of second extendable rods driven by the second driving member to move axially relative to each other. The first diving member is pivotally attached to one end of the supporting body and the second diving member is also pivotally attached to another end of the supporting body in order to allow both the first and second stands to extend / collapse relative to the supporting body. Accordingly, the assembly of the collapsible power-driven table is simplified and the overall size thereof is reduced.

The invention relates to a mounting arrangement for optical devices having a mounting plate forming an undercut guide for receiving a clamping plate, the mounting plate comprising a side bar in which an undercut profile groove is formed, and having a strip located opposite the bar movably connected to the mounting plate via a clamping mechanism and a second undercut profile groove forming the undercut guide together with the first undercut profile groove, the strip being able to be tightened against the mounting plate by the clamping mechanism to fix the clamping plate, whereby the spacing distance between the undercut profile grooves is reduced. A second undercut guide is formed by additional undercut profile grooves in the same side bar of the mounting plate and the same strip, wherein the guides are both disposed on one side of the plane (X) spanned by the mounting plate.

The invention discloses an under-actuated picking tail end executing device and an under-actuated picking tail end executing method. The device comprises a hand executing mechanism, a driving mechanism and a support seat assembly, wherein the hand executing mechanism is connected with the driving mechanism through the support seat assembly, the hand executing mechanism is of a three-claw type structure, three claws are uniformly distributed on the edge of the outer periphery of a palm, the bottom of each claw is arranged on the palm through corresponding hinging assemblies, the middle of each claw is provided with a pulley, each pulley is connected with the palm through a steel wire rope, and the bottom of the palm is connected with the driving mechanism through a press block. According to the method, a wire winding tube rotates for winding the steel wire rope, the steel wire rope drives the claws to approach to fruits and to tightly clamp the fruits, after the fruits are tightly clamped, the wire winding tube drives the fruits, the claws and the palm to simultaneously rotate relative to a motor support seat, and the torsion fruit separation is realized. The device and the method provided by the invention have the advantages that the under-actuated principle is applied, the effects of tightly clamping the fruits at first and then realizing the torsion fruit separation are realized, the control of the whole work process is simple, the efficiency is high, meanwhile, the clamping force of the claws on the fruits can be preferably controlled, and the fruit damage phenomenon is avoided.

A device for laying a flexible material web 1 on a point of deposit 4 and which has at least one pair of deposit rollers 2, 3 that rotate in opposite directions. The deposit rollers 2, 3 form part of a deposit carriage 5 which is reciprocated in a reversible direction over at least the deposit length L of the material web 1. The device is more cost-effective in that the deposit carriage 5 has a smaller width than the point of deposit 4 and is reciprocated in a reversible direction over at least the deposit width B of the point of deposit 4.