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102results about How to "Reduce overall size" patented technology

Embedded MENS bioelectrode and preparation technology thereof

The invention discloses an embedded MEMS bioelectrode and a preparation technique thereof, which is applied to rehabilitation therapy of neurogenic disease in clinical medicine. An electrode employs MEMS processing technology to prepare a graphical stimulating electrode, a graphical recording electrode and a graphical outlet terminal with a concave pit structure of an electrode circuit at a substrate. A chemical vapor deposition method is employed to grow multiple layers of impermeable insulting layer; a wet etching method is employed to etch the impermeable insulting layer of the stimulating electrode, the recording electrode and the outlet terminal of the electrode circuit; thereby the metallic film of the electrode and the outlet terminal of the electrode is exposed; an electroplating technique is combined to form a thick film structure of the outlet terminal of the electrode circuit and realize a reliable connection with an external conductor. Materials with good biocompatibility are employed to prepare metal and the insulting layer of the electrode, and all parts outside the stimulating electrode and the recording electrode are encapsulated by biological polyurethane after the electrode circuit is connected with the external conductor, thereby the whole electrode is endowed with good biocompatibility, and is suitable for being implanted into the human body for a long time.
Owner:XI AN JIAOTONG UNIV

Bevel positioning lathe fixture for precision forging bevel gear

The invention discloses a bevel positioning lathe fixture for a precision forging bevel gear, which comprises a connecting disk, a claw base, a pull rod, a tension spring, a pin, a draught spring, a shaft pin, a positioning disk, a bolt, claws, a gear mould and a screw, wherein the connecting disk is sleeved with a spigot at the left end of the positioning disk and is connected with the spigot through the bolt; the gear surface of the gear mould is rightward; a spigot at the left end is coaxially matched with an inner hole of the positioning disk and is connected with the inner hole through the screw; a claw disk is arranged in the connecting disk and is in clearance fit with the connecting disk; the tension spring is arranged between parallel end faces of the claw disk and the connecting disk; the pull rod is connected in series with the claw base, the draught spring and the connecting disk; 3 to 5 claws hinged by the shaft pin are evenly distributed at the radial end of the claw base; the right end of the claw extending rightwards protrudes and a bent hook is inward; and both ends of the tension spring tow the claws and the pin respectively. The bevel positioning lathe fixture for the precision forging bevel gear has the advantages of compact structure, small volume, accurate positioning, reliable clamping, and easy assembly and disassembly, and is particularly suitable to be used as a mating fixture of a numerical control lathe to machine bevel gears.
Owner:JIANGSU AIRSHIP GEAR

Automatic door operator and refrigerator provided with same

The invention discloses an automatic door operator and a refrigerator provided with the same. The automatic door operator comprises a base, a drive mechanism and two non-circular intermittent gear and rack actuating mechanisms for pushing door bodies, wherein the drive mechanism is fixed in the base and is used for connecting a driving source component with the non-circular intermittent gear and rack actuating mechanisms; the non-circular intermittent gear and rack actuating mechanisms are arranged in the base and comprise rack push rods for pushing the door bodies, and non-circular intermittent gears meshed with the rack push rods; when the two door bodies are in a closed state, teeth of the rack push rods are not meshed with the non-circular intermittent gears; when one door body is required to be opened, the driving source component drives the drive mechanism to rotate, thus, the non-circular intermittent gears are driven to rotate, the non-circular intermittent gears are meshed with the teeth of the rack push rods, and the rack push rods extend out of the base, and the door body is pushed to be opened. The automatic door operator has the advantages of small size, small vibration and noise, long service life and high reliability.
Owner:NANJING UNIV OF SCI & TECH

Planar waveguide continue transverse stub (CTS) antenna broadband feeding line source based on planar dielectric lens

The invention proposes a planar waveguide continue transverse stub (CTS) antenna broadband feeding line source based on a planar dielectric lens, which is used for solving the problems of incapability in simultaneously achieving miniaturization, broadband and favorable matching and high difficulty in processing assembly of the traditional line source. The feeding line source comprises an H-surface trumpet (1), a planar dielectric lens (2) and a planar waveguide (3), wherein an output port of the H-surface trumpet (1) is connected with the planar waveguide (3), the planar dielectric lens (2) is arranged in the planar waveguide (3) and comprises an intermediate layer (21) and two matching layers (22), the two matching layers are symmetric to the intermediate layer (21) and comprise a plurality of matching sub layers, each layer adopts a straight line array structure formed by a plurality of strips with different dielectric constants and extend from the middle of the strip straight line array to the two ends, and the dielectric constants of the strips are gradually reduced. The planar waveguide CTS antenna broadband feeding line source has the advantages of small structural size, wide frequency band and favorable matching performance, is easy to produce, adjust and assemble, and can be applicable for planar waveguide CTS antenna feeding.
Owner:XIDIAN UNIV

Nd-Fe-B powder molding press

The invention relates to an Nd-Fe-B powder molding press. The Nd-Fe-B powder molding press comprises a rack, an upper punching assembly and a lower punching assembly, wherein the upper punching assembly and the lower punching assembly are arranged on the rack from top to bottom. The upper punching assembly comprises an upper pressing plate, a main hydraulic cylinder, a pressure relief piston and an upper punch, wherein the upper pressing plate is fixedly mounted on the upper portion of the rack; the main hydraulic cylinder comprises a cylinder block mounted on the upper pressing plate and a piston arranged in the cylinder block in an up-down moving mode; the lower end of the piston is provided with a containing cavity with a downward opening; the containing cavity forms a pressure relief cylinder block; the pressure relief piston is arranged in the pressure relief cylinder block in an up-down moving mode, and the pressure relief piston and the pressure relief cylinder block form a pressure relief cylinder; the upper punch is connected to the lower end of the pressure relief piston. According to the Nd-Fe-B powder molding press, the pressure relief cylinder is embedded in a piston of the main hydraulic cylinder; the structure is simple and ingenious; the overall dimensions of the Nd-Fe-B powder molding press are greatly reduced; the matching performance of the weight and the overall dimensions of the press and the dimensions of pressing blanks are improved; energy consumption is effectively reduced on the premise of guaranteeing the production efficiency.
Owner:宁波钉子博士磁性技术有限公司

Rotatable pneumatic gripping tool

The invention relates to a rotatable pneumatic gripping tool, which comprises a rotary head, a thimble, a cylinder body, a piston, a cylinder cover shaft, a shaft sleeve assembly and an air supply source, wherein three clamping jaws are connected to the rotary head; the tail parts of the clamping jaws extend into the rotary head; the tail parts of the clamping jaws are provided with small holes; the clamping jaws are connected through the small holes on the tail parts by using a circular tension spring; the front end of the thimble extends into the rotary head; the front end of the thimble has a conical shape which is matched with the tail contact surface of each clamping jaw; the thimble is connected with the piston through a screw; the piston is arranged in the cylinder body; a spring is arranged between the inner front end face of the cylinder body and the piston; the front end of the cylinder body is in threaded connection with the rotary head; the back end of the cylinder body is connected with one end of the cylinder cover shaft; the other end of the cylinder cover shaft passes through a ventilation disk in a shaft sleeve seat, and is locked through a shaft coupling; the shaft sleeve seat is provided with a ventilation hole; and the air supply source is communicated with the ventilation disk. Synchronous clamping of the three clamping jaws is realized through one-way air supply, 360-degree revolving during air supply is realized through a coaxial air path, clamping of the three clamping jaws and the revolving action do not influence each other, and the overall dimensions of the three clamping jaws are small.
Owner:SHANGHAI TENZ ELECTROMECHANICAL

Robot joint variable rigidity module based on cam type lever structure

PendingCN109465848AReduce overall sizeReduce external shocksJointsCamJoint variable
The invention discloses a robot joint variable rigidity module based on a cam type lever structure. The robot joint variable rigidity module comprises an input part, an output part and a rigidity adjusting part. The rigidity adjusting part comprises pressure springs, a cam type lever and a rigidity adjusting supporting point. The cam type lever rotates around the rigidity adjusting supporting point, one end of the cam type lever cooperates with the output part, and the other end of the cam type lever cooperates with the pressure springs. A bearing is arranged between the input part and the output part so as to bear non-torque loads of the whole module and enable the input part and the output part to relatively rotate. When the output part of the variable rigidity module bears outer instantloads, the loads are transmitted to the pressure springs through the cam type lever to be absorbed, and therefore outer impacts are reduced, and flexible drive output is achieved; and meanwhile the robustness and operation stability of a robot are improved. The robot joint variable rigidity module is compact in structure and low in cost and is integrated into a module, and therefore the robot joint variable rigidity module can be conveniently applied to various kinds of interactive equipment, especially, flexible robot joints. The robot joint variable rigidity module further has the advantages of being convenient to operate and easy to implement.
Owner:GUANGDONG UNIV OF TECH

Water pressure testing device for valves and test method thereof

The invention discloses a water pressure testing device for valves, a support plate is installed at the end part of a piston rod, fine-tuning oil cylinders are installed on the support plate, pressuretesting right flanges are installed on the fine-tuning oil cylinders, pressure sensors are installed between the pressure testing right flanges and the fine-tuning oil cylinders, a control device comprises four parts including a display screen operation platform, a hydraulic control module, an acoustic emission signal processing module and a water pressure control module, the hydraulic control module is used for controlling oil to enter into and drain out from a rod port and a head port in a hydraulic cylinder, an acoustic emission signal processing system which leads out a group of acousticemission sensors attached onto a valve housing is installed in the acoustic emission signal processing module, and the water pressure control module controls an electrically operated reversing valve thereof to relieve the pressure of the system. The invention enable users to detect active crack defects and detailed leakage points and judge crack size and leakage degree through the acoustic emission sensors of the device, so as to ensure that the flanges are sealed without leaking.
Owner:荆州市世纪派创石油机械检测有限公司 +2

Two-degree-of-freedom micro-nano positioning platform

ActiveCN109493913AReduce overall sizeReduced displacement nonlinearityInstrumental componentsWire cuttingMicro nano
The invention discloses a two-degree-of-freedom micro-nano positioning platform. The two-degree-of-freedom micro-nano positioning platform comprises a base, a motion platform, guide mechanisms, decoupling mechanisms and drivers. The motion platform is arranged in the middle portion of the base. The four sides of the motion platform are connected with the motion mechanism. The guide mechanisms areconnected with the decoupling mechanisms. The decoupling mechanisms are connected with the base. An amplifying mechanism is arranged between the motion platform and each decoupling mechanism and connected with the decoupling mechanism. The drivers are arranged in the corresponding amplifying mechanisms. The drivers are used for driving the motion platform. The space of the positioning platform iseffectively utilized through the structural layout. The overall size of the positioning platform is reduced. Force-displacement nonlinearity generated from the hinge rigidity effect of the positioningplatform and concentrated stress of hinges can be reduced. Through a driver auxiliary assembly mechanism, the drivers are more conveniently assembled into the amplifying mechanisms in an interferencemode. The positioning platform can conduct wire cutting integrated machining and has the advantages of being free of assembly, friction and lubrication and the like.
Owner:HANGZHOU DIANZI UNIV

Mach-Zehnder modulator based on photonic crystal and nanowire waveguide

The invention relates to a Mach-Zehnder modulator based on photonic crystal and nanowire waveguide. The modulator comprises a photonic crystal multiple-mode interference coupling partial wave module,a photonic crystal slab waveguide phase module and a photonic crystal multiple-mode interference coupling combined wave module, the photonic crystal multiple-mode interference coupling partial wave module and the photonic crystal slab waveguide phase module are in waveguide connection through a nanowire, and the photonic crystal multiple-mode interference coupling combined wave module and the photonic crystal slab waveguide phase module are in waveguide connection through a nanowire; the photonic crystal multiple-mode interference coupling partial wave module and the photonic crystal multiple-mode interference coupling combined wave module both comprise photonic crystal multiple-mode interference couplers, the photonic crystal slab waveguide phase module comprises photonic crystal slab waveguide, and multiple-mode interference coupled zones are arranged inside the photonic crystal multiple-mode interference couplers. The modulator has the advantages that transmission speed is quick, the modulation band is wide and high, the modulator size is small, high integration and interconnection can be easily achieved, and important practical value is achieved.
Owner:NANJING UNIV OF POSTS & TELECOMM

Transmission device of pan-tilt head camera

The invention discloses a transmission device of a pan-tilt head camera. A first horizontal bevel gear and a second horizontal bevel gear are independent and coaxially arranged, so that the internal structure is more compact, and the overall size is greatly reduced; when a first motor and a second motor are same in the rotating speed and opposite in rotating direction, clockwise or anticlockwise movement of the first vertical bevel gear and the second vertical bevel gear can be realized, so that the camera fixed on a pan-tilt installing plate is driven to rotate up and down in a pitching manner; when the first motor and the second motor both the same in the rotating speed and the rotating direction, the first horizontal bevel gear and the second horizontal bevel gear rotate in the same direction, the first vertical bevel gear and the second vertical bevel gear can be in a relatively static state in the vertical direction, so that the camera fixed on the pan-tilt installing plate moveshorizontally and rotationally with respect to a pan-tilt support; and the rotation of the pitching and horizontal directions of the camera can be controlled by adjusting the rotating direction of thefirst motor and the second motor, a control mode is simple and effective, and the transmission device of the pan-tilt head camera can be applied to install a small gun type or cylindrical camera.
Owner:深圳汇讯视通科技有限公司
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