56results about How to "Reduce outline size" patented technology

There is disclosed a semiconductor device having first and second semiconductor chips. The first semiconductor chip has a memory circuit. The second semiconductor chip has a circuit controlling the memory circuit. The contour size of the semiconductor device is reduced down to a smaller size required by a client without impairing the testability of the first semiconductor chip having the memory circuit. The circuit controlling the memory circuit consists of an MPU. The memory circuit consists of an SDRAM. The two semiconductor chips are stacked on top of each other over the top surface of an interconnect substrate. The chips are sealed in a molding resin, thus forming an SiP (System-in-Package). First terminals electrically connected with the second chip are arranged as external terminals of the SiP on the outer periphery of the bottom surface of the interconnect substrate. Plural second electrodes electrically connected with interconnects, which electrically connect the two chips, are mounted as terminals for testing of the SDRAM. The second electrodes are located more inwardly than the innermost row of the first external electrodes on the bottom surface of the interconnect substrate.

The invention relates to a coaxial Fizeau synchronous phase shifting interferometer capable of adjusting extended light illumination and belongs to the field of an optical interference measuring device. The coaxial Fizeau synchronous phase shifting interferometer comprises an extended light source assembly, a fronting Michelson type interferometer assembly and a Fizeau main interferometer. In the invention, the fronting interferometer assembly is adopted to generate two illumination light waves of orthogonal polarization state; polarization phase shifting interferometry between a measured surface and a reference surface is realized through match of spatial coherence of the fronting interferometer and the main interferometer; and an additional fringe is removed by using the characteristic of a short coherent optical length of an extended light source space. The coaxial Fizeau synchronous phase shifting interferometer has the characteristics of long measuring distance, continuous and adjustable contrast ratio, continuous and adjustable coherent optical length, easy operation, lower error requirement on a high frequency surface shape of the reference surface and the like; and the coaxial Fizeau synchronous phase shifting interferometer can be used in the fields of high precision detection of an optical element, optical element on-line detection and super-smooth surface detection and the like.

A semiconductor device uses a package substrate on which bonding leads are formed respectively corresponding to bonding pads for address and data which are distributed to opposing first and second sides of a memory chip and address terminals and data terminals which are connected to the bonding leads. The semiconductor device further includes an address output circuit and a data input / output circuit which also serves for memory access and a signal processing circuit having a data processing function. A semiconductor chip having bonding pads connected to the bonding leads corresponding to the address terminals of the package substrate and bonding pads connected to the bonding leads corresponding to the data terminals of the package substrate and distributed to two sides out of four sides and the above-mentioned memory chip are mounted on the package substrate in a stacked structure.

The invention discloses a conveying bent pipe, a concrete conveyer and a manufacturing method of the conveying bent pipe. The disclosed sequentially comprises an inner pipe, an outer pipe and a filling layer, and the outer pipe at least comprises two supporting pipes which are sequentially connected; the outer pipe of the conveying bent pipe has a split type structure and comprises two or more than two supporting pipes, thereby reducing the cost of the conveying bent pipe under the condition that the wearing resistance, the strength, the high toughness and the impact resistance are ensured. In an optimized technical scheme, the inner pipe and outer pipe are fixed by an adhesive layer to transfer the acting force of the inner pipe to the outer pipe, the supporting and protecting function of the inner pipe by the outer pipe is ensured, and safety of the conveying bent pipe can be increased. Because the inner pipe and the outer pipe can be mutually positioned by matching with an inner convex body and an inner notch, the manufacturing method of the conveying bent pipe not only can simplify a manufacturing technology in a conveying bent pipe manufacturing process, but also can reduce auxiliary mechanisms and reduce the manufacturing cost of the conveying bent pipe.

The invention discloses an aircraft skin no-allowance milling flexible tool. Multiple double-rod support units, multiple four-rod support units and multiple reference support units are arranged on a tool frame; bulb locking mechanisms are mounted on the double-rod support units and the four-rod support units; suckers or edge clampers are mounted on the bulb locking mechanisms; machining zero adaptors and assembly hole adaptors are arranged on the reference support units; the tool frame has a base; a connecting bracket is arranged on the base; a random support plate is arranged on the connecting bracket; multiple mounting holes are formed in the random support plate; expansion sleeves are mounted in the mounting holes; connecting rods are inserted in the coaxial mounting holes, and are locked through the expansion sleeves, so that the connecting rods and the random support plate are fastened; and the double-rod support units, the four-rod support units or the reference support units are mounted on the connecting rods. The aircraft skin no-allowance milling flexible tool has the advantages of simple structure, low cost, extensibility of modular structure, high clamping rigidity of thin-wall skin and convenience for application and promotion.

The invention discloses a reinforcing steel bar automatic hoop bending machine which is provided with a synchronous belt drive mechanism; the reinforcing steel bar automatic hoop bending machine comprises a traction mechanism, an aligning mechanism, a bending mechanism and a cutting mechanism; the invention also comprises a synchronous belt drive mechanism; the synchronous belt drive mechanism is arranged on the input end of the traction input shaft of the traction mechanism and the input end of the input shaft of the bending mechanism; the synchronous belt drive mechanism comprises a servo motor, driving pulleys, driven pulleys and a synchronous belt; the driving pulleys are arranged on the servo motor output shaft and the driven pulleys are separately arranged on the input end of the traction input shaft and the input end of the input shaft of the bending mechanism; the synchronous belt connects the driving pulleys and the driven pulleys. The invention has the beneficial effects that the precise transmission speed and position can be realized and the weight is light; the moment of inertia is small and the cost and noise are greatly reduced; moreover, the maintenance is convenient. The center-to-center distance between the driving pulleys and driven pulleys can be adjusted and the internal collocation is rational; therefore, the overall dimension of the reinforcing steel bar automatic hoop bending machine can be reduced.

The invention discloses a hydraulic motor driving variable compression ratio piston. The hydraulic motor driving variable compression ratio piston comprises a piston top, a piston skirt, a hydraulic motor mechanism, a rotating wheel, a speed reducing mechanism and an access port oil way; the piston top and the piston skirt respectively have cavities; the hydraulic motor mechanism is put in the cavity of the piston skirt; the rotating wheel is positioned in the piston top; four laps of spiral plates on the rotating wheel are matched with four spiral projections of the piston top; the contact part between the hydraulic motor and the rotating wheel is the speed reducing mechanism consisting of a driving gear, a planet gear and an inner gear; the hydraulic motor mainly consists of a hydraulic base, a hydraulic blade, a hydraulic baffle plate, a sealing spring and an elliptic cavity of the piston skirt; pressure oil enters the elliptic oil cavity from an oil inlet way, so that the hydraulic blade rotates to drive rotation of the rotating wheel; and under the effect of a guide rod, the piston top moves corresponding to the piston skirt to change an engine compression ratio.

The invention discloses a small-sized planar high-gain inverted-F antenna comprising a primary radiant section, a second signal transmission section, and a secondary radiant section. The primary radiant section is disposed on a primary matching line which is a wire reaching a grounding point from a signal feed-in point via a signal input section, an antenna impedance match section, a first signal transmission section, and a signal conversion section. The primary radiant section is a first radiation portion extended from signal transmission section. The second signal transmission section is a transmission section extended from the primary radiant section opposite to the direction of the signal transmission section. The secondary radiant section is a second radiation portion extended from the second signal transmission section. The improved inverted-F antenna is increased in gain, provided with miniaturized and low overall dimension characteristics, and decreased in cost, and keeps the overall product appearance.

The invention discloses a rectangular case type electric power-assisted steering controller which comprises a PCB (Printed Circuit Board), a base and a cover board, wherein a conical support column and a heat conducting seat are integrally formed on the base; the PCB is arranged on the conical support column, is positioned through two positioning columns penetrating through the PCB, and is then fixed on the heat conducting seat by combining with screws; the base and the cover board are pressed together; installation bulges are inserted into corresponding installation notches; the conical support column is positioned in the cover board and enables the cover board and the base to be fastened tighter and tighter; four circular columns which are in rectangular distribution and extend upwards are integrally formed on the base; and the back side of the base is provided with four thread installation blind holes corresponding to the four circular columns in position. The structure effectively avoids the problem of unfirm connection between the base and the cover board as well as between the PCB and the base after installation and effectively avoids the problem of overhigh local temperature of the PCB, and has a dustproof effect.

The invention discloses a multi-section high gain inverted F type antenna comprising a main radiation section, a signal conversion section and a secondary radiation section. The fold line part of the end of the main radiation section is utilized by the signal conversion section, the fold line length is strictly in accordance with the 1 / 2 wavelength rule of antenna signal frequency, thus the signal which arrives at the secondary radiation section returns to original phase, the consistence of the secondary radiation section with the radiation of the main radiation section is ensured, the signal is transmitted to the secondary radiation section to form second radiation, thus the radiation signals of the main radiation section and the secondary radiation section are overlapped, and a target of high gain is realized. The printing mode of flexible printed circuit board and the form of using die punching to obtain a metal piece structure can be used by the structure of the whole antenna, and the whole antenna also can be directly printed on the PCB for using.

The invention discloses a design method for a lens hood of an optical system with wide field of view, which is provided with a directing mirror and is used to design the preposed lens hood of a telescope objective optical system. The method is to obtain the shape of an inner cavity of the lens hood by a three-dimensional effective clear pipe composed by intercepting corresponding points on an edge contour line which is formed by the moving track of round beams of light of two reference surfaces which are connected by a straight line. In the invention, the method has the advantages of convenience, simpleness and quantification, and the designed lens hood has the minimum contour and dimension and does not shield light, thus largely restraining stray light from entering into imaging light paths directly.

The invention discloses a rotor engine and a rotor part thereof. The rotor part of the rotor engine comprises a shell, a crankshaft and a piston. An air inflow channel and an exhaust channel communicated with the cylinder barrel of the shell are arranged on the shell. Both the exhaust channel and the air inflow channel are positioned in the side wall of a cylinder. A distance is predetermined between an inner opening of each of the exhaust channel and the air inflow channel and the topmost part of the cylinder. In the rotor part of the rotor engine provided by the invention, because both the exhaust channel and the air inflow channel are positioned in the side wall of the cylinder, and the distances is predetermined between the inner opening of each of the exhaust channel and the air inflow channel and the topmost part of the cylinder, when the rotor engine works, at least one part of air in the cylinder barrel cannot flow outwards through the exhaust channel under the action of centrifugal force, and the air inflow resistance which is increased because of the centrifugal force can be reduced, therefore, the rotor engine can be ensured to achieve higher effective air inflow amount, and the premise for increasing the output power and the output rotation speed of the rotor engine is provided.

A back frame structure for a vehicle seat includes: a pair of right and left side frames extending in an up-down direction; and a lower frame configured to connect a lower end side of the right side frame and a lower end side of the left side frame, wherein: at least one side frame out of the pair of right and left side frames is fitted to one connection portion, which is a connection portion of the lower frame with respect to the one side frame, so as to form one fitting portion; and the one fitting portion is configured such that a geometrical-moment of inertia along an axis extending to a predetermined first direction gradually increases from an upper part of the one fitting portion to a lower part of the one fitting portion.

The invention relates to the field of aircraft engine manufacture, particularly to aircraft gas turbine engine (GTE) oil system elements. A drive unit box comprises a gear, a nozzle, bearings, and a centrifugal impeller having blades. The centrifugal impeller having blades comprises a cowl adapted for the formation of inner cavities; ports for the intake of a gas-oil mixture and the expulsion of air, and for oil discharge; blades that are of different lengths and are disposed at angles Alpha and Beta relative the axis of rotation of the gear. Furthermore, the centrifugal impeller can compriseblades having a curvilinear form. Furthermore, the centrifugal impeller can comprise at least two consecutively positioned stages for separating oil and air. The design of the proposed invention having the above-indicated characterizing features, in conjunction with known features, allows for improving the assembly process, reducing the dimensions and mass of the drive unit box, and increasing theefficiency of oil separation.

The invention discloses a large-sized crawler crane. The large-sized crawler crane comprises a chassis assembly, a rotating platform assembly and a crawler crane assembly, wherein the rotating platform assembly is arranged on a frame of a chassis; the crawler crane assembly is arranged on the rotating platform assembly. The chassis assembly comprise a frame, two crawler beams which is fixedly connected with the frame, and an external crawler frame which can be inserted into the crawler beams; the crawler beams and the frame form an H-shaped structure; the crawler beams and the external crawler frame are respectively of hollow box type structures with rectangular cross sections; parts for mounting a crawler are respectively arranged on the crawler beams and the external crawler frame; the matched guide rails are respectively arranged inside the crawler beams and outside an external crawler frame box body; devices which are mutually fixed and positioned are respectively arranged on the crawler beams and the external crawler frame. The large-sized crawler crane disclosed by the invention has better stability and excellent traveling and climbing capabilities; the requirements of transportation and various operation fields can be met, and ground specific pressure can be reduced.

A PZT transducer-horn integrated ultrasonic driving structure consists of a nut, a bolt, a left PZT circular stack, a flange, a right PZT truncated stack and a horn. The horn, the right PZT truncated stack, the flange and the left PZT circular stack are arranged in sequence and connected via the bolt and then fastened via the nut; the right PZT transducer is a truncated cone-shaped stack formed by PZT circular plates; and the right PZT transducer and the horn are integrated to form the ultrasonic driving structure. Considering the dimension of PZT on two sides of the flange and the horn meet the requirements for ultrasonic vibration node and antinode, the dimension of round contour of the circular PZT stack and flange is reduced to increase the thickness of the truncated PZT stack and flange. With the integrated structure, the effect of reducing the contour dimension of the ultrasonic driving surgical device can be obtained, and the outer diameter is reduced to the range of 8-10 mm as compared with the range of 12-15 mm in the prior art, thereby further meeting the application requirements.

The invention discloses a large-scale rotary drilling machine. The large-scale rotary drilling machine disclosed by the invention comprises a chassis assembly, a slewing platform assembly mounted on a vehicle frame of a chassis, and a rotary drilling machine assembly arranged on the slewing platform assembly, wherein the chassis assembly comprises the vehicle frame, two caterpillar track beams fixedly connected with the vehicle frame, and an external-connection caterpillar track frame which can be inserted into the caterpillar track beams, the caterpillar track beams and the vehicle frame present an H-shaped structure, the caterpillar track beams and the external-connection caterpillar track frame all adopt an empty core box type beam structure of which the cross section is rectangular; and components for mounting of caterpillar tracks are separately arranged on the caterpillar track beams and the external-connection caterpillar track frame, guide rails which are matched are separately arranged in the caterpillar track beams and an external-connection caterpillar track frame box body, and two devices which are mutually positioned and fixed are also separately arranged on the caterpillar track beams and the external-connection caterpillar track frame. The large-scale rotary drilling machine disclosed by the invention has the advantages that the large-scale rotary drilling machine can be suitable for transportation requirements and various working floor requirements, the ground contact pressure of equipment can be reduced, the stability of a complete machine is improved, and the large-scale rotary drilling machine has excellent walking capacity and climbing capacity.

The invention discloses a bipolar plate assembly, a manufacturing process, a cell stack and a fuel cell vehicle, and aims to solve the technical problems of high production cost, long preparation period and low yield of an existing bipolar plate manufacturing process, and the technical problems of poor durability and sealing performance of a prepared bipolar plate. The bipolar plate assembly comprises a cathode plate, an anode plate and a sealing assembly, wherein the cathode plate and the anode plate are attached in a posture that flow channel openings are opposite and are fixed into a whole through the sealing assembly; the sealing assembly comprises an outer frame insulation sealing ring wrapping a containing cavity and an inner frame insulation sealing ring wrapping a sealing groove, and the protruding height of the outer frame insulation sealing ring and the protruding height of the inner frame insulation sealing ring are both larger than the protruding height of flow channels. The cathode plate and the anode plate are connected into a whole through the integrally-formed sealing assembly, and the sealing assembly serves as a welding wire, so that the welding step in an existing bipolar plate manufacturing process can be omitted; and a plate sealing ring and a gas field side sealing ring are integrally formed, so that the sealing performance is good.

The invention discloses an electric controller used for controlling a power-assisted steering system. The electric controller comprises a PCB, a base and a cover plate. Tapered support columns and a right-angle trapezoidal thermal conduction seat are integrally formed on the base, the PCB is arranged on the tapered support columns, positioned through penetrating two positioning columns of the PCB and fixed to the thermal conduction seat by combining a bolt, the two positioning columns have different cross sections, the tapered support columns are positioned in the cover plate to cause the cover plate and the base to be buckled tighter and tighter, a triangular malassembly prevention mark is arranged on the position, close to the right rear corner, of the top of the cover plate, four rectangularly-distributed upwards-extending cylinders are integrally formed on the base, threaded installation blind holes corresponding to the cylinders are formed in the back of the base, and a plurality of right-left extending bar-type thermal conduction grooves are formed in the back of the base. By adopting the structure, the problems that the base and the cover plate, and the PCB and the base shake slightly after being installed, the temperature of part of the PCB is too high, and the cover plate and the PCB are arranged reversely are effectively avoided, and the electric controller used for controlling the power-assisted steering system has as a dustproof effect.

The invention discloses a centrifugal contra-rotating air pump with two ends axially feeding air. On the premise of basically not changing the overall size of a traditional air pump, through reasonable arrangement of a fan and a centrifugal turbine, a novel coaxial double-coupling rotor contra-rotating structure is adopted, and through the principle of conducting secondary reverse acceleration on fluid entering a suction system, lower negative pressure is achieved in the suction system, so that the fluid suction capacity of the air pump is improved. Under the condition of the same size and motor power, the suction capacity of the single contra-rotating air pump is 1.5 times or above that of a traditional air pump system. The contra-rotating air pump is novel in structure, high in technical content and convenient to manufacture, apply and popularize and has innovativeness.

The invention provides a wafer detection method, which comprises the following steps: a scanning machine scanning a wafer by taking a virtual unit as a unit to generate a coarse wafer graph; wherein one exposure unit is composed of an integer number of virtual units greater than 1, and one virtual unit comprises a plurality of chips; removing a virtual unit containing a test chip from the coarse wafer graph to generate a standard wafer graph; the scanning machine scanning the defects of the main chip units according to the standard wafer diagram, and the SEM machine searching the defective main chip units on the wafer according to the defect scanning generation file and detects the defective main chip units. Compared with the mode that chips are scanned one by one by taking a single chip as a unit, the number of scanned virtual chips is reduced, so that an SEM machine table has the capability of calculating a corresponding wafer graph to carry out point-to-point automatic detection. Compared with the mode of scanning the wafer by taking the exposure unit as the unit, the contour size of the scanning unit is reduced by taking the virtual unit as the unit, and the edge of the wafer can be covered by more virtual units, so that a scanning machine can scan the wafer. As the scanning unit range is reduced, the scanning precision is improved.

The invention discloses a heat conductive type electric power steering controller. The controller comprises a printed circuit board (PCB), a base and a cover plate. Tapered support columns and a heat-conducting seat in a right trapezoid shape are integrally formed on the base. The PCB is disposed on the tapered support columns and located through two locating columns penetrating through the PCB, and the PCB is fixed to the heat-conducting seat by the combination with screws. The base and the cover plate are arranged together in a press fit mode. Mounting protrusions are inserted into corresponding mounting notches, the tapered support columns are disposed in the cover plate, and the cover plate and the base are made to be fastened tighter and tighter. Four columns which extend upwards and are distributed in a rectangular shape are integrally formed on the base, threaded mounting blind holes with the number identical to the number of the columns and the positions corresponding to the positions of the columns are formed in the back of the base, and multiple strip-shaped heat-conducting grooves extending left and right are formed in the back of the base. By means of the structure of the heat conductive type electric power steering controller, the problems of slight shaking between the base and the cover plate as well as between the PCB and the base after mounting and too high local temperature of the PCB are effectively solved; besides, the dustproof effect is achieved.

The invention discloses an electric power-assisted steering controller in a square-box shape. The electric power-assisted steering controller comprises a PCB, a base and a cover board, wherein tapered supporting columns and a heat conducting seat are integrally formed on the base; the PCB is placed on the tapered supporting columns, positioned through two positioning columns penetrating through the PCB, and is fixed on the heat conducting seat through screws in a combining manner; the two positioning columns have different cross sections; the base and the cover board are pressed together; mounting bulges are inserted in corresponding mounting notches; the tapered supporting columns are positioned in the cover board, and the cover board and the base are buckled more and more tightly through the tapered supporting columns; four circular columns which are distributed in a rectangular shape and extend upwards are integrally formed on the base; a plurality of thread mounting blind holes corresponding to the the circular columns in position are formed in the back of the base, wherein the number of the thread mounting blind holes is the same as that of the circular columns. Through the adoption of the structure, the phenomena that the base and the cover board slightly swing after being mounted, the PCB and the base slightly swing after being mounted can be effectively avoided, and the problem that the local temperature of the PCB is too high is solved; the PCB can be prevented from being arranged inversely in the fore-and-aft direction; the electric power-assisted steering controller has a dust preventing effect.

The invention discloses a hydraulic steering gear for mine vehicles and an operating method thereof. A vertical shaft and an oil motor for driving the vertical shaft to rotate are arranged on a locating disk; support columns are arranged on the circumference of the locating disk, a lower platform is arranged on the support columns and the vertical shaft, and an upper platform is arranged on the lower platform; an inclinable plate is arranged above the upper platform, and a lifting cylinder used for adjusting the inclination of the inclinable plate is arranged between the inclinable plate and the upper platform; a track is fixed on the inclinable plate; locating holes and matched locating pins for lockout are arranged on the upper and lower platforms; and main and auxiliary car arresters are arranged in the track. According to the hydraulic steering gear, steering operation can be performed on all the vehicles and stowage in the whole mine, the steering angle is free, the steering force is strong, steering of work pieces heavier than 30 tons can be achieved, in terms of the operating condition, the operation is stable and safe, and the steering speed can be adjusted.

The invention discloses a power-assisted steering electric control box low in cost. The power-assisted steering electric control box comprises a printed circuit board (PCB), a base and a cover plate. Tapered support columns and a heat-conducting seat in a right trapezoid shape are integrally formed on the base. The PCB is disposed on the tapered support columns and located through two locating columns penetrating through the PCB, and the PCB is fixed to the heat-conducting seat by the combination with screws. The base and the cover plate are arranged together in a press fit mode. The tapered support columns are disposed in the cover plate, and the cover plate and the base are made to be fastened tighter and tighter. A triangular mistaken-mounting prevention mark is arranged at the position, close to the rear right corner, of the top of the cover plate. Four columns extending upwards and distributed in a rectangular shape are integrally formed on the base, threaded mounting blind holes with the number identical to the number of the columns and the positions corresponding to the positions of the columns are formed in the back of the base, and multiple strip-shaped heat-conducting grooves extending left and right are formed in the back of the base. By means of the structure of the power-assisted steering electric control box, the problems of slight shaking between the base and the cover plate as well as between the PCB and the base after mounting, too high local temperature of the PCB and reverse disposing of the cover plate are effectively solved; besides, the dustproof effect is achieved, and the manufacturing cost is low.