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.

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 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 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 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.

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 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.