88 results about "Structural Problem" patented technology

A film bulk acoustic resonator (FBAR) includes an insulation layer on a substrate to prevent a signal from being transmitted to a substrate. The FBAR includes a portion of a membrane layer corresponding to an activation area to adjust a resonance frequency band and improve a transmission gain of the resonance frequency band, the portion of the membrane layer being partially etched to have a thickness less than the other portion of the membrane layer. A method of forming the FBAR includes forming an sacrificing layer made of polysilicon, forming an air gap using a dry etching process, and forming a via hole. The method prevents structural problems occurred in a conventional air gap forming process and provides locations and the number of the via holes to be controlled.

Discloses skin and interior core structures made shape-adjustable with a layer of skin core forming a pre-molded perimeter rail; exterior structural skin can be molded using a convex shape-defining mold to produce a plurality of different shapes; separate subparts give the mold the capacity to describe different curves and modify different parameters of the board's design. Mold is reversible; male/female configurations produce convex shape-defining substrates allowing a wide array of different shapes. Board is fabricated without use of any concave shape-defining surface, and therefore without the high manufacturing costs and structural problems of prior art female molds.

A method for producing an optical fiber cable which improves stability by attaching an Aramid yarn near the core in parallel to an axial direction of the optical cable and solves structural problems of the cable by soaking an Aramid yarn into an epoxy resin is disclosed. This optical cable producing method uses a tensile material for improvement of tensile property, and includes the steps of soaking the tensile material into an epoxy resin, and attaching the tensile material to the optical cable in parallel to the axial direction of the optical cable.

We propose new systems for certificate revocation that are more economical and efficient than traditional ones. We also point out what we believe to be a structural problem in traditional public-key infrastructures, and various ways to solve it.

The invention discloses an underfilled magnetic liquid shock absorber adopting a first-order buoyancy principle, belongs to the field of vibration in mechanical engineering, and successfully solves the problem that an existing magnetic liquid shock absorber cannot be applied in engineering practice due to many structural problems. The device comprises a base (1), an annular permanent magnet (2), a shell body (3), nuts (4), a sealing ring (5), a washer (6), a magnetic liquid (7), a first circular permanent magnet (8), an end cover (9), a mass block (10), a cavity (11), a second circular permanent magnet (12) and bolts (13), wherein the shell body is not completely filled with the magnetic liquid (7); the non-magnetic mass block (10) moves in the shell body (3), and generates friction, collision and viscous shearing with the magnetic liquid (7) to consume energy in the case of external vibration; and an electrical eddy current is generated in the mass block (10) to accelerate consumption for the vibration energy and achieve the purpose of shock absorption when the mass block (10) is made from a conductor material.

The inhomogeneous energy distribution at the beam spot on the irradiated surface is caused by a structural problem and processing accuracy of the cylindrical lens array forming an optical system.

According to the present invention, in the optical system for forming a rectangular beam spot, an optical system for homogenizing the energy distribution of the shorter side direction of a rectangular beam spot of a laser light on an irradiated surface is replaced with a light guide. The light guide is a circuit that can confine emitted beams in a certain region and guide and transmit its energy flow in parallel with the axis of a path thereof.

The invention discloses a first-order buoyancy magnetic liquid shock absorber used in the outer space, and belongs to the field of mechanical engineering shock. The problem that an existing magnetic liquid damping shock absorber cannot be actually applied in the engineering due to various structural problems is successfully solved. The first-order buoyancy magnetic liquid shock absorber used in the outer space comprises a first limiting permanent magnet (1), a first suspension permanent magnet (2), magnetic liquid (3), a shell (4), a mass block (5), a second suspension permanent magnet (6) and a second limiting permanent magnet (7). When the outside vibrates, the mass block (5) moves in a cavity, the magnetic liquid (3) flows in the gap between a hole wall and the mass block (5) in the shell (4), and therefore energy is absorbed, and the purpose of shock absorption is realized.

A head actuator assembly includes a coarse positioner base assembly that is mounted on a guide shaft and an anti-rotation shaft and provides increased structural rigidity due to a four-point support and spring loading of the coarse positioner base against the anti-rotation shaft. A two-part head-carriage and voice coil holder system permits different materials to be used for the head-carriage and the voice coil holder, obviating structural problems of a single-structured head-carriage and coil-holder system. A flexible printed circuit bracket eases manufacture and allows flexible printed circuits to be slid into the bracket and retained in place without the need for locating tabs and screws.

The invention discloses a damping vibration absorber with magnetism-isolating covers, magnetic liquid and application of a first-order buoyancy principle, and belongs to the field of mechanical engineering vibration. By the aid of the damping vibration absorber, the difficult problem that existing damping vibration absorbers with magnetic liquid cannot be applied to engineering practice due to diversified structural problems can be successfully solved. The damping vibration absorber comprises a lower magnetism-isolating outer sleeve (1), a lower magnetic inner sleeve (2), an upper magnetism-isolating outer sleeve (3), an upper magnetic inner sleeve (4), an end cover (5), a first permanent magnet (6), the magnetic liquid (7), an upper spherical shell (8), a lower spherical shell (9), a counterweight (10), a second permanent magnet (11) and a shell (12). The damping vibration absorber has the advantages that non-magnetic mass blocks formed by the upper spherical shell, the lower spherical shell and the counterweight (10) can move in a cavity when the external vibrates, the magnetic liquid flows in the shell (12), accordingly, energy can be absorbed, frequency difference between the mass blocks and the shell (12) can be formed by first-order buoyancy generated by the first permanent magnet (6) and the second permanent magnet (11) inside the magnetic liquid, and magnetic flux leakage of the permanent magnets can be effectively prevented by the upper magnetism-isolating cover and the lower magnetism-isolating cover.

The invention relates to a first-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers, belongs to the field of mechanical engineering vibration, and successfully solves the problem that the existing magnetic liquid damping shock absorbers cannot be applied in engineering practice due to various structural problems. The absorber comprises a first permanent magnet (1), a housing (2), a mass (3), an end cap (4), a second permanent magnet (5), magnetic fluid (6), an upper magnetic inner sleeve (7), an upper magnetic shielding outer sleeve (8), a lower magnetic inner sleeve (9) and a lower magnetic shielding outer sleeve (10). When the external vibration occurs, a non-magnetic ball moves in a chamber, the magnetic fluid flows in a recess of the housing (2) to absorb energy, first-order buoyancy formed within the magnetic fluid by the first permanent magnet (1) and the second permanent magnet (5) allows frequency difference to be formed between the mass (3) and the housing (2), so that the maximum vibration damping efficiency is achieved, and the upper and lower magnetic shielding covers effectively prevent magnetic flux leakage of the permanent magnets.

An automatic assembly production line for automobile rear door glass, which includes a pair of glass conveyors, a transfer mechanism based on a manipulator, and a glass injection edge wrapping machine, the transfer mechanism based on the manipulator includes a manipulator and a finished glass unloading manipulator clamp, the manipulator's The base is fixedly installed on one side of a pair of glass conveyors; the invention adopts the manipulator to cooperate with the transfer of the automobile glass, and the finished glass unloading manipulator has a high degree of automation, and can cooperate with the manipulator to automatically complete the loading, pressing and placing of the automobile triangular glass. The nail column, the lower piece and the material handle grab work, which is efficient, stable and reliable. The structure of the injection mold for automobile rear door glass wrapping is reasonable and the degree of automation is high. The efficiency is high, and the damage rate of the glass guide rail caused by the demoulding problem caused by the structure is eliminated, and it has good promotion and practical value.

The invention discloses a horizontal rotary roller conveyer, comprising a frame, two driving devices, a roller machine, a rotary seat, a bracket, a gear set and foundation bolts, wherein the foundation bolts are mounted at the bottom end of the frame; the two ends of the roller machine are mounted on the bracket of the rotary bracket through a pillow block bearing; the two driving devices are mounted at the lower part of the roller machine and at the lower part of the gear set respectively; a synchronous belt is connected to the driving device at the lower part the roller machine; and the synchronous belt drives the roller machine to rotate. The horizontal rotary roller conveyer disclosed by the invention solves the structural problem of use requirements of transplanting and conveying materials in different angles; the horizontal conveyance is carried out by employing a roller; according to the requirements of transplanting and conveying in different angles, angular rotation is carried out on the roller machine by a rotating mechanism, thereby achieving use requirements of transplanting and conveying materials in different angles respectively.

The invention relates to a solar cell, in order to solve the structural problem of the crystal silicon solar cell. The invention discloses a porous silicon layer structural crystal silicon solar cell, whose structure comprise in sequence: a N-type silicon layer, a P-type silicon layer, a back electrode, and a PN junction with photovoltaic effect formed on the boundary of the N-type silicon layer and the P-type silicon layer, which is charactered in that a nanometer porous silicon layer is provided on the silicon material surface at one side near to the light-receiving surface, and there are nesa structure on the surface of the nanometer porous silicon layer. The invention has made improvement in the existing structure, increasing a nanometer porous silicon layer, thus raising the photoelectric conversion efficiency of the solar cell. Because the dimension of quasi aperture and quasi hole wall of the nanometer porous silicon layer is between 2 nanometer to 300 nanometer, and the thickness of nanometer porous silicon layer is thinner, the thinner crystal silicon layer can be used to achieve the same light quantum turnout with a thicker crystal silicon layer. Therefore it saves the valuable semiconductor silicon material, and reduces the cost.

The present invention discloses a method for manufacturing lining plastic pipe by using welded connection. The method comprises the following steps: (1) stripping one section of the plastic anticorrosive coating of the lining plastic pipe port that has been subjected to lining plastic recombination, wherein the lining plastic pipe port being stripped the plastic anticorrosive coating is the connection end of the external steel pipe; (2) lining the inner wall of the connection end that is not lined with the plastic anticorrosive coating with a hot melt adhesive, wherein the hot melt adhesive is adhered to the inner wall of the connection end to form a hot melt adhesive layer; (3) inserting a stainless steel pipe into the external steel pipe from the connection end of the external steel pipe, wherein the outer wall of the stainless steel pipe is adhered with the hot melt adhesive layer; and (4) welding the outer wall of the stainless steel pipe and the port of the external steel pipe. The lining plastic pipe manufactured by this method can efficiently solve the problem of electrochemical corrosion after welding the dissimilar steel, solve the structural problem that the steel-plastic pipe cannot directly adopt welded connection, and expands the application of the stainless steel in steel-plastic pipe manufacture.

The invention discloses a system and a method for collecting user questions. The system comprises a chat robot, a question answering module, a database, and a quality platform. The chat robot is usedfor actual interaction with a user. The question answering module is used for guiding the chat robot to interact with the user to locate user question types and obtaining questions reported by the user and user information. The database is used for storing the located user question types, the questions reported by the user, and the user information. The quality platform obtains the user question types, the questions reported by the user, and the user information for analysis. Thus, the process of recording the entire process of problem classification, information collection, problem analysis and problem tracking is realized without human participation by taking the chat robot as a front end entrance. The structural problem obtained through analysis can be automatically provided to the back-end research personnel, thereby improving the recommendation precision of the whole recommendation system.

The invention discloses a preparation method of a plastic lining steel tube in welded connection. The preparation method comprises the following steps: (1) peeling a section of a plastic preservative layer at the port of the plastic lining steel tube which is lined with plastic, wherein the port of the preservative plastic lining steel tube without the plastic is a connecting end of an outer steel tube; (2) lining the inner wall of the connecting end without the plastic preservative layer with a hot melt adhesive, wherein the hot melt adhesive is attached to the inner wall of the connecting end to form a hot melt adhesive layer; (3) inserting a stainless steel tube into the outer steel tube from the connecting end of the outer steel tube, wherein the outer wall of the stainless steel tube is bonded to the hot melt adhesive layer; and (4) then welding the outer wall of the stainless steel tube with the port of the outer steel tube. The plastic lining steel tube prepared by the method not only can effectively solve the problem of electrochemical corrosion after heterogeneous steel welding, but also can solve the structural problem that steel plastic tubes cannot be directly in welded connection, and the application of stainless steel in steel plastic tube manufacturing is expanded.