39results about How to "Increased Strength Reliability" patented technology

A multilayer ceramic capacitor includes: a ceramic body having first and second surfaces opposing each other and third and fourth surfaces connecting the first and second surfaces to each other; a plurality of internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface; and first and second side margin portions disposed on the first and second surfaces and covering exposed surfaces of the internal electrodes. A dielectric composition contained in the first and second side margin portions is different from a dielectric composition contained in the ceramic body, the first and second side margin portions contain a barium titanate-based base material powder and magnesium (Mg), manganese (Mn), and aluminum (Al) as accessory ingredients, and a content ratio of manganese (Mn) to magnesium (Mg), manganese (Mn), and aluminum (Al) satisfies 0.316≤Mn/(Mn+Mg+Al)≤0.500, based on a molar content of Mn, Mg and Al in the first and second side margin portions.

Dissimilar metal welds including a buttering portion with a small variation in strength distribution in a plate thickness direction are formed by welding two parent materials having at least one of different compositions and different refining conditions through a buttering for alleviating mismatch between one of the different compositions and the different refining conditions of the two members and through a welded metal for joining one of the parent materials and the buttering. The buttering is formed of welding metals laminated in a plate thickness direction, and a dilution ratio of the buttering with the parent materials is 50% or less. The manufacturing method includes performing butt welding on a dummy material formed by increasing a groove depth by providing a member on a bottom side of a welding groove and on parent materials by using the buttering; and processing a groove within a welding metal formed of the buttering.

In an electrolyte sheet for a solid oxide fuel cell according to the present invention, the number of flaws on at least one of surfaces of the sheet detected by a fluorescent penetrant inspection is 30 points or less in each of sections obtained by dividing the sheet into the sections each measuring 30 mm or less on a side. A unit cell for a solid oxide fuel cell according to the present invention comprises a fuel electrode, an air electrode, and the electrolyte sheet for a solid oxide fuel cell according to the present invention, which is disposed between the fuel electrode and the air electrode. A solid oxide fuel cell of the present invention includes the unit cell for a solid oxide fuel cell according to the present invention.

The invention relates to a method for improving the ceramic base material soldering connection strength, in particular to a multi-scale combined method for improving the high hard and brittle ceramic base material soldering connection strength. The method solves the problems that a joint connected through an existing ceramic base material soldering method is low in strength and the residual stress is large and the reliability is low due to the thermal expansion coefficient difference of ceramic base materials and metal. The method comprises the steps of 1, surface treatment of a high hard and brittle ceramic base material connection surface, 2, solder powder preparation, 3, composite solder paste preparation, 4, coating and 5, vacuum soldering connection, so that a high-strength high hard and brittle ceramic base material soldered joint is obtained. The compression-shear resistant strength of the obtained high hard and brittle ceramic base material soldered joint is 105-196 MPa, and the strength of the soldered joint is improved by 115-275% compared with a soldered joint adopting a conventional straight interface and no wild phase.

The embodiment of the invention discloses a wire control box for a wireless earphone. The connector comprises a female head part and a male head part detachably connected to the female portion. The Male head part comprises a bracket, a male head sleeve and a male head, Support in hollow cylinder shape, The male joint sleeve comprises a fixing part and an extending part connected to one end of thefixing part. the fixed part is accommodated inside the bracket; The extending part is located on the outer side of the support, the male head comprises an inserting end and a fixing end connected to one end of the inserting end, the inserting end is located on the outer side of the support, the fixing end penetrates through the extending part and then is fixed to the inner side of the fixing part,and when the male head is connected with the female head, the inserting end is contained in the female head and the male head is separated from the female head. According to the wire control box, thecharging convenience of the wireless earphone can be improved. The embodiment of the invention also discloses a wireless earphone.

The present invention is intended for improving the reliability of a strength proof test method for ceramic parts. The present invention is directed to a strength proof test method for making total inspection of ceramic parts, including: applying a prescribed load to the ceramic parts; and at the same time, making an acoustic emission measurement, in which the ceramic parts are considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold.

A method of producing an acoustic diaphragm includes forming a workpiece having a shape of the acoustic diaphragm by using a natural material which can be carbonized by burning, impregnating a solution including phenol resin into the workpiece, heating the workpiece to bring the phenol resin into a high polymer state, burning the workpiece in a substantially anoxic atmosphere to carbonize the natural material after the heating step, and applying or impregnating the workpiece with a coating material of a solution including phenol resin after the burning step.

The invention relates to a horizontal single-shaft directional rotation-impact combined excavation type engineering grooving machine which comprises a travelling device provided with winch equipment and a power system and a monitoring device. An impact milling device is hung at the traction end of the winch equipment and comprises a vertical guide frame, a correction device, a milling shaft and an impact device. The axis of the milling shaft is located in the plane where the guide frame is located, and the milling shaft is horizontally or obliquely arranged, is driven by a horizontal hydraulic motor or driven by a vertical hydraulic motor through a reversing device and has a directional rotary milling state of segmental balance reverse rotation. The impact device is arranged in the guide frame. A connecting cross beam above the milling shaft is connected below a guide frame bottom beam through a suspension slide device in a hanging mode. A drill rod of the impact device impacts the connecting cross beam, the milling shaft and a positioning drill bit under hydraulic drive. By adoption of the horizontal single-shaft directional rotation-impact combined excavation type engineering grooving machine, the blade direction and angle can be conditionally selected, and the excavation mode can be rapidly changed according to formation lithology, and high excavation efficiency and reliably are achieved.

A dynamic bearing apparatus which supports a shaft and a bearing so as to be capable of relative rotation by a dynamic pressure of a lubricating fluid. A bottomed screw hole (21a) is provided to at least one end of the shaft (21) to screw a headed screw (24) for attaching a thrust plate (23) a lubricating fluid (F) is filled in a gap of a screw portion between the screw (24) and the screw hole (21a) or a screw non-occupied space (17), and an interposing member (25) which reduces a void cubic content in the screw non-occupied space (17) is attached to the screw non-occupied space (17).

The invention discloses a screen frame and screen bed separated double-plastid near resonance screen which comprises a screen bed (1) and a screen frame (2), wherein main vibration springs (6) are arranged between the screen bed (1) and the screen frame (2); the screen bed (1) is mounted on the ground by isolation springs (8); exciting vibration motors (9) are mounted on the screen frame (2); the screen frame (2) consists of side plates (3) and transverse beams (4); the main vibration springs (6) are arranged between connecting seats (5) of the side plates (3) and the screen bed (1); and the exciting vibration motors (9) are mounted on the transverse beams (4). The double-plastid near resonance screen has the benefits that the screen frame serves as an exciting vibration body, so that the double-plastid near resonance screen has no extra metal consumption, and a purpose that totally consumed steel is reduced greatly under the same design function parameter; the screen frame serves as an exciter, so that the vibration strength is less, and the structural strength is high in reliability; the double-plastid near resonance screen is designed based on a principle of double-plastid near resonance, and is a large-scale rectilinear vibration screen; the power consumption is less; and an impact of equipment on a foundation is smaller.

A small-displacement rod type oil well pump with an annular plunger comprises an outer pump barrel, an inner pump barrel and the annular plunger. The upper end of the outer pump barrel is connected with a supporting leather cup assembly through a lengthening coupling, and the lower end of the outer pump barrel is connected with a valve housing of an oil inlet valve through a pump barrel coupling. The upper end of the inner pump barrel is connected with a sealing segment joint, and the lower end of the inner pump barrel is connected with the pump barrel coupling through a valve housing of an oil outlet valve. An annular work cavity is formed between the inner pump barrel and the outer pump barrel, the annular plunger is in small clearance fit with the inner pump barrel and the outer pump barrel, the annular plunger is connected with a valve rod through a valve rod lower joint, and the lower end of the valve housing of the oil inlet valve is connected with a tail pipe joint in a threaded mode through the lower joint. The annular plunger moves upwards along with the oil pump, an oil outlet valve ball is closed, an oil inlet valve ball is opened, well fluid is sucked in, fluid with a receding size of the plunger is discharged out of a well mouth, the oil inlet valve is closed, and well fluid stops from entering. In the downstroke, fluid in a pump cavity is extruded downward, and liquid is discharged into an oil pipe through a liquid outlet of a valve rod guiding sleeve after passing through the oil outlet valve assembly. The small-displacement rod type oil well pump with the annular plunger has the advantages of being high in efficiency and free of pump seizure and blocking.

The invention provides a chip bonding pad ball-mounting leveling and secondary welding method, and the method achieves the fishtail bonding of a lead and a flat interface at the top end of a ball-mounting during secondary welding through introducing a ball-mounting shaping process. According to the method, the welding process sequence for secondary welding of a plurality of chip bonding pads in the prior art is changed, the process sequence of centralized ball mounting, centralized sharp-cap-shaped welding ball flattening and shaping and centralized secondary welding is adopted, the consistency of ball mounting morphology is improved, and the stability of the secondary welding process is improved. Aiming at an electronic device adopting a chip bonding pad secondary welding process, the consistency in the welding process is improved, the abnormities of fishtail wire warping, wire shrinkage after fishtail bonding and the like in the welding process are reduced, and the strength reliability of chip bonding pad secondary welding is improved. The method has the advantages of high yield, high efficiency, high welding strength and the like under the conditions of multi-chip interconnection, laminated chip interconnection, reverse welding of the frame carrier and the chips under the condition of complex wiring and the like.

The proposal of the invention is to provide a small-scale drum-type washing and drying device which can increase the reliability of the intensity of the pipeline connection part at the same time of reducing the vibration noise thereof. The invention comprises a rotary roller (29) which can be rotated optionally and provided with a rotating shaft transversely; an outer tank (20) used for surrounding the rotary roller (29) and storing the washing water; an outer frame (2) surrounding the outer tank (20) inside; and a drying device (6) comprising a dehumidifying part, a heater and a air-feeding fan which are used for feeding hot air into the rotary roller (29). At least part of the drying device (6) is arranged at the outer frame (2) side. The ventilation channel positioned at the drying device (6) side is connected with the outer tank (20) side so as to arrange a corrugated tube (7) in such a way that the flexible direction of the corrugated tube is along the front side of the outer tank or along the basically straight direction. The corrugated tube (7) is arranged at the external side of the external periphery at the front of the outer tank.

The invention relates to a piezoelectric component having a multilayer composite structure and a preparation method thereof. The component is made of a material with piezoelectricity, the piezoelectric component having the multilayer composite structure has three-layer structure, and the structures of three layers are communicated together to form a whole; two end face layers are provided with piezoelectric material strips arranged in parallel, and the middle layer is provided with a piezoelectric material granule post; and legacy electrode layers are formed on the surfaces of the piezoelectric material strips on the two end face layers. The piezoelectric component having the multilayer composite structure is a circular, square or polygonal planar component. The invention is characterized in that: the piezoelectric component is easy and convenient to prepare and controllable in performance; the electrode layers of two ends can be welded through high-temperature leads, and all the structures of three layers are communicated, so the piezoelectric component has high strength and reliability; and the parameters of the piezoelectric component are superior to those of a solid piezoelectric component of the same overall dimension.

A multilayer capacitor includes a body including a stack structure of a plurality of dielectric layers, and a plurality of internal electrodes stacked with the dielectric layers interposed therebetween. A stress alleviation portion is disposed on at least one surface among surfaces of the body, and an external electrode is disposed on an external portion of the body and connected to the internal electrodes. The stress alleviation portion includes a first resin layer adjacent to the body, and a second resin layer covering the first resin layer and including a filler dispersed in a resin of the second resin layer.

The present invention provides a parking mechanism for an automatic transmission, which can restrain elastic deformation of a parking rod when a pulling-out force is applied and improves strength reliability. According to the parking mechanism for the automatic transmission, through engaging or releasing between a pawl (13) which is equipped on the parking rod (10) and tooth part (21) of a parking gear (20), the parking gear (20) is rotated and fixed, wherein, the parking rod (10) is adjacent with the pawl (13), and a projection part (14) which contacts with the tooth part (21) through elastic deformation of the parking rod (10) is provided.

The present disclosure is directed to a semiconductor package including a substrate having a lower surface with a plurality of slot structures. The plurality of slot structures are multi-layer structures that encourage the formation of solder joints. The semiconductor package is desirable for high reliability applications in which each solder joint termination should be checked by visual systems to ensure a proper electrical connection has been made.

A lock nut includes: a first nut having a tapered cavity; and a second nut including a base portion and a tapered lug boss arranged the base portion. The tapered lug boss can be coupled inside the tapered cavity. The first and second nuts are used in pair by self-locking. A straight slot is formed in the lug boss. Under the locking action of the first nut, the straight slot is deformed to further lock a bolt, or is discontinuously engaged with teeth of the bolt to increase an effective stress surface and locking performance of the second nut for locking the bolt. A convex reinforcing rib extends on a first surface of the first nut. An annular groove is formed in a second surface of the second nut. The convex reinforcing rib is coupled with the annular groove to enhance the strength and reliability of locking.

The present invention discloses a metallic bonding structure for copper and solder, which applies to connect at least one electronic element. The metallic bonding structure comprises at least one copper-based member and at least one zinc bonding member. The copper-based members are arranged on the electronic element through at least one solder member. The zinc bonding members are arranged between the copper-based members and the solder members. The solder members are tin-based solder bumps.