6558 results about "Lap joint" patented technology

The invention discloses an LED lamp filament illuminating strip and a preparation method therefor. The illuminating strip comprises LED chips in upper and lower rows, wherein all LED chips in the lower row are distributed at intervals, and all LED chips in the upper row are respectively connected between two adjacent LED chips in the lower row in a lap joint manner. The illuminating surfaces of the LED chips in the upper and lower rows are opposite to each other. The positive and negative electrodes of all LED chips in the upper row are respectively welded with the negative and positive electrodes of two adjacent LED chips, in lap joint connection with the LED chips in the upper row, in the lower row. The preparation method comprises the steps: coating solder paste on the positive and negative electrodes of all LED chips in the lower row; heating the solder paste and enabling the solder paste to be melted, welding the corresponding electrodes, coating the front and back surfaces of chip strips in series connection with fluorescent glue, and solidifying the fluorescent glue. The illuminating strip employs the chips which are not overlapped with each other, and the illuminating surfaces of the chips are arranged oppositely, thereby improving the light-emitting uniformity and facilitating heat dissipation. The wire crossing and tandem among chips is avoided, the packaging cost is reduced, and the yield of finished products is improved.

A heat exchanger useful for high temperature applications such as EGR cooling and fuel reformer applications comprises a tube bundle made up of a plurality of tubes, each having at least one end expanded to an enlarged polygonal cross-section, and having central portions with a generally smaller cross section. When the tubes are formed into a bundle, the enlarged end portions nest with one another and interstitial spaces are provided between the central portions of the tube. The enlarged end portions are preferably retained by a header ring having a multifaceted inner peripheral sidewall which is adapted to form brazed lap joints with the outward facing surfaces of the peripheral tubes end portions in the tube bundle. In one preferred arrangement, axially aligned enlarged portions are provided intermediate the ends of at least some of the tubes. These enlarged intermediate portions nest with one another and eliminate or reduce the need for baffle plates.

The invention discloses a method for preparing a bimetal composite plate by stirring friction braze welding. The method comprises that: a plate with small hardness is used as a covering layer metal plate; a plate with high hardness is used as a base layer metal plate; the covering layer metal plate and the base layer metal plate are horizontally fixed on a working platform surface in a lap joint mode; solders which can generate eutectic reaction with one of the upper/base layer metal plates are preset between the upper/base layer metal plates; a non-needle type cylinder friction device is arranged over the covering layer metal plate; the non-needle type cylindrical friction device is made to rotate and be pressed to be closely contacted with the surface layer of the covering layer metal plate, but not penetrate the covering layer metal plate, and the non-needle type cylindrical friction device rotates in the original position or moves forward along the surface of the covering layer metal plate while rotating; by utilizing frictional heat to melt the solders, the upper/base layer metal plates are both quickly melted in the solders, thereby achieving excellent interface combination; and the excessive solders are squeezed out, and a thin and dense soldering seam is formed, so that the bimetal composite plate is prepared. Compared with the braze welding in a furnace, the method has the advantages of high efficiency, energy conservation, pressure lead-in, unnecessary soldering flux and gas protection and short holding time at a high temperature.

The invention provides a buckle structure, a heat-preservation cover plate installation structure of a pressure cooker and the pressure cooker. The buckle structure is provided with a locking structure body arranged on a first structural piece and a lock catch assembly arranged on a second structural piece. The heat-preservation cover plate installation structure of the pressure cooker is provided with one buckle structure and a lap-joint buckle. The first structural piece of the buckle structure is a heat-preservation cover plate of the pressure cooker, and the second structural piece of the buckle structure is an inner cover of the pressure cooker; and the pressure cooker is provided with the heat-preservation cover plate installation structure of the pressure cooker. The heat-preservation cover plate installation structure of the pressure cooker is simple in structure, convenient to dismantle, safe and reliable.

The present invention is a method of bonding a shaft tip to a distal end of a catheter or sheath shaft. The method includes extruding a shaft to have an initial outside diameter that is greater than an outside diameter the shaft will have when finished. A lap joint area is then ground into the distal end of the shaft. The tip is then insert molded over the lap joint area. The tip includes a collar at a proximal end of the tip that provides additional thermal mass to facilitate the bonding of the tip to the shaft. The shaft is then ground from its initial outside diameter to its finished outside diameter.

A hollow golf club head which is composed of a metal part made of at least one kind of metal material and a FRP part made of a fiber reinforced resin, the metal part having a first lap joint part, and the FRP part having a second lap joint part being lap-jointed with the first lap joint part, wherein one of the first lap joint part and second lap joint part is provided with at least one securing hole, and the other is provided with at least one protrusion engaging with said at least one securing hole.

The invention relates to a method for connecting an aluminum alloy and steel by a laser filler wire, which is suitable for the field of dissimilar material connection and particularly suitable for the connection between dissimilar materials of which fusion points and thermal physical properties differ from each other greatly. The method comprises the following steps of: assembling a lap joint in which an aluminum plate is arranged on a steel plate, wherein a laser beam, a wire feeding nozzle and a protective gas nozzle are fixed in the same plane, the laser beam is vertically incident, and a laser focus, a wire dropping point of a welding wire and a protective gas feeding point are guaranteed to be consistent during welding; and melting the fed aluminum welding wire by using the laser to ensure that the molten aluminum welding wire is in fusion connection with the aluminum plate, simultaneously a micro fusion layer is formed on one side of the steel plate and then a fusion-braze welding connection is formed, thus the lap joint between dissimilar metals such as the aluminum alloy and the steel is realized. The method improves the connection efficiency between the dissimilar metals such as the aluminum alloy and the steel, and the tensile strength of the joint is over 149.6N/mm. The method solves the problems of long preparation time, low automation degree and poor reproducibility of welding results in the process of connecting pre-coated layers of the dissimilar materials such as welded-aluminum and the steel.

The invention discloses a double-arm loading and transferring robot and belongs to the field of robot structure design. Fast package loading during air transportation is achieved through the double-arm loading and transferring robot. The robot comprises a clamping module composed of mechanical arms, a disc mechanism and a guide rail mechanism, a conveying belt module used for transferring, a chassis module capable of making the robot move freely, and a sorting module located at the transferring terminal point. During transferring, a double-arm rotary structure is adopted by the robot, the two mechanical arms are fixed to a rotatable disc, the included angle between the two mechanical arms is 180 degrees, after a package is clamped by one mechanical arm, 180-degree fixed-angle rotation of the rotatable disc is achieved through the cooperation of a clutch and an incomplete gear mechanism in the disc, the package is placed onto a small conveying belt, the other mechanical arm starts clamping simultaneously, and in this way, the double mechanical arms can conduct clamping and placing alternately so that the packages can be clamped continuously. Meanwhile, the clamped packages are transferred through the conveying belt, and the efficiency is improved. After the packages reach a transfer location, the conveying belt can be in lap joint with an airport large conveying belt by adjusting the angle and heights, and the packages are separated from a sorting device and moved to a cabin.

A semiconductor device of the invention includes an integrated circuit formed on a semiconductor substrate having first and second surfaces and edges. The first surface includes electrical contact pads electrically connected with the integrated circuit. The first surface of the semiconductor substrate includes a top protective layer that has a surface portion extending beyond the edges of the semiconductor substrate. The surface portion of the top protective layer includes electrical contact pads that are electrically connected with electrical contact pad extensions and with the integrated circuit. The second surface of the semiconductor substrate includes a multiplicity of backside electrical connectors that are in overlapping electrical contact with corresponding electrical contact pad extensions forming lap joint electrical connections between the backside electrical connectors and the corresponding electrical contact pad extensions. Methods for constructing such devices and connections are also disclosed.

The invention discloses a step-by-step friction stir brazing method for a thick aluminium plate and a rigid dissimilar material. The method can be used for avoiding various problems such as needle abrasion (when a tool with a needle is used), insufficient interface heat, poor mechanical membrane rupture effect and the like existing in the direct friction stir brazing process of the thick aluminium plate and the rigid dissimilar material (such as stainless steel, copper, titanium and steel). The method comprises the following steps of: firstly brazing a thin aluminium plate on the to-be-brazed surface of a rigid dissimilar material through needle-free friction stir brazing, striping by virtue of a metallurgical factor and a mechanical factor, and extruding brazing filler metal, thus realizing a compact joint between the thin aluminium plate and the rigid dissimilar material; and welding the thin aluminium plate brazed on the rigid dissimilar material and a thick aluminium plate through friction stir brazing or friction stir welding, wherein when friction stir brazing is utilized to weld lap joint in the second step, the welding-on area can be obviously enlarged. The process can be used for completely preventing rigid parent metal from abrading a tool; and the interface welding-on of the thin aluminium plate and the dissimilar material is reliable. The method disclosed by the invention can be used for preparing aluminium/stainless steel contact rails and aluminium/copper transition joints.

A friction stirring-welding method capable of increasing the welding strength of a lap joint. A welding tool (1) comprises a small diameter projected part (2) at the tip of a shoulder (3). The welding tool is press-fitted to the upper plate (4) of the lap joint while being rotated. By a friction stirring action, an upper plate side welding boundary surface (6) plastically flows, a surface oxidation film on a lapped surface is peeled off, and the boundary surface is activated to provide an excellent welding part. Also, since the welding tool is formed in a shape having the small diameter semispherical projected part (2) at the tip thereof, the thickness (12) of an upper plate welding part is increased, and a lap joint part with high welding strength can be provided.

The invention discloses a welding tool for production of an automobile seat framework. The welding tool for production of the automobile seat framework comprises a base (1), a feed clamping device, two side section clamping devices and a supporting bar clamping device, wherein the feed clamping device is provided with a sleeve (14) in advance and pushes the sleeve to the position above a slope (50) of the bottom section of a U-shaped bent pipe (2) in the automobile seat framework, the two side section clamping devices are used for fixedly clamping two side sections of the U-shaped bent pipe (2), and the supporting bar clamping device is used for fixedly clamping a first supporting bar (3) and a second supporting bar (4) so that the two ends of the first supporting bar (3) and the two ends of the second supporting bar (4) can be in fixed lap joint to the two side sections of the U-shaped bent pipe (2) correspondingly. By the adoption of the structure, the U-shaped bent pipe, the first supporting bar and the second supporting bar can be fixedly clamped, and therefore the welding tool for production of the automobile seat framework can guarantee fixed clamping of the U-shaped bent pipe and the welding precision and the product consistency of the first supporting bar and the second supporting bar during automatic welding.

The invention discloses a narrow lap joint welding process for cold-rolled dual-phase steel strips and belongs to the technical field of steel strip welding processes. A narrow lap joint resistance welding machine is utilized to weld the cold-rolled dual-phase steel strips. According to the technical scheme, the welding process conditions include that welding current is 9-26 KA, welding speed is 6-13m/min, the welding wheel pressure of the welding machine is 6.5-13KN, the lap joint amount of the tail portion of a previous steel strip roll and the heat portion of a later steel strip roll is 0.4-2.0 mm, and compensation amount is 0.25-0.7 mm. The narrow lap joint welding process is a bold trial, the design limits on the strength, component and the like of the narrow lap joint resistance welding machine are broken through, and narrow lap joint welding operation of the cold-rolled dual-phase steel strips is achieved through innovative operation. The narrow lap joint resistance welding machine on an existing processing line of an enterprise can be used for welding the cold-rolled dual-phase steel strips, the functions of the existing production line are greatly widened, the fund cost, production cost and device cost of the cold-rolled dual-phase steel strips are effectively reduced, and huge economic benefit is brought to the enterprise.

A band clamp that connects overlapping pipe ends includes a band, a tightening mechanism, and a gasket. The band has a radially protruding rib, a first lateral section that extends from a side of the rib, and a second lateral section that extends from another side of the rib. The tightening mechanism connects to the band and is operable to tighten the band, and the gasket is received in the rib. In one example, an axial width of the lateral sections are within a range relative to an axial width of the rib, and in another example, the lateral sections are angled inwardly with relative to an axis of the band.

The invention provides a fluorene-containing polyimide adhesive having good adhesivity with metal, which is characterized in that: the adhesive at least comprises a fluorene-containing diamine monomer, a fluorene-containing dianhydride monomer and/or a fluorene-containing end capping agent, and at least one of other fluorene-containing diamine monomers, other fluorene-containing dianhydride monomers and/or other end capping agents. A preparation method for the fluorene-containing polyimide adhesive comprises the following steps: A, dissolving a certain amount of diamine, dianhydride or the end capping agent in organic solvent, stirring at room temperature, and obtaining even polyamic acid solution; B, preparing polyimide powder or a partial imidization polyimide film by a chemical imidization method or a heat imidization method; and C, arranging the powder with certain thickness or the film between two metal sheets, and performing hot pressing on a press for a certain period of time to obtain a single-lap joint bonded part with firm adhesivity. The fluorene-containing polyimide adhesive provided by the invention is applied in the fields of high-tech such as aviation, space flight, microelectronics, etc.

The invention discloses a tooth-groove-type connection structure of an upper-layer inner wallboard of an assembly-type shear wall and a lower-layer inner wallboard of the assembly-type shear wall. Each inner wallboard comprises two contact locating structures of the upper-layer inner wallboard which are respectively arranged at two ends of each wallboard and a post-pouring concrete structure. The post-pouring concrete structure is located between the two contact locating structures. Upper grooves are formed in the bottom surface of the upper-layer inner wallboard, upper tooth-shaped grooves are formed in the bottoms of the upper grooves, and vertically-distributed rebars of the upper-layer inner wallboard stretch out from the upper grooves. Lower grooves are formed in the top surface of the lower-layer inner wallboard, lower tooth-shaped grooves are formed in the bottoms of the lower grooves, and vertically-distributed rebars of the lower-layer inner wallboard stretch out from the lower grooves. When the upper-layer inner wallboard is connected with the lower-layer inner wallboard, notches of the upper grooves are connected with notches of the lower grooves in a butt joint mode, forming grooves of the post-pouring concrete structure are formed, and the vertically-distributed rebars of the lower-layer inner wallboard and the vertically-distributed rebars of the upper-layer inner wallboard are correspondingly connected in a lap joint mode. The tooth-groove-type connection structure of the upper-layer inner wallboard of the assembly-type shear wall and the lower-layer inner wallboard of the assembly-type shear wall is easy and convenient to construct and reliable in structure.

The invention discloses an integrally-assembled cantilever-type retaining wall and a construction method thereof. A prefabricated reinforced concrete hollow wall plate (1) is adopted as a wall surface plate, and a base of the retaining wall adopts a prefabricated reinforced concrete bottom plate (2) with vertical lap-joint reinforcing steel bars (3). When the prefabricated reinforced concrete hollow wall plate (1) is in assembling, the vertical lap-joint reinforcing steel bars (3) are stretched into holes in the prefabricated reinforced concrete hollow wall plate (1); vertical stressed reinforcing steel bars (9) are inserted into the holes of the prefabricated reinforced concrete hollow wall plate (1) and concrete (7) is poured to form the integrally-assembled cantilever-type retaining wall. The provided construction method of the integrally-assembled cantilever-type retaining wall in the invention includes the following steps in sequence: (a) preparation work; (b) foundation excavation; (c) hoisting; (d) inserting of the reinforcing steel bars and concrete pouring; (e) backfilling.

The present invention discloses a multi-linked chromatographic test paper bar for detecting drug abuse in saliva and preparation thereof. The testing paper bar is a reaction film bar made of sample mats lap jointed mutually in turn pasted on the base, glass fiber film coated with colorful latex, colloidal gold or colloid selenium particles labeled protein, custodite film and absorbent paper. Control region coated anti-rat antibody, at least two detecting region of which coated with corresponding drug antigen are set on custodite film. The present invention has merits of safety and simple operation, suitable for detecting by single person/share and high detecting speed, and multi-detection of drug antigen in saliva at the same time.

The invention discloses a totally-prefabricated assembling type reinforced concrete floor system which consists of girders, prefabricated slabs, girder-slab connecting pieces, and slab-slab connecting pieces. The invention is characterized in that: the prefabricated girders are cornice girders, and the prefabricated slabs are matchboards; the prefabricated slabs are fixedly connected by the girder-slab connecting pieces after being arranged on the prefabricated girders; and the prefabricated slabs are fixedly connected by the slab-slab connecting pieces after being lap-jointed with each other. The prefabricated slabs can be prefabricated prestressed concrete cored slabs, superimposed slabs or other flat slabs. The invention realizes the bidirectional force bearing performance of the unidirectional prefabricated slabs and the four-edge fixed-end limiting form of the floor system, and can effectively meet the requirement for large span and heavy load; moreover, belonging to a totally-assembled system, the invention has the characteristics of less field operation, high construction speed, good earthquake resisting performance, and obvious effects of energy saving and environmental protection.

The invention provides a display panel and a manufacturing method thereof, wherein a display area of the display panel comprises a first area positioned at the edge of the display area; and an auxiliary electrode and a light-emitting protection layer positioned on the auxiliary electrode are arranged in the first area, and orthographic projection of the light-emitting protection layer on the auxiliary electrode is partially overlapped with the auxiliary electrode. According to the invention, an auxiliary electrode is arranged in the edge area of a display panel, and cathode layer is in lap joint with the auxiliary electrode, so that the potential of the cathode layer is increased, the voltage drop of the cathode layer is slowed down, and the brightness uniformity of the display panel is improved.

The invention provides a stretchable display substrate, a manufacturing method thereof and a display device. The stretchable display substrate comprises a substrate body, multiple display pixel unitsdistributed in an array and multiple wires; multiple first split bands and multiple second split bands which are crossed and not mutually penetrated are distributed on the substrate body and split thesubstrate body into multiple islands arranged in an array and multiple bridges connected with all the islands; each island is at least provided with one display pixel unit; the multiple wires are electrically connected with the display pixel units; at least part of the display pixel units comprise first electrodes, second electrodes and luminescent layers, the multiple wires comprise the first wires and the second wires, the first electrodes are connected through the first wires laid on the bridges and the islands, and the second electrodes are connected through the second wires laid on the bridges and the islands. Accordingly, the problem that in the prior art, the stretchable display device adopts negative poles of the whole surface for conducting level lap joint on the screen edge, andthen potential is unstable can be solved.

The invention discloses a ceramic thin film thermocouple and a manufacture method thereof. The ceramic thin film thermocouple comprises a thermocouple conductive ceramic thin film comprising a ceramic thermode layer, wherein the ceramic thermode layer comprises a first thermode and a second thermode which are arranged in a mirror symmetry mode along the center line of the thermocouple conductive ceramic thin film. Both the first thermode and the second thermode comprise lap joint transverse ends for performing lap joint of a hot connection point between the thermodes, lead transverse ends connected with leads and transition vertical portions for enabling the lap joint transverse ends to be connected with the lead transverse ends. The lap joint transverse end of the first thermode and the lap joint transverse end of the second thermode are in lap joint partially to form the hot connection point of the thermocouple. Compared with the ordinary K-shaped thermocouple, the ceramic thin film thermocouple has the advantages of being wide in temperature measurement range and adaptive to oxidation and acid-base environments. Compared with other thermocouples made of high temperature resistant materials, such as platinum and rhodium, the ceramic thin film thermocouple is low in cost in the same temperature measurement range, and applicable to temperature measurement of extreme environments in the fields of space flight and aviation and the like.