32results about How to "High conductivity reliability" patented technology

Provided is a light source that has high reliability and hardly causes conductivity failure between a light emitting device and a conductive land. In an LED light source of the present invention, an LED bare chip is mounted to conductive lands of a substrate, using bumps (55a, 55b). The LED bare chip (D65) is provided with a p-electrode (Lp) and an n-electrode (Ln) on a rear surface. The p-electrode (Lp) is larger in area than the n-electrode (Ln). The p-electrode (Lp) is bonded to a corresponding conductive land via four bumps (55a), whereas the n-electrode (Ln) is bonded to a corresponding conductive land via one bump (55b). A bonded area (Sn) between the n-electrode (Ln) and the bump (55b) is larger than a bonded area (Sp) between the p-electrode (Lp) and one of the bumps (55a).

The invention provides a main shaft grounding device which comprises a main shaft and a shell which sleeves the main shaft. The shell is provided with a main shaft grounding device which comprises a fixed plate and a movable plate. The fixed plate is fixedly connected with the shell. The bottom surface of the fixed plate is connected to the top surface of the movable plate through three paralelly arranged expansion springs. The bottom surface of the movable plate is provided with at least two carbon brush holders. Carbon brushes are fixed in the carbon brush holders, the bottoms of the carbon brushes are in contact with the outer surface of the main shaft, and the top of the carbon brushes are connected to a grounding wire. The main shaft grounding device has the advantages of a simple structure, a stable connection, convenient maintenance, and the long service lives of carbon brushes.

The invention relates to a contact finger for a fixed contact in an on/off circuit or a bus connecting device of a high-voltage switch equipment, wherein the high-voltage switch equipment relates to a circuit breaker, a load switch and a disconnecting switch. The contact finger is used for electric conduction contact between a moving contact and a fixed contact, has the advantages of small size, large contact area and good electric conductivity, and is also suitable for two occasions including static connection and sliding connection between the moving contact and the fixed contact.

The invention relates to an expansion joint with steel aluminum composite rails and double copper rings and belongs to equipment powered by third rails in urban rail transit. The expansion joint mainly comprises the left and right steel aluminum composite rails, fishplates and double-cooper-ring current compensator, the current compensator is provided with two juxtaposed copper rings: a lower copper ring 2 and an upper copper ring 3, and the steel aluminum composite rail is divided into a left steel aluminum composite rail 1 and a right steel aluminum composite rail 7 by means of Z-shaped wire-electrode cutting. The expansion joint with the steel aluminum composite rails and the double copper rings is small in initial slide starting force and high in reliability.

The invention discloses a bus duct structure, which comprises a shell with an opening formed in the bottom of the shell, and a cover plate mounted at the opening in the bottom of the shell. An inner cavity of the shell is divided into a left containing cavity and a right containing cavity from the middle. The left cavity and the right cavity are each internally provided with an m-shaped insulatingpart. Each insulating part is provided with two U-shaped containing grooves used for containing U-shaped conductors. A plurality of insulating supports distributed in the longitudinal direction of the shell are installed on the cover plate. Each insulating support is provided with supporting arm used for being supported at the lower end of the corresponding phase of a conductor. With the adoptionof the above structure, all conductors are in large-area contact with the shell or the shell at the part of a ground wire, so that the heat dissipation performance is improved. In addition, due to the arrangement of a protruding structure, the stable stress is guaranteed. The connection reliability is improved. Meanwhile, the bus duct is reasonable in overall structural design, easy in connectionand installation, convenient in insertion and connection and very high in conductive reliability.

The invention provides a rotary conductive apparatus. The rotary conductive apparatus comprises a cup body and a conductive rod, wherein liquid-state metal is arranged in the cup body; a first wiringend is arranged at the bottom end of the cup body; the first wiring end is used for connecting a first workpiece; the conductive rod is used for transmitting electric energy; the bottom end of the conductive rod is placed in the liquid-state metal; a second wiring end is arranged at the top end of the conductive rod; and the second wiring end is used for connecting a second workpiece. According tothe rotary conductive apparatus provided by the invention, the cup body and the conductive rod are connected with different workpieces; the bottom end of the conductive rod is placed in the liquid-state metal; the electric energy transmitted by the conductive rod is transferred to the cup body through the liquid-state metal, so that electric energy transmission between workpieces in different working states can be realized; and in addition, by adoption of the liquid-state metal conductive mode, the apparatus is high in conductive reliability and easy to maintain, and accessories can be replaced easily.

The invention belongs to the technical field of 3D printing, and discloses a 3D printing device for embedded circuit products. The 3D printing device comprises a rack, a printing platform, a first printing mechanism, a second printing mechanism and a milling module, the rack is provided with an X-axis guide rail, a Y-axis guide rail, a Z-axis guide rail, a first driving mechanism, a second driving mechanism, a third driving mechanism and a fourth driving mechanism; the first driving mechanism is used for driving the first printing mechanism and the second printing mechanism to slide along the X-axis guide rail; the second driving mechanism is used for driving the X-axis guide rail to slide along the Y-axis guide rail; the third driving mechanism is used for driving the printing platform to ascend and descend along the Z-axis guide rail; and the fourth driving mechanism is used for driving the milling module to slide along the Y-axis guide rail. The printing method of the embedded circuit products can be used for printing combination of different materials, the combination effect is good, and the conductive reliability is high.

Provided is a method for processing or manufacturing a printed circuit board in which it is possible to form a via hole in which the top diameter is reduced and the difference between the top diameter and the bottom diameter is smaller. Also provided is a resin laminate used in this method. A printed wiring board resin laminate including a resin insulating layer for forming a fine via hole and a release film for laser attenuation laminated on the resin insulating layer, wherein the thickness of the release film for laser attenuation is set to over 50 [mu]m and no more than 180 [mu]m, making it possible to form a via hole having a top diameter of 30 [mu]m or less and a difference between the top diameter and the bottom diameter of 10 [mu]m or less.

The invention provides a double-power warming lamp embedded with two heating lamp wires and used for a bathroom warmer or an integrated suspended ceiling. Aiming at the problems of the existing warming lamp has only one lamp wire and the power is fixed and not adjustable, a double-power warming lamp capable of changing the heating power based on the environment temperature is provided. The double-power warming lamp changes the structure that the warming lamp with a conventional screw structure only has one lamp wire and two conductive contacts; by adding the lamp wire and corresponding conductive contact and a wiring terminal, the double-power warming lamp can respectively control the lightening of two lamp wires with different powers to work and heat through two independent power supply circuits, can select the different heating power based on the environment temperature, and can provide options of three gears of warming power to meet the warming requirements of different seasons and north and south difference. The double-power lamp wire can work selectively, thereby having good energy saving effect and reducing the unnecessary power consumption and energy waste.

The invention relates to an aluminum-based tapping type power transmission bus sectional material. The aluminum-based tapping type power transmission bus sectional material is characterized in that the section of the sectional material is square; thread holes or straight holes are formed in upper and lower panels; a cavity is hollow; and heat dissipation fin structures, which are arrayed in parallel along the length direction of the sectional material and are convex, are arranged on the surfaces of the panels on the two sides.

The invention discloses a conductive insert installation tool for a lithium ion battery. The conductive insert installation tool at least comprises an upper holding rod, a lower holding rod, a pressing rod and a fixing rod, wherein the upper holding rod and the lower holding rod are used for bearing the palm holding force and arranged in parallel; the pressing rod is used for connecting the upper holding rod with the lower holding rod, the upper end of the pressing rod is fixedly connected with the side wall of the upper holding rod, and the upper holding rod is perpendicular to the pressing rod; the pressing rod is provided with a cavity with the open lower end, a sliding hole making the lower holding rod move conveniently in the axial direction of the pressing rod is formed in the side wall of the pressing rod, and the lower holding rod is movably connected with the pressing rod through the sliding hole; the fixing rod is used for being connected with a stud of the lithium ion battery, located in the cavity and fixedly connected with the lower holding rod; and the fixing rod is provided with a connecting cavity for being connected with the stud of the lithium ion battery and an internal thread is arranged on the inner wall of the connecting cavity. By the adoption of the technical scheme, a conductive insert and a battery part are assembled and the conduction reliability of a storage battery pack is greatly improved.