30results about How to "No poor contact" patented technology

The invention discloses an online measurement method and device for anode current of an aluminum electrolytic cell. The online measurement method comprises the following steps: setting a plurality of main measurement points on an anode beam bus bar or a riser bus bar so as to obtain voltage values of the main measurement points, establishing a resistance network of the beam bus bar according to Kirchhoff voltage and current laws, and calculating the flowing-in current of each anode by utilizing the values of obtained voltage or voltage difference values. The real-time online dynamic acquisition on the flowing-in current of each anode of the aluminum electrolytic cell can be realized by using the measurement method and the device. The long-time stable and reliable online acquisition on the anode current can be realized when the online measurement method and device are applied to the aluminum electrolytic cell.

The invention discloses a non-contact trigger type net-liked electronic drum, which comprises a drum disc, drum leather, a data acquisition module, and a data processing module. The drum leather comprises a drum ring and a drum surface. The drum ring fixes the drum surface on the drum disc. The data acquisition module comprises a trigger and a conductive medium. The drum surface is prepared by laminating three layers of meshes. The trigger comprises a PCB board and a Hall effect sensor chip arranged on the lower surface of the PCB board. The conductive medium is a magnetic part, which is arranged between the first mesh layer and the second mesh layer or the second mesh layer and the third mesh layer. The magnetic part is tightly clamped by two mesh layers and is arranged on the center of the drum surface. The PCB board is arranged in the drum disc and is right under the magnetic part. The Hall effect sensor chip is connected to the data processing module. The provided electronic drum has the advantages that the trigger does not contact with the conductive medium directly, the bad contact is avoided, and accurate audio signals can be generated.

The invention relates to a continuous remote transmission floater type level gauge, which comprises a floater and a magnetic connector, the continuous remote transmission floater type level gauge is characterized in that: the level gauge further comprises an electrically conductive or magnetically inductive and electrically conductive guide rail, and at least one guide rail is covered by an insulating layer and wound with resistance wires; the magnetic connector comprises an insulating case and a magnetic shaft or a metal shaft arranged horizontally; for the magnetic floater type level gauge, the magnetic connector further comprises a magnetic steel; the magnetic shaft or the metal shaft moves up and down along the guide rail with the up-and-down movement of the floater under the action of magnetic force; and a corresponding liquid level value is obtained by measuring a resistance value in a conducting loop consisting of the guide rail, the magnetic shaft or the metal shaft so as to realize continuous remote transmission of liquid level data. The continuous remote transmission floater type level gauge can further comprise a fixed slide pulley, a balance weight, a connecting rope or a balancing magnetic connector brought by connection. The continuous remote transmission floater type level gauge has remarkable characteristics of simple structure and continuous remotely transmitted signal.

The invention relates to a constant-voltage electric brush device of a motor, comprising a brush box, an electric brush mounted inside the brush box and a brush rod penetrating through the brush box. The brush box is fixed on the brush rod and screwed by nuts and tightening bolts; a constant-voltage spring which is a rigid spring is mounted at the rear part of the electric brush and can support the electric brush to get in contact with a collecting ring; since the constant-voltage spring is rigid, the curvature radius and the number of circles of the constant-voltage spring both can meet the requirement on rigidity, and especially when abrasion is generated, the electric brush generates tiny axial displacement, the pressure of the constant-voltage spring only changes slightly, but the pressure is still in an allowed pressure control range without causing poor contact between the electric brush and the collecting ring. Therefore, the electric brush and the collecting ring are in tight contact all the time to ensure the favorable operation of the motor.

It is an object of the present invention to provide an electric connector for a circuit board and an electric connector assembly including the same, the electric connector having a simple configuration, being easily handleable, and including terminals having connecting portions with which a shield body is not in contact while being in use.An electric connector (10, 50, 210, 310, 350) for a circuit board, capable of being mounted on a surface of a circuit board, includes a housing (11, 51) that is capable of being covered by a tube-shaped or cover-shaped electrically conductive shield body (90, 190, 290, 390); terminals (30, 70) each having a solder connecting portion and positioned on a side of the housing (11, 51) that is to be attached to the circuit board, the solder connecting portion being capable of being soldered to the circuit board; and electrically conductive shield bases (40, 80) attached to an outer surface of the housing (11, 51). Each shield base (40, 80) includes an attached portion (41, 81), a solder ground portion (42, 82), and a holding portion (43, 83).

Provided are: an active matrix substrate having a highly reliable wiring connection structure; a method for producing same; and a display device. A first metal wiring 122 and a second metal wiring 125are electrically connected via an IGZO layer 124 which has been made conductive. When the connection is formed, the second metal wiring 125 and an ITO layer 109 are separated and not being in contactwith each other since a passivation layer 107 and an organic insulating film 108 are formed between the second metal wiring 125 and the ITO layer 109. This configuration prevents contact failure dueto electric corrosion occurring between the ITO layer 109 and an aluminum layer 125a of the second metal wiring 125, and thus enables providing of a highly reliable wiring connection structure.

The invention discloses soft calendering roller equipment for improving the smoothness of paper and a soft calendering method. The soft calendering roller equipment comprises a soft calender roll device body, a hydraulic oil pump, hydraulic oil cylinders, an electromagnetic valve, a hydraulic oil pipe, a switching power supply, temperature control switches, electric heating pipes, a self-inductionpower generation heating mechanism, a pressure monitoring switch and a data processing module. The plurality of electric heating pipes are respectively arranged in an upper soft calendering roller outer layer and a lower soft calendering roller outer layer; the temperature control switches are respectively arranged in holes of the upper soft calendering roller and the lower soft calendering roller; shaft rods and bearings are arranged in the upper soft calendering roller and the lower soft calendering roller; a plurality of electromagnetic coils are respectively arranged on the inner layers of the upper soft calendering roller and the lower soft calendering roller; two permanent magnets respectively sleeve outside the shaft rods, the hydraulic oil cylinders are installed below the left side and the right side of the upper portion of the rack, the hydraulic oil cylinders are connected with the upper ends of bearing seats on the left side and the right side, the switching power supply and the data processing module are installed on a circuit board, and the pressure monitoring switch is installed below the bearing seat at the upper left end. The soft calendering method of the soft calendaring roller equipment is divided into four steps. According to the invention, the purposes of flattening, calendaring and shaping of finished paper are ensured.

An electronic contactless tapping switch for electric power transformer is characterized by use of solid relay. Its advantages are no mechanical operation, electric arc and flutter, high insulating performance and switching speed, small size and low cost.

The present invention discloses a waterproof and dustproof low-voltage switch cabinet, which comprises a cabinet body, a dustproof strip, a waterproof board and a water isolation foot support. A bus duct is disposed in the cabinet body, a main switch is disposed at lower end of the bus duct, a branch switch is disposed at lower end of the main switch, an isolating switch is disposed at lower end of the branch switch, a partition plate is disposed at lower end of the isolating switch, a ground bus is disposed under the partition plate, a ground switch is disposed at lower end of the ground bus,a wire inlet end is disposed on a side of the cabinet body away from the bus duct, and a current sensor is arranged on the wire inlet end away from a side of the bus duct. The switch cabinet has following beneficial effects: the switch cabinet realizes that the low-voltage switch cabinet is both waterproof and dustproof, ensures that the low-voltage switch cabinet does not cause an accident due to water leakage, does not cause aging of wires and poor contact due to a large amount of dust entering the switch cabinet, improves safety protection capability of the switch cabinet, and prolongs usage life and stability.

The invention relates to the technical field of washing machines, in particular to a waterproof main control panel of a washing machine. The waterproof main control panel comprises a decorative plateon the front side of the main control panel and a computer board box on the rear side of the main control panel. A computer board is arranged in the computer board box, the decorative plate is provided with a button, the rear side of the button penetrates the main control panel to contact with an elastic pad on the front side of the computer board box, and by pressing of the button, the elastic pad in deformation is enabled to contact with a control switch of the computer board. The waterproof main control panel comprises the computer board which is hermetically arranged through the elastic waterproof pad, the button structure is redesigned according to the integral structure to improve hand feeling of the button, and accordingly user experience is improved, and the waterproof main controlpanel is suitable for popularization and utilization.

The invention discloses an alternating-current sleeve structure. The alternating-current sleeve structure comprises a conductive tube, a conductive head which is in threaded connection with the head of the conductive tube, a cover plate, and an elastic plate and a pressing ring sequentially arranged above the cover plate; the conductive tube extends out of the cover plate; the pressing ring and the elastic plate are in a circular ring shape; an inner ring of the elastic plate is folded towards an outer ring to form a wave structure; the diameter of the inner ring of the elastic plate is consistent with the diameter of the conductive tube; the pressing ring is fixedly connected with the cover plate through a bolt and presses a plane between the outer ring of the elastic plate and the wave structure; symmetric open grooves are formed in the two sides of the conductive head; through holes penetrating through the wall thickness of the conductive head are formed in the side surfaces of theopen grooves; and nuts and screws are arranged on the through holes in a penetrating mode. According to the alternating-current sleeve structure, the conductive head and the conductive tube are lockedthrough the screws and the nuts; the influence of stress of a drainage bus and vibration of a main transformer on the tightness of threaded connection during operation can be eliminated; and poor contact between the conductive head and the conductive tube is avoided.

The invention relates to the technical field of electric connection, and especially relates to a data line and a preparation method of the data line. The data line comprises a first electric connection structure and a second electric connection structure. The second electric connection structure and the first electric connection structure are sleeved and electrically connected, and the first electric connection structure and the second electric connection structure are rotatably connected. The invention provides a preparation method of a data line. The data line and the preparation method of the data line provided by the invention have the advantages that the joint is not easy to lose and can rotate at any angle.

The invention discloses standardized cable digital television monitoring front-end equipment. The standardized cable digital television monitoring front-end equipment comprises a shell, a first panel, a second panel and a fastening device, the first panel is mounted on the shell through the fastening device; the second panel is arranged on the shell and is opposite to the first panel; a guide rail is arranged on the inner wall of the shell; the back plate is located in the inner cavity of the shell, the unplugging assisting devices are arranged on the function board cards, and the back plate is installed in the inner cavity of the shell through the guide rails and located between the first panel and the second panel; one end of the functional board card is mounted in a clamping groove in the shell through the unplugging assisting device, and the other end of the functional board card is mounted on the back plate through a pinhole connector; the case cover does not need to be detached, and the replacement time is saved.