95results about How to "Guaranteed contact pressure" patented technology

The invention provides a high-temperature-resistant floating welding type radio-frequency coaxial cable connector. The high-temperature-resistant floating welding type radio-frequency coaxial cable connector comprises a shell, a ceramic insulator, an outer contact element, two inner contact elements, two springs, an inner conductor, a ceramic supporting piece and a welded tube, wherein the inner conductor, the ceramic insulator and the shell are sequentially nested in a close fit mode from inside to outside, the ceramic insulator is axially fixed by the outer contact element, the front end and the rear end of the inner conductor are respectively provided with one inward-concave insertion hole, and the two springs are arranged in the two inward-concave insertion holes respectively. The high-temperature-resistant floating welding type radio-frequency coaxial cable connector is simple in structure and ingenious in design, will not soften or deform at a high temperature due to the adoption of a high-temperature-resistant ceramic insulation material, and prevents the situations that a connection mechanism between a cable and a female connector becomes poorer in retentivity at a high temperature and normal signal transmission is affected.

A moving contact assembly of a molded case circuit breaker comprises a rotary shaft rod, a moving contact, a pair of connecting rods and a pair of springs, wherein the rotary shaft is provided with an opening and a pair of symmetrically arranged arc-shaped linear movement guide grooves; the moving contact is rotationally connected with the rotary shaft rod through a rotary shaft; the two ends of the moving contact lean out of the opening of the rotary shaft rod; the two ends are respectively provided with a moving contact; the pair of connecting rods are symmetrically arranged; one end of each connecting rod is connected with the two side surfaces of the moving contact while the other end is connected with a sliding pin, wherein the two ends of the sliding pin pass through the arc-shaped linear movement guide groove and span the two side surfaces of the rotary shaft rod; and the pair of springs are symmetrically arranged on the two side surfaces of the rotary shaft rod; the two ends of the pair of springs are respectively connected with the two sliding pins. Compared with the prior art, the moving contact assembly of a molded case circuit breaker provided by the present invention can rapidly finish circuit transformation with high efficiency.

An electrical heating apparatus has: a fin brazed on at least one of a main body upper wall and a main body lower wall of a tube; an insertion unit having an electro-heat-generating element pressure-welded to a wall of one of the main body upper wall and the main body lower wall; and an edge part projected in the width direction from each of main body vertical walls to form an edge space. The edge space is formed so as to be continuous with the insertion space and is smaller in thickness dimension than the thickness dimension of the insertion unit.

The invention relates to the technical field of draw-out switch equipment, in particular to a plug unit for a main circuit connector, which comprises a fixed bracket, paired plug conducting strips, spring pieces and cylindrical pins; the paired plug conducting strips are inserted in the fixed bracket; the socket ends of the paired plug conducting strips are separated into socket openings; the cylindrical pins are fixed to the fixed bracket and are located between the paired plug conducting strips; the plug conducting strips are provided with arc grooves matched with the cylindrical pins, and the plug conducting strips arranged at the left and right sides take the cylindrical pins as deflection centers; the spring pieces are disposed among the outer side surfaces of the plug conducting strips and the fixed bracket; and a compact force is formed between the paired plug conducting strips. The plug unit for the main circuit connector has the advantages that: friction force of the connector opened by expansion is reduced by cooperation of the cylindrical pins and the plug conducting strips, so that the plug unit has high reliability and large contact pressure.

The invention relates to the technical field of the high-voltage device, and discloses a DC breaker based on a dual-coil monostable permanent magnet mechanism. The DC breaker comprises a vacuum arc-extinguishing chamber; a static contact and a movable contact are arranged in the vacuum arc-extinguishing chamber from top to bottom, the bottom surface of the movable contact is connected with a movable conducting rod; the movable conducting rod is connected with a dual-coil repulsion mechanism through a spring steering mechanism, the dual-coil repulsion mechanism is connected with a permanent magnet mechanism through a switch-off maintaining spring, and a switch-off buffer is arranged below the permanent magnet mechanism; the switch-off maintaining spring is used for providing the switch-offmaintaining force, the permanent magnet mechanism is used for providing a switch-on maintaining force, the spring steering mechanism is used for providing the switch-on assisting force in the switch-on, thereby increasing the contact pressure of the movable contact and the static contact; the dual-coil repulsion mechanism is used for providing the starting acting force of the switch-off and the starting acting force of the switch-on through the electromagnetic induction; and the switch-off buffer is used for absorbing excessive kinetic energy in the switch-off process. The DC breaker disclosedby the invention is simple and reliable, convenient for application, and has good in market promotional value.

The invention relates to a backlight module lighting fixture. The backlight module lighting fixture comprises a soleplate (1), a product fixture (2) and a lighting pressure head part (3), wherein the product fixture is installed on the soleplate, the lighting pressure head part is installed on the product fixture, and the backlight module lighting fixture is characterized in that the lighting pressure head part (3) comprises a base (301), wherein the base (301) is symmetrically installed on a guide rail (302), two sides of a U-shaped pressure head (303) are installed on the guide rail (302) and can move up and down, the bottom of the U-shaped pressure head (303) is connected with an oblique surface push block (305), a slide block (306) is installed in a groove on the base (301), the oblique surface push block (305) moves downwards to push the slide block (306) to move towards a gold finger so as to enable the gold finger to be aligned; a lighting electrode (307) is installed on an electrode base (308); a lower magnetic block (310) is installed on the base (301), and an upper magnet (311) is installed on the lower bottom surface of the U-shaped pressure head (303). By adopting the backlight module lighting fixture, the one-time lighting success rate can be increased, and the one-time lighting success rate can reach more than 99 percent.

The invention relates to a socket type ground fault circuit interrupter, which comprises a reset key, a reset mechanism, a conductive component from a power input side to a load side, a leakage signal detection circuit, and an electromagnetic trip mechanism controlled by the leakage signal detection circuit to act, wherein the reset mechanism comprises a reset bracket and a bracket reset mechanism. A short-circuit conducting strip supported by an elastic piece is arranged on the reset bracket, and the contact pressure between a movable contact and a stationary contact is guaranteed, so that the contact resistance is low, and even if the stationary contact setting position is slightly deviated, the short-circuit conducting strip can be self-adjusted and self-adapted, and the operating reliability is improved. In addition, the socket type ground fault circuit interrupter is provided with a reverse wiring protection device comprising an electrically controlled normally closed reverse protection switch, a reset key locking mechanism and a control circuit, so that when the circuit is reversely connected, power is not output from the socket type ground fault circuit interrupter, the prompt and safety protection functions are realized, and the potential safety hazard is eliminated.

One electric socket is provided, which can ensure the contact pressure between the contact terminal and the electric part and has a casing suitable for automatic installation and capable of fixing the contact terminals reliably without interfering the insertion of the electric part. The electric socket comprising one casing with opening for the electric part with contacts to be inserted and several connecting terminals has one adsorbing plane in the bottom of the casing for automatic installation, and one holding part with one lower part around the adsorbing plane and one upper opening, with the adsorbing plane having one auxiliary adsorbing plane raised to the opening of the holding part. Each of the connecting terminals has one side wall fixing part on the casing, and the side wall of the casing has corresponding inserted part for the fixing part of the pressed connecting terminal to be exposed via the opening.

The invention discloses a hydraulic device for adjusting the ascending and descending proportions of a snow-removing roll brush. The device comprises a metering pump, a combined electromagnetic overflow valve, a coarse oil filter, a fine oil filter with an oil stain display, three two-position three-way electro-hydraulic proportional valves, two balance valves, a two-position two-way floating valve, four oil cylinders, three oil pressure sensors, three oil cylinder position sensors and a set of PLC (Programmable Logical Controller) control system for electro-hydraulic control. According to the device, a roll brush elevating mechanism can be controlled to adjust the ascending and descending distances proportionally, effective contact between the roll brush and the ground as well as between support wheels and the ground is adjusted automatically according to the pressure of a roll brush motor, the snow-removing quality is improved, and adaptation to removing snow on road surfaces of different flatness is achieved.

A loading adjustable surface sound wave actuating device includes: a positioning platform with a sliding bearing at each of the opposite sides, a surface sound wave actuating device set on the platform between the two sliding bearings which can generate a preset surface sound wave on its top surface, a slide block on the platform having a force part contacting with the top surface of the actuator and two positioning parts set in the sliding bearings in which the sound wave of the actuator drives the block to shift, a supporting structure applying a preset force to the positioning part of the block, thus the contact pressure between the block and the actuator is kept at a constant value.

The present invention discloses a power supply terminal and a charging gun head. The power supply terminal comprises a hollow arranged terminal expand tube, a terminal core rod axially mounted in theterminal expand tube, an insulation head fixedly installed at the end portion of the terminal core rod and an elastic piece fixed between the terminal core rod and the terminal expand tube. The powersupply terminal comprises a first state when the elastic piece is compressed and a second state when the elastic is in normal state, and the length of the terminal core rod stretching into the terminal expand tube in the first state is larger than the length of the terminal core rod stretching into the terminal expand tube in the second state. The power supply terminal is arranged to reduce the plugging force of the charging gun head and relieve the labor intensity when plugging is performed; the terminal expand tube can reduce the friction prior to expansion of the terminal expand tube; and the terminal expand tube can ensure the contact pressure after the expansion of the terminal expand tube so as to ensure the heavy current conduction current effect.

The present invention discloses a novel double-column vertical open type outdoor high-voltage AC disconnecting switch. The switch comprises a bottom frame, a first pillar insulator, a second pillar insulator, a conductive loop, a static side contact socket, and a movable side contact socket. The conductive loop comprises a conductive blade, and the conductive blade is provided with a self-lockingdevice; a latching device is arranged above the second pillar insulator and on one side of the static side contact socket away from the movable side contact socket, and the side surface of the latching device is provided with a concave latching groove; the position of the concave latching groove is engaged with a hook body; the hook body is internally provided with a stainless steel leaf spring; the conductive loop adopts a fully enclosed structure; all conductors of the conductive loop are enclosed inside the insulating material; and a static contact, a static side wiring board and a movableside wiring board are installed in the insulator. According to the technical scheme of the present invention, the stainless steel leaf spring is arranged in the hook body, so that influence on the rotation sensitivity of the hook body caused by the exposure of the stainless steel leaf spring to the wind and rain can be avoided; and by using the fully enclosed structure of the conductive loop, short circuits caused by birds and foreign objects can be avoided.

The present invention pertains to a copper alloy for electrical and electronic equipment, a copper alloy thin sheet for electrical and electronic equipment, and a conductive part and terminal for electrical and electronic equipment. The copper alloy for electrical and electronic equipment contains more than 2.0 mass% to 15.0 mass% of zinc, 0.10 mass% to 0.90 mass% of tin, 0.05 mass% to less than 1.00 mass% of nickel, 0.001 mass% to less than 0.100 mass% of iron, and 0.005 mass% to 0.100 mass% of phosphorus, with the remainder comprising copper and unavoidable impurities. The copper alloy satisfies 0.002 ≤ Fe/Ni < 1.500, 3.0 < (Ni + Fe)/P < 100.0, and 0.10 < Sn/(Ni + Fe) < 5.00 in terms of atomic ratios. The yield ratio (YS/TS), which is calculated from the tensile strength (TS) and 0.2% offset yield strength (YS) when a tension test is performed in a direction parallel to the rolling direction, is over 90%.

The invention discloses a fast and efficient plastic welding device, relates to the technical field of plastic welding equipment, and mainly solves the problem that a welding part is rugged due to theuse of an existing device. The fast and efficient plastic welding device comprises a base plate, a fixture and workpieces, wherein a door-shaped frame is welded and fixed to the upper surface of thebase plate; bidirectional screw rods are rotatably arranged on two sides of the door-shaped frame through bearings; an upper installation plate and a lower installation plate are arranged on screw-thread sections at the upper ends and the lower ends of the two bidirectional screw rods; electric push rods are arranged on two sides of the upper surface of the lower installation plate; annular installation shells are arranged at the end parts of telescopic rods of the two electric push rods; and a floating device and a scraping device are arranged on the inner wall of an installation ring. According to the fast and efficient plastic welding device provided by the invention, a first motor, the bidirectional screw rods, the upper installation plate and the lower installation plate are arranged,so that the two workpieces can tightly contact, and a welding effect is ensured; the annular installation shells, the installation ring, a second motor, a gear, an outer gear ring, the floating device and the scraping device are arranged, so that plastics at the welding part of the two workpieces can be floated, burrs can be scraped, and the smoothness of a welding groove is ensured.

The present invention pertains to a copper alloy for electrical and electronic equipment, a copper alloy thin sheet for electrical and electronic equipment, and a conductive part and terminal for electrical and electronic equipment. The copper alloy for electrical and electronic equipment contains more than 2.0 mass% but less than 23.0 mass% of zinc, 0.10 mass% to 0.90 mass% of tin, 0.05 mass% to less than 1.00 mass% of nickel, 0.001 mass% to less than 0.100 mass% of iron, and 0.005 mass% to 0.100 mass% of phosphorus, with the remainder comprising copper and unavoidable impurities. The copper alloy satisfies 0.002 ≤ Fe/Ni < 1.500, 3.0 < (Ni + Fe)/P < 100.0, and 0.10 < Sn/(Ni + Fe) < 5.00 in terms of atomic ratios. The content of hydrogen is not more than 10 mass ppm, the content of oxygen is not more than 100 mass ppm, the content of sulfur is not more than 50 mass ppm, and the content of carbon is not more than 10 mass ppm.

The invention relates to a vacuum arc-extinguishing chamber with a composite contact structure. The vacuum arc-extinguishing chamber comprises: a static contact structure which comprises a static main contact, a static arc contact and a static end corrugated pipe, wherein the static arc contact is movably assembled in the static main contact, and the static end corrugated pipe applies an elastic reset acting force to the static arc contact; and a moving contact structure which comprises a moving main contact, a moving arc contact and a moving end corrugated pipe. The moving arc contact is movably assembled in the moving main contact; and the moving end corrugated pipe applies an elastic reset acting force to the moving arc contact to force the moving arc contact to move towards the static arc contact. The static end corrugated pipe and the moving end corrugated pipe are utilized to enable the static arc contact and the moving arc contact to move relative to the corresponding main contacts, and the protruding amount of the two arc contacts relative to the main contacts is offset by the two arc contacts, so compared with a scheme for offsetting only depending on the movement of the static arc contact, the scheme using the two arc contacts to act can effectively reduce the moving distance of the static arc contact, reduce the overtravel condition of the vacuum arc-extinguishing chamber and lower the requirement for the installation place of the vacuum arc-extinguishing chamber.