3507results about "Emergency protective devices" patented technology

An electronic fuse includes a housing, a first housing terminal and a second housing terminal. The electronic fuse further includes a circuit breaker including a first terminal of the circuit breaker and a second terminal of the circuit breaker. The first terminal of the circuit breaker is electrically connected to the first housing terminal of the electronic fuse. The second terminal of the circuit breaker is electrically connected to the second housing terminal of the electronic fuse. A thermal protection is arranged in a current path between the first housing terminal and the second housing terminal in series with the circuit breaker. The thermal protection interrupts the current path when a temperature of the circuit breaker or a temperature within the housing of the electronic fuse and / or a temperature of the housing of the electronic fuse exceeds a switch-off temperature.

The invention provides an excitation fuse with active and passive integrated protection and a related device. The excitation fuse is applied to a protected circuit. The active and passive integrated protection excitation fuse comprises a fuse shell, an impact device, a first melt, a second melt, a first conductor, a second conductor and at least one excitation source, the excitation fuse is connected in series in a protected circuit through the first conductor and the second conductor; the first melt and the second melt are connected in parallel between the first conductor and the second conductor; when the voltage of the first melt is higher than the trigger voltage of any excitation source in the at least one excitation source, the corresponding excitation source is triggered to release high-pressure gas into the penetrating cavity; or any excitation source in the at least one excitation source releases the high-pressure gas into the penetrating cavity when receiving the control signal of the control circuit; and then the impact device is pushed to impact the first melt and / or the second melt along the movable cavity so as to cut off the first melt and / or the second melt.

A steering device 1 accepts steering operations by a driver and comprises: an annular rim 20; a hub 23 located on the inner side of the rim 20; spokes 25L, 25R which extend radially from the hub 23 and which are connected to a rim inner circumference 21 of the rim 20; electrode devices 55L, 55R provided in the spokes 25L, 25R, respectively; and a steering control device 4 that detects a change in the electrostatic capacitance between the electrode devices 55L, 55R and a ground connection. The electrode device 55L comprises a first electrode 56L having flat parts 561L, 562L, 563L directed toward the rim 20 and the electrode device 55R comprises a first electrode 56R having flat parts 561R, 562R, 563R directed toward the rim inner circumference 21.

The invention provides a vertical fuse which comprises a fuse tube body and a fuse body, a first containing cavity is formed in the fuse body, a first through hole and a second through hole are formed in the first end face of the fuse tube body, the first end face of the fuse body penetrates out of the first through hole to form a first electrode, and the second end face of the fuse body penetrates out of the second through hole to form a second electrode; the maximum diameter of the first end face of the fuse tube body and the maximum diameter of the second end face of the fuse tube body are both smaller than the length of the fuse tube body in the first direction. The first end face is parallel to the second end face, and the first direction is the direction from the first end face to the second end face or from the second end face to the first end face; the first accommodating cavity is filled with an arc extinguishing medium, and the arc extinguishing medium wraps the melt. Therefore, the electrodes are arranged on the same end face of the fuse tube body, so that the area of a fused mounting surface is reduced, the transverse projection area of the fuse in a circuit is further reduced, and the longitudinal space utilization rate of equipment is improved.

The invention relates to the technical field of fuses, and discloses a novel high-voltage fuse, which comprises a fuse mechanism and a control module, and is characterized in that the control module is electrically connected with the fuse mechanism; the fuse mechanism comprises a contact part, an exhaust contact seat part, an insulator, a fuse carrying part and a fiber grating sensor, the lower part of the insulator and the lower part of the fuse carrying part are connected through the exhaust contact seat part, the fiber grating sensor is located in the fuse carrying part, and the upper part of the insulator and the upper part of the fuse carrying part are connected through the contact part. According to the invention, the sensing precision of the operation state of the fuse is improved.

The invention provides an active and passive integrated protection intelligent fuse with a single excitation source. The active and passive integrated protection intelligent fuse comprises a first conducting bar, a signal melt, a second conducting bar, a circuit board and an excitation source, the circuit board is provided with the relay and the excitation source. The relay is connected with an external control unit, the excitation source, the first conducting bar and the second conducting bar. The first conducting bar, the signal melt and the second conducting bar are connected in sequence; an isolating layer is arranged on the relay, and the isolating layer is used for shielding crosstalk of external voltage on the relay; after a plurality of pins of the relay are welded on the circuit board, an insulation processing mode is adopted among the plurality of pins; and in an inspection working condition, the external control unit outputs a first inspection signal to the relay so as to control the relay to be switched into an inspection state, and feeds back the working state of the excitation source to the external control unit.

The invention discloses an electric intelligent monitoring drop-out fuse, and relates to the technical field of protection fuses. The electric intelligent monitoring drop-out fuse comprises an insulating pillar and an isolation arc protection device arranged at the top end of the insulating pillar, and further comprises a fuse carrier support installed at the bottom end of the insulating pillar; the fuse carrier is arranged on one side of the insulating support, and the bottom end of the fuse carrier is rotationally connected with the bottom end of the insulating support through a fuse carrier support; the push-pull type driving mechanism is mounted and sleeved on the insulating support column, and drives the fuse carrier to swing in a push-pull manner; the push-pull type driving mechanism is driven by an impact type driving assembly to slide. The opening and closing driving mode of the fuse is improved, push-out is carried out by adopting a concave-convex wheel impact mode, the opening speed is high, rapid disconnection can be realized, meanwhile, a force storage structure is also arranged for storing force and releasing the force during opening and push-out, the impact type driving assembly can be further assisted to apply driving force, the opening speed is further accelerated, and the response speed is high.

A functional module F is presented for coupling to an electrical / electronic switching device S, which functional module F can be influenced by means of an actuating element B, the electrical / electronic switching device S and a radio transmitter, wherein the functional module F has components necessary for its function on at least one electrical circuit board, and wherein the functional module F has at least one functional module-side interface CF connected to the electrical circuit board, which is suitable for interaction with a switching device-side interface CS, via which interfaces CF, CS actuators, for example lights, blinds or sockets, can be controlled, or sensors, for example touch sensors, can be evaluated, and whereby a control signal is transmitted between the functional module F and the electrical / electronic switching device S, wherein the functional module-side interface CF has an output channel for providing the control signal,which can be influenced both via the radio transmitter and via the actuating element OA, , What is special is that the function module F with its function module-side interface CF can be inserted into the switchgear-side interface CS in the manner of a plug-in connector, and that the function module F has a defined cabling so that the function module F can be influenced by means of the actuating element OA and radio transmitter for influencing actuators, wherein the function module F has recesses that can be engaged with projections HV of the electrical / electronic switchgear S.

The invention relates to the technical field of state monitoring, in particular to an intelligent fuse comprising a monitoring module, and the fuse comprises a data analysis module, a steady state recognition module, a temperature analysis module, a coupling calculation module and a state calibration module. According to the method, time consistency verification and corresponding matching are carried out on temperature and current sampling, abnormal interference is eliminated in a stable current-carrying interval, a continuous sequence is formed, and a definite time relation is established between thermal response and a current-carrying state by combining analysis of accumulated deviation and change turning of the temperature along with time; the abnormal trend of slow evolution is amplified and presented, correction is carried out according to the direction consistency of multi-segment time difference change, progressive features before fusing are recognized in advance, early warning continuity and operation decision reliability are improved, misjudgment is reduced, continuous updating of state evaluation is supported, and stability of a control closed loop is improved.

The steering device 1 is equipped with: a steering wheel 2 provided with a rim section 20and spoke sections 25L and 25R; electrode devices 6L, 6R; and a steering control device 4for detecting a change in the capacitance of the electrode devices 6L, 6R. The electrode devices 6L, 6R are respectively equipped with a first electrode section 61L, 61R provided to a spoke connection section 22L, 22R and which constitutes part of an inner-circumferential rim section 21. Radially outermost sections 613L, 613R, which are the sections of the first electrode sections 61L, 61R farthest from the center, are positioned to the outside in the radial direction of arc-shaped imaginary lines L1, L2 which contact the contour line of the inner-circumferential rim section 21 above the spoke sections 25L, 25R and the contour line of the inner-circumferential rim section 21 below the spoke sections 25L, 25R.

A fuse group assembly may include a first bus bar, a second bus bar in a stepped arrangement with the first bus bar, a first support plate arranged on the second bus bar, a second support plate in a stepped arrangement with the first support plate, a first fuse having a first end electrically connected to the first bus bar and a second end supported by the first support plate, and a second fuse having a first end electrically connected to the second bus bar and a second end supported by the second support plate.

A method operable by a controller of a static transfer switch (STS) is provided. The STS includes first and second inputs selectively coupled with first and second power sources via first and second circuit breakers, respectively, an output coupled with a load, first and second bypass breakers selectively coupling the first and second inputs, respectively, with the output, at least one removable power stage module including first and second power stages configured to conduct electrical power when active, first and second contactors selectively coupling the first and second inputs with the first and second power stages, respectively, and a load switch selectively coupling the first and second power stages with the output. The method includes modifying an operating state of the first and second contactors and the first and second power stages to implement a bypass operation and an un-bypass operation of the STS in response to a trigger condition.

The utility model discloses a novel drop-out fuse, which belongs to the field of drop-out fuses and comprises a high-strength insulator, the upper end of the high-strength insulator is provided with an upper wiring terminal, the lower end of the high-strength insulator is connected with a lower wiring terminal, the upper wiring terminal is provided with a connecting buckle, and the lower wiring terminal is connected with a rotary connecting frame. Through the installation structure, the installation plate is installed on the fixing frame through the rotating seat, rotation adjustment can be carried out when needed, the use flexibility of the whole drop-out fuse is improved, the inserting groove is formed in the rotating seat and used in cooperation with the limiting inserting rod, angle adjustment of the drop-out fuse can be carried out according to a specific angle, and the safety of the drop-out fuse is improved. And the hexagonal block at the end part of the limiting insertion rod is connected with the threaded seat through the threaded groove, so that the connection stability of the limiting insertion rod can be ensured, and the looseness of the drop-out fuse caused by the falling of the limiting insertion rod is avoided.

A push button switch includes a push button, a movable contact that moves together with the push button, and a fixed contact with respect to which the movable contact comes into contact or separates in accordance with the operation of the movable contact. The push button switch includes a light emitting element, and a light receiving element. A light emitting position where light emitted from the light emitting element is radiated to the outside, and a light receiving position where light detected by the light receiving element is received from the outside are disposed outward of an edge of the push button when viewed in a pushing direction. The light receiving element is disposed to detect light emitted from the light emitting element and reflected by an object in a detection region set in a space on the push button side in the opposite direction to the pushing direction.

The invention relates to a connecting device (1) for electrically connecting at least two terminals, comprising: - at least one connecting element (2) designed for conducting current between the at least two terminals, with at least two contact areas (2a, 2b) for electrical and mechanical connection to the respective terminal, wherein the connecting element (2) comprises a metallic material (3) and a passivation layer (4) that forms at least in one fault condition and encloses the metallic material (3), and - a flux (8) that can be thermally activated by heat input due to a fault condition, which is designed to remove the passivation layer (4) in order to cut through the connecting element (2) in the molten area (2c) in the case of a fault condition that melts only the metallic material (3).

The invention discloses an ultra-miniature patch fuse structure and a production process thereof. A fuse comprises a ceramic substrate, an inner electrode part, a terminal electrode part, a fuse wire part and a covering protection layer. An inner electrode groove is formed in the side wall of the ceramic substrate, and the inner electrode part comprises a first inner electrode and a second inner electrode; the first inner electrode and the second inner electrode are respectively provided with a fuse wire fixing groove. According to the production process, inner electrode grooves are formed in the two ends of a ceramic substrate, a first inner electrode and a second inner electrode are constructed through metallization wall-hanging treatment, a fuse part is inserted into a fuse fixing groove and connected through thermal ultrasonic or hot pressing bonding, and a protection layer is printed and cured to enhance the insulation performance. According to the invention, through cooperation of the fuse wire fixing grooves, accurate limitation and anti-drop protection of fuse wire component connection points are realized, and the structural stability and the electrical connection reliability between the fuse wire component and the first inner electrode and between the fuse wire component and the second inner electrode are improved.

The invention provides an excitation fuse with a tubular structure, which comprises a closed insulating shell, and a first connecting end and a second connecting end are arranged at two ends of the insulating shell; a closed cavity is formed in the insulating shell, a movable block and two limiting parts with conductive performance are arranged in the closed cavity, a limiting gap is formed between the two limiting parts, and the two limiting parts are electrically connected with the first connecting end and the second connecting end respectively; the movable block comprises a first end and a second end which are opposite, and the first end is provided with an excitation source; the two sides of the second end are in tight fit connection with the two sides of the limiting gap respectively, and the two limiting parts are in conductive connection through the second end; a receding space is formed between the second end and the inner wall of the closed cavity. According to the tubular structure excitation fuse with the structure, the filling amount of an excitation source can be effectively reduced, and the design difficulty of the insulating shell is reduced; in addition, the melt part is compact in overall structure and convenient to use in occasions with strict space requirements.

The invention provides an intelligent fuse, and belongs to the technical field of circuit protection, and the intelligent fuse is characterized in that an upper housing is provided with at least one excitation chamber, the excitation chamber is internally provided with at least one excitation part and at least one impact part, and the excitation part releases high-pressure gas when receiving any one of an external trigger signal and an internal trigger signal; the lower shell is provided with at least one cooling cavity; the current-conducting plate is arranged between the upper shell and the lower shell, and the impact part moves towards the direction where the cooling cavity is located under the thrust action of the high-pressure gas so as to cut off the current-conducting plate; the self-control module is arranged outside the shell and comprises a current detection unit and a processing unit, and the current detection unit is used for detecting a current signal on the conductive plate; the processing unit is used for generating an internal trigger signal according to the current signal. The beneficial effects of the invention are that a dual-trigger mechanism and redundancy design of an internal trigger signal and an external trigger signal are adopted, so that normal action can still be ensured when any signal fails, and the breaking reliability is improved.

A pressure-actuated switch having a pressure port, a diaphragm, a range spring, an actuator plate, a differential plate, and an electrical switch. A certain pressure level moves the diaphragm against the range spring at the pressure port and thus deflects the actuator plate. The actuator plate is coupled to the electrical switch via a snap spring, wherein the electrical switch can be switched on or off via the deflection of the actuator plate and the snap spring. The differential plate controlled by a differential spring is connected to the actuator plate and supports the actuator plate in a first portion of movement, wherein the differential plate is decoupled from the actuator plate in a second portion of movement of the actuator plate.

A protective element includes: a fuse element including a first end portion and a second end portion; first and second insulating members each having an opening or a separation part, the first and second insulating members being disposed in a state proximal to or in contact with the fuse element; a shielding member movable in a moving direction that allows the shielding member to insert into the opening or the separation part so as to divide the fuse element; a locking member that suppresses movement of the shielding member; a pressing member that press the shielding member; and a heat-generating body configured to heat the locking member or a fixing member of the locking member. The fuse element further includes a cutoff portion for cutting off a current path between the first end portion and the second end portion.

An underarm gang operated vacuum break switch (underarm switch) has an electrically live portion under a mounting arm, which provides advantages over the standard vacuum break switch, which have the electrically live portion above the mounting arm. Because the non-electrified mounting arm is above the electrified portion, the underarm switch is safer for perching birds and other wildlife. The nature of the underarm switch also provides other benefits including a disconnect blade that when opened creates a visual gap to ensure electrical discontinuity along with a safety locking arm tied to deactivating the underarm switch. Adding to the safety measures is a visual indicator that shows an electrician when the switch is live and safe to open the disconnect blade. Other safety measures include a shock absorber assembly and inertia slowing mass protecting electrical contacts within the vacuum break switch from failing.

The invention discloses a spring-free magnetic springback type switch key, which comprises a shell, a shaft rod inserted into the shell, a magnetic column arranged in the shaft rod, an electromagnetic coil positioned in the shell and arranged outside the shaft rod in a surrounding manner, and a trigger assembly mounted in the shell and matched with the shaft rod, the shaft rod is provided with a hollow column body extending downwards, and the magnetic column is located in the hollow column body; an annular wall is arranged on the inner bottom face of the shell in an upward protruding mode, a guide groove matched with the hollow column in the shaft rod is formed, and the guide groove is used for conducting linear guiding on relative matching of the hollow column. And the electromagnetic coil is sleeved outside the ring wall. According to the switch key, the electromagnet is matched with the magnet, rebounding of the key is achieved through magnetic force, and the intensity of feedback force is flexibly changed by adjusting the magnetic force of the electromagnet.

A protection device includes a meltable conductor, an electrode set, and a heating element. The meltable conductor has a core metal layer and a bottom covering layer with low melting point. The core metal layer has a first low melting point metal layer, a second low melting point metal layer, and a high melting point metal layer laminated therebetween. The bottom covering layer with low melting point is disposed on a bottom surface of the core metal layer. The electrode set has a first electrode and a second electrode respectively connected to two terminals of the meltable conductor. The heating element is disposed under the bottom covering layer, thereby heating up and blowing the meltable conductor in the event of over-voltage.

The invention discloses an intelligent fuse with a fault location function, and relates to the technical field of fuses. The device comprises an insulating assembly, an insulating column, two first rainproof covers which are located at the upper part of the insulating column and are arranged in a right-angle manner, two second rainproof covers which are located at the lower part of the insulating column and are arranged in a right-angle manner, and a linkage switching assembly, comprising a linkage cylinder parallel to the insulation column, an electromagnet fixed to the bottom in the linkage cylinder, a metal column located over the electromagnet, a fusing assembly comprising two fusing tubes symmetrically located on the left and right sides of the linkage cylinder, and a gas pushing assembly. Comprising a pushing cylinder located on one side of the linkage cylinder and a pushing rod located in the pushing cylinder. According to the invention, the movement of the metal rod is controlled through the electromagnet, so that the switching work of the other fuse tube can be ensured when the fuse tube is naturally damaged, the normal work of the fuse is ensured, and meanwhile, the reason of the open circuit of the fuse can be quickly judged through the use of the push rod.

The present invention discloses an intelligent fuse control terminal with a one-key sequential control function, comprising an insulator, wherein the lower end of the insulator is rotatably connected to a rocker arm, a fuse tube and an electric push rod are respectively connected to the upper right side of the rocker arm, an upper moving contact is installed at the upper end of the fuse tube, an upper static contact is arranged above the fuse tube, an incoming line contact is arranged at the adjacent position of the upper static contact, and an outgoing line contact is arranged at the lower end of the insulator; a mounting bracket is installed at the middle part of the insulator, a motor cover is installed on the upper side of the mounting bracket, a servo motor is installed inside the motor cover, and a rotating rod is connected to the output end of the servo motor. The intelligent fuse control terminal with a one-key sequential control function realizes the one-key sequential control in the controller program, and can execute the opening and closing commands in an automatic sequence according to the opening sequence parameters, thereby avoiding the risk of human operation errors and safety accidents.

The invention provides an excitation fuse and an electronic circuit, and the fuse comprises a housing which is provided with a first cavity, a second cavity and at least one arc extinguishing cavity, a first conductive part which serves as a current input end and is disposed in the first cavity, and a second conductive part which serves as a current output end and is disposed in the second cavity. The metal melt is provided with at least one fusing part; two ends of the metal melt respectively penetrate into the first cavity and the second cavity to be connected with the first conductive part and the second conductive part; each arc extinguishing cavity comprises an arc extinguishing cavity and at least one exhaust groove which penetrates through the cavity wall of the arc extinguishing cavity and is communicated with the first cavity or the second cavity; the at least one fusing part is arranged in the at least one arc extinguishing cavity, and the two ends of the metal melt penetrate out of the at least one exhaust groove; the arc extinguishing cavity is filled with an arc extinguishing medium wrapping the fusing part; and when the current is greater than or equal to a preset value, the impact piece is driven by an external excitation signal to impact the metal melt, so that the fusing part of the metal melt is broken.

The invention discloses a full-range drop-out fuse which comprises a base, the upper end and the lower end of the base are fixedly connected with an upper contact seat and a lower contact seat respectively, and a fuse carrier is installed between the upper contact seat and the lower contact seat. The fuse carrier is of a split type and comprises a current limiting part and a spraying part which are connected with each other in a detachable mode, and a first fuse wire in the current limiting part and a second fuse wire in the spraying part are connected between the upper contact seat and the lower contact seat in series. The fuse carrier comprises a current limiting part and an injection part which are connected in series, and has the advantages that a current limiting type fuse limits peak current under large fault current and does not inject combustible materials, and an injection type fuse is reliably switched on and off under the condition of small fault current, so that full-range fault current protection is realized; and meanwhile, the system has the advantages of good compatibility, low improvement cost and the like.

The mixed arc extinguishing circuit protection device comprises an excitation source, a piston, a conductor, a melt and an arc extinguishing structure, one ends of the two melts are respectively connected to the conductor at a certain interval, the other ends, which are not connected with the conductor, of the two melts are not connected with each other, are exposed in the gaseous arc extinguishing medium and are insulated, and the piston is arranged corresponding to the conductor part between the two melts; the arc extinguishing structure is located on the outer side of the piston displacement path or the front end of the piston displacement path or the outer side and the front end of the piston displacement path. The excitation source can drive the piston to displace to disconnect a conductor part between the melts to form a fracture, the piston continues to displace to enable the melts located on the two sides of the fracture to be conducted under the action of an electric arc, and the conducted melts are fused under the action of current. The arc extinguishing capability and the breaking capability are improved through combination of arc extinguishing of the melt and arc extinguishing of the arc extinguishing structure.

The utility model relates to an intelligent excitation fuse (100). The intelligent excitation fuse (100) comprises a partially hollow insulating shell; at least one copper bar (106) in which a plurality of fractures (106A) are laid; a plurality of breaking devices (200); the control circuit board (300) is used for triggering the plurality of on-off devices (200) to carry out on-off actions; the signal fuse wire (301) is connected with at least one copper bar (106) in parallel, and the signal fuse wire (301) is electrically connected with the control circuit board (300) through a signal connecting wire (302), so that when current flowing through the signal fuse wire (301) exceeds preset threshold current, the signal fuse wire (301) is fused and is electrically connected with the control circuit board (300); wherein the control circuit board (300) responds to the fusing of the signal fuse (301) and sends an action signal to the plurality of on-off devices (200) which are connected in series.

The utility model relates to the field of electric power facilities, in particular to a stable and reliable drop-out fuse, which comprises an insulator, an upper terminal, a lower terminal, a fuse tube, an upper static contact and a lower static contact. A fuse is arranged in the fuse tube, an upper moving contact is arranged at the upper end of the fuse tube, a lower moving contact is arranged at the lower end of the fuse tube, and the lower moving contact is movably connected to the lower static contact through a trunnion; the lower moving contact is also provided with an elastic wire pressing plate which assists in tensioning the fuse wire. The lower moving contact is provided with a first line pressing terminal, the lower static contact is provided with a second line pressing terminal, and the lower end of the fuse is led out from the fuse tube, penetrates through the first line pressing terminal and then is connected with the second line pressing terminal. And an insulating sheath is arranged at a position where the fuse wire is connected with the elastic wire pressing plate. The sheath is additionally arranged at the contact position of the tail end of the fuse wire and the fuse wire pressing plate to form insulation isolation, so that current does not pass through two sides of the trunnion by the fuse wire, and the heating defect caused by poor contact between the trunnion and the lower static contact is avoided.