34results about How to "Reduce switch size" patented technology

The invention discloses a phase-change switch which comprises three permanent magnetic contact mechanisms, three clamp plates, a clamp plate hand lock mechanism and a clamp plate mutual exclusion mechanism. A user-side single-phase live wire connector and uplink-side three-phase live wire connectors are connected with three groups of static contact pairs, and three groups of static contact pairs respectively correspond to the three permanent magnetic contact mechanisms. The permanent magnetic contact mechanisms comprise permanent magnetic mechanisms, movable contacts and guide columns. The movable contacts are mounted at the bottoms of the guide columns. The tops of the guide columns are connected with magnetic cores of the permanent magnetic mechanisms. The movable contacts can be driven to move upwardly when the permanent magnetic mechanisms upwardly suck the movable contacts, so that two ends of each movable contact can be connected with the corresponding static contact pairs. The roots of the three clamp plates are respectively mounted on clamp plate shafts, and the tail ends of the three clamp plates are respectively movably connected with the guide columns of the three permanent magnetic contact mechanisms. When one of the clamp plates upwardly swings, the other two clamp plates can be clamped by the clamp plate mutual exclusion mechanism and cannot upwardly swing. Operators can forcibly separate the three movable contacts from three static contacts via the clamp plates by the aid of the clamp plate hand lock mechanism.

The present invention provides a combined travel switch. The combined travel switch comprises: a housing, wherein the housing has a first touch space and a second touch space; a button partially arranged in the housing; a first contact bridge, wherein the first contact bridge is connected with the button and is arranged in the first touch space; a second contact bridge, wherein the second contactbridge is connected with the button and is arranged in the second touch space; a first contact member partially arranged in the first touch space; and a second contact member partially arranged in thesecond touch space. According to the combined travel switch provided by an embodiment of the present invention, by dividing two spaces in the switch, and by respectively placing the first contact bridge and the first contact member, the second contact bridge and the second contact member in the two spaces, switch setting inside the two spaces is realized, and the staff can only press the button to simultaneously realize the opening and closing control of the two circuits.

The invention discloses a bidirectionally identifiable microfluid inertial electric switch, which comprises a base, a cover plate, metal droplets, metal electrodes and microchannels. The cover plate is located at the upper end of the base, and the two are sealed; the microchannel is arranged on the base; the metal electrode is arranged on the cover plate; Valves, straight channels and bends; the metal droplet is located in a rectangular reservoir. One end contact of the metal electrode is located in the microchannel, and the other end contact is located outside the overlapping area of ​​the base and the cover plate. When the inertial force on the switch is greater than its threshold, the metal droplet will break through the capillary valve. After the recoil load and service load disappear, the metal droplet can completely return to the rectangular liquid storage pool. Under the action, the metal droplet conducts the switch and is irreversible. The invention can bidirectionally identify the acceleration load, stably connect electricity, and has the performance of working in a low temperature environment.

The invention relates to a switch device and a feedback resistance circuit. The device comprises: the first transmission terminal of the first transistor is used to connect the input terminal of the operational amplifier; the second transmission terminal of the first transistor is used to connect the output terminal of the operational amplifier through a feedback resistor; the control terminal of the first transistor is used to connect The first gating control circuit is used to respond to the first gating control signal output by the first gating control circuit to enter the gating state or the off state; the output terminal of the substrate voltage selection module is connected to the first transistor of the first transistor Three transmission terminals, one input terminal of the substrate voltage selection module is used to connect the input terminal of the operational amplifier, the control terminal of the substrate voltage selection module is used to connect the first gating control circuit; the substrate voltage selection module is used to connect the first gating control circuit; With the transistor in the gated state, the substrate of the first transistor transmits the input voltage of the operational amplifier. The device can improve the bandwidth of the programmable gain amplifier.

The invention discloses an intelligent circuit breaker with the phase selection function, which comprises a shell and a phase selection device in the shell, wherein the phase selection device comprises bistable permanent magnet mechanisms and a yoke plate mechanism, the bistable permanent magnet mechanisms are three groups of electromagnetic mechanisms, and each transmission rod is simultaneouslyengaged to or disengaged from the yoke plate mechanism to realize the simultaneous advancing and retreating opening / closing or single-phase advancing and retreating opening / closing of a three-phase circuit. By adopting the novel bistable permanent magnet mechanisms and the yoke plate mechanism, the intelligent circuit breaker not only has synchronous on and off capability but also has split-phaseselection on and off capability, and can be used as a reclosing device by equipping a reclosing controller; and the intelligent circuit breaker can also be used as an opening switch by equipping an intelligent controller. Meanwhile, the mechanisms are loaded into an SF6 air tank shell to avoid pollution and rusting by the external environment; and the switch shell is subjected to frosting and solid insulation heat isolating treatment so as to increase the insulating property and reduce the size of the switch, and the internal and external connection part of the switch is subjected to double-layer sealing treatment, thus the service life of the switch can be prolonged to more than 30,000 times, and the switch is applicable to frequent operation.

The invention discloses a load disconnecting switch. The load disconnecting switch comprises an insulating frame and an operating mechanism fixed on the frame, a contact system and an arc extinguish chamber, and magnetic blow-out coils are arranged at the two ends of the arc extinguish chamber. The contact system comprises a static contact base, a static arc contact and a static main contact, the static arc contact and the static main contact are fixed on the static contact base, a shaft is arranged at the bottom of the static contact base, a dynamic contact is installed on the shaft, a dynamic arc contact, a dynamic main contact and a spring are fixed on the dynamic contact, the static arc contact is arranged between the magnetic blow-out coils and the dynamic arc contact, the static arc contact is connected with a static arc strike angle, the magnetic blow-out coils are connected with the static arc strike angle and the static contact base, the dynamic contact is connected with a flexible coupling through the dynamic contact base, and the operating mechanism is connected with the dynamic contact through a pushing rod. The load disconnecting switch has the advantages that a fault large current is conducted, a rated load current is disconnected, the load disconnecting switch can bear a large current within a short time, the structure is compact, working is safe and reliable, and the load disconnecting switch is suitable for an urban railway system direct current traction power supply system and serves as a longitudinal load operating power-driven disconnecting switch.

The invention discloses a pressing type travel switch resisting severe environment. The pressing type travel switch is composed of a shell, a drive body assembly, a base assembly and a pressing spring. The base assembly comprises a base body and at least one set of contact bars. The drive body assembly comprises a drive body, a button and at least one drum-like contact spring part. The number of the drum-like contact spring parts is the same as that of the sets of the contact bars. A locating boss on the base body and a locating blind hole in the drive body are located on the same axis. The upper end of the pressing spring is fixedly embedded into the locating blind hole. The lower end of the pressing spring is fixedly embedded outside the locating boss. The shell is a housing with a penetration hole formed in the center of the top. According to the travel switch, the drum-like bundling type contact springs with multiple elastic contacts are adopted, multi-point elastic surrounding uniform contact with the contact bars can be achieved, and the travel switch has the advantages of being high in impact resistance, high in vibration resistance, miniaturized, high in reliability, low in cost and the like.

The invention relates to a seven-gear off-circuit tap-changer achieving direct-reverse voltage regulating. The seven-gear off-circuit tap-changer comprises an insulator, an upper support and a lower support, and an insulating shaft is arranged between the upper support and the lower support; each phase corresponding to the tap-changer is provided with two layers of fixed contacts and moving contacts, one of the two fixed contact layers in each phase is a main coil tap layer and is provided with four fixed contacts connected with a main coil tap k and seven fixed contacts connected with a voltage regulating coil tap, the other layer is a voltage regulating outputting layer and is provided with four x outputting fixed contacts and seven fixed contacts connected with the voltage regulating coil tap, and the insulating shaft is provided with moving contacts each of which is simultaneously connected with two adjacent fixed contacts. The seven-gear off-circuit tap-changer is simple in structure, easy and convenient to manufacture, reliable in working performance, low in manufacturing and using cost, suitable for being configured with transformers with various structures and capable of facilitating simplification of the transformer structures, has more direct-reverse voltage regulating gears and a good direct-reverse voltage regulating effect and can meet the requirements of the transformers needing more gears to conduct direct-reverse voltage regulating.