1221results about "Contact engagements" patented technology

Fault breaking contactors are disclosed. In an embodiment, an electromechanical switching device includes one or more terminals; a moveable contact; and an actuator assembly for moving the moveable contact between a closed position in which the moveable contact contacts the one or more terminals and an open position in which an air gap is maintained between the moveable contact and the one or more terminals; and a dynamic air gap mechanism configured to increase the air gap beyond that of the closed position in response to a fault current.

The present disclosure relates to a module (100) for generating signals, in particular signals for opening vehicle doors or flaps. The module (100) includes: a one-piece housing (102) having a plug region (106) and a switch region (104); at least one switch, in particular a microswitch (108), which is connected releasably to the switch region (104) of the housing; and electrical contacts (110, 112), which are releasably connectable to the at least one switch and extend from the switch region (104) at least partially into the plug region (106). The electrical contacts are configured in order to produce an electrical contact with an on-board plug for transmitting an electrical signal, wherein the housing (102) is preferably releasably connectable to a vehicle component, preferably an operator element housing, and particularly preferably a door lever housing.

The invention discloses a vertical open type isolating switch, which comprises a static contact seat, a static contact, a static contact, a static contact and a static contact, and is characterized in that the static contact seat is provided with an open slot; a tool arm base; the tool arm driving shaft is movably mounted on the tool arm base; the tool arm moving seat is hinged to the tool arm base; the conductive tool arm is mounted on the tool arm moving seat and can rotate along with the tool arm moving seat until the conductive tool arm is clamped into the open slot, a radial bulge structure is arranged on the peripheral wall of the conductive tool arm, and the conductive tool arm can rotate along the axis of the conductive tool arm relative to the tool arm moving seat; and the transmission mechanism is used for connecting the tool arm driving shaft with the conductive tool arm in a transmission manner, and can enable the radial bulge structure on the conductive tool arm to tension the open slot after the conductive tool arm is clamped into the open slot. When the conductive cutter arm starts to enter the open slot, the radial bulge structure does not tension the two opposite side walls of the open slot, so that the resistance is not large when the conductive cutter arm enters and exits the open slot, and after the conductive cutter arm is clamped into the open slot, the radial bulge structure continues to rotate and is gradually opened to tension the two opposite side walls of the open slot, so that the conductive cutter arm is in tight contact, and sufficient contact force is ensured.

The radial opening mechanism comprises a disc-shaped base plate, a plurality of radial sliding grooves are evenly distributed in the surface of one side of the disc-shaped base plate in the annular direction, radial supporting rods are arranged in the radial sliding grooves in a sliding mode, and supporting blocks are arranged at the front ends of the radial supporting rods; a pull rod penetrates through the center of the disc-shaped base plate, and the front end of the pull rod is connected with the radial supporting rods through parallelogram hinge structures. When the pull rod moves backwards, the radial supporting rods can synchronously expand outwards in the radial direction, and the annular elastic piece is opened by the multiple supporting blocks. The pull rod is sleeved with a reset spring used for resetting the pull rod. The radial supporting rods expand outwards in the radial direction under the action of the pull rods and the parallelogram hinge structures, the opening effect of the annular elastic pieces is achieved, and the device is simple in structure, light in weight and convenient to move.

The invention discloses a relay which comprises a pair of static contact leading-out ends, a movable spring assembly, a push rod assembly and an anti-rotation mechanism. The movable spring assembly comprises a movable spring sheet, and the two ends of the movable spring sheet in the first direction are used for making contact with or being separated from the pair of static contact leading-out ends respectively. The first direction is the arrangement direction of the pair of static contact leading-out ends. And the push rod assembly is used for pushing the movable spring assembly to move, so that the movable spring is in contact with or separated from the static contact leading-out end. The anti-rotation mechanism is connected to the movable spring assembly and / or the push rod assembly and used for limiting the movable spring assembly to rotate around the axis of the push rod assembly relative to the push rod assembly.

According to the technical scheme, the contact assembly comprises an installation plate, a contact knife support, a static contact support and a contact knife, each static contact is provided with a cushion block with an inclined plane, each cushion block is provided with a buffer spring, each static contact support is provided with symmetrical static contacts, each static contact comprises a contact terminal, a support and a connecting rod, and each contact terminal is provided with an inclined plane. The contact terminal is fixedly connected to the static contact support, the support is fixedly connected to the static contact support, the support is movably connected with the connecting rod, the connecting rod is provided with a connecting rod protrusion extending and contacting with an inclined plane, the contact knife is provided with a cavity, the cavity is provided with a fastening device, and the static contact support is provided with a matched fastening base. Through the arrangement of the cushion block and the buffer spring, the impact on the contact knife is reduced, and the service life of the contact knife is prolonged. By arranging the linkable static contact, the static contact can clamp the contact knife to obtain reliable connection and is not easy to loosen.

The invention discloses a high-voltage direct-current relay which comprises a pair of static contact leading-out ends, a push rod assembly, a plurality of movable spring assemblies, a magnetic conductive assembly and an elastic assembly. Each movable spring assembly comprises a movable contact spring, the movable contact springs are arranged side by side, and the two ends of each movable contact spring in the first direction are used for making contact with or being separated from the corresponding pair of static contact leading-out ends respectively; wherein the first direction is the arrangement direction of the pair of static contact leading-out ends; the magnetic conductive assembly is arranged on one side, facing the static contact leading-out end, of the plurality of movable reeds and is used for resisting electric repulsive force between the contacts; the elastic assembly is connected to the plurality of movable spring assemblies and the push rod assembly, and the elastic assembly is used for providing contact pressure.

The invention discloses a relay which comprises a push rod assembly, a movable spring assembly and an elastic assembly. The movable spring assembly comprises a movable spring sheet, the elastic assembly is connected to the movable spring assembly and the push rod assembly, and the elastic assembly is used for providing contact pressure for the movable spring sheet; in the over-travel process, the push rod assembly extrudes the elastic assembly, and the push rod assembly has an over-travel initial position, an over-travel end position and a transition position between the over-travel initial position and the over-travel end position relative to the position of the movable contact spring. In the process that the push rod assembly moves from the over-travel initial position to the transition position, the elastic assembly has a first stiffness coefficient; in the process that the push rod assembly moves from the transition position to the over-travel ending position, the elastic assembly has a second stiffness coefficient, and the first stiffness coefficient is smaller than the second stiffness coefficient.

The present invention discloses a three-position switch. An innovative fast direct-acting three-position switch is used, so that a moving grounding contact is separated from a moving isolating contact, and contact ablation after closing of a grounding short-circuit current does not affect flow of a main circuit, thereby improving closing capacity. During opening, the moving isolating contact and the moving grounding contact are respectively shielded by a shielding cover, and arc ablation of the contact does not affect insulating performance of a clearance. A three-phase moving isolating contact and a three-phase moving grounding contact are simultaneously driven by a transmission shaft, thereby ensuring synchronization of three phases. A linear motion of the moving grounding contact and the moving isolating contact is implemented through rotation of a three-position insulating spindle, and switching of actions such as closing, opening, and grounding of the three-position switch is implemented. The present invention further discloses a gas box using the switch.

A solid-state circuit breaker comprises a sensing and control circuit configured to realize designed functions, a power electronics section that includes solid-state switching components for normal operations and a vacuum gap section that includes a sealed vacuum tube. The vacuum gap section is disposed in series with the power electronics section. The vacuum gap section is configured to open to interrupt a current such that the associated arcs are contained in the sealed vacuum tube.

Provided are a contact system, a contact unit and a circuit breaker. The contact system includes a moving contact assembly arranged in a shell and a pair of static contact assemblies. The moving contact assembly includes an arc isolation portion which is assembled rotatably. The arc isolation portion is provided with a contact groove inside. A pair of moving contact portions are arranged in the contact groove. Each static contact assembly includes a static contact portion which extends into the contact groove. The arc isolation portion rotates and drives the pair of moving contact portions to be in contact with or separated from the static moving portion in the contact groove. An edge of the arc isolation portion is also provided with a pair of mounting grooves which are communicated with the contact groove, and each mounting groove is at least reserved with a notch for the static contact portion to be placed at one end surface of the arc isolation portion. According to the present invention, when the contact system is assembled, the static contact portion of the static contact assembly is arranged correspondingly from the notch and can be placed in the contact groove at an appropriate angle without lifting the static contact portion, which simplifies the step of assembling the contact system, is convenient in operation, can achieve automatic assembly and is conducive to reducing the cost.

The present invention discloses a vacuum parallel switch device, including: a main electrically-conductive loop, including an incoming line terminal bus, a bus connected to the incoming line terminal bus, a fixed isolating contact connected to an end of the bus, and a moving isolating contact assembly mating with the fixed isolating contact; and a vacuum parallel loop, including the incoming line terminal bus, the bus connected to the incoming line terminal bus, and a parallel vacuum arc-extinguishing chamber connected to an other end of the bus, where a rotating conductor assembly is connected to a moving end of the parallel vacuum arc-extinguishing chamber through a flexible connection, the rotating conductor assembly is connected to a lead-out conductor of the moving isolating contact assembly, and the moving end of the parallel vacuum arc-extinguishing chamber is driven through an insulating rotating member to implement opening or closing.

The embodiment of the invention relates to a three-position switch and a corresponding switch cabinet. The three-position switch generally comprises an isolating contact, a grounding contact and a moving contact. The moving contact includes a first end and a second end. The first end is connected with the base, the second end is opposite to the first end along the longitudinal extension direction of the moving contact, rotates around the first end along with the moving contact, and is switched among a switching-on station in contact with the isolating contact, a grounding station in contact with the grounding contact and a switching-off station out of contact with both the isolating contact and the grounding contact. The second end is provided with a first protrusion and an arc-resistant component. The first protrusion protrudes from the main surface of the moving contact and makes contact with the isolation contact when the second end is located at the switching-on station. An arc resistant member is disposed proximate the first protrusion and configured to withstand an arc when the first protrusion is proximate the ground contact. According to the embodiment of the invention, the moving contact is correspondingly modified, so that the consistency of the contact resistance before and after the experiment can be ensured.

The contact mechanism comprises a moving contact assembly and a static contact group, the moving contact assembly comprises a contact support and a moving contact bridge, the moving contact bridge is driven by the contact support to move in the direction close to or away from the static contact group, the moving contact assembly further comprises two elastic devices, a connecting piece is arranged in the middle of the moving contact bridge, and the elastic devices are connected with the moving contact bridge. The first end and the second end of each elastic device are rotationally connected with the contact support and the connecting piece respectively, so that the two elastic devices are matched to be switched among a first balance position, a dead point position and a second balance position, and during normal opening and closing, the two elastic devices are kept at the first balance position with an included angle and apply pressure to the movable contact bridge; when a short-circuit fault occurs, the movable contact bridge is repelled by an electrodynamic force and drives the second ends of the two elastic devices to move relative to the contact support, and the two elastic devices are switched and kept at a dead point position or a second balance position forming an included angle to limit the movable contact bridge. The elastic device improves the reliability of the contact mechanism.

In an embodiment a switching device includes at least two fixed contacts and one movable contact in a switching chamber and at least two auxiliary contacts, two spring contacts and a contact plate in the switching chamber, wherein each of the spring contacts contacts one of the auxiliary contacts with a first contact region and has a second contact region, wherein the contact plate is movable together with the movable contact, and wherein the contact plate is configured to contact the second contact regions of the spring contacts in a first switching state of the switching device and is configured to be arranged at a distance from the second contact regions of the spring contacts in a second switching state.

Multi-pole or multi-phase electrical wiring devices that incorporate clamp-type wire termination assemblies are described. The electrical wiring devices include multi-pole motor switches. The electrical wiring devices include a plurality of wire termination assemblies. Each wire termination assembly includes a wire terminal and an activating member.

A switch device includes at least one switch module and at least one welding protective plate. The switch module includes an enclosure for receiving a plurality of control terminals and a driving member therein. The control terminals respectively have an end projected from an end or a rear side of the enclosure. The driving member is controllable to change an electrically connected or disconnected state between the control terminals. The welding protective plate is provided on the enclosure at the end from where the control terminals are projected. The projected control terminals further extend through the welding protective plate to be welded to a circuit board. The welding protective plate can withstand a high temperature and is located between the switch module and the circuit board to form a thermal insulation and protection mechanism, protecting the switch module from external deformation and inner damage by the high temperature during welding.

The present invention relates to a snap switch (100) with a housing (1), an actuating plunger (2) having two switching positions and two contact bridges (31, 32) for electrically connecting two pairs of fixed contacts (21, 22; 23, 24), wherein in the first switching position the first pair of fixed contacts (21, 22) and in the second switching position the second pair of fixed contacts (23, 24) is connected, and with snap springs (8, 9) which are supported on an actuating element (3) and the actuating plunger (2) in a substantially symmetrical manner under preload, the lines of action of which are displaceable by the actuating element (3) such that the actuating plunger (2) can be snapped, wherein the snap switch (100) further comprises a positive opening arrangement, wherein the two contact bridges (31, 32) each have at least two contact points (17, 18, 19) at one end and at the other end. 20) for electrically parallel contacting of the first pair of fixed contacts (21, 22) respectively.of the second pair of fixed contacts (23, 24), wherein each of the contact points (17, 18, 19, 20) is designed to fully switch a rated electrical power of the snap switch (100), and the actuating plunger (2) has a first stop (41) in the closing direction of the first pair of fixed contacts (21, 22) and a second stop (42) in the closing direction of the second pair of fixed contacts (23, 24), wherein the stops (41, 42) in conjunction with a first counter-stop (51) and a second counter-stop (52) respectively limit a movement of the actuating plunger (2) in the closing direction of the first pair of fixed contacts (21, 22) and of the second pair of fixed contacts (23, 24).

A contactor including a first electrical contact, a second electrical contact, and a movable bridge displaceable between a closed position and an open position, the contactor further including: a lower arc guide including a first portion connected to the first electrical contact, and a second portion connected to the second electrical contact, an upper arc guide including a first portion facing the first portion of the lower arc guide, a second portion facing the second portion of the lower arc guide, and a fuse connecting the first portion and the second portion of the upper arc guide.

A switching contact assembly for an electrical switching element includes a contact bridge, a base, and a spring assembly. The contact bridge is attached to the base with the spring assembly between the contact bridge and the base. The contact bridge attached to the base is resilient in a direction opposite a switching direction.

The invention discloses power conversion equipment. The power conversion equipment comprises a switching device, a power conversion circuit and a controller, the switch device comprises multiple layers of switches which are stacked in the extending direction of the rotating shaft, the multiple layers of switches comprise first layer switches and second layer switches, and the number of the first layer switches is smaller than that of the second layer switches; the through-current capability of the first-layer switch is greater than that of the second-layer switch; the first-layer switch is used for being connected with the first poles of the N photovoltaic strings at the same time, and each second-layer switch is used for being connected with the second poles of part of the N photovoltaic strings; when faults exist in the N photovoltaic group strings, the multiple layers of switches are all switched off in a linkage mode, and at most two or three photovoltaic group strings in the N photovoltaic group strings are connected in parallel. Therefore, different numbers of connected photovoltaic strings are adapted, the number of switch layers is saved, and safety is ensured.

The utility model provides an opening and closing guide mechanism of an isolating switch. The opening and closing guide mechanism comprises a movable contact plate and a static contact plate, the movable contact plate is provided with a contact plate for locking the contact knife switch and the movable contact plate, the contact plate is fixed on the movable contact plate and is positioned on one side, back to the accommodating cavity, of the positioning rib, the contact knife switch is provided with a clamping groove for the contact plate to be clamped in, and two sides of the contact knife switch are provided with inclined plane guide ribs for guiding the contact plate to be clamped in the clamping groove. The contact plate is provided with a guide inclined plane attached to the inclined plane guide rib, and the guide mechanism can overcome the defect that in the prior art, due to the fact that the shapes of the first disconnecting link and the second disconnecting link are designed to be plane straight lines with the consistent upper and lower thicknesses, in the opening and closing process, the disconnecting links are prone to being dislocated, and consequently the disconnecting links are blocked.

A power shut-off module includes an insulating housing, two pairs of fixed contacts and two movable contacts rigidly attached to an item of movable equipment that is movable in translation in the housing between an open position and a closed position. The module includes an insulating shield device having a fixed end rigidly attached to the housing and a movable end rigidly attached to the item of movable equipment, and which has a length that is variable between an extended position when the item of movable equipment is in the open position and a retracted position when the item of movable equipment is in the closed position, in order to create a dielectric barrier between the fixed contacts of one and the same pair of fixed contacts.

A static contact unit (20) for a tap changer comprises a contact body (4), a pair of contact elements (5) and a spring element (6). The contact body (4) is configured to be arranged statically with respect to a movable contact (3) that is arranged at a moving shaft (1) of the tap changer. The two contact elements (5) are coupled to the contact body (4) configured to establish an electrical contact to the movable contact (3) of the moving shaft (1). The spring element (6) is coupled to both contact elements (5) inbetween with respect to a longitudinal axis (L1) of the moving shaft (1) configured to bias the contact elements (5) so that, with respect to a state in which the tap changer is assembled, the contact elements (5) are biased simultaneously in direction towards each other in sections at least.

The power contactor (100) comprises: - a fixed contact (102A); - a moving contact (104A); and - an electrically insulating screen (112) designed to move between a fully extended position and an interposed position between the fixed contact (102A) and the moving contact (104A) in its fully extended position. It further comprises: - a return device (116) designed to push the screen (112) from its fully extended position to its interposed position; and - a fuse (118) acting as a mechanical stop preventing the screen (112) from leaving its fully extended position, the fuse (118) being designed to trip to allow the screen (112) to move from its fully extended position to its interposed position under the effect of the return device (116), due to heat generated by an electric arc occurring between the fixed contact (102A) and the moving contact (104A). Figure for the abridged version: Fig. 1

The present invention relates to a snap-action switch (100) comprising a housing (1), an actuation plunger (2) with two switching positions and with at least one contact bridge (31, 32) for electrically connecting at least one first pair of fixed contacts (23, 24) in a switching position and with snap-action springs (8, 9), which are preloaded and are supported substantially symmetrically on an actuation element (3) and the actuation plunger (2) and which have lines of action that can be shifted by the actuation element (3) in such a way that the actuation plunger (2) can be snapped from a first switching position, in which the actuation plunger (2) is substantially in a resting position, into a second switching position, in which the actuation plunger (2) is substantially in the actuation position, wherein the snap-action switch (100) also has a forced-opening assembly with which a switching at least from the first into the second switching position is imposed on the actuation element (3) when a forced-opening force is exceeded, wherein the at least one contact bridge (31, 32) has two respective contact points (17, 18, 19, 20) at one end and the other end for the electrically parallel contacting of the first pair of fixed contacts (23, 24), wherein each of the contact points (17, 18, 19, 20) is designed in such a way as to entirely switch an electrical rated power of the snap-action switch (100), and the actuation plunger (2), at least in the first direction of closing of the first pair of fixed contacts (23, 24), has at least one first stop (41) (where in Figure 3), which interacts with a first counter-stop (51) to limit a movement of the actuation plunger (2) in the direction of closing of the first pair of fixed contacts (23, 24).

One embodiment relates to a contactor assembly adapted to switch a power supply to a circuit having a power supply. The contactor assembly includes a housing defining an interior compartment. A current-carrying contact and an arc contact are located in an interior compartment of the housing. At least one arc contact has an overcurrent protection device located outside the interior compartment of the housing. When the actuator assembly is moved towards the closed position, the actuator assembly is electrically connected with the arc contact before being electrically connected with the current-carrying contact, and when the actuator assembly is moved towards the open position, after the electrical connection with the current-carrying contact is disconnected, before the electrical connection with the arc contact is disconnected, the actuator assembly is electrically connected with the arc contact after the electrical connection with the current-carrying contact is disconnected. The actuator assembly maintains an electrical connection with the arc contact.

The present application provides a contact comprising: a first contact member formed of a tungsten-containing material, the first contact member having an exposed surface and a first groove open to the exposed surface, the first groove having a surrounding sidewall and a bottom wall defining an interior of the first groove; a first metal layer on a bottom wall of the first recess and having a top surface below the exposed surface of the first contact member; a liquid metal layer formed of a material containing a gallium indium tin alloy, located only on the top surface of the first metal layer and extending over the exposed surface of the first contact member, and the liquid metal layer is compliant and displaced by pressure applied to the liquid metal layer, and return to the initial shape in response to removal of the pressure on the liquid metal layer.

The utility model discloses a switch assembly and an electric tool, the switch assembly comprises a first installation member, a second installation member and a reset member which can be arranged in a relative pivoting manner, the first installation member is provided with a first trigger member, the second installation member is provided with a second trigger member, and the reset member comprises a plurality of pressure springs. In a first moving stroke in which the first mounting piece and the second mounting piece rotate relatively and approach each other, the first trigger piece and the second trigger piece approach each other, so that the electric tool is switched to a first working state, meanwhile, each pressure spring is pressed to be shortened and store energy, and in a second moving stroke in which the first trigger piece and the second trigger piece are far away from each other, the electric tool is switched to a second working state. And each pressure spring extends and provides reset force for driving the two to be far away, so that the electric tool is switched to a second working state. According to the utility model, the condition that the pressure spring is inclined and clamped along with the action of the switch assembly can be improved, and meanwhile, the spring force needing to be overcome is also reduced in the assembly process, so that the assembly operation difficulty is reduced.