23results about "Electrothermal relays" patented technology

The utility model discloses a thermal relay mounting seat structure, which belongs to the technical field of thermal relays and comprises a mounting plate, the surface of the mounting plate is fixedly connected with an adjusting bin, the inside of the adjusting bin is fixedly connected with a bearing so that a first rotating shaft is arranged inside the adjusting bin in a penetrating manner, and the surface of the first rotating shaft is fixedly connected with a transmission worm. The surface of the adjusting bin is fixedly connected with a bearing, so that a threaded pipe is arranged in the adjusting bin in a penetrating manner, the surface of the threaded pipe is fixedly connected with a transmission worm gear, and the transmission worm is meshed with the transmission worm gear. When a worker uses the device to install the thermal relay, the worker only needs to drive a first rotating shaft to rotate through a rotary knob, and under the cooperation of a transmission worm and a transmission worm gear, a limiting screw rod in a threaded pipe can move into a positioning groove, so that the effect of protecting the thermal relay is achieved.

The application relates to a wiring power-off integrated relay and a cable connection and protection method, which comprises a trapezoidal cylinder body, a plurality of piston rods uniformly arranged around the outer periphery of the trapezoidal cylinder body; an easy sublimation substance is arranged in the cylinder body; a long strip arc surface-shaped conductive bridge is fixed to the outer end of the piston rod; the outer end of the conductive bridge is covered with a long strip arc surface-shaped insulating baffle; electric connectors for connecting external wires are arranged on the two end faces of the trapezoidal cylinder body respectively; the piston rod drives the conductive bridge to simultaneously electrically contact or disconnect with the two electric connectors; in the initial state, the insulating baffles are circumferentially enclosed and start to cover the wires with wire insulation skins; the wiring power-off integrated relay and the cable connection and protection method can realize wire connection and relay circuit protection in one, realize integration of the whole with the wires, are small in size, and do not need to be installed in an electric box or a switch cabinet.

The invention relates to a device for tripping an electrical switch, comprising a tripping lever which is movable between a neutral position and a tripping position, wherein the device comprises an actuator with a first shaping and a second shaping and a control element that is moved by the actuator due to its shaping, which control element directly or indirectly moves the tripping lever, wherein the actuator having the first shaping moves the tripping lever into the tripping position and the actuator having the second shaping moves the tripping lever into the neutral position, and wherein the actuator is a shape memory alloy actuator.

To provide a thermal overload relay that can be automatically assembled by simplifying assembly.SOLUTION: A push shifter 14 and a pull shifter 15 are provided, which are displaced by engaging with a plurality of bimetals 13U, 13V, 13W from one side and the other side in a displacement direction. The push shifter has an elongated hole formed in the displacement direction, and the pull shifter also has an elongated hole formed in the displacement direction. Projections 45a1, 45b1, 45a2, 45b2 protruding from an end face of a partition wall of a case 12 are formed with shifter fall-off prevention portions 48b, 49b that prevent the push shifter and the pull shifter from falling off when the shifter fall-off prevention portions are fitted into the elongated holes of the push shifter and the pull shifter and moved in the displacement direction.SELECTED DRAWING: Figure 7

A battery system includes a first electrical interface and safety switch connected to the first electrical interface and including a shape memory alloy element configured to deform from an unactuated configuration to an actuated configuration in response to reaching an activation temperature. A second electrical interface is connected to the safety switch, and the connection between the first electrical interface, the safety switch, and the second electrical interface enables electrical current to flow through a LIB cell. When the shape memory alloy element is the unactuated configuration, the safety switch directly engages the first electrical interface and the second electrical interface and enables electrical current to flow through the LIB cell. When in the actuated configuration, the safety switch disconnects from at least one of the first electrical interface and the second electrical interface and disables electrical current from flowing through the LIB cell.

Provided are a protecting device and a battery pack capable of preventing floating of a blowout member, preventing deformation of a meltable conductor, and maintaining predetermined current capacity and blowout properties. The protecting device 1 includes: a meltable conductor 2; and a blowout member 4 connected to one surface of the meltable conductor 2, wherein the blowout member 4 includes: an insulating substrate 3; and a deformation suppressing electrode 5 formed on a front surface 3a connected to the meltable conductor 2 of the insulating substrate 3 and connected to the meltable conductor 2 to suppress deformation of the meltable conductor 2.

The present embodiments relate to a shape memory alloy (SMA) sensor being part of a switch. For instance, an SMA sensor can include an actuator configured to engage with a locking mechanism that modifies the resistance of the SMA sensor when the locking mechanism is in the locked position. The resistance of the SMA sensor can be unmodified by an external magnetic field, increasing reliability of the SMA sensor resistance determining a state of the locking mechanism. Another example, SMA sensor is an SMA wire being in contact with a locking mechanism in the locked position, thereby increasing a resistance of the SMA wire in the locked position.

The present embodiments relate to a shape memory alloy (SMA) sensor being part of a switch. For instance, an SMA sensor can include an actuator configured to engage with a locking mechanism that modifies the resistance of the SMA sensor when the locking mechanism is in the locked position. The resistance of the SMA sensor can be unmodified by an external magnetic field, increasing reliability of the SMA sensor resistance determining a state of the locking mechanism. Another example, SMA sensor is an SMA wire being in contact with a locking mechanism in the locked position, thereby increasing a resistance of the SMA wire in the locked position.

The utility model belongs to the technical field of relays, and provides a mechanical drive bistable relay, which comprises a cylinder body, a mechanical drive mechanism, an opening and closing mechanism and a piston, and is characterized in that the mechanical drive mechanism, the opening and closing mechanism and the piston are arranged on the cylinder body; the mechanical driving mechanism drives the piston, the piston is driven by the mechanical driving mechanism to reciprocate in the cylinder body, the opening and closing mechanism is controlled to be communicated, and a circuit is controlled to be switched on and off. The novel bistable relay has the advantages of being small in size, high in electrical bearing capacity, high in electrical isolation capacity, good in communication effect and wide in use temperature range, and the novel bistable relay can be manufactured only through precise casting.

To provide a protection element which incorporates a heating element therein, deals with high voltage and heavy current, and blocks a current path more safely and quickly without causing damage in the element.SOLUTION: A protection element includes: a fuse element 2: and a fusing member 3. The fusing member 3 has: an insulation substrate 4; a heating element 5; an insulation layer 6 which covers the heating element; a heating element extraction electrode 7 which is overlapped with the heating element 5 through the insulation layer 6; a heat radiation part 8 which is formed at an area, which is located at the surface 4a side of the insulation substrate 4 and overlaps with at least the heating element 5, and electrically independent from the heating element extraction electrode 7; a holding electrode 10 which is formed on a rear surface 4b of the insulation substrate 4 and holds a fused conductor 2a of the fuse element 2; and a through hole 11 which allows the heating element extraction electrode 7 and the holding element 10 to be continuous with each other. The fuse element 2 is connected to the holding electrode 10.SELECTED DRAWING: Figure 2

A small independent thermal overload relay comprises a shell, a wiring system, a bimetallic strip, a guide plate structure and an actuating mechanism, the wiring system comprises a plurality of wiring units, and each wiring unit comprises a first wiring terminal, a first contact plate, a second contact plate and a second wiring terminal. The first wiring terminal and the second wiring terminal are arranged on the two sides of the bimetallic strip in the length direction of the shell, and the bimetallic strip is electrically connected between the first contact plate and the second contact plate. According to the small-sized independent thermal overload relay, the wiring system, the guide plate structure and the action mechanism are arranged along the height direction of the shell, the plurality of wiring units are arranged along the width direction of the shell, and the contact plate, the wiring terminal and the bimetallic strip are arranged along the length direction of the shell, so that the overall structure of the thermal overload relay is compact and ordered; and the wiring terminal of the wiring unit is connected with the contactor for use through wiring, so that the thermal overload relay can be independently installed and is suitable for contactors of different models.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a relay rear cover, which comprises a cover body and a shielding piece, and is characterized in that the cover body covers the rear end of a thermal overload relay in a sealing manner, and an avoiding hole allowing a lead to penetrate out is formed in the cover body; the shielding piece comprises a shielding part and a first auxiliary part, the first end of the shielding part is connected with the cover body and arranged above the receding hole, the second end of the shielding part extends in the direction away from the cover body, the first side of the shielding part is connected with the first auxiliary part, and the first auxiliary part extends towards the side away from the shielding part and is matched with the shielding part to form a shielding space. The projection of the second side of the shielding part on the projection surface is tangent to the avoiding hole, and when the thermal overload relay is matched with the contactor, the second side of the shielding part is used for abutting against the side wall of a corresponding isolation rib on the contactor. The rear cover of the relay can completely shield a lead exposed between the thermal overload relay and the contactor and avoid interference with an isolation rib.

The present embodiments relate to a shape memory alloy (SMA) sensor being part of a switch. For instance, an SMA sensor can include an actuator configured to engage with a locking mechanism that modifies the resistance of the SMA sensor when the locking mechanism is in the locked position. The resistance of the SMA sensor can be unmodified by an external magnetic field, increasing reliability of the SMA sensor resistance determining a state of the locking mechanism. Another example, SMA sensor is an SMA wire being in contact with a locking mechanism in the locked position, thereby increasing a resistance of the SMA wire in the locked position.

A thermodynamic relay gadget includes a relay oscillator and an on-chip controller. The relay oscillator has a time dependent mass or time dependent frequency that is controllable, by the on-chip controller. The relay gadget is configured to relay thermodynamic information in analog form between an output oscillator of a first energy-based model and an input oscillator of a second energy-based model.

The utility model discloses a thermal relay and a combined structure of the thermal relay and a contactor. A rear cover plate; the penetrating pipes are fixed and arranged on the outer wall face of the rear cover plate in a protruding mode, the rod type terminals are arranged in the penetrating pipes in a penetrating mode, one ends of the rod type terminals are connected with the thermal tripping mechanism, and the other ends of the rod type terminals are located outside the penetrating pipes; the lower buckles are fixedly arranged on the outer wall face of the rear cover plate at intervals, the lower buckles and the penetrating pipes are located at the two ends of the rear cover plate in the length direction respectively, and buckling parts buckled with the ends of the lower buckles are arranged on a shell of the contactor; when the rod type terminal is connected with a wiring terminal of the contactor and the lower buckle is buckled with the buckling part, the penetrating pipe is in contact with the contactor shell, and the penetrating pipe and the lower buckle support the rear cover plate at the same time, so that a connection gap is kept between the rear cover plate and the contactor shell, and the connection gap is used for heat dissipation of the thermal relay. The strength of the connection structure between the combined thermal relay and the contactor is improved, heat dissipation of the thermal relay is facilitated, and action response and reset time of the thermal relay are ensured to accord with set parameters.

A power relay circuit (100) for switching a load current includes a micro-electro-mechanical system switch, hereinafter MEMS switch (110), and a semiconductor power switch (120). The MEMS switch (110) and the semiconductor power switch (120) are connected in series with the load current.

This utility model belongs to the field of low-voltage electrical technology and discloses an electromagnetic starter, including a housing assembly, a stop operation button, a thermal relay, and a button assembly. The housing assembly has an installation space; the stop operation button is located on the housing assembly and is used to accept operation to stop the electromagnetic starter; the thermal relay is located in the installation space and has a stop button for stopping the thermal relay and a reset button for resetting the thermal relay; the button assembly is movably located on the housing assembly, with its first end for accepting a pressing operation, and its second end extending into the installation space and having a pushing part that can push against the stop button and the reset button. This electromagnetic starter can reduce the frequency of use of the button assembly for resetting and stopping the thermal relay, optimize the force condition of the button assembly when pressed, and improve the service life of the button assembly and the thermal relay.

The utility model relates to electrical protection equipment technical field especially inner built motor overheat automatic power-off protection device. Its technical scheme includes thermal relay, is equipped with a plurality of lugs on the thermal relay, the inside of lug all is equipped with corresponding first input terminal, still includes the second input terminal of rotation connection in first input terminal end part. The utility model discloses the cooperation of first input terminal, second input terminal, connecting sleeve, connecting plate, card seat, locking sleeve block etc. structure, when using inner built motor overheat automatic power-off protection device, through second input terminal can rotate and realize accomodation, to ensure that second input terminal reduces external force collision, avoids terminal bending damage. Meanwhile second input terminal rotates for use state from rotation accomodation state in first input terminal end part, and second locking mechanism realizes the locking of second input terminal use state, to guarantee the stable conduction, and two kinds of state switching process is quick and easy to operate.

A thermal overload relay comprises a housing, and a main circuit, a heat protection system, an operating mechanism and a control circuit respectively arranged inside the housing, wherein a first direct connecting wire is arranged inside the housing, the wire-inlet end of the main circuit is provided with a wire-inlet end lead portion extending to the outside of the housing, the first direct connecting wire includes a first contact portion connected to the control circuit and a first lead portion extending out of the housing, one end of the first direct connecting wire is connected to the control circuit, the first lead portion is arranged on the same side of the housing with the wire-inlet end lead portion of the main circuit to connect a coil of a contactor, on overload the heat protection system triggers the operating mechanism to act, so as to drive the control circuit to disconnect the power supply of the first direct connecting wire. The first direct connecting wire connected to the control circuit is arranged inside the housing, so that the control circuit is directly connected to the coil of the contactor through the first direct connecting wire, such structure can decrease wiring steps without necessity to additionally wire the control circuit, and has the characteristics of convenient wiring.

Shape memory alloy (SMA) systems suffer from system complexity, resulting in bulky systems that require a large footprint and significant height clearance. Furthermore, current systems have not been able to achieve a high Z-stroke range with a compact, low-profile footprint. [Solution] SMA actuators and related methods are described. One embodiment of the actuator includes a base, a plurality of bending arms, and at least a first shape memory alloy wire connected to a pair of the plurality of bending arms. Another embodiment of the actuator includes a base and at least one bimorph actuator comprising a shape memory alloy material. The bimorph actuator is mounted on the base.

The utility model belongs to relay equipment technical field especially relates to a liquid temperature relay for track locomotive, including temperature drive room, temperature drive room top end connecting cavity, cavity top end fixed support platform, support platform center hole, support platform one end top vertical fixed sensor, sensor is concave, the recess is along vertical center line symmetry, temperature drive room built -in sleeve, sleeve is equipped with expansion medium in, and sleeve is connected piston in, piston one end is connected with sleeve inner wall sliding, the other end passes through sleeve top end and connects the jackscrew, and the jackscrew top end passes through support platform center and connects drive link, the other end of drive link is connected adjusting rod, and the one end of drive link and jackscrew connection is spiral spring shape, and adjusting rod is placed in sensor recess middle. The relay simple structure, miniaturization, light weight, safe operation, adjusting rod and sensor between no contact connection, avoid because action number increases and cause mechanical fatigue, contact wear and contact oxidation problem.