103results about "Contacts" patented technology

This disclosure discloses an operating mechanism including a housing; a drive shaft parallel to the pivot axis of a moving contact, the drive shaft passing through and protruding from a moving contact assembly, the moving contact assembly being pivotable relative to the housing about the pivot axis of the moving contact; a pull rod configured to move between a first position and a second position; a pivot plate mounted to be pivotable relative to the housing about the pivot axis of the moving contact, the pivot plate having a first hole for connection with the drive shaft; a first pivot member, one end of which is pivotally connected to the housing; and a second pivot member, one end of which is pivotally connected to the other end of the first pivot member and the pull rod, the other end of which is pivotally connected to the pivot plate at a second hole in the pivot plate, so as to drive the pivot plate to pivot about the pivot axis of the moving contact, and thereby drive the moving contact assembly to pivot about the pivot axis of the moving contact. The distance between the second hole and the pivot axis of the moving contact is less than the distance between the pivot axes of the two ends of the first pivot member.

To provide an alloy and a wire, a strip or a probe needle which have a high electrical conductivity and, at the same time, a high degree of hardness, but which are simultaneously simple to produce and have as high an oxidation resistance as possible on the surface.SOLUTION: The invention relates to a palladium-copper-silver alloy with palladium as the main component, wherein the palladium-copper-silver alloy has a weight ratio of palladium to copper of at least 1.05 and at most 1.6 and has a weight ratio of palladium to silver of at least 3 and at most 6, and wherein the palladium-copper-silver alloy contains more than 1 wt % and up to a maximum of 6 wt % of ruthenium, rhodium or ruthenium, and rhodium and contains, as the remainder, palladium, copper and silver and at most 1 wt % of other metallic elements including impurities.SELECTED DRAWING: Figure 2

The disclosed technology relates generally to switching devices and more particularly to switching devices employing micro-electromechanical system (MEMS) switches. The switching devices can serve as circuit breakers for protecting electrical systems against certain electrical events. The switching devices can be configured to monitor and control one or both the MEMS switches and the electrical systems being protected. The disclosed technology additionally relates to systems including the switching devices and methods of using the switching devices.

This invention relates to the field of fuse technology and discloses an intelligent electric drop-out fuse, comprising a support assembly, the support assembly including an insulating support, a fixing member fixedly connected to one side of the top of the insulating support, a moving contact piece fixedly connected to the inner side of the top of the fixing member, a solenoid coil electrically connected to the top of the moving contact piece, a fuse tube assembly mounted at the bottom of the moving contact piece, and a self-cleaning assembly fixedly connected to one side of the top of the fuse tube assembly, the self-cleaning assembly including a mounting plate, a slider mounted on the top of the mounting plate, and a scraper fixedly connected to the top of the slider. When the solenoid coil is energized, it generates a magnetic field, eliminating contact welding. The fuse tube assembly releases air, releasing the locking block and allowing the scraper to contact the contact. The self-cleaning mechanism, combined with the drop-out of the fuse tube assembly, prevents the fuse from failing to drop due to welding of the moving contact piece. The angle between the scraper and the top of the slider is between 60-75°, avoiding the problem of the fuse failing to drop due to welding of the moving contact piece.

The present invention relates to a pressure switch (1) comprising: - a first electrical conductor (3a) and a second electrical conductor (3b) located at a distance from the first electrical conductor (3a), - a plunger (5) comprising a third electrical conductor (3c), the plunger (5) being movable in translation relative to the first and second electrical conductors (3a, 3b) between: - a first position in which the third electrical conductor (3c) is not electrically connected to the first electrical conductor (3a) and the second electrical conductor (3b), - a second position in which the third electrical conductor (3c) is electrically connected to the first electrical conductor (3a) and the second electrical conductor (3b), - a deformable diaphragm (6) configured to move the plunger (5) between the first and second positions under the effect of a pressure variation exerted by a fluid. Figure for the abstract: Fig. 1

Microelectromechanical systems (MEMS) switches are disclosed. Parallel configurations of back-to-back MEMS switches are disclosed in some embodiments. An isolation connection of constant electrical potential may be made to a midpoint of the back-to-back switches. In some embodiments, a separate MEMS switch is provided as a shunt switch for the main MEMS switch. MEMS switch device configurations having multiple switchable signal paths each coupling a common input electrode to a respective output electrode are also disclosed. The MEMS switch device includes shunt switches each coupling a respective output electrode to a reference potential. The presence of a shunt switch coupled to an output electrode enhances the isolation of the signal path corresponding to that output electrode when the path is open.

This application relates to a compression spring, a mating structure, and an electromagnetic relay. The compression spring engages between the moving spring lead-out plate and the moving spring plate in the moving spring portion. The compression spring includes: a main compression elastic section having opposing first and second ends, the first end engaging the moving spring plate, and the second end extending away from the moving spring plate; and a damping elastic section having opposing first and second portions, the first portion connected to the first end, and the second portion extending towards the moving spring lead-out plate and also away from the second end. Thus, the compression spring increases the force on the moving spring plate, causing the moving contact to quickly contact the stationary contact, thereby increasing the contact force between the moving and stationary contacts and resisting the repulsive force between them, ensuring reliable contact and achieving rapid compression of the moving spring plate.

The application discloses a high-conductivity and high-wear-resistance coating on a copper alloy surface and a preparation method and application thereof. The preparation method comprises the following steps: (1) depositing molybdenum powder on a copper alloy base body by a plasma spraying technology to obtain a first layer of porous molybdenum coating; (2) cleaning and drying the surface of the first layer of porous molybdenum coating, then melting and infiltrating copper infiltrating agents into the first layer of porous molybdenum coating by a plasma melting and infiltrating technology, and obtaining a first layer of copper-infiltrated coating through post-processing; (3) depositing molybdenum powder on the surface of the first layer of copper-infiltrated coating by the plasma spraying technology to obtain a second layer of porous molybdenum coating; and (4) cleaning and drying the surface of the second layer of porous molybdenum coating, then melting and infiltrating copper infiltrating agents into the second layer of porous molybdenum coating by the plasma melting and infiltrating technology, and obtaining a high-conductivity and high-wear-resistance coating on the surface of the copper alloy base body through post-processing. The coating formed by the application has high conductivity and high wear resistance, and effectively improves the load current friction and wear resistance of the copper alloy.

This application discloses a method for preparing silver-tin oxide electrical contact material for magnetic latching relays, comprising the following steps: depositing indium oxide and tin oxide sequentially on the surface of silver powder by physical vapor deposition to obtain a coated powder, wherein the indium oxide content is 0.3~0.8wt%, the tin oxide content is 8~10wt%, and the balance is silver; mixing the coated powder, yttrium-stabilized tetragonal zirconium oxide, and trace additives to obtain a composite powder, wherein the trace additives are copper oxide or tungsten oxide, and the mass ratio of yttrium-stabilized tetragonal zirconium oxide to coated powder is (2~5):100; hot pressing the composite powder at 25~35MPa to obtain a blank, and holding it at that temperature for 1~2h; hot extrusion processing to process the blank into a rod; multi-pass drawing to produce a wire, and performing intermediate annealing treatment during the drawing process, with each annealing time being 1~2h. The electrical contact prepared by this method has high contact resistance stability and arc erosion resistance.

The utility model discloses a kind of contact mechanism, load switch and electric meter, it is related to low-voltage electrical apparatus technical field.The contact mechanism includes shell and the moving contact, static contact and elastic member being set in shell, the one end of moving contact is connected with elastic member, the other end is used to be combined with static contact and be opened and closed, both ends of moving contact can be movable relative to static contact, elastic member is used to apply elastic force to moving contact in the opened and closed state to assist closing, elastic member is also used to apply elastic force to moving contact in the closed state to increase contact pressure.The contact mechanism can solve the problem that closing driving force is larger in prior art, energy consumption is higher, economic benefit is poorer, and contact pressure is smaller, reliability is poorer.

The present disclosure provides an isolating switch body, an isolating switch, and a power distribution system, and relates to the technical field of low-voltage electric appliances. The isolating switch body includes body modules, where each body module includes a plurality of layers of switch units which are stacked, the plurality of layers of switch units are connected through respective body rotating shafts, and a plurality of groups of body modules are spliced to form the isolating switch body; the body rotating shafts of the switch units are linked with an operating mechanism through a transmission mechanism in a first direction perpendicular to a stacking direction. The handle shaft is rotated to drive the operating mechanism to act, and then the body modules are driven through the transmission mechanism to achieve synchronous opening and closing. When the isolating switch body is applied to the isolating switch, the above body modules can be disposed in the first direction and the stacking direction separately, the two-way layout method can effectively reduce the length of the isolating switch in the first direction, and then the synchronization among the plurality of layers of switch units is ensured.

To suppress deterioration in contact pressure between a fixed contact point and a movable contact point by an electromagnetic repulsive force in an electromagnetic relay.SOLUTION: An electromagnetic relay comprises: a case containing a base; a first fixing terminal containing a first fixing contact point; a second fixing terminal containing a second fixing contact point; a movable contact piece; and a driving device. The movable contact piece contains a first movable contact point and a second movable contact point. The driving device makes the movable contact piece move in a movement direction including a first direction and a second direction. The first fixing terminal includes: a first contact support part; a first external part connection part; a first extension part; and a first connection part. The first contact support part is extended in parallel with a third direction to the first movable contact point from the second movable contact point, and the first fixing contact point is arranged. The first external part connection part is extended in a fourth direction orthogonal to the first direction and the third direction over an external part from an internal part of the case, and is overlapped with the first fixing contact point in the movement direction of the movable contact piece. The first extension part is extended in the third direction from the first external part connection part in the internal part of the case. The first connection part connects the first contact support part and the first extension part.SELECTED DRAWING: Figure 3

A relay hermetic terminal characterized by including: a metal container having a through hole; a pipe lead inserted through the through hole; an insulating material sealing the metal container and the pipe lead; and a terminal block made of a low-resistance metal, penetrating the pipe lead and secured to the pipe lead. The terminal block includes at least a body portion and a head portion, further the head portion has a fixation portion, and an axis of the fixation portion is not arranged coaxially with an axis of the body portion, and a relay contact device using the same are provided.

A low-voltage switching apparatus is disclosed which comprises a switching device having one or more switch poles. Each switch pole comprises first and second pole terminals that can be coupled with corresponding line conductors of an electric line; a fixed contact assembly is connected to the first pole terminal and includes first fixed contacts and second fixed contacts electrically insulated from the first fixed contacts; and a movable contact assembly connected to the second pole terminal and including first movable contacts and second movable contacts. The switching apparatus comprises, for each switch pole, a current limiter connected with the second fixed contacts and the first pole terminal of the switch pole. Each current limiter is configured to limit a current flowing along a series circuit including at least the second fixed contacts, the current limiter and the first pole terminal, during an opening maneuver of the switching device.

This application provides a power conversion device, a power supply system, and a control method for the power conversion device. The power conversion device includes an inverter circuit, a controller, and at least one on-grid unit, the inverter circuit includes at least one alternating current output phase cable, each alternating current output phase cable is configured to connect to a power grid through a corresponding on-grid unit, and each on-grid unit includes a first switch and a second switch that are connected in series. The controller is configured to: when detecting that a first switch in the at least one on-grid unit is in a to-be-cleaned state, control a second switch in an on-grid unit to which the first switch in the to-be-cleaned state belongs to be turned on; after the second switch is turned on, control the inverter circuit to adjust an output voltage; and when voltages at two ends of the first switch in the to-be-cleaned state are greater than or equal to a first voltage threshold, control the first switch in the to-be-cleaned state to be turned on. In this application, heat generated by the on-grid unit can be reduced, and safety and stability of the power conversion device can be ensured. In addition, this application is easy to implement and has high applicability.

The application discloses an automatic punching riveting device for copper-based silver-coated contacts and relates to the technical field of riveting machines. The device has the advantages that the riveting speed can be controlled during riveting, and the cracks of the silver layer caused by the instantaneous great impact force are reduced. The technical scheme is as follows: a contact block feeding mechanism is arranged outside the lower die, which is used for feeding the contact blocks into the riveting holes of the copper conductive base on the contact groove one by one and supporting the contact blocks by the lower riveting die, and then the upper die and the lower die are closed; after the upper die and the lower die are closed, the upper riveting die is located directly above the contact blocks and is close to the contact blocks; the lower riveting die is gradually and slowly moved upwards to rivet the contact blocks and the copper conductive base; and after the die is opened, the lower riveting die is moved upwards together with the upper riveting die at the same speed for a distance before stopping, so that the pressure maintaining purpose is achieved after riveting.

This utility model relates to the field of micro switch technology and discloses a novel tension spring micro switch, including a base. A slot is provided in the middle of the base, which engages with the right side of a movable bracket. A movable contact component is located above the movable bracket and is connected to the upper part of the movable bracket via a tension spring. A sliding groove is provided on the upper left side of the base, through which a button that cooperates with the movable bracket is slidably connected. Normally closed and normally open contact components, respectively, are located on the upper and lower sides of the right end of the movable contact component and engage with the base. A support foot is provided at the bottom of the base, with one side of the support foot located inside the base and connected to the left side of the movable contact component. This utility model applies to a novel tension spring micro switch, using a tension spring to connect the movable bracket and the movable contact component. The fulcrum of the movable bracket is located on the right side of the base, significantly increasing the switch lever arm length and ensuring contact pressure at the switch contacts while achieving the light pressure requirement of the overall switch.

This invention belongs to the field of electrical switch technology and discloses a self-lubricating mechanism for the contacts of a frame circuit breaker. The mechanism includes a frame circuit breaker body, within which a moving contact group is fixedly installed. During rotation, the moving contact group can contact and separate from the stationary contacts, thereby controlling the on / off state of the circuit in the frame circuit breaker. A moving contact support plate is fixedly installed on the moving contact group, and a rotating shaft is fixedly installed within the moving contact group. This invention utilizes a shaft seal lubrication assembly on the outside of the rotating shaft. The rotational energy of the shaft during the opening and closing swing of the moving contact group drives a spiral blade to synchronously push grease, ensuring continuous and uniform penetration of the grease into the hinged joint surface between the rotating shaft and the moving contact support plate. This achieves automatic and long-term lubrication of the shaft hinge, effectively solving the problems of high rotational resistance, mechanism jamming, and accelerated wear caused by long-term dry friction of the rotating shaft in existing technologies. It significantly reduces the frictional loss during the swing of the moving contact group, ensuring smooth and stable opening and closing operation of the moving contact group.

A vacuum bottle (1) for a switching device comprising a first electrode (5) and a second electrode (6), each comprising a contact portion (8), the second electrode (6) being movable in an axial direction (X) relative to the first electrode (5) between a closed position and an open position, and a bellows seal (10) located around a stem (7) of the second electrode (6), the bellows seal (10) being adapted to conduct an electric current between an exterior of the vacuum bottle (1) and the contact portion (8) of the second electrode (6) when the second electrode (6) is in the closed position.

The application discloses a copper-chromium contact and a preparation method thereof, and belongs to the technical field of alloy contacts. The preparation method takes electrolytic copper and chromium powder as raw materials, prepares CuCr rod material with a taper structure, and then carries out electrode induction gas atomization treatment to obtain CuCr alloy powder with high sphericity, uniform particle size and small organization, and then obtains the copper-chromium contact through 3D printing technology. Through the method, the performance of the copper-chromium contact, such as arc ablation resistance, welding resistance and conductivity, can be effectively improved, and the problems of component segregation, Cr phase agglomeration, un-fusion and porosity defects existing in the printing components of the existing copper-chromium contact are solved.

The present invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. The circuit breaker includes a circuit breaker housing, and an operating mechanism, a contact system, a wire-incoming terminal, a wire-outgoing terminal, an arc-extinguishing chamber and a thermomagnetic tripping mechanism arranged in the circuit breaker housing. The contact system includes a first contact structure and a second contact structure which are arranged in synchronous rotation. In a height direction of the circuit breaker, an operating member of the operating mechanism, the contact system and the arc-extinguishing chamber are arranged sequentially; and in a length direction of the circuit breaker, the wire-incoming terminal and the wire-outgoing terminal are located at both ends of the circuit breaker, the contact system and the arc-extinguishing chamber are located between the wire-incoming terminal and the wire-outgoing terminal, the contact system and the arc-extinguishing chamber are located on one side of the thermomagnetic tripping mechanism, the wire-incoming terminal or the wire-outgoing terminal is located on the other side of the thermomagnetic tripping mechanism, and the first contact structure and the second contact structure are arranged side by side. The circuit breaker is more reasonable in internal layout, and provides a larger assembly space for the arc-extinguishing chamber.

This utility model discloses a magnetic latching relay with a guiding structure, comprising: a housing with a receiving cavity; a moving contact mechanism housed in the receiving cavity, the moving contact mechanism including a first bracket, a second bracket, and a second elastic element, one end of the first bracket cooperating and linked with a magnetic circuit mechanism, the magnetic circuit mechanism driving the first bracket to reciprocate along a first direction, a guiding structure provided between the first bracket and the inner wall of the housing; a moving contact assembly fixed on the second bracket; the second elastic element located between the first bracket and the second bracket; a stationary contact assembly housed in the receiving cavity, the stationary contact assembly cooperating with the moving contact assembly; the first elastic element providing auxiliary force to the first bracket; with this structure, the first bracket does not need to have a through hole, thus ensuring the strength of the first bracket; secondly, the outer side wall of the first bracket cooperates with the inner side wall of the housing to form a guiding structure, making the guidance more stable; and it also reduces one component, making installation more convenient.

The application belongs to the technical field of silver-based electrical contact materials, and relates to a silver-based electrical contact material with copper oxide modified zinc oxide phase enhancement and a preparation method and application thereof. The silver-based electrical contact material with copper oxide modified zinc oxide phase enhancement is disclosed, and the copper oxide modified zinc oxide is used as a composite reinforcing phase to improve the interface wettability, effectively improve the anti-melting welding performance, the anti-arc ablation characteristic and the conduction performance; these characteristics make the electrical appliance switch contact piece made of the material have higher reliability and longer service life in the low-voltage electrical appliance field, and meet the harsh requirements of high-performance electrical components.

A dual power transfer switch, including: a first switch K1, including a first movable contact 4 configured to be rotatable between a first position and a second position; a second switch K2 and a power electronic switch K3, which are connected in parallel and then connected in series with the first switch K1, the second switch includes a second movable contact 5, and the second movable contact is configured to be switchable between a third position and a fourth position; and a driving mechanism, configured to drive the first movable contact to switch between the first position and the second position and to drive the second movable contact to switch between the third position and the fourth position, in a first power supply operating mode of the dual power transfer switch, the first movable contact is in the first position, the second movable contact is in the third position, and the power electronic switch is in the OFF state, in a second power supply operating mode of the dual power transfer switch, the first movable contact is in the second position, the second movable contact is in the fourth position, and the power electronic switch is in the OFF state.

Embodiments of the present disclosure provide a contact assembly and an electrical device. The pair of stationary contacts of the contact assembly are spaced apart from each other and are disposed adjacent to a base. The pair of movable contacts are spaced apart from each other. A first support is rotatably coupled to the base about a first axis. The first support is switchable between a first position and a second position. An electrical connector is electrically coupled to the pair of movable contacts and is rotatably coupled to the first support about a second axis. The second axis is perpendicular to the first axis. In a case where the first support is in the first position, the pair of movable contacts are separated from the pair of stationary contacts. In a case where the first support is in the second position, the pair of movable contacts are rotatable about the second axis to respectively abut against the pair of stationary contacts. With such an arrangement, in a case where there is a height difference between the pair of stationary contacts during installation, the pair of movable contacts are rotatable about the second axis to respectively abut against the pair of stationary contacts.

The present disclosure provides a contact switch 100, a safety door and an elevator system. The contact switch comprises a plug 1 and a socket 2, the plug comprising a contact head 11 configured in a plate shape, the socket comprising a housing 23, an elastic member 21 and a contact point 22 arranged in the housing, where the elastic member comprises an avoidance portion 211 and a free 212 end extending toward the contact head relative to the avoidance portion, and the contact point is fixed to the free end and extends toward the contact head relative to the free end, wherein, when the plug is inserted into the socket, the contact head contacts the contact point to turn on the contact switch and to be spaced apart from the avoidance portion. The contact switch according to the embodiments of the present disclosure effectively prevents the increase in resistance caused by the contact between the contact head and the elastic member when the plug is engaged with the socket in a cost-effective manner.