709results about "Contacts" patented technology

The invention relates to the technical field of power equipment, in particular to a vacuum pole-mounted circuit breaker, which comprises a vacuum arc-extinguishing chamber and a mechanism box, a static contact and a moving contact are inserted in the vacuum arc-extinguishing chamber, and under the action of the mechanism box, the moving contact can be close to or far away from the static contact and can be conducted with the static contact; a conductive part is arranged between the static contact and the moving contact, the conductive part can generate elastic deformation, can be in stop fit with the static contact or the moving contact, and is configured to be conducted with the static contact and the moving contact before the static contact and the moving contact are conducted. Therefore, the problem of arc erosion between the static contact and the moving contact is effectively avoided in a mode of transferring an arc generation position, the bounce amplitude of the moving contact is reduced by utilizing the elastic deformation characteristic of the conductive part, the service life of the static contact and the moving contact can be ensured while the wear of the static contact and the moving contact is reduced, and the service life of the static contact and the moving contact is prolonged. And the conductivity between the static contact and the moving contact can be ensured.

According to one embodiment of the present disclosure, a vacuum circuit breaker may include: a pressure vessel filled with an insulating gas of a predetermined pressure; a vacuum interrupter provided inside the pressure vessel and having a fixed electrode and a movable electrode in a vacuum tube in a vacuum state; a bellows provided to seal a gap between the vacuum tube and the movable electrode; a movable rod, one end of which is connected to an end portion of the movable electrode via an insulating link, and which is capable of penetrating the pressure vessel and reciprocating in an axial direction while maintaining airtightness; a drive rod which is provided outside the pressure vessel at the other end of the movable rod and which transmits the driving force of the drive unit to the movable rod; and a contact pressure spring, one end of which is supported by the movable rod and the other end of which is supported by the driving rod, in which a ratio of a self-closing force of the vacuum interrupter to a minimum closed contact pressure is set to a predetermined ratio.

In accordance with an embodiment, a microelectromechanical system (MEMS) switch device includes: a substrate; a switching membrane disposed above the substrate; a pull-in electrode disposed above the switching membrane; a metal contact disposed on the switching membrane; and a pull-back electrode disposed below the switching membrane, wherein the switching membrane is movable between an open position and a closed position, and wherein in the closed position, the metal contact electrically connects two RF signal lines.

The application discloses a quick closing operation mechanism of a circuit breaker, which comprises a shell, a handle, a static contact support, a movable contact support, a linkage and a tripping mechanism, the handle and the movable contact support are rotationally arranged in the shell, a contact torsional spring is arranged between the shell and the movable contact support, a long circular hole is arranged on the movable contact support, a pin shaft is arranged in the shell and passes through the long circular hole, and the movable contact support rotates relative to the pin shaft; an installation area is arranged in the shell, an energy storage limiting piece is slidably arranged in the installation area, a movable area is arranged on the handle, an abutting portion is arranged on the movable contact support, the energy storage limiting piece is provided with a moving portion and a matching portion which are arranged in the movable area, the application can make the movable contact support move beyond the stroke, is not limited to a fixed point, improves the contact force, and based on the energy storage limiting piece, the last action of closing is realized to store energy, the oxides between the movable contact and the static contact can be quickly broken down, and the overall closing effect is improved.

The invention provides a high-sensitivity double-point contact single-pole microswitch. The high-sensitivity double-point contact single-pole microswitch comprises a base group, the base set is sleeved with a shell, and a mounting cavity is formed between the base set and the shell. An upper contact piece, a lower contact piece and a supporting frame which are connected with the base set are sequentially arranged in the installation cavity. A flat reed assembly and a bow reed are connected to the supporting frame. The shell is provided with a key, and the key is matched with the flat reed assembly to work; the support frame is provided with an inclined trapezoidal groove, and the bow reed is connected with the support frame through the inclined trapezoidal groove; the flat reed assembly comprises a flat reed, one end of the flat reed is provided with a plurality of movable contacts, and the other end of the flat reed is connected with the supporting frame. According to the double-insurance single-pole microswitch, the double-insurance problem of contact of an existing single-pole microswitch is solved, a traditional single-point contact mode of a single movable contact and a contact piece is changed into double-point contact, and a single-insurance single-pole microswitch is improved into a double-insurance single-pole microswitch under the condition that indexes such as the boundary dimension and the action characteristic of the switch are not changed; contact reliability of the switch is greatly improved, and actual requirements are met.

The utility model discloses a relay. The relay comprises a contact assembly and a stopper. The contact assembly comprises two movable spring parts which are arranged side by side, and a parallel circuit structure is formed when the two movable spring parts make contact with each other. The stop piece is arranged between the two movable spring parts and used for stopping the two movable spring parts, so that the deflection of bending deformation generated after the two movable spring parts attract each other due to the fact that current passes through the parallel circuit structure is smaller than or equal to a threshold value.

The invention discloses a copper-chromium contact with high fusion welding resistance and a preparation method thereof, and belongs to the technical field of contact materials. The preparation method comprises the steps that high-purity electrolytic chromium powder and electrolytic copper powder serve as raw materials, after acoustic resonance powder mixing is conducted, powder upsetting and cold isostatic pressing are conducted in sequence, and a green body is obtained; carrying out gradient sintering and finish machining treatment on the green body to obtain a copper-chromium electrode bar; the copper-chromium electrode bar is subjected to atomization powder making, and copper-chromium alloy powder is obtained; after the copper-chromium alloy powder is sequentially subjected to sheathing, heat treatment, seal welding and hot isostatic pressing sintering, a sheath is removed, and a prefabricated body is obtained; and after the prefabricated body is processed, the surface is remelted by green laser, and the copper-chromium contact with high welding resistance is prepared. According to the method, by improving the purity of the copper-chromium contact and optimizing the morphology and distribution of the chromium particles, the prepared contact is high in purity, the chromium particles are fine and uniform in distribution, the welding resistance and the breaking performance are excellent, and the method is suitable for a high-voltage-grade arc extinguish chamber.

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.

A contactor device includes a movable contact configured to selectively open / close an electrical circuit. The contactor device includes an actuator assembly having a shaft, a movable contact retention member, and a coupler coupling the shaft to the movable contact retention member. The movable contact retention member may be a single piece comprising a central portion, a first side portion, and a second side portion, and the first side portion and the second side portion are angled relative to the central portion.

A relay 1 comprises a first fixed contact 7,15 (figure 1), a contact arm 8 having a first movable contact 9,14, and an electromagnetic drive unit 2 having an armature 3 and a yoke 4. A connector 10 (f

To provide a relay capable of reducing a temperature rise.SOLUTION: A base of the relay has a middle area, a first contact area, and a second contact area; the middle area is arranged between the first contact area and the second contact area; the first contact area and the second contact area are spaced along the first direction; a pair of contact parts is arranged in the first contact area and the second contact area; each contact part comprises two sets of movable contact part; each set of movable contact parts comprises a movable contact piece, a movable contact, and a static contact; the movable contact piece has a first end and a second end in a second direction; the movable contact is arranged on the first end, and the static contact is arranged on the second end; the two movable contacts of each contact part correspond to the two static contacts, respectively; the second direction is perpendicular to the first direction; and a magnetic circuit part is arranged on the middle area of the base, and configured to drive four movable contact pieces of the pair of contact parts through a push rod assembly, thereby closing or disconnecting the movable contact and the static contact.SELECTED DRAWING: Figure 3

The invention relates to the technical field of electric tool switches, in particular to a redundant contact electric tool switch which comprises a shell, a mounting structure, a control structure, a sealing structure, a driving structure and a triggering structure. The arrangement of the trigger structure realizes double-point contact, the design of the redundant contact system avoids the problem of poor contact caused by abrasion of a single contact, avoids the problem of repeated disassembly of the switch for maintenance, improves the practicability, and meanwhile, the movable and static contacts are not easy to fall off when being in contact, are strong in stability, and are convenient to maintain. The arrangement of the sealing structure ensures the overall sealing performance inside the switch, avoids the problem of poor contact caused by dust entering the switch, avoids the problem that a sealing ring at the joint of the button and the shell is easy to fall off, and the arrangement of the control structure realizes the switching between a switching mode and a rotating speed adjusting mode. The rotating speed of the electric tool is adjusted by pressing the button, and flexibility is high.

The invention relates to the technical field of metal manufacturing equipment, and particularly discloses a feeding device of a silver-copper alloy contact re-pressing machine, which comprises a workbench, and further comprises a feeding mechanism movably mounted on the upper surface of the workbench; and the precision control mechanism is fixedly mounted in the feeding mechanism. According to the feeding device of the silver-copper alloy contact re-pressing machine, the feeding operation of a contact blank can be automatically completed through the arranged feeding mechanism, the problem that the production efficiency is not high due to the fact that manual filling needs to be frequently used in traditional equipment is solved, meanwhile, the production safety is greatly improved, and the feeding device is of an independent structure and is convenient to operate. The automatic feeding device is simple in structure and capable of automatically matching with different production lines, applicability of the automatic feeding device is greatly improved, meanwhile, contact blanks are fed into a mold after preparation is completed, automatic continuous production efficiency of the automatic feeding device is greatly improved, and the problem that defective products are generated due to the fact that excessive contact blanks are fed at a time when a leakage groove is opened is solved.

The invention provides a method for driving a five-terminal electromagnetic relay, which can inhibit the generation of freezing on the NC contact side. In a method for driving a five-terminal electromagnetic relay, the ambient temperature of the electromagnetic relay is acquired in a state in which a movable contact is in contact with a first fixed contact when the relay is operated on, and when the ambient temperature reaches a predetermined temperature at which freezing is likely to occur on a second fixed contact, the electromagnetic relay is driven at a predetermined timing. After the relay operation is instantly turned off and the movable contact is brought into contact with the second fixed contact, the relay operation is immediately recovered to be turned on.

The utility model discloses a novel high-voltage auxiliary switch, which relates to the technical field of switches and comprises a shell, an upper cover, a push rod, a binding post, a reset spring, a static contact, a touch assembly, a pin shaft and the like. When the moving contact and the static contact are in a disconnected state, the switch can form a dual-port structure between the two static contacts. The unique design can effectively improve the power frequency withstand voltage value of the port between the two static contacts under the condition of a small structural volume. Compared with a traditional high-voltage auxiliary switch, the high-voltage auxiliary switch has the advantages that the risks of insulation breakdown and arc reignition are reduced due to the larger contact breaking distance, the stable and reliable electrical performance in a high-voltage environment is ensured, the safety and stability of equipment operation are greatly improved, and the conditions of equipment damage and production interruption caused by electrical faults are reduced.

Provided is a relay, comprising a contact container (10), a pair of static contact lead-out terminals (20), a first magnetic conductor (40), a push rod assembly (50), and a movable contact assembly (53). The first magnetic conductor (40) comprises a connecting portion (410) and a magnetically conductive portion (420). The push rod assembly (50) comprises a rod portion (51) and a second magnetic conductor (60). The second magnetic conductor (60) is staggered with the magnetic conductive portion (420) along an axial direction of the rod portion (51), and corresponds to a connecting portion (4110) The movable contact assembly (53) is movable between a first position and a second position relative to a support base (52) along the axial direction of the rod portion (51), and the movable contact assembly (53) comprises a movable reed (54) and a third magnetic conductor (55).The distance between the third magnetic conductor (55) and the connecting portion (410) is greater than the distance between the third magnetic conductor (55) and the magnetic conductive portion (420).

The invention provides a preparation method of a high-performance low-inclusion copper-chromium alloy contact material, and relates to the technical field of preparation of copper-chromium alloy contacts, and the preparation method comprises the following steps: weighing, proportioning and taking chromium powder and a copper material, treating the chromium powder and a copper block before alloy preparation, preparing a copper-chromium alloy, processing and preparing the copper-chromium alloy contact, and sealing and packaging the copper-chromium alloy contact. The copper-chromium alloy contact is prepared by adopting a vacuum infiltration method, compared with a traditional preparation method, the whole preparation process of the vacuum preparation method is in a vacuum environment, mixing of gases such as oxygen and nitrogen in the preparation process can be effectively avoided, formation of impurities such as oxides and nitrides in the preparation process of the copper-chromium alloy is avoided, and the copper-chromium alloy contact is prepared by adopting the vacuum preparation method. According to the preparation method, the purity of the copper-chromium alloy is reduced, the prepared copper-chromium alloy can have high density, the internal structure of the produced alloy can be uniform, then the alloy has higher strength and hardness, and residual gaps existing in the alloy prepared through a traditional preparation method are avoided.

A relay, comprising a contact container (10), a pair of fixed contact leading-out terminals (20), a first magnetic conductor (40), a push rod assembly (50), and a moving contact assembly (53), wherein the first magnetic conductor (40) is fixedly arranged relative to the contact container (10); the push rod assembly (50) comprises a push rod portion (51) and a second magnetic conductor (60); the push rod portion (51) is movable relative to the contact container (10) in the axial direction of the push rod portion (51); and the second magnetic conductor (60) is arranged at one end of the push rod portion (51), and is staggered apart from the first magnetic conductor (40) in the axial direction of the push rod portion (51). The moving contact assembly (53) comprises a moving contact spring (54) and a third magnetic conductor (55), wherein in the axial direction of the push rod portion (51), the third magnetic conductor (55) is fixedly connected to the side of the moving contact spring (54) facing away from the first magnetic conductor (40) and the second magnetic conductor (60).

To make it possible to generate the contact pressure between the fixed contacts and movable contacts with little variation in an electromagnetic relay having multiple contacts, that is, more than two combinations of fixed contacts and movable contacts.SOLUTION: A movable support 30 supports a first movable element 22 via a first pressure spring 26 and a second movable element 24 via a second pressure spring 28. The first movable element 22 includes a first movable contact 22a and a second movable contact 22b, and the second movable element 24 includes a third movable contact 24a and a fourth movable contact 24b. Therefore, when each of the movable contacts 22a, 22b, 24a, and 24b is pressed against a corresponding fixed contact, the change in position of the first movable element 22 relative to the movable support 30 is absorbed by the first pressure spring 26, and the change in position of the second movable element 24 relative to the movable support 30 is absorbed by the second pressure spring 28. This makes it possible to generate contact pressures between the fixed contacts and the movable contacts with little variation.SELECTED DRAWING: Figure 1

A high-performance clamping piece type auxiliary switch belongs to the technical field of auxiliary switches. The front mounting plate, the front cover plate, the plurality of same base plate units, the rear cover plate and the rear mounting plate are sequentially connected through long countersunk screws, the driving shaft simultaneously penetrates through the middle parts of the front mounting plate, the front cover plate, the base plate units, the rear cover plate and the rear mounting plate, and each base plate unit comprises an upper base plate and a lower base plate which are the same; each substrate is provided with two movable contact pieces, two static contact pieces and a shaft gasket, a magnetic block mounting groove is formed in the middle of each substrate, a magnetic block is arranged in the magnetic block mounting groove of the upper substrate of each substrate unit, and the four movable contact pieces and the two shaft gaskets of each substrate unit are riveted together through brass rivets. According to the utility model, the through-current capability and the on-off instant stability of the contact can be effectively improved, the magnetic blow-out function and the 360-degree time sequence switching capability are high-efficiency, and the accurate indication function is also realized.

A pull-up circuit for circuit breaker contacts is disclosed. The pull-up circuit of the present disclosure is configured to, under the control of a microcontroller, inject a current into a contact of a circuit breaker to remove the oxidation therefrom (which may cause undesired resistance to current flow). The microcontroller may also perform a measurement to determine current flow through the contact. The activation of the pull-up circuit by the microcontroller may be performed periodically to limit the build-up of oxidation on the contact of the fuse, with each activation lasting for a predetermined time period.

The approach presented here provides a switching unit (100) with a selector lever (110) having a handle (200) and a deflection element (220), wherein the selector lever (110) is movably attached to a housing (130) by means of an axle (120), and the axle (120) is arranged between the handle (200) and the deflection element (220). Furthermore, the switching unit (100) comprises at least one actuating element (225), which is movably arranged on the axle (120) and has at least one area (300a) comprising a magnetic or magnetizable material, wherein the actuating element (225) is designed and arranged to be deflected by the deflection element (220). Finally, the switching unit (100) includes a magnet (235) which is arranged adjacent to the side of the axis (120) facing the deflection element (220) and which is designed to magnetically couple with the area (300a).

The invention provides a silver-nickel-titanium electric contact material and a preparation method thereof. By adopting a nickel-titanium alloy material as a main additive, the welding resistance of the electric contact material is improved while the good machinability of the material is maintained. NiTi is introduced as a main additive to be added into an Ag matrix to improve the fusion welding resistance of the material, meanwhile, a small amount of trace copper is also added to mainly improve the wettability of the material, and the C powder and the titanium carbide powder improve the fusion welding resistance of the material. In addition, a powder metallurgy process is adopted, material proportion is easy to control, process flow is short, and cost is low. The rapid plasma electric spark sintering speed is high, the time is short, and the material density is high.

The invention discloses a three-loop high-voltage contactor with normally-open or normally-closed auxiliary contacts, and relates to the technical field of high-voltage contactors, an auxiliary movable contact spring in an auxiliary loop is arranged in the middle of a fixed support, and an auxiliary terminal outgoing line and a wire are jointly led out from the middle of a product; a brand-new high-voltage contactor internal structure frame is shown, the requirements of line and signal export of a user are met, installation and use are convenient, and the technical problem that the lead mode in an existing high-voltage contactor is limited is solved. A static contact, a first movable contact piece and a second movable contact piece are arranged, the static contact comprises a first main contact, a second main contact, a third main contact and a fourth main contact, and the first main contact and the second main contact correspond to the first movable contact piece to form a first main loop; and the third main contact and the fourth main contact are arranged corresponding to the first movable contact piece to form a second main loop, so that the product is provided with two main loops at the same time to realize switching of a main current load loop.

This invention discloses a novel multi-component silver-based contact material and its preparation method. The borides in the material possess both metallic and covalent bonds, exhibiting dual characteristics of ceramics and metals. Boride ceramics possess excellent comprehensive properties such as high hardness, high modulus, good thermal and electrical conductivity, and high chemical stability, thus becoming an ideal reinforcing phase for silver-based contact materials. The novel multi-component silver-based contact prepared according to the above proportions exhibits excellent arc-quenching performance, resistance to arc erosion, and low material transfer and mass loss. The main role of ZrB2 in the arc erosion process lies in its easily decomposable properties, which enhance the material's arc-quenching ability. Furthermore, boron is oxidized to B2O3 in air, providing a certain slag removal capability. Simultaneously, the oxygen generated by the decomposition of ZrO2 under arc action also has an arc-quenching effect, and Zr and Ag can form a solid solution, reducing splashing losses.

A relay includes an insulating cover having a contact chamber and a pair of first through holes in communication with the contact chamber; a pair of static contact leading-out terminals passing through the pair of first through holes; a fixing member including a fixing part and a connector with a tubular structure, the connector is fixedly connected between the insulating cover and the fixing part; a moving part within the contact chamber and movably connected to the fixing member; a first magnetizer within the contact chamber and connected with the moving part; and a movable member within the contact chamber and including a movable contact piece. The first magnetizer is movable relative to the movable member through the moving part and is configured to adjust a distance between the first magnetizer and the movable member according to a value of a current flowing through the movable contact piece.

The present invention relates to a hybrid ground protection device for a modular voltage power converter for converting a primary AC voltage having one or more phases into a secondary AC voltage. The hybrid ground protection device includes input and output contacts connected to the voltage input and voltage output of a single module of the converter. The input and output contacts connected to the same single module are connected to varistors that are energized when the voltage drop across the varistor exceeds a first threshold. A non-conductive switch bar having a bridging contact can be moved from an operating position to a grounding position. In the grounding position, the bridging contact connects the input and output contacts of the single module to each other and to a ground terminal. In the operating position, the input and output contacts are not connected by the bridging contact and are not connected to the ground terminal (FIG. 2).

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 invention discloses a silver-saving type AgSnO2In2O3 contact material and a preparation method of the silver-saving type AgSnO2In2O3 contact material, and belongs to the technical field of silver-based contact materials. The preparation method of the contact material comprises the following steps: firstly, performing high-energy ball milling on specially prepared ITO conductive ceramic powder and ATO conductive ceramic powder according to the mass ratio of 1: 1 to obtain ITO. ATO composite conductive ceramic powder, and performing ball milling on the obtained ITO. ATO composite conductive ceramic powder and AgSnCu alloy powder according to the mass ratio of 100: 12-100: 16; and carrying out isostatic compaction, oxidation, sintering and extrusion on the obtained AgSnO2In2O3 composite powder containing the composite conductive ceramic reinforced phase to obtain the AgSnO2In2O3 composite powder containing the composite conductive ceramic reinforced phase. The contact material prepared according to the method is low in resistivity and high in welding resistance, and the purpose of saving silver can be achieved.

Provided is an in-plane sliding parallel capacitive radio frequency, RF, switch based on a superlubric structure. The RF switch includes a substrate, first to third drive components, an insulating layer, and a sliding component. Where a drive voltage is applied between the first and second drive components, the sliding component slides to the top of the first and second drive components under the action of a horizontal force; in this case, relatively large capacitance is formed between the first and second drive components and the sliding component, a RF signal is almost completely reflected, and the transmission is cut off. Where the drive voltage is applied between the second and third drive components, the sliding component slides to the top of the second and third drive components under the action of a horizontal force; in this case, no facing area between a first drive electrode and the sliding component exists in a vertical direction, the capacitance is rather small, and the RF signal may be transmitted basically without loss.