9results about "Contact materials" patented technology

The application discloses a structure-reinforced longitudinal magnetic contact and a vacuum arc-extinguishing chamber using the same, and belongs to the technical field of vacuum arc-extinguishing chambers. The structure-reinforced longitudinal magnetic contact comprises a static contact combined structure and a dynamic contact combined structure. The static contact combined structure comprises a static conductive rod, a static excitation contact seat welded at one end of the static conductive rod, a static stainless steel cup seat with a wing piece and a static contact piece. The dynamic contact combined structure comprises a dynamic conductive rod, a dynamic excitation contact seat welded at one end of the dynamic conductive rod, a dynamic stainless steel cup seat with a wing piece and a dynamic contact piece. The wing piece structure attached to the dynamic and static stainless steel cup seats is matched with the slotted gap of the dynamic and static excitation contact seats, and is installed in the longitudinal magnetic slotted gap to play a supporting role. The surfaces of the dynamic and static stainless steel cup seats and the attached wing pieces are coated with an insulating layer, and the electrical performance of the original contact is not affected. On the basis of meeting the insulation, current flow and excitation design of the contact, the mechanical strength of the contact is greatly reinforced.

This utility model relates to the field of silver contact technology for low-voltage electrical appliances, and in particular to a high-safety silver contact for low-voltage electrical appliances. It includes a first housing with a screw threadedly connected to its surface. A second housing is annularly arranged on the upper surface of the first housing. Two mounting cavities are formed inside the second housing, and snap-fit ​​devices are installed within each cavity. A button is slidably connected to the inner wall of the first housing. An emergency power-off device is installed inside the button. A reset device is provided between the push ring and the button. Two electrically connected moving contacts are located on the lower surface of the push ring, and two corresponding stationary contacts are located on the upper surface of the static ring. When the button fails to reset, the emergency power-off device, by screwing the push rod, disengages the stationary contacts from the moving contacts, putting the equipment in a shut-off state and preventing damage to the circuit and internal components.

This utility model discloses a surge backup protector, which includes a housing, a first conductive plate and a second conductive plate disposed at both ends thereon. The housing contains a discharge tube and graphite conductive blocks. The discharge tube has conductive portions at both ends, and the graphite conductive blocks are disposed at both ends of the discharge tube. A clamping part is provided within the housing, acting on one of the graphite conductive blocks to tightly press the other graphite conductive block against the first conductive plate, creating a clamping force between the two graphite conductive blocks to hold the conductive portions. Using graphite conductive blocks as static contacts and current transmission elements, their excellent conductivity reduces contact resistance, decreases power loss, reduces the risk of overheating and contact adhesion, and extends product life. Graphite conductive blocks exhibit stable high-temperature performance, are not easily melted or oxidized, are suitable for high-temperature environments, and have good wear resistance, ensuring reliability during frequent opening and closing operations.

The utility model discloses a kind of composite contact material of high-conductivity easy welding point, including material layer one, adopt silver-based alloy;Material layer two, adopt solder, connect in material layer one, for cooperating material layer one forms welding point;Material layer one covers material layer two, and the area of corresponding material layer two one face is greater than material layer two;It can also be including material layer one, adopt silver-based alloy;Material layer three, adopt copper, connect in material layer one;Material layer two, adopt solder, connect in material layer three, for cooperating material layer three forms welding point;Material layer one covers material layer two, and the area of corresponding material layer two one face is greater than material layer two. The scheme can be easily welded and inhibit solder overflow, improve welding quality stability.

The utility model relates to a contact technology field discloses a kind of step composite silver contacts, including contact body, the outside of contact body is provided with protection mechanism, the bottom of contact body is fixedly connected with multiple contact pins, the bottom of contact body is provided with positioning mechanism, the positioning mechanism includes two supporting plates, two The outside of supporting plate is fixedly connected in the bottom of contact body two sides, and the outside of multiple contact pins is located in the outside adjacent side of two supporting plates, the bottom of two supporting plates is fixedly connected with multiple connecting columns. In the utility model, the preliminary positioning of curved surface ring and the cooperation of contact pin significantly improve the alignment accuracy of contact, and the supporting plate and the connecting column provide stable support for the contact body, ensuring that the contact body does not shake or deviate during operation. Even under the condition of external force or vibration, it can also maintain good working condition.

The application discloses a high-entropy alloy particle reinforced copper-based contact material and a preparation method and application thereof, and belongs to the technical field of contact materials. The application adds a reinforcing phase high-entropy particle into a copper base to improve the anti-ablation performance of the contact material. The application mixes powders of five different elements, ball-mills, anneals, and obtains high-entropy alloy powder, then mixes copper powder and the high-entropy alloy powder, ball-mills, and obtains Cu-HEAs composite powder, and finally adopts SPS hot-pressing sintering technology to obtain the high-entropy alloy reinforced copper-based contact material. The Cu-HEAs contact material has excellent physical and mechanical properties, enhances the anti-arc erosion performance of the copper-based contact material, and prolongs the service life of the contact.

A kind of protection switch, it includes contact system one and contact system two, the contact system one and contact system two are in time sequence contact and separate in succession, the contact system one contacts conducting circuit one, the contact system two contacts conducting circuit two, the circuit one and circuit two constitute parallel branch, the contact system one and contact system two are in time sequence contact and separate in succession so that arc is generated between contact system one to ensure that protection switch has higher on-off breaking capacity, simultaneously, the parallel branch that circuit one and circuit two constitute can withstand greater short-circuit current when closing, so that protection switch also has higher short-time resistance capability.Therein, contact system one is to hit and combine, contact system two is clamped type, silver contact point is arranged on the contact system one to resist arc burning, clamped type contact system two is copper guide rod, the parallel branch that circuit one and circuit two constitute can withstand greater short-circuit current when closing, so that protection switch also has higher short-time resistance capability.

The utility model discloses an anti-adhesion contact structure which comprises a movable contact piece, a static contact head, a movable contact fixed on the movable contact piece and a static contact fixed on the static contact head, the movable contact is used for moving along with the movable contact piece to abut against the static contact, and the static contact is used for moving along with the movable contact piece to abut against the static contact. Therefore, the movable contact piece is connected with the static contact head. Wherein the movable contact and the static contact are made of the same material. According to the utility model, the movable contact is fixed on the movable contact piece, and the movable contact and the static contact are made of the same material, so that the problem of material transfer caused by different materials can be fundamentally solved, the possibility of contact adhesion is greatly reduced, and the product failure caused by adhesion is avoided; the performance of the relay in the working process is more stable, the service life of the product is prolonged, reliable electrical connection and stable on-off operation are ensured, and the increasingly strict requirements of the market on the product are met.

The application relates to the technical field of electric contact materials, and particularly discloses a fine-grain CuCr50 contact material and a preparation method thereof. The preparation method of the fine-grain CuCr50 contact material comprises the following steps: electrostatic spinning treatment is performed on a copper foil by using a chromium-containing spinning solution to obtain a spun copper foil; the spun copper foil is cold-pressed into a shape, and then hydrogen reduction and discharge plasma sintering treatment are sequentially performed to obtain the fine-grain CuCr50 contact material. According to the application, Cr fibers are generated on the surface of the copper foil through the electrostatic spinning technology, and the cold pressing, hydrogen reduction and discharge plasma sintering processes are combined to prepare the CuCr50 contact material which has a uniform fine-grain structure and excellent comprehensive performance, and the technical problems of the existing CuCr contact material, i.e., the coarse Cr phase grains and the poor mechanical and electrical properties of the CuCr contact material, are solved.