5results about How to "Ensure conductivity" patented technology

The application belongs to the technical field of aerogels, and particularly relates to a polypyrrole reinforced polyimide aerogel and a preparation method and application thereof. The application directly uses a macroscopic ice block as a hard template for preparation of polypyrrole, and through introduction of a cyclic molecule hydroxypropyl-beta-cyclodextrin with a hydrophilic-hydrophobic dual function as an array growth aid, a polypyrrole array with a self-supporting structure is prepared. The array is in-situ compounded with polyamic acid, and through freeze drying and thermal imidization, a polypyrrole reinforced polyimide aerogel is prepared. The aerogel has high mechanical strength and high conductivity, and can be used as a conductive reinforcing filler for polyurethane in the technical field of 3D printing, solves the compatibility problem of the conductive polypyrrole and a polyurethane resin matrix, and further improves the mechanical properties of the polyurethane on the basis of improving the antistatic performance of the polyurethane.

The utility model provides a press-fitting conducting ring and a motor, and belongs to the technical field of conducting rings, the press-fitting conducting ring comprises an annular piece, and the annular piece is provided with at least one press-fitting hole; one part of the conductive fiber bundle is arranged in the metal pipe in a penetrating manner, the metal pipe tightly hoops the conductive fiber bundle, the inner pipe wall of the metal pipe is attached to the conductive fiber bundle, the metal pipe is inserted into the press-fitting hole, and the metal pipe is in interference fit with the press-fitting hole; the beneficial effects of the utility model are that the conductive fiber bundle can be implanted into the metal tube and forms the conductive brush in a pre-riveting manner, then the conductive brush can be pressed into the press-fitting hole, and in the press-fitting process, the metal tube shrinks and deforms due to the radial extrusion force of the press-fitting hole, so that the metal tube is in interference fit with the press-fitting hole, and the press-fitting effect is improved. The metal pipe and the annular piece are fixed together, the deformed metal pipe firmly hoops the conductive fiber bundle, and the metal pipe and the conductive fiber bundle are combined together in a surface contact mode, so that the conductive performance and the riveting strength are ensured, and the conductive fiber bundle cannot be broken.

This invention discloses a vacuum circuit breaker contact with a built-in reverse conductor, relating to the field of vacuum circuit breaker technology. The vacuum circuit breaker contact with a built-in reverse conductor includes a contact plate, a contact cup, a conductive rod, a reverse conductor, and a support structure. The contact plate is connected to the top of the contact cup, the conductive rod is connected to the contact cup, and the reverse conductor is disposed inside the contact cup. The support structure is connected to the circuit breaker housing via an insulating rod to ensure its relatively fixed position. A through groove is formed at the bottom of the contact cup, corresponding to the support structure passing through the through groove. Several first helical grooves are formed on the sidewall of the contact cup, and several second helical grooves are formed on the sidewall of the reverse conductor. The rotation direction of the second helical grooves is opposite to that of the first helical grooves. The vacuum circuit breaker uses this vacuum circuit breaker contact with a built-in reverse conductor. This invention can solve the problem in the prior art where residual magnetism between poles affects the breaking effect during interruption in DC vacuum circuit breakers, thus improving the breaking performance and reliability of DC vacuum circuit breakers.

The utility model discloses a sectional embedded PCB convenient to ground relates to embedded PCB field, the utility model discloses a mainboard, the mainboard includes mainboard body, be equipped with a plurality of first embedded slot and a plurality of second embedded slot along the first direction extension along the second direction extension on the mainboard body, the utility model discloses a embedded board is set up, and embedded board combination can perfect fit the grid -like embedded channel of crisscross on the mainboard, and the interference fit further strengthens the connection stability. The detachable design of the pin and the pin slot, cooperate with the anti -drop boss and the arc concave structure, both stable electrical connection and convenient after -sales. In addition, the embedded board edge ladder guide structure and the two -way clamping, the disassembly gap formed by the extension of the welding ear, solve the many pain points of traditional grounding mode together, and the practicality, reliability and maintainability of grounding structure have been improved significantly.

The utility model discloses a copper-nickel composite busbar of a high-power lithium battery pack of a cross-country motorcycle, which comprises a copper-nickel composite busbar body, a connecting component is arranged on the copper-nickel composite busbar body, and a protective component is arranged on one side of the copper-nickel composite busbar body. According to the copper-nickel composite busbar, the connection stability is ensured, the connection looseness is effectively prevented, the connection reliability can be kept even in the severe environment of vibration or impact, meanwhile, the protection assembly arranged on the copper-nickel composite busbar body can effectively absorb vibration and impact, buffer protection is provided for the busbar, and the service life of the busbar is prolonged. Connection looseness or structural damage caused by external impact is prevented, the stability of the busbar in a severe environment is ensured, and damage of excessive vibration to the busbar is avoided.