33results about How to "No bad contact" patented technology

The invention relates to a water-based cutting fluid, comprising water, water-solubility polyether, high-level fatty alcohol, surfactant, extreme pressure additive, anti-corrosion agent, antiseptic. Compared with the prior art, the invention has better technical performance, longer service life, contains no sodium nitrous acid and unsulfated matter, has no stimulation and toxicity corresponding to the request of environment protection, can be used in cycling, has no oil frog produced, has no corrosion to machine tool and machinery, has strong separation ability, produces no oil contamination and has capacity of anti-rust.

A reactor unit includes a winding coil having aluminum wires wound around an iron core, and a copper-made electric terminal connected to end parts of the winding coil, in which the electric terminal has a pressing and connecting part for pressing and connecting aluminum wires of the winding coil at one end, and a welding part of a nearly flat shape at other end, so that the electrical connection between dissimilar materials is realized at low cost and high reliability.

An electromagnetic relay having: an iron core around which a coil is wound and on which a magnetic pole portion is provided; an armature which is attracted to and separated from the magnetic pole portion 1a of the iron core and driven; a contact point portion which comes into contact with and is separated from its partner, when the armature is driven; and a switch in which an operation portion which can be pressed so that the contact point portion comes into contact with and is separated from its partner, when the armature is not driven, is extended to the direction which is intersected with the pressing direction; and a case having an opposing portion opposite to the operation portion, the electromagnetic relay is structured such that, in at least either one of the operation portion or the opposing portion, the contact portion which can come into contact with the other when the operation portion is not pressed, is protruded toward the other.

The invention belongs to the technical field of illumination devices, and in particular relates to a safe lamp holder solving the technical problems of poor technical safety, and the like of the prior art. A jack is arranged at one end of a body and internally provided with a conductive leaf spring, the outer surface of the body is provided with a threaded section for mounting a lampshade, the body is provided with an electrode at the other end and provided with a transversal channel at one side, one port of the transversal channel is arranged at one side of the conductive leaf spring, the other port of the transversal channel is arranged at the threaded section, and the transversal channel is internally provided with an elastic clutch mechanism which can ensure that the electrode is electrically connected with the conductive leaf spring under the action of the lampshade when the lampshade is mounted in the threaded section of the body and can ensure that a circuit between the electrode and the conductive leaf spring is broken when the lampshade is separated from the threaded section of the body. The invention has the advantages of simple structure, easy processing, manufacture and assembly, safety, reliability, high working stability, long service life without causing poor contact after long-term use, can be used for normally switching on the internal circuit when the lampshade is mounted and can be used for switching off the internal circuit when the lampshade is dismounted so as to avoid burning or electric shock accidents.

The disclosed composite-type fixed contact for a tap selector of on-load tap changer comprises: a terminal, a voltage equalizing end, a transitional coupling end, and a contact end with some part inserted in the mounting hole of mounting plate as cuboid and the part contacted with movable contact as column arc shape. This invention is simple and smart to improve action reliability greatly for spread.

The invention provides a working solution for water-based line cutting process. The working solution for the water-based line cutting process comprises the following components in parts by weight: 13-16 parts of triethavolamine, 2-3 parts of sodium borate, 5-8 parts of fatty alcohol polyoxyethylene ether organic phosphate, 2-3 parts of petroleum sodium sulfonate, 3-5 parts of acrylamide, 2-3 parts of polyvinyl alcohol, 2-3 parts of polyacrylamide, 1-2 part(s) of fatty acid polyoxyethylene ether methyl ester, 1-1.5 part of polymaleic anhydride, 0.8-1.2 part of sodium molybdate, 0.5-0.8 part of stannous mono-sulphate, 1.0-1.5 part of glycerol, 7-9 parts of ethyl alcohol and 46-50 parts of distilled water. The service life of the working solution for water-based line cutting process reaches 13-16 days; the technological properties are good; the surface smoothness of processed workpieces is improved; little pollution is caused to the environment; oil mist cannot be generated; zero erosion is caused to machine tools or machine elements; loose contact or mustiness is not caused to equipment.

The invention provides an automatic electrical control cabinet. The automatic electrical control cabinet comprises a cabinet body and a cabinet door, the cabinet door is a side-opening cabinet door, the cabinet body comprises a back wall and sidewalls, and the back wall and the sidewalls are integrally moulded. The control cabinet is also provided with a mobile backboard, the mobile backboard is parallel to the back wall and is movably arranged in the cabinet body, the height of the mobile backboard is equal to that of the back wall, the width of the mobile backboard is equal to that of the back wall, the mobile backboard comprises a plurality of mounting zones which are arranged in parallel, and the width of the plurality of mounting zones is equal. A safety protection device is arranged between the plurality of mounting zones and the back wall, the safety protection device is connected with the mobile backboard, and the safety protection device abuts against the back wall. According to the invention, each mounting zone can be individually extracted for installation and maintenance, the problem that the space of the electrical control cabinet is relatively small, and the electrical control cabinet is not liable to maintain is solved, and the installation and maintenance efficiency is greatly improved.

The invention discloses an ultrasonic spindle and an ultrasonic machine tool comprising the same. For the ultrasonic spindle, the front end of a push rod is provided with an electric guide head, and adetachable sleeve body is internally provided with a conductive adapter, so that when the conductive adapter needs to be repaired or replaced, the sleeve body needs to be disassembled only to separately repair or replace the conductive adapter and then is installed on the push rod, and operation is simple and convenient; an electric wire is connected to the electric conduction head, and repeateddisassembly and assembly can be realized without being affected by the electric wire, so that the maintenance cost of the ultrasonic spindle can be effectively lowered; and meanwhile, for the ultrasonic spindle, by arranging an electrical connector at the rear end of a knife handle body and the conductive adapter in the sleeve body, the contact electrical connection part between an ultrasonic knife handle and a rotating shaft is located in the ultrasonic knife handle or the rotating shaft rather than being exposed at a gap between the ultrasonic knife handle and the rotating shaft, so that theelectric leakage phenomenon is capable of being avoided, and the potential safety hazard is eliminated.

The invention discloses an easy-to-install magnetic-suction-butt waterproof and reinforced LED light cluster component comprising a light cavity component, a light body component, an outer sleeve component, a lens component and a light-transmitting cover plate. The light body component is installed inside the light cavity component, the outer sleeve component is installed above the light body component in a threaded mode, a waterproof rubber ring is arranged between the outer sleeve component and the light body component, the lens component is installed at the top of the outer sleeve component, the light-transmitting cover plate is installed at the top of the inner side of the lens component, the light-transmitting cover plate is fixedly connected with the top of the lens component, and aninner side installation inner base is arranged on the inner side of the light cavity component. The invention relates to the technical field of lighting. According to the easy-to-install magnetic-suction-butt waterproof and reinforced LED light cluster component, the split type design is adopted for component installation, overall disassembly is not needed for replacing and installation, and a mounting hole is also not needed, thereby bringing convenience for installation; and holistic heat dispersion is guaranteed while the waterproof performance is good, the maintenance test is simple, andthe waterproof performance is still good after the change of a subassembly.

The invention discloses an alternating-current electrical connecting line and a circuit board testing system with the same. The alternating-current electrical connecting line comprises a wire and further comprises a power input terminal, a first power output terminal and a second power output terminal which are arranged on the wire. The second power output terminal comprises an insulated shell and a pin seat type connector, and the space between the insulated shell and the pin seat type connector is filled with insulated filler used for fixing the pin seat type connector to the insulated shell. The electrical connecting line can meet the requirement for power supply to two loads and is safe and reliable.

The invention relates to the ultrasonic processing technology field and discloses an electric connection structure of an ultrasonic main shaft. Two conductive components are concentrated in a rod bodyat a front end of a pull rod and two conductors are concentrated at a rear end of a pop rivet so that a contact electrical connection portion of an ultrasonic knife handle and a rotating shaft is located in the ultrasonic knife handle or the rotating shaft, and is not exposed in a gap between the ultrasonic knife handle and the rotating shaft. Therefore, an electric leakage phenomenon can be avoided and a potential safety hazard is eliminated. At the same time, the two conductive components are concentrated in the same rod body so that double counterpoint is converted into single counterpoint, which greatly reduces counterpoint difficulty. During a sleeve joint process of the ultrasonic knife handle and the rotating shaft, the rod body and the pop rivet only need to be connected and the conductive components and the conductors can form effective electric connection. And then, stable electrical conduction can be formed between the ultrasonic knife handle and the rotating shaft, and poor contact is not generated.

The invention discloses a single-chip microcomputer device with a power failure prevention function. The device comprises a box body, a partition plate is fixedly connected between the left side and the right side of the inner wall of the box body, the top of the partition plate is fixedly connected with a bread board, the bread board is provided with a single-chip microcomputer chip, the top of the bread board is provided with a fixing device, the left side of the bottom of the inner wall of the box body is fixedly connected with a control box, and the right side of the bottom of the inner wall of the box body is fixedly connected with a standby power supply. The invention relates to the technical field of single-chip microcomputers. According to the single-chip microcomputer device with the power failure prevention function, the standby power supply can be automatically turned on to supply power to a single-chip microcomputer control module under the power failure condition, the power failure prevention function is achieved, the single-chip microcomputer control module can continue to work when the power supply is powered off, the single-chip microcomputer chip is limited through a limiting block, the single-chip microcomputer chip cannot be loosened, the single-chip microcomputer module is stable in contact with a circuit, poor contact is avoided, and loss caused by the fact that the single-chip microcomputer module is suddenly powered off and cannot work is avoided.

The invention discloses a vehicle interior roof with heating and flame-retardant functions. The vehicle interior roof comprises a top plate, a heat insulation layer is arranged below the top plate; flexible carbon fiber cloth is arranged below the heat insulation layer; a conductive strip is arranged on the edge of the flexible carbon fiber cloth; the conductive strip is connected to a conductivewire; a lint layer is arranged under the flexible carbon fiber cloth; the flexible carbon fiber cloth is arranged in the vehicle roof, the flexible carbon fiber cloth can be electrified in winter to rapidly heat the interior of a vehicle, flowing wind cannot be generated, discomfort caused by the fact that the wind blows the skin is avoided, the heating efficiency is high, and the power consumption is low.

The invention relates to the technical field of communication equipment, and discloses stable CPE equipment with a windproof function, and the equipment comprises a CPE equipment body, wherein the lower surface of the CPE equipment body is fixedly connected with a rectangular rain cover, the inner wall of the rectangular rain cover is fixedly connected with a fixed pipe, and the side wall of the fixed pipe is provided with a rectangular through hole; an arc-shaped block is movably connected to the hole wall of the rectangular through hole, a connecting pipe is fixedly connected to the bottom end of the fixing pipe, a circular groove is formed in the outer wall of the rectangular rain cover, a threaded hole is formed in the groove wall of the circular groove, an inner hexagon bolt is in threaded connection with the hole wall of the threaded hole, and a rolling bearing is fixedly connected to the end, close to the fixing pipe, of the inner hexagon bolt; and the outer walls of the rollingbearings are fixedly connected with the outer walls of the arc-shaped blocks. According to the invention, the protection effect of the CPE equipment can be effectively improved, the stability and reliability of wireless network signals of the CPE equipment are improved, and the service life of the CPE equipment is guaranteed.