536 results about "Contact failure" patented technology

The invention discloses a driver controller detection system, which comprises an acquisition module, an acquisition module, a processing module, an identification module, a judgment module, an analysis module and a generation module, the acquisition module captures contact information and electromagnetic interference data of contacts in real time by means of a high-dynamic voltage sensor and a broadband EMC probe; the acquisition module is triggered by a locomotive signal and records dynamic working condition data; the processing module aligns the data, performs denoising and extracts fault parameters; the identification module scans the voltage waveform and judges the transient contact failure; the judgment module monitors EMC data and compares an instruction position, and judges misoperation; the analysis module analyzes fault association, judges a composite type and triggers an alarm; the generation module generates a detection report and a log. According to the system, a multi-dimensional monitoring network is constructed under a dynamic working condition, data reliability is guaranteed, faults are accurately identified, a compound fault source is positioned, and the safety and stability of locomotive operation are improved through risk grading early warning and automatic reporting.

The invention provides a quick connector for an automobile starting motor, and relates to the technical field of starting motor connectors, the quick connector comprises a butt joint A and a butt joint B. A metal plug is installed in the butt joint A, and the metal plug is connected with a wire; the butt joint B is in contact with the butt joint A, a metal insertion cylinder is installed in the butt joint B, the metal insertion cylinder is connected with a wire, and a metal plug is connected with the metal insertion cylinder; and the outer part of the butt joint A is connected with a rotary connecting sleeve. After the metal plug is inserted into the metal insertion cylinder, the end part of the movable head is in close contact with the innermost end of the connecting seat under the thrust influence of the small spring, so that the conductive connection effect between the metal plug and the metal insertion cylinder is ensured, and the occurrence of poor contact is effectively avoided. The invention relates to a connector for an automobile starting motor, which solves the problem that the plug-pull connecting part of the connector is easy to loosen due to vibration when the existing connector for the automobile starting motor is generally fixed by adopting a plug-in matched threaded connection mode and is in a high-strength vibration working condition in an automobile for a long time.

The invention discloses a contact type alarm output device for a mechanical accelerometer, and relates to the technical field of accelerometers, the contact type alarm output device comprises a dome shell, and the dome shell is provided with a first cavity; the first contact, the second contact, the first alarm output lead and the second alarm output lead are inserted into the dome shell in a penetrating mode, the first alarm output lead is connected to the end, inserted into the outside of the dome shell, of the first contact, and the second alarm output lead is connected to the end, inserted into the outside of the dome shell, of the second contact. The second alarm output lead is connected to the end, penetrating into the outer portion of the dome shell, of the second contact, one end of the metal spring piece is fixedly connected to the first contact, the other end of the metal spring piece is in point contact with the second contact, and the metal spring piece and the second contact are in point contact design. And in combination with mechanical pushing of the conical sleeve, tight contact and reliable conduction during alarm triggering are ensured, and mistaken contact or poor contact caused by vibration or impact is avoided.

The invention relates to the technical field of charging piles, and particularly discloses a charging pile with a self-locking type anti-falling direct-current charging gun, the charging pile comprises a charging pile body, the charging gun and a cable, the charging gun comprises a shell and a locking arm, a self-locking mechanism and a protection mechanism are arranged in the charging gun, the self-locking mechanism comprises a sliding sleeve, a sliding block and a connecting piece, and the sliding sleeve is connected with the cable. The locking arm is provided with a locking part and an unlocking part, the protection mechanism comprises a movable block, a reset spring and an overload spring, the cable has length redundancy in the charging gun, the cable drives the sliding sleeve to move by means of the self weight of the cable, the sliding block is driven to move to the position below the locking arm to form physical support, self-locking is achieved, poor contact is prevented, and when overload pulling force such as car sliding occurs, the cable is locked. The slide block is driven to cross the locking part and forcibly trigger the locking arm to unlock, and the overload spring is matched to push the charging gun to automatically separate; the problems that the charging gun is prone to loosening due to cable dragging and cannot be automatically released in danger are solved, and unification of rigid safety and flexible protection is achieved.

The invention relates to a MATLAB working condition prediction and ANSYS matching surface creep analysis method, and belongs to the technical field of mechanical engineering structure connection analysis and monitoring and computer-aided engineering software integration. The method comprises the following steps that a user inputs geometric parameters and typical working conditions through an MATLAB GUIDE interaction interface, and a system can generate a theoretical response curve of the matching surface pressure changing along with the magnitude of interference, the load and the rotating speed in real time and is used for evaluating the maximum allowable working parameter range. And then ANSYS is called to carry out batch finite element simulation, and actual contact pressure distribution and a creep strain cloud picture are obtained, so that the influence of different working condition combinations on the creep behavior of the matching interface is quantified. The method supports visual comparative analysis under the combination of multiple working conditions, and a user can intuitively master the evolution law and the creep development trend of the pressure distribution of the matching surface. The interactive critical failure discrimination module integrated in the system can automatically identify typical contact failure situations and perform significant annotation in images.

The invention provides a conduction tester for a wire harness connector, and particularly relates to the technical field of electrical testing of connectors, the conduction tester comprises a testing table plate and a tester body mounted on the top surface of the testing table plate, one side of the tester body is provided with an accommodating cabin, and one side of the tester body is provided with a display and a main controller; according to the conduction tester of the wiring harness connector, the limiting sliding block is stably matched with the limiting sliding rail on the cabin wall of the containing cabin, the probe seat can be accurately aligned with the connector in the clamping groove seat through the servo air cylinder, the probability of poor contact caused by manual insertion is greatly reduced, it is guaranteed that the test is smoothly carried out, and meanwhile the testing efficiency is improved. Through the cooperation of the pressure sensing part, the main controller and the force value regulator, the driving force of the linear driving part can be kept in a proper range, and the stable contact state of the probe and the connector is ensured, so that the test result is more reliable, and the test error caused by the contact problem is reduced.

The invention relates to the technical field of insertion loss test, and discloses a spring force control insertion loss test probe device which comprises a mounting seat, an elastic probe assembly and a fine adjustment assembly. A supporting frame is arranged at the bottom of the mounting base, the elastic probe assembly is located below the mounting base, the elastic probe assembly is connected with the supporting frame, the height of the elastic probe assembly is adjustable, the fine adjustment assembly is located on one side of the probe assembly, one end of the fine adjustment assembly is connected with the elastic probe assembly, and the fine adjustment assembly is used for adjusting the elastic value of the elastic probe assembly. The optimal contact pressure can be accurately set according to the characteristics of different circuit boards, poor contact caused by too small pressure or needle mark damage caused by too large pressure is avoided, the same set of device can adapt to the test pressure requirements of different circuit boards, and the problem that the fixed elastic K value cannot be adjusted, and consequently the needle mark difference between different boards is large is solved.

According to the double-fed fan wiring terminal contact fault on-line detection system provided by the invention, through electric-thermal-mechanical multi-physical quantity collaborative analysis, the early recognition rate of the terminal contact fault is remarkably improved; precise alarm under different load working conditions is realized by utilizing a self-adaptive threshold adjustment function of the edge calculation module; based on a multi-dimensional feature fusion algorithm of a cloud digital twinborn model, a material degradation rule calibrated by a laboratory is combined with real-time operation data, so that the prediction accuracy is greatly improved; an automatic response chain from early warning to emergency disposal is achieved through a grading decision mechanism, the manual inspection frequency is reduced, and meanwhile the fault positioning precision is further improved through three-dimensional coordinate positioning and adjacent terminal cooperative detection.

The composite terminal comprises a terminal body and a fixing sleeve, the terminal body comprises a welding part, a connecting part and a plugging part, the center of the plugging part is provided with a plugging hole, the center of the fixing sleeve is provided with a mounting through hole penetrating through the front end and the rear end of the fixing sleeve, and the plugging part is inserted into the mounting through hole to be welded and fixed to the fixing sleeve. The mounting through hole is communicated with the inserting hole, and the connecting part and the welding part are arranged on the outer side of the fixing sleeve. The composite terminal is simple in structure and rapid to install, a riveting wire part on the terminal body is omitted, a welding structure is adopted, the appearance of the terminal is simplified, the overall size of the terminal is reduced, a welding connection mode is adopted, the problem of mechanical stress relaxation is avoided, the vibration resistance and impact resistance are higher, and the service life of the terminal is prolonged. Stable transmission of electric signals is facilitated, and poor contact is avoided.

The invention provides a control method and device of charging equipment for a magnetic suction type ship, a medium and a controller, and aims to solve the problems that when an electric ship or a hybrid power ship is in shore for charging, a charging connecting device is prone to loosening, sealing failure, poor contact and the like due to stormy wave swing, and a magnetic suction fixing device is additionally arranged on the charging connecting device; the charging plug and the charging socket are firmly fixed through magnetic force, the stability and reliability of the charging process are remarkably improved, the charging failure caused by ship swing is effectively avoided, and the safety and efficiency of ship charging are guaranteed.

The invention relates to the field of conductive slip rings, in particular to a strong and weak current isolation conductive slip ring, which comprises a shell, a first contact compensation device, a second contact compensation device and a multi-layer shielding structure, and is characterized in that a strong conductive inner ring, a weak conductive inner ring, a strong conductive outer ring and a weak conductive outer ring are coaxially arranged in the shell; the first contact compensation device is fixed on the inner wall of the strong conductive outer ring and is used for adjusting the contact pressure between the electric brush and the strong conductive inner ring, the second contact compensation device is fixed on the inner wall of the weak conductive outer ring and is used for adjusting the contact pressure between the electric brush and the weak conductive inner ring, and the multi-layer shielding structure is arranged between the strong conductive system and the weak conductive system. And strong and weak current complete isolation is realized. The contact pressure between the electric brush and the conductive inner ring can be adjusted, the electric brush structure can automatically and elastically compensate along with abrasion of the conductive inner ring, it is ensured that the contact surface always keeps stable pressure and area, and the problems of poor contact, transmission distortion or failure caused by long-term friction of a traditional conductive slip ring are effectively solved.

The invention relates to the field of circuit breakers, and particularly discloses a grounding circuit breaker, which comprises a box body structure, a fixing piece and a clamping piece, the use of the box body structure not only can limit the sliding of the fixing piece, but also can tighten the clamping piece, thereby clamping the electric wire and preventing the electric wire from falling off and inclining. The fixing piece is used to replace the original mode of fixing the wire by screws, so that the operation steps are simplified, the wire is more quickly and conveniently fixed, the wire is effectively prevented from sliding left and right, and the problems of unstable wire installation, wire loosening, poor contact and the like are avoided; the use of the clamping member not only can clamp the wire, improve the stability of the fixing member for fixing the line and prevent the wire from loosening, but also can wrap the wire, so that the wire cannot move left and right, the fixing member can accurately clamp the wire, and the reliability of the fixing member is improved.

The utility model relates to the field of connectors, and provides an assembling device for a connector. The assembling device for the connector comprises a base, wherein a buckle for fixing a cable is arranged on the base; the first rotating ring is movably connected to the base, and the first rotating ring is used for installing a fastening seat of the connector; the second rotating ring is connected to the base, and the second rotating ring is used for installing a crimping seat of the connector; the clamping ring is movably connected to the base and located between the first rotating ring and the second rotating ring, and the clamping ring is used for clamping a middle cylinder of the connector. According to the assembling device for the connector, the steps and time of manual operation are reduced, and the assembling efficiency is remarkably improved; the assembly error caused by the movement of the cable is avoided; torsion fracture of the cable itself is avoided; and the quality problems, such as poor contact and looseness, of the connector caused by improper assembly are reduced, so that the overall quality of the product is improved.

The application discloses a packaged contactor, which comprises a cover, a base, a moving contact assembly, a static contact assembly and a magnetic propulsion mechanism, the cover is arranged above the base and the joint surface of the cover and the base is sealed, the moving contact assembly, the static contact assembly and the magnetic propulsion mechanism are all arranged in the contactor, the moving contact assembly and the static contact assembly are arranged in a phase-to-phase insulation cover, the phase-to-phase insulation cover is fixed on the base, and the moving contact assembly and the static contact assembly are oppositely arranged; the magnetic propulsion mechanism comprises a moving iron core, a static iron core and a coil framework, the moving iron core is fixed on a moving iron core support, the moving iron core support is connected with the moving contact assembly, the static iron core is inserted into the coil framework, and the moving iron core moves towards the static iron core after the coil is electrified, thereby driving the moving contact assembly to move downwards. The application can solve the technical problems of abnormal sound and poor contact of the contactor caused by dust and foreign matters entering the contactor, and significantly prolong the service life of the contactor.

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 utility model belongs to the test technical field provides a kind of test tool for testing mechanical timer, it includes: test board, several positioning posts are arranged on it, positioning post is used to limit the timer to be detected relative test board movement;Guide mechanism is set on test board, guide mechanism includes several pins, pin can reciprocate along vertical direction, and movable contact in timer, for detecting the timing time of timer.Compared with prior art, the utility model has the advantages that by the cooperation design of adjusting part and fixed pressing plate, pin always stably contacts timer during testing, avoids misjudgment or missed detection caused by poor contact, ensures the accuracy and consistency of test result, improves the convenience of operation and test efficiency at the same time;Meanwhile, adjusting part can be flexibly adapted to different specifications of timer product, has good versatility and expansibility, suitable for batch detection of multiple models of mechanical timer.

The utility model discloses an automatic adjusting device for the extension length of an ultra-fine oilstone, which comprises an oilstone and a mounting seat used for being mounted on external bearing processing equipment, the mounting seat is provided with an adjusting groove along the height direction, the oilstone slides in the adjusting groove, and the initial end of the oilstone penetrates out of an opening at the tail end of the adjusting groove. A pressing plate used for pressing the tail end of the oilstone is arranged in the adjusting groove in a sliding mode, and the installation base is provided with a driving piece used for being in linkage fit with external hydraulic driving equipment so as to apply loads to the oilstone through the pressing plate and a guiding piece used for being in linkage fit with the driving piece so as to guide the loading position and direction of the loads. The pressing plate is provided with a detection piece used for detecting the contact degree of the starting end of the oilstone and an external bearing ring channel and a positioning piece used for guiding and positioning the sliding direction of the oilstone. The oilstone solves the problem of poor contact between the oilstone and a product to be machined due to the fact that the extension length of the traditional oilstone is not adjusted in time or the oilstone is abraded excessively during machining.

The utility model discloses a current collection device for a gravity type shuttle vehicle, which relates to the technical field of current collectors, and comprises a fixed seat, a linear bearing is connected to the outer surface of the fixed seat, a guide rod penetrates through the top of the linear bearing, a stop piece is connected to the top of the guide rod, and a rod seat is connected to the outer surface of the guide rod. The bottom of the pole seat is connected with a current collector seat through an insulating sleeve, and wheel shafts penetrate through the two sides of the current collector seat. According to the utility model, the structure mode of the current collector is changed, the original spring hard connection is changed into the mode of adapting to the height of the sliding contact line by the self-weight of the roller, and the roller ascends and descends through the matched guide of the linear bearing and the guide rod, so that the good contact between the current collector and the sliding contact line is realized, and the stable power supply of the shuttle vehicle is ensured; the device can better adapt to uneven slide wires; hard connection of an old direct-connection type current collector is changed, and the phenomena that the insulation sleeve is broken, the abrasion is serious, and the contact between the current collector and a sliding contact line is poor due to large stress of the current collector are avoided.

The utility model relates to a kind of connector of firm connection, including glue seat, terminal and the gland for locking, glue seat is equipped with slot, the spacing slot in slot is arranged for the limiting slot for installing terminal, the front end of glue seat is equipped with fixed seat, the both sides of fixed seat are symmetrically provided with guide rod, and the position of guide rod is equipped with guide hole on glue seat;Fixed seat is provided with buckle, and the position of buckle is equipped with clamping groove on glue seat;Fixed seat is equipped with corresponding avoiding slot with slot;The both sides of avoiding slot are equipped with sliding slot, and the sliding plate is slidably arranged in sliding slot, and the sliding plate is locked with fixed seat by screw, and secondary fixed structure is formed by setting fixed seat and sliding plate, on the basis that gland initially locks FPC, FPC is locked by screw using sliding plate, form double locking mechanism, avoid displacement or slackening of FPC in slot, ensure that terminal and FPC are always stable contact, reduce the risk of signal transmission interruption, contact failure.

The utility model relates to the technical field of power equipment, and provides a piercing connection junction box, which comprises a shell, the shell comprises a lower cover and an upper cover, the lower cover is clamped with the upper cover, the lower cover is used for placing a terminal wire to be connected, at least one elastic sheet is arranged in the upper cover, and the elastic sheet is clamped with the lower cover. And the elastic sheet is used for puncturing the wire skin and the wire core of the terminal wire to achieve a power-on function. According to the utility model, the elastic sheet arranged in the upper cover is utilized to automatically pierce the wire skin of the terminal wire to directly reach the wire core to realize electrical connection when the upper cover and the lower cover are closed, so that the wire does not need to be stripped in advance, and the traditional wiring steps are simplified. According to the design, the wiring efficiency is greatly improved, professional tools and skills are not needed in operation, the labor and time cost is reduced, the risk of poor contact or open circuit caused by improper manual wire stripping is avoided, and the safety and reliability of wiring are remarkably improved. Therefore, a user can complete wiring work more quickly and safely.

The utility model discloses a gateway based on operation and maintenance adaptation, and the gateway comprises a gateway assembly which comprises a machine body; the protection assembly comprises a fixing rod, a clamping groove, a sliding block, a connecting frame and a baffle; the fixing rods are fixed to the two sides of the machine body, the clamping grooves are formed in the top and bottom ends of the fixing rods, the sliding blocks are slidably connected between the fixing rods and the clamping grooves, the connecting frame is fixed between the outer side ends of the sliding blocks, and the baffle is hinged to one side of the connecting frame. Through the arrangement of the protection assembly, during use, the connecting frame is pushed to drive the baffle to move towards the front side of the machine body, the baffle is gradually changed into a vertical state due to the fact that the baffle is connected with the connecting frame in a hinged mode, the baffle is located on the outer side of the front side of the machine body, and the baffle is promoted to shield the connecting plate on the front side of the machine body; the baffle plate separates the connecting end of the machine body from the external environment, so that impurities in the external environment are prevented from entering the connecting end, the impurities are prevented from influencing the connecting effect of external connecting wires, and poor contact of the connecting wires is prevented.

The present application relates to the technical field of lead frame conveying, and particularly relates to a conveying structure in a lead frame processing process. The conveying structure comprises a mounting frame, one side of the mounting frame is rotationally connected with a transmission shaft, the transmission shaft is fixedly connected with two driving wheels which are symmetrically distributed, the other side of the mounting frame is rotationally connected with two driven wheels which are symmetrically distributed, the driving wheels and the driven wheels on the same side are jointly provided with a synchronous belt, and the mounting frame is provided with a regulating mechanism. The regulating mechanism comprises a positioning wheel, a supporting wheel, an adjusting wheel and a sliding block. The synchronous belt is divided into two parts by the two adjusting wheels, the position of the synchronous belt part is kept in a stationary state without affecting the conveying of the lead frame on the synchronous belt, the lead frame is placed on the synchronous belt by a taking and placing mechanism, interference between the movement of the synchronous belt and the taking and placing mechanism is avoided, collision between the lead frame and the synchronous belt is avoided, and the probability of deformation, poor contact and even fracture of the lead pin of the lead frame is reduced.

The application discloses a ship segment structure welding reverse deformation tooling and relates to the technical field of ship structure welding, which comprises a supporting seat, and a stabilizing plate is threadedly connected to the top of the supporting seat. The application remarkably improves the adaptability and stability of clamping through the spherical surface self-adapting structure and angle locking design of the positioning and clamping mechanism. The positioning and clamping mechanism adopts a spherical pair connection formed by a movable ball and a movable sleeve, so that the arc-shaped clamping plate can automatically adjust the posture according to the actual inclination angle of the segment end face, the clamping plate is ensured to be completely attached to the end face, and stress concentration or unstable clamping caused by poor contact of the traditional rigid clamping is avoided. Meanwhile, the movable ball surface can be tightly pressed by the fixed threaded column, the relative position of the spherical pair can be reliably locked after the angle is adjusted, the clamping angle change caused by vibration during welding is effectively prevented, the continuous and stable application of the clamping force is ensured, and therefore the precision and reliability of the reverse deformation control are improved.

The invention discloses a static contact assembly and an isolating switch, and relates to the field of electrical equipment. The static contact assembly comprises a supporting piece, a first static contact piece and a second static contact piece, the first static contact piece and the second static contact piece are arranged on the supporting piece in a mutually spaced mode, and a clamping space used for clamping the movable contact piece is formed between the first static contact piece and the second static contact piece. The static contact assembly comprises the first static contact piece and the second static contact piece which are arranged at an interval, so that the static contact assembly can clamp the moving contact piece through the first static contact piece and the second static contact piece to ensure that the static contact assembly and the moving contact piece have a better contact effect and are not easily interfered by vibration and the like; and the problem of poor contact easily occurring in the prior art is improved. The disconnecting switch comprises the moving contact and the static contact assembly, and therefore the disconnecting switch has the advantage of being good in contact effect.

The utility model discloses a wire harness clip used for fixing an integrated AMT wire harness, comprising a fixing plate, one end of the fixing plate is provided with an arc-shaped wire harness fixing cylinder, one side of the arc-shaped wire harness fixing cylinder is opened and is provided with a connecting plate, and the connecting plate and the fixing plate form an acute angle; the top of the arc-shaped wire harness fixing cylinder and the connecting plate are jointly provided with a rectangular hole, and an elastic piece is arranged in the rectangular hole. By arranging the arc-shaped wire harness fixing cylinder on the fixing plate, the wire harness is fixed in the arc-shaped wire harness fixing cylinder, wire harness shaking caused by bumping of a vehicle is reduced, by arranging the elastic sheet, the wire harness can enter the arc-shaped wire harness fixing cylinder conveniently, secondary fastening is conducted on the wire harness, poor contact or disengagement of a sensor is avoided, and the reliability of the sensor is improved. The technical problem that in the prior art, an integrated wire harness connector is prone to loosening and poor contact under the working condition of long-time vibration is solved.

The utility model discloses a quick installation cable explosion-proof joint, which relates to the technical field of power transmission and transformation, and comprises an explosion-proof shell, an insulating rubber body, a conductive cylinder, two plugging cylinders, two stress cones, two check rings, two tail pipes, two screw caps and two cables to be connected, the conductive cylinder is fixed in the insulating rubber body, the two plugging cylinders are symmetrically inserted in the conductive cylinder, the two stress cones are also symmetrically inserted in the insulating rubber body and are located on the two sides of the conductive cylinder, and the end parts of the two stress cones are fixedly connected with check rings. By adopting the structures of the plugging cylinder, the watchband contact finger, the conductive cylinder and the like, the cable joint provides a brand-new cable joint installation mode. According to the installation mode, operation is simple and rapid, the installation time is greatly shortened, good contact between the plugging cylinder and the conductive cylinder is ensured through the design of the watchband contact fingers, and the problem of poor contact is effectively avoided.

The utility model relates to the technical field of interfaces, in particular to a hardware interface board, which comprises a main body, a USB (universal serial bus) connector fixedly mounted on the back of the main body, an insertion groove formed in the front of the main body, a hard disk connector fixedly mounted in the insertion groove, mounting blocks fixedly mounted on the upper surface and the lower surface of the main body, and telescopic cavities formed in the mounting blocks. And penetrating grooves are formed in the inner walls of the telescopic cavities and communicate with the interiors of the inserting grooves. When the hardware interface board is used, firstly, the interface board is connected to a USB port of a computer through a USB connector, then a rotary knob is rotated, a lead screw is driven to move, and a connecting plate is driven to slide in a connecting groove, so that the position of a fixing plate is adjusted, the device can be clamped on a case through the movement of the two fixing plates, and the device is convenient to fix; and the positions of the two fixing plates can be adjusted through two rotary knobs respectively, so that the device can adapt to cases in different shapes conveniently, and the adaptability of the device is improved.

The utility model belongs to the technical field of test wire harnesses, particularly relates to an EOL test wire harness for monitoring contact temperature rise by test equipment, and aims to solve the problem that the temperature rise process is difficult to monitor in the test process of the EOL test wire harness provided by the background technology, and provides the following scheme: the EOL test wire harness comprises a connector frame body, one side of the inner wall of the connector frame body is fixedly connected with electrode plates which are symmetrically distributed, and the other side of the inner wall of the connector frame body is fixedly connected with a cable. According to the EOL test wire harness, the two layers of inner sheaths and the threaded pipe are additionally arranged outside the cable, so that the abrasion of the wire harness in the back-and-forth test process is reduced, the strength of the wire harness is improved, the service life of the EOL test wire harness is prolonged, and in a temperature rise monitoring mechanism, once the problem of poor contact occurs in the test process, the EOL test wire harness cannot be damaged. When a fire occurs, high temperature is generated near the first wiring terminal and the second wiring terminal and is sensed by the thermistor, so that the temperature change can be monitored in real time, the effect of timely early warning is achieved, and the possibility of fire occurrence is reduced.

The utility model relates to the technical field of circuit switches, in particular to a bypass change-over switch with stable switching, which comprises a box body, a rotating rod rotationally mounted on the inner wall of the box body, an insulating sleeve fixedly mounted on the outer side of the rotating rod, a lug plate fixedly mounted on one side of the insulating sleeve, and a touch plate fixedly mounted on the side surface of an insulating mounting plate, and a mistaken touch prevention assembly is arranged in the box body. The utility model has the beneficial effects that the transmission structure with the vertical groove and the square block is arranged, and the fixing ring with the plurality of limiting grooves is combined, so that the operating grip has clear three-section operation logic of lifting, rotating and pressing and a clear gear sense during switching, and during operation, the grip needs to be lifted firstly to enable the convex block to be separated from the limiting grooves, so that the grip can rotate, and the operation is convenient. And the grip is released after the rotation is in place, so that poor contact caused by blind operation or rotation by feeling is avoided, mistaken switching caused by accidental touch or vibration is also prevented, and long-term stability of circuit connection and power utilization safety after switching are ensured.

The present invention relates to the technical field of electronic couplers, and specifically to a coupler connector with stable connection, comprising a coupler 1, wherein a coupler 2 is provided on the right side of the coupler 1; and a connecting mechanism for connecting the coupler 1 and the coupler 2, wherein the connecting mechanism comprises an electric contact disc 1 fixedly installed inside the left end of the coupler 2. In the present invention, when the coupler 1 approaches the coupler 2, it will also drive the elastic pressure strip to move synchronously. When the electric contact disc 1 has not yet contacted the electric contact disc 2, the elastic pressure strip will squeeze the pressure plate, and the pressure plate will drive the connecting rod 1 to slide inside the coupler 2, compressing the spring 2 and the air bag. The gas in the air bag is ejected from the nozzle hole, so that the dust on the side where the electric contact disc 1 and the electric contact disc 2 are close to each other can be cleaned in advance. The dust that falls after cleaning will fall from the opening at the lower end of the limit ring, thereby ensuring the stability of the electric contact disc 1 and the electric contact disc 2 during conductive contact, and avoiding the situation where the dust causes poor contact.