132results about How to "Guaranteed connection reliability" patented technology

The utility model discloses an anti-retreating terminal assembly, which comprises a shell and a terminal inserted in the shell, the terminal is inserted in a slot built in the shell, the inner wall of the shell is provided with a limiting groove communicated with the slot, a limiting elastic sheet is inserted in the limiting groove, and the limiting elastic sheet is inserted in the limiting groove. The limiting elastic sheet is provided with a first elastic fin which obliquely extends towards the slot, the front end of the first elastic fin is bent to form a first bent part, the terminal is provided with a bayonet, when the terminal is inserted into the slot, the first bent part is clamped in the bayonet, and the first bent part is clamped in the bayonet. Therefore, the resistance for preventing the terminal from returning is formed on the terminal. According to the scheme, the first elastic fins extending inwards in the inclined mode through the limiting elastic pieces are clamped with the terminals after the terminals are inserted, component force perpendicular to the insertion direction of the terminals is generated on the terminals, then the positions of the terminals are limited, the purpose of preventing the terminals from retreating to generate position deviation is achieved, and then the connection reliability of the terminals in the using process is guaranteed.

The invention provides a large-span steel corridor structure high-precision assembling method, and belongs to the technical field of building construction, and the method comprises the step of constructing an accurate and reliable structure assembling technical system through deep fusion of a building information model and a three-dimensional space coordinate system. According to the method, a laser positioning instrument and a multi-stage torque sensor are introduced for the first time, and accurate positioning of the steel member and fine control of bolt torque are achieved. From a pre-assembly site, component installation is conducted layer by layer through an axis control net and an angular point control net, and a staged bolt fastening strategy is adopted and comprises initial tightening torque control, semi-tightening torque control and final tightening torque control. In the assembling process, finite element analysis software is used for conducting multiple times of structure checking calculation, the space position error and the structure stability are strictly monitored, and the geometric accuracy, the connection reliability and the overall performance of the large-span steel corridor structure are ensured. According to the method, the problem that large accumulative errors are inevitably caused by the fact that manual measurement and mechanical limiting modes are generally adopted for positioning and connection at present is solved.

The utility model discloses a data acquisition instrument based on cellular communication, and belongs to the technical field of data acquisition instruments, the data acquisition instrument comprises an acquisition instrument body, one side of the acquisition instrument body is provided with a plurality of interfaces, the acquisition instrument body is provided with a protection cover, and one side of the protection cover is open; a check curtain is installed in the protective cover, a cover plate is installed at an opening of the protective cover, a sealing piece is arranged on the cover plate, and the cover plate is detachably connected with the check curtain. According to the utility model, the protective cover and the check curtain can shield an unwired interface, thereby effectively preventing dust, rainwater and other impurities from falling into the unwired interface, preventing the unwired interface from poor contact in the subsequent wiring process, improving the reliability of line connection and the stability of data transmission, and improving the reliability of data transmission. The potential safety hazard of wiring short circuit of the interface is reduced; dustproof and waterproof protection can be achieved for the interface through the cover plate and the sealing piece, safety during connection of an external connector and the interface is guaranteed, accuracy during data transmission is guaranteed, and use is reliable.

The invention discloses a portable energy storage device and an energy storage system.The portable energy storage device comprises a shell assembly, an energy storage module, a connecting base and a connecting piece, the shell assembly comprises a bottom shell and a top shell which are arranged in a split mode in the first preset direction, and in the first preset direction, the height of the bottom shell is larger than that of the top shell; a connecting protrusion is arranged on the inner side wall face of the bottom shell in a protruding mode, the connecting protrusion is provided with a containing cavity and an opening communicated with the containing cavity, the energy storage module is arranged in the bottom shell and comprises an energy storage unit and a fixing piece wrapping the periphery of the energy storage unit, the energy storage unit is fixed in the bottom shell through the fixing piece, the fixing piece is provided with a fixing part, and the fixing part is arranged in the bottom shell. The fixing part is provided with a first through hole penetrating in the first preset direction, the structural strength of the connecting base is different from that of the connecting protrusion, the connecting base is embedded into the containing cavity from the opening, and the connecting piece penetrates through the first through hole from top to bottom in the first preset direction and is connected with the connecting base.

The invention provides a high-shielding type intelligent automobile Ethernet connector, and belongs to the technical field of connecting devices.The high-shielding type intelligent automobile Ethernet connector comprises a connecting base, a connecting plug and a sleeve shielding assembly, and butt joint of the connecting plug and the connecting base is locked through a buckle assembly; the sleeve shielding assembly comprises a first shielding block, a first shielding cylinder, a second shielding cylinder, a second shielding block, a first spring, a clamping block and a hook-shaped clamping groove, one end of the second shielding cylinder extends into the first shielding cylinder, the first shielding block is fixedly connected to the inner wall of the first shielding cylinder, and one end of the first shielding block abuts against the first spring; the other end of the first spring abuts against the end portion, extending into the first shielding cylinder, of the second shielding cylinder, and rebounding of the first spring enables the clamping block to be clamped into the locking portion of the hook-shaped clamping groove to complete butt joint of the first shielding cylinder and the second shielding cylinder. By using the device, the problems that when a traditional connector is connected with a socket, gaps exist, electromagnetic interference is caused, and signal transmission is affected are solved.

The invention discloses a hinge assembly, a mechanical joint and a robot. A plurality of structural members of the hinge assembly comprise a first structural member, a second structural member and a third structural member. The plurality of bearings of the hinge assembly includes a first bearing and a second bearing. In the axial direction, the bearing seat of the second structural part is located between the bearing seat of the first structural part and the third structural part, the first bearing ring is located between the first bearing and the second bearing, and the two end faces of the first bearing ring abut against the inner ring of the first bearing and the inner ring of the second bearing correspondingly. The second bearing ring is located between the second bearing and the third structural part, and the two end faces of the second bearing ring abut against the inner ring of the second bearing and the third structural part correspondingly. The hinge assembly further comprises a fastening assembly, and the fastening assembly fastens the inner ring of the first bearing, the first bearing ring, the inner ring of the second bearing, the second bearing ring and the third structural part together in the axial direction. Therefore, linkage of the third structural part, the inner ring of the first bearing and the inner ring of the second bearing can be achieved.

The utility model relates to the technical field of automobile charging connectors, in particular to a charging socket capable of being conveniently assembled, and solves the problem that a terminal of a charging socket in the prior art cannot be conveniently assembled. Which comprises a main shell connected with a PCB (printed circuit board), and is characterized in that the PCB is provided with signal elastic contacts, the main shell is provided with signal terminals, the end parts of the signal terminals are in contact with the signal elastic contacts, and the end parts of the signal terminals are provided with protective structures matched with the signal elastic contacts. The beneficial effects are that when the signal terminal is connected with the signal elastic contact, the signal terminal contact surface presses the signal elastic contact to realize connection, and the protection groove completely wraps the signal elastic contact to play a role in protecting the signal elastic contact. In the assembling process of the charging socket, the metal terminal and the PCB are in contact connection in a radial compression mode, signal transmission between the metal terminal and the PCB is achieved, the requirement for the installation precision of the metal terminal is low, and the assembling efficiency of the charging socket can be improved.

The invention discloses a butt welding connection structure of a steel-plastic composite pipe and a connection method of the butt welding connection structure, relates to the technical field of composite pipe butt joint structures, and is mainly used for solving the problem that leakage risks exist in common steel-plastic composite pipe connection modes. According to the main structure, adjacent outer-layer steel pipes are connected in a butt welding mode through radial flaring sections which are arranged at the ends of the outer-layer steel pipes and are of an integrated structure with the outer-layer steel pipes; the end parts of the adjacent inner-layer plastic pipes are connected, a filler cavity is formed between the end parts of the adjacent inner-layer plastic pipes and the radial flaring sections which are in butt welding connection, and threaded holes communicated with the filler cavity are formed in the radial flaring sections. The invention provides a butt welding connection structure of a steel-plastic composite pipe and a connection method of the butt welding connection structure, which can ensure the loading capacity and the connection reliability of a connection part while completely preventing a medium in an inner-layer plastic pipe from being in contact with an outer-layer steel pipe, and increase the applicable working condition range of the product while avoiding the leakage of the medium.

The invention discloses a quick-install assembly of a tool assembly for a lawn aerator, the main points of which are: comprising a hanging foot fixing seat, a pressing seat and a locking device; one end of the pressing seat is rotatably connected and arranged on the hanging foot fixing seat, the pressing seat can be rotated to open or close, and when closed, the other end forms a limited fixed connection with the hanging foot fixing seat through the locking device; the left end of the tool assembly is rotatably arranged in the hanging foot fixing seat and the pressing seat, and the left end of the tool assembly is detachably arranged in the hanging foot fixing seat and the pressing seat. The quick-install assembly of the tool assembly for a lawn aerator of the invention has a simple structure and is easy to operate. The pressing seat can be opened or closed by one hand, which saves time and effort.

The utility model relates to a pressure measuring diaphragm capsule protecting and cleaning device which comprises a top cover and a base, clamping grooves are formed in the bottom of the top cover at equal intervals, clamping strips are fixedly connected to the top of the base at equal intervals, the clamping strips are used in cooperation with the clamping grooves, and the base is located on the outer side of a measuring diaphragm capsule. The device has the beneficial effects that a disposable film can be quickly fixed above the measuring diaphragm capsule, the influence of the external environment on the measuring diaphragm capsule is reduced, and the risk that the measuring diaphragm capsule is damaged or the measuring precision is reduced due to factors such as accidental collision or dust is reduced.

The application relates to a gear expansion sleeve structure for coaxially fastening a gear on a connecting shaft, which comprises an inner pressure expansion sleeve, an outer pressure expansion sleeve and adjusting screws, the inner pressure expansion sleeve is axially symmetrically sleeved on the outer surface of the connecting shaft, the inner surface of the inner pressure expansion sleeve is gradually abutted against the outer surface of the connecting shaft; the outer pressure expansion sleeve is axially symmetrically sleeved on the inner diameter of the gear, and the end portion is abutted against the end surface of the gear, the outer surface of the outer pressure expansion sleeve is gradually abutted against the inner surface of the inner pressure expansion sleeve; the adjusting screws are provided with a plurality of end portions penetrating through the inner pressure expansion sleeve and the outer pressure expansion sleeve, and the inner pressure expansion sleeve is axially moved by being extruded through the axial movement of the adjusting screws, and is abutted against the inner surface of the outer pressure expansion sleeve and the outer surface of the connecting shaft, and the outer surface of the outer pressure expansion sleeve is extruded to the inner surface of the gear. The application realizes the stability between the gear and the connecting shaft, makes the component combination force more reasonable, and ensures the stability of the overall structure.

The utility model provides a suspension control arm, a suspension system and a vehicle. The suspension control arm comprises a control arm body, an elastic buffer mechanism is arranged on the control arm body, the elastic buffer mechanism can abut against a vehicle body under wheel jump excitation, and the elastic buffer mechanism comprises a base and an elastic buffer block arranged on the base; the elastic buffering mechanism is fixed to the control arm body through a base and abuts against a vehicle body through an elastic buffering block. According to the suspension control arm, the elastic buffering mechanism composed of the base and the elastic buffering block is arranged on the control arm body, the suspension control arm abuts against a vehicle body through the elastic buffering mechanism under wheel jump excitation, the overlarge wheel jump stroke can be limited, large wheel jump can be avoided, and the service life of the suspension control arm is prolonged. And the driving comfort of the vehicle can be improved.

The utility model belongs to building construction technical field especially for a kind of replaceable building pipeline pre-burying positioning slot structure, including strip board, support adjusting component, sliding seat, transverse position adjusting component, two slot positioning frames, two hollow shafts, open-close adjusting component and quick-release fixing component;The support adjusting component is set on strip board and is close to the position of both ends, the sliding seat is slidably installed on strip board, the transverse position adjusting component is set on the top side of strip board and is connected with sliding seat.The utility model design is reasonable, easy to operate, can realize the quick adjustment and accurate fixing of pipeline pre-burying positioning, can flexibly adjust the space position of slot positioning frame according to actual construction demand simultaneously, greatly improves construction efficiency, and using the mode of modular design makes each component can be replaced and maintained separately, reduces use cost, especially suitable for the complex building scene needing frequent adjustment pipeline direction.

This invention discloses a car roof rack assembly fixture, comprising: a connecting assembly; a pair of clamping assemblies respectively connected to both ends of the connecting assembly for positioning and clamping the corresponding roof rack; a clamping mechanism connected to the connecting assembly; and an adsorption assembly configured to adsorb onto the glass roof, and applying force to the connecting assembly through the clamping mechanism to press the roof rack clamped by the pair of clamping assemblies firmly against the surface of the glass roof. This car roof rack assembly fixture of the present invention can achieve precise assembly and positioning of the roof rack and glass roof, ensuring the consistency of the final product's appearance and the reliability of the connection, thereby improving production efficiency and product quality. The present invention also discloses a method for assembling a car roof rack and a glass roof.

The utility model relates to the technical field of vehicles, in particular to a rear auxiliary frame assembly and a vehicle, and aims to solve the problem that an existing rear auxiliary frame assembly cannot meet the requirements for strength and light weight at the same time. In order to achieve the purpose, the rear auxiliary frame assembly comprises a first longitudinal beam, a second longitudinal beam, a first cross beam and a second cross beam, the first longitudinal beam and the second longitudinal beam are oppositely arranged; the first cross beam and the second cross beam are respectively arranged between the first longitudinal beam and the second longitudinal beam; the height direction of the first beam and the height direction of the second beam are not parallel to each other. Through the structural arrangement, the load transmission direction when the longitudinal beam transmits the load to the cross beam is changed, and then the force transmission angle between the longitudinal beam and the cross beam is changed, so that the load applied to the longitudinal beam can be smoothly transmitted to the cross beam, and the strength and the bearing capacity of the rear auxiliary frame assembly are greatly improved; therefore, a reinforcing plate in an original rear auxiliary frame assembly can be omitted, and light weight of a vehicle is facilitated.

The utility model relates to anti -static jumper wire installation technical field, especially anti -static jumper wire quick installation equipment, including installation pincers, including two tongs, the tong head of setting in the tong one end, and the tong mouth of opening in the tong head top, jumper wire, including female buckle gasket and sub buckle gasket, the connecting piece of fixed connection in the one side of sub buckle gasket, the fixed sheet of fixed connection in the other side of sub buckle gasket, the wire of connection in the fixed sheet one side, the utility model discloses a special installation pincers is set, and the special shape of the tong mouth in installation pincers makes it can quickly suit the female buckle gasket, sub buckle gasket and the outside of bolt, through female buckle gasket and sub buckle gasket can pre -separate and stick bolt, and cooperate tong mouth primary fixation can be completed in one operation, changes the cumbersome process that traditional method can need to operate bolt or use additional tool one by one, through jumper wire tightly wraps bolt, guarantees the reliability of connection and the conduction performance.

This invention discloses a double-row pile retaining structure for foundation pits and its construction method, aiming to provide a double-row pile retaining structure for foundation pits with good deformation control, strong resistance to earth pressure, and high stability. A double-row pile retaining structure for foundation pits includes: a front row of piles, which are set in the soil; a front row of pile capping beam, with the top of the front row of piles connected to the front row of pile capping beam; a rear row of piles, which are set in the soil, with the front row of piles located between the rear row of piles and the foundation pit; a rear row of pile capping beam, with the top of the rear row of piles connected to the rear row of pile capping beam; a tie beam, connecting the front row of pile capping beam and the rear row of pile capping beam; and lapped steel sections, which are inserted into the soil, the lapped steel sections are inclined, the lower end of the lapped steel sections is connected to the rear row of piles, and the upper end of the lapped steel sections is connected to the tie beam or the front row of pile capping beam.

This invention discloses a multi-branch battery pack high-voltage system and its control method. The multi-branch battery pack high-voltage system includes: multiple battery pack branches, a charging control module, and a discharging control module. Each battery pack branch includes a battery pack, a battery drain interrupter (BDU), and a bidirectional DC-DC converter module. The battery pack is connected to the input terminal of the BDU. The BDU has a main circuit and an equalization circuit. The main circuit controls the on / off of the main power of the battery pack branch it belongs to. The BDUs of each battery pack branch are connected to each other through the equalization circuit for active equalization between branches. The output terminal of the BDU is connected to the input terminal of the bidirectional DC-DC converter module, which controls the charging and discharging current of its respective battery pack branch. The output terminals of all bidirectional DC-DC converter modules are connected in parallel and then connected to the charging control module and the discharging control module. This invention can solve the circulating current problem between battery packs and improve the stability of the multi-branch battery pack high-voltage system.

The utility model belongs to the technical field of chemical engineering and ferrous metallurgy, and provides an automatic opening and closing heat preservation cover device which comprises a pair of cover bodies, pull rods are arranged on the side faces of the cover bodies, driving cylinders hinged to the pull rods are arranged on the side faces of the pull rods, the pull rods are connected with the cover bodies through hinge shafts and buffer type hinges, and the buffer type hinges comprise hinge heads. The side face of the hinge head is connected with the cover body through a welding plate, a hinge opening connected with the head end of the pull rod is formed in one end of the hinge head, a buffer cavity is formed in the other end of the hinge head, a buffer plate and a spring are arranged in the buffer cavity, and two pairs of contact pieces are arranged on the side, opposite to the spring, of the buffer plate. The contact piece is movably matched with a sliding way arranged in the hinge head, one end of the contact piece faces the hinge shaft, and the cover body comprises an outer cover plate and a wall sleeve plate which is concentrically connected with the inner cover plate and the outer cover plate in a nested mode. The device is reasonable in design, simple in structure, good in heat preservation performance, favorable for reducing energy consumption, good in environmental protection effect, high in connection reliability and suitable for large-scale popularization.

The utility model relates to the technical field of display lamp panels, and discloses a digital display lamp panel which comprises a lamp panel body, a display mechanism is arranged at the front end of the lamp panel body, the lamp panel body comprises a lamp panel body, and mounting holes are formed between the front side wall and the rear side wall of the four corners of the lamp panel body. Four threaded holes are formed in one side of the front end of the lamp panel body in a rectangular array shape, and a contact type socket is arranged at the front end of the lamp panel body and located among the four threaded holes. Effective electromagnetic shielding measures are adopted, namely, the anti-interference display driving board is arranged at the rear end of the lamp panel, and the metal shielding cover is arranged outside the display driving board and the data transmission mainboard, so that the lamp panel is isolated from an external electromagnetic interference source, meanwhile, the circuit layout of the lamp panel is optimized, internal electromagnetic interference is reduced, and the service life of the lamp panel is prolonged. And anti-interference elements, namely a filter capacitor and a filter inductor, are added in the driving circuit, so that the anti-electromagnetic interference capability of the lamp panel is improved.

The utility model provides a detachable cycling garment which comprises an upper garment body and a lower trouser body which can be separated from each other, the bottom of the upper garment body extends downwards to form an outer-layer elastic waist tube, and the inner wall of the outer-layer elastic waist tube is provided with a buckling groove body. The top of the lower body extends upwards to form an inner-layer elastic waist opening which can be covered by the outer-layer elastic waist cylinder, and the outer wall of the inner-layer elastic waist opening is provided with a buckling strip body which can be clamped and matched with the buckling groove body; the buckle strip body and the buckle groove body are both magnetic, the buckle strip body is provided with a first limiting part and a second limiting part which are perpendicular to each other, the buckle groove body is provided with a first protruding part and a second protruding part, and the first protruding part and the second protruding part are arranged on the groove bottom wall and the groove side wall which are perpendicular to each other on the buckle groove body respectively; when the buckle strip body is clamped and matched with the buckle groove body, the first limiting part abuts against the first protruding part, and the second limiting part abuts against the second protruding part. The utility model solves the problems that the one-piece riding clothes are inconvenient to wear and take off, and the aerodynamic performance is influenced by the split scheme.

This utility model discloses a composite aluminum panel, including a wall. An aluminum panel body is provided on one side of the wall, and a groove is formed on one side surface of the aluminum panel body. A connecting plate is provided on one side of the aluminum panel body, and a reinforcing plate is fixedly installed on one side surface of the connecting plate. In this utility model, by pulling the connecting block on the limiting rod, it moves along the through groove of the connecting cylinder, causing the telescopic rod to move synchronously and compress the outer spring. When the end of the limiting rod disengages from the mounting base, the insert of the connecting plate can be inserted into the wall mounting base. After releasing the connecting block, the spring rebounds, pushing the limiting rod to automatically pass through the insert and engage with the limiting hole of the mounting base, completing a quick locking installation. For disassembly, pulling the connecting block causes the limiting rod to exit the limiting hole, separating the insert from the mounting base, achieving efficient disassembly. This structure utilizes the elastic restoring characteristics of the spring, simplifying the assembly and disassembly process and significantly improving the convenience of maintenance operations while ensuring connection reliability.

The utility model discloses an engine shock -proof connecting support, it relates to vehicle power equipment installation damping field, and the bottom both ends of power source are provided with front connecting piece and rear connecting piece respectively, and are fixedly connected through the power source connecting piece of positioning screw and shock -proof connecting support main part front and rear both ends, the rear of power source connecting piece is provided with buffer sleeve, and the left and right sides in buffer sleeve are equipped with buffer cover, and two reinforcing cross bars are arranged on the carrier support, two reinforcing cross bars all are equipped with two locating rods, and locating rod is provided with locating hole no.

The utility model discloses an edge protection movable handrail in the field of steel structure buildings, which comprises stand columns arranged at intervals, a plurality of steel wire ropes horizontally connected between the stand columns, conical heads arranged at the bottoms of the stand columns, nuts fixed at the inner bottoms of the conical heads and matched with the upper ends of expansion bolts, and long hexagonal sleeves sleeved outside the middle sections of the expansion bolts. The long hexagonal sleeve is connected with the expansion bolt through a pin, the outer wall of the expansion bolt is provided with a longitudinal sliding groove matched with the inner end of the pin, and the lower end of the expansion bolt is connected with the ground. The edge protection movable handrail has the advantages of being fast to disassemble and assemble, time-saving, labor-saving, convenient to transport and store, high in repeated utilization rate and the like.

The utility model discloses a kind of light steel structure reinforcing devices for railway locomotive, it is related to steel structure technical field.The utility model includes fixed assembly, connecting assembly being installed on fixed assembly and crossbeam being installed on connecting assembly, fixed assembly includes the fixed frame with trapezoidal limit slot and first limit piece, connecting assembly includes the connecting frame with trapezoidal lug, second limit part and guide pillar, crossbeam is slidably matched with the crossbeam guide slot on connecting frame by guide block.The utility model realizes quick positioning by the cooperation of trapezoidal groove and lug, completes automatic locking using spring pressing effect, realizes mechanical self-locking by the linkage of guide pillar and cross rotating piece, effectively prevent vibration loosening, simultaneously, quick disassembly is realized by the movement of T-shaped slider in L-shaped limit sliding groove, ensure the reliability of connection, and improve installation and maintenance efficiency.

The invention relates to the technical field of photovoltaic supports, in particular to a sloping roof photovoltaic support and a construction method thereof, and the photovoltaic support comprises a plurality of back pull assemblies, a plurality of ground beam assemblies and a plurality of photovoltaic mounting base assemblies. The back pull assembly comprises a rear wall inclined strut, a rear wall transverse strut and a back pull, one end of the rear wall inclined strut is arranged on the rear wall of the house, the other end of the rear wall inclined strut is arranged on the back pull, one end of the rear wall transverse strut is arranged on the rear wall of the house, and the other end of the rear wall transverse strut is arranged on the back pull; the ground beam assembly comprises a front wall inclined strut, a front wall transverse strut and a ground beam, one end of the front wall inclined strut is arranged on the front wall of the house, the other end of the front wall inclined strut is arranged on the ground beam, and one end of the front wall transverse strut is arranged on the front wall of the house. After being installed, the support is not connected with the roof, and an original waterproof layer or waterproof tiles of the roof are prevented from being damaged; by arranging the positioning assembly, positioning installation of the back pull and the ground beam is conveniently achieved, and the construction efficiency is improved.

This utility model provides an LED display module mask, including a mask body, which comprises two sets of first mask plates and a second mask plate. The second mask plate is located between the two sets of first mask plates, and multiple sets of connecting ribs are provided between the second mask plate and the two sets of first mask plates. The second mask plate is integrally formed with the two sets of first mask plates through the multiple sets of connecting ribs. Multiple sets of lamp holes are provided on the first mask plate, the second mask plate, and the connecting ribs. Multiple sets of buckles are provided on the top surface of the connecting ribs. This LED display module mask has a reasonable structural design, which can effectively protect the LED module. Its integrated mask body can resist the intrusion of external impurities, the lamp holes ensure the orderly arrangement of LED beads to optimize the display effect, and the buckles on the connecting ribs facilitate a secure connection with other components. In addition, the mask's good heat dissipation design can dissipate heat in time, ensuring the stable operation of the LED module and greatly improving the practicality and reliability of the product.

The utility model provides a guide rail type monopole bus junction box, which comprises a junction box shell, a line bank and a cover plate, one side of the junction box shell is provided with a wedge-shaped clamping strip, the other side of the junction box shell is provided with a wedge-shaped clamping groove, one side of the wedge-shaped clamping strip is provided with a limiting convex point, one side of the wedge-shaped clamping groove is provided with a limiting groove, and the other side of the wedge-shaped clamping groove is provided with a limiting convex point. A mounting cavity is formed in the junction box shell, the line bank is mounted in the mounting cavity, the line bank comprises a first wiring part and a second wiring part, one end of the cover plate is rotationally connected with one side of the top of the junction box shell, a first abutting plate is arranged on the surface of the bottom end of the cover plate, and a second abutting plate is arranged on one side of the first abutting plate. According to the utility model, a plurality of junction boxes can be conveniently fixed, so that the junction boxes are more stable and reliable after being installed, the wiring blocks are prevented from shaking, and the problem of lead loosening caused by shaking is avoided.

The utility model relates to a battery monomer, battery and electric device, including the shell and be provided the electrode subassembly in the shell, the shell is provided with the liquid injection structure, the liquid injection structure includes liquid injection hole, plugging piece and elastic piece, liquid injection hole is provided in the shell; the plugging piece is arranged in the shell and is used for sealing and opening the liquid injection hole; the elastic piece is arranged in the shell and connected to the inner wall of the shell and the plugging piece, and the elastic piece is used for applying elastic force close to the liquid injection hole to the plugging piece; when the external pressure borne by the single battery is greater than a first set value, the plugging piece is far away from the liquid injection hole under the action of the external pressure so as to open the liquid injection hole; when the external pressure is smaller than or equal to a first set value, the plugging piece gets close to the liquid injection hole under the action of the elastic piece to seal the liquid injection hole. When liquid supplementing is not needed, the blocking piece reliably seals the liquid injection hole under the action of the elastic force of the elastic piece, and when liquid supplementing is needed, the blocking piece overcomes the elastic force of the elastic piece under the action of external force, and the blocking piece can easily open the liquid injection hole.