67results about How to "Difficult to break away" patented technology

A rubber roller pressing and adjusting mechanism and a sealing machine containing the same are disclosed. The mechanism includes a rubber roller mechanism and a pressing and adjusting mechanism disposed within the machine body. The rubber roller mechanism includes an upper rubber roller and a lower rubber roller. The pressing and adjusting mechanism includes an adjusting plate, a fixing plate, and an elastic element. The adjusting plate includes a horizontally arranged pressure plate and a longitudinally arranged operating plate connected to the pressure plate. The pressure plate is used to press the upper rubber roller from above. The lower end of the operating plate is provided with adjusting teeth, and the upper part of the operating plate extends outward from the outer side of the machine body. The fixing plate is fixed to the bottom plate of the machine body. A rack is provided on the fixing plate, and the adjusting teeth are used to engage in the groove between two adjacent teeth on the rack. The elastic element is connected between the adjusting plate and the bottom plate. The technical solution of this application has the advantages of not requiring the machine body to be flipped, and being able to directly adjust the pressure between the upper and lower rubber rollers by acting on the operating plate on the outer side of the upper part of the machine body. The adjustment is convenient, and the stability after pressure adjustment is strong.

The application relates to the technical field of connectors and discloses a preassembled connector which comprises a shell, a limiting strip for abutting against a terminal is arranged on the shell, a limiting shell is arranged on the shell, limiting holes for the terminal to pass through are arranged on the limiting shell, a second limiting groove is arranged on the limiting hole, a first limiting groove is arranged on the bottom wall of the second limiting groove, a fixing block is arranged on the limiting shell, and a first fixing groove and a second fixing groove are arranged on the shell; when the fixing block is located in the first fixing groove, the limiting strip abuts against the groove wall of the first limiting groove, and the limiting strip does not extrude the terminal; when the fixing block is located in the second fixing groove, the limiting strip abuts against the groove wall of the second limiting groove, and the limiting strip extrudes the terminal; the shell and the limiting shell of the application can be preassembled before transportation, so that the customer does not need to assemble the shell and the limiting shell, thereby facilitating the assembly of the customer.

The utility model relates to the technical field of circuit breaker, and disclose a kind of overload alarm undetach function selectable moulded case circuit breaker, including circuit breaker main body and wiring terminal being installed on circuit breaker main body, the top and bottom of circuit breaker main body are all fixed with mounting frame, the side of mounting frame close to circuit breaker main body is fixed with multiple pivots, the number and position of pivot are matched with the number and position of wiring terminal, the outside sleeve of each pivot is equipped with rotating block, the side of rotating block away from pivot is slidably connected with protection plate, the side of protection plate away from pivot is equipped with fixed component. This kind of overload alarm undetach function selectable moulded case circuit breaker, the wiring end and side edge of wiring terminal are protected by protection plate and fixed plate, so as to avoid dust into wiring terminal inside, lead to wiring terminal be corroded damage.

The utility model relates to the field of pipe body pulling devices, and discloses an oil pipe pulling device. The lifting device comprises a lifting rod, a clamping block and a lifting hammer, the clamping block is located at the bottom end of the lifting rod, the clamping block is suitable for being arranged on the metal oil pipe in a sleeving mode, the clamping block is in threaded connection with a hand-screwing bolt, and the end of the hand-screwing bolt is suitable for abutting against the outer wall of the metal oil pipe so as to clamp the metal oil pipe; the lifting hammer is a cylinder and slidably arranged on the lifting rod in a sleeving mode, a blocking ring is fixedly arranged at the top of the lifting rod, the outer diameter of the blocking ring is larger than that of the lifting rod, and the lifting hammer is suitable for being held by a user and colliding with the blocking ring so as to apply pulling-out force to the metal oil pipe. When the metal oil pipe is pulled out, operation is easy and convenient; labor is saved; the application range is wide; and the stability is high after the metal oil pipe is clamped by the hand-screwing bolt.

The utility model belongs to the technical field of special equipment for ceramic capacitor manufacturing, specifically relates to a winding tension control system and a casting machine for multilayer ceramic capacitor manufacturing. The winding tension control system comprises a feeding roller shaft, a rotating part rotatable around its central shaft and coaxially fixedly connected with the feeding roller shaft, an adjusting belt provided along the outer edge of the rotating part and having a fixed end and a movable end, and a driving part connected to the movable end of the adjusting belt for providing a pushing and pulling force. The wrapping angle of the adjusting belt on the rotating part is less than 360 degrees. The rotating part can rotate synchronously with the feeding roller shaft. The driving part can generate a pushing and pulling force to change the tightness of the adjusting belt on the rotating part, thereby adjusting the rotating speed of the feeding roller shaft to make the tightness of the carrier film appropriate, and the carrier film tightness adjustment can be completed more quickly and conveniently. The casting machine for multilayer ceramic capacitor manufacturing comprises the aforementioned winding tension control system.

The utility model relates to the field of automobile safety supplies, and discloses a fixing structure of a restraint system and a child safety seat. The chair comprises a chair back, two fixing seats and a head hood framework, the two fixing seats are installed on the chair back in a spaced mode, and the head hood framework is detachably connected with the two fixing seats; each fixing base is provided with a first fixing part, two second fixing parts are arranged on the head hood framework at intervals, and the first fixing parts and the second fixing parts are both suitable for limiting the safety belts so that the two safety belts can be located on the left side and the right side of a passenger. After the head hood framework is installed, the safety belts are located on the left side and the right side of a passenger through the second fixing parts and cannot be pressed behind a child, and convenience of sitting of the child is improved; after the head tent framework is detached, the safety belt is limited and fixed through the first fixing part, and the device is suitable for different scenes; the clamping piece can be matched with the groove wall of the open groove to clamp and limit the safety belt, and the safety belt limiting and fixing stability is improved.

This application relates to the technical field of circular looms and discloses a shuttle for a suspended circular loom, comprising a shuttle frame, a first bobbin seat and a second bobbin seat oppositely disposed on the shuttle frame, the first bobbin seat and the second bobbin seat being rotatably mounted on the shuttle frame, and a shuttle sliding screw provided on the shuttle frame for sliding the first bobbin seat, the shuttle sliding screw being provided with an elastic element, the elastic element having a tendency to drive the first bobbin seat towards the second bobbin seat. This application uses the elastic element to press the first bobbin seat towards the second bobbin seat, thus clamping the weft spindle between the first bobbin seat and the second bobbin seat, thereby preventing the weft spindle from flying off the shuttle frame when the shuttle rotates at high speed, reducing the probability of circular loom failure, improving the weaving efficiency of the circular loom, and the addition of a stop arm facilitates the replacement of the weft spindle.

The utility model relates to traffic tool technical field discloses a wire harness interface waterproof component for automobile anti -theft control unit, including anti -theft control unit shell and top cap, the inner wall of anti -theft control unit shell is provided with printed circuit board, wire harness body is fixedly installed to the outer edge of printed circuit board, and one end fixed mounting of anti -theft control unit shell is close to wire harness body has the locating seat. This wire harness interface waterproof component for automobile anti -theft control unit, waterproof component body made of rubber has good sealing property, can avoid water through wire harness interface and enter anti -theft control unit shell inside, lead to printed circuit board electric leakage damage, and the sealing property is higher, through the design of waterproof component body middle larger outer diameter both ends smaller outer diameter, make waterproof component body can be well clamped in the inside of locating groove no.

The utility model discloses a kind of cooking utensils, it includes pot body, lug, pot cover and push button, the lug is located at the outer periphery of the pot body, the lug is integrally formed with the pot body, the lug is equipped with sliding slot, the pot cover is equipped in the upper end of the pot body, the sliding slot is opened to the side of the pot cover and is arranged, the push button has elasticity to be installed in the sliding slot, the push button is movable relative to the lug along the direction towards the pot cover and away from the pot cover to have unlocking position and lock position, in the lock position, the push button is located on the top surface of the pot cover, in the unlocking position, the push button is away from the pot cover. The connecting structure of the pot body and the pot cover of the cooking utensil of the utility model embodiment is simple, and assembly efficiency is improved.

The application provides a thermal printer integrated with PC functions, and relates to the technical field of thermal printing. The thermal printer integrated with PC functions comprises a printer support and a thermal printer body. The thermal printer body is located above the printer support. A host docking seat is fixedly connected to the upper surface of the rear of the printer support. A machine case placement plate is vertically fixedly connected to the upper surface of the host docking seat. A PC machine case is installed on the machine case placement plate. The thermal printer and the computer are integrated in the application. The thermal printer integrated with PC functions has better data calculation and information processing functions. The thermal printer can remotely receive data through a network for printing, so that the printing work is more convenient and fast, and the practicality of the thermal printer is improved. When the printer is transferred, the printer integrated with the computer can be directly carried without repeated disconnection and connection of wires, and the influence of messy data lines on the neatness of the office environment is avoided.

The utility model relates to the technical field of simulation lawns, and discloses a simulation lawn capable of being quickly spliced, which comprises a grass yarn layer, the lower surface of the grass yarn layer is fixedly connected with a filling layer, the lower surface of the filling layer is fixedly connected with a backing layer, and the lower surface of the backing layer is fixedly connected with a bottom layer. A plurality of clamping blocks arranged at equal intervals are fixedly connected to the left side and the front side of the bottom layer, a plurality of clamping grooves arranged at equal intervals are formed in the right side and the rear side of the bottom layer, a plurality of mounting grooves are formed in the bottom layer, fixing seats are fixedly connected into the mounting grooves, and fixing mechanisms are detachably connected into the fixing seats. According to the simulation lawn, the compactness between the two lawns can be improved, the situation that the two lawns are staggered can be avoided, when the simulation lawn is laid on soil, a fixing mechanism can be installed and inserted into the soil, so that the simulation lawn is not prone to being separated from the ground, the wind resistance and the pressure resistance of the lawn are improved, and the simulation lawn is convenient to use. And the displacement or damage of the lawn caused by factors such as wind power or manual treading is reduced.

The utility model relates to the field of equipment safety, in particular to a special equipment internet-of-things safety monitoring matching instrument, which comprises a bearing frame and a card reading frame which are arranged inside and outside and are respectively used for bearing a card and matching a special equipment authorized electricity-taking safety monitoring box for installation, and a clamping frame which is arranged inside the card reading frame and is mainly composed of a screw rod, a sliding rod and the like, the lifting mechanism is used for promoting the bearing frame to move inside and outside the card reading frame and facilitating taking and placing of the IC card; compared with the prior art, the device has the advantages that the card placing part is arranged to be a frame, so that an electric IC card is effectively and stably wrapped from the outside, an unstable simple card inserting mode is replaced, and the card placed in the card reading identification area is not prone to being disengaged due to external interference.

The utility model discloses a urine sediment smear, including bottom glass sheet, both sides of bottom glass sheet upper end all are fixedly connected with the restriction post, be equipped with coating groove between two restriction posts, the inside plug -in of coating groove is equipped with the cover piece, the side vertical of cover piece is equipped with the air hole, one side fixedly connected with storage cavity of bottom glass sheet upper end, the upper end of storage cavity is placed with the roof, the middle portion fixedly connected with the connecting column of roof lower extreme, and the periphery of connecting column lower extreme is equipped with the block plug, the lower fixedly connected with the baffle of storage cavity interior, the middle portion of baffle is equipped with the connecting hole, and the block plug is inserted in the connecting hole, the lower of baffle is equipped with the connecting groove, the connecting hole of connecting groove and upper end is through connection, one side of connecting groove and coating groove are through connection. The utility model discloses through the setting of storage cavity has limited how much of dyeing liquid.

The utility model discloses a terminal for car of shock resistance, it includes integrative top plate, first side plate, bottom plate and second side plate of connection, the top plate, first side plate, bottom plate and second side plate are surrounded and are formed with the plug-in cavity, the front side of top plate extends and has first elastic contact part, and first elastic contact part goes into the plug-in cavity, and first elastic contact part has first outer contact point, and first elastic contact part is wavy, the front side of bottom plate extends and has second elastic contact part, and second elastic contact part goes into the plug-in cavity, and second elastic contact part has second outer contact point, and second elastic contact part is wavy, the rear end of first side plate and second side plate all extends and has the welding part to the back, and the welding part is cylindrical, and the second side plate has first fixed part and second fixed part, and first fixed part is connected fixed with second fixed part cooperation.

The present application relates to the technical field of battery negative electrode material, in particular to an irregular spherical porous carbon and a preparation method and application thereof, and a silicon-carbon composite material and a preparation method and application thereof. The present application emulsifies and compiles liquid phenolic resin under the condition of oil-soluble and water-soluble compound emulsifier, and crosslinks and solidifies, meanwhile, an ultrasonic auxiliary mode is adopted, under the joint action of ultrasonic disturbance and different interfacial tension, the shape of the obtained resin is changed, the spherical resin is adjusted to irregular spherical resin, after pyrolysis and gas activation, irregular porous spherical carbon is obtained. Compared with the spherical carbon, under the premise of maintaining the strength of the spherical carbon, the irregular spherical carbon can increase the contact area between the carbon particles and the binder, the carbon particles and the binder are not easy to separate, and the cycle stability of the battery (especially the lithium ion battery) is improved.

The utility model provides a striking block clamping plate and a striking block clamping structure for a striking drum of an electric wrench, and the striking block clamping plate comprises a plate body and at least one hook assembly arranged on the plate body; the hook assembly comprises two main hooks arranged on the two opposite sides of the plate body respectively and two side hooks arranged on the two main hooks respectively. The striking block clamping structure comprises two striking block clamping plates which are oppositely arranged and a plurality of springs for connecting the two striking block clamping plates; the two ends of the spring are respectively hung and buckled on the main hooks of the two striking block clamping plates, and the arrangement directions of the side hooks on the main hooks hung and buckled at the two ends of the same spring are opposite. According to the utility model, the risk that the spring falls off can be greatly reduced.

The utility model discloses a bait hot filling device which comprises a bait shell with a trapping cavity, a trapping groove is formed in the bottom of the trapping cavity, bait filled through the hot filling technology is arranged in the trapping groove, the bait is tightly attached to the trapping groove, the bait shell is provided with a plurality of side faces, and the side faces are sequentially connected in the circumferential direction of the bait shell to form the circumferential side of the bait shell. Each side face is provided with a trapping hole communicated with the trapping cavity, and the trapping holes account for 1 / 4-1 / 5 of the corresponding side faces. The trapping groove is formed in the bottom of the trapping cavity, and the bait which is poured into the trapping groove through the hot pouring technology and tightly attached to the trapping groove is arranged in the trapping groove, so that the bait is not prone to being separated from the trapping groove and is tightly assembled with the bait shell. Due to the fact that the trapping holes account for 1 / 4-1 / 5 of the corresponding side faces, the small-hole design of the trapping holes prevents bait from being separated from the bait shell from the trapping holes on one hand, the biological characteristics that cockroaches like drilling seams and darkness are met on the other hand, and the trapping effect is good.

The vehicle lamp comprises a shell, a light source assembly and a connecting piece, an installation cavity is formed in the shell, the light source assembly is arranged in the installation cavity and comprises a circuit board and a light source, a matching part and a matching through hole are formed in the circuit board, and the matching part is matched with the shell in a limiting mode in the thickness direction of the circuit board. The connecting piece is arranged in the mounting cavity and comprises a main body, a stopping bulge and at least one clamping hook, the main body is arranged on one thickness side of the circuit board and is fixedly connected with the shell, the clamping hook is arranged on the main body, and the clamping hook penetrates through the corresponding matching through hole and is hooked on the edge of one side, deviating from the main body, of the matching through hole; the stopping protrusions are arranged on the main body, and the stopping protrusions and the clamping hooks abut against the two opposite sides of the hole wall of the matched through hole respectively so as to limit the corresponding clamping hooks to be disengaged from the matched through hole. Therefore, the light source assembly can be indirectly fixed to the shell through the connecting piece, and the stopping protrusions can limit the corresponding clamping hooks to be separated from the light source assembly, so that the arrangement position of the light source assembly is more stable.

The invention provides an inner ear infusion needle. The inner ear infusion needle comprises a puncture needle, an infusion tube, a first connecting seat and a second connecting seat, the front end of the infusion tube is fixedly connected with the puncture needle, and the rear end of the infusion tube is fixed in the first connecting seat; the second connecting seat is inserted into the first connecting seat and is in running fit with the first connecting seat; the second connecting seat is used for being connected with a medicine supply device, and a first sealing gasket is arranged between the second connecting seat and the first connecting seat; and the medicine supply device or the second connecting seat or the first connecting seat is provided with a connecting needle for puncturing the first sealing gasket. After the puncture needle is punctured into the inner ear, the problem that an infusion tube is twisted and wound due to angle adjustment of the puncture needle can be solved only by rotating the first connecting seat relative to the second connecting seat, so that the smoothness of subsequent administration can be ensured, and the risk that the puncture needle is separated from the inner ear is reduced.

The utility model relates to the field of solid-liquid separation, in particular to a solid-liquid separation device, which adopts the technical scheme that the solid-liquid separation device comprises an upper shell and a lower shell, a drain outlet is formed in one end, far away from the upper shell, of the lower shell, a water inlet is formed in one side, far away from the lower shell, of the upper shell, a water outlet is formed in one end, close to the water inlet, of the upper shell, and a water outlet is formed in one end, close to the water outlet, of the lower shell. The utility model has the beneficial effects that when the flange plate B at one end of the lower shell is attached to the flange plate A at one end of the upper shell, the lower shell is inserted into the inner cavity at one end of the upper shell by using the annular insertion plate, and at the moment, one end of the annular insertion plate is attached to the surface of the second boss, so that the flange plate B at one end of the lower shell is inserted into the inner cavity at one end of the upper shell; and positioning convex blocks on the surface of a second boss can be inserted into positioning holes in the surface of an annular insertion plate for rapid positioning, so that misalignment of through holes in the surfaces of the flange plate A and the flange plate B caused by deviation between the upper shell and the lower shell is avoided.

The invention relates to the technical field of underwater building protection, in particular to a self-locking anti-theft sealing device for an underwater building, which comprises a building body, a cover plate, a locking mechanism, a self-locking driving mechanism and a sealing mechanism, one side of the building body is in an opening shape, and first angle bead angle steel is fixedly arranged at the opening of the building body; the cover plate covers the opening of the building body, and second angle bead angle steel is fixedly arranged on the cover plate; the locking mechanism is located on the cover plate and used for driving the cover plate and the building body to be locked. The self-locking driving mechanism is located on the cover plate and used for driving the locking mechanism to work. The sealing mechanism is located between the cover plate and the building body and used for sealing the space between the building body and the cover plate. The manhole sealing device has the sealing and anti-theft effects on the manhole of the underwater building.

The utility model discloses a polishing piece and a polishing device for magnetic polishing, the polishing piece comprises an abrasive wrapping piece used for contacting and grinding a workpiece, and a sealed mounting cavity or a mounting hole penetrating through the surface of the abrasive wrapping piece is formed in the abrasive wrapping piece; and the magnetic attraction piece can be driven by magnetic force and is arranged in the mounting cavity or the mounting hole. According to the utility model, a plurality of abrasive particles can be connected together to form the abrasive coating piece, the abrasive particles are not easy to separate, the service life of the polishing piece is prolonged, the magnetic attraction piece cannot be directly exposed even if the abrasive particles fall off, the magnetic attraction piece cannot directly impact on the workpiece, and the polishing quality of the workpiece is ensured.

The utility model discloses a kind of depth adjusting mechanism of track saw, it is related to the technical field of track saw, it includes mounting bracket;The first end of electric saw support is vertically rotatablely connected in the mounting bracket;Arc-shaped guide rail is fixedly arranged in mounting bracket and is provided with arc-shaped guide slot, and arc-shaped guide rail is provided with arc-shaped rack parallel to arc-shaped guide slot;Baffle block component, baffle block component includes: limit stop, limit stop is arranged in arc-shaped guide rail, limit stop can be moved along arc-shaped guide slot, the second end of electric saw support is abutted on the upside of limit stop;Locking block, locking block is arranged in arc-shaped guide rail side away from limit stop, and locking block is provided with the locking tooth of meshing with arc-shaped rack;Unlock button, unlock button is arranged in arc-shaped guide rail side away from locking block and is connected locking block;Unlock button can be moved close to or away from arc-shaped guide rail.The utility model compact structure, layout is reasonable, it is convenient for user to adjust the cutting depth of track saw.

This utility model discloses an integrated vulcanized sealing seat for a wedge brake self-adjuster, including a support frame. A vulcanized sealing ring is provided on the top of the support frame, and an oil seal spring is provided at the edge of the top of the vulcanized sealing ring. This utility model, by assembling a vulcanized sealing ring on the top of the support frame, provides good toughness and tensile strength after vulcanization, suitable for supporting and adjusting the brake. The top of the outer side of the vulcanized sealing ring is provided with an oil seal spring, ensuring high sealing performance and preventing external impurities from entering. An integrally formed auxiliary leak-proof outer ring is sleeved and engaged on the outer sides of the first and second mounting rings, providing auxiliary sealing. An auxiliary sealing ring is provided on the inner side of the vulcanized sealing ring, creating a sealed inner and outer connection that is not easily detached or leaking. This results in excellent sealing performance and anti-detachment capabilities, stable interference fit, improved preload, and automatic compensation of interference fit even with continuous wear of the sealing ring, demonstrating excellent durability and protective properties.

The utility model discloses a tool jig for detecting neglected magnet installation of a mouse, which comprises an upper template and a lower template, the upper end of the lower template is provided with a mounting groove, the bottom of the mounting groove is provided with a plurality of sensing optical fibers, the sensing optical fibers respectively correspond to the magnet installation position of the mouse, and the magnet installation position of the mouse corresponds to the magnet installation position of the mouse. The lower end of the upper die plate is provided with a plurality of hot melting columns, and the plurality of hot melting columns correspond to the plurality of sensing optical fibers. The application has the effect of improving the qualification rate of the mouse.

The utility model belongs to the technical field of mental fortress, and particularly relates to a mental fortress with a splicing structure, which comprises a foundation, a mental fortress main body is arranged above the foundation, a splicing decorative plate is arranged on the right side of the mental fortress main body, and a plurality of insertion blocks are fixedly mounted on the left side of the splicing decorative plate. Positioning rods are fixedly installed at the four corners of the left side of the splicing decorative plate, a lead screw is rotatably installed on the inner side of the fortress body, a sliding frame is installed on the outer side of the lead screw in a threaded mode, and locking structures are fixedly installed on the front side and the rear side of the right side of the sliding frame. The control limiting block is pulled to enable the clamping block to slide into the inner side of the mounting groove, the splicing decorative plate is positioned through the insertion block and the positioning rod and is inserted into the upper portion of the fortress body, the locking structure can slide into the inner side of the insertion block, and the splicing decorative plate is convenient to mount, dismount and mount and is tight and not prone to disengagement after being locked.

The utility model relates to the technical field of bean grinders, in particular to a grinding cup installation structure which comprises a cup body and a cup base. A concave clamping structure is arranged on the outer peripheral surface of the bottom of the cup body, a clamping part which is concave downwards is arranged on the cup base, a convex clamping structure is arranged on the inner peripheral surface of the clamping part, the bottom of the cup body extends into the clamping part, and the convex clamping structure can be clamped into the concave clamping structure to fix the cup body on the cup base; the cup body is made of metal, and the cup base is made of plastic. Through the matching of the convex clamping structure and the concave clamping structure, the cup body can be firmly assembled, meanwhile, additional processing is not needed, and the material cost and the labor cost are reduced; the plastic cup base is elastically deformed, namely, the plastic cup base can rebound to restore the original state after deformation, the cup body is ensured to be easily assembled to the cup base and is not prone to being separated from the cup base in the using process, the stainless steel cup body can bear pressure and abrasion in the grinding process, and the service life of the grinding cup is prolonged.

The present invention relates to a holder of a long member. A holder of a long member is provided, which can prevent a vibration-proof member from easily coming off a holding member even when a force is applied to the holding member in a direction away from a fixed member, and which can make the holder compact in a height direction. The holder (10) is provided with a holding member (20) having a main body portion (30), a vibration-proof member (50) formed of an elastic material, and a fixed member (80) having a first flange portion (81), a shaft portion (83), and an engaging leg (85), the main body portion (30) having a pair of side walls (31, 31) and insertion ribs (39, 39), the vibration-proof member (50) having a pair of insertion grooves (55, 55), a second flange portion (63), a third flange portion (65), a fixed member holding portion (69) that accommodates and holds the first flange portion (81) and the shaft portion (83), and an opening through which the engaging leg (85) is inserted.

The application relates to the technical field of relay installation, and discloses a relay socket, which comprises a base, spring plugs arranged on the base, the base comprising a mounting portion and two fixing portions oppositely arranged on the mounting portion, a mounting groove for extending the relay into the socket being arranged on the mounting portion, one of the fixing portions being provided with a push rod, a tripping lever being rotationally connected to the push rod, a fixing member being arranged at the end of the tripping lever away from the push rod, the fixing member being used for fixing the end of the tripping lever on the fixing portion without the push rod, and the tripping lever being arranged on the side of the push rod away from the mounting portion. The relay is limited by the tripping lever, the tripping lever can hinder the relay from moving out of the mounting groove, the fixing effect of the socket on the relay is good, and thus the normal work of the relay circuit is ensured.