104results about How to "Prevent prolapse" patented technology

The utility model relates to drainage tube technical field, and disclose a lumbar cistern drainage tube subcutaneous device that lurks, include: puncture needle, the left side of puncture needle is equipped with the prong, the outer wall of puncture needle is equipped with antiskid wall, the right side of puncture needle is equipped with access head, the inner wall of access head is sleeved with rubber ring, the outer wall of puncture needle fixedly connects hand pressure plate, the inner wall of puncture needle is sleeved with liquid guide tube, the inner chamber of liquid guide tube is opened with liquid flow hole, the outer wall of liquid guide tube is connected with transparent cover, the inner chamber of transparent cover is opened with liquid chamber, the outer wall of transparent cover is connected with the pull ring, this lumbar cistern drainage tube subcutaneous device lurks, through setting barb, drainage tube and adhesion paste, stopper etc.

The utility model discloses a kind of installation structure of copper busbar, to provide a kind of installation structure of copper busbar when installing copper busbar can be quickly inserted and installed.It includes: copper bar main body, the both ends of copper bar main body are equipped with mounting hole;Plug-in assembly, the plug-in assembly is installed on copper bar main body and corresponds with mounting hole;Expansion block, the expansion block is installed on plug-in assembly.The beneficial effects of the utility model are: when installing copper busbar, it can be quickly inserted and installed, the tightness of sticking can be guaranteed, plug-in assembly can be conveniently disassembled, plug-in assembly can be fixed, fixed block shape can be supported, expansion block can be prevented from coming out, and fixed block can be protected.

This utility model relates to the field of spillway tunnel support technology, specifically a reinforcement support device for spillway tunnel excavation. It includes a fixed frame, with lifting blocks bolted to both ends of the fixed frame. A support block is slidably connected to the lower end of each lifting block, and a support base is fixed to the lower end of each support block. Multiple brackets are fixed to the top surface of the lifting blocks. Connecting seats are fixed to the outer ends of the brackets and both ends of the top surface of the fixed frame. Arc-shaped blocks are bolted to the connecting seats. A first pressure-relief block is fixed between two adjacent arc-shaped blocks. A second pressure-relief component is installed at the end of each bracket near the arc-shaped block. A connecting component, including an insert block, is installed on the arc-shaped block. The first pressure-relief block between adjacent arc-shaped blocks and the second pressure-relief component at the end of the bracket undergo controllable limited deformation, absorbing the energy released by the surrounding rock while maintaining stable support for the surrounding rock. This reduces the rigid stress on the structure, decreases brittle failures such as retaining wall cracking, support bending, and joint collapse, and lowers the risk of collapse.

The utility model belongs to the technical field of clothes, concretely relates to a convenient clothes label of changing, including the protective layer, label layer and connecting assembly who set up in order along its thickness direction, label layer is provided with the storage groove, be provided with electronic ink screen in the storage groove, connecting assembly includes installation layer and slide rail, one side of installation layer is bonded in label layer, the other side of installation layer installs slide rail, the slide rail is used for with the snap -groove on clothes sliding connection, the slide rail can detachable connection snap -groove, the end of slide rail is provided with magnet block, one side of the length direction of snap -groove is provided with the magnetism piece that cooperates with magnet block, the utility model discloses through optimizing label structure, solves the problem that once existing label is fixed and cannot change, is helpful to convenient label change.

The utility model belongs to automatic assembly equipment field provides a kind of for the automatic assembly equipment of plug and tray, including rack and the bearing mechanism, positioning mechanism, feeding mechanism and assembly mechanism being set on the rack.Compared with prior art, the utility model has the advantages that by setting bearing mechanism and positioning mechanism cooperation, the tray to be assembled can be stably fixed, and the accuracy of assembly reference is ensured;After the plug is adjusted to array arrangement by pushing material block and is filled to assembly mechanism synchronously, the feeding efficiency is significantly improved;In addition, the cooperation of material guide block, anti-drop block and elastic limiting block allows multiple plugs to be squeezed and compressed in the filling direction to accommodate the arrayed plugs, and then the plugs are elastically reset to prevent them from falling out, achieving orderly temporary storage and one-way guidance of the plugs, ensuring the continuity and stability of subsequent assembly, and the overall structure realizes efficient and accurate automatic assembly of the plugs to the tray, improving the assembly efficiency and quality of the tray and the plug.

The utility model belongs to the field of logistics technology discloses a kind of sorting device and sorting equipment.Sorting device includes sorting mechanism and sorting drive mechanism, and sorting mechanism includes vertically extending installation stand, the object table that can be lifted along the installation stand and the two walking guide components that are set apart along the height direction of the installation stand;Sorting drive mechanism is installed at the side of the installation stand away from the object table, and set apart between two walking guide components, and sorting drive mechanism can rotate around vertical axis relative to the installation stand.Sorting equipment includes sorting track and sorting device, and sorting track includes two guide tracks and travel track that are set apart between two guide tracks, and two guide tracks are set apart and are set apart up and down;Two walking guide components are rolling fit with two guide tracks, and sorting drive mechanism travels in travel track.The utility model can improve the operation stability and reliability of sorting device.

The utility model discloses a continuous anaerobic fermentation reactor of grain by-product microorganism fermentation carbon source belongs to the technical field of microorganism fermentation, and its technical scheme main points include reactor body, the top of reactor body is fixed and is connected with the exhaust pipe, the surface fixed connection of reactor body has a plurality of branch legs, the bottom fixed connection of branch leg has the bottom plate, the top of bottom plate is provided with the receiving box, the inside of receiving box is provided with the material blocking mechanism, both sides of receiving box all are provided with the limiting mechanism, the front side fixed communication of reactor body has the discharge pipe, the solution has solved the reactor of the continuous anaerobic fermentation of part to grain by-product, and the position of discharge port does not have the anti - splash structure, when needing to receive the long -distance transfer of biogas slurry and biogas residue, the biogas slurry and biogas residue of biogas residue discharge process can easily take place splash, pollute the problem of operation staff's body and working environment.

This utility model relates to the technical field of sealing mechanisms and discloses a sealing mechanism for the left side of an oil passage, including a mounting plate, a sealing plate on one side of the mounting plate, a conical platform on the sealing plate, a rubber sleeve fixedly fitted on the outer wall of the conical platform, a connecting rod fixedly connected between the side wall of the mounting plate and the side wall of the sealing plate, a clamping assembly between the mounting plate and the sealing plate, the clamping assembly pressing against the inner wall of the oil passage, and a buffer assembly between the sealing plate and the conical platform to buffer the impact force received by the conical platform. The buffer assembly, consisting of a rubber plate, a fixed cover, a fixed rod, a movable block, an arc-shaped spring, and a second connecting rod, can absorb the impact force when the conical platform is impacted by the deformation of the arc-shaped spring. Compared with devices in the prior art that do not have an effective buffer structure, this greatly improves the sealing mechanism's ability to resist liquid pressure impacts and reduces sealing failures caused by impacts.

The application discloses an integrated safety recycling pen cap for an insulin pen and a use method, and aims to solve the problems of high risk of needle stick injury, poor universality and complicated operation in the process of disassembling and recycling the existing insulin needle. The application comprises a pen cap body, a guide piece and a force relieving piece coaxially arranged in the pen cap body, a pen top component with a top block slidingly connected to the cap top of the pen cap body, a telescopic piece with a reset function arranged between the pen top component and the guide piece, and a reinforcing piece penetrating through the circumference of the pen cap body. The guide piece is an outer equal-diameter cylindrical hole with an inner truncated conical hole structure, and the force relieving piece is an outer truncated conical rotary surface with an inner equal-diameter cylindrical hole structure with an axial anti-skid groove. The application can realize contactless disassembly and recycling of the insulin needle throughout the whole process, is suitable for different specifications of needles, has high structural integration and is easy to operate, and can completely avoid the risk of needle stick injury.

This utility model relates to a quick-assembly and disassembly device, specifically a safety protection device that allows for quick assembly and disassembly. It includes a protective cover with mounting plates symmetrically arranged at both ends. A wire-binding component is fixedly mounted on the side wall of each mounting plate. The wire-binding component includes a first wire clamp and a second wire clamp with identical structural shapes. The two wire-binding components are detachably mounted at both ends of the protective cover. A gravity locking rod is fixedly mounted on the side wall of the first wire clamp, used to achieve gravity locking with both ends of the protective cover. Both the first and second wire clamps have wire outlets through which the wire bundle passes. The arrangement of a movable rod and magnets allows the wire outlets to open and close flexibly. When the movable rod rotates and the first and second magnets attract each other, the wire outlets close, preventing the wire bundle from coming out and protecting it from external interference. When it is necessary to organize the wire bundle, pulling the movable rod separates the magnets, opening the wire outlets for easy wire organization and threading.

This invention discloses an infusion device for bone marrow aspiration, belonging to the field of medical device technology. The invention includes a base, a counterweight, and an infusion assembly. The key features are: the base contains multiple pressure sensing mechanisms, a balancing and stabilizing mechanism, and a protective mechanism. The pressure sensing mechanism includes a pressure groove and a sensing piston, connected to a large air reservoir and a small air reservoir; the balancing and stabilizing mechanism includes a balancing groove, a moving slider, a telescopic spring, a stabilizing plate, and a lifting piston. The lifting piston is connected to the moving slider via a traction line, and the small air reservoir is connected to a limiting cavity via an air inlet pipe; the protective mechanism includes a fixed support, a rotating shaft, a protective cloth, and a reinforcing rope. The large air reservoir is connected to an adjusting cavity, and the adjusting piston is driven by the rotating shaft; the rotating shaft is also connected to a limiting assembly for controlling the extension length of the stabilizing plate. This invention achieves dynamic stabilization, intelligent protection, and coordinated adjustment through pneumatic linkage, effectively preventing needle displacement and ensuring infusion safety.

This application relates to a battery manufacturing apparatus. The apparatus includes: a conveying device for conveying battery cells; and an insertion device and an adhesive applicator, arranged sequentially along the path along which the battery cells are conveyed. The insertion device is used to insert a center rod into the center hole of the passing battery cell; the adhesive applicator is used to apply adhesive tape to the end face of the passing battery cell. Thus, by using the insertion device to insert the center rod into the center hole of the passing battery cell, and then using the adhesive applicator to apply tape to the end face of the passing battery cell, the tape seals the center hole of the battery cell, preventing the center rod from detaching from the center hole, thereby improving the yield rate of the battery cells.

The utility model relates to the technical field of beauty instrument, and disclose a massage type beauty eye instrument with replaceable silica gel head, including beauty instrument body and the bandage of fixed mounting on beauty instrument body, the symmetry of left and right of beauty instrument body is provided with two groups of massage components, every group of massage components all are by a plurality of massage head and set up in the massage subassembly of corresponding massage head, and the massage subassembly includes silica gel cover, connecting mechanism, mounting mechanism and stop gear, silica gel cover sets up on mounting mechanism, mounting mechanism sets up on connecting mechanism, and stop gear sets up between connecting mechanism and mounting mechanism, connecting mechanism includes fixed part, connecting column, the utility model discloses through setting connecting mechanism and the hole of giving place, compression spring, pressing plate, so that compression spring can drive connecting column to move to the direction of far away from fixed part through pressing plate to drive L shape block to be connected in L shape groove, make connecting column be limited, and personnel is convenient to install the installation head of different.

The application discloses a detachable connecting device and an aircraft, and aims to improve the disassembly and assembly efficiency. The detachable connecting device is used for detachably connecting a first component and a second component, and comprises a locking mechanism and a linkage mechanism which are interlocked; the locking mechanism is used for cooperating with a locking groove arranged on the first component, the linkage mechanism is used for being fixedly connected with the second component, and the locking mechanism can be locked or separated from the locking groove under the drive of the linkage mechanism. In use, the detachable connecting device is preassembled on the second component. When the first component and the second component are assembled, the linkage mechanism is only needed to be operated, so that the locking mechanism is driven to be locked with the locking groove, the detachable connection between the first component and the second component is realized; when the first component and the second component are disassembled, the linkage mechanism is only needed to be operated, so that the locking mechanism is separated from the locking groove, and the separation between the first component and the second component is realized. The device omits the cumbersome steps of disassembling and assembling multiple fasteners one by one, significantly shortens the disassembly and assembly time, and effectively improves the disassembly and assembly efficiency.

The utility model discloses a kind of cutting blade mounting devices for color steel sandwich board, it is related to plate processing technical field, including support seat, the side of support seat is provided with support plate, the side of support plate is fixed with fixed plate, the bottom of fixed plate is fixed with mounting bracket, the inner wall of mounting bracket is inserted with mounting plate, the bottom of mounting plate is fixed with cutting blade, the side of mounting plate is fixed with two groups of limit frame, the inner cavity of two groups of limit frame is all set with multiple groups of limit slot, the inside of mounting bracket is provided with the limit component for the limit of mounting plate. The utility model has the beneficial effect that: by slider drive limit block inserts the inside of limit slot, to reach the effect of the limit of limit frame, mounting plate is installed in the inside of mounting bracket, ensure that cutting blade is installed firmly, by support block for the limit of push block.

The utility model relates to a novel elevator with double counterweight housings, which comprises an elevator car and a counterweight mechanism, the elevator car is connected with the counterweight mechanism through a steel wire rope and a double-wheel tractor, the counterweight mechanism comprises two counterweight units, the two counterweight units are connected through a pair of fixing plates, and the two counterweight units are connected through a pair of fixing plates. The steel wire rope is connected to the surface of the uppermost fixing plate. The double counterweight units are arranged in parallel, so that the occupied width of the counterweight units is reduced, the width of the lift car is increased, the split type balancing weights and the stand columns are installed in a combined mode through the notches, fast increase and decrease of balance weights are supported, and different load-carrying requirements are met. A vertical guide system formed by the guide rods and the sleeves restrains the counterweight housing from shaking, and synchronous movement of the double counterweight units is guaranteed. The threaded rod lifting mechanism supports overall height adjustment of the counterweight housing, and the counterweight block is convenient to overhaul or replace. And the limiting rod and the end cover are double-locked, so that the clump weight is prevented from falling off due to vibration, and the operation safety is improved.

The utility model discloses a massage mechanism running track structure of convertible massage bed or chair, and the front end of electric massage mechanism is equipped with running gear, and running gear is installed on the gear strip to make electric massage mechanism can reciprocating operation, and the bottom of the rear end of electric massage mechanism is installed with upper guide pulley, and the flexible guide rail is the flexible metal strip or plastic strip, and is installed below the gear strip, and the both sides of guide pulley frame are installed with lower guide pulley, and the upper guide pulley of electric massage mechanism is through the lower guide pulley cooperation of guide pulley frame and installs the flexible guide rail, makes it when running not deviate, and angle adjusting mechanism is adjusted into massage bed mode or massage chair mode through controller, the utility model discloses realized massage bed or massage chair in electric adjusting backrest angle's time not to influence electric massage mechanism operation, can lie down massage and can sit and massage, greatly promote user use experience, adapt to more use scene simultaneously, and one thing two use cost performance is higher, and the production cost is low, and it is favorable to the popularization and application.

The application belongs to the technical field of connectors and discloses a wire end connector which comprises a plug shell and a fixing piece, the plug shell is internally provided with a fixed section and an insertion section which are connected with each other along a first direction, cable mounting grooves are provided through the fixed section and the insertion section along the first direction, an insertion groove is formed in the side wall of the fixed section and is communicated with the cable mounting groove, and the insertion section can be inserted into a mating shell of a mating connector; the fixing piece comprises a main body and an extension which are connected with each other along the first direction, the main body is provided with a first cable limiting part, the main body can be inserted into the insertion groove, the first cable limiting part is clamped into a circumferential groove of a cable, and the extension is inserted into the mating shell. The wire end connector is used for improving the connection reliability of the wire end connector and the cable, thereby ensuring the normal conduction of current or signals.

The utility model provides a kind of thermocouple and ignition needle mounting structure of infrared burner, it includes furnace head body, thermocouple and ignition needle, the middle position of furnace head body is equipped with assembly hole position, assembly hole position is equipped with clamping interface and mounting hole, the thermocouple is clamped on the clamping interface, ignition needle is connected with mounting hole by screw and is against thermocouple, to prevent thermocouple from separating from clamping interface. The mounting mode of thermocouple uses clamping, and the installation of ignition needle is abutted to thermocouple, to prevent thermocouple from separating from clamping interface;Therefore, the installation structure is only fixed on ignition needle using screw fixing, and thermocouple uses clamping with higher installation efficiency, so that the assembly efficiency is greatly improved.

This invention belongs to the field of vehicle seat vibration damping technology, and particularly relates to a low-profile seat airbag suspension vibration damping structure. This invention provides a low-profile seat airbag suspension vibration damping structure, which, by setting a scissor bar mechanism, a main airbag assembly, a limiting webbing, a C-shaped fixing plate, and a C-shaped groove on the vibration damping top cover and vibration damping base, achieves the following: 1. By integrating the roller sliding stroke of the scissor bar mechanism into the vertical space formed by the bending of the vibration damping top cover and vibration damping base, additional stacking height is avoided, achieving a low-profile integrated layout suitable for installation environments with limited vertical space; 2. The limiting webbing is fastened to the C-shaped groove of the C-shaped fixing plate at both ends, allowing for quick assembly in confined rear spaces without fasteners. Furthermore, the groove wall clamps and locks under tension, preventing dislodgement and achieving long-term reliable flexible upper limit positioning, thus preventing the main airbag assembly from over-expanding and failing.

The utility model relates to lightning protection structure technical field, the utility model provides a lightning protection structure for transmission tower, including lightning arrester body still including mounting bracket, ground wire and positioning mechanism, mounting bracket sets up one side at lightning arrester body, is equipped with the mounting groove on mounting bracket, the groove bottom of mounting groove is equipped with the installation mouth, the bottom of lightning arrester body is adapted with mounting groove, wherein, the bottom of lightning arrester body stretches into mounting groove, ground wire installs at the bottom of lightning arrester body, ground wire penetrates installation mouth and carries out grounding treatment, positioning mechanism sets up between mounting bracket and lightning arrester body, is used to install and fix between mounting bracket and lightning arrester body, through above technical scheme, is used to solve the technical problem of low stability of lightning arrester installation on transmission tower in prior art.

The utility model discloses construction elevator safety braking device, the safety tongs includes the body, the back surface lower extreme fixedly connected with the guide block of body, the body one side upper end and lower end all are seted up with the slot, the body inner wall and be located between two slots seted up with the sliding slot, the body one side movable contact has antiskid board close to the slot, the antiskid board one side upper end and lower end all fixedly connected with the plug -in block close to the body, the inside and the plug -in block whole of slot are all seted up as L shape, two the inside of slot all are inserted with the plug -in block inside and are opposite, the lower extreme surface fixedly connected with the locating shaft of antiskid board, the locating shaft is inserted with the bottom surface of body, and the body front surface sets up the backing plate structure to support the bottom surface of plug -in block in the slot, and then guarantees the stable locking of plug -in block to the slot, and the plug -in block structure of the slot fixed with antiskid board in the body all simple structure, convenient processing and the combination installation of body.

This utility model relates to the field of electronic circuit manufacturing equipment technology, and discloses a flexible clamping board flipping conveyor line, including: a frame, on which a feeding conveyor line, a flipping device, and a discharging conveyor line are sequentially arranged along the conveying direction; the flipping device includes two flipping structures arranged opposite each other on both sides of the frame, and the flipping structure includes: a rotating mechanism; a guiding component, disposed at the output end of the rotating mechanism, including two rows arranged in parallel vertically, which together form a guide groove for accommodating the board, the rotating mechanism is used to drive the guide groove to rotate around its central axis in the depth direction, and to connect one end of the guide groove with the feeding conveyor line and the other end with the discharging conveyor line; this utility model controls the release and reset function of the elastic component through a traction mechanism, automatically completing the clamping and releasing actions, with a high degree of automation, reducing additional manual intervention or complex independent drive systems, and making the equipment structure simpler and more reliable.

This invention provides a compressor housing assembly, a compressor, and an air conditioner. The compressor housing assembly includes a compressor housing and a sensor mounting bracket fixedly connected to the compressor housing. The sensor mounting bracket includes a mounting body, and an insertion channel for pressing a temperature measuring section of a temperature sensor is formed between the mounting body and the compressor housing. A cantilever pressing structure is formed on the end face of the mounting body downstream of the temperature sensor insertion direction. The cantilever pressing structure extends a predetermined length M along the insertion direction, where 7L / 8≥M≥L / 3, where L is the axial length of the temperature measuring section of the temperature sensor. This invention ensures a large pressing contact area with the temperature sensor, thus ensuring reliable pressing and preventing loosening due to an insufficient pressing contact area or scratches or pressure damage to the sensor due to excessive local force. The deformation of the cantilever pressing structure is also more controllable.

The utility model relates to the technical field of color steel tile, and disclose a kind of color steel tile structure facilitating photovoltaic panel installation, including several tiles, several tiles are set at equal intervals, fixedly connected between tile, same one ridge is fixedly connected on two adjacent tiles, the bottom surface of ridge is provided with a give way slot, several groups of clamping assemblies are provided on ridge, mounting assembly is provided on ridge, mounting assembly includes several equidistantly arranged guide rails, fixedly connected between guide rail, the utility model is by being provided with clamping assembly, mounting assembly, bolt, nut, so that the first limiting block on adjacent guide rail can be limited by same one sleeve block, so that preliminary connection limit between multiple guide rails is carried out, bolt, nut are limited to fixed block, sleeve block, first limiting block, second limiting block, so as to limit clamping block, guide rail, baffle, so that personnel need not multiple respectively to each component is fixed.

This application discloses a relay, including a contact cavity, a moving contact assembly, and a fixed magnetic conductive assembly. The contact cavity has a contact chamber; at least a portion of the moving contact assembly is movably disposed within the contact chamber; the fixed magnetic conductive assembly is mounted in the contact cavity and includes an insulating member and a first fixed magnetic conductive member located on the same side as the moving contact assembly. The insulating member is connected to the first fixed magnetic conductive member and isolates the contact cavity from the first fixed magnetic conductive member. The first fixed magnetic conductive member is configured to generate a short-circuit-resistant attractive force based on the magnetic field generated when the moving contact assembly is energized.

This utility model discloses a three-point communication idle-spinning padlock cylinder, belonging to the field of lock technology. The three-point communication idle-spinning padlock cylinder includes a lock shell, one end of which is open and a lock cover is fixedly connected to the opening. The other end of the lock shell has an integrally formed boss. A main control board and a drive motor are fixedly installed inside the lock shell. It can add three contact points and make them work simultaneously, enabling parallel processing of more data. In scenarios with large amounts of encrypted data, such as asymmetric algorithms, it can quickly complete data transmission and encryption processing. Simultaneously, the improved communication stability reduces signal interruptions and errors, ensuring the accuracy of data transmission and effectively improving the reliability of locks in the field of security protection. It provides a more robust security guarantee for devices such as anti-theft doors. Compared to traditional single-point communication idle-spinning padlock cylinders, the three-point communication idle-spinning padlock cylinder greatly improves communication efficiency.

The utility model relates to locking device technical field, concretely relates to a heavy -duty caterpillar self -propelled vehicle support foot locking device. Including the positioning pin, the positioning pin is the structure that upper half part is thin cylinder, lower half part is thick cylinder and middle part is inclined surface, the positioning pin bottom is equipped with the pin hole that uses with the positioning pin bottom insertion joint, the positioning pin side is equipped with the limiting piece that uses with the positioning pin inclined surface joint cooperation, the positioning pin outer wall is equipped with the pin sleeve, the pin sleeve top is equipped with the top cap, the top cap top sets up the through -hole, the through -hole is used for the positioning pin to pass through and diameter is equal to the thick cylinder diameter of positioning pin. The utility model discloses through the joint cooperation of positioning pin inclined surface and limiting piece, can effectively enhance the insertion joint firmness of positioning pin in pin hole. And the utility model discloses through the friction between top cap and positioning pin thick cylinder and the joint of limiting piece to positioning pin thick cylinder, makes positioning pin pull out after being able to be limited in pin sleeve, avoided the loss of positioning pin.

The utility model discloses a kind of multifunctional ultrasonic knife connecting devices, including socket and plug, socket proximal end has socket, socket is built-in with lock rod assembly, lock rod assembly includes lock rod and transmission connecting piece, lock rod is connected in socket by transmission connecting piece, socket is equipped with arc limit slot, plug is equipped with L type slot, lock rod is vertically slidably inserted in arc limit slot, its bottom end is slidably clamped in L type slot, the turning point of L type slot forms the dead point position of lock rod, with plug is inserted into socket, the bottom end of lock rod is synchronously slid into the slot starting end of L type slot and until moved to its slot end, to limit the plug-in between plug and socket;Socket is provided with identification switch, the distance between identification switch and socket is adapted to the insertion length of plug, only when plug is completely inserted into socket can trigger identification switch. The present scheme is connected between plug and socket by lock rod assembly and identification switch effectively.