74 results about "Lead structure" patented technology

The present invention discloses a lead structure and a three-dimensional wound core transformer. When the lead structure and the three-dimensional wound core transformer are in use, the first copper busbar assembly is used to be arranged above the core column, all first wiring parts and all second wiring parts are extended in the vertical direction toward the core column, and the head end of the first valve side coil and the tail end of the first valve side coil are conveniently connected to the first wiring part and the second wiring part. The second copper busbar assembly is used to be arranged below the core column, all third wiring parts and all fourth wiring parts are extended in the vertical direction toward the core column, and the third wiring part and the fourth wiring part are conveniently connected to the head end of the second valve side coil and the tail end of the second valve side coil. All first terminal blocks are extended in the vertical direction away from the core column, and all second terminal blocks are located on the same side of the three-dimensional wound core transformer, so that the first terminal blocks and the second terminal blocks are conveniently connected to external equipment.

The invention discloses a low-voltage lead of an offshore wind power transformer and a wiring method, and belongs to the field of structural design of the low-voltage lead of the offshore wind power transformer, the low-voltage lead mainly comprises four copper stranded wires and an outer wrapping insulating layer, the four copper stranded wires are stranded, and the outer side of the four stranded copper stranded wires is tightly wrapped by the outer wrapping insulating layer; the upper ends of the first copper stranded wire and the second copper stranded wire are led out of an outer wrapping insulating layer through a first wiring terminal, and the upper ends of the third copper stranded wire and the fourth copper stranded wire are led out of an outer wrapping insulating layer through a second wiring terminal. And the lower ends of the four copper stranded wires are not stranded and are exposed out of the outer insulating layer. Two low-voltage leads are adopted, and wiring terminals of the two low-voltage leads are respectively connected with the two groups of low-voltage sleeves through tail sleeves; and the exposed copper stranded wires of the two low-voltage leads are correspondingly connected through a third wiring terminal. The circulating current problem can be avoided, and the loss is reduced; mechanical strength of the low-voltage lead is enhanced, and deformation and movement of the lead are prevented; and the wiring space of the low-voltage lead and the clamping difficulty of the lead can be reduced.

The utility model relates to a golden finger and an electroplating lead structure thereof, the golden finger comprises a first golden finger and a second golden finger which are arranged on a substrate, the first golden finger is connected with a lateral ground hole located in the first direction of the first golden finger, and the electroplating lead structure comprises an electroplating bus and an electroplating branch line; the electroplating bus is connected with at least part of the ground holes in one side of the golden finger in the first direction, and the electroplating branch line is connected with the second golden finger and the electroplating bus; the electroplating lead structure further comprises a blind hole used for disconnecting the electroplating branch line and the electroplating bus of the second golden finger. According to the electroplating lead structure, the electroplating branch lines between the second golden fingers and the electroplating bus are cut off through the blind holes, the performance of high-speed signals borne by the golden fingers is prevented from being affected, and meanwhile, due to the adoption of the blind hole structure, the structure of the other side face of the substrate cannot be damaged.

The utility model discloses a low-voltage lead wire structure and transformer relates to transformer manufacturing technical field, low-voltage lead wire structure includes low-voltage lead wire, low-voltage lead wire includes busbar, horizontal row, three winding row, three longitudinal row and the flexible connection row of one-to-one correspondence with longitudinal row, winding row includes inside winding row and outside winding row, and the flexible connection row includes inside winding row and outside winding row. The outer winding bar is connected with the busbar; at least two arc-shaped holes are formed in the two ends of each longitudinal row at intervals, and the circle centers of the at least two arc-shaped holes in each end coincide; one longitudinal row is rotationally connected with the flexible connection row through at least two arc-shaped holes in one end of the longitudinal row, two of the longitudinal rows are rotationally connected with the transverse row through at least two arc-shaped holes in the other end of the longitudinal row, the transverse row is connected with the inner side winding row, and the other longitudinal row is rotationally connected with the inner side winding row through at least two arc-shaped holes in the other end of the longitudinal row. According to the technical scheme, a general scheme for adjusting the phase spacing of the transformer is provided, and the design period can be effectively shortened.

An electronic device includes a lead with a first portion that extends outward from a package structure and is coated with a dielectric film that extends to the side of the package structure, and an uncoated second portion that extends from the first portion to an end of the lead. A method includes forming a package structure to enclose an interior portion of a lead structure and coating an exterior first portion of the lead structure with a dielectric film that extends to a side of the package structure and leaving an exterior second portion of the lead structure uncoated.

This invention discloses a POP (Position-on-Pack) three-dimensional stacked interconnect substrate and its fabrication method, belonging to the field of printed circuit technology. It improves the design of the suspended lead structure and provides a new suspended lead fabrication process. By utilizing the pre-stack design scheme and combining the thickness tolerance of each layer material, the overall thickness of the substrate product is calculated. With the substrate thickness known, the excess substrate below and between the leads is removed by combining mechanical depth-controlled milling and laser etching. The combination of mechanical depth-controlled milling and laser etching reduces the processing flow of the suspended lead printed circuit substrate compared to the original process, thus improving operational efficiency.

This utility model relates to a low-voltage lead structure, specifically disclosing a low-voltage lead structure that can reduce the additional losses of a three-dimensional wound core transformer. It includes an a-phase low-voltage coil, a b-phase low-voltage coil, and a c-phase low-voltage coil. The starting terminals of each phase low-voltage coil are connected to the corresponding phase terminals via copper busbars. The ending terminals of each phase low-voltage coil are interconnected via copper busbars and connected to the 0-phase terminal. The phase terminals are arranged sequentially on the same side of the transformer where two phase low-voltage coils are located. The starting and ending copper busbars of the other phase low-voltage coil, located away from the plane containing the aforementioned terminals, are partially overlapped. This utility model features a simple lead busbar structure with minimal overall bending, meeting transformer performance requirements and offering high manufacturing efficiency. It is suitable for low-voltage lead structures in three-dimensional wound core transformers.

The utility model relates to a support assembly, an electromagnetic valve, a shock absorber and a vehicle, the support assembly comprises a support body, a lead structure, a first connecting piece and a second connecting piece, the support body is used for winding a coil, the lead structure and the support body are independently arranged, and an inlet wire and an outlet wire of the coil penetrate through the lead structure; the first end of the first connecting piece and the first end of the second connecting piece are connected to the support body, and the second end of the first connecting piece and the second end of the second connecting piece are connected with the lead structure. The first connecting piece and the second connecting piece of the support assembly are adjacent to the lead structure, good structural stability is achieved, deformation of the first connecting piece, the second connecting piece and the support body can be avoided, and therefore the support assembly can be assembled more easily, and magnetic fluctuation of the coil can be reduced.

The invention relates to the field of varnished wire production equipment, in particular to a varnished wire take-up control system which comprises a supporting frame, and a plurality of wire leading structures are arranged on the supporting frame. Each lead structure comprises a hanging mechanism arranged on the supporting frame; the hanging mechanism comprises a hanging frame; each hanging frame is connected with a swinging mechanism; the swing mechanism comprises a swing rod rotationally connected to the hanging frame, and a wiring wheel is rotationally connected to the swing rod; the oscillating rod is connected with a motor control unit; the motor control unit can control the rotating speed of a motor of the enameled wire take-up reel; through the cooperation of the motor control unit and the swing mechanism, the rotating speed of the take-up reel motor can be automatically adjusted according to the tension of the enameled wire, it is guaranteed that the enameled wire always keeps proper tension in the take-up process, and the enameled wire is prevented from loosening in the take-up process.

The application relates to the technical field of electric wire connection, in particular to a substation current lead fixing device which comprises a current lead structure, the current lead structure comprises a wire body and overlapping members arranged at both ends of the wire body; a clamping mechanism arranged at the top of the current lead structure, the clamping mechanism comprises a positioning member and clamping members arranged at both ends of the positioning member; and a mechanical arm structure arranged at the side of the clamping mechanism; wherein the overlapping member comprises a clamping cylinder, the clamping cylinder is a cavity structure, the inside of the clamping cylinder is provided with a conductive sliding block, and the side of the conductive sliding block is provided with an overlapping hook. When the current lead needs to be overlapped, the mechanical arm moves together with the clamping mechanism and the current lead structure, the size can be reduced and then the position can be adjusted for overlapping when entering a narrow space, and the current lead can be overlapped conveniently and quickly by the overlapping member when the current lead is overlapped.

The invention discloses a transformer lead structure, and relates to the technical field of transformers, the transformer lead structure comprises a transformer body, the top of the transformer body is fixedly connected with an L-shaped plate, the top of the L-shaped plate is provided with a through groove in a penetrating manner, and one side of a groove cavity of the through groove is opened. And the mounting mechanism is arranged on the L-shaped plate, and the mounting mechanism is used for fixing the lead. And the shielding mechanism is arranged on the L-shaped plate, and the shielding mechanism is used for shielding the through groove. The arc panels and the fixing frame are arranged into a whole, the problem that an existing fixing assembly is lost or falls off and consequently installation is inconvenient is solved, the two arc panels are separated before the lead is fixed, the lead can be conveniently placed in the semi-barrel, and in the lead fixing process, the lead can be conveniently fixed, and the fixing effect is good. The two cambered surface plates are attached to each other, and a complete cylindrical structure is formed between the two cambered surface plates and the half cylinder bodies, so that the lead can be fixed.

The application provides a segmented, leadless gold finger plate and a preparation method thereof. The method comprises the following steps: making an outer layer pattern on a copper-plated thickened substrate, adding temporary lead lines at the edges of the connecting plate in the gold finger area; after the film is removed, the gold-plated substrate is silk-screened with a wet film and exposed using a second circuit mask plate, and the temporary lead lines are etched and removed; a complete solder resist layer is made on the leadless segmented gold finger substrate using a second solder resist mask plate; and the substrate with the complete solder resist layer is subjected to gold plating treatment to obtain the segmented leadless gold finger plate. The gold finger lead line structure is eliminated, the impedance mutation problem caused by the lead line in the traditional process is eliminated, the high-density wiring space is released by combining with the precise green oil bridge design, the integrity and stability of high-speed signal transmission are greatly improved, and the risk of signal reflection and crosstalk is significantly reduced.

The utility model belongs to the technical field of gold ore exploration, and discloses a low-voltage lead structure of a transformer, which comprises a rectangular substrate, a transformer body fixedly connected to the top of the substrate, a sleeve and a wire mounting structure symmetrically and fixedly connected to the top of the transformer body, and the wire mounting structure is arranged on the wall surface of the transformer body and used for mounting a lead. The wire loading structure comprises an elastic box, a pressing block, a rotating block, a limiting arc and a connecting block, the elastic box is fixedly connected to the front wall surface of the transformer body, the pressing block is movably connected to the front wall surface of the elastic box, the rotating block is slidably connected to the front wall surface of the elastic box, the limiting arc is rotatably connected to the front wall surface of the rotating block, and the connecting block is also slidably connected to the front wall surface of the elastic box; according to the wire mounting structure, the lead is fixed on the front wall surface of the pressing block through a bolt arranged on the arc limiting wall surface, and one bolt arranged on the wall surface of the main rod is dismounted when the lead is dismounted.

The present invention discloses a pod propulsion motor lead structure, comprising a cable, a lead transition joint, a lead, a connection part insulation layer and a supporting structure. The lead transition joint is composed of a copper pipe joint, and the lead is composed of a busbar, a low-glue main insulation material, a low-glue insulation paint, an anti-corona insulation layer and a first insulation protection layer; the connection part insulation layer is composed of a high-glue main insulation material, a high-glue quick-drying insulation paint, an anti-corona insulation layer, a first insulation protection layer, a second insulation protection layer and an insulation protection sleeve. The supporting structure is composed of a cable tie, a support block and a stuffing box or an MCT fixing block. The present invention also discloses a lead method thereof, which adopts a staggered avoidance lattice lead arrangement structure to lead out the propulsion motor leads in the most compact space.

The utility model relates to the technical field of gold finger position lead structures, in particular to a lead structure of a circuit board gold finger position, which comprises a circuit board body, a plurality of uniformly arranged gold finger bodies are arranged on the upper end face of the circuit board body, and a copper sheet positioned above the circuit board body is arranged at one end of each gold finger body. A main lead part is arranged at the rear end of the copper sheet, a plurality of auxiliary leads which are uniformly arranged and connected with the golden finger body are arranged at one end, close to the copper sheet, of the main lead part, an anti-oxidation layer is arranged in the circuit board body, and a graphene heat dissipation layer is arranged on the front end surface of the circuit board body; according to the utility model, the copper sheet has strong conductivity, so that the golden fingers cannot be directly damaged when the lead is stripped, the electric connection between the copper sheet and the circuit board can be improved through the subsequent welding of the golden fingers and the copper sheet, the subsequent use of the circuit board cannot be influenced, and meanwhile, the heat dissipation effect of the circuit board is improved through the reinforced heat dissipation structure layer of the circuit board.

An example lead-frame package, a method of manufacturing a lead-frame package, and an electrical system comprising a lead-frame package with improved conductive lead structure are provided. An example lead-frame package includes a semiconductor IC thermally coupled to a die pad. Molding material encloses the semiconductor IC defining a perimeter of the lead-frame package. A conductive lead is electrically connected to the semiconductor IC and exposed at a surface of the lead-frame package, the conductive lead having a proximal end and a distal end. The distal end of the conductive lead extends beyond the perimeter of the lead-frame package, the distal end bent vertically such that a solder wettable surface of the conductive lead is exposed in a lateral direction. The molding material further insulates the conductive lead from the die pad. A conductive lead recess is defined between the proximal end of the conductive lead and the die pad.

The utility model relates to transformer technical field, concretely is a kind of three-dimensional volume iron core transformer lead structure, including a phase coil, b phase coil and c phase coil, a phase coil, b phase coil and c phase coil three are equilateral triangle setting, and in the process of coil winding, it is wound more 1 / 3 turns to a phase coil, b, c phase coil is wound less 1 / 3 turns, the upper left corner of b phase coil is equipped with b phase head row, and the upper right corner is equipped with b phase tail row, the upper left corner of c phase coil is equipped with c phase tail row, and lower part is equipped with c phase head row, the lower part of a phase coil is equipped with a phase head row, and the upper right corner is equipped with a phase tail row, the included angle between all head, tail is 120 °, box cover is provided above coil, and 0 phase horizontal row is provided between a phase coil and c phase coil, the utility model can be connected by the arrangement and lead of low voltage bushing, without increasing lead copper bar section, secondly, the resistance of a, b, c phase coil can be kept basically consistent.

The invention relates to the technical field of vortex spinning yarn processing, in particular to an automatic spinning detection device which comprises a yarn guiding structure and a matched butt joint structure, and the side end of the yarn guiding structure is in butt joint communication with the matched butt joint structure; the thread guiding structure is used for guiding and conveying vortex spinning threads, the vortex spinning threads are guided to a first butt joint pipe through a thread guiding wheel and are guided to the position of a second butt joint pipe by making contact with a contact wheel, and the positions of a matching frame and a guiding mechanism are changed through stretching and retracting of an electric control hydraulic rod, so that the guiding mechanism drives the broken vortex spinning threads to be in butt joint again; the contact wheel is matched with the butt joint structure and used for broken yarn detection work, vortex spinning yarn is guided through the upper end of the contact wheel, the contact wheel is extruded, the contact wheel moves on the spring rod, the pressure sensor carries out pressure detection, and when the yarn is broken, the pressure sensor cannot detect pressure, and alarm processing is carried out through the alarm. Through the arrangement of the structure, the purpose of conveniently processing vortex spinning yarns is achieved.

The utility model relates to the field of crystal resonators, and discloses a base lead structure for a crystal resonator, which comprises a resonator body, a sealing assembly mounted on the right side of the resonator body, and an anti-falling assembly mounted on the right side of the resonator body and comprising two pins. The left end of the pin is fixedly connected to the interior of the resonator body, a plurality of grooves are formed in the exterior of the pin, a plurality of barbs are arranged on the exterior of the pin, the sealing assembly comprises a base, the left side of the base is fixedly connected to the right side of the resonator body, paraffin is arranged on the right side of the base, the grooves are linearly distributed at equal intervals, and the barbs are arranged on the right side of the base. The barbs are distributed in a concentric circle at equal intervals, and the outer portions of the pins are arranged in the base in a sleeved mode. According to the utility model, through the cooperation of the grooves and the barbs, when the resonator is fixed on the circuit board through soldering tin, the contact area of the soldering tin is increased, and the resonator does not fall off due to insufficient soldering.

The utility model discloses a lead structure of an alternating current motor, which relates to the technical field of motors and comprises a lead box. A plurality of connector lugs are arranged on one side of the lead box, a plurality of wiring pipes are arranged on the other side of the lead box, a motor wiring shell is arranged on the outer sides of the connector lugs, sliding plates connected with the sliding plates in a sliding mode are arranged on the two sides of the motor wiring shell, the sliding plates are welded to the lead box, and then the sliding plates and the motor wiring shell are locked through bolts. According to the utility model, the two sides are connected through different connection modes, for the motor and one side of the lead box which are not normally opened, the connector lug is connected with the motor, a circuit is connected with a circuit in the lead box after penetrating through the protection wire pipe, and the circuit is in sliding connection with the sliding plate through the motor wiring shell and is locked, so that the circuit is completely protected on the inner side; the other side is fixed in the wiring tube through the line of the lead box, and the cable on the outer side is inserted into the wiring tube, so that the connection part can be protected at the inner side of the external wiring shell, and the sealing performance and the insulating performance are improved.

The utility model discloses a patch lead of an electronic component, which comprises a lead main body, at least one rectangular soldering lug is welded and fixed on the inner side wall of the lead main body, and the distance between the outer side wall of the soldering lug and the inner side wall of the lead main body is 0.07-0.15 mm. According to the utility model, the soldering lug is directly welded and fixed on the inner side wall of the lead, so that the size and the position of the soldering lug are fixed, a uniform tin layer of which the thickness tolerance is less than or equal to + / -0.05 mm is just formed between the lead and the component main body when the lead is welded with the component main body, and the lead and the component main body are firmly combined into a whole; therefore, the assembly quality of the electronic component is ensured. Moreover, after the lead structure is adopted, a welding machine can be adopted to weld the lead and the component main body, so that the processing efficiency is improved, and the stability of the welding quality is ensured.

The utility model discloses a fan motor lead structure, which comprises a motor body, one side of the motor body is provided with a wire passing hole for a lead to pass through, and the fan motor lead structure is characterized in that a wire clamp is detachably inserted in the wire passing hole, and the outer side of the motor body is in threaded connection with a pressing sleeve capable of abutting against the wire clamp; wherein the wire clamp comprises a wire protecting lantern ring and a plurality of clamping pieces, the plurality of clamping pieces are distributed on one side of the wire protecting lantern ring at intervals along the circumference, the clamping pieces can perform elastic deformation movement relative to the wire protecting lantern ring, a clamping area is formed among the plurality of clamping pieces, and inclined grooves are formed in the sides, deviating from each other, of the plurality of clamping pieces in an inwards concave mode. The wire passing hole is provided with a plurality of protruding parts at intervals along the circumference, the protruding parts and the inclined grooves are in one-to-one correspondence, embedded and matched, and the protruding parts can abut against the inclined grooves so that the clamping pieces can deform to be clamped on the lead.

The utility model provides a N pole external wire structure of leakage circuit breaker. Mainly solve the current leakage circuit breaker's conductive plate and current transformer wire do not isolate the problem. Its characterized in be further including conductive plate (7), with second wire (12) between the connection of conductive sheet, one end is used for external wire, baffle (6) is detachably installed in the shell, the upper end surface of baffle is equipped with the wire slot (61) for the first wire passing, and the wire board is located below the baffle. The utility model provides a N pole external wire structure of leakage circuit breaker, and the wire of external conductive plate and current transformer is separated through baffle, and use is safer.

The invention relates to the technical field of aero-engine cables, in particular to a single-core double-lead leading-out method of a shielded conductor for an aero-engine. The method comprises the following steps: stripping a wire outer sheath to expose a shielding layer, vertically attaching and fixing a first lead to the shielding layer, and spirally winding a second lead on the shielding layer and the first lead to form a binding structure; silver-lead solder containing 72% of Ag and 28% of Pb is adopted for welding at the temperature of 300 + / -10 DEG C, and the solder permeates into gaps; and finally, epoxy resin insulation packaging and thermal shrinkage reinforcement are carried out. According to the technical scheme, the applied double-lead structure enhances the mechanical strength and the anti-vibration and anti-falling capability in a vertical attaching and spiral winding mode; the silver-lead solder reduces the transmission loss of high-frequency signals and improves the electromagnetic shielding performance; the welding process is concentrated, operation is simplified, one-by-one welding is avoided, and efficiency is improved. The method is suitable for reliably leading out the shielded conductor of an aero-engine under severe working conditions.

The utility model discloses an electric power iron tower grounding down lead structure, which comprises a grounding body, a sliding tube, a protection tube and flat steel, the sliding tube is fixedly arranged on the upper surface of the grounding body, a first lower lead is fixedly arranged in the upper end of the protection tube, a second lower lead is fixedly arranged in the lower end of the protection tube, and the flat steel is arranged in the first lower lead. The upper end of the first lower lead is fixedly provided with flat steel, and the surface, close to the lower end, of the protection tube is movably sleeved with a locking piece. According to the grounding downlead structure of the electric power tower, the locking piece is pulled up, so that the insertion rod of the locking piece moves upwards, and the spring is stretched when the locking piece is pulled upwards, so that after the fixing cap is installed, the external force for pulling the locking piece is loosened, and the spring downwards pulls the lantern ring of the locking piece, so that the locking piece descends, and the grounding downlead structure of the electric power tower is fixed. The locking piece is inserted into the positioning groove of the fixing cap until the inserting rod of the locking piece is inserted into the positioning groove of the fixing cap, so that the fixing cap can be limited and is prevented from being accidentally rotated and loosened, and the stability of connection between the second lower lead and the sliding pipe can be guaranteed.

An example lead-frame package, a method of manufacturing a lead-frame package, and an electrical system comprising a lead-frame package with improved conductive lead structure are provided. An example lead-frame package includes a semiconductor IC thermally coupled to a die pad. Molding material encloses the semiconductor IC defining a perimeter of the lead-frame package. A conductive lead is electrically connected to the semiconductor IC and exposed at a surface of the lead-frame package, the conductive lead having a proximal end and a distal end. The distal end of the conductive lead extends beyond the perimeter of the lead-frame package, the distal end bent vertically such that a solder wettable surface of the conductive lead is exposed in a lateral direction. The molding material further insulates the conductive lead from the die pad. A conductive lead recess is defined between the proximal end of the conductive lead and the die pad.

The utility model discloses a multi-combination multi-functional atomization assembly with a double-mesh three-lead structure, which comprises a steel pipe, oil guide cotton in sliding connection with the steel pipe is arranged in the steel pipe, the left end of the steel pipe is fixedly connected with a silica gel cover, the right end of the steel pipe is fixedly connected with a fixed gear, one side of the steel pipe is provided with a motor, and the other side of the steel pipe is provided with a fixed gear. The tail end of an output shaft of the motor is fixedly connected with a threaded rod, the threaded rod penetrates through the fixed gear and is rotationally connected with the fixed gear, the threaded rod penetrates through the oil guide cotton and is in threaded connection with the oil guide cotton, the threaded rod penetrates through the silica gel cover and is rotationally connected with the silica gel cover, and a heating mesh fixedly connected with the fixed gear is arranged on the fixed gear in a penetrating mode. And the heating mesh is positioned in the oil guide cotton and is in sliding connection with the oil guide cotton. The oil guide cotton can move on the heating mesh, different positions of the oil guide cotton can be heated, the oil guide cotton can be heated evenly, the situation of dry burning caused by local heating is avoided, the service life of the device is prolonged, and good taste is guaranteed.

The utility model discloses a cable leading device for an electric appliance cabinet, which comprises an H-shaped back seat and right-angle seats welded on the outer walls of the left side and the right side of the H-shaped back seat, the right-angle seats are bolted with the electric appliance cabinet, and a double-roller cable inlet structure used for assisting cables and reducing friction force is arranged in the H-shaped back seat. A hollowed-out part is arranged at the center of the surface of the H-shaped back seat, and a V-opening wire leading structure is arranged on the outer wall of the side, away from the double-roller wire inlet structure, of the right-angle seat. According to the utility model, the contact area and friction force between the cable and the cabinet hole are reduced, so that the integrity of the cable is effectively protected, the service life of the cable is prolonged, when the cable passes through the V-opening lead structure, the V-opening lead structure can keep the cable at a stable position, and the cable is prevented from being twisted or bent in the lead process.

The invention relates to an electronic device with lead insulation. An electronic device (100) includes a lead (109) with a first portion (115) extending outwardly from a package structure (108) and coated with a dielectric film (114) extending to a side (103, 104) of the package structure (108), and an uncoated second portion (116) extending from the first portion (115) to an end of the lead (109). A method (200) includes forming (206) a package structure (108) to enclose an inner portion (118) of a lead structure (109) and coating (214) an outer first portion (115) of the lead structure (109) with a dielectric film (114) extending to one side (103, 104) of the package structure (108) and uncoating an outer second portion (116) of the lead structure.

The utility model discloses an improved foundation pit elevation guiding and measuring structure which comprises a guiding and measuring scale and a guiding and measuring supporting assembly keeping the guiding and measuring scale vertical, the bottom of the guiding and measuring scale is connected with a balance weight ball, the guiding and measuring supporting assembly comprises a spherical sleeve, an annular base, an internal thread base and a positioning rod, and the spherical sleeve is movably connected into the annular base. The foundation pit elevation guiding and measuring device has the advantages that when the foundation pit elevation guiding and measuring device is used for guiding and measuring the elevation of a foundation pit, the spherical sleeve on the guiding and measuring supporting assembly can freely slide in the annular base, the self weight of the guiding and measuring ruler matched with the balance weight ball body is reasonably utilized, and the foundation pit elevation guiding and measuring device can be used for guiding and measuring the elevation of the foundation pit. The guiding and measuring scale can be automatically erected, time and labor are saved, the vertical precision is high, and therefore the foundation pit elevation guiding and measuring precision can be effectively improved.