65results about How to "Improve connection fastness" patented technology

The invention relates to a double-tool-magazine machining center. The double-tool-magazine machining center is characterized in that the double-tool-magazine machining center comprises a milling machine body, the milling machine body is provided with a Y-direction linear rail, a Y-direction screw and a standing column, wherein the Y-direction linear rail is provided with a cross slide plate, the lower end of the cross slide plate is matched with the Y-direction screw, the Y-direction screw is driven to rotate by power, the cross slide plate is provided with an X-direction linear rail and an X-direction screw, a working table is arranged on the X-direction linear rail, the lower end of the working table is matched with the X-direction screw, the X-direction screw is driven to rotate by power, a workpiece is arranged on the working table, a standing column screw is arranged in the standing column and provided with a lifting block, the front side of the lifting block is connected with a spindle box, a spindle servo motor and 4-8 spindles are arranged on the spindle box, the output shaft of the spindle servo motor is connected with an upper spindle belt wheel and a lower spindle belt wheel, a spindle driven wheel is arranged on each spindle, the upper spindle belt wheel and the lower spindle belt wheel drive 2-4 spindle driven wheels to rotate through spindle belts, a left tool magazine is arranged on the left of the standing column, a right tool magazine is arranged on the right of the standing column, and each of the left tool magazine and the right tool magazine comprises a transmission conveying device, a milling tool storage and fixing device and a milling tool clamping and conveying device.

The invention relates to an internal and external molded wood-bamboo hollow plate with the characteristics of high strength, remarkably improved swelling rate of water absorption, good sound isolation and heat insulation effect, and high decorating effect of arc molding on the surface. According to the technical scheme of the invention, the internal and external molded wood-bamboo hollow plate comprises a hollow plate body, wherein the hollow plate body is formed by overlapping and bonding a plurality of chip units, each chip unit is formed by extruding and bonding wood-bamboo chips and an adhesive; the length and height of each chip unit are identical to the width and thickness of the hollow plate respectively; and a plurality of holes are formed in the hollow plate body. The hollow plate is characterized in that at least one row of notches and bumps are staggered on each chip unit, and all notches and bumps between two adjacent chip units are embedded one another and bonded to form the molded hollow plate. The method for manufacturing the internal and external molded wood-bamboo hollow plate comprises the following steps: 1) preparing materials; 2) drying; 3) screening; 4) applying the adhesive; and 5) extruding and molding.

The invention discloses a plastic decorative wallboard which is characterized in that the outer surface of the wallboard obtained by injection molding is provided with artificial brick-shaped or artificial marble-shaped lugs and concave trenches which are uniformly distributed; the upper edge of the wallboard is provided with a hanger and a slot; a fixing hole is formed in the hanger; the lower edge of the wallboard is provided with a plug-in card and an installing spacing fillet; the plug-in card and the slot are matched; the installing spacing fillet is inserted in the fixing hole; the fixing hole is fixed with a wall body through a fastening piece; the edges of two ends of the wallboard are provided with a left inserting interface, a right inserting interface or / and a left connectingplate, and a right connecting plate; and the left inserting interface, the right inserting interface, the left connecting plate, and the right connecting plate are provided with connection straps andconnecting grooves. The outer surface of each wallboard is provided with a plurality of to tens of artificial brick-shaped lugs or artificial marble-shaped lugs, and the circumferences of the lugs are provided with the concave trenches. The wallboard is rough and generous, has natural beauty, is water-proof, moisture-proof and fadeless, can be washed with water and wiped by cloth, and is very beautiful as an inner wall or an external wall. The upper part, lower part, left part and right part of each wallboard are respectively provided with various coadjacent structures; and each wallboard is combined with various structures such as a groove, a mouth, a plate, and the like through a piece, and then fixed through a fastening piece. The plastic decorative wallboard is convenient to operate, and is firm.

An anti-theft type milk powder tin turning cover with a multifunctional powder spoon comprises a cover base and an upper cover. The cover base and the upper cover are connected through a connecting sheet. The cover base and the opening portion of a tin body are connected in a sealed mode. A sealing aluminum film is arranged in an inner opening of the tin body. The turning cover is provided with the powder spoon inside. The powder spoon comprises a spoon handle. One end of the spoon handle is connected with a spoon body and the other end of the spoon handler is provided with a hook. The head portion of the hook is manufactured into a sharp edge used for cutting the sealing aluminum film. A protruding ring is arranged in the inner opening of the tin body and matched with an inner circular cover made of metal. The hook is used for hooking the inner cover up. A manually-operated sheet of the turning cover is arranged on the outer wall of the upper cover. A clamping board is arranged below the manually-operated sheet. An anti-theft ring is arranged on the outer wall of the cover base. A connecting pin is arranged below the anti-theft ring. The two sides of the anti-theft ring are provided with snapping teeth. The snapping teeth and the connecting pin are respectively connected with the cover base. The anti-theft ring is embedded in the portion between the manually-operated sheet and the clamping board.

The invention relates to the field of die holders, in particular to a rolling ball type die holder. The rolling ball type die holder comprises an upper die holder body and a lower die holder body, and is characterized in that the upper end of the upper die holder body is provided with a pressing block, two guide pillars are arranged between the upper die holder body and the lower die holder body, the upper portion of each guide pillar is sleeved with a guide sleeve, a retainer is arranged between each guide sleeve and the corresponding guide pillar, each retainer is connected with the corresponding guide pillar, rolling balls are arranged in each retainer, the side faces of the rolling balls make contact with the outer surfaces of the corresponding guide pillars and the inner surfaces of the corresponding guide sleeves, the lower ends of the rolling balls in each retainer are provided with a spring, the lower ends of the springs make contact with the upper surface of the lower die holder body, the upper ends of the springs make contact with the lower ends of the corresponding retainers, a groove is formed in the outer surface of each guide sleeve and located at the lower end of the upper die holder body, the lower end of the upper die holder body is provided with a plurality of pressing plates, each pressing plate is provided with a boss, the bosses are arranged in the grooves, and the pressing plates are connected with the upper die holder body and the lower die holder body through screws. The rolling type die holder is convenient to use and long in service life, and the guide pillars and the guide sleeves are convenient to replace.

The invention relates to the technical field of fixtures, in particular to an expansion fixture. The expansion fixture is characterized by comprising a fixture body, a guide column, a receding spring, expansion blocks, a taper sleeve and an abutting sleeve. A groove is formed in the front end of the fixture body, a protrusion is arranged in the groove, and the protrusion is connected with the groove through a spring; a cavity is formed behind the fixture body, the guide column is sleeved with the fixture body, and the guide column is sleeved with the receding spring and the taper sleeve; one end of the receding spring is arranged on the inner wall of the cavity of the fixture body, and the other end of the receding spring is arranged at the front end of the taper sleeve; the expansion blocks are arranged on the outer side of the taper sleeve and evenly inserted in the fixture body; the abutting sleeve is arranged at the rear end of the taper sleeve, and the front of the abutting sleeve is connected with the rear of the taper sleeve; receding elastic rings are arranged in the expansion blocks. The expansion fixture performs clamping conveniently and can reduce the resonance caused by clamping in the machining process and accelerate machining progress; besides, the expansion fixture is simple in structure and low in production cost.

The invention provides an uplift-resistant connecting piece for fixing a steel structure. The uplift-resistant connecting piece for fixing the steel structure comprises a connecting base, a vertical connecting plate and side reinforcing ribs, wherein the vertical connecting plate is vertically connected with the connecting base; screw holes are formed on the connecting base and the vertical connecting plate; two side reinforcing ribs, which are respectively arranged on the two sides of the connecting portion of the vertical connecting plate and the connecting base, are available; connecting modes between the vertical connecting plate and the connecting base and between the side reinforcing ribs and the vertical connecting plate as well as the connecting base are welding; and the vertical connecting plate, the connecting base and the side reinforcing ribs can be also machined into an integrated structural piece. While the uplift-resistant connecting piece for fixing the steel structure, provided by the invention, is compared with the prior art, the connection stress mode while the wall body is connected with the foundation is improved, the uplift force is born on a vertical framework, the stress situation, in particular stress situations at the openings and corners of the door window, is obviously better than the stress situation at the framework of the wall body so that the connection firmness between the wall body and the foundation is largely enhanced.

The invention relates to a lithium-ion power battery which comprises a positive post terminal (1), a negative post terminal (2) and connecting pieces (3). Tightening nuts (11) are arranged on the positive pole column (1) and the negative pole column (2) respectively; central holes (16) are formed in the positive pole column (1) and the negative pole column (2) respectively; rigid studs (10) are arranged in the central holes (16); the positive pole column (1) and the negative pole column (2) are respectively connected with the rigid studs (10) by connecting pins (12); compression nuts (4) are arranged on the rigid studs (10); and the connecting pieces (3) are pressed against and fixed on the tightening nuts (11) by the pressing nuts (4). The lithium-ion power battery improves the connection fastness between the positive and negative pole columns (1 and 2) and the connecting pieces (3), the internal resistance of the battery is reduced, and the heavy load discharge performance of the lithium-ion power battery is improved. Therefore, the whole battery is more suitable for vehicle-mounted vibrating occasions and the like.

The invention discloses a novel location connecting piece which comprises a clamping tenon body, and clamping tenon parts arranged on the clamping tenon body and used for clamping. The invention further discloses a location connecting assembly formed by assembling the novel location connecting pieces. The novel location connecting piece and the location connecting assembly are suitable for connection between a wooden floor and a cement ground or a wooden keel, and between a weatherboarding, a skirting board, a top borderline, a waistline, borderlines of a door frame and a window frame or sleeves of the door frame and the window frame, and a wall; quick mounting of a wooden profile is achieved; the wooden profile can be dismounted in a perfect condition; consumption of a wood resource is reduced; and the connecting piece is hidden at the back of the wooden profile completely, so that the quality and an decorative effect of interior decoration can be improved greatly.

The invention discloses a connecting structure for a glass plate and a wire rope of a cable mesh point-supported glass curtain wall, and relates to the technical field of building glass curtain wall construction. The connecting structure comprises first ropes and second ropes, wherein the first ropes and the second ropes mutually intersect in a cross mode. Stainless steel inner clamping plates and stainless steel fixtures are respectively arranged outside the positions where the first ropes intersect with the second ropes, and are connected through bolt sets, wherein each bolt set is arranged between a first rope and an adjacent second rope. Four glass plates are clamped by stainless steel outer clamping plates matched with the stainless steel inner clamping plates at the outer ends of the stainless steel inner clamping plates. Because the glass plates are fixed on nodes of cable trusses through the structure, the wall can be conveniently installed, connecting fastness between the glass plates and the cable trusses can be improved, and the formed glass curtain wall can be effectively controlled to have considerable flatness.

The invention relates to an integrated wall surface system, and belongs to the technical field of building construction. The system comprises a steel column, an inner plate, heat-insulation cotton, wall beams, a wallboard, and accessories. The wallboard is installed on the outer side of the wall beams through the accessories. The wall beams, the heat-insulation cotton, and the inner plates are installed in sequence. The inner plate is fixed through the steel column. The wallboard comprises a top board, a bottom board, and a plurality of intermediate boards installed between the top board and the bottom board. The top board is formed by a first fixing end and a first fastening end. The bottom board is formed by a second fastening end and a second fixing end. The intermediate board is formed by a head end, a body, and a tail end. The body is in a wavy shape. Between adjacent intermediate boards, the tail end of a previous intermediate board is connected with the head end of the next intermediate board in a cooperated manner, and the intermediate boards are connected with the first fastening end of the top board on the top ends, and the bottom ends of the intermediate boards are connected with the second fastening end of the bottom board in a cooperated manner. The integrated wall surface system is applied in building of shingles, and is advantaged by convenient installation, fast and convenient building, high connection fastness, diverse models, and good practicality.

The invention discloses a mixed type spinning plate which comprises a plate body, wherein a plurality of irregularly shaped spinning holes are formed in the plate body. The irregularly shaped spinning holes include a three-blade type spinning hole, a tri-C shaped spinning hole, a triangular spinning hole, a straight spinning hole, a circular spinning hole and a cross shaped spinning hole. Through the arrangement, the spinning plate with the spinning holes of six different section shapes is adopted in a processing process, then fiber filaments of different section shapes and limiting filaments of different shapes can be sprayed out and the section shapes are free from conformity, so that a plurality of gaps are formed between the fibers when the fibers are twisted into bundles. When used for manufacturing simulated wool, the simulated wool is high in dispersity, good in hand feel, and high in glossiness. The invention also discloses a manufacturing technology of the mixed type spinning plate.

The invention relates to a lithium ion battery for an automobile. At present, no lithium ion battery with reasonable structural design and stable performance for the automobile exists. The lithium ion battery comprises a battery core, an upper cover, an anode terminal, a cathode terminal and a shell, and is characterized by further comprising an anode conductive metal plate, a cathode conductive metal plate, an anode cover plate, a cathode cover plate, a temperature detection guard plate and a metal isolation groove, wherein the anode terminal comprises an anode terminal body, an anode boss and an anode temperature measuring head; the anode conductive metal plate is fixed on the battery core anode plug of the battery core; the anode terminal body is fixed on the anode conductive metal plate; the cathode terminal comprises a cathode terminal body, a cathode boss and a cathode temperature measuring head; tThe cathode conductive metal plate is fixed on the battery core cathode lug of the battery core; the cathode terminal body is fixed on the cathode conductive metal plate; the wall faces of the shell are provided with multiple rows of heat-dissipating holes; and the inner walls of the wall faces, provided with the heat-dissipating holes, of the shell are provided with multiple heat-conducting grooves. The lithium ion battery for the automobile has the advantages of reasonable structural design, good heat dissipation and stable performance.

The invention discloses a shoemaking method of waterproof and breathable shoes. The shoemaking method comprises the following steps of S1, material selection, wherein one or more of TPR, EVA, U, PU air cushions, RB rubber soles and the like are selected for outsoles, non-woven fabric, waterproof film, 4MM foam and 28 GT / C are selected for shoe vamps, or a screen cloth film illumination technologyis adopted, generally, the waterproof film is 0.03 cm in thickness, and activated carbon fabric is selected for the surface layers of insoles of the shoes; S2, pretreatment, wherein selected materialsare placed in a 3% oxidizing agent solution at 75-85 DEG C to be soaked for 15 min, then taken out to be washed, and dried under the condition of 50 DEG C. Compared with other making technologies, the procedures are simple, the technology is mature, the surface of the waterproof film can be protected against damage, and the moisture absorption and sweat releasing effects of the waterproof and breathable shoes are effectively improved; through multiple times of gluing and pressing, the connecting fastness of products can be effectively improved, so that the ungluing phenomenon of the productsis avoided, and the using quality of the waterproof and breathable shoes is greatly improved.

Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil (14) is preferably a freestanding multilayered foil structure made up of alternating layers (16, 18) selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually an environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials. If no joining material is used, the foil reaction supplies heat directly to at least two bulk materials, melting a portion of each bulk, which upon cooling, form a strong bond. Additionally, the foil (14) may be designed with openings that allow extrusion of the joining (or bulk) material through the foil to enhance bonding.

A movably-connected detachable electric tricycle frame comprises a frame body, wherein on the frame body, bent pipes on two sides are respectively formed by a flat pipe, a front vertical pipe and a rear oblique pipe, the rear parts of the bent pipes on the two sides are connected by an arc-shaped corner, the front parts of the bent pipes on the two sides are connected by a front cross rod which is connected with a headstock sleeve, the lower part of the headstock sleeve is connected with a middle vertical rod, the middle vertical rod is connected with the bent pipes on the two sides through a first lower cross rod, the flat pipes of the bent pipes on the two sides are simultaneously provided with a second lower cross rod and a third lower cross rod, a first vertical rod and a second vertical rod are arranged between the first and second lower cross rods, a front seat frame is arranged on the first and second vertical rods, a rear seat frame is arranged on the rear oblique pipes and the arc-shaped corner, the front vertical pipes and the front cross rod are simultaneously connected with a left tricycle door support rod and a right tricycle door support rod, the left and right tricycle door support rods are respectively connected with a left tricycle door frame and a right tricycle door frame, the upper parts of the front vertical pipes are connected with the front part of a ceiling support, the rear part of the ceiling support is connected with a left rear upright and a right rear upright, movable connecting pieces are respectively arranged on the bent pipes at the two sides, the front cross rod, the left and right tricycle door support rods, the left and right tricycle door frames, the left and right rear uprights and the ceiling support, and each movable connecting piece is connected and fixed through a fastening piece.

The invention relates to garbage transfer equipment, in particular to a vehicle-mounted garbage transfer operation case structure. The invention aims at providing a non-return garbage transfer case which has simple structure and can effectively prevent garbage at the garbage transfer case door from scattering. The non-return garbage transfer case is provided with a case body, wherein the bottom of the case body is provided with a roller which is convenient to move, one end of the case body is provided with a case door, the door frame of the case body close to one end of the case door is provided with a non-return mechanism, the non-return mechanism is in a through rectangular solid barrel shape, side plates are arranged at the left side and the right side of the non-return mechanism, an upper baffle and a lower baffle are respectively arranged at the upper side and the lower side of the non-return mechanism, and one end face of the non-return mechanism is connected with the door frame of the case body. In the garbage transfer case provided by the invention, the non-return mechanism is arranged at a garbage inlet, the through rectangular solid barrel of the non-return mechanism forms a channel, when a compressing device is utilized to compress garbage, the garbage enters into the case body by virtue of the channel of the non-return mechanism, when the case body is full of the garbage, the garbage can not be scattered at the case door owning to the channel of the non-return mechanism, and the garbage can not be scattered outside the case body.

The invention belongs to the technical field of trays and relates to a high-strength plastic tray containing a reinforced plastic framework insert. A layer of coating layer is formed through injection molding on the outer surface of the reinforced plastic framework insert which is formed through injection molding and adaptive to a tray bearing structure, and the high-strength plastic tray containing the reinforced plastic framework insert is formed. The hardness of the coating layer is smaller than the hardness of the reinforced plastic framework insert. The high-strength plastic tray has the advantages of being high in weight bearing capacity, high in strength, good in weather resistance, wide in application field, long in service life, low in cost, convenient to recycle and suitable for various types of bearing trays.

The invention discloses an ellipsoid type reinforcing steel bar connecting piece. The ellipsoid type reinforcing steel bar connecting piece comprises a lock head and a lock body, the lock head comprises an upper sleeve, a bolt hole is formed in the upper portion of the upper sleeve, an empty groove is formed in the upper sleeve, the diameter of an upper ellipsoidal empty groove is slightly largerthan the diameter of a middle cylindrical empty groove, two semicircular steel discs are arranged on the periphery of the middle cylindrical empty groove, springs are arranged at the outer side ends of the semicircular steel discs, and circular steel discs are connected with the upper sleeve through the springs. The lock body comprises a lower sleeve and a cylinder body, a bolt hole is formed in the lower sleeve, and the cylinder body is composed of an upper ellipsoidal cylinder body, a middle cylindrical cylinder body and a lower cylinder body. The diameter of the upper ellipsoidal cylinder body is slightly larger than the diameter of the middle cylindrical cylinder body, and the cylinder body is matched with the shape of the empty groove. The construction is easy to operate, the connection between reinforcing steel bars is realized by using the counter-acting force and locking and fastening force between the lock body and the lock head and the connection of the bolt holes and threaded reinforcing steel bars, and connection fastness is improved.

The invention discloses a plastic decorative wallboard which is characterized in that the outer surface of the wallboard obtained by injection molding is provided with artificial brick-shaped or artificial marble-shaped lugs and concave trenches which are uniformly distributed; the upper edge of the wallboard is provided with a hanger and a slot; a fixing hole is formed in the hanger; the lower edge of the wallboard is provided with a plug-in card and an installing spacing fillet; the plug-in card and the slot are matched; the installing spacing fillet is inserted in the fixing hole; the fixing hole is fixed with a wall body through a fastening piece; the edges of two ends of the wallboard are provided with a left inserting interface, a right inserting interface or / and a left connectingplate, and a right connecting plate; and the left inserting interface, the right inserting interface, the left connecting plate, and the right connecting plate are provided with connection straps andconnecting grooves. The outer surface of each wallboard is provided with a plurality of to tens of artificial brick-shaped lugs or artificial marble-shaped lugs, and the circumferences of the lugs are provided with the concave trenches. The wallboard is rough and generous, has natural beauty, is water-proof, moisture-proof and fadeless, can be washed with water and wiped by cloth, and is very beautiful as an inner wall or an external wall. The upper part, lower part, left part and right part of each wallboard are respectively provided with various coadjacent structures; and each wallboard is combined with various structures such as a groove, a mouth, a plate, and the like through a piece, and then fixed through a fastening piece. The plastic decorative wallboard is convenient to operate, and is firm.

The invention relates to an extrusion head for manufacturing a wood and bamboo hollow board formed internally and externally in an extrusion forming mode, and aims to provide an extrusion head for manufacturing a wood and bamboo hollow board which is high in static bending strength, insusceptible to longitudinal cracking and high in the performance of a longitudinal water absorption expansion ratio, and the extrusion head is favorable for prolonging the service life of a die. In the technical scheme, in the extrusion head for the wood and bamboo formed hollow board extruder has a plurality of slide holes which are in sliding fit with a core column in a die pressing gap. The extrusion head is characterized in that: at least one row of recesses and bulges which are arranged mutually in a staggered mode are distributed on the end face of the extrusion head; projections, which are perpendicular to the upper surface of the extrusion head, of the recesses and the bulges are in a trapezoid or an arc shape; two rows or more than two rows of recesses and bulges which are arranged transversely are distributed on the end face of the extrusion head; the same row of recesses and bulges are arranged mutually in a staggered mode, and the recesses and the bulges are formed at positions of aligning from top down between the two adjacent rows; and a plurality of long slots which are parallel to axes of the slide holes are formed on wall parts of the slide holes in the extrusion head.

The invention relates to the technical field of shoe materials, in particular to a preparation method of an ultra-light shoe sole with a hydrogen explosion structure, the shoe sole and sneakers. The ultra-light shoe sole is prepared from the following raw materials in parts by mass: 60-70 parts of a polyurethane prepolymer, 3.5-7.5 parts of whiskers, 2.5-3.5 parts of a chain extender, 14-24 parts of antibacterial polyamide, 7-12 parts of a polysiloxane-polyimide block copolymer, 1.5-2.1 parts of a nucleating agent and 1.5-1.8 parts of a cross-linking agent. The TPU and the PA are compounded, the composite material is prepared through a supercritical foaming process, and the composite material is mainly applied to a midsole of a shoe sole. The mechanical strength and toughness of the composite material are further enhanced by adding whiskers into the TPU, the shoe sole has certain antibacterial property by adding antibacterial modified PA, and the sneakers with the shoe sole are excellent in durability and elasticity.

An oil gun, which contains gun body including upper and lower section, the upper is the joint injection rod with nozzle in head, oil filled piston cylinder in middle section with piston and reset spring, the lower section is connection cover connected with oil tank having suction pipe, screw plug set in open of oil filled cylinder, stop ring, seal ring for preventing the oil from leakage when the manual wrench turns to press the piston making oil to bottom of piston cylinder.

The invention discloses a method for producing a bundled bamboo broom. The method comprises the following steps: 1, material preparation, specifically, 1), cutting original bamboos, 2), breaking materials, 3), fragmenting the materials, specifically, cutting the bamboos into bamboo chips, 4), processing the surfaces of the bamboo chips by using a card machine, 5), drawing filaments, specifically, drawing the bamboo chips to make bamboo filaments, and 6), sending the bamboo filaments in a drying and disinfecting carbon drying machine and carbonizing the interior and exterior of the bamboo filaments; 2, sorting the bamboo filaments into one group or one bundle according to the size of the bamboo broom series, separately arranging and placing the bamboo filaments, and clamping the front end of the bamboo filaments placed together with a clamp; 3, making the clamped bamboo filaments into a required length by using an electric saw, meanwhile, also taking a bamboo rod and making the bamboo rod into a bamboo handle with the required length; and 4, inserting one end of the bamboo handle into the center of the rear end of the bamboo filaments, then winding at least one circle outside the rear end of the bamboo filaments by using a steel strip, installing an iron locking buckle, and tightening the steel strip until the bamboo filaments are firmly connected with the bamboo handle by using a steel belt packing machine.

The invention discloses a heating end and a heater. The heating end comprises a shell; a locking matching part is arranged behind the shell; the locking matching part comprises a locking neck and locking heads; the locking neck is a circular annular body which extends from the back part of the shell backwardly; the locking heads are multiple arc-shaped flanges which extend outwardly from the backpart of the outer side surface of the locking neck in the radial direction; the locking heads are uniformly distributed in the circumferential direction of the locking neck; the arc length of the locking heads is less than or equal to two times of the arc-shaped distance between two adjacent locking heads; the number of the locking heads is at least two; the number of the locking heads can be two,three or four; an opening is formed in the outer side of each locking head; and the opening is close to one end of each locking head. The heater comprises the heating end which is the abovementionedheating end. The connection firmness of the heating end can be greatly improved; an operator can hold a gun type electromagnetic heater by only one hand; and the heating end does not fall off easily,damage of the heating end caused by falling off can be avoided, and the heating end is very convenient to use.

The invention discloses a pluggable rainwater section, which comprises a rainwater tank, a rainwater binding node and a rainwater three-way joint, wherein the rainwater tank comprises a main body tank board; one side of the cross profile of the main body tank board is an equal-radius arc and upward connected with a straightly vertical board; guide convex ribs are manufactured on the inner wall ofthe main body tank board; the other side of the cross profile of the main body tank board is an involute variable-radius arc and upward connected with a small round tube; the rainwater binding node comprises a binding node board; a compound board is manufactured in the middle of the inner wall of the binding node board; insertion slots are formed between two sides of the compound board and the binding node board; convex sheets are manufactured on the compound board; a vertical board, a transversely folded board, a hooking board and a connection rib are manufactured at one end of the binding node board; the connection rib is connected with the convex sheets so as to form splicing holes; an open tube is manufactured at the other end of the binding node board; the rainwater three-way joint comprises a joint body; the joint body is downward connected with a rainwater falling port; clamping boards, clamping tendons and clamping slots are manufactured on the inner walls of two ends of the joint body; a straight board and a bent sheet which form a bayonet are manufactured on one side of the joint body; an open round hole is formed in the other side of the joint body; and a limiting bumping post is arranged in the open round hole.

The invention relates to a positioning connecting piece of wooden profiles for interior decoration. The positioning connecting piece comprises a connecting piece body, wherein a connecting plate is arranged on the body; a conjoined mortise and tenon group or tenon and mortise group is arranged on at least one end of the connecting plate, and a conjoined cylindrical tenon or mortise and tenon group / tenon and mortise group is arranged on the other end of the connecting plate; a side buckle is arranged on the outer side face of the cylindrical tenon; or a positioning plate is arranged on the body, a connecting surface is arranged on the positioning plate, and the connecting surface is a horizontal surface or a right-angled surface vertical to the vertical and horizontal direction or a right-angled surface vertical to the horizontal direction; a mortise and tenon group vertical to the connecting surface is arranged on the connecting piece body; and at least one pair screw holes for fixing is formed in the positioning plate. The positioning connecting piece is used for connection between a wood floor and a cement floor or a rough ground and between a baseboard, a skirtboard, a top side boundary, a belt course, a door and window side boundary or a door and window set and a wall body. The wooden profiles can be quickly installed and can be dismantled in an intact mode, and the timber resource consumption is reduced. The connecting piece is completely hidden in the back of the wooden profile, so that the quality of the interior decoration and the decoration effect are greatly increased.