97 results about "Plastic joining" patented technology

The utility model discloses a portable slipper which comprises a slipper upper board, a sliding groove is formed in the bottom of the interior of the slipper upper board, a first hinge rod is arranged in the sliding groove, and a second hinge rod is arranged at the bottom of the first hinge rod. Under the cooperation of the first hinge rod, the second hinge rod, the third hinge rod, the slipper lower board and the sliding groove, the slippers can be folded in the slipper storage process, then the length of the slippers is reduced, the slippers can be conveniently stored, the carrying difficulty is reduced, and meanwhile in the slipper using process, the slippers are convenient to carry. The position of the lower plate face of the slipper can be fixed, then the stability in the using process is guaranteed, the plastic connecting buckle is pulled out under the cooperation of the inserting groove, the elastic rope and the plastic connecting buckle, the two slippers can be conveniently connected together, and then the slippers can be directly taken and carried through the elastic rope in the carrying process. And hanging is also facilitated.

The invention relates to the technical field of air tightness detection, in particular to an air tightness detection method and system for a plastic pipe connecting piece, and the method comprises the steps: obtaining real-time pressure data and associated temperature data of the interior of a detected plastic connecting piece in an inflation and pressure maintaining process; inputting the real-time pressure data into a temperature and pressure coupling model for pressure value compensation correction to obtain a compensated pressure value only reflecting the leakage effect; performing time sequence change analysis on the compensated pressure value, and identifying and determining a starting time point when the pressure enters a stable state; extracting the dynamic attenuation characteristic of the compensated pressure value; and performing matching degree calculation on the dynamic attenuation characteristics and the reference model of the leakage-free basis behavior to generate an air tightness detection result of the plastic pipe connecting piece. According to the invention, the problem of interference of non-leakage factors such as environment temperature in air tightness detection is effectively solved, the inhibition capability of interference of non-leakage factors such as temperature is enhanced, and the accuracy and reliability of a detection result are improved.

A new Super High Tensile Strength Tape (SHTST) which delivers super high performance in strength and low elongation which can be used in a roof reinforcing and attaching system to aid in securing the roofing members and supporting walls to the building's foundation, so as to supplement and unify the roofing assembly and wall sections in resistance to lift-off, failure and destruction in high-wind, seismic and other destructive events. Said SHTST can also be used in applications for automotive and vehicular, for packaging, for industrial uses, for military applications and for any other application where significant reinforcing and unifying resistance to destructive forces is desired.

The invention discloses a goods shelf connecting device which comprises a first clamping assembly, a second clamping assembly and a bolt, the first clamping assembly comprises a fastener and a first plastic connecting piece which are connected with each other, the fastener is provided with a fixing hole, and the first plastic connecting piece is provided with a positioning groove; the second clamping assembly comprises a gasket and a second plastic connecting piece which are connected with each other, the gasket is provided with a mounting hole, the second plastic connecting piece is provided with a connecting hole and a positioning block, and the positioning groove is slidably connected with the positioning block in a matched mode; the bolts penetrate through the mounting holes, the connecting holes and the fixing holes and are in threaded connection with the fixing holes. Relative rotation of the fastener is limited through the first plastic connecting piece and the second plastic connecting piece, metal materials are saved, and machining is easy.

The utility model discloses an accurate positioning pressure riveting blanking device for luggage pull rod production, which comprises a rotating rack, the middle part of a top plate of the rotating rack is movably connected with a main rotating shaft through a bearing, the top end of the main rotating shaft extends out of the top surface of the top plate of the rotating rack and is fixedly provided with a rotating plate, and a plurality of through holes are formed in the edge part of the rotating plate; placing pipes are inserted into the corresponding through holes in a sleeved mode, and the outer side walls of the placing pipes are welded and fixed to the inner side walls of the corresponding through holes; a plastic connecting block, a gasket, a connecting rod and other parts needing to be machined can be placed on the corresponding placing pipes of the rotating disc, the parts are rotationally conveyed to the position below a riveting head at the riveting press for automatic riveting, after automatic riveting is completed, automatic rotating and moving-out are conducted, meanwhile, new parts on the placing pipes are moved to the position below the riveting head for riveting, and the production efficiency is greatly improved. Continuous machining can be achieved, the machining efficiency is greatly improved, moved-out products can be automatically pushed to achieve automatic discharging, the manual labor amount is greatly reduced, the using effect is good, and efficiency is high.

The utility model relates to the technical field of building water supply and drainage pipelines, in particular to an anti-condensation structure of a building water supply and drainage pipeline. Comprising a pipeline body, the outer side of the pipeline body is coated with a protective coating, the outer side of the pipeline body is sleeved with a heat preservation layer, a plastic connecting piece is installed on the outer side of the heat preservation layer, a heat insulation layer adheres to the lower portion of the plastic connecting piece, and damp-proof layers are arranged on the outer side of the plastic connecting piece and the outer side of the heat preservation layer correspondingly; and fixing bolts are inserted into the two sides of the plastic connecting piece. The convex blocks arranged on the inner sides of the heat insulation layers increase friction force between the heat insulation layers and the heat preservation layers, meanwhile, the convex blocks in the middles of the plastic connecting pieces can fill the connecting positions of the heat preservation layers, and the sealing performance of the connecting positions of the heat preservation layers can be effectively guaranteed in the mode. And therefore, water vapor invasion caused by untight lap joint at the joint of the heat preservation layers is effectively avoided, and the influence on the pipeline and the sanitation problem are reduced.

The utility model belongs to the technical field of pipes, and particularly relates to a connecting piece for a metal pipe and a plastic pipe, which comprises a connecting pipe and a tubular metal joint, one end of the connecting pipe is coaxially connected with the plastic pipe, the other end of the connecting pipe is inserted into the metal connector, and the outer wall of the connecting pipe is attached to the inner wall of the metal connector. The metal joint is detachably connected with the metal pipe; the connecting pipe comprises a plastic connecting part coaxially connected with the plastic pipe and a metal connecting part coaxially connected with the metal joint, and the plastic connecting part is aligned to and fixedly connected with a pipe orifice of the plastic pipe; the outer wall of the metal connecting part is attached to the inner wall of the metal connector. The nominal diameter of the plastic pipe is smaller than that of the metal pipe; the connector distance between the metal pipe and the plastic pipe is equal to the length of the connecting piece. The length of the connecting piece can be adjusted according to the interface distance between the metal pipe and the plastic pipe; and variable-diameter connection of the metal pipe and the plastic pipe can be realized, and the mounting space of a variable-diameter pipe fitting is saved.

The utility model discloses a PVC plastic connecting pipe, and particularly relates to the technical field of PVC plastic pipes, the PVC plastic connecting pipe comprises a first pipe body, the outer wall of the first pipe body is fixedly connected with a sealing adjusting structure, the sealing adjusting structure is arranged on the inner wall of a connecting ring, the outer wall of the connecting ring is connected with an adjusting ring through a bearing, and the outer wall of the adjusting ring is provided with a friction block. The inner wall of the adjusting ring is in threaded connection with a threaded sleeve, the other side of the threaded sleeve is fixedly connected with a connecting pipe body, and a sealing ring is installed on the inner wall of the fixing ring. According to the PVC plastic connecting pipe, positioning, sealing and fixing functions are integrated, a plurality of independent components needed in a traditional connecting mode are reduced, the pipeline connecting structure is simplified, meanwhile, the problem that in the traditional connecting mode, the possibility that fault points are increased due to the existence of the multiple components is solved, and the service life of the connecting pipe is prolonged. And through the integrated design, the matching problem among the components is further reduced, and the fault risk is reduced.

The utility model discloses an automobile seat cushion portion spring frame convenient to install, which belongs to the technical field of automobile cushions and comprises a first connecting frame, a left hook is arranged on the side edge of the first connecting frame, a first metal steel bar is arranged at the other end of the left hook, and a plastic connecting piece is arranged at the lower end of the first metal steel bar. The metal steel bar I and the plastic connecting piece are fixedly connected through a metal steel bar I fixing mechanism, the metal steel bar I and the plastic connecting piece can be connected and fixed more firmly through the arrangement of the metal steel bar I fixing mechanism, and after fixing, the metal steel bar I and the plastic connecting piece can be fixed more firmly. And if the first metal reinforcing steel bar is seriously deformed, the first metal reinforcing steel bar can be conveniently disassembled, through the arrangement of the second metal reinforcing steel bar fixing mechanism, the second metal reinforcing steel bar and the connecting plate can be more firmly connected and fixed through the arrangement of the structure, and subsequent disassembly of the second metal reinforcing steel bar and the connecting plate is also facilitated through the arrangement of the structure.

The utility model discloses a heat preservation and insulation window frame structure, and aims to provide a window frame structure which has the advantages of heat preservation and heat dissipation, simple structure, low cost and easiness in installation. The structure comprises a heat preservation type indoor frame assembly, a heat dissipation type outdoor frame assembly and an inner and outer frame reinforced heat insulation connecting assembly. The indoor frame assembly comprises an indoor window frame and a window frame track, and the outdoor frame assembly comprises an outdoor window frame, a window frame track and outdoor frame cooling fins. The inner and outer frame reinforcing heat insulation connecting assembly is composed of an engineering plastic connecting piece, an engineering plastic connecting piece T-shaped part, a connecting piece reinforcing frame and an engineering plastic reinforcing T-shaped part. According to the structure, through the hollow design of the indoor window frame and the outdoor window frame and the use of the engineering plastic connecting pieces, heat conduction is effectively reduced, and meanwhile the heat dissipation performance is enhanced through the design of the outdoor frame cooling fins. In addition, the structure has the advantages of high strength, good durability, light weight, thermal insulation and the like.

The utility model relates to the technical field of plastic connecting pieces, and discloses a table leg plastic connecting piece which comprises an installation base, an installation block is fixedly installed on the outer side of the installation base, a sliding groove is formed in the inner side of the installation base, a sliding block is installed on the inner side of the installation base in a sliding mode, and a hinge is fixedly installed at the lower end of the sliding block. The lower end of the sliding block is rotatably provided with a rotating block, the inner side of the rotating block is provided with a groove, the inner side of the groove is fixedly provided with a fixing nail through threads, the number of the mounting blocks is four, and the four mounting blocks are mounted on the left side and the right side of the mounting base in a bilateral symmetry mode. According to the plastic connecting piece for the table legs, the table top and the table legs are rapidly separated through the sliding blocks and the sliding grooves, use in the next time is facilitated, the table legs can be folded inwards by rotating the table legs, the sliding blocks and the rotating blocks at the upper ends of the table legs are matched with each other and rotate around the hinges, storage of the table is facilitated, and practicability is greatly improved.

The utility model relates to the technical field of hanging bags, in particular to a desk hanging bag which comprises a hanging bag body, a first bandage, a second bandage, a fixing assembly, a quick-release buckle head, a quick-release buckle seat, a connecting cloth strip, a water cup bag, a plastic connecting strip, an umbrella cylinder and a cloth bag. Through the fixing assemblies arranged on the first bandage and the second bandage, after the quick-release buckle head of the first bandage and the quick-release buckle base on the second bandage are buckled and hung on the table edge, the tightness degree of the bandage body is adjusted by pulling the first bandage, then the fixing assemblies of the first bandage and the second bandage are moved on the bandage body, and the fixing assemblies of the first bandage and the second bandage are fixed on the bandage body. When the bag is hung on the table side, the bag is adjusted to a proper position, the rubber suction cup at the bottom of the adjusting seat is adsorbed and fixed to the table top by pressing the fixing assembly, so that the positions of the two bandages are fixed, the contact between the bag and the table top has good friction performance through the arrangement of the silica gel anti-skid piece, and therefore it is ensured that the bag is firmly hung on the table side and is prevented from sliding off or toppling over.

The utility model discloses a kind of plastic connecting pieces for pipe, it is related to plastic connecting piece field, the utility model includes plastic connecting pipe, both ends of plastic connecting pipe are fixed with internal thread head, and the outer wall of plastic connecting pipe and internal thread head is equipped with anti-skid boss ring.The utility model is provided with upper sheath and lower sheath, so as to shield and protect plastic connecting pipe and internal thread head, while when plastic connecting pipe is impacted by outside, upper sheath and lower sheath will be impacted first and be deformed, so as to play the role of buffer, avoid plastic connecting pipe to be directly impacted and appear damage, and when upper sheath and lower sheath need to be disassembled and replaced, staff can first take down clamp, then upper sheath and lower sheath can be taken out, so that upper sheath and lower sheath can be replaced, by the way, sheath can also be taken out without separating plastic connecting pipe and external pipe, thereby reduce the disassembly frequency of plastic connecting pipe and pipe.

The present invention relates to a method for sealing a composite pipe, and belongs to the technical field of pipe sealing processing. In order to solve the existing problems of poor operational stability and poor connection strength, a method for sealing a composite pipe is provided, which includes machining a selected plastic connecting pipe, forming an annular clearance groove penetrating the end face on the outer sides of both ends of the plastic connecting pipe, and having a first groove wall facing the axial direction of the plastic connecting pipe; heating and hot-melting the two groove walls of the annular clearance groove, and heating and hot-melting the surface of the outer layer of the plastic connecting pipe used for welding the pipe head; heating and hot-melting the inner side wall of the pipe head and the end face of the annular baffle; extruding and sleeve welding, and after cooling and solidification, obtaining the corresponding sealed composite pipe. It can effectively maintain the bonding strength performance of the middle fiber reinforced layer, so that it has better shear strength performance.

The utility model discloses a stable type fixed height supporter which comprises four supporter main bodies, positioning holes are formed in the centers of the interiors of the supporter main bodies, first fan-shaped grooves are formed in the front faces of the supporter main bodies, and second fan-shaped grooves are formed in the back faces of the supporter main bodies. Two plastic connecting blocks are fixedly installed on the sides, close to each other in pairs, of the supporting device main bodies, pre-breaking grooves are formed in the front faces of the plastic connecting blocks, two water leakage holes are formed in the outer sides of the supporting device main bodies, and three first reinforcing frameworks are fixedly installed in an inner cavity of a first fan-shaped groove; and three second reinforcing frameworks are fixedly mounted in an inner cavity of the second fan-shaped groove. The stable height-fixing supporting device has the advantages of being convenient to disassemble and good in fixing and stabilizing effect, and solves the problems that a height-fixing supporting device in the prior art is inconvenient to disassemble and support during use and poor in stability at the same time.

The utility model discloses a polygonal modularized suspended ceiling structure, and relates to the field of decoration materials. The metal profiles and the plastic connecting pieces are spliced to form the frame of the suspended ceiling, so that the processing cost, the mounting cost and the mounting difficulty are remarkably reduced. The polygonal modular suspended ceiling structure comprises profiles and inserting connecting pieces connected between the adjacent profiles, and the multiple profiles are connected through the inserting connecting pieces to form a polygonal frame in a surrounding mode. The section bar is a plate extending longitudinally, the upper portion of the section bar is bent to form a square groove with two through ends, and the lower portion of the section bar is a horizontal hanging plate with the width larger than that of the square groove. The inserting connecting piece comprises a center connecting block and at least two inserting rods, and the inserting rods are matched with end openings in the two ends of the square groove. The decorative plate can be applied to public places such as offices, meeting rooms, restaurants, lobbies, school classrooms, music classrooms, terrace classrooms, multifunctional classrooms, corridors, recording and broadcasting rooms and the like or home decoration.

This utility model relates to the field of shower chair technology and discloses a shower chair including a seat, a backrest, armrests, and support legs detachable from the seat. By creating a pin hole on the upper part of the support leg and a through hole in the insertion tube communicating with the pin hole, and by using a plastic connector that can be simultaneously inserted into both the through hole and the pin hole, the upper end of the support leg is connected and fixed after the insertion tube is inserted. Furthermore, the alignment process of the pin hole and the through hole, as well as the installation process of the plastic connector, are all visualized, effectively solving the alignment difficulties caused by obstructed vision due to the installation block in existing technologies, making the installation of the support leg and the insertion tube more convenient and efficient. When the pin is simultaneously inserted into both the pin hole of the support leg and the through hole of the insertion tube, the first arc-shaped plate fits tightly against the outer wall of the insertion tube, and the second arc-shaped plate is engaged with the outer side of the support leg through an inverted snap structure. This ensures both the stability of the connection between the support leg and the insertion tube and allows the plastic connector to serve an aesthetic and decorative function for the shower chair.

The utility model provides a replaceable disposable collecting bag for a negative pressure drainage ball, which relates to the field of medical instruments, and comprises a negative pressure drainage ball body, a connecting assembly is arranged at the bottom of the negative pressure drainage ball body, the connecting assembly comprises a connecting hose, a connector and a stop block, an anti-backflow clamp is arranged on the outer wall of the connecting assembly, and the connecting hose is connected with the anti-backflow clamp. A collecting mechanism is arranged at the bottom of the connecting assembly and comprises a disposable collecting bag body, a plastic connecting strip, a plastic slipknot, a connecting pipe, a reverse pulling type hole plug and a convex ring. According to the disposable collecting bag, when a medical worker needs to replace the disposable collecting bag body, the backflow preventing clamp is firstly closed, then the reverse pulling type hole plug and the convex ring are pulled out, then the plastic movable buckle is opened, and then the disposable collecting bag body is detached, so that replacement of the disposable collecting bag body is facilitated, and due to the arrangement of the plastic connecting strip and the plastic movable buckle, the disposable collecting bag body is convenient to replace. The number of supporting points of the disposable collecting bag body is increased, and the possibility that the disposable collecting bag body falls off is reduced.

The utility model discloses an auxiliary wiring tool for lifting metering operation and replacing a meter safely and quickly, which relates to the technical field of wiring tools and comprises a plastic limiting mechanism, a frame part, a clamping part arranged on the frame part, a plastic connecting mechanism, a deformation part arranged on the frame part and a plastic fixing mechanism, comprising a clamping plate part arranged on a deformation part and a protection part arranged on the clamping plate part, exposed wire ends can be effectively blocked by utilizing a protection side plate, the wire ends are prevented from being exposed outside, the electric shock condition is reduced, through proper protection of the protection side plate, the electric shock risk condition is greatly reduced, meanwhile, the sequence of all connecting wires can be fixed, and the wiring quality is improved. When a new electric energy meter is connected, the new electric energy meter is sequentially connected according to the wire dismounting sequence, and metering abnormity and other safety accidents caused by disordered wire sequence are avoided.

The embodiment of the utility model provides a lock, a bicycle basket and a riding tool. The lock comprises a lock body assembly and a control assembly. The lock body assembly comprises a metal shell, a motor, a transmission assembly and a spring bolt. The motor is coupled to the metal housing. The bolt is rotatably coupled to the housing and is switchable between an extended position and a retracted position relative to the housing. The transmission assembly is coupled between the lock tongue and the motor. And under the condition that the spring bolt is located at the extending position, the spring bolt can limit the to-be-locked object to the target position. The control assembly comprises a non-metal shell, a circuit board and a detection part. The circuit board and the detection part are arranged in the non-metal shell, and the circuit board is electrically connected with the motor and the detection part. The detection component is configured to detect whether an object to be locked is located at a target position or not. By means of the arrangement, the control assembly and the lock body assembly of the lock are arranged in a separated mode, unnecessary plastic connecting structures and plastic frame structures between the control assembly and the lock body assembly are reduced, and therefore use of plastic is reduced.

The application relates to a commercial vehicle mixed material instrument beam and a manufacturing method thereof, wherein an aluminum alloy pipe beam cross section is polygonal; a steering column support and a main driver side front wall and a steering column integrated support support are formed by magnesium-aluminum alloy pressure casting, and are connected with the aluminum alloy pipe beam through FDS screws; a plastic support assembly is segmented injection molded, each segment comprises a support body and a plastic connecting ring connected with each other; an inner wall of the plastic connecting ring is provided with a cladding connecting surface for the outer surface of the aluminum alloy pipe beam; and the plastic connecting ring and the aluminum alloy pipe beam are pull-riveted. The above structure realizes that the stamping and welding process can be replaced by the FDS and pull-riveting processes, the production cost and steps are reduced; the plastic connecting ring increases the connecting area, directly contacts the aluminum alloy pipe beam through an opening during connection, and is riveted; the connecting strength is strengthened while installation and positioning are facilitated; the injection molding is performed in a segmented mode, the mold scale is reduced, and the injection molding process and cost are simplified.

The invention discloses a device for improving connection performance of metal and plastic, which comprises a base, a welding machine is arranged on the base, a bottom plate is mounted on the welding machine, a placing groove is formed in the center of the bottom plate, a plurality of groups of clamping grooves are formed in the center of the bottom plate, and an upper die and a lower die are arranged between the welding machine and the bottom plate. The top end of the upper die is fixedly connected with a threaded shaft; the clamping assembly is arranged on the bottom plate and is matched with the placing groove and the multiple groups of clamping grooves, and the clamping assembly is arranged on the bottom plate and is matched with the placing groove and the multiple groups of clamping grooves; and the mounting assembly is used for mounting the upper mold and the lower mold respectively, is arranged in the base and is connected with the clamping assembly. The device for improving the connection performance of the metal and the plastic solves the problem that when the upper mold and the lower mold are mounted originally, the connection performance of the metal and the plastic is improved; and the adaptation between the upper die and the lower die needs to be continuously adjusted manually, so that the whole operation wastes time and labor.

The utility model discloses a British standard socket, which comprises a socket shell, a plurality of plastic connecting pieces and three bent metal groups, the bent metal groups are respectively a ground wire metal group, a live wire metal group and a null wire metal group, and the ground wire metal group, the live wire metal group and the null wire metal group are respectively arranged on the plastic connecting pieces. The plurality of plastic connecting pieces and the bent metal group are spliced and assembled to form a socket core of which four surfaces are provided with AC power sockets, and the ground wire metal group, the live wire metal group and the null wire metal group finish electronic gap isolation through the plastic connecting pieces. According to the utility model, the structure is simple, the bending metal group corresponds to each end face of the socket in a bending manner, the number of wires is reduced, the internal space can be better utilized, and the production and manufacturing can be rapidly carried out in the bending manner, so that the cost is reduced.

The utility model relates to the technical field of automobile parts, and discloses an automobile suspension lining structure which comprises a plastic outer pipe, a rubber sleeve is fixedly bonded to the inner side of the plastic outer pipe, supporting rods are fixedly connected to the inner walls of the two opposite sides of the bottom of the plastic outer pipe, and a plastic wrapping pipe is fixedly connected between the two supporting rods. The outer wall of the middle of the plastic wrapping pipe is fixedly sleeved with a plastic wrapping pipe, a vulcanized inner pipe is fixed to the inner side of the plastic wrapping pipe, the outer wall of the middle of the plastic wrapping pipe is fixedly sleeved with a hopper-shaped plastic connecting pipe, the outer wall of the top of the plastic wrapping pipe is sleeved with a plastic inner sleeve, and the outer wall of the plastic inner sleeve is fixedly sleeved with a plastic outer sleeve. The lower end face of the plastic outer sleeve is fixed to the upper end face of the hopper-shaped plastic connecting pipe, and plastic parts such as the plastic wrapping pipe, the plastic inner sleeve and the plastic outer sleeve provide stable support and specific rigidity for the whole structure and are matched with the rubber sleeve, so that the lining can generate enough damping to attenuate vibration under low-frequency vibration, and the vibration resistance of the lining is improved. Therefore, the low-frequency damping performance of the suspension is improved.

The utility model provides a kind of plastic connecting piece with suspension function, it is related to furniture connecting piece field, comprising: connecting piece;It is set on the connecting piece, and it is used to connect the installation structure of first outer connecting piece and second outer connecting piece;At least one and the suspension part of the integrated molding of connecting piece, the suspension part is formed suspension space from connecting piece and extends outwardly.This application is integrated by integrated molding plastic connecting piece connection and suspension function, single installation can be realized simultaneously, solves the traditional double component function split, installation is complicated and position interference problem;Plastic material reduces cost and weight, and single component reduces supply chain cost;Save installation space, improve compact scene applicability;There is no sharp edge, improve security and aesthetic degree.

The present application relates to the technical fields of mobile communication antenna, and provides a phase shifter assembly and a base station antenna, the phase shifter assembly can include: a metal shell, a power division circuit board, a metal wire, a plastic connecting block, a phase shifting medium block and a first guide protrusion and a first guide groove matched with each other, the metal shell includes a first packaging wall, a second packaging wall, a connecting wall, a top wall, a first opening and a second opening, and the power division circuit board is covered in the second opening; the metal wire is fixed with the metal shell through the plastic connecting block; the phase shifting medium block can pass through the first opening and reciprocally slide in the direction of the first opening towards the connecting wall; one of the first guide protrusion and the first guide groove is arranged on the first packaging wall and extends in the direction of the first opening towards the connecting wall, and the other is arranged on the surface of the phase shifting medium block opposite to the first packaging wall. According to the phase shifter assembly provided in the embodiment, the performance stability can be improved.

The utility model provides a space leather fabric for a knapsack, which is characterized in that a surface facing the inner side of the knapsack is taken as the inner side, the other surface is taken as the outer side, and the space leather fabric sequentially comprises a waterproof inner layer, a plastic connecting layer, a space leather layer and an anti-oxidation outer layer from inside to outside, a plurality of rubber connecting columns are arranged on the side, facing the plastic connecting layer, of the waterproof inner layer. Each rubber connecting column is in a circular truncated cone shape, and the small-diameter face of each rubber connecting column adheres to the waterproof inner layer through acrylic emulsion. A plurality of through holes corresponding to the rubber connecting columns in shape, size and position are formed in the side face, facing the waterproof inner layer, of the plastic connecting layer, and the face, with the smaller diameter, of each through hole faces the waterproof inner layer. The waterproof inner layer and the plastic connecting layer are connected through sleeving of the rubber connecting columns and the through holes, and the plastic connecting layer, the space leather layer and the anti-oxidation outer layer are sequentially and fixedly connected through a binder. According to the knapsack made of the fabric, the waterproof inner layer is detachable, the anti-oxidation outer layer is not prone to fading, and the service life of the knapsack is long.

The utility model relates to a pollen-proof sleeping tent made of a composite material. The sleeping tent comprises a sleeping tent body and a frame used for supporting the sleeping tent. The sleeping tent body is composed of a tent top, a tent body, a rectangular-ambulatory-plane tent bottom, a zipper, tent body covering surrounding cloth and pipe penetrating surrounding cloth. The tent top, the tent body, the rectangular-ambulatory-plane tent bottom and the zipper are spliced to form a hollow cuboid, the tent body covering surrounding cloth is connected with the tent top along the joint of the tent top and the tent body, and the pipe penetrating surrounding cloth is sewn on the long edge, the wide edge and the high edge of the cuboid formed by the sleeping tent body. The supporting rods are hollow metal pipes, penetrate through the penetrating pipe surrounding cloth of the sleeping tent body and then are connected with one another through plastic connecting pieces, and therefore a frame for supporting the sleeping tent is formed. The sleeping tent is characterized in that the composite cloth forming the tent top, the tent body and the tent bottom shaped like the Chinese character'hui 'has a good blocking effect on pollen particles with the diameter of 1 micrometer or above, and meanwhile good air permeability can be kept; two length surfaces and one width surface of the tent body can be opened and closed through a double-sided zipper, so that access is convenient.

The invention relates to a heat exchanger device for electronic components, in particular power electronics devices, comprising a metallic heat exchanger with at least one joining surface for attaching at least one plastic element by means of a direct metal-plastic connection, wherein a section of the metallic heat exchanger associated with the at least one joining surface, preferably the entire heat exchanger, is manufactured by sintering, preferably comprising press sintering and / or metal powder injection molding.