24results about How to "Prevent reverse installation" patented technology

The utility model provides an air duct assembly of an air conditioner and an indoor unit of the air conditioner. The air duct assembly comprises a first motor, a second motor and a shell. The first motor comprises a first motor body and a first protruding block. The first protruding block extends outwards from the peripheral wall of the first motor body and is located at the end, close to the first output shaft, of the first motor body. The second motor comprises a second motor body and a second protruding block. The second protruding block extends outwards from the peripheral wall of the second motor body and is located at the end, away from the second output shaft, of the second motor body. A first containing cavity and a second containing cavity which are arranged at intervals are formed in the shell. The first motor is fixedly installed in the first containing cavity, and a first groove connected with the first protruding block in an inserted and sleeved mode is formed in the first containing cavity. The second motor is fixedly installed in the second containing cavity, and a second groove connected with the second protruding block in an inserted and sleeved mode is formed in the second containing cavity. The air duct assembly can effectively prevent the two motors from being installed reversely, and the quality accidents that a wind wheel rotates reversely and an air conditioner does not discharge air are avoided.

The utility model relates to a gas pipeline shell fixing clamp positioning press-fitting device, a press-fitting mechanism is arranged on an installation disc and on one side of a positioning assembly, the press-fitting mechanism comprises a press-fitting air cylinder, a guide seat and a press-fitting positioning seat, the guide seat is provided with a guide groove, a fixing clamp is arranged in the guide groove, and the press-fitting positioning seat is arranged on the guide groove. A push rod is arranged at the front end of the press-fitting air cylinder and inserted into the guide groove, the fixing clamp is driven by the push rod to move, a first wing plate of the gas pipeline shell is arranged on the press-fitting positioning seat, a wing plate open groove allowing the fixing clamp to be inserted is formed in one side of the first wing plate, and the wing plate open groove is correspondingly connected with the guide groove. The fixing clamp comprises a conical part, a disc part and a square disc part which are sequentially arranged from top to bottom, the groove walls of the two sides of the guide groove are provided with guide slopes and first limiting grooves, the lower side of the disc part makes contact with the guide slopes, and the square disc part is arranged in the first limiting grooves. According to the utility model, reverse mounting of the fixing clamp can be avoided, and automatic press mounting of the fixing clamp can be realized.

The invention provides an experimental device for sampling combustion soot of a space station, and belongs to the technical field of microgravity combustion and combustion diagnosis systems, and the experimental device specifically comprises a mounting seat which is used for being connected with a combustor mounting position on a gas experimental plug-in; the multi-jet combustor is mounted on the mounting seat, the multi-jet combustor comprises a fuel pipe and a wake gas channel, the end, away from the mounting seat, of the multi-jet combustor serves as a combustion end, and fuel and wake gas are ignited after being converged at the combustion end; the sampling assembly is detachably mounted on the combustion end, the sampling assembly comprises a plurality of probes, and the sampling ends of the probes are in contact with the flame of fuel combustion so as to sample the combustion soot of the fuel; the protective cover is detachably connected with the sampling assembly, the protective cover is used for surrounding the probe, and the protective cover is connected with the sampling assembly after the fuel is combusted and the sampling assembly completes sampling. The device can be applied to a space station combustion scientific experiment system, and the functions of flame ignition, soot sample collection and the like are achieved.

The application relates to a quick-release combined door type exhibition rack in the technical field of display equipment, which can be quickly disassembled and assembled and has good comprehensive practicability, and comprises a horizontal support, two sliding supports, a vertical support, a fastening knob and a fastening threaded rod and a limiting adjusting device.

The utility model discloses a novel flowmeter device which comprises an upper shell and a lower shell which are assembled with each other, rotors are rotationally installed in the upper shell and the lower shell, a liquid outlet pipe and a liquid inlet pipe are arranged at the outer end of the upper shell and the outer end of the lower shell respectively, a plurality of blades are distributed on the outer sides of the rotors at equal intervals, and columns are arranged on the blades. Each blade is provided with a cylinder, so that the shape of each blade is kept uniform, the weight of each blade is balanced, and the dynamic balance effect is improved. The pressing block and the sinking groove are arranged in a long and short manner, so that the problem of reverse installation can be avoided; and the assembling groove and the aligning block are uniquely positioned and matched, so that the problem of reverse assembly is further avoided. The two ends of the rotor are modified into flat-corner cone blocks, and top sharp corners of the cone blocks are removed, so that the injection molding rate is increased, and damage caused by collision is avoided.

The application discloses an axle head and axle housing body assembly press-fitting tool, which comprises a right axle head point fixing tool and a left axle head point fixing tool, the right axle head point fixing tool comprises a first bottom plate, a first V-shaped block rotatably installed on the first bottom plate, a first front adjusting block and a first rear adjusting block installed on the first V-shaped block; the left axle head point fixing tool comprises a second bottom plate, a second V-shaped block rotatably installed on the second bottom plate, a second front adjusting block and a second rear adjusting block installed on the second V-shaped block; an angle adjusting cylinder is connected to the first V-shaped block, and the angle adjusting cylinder is suitable for adjusting the angle of the first V-shaped block relative to the first bottom plate. The V-shaped block is matched with the front and rear staggered adjusting blocks (the first front adjusting block, the first rear adjusting block, the second front adjusting block and the second rear adjusting block), so that the axle head can be kept stable during the press-fitting process, the deviation or inclination is reduced, and the assembly coaxial degree and precision are improved.

This application provides a terminal block assembly, an end cap assembly, an energy storage device, and an electrical device to reduce the cost of terminals and improve product competitiveness. The terminal block assembly includes a terminal block, pins, and a conductive element. The pins include a first pin portion and a second pin portion. The first pin portion is fixedly connected to the terminal block, and the second pin portion is fixedly connected to the first pin portion and intersects with the first pin portion. The conductive element is fixedly connected to the second pin portion, and the material of the conductive element is different from the material of the pins.

The utility model discloses a reel anti-reverse installation device for a reel placing shaft, which relates to the technical field of semiconductor packaging test, and comprises a reel placing shaft which comprises a base and a positioning shaft arranged on the base in a penetrating manner, and an elastic positioning piece capable of moving along the axial direction vertical to the positioning shaft is inserted into the side wall of the positioning shaft; the first end of the detection needle is arranged in the base and is elastically connected with the base, the second end of the detection needle extends out of the base, and the second end of the detection needle exceeds the part, located outside the base, of the elastic positioning piece in the axial direction of the positioning shaft; the locking block is arranged on the inner side wall, opposite to the elastic positioning piece, of the positioning shaft and is movably arranged in the axial direction of the positioning shaft; and the linkage piece is arranged between the detection needle and the locking block, and is used for driving the locking block to move to the lower part of the elastic positioning piece when the detection needle is in a pressed state so as to abut against the elastic positioning piece. The device can prevent a worker from reversely installing the reel, and the dependence on the installation experience of the worker is reduced.

The utility model provides a drainage tube joint relates to hepatobiliary drainage technical field, the utility model discloses a joint body is provided with the drainage bag joint on the joint body, be provided with the drainage tube body on the joint body, be provided with the connecting structure on the joint body, the connecting structure mainly is by two connecting heads and is composed, two connecting heads fixed connection on drainage bag joint and drainage tube body respectively, the second magnetic block is fixedly connected with on drainage bag joint and drainage tube body, the both ends of joint body are fixedly connected with first magnetic block respectively, the utility model solves the problem that the nursing staff usually will be inserted to the drainage bag after drainage tube, uses the connecting place between the viscidity band winding in drainage tube and drainage bag, prevents drainage tube and drainage bag separation, but when replacing drainage bag next time, then needs to replace after viscidity band dismounts down to carry out, and leads to the problem of operation troublesome.

The utility model relates to the technical field of air conditioners, and discloses an electrical box assembly. The electric appliance box assembly comprises a terminal strip and an electric appliance box, the terminal strip is provided with a positioning through hole, and the positioning through hole deviates from the central position of the terminal strip; the electric appliance box is provided with a mounting hole, and the mounting hole corresponds to the positioning through hole; wherein the terminal strip is arranged in the electric appliance box; when the terminal strip is installed on the electric appliance box in the forward direction, the positioning through holes are correspondingly communicated with the installation holes. And when the terminal strip is reversely mounted on the electric appliance box, the positioning through holes and the mounting holes are mutually staggered. Only when the terminal strip is installed in the electric appliance box in the forward direction, the positioning through holes are correspondingly communicated with the installation holes, and when the direction of the terminal strip needs to be changed, due to the fact that the positioning through holes are not centered, the terminal strip cannot be installed in place after the direction is changed, and therefore the fool-proof function is achieved, and the terminal strip is prevented from being installed reversely. In the installation process of the terminal strip, the mutual positions of the positioning through holes and the installation holes can be directly observed, and the installation efficiency is improved. The utility model further discloses the air conditioner.

This utility model relates to the field of battery technology, providing a battery pack and an electrical device. The battery pack includes a battery box and a bracket. The battery box has a mounting groove near its opening. A positioning part is provided within the mounting groove. The bracket is disposed within the mounting groove. The bracket has a connecting part protruding along a first direction. The connecting part connects to the positioning part. This prevents the bracket from being installed backwards or from shifting its installation position.

The utility model provides a heat dissipation structure, a power single tube installation structure and electronic equipment, and relates to the field of electrical technology. The heat dissipation structure comprises an insulation heat conduction structure and a radiator, the insulation heat conduction structure comprises a first face and a second face which are oppositely arranged, the first face of the insulation heat conduction structure is attached to the radiator, the second face of the insulation heat conduction structure is used for being attached to a part to be cooled, and a positioning structure is arranged between the insulation heat conduction structure and the radiator. The two parts, located on the two sides of any set plane, of the positioning structure are asymmetrically arranged relative to the set plane, and the set plane intersects with the positioning structure and forms a preset included angle with the first face. The positioning structure can realize relative position positioning of the insulating heat-conducting structure and the radiator, avoids reverse installation of the first surface and the second surface, is beneficial to ensuring the insulating heat-conducting performance of a to-be-cooled part such as a power single tube and the radiator through the insulating heat-conducting structure, ensures the heat dissipation performance of the to-be-cooled part, improves the use performance of the to-be-cooled part, and is high in practicability.

The utility model relates to the technical field of piston ring assembly, in particular to a piston ring and piston assembly structure and an engine. In the assembly structure, a thrust block is arranged on the axial side face of the piston ring, and a first set angle is formed between the thrust block and the opening. An annular groove is formed in the piston ring, a thrust groove is formed in the axial side face of the annular groove, a thrust block of the piston ring is clamped in the thrust groove of the annular groove, an installation mark is arranged on the top face of the piston, a second set angle is formed between the projection of the thrust groove on the top face and the installation mark, and the first set angle is equal to the second set angle. According to the assembly structure, the risk that the piston ring is reversely assembled is reduced, opening alignment of the piston ring is avoided, the opening angle of the piston ring does not need to be adjusted when the piston ring is assembled, and the assembly efficiency is improved.

The utility model relates to a magnetic attraction structure of helmet bluetooth earphone belongs to communication equipment technical field, this magnetic attraction structure includes bluetooth earphone and base, the bottom of bluetooth earphone is provided with at least two clamping slots, the top of base is elastically provided with the buckle corresponding with clamping slot, the buckle buckle is arranged in the inside of base and is rotationally connected in base. The utility model simple structure layout is exquisite, realizes the automatic suction of earphone and base through magnetic attraction principle, prevents earphone from being installed reversely through magnetic repulsion characteristic, improves the convenience and accuracy of use, and the linkage structure design of spring and buckle position ensures that earphone is tightly clamped after suction, improves structural stability, avoids earphone falling in the process of using, compared with prior art has the remarkable progress.

The utility model relates to a cylinder assembly, pump body structure and compressor, cylinder assembly includes cylinder body, sliding block, the middle part of cylinder body is passed through its axial both ends and is provided with compression cavity, the inside wall of compression cavity is recessed and is formed with the sliding slot along the radial direction, the side of sliding slot away from compression cavity is spaced and is provided with the first cooperation part and the second cooperation part with the distance not equal with the center line of compression cavity along the axial direction, sliding block is slidably arranged in the sliding slot, the side surface of sliding block close to compression cavity is eccentric circular surface, the side of sliding block away from compression cavity is spaced and is provided with the first abutment of abutting with the first cooperation part and the second abutment of abutting with the second cooperation part along the axial direction, the utility model promotes the back pressure of sliding block through reducing the pressure of the end of sliding block and piston contact, and through the design of the first abutment and the second abutment of unequal length, prevent the adverse condition of reverse installation of sliding block, effectively solve the adverse phenomenon of "KATA" noise.

The utility model relates to the technical field of machining cutters, and discloses a fool-proof adjustable structure R-shaped grooving cutter which comprises a grooving cutter bar and an R arc-shaped cutter blade, a pressing plate is arranged at the top of one end of the grooving cutter bar, the R arc-shaped cutter blade is arranged between the pressing plate and the grooving cutter bar, an adjusting groove is formed in the position, located on one side of the pressing plate, in the grooving cutter bar, and the adjusting groove is arranged in the groove cutter bar. The center size of the cutter can be adjusted through cooperation of the pressing screw, the adjusting screw and the trapezoidal cutter block, when the pressing screw is screwed, the center of the cutter deviates leftwards, the cutter is clamped in the adjusting groove, the cutter is clamped in the adjusting groove, the cutter is clamped in the adjusting groove, the cutter is clamped in the adjusting groove, and the cutter is clamped in the adjusting groove. And when the adjusting screw is screwed, the center of the cutter deviates rightwards, so that the service life of the cutter is prolonged, and the machining quality of a workpiece is improved.

The utility model relates to the field of batteries, in particular to a battery box. The battery box comprises a box body and a battery cover, the box body is in a box shape with an upward opening, the battery cover is in a box shape with a downward opening, the battery cover is inserted into the box body, a first wiring terminal is arranged at the bottom of the box body, and a second wiring terminal vertically corresponding to the first wiring terminal is arranged in the battery cover; a limiting groove is formed in one side of the box body, a limiting rod is fixedly mounted on one side of the battery cover, and the limiting groove is matched with the limiting rod; the battery box further comprises a pressing locking mechanism, and the pressing locking mechanism is used for fixing the box body and the battery cover. The battery box provided by the utility model has the advantages that the positive and negative electrodes of the battery can be prevented from being reversely mounted, the battery box can be used for a common battery, a special battery pack is not needed, and the cost is low.

The utility model provides a swash plate type plunger motor or a swash plate type plunger pump, the swash plate type plunger motor or the swash plate type plunger pump comprises a shell, a cylinder body contained in the shell, a rotating assembly and a thrust plate, and the rotating assembly is contained in the shell and comprises the cylinder body, a plunger arranged in a plunger hole of the cylinder body and a sliding shoe rotationally connected with the plunger; the thrust plate is obliquely arranged in the shell and comprises a plate body and a plurality of positioning structures, the sliding shoe is in sliding contact with the plate body so as to guide the plunger to axially slide in the plunger hole in a reciprocating manner, and the positioning structures are arranged on the edge of the plate body and are asymmetrically arranged in the circumferential direction of the plate body about the center of the plate body; thus, in the assembling process, when the thrust plate is installed reversely or the installation angle deviates, interference occurs between the positioning structure and the shell or between the thrust plate and a structure matched with the positioning structure in the shell, so that the thrust plate cannot be placed at the position, used for assembling the thrust plate, in the shell, and then the thrust plate can be effectively prevented from being installed reversely.

The utility model relates to a nursing device with replaceable atomizing piece and belongs to the technical field of nursing equipment. It designs the atomizing piece as a detachable independent component, connects through the buckle connection structure between the spray port and the liquid medicine cup, can detach the spray port without tools, takes out and replaces the atomizing piece, effectively solves the problems that the microhole of the traditional net type atomizer is easy to block and the maintenance cost is high, in addition, adopts two end type layout, makes the nasal washing waterway and the atomization gas path physically isolated, fundamentally avoids the cross contamination. The utility model reduces the long-term use cost of the user, improves the maintenance convenience and use experience, simultaneously realizes one machine multiple uses, satisfies different respiratory tract nursing needs.

The invention discloses a wire holder mechanism for manually implanting wires into an injection molding module and a wire plastic coating forming method in the field of wire plastic coating in an injection mold. The wire holder mechanism comprises a wire holder frame, a plurality of wires mounted in the wire holder frame and a mold, a wire rod reference block, a first supporting block and a second supporting block are arranged in the wire frame, the wire rod reference block, the first supporting block and the second supporting block support the wire rod, the wire rod reference block is connected with an adjusting block, the adjusting block is installed on a ruler, the adjusting block slides on the ruler, and the position of the wire rod on a mold is determined through the ruler. A fool-proof block used for preventing the coil holder from being reversely mounted is mounted on the scale, a coil holder positioning screw is arranged on the fool-proof block, a positioning groove is formed in the mold, and the positioning groove is matched with the coil holder positioning screw, so that the coil holder frame is quickly positioned on the mold. According to the invention, rapid and accurate wire implantation can be realized, the wire implantation period is shortened, and the productivity is improved.

The utility model relates to the technical field of air conditioners, and discloses an electric control box assembly and an air conditioner. The electric control box assembly comprises an electric control box, the electric control box comprises a box body and a box cover covering an opening of the box body, the box body comprises a first box side wall and a second box side wall opposite to the first box side wall, and the box cover is provided with a first cover side wall used for being matched with the first box side wall and a second cover side wall used for being matched with the second box side wall; the terminal strip box is arranged on the outer side of the first box side wall; the distance between the terminal strip box and the opening of the box body is smaller than the height of the second cover side wall and larger than or equal to the height of the first cover side wall. Under the condition that the first cover side wall corresponds to the first box side wall, that is, the box cover is correctly installed on the box body, the first cover side wall does not interfere with the terminal strip box, and under the condition that the second cover side wall corresponds to the first box side wall, that is, the box cover is reversely installed on the box body, the second cover side wall interferes with the terminal strip box. Therefore, the box cover cannot be installed on the box body, and the box cover is prevented from being installed reversely.

The utility model provides an air duct component for an air conditioner indoor unit and the air conditioner indoor unit. The air duct component comprises a first end plate and an electric heater. The first end plate forms a first end face of one end of the air channel of the air conditioner indoor unit in the length direction. A mounting hole is formed in the first end plate. An open groove or a protruding rib is arranged on the hole wall of one side of the installation hole. The electric heater is in a long strip shape, the two ends of the electric heater are a first end and a second end respectively, the second end penetrates through the mounting hole from the side, away from the air channel, of the first end plate and then is connected to the other end, away from the first end plate, of the air channel, and the first end is inserted into the mounting hole. And one side of the side wall of the second end part is provided with a mounting bulge corresponding to the opening groove or is provided with a mounting groove corresponding to the convex rib. According to the air duct component, the fool-proof effect is achieved, the situation that the electric heater is installed upside down and needs to be reworked is avoided, the installation efficiency of the electric heater is improved, then manpower and operation time are saved, and the production cost of the air conditioner is reduced.