42results 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 utility model discloses a flow battery guide plate for reducing electrolyte concentration difference, which comprises a body, the body is in a rectangular plate shape, and a positive electrode liquid inlet hole and a negative electrode liquid inlet hole which are used for feeding liquid and a positive electrode liquid outlet hole and a negative electrode liquid outlet hole which are used for discharging liquid are respectively arranged on two sides of a long edge of the body; a reaction chamber is arranged in the middle of the body, and two sides of the reaction chamber are respectively communicated with the positive electrode liquid outlet hole and the positive electrode liquid inlet hole through two diversion trenches; the diversion trench is communicated with the liquid storage tank, bosses are arranged between the liquid storage tank and the reaction chamber, and a permeation channel capable of allowing electrolyte to circulate is reserved between every two adjacent bosses; a flow guide block is arranged in the flow guide groove. The guide plate is provided with the liquid storage tank and the boss, so that the electrolyte can enter the reaction chamber from a plurality of parts at the same time, and the distance between the liquid inlet and the liquid outlet is reduced, so that the problems that the concentration difference of the electrolyte is increased and the local temperature of the battery is too high are avoided, and the service life of the battery is prolonged.

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.

The fool-proof end cover comprises a heat exchange body, a cold water inlet pipe, a cold water outlet pipe, an upper end cover and a lower end cover, a first heat exchange array and a second heat exchange array which exchange heat with each other are arranged in the heat exchange body, the cold water inlet pipe is communicated with a water inlet of the first heat exchange array, and the cold water outlet pipe is communicated with a water outlet of the first heat exchange array; the upper end cover is installed on the upper portion of the heat exchange body, a first through hole and a second through hole are formed in the upper end cover, the cold water inlet pipe penetrates through the first through hole and then is exposed, and the cold water outlet pipe penetrates through the second through hole and then is exposed. The lower end cover is installed on the lower portion of the heat exchange body, a warm water outlet pipe and a hot water inlet pipe are arranged on the lower end cover, the hot water inlet pipe is communicated with a water inlet of the second heat exchange array, and the warm water outlet pipe is communicated with a water outlet of the second heat exchange array. The utility model has the advantages of differentiated design of the upper end cover and the lower end cover, effective prevention of reverse installation of the upper end cover and the lower end cover, high installation efficiency, convenient installation and the like.

The invention belongs to the technical field of automobile parts, and relates to an automobile connector with compatibility protection. The gap between the connector sealing rib (1f) and the upper shell groove (4d) is filled with the upper sealant (4e), or the upper shell groove (4d) is not coated with the upper sealant (4e); the connector sealing surface (1h) is coated with a lower sealant (5c), the lower bottom plate sealing surface (5b) is coated with a lower sealant (5c), and after the ECU lower bottom plate (5) is assembled, the lower sealant (5c) fills a gap between the connector sealing surface (1h) and the lower bottom plate sealing surface (5b), or the lower sealant (5c) is not coated between the lower bottom plate sealing surface (5b) and the connector shell (1). According to the automobile connector with the compatibility protection function, protection requirements of different levels are met according to actual application, and the problems that waste is caused when a high-protection-level connector is applied to a low-requirement automobile model and the low-protection-level connector cannot be applied to the high-requirement automobile model are solved; and the method can be applied to different automobile ECUs and other products according to different requirements.

A special tooling and assembly method for reverse installation of a stator brush holder, comprising a base, a core column, a stator positioning device and an anti-error device, wherein the core column is perpendicular to the base and one end of the core column is fixedly connected to the center of the upper surface of the base, the end of the core column close to the base is adapted to the stator, and the end of the core column away from the base is adapted to the brush holder; the stator positioning device is fixedly arranged on the upper surface of the base for positioning the stator sleeved on the core column; the anti-error device is fixedly arranged on the side of the core column away from the base end to prevent the brush on the stator from being reversely installed in the brush holder. Compared with the prior art, the present invention can effectively prevent the brush electrode from being reversely installed through the anti-error device, thereby greatly improving the efficiency and quality of assembly of the motor stator and brush holder.

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 relates to the technical field of textile, and discloses a hydraulic loom driving shaft cover which comprises a protective cover and a machine body, fixing blocks are fixedly arranged in the middles of the front end and the rear end of the bottom of the protective cover, through holes are formed in the middles of the two fixing blocks, and fixing grooves are formed in the front end and the rear end of the top of the machine body. The two fixing blocks are connected with the two fixing grooves in a clamped mode respectively. During installation, the two fixing blocks are aligned with the two fixing grooves to be inserted into the two fixing grooves, the clamping blocks are obliquely arranged, the springs and the telescopic rods are compressed, and when the through holes reach the corresponding positions, the oblique clamping blocks pop out and are clamped into the through holes to achieve fixation; and the two clamping blocks are shifted outwards to compress the spring and the telescopic rod, so that the limiting of the through hole can be canceled, and therefore, the device can be quickly mounted and dismounted, the protective cover can be conveniently mounted in the early stage and dismounted and mounted in the later stage, and the maintenance difficulty and cost are 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 relates to the field of screen film pasting, in particular to a film pasting assistor which comprises a profiling shell matched with electronic equipment, the profiling shell comprises a plane portion and a surrounding edge arranged at the bottom of the plane portion, and a containing groove used for being matched with the electronic equipment in a clamped mode is formed between the surrounding edge and the profiling shell. Two first hanging hooks and a second hanging hook which are used for hanging a release film on the front side of the tempered film are arranged at the two ends of the bottom of the plane part respectively, a channel used for avoiding a release film on the back side of the tempered film is formed in one end of the profiling shell, the profiling shell is simple in structure, electronic equipment is tightly clamped, and the safety of the electronic equipment is improved. And it is ensured that sliding or displacement is avoided in the film pasting process, and therefore the stability and accuracy of film pasting are greatly improved. And the mounting and positioning of the tempered film assembly become very simple and fast through the ingeniously designed hanging hooks and channels, and even a user pasting the film for the first time can easily master the mounting and positioning of the tempered film assembly.

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 a vehicle-mounted antenna mounting structure and a vehicle, relates to the technical field of vehicles, and is used for solving the technical problem of relatively poor convenience of later maintenance of an antenna module in related technologies. The vehicle-mounted antenna installation structure comprises a vehicle body and an installation assembly, the vehicle body comprises a vehicle roof beam and a chassis, the vehicle roof beam and the chassis form a vehicle body internal space, the vehicle roof beam is provided with an installation surface facing the chassis, and the installation assembly can comprise a first installation support connected to the installation surface of the vehicle roof beam. The antenna module comprises two mounting bases, the two mounting bases are symmetrically arranged in the first direction and define a containing cavity, the first direction is parallel to the extending direction of the roof cross beam, and the antenna module is arranged in the containing cavity and detachably connected to the sides, away from the roof cross beam, of the mounting bases.

The utility model provides a correction device with a combined belt head, which is different from an integral plastic belt head in that a metal sheet is manufactured by utilizing the characteristics of toughness and difficulty in abrasion of a metal material, and the metal sheet and a plastic belt head base are combined into an integral correction belt head. In addition, a plastic mounting frame, a first locking mechanism and a second locking mechanism are arranged, so that the assembly stability among all parts of the combined belt head is improved, and the opening part of the combined belt head is not easy to wear and is firmer in the using process. And finally, a first fool-proof mechanism and a second fool-proof mechanism are further arranged, so that the metal sheets can be prevented from being mounted reversely and mistakenly in the assembling process, and convenience is provided for a user when the belt core is replaced.

The utility model discloses a clamp for assembling lower plastic, and belongs to the technical field of batteries. The clamp comprises a lower die, the lower die is used for containing the top cover piece and lower plastic, the lower die is provided with a groove matched with the boss, and the two ends of the lower die are further provided with limiting blocks; the upper mold comprises a control mechanism, telescopic blocks arranged at the two ends of the upper mold and an elastic piece arranged towards the lower mold, and the control mechanism is connected with the elastic piece and the telescopic blocks; and the driving mechanism is used for driving the upper mold to move towards the lower mold so as to assemble and connect the lower plastic to the top cover piece. According to the clamp for assembling the lower plastic cement, manual assembling of the lower plastic cement can be replaced, fool-proof design is achieved through cooperation of the boss and the groove and cooperation of the elastic piece, the control mechanism, the telescopic block and the limiting block, reverse assembling of the lower plastic cement and reverse assembling of the top cover piece can be prevented, and the product quality is improved.

The utility model discloses an LVDS wire end connector housing, an LVDS wire end connector and an assembly thereof, the LVDS wire end connector housing comprises a plane portion and a pair of cantilever portions arranged in the width direction of the plane portion, each cantilever portion comprises a bottom wall connected with the plane portion and a first side wall bending upwards along a long edge of the bottom wall, and the first side wall is provided with a second side wall bending upwards along a long edge of the second side wall. An elastic pressing key is arranged at the end of the first side wall and comprises an outer side pressing face, the bottom end of the outer side pressing face is bent towards the inner side of the cantilever part to form a connecting part, and the connecting part is bent upwards and extends to form a hook part parallel to the first side wall. According to the LVDS wire end connector, the hook part is integrally arranged on the shell, the problem that a split type hook part is installed reversely is avoided, the installation process is greatly simplified, the elastic pressing key is further arranged on the shell, the problem of breakage caused by long-time pressing of the rubber core is avoided, and the service life of the LVDS wire end connector is prolonged.

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.