538results about How to "Reduce assembly process" patented technology

The invention discloses a motor assembly, a thrust assembly and an aircraft, and relates to the technical field of aircrafts. The motor assembly comprises an outer rotor, one axial end of the outer rotor is a mechanical coupling end, and the other axial end of the outer rotor is an open end; at least part of the inner stator extends into the outer rotor from the open end to be rotationally connected with the outer rotor, and the inner stator is provided with a central shaft hole penetrating through the inner stator in the axial direction of the inner stator; the rear cover is arranged on the side, away from the mechanical connection end, of the inner stator so as to cover the central shaft hole. The cooling assembly is arranged on the side, away from the inner stator, of the rear cover; a part of the transmission assembly is arranged in the central shaft hole and is in transmission connection with the outer rotor, and the other part of the transmission assembly penetrates through the rear cover and is in transmission connection with the cooling assembly, so that the outer rotor drives the cooling assembly through the transmission assembly. According to the motor assembly, an independent driving assembly required by the cooling assembly is omitted, so that the overall weight of the motor assembly is optimized.

A marching assisting exoskeleton robot comprises a waist supporting structure module, a waist rod module, a joint driving module and a binding system. The waist rod module comprises two groups of waist rod module assemblies which are symmetrically arranged relative to the waist supporting structure module. According to the design scheme provided by the embodiment of the invention, parts can be changed into a whole, the structure of the whole machine is simplified, so that assembling procedures are reduced, the structural complexity can be reduced, and the stability of the machine body is improved. By applying the symmetrical telescopic adjusting module, the machine body can bring better wearing adaptability and comfort to people with different figures. Compared with an existing light walking-aiding exoskeleton robot, the light walking-aiding exoskeleton robot has the advantages of being comfortable and convenient to wear, convenient to operate, high in whole machine protection capacity and high in power-aiding capacity, and in addition, the light walking-aiding exoskeleton robot is small in size and light in mass and has high market competitiveness in exoskeleton robot products of the same type.

The utility model relates to the technical field of automobile parts, and provides a filter and a motor controller. The filter comprises an integrated magnetic core which comprises an annular common mode magnetic core and a differential mode piece inserted in the common mode magnetic core, and the differential mode piece and a part of magnetic circuit of the common mode magnetic core form a differential mode magnetic core; the body of the copper bar assembly is wound on the integrated magnetic core; the integrated protective shell comprises a first protective shell wrapping the integrated magnetic core and a second protective shell wrapping the leading-out part of the copper bar assembly, and the first protective shell and the second protective shell are integrally formed. According to the utility model, the differential mode piece is inserted into the common mode magnetic core to form the integrated magnetic core, so that the differential mode filtering performance can be realized without increasing the volume of the magnetic ring, an X capacitor in a filter can be replaced, and the volume and design difficulty of the filter are reduced; in addition, the protective shell of the magnetic core part and the protective shell of the copper bar part are integrally designed, so that the dispensing and assembling procedures can be reduced, and the number of molds can be reduced.

The utility model relates to the technical field of scissor pin assembly, and discloses a high-strength long key scissor pin structure, which comprises a long key cap, a long outer scissor pin, an inner scissor pin, a first bottom plate and a second bottom plate, the long key cap is respectively clamped with the long outer scissor pin and the inner scissor pin, the first bottom plate is arranged between the long key cap and the second bottom plate, and the second bottom plate is respectively clamped with the long outer scissor pin and the inner scissor pin; wherein one surface, back to the long keycap, of the long outer scissors is provided with two mounting grooves, the two mounting grooves are distributed at two opposite ends of the long outer scissors in parallel, and iron sheets are embedded in the mounting grooves and are arranged in a long plate shape. The long key cap is respectively clamped with the long outer scissors and the inner scissors, and the second bottom plate is respectively clamped with the long outer scissors and the inner scissors; one side of the long outer shear back to the long keycap is provided with two mounting grooves, and iron sheets are embedded in the mounting grooves, so that the high-strength long key scissor foot structure is provided, the strength of the scissor foot structure is enhanced, the balance rod design is not needed, the assembly process is reduced, and the production cost is reduced.

The utility model relates to the technical field of batteries, and discloses a battery module and a battery pack, and the battery module comprises a battery cell assembly and a heat management assembly. A plurality of battery cell assemblies are arranged; the heat management assembly comprises a first liquid cooling plate and a second liquid cooling plate which are oppositely arranged as well as cross beams and longitudinal beams which are connected between the first liquid cooling plate and the second liquid cooling plate, the cross beams and the longitudinal beams divide the space between the first liquid cooling plate and the second liquid cooling plate into a plurality of first accommodating spaces, and the plurality of battery cell assemblies are correspondingly arranged in the first accommodating spaces respectively; and the first liquid cooling plate, the second liquid cooling plate, the cross beam and the longitudinal beam are respectively connected with the battery cell assembly in a limiting manner. According to the utility model, the battery cell assembly and the thermal management assembly are integrated, so that the structure of the battery module is more compact, and the energy density of a battery pack is favorably improved; when the battery module is assembled with the battery pack shell, the whole battery module and the battery pack are directly positioned, mounted and fixed at one time, so that the positioning connection of the battery core assembly, the heat management assembly and the battery pack shell can be realized, and the assembly process is saved.

The present invention provides a multifunctional sound-generating device, comprising a shell having a receiving cavity and a sound-generating unit placed in the receiving cavity, the sound-generating unit comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate along a first direction, the magnetic circuit system comprising a main magnetic steel and a secondary magnetic steel arranged around the main magnetic steel to form a magnetic gap, the vibration system comprising a sound membrane and a voice coil inserted in the magnetic gap to drive the sound membrane to vibrate and produce sound; the multifunctional sound-generating device also comprises an elastic component fixed to the shell and suspending the sound-generating unit in the receiving cavity, and a driving coil fixed to the inner wall of the shell and used to drive the sound-generating unit to vibrate along a second direction, the driving coil comprising a first side and a second side arranged opposite to the first side, in the first direction, the first side is arranged opposite to the main magnetic steel, the second side is arranged opposite to the secondary magnetic steel, and the second direction is perpendicular to the first direction; the sound membrane extends to form a partition connected to the inner wall of the shell to divide the receiving cavity into a front cavity and a rear cavity.

The clothes dryer comprises a shell, a stator assembly and a rotor assembly are arranged in each of two cavities of the shell, the shell comprises an integrated middle shell, an end cover A and an end cover B are fixed to the two ends of the middle shell respectively, and the outer diameter of the stator assembly A is smaller than that of the stator assembly B; a rotor assembly A is arranged on the inner side of the stator assembly A; two ends of a rotating shaft of the rotor assembly A are rotationally connected with the middle shell and the end cover A respectively; the rotor assembly B is arranged on the inner side of the stator assembly B. The two ends of a rotating shaft of the rotor assembly B are rotationally connected with the middle shell and the end cover B. The rotor assembly A and the rotor assembly B are coaxially arranged. And the at least one stator assembly is embedded in the middle shell through an insert molding process. According to the invention, one group or two groups of stator assemblies are directly pre-embedded in the integrated middle shell through insert molding, so that the stator assembly process is reduced, the production efficiency is improved, the coaxiality of the two rotor assemblies is better, the vibration during operation can be reduced, and the noise is reduced.

The utility model relates to the technical field of illumination, and discloses a light emitting piece which is a rotational symmetric body and comprises a first end part, a first light reflecting part, a second end part, a second light reflecting part and a third end part, the first end part is provided with a light outlet; the first reflecting part is formed by extending the first end part upwards in an arc-shaped manner in the direction far away from the light outlet, and is provided with a reflecting surface; the second end part is the top end of the light emitting part; the second end part obliquely extends downwards in the direction close to the light outlet to form the second light reflecting part, and the second light reflecting part is provided with a polarization surface; the third end part is arranged at the other end of the second light reflecting part; and the first end part, the first light reflecting part, the second end part, the second light reflecting part and the third end part jointly encircle to form a light emitting cavity. The light entering the light outlet cavity is emitted from the light outlet after being collimated and reflected by the first light reflecting part and deflected and reflected by the second light reflecting part, so that the direct light is avoided, the glare condition is effectively controlled, and the light outlet effect is good. The utility model further provides a light emitting structure comprising the light emitting piece and a lamp.

The invention relates to a base station antenna device and a base station. The base station antenna device comprises a reflecting plate, a cavity structure, a radiating unit and a connecting assembly, the radiation unit comprises a radiation arm, a balun and a feed part, one end of the balun is connected with the radiation arm, and the feed part penetrates through the balun; the cavity structure and the radiation arm are located on the two sides of the reflecting plate in the first direction respectively; a phase-shifting network is arranged in the cavity structure, and one end, far away from the radiation arm, of the feed piece is connected with the phase-shifting network; the connecting assembly comprises a connecting part and a fastening part, and the connecting part is fixed to the outer wall of the balun and located on the side, back on to the cavity structure, of the reflecting plate; and the fastening part sequentially penetrates through the connecting part, the reflecting plate and the cavity wall of the cavity structure so as to fixedly connect the connecting part, the reflecting plate and the cavity wall. The radiating unit and the cavity structure can be fixed with the reflecting plate at the same time through one-time operation, so that the assembling process and the number of fastening parts are reduced.

The utility model relates to the technical field of fuel gas control, and discloses an electromagnetic valve and a fuel gas device, the electromagnetic valve fixedly connects a sealing cap and a valve core into a whole, a valve shaft assembly drives the sealing cap to move through the valve core, the valve shaft assembly directly acts on the valve core instead of the sealing cap, and the sealing cap deforms more easily than the valve core. Compared with a sealing cap, the valve element is not prone to deformation, so that the problem of clamping stagnation in the moving process of the valve element can be avoided, and the smoothness of the valve element in the moving process is improved. In addition, the main medium outlet in the valve body is opened and closed through the sealing cap, the auxiliary medium outlet in the sealing cap is opened and closed through the valve shaft assembly, the electromagnetic valve only uses one sealing cap, the number of the sealing caps is reduced, the structure is simpler, cost is low, and the assembling procedure of the electromagnetic valve is reduced. The valve element of the electromagnetic valve of the gas device is high in smoothness when moving, smooth opening and closing of the electromagnetic valve are facilitated, and timeliness and accuracy of opening and closing of the gas device are improved. The electromagnetic valve is simple in structure and favorable for reducing the cost of a gas device.

The longitudinal beam is used for the battery pack and comprises a main body and a sliding rail, the main body extends in the first direction, the sliding rail is arranged on the main body and extends in the first direction, the sliding rail is suitable for being matched with a supporting component connected with a seat of the vehicle so that the supporting component can slide along the sliding rail, and the seat is directly installed on the sliding rail. Compared with the prior art, a seat installation support is saved, the seat sliding rail and an installation support of the seat sliding rail do not need to be additionally installed, assembling procedures are reduced, and the assembling efficiency of the seat sliding rail is improved.

The utility model discloses a composite material aircraft spar and metal joint assembly in the technical field, which comprises a spar and a joint and is characterized in that the spar is made of composite materials, the joint is made of metal materials, the spar and the joint are both of C-shaped structures, the joint is connected to the inner side of one end of the spar, and the other end of the spar is connected with the metal joint. A step face is machined on the inner side, corresponding to the installation connector, of the end of the spar, and a step face is correspondingly machined on the outer side of the connector.

The utility model relates to the technical field of lighting lamps, in particular to a high-heat-dissipation panel lamp which is characterized by comprising a base plate, a mounting plate, a printed circuit board (PCB), a lens and a fixing frame. Wherein the base plate is arranged in an opening mode, the installation plate is arranged at the bottom of the base plate, the PCB is provided with LED lamp beads used for emitting light, the PCB is bonded to the installation plate through silica gel, the lens is installed at the opening of the base plate, shields the PCB and the LED lamp beads in the base plate and protects the PCB and the LED lamp beads, the fixing frame is installed at the opening of the base plate, and the lens is fixed to the base plate. When the lamp is used, heat emitted by the LED lamp beads is transmitted to the base plate through the silica gel, the heat dissipation effect is improved, and the service life of the lamp is prolonged.

The present invention discloses a treadmill, comprising a front running platform with a front roller at the front end and a rear running platform with a rear roller at the rear end, a running belt which is tensioned on the front roller and the rear roller and covers the front running board of the front running platform and the rear running board of the rear running platform, and also comprises an electrical module which assembles a driving transmission mechanism and a control electrical appliance on a front frame, wherein the electrical module is detachably connected to the front end of the front running platform, and the front running platform and the rear running platform are detachably connected via a folding mechanism; the front frame of the electrical module is provided with an opening facing the front running platform, and the rear ends of the two straight rods of the front frame and the front ends of the two side plates of the front running platform are male-female plug-in structures and are screwed. The treadmill realizes modular assembly, has few parts and components during assembly, simple structure, convenient assembly and material preparation, convenient and quick installation, reduces installation procedures and assembly processes, greatly improves production efficiency, greatly reduces production costs, and has obvious economic benefits.

The invention provides an air rudder, and belongs to the technical field of air rudders. The control surface skin is arranged outside the rudder skeleton and surrounds the rudder skeleton, the control surface skin is connected with the rudder skeleton, and a mounting cavity is formed between the control surface skin and the rudder skeleton; the rudder shaft is connected with the rudder framework and located at the bottom of the rudder framework; the rudder skeleton, the rudder surface skin and the rudder shaft are integrally formed through three-dimensional printing. The air rudder has the beneficial effects that the rudder framework, the rudder surface skin and the rudder shaft are integrally formed through three-dimensional printing, connection of the air rudder and an aircraft can be achieved, no screw or rivet or other connecting structures exist among the rudder framework, the rudder surface skin and the rudder shaft, the rigidity of the air rudder can be enhanced, the assembling clearance of the air rudder is reduced, the machining and assembling procedures are reduced, and the cost is reduced.

The utility model relates to the technical field of power batteries, and discloses a battery and electric equipment, and the electric equipment comprises the battery; the battery comprises a shell, a roll core, a cover plate and a collector plate, the shell is provided with a first slope. The cover plate is provided with a second inclined surface, and the second inclined surface extends along the periphery of the cover plate and is opposite to the first inclined surface; the flow collecting disc comprises a flow collecting part, an elastic part and an inclined part; the current collecting part is connected with the roll core; the elastic part is elastically supported between the flow collecting part and the inclined part, the inclined part is clamped between the first inclined surface and the second inclined surface, and the first inclined surface and the second inclined surface are welded and fixed by the inclined part; the inclination angle of the inclined part is alpha, and alpha is larger than 0 degree and smaller than 90 degrees. The first inclined surface is arranged on the shell, the second inclined surface is arranged on the cover plate, and the inclined part of the collector plate is clamped between the first inclined surface and the second inclined surface, so that the collector plate, the cover plate and the shell can be connected and fixed through one-time welding, the assembly procedures are reduced, the assembly cost is reduced, and the assembly efficiency is improved.

The integrated flushing valve comprises a valve body assembly, a first switching mechanism and a second switching mechanism, the valve body assembly comprises a valve body and at least one valve deck, the valve body is provided with a water inlet, a water passing channel, a first water outlet and a second water outlet, the valve deck is connected to the valve body, and the first switching mechanism and the second switching mechanism are arranged on the valve deck. The first valve cavity is located between the water inlet and the water inlet end of the water passing channel, the second valve cavity is located between the water outlet end of the water passing channel and the first water outlet and the second water outlet, and the first switching mechanism partially enters the first valve cavity and controls the water inlet to be communicated with the water inlet end of the water passing channel or not. The second switching mechanism partially enters the second valve cavity and controls the water outlet end of the water passing channel to be communicated with the first water outlet or the second water outlet. According to the utility model, the assembly error among the modules can be reduced, and the reliability and consistency after assembly are improved.

The invention discloses a glasses frame structure, AR glasses and a calibration method thereof, and relates to the technical field of AR glasses, the glasses frame structure comprises a glasses frame main body and two ray machine installation parts, the glasses frame main body is provided with an inner side and an outer side located in the thickness direction of the glasses frame main body, and the inner side or the outer side of the glasses frame main body is provided with two installation areas used for installation of two waveguides correspondingly. The two ray machine mounting parts are arranged corresponding to the two mounting areas and are integrally arranged on the spectacle frame main body, an optical channel is formed in each ray machine mounting part, one end of each optical channel is communicated with the corresponding mounting area, the other end of each optical channel penetrates through the free end of the corresponding ray machine mounting part, and the spectacle frame main body and the ray machine mounting parts are integrally arranged. According to the technical scheme, the waveguide and the optical machine are assembled on the glasses frame structure together, step-by-step calibration is optimized into synchronous calibration, the AR glasses can be calibrated through one set of active alignment equipment, the assembling procedure of the glasses frame structure can be omitted, time is saved, and the assembling cost can be reduced.

The utility model relates to an electromagnetic valve of a shock absorber, which comprises an electromagnetic component, a control valve core (9) on an overflow valve is driven by the electromagnetic component to adjust the opening degree of a valve hole on a control valve seat (8.1), and a first spring (10) is positioned between the control valve core (9) and the control valve seat (8.1) of the overflow valve. And two ends of the second spring (11) respectively act on the push rod (6) and a control valve core (9) of the overflow valve. According to the solenoid valve of the shock absorber, the mounting position of the second spring is changed, so that later disassembly and maintenance are facilitated, the number of spare and accessory parts is reduced, and the assembly efficiency is improved.

The utility model discloses an inserting plate type lamp holder inner core structure convenient to assemble automatically, and belongs to the technical field of lamps. Comprises: a connection housing; the wick module and the conductive elastic sheet are inserted from the front end and the rear end of the connecting shell respectively, conductive copper foil is distributed on a circuit board part at the insertion end of the wick module, the insertion end of the conductive elastic sheet abuts against the conductive copper foil, and the other end of the conductive elastic sheet is used for being in contact with an electric wire for electrification. According to the design, a filament support and a lamp holder are omitted, the cost is reduced, the assembling process is omitted, the steps of welding the contact pins and manually pairing the contact pins and the plug bushes are omitted, and the cost is reduced and the efficiency is improved. The utility model further discloses a waterproof lamp holder with the lamp holder inner core structure, the waterproof lamp holder comprises a lamp holder, a mounting plate is arranged in the lamp holder and divides the lamp holder into a lamp wick mounting cavity and a wire containing cavity, and the connecting shell is connected with the mounting plate. After the electric wire is fixed in the electric wire accommodating cavity, the electric wire accommodating cavity is filled with glue, and then the electric wire accommodating cavity is sealed, so that a good waterproof effect is achieved.

The invention relates to a lens upper shell assembly and a vehicle-mounted camera, and the lens upper shell assembly comprises a lens which comprises a lens main body and a limiting platform which is connected to the side surface of the lens main body in a surrounding manner, the lens is provided with a roll riveting groove, and the roll riveting groove is formed in the side surface of the lens main body in a surrounding manner; the upper shell comprises an upper shell body arranged on the lens body in a sleeving mode and a plurality of roll riveting ribs integrally connected to one side of the upper shell body, the roll riveting ribs are riveted in the roll riveting grooves in a rolling mode, and the other side of the upper shell body abuts against the limiting platform; and the sealing element is arranged between the lens and the upper shell so as to seal a gap between the lens and the upper shell. According to the lens upper shell assembly, the structure of the locking ring is optimized, the lens and the upper shell are directly riveted and fixedly connected through the roll riveting technology, rolling friction is generated between the roll riveting head and the roll riveting rib, the problems of chippings or burrs and the like are avoided, the number of materials of the whole scheme is reduced, the material cost is reduced, the assembling procedures are reduced, and the production takt is improved.

The invention discloses a thrust assembly and an aircraft, and relates to the technical field of aircrafts. The electric engine of the thrust assembly comprises an outer rotor and an inner stator; the propeller hub is fixedly connected with the outer rotor, and the central axis of the propeller hub and the central axis of the outer rotor are collinear; the fixed end of the linear driving assembly is arranged in the propeller hub and fixedly connected with the inner stator, and the output end of the linear driving assembly extends out of the propeller hub in the direction away from the electric engine; the variable-pitch push disc is located on the side, away from the electric engine, of the propeller hub and rotatably connected with the output end through a variable-pitch bearing so as to be driven by the linear driving assembly to reciprocate in the axial direction of the propeller hub. One end of the connecting cable is connected with the connecting part of the fixed end, and the other end of the connecting cable penetrates through the through hole and extends into the inner stator to be connected with the control module. The variable-pitch push disc is arranged right above the propeller hub, so that the structural size of the variable-pitch push disc is not limited by the size of the propeller hub, and the structural strength of the variable-pitch push disc can be improved.

The utility model discloses a single-core bent connector, which is provided with a plug component and a socket component. The jack of the plug component is integrally formed by punching, is arranged in the plug shell and is provided with a contact part and a crimping part which are connected through a connecting part; the crimping part is sleeved with a tail cover, the tail nut is connected with the plug shell, and the wire sealing body is compressed in the tail nut at the rear end of the crimping part; an insulating cap of the socket component is fixed at one end of a pin; the contact pin is arranged in the socket shell and can be prevented from withdrawing; the connecting sleeve is arranged outside the socket shell in a limiting and sleeving mode and can rotate by 360 degrees. And the socket component is plugged with the contact part of the jack, and the contact part is plugged between the pin and the socket shell and is clamped and positioned with the plug shell through an excircle convex point outside the connecting sleeve. The single-core bent energy storage connector has the characteristics of high protection, high voltage resistance, high power and the like.

The utility model discloses a high-voltage direct-current relay which comprises an insulating cover and a yoke clamp, the yoke clamp is provided with a first tail end and a second tail end, the first tail end is connected with the second tail end, so that an annular structure is defined by the yoke clamp, and the annular structure surrounds the periphery of the insulating cover. According to the yoke clamp, the one-piece structure is adopted, the first tail end and the second tail end are connected to form the annular structure, and compared with the design that two U-shaped yoke clamps are adopted in the prior art, on one hand, the yoke clamp is of the one-piece structure, the number of parts is reduced, assembling is convenient, and the assembling efficiency is improved; and on the other hand, the yoke clamp is easy to machine, automation is easier to achieve, and the machining efficiency is remarkably improved.

The invention relates to the technical field of resin material modification, and particularly provides a polycarbonate material and a preparation method thereof, an air deflector and an air conditioner, and the polycarbonate material is prepared from the following raw materials in parts by weight: 80-91 parts of polycarbonate resin; 6-10 parts by weight of a toughening agent, wherein the toughening agent comprises a siloxane acrylate copolymer and an ethylene-methyl acrylate copolymer; 1-3 parts by weight of a phosphate softener; and 0.5-1 part by weight of a flow modifier. The polycarbonate material provided by the invention has good high and low temperature resistance, the prepared air deflector is not easy to deform under high and low temperature conditions, and the material also has excellent chemical resistance, has small chromatic aberration in an aging or high-temperature environment, and can be used for large-scale production of air deflectors.

The utility model relates to the field of high-voltage direct-current circuit protection, in particular to an anti-short-circuit-current direct-current contactor which comprises an electromagnetic driving mechanism, a static contact and a moving contact structure. The moving contact structure comprises a base, a U-shaped bracket movably clamped on the base, a contact spring positioned between the base and the U-shaped bracket, a U-shaped bracket, a moving contact bridge, an upper magnetizer and a lower magnetizer; the push rod is arranged on the base. The two sides of one end, facing the static contact, of the U-shaped support are fixedly connected with an upper magnetizer and an elastic piece. The movable contact bridge is located between the upper magnetizer and the lower magnetizer; the two ends of the contact spring abut against the lower magnetizer and the base respectively. An air gap is reserved between the upper magnetizer and the lower magnetizer, a gap is reserved between the U-shaped support and the base in the moving contact bridge displacement path direction, and the gap is smaller than the overtravel distance. When the switch is switched on, the gap between the U-shaped support and the base is eliminated, so that the air gap between the upper magnetizer and the lower magnetizer is minimum, and the capability of resisting short-circuit current is strongest.

A housing assembly, a fuse, a circuit system and an electric device, the housing assembly comprises a first housing and a second housing, the first housing and the second housing are clamped, the first housing and the second housing jointly enclose to form a fixing hole, and the fixing hole is used for clamping and fixing a connecting terminal of the fuse. The shell assembly provided by the utility model is used for the fuse, the shell assembly comprises a first shell and a second shell, the first shell and the second shell are clamped and fixed, and a connecting terminal is clamped and fixed through a fixing hole enclosed by the first shell and the second shell; according to the shell assembly, redundant parts are fully removed, and assembling procedures can be reduced.

The utility model discloses an explosion-proof valve integrated on an upper cover and a battery pack, and the explosion-proof valve comprises an upper cover body which is provided with an accommodating cavity; the explosion-proof valve body comprises a pressure relief pipeline and a breathable film, the pressure relief pipeline and the upper cover body are integrally formed, one end of the pressure relief pipeline is communicated with the interior of the containing cavity, the other end of the pressure relief pipeline is communicated with the exterior of the containing cavity, and the breathable film is assembled at one end of the pressure relief pipeline. According to the utility model, the explosion-proof valve body and the upper cover body can be integrated, so that the number of parts is reduced, the cost is reduced, the assembly procedures can be reduced, the production efficiency is improved, the problem of air tightness of assembly between the explosion-proof valve body and the upper cover body is avoided, the risk of leakage is reduced, and the reliability is improved.

The utility model relates to the technical field of man-machine interaction of electronic equipment, and particularly discloses a backlight touch key. The backlight touch key comprises a shell and a plurality of key assemblies, each key assembly comprises a key unit and a touch conduction unit, and each key unit is provided with a first end and a second end which are opposite to each other; the first end is embedded in the shell, the key unit penetrates through the touch conduction unit, the outer surface of the touch conduction unit is provided with a capacitive sensing surface, the capacitive sensing surface is attached to the shell, and the relative position of the shell and the touch conduction unit is fixed. According to the backlight touch key, the specific structure is improved, so that high integration of the structure and simplification of the manufacturing process are realized while the backlight uniformity and the induction sensitivity are ensured.

The utility model relates to the field of printers, and discloses an upper inner cover and lower inner cover connecting structure which comprises a lower inner cover and clearance positions, the clearance positions are arranged on the left side and the right side of the tail portion of the lower inner cover respectively, the lower end of the tail portion of each clearance position is provided with a steel shaft position upper semicircular hole used for inserting a steel shaft, and one side of each steel shaft position upper semicircular hole is provided with a downward inner cover bone position. And the bottom of the inner cover bone position is semicircular. According to the connecting structure for the upper inner cover and the lower inner cover, the steel shaft position lower semicircular hole is formed, during assembling, the steel shaft position lower semicircular hole in the cover turning leg of the upper inner cover is aligned with the steel shaft position upper semicircular hole in the lower inner cover, then a steel shaft is inserted, and the assembled lower inner cover and upper inner cover are placed in the base; the semicircle on the upward rib position of the base is matched with the semicircle on the inner cover rib position of the lower inner cover to form a circle together, the other end of the steel shaft is pressed, and the blocking rib of the semicircle of the base can abut against one end of the steel shaft, so that the steel shaft cannot fall out of a rotating space, and the problem that the rotating center space is not enough is solved.