60results about How to "Guaranteed assembly effect" patented technology

The invention discloses a motor stator assembly tool and an assembly line, and relates to the technical field of motor assembly. A turntable; a plurality of placing grooves for placing the motor shell are formed in the turntable; the three-jaw chuck is connected to the rack in a sliding and rotating mode; the driving assembly comprises a rotary drum rotationally connected to the rack; the plurality of positioning mechanisms are arranged at the bottoms of the placing grooves and are used for positioning the motor shells in the placing grooves; through clockwise and anticlockwise rotation of the rotating drum, after a stator is inserted into a motor shell in the clockwise direction, the rotating disc is driven to rotate, the motor shell to be assembled downwards is rotated to an assembling station, when the rotating drum rotates anticlockwise, the three-jaw chuck can vertically move upwards and rotate, and the stator is clamped, grabbed and reset in the rotating process; preparation is made for next-time assembly, and the assembly efficiency is greatly improved; through the positioning of the positioning device, the collision between the stator and the motor shell is avoided, and the assembly effect is ensured.

The automatic assembling equipment comprises a working platform, a main rotation line is arranged on the working platform, and a piston assembling station, a positioner assembling station, a screw assembling station and a spring assembling station are sequentially arranged on one side of the main rotation line in the conveying direction. A fixing seat assembling station, a pen barrel assembling station and a detecting and transferring station are sequentially arranged on the other side of the main rotary line in the conveying direction, and a rotary disc mechanism is arranged outside the end, located at the spring assembling station and the fixing seat assembling station, of the main rotary line; the rotating disc mechanism comprises a linkage gear assembling station, a transmission rod assembling station, a preassembling and transferring station and a vacancy detecting station which are sequentially arranged in the rotating direction. The preassembling and transferring station preassembles linkage gears and transmission rods and transfers the linkage gears and the transmission rods to the main rotating line. The device further comprises a discharging robot located behind the detecting and transferring station. Therefore, full-automatic assembling of the pen barrel assembly is achieved, the assembling efficiency is greatly improved, and the assembling effect is guaranteed.

The invention provides a laminating tool assembling and backflow all-in-one machine which comprises a feeding elevator arranged at the inlet end of a laminating machine and used for feeding photovoltaic modules; the adhesive tape sticking and assembling mechanism is arranged above the inlet end and is used for sleeving the photovoltaic module with a laminating tool and sticking an adhesive tape; the discharging elevator is arranged at the outlet end of the laminating machine and is used for discharging the photovoltaic module; the adhesive tape tearing and separating mechanism is arranged above the outlet end and is used for tearing off the adhesive tape, so that the laminating tool is separated from the photovoltaic module; and the backflow conveying line is arranged above the laminating machine and is used for enabling the laminating tool separated by the adhesive tape tearing and separating mechanism to flow back to the adhesive tape sticking and assembling mechanism. The automatic bonding and separating device has the beneficial effects that automatic bonding and separating of the laminating tool and the photovoltaic module are realized, manual operation is replaced, the labor cost is saved, the working efficiency is improved, the assembling effect and the laminating effect are ensured, and the plate explosion rate is reduced.

The utility model provides an LED lamp box, a display panel and a display device, and relates to the technical field of display. The LED lamp box comprises a plurality of box bodies and a plurality of first connecting pieces, the box bodies are spliced in an array mode, and each splicing corner at a first splicing area is provided with a first fixing structure and a first positioning hole; each first connecting piece comprises a first connecting plate and a plurality of first fixing pieces, and the first connecting plate is provided with a plurality of first positioning columns located on the first surface. In the embodiment of the invention, the first positioning columns are matched with the first positioning holes in an inserted manner, so that the multiple splicing angles are positioned in the horizontal plane, the size of a gap between any two adjacent splicing angles is ensured, and the positioning efficiency during splicing of the multiple box bodies is improved; the first fixing part is fixedly connected with the first fixing structure, so that the assembling convenience is improved; the multiple splicing angles are limited through the first surfaces of the first connecting pieces, so that the offset of the multiple splicing angles is reduced or even avoided, and the splicing flatness of the multiple box bodies is guaranteed.

The invention relates to a hard alloy composite roller. A hard alloy composite roller comprises a roller shaft, a roller ring and a spacer ring, a first retainer and a second retainer are arranged on the roller shaft, the roller shaft comprises at least two assembly sections which are sequentially arranged in the axial direction, the roller ring and the spacer ring are arranged on the assembly sections, and the assembly sections are located between the first retainer and the second retainer. The outer diameter of the assembly section, close to the first retainer, of every two adjacent assembly sections is larger than that of the assembly section, close to the second retainer, of every two adjacent assembly sections. A third retainer is arranged at the end of the assembly section, close to the second retainer, of every two adjacent assembly sections, and the outer diameter of part of the third retainer or the outer diameter of the whole third retainer is smaller than the outer diameter of the spacer ring or the roller ring. And the spacer ring and the roller ring are limited between two adjacent third retainers or between the third retainers and the first retainers or between the third retainers and the second retainers. The device has the advantages that assembly is convenient, the assembly effect can be guaranteed, and workers can observe and judge the abrasion degree of the middle section of the composite roller conveniently.

The utility model relates to air conditioning technical field provides a vertical air conditioner shell and vertical air conditioner, wherein, vertical air conditioner shell includes panel frame, front panel, lower trim panel and decoration strip, front panel and lower trim panel set up in panel frame, and front panel and lower trim panel are along the vertical distribution of panel frame, and lower trim panel and panel frame are connected through first connecting structure, and first connecting structure is suitable for allowing the position of lower trim panel on panel frame is adjustable along the vertical of panel frame, and decoration strip extends along the edge of front panel, and both end surfaces of decoration strip butt joint the upper end surface of lower trim panel. Thus, the setting position of lower trim panel on panel frame is adjustable along the vertical of panel frame, and in the assembly, can adaptively adjust the installation position of lower trim panel on panel frame according to the position of the lower end of decoration strip, to ensure the cooperation effect of the lower end of decoration strip and the upper end of lower trim panel, solve the problem that the injection molding processing precision of decoration strip has greater influence on the assembly effect of vertical air conditioner in the related art.

The utility model provides a high altitude 1000kV substation station power supply system with higher reliability relates to substation station power supply technical field. High altitude 1000kV substation station power supply system, including station transformer I, station transformer II, spare power station transformer, first busbar I section, first busbar II section and first busbar III section, the spare power station transformer is accessed from the station, and its low voltage side is connected with first busbar II section, is equipped with the tie -in circuit breaker between first busbar II section and first busbar I section and between first busbar II section and first busbar III section respectively, is equipped with the access line I and access line II of parallel setting on the working section busbar III section, is equipped with station transformer VI on the access line I, is equipped with station transformer VII on the access line II, the access line I is connected with first busbar I section, the access line II is connected with first busbar III section, and double power automatic transfer switch is equipped between the access line II and access line I.

The utility model relates to the technical field of fire extinguisher production equipment, in particular to fire extinguisher valve assembly equipment which comprises a bearing frame, a conveying mechanism and a screwing mechanism. According to the fire extinguisher bottle body conveying device, the conveying mechanism is fixed to the bottom of the connecting shell, the first motor is started to enable the conveying belt to rotate, and therefore the fire extinguisher bottle body can be conveyed conveniently, the conveyed fire extinguisher bottle body can be limited conveniently through the two limiting assemblies, and the conveyed fire extinguisher bottle body is stable; then a clamping plate and a rubber pad are moved by starting a second motor, so that the fire extinguisher bottle body is conveniently clamped and fixed, the fire extinguisher bottle bodies of different sizes can be clamped and fixed, the inner side wall of a first connecting notch is in extrusion contact with the end of a valve by starting a second air cylinder and a fourth motor, and then the inner side wall of a second connecting notch is in extrusion contact with the end of the valve by starting a third motor; and the two connecting plates are rotated, and the two rotating connecting plates are used for conveniently screwing the valve.

The utility model discloses an assembly type buckling-restrained brace which comprises a cross-shaped steel plate, an outer restraining sleeve arranged on the periphery of the cross-shaped steel plate in a sleeved mode and end plates connected to the two ends of the outer restraining sleeve, and at least one end plate is provided with a cross-shaped open hole for the cross-shaped steel plate to penetrate through. The cross-shaped steel plate comprises a friction section and a buckling energy dissipation section, and the cross section size of the buckling energy dissipation section is smaller than the cross section size of other parts of the cross-shaped steel plate. The friction section is provided with a friction energy dissipation structure, the friction energy dissipation structure at least comprises a friction plate attached to the friction section, and the friction plate and the friction section move relatively in the length direction of the cross-shaped steel plate to achieve friction energy dissipation. Fixed-point yield is achieved by arranging the friction section and the buckling energy dissipation section on the cross-shaped steel plate, specifically, the friction energy dissipation structure is arranged on the friction section to guarantee that the cross-shaped steel plate is not damaged, and the friction energy dissipation effect of the device during small earthquakes is achieved.

The invention relates to the technical field of lift trucks, in particular to an assembly assisting lift truck which comprises a bottom plate, moving components are arranged at four corner angles of the lower end of the bottom plate, a lifting part is mounted at the upper end of the bottom plate, an adjusting part is arranged at the front end of a movable part of the lifting part, and two guide plates are symmetrically mounted at the front end of the adjusting part. The upper ends of the transverse parts of the two guide plates are slidably connected with sliding plates, telescopic equipment is arranged at the front end of the adjusting part, a push block is installed at the front end of the movable part of the telescopic equipment, supporting arms are movably installed at the inward ends of the two sliding plates, the other ends of the two supporting arms are movably arranged with the front end of the push block, and a pushing part is installed at the upper end of the push block. And the outward ends of the front parts of the two guide plates are both provided with position adjusting pieces, through the design, equipment to be assembled is conveniently assembled, the probability that assembled accessories are damaged due to factors such as hoisting is effectively reduced, the labor intensity is effectively relieved, the assembling time is effectively shortened, and the assembling effect is effectively guaranteed.

This application discloses an automated circular cutting mechanism, relating to the field of machining. It includes a base with at least multiple processing positions, each processing position comprising a drive unit, a transmission unit, and a clamping and cutting unit. The drive unit is mounted on the base and drives the transmission unit. The transmission unit is connected to the drive unit and drives the clamping and cutting unit to perform circular trajectory cutting of different diameters. The clamping and cutting unit is mounted on the transmission unit and is used to cut coaxial holes on the surface of box-type parts. This application efficiently performs circular trajectory cutting of different diameters on the surface of box-type parts, ensuring that the cut holes have good coaxiality.

The invention belongs to the technical field of electronic products, and discloses a loudspeaker and an electronic product. The loudspeaker comprises a loudspeaker single body and a shell, the loudspeaker single body comprises a magnetic part assembly, a vibration assembly and a magnet yoke, and the magnetic part assembly is arranged on the magnet yoke; an accommodating cavity and a mounting port communicated with the accommodating cavity are arranged in the shell, the shell is provided with a sound outlet, the loudspeaker monomer is arranged in the accommodating cavity, the accommodating cavity is divided into a front cavity and a rear cavity by the vibration assembly, the sound outlet is communicated with the front cavity, the magnetic part assembly is arranged in the rear cavity, and the sound outlet is communicated with the rear cavity. The magnet yoke is arranged on the shell and seals the mounting opening. According to the loudspeaker, it can be guaranteed that an operator observes the matching condition of the loudspeaker single body and the shell in the assembling process, the assembling effect is guaranteed, the stability of the loudspeaker single body is improved, and the product quality is guaranteed.

This utility model discloses a rigid reflector and a direct-lit backlight module. The rigid reflector includes: a reflector formed by injection molding; the reflector includes a reflector body and multiple reflective cups, which are arranged in a matrix on the reflector body; the end face of the reflector body facing away from the multiple reflective cups is a planar structure, and a fixing structure for fixing a back plate is provided on the periphery of the reflector body. The direct-lit backlight module includes: a back plate, a lamp plate, optical elements, and the aforementioned rigid reflector. The lamp plate includes a substrate and multiple LEDs, which are arranged in a matrix on the substrate. The back plate, substrate, reflector, and optical elements are stacked sequentially, and the LEDs are located at the opening of the reflector; the planar structure is fixedly connected to the substrate, and the inner sidewall of the back plate is fixedly connected to the fixing structure. This utility model can improve the problem of reflector warping during assembly and has the characteristics of efficient assembly, making the direct-lit backlight module have the characteristics of high assembly efficiency and good optical effect.

The invention discloses assembling equipment for a mining speed reduction type permanent magnet frequency conversion and speed regulation integrated machine, and relates to the technical field of assembling equipment. Comprising support plates which are symmetrically arranged, a roller type conveying belt is arranged between the two support plates, a box body is placed on the roller type conveying belt, a worm is arranged on the box body, a discharging plate is arranged on the support plates, a discharging groove is formed in the discharging plate, and a bearing is arranged in the discharging groove. A pushing assembly is arranged on the outer side face of the discharging plate, installation of a bearing and a worm is completed through the pushing assembly, an intermittent discharging assembly is arranged on the discharging plate, and a positioning assembly is arranged on the intermittent discharging assembly. Through cooperation of the pushing assembly and the intermittent discharging assembly, accurate installation of a bearing and a worm can be automatically completed, meanwhile, accurate adjustment of the position of a box body is ensured through the positioning assembly, manual operation errors are reduced, and the efficiency and quality of the assembling process are improved.

The present invention relates to the field of battery technology, and discloses a battery and a battery pack, including: a main body, a rivet hole is opened on the side of the main body, the side of the main body includes a flat plate area and a rivet area, and the rivet hole is arranged corresponding to the rivet area; along the width direction of the side of the main body, the distance between the hole edge of the rivet hole and the edge of the side of the main body is b, the width of the flat plate area is T, and the width of the rivet area is T2, satisfying 10≤y≤14, y is a real number. The present invention sets the width of the main body corresponding to the rivet area to be slightly narrower than the width of the main body corresponding to the flat plate area. After the pole assembly is riveted in the rivet hole, the width of the main body corresponding to the rivet area is increased and can be consistent with the width of the flat plate area, thereby improving the consistency of the width of the main body, ensuring the assembly effect of the main body and other components, and improving the quality of the battery.

According to the waterproof radio frequency connector with the high protection performance, a transverse cavity and a vertical cavity are perpendicularly communicated and penetrate through each other, a guide connection shell is arranged in one port of the vertical cavity in an inserted mode, and a sealing groove is formed in the round corner position of the inserted connection end of the guide connection shell; a sealing groove is formed in the round corner of the inserting end of the right-angle communicating shell on the outer side of the transverse cavity, the sealing groove is in the shape of a vertical angle annular groove, a sealing rubber block is embedded in the sealing groove, and a pressing protruding edge is arranged at the joint of the outer side of the sealing rubber block and the inner side of the right-angle connecting shell or the inner side of the inserting shell. The guide connection shell, the insertion connection shell and the right-angle communication shell are connected and fixed through the sealing rubber blocks and the sealing rubber, so that stable connection of the shells can be guaranteed, the sealing rubber blocks can be pressed down and sealed through mutual cooperation of the sealing rubber blocks and the pressing convex edges, and the waterproof performance of the shells is further improved.

The utility model provides a universal type structural part gluing assembly spiral pressing tool. The universal type structural part gluing assembly spiral pressing tool comprises a lower bearing plate, a supporting wall plate, an upper bearing plate, a screw rod sleeve and a pressing screw rod. The lower ends of the two supporting wall plates are perpendicularly installed at the left end and the right end of the lower bearing plate respectively, the top ends of the supporting wall plates are connected with the upper bearing plate arranged in a crossing mode respectively, and a part containing area is defined by the supporting wall plates. Screw sleeves are fixedly installed at the positions, corresponding to the part containing areas, of the left end and the right end of the upper bearing plate correspondingly, and corresponding pressing screws are installed in the screw sleeves in a threaded mode. Pressing of parts is achieved through the pressing screws which are arranged on the upper bearing plate at intervals in the left-right direction, the assembly effect of the parts after gluing is guaranteed, and the pressing device is simple in structural design, reliable in performance, convenient to operate and capable of being widely applied to gluing procedures of various products.

The utility model relates to the technical field of automobile exterior trimming part assembly, in particular to a threshold buckle, and aims to solve the problem of airtightness of a mounting hole of the threshold buckle. The threshold buckle comprises a buckle body, a sealing ring and closed-cell foam. Wherein the buckle main body is provided with a first clamping part and a positioning part, the first clamping part and the positioning part are used for being connected with a body-in-white, and the positioning part can position the threshold skin to the body-in-white; a second clamping part is arranged on the other side of the buckle main body and is used for being connected with a threshold skin; the sealing ring is connected with the buckle main body through double-color injection molding, and the closed-cell foam is bonded with the buckle main body through a double-sided adhesive tape. Through the structural design, on the premise that the assembling performance of the threshold buckle is guaranteed, the sealing structure of the threshold buckle is improved, the waterproof performance of the threshold buckle is improved, and meanwhile the water leakage risk of a vehicle is reduced.

The utility model discloses a lampwick positioning device of aromatherapy candle production relates to aromatherapy candle production technical field, it includes positioning mechanism and fixed installation control panel of workbench front edge outer wall, the top of workbench is equipped with candle mould, and the upper portion concentric of candle mould is equipped with lampwick body, the positioning mechanism includes mould positioning subassembly and lampwick positioning subassembly. The utility model is provided with lampwick positioning subassembly, and the output shaft synchronous elongation of two electric jars is controlled through control panel control to control two rubber clamping blocks and center to draw together and make lampwick body center positioning, can accurate guarantee that lampwick body and candle mould are in concentric state, then the output shaft synchronous contraction of two electric push rods is controlled through control panel control to control two lift lugs and move down, the lampwick body that is clamped down moves accurate insertion to the central region of candle mould gradually at this moment, thereby guarantee that lampwick is not easy to deviate, help to improve the combustion performance and appearance of aromatherapy candle.

The present invention discloses a two-stage pinning mechanism and a main and auxiliary gear assembly method, which are applied in the field of mechanical transmission technology. The key points of its technical solution are: a two-stage pinning mechanism, comprising a vertically installed mounting seat and a telescopic component fixedly connected to the top of the mounting seat, the telescopic end of the telescopic component is fixedly connected to a mounting plate, the end of the mounting plate away from the telescopic component is provided with a clamping component based on a plurality of clamping claws to clamp a hollow pin, and an elastic abutting component that abuts the hollow pin and drives the hollow pin to insert into the pin hole of the main gear, the clamping component is fixedly connected to a plurality of supporting blocks that abut the end face of the main gear to realize the complete insertion of the hollow pin into the pin hole of the main gear; the technical effect is: ensuring that the hollow shaft is completely inserted into the pin hole without affecting the assembly effect of the main and auxiliary gears.

The invention relates to a welding machine, and provides a double-station capacitor box automatic welding device and welding method in order to solve the problems that an existing welding operation mode is low in working efficiency, high in labor cost and the like, and the double-station capacitor box automatic welding device comprises a double-layer platform, a welding robot, an assembling assembly, a conveying assembly and two clamp assemblies; the double-layer platform comprises a lower-layer platform and an upper-layer platform, the assembling assembly comprises a rotating platform, an assembling support and two sets of assembling roller ways, the bottom of the assembling support is fixed to the rotating platform, and the top of the assembling support extends to the position above the upper-layer platform. Assembly lifting rails are arranged on the assembly support, and the two sets of assembly roller ways are connected to the two assembly lifting rails correspondingly. The transportation assembly comprises a front-end transportation assembly and a rear-end transportation assembly; the two sets of clamp assemblies are arranged at the top of the assembling support, the assembling lifting track drives workpieces on the assembling roller way to ascend into the corresponding clamp assemblies, and the rotating platform drives the workpieces in the clamp assemblies to rotate to the position below the welding robot to be welded.

The utility model provides a ceramic rod distributor which comprises a ceramic rod storage bin and a distributing lifting part, the ceramic rod storage bin is used for containing ceramic rods, the distributing lifting part is arranged on one side in the ceramic rod storage bin and abuts against one side of each ceramic rod, and the ceramic rods can roll to the top of the distributing lifting part. The distributing lifting part can drive the single ceramic rod to move upwards along the bin wall of the ceramic rod storage bin. The ceramic rod feeding device has the advantages that ceramic rods are separated and fed one by one, the assembling efficiency is improved, the assembling effect is guaranteed, the structure is simple, and operation is convenient and fast.

The utility model relates to the technical field of motor stator protection, in particular to a compressor motor stator with a lead side protective cover, which comprises a stator core, an upper framework and a lower framework, the upper framework is arranged at the top end of the stator core, the lower framework is arranged at the bottom end of the stator core, and a plurality of stator coils with consistent structures are arranged in the stator core. The adjacent stator coils are connected in series through bridging lines, the bridging lines are arranged along the outer edge of the top end of the upper framework, the top end of the upper framework is provided with an insulation protection cover, the insulation protection cover comprises first insulation plates and second insulation plates, the first insulation plates are arranged on the outer edge of the upper framework at intervals, and the second insulation plates are circular ring type insulation plates. One end of the second insulating plate is connected with the top of the first insulating plate, the inner diameter of the second insulating plate is larger than or equal to the inner diameter value of the upper framework, and the outer diameter of the second insulating plate does not exceed the outer diameter value of the stator core.

The utility model belongs to sensing equipment technical field relates to a pressure sensing device, including shell and cooperation setting on the shell upper cover, the shell and upper cover form the accommodation space between, be provided piezoelectric wafer in the accommodation space, piezoelectric wafer and shell fixedly bond between, and piezoelectric wafer and shell still have the lug between connection, the shell has the recess portion with piezoelectric wafer coaxial setting in, and the convex part correspondingly piezoelectric wafer circumferential setting, piezoelectric wafer fixedly bond on the convex part, the lug one side and piezoelectric wafer bond, the other side and the convex rib on the shell corresponding connection. The utility model can improve the voltage of knock feedback, and its feedback highest voltage is about 10V, has simple structure, and it is convenient to assemble, stable performance, effect is improved obviously and so on advantage.

The utility model provides a cosmetic vacuum bottle piston assembling device which comprises a vibration disc, a reversing assembly and a piston assembling assembly. The reversing assembly is connected with the vibration disc through a conveying guide rail and used for detecting the forward and reverse directions of the pistons and reversing the reversed pistons. The reversing assembly comprises a height sensor used for detecting the forward direction and the reverse direction and a reversing air cylinder used for reversing. The piston assembling assembly is connected with the reversing assembly through a material distributing guide rail and used for assembling pistons into bottle bodies. The piston assembling assembly comprises a positioning base used for positioning the bottle body and a piston suction head movably installed on the upper side of the positioning base, and the piston suction head clamps the piston and loads the piston into the bottle body. According to the cosmetic vacuum bottle piston assembling device, the defects that an existing cosmetic packaging bottle piston is low in assembling efficiency and poor in assembling effect are overcome.

The utility model discloses an automatic assembly line for cabinet doors. The automatic assembly line comprises a door head conveying mechanism, a core plate conveying mechanism, a door stile gluing mechanism, a nailing mechanism and a belt conveyor which are sequentially arranged on a machine frame beside a main conveying belt. The two groups of nailing mechanisms are arranged in parallel, and the main conveying belt behind the door stile gluing mechanism is provided with a flow dividing machine used for conveying glued cabinet doors to the corresponding nailing mechanisms; a converging machine for conveying the nailed cabinet door to the belt conveyor is arranged on the main conveying belt at the front end of the belt conveyor; an operation cabinet, an air pressure control cabinet and a nailing machine operation cabinet are arranged beside the main conveying belt. According to the cabinet door assembling machine, automatic cabinet door production is achieved, the labor intensity of operators is reduced, the cabinet door assembling efficiency is improved, and the cabinet door assembling effect is guaranteed.

The invention relates to a surface difference adjusting device which comprises a supporting plate and a rotating disc structure. The supporting plate is used for bearing a to-be-adjusted part, the rotating disc structure is located on one side of the supporting plate and provided with a protruding part, an open groove is formed in the position, corresponding to the protruding part, of the to-be-adjusted part, and the protruding part is located in the open groove; the axis of the rotating disc structure and the rotation center of the open groove are eccentrically arranged, so that when the rotating disc structure rotates, the protruding part slides along the open groove to drive the to-be-adjusted piece to ascend and descend relative to the supporting plate, and therefore the height of the to-be-adjusted piece can be changed; in this way, the to-be-adjusted part can be adjusted to enable the surface difference between the to-be-adjusted part and other parts to be within the allowable range, and therefore the problem that the whole vehicle assembling effect is poor due to the surface difference is avoided.

The utility model relates to domestic appliance technical field discloses a double inner container water heater. The double inner container water heater includes shell, end cover and two inner containers, is provided with the accommodation space in the shell, and the end of shell is provided with the end opening that is linked with the accommodation space, two inner containers are side by side arrangement, and all are accommodated in the accommodation space, at least part of the outer edge of end cover is linear segment, the shape of end opening is compatible with the shape of end cover, the position of each inner container on end cover is provided with the installation port and the deformation avoidance space that is linked with the installation port, and end cover is capped in end opening, and the bung of each inner container is installed in the corresponding installation port. The double inner container water heater can avoid the situation that end cover appears in the injection moulding production process, guarantees the finished product quality of end cover, and can guarantee the assembly effect and assembly efficiency between end cover and inner container and between end cover and shell.