44results about How to "Realize fixed assembly" patented technology

The invention provides a driving motor and an air conditioner indoor unit. The driving motor comprises a motor body and a motor shaft cap. The motor body is provided with a motor shaft, which is cooperated with a shaft hole. The motor shaft cap is disposed on the end part of the motor shaft in a sleeved manner, and can be inserted in the shaft hole. The driving motor provided by the invention is advantageous in that by arranging the motor shaft cap on the end part of the motor shaft, when an air deflector is detached, a finger can only touch the motor shaft cap through an air deflector installation hole, and cannot touch the metal motor shaft, and therefore safety hidden troubles caused by the exposed metal motor shaft are effectively solved; the structure of the motor shaft cap is simple, the size of the motor shaft is small, and the production cost of the motor shaft is low, and when the driving motor is assembled with the air deflector, the motor shaft cap and the motor shaft are together inserted in the air deflector shaft hole, and therefore by using an original assembly structure, the normal assembly of the driving motor and the air deflector is guaranteed, and the safety problem of the driving motor is solved in a cost effective way, and a good market popularization prospect is provided.

The invention discloses a washing machine countertop locking device, and relates to the technical field of washing machines. The washing machine countertop locking device comprises a first locking piece installed at the top of a washing machine cabinet and a second locking piece installed on a washing machine countertop, and the first locking piece and the second locking piece are clamped. A washing machine comprising the washing machine countertop locking device is also disclosed. Through clamping the first locking piece installed at the top of the washing machine cabinet and the second locking piece installed on the washing machine countertop, fixation and assembly of the countertop is achieved, compared with an existing countertop assembly structure, the structure is simple, the washing machine is not required to be moved, and disassembly and assembly are convenient.

The embodiment of the invention provides electronic equipment, and belongs to the technical field of communication. The electronic equipment comprises a first shell, a second shell and a first key; and the first key comprises a function module assembly, a function module FPC, a key sheet, a key pad and a key FPC. The key FPC, the key pad, the key sheet and the function module assembly are sequentially arranged in the accommodating space from inside to outside; the function module assembly is electrically connected with the function module FPC; the function module assembly and the key pad are fixed on the key sheet; and an assembling part is arranged on the key pad, and the key pad is assembled with the second shell through the assembling part. In the embodiment of the invention, the key pad of the first key is assembled on the second shell through the assembling part, so that the whole function module is fixedly assembled in the electronic equipment shell, an original plastic or stainless steel bracket is omitted, the space of the electronic equipment is saved, and meanwhile, the saved size can be used for adding glue to the electronic equipment shell; therefore, the strength of the whole machine can be improved.

The invention provides a display module. The display module comprises a cover plate, a middle frame, a connecting ring for connecting the cover plate and the middle frame, and a display panel, the connecting ring is arranged on the peripheral side of the cover plate, and the cover plate, the middle frame and the connecting ring jointly define a containing space. The display panel is arranged in the accommodating space, and a gap is formed between the display panel and the connecting ring; wherein the cover plate is provided with a first surface facing the connecting ring, the connecting ring is provided with a second surface facing the first surface, and the distance between the first surface and the second surface is gradually increased in the direction, away from the cover plate, of the display panel, so that a dispensing opening communicated with the gap is formed between the first surface and the second surface; and a glue structure which is injected from the direction of the gap and is used for connecting the cover plate and the connecting ring is arranged in the dispensing opening. By means of the mode, the black edge of the display module can be reduced, and the screen-to-body ratio of the display module can be increased.

The invention relates to a multi-function high-speed packing paper equipment and a high-speed packing paper method. The equipment comprises a whole-machine platform; and a back conveying device, a front conveying device provided with an adsorbing device, a braking and fine adjustment device, a packing paper cutting and clamping device and multiple packing paper transition pulleys are mounted on the whole-machine platform. The front conveying device provided with the adsorbing device is adopted, an air suction hole part is designed into a longitudinal long air suction hole, thus packing paper can be adsorbed stably and effectively, and dispersed air suction leaks are avoided. The packing paper braking and fine adjustment device is arranged, the braking and center correction functions for the whole-roll of packing paper can be realized, and the packing paper can be prevented from deviating from a track during clamping. A packing paper conveying device of the packing paper cutting and clamping device adopts multiple reclining driven rollers and a packing paper clamping driving roller, placing and stop actions of the packing paper are realized through opening and closing of the packingpaper clamping driving roller, and the packing paper is effectively ensured to move on the conveying track and is prevented from deviating from the center of the track.

The invention provides an oscillating structure and a fan assembly or an electric heater assembly comprising the same. The oscillating structure comprises a base (1) and a rotary plate (2). When the base (1) and the rotary plate (2) are assembled, the axial lead of the axis of the base (1) coincides with the axial lead of the axis of the rotary plate (2); the axis of the rotary plate (2) is supported by the axis of the base (1); and supporting parts are arranged on the parts, in two or more positions on the radial outer sides / side of the axes / axis, of the rotary plate (2) and / or the base (1) and used for supporting the rotary plate (2) on the base (1). By arranging the supporting parts at the axis and in two or more positions on the radial outer side of the axis, a plane can be determined through the three or more supporting points jointly, and the effect that the rotary plate is stably supported on the base can be ensured; and the situation that the oscillating structure shakes during operation is avoided, and the oscillating structure operates stably and smoothly in the working and operation process.

The invention discloses an overall steel structure fabricated movable environment-friendly public toilet. The overall steel structure fabricated movable environment-friendly public toilet comprises abottom frame, vertical columns fixedly inserted into the upper end of the bottom frame, a top frame fixedly inserted into the upper ends of the vertical columns, and wallboard components arranged between the vertical columns. Corner combination hubs are arranged at the positions of the four corners of the bottom frame and the four corners of the top frame. Corner connection positioning parts of the bottom frame, the top frame and the wallboard components are composed of the corner combination hubs and middle fixed seats, by means of connection fixing, fixed assembly can be completely achievedthrough insertion and bolt connection, welding operation is not needed, flame cutting is not needed during disassembly, the environment-friendly public toilet can be directly disassembled, and therefore the utilization rate of materials is increased; and the bottom frame, the top frame, the vertical columns and the wallboard components can be rapidly and precisely positioned and assembled, the corner combination hubs, the middle fixed seats, standard pipe fittings and standard plates are used for positioning connection, the whole process is high in positioning precision, and the assembly quality is improved.

An upright lamp having length adjustable lamp-post includes a lamp-post (10), a plug (211) mounted on the lamp-post (10), and a fastener (30) configured for connecting the lamp-post (10) and the plug (211). The lamp-post (10) has a jack (11) opened therein. The plug (211) is inserted into the jack (11). The plug (211) has a uniform cross section area and cross section shape with that of the jack (11). A hole (213) is opened in the plug along axial direction thereof and is configured for receiving the fastener (30). The hole (213) is intersected with a side wall of the plug (211). When the fastener (30) is threaded into the volume formed by the plug (211) and the lamp-post (10), the interference fit joint between the fastener (30) and the volume is realized as the volume is less than that of the fastener (30). And then, the mounting base module (20) and the fastener (30) are assembled onto the lamp-post (10).

The invention discloses a sub-connector which comprises a plurality of wafers installed in parallel, each wafer comprises an insulator and shielding plates installed on the two sides of the insulator, differential pairs are arranged in the insulators, the shielding plates on the two sides are bent at the crimping ends of the differential pairs to form a plurality of shielding cavities, and each shielding cavity accommodates the crimping end of one differential pair. The two sides of the wafer are both provided with the shielding plates, and the shielding plate on each side is bent in the direction orthogonal to the shielding plate to form the folded sheet so as to form the side wall orthogonal to the shielding plate, so that the three-dimensional and circumferential differential pair isolation cavity is formed in the contact area of the differential pair and the circuit board. In the view from the crimping end, the differential pairs are fully surrounded by the shielding plate and the folding sheet, and at the same time, a GGSSGGSSGG arrangement form is still formed at the crimping end, so that the shielding effect is ensured.

The invention relates to a connector and an insertion core assembly thereof. The insertion core assembly comprises an insulator, an insulation pressing plate and a metal end cover which are sequentially arranged in a front-back direction; the insulation pressing plate is fixedly arranged on the front side surface of the metal end cover so as to form a mounting base body; the insulator is fixedly arranged on the mounting base body; front power terminal holes and rear power terminal holes are correspondingly matched with each other and provided with power terminals in a limiting manner; front signal terminal holes and rear signal terminal holes are correspondingly matched with each other and provided with signal terminals in a limiting manner; a front grounding terminal hole and a rear grounding terminal hole are correspondingly matched with each other and provided with a grounding terminal in a limiting manner; the grounding terminal is conductively connected with the metal end cover; and corresponding wire passing holes for allowing power cables electrically connected with the power terminals and signal cables in signal connection with the signal terminals to pass are formed in themetal end cover. With the connector and the insertion core assembly thereof of the invention adopted, the insulation pressing plate, the insulator and the metal end cover can be relatively fixed after being assembled; and the insulator, the insulation pressing plate and the metal end cover can be fixedly assembled without a rear cover required.

The invention discloses a cable connection terminal, which belongs to the field of electrical technology. The cable terminal includes a connection plug assembly and a connection female head assembly. The wiring plug assembly includes a first wire tube, a first connecting body and a connecting post, one end of the first connecting body is connected to the first connecting pipe, the other end of the first connecting body is connected to the connecting post, and the side wall of the connecting post is along the length of the connecting post. A guide block is provided in the radial direction, and the wiring female head assembly includes a second wiring tube and a second connecting body, one end of the second connecting body is connected to the second wiring tube, and the other end of the second connecting body is provided with a The connection groove, the connection groove and the connection column are arranged opposite to each other, the side wall of the connection groove is provided with a guide groove corresponding to the guide block one by one, and the bottom end of the guide groove is connected with an annular card groove, and the card groove is arranged circumferentially along the central axis of the connection groove , the bottom end of the connecting groove is provided with a first spring assembly, and when the guide block is located in the slot, the connecting column compresses the first spring assembly. The cable terminal has high reliability.

The invention belongs to the technical field of high-voltage switches, and particularly relates to an insulator assembly and high-voltage switch equipment using the same. The insulator assembly comprises an insulator and a sensor; the insulator comprises a main conductor, a metal flange and an insulating part, and an electrode mounting hole extending into the insulating part is formed in the peripheral surface of the metal flange; the sensor comprises an electrode penetrating through the electrode mounting hole, the electrode is used for sensing a voltage signal of the main conductor, and the electrode is provided with a wiring part used for being connected with an electrified display device; the electrode is provided with an electrode inner end facing the main conductor, the electrode inner end can be fitted with the hole bottom of the electrode mounting hole, and the electrode inner end is used for being matched with the main conductor to form a detection capacitor; the insulator assembly further comprises a cover plate and an elastic assembly, and the cover plate is fixedly installed on the metal flange and used for jacking the electrodes in the direction where the main conductor is located; and the elastic piece is arranged in the electrode and / or between the electrode and the cover plate so as to press the inner end of the electrode against the bottom of the electrode mounting hole.

The invention discloses a reinforcement cage and steel formwork integrated transverse fabrication structure, which comprises a fabricating platform and a jack matched with the steel formwork. A reinforcement cage is placed into a steel formwork, and the top end of the steel formwork is fixedly connected with the jack through a steel formwork top sealing plate; the end, at the top end of the steelformwork, of a main reinforcement in the reinforcement cage is externally provided with an external thread; the two ends of a main reinforcement connecting pipe are provided with external threads correspondingly; the end, at the top end of the steel formwork, of the main reinforcement in the reinforcement cage is in threaded connection with one end of the main reinforcement connecting pipe througha main reinforcement connecting sleeve provided with an internal thread; and the other end of the main reinforcement connecting pipe penetrates through a gap of the jack to be in threaded connectionwith a main reinforcement fixing sleeve provided with an internal thread. Through assembly of a first L-shaped steel support formwork and a second L-shaped steel support formwork, the reinforcement cage is placed into the steel formwork, through cooperation of the jack, the main reinforcement connecting pipe, the main reinforcement connecting sleeve and the main reinforcement fixing sleeve, the reinforcement cage and the steel formwork are fixed into a whole, later overall hoisting of the reinforcement cage and the steel formwork is facilitated, and thus the construction process is simplified.

The invention provides a power battery cover plate and a power battery using the same. The power battery cover plate comprises a cover plate base body with a pole column unit, wherein the pole column unit comprises a pole column base and a pole column body; the pole column base is in sealing and blocking fit with the lower side surface of the cover plate base body by a center sealing ring; the pole column body is arranged on the pole column base; the pole column body is provided with a penetrating section which can penetrate out of a pole column hole in the upper edge of the cover plate base body and extend in the up-down direction; the outer periphery surface of the penetrating section is provided with a blocking slot extending or distributed around the pole column body; a lifting piece which is in blocking fit with the upper side surface of the cover plate base body is arranged outside the penetrating section in a sleeving manner; elastic inverted pokes are arranged on the lifting piece, and the elastic inverted pokes extend along the radial direction of the pole column body, and upwards turnover to be inserted into the blocking slot so as to lift upwards the pole column unit. According to the power battery cover plate and the power battery using the same, the assembling process is fast, easy and convenient, the lifting piece is simple in manufacture technique, and the whole design and manufacture cost is relatively reduced.

The invention discloses a heavy goods shelf convenient to disassemble and assemble. The heavy goods shelf comprises a base, wherein a plurality of steel plates are arranged inside the base, and supporting columns are arranged at the four corners of the upper end of the base; reinforcing inclined columns are arranged on the inner sides of the supporting columns, mounting seats are fixedly connectedto the bottom ends of the supporting columns, and pin holes are formed in the side walls of the upper portions of the supporting columns; connecting pieces are arranged at the upper ends of the plurality of supporting columns, mounting cavities are formed inside the connecting pieces, penetrating holes are formed in the side walls of the mounting cavities, and pins are arranged on the outer sidewalls of the connecting pieces; and supporting plates are arranged on the inner sides of the plurality of connecting pieces, and a plurality of bearing plates are arranged in the middle portions of the interiors of the supporting plates. The whole goods shelf is assembled through the supporting columns, the connecting pieces and the pins, after the connecting pieces are arranged on the supportingcolumns in a sleeving mode, the pins are inserted into the penetrating holes and penetrate through the pin holes to be fixed through nuts, and fixed assembly is achieved; and if part of components ofthe goods shelf are aged and damaged in the later period, the pins can be disassembled, then the goods shelf can be disassembled, and the damaged components are replaced or maintained, so that disassembly is convenient, and the use cost of the goods shelf is reduced.

The invention discloses a semi-automatic assembly tool. The semi-automatic assembly tool comprises a base; two sets of assembly mechanisms are respectively arranged at the left part and the right part of the base; each set of assembly mechanisms includes feeding modules and product fixing module; the feeding modules include grooves, feeding cylinders, feeding plates and feeding push blocks; fittings are arranged in the grooves; the feeding plates extend in the base, and are connected with the feeding cylinders; the feeding push blocks are fixed on the feeding plates for pushing the fittings; each set of product fixing modules includes product fixing cylinders and product fixing blocks; product fixing grooves are formed in the base; the products are arranged in the product fixing grooves; two product fixing blocks positioned at the left part and the right part of the base fix the products; the product fixing grooves are communicated with the grooves; and screw entering holes are formed in the product fixing blocks. The tool can quickly realize fixed assembly of the products and the fittings, is higher in working efficiency, saves both time and labors, cannot damage the products, and guarantees the quality of the products.

The invention provides a micro vibration motor with convenient assembly of balance weight blocks. The micro vibration motor comprises a motor body, a rear cover is installed on the tail part of the motor body, a power line is connected to the rear cover, and a combined balance weight block is installed on a main shaft of the motor body. The combined balance weight block comprises a hollow balanceweight block, and the hollow balance weight block and a solid balance weight block jointly form an integral cylinder balance weight block structure. The shape structure of the balance weight blocks ofthe micro vibration motor balance weight block adopts a cylindrical integral structure, the micro vibration motor can be matched with a feeding vibration plate and automatic motor assembling equipment to realize automatic feeding and assembling, fast and accurate positioning is ensured in the assembly process, and the assembling efficiency is improved.

The invention relates to a double-color extrusion lamp strip seamless docking connector capable of supplementing electric power and relates to the technical field of an LED lamp strip connector. The connector includes a lamp strip body, a terminal wire and a fixing assembly, wherein one end of the terminal wire is detachably assembled and electrically connected with the lamp strip body, the otherend of the terminal wire is electrically connected with an external power supply, the terminal wire is used for continuously supplementing the power for the lamp strip body, a part of the fixing assembly is assembled with one side of the lamp strip body near the terminal wire, the other part of the fixing assembly is assembled with the terminal wire, and the fixing assembly is used for further fixing the lamp wire body and the terminal wire to prevent the terminal wire from being separated from the lamp belt body. The connector is advantaged in that not only can a male terminal be effectivelyprevented from being separated from the lamp strip body, but also the additional power can be provided for the lamp strip body, and the connector further has advantages of good seamless connection effect, good pull-off resistance, reliable and stable connection, high coordination tightness, convenient installation, strong performance durability and good power replenishment effect.

The invention discloses an integrated horizontal assembly structure of a reinforcing bar cage and a steel formwork, comprising an assembly platform and a top support matched with the steel formwork. Fixed connection, one end of the main reinforcement in the reinforcement cage located at the top of the steel formwork is provided with external threads, both ends of the main reinforcement connection pipe are provided with external threads, one main reinforcement in the reinforcement cage is located at the top end of the steel template and one end of the main reinforcement connection pipe The other end of the main rib connecting pipe is threadedly connected with the main rib fixing sleeve provided with the internal thread through the jacking gap through the main rib connecting sleeve provided with the internal thread. In the invention, the reinforcement cage is placed in the steel template by assembling the first L-shaped steel support template and the second L-shaped steel support template, and the reinforcement cage is assembled by the cooperation of the top bracket, the main reinforcement connection pipe, the main reinforcement connection sleeve and the main reinforcement fixing sleeve. It is integrated with the steel formwork, which is convenient for the overall hoisting of the steel cage and the steel formwork in the later stage and simplifies the construction process.

The utility model relates to the field of circuit boards, in particular to a short circuit prevention circuit board for energy storage equipment, a circuit board body is mounted on an external mounting part, mounting cavities are vertically formed in corners of the circuit board body in a penetrating manner, and mounting columns corresponding to the mounting cavities are fixedly arranged above the mounting part in an adaptive manner; a rotating column is rotationally arranged on the circuit board body and located above the mounting cavity, an adjusting cavity is formed in the bottom of the rotating column, and limiting pieces are fixedly arranged on the two sides of the bottom of the inner wall of the adjusting cavity. According to the utility model, through the mutual clamping between the limiting piece in the rotating column and the limiting cavity in the mounting column, the fixed assembly of the circuit board body can be realized, the assembly mode is simple and convenient, short circuit caused by the contact between the bolt and the circuit board body in the assembly process is avoided, and the use of workers is facilitated.

The invention relates to a GIS transition bus and a GIS, the transition bus comprises a transition connection shell, a support insulator and a connection conductor, the transition connection shell is used to conveniently realize fixed assembly of a three-phase common box cylinder and a single-phase voltage transformer, the transition connection shell has a smooth reducing section, the radial size of the front end of the transition connection shell is smaller than that of the rear end; and the connection conductor is provided with an inclined extension section, so that a conductive plugging terminal is arranged corresponding to the center of the transition connection shell. According to the transition bus for the GIS, fixed assembly of the three-phase common-box cylinder and the single-phase voltage transformer is conveniently achieved through the transition connection shell, the single-phase voltage transformer and any phase of conductor can be conductively connected through the connecting conductor matched with the conductive insert, electricity taking operation is achieved, and through the inclined extension section on the connection conductor, centering arrangement of the single-phase voltage transformer is convenient to achieve, centering outgoing is convenient, and the overall arrangement coordination of GIS parts is improved.

The present invention relates to a connector assembly, comprising: a cable connector comprising a cable and connectors connected to both ends of the cable, wherein each connector comprises a connector housing and terminals installed in the connector housing; PCB assemblies which comprise PCBs and outer frames arranged on the PCBs. The connectors are respectively inserted into the corresponding outer frames, so that the terminals are electrically contacted and conducted with the PCBs, and the two PCB assemblies are electrically connected; the connector housings and the outer frames are locked through buckles; and the connectors and the corresponding PCBs are in elastic contact conduction. By means of the technical scheme, the outer frames and the PCBs are matched to form the insertion holes for the connectors to be inserted, so that the terminals in the cable connectors and the PCBs form a stable contact conduction relation, a signal transmission link can be effectively simplified, the overall size is reduced, and high-speed interconnection between two PCB assemblies is achieved.

The present invention discloses a raceway apparatus, wherein the rear portion of an inner raceway and an outer raceway matched with a supporting roller form a snapping connection, the outer raceway is provided with a side plate sleeved on the outer portion of the outer periphery surface of the inner raceway, and is provided with bottom plates arranged on the outer portion of the rear end surface of the inner raceway in a parallel manner, a plurality of first threaded holes matched with the outer raceway penetrate through the outer periphery portion of the inner raceway, various first threaded holes are uniformly distributed along a circumferential direction of the inner raceway, the axial line of the first threaded hole is parallel to the axial line of the inner raceway, threads inside the first threaded hole are provided with an ejection bolt, and the axial length of the ejection bolt is more than the axial thickness of the inner raceway. The raceway apparatus has characteristics of simple maintenance and replacement, and low replacement cost. The present invention further discloses a mixing cylinder assembly applying the raceway apparatus, and a concrete mixing and transporting truck applying the raceway apparatus.

A washing machine top panel fastening device, said device comprising a first fastening element installed at the top of a washing machine housing (1) and a second fastening element installed on a washing machine top panel (2), the first fastening element and second fastening element fitting together.

The present invention relates to the technical field of mechanical processing tools, and discloses a reamer with a quickly replaceable cutter head, comprising a reamer rod and a reamer head, and also comprising a positioning assembly arranged inside the reamer rod, and a locking mechanism arranged on the positioning assembly to fix and lock the reamer head; a mounting handle is arranged on the top of the reamer head, and a plurality of positioning grooves and locking grooves are symmetrically provided on the mounting handle. The reamer with a quickly replaceable cutter head can, through this arrangement, automatically lock and assemble the reamer head, greatly improving the flexibility and convenience of operation, and can ensure the tightness and stability of the connection between the reamer rod and the reamer head, effectively preventing the cutter head from loosening or falling off due to vibration or impact during the operation of the reamer head, thereby ensuring the processing accuracy and operation safety, and improving the overall work quality and reliability. In addition, the present application can disassemble and replace the reamer head separately, and only replace the worn parts, greatly reducing the maintenance cost.

The invention relates to the technical field of sewage treatment, in particular to a low-energy-consumption integrated sewage treatment system suitable for rural areas, comprising a sewage purification area which is divided into an adsorption buffer area, a primary settling area, an organic pollutant conversion area, a secondary settling area and a disinfection area in sequence by a plurality of partition plates, a water inlet is formed in one side of the adsorption buffer area, and a water outlet is formed in the lower end of one side of the disinfection area; the top of the sewage purification area is connected with a gas emission reduction area through a net plate frame, the two ends of a net frame plate are detachably connected with the sewage purification area through a dismounting mechanism, a plurality of filler frames used for containing filler are arranged in the organic pollutant conversion area, and through holes are formed in the frame walls of the filler frames; positioning grooves are formed in the two side walls of each filler frame respectively, vertical sliding grooves are formed in the two side walls of the organic pollutant conversion area respectively, long-strip-shaped sliding blocks are arranged in the sliding grooves in a sliding mode, positioning blocks are arranged on one sides of the sliding blocks, and the sewage treatment device is good in sewage treatment effect and high in efficiency.

The present invention discloses a raceway apparatus, wherein the rear portion of an inner raceway and an outer raceway matched with a supporting roller form a snapping connection, the outer raceway is provided with a side plate sleeved on the outer portion of the outer periphery surface of the inner raceway, and is provided with bottom plates arranged on the outer portion of the rear end surface of the inner raceway in a parallel manner, a plurality of first threaded holes matched with the outer raceway penetrate through the outer periphery portion of the inner raceway, various first threaded holes are uniformly distributed along a circumferential direction of the inner raceway, the axial line of the first threaded hole is parallel to the axial line of the inner raceway, threads inside the first threaded hole are provided with an ejection bolt, and the axial length of the ejection bolt is more than the axial thickness of the inner raceway. The raceway apparatus has characteristics of simple maintenance and replacement, and low replacement cost. The present invention further discloses a mixing cylinder assembly applying the raceway apparatus, and a concrete mixing and transporting truck applying the raceway apparatus.

This invention discloses an injection mold for manufacturing the stator of a plum blossom liquid pump, comprising a lower mold and an upper mold. The upper mold is connected to the lower mold via a locking mechanism. The upper mold has a plum blossom groove, a third injection unit, and a core. The core extends through the upper mold along the plum blossom groove and includes a first injection unit and a second injection unit. The first injection unit is connected to the upper mold via a first fixing mechanism, and adjacent first injection units are connected via a second fixing mechanism. The second injection unit wraps around the outside of the first injection unit and is detachably connected to the first injection unit via a first locking block. This invention not only enables secondary injection molding of the engineering plastic layer but also controls the deformation of the engineering plastic layer, improves the adhesion strength and stability between the engineering plastic layer and the metal body, and reduces friction and wear during the operation of the plum blossom liquid pump.

The invention discloses a heat dissipation device for directly pressing power components by utilizing a shell. The heat dissipation device comprises a shell and a plurality of power components; the shell comprises an upper shell and a lower shell; the upper shell and the lower shell are fixedly assembled together; a plurality of bumps are arranged on the inner wall of the upper shell or the lower shell; the power components are installed in the shell; one surfaces of the power components resist the bumps on the upper shell or the lower shell; the other surfaces of the power components directly resist the inner wall of the upper shell or the lower shell; or, a step is arranged on the upper shell or the lower shell; and a plurality of bumps are arranged on the step.