1243 results about "Convex structure" patented technology

The invention belongs to the technical field of ships, and particularly relates to a launching barge tower broadside berthing structure which comprises a launching barge body. The launching barge body comprises a main body buoyancy tank in the middle and launching barge towers arranged at four corners of the main body buoyancy tank; the launching barge body can be berthed in the dock platform; and the berthing assembly is arranged on the launching barge tower building, the berthing assembly is arranged on the side, close to the dock platform, of the launching barge tower building, and the berthing assembly can fill and level up a protruding main body structure of the launching barge tower building, so that the broadside structure is flat and can safely berth the dock platform. By arranging the berthing assembly, the bottom of the protruding main body structure is filled and leveled up, so that the broadside structure is flat and can safely berth the dock platform, the broadside structure form of a launching barge tower building is changed, the safety requirement of the berthing dock platform is met, the functions and purposes of the launching barge berthing dock platform are improved, and traditional unsafe operation is eradicated.

The invention provides a strain generation structure and a force sensor. The strain generating structure comprises: at least one strain body configured to strain under the action of an external force; wherein at least one concave-convex structure is formed on the surface of the at least one strain body, the concave-convex structure is provided with a concave part and a convex part adjacent to the concave part, the convex part of the at least one concave-convex structure is provided with at least one strain gauge, and the strain gauge is configured to sense the strain generated by the strain body; moreover, the strain generating structure is provided with a reference surface perpendicular to the axis of the strain generating structure, and each strain gauge of the strain generating structure is parallel to the reference surface. According to the strain generating structure, the strain gauges can be attached to a plane facilitating machine operation, and the detection performance of a six-dimensional force sensor is considered.

A titanium non-stick pan including a pan body. A base material of the pan body being a metal composite plate with a multi-layer composite structure that includes a base metal layer and a titanium metal layer arranged in a stack. The base metal layer is bonded to the titanium metal layer by metallurgical bonding. The titanium metal layer forms a concave-convex structure of a uniform thickness. The concave-convex structure includes a plurality of interconnected concave-convex unit cells, each of which includes first convex parts and a concave part enclosed by the first convex parts. The concave part includes a second convex part disposed in the concave part. The second convex part has a top lower than each first convex part, and a surface of the titanium metal layer at the concave-convex structure forms an oxidation layer with a thickness between 8 μm and 40 μm.

The utility model relates to an automobile head-up display anti-shake structure, which comprises a reflecting mirror and a reinforcing plate, the reflecting mirror is arc-shaped, the reflecting mirror is provided with a first surface and a second surface which are opposite to each other, and the second surface is positioned on one side, close to the arc center, of the reflecting mirror. The reinforcing plate is attached to the first surface and extends in the length direction of the first surface, and a protruding structure is arranged on the side, away from the first surface, of the reinforcing plate. According to the utility model, the reinforcing plate is tightly combined with the reflecting mirror, so that the overall strength and stability of the reflecting mirror are remarkably improved, and vibration and impact in the vehicle driving process can be effectively resisted.

The utility model relates to a hot-pressing shaping die for a molded pulp packaging product. The defects of unreasonable design and the like in the prior art are overcome. The hot-pressing shaping mold for the paper pulp molding packaging product comprises a hot-pressing shaping concave mold for at least forcing the outer diameter of the original side wing wall thickness of a paper pulp molding wet blank product to be kept unchanged, and a shaping internal expanding mold which is matched with the hot-pressing shaping concave mold and forms a hot-pressing shaping profiling cavity for accommodating the paper pulp molding wet blank product, the shaping internal expansion die applies radial internal expansion force from inside to outside to the original side wing wall thickness, and the radial internal expansion force enables the original side wing wall thickness to be compressed and thinned to the set side wing wall thickness; and when the original side wing wall thickness is forced to be compressed and thinned by the radial internal expansive force, at least part of the inner wall of the original side wing wall thickness is shaped in the direction opposite to the radial internal expansive force to form an inward protrusion. The method has the advantages that the inner convex structure is shaped in the hot-pressing shaping stage, the risk that the inner diameter of the inner convex structure is further enlarged during post-treatment processing demolding can be prevented, and a molded pulp packaging product has better fastening tightness.

To provide a sound insulation sheet member which is excellent in sound insulation performance in a low frequency band and which has a compact configuration. A sound insulation sheet member 1 including a substrate 2 and a concavo-convex structure 3 placed on at least one surface of the substrate 2, in which the concavo-convex structure 3 is provided by repeatedly arranging a plurality of units each defined as a concavo-convex unit shape 4 including a linear convex portion 5, in one direction at substantially constant intervals on the surface of the substrate 2.

The forming device comprises a lower forming die and an upper forming die, and the lower forming die and the upper forming die are used for forming the stamping part in a matched mode. In the width direction of the forming die, long-edge shearing dies are attached to the two sides of the forming die, and long-edge pressing insert cores are arranged on the outer sides of the long-edge shearing dies on the two sides; in the length direction of the forming die, wide-edge shearing dies are arranged on the two sides of the forming die in a lifting mode, and wide-edge pressing insert cores are arranged on the outer sides of the wide-edge shearing dies on the two sides; the lower forming die comprises an initial form and a female die form, the upper forming die comprises an initial form and a male die form, and the lower forming die and the upper forming die in the initial form are matched to form a concave-convex fluctuating structure of the stamping part in the width direction. The lower forming die in the female die form and the upper forming die in the male die form are matched to form a concave-convex fluctuating structure of the stamping part in the length direction. High-precision forming of the metal plate stamping part with the complex concave-convex structure can be achieved, and it is guaranteed that the multi-bend edge of the metal plate stamping part is smooth.

The invention provides a tool-free disassembly and assembly module, a module fixing assembly and a server chassis, the tool-free disassembly and assembly module comprises a bearing tray and a to-be-borne part, the bearing tray is provided with a bearing groove, and at least the groove bottom surface of the bearing groove is provided with a first guide sliding structure and a first convex structure; the to-be-borne part is provided with a second guide sliding structure and a first telescopic knob, and the second guide sliding structure is in sliding fit with the first guide sliding structure; a first limiting hole is formed in the surface of the end of the first protruding structure, at least part of the peripheral face of the first protruding structure is a first inclined face, and the axial end of a first telescopic rod of the first telescopic knob is provided with a second inclined face. The problem that in the prior art, some components such as a board card of a server usually need to be mounted and dismounted by means of external tools is solved.

The invention relates to the technical field of peek skull defect repair, in particular to a skull defect repair structure based on structural reconstruction of a peek skull repair material, which comprises a repair patch, a plurality of hourglass-shaped pore channels are formed in the surface of the repair patch, the diameter of the port of a horn-shaped concave groove is larger than that of the tail of the horn-shaped concave groove, the diameter of the port is 1.5 mm, the diameter of the tail of the horn-shaped concave groove is 0.05 mm, and the diameter of the hourglass-shaped pore channels is 1.5 mm. The hourglass-shaped hole channel is designed to be in an hourglass shape with two wide ends and a slender channel, the contact area between the two ends of the hole channel and healthy skull tissue is increased, growth, climbing and combination of granulation tissue are facilitated, meanwhile, attachment, adhesion and healing of soft tissue inside and outside a growth promoting layer repairing material are facilitated, the integration degree of the implant is further improved, and the survival rate of the implant is increased. And the outer surface of the PEEK is covered with the convex structures, so that the contact area between the PEEK material and tissues can be increased, the growth and combination of the tissues are facilitated, and individualized design conforming to aesthetic plastic surgery, thickening design for supplementing temporal muscle atrophy space and mutual embedding of the PEEK material and the skull are carried out.

The invention discloses a concrete strength detection device for building construction, and belongs to the technical field of building construction, through continuous downward movement of material pressing assemblies, the height of two material pressing assemblies can be adaptively adjusted according to the concave-convex structure of the top of a concrete test block; in the process, when one pressing head is pressed, the supporting rod or the hinge rod is extruded, the supporting rod or the hinge rod rotationally connected with the pressing head deflects and pushes the sliding block to slide in the sliding groove, and the sliding block pushes the adjacent hinge rod to deflect in the horizontal moving process. The other one or more pressure heads are synchronously pushed to adjust the height, so that the heights of the pressure heads can be adaptively adjusted according to the inclined, concave-convex or pitted surface shape on the concrete test block, the pressure heads are stably attached to the contact surface of the concrete test block, and the load is prevented from being transmitted only through local high points; the pressure head cannot generate local impact load at the moment of being in contact with the concrete test block, and the accuracy and the reliability of a detection result are improved.

The invention discloses a special cable for a complex environment and a preparation method of the special cable. The special cable comprises a cable core, a composite protection layer, an armor layer and an outer coating layer, the composite protective layer comprises an inner sheath layer, a middle reinforcing layer and an outer sheath layer; the armor layer is formed by wrapping a metal belt, the inner side of the armor layer is provided with a continuous bulge structure, and the continuous bulge structure is embedded with the spiral grooves in the surface of the outer sheath layer to form mechanical interlocking, so that displacement and looseness of the armor layer are effectively prevented; the reinforcing core body is embedded in the groove in the outer side of the metal belt, and the reinforcing core body and the metal belt are fixed through the spring piece, so that reinforcing buffering is formed, the anti-fatigue and anti-impact performance is remarkably improved, and the cable is suitable for complex working conditions of dynamic bending, torsion and frequent vibration, such as ocean cables, trailing cables and robot cables. The device has the advantages of being stable in structure, high in fatigue resistance and long in service life. The preparation method comprises the steps of spiral groove processing, metal belt pre-forming, reinforcing core inlaying, spring piece fixing, wrapping and armoring and the like, the process is reliable, and the method is suitable for large-scale production.

A pickleball racket is provided. The pickleball racket includes a racket handle and a racket body. An end of a racket handle connected to a racket body is provided with at least two first wavy concave-convex structures, which is more conducive to grip and provides good stability, while also provides a shock absorption effect and helps to reduce the impact on a wrist and an arm when swinging the pickleball racket. The racket body is provided with second wavy concave-convex structures corresponding to the first wavy concave-convex structures, which can make the connection between the racket handle and the racket body more stable, while also enhances the structural strength of the pickleball racket. The first wavy concave-convex structures of the racket handle are closely connected to the second wavy concave-convex structures of the racket body, which helps to improve the stability and control performance of the pickleball racket.

The utility model discloses a rod butt joint structure of an automatic clothes integration and dispersion system and a butt joint method. The rod butt joint structure comprises a first airing rod assembly and a second airing rod assembly. A first butt joint piece at the rear end of the first airing rod comprises a pivoted lever piece, two spaced guide walls and a first combination part at the bottom of a combination groove; the second butt joint piece comprises an insert and an abutting piece, the abutting piece is used for being matched with the lever piece, a second combination part and an elastic pin are arranged on the lower side of the insert, and the first combination part and the second combination part are of concave-convex structures matched with each other; when the two airing rod assemblies are separated, the lever piece obliquely extends downwards into the first rail to be blocked on the inner side of the first rail opening, and the elastic pin extends downwards to be blocked on the outer side of the second rail opening of the second rail. When the two airing rod assemblies are in butt joint, the insert enters the combination groove, the first combination part and the second combination part are combined, the abutting piece presses the lever piece downwards, the lever piece is far away from the first rail opening, the elastic pin is far away from the second rail opening, and the first rail and the second rail are in butt joint and are communicated with each other.

The utility model relates to the technical field of oil field underground oil extraction tools, and discloses a deep well fracturing packer rubber sleeve, which comprises an outer layer flexible sealing ring, an inner layer flexible sealing ring, an inner layer flexible sealing ring and an outer layer flexible sealing ring, and the outer layer flexible sealing ring is used for adapting to the surface of a well wall and realizing sealing; the middle composite buffer layer is used for buffering external pressure and absorbing stress generated by expansion; the inner-layer rigid supporting framework is used for providing structural support and limiting the expansion range of the rubber sleeve; the outer layer flexible sealing ring is of a gradient type flexible protruding structure. According to the utility model, the outer-layer flexible sealing ring adapts to an irregular well wall and realizes tight sealing through a gradient structure and micro lines, the middle composite buffer layer absorbs external pressure and disperses expansion stress, the anti-fatigue capability of the rubber sleeve is enhanced, and the inner-layer rigid supporting framework controls deformation through the supporting ribs and the compensation grooves; and the long-term stability of the rubber sleeve under high-pressure and high-temperature conditions is ensured.

The invention relates to the technical field of chips, in particular to a device cutting method, a packaging method and application thereof. The cutting method comprises the following steps: providing a wafer to be cut, arranging a wave-shaped cutting channel in a cutting area, and arranging a plurality of through holes in the cutting area according to the wave-shaped cutting channel; the line shape of the wave-shaped cutting channel is an arc line and / or a broken line; and cutting the wafer to be cut along the wave-shaped cutting channel, and cutting at least two adjacent chip areas into independent chip units. After the chip is cut by the cutting method, the cutting residual area at the edge of the chip is of a concave-convex structure, the convex part of the cutting residual area has a relatively large size, a plurality of through holes can be reasonably arranged, the cutting residual area at the edge of the chip is fully utilized, the utilization rate of the chip is improved, the integration density of the through holes of the chip is improved, and the chip yield is improved. The size of a subsequent packaging body is reduced, the packaging integration level is improved, and subsequent stacking, packaging and other operations are facilitated.

The invention provides an integrated turbine outer ring sector block structure combined by metal and ceramic components, and belongs to the technical field of aero-engines. The integrated turbine outer ring sector block structure comprises a metal supporting sector section fixedly connected with a turbine case shell; the outer side of the ceramic-based outer ring sector section is provided with a front mounting edge and a rear mounting edge, the ceramic-based outer ring sector block is arranged in an inner cavity of the metal supporting sector block in the radial direction, and the metal supporting sector block and the ceramic-based outer ring sector block are limited in the radial direction and the circumferential direction through a front pin shaft and a rear pin shaft which are arranged in the axial direction; the damping reeds are arranged in the inner cavities of the metal supporting sector blocks, convex structures are formed on the damping reeds, and the convex structures are in elastic pre-pressing fit with the cylindrical surfaces of the ceramic-based outer ring sector blocks; the front clamping ring is arranged in a plug pin hole of the metal supporting sector block; the elastic sealing ring is arranged between the metal supporting sector block and the front side of the ceramic-based outer ring sector block, and the ceramic-based outer ring sector block is pre-pressed on the rear end face of the metal supporting sector block; and the rear sealing piece is arranged on the rear pin shaft and is used for realizing axial limiting and gap sealing of the rear bolt.

The utility model discloses heat insulation type laminated iron, which comprises a metal substrate and a PET (polyethylene terephthalate) layer adhered on the surface of the metal substrate, the PET layer comprises a base layer and a conical array structure formed on the surface of the base layer, the conical array structure comprises a plurality of conical convex structures, and an Ag layer and an oxide protection layer are sequentially arranged on the side surface of each conical convex structure. According to the laminated iron, the reflectivity of the laminated iron in an infrared band can be improved, the heat insulation performance of a material is enhanced, meanwhile, the risk of migration of harmful substances is avoided, and the laminated iron has good safety.

The utility model discloses a correction component which comprises a first protruding structure arranged corresponding to the lip-cheek side or the tongue side of a first tooth jaw, and the first protruding structure is configured in the mode that when the first protruding structure abuts against a second tooth jaw of a pair jaw, a first jaw position is formed, the first jaw position deviates from an initial jaw position, and when the first jaw position deviates from the initial jaw position, the second jaw position deviates from the initial jaw position. The first occlusal force corresponding to the first jaw position is greater than the initial occlusal force corresponding to the initial jaw position. According to the utility model, the first jaw position can be reached through the mutual abutting of the first convex structure and the second tooth jaw, and the first jaw position has larger first occlusal force, so that larger orthodontic force can be provided for the first tooth jaw and the second tooth jaw.

The utility model discloses a mould frame with an outer pull rod, which belongs to the technical field of mould frames and comprises a mould frame base, the top end of the mould frame base is slidably connected with a bottom plate, the middle of the bottom end of the bottom plate is fixedly connected with a sliding seat, the vertical section of the sliding seat is of a convex structure, and the sliding seat is slidably connected into a sliding groove arranged at the top end of the mould frame base. The front end of the sliding seat is fixedly connected with an outer pull rod; according to the mold frame, when the mold frame is used and a mold on the bottom plate needs to be detached and replaced, the L-shaped clamping block can be pushed leftwards through the push column, and the guide block compresses the spring, so that one end of the inclined surface of the L-shaped clamping block is separated from the clamping groove in the left end of the pull block; the sliding seat connected with the outer pull rod can be pulled through the pull block to move outwards, so that the bottom plate moves outwards, and in the moving process, the two transmission columns move in the guide channel.

The invention relates to the technical field of mine supporting, in particular to a hydraulic supporting structure for an underground working face of a mine. The invention aims to solve the problem that the top of a mine is easy to delaminate, crush and even fall. According to the technical scheme, the device comprises a base, a vibration supporting mechanism and the like, the vibration supporting mechanism is installed above the base, and the vibration supporting mechanism is used for supporting a mine hole and making the top of the mine hole more stable. By arranging the hard sawtooth strip and the soft sawtooth strip, when the first abutting plate supports the top of a mine, the hard sawtooth strip can move, so that the soft sawtooth strip is extruded through sawteeth of the hard sawtooth strip, the soft sawtooth strip deforms many times and drives the first abutting plate to generate slight vibration, and chippings of the mine enter a small gap between the mine and the first abutting plate; a concave-convex structure at the top of the mine is filled, so that the compactness of the top of the mine is improved, the supporting effect of the first abutting plate on the top of the mine is enhanced, layer separation, breakage and even roof collapse of the top of the mine are prevented, and the bearing capacity of the top of the mine is improved.

Disclosed is a strain-generating structure and a force sensor. The strain-generating structure comprises at least one strain body configured to generate strain under an external force. A surface of the at least one strain body is provided with at least one concave-convex structure. The at least one concave-convex structure is provided with a concave portion and a convex portion adjacent to the concave portion. The convex portion of the at least one concave-convex structure is provided with at least one strain gauge. The at least one strain gauge is configured to sense the strain. The strain-generating structure has a datum plane perpendicular to an axis of the strain-generating structure. Each of the at least one strain gauge is disposed parallel to the datum plane. The strain-generating structure attaches the strain gauges to a plane that facilitates operation of the machine and considers the detection performance of a six-axis force / torque sensor.

The utility model belongs to the technical field of medical instruments, and particularly relates to an endoscope and an insertion part thereof. A working channel is arranged in the insertion part, a first suction hole is formed in the peripheral surface of the far end of the insertion part, and the first suction hole penetrates through the side wall of the insertion part and is communicated with the working channel; the peripheral face of the far end of the insertion part protrudes in the radial direction to form a protruding structure, the first suction hole is located in one side of the protruding structure, and the protruding structure exceeds the first suction hole in the radial direction. By means of the protruding structure, the gap can be formed between the first suction hole and the human tissue, the part, provided with the first suction hole, of the insertion part is prevented from being attached to the human tissue, the risk that the first suction hole is blocked by the human tissue is reduced, and the problem that blockage occurs when secretions are sucked out through the insertion part is solved.

The utility model discloses an integrated reed and a connecting terminal, which comprises a first sheet body, a connecting sheet and a second sheet body which are integrally formed, the first sheet body and the second sheet body have the same structure and are symmetrically connected to two sides of the connecting sheet, the connecting sheet is bent along the middle line and protrudes outwards, the first sheet body and the second sheet body are symmetrically arranged in parallel, and the first sheet body and the second sheet body are connected with the connecting sheet. A group of ribs extending in the same direction as the extension direction of the first sheet body and the second sheet body are uniformly distributed on the first sheet body and the second sheet body at intervals, each rib is bent in a wave shape, and a contact is formed at each bent part. According to the utility model, the integral structure is adopted, so that the integral stability of the reed is higher, the tail ends of the first sheet body and the second sheet body are effectively prevented from generating unrecoverable deformation and upwarp in the insertion process, meanwhile, the connecting sheet plays a role in limiting the insertion depth of the male terminal, and the connecting sheet is of a convex structure along the middle line, so that the insertion depth of the male terminal is limited. Impact in the plugging and unplugging process is effectively relieved, excessive deformation of the reeds is avoided, and stability and reliability of long-term use are guaranteed.

The utility model discloses a glass curtain wall lap joint structure convenient to install, and belongs to the technical field of glass curtain wall installation. A glass curtain wall lap joint structure convenient to install comprises a curtain wall body and a C-shaped installation plate, two symmetrically-arranged plug pins are fixedly connected to the back of the curtain wall body, the vertical section of each plug pin is of a convex structure, and the bottom ends of the plug pins are flush with the bottom end of the curtain wall body. And insertion channels matched with the bolts are formed in the inner bottom walls of the C-shaped mounting plates. Through the arrangement of the hasp locking structure and the synchronous abutting structure, when the curtain wall body is installed, the hasp locking structure can be fixed to the designated position through four bolts, the two plug pins on the back of the curtain wall body are inserted into the corresponding insertion channels respectively, and then the worm is rotated through the handle; when the threaded rod is in threaded connection with the threaded cylinder, the worm gear drives the threaded cylinder to rotate, and due to the fact that the threaded rod is in threaded connection with the threaded cylinder, the inverted-L-shaped lock catch plate moves downwards through the two movable rods till the inverted-L-shaped lock catch plate is locked on the L-shaped supporting plate in a hasp mode.

The stator core is formed by laminating a plurality of stator laminations, each stator lamination comprises a stator yoke and a plurality of stator teeth, each stator tooth is provided with a positioning groove, the area, extending from the positioning groove to an air gap, of each stator tooth is a tooth top, and the stator teeth are distributed at intervals in the circumferential direction of the stator yoke. A plurality of stator teeth of the plurality of stator laminations are correspondingly stacked to form a stator tooth part, stator yokes of the plurality of stator laminations are stacked to form a stator yoke part, the stator tooth part comprises a tooth top part, and the tooth top part comprises a first side wall and a second side wall which are located on the left side and the right side of the tooth top part respectively, and a third side wall which is located at the tooth top part and faces an air gap side; at least one of the first side wall, the second side wall and the third side wall located on the tooth top is provided with a plurality of grooves, and a protruding part is formed between every two adjacent grooves, so that a concave-convex structure is formed on the tooth top, and the heat dissipation capability of the stator can be greatly enhanced on the premise that the electromagnetic performance and the winding inserting difficulty are not affected.

The invention discloses a cylindrical battery with a pole piece with a concave-convex structure and a preparation method of the cylindrical battery, and belongs to the technical field of cylindrical batteries. According to the invention, the concave-convex pole piece is designed, so that the pore structure and porosity of the diaphragm cannot be changed due to internal stress in the charging process, and the performance of the battery cannot be degraded. Through reasonable calculation, the depths, the widths and the distances of the convex points and the concave pits meet a specific relational expression, and the length change caused by expansion is reasonably compensated by utilizing the thickness change caused by expansion of the pole piece to be matched with the depths and the widths of the convex points, so that the length margin of the diaphragm is proper, diaphragm wrinkles caused by relatively large diaphragm margin are avoided, and the service life of the diaphragm is prolonged. And the change of the pore structure and the porosity caused by small margin can be avoided.

The utility model discloses a rotary locking and connecting device and discloses a storage rack with the rotary locking and connecting device, and the rotary locking and connecting device comprises a rotating piece, a locking piece and a connecting piece, the first clamping piece is rotationally mounted at one end of the rotating piece, a first mounting part is arranged at the end of the first clamping piece, and the first mounting part is of a concave-convex structure; the second clamping piece is rotationally mounted at the other end of the rotating piece and provided with a second mounting part, the second mounting part is provided with a convex-concave structure, and the first mounting part and the second mounting part are correspondingly clamped; the first clamping piece and the second clamping piece can be oppositely inserted and locked through the first installation part and the second installation part. The assembly process can be simplified, the connection strength can be enhanced, the embedded design is adopted, and the embedded connection structure is hidden in an internal structure of a connected object, so that the attractiveness of a product is improved.

The present invention discloses a stator core structure of a tooth-yoke separation type motor and a design and manufacturing method thereof. The stator core structure comprises a yoke core and a tooth core. The inner wall of the yoke core is provided with a slot corresponding to the tooth. The tooth core is formed by stacking two different core laminations. The tooth top is fixed with a connecting piece to fix all the tooth cores together. The convex structure of the tooth root is precisely matched with the shape of the yoke slot. The design method of the present invention ensures mechanical strength and optimizes its torque performance by electromagnetic-stress coupling simulation and multi-objective optimization. The present invention improves the utilization rate of materials by a manufacturing method of tooth rotation dislocation, and avoids the slit affecting the tight connection at the slot. The tooth-yoke separation structure of the present invention has high stator mechanical strength, is easy to wind, and can realize flat wire coil assembly, which is beneficial to improving the slot fill rate, and can effectively weaken the leakage magnetic field and harmonics of the motor, reduce torque fluctuations, and improve the efficiency and performance of the motor.

The utility model provides soft busbar stamping equipment for a new energy automobile, which comprises a punch press and a stamping die, the stamping die is arranged on a workbench of the punch press through a lower die of the stamping die, and an ejection column of the stamping die is connected with an ejection device of the punch press. The stamping die is used for stamping a blank into a soft row semi-finished product with a convex hull structure at a time through a convex structure arranged in an upper die of the stamping die. According to the utility model, the semi-finished product of the soft row with the convex hull structure is punched on the blank in the punching equipment, so that the multi-layer semi-finished product of the soft row can be stacked in order, dislocation is avoided, the forming precision and yield of the semi-finished product of the soft row are improved, and meanwhile, the stacked copper foil can also be used as a whole to be convenient for turnover; the problems that a traditional lamination process is complex in procedure, low in manual operation efficiency and not beneficial to batch production of flexible connection are solved.

The utility model relates to the technical field of building ventilation equipment, and discloses a fresh air fan air port structure which comprises a shell frame, the upper end of the shell frame is connected with a connecting sleeve through a screw, a gasket is arranged at the contact end of the connecting sleeve and the shell frame, and bolts are distributed on the circumference of the lower wall in the shell frame. According to the utility model, the installation is simple and convenient, the arrangement of the connecting sleeve with a convex structure and the design of a protruding connecting port are adopted, so that the butt joint with a pipeline is convenient, and the installation efficiency is improved; the gasket is arranged between the connecting sleeve and the shell frame, so that the sealing performance is improved, and air leakage and vibration are reduced; the surface cover is magnetically adsorbed with the shell frame through a magnet, so that the surface cover is convenient to disassemble and clean; the size of a gap between the surface cover and the shell frame can be adjusted by adjusting the screwing-in depth of the bolt, the ventilation quantity can be controlled, and the good ventilation effect is achieved.