990 results about "Convex structure" patented technology

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.

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.

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 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 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 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 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 invention discloses small arch bridge construction equipment and a construction method.The construction equipment comprises a supporting platform and a plurality of sequentially-distributed frame bodies, the side ends of the adjacent frame bodies are rotationally connected, and therefore the multiple frame bodies form an upward-protruding structure; the two frame bodies at the edges are movably connected and are driven to be close to or far away from each other to adapt to the arch bridge height; the high frame body is driven to be close to or away from the supporting platform to adapt to the height of the arch bridge; the other frame bodies are driven by the frame driving piece to rotate, so that the included angle between the adjacent frame bodies is increased or decreased to adapt to different arch bridge shapes; the supporting device is compact in structure and small in occupied space, construction adjustment can be carried out while the prefabricated arch sections are sequentially connected conveniently, the supporting device is suitable for construction of small arch bridges of different shapes, bearing of the prefabricated arch sections is more uniform, the problems of excessive concentration of loads, uneven load distribution or transmission deviation are avoided, and the supporting stability and safety are improved.

The invention discloses a structural tower suitable for a large wind turbine generator, which comprises a steel tower drum, a switching node and a lattice tower, the lattice tower comprises a foot expanding section, a straight section and a variable angle section for connecting the foot expanding section and the straight section, the straight section is positioned above a blade tip, and the foot expanding section is positioned below the blade tip; a prestressed cable bundle channel is formed in the variable-angle section in the axial direction of the variable-angle section, a smooth inward-convex structure facing the steering side is formed in the position, where the prestressed cable bundle steers, of the prestressed cable bundle channel, and the cross section, at the smooth inward-convex structure, of the prestressed cable bundle channel is a bell-shaped hole with one large end and the other small end; the small end of the bell-shaped hole is an arc section with the diameter larger than that of the prestressed cable bundle, the small end of the bell-shaped hole faces the steering direction of the prestressed cable bundle, and the shape of the bell-shaped hole is gradually reduced from the two ends of the smooth inward-protruding structure to the center hole, so that the smooth inward-protruding structure is formed. According to the application, the prestressed cable bundle can be controlled and uniformly steered, and the prestress loss is reduced.

A flow path connection mechanism includes a first coupling member, a second coupling member, and a connection member. The connection member is mounted to the second coupling member. The first and second coupling members each include a concavo-convex structure having irregularities in an axis direction. The first coupling member is inserted into the connection member, and thus the respective concavo-convex structures of the first and second coupling members engage with each other in a circumferential direction.

The invention provides centrifugal casting equipment and process for a continuous fiber reinforced aluminum matrix composite pipe, and relates to the technical field of centrifugal casting, the centrifugal casting equipment comprises a centrifugal casting device, the centrifugal casting device comprises a base, two box walls are symmetrically welded to the top end of the base, and a cylindrical casting mold is rotationally arranged between the two box walls; the cylindrical casting mold is of a structure with a sealed tail end and an open head end, a circular blanking cap is fixed on the head end opening of the cylindrical casting mold in a sealing manner, and a pouring hole with a section of a convex structure is formed in the center of the circular blanking cap in a penetrating manner; two vertical rail shafts are symmetrically welded to the outer side of one box wall, a U-shaped sliding frame is slidably mounted on the two vertical rail shafts, and an L-shaped pouring pipe is slidably mounted in the middle of a longitudinal side rod of the U-shaped sliding frame in a penetrating mode. The sliding opening and closing operation of the circular blocking plate can be driven to be executed through the pulling and inserting operation of the L-shaped pouring pipe, so that the trouble that the two operations need to be executed step by step in sequence can be omitted, and the production and use efficiency of casting equipment can be improved.

The utility model relates to the technical field of non-woven fabric production, and discloses a non-woven fabric and an embossed pattern structure thereof, the embossed pattern structure comprises a plurality of distributed embossed groove lines, and each embossed groove line is formed by connecting two semicircular arc embossed grooves with opposite opening directions end to end to form an S-shaped or reverse S-shaped embossed groove structure. When the non-woven fabric is pulled, deformation resistance and elastic recovery effects are achieved, the risk of being pulled apart is reduced, and the risk that the non-woven fabric is damaged due to the fact that fingers exert force in the wiping process is reduced or avoided. By means of the embossed groove line, a round and edge-free protruding structure is formed in the two semicircular arc lines and matched with the embossed groove, dirt is stored, meanwhile, skin is not prone to being scratched, and the wiping effect and the using body feeling are improved. Gaps are formed between the embossed groove lines of each layer of the non-woven fabric, flow guiding, water absorbing and dirt holding are achieved, and the using effect is improved. The utility model has the characteristics of simple structure, strong practicability and good use effect.

The invention provides a blade top casing structure and a preparation method thereof, and the preparation method comprises the steps: building a first non-axisymmetric concave-convex end wall model and a second non-axisymmetric concave-convex end wall model according to a control function; establishing a model of a blade top and a model of a casing; coupling the first non-axisymmetric concave-convex end wall model and the model of the blade top to obtain a first model, and coupling the second non-axisymmetric concave-convex end wall model and the model of the casing to obtain a second model; and preparing the blade top and the casing according to the first model and the second model. According to the blade top casing structure and the preparation method thereof, the blade top and the casing can reduce the fluid pressure difference of the gap through the non-axisymmetric concave-convex structure, then secondary flow velocity distribution is affected, formation and development of channel vortexes are delayed, and therefore the strength of the channel vortexes is reduced, secondary flow losses are reduced, and the service life of the blade top casing structure is prolonged. And therefore, the efficiency of the turbine is effectively improved.

The utility model provides a nested type grinding roller structure which comprises an assembling layer, a connecting layer and a grinding layer which are sequentially arranged in an annular nested mode from inside to outside, and concave-convex structures in the horizontal direction and the vertical direction are arranged on the outer surfaces of the assembling layer and the connecting layer respectively. The minimum inner diameter of the inner surface of the grinding layer is larger than the maximum inner diameter of the outer surface of the assembly layer. Cheap carbon steel is used in the inner layer, high-chromium alloy with high cost is used in the outer layer, and the problems of high cost, waste of raw materials and the like in the abrasion replacement process due to the fact that the whole body is cast by using the high-chromium alloy are solved; after the fixing of the assembly layer and the grinding layer is removed, the assembly layer can be taken out from the axial direction and replaced with a new grinding layer, so that a new assembly layer does not need to be cast again, the processing time of a new product is saved, the replacement efficiency is improved, and meanwhile, the cost is reduced to a certain extent by repeatedly using the assembly layer.

Disclosed is an expansion valve coil assembly, comprising a coil unit and a housing, wherein the coil unit is provided with a mounting platform, the mounting platform is provided, in a partially protruding manner, with a connecting part, and the housing is sheathed over the connecting part and is fixedly connected to the mounting platform; and a side wall of the connecting part has a concave-convex structure, and the space between an inner side of the housing and the connecting part is filled with a sealing material.

The utility model discloses an anti-skidding well cementation rubber plug which comprises a rubber plug core shaft, a plurality of rubber discs are axially sleeved on the rubber plug core shaft, protruding structures are arranged on the outer side walls of the rubber discs, and the protruding structures are used for resisting pressure at two axial ends of the rubber discs. And a limiting piece is arranged at the end part of the rubber plug mandrel. The protruding structures are used for resisting pressure at the two axial ends of the rubber disc, can bear bidirectional pressure from cement paste and displacing liquid during well cementation operation, achieve good sealing of the rubber plug, prevent layer channeling and avoid the backflow phenomenon, can scrape residual cement paste on the wall of a casing pipe, ensure that no cement is left in the casing pipe, and improve the well cementation quality. When a cement plug is arranged in a pipe, the protruding structures can be embedded into cement, after the cement is solidified, the anti-skid well cementation rubber plug and the cement are solidified into a whole, and therefore the anti-skid well cementation rubber plug can be prevented from rotating along with a drill bit in the plug drilling process, and the anti-skid well cementation rubber plug can be easily drilled away.

The invention relates to a preparation method of an MEMS device and the MEMS device, and the MEMS device comprises a substrate which comprises a first surface and a second surface which are opposite to each other; a first diaphragm located on the first surface side and including a first movable region and a first fixed region; the first protruding structure is located on the side, away from the substrate, of the first vibrating diaphragm and connected to the first movable area, the area of the cross section of the first protruding structure is decreased in the first direction, the cross section is a plane parallel to the first surface, and the first direction is the direction from the second surface to the first surface; the material of the first bulge structure comprises SiN, and the content of Si in the first bulge structure is reduced and the content of N in the first bulge structure is increased in the first direction; the first supporting structure is located on the side, away from the substrate, of the first vibrating diaphragm and connected to the first fixing area; the back polar plate is positioned on one side, far away from the first vibrating diaphragm, of the first supporting structure; wherein in the first direction, the projection of the first convex structure falls into the projection range of the back polar plate; therefore, the reliability of the device is improved.

The utility model relates to the technical field of steam power generation turbines, in particular to a mixed flow type saturated steam power generation turbine which comprises a cylinder, the cylinder comprises a vertical inlet cavity and a horizontal outlet cavity which are communicated, and reinforcing ribs are arranged at the positions, corresponding to the joint of the two cavities, of the inner wall of the cylinder. A protruding structure at the bottom of the side, away from the horizontal outlet cavity, of the outer wall of the air cylinder is fixedly connected with a gearbox. The stationary blade assembly comprises a first-stage radial flow stationary blade fixedly arranged on the inner wall of the vertical inlet cavity and a second-stage axial flow stationary blade fixedly arranged on the reinforcing ribs; the rotor assembly comprises a rotating part connected with the high-speed shaft of the gear box, a first-stage radial flow vane impeller and a second-stage axial flow vane impeller, wherein the periphery of the rotating part is sleeved with the first-stage radial flow vane impeller and the second-stage axial flow vane impeller. The radial flow turbine and the axial flow turbine are combined to form the mixed-flow turbine, so that the working capacity of a single cylinder is improved, the power generation efficiency is improved, the cost is saved, and the unit size is reduced.