165 results about "Structural shapes" patented technology

The invention discloses a spatial reticulated shell structure shape optimization method based on a genetic algorithm, and relates to the technical field of data processing, and the method comprises the steps: generating a structural force path topological knowledge graph based on node stress feature data, so as to extract feature vectors representing the integrity and coherence of a main bearing path of a structure; determining a key node disturbance sequence by taking the feature vector as input and the integrity and coherence of a main bearing path of the structure as a reward function, carrying out genetic algorithm coding on node coordinates, and obtaining an optimized position of a structure node through population iteration and fitness evaluation; a non-functional force path loss area in the structure is identified, the digital twin model is fed back and updated until the integrity and coherence of the main bearing path of the structure meet an optimization threshold value, and an optimized reticulated shell structure geometric shape is output; according to the method, accurate identification and disturbance optimization of the key nodes of the spatial reticulated shell structure are realized, so that the integrity and coherence of the main bearing path of the structure are remarkably improved.

The invention relates to a cable forming board (1) for the production of a cable harness (6) formed from individual wires (61) and / or wiring sets (62), wherein the cable formboard (1) is formed from a plurality of cable formboard segments (2) that can be arranged and / or fixed together, wherein a plurality of support elements (3) arranged movably and / or positionably on the cable form board segments (2) are provided for the production of a predetermined laying structure shape and / or conductor trajectory of the cable harness, wherein one or more of the support elements (3) have at least one protruding retaining element (31), furthermore, a drive system (4) is provided for moving and / or positioning the plurality of support elements (3) according to the predetermined laying structure shape and / or line trajectory, wherein the drive system (4) comprises a control unit (41) for controlling and / or regulating the movement and / or positioning of the plurality of support elements (3). Furthermore, the invention relates to a method for manufacturing a cable harness (6) formed from individual wires (61) and / or wiring sets (62).

The invention provides a device and method for integrally assembling complex structure external parts, the device comprises an axial positioning assembly, and a first positioning block, a second positioning block, a third positioning block and a fixing ring which are arranged on the axial positioning assembly, the fixing ring is used for being connected with a to-be-machined part, and the first positioning block, the second positioning block, the third positioning block and the fixing ring are arranged on the axial positioning assembly. The first positioning block, the second positioning block and the third positioning block are all used for positioning an external part, limiting plates or protruding blocks are arranged on the first positioning block, the second positioning block and the third positioning block, and selection of the limiting plates or the protruding blocks is based on the structural shape of a preset abutting area of the external part; according to the method, on the basis of the horizontal projection positions of the external part on the shell to be machined, the median of all the projection positions is selected as the distinguishing line, the corresponding first positioning block or fourth positioning block is matched for the external part on the basis of the distinguishing line for auxiliary positioning, and by selecting the positioning blocks of different structures, structural interference can be reduced; and meanwhile, more welding operation space for the surface of the shell to be machined can be provided.

The utility model belongs to the technical field of machining clamps, and particularly relates to a machining clamp which comprises a base table. The mounting disc is movably arranged at one end part of the base table; the self-locking adjusting component is arranged between the base table and the mounting disc and used for adjusting and moving the position of the mounting disc and achieving self-locking stability; the chuck mounting component is arranged on the mounting disc; the clamping head is arranged on the clamping head mounting component, and is used for solving the problems that an existing common machining clamp is relatively single in clamping structure shape and cannot adapt to clamping structures in different shapes, so that when the structures in different shapes are clamped, different clamps need to be replaced for clamping, and the use is very inconvenient.

The application discloses a steel structure roof sliding X-shaped jig frame and a jacking method thereof, which is in a whole butterfly shape, comprises two triangular sections arranged symmetrically and connected with each other, the structure shapes of the two triangular sections are completely same, and the two triangular sections are fixedly connected through connecting fixed points; and the jig frame is spliced by frame-shaped unit frames. The steel structure roof sliding X-shaped jig frame has a reasonable overall structure design, compared with a traditional flat plate structure, a notch is formed on the two sides of the moving direction, the hoisting of roof truss members on the jig frame can be greatly facilitated, and a clamping rod is avoided, which is a general type design and can adapt to the needs of different sliding directions, reduces the requirement for hoisting equipment under the prior art condition, reduces the cost, improves the work efficiency, meanwhile, the stability of the overall structure is good, the load bearing requirement for heavy roof trusses can be met, the contour is spliced by straight lines, the requirement for the splicing process is low, and the steel structure roof sliding X-shaped jig frame has a very good application prospect.

This invention relates to a four-medium combined rotary joint for a rotating drum, comprising a rotating drum part, a rotating shaft seat, and a fixed part. The rotating drum part includes a rotating drum connecting plate and a rotating drum connecting seat, with the left side of the connecting seat connected to the right side of the connecting plate. A bearing seat is sleeved on the outside of the right side of the connecting seat. The fixed part includes a water connector structure, a steam connector structure, an electrical connector structure, and an air connector structure. The water connector structure includes a shaft tube and a water screw connector, with the shaft tube passing through the connecting seat and the connecting plate from the right side and flush with the left side of the connecting plate. This four-medium combined rotary joint for a rotating drum, by creating perforations in the rotating drum part and designing the structure, shape, and position of the pipes in the fixed part, allows all four media to be delivered to the rotating drum, each successfully transmitted independently without interference or influence.

This invention discloses a lightweight design method for phased array antennas. The phased array antenna adopts a lightweight design approach, using a composite structure of a carbon fiber mounting frame and an aluminum honeycomb sandwich support plate for the load-bearing structure. This reduces the overall weight of the device while meeting load-bearing requirements. By rationally utilizing the structural shapes of the components, the discrete structural design is transformed into an integrated functional structure design. The component structure is designed as a long strip shape, and the front and back components of the load-bearing structure are arranged in a cross shape. This method improves the overall stiffness of the phased array antenna without increasing weight. The fundamental frequency of the phased array antenna is greater than 100Hz, effectively avoiding coupled vibration between the phased array antenna and the platform. The structural stiffness meets the requirements for mechanical environmental resistance design.

The invention relates to a disc-shaped suspension type reverse umbrella disc insulator and a manufacturing method. According to the novel technical scheme, the technical standard (figure 7) of the overall structure height H value is not changed, the limitation of the structural shape space of an existing disc-shaped suspension insulator (figure 2) is broken through, all umbrella discs of the umbrella disc face (1), the middle umbrella disc (2) and the lower umbrella disc (3) are changed into reverse umbrella discs, the height (figure 3) of the umbrella disc + column head (5) is 36%-40% lower than that of an existing umbrella disc + column head (figure 4), and the column head (5) of the umbrella disc is installed in a steel cap (10) to be connected. The steel foot (7) with the zinc sleeve (8) is inserted into the steel foot hole (6) of the umbrella disc face (1) to be connected, the connection relation is formed through solidification of the cement adhesive (4), the connection portion (12) of the steel cap (10), the steel foot (7) and the locking pin (9) is exposed, a novel specific structural shape (figure 1) is created, the technical effect of no shielding obstacles (figure 8) is achieved, technical defects are eliminated, the practical requirement is met, and the space margin of technical performance improvement is expanded.

Provided is a shape memory alloy (SMA) protective component for protecting structural or functional components in a robot apparatus and / or support structures the robot apparatus is mounted to. The protective component is generally disposed within a limb segment of a robot apparatus, between two joints / servos. According to some embodiments, the protective component is itself a limb segment, and two or more protective components can be connected at joints, like building blocks, to form the robot apparatus. The protective component includes one or more "smart" shape memory alloy structures that are deformable to shield / absorb external impacts and dissipate mechanical energy. The material of the shape memory alloy is conductive, flexible, and malleable such that it can be interwoven into a structural shape or pattern. After deforming from an impact, passing electricity through the shape memory alloy structure causes the structure to inflate / reform its original shape.

The invention discloses an oil-immersed transformer winding structure and a winding device, relates to the technical field of oil-immersed transformers, and aims to solve the technical problem that the functionality of a coil assembly of a traditional oil-immersed transformer winding structure is limited. And an upper clamping piece is arranged above the lower clamping piece through an iron core. According to the oil-immersed transformer winding, the insulating layer on the outer side of the coil assembly is subjected to wrinkle treatment, so that the oil-immersed transformer winding effectively adapts to the tension and the drawing force of the bending radian in the winding process when being wound on the iron core to be bent; in this way, the shape of the single coil assembly can be conveniently adjusted so as to adapt to coil assemblies of different structures and shapes. According to the mode, the coil assembly is preprocessed under the adaptation of a certain size specification, then adjustment is carried out according to the coil assembly of the actual specification of the needed oil-immersed transformer winding structure, meanwhile, wrinkle treatment is carried out in cooperation with an insulating layer on the outer side of the coil assembly in the adjustment process, and the situation that the insulating layer is damaged is reduced.

The utility model relates to the technical field of shield tunnels, in particular to an equipment box support suitable for a shield segment pre-buried positioning hole, which comprises two Z-shaped steel stand columns, the Z-shaped steel stand columns are matched with the shield segment in structural shape, long round holes are formed in the two Z-shaped steel stand columns, and the long round holes are communicated with the Z-shaped steel stand columns. The Z-shaped steel stand columns are fixed to reserved holes of the shield segment through chemical anchor bolts penetrating through the long round holes, the two U-steel cross beams are arranged between the two Z-shaped steel stand columns and connected with the two Z-shaped steel stand columns through fastening bolts, and the angle steel vertical beam is arranged between the two U-steel cross beams and connected with the two U-steel cross beams through fastening bolts. The device box support has the advantages that the stress form is simple, clear and reliable, the device box support is used in cooperation with a duct piece reserved positioning hole and adapts to shield tunnel construction errors, a device box of a conventional size can be installed at any position within a certain duct piece range, and the device box support is provided with teeth and tooth-shaped gaskets so that slippage can be effectively resisted.

The application discloses a composite landing gear for a vertical take-off and landing aircraft and a forming method thereof; the method comprises the following steps: S1, according to the structural shape of the landing gear, a hollow-structure metal frame 1 is made through 3D printing profiling; the surface of the metal frame is cleaned and is ready for use; S2, the two end openings of the metal frame are sealed, and a composite material prepreg is laid on the surface of the metal frame; meanwhile, cold extraction pre-compaction and hot pre-compaction are carried out during the laying process of the composite material prepreg; S3, after the laying of the composite material prepreg is completed, vacuum extraction is carried out for compaction, and then the metal frame is put into a hot pressing tank for solidification; S4, after the solidification, the material used for compaction is removed, the sealing material at the two ends of the metal frame is removed, and a plurality of connecting holes used for being connected with the aircraft body are processed at one end, so that the composite material landing gear is obtained. The forming method provided by the application adopts integral forming of the internal metal frame and the composite material part with an external special-shaped structure, so that the risk of assembly is reduced, and the assembly difficulty is reduced.

The utility model relates to the technical field of grinding machines, and discloses a grinding machine with an anti-deviation structure, which comprises a base and a moving table slidably connected to the upper surface of the base, the lower surface of the moving table is fixedly connected with a moving block, and the upper surface of the base is provided with a moving groove matched with the moving block. The inner wall of the moving groove is rotationally connected with a first lead screw, and the first lead screw is in threaded connection with the moving block. According to the grinding machine with the anti-deviation structure, inserting grooves, inserting blocks, clamping block plates, threaded rods and clamping plates are used in cooperation, a worker can select the mounting positions of the multiple sets of inserting blocks according to the structural shape of a special-shaped part, then the threaded rods are rotated through rotating rods, and the multiple sets of clamping plates clamp all parts of the special-shaped part correspondingly; therefore, the device can stably fix the special-shaped part with a complex structure, the deviation condition of the special-shaped part in the grinding process is reduced, and the stability of the grinding machine in the grinding process is improved.

This invention provides a sealing structure and assembly method, belonging to the field of mechanical seal technology. It includes: a container body; a cap fixed to the end of the container body, with a predetermined interval between the container body and the cap; a sealing ring fixedly connected to the cap; and a sealing retaining ring fixedly connected to the container body. The end of the sealing retaining ring contacts the end of the sealing ring, and the sealing ring is fixed inside the predetermined interval via the sealing retaining ring. By adopting the technical solution of this invention, the manufacturing difficulty of the cap is reduced, the structural shape of the sidewall connection part of the cap is simplified, assembly is easy, the performance of rotating containers is improved, and good assembly processability, sealing performance, structural stability, and reliability can be achieved simultaneously.

This utility model relates to a quick-assembly and disassembly device, specifically a safety protection device that allows for quick assembly and disassembly. It includes a protective cover with mounting plates symmetrically arranged at both ends. A wire-binding component is fixedly mounted on the side wall of each mounting plate. The wire-binding component includes a first wire clamp and a second wire clamp with identical structural shapes. The two wire-binding components are detachably mounted at both ends of the protective cover. A gravity locking rod is fixedly mounted on the side wall of the first wire clamp, used to achieve gravity locking with both ends of the protective cover. Both the first and second wire clamps have wire outlets through which the wire bundle passes. The arrangement of a movable rod and magnets allows the wire outlets to open and close flexibly. When the movable rod rotates and the first and second magnets attract each other, the wire outlets close, preventing the wire bundle from coming out and protecting it from external interference. When it is necessary to organize the wire bundle, pulling the movable rod separates the magnets, opening the wire outlets for easy wire organization and threading.

The utility model discloses an adjustable wood-plastic floor extrusion die which comprises a die head fixedly mounted at the front end of an extruder, a transition plate, a support plate, a confluence plate, a mouth die, a stock die and a plurality of die cores horizontally arranged in the transition plate, the support plate, the confluence plate, the mouth die and the stock die, wherein the transition plate, the support plate, the confluence plate, the mouth die and the stock die are sequentially mounted at the front end of the die head; die cavities in the die head, the transition plate, the support plate and the confluence plate are communicated, and the die cavities are communicated with cavities in the mouth die and the stock die. By arranging the dismountable confluence plate, the mouth mold, the shaping mold and the mold cores, the number of the dismountable mold cores is correspondingly changed according to different widths of wood-plastic floors with the same structural shape and different sizes and models, and the distance between the shaping blocks in the shaping mold is adjusted to adapt to mounting clamping grooves in the wood-plastic floors with different widths; and wood-plastic floors with the same structural shape and different models and sizes can be produced and extruded only by replacing the mouth mold, so that the total number of molds required for producing the wood-plastic floors is greatly reduced, and the production cost is reduced from the source.

The utility model discloses a cable stranding filling rope hoisting device, and relates to the technical field of filling ropes. The lifting device comprises a support, lifting rings are fixedly installed at the four corners of the top of the support, a supporting mechanism is arranged at the bottom of the support, a power mechanism is arranged in the supporting mechanism, connecting assemblies are symmetrically arranged at the other end of the supporting mechanism, and the two connecting assemblies and the support are installed in a rotating mode. After the filling rope roller is placed in the supporting mechanism, the power mechanism is started, and the power mechanism can change the distance between the whole supporting mechanisms. Through the adjustment, filling ropes of different sizes can be adapted, when the distance between the whole supporting mechanisms is increased, the supporting mechanisms can be attached to the inner wall of the filling rope roller, the supporting mechanisms stably bear the inner wall of the filling rope roller through the structural shape of the supporting mechanisms, stable and reliable supporting of the filling rope roller is achieved, and the service life of the filling rope roller is prolonged. No matter how the size specification of the filling rope roller changes, the attaching tightness degree can be guaranteed.

The utility model provides a product airtightness testing device. The product airtightness testing device comprises a leak detector, a bottom plate, a sealing tool arranged on the bottom plate, a lateral positioning electric cylinder and a lower piezoelectric cylinder, wherein the lateral positioning electric cylinder and the lower piezoelectric cylinder are used for positioning the sealing tool; the sealing tool comprises a sealing base and a sealing cover plate matched with the sealing base. The lateral positioning electric cylinder is used for positioning the sealing base, and the lower piezoelectric cylinder is used for driving the sealing cover plate to be in press fit with the sealing base; the sealing base and the sealing cover plate are matched to form a sealing cavity for accommodating a product to be detected; the leak detector is communicated with the sealing cavity and is used for detecting the sealing performance of the to-be-detected product in the sealing cavity. According to the utility model, the air tightness test of products with various structures and shapes can be realized.

A refrigerator is disclosed. The refrigerator includes one of the first panels forming left and right side surfaces of the refrigerator and the other of the first panels. The first panel may be configured from a vacuum heat insulator that forms a vacuum space. A partition wall is formed extending in a horizontal direction between one of the first panels and the other of the first panels to partition the first storage compartment and the second storage compartment. A hinge is provided on one surface of the partition wall. The reinforcing plate extends in the longitudinal direction on one surface of the partition wall, and both ends of the reinforcing plate are connected to the second plate of the first panel. According to this, the reinforcing plate is made of a metal material, and the flatness of the body in the height direction and the structural shape of the refrigerator can be maintained in the vacuum exhaust step.

The embodiment of the invention provides a shore bridge stand column wind breaking armor system and method and a shore bridge, and relates to shore bridge stand column wind breaking armor design. The invention aims to solve the problem that the structural weight and the manufacturing cost need to be obviously increased for resisting wind load because the wind power coefficient of a conventional quay crane rectangular section upright column is too high. The system comprises a wind breaking armor unit, the cross section of the wind breaking armor unit is triangular, the two opposite ends of the wind breaking armor unit extend outwards to form a first mounting edge and a second mounting edge respectively, and the first mounting edge and the second mounting edge are detachably mounted on the rectangular outer surface of a stand column through connecting pieces respectively; and a flow guide surface is formed between the first mounting edge and the second mounting edge. The quay crane is provided with the system. The method is implemented by adopting the system. The wind breaking armor unit can cover the surface of the stand column, the structural shape of the stand column can be changed, the cross section of the wind breaking armor unit is triangular, a flow guide face is formed between the first installation edge and the second installation edge, and the effect of reducing the wind power coefficient can be achieved.

The utility model discloses a TSSOP20 lead frame and a stamping assembly, the TSSOP20 lead frame comprises a rectangular frame and a subunit, the subunit comprises a base island and a pin, the base island sinks in the rectangular frame, the base island is in a quasi-rectangular shape, the corner of the base island has radian, two ends of the base island are provided with first connecting ribs, the other end of each first connecting rib is connected with the rectangular frame, and the pin is connected with the rectangular frame. The pins are arranged on the side edges of the base island, an included angle is formed between the pins and the base island, second connecting ribs are arranged on the pins, and the other ends of the second connecting ribs are connected with the rectangular frame. The stamping assembly comprises an upper die and a lower die, and the upper die and the lower die are matched for stamping to form the TSSOP20 lead frame. The beneficial effects of the utility model are that the corners of the base island are arranged to be arc-shaped, so that the base island can be effectively prevented from being broken; the L-shaped pins lock the four corners of the base island, so that the structural shape of the base island is more stable; and a positioning structure and an adjusting assembly are arranged on the stamping assembly, so that the machined lead frame can be ensured to have a relatively high yield.

Newness and distinctiveness are claimed in the overall structural shape, configuration, and three-dimensional ornamentation of the candle holder vessel as illustrated in the accompanying representation drawings. Protection is sought for the overall physical three-dimensional geometry and shape configuration of the item. No protection is claimed for the specific colorway variations, surface pattern decals, or interior candle elements shown.

The application relates to the technical field of welding tooling, in particular to a seat back steel wire welding tooling which comprises two mounting vertical plates, a cavity is formed between the two mounting vertical plates, a plurality of clamping rods are slidably connected to the mounting vertical plates and the clamping rods are axially consistent; a bearing plate is arranged through the mounting vertical plates and connected with the mounting vertical plates, a sliding gap is left between the clamping rods and the bearing plate, a clamping cavity is formed between the bearing plate and the plurality of clamping rods on the two mounting vertical plates; and a fixing unit is used for fixing the clamping rods. The application has the effects that the steel wire can be conveniently supported through the bearing plate, the clamping cavity with different structural shapes is formed after the clamping rods slide, the steel wire with different structural shapes can be adapted and fixed in position, the position of the clamping rods can be conveniently fixed through the fixing unit, and the possibility of clamping failure caused by the sliding of the clamping rods during the welding process is reduced after the steel wire is clamped by the clamping rods.

The utility model discloses a waste powder bin structure which comprises a waste powder bin base and a special-shaped sealing piece, the waste powder bin base and the special-shaped sealing piece are connected in a sealed mode to form a waste powder storage cavity, a powder inlet is formed in the side, close to a drum core, of the waste powder storage cavity, a cleaning scraper is connected to the side, close to the drum core, of the special-shaped sealing piece, and the cleaning scraper is used for being attached to the drum core. The special-shaped sealing piece is provided with an increment storage cavity extending in the direction away from the waste powder bin base, and the increment storage cavity communicates with the waste powder storage cavity. The waste powder bin base and the special-shaped sealing piece are connected in a sealed mode to form the waste powder storage cavity, and compared with a traditional waste powder bin outer cover structure, the special-shaped sealing piece can be provided with the increment storage cavity extending in the direction away from the waste powder bin base through the unique structural form of the special-shaped sealing piece on the premise that the overall adaptive size of the selenium drum is not changed. And the increment storage cavity is communicated with the waste powder storage cavity, so that the volume of the waste powder storage cavity can be flexibly increased.

The application provides a kind of aerodynamic / structure / sound blast three-discipline rapid optimization design method for supersonic civil aircraft, comprising: determining aerodynamic design variables, structural design variables; determining the same sound blast design variables as the aerodynamic design variables; establishing the correlation between the coordinates of the aerodynamic shape surface grid points and the structural design variables; establishing the aerodynamic / structure / sound blast multidisciplinary optimization mathematical model.1.Compared with the traditional single-discipline design, the application refines the comprehensive design of the three disciplines of aerodynamics / structure / sound blast, which helps to coordinate the overall performance of the conceptual scheme of the design.2.The application correlates the aerodynamic shape variables and the structural shape variables through the aircraft surface grid points, reducing the redundancy of the design variables, thereby helping to improve the optimization efficiency.3.The application uses a multidisciplinary rapid analysis method, which can comprehensively improve the performance of the three disciplines of aerodynamics / structure / sound blast within a few hours, achieving rapid design of the supersonic civil aircraft conceptual scheme.

The utility model provides a culture dish stacking and fixing device, which relates to the technical field of experimental instruments, and comprises a cylindrical main body, the cylindrical main body is provided with a top, a bottom, a placing cavity and a sliding door, the sliding door is movably installed, the sliding door is of an arc-shaped structure and rotates around the axis of the cylindrical main body when moving, the top is provided with a connecting structure, and the bottom is provided with a matching structure. According to the culture dish stacking and fixing device, culture dishes can be contained and stacked, stacking of the culture dishes of various specifications can be achieved, the adjacent devices are fixed through connecting structures and matching structures in the stacking process, the toppling and pollution problems can be effectively prevented, batch transfer of the culture dishes is facilitated, and in addition, the working efficiency is improved. Due to the structural shape of the device and the rotary opening mode of the sliding door, the needed space is small when the device is used, large-scale operation in a narrow space can be achieved, and use is more convenient.

The invention discloses a structural design method, device and system, relates to the technical field of structural design and is used for designing a characteristic reinforcing structure of a vehicle. The method comprises the steps of obtaining a finite element model of a vehicle and a vehicle body topology model of the vehicle, and based on a preset topology optimization target, performing topology optimization on the vehicle body topology model by using the finite element model so as to adjust density distribution of each section structure in the vehicle body topology model, and obtaining an initial characteristic reinforcing structure of the vehicle, and then, based on a preset shape optimization target, free shape optimization is carried out on the initial characteristic reinforcing structure so as to adjust the shape distribution of each section of reinforcing piece in the initial characteristic reinforcing structure, and a target characteristic reinforcing structure of the vehicle is obtained. According to the method, topological optimization, free shape optimization and preset optimization indexes can be combined to determine the characteristic reinforcing structure meeting the specific characteristic requirements of the vehicle, and the characteristic reinforcing structure has better material distribution and structural shape, so that the performance of the vehicle on specified characteristics can be improved.

This invention discloses an oil-immersed transformer winding structure and winding device, relating to the field of oil-immersed transformer technology. It aims to solve the technical problem of functional limitations of coil groups in traditional oil-immersed transformer winding structures, including a lower clamp; an upper clamp is provided above the lower clamp via an iron core. This invention, by wrinkling the outer insulation layer of the coil group, effectively adapts the tension and tensile force of the bending arc during the bending process of the oil-immersed transformer winding onto the iron core. This method facilitates shape adjustment of the single coil group to adapt to coil groups with different structural shapes. Essentially, this method involves pre-processing the coil group under certain size specifications, and then adjusting it according to the actual specifications of the required oil-immersed transformer winding structure. Simultaneously, the wrinkling of the outer insulation layer during adjustment reduces the possibility of insulation layer damage.

1. The name of the design product: the middle frame of the door lock front panel (S900). 2. The use of the design product: the design product is used for the middle frame of the door lock front panel. 3. The design points of the design product: the shape of the product, especially the shape of the profile structure. 4. The picture or photo that best indicates the design points: perspective view 1.