38results about How to "Easy to open and close the door" patented technology

The invention relates to the field of doors, and discloses a waterproof safety door. The waterproof safety door comprises a door frame and a door sash; an adjustable sealing mechanism is arranged between the door frame and the door sash; the adjustable sealing mechanism comprises a waterproof groove annularly formed in the door sash, a mounting groove formed in the door sash and corresponding to the waterproof groove, an adjusting ring arranged in the mounting groove and locally extending out to insert in the waterproof groove or totally shrinking into the mounting groove, and an elastic airbag arranged between the inner wall of the mounting groove and the adjusting ring; the extension and the shrinkage of the adjusting ring are controlled by a first driving mechanism; the inflation or thedeflation of the elastic airbag is controlled by a second driving mechanism; and after the door sash is closed, the first driving mechanism drives the adjusting ring to extend into the waterproof groove, and the second driving mechanism drives the elastic airbag to expand for interference fit with the waterproof groove. The waterproof safety door maintains an indoor ventilation state in daily life; and if water is accumulated, a sealing state can be maintained between the door sash and the door frame through the structure to prevent the accumulated water from entering indoors, so that the structure is skillful, the door opening and closing power is saved, and the waterproof effect is excellent.

The invention discloses a washing machine and an opening and closing method thereof. The washing machine comprises a box body, a door cover, a drive assembly and an inductor, wherein a washing cavity is arranged in the box body; the door cover is arranged on the box body to open and close the washing cavity; the drive assembly is connected with the door cover to drive the door cover to open and close the washing cavity; the inductor and the drive assembly are used for transmitting signals; and the drive assembly is used for receiving an induction signal of the inductor to open and close the door cover. According to the washing machine, an induction assembly is arranged, and a switching signal can be provided to the drive assembly through the induction assembly, so that the target of controlling the door cover to open and close is achieved and the washing machine is convenient to use.

The invention discloses a lightweight electric vehicle which comprises a vehicle body structure of the electric vehicle and a frame structure connected with the lower portion of the vehicle body structure. The vehicle body structure comprises a vehicle body and a vehicle door, wherein the vehicle body and the vehicle door are composed of a skeleton and thermoplastic boards, wherein the thermoplastic boards cover the inner surfaces and the outer surfaces of the skeletons. The skeleton is composed of a plurality of stamping rod parts which are welded to form a cage-shaped vehicle body skeleton in an integral mode. The surface of the cage-shaped vehicle body skeleton is provided with threaded fixing holes for fixing the thermoplastic boards which are fixedly connected with the cage-shaped vehicle body skeleton through screws and form a whole closed vehicle body. A body of the vehicle frame structure is composed of a crossbeam frame. A battery bin is arranged in the middle of the crossbeam frame. According to the lightweight electric vehicle, strength, rigidity and safety of the vehicle body and the vehicle door can be ensured, the weight of the vehicle body and the weight of the vehicle door can also be obviously relieved, strength and rigidity of a chassis can be effectively improved, when four wheels are stressed unevenly, the vehicle body will not deform, and batteries can be arranged in the most safe position.

The invention provides a reactive power compensation cabinet. A cabinet body and a top cover are movably assembled, assembly components can be assembled through larger workpieces at upper parts in the assembly technology, and the mounting efficiency is greatly improved; a special roller shutter door design is adopted, so that door opening and closing are facilitated during high-altitude work, the sealing performance of cabinet doors is improved due to a rubber coating design, and the service life of the cabinet is prolonged. The heat dissipation performance of structures designed in view of factors of outdoor fire prevention, mosquito and insect prevention and the like is poorer, so that the cabinet body, the cabinet doors and the top cover can be made of iron.

The invention belongs to the technical field of refrigeration equipment and discloses a door body with a display screen assembly externally arranged and a refrigerator. The door body with the display screen assembly externally arranged comprises the display screen assembly, a first attraction module and a wire box, wherein the first attraction module and the wire box are arranged inside the door body, a display screen is provided with a second attraction module, and the display screen assembly is connected to the wire box through a wire. According to the door body with the display screen assembly externally arranged, the display screen assembly is directly externally arranged and is connected to the wire box inside the door body through the wire for realizing communication; the first attraction module is arranged inside the door body, the second attraction module is arranged on the display screen assembly, and therefore the display screen assembly can be attracted on the outer side of the door body and can be conveniently taken down any time or attracted at different positions of the door body; and the display screen assembly is externally arranged integrally and can be purchased directly, and therefore worry about the influence of dust on the display screen is avoided, space for installing the display screen assembly does not need to be reserved in the door body, the difficulty of the foaming technology is lowered, and the thermal insulation performance of the door body is further improved.

The invention discloses a ball mill for refractory material production. The ball mill comprises a machine barrel and a driving mechanism, wherein the driving mechanism comprises a rack, a motor is fixedly connected to the top of the rack, and hollowed-out plates are fixedly connected to the left side and the right side of an inner cavity of the machine barrel. The invention relates to the technical field of ball mills. According to the ball mill for refractory material production, a draught fan is matched with a heater and an inflation pipe to blow hot air into the machine barrel, drying of materials in the machine barrel can be accelerated, meanwhile, crushed qualified raw material powder can be blown out, therefore the raw material powder cannot be accumulated in the machine barrel to generate buffering force on falling of steel balls and large materials, high efficiency of crushing can be maintained, an air outlet pipe can blow the blown powder into a powder separation mechanism forseparation, and when the interior of the powder separation mechanism is blocked, air flow can be transferred into an air return pipe and discharged back into the machine barrel again, so that the main body part of the ball mill can continuously work without shutdown and is not influenced by the cleaned powder separation mechanism, and the use is convenient.

The invention relates to an automatic automobile door system capable of preventing hurt caused by clipping; an automobile door (10) is articulated with one end of a door control oil cylinder (3), and the other end of the door control oil cylinder (3) is articulated with a door frame (11); an oil way of the door control oil cylinder (3) is connected with an automobile hydraulic system by a proportional electromagnetic valve (18); the control end of the proportional electromagnetic valve (18) is connected with an automobile central control system; the edge of the inner wall of the automobile door (10) is provided with an infrared transmitter (1); an infrared receiver (2) is arranged at the corresponding position on the door frame (11); and the infrared transmitter (1) and the infrared receiver (2) are respectively connected with the automobile central control system. The automatic automobile door system can effectively prevent the hands, the feet or the other parts of a person from being clipped when the automobile door is closed, thus avoiding the hurt to a human body; and furthermore, the automatic automobile door system has the functions of automatically opening and closing the door, so that the person can open and close the door without getting off, and the potential safety hazard is reduced.

The invention relates to a protection device, and specifically an auxiliary heat dissipation protection device for a computer case. The device comprises a movable machine body mechanism, a filter screen mechanism, a tensioning mechanism, a cooling mechanism, a clamping mechanism and an automatic power-off mechanism. The device is capable of switching moving modes. The device can be used for filtering dust and easily cleaning the dust. The device can clamp the case. The device can damp the case. The device can switch a damping mode. The device can assist in cooling the case. The device is capable of tensioning a belt. The device is capable of performing power-off protection. A door can be opened and closed easily. Filter screen mechanisms are positioned on the left and right sides of the movable machine body mechanism. A tensioning mechanism is arranged inside the movable machine body mechanism, the cooling mechanism is connected with the movable machine body mechanism, the tensioning mechanism is in flexible connection with the cooling mechanism, the clamping mechanism is arranged inside the movable machine body mechanism, and the automatic power-off mechanism is connected with themovable machine body mechanism.

The invention discloses an environment-friendly fireproof door capable of controlling expansion of a sealing piece. The environment-friendly fireproof door comprises a door frame, a fire extinguishingunit and a sealing piece expansion unit; the left side of the rear side face of the door frame is rotationally connected with the left side of the rear side face of a door plate through hinges, the upper surface of the door frame is fixedly connected with the middle of the lower surface of a supporting plate, and an annular groove is formed in the middle of the inner side face of the door frame;the fire extinguishing unit comprises a water pipe, a water tank, a water pump, a main water pipe and six spray heads, the interior of the water tank is hollow, the lower surface of the water tank isfixedly connected with the right side of the upper surface of the supporting plate, the side face of the main water pipe is fixedly connected with the front side of the lower surface of the supportingplate, and the number of the spray heads is six. According to the environment-friendly fireproof door capable of controlling expansion of the sealing piece, the front side of the fireproof door can be automatically subjected to fire spraying and extinguishment when a fire occurs, fire at a door opening is prevented from grilling the door plate all the time, the sealing strip can be tightly attached to the door plate when the fire occurs, and smoke leakage is prevented.

The invention provides a watertight locking device and an installation method thereof. The watertight locking device comprises a connecting rod, a door-penetrating seal kit, a back-surface rotary handle, a front-surface rotary handle, locking pivot levers and door surface pressing block rotary shafts. The locking pivot levers are connected to the upper end and the lower end of the connecting rod;each locking pivot lever is formed by two sections of levers forming an obtuse angle; one door surface pressing block rotary shaft is arranged at an intersection point part of each two sections of levers; the back-surface rotary handle comprises a back-surface rotary handle free end which is handheld during door opening and closing, and a back-surface rotary handle fixed end located at the other end of the back-surface rotary handle; the back-surface rotary handle fixed end is connected with the door-penetrating seal kit; and the front-surface rotary handle comprises a front-surface rotary handle free end, a pivot and a front-surface rotary handle fixed end. According to the locking device, a self-lubricating bearing is adopted on a relative rotation part, so that on one hand, the frictional force is greatly reduced, on the other hand, no lubricating oil needs to be filled, and the maintenance cost is reduced.

The invention discloses an environment-friendly garbage can for solid-liquid garbage. The environment-friendly garbage can comprises a base. The top of the base is fixedly connected with two can bodies and a supporting rod. The opposite sides of the two can bodies are both fixedly connected with the supporting rod. The front surfaces of the can bodies are movably connected with box doors. The topsof the can bodies are fixedly connected with top covers. Throwing openings are formed in the front surfaces of the top covers. The top of the supporting rod is fixedly connected with a top plate. Through openings are formed in the tops of the can bodies. According to the environment-friendly garbage can for the solid-liquid garbage, through arrangement and cooperative use of the base, a water outlet pipe, the can bodies, the box doors, the top covers, the throwing openings, the top plate, the supporting rod, an ash pan, a storing groove, a water outlet, bearing plates, first springs, a partition plate, filtering nets, drainage openings, a water delivering pipe, a connecting plate, a connecting frame, second springs, activated carbon plates, a through opening, third springs, sliding blocks, sliding grooves, limiting plates, an inner can body and guiding plates, the problem that an existing environment-friendly garbage can does not have the function of separating the solid-liquid garbage is solved.

The invention discloses a plate heat exchanger which is provided with adjacent two positive flanged sides and adjacent two negative flanged sides. Further, a plate heat exchanger is disclosed, whereinthe heat exchanger core is composed of the above heat exchanger plate and has a first medium passage and a second medium passage; a first air inlet port and a first air outlet port are connected to both ends of the first medium passage and are respectively located on the negative flanged sides in different directions; a second air inlet port and a second air outlet port are connected to both endsof the second medium passage and are respectively located on the positive flanged sides in different directions so that piping (or installation) is convenient to meet the situation that the inlet andoutlet of cold and hot fluid are not in the same direction. A plate heat exchanger is also disclosed. The first air inlet port and the first air outlet port are located on the same flanged side of the adjacent two flanged sides; a first ash cleaning door is arranged on the other side of the adjacent two flanged sides; the second air inlet port and the second air outlet port are located on the same positive folded side of the adjacent two positive folded sides; the second ash cleaning door is arranged on the other positive folded side of the adjacent two positive folded sides. The plate heat exchanger can realize ash cleaning on both sides.

The invention discloses an intelligent electronic door lock, which consists of two parts, namely an external lock and an internal lock, and is characterized in that: an electronic key / intelligent card induction zone, a light-emitting diode (LED) lamp and a key zone are sequentially arranged on the external lock from top to bottom; the electronic key / intelligent card induction zone, the LED lamp, the key zone and an emergency external power supply jack are connected with a control device of the internal lock through data lines; the internal lock comprises an internal lock shell and a transmission device, a driving device and a control system which are arranged in the internal lock shell; the transmission device comprises a sliding groove, a limiting groove, a position induction block and abolt which are integrated, and a positioning hole, a shifting rod and an umbrella-shaped tooth which are integrated; the driving device comprises a motor fixed in the internal lock shell and a bevel gear arranged on an output shaft of the motor; and the control system comprises a printed circuit board (PCB), an inductor and set keys.

The invention discloses a buffer device for a sliding door of a shower room. The buffer device comprises a base, a buffer and a sliding device which is in rolling matching with the sliding door; the base is provided with an accommodating cavity with a lower opening and a mounting position for the buffer; the buffer is arranged at the mounting position; the sliding device is in sliding matching with the accommodating cavity; the sliding device is in linkage with the buffer; a driven piece and a driven overturning buckling piece are pivoted in a guide cavity; one end of the spring is arranged in a spring seat, and the other end of the spring is matched with a reset end; the drive end of a driving piece is matched with the lower opening of the guide cavity; the driving end of the driving piece is matched with the driven end of the driven overturning buckling piece; a positioning groove in the driving end is matched with a buckling piece; a stop positioning block is matched with the buckling piece to stop; the buckling piece is matched with a buckling position device; the buffer is connected with the sliding seat. The sling device moves along a straight line in the accommodating cavity of the base; the buffer moves along the straight line; the operation is smoother and stabler; the defect that the buffer swings in the prior art is overcome; the door is convenient to open and close, and long in service life.

The invention discloses a biochemical sewage purification device which comprises a box body. An air bellow is fixedly installed at one end of the box body, an iron gauze is fixedly installed on the side, away from the box body, of the air bellow, a frame is fixedly installed on the periphery of the iron gauze, a control valve cabinet is fixedly installed on the upper end face of the air bellow, acabinet door is fixedly installed on one side of the control valve cabinet, a handle is arranged on the cabinet door, a fixing frame is fixedly installed on the bottom face in the box body and provided with a fixing hole, an installation base is fixedly installed at the bottom in the air bellow, an oxygen pump is fixedly installed on the installation base, an installation frame is fixedly installed on one side of the installation base in the air box, the output end of the oxygen pump is sleeved with a ventilation pipe, the ventilation pipe penetrates into the control valve cabinet, in the control valve cabinet, a first control valve sleeves the ventilation pipe, and an aeration pipe is fixedly arranged in the fixing frame. The biochemical sewage purification device is simple and reasonablein structure, novel in design, easy to operate, high in applicability, high in practicability and convenient to widely popularize and use.

The invention discloses an ore funnel discharging door sealing structure. The sealing structure comprises a door hole formed in a carriage and a door leaf matched with the door hole; the door leaf enters through a door leaf convex part and leaves the door hole to be opened and closed, a sealing convex ring is arranged around the door hole, a door leaf sealing groove is formed in the periphery of the door leaf convex part, and a door leaf sealing glue cushion is arranged in the door leaf sealing groove; when the door leaf convex part enters the door hole, the sealing convex ring is located in the door leaf sealing groove, the sealing convex ring makes contact with the door leaf sealing glue cushion, powder ore can be effectively sealed, the defects of a traditional structure can also be overcome, after a powder ore transportation vehicle is provided with the sealing device and uses the sealing device, the powder ore leakage problem of a long-distance transportation vehicle system can be effectively solved, a discharging door is not prone to deformation in the using process, the sealing effect is improved, and meanwhile service life is prolonged.

The invention discloses clothes treatment equipment and a door component thereof. The door component comprises a first door, a second door and a separation and connection device and is characterized in that the first door and the second door can switch between a connection state and a separation state; the separation and connection device comprises a movable locking part, a slot and a locking driver for driving the locking part to move, the locking part is arranged on one of the first door and the second door, the slot arranged on the other one of the first door and the second door, the locking part and the slot are in insertion fit when the first door and the second door are in the connection state, and the locking part and the slot are in separation fit when the first door and the seconddoor are in the separation state. The door component has the advantages that the first door and the second door in the connection state can move jointly, the first door and the second door in the separation state can be used independently, vibration can be prevented from being transmitted to the first door, the locking driver drives the locking part to be coordinated with the slot to achieve thecoordination of the first door and the second door, and the drive process is convenient and reliable.

The invention discloses a sliding door of an anechoic chamber. The sliding door comprises a door frame (1) and a first door assembly (2) matching the door frame (1). The first door assembly (2) includes a first door leaf (21) equipped with a second door assembly (6) that can move up and down along the first door leaf (21), wherein the width of the second door assembly (6) is consistent with that of the first door assembly (2). According to the invention, the sliding door is provided with the first door assembly that can move back and forth and the second door assembly that is arranged at the first door assembly and can move up and down; and the second door assembly can shield the gap below the first door assembly.

The invention relates to the field of infant products, in particular to an infant fence door. The fence comprises a fence outer frame and a fence door body arranged on the fence outer frame, wherein the fence door body comprises a door bottom frame, a door top frame and a door fence; the two ends of the door top frame are fixedly provided with a lock pin base and a rotary shaft base respectively,and a door mounting base is arranged under the rotary shaft base; a rotating shaft is arranged at the bottom of the rotary shaft base, the fence door is assembled on the door mounting base of the fence outer frame through the rotating shaft, and then locking is achieved through the cooperation of an elastic lock pin and a clamping groove, the cooperation of a transverse elastic insertion shaft anda transverse shaft insertion groove and the cooperation of a longitudinal elastic insertion shaft and a longitudinal shaft insertion groove. The fence door can be opened and closed left and right, the door is very convenient to open and close, a child can be prevented from misoperating the fence door and opening the fence door, and therefore guarantee is provided for the personal safety of the child.

The invention relates to the field of filtrating and purification, in particular to a filtrating system which comprises a filtrating device and is characterized in that the filtrating device is arranged to be a filtrating tower, a first water inlet is formed in the top of the filtrating tower, a first water outlet is formed in the bottom of the filtrating tower, and a filtrating component is arranged in the filtrating tower; and the filtering component and the filtering tower are detachable, the filtering component is sequentially provided with activated carbon, quartz sand, an anthracite filtering material and a filtering cotton core from top to bottom, one side wall of the filtering tower is provided with an opening and closing door, the opening and closing door is hinged to the filtering tower, and the side, away from the filtering tower, of the opening and closing door is provided with a handle. The handle is welded to the opening and closing door, and a rubber sealing ring is arranged on the side, close to the filtering tower, of the opening and closing door.

The invention relates to the technical field of doorknobs, in particular to a doorknob with illumination, comprising a doorknob part and an LED (light-emitting diode) chip, wherein the doorknob part is provided with the LED chip, and the LED chip is detachably mounted on the upper surface of the doorknob. The doorknob can provide illumination for people at night, and facilitates door opening and closing.

The invention relates to the technical field of home hardware, and discloses a convenient anti-forgetting door handle. The convenient anti-forgetting door handle comprises a door, telescopic sleeves are fixedly connected to the two sides of the door correspondingly, a handle is fixedly connected to one side of each telescopic sleeve, an inner sleeve is movably connected to the interior of the door, springs located inside the telescopic sleeves are fixedly connected to the outer side of the inner sleeve, and the outer side of the inner sleeve is fixedly connected to a rotating plate located inside the door. The door is opened and closed through necessary push-and-pull actions during door opening and by matching a rotating plate on the outer side of the inner sleeve and meshing with a rotating gear, so that the door is more convenient to open and close, the size of the handles and the distance between the handles and one side of the door are reduced, the shapes of the handles are softer, people cannot be hung on the handles, potential safety hazards caused by the handles are avoided, and meanwhile, the movement of a piston pipe inside the inner sleeve enables the door to be effectively damped through an air bag strip when the door is closed, the door is more silent when being closed, and noise pollution of home furnishing is reduced.

The invention discloses an efficient aluminum alloy profile heat treatment device which comprises a transverse sliding rail, a longitudinal sliding rail and working boxes. The longitudinal sliding rail is arranged at one end of the transverse sliding rail, and the two working boxes are arranged on one side of the transverse sliding rail side by side. By rotating a crank, an adjusting rod rotates; threaded strips are arranged at the connecting positions of the adjusting rod and two nut seats, the two threaded strips are connected with the nut seats through threads, and the threaded connection directions are opposite, so that the two nut seats are far away from each other, then two second rotating plates rotate and are matched with two first rotating plates, the lifting work of a supporting plate is achieved, and a sealing plate is attached to a stop piece; an aluminum alloy profile is fed into a heating layer, a box door is closed, a closed space is formed, heat treatment work is conducted, the heat treatment efficiency is high, a rotating rod is rotated, the rotating rod rotates along a rotating shaft, the rotating rod is inserted into a clamping groove in a clamping block, a rotating disc is rotated, the position of the clamping block is fixed, disassembly is convenient, and discharging is easy and fast.

The invention discloses a key electric and manual quick-opening hybrid switch lock which comprises a front lock shell, a front lock clutch first handle is mounted on one side of the front lock shell, a lock body is arranged on one side of the front lock shell, a rear lock shell is arranged on one side of the lock body, a rear lock handle second handle is rotationally connected to one side of the rear lock shell, and the rear lock handle second handle is rotationally connected to one side of the rear lock shell. A hybrid switch lock assembly is arranged between the front lock shell and the rear lock shell. According to the technical scheme, key unlocking, electric unlocking and manual quick unlocking are combined into a whole, and all functions are achieved through one square tube. The device is simple in structure, the installation efficiency can be greatly improved, and function and performance faults caused by installation are reduced; a part for installing a lock cylinder on the lock body is omitted, the adaptation of the lock body is not influenced by the distance between the lock cylinder on the lock body and the square tube, and the lock can be matched with lock bodies of more specifications for use.

The invention discloses a clothes treatment device and a door body assembly thereof. The door body assembly comprises a first door body and a second door body, a locking piece and a convex part, wherein the locking piece is movably arranged on one of the first door body and the second door body; the convex part is arranged on the other one of the first door body and the second door body, and the convex part defines an insertion groove, wherein one of the first door body and the second door body is provided with a matching groove; and the first door body and the second door body are jointed under the condition that the convex part and the locking piece extend into the matching groove and the locking piece is inserted and matched with the insertion groove so as to realize linkage. Accordingto the door body assembly of the clothes treatment device provided by the embodiment of the invention, the matching groove and the convex part are arranged, so that the convex part extends into the matching groove, the thickness between the first door body and the second door body is reduced, and the attractiveness of the door body assembly is improved; and the first door body and the second doorbody can be linked through the inserting-connecting cooperation of the locking piece and the insertion groove, so that the door opening and closing operation is facilitated, and the use experience ofa user is improved.

The invention relates to an upturning carriage door structure belonging to a carriage door of a wagon or a container and provides an upturning door. The upturning carriage door structure comprises rails, a door body, a rolling wheel, a torsion spring system, a steel wire rope, a handle hanging strap, a cam lock, a lock catch, a hinge and a sealing element and is characterized in that the rails are grooved rails and are provided with corners by a bending way, the corner parts take the shape of a circular arc, and the rails are fixed at the inner sides of two sides of a door way; the door body is formed by the hinge joint of a plurality of rectangular door sheets provided with concave matchboards and convex matchboards, and the convex matchboards are arranged at the upper sides of the rectangular door sheets, and the concave matchboards are arranged at the lower sides of the rectangular door sheets; roller shafts are closely assembled on hinged arms of the hinges at two ends of each rectangular door sheet, and the rolling wheel protrudes from the end part of the rectangular door sheet and embedded in a rail groove; the torsion spring system is arranged at the upper side of the door way, a long shaft of the torsion spring system is arranged on support seats at two sides, one end of a torsion spring which is sleeved on the long shaft is fixed with the long shaft, the other end of the torsion spring is connected with a winding drum wounded by the steel wire rope, the lower end of the steel wire rope is connected with the bottom edge of the door body, the handle hanging strap and the cam lock are arranged at the lower part of the door body, and the lock catch is arranged at the lower edge of the door way. The invention is used for an upturning carriage door.

The invention discloses an emergency clutch device. The key point of the technical solution is that it includes a casing and a stepped shaft located in the casing. The stepped shaft includes a first stepped section and a second stepped section connected in sequence. The driving gear is equipped with a driven gear on the second step section, and a connecting hole extending in the axial direction is opened at the junction of the first step section and the second step section, and a connecting key is arranged radially in the connecting hole, and the driven gear There is a keyway on the end surface of the step shaft that cooperates with the connecting key, and a central hole is opened inward at the end of the stepped shaft close to the driven gear, and a pressing rod is slid in the central hole. One end of the pressing rod is in contact with the connecting key, and the other end penetrates the The housing extends to the outside, and a spring is connected between the other end of the connecting key opposite to the pressing rod and the end face of the connecting hole. The purpose of the present invention is to provide an emergency clutch device for a swing door machine. Push and pull the door body to realize the opening and closing of the door.

The invention provides a door handle with fluorescent film. The door handle is provided with the fluorescent film. In this way, fluorescence can be given off in the evening, so that the elderly can conveniently see the surrounding clearly when opening or closing a door, and the situation that it is inconvenient to open or close the door in the dark is avoided.