58results about How to "Easy to do it yourself" patented technology

The invention belongs to the technical field of medical instruments and particularly relates to a multifunctional handheld electric massager. In order to solve the problem that an existing massager with single functionality is inconvenient to operate, the multifunctional handheld electric massager provided herein comprises a handle; the bottom end of the handle is connected with an adjusting stud,the middle of the adjusting stud is sleeved with a top plate, a displacement positioning device is connected to the top of the top plate, the lower end of the adjusting stud is in threaded connectionwith an adjusting nut positioned below the top plate, two sides of the bottom of the top plate are provided with two slide grooves in symmetric distribution, sliders are slidably connected in the twoslide grooves respectively, a bearing support plate is connected to the bottoms of the sliders, and a positioning spindle that is vertically arranged is rotationally connected to the sliders and thebearing support plate. The multifunctional handheld electric massager has multiple functions, provides synchronization of massaging for surface skin and percussive stimulation for deep muscles, can provide multi-face multi-point simultaneous therapy, is convenient for a patient to operate, and can well meet the massaging needs of different parts of bodies different in form.

The invention discloses a water-based inorganic synthetic fluid coat. Calcite powder, heavy calcium carbonate powder, light calcium carbonate powder and sierozem powder are taken as the base material; and powdery mixture of water-soluble methylcellulose, ethyecellulose and hydroxypropyl methyl cellulose is taken as the filling material of the water-soluble glue of the solid powder. The water-based inorganic synthetic fluid coat is characterized in that the base mailer thereof further comprises anatase white powder, mica powder and wollastonite. The filling material of the water-based inorganic synthetic fluid coat further comprises hydroxypropyl methyl cellulose, polyacrylamide and water-based nanometer material. The invention has the benefit effects of changing the professional and single construction mode, being convenient for 'DIY' self-actuated operation of the user, adjusting the diversified structure of the product, improving the synthesis function of the product, and being good for 'environmental protection' and 'functionality'.

The invention discloses an atrial fibrillation detector comprising the following elements: an acquisition module used for collecting a pulse signal sequence and recording pulse time intervals; a grouping module used for ranking the recorded pulse time intervals from small to big, and dividing into groups of a preset number; a calculation module used for calculating a pulse time interval deviation value; a comparison module used for comparing repeatedly collected and calculated pulse time interval deviation value of the preset number with a preset threshold value, determining whether the calculated deviation value is bigger than or equal to the preset threshold value, thus determining whether atrial fibrillation exists or not. The atrial fibrillation detector and an intelligent wearable device having same can improve atrial fibrillation discovery rate, so people can self-operate under non-medical conditions, thus carrying out atrial fibrillation detection.

The invention discloses an exerciser beneficial for ankle pump exercises of a patient with foot drop. The exerciser comprises a base which is horizontally arranged, wherein one end, in a length direction, of the base is provided with a supporting plate capable of rotating; a slide rail is arranged in a length direction of the supporting plate; a connecting plate is connected onto the slide rail in a sliding manner; an exercising frame is further arranged between the base and the supporting plate; one end, in a length direction, of the exercising frame is connected with the connecting plate; the other end of the exercising frame is rotatably connected with the base; one end, away from the base, of the supporting plate is provided with an operating rod used for the patient to operate; and a fixator for fixing feet of the patient is further arranged on the exercising frame. The exerciser can effectively prevent formation of thrombus, which causes embolisms of the heart, the brain and lungs, of lower extremity veins from forming, and is further beneficial for recovering limb functions of the lower limbs, so that the patient with foot drop can conveniently carry out rehabilitation training by himself or herself, and can actively participate in own limb rehabilitation of him or her, and therefore, the exerciser is high in comfort level, the cost is reduced, and the working efficiency is improved.

The invention provides a metal-film filtering screen and an air purifying device, and relates to the field of air purification. The metal-film filtering screen is mounted in an air filtering device; the air filtering device is provided with an air inlet and an air outlet; the metal-film filtering screen comprises a medium-efficiency filtering screen and a high-efficiency filtering screen. The medium-efficiency filtering screen more approaches the air inlet relative to the high-efficiency filtering screen; the medium-efficiency filtering screen and the high-efficiency filtering screen both comprise multiple layers of filtering plates; a gap exists between two adjacent layers of the filtering plates; the filtering plates are provided with multiple filtering holes; the filtering plates are made from intermetallic compounds. As the filtering screen is made from a special intermetallic compound, the purification effect is good; a material is quite environment-friendly; moreover, the metal-film filtering screen can be circularly rinsed and repeatedly used; after a client purchases a fresh air ventilator with the filtering-screen material, no any consumable-material expenses exist. In this way, the fussy consumable material replacing action is virtually decreased for the client; meanwhile, the cost is also greatly saved for the client.

The invention relates to an assembly structure of a filter element assembly and a mounting base. The filter element assembly is provided with a mounting head fixed to the mounting base, the mounting base is internally provided with a rotary clamping part and a rotary groove, the rotary clamping part is provided with a clamping part, the mounting head is provided with a clamping cooperation part, and the rotary clamping part is provided with a first station and a second station in the process of reciprocatingly rotating in the rotary groove; when the rotary clamping part is at the first station, the clamping part and the clamping cooperation part are clamped and fixed to fix the mounting head on the mounting base; when the rotary clamping part is at the second station, the clamping part andthe clamping cooperation part are staggered and separated from each other to make the mounting head separated from the mounting base. When a user detaches the filter element assembly, the rotary clamping part is controlled to be rotated to the second station from the first station, the filter element assembly is separated from the mounting base, afterwards, a new filter element assembly is mounted in the mounting base, the rotary clamping part is controlled to be rotated to the first station from the second station, thus assembly of the new filter element assembly is completed, the operationis convenient, the reliability of the mounted filer element assembly is considered, and the problems of shedding, sealing failure and the like caused by misoperation of dismounting and mounting are solved.

The invention relates to a fire hazard rescue robot, which comprises movable vehicle, sensor and protective frame, image sound positioning device, driver, intercom, display and wireless controller. Remote operator can use wireless controller to move vehicle into fire site to find and rescue people; and the positioning device will transmit collected data to the remote controller, to find the people position; remote operator controls the vehicle to approach people; and the people can start the protective frame or drive the vehicle by itself, while the vehicle can be controlled by remote operator.

The invention relates to an assembly structure of a filter element assembly and a mounting base. The filter element assembly is provided with a mounting head fixed to the mounting base, the mounting base is internally provided with a slide block and a slide groove, the slide block is provided with a clamping part, the mounting head is provided with a clamping cooperation part, and the slide blockis provided with a first station and a second station in the processing of reciprocatingly translating in the slide groove; when the slide block is at the first station, the clamping part and the clamping cooperation part are clamped and fixed to fix the mounting head on the mounting base; when the slide block is at the second station, the clamping part and the clamping cooperation part are staggered and separated from each other to make the mounting head separated from the mounting base. When a user detaches the filter element assembly, the slide block is controlled to be translated to the second station from the first station, the filter element assembly is separated from the mounting base, afterwards, a new filter element assembly is mounted in the mounting base, the slide block is controlled to be translated to the first station from the second station, thus assembly of the new filter element assembly is completed, the operation is convenient, the reliability of the mounted filer element assembly is considered, and the problems of shedding, sealing failure and the like caused by misoperation of dismounting and mounting are solved.

The invention provides a surgical postoperative wound detection drug delivery automatic nursing device which comprises a base, a drug delivery nursing part and a leg supporting part, the drug delivery nursing part and the base are arranged at the top of the base, the drug delivery nursing part is in sliding connection through a position adjusting part, and the drug delivery nursing part comprises a linear moving device, a rotating device and a nursing device, the linear moving device is in a hollow cylinder shape, the rotating device is arranged in the linear moving device in a circular ring shape and can slide in the axial direction of the linear moving device, the nursing device is arranged at the position of an inner ring of the rotating device, the rotating device comprises a rotating structure used for driving the nursing device to rotate, and the nursing device comprises a detector and a medicine nursing piece, the leg supporting part is arranged in the axis direction of the linear moving device. The device is easy to operate, convenient to move and adjust in position, capable of automatically applying medicine, convenient for a patient to operate by himself / herself, capable of reducing the labor amount of workers and beneficial to recovery of the patient.

The invention relates to the technical field of nursing devices, in particular to a gynecologic vulva cleaning device adopting a multi-tube structure. The gynecologic vulva cleaning device comprises abox, a base and a storage barrel, wherein the box is fixedly connected to the upper left side of the base, a central shaft is arranged in the box, an upper rotating disc is fixedly connected to the upper part of the central shaft, six first through holes are uniformly formed in the upper rotating disc, six connecting rods are fixedly connected to the middle of the central shaft, the tail ends ofthe connecting rods are fixedly connected with U-shaped frames, medicine barrels are connected in the U-shaped frames in a clamping manner, a lower rotating disc is fixedly connected to the lower partof the central shaft, six second through holes are uniformly formed in the lower rotating disc, a rotating shaft is connected to the front side wall of the box in an insertion manner, six insertion holes are annularly formed in the front end surface of the box, the six insertion holes take the rotating shaft as the center, the included angle formed by every two adjacent insertion holes and the rotating shaft is 60 degrees, the storage barrel is fixedly connected to the upper end surface of the base, and a notch is formed in the right side of the upper end surface of the storage barrel. The gynecologic vulva cleaning device is reasonable in structural design, insertion rods are inserted into different insertion holes by rotating the rotating shaft, so that a spray nozzle sprays different medicine liquids, use of multiple cleaning tubes is not needed, and the gynecologic vulva cleaning device is very convenient.

The invention provides an insomnia treatment instrument and a method for treating insomnia and relates to the field of electronic products. The insomnia treatment instrument comprises a sleep drug releasing assembly and a sleep music playing assembly. The sleep medicine releasing assembly and the sleep music playing assembly are mutually matched to achieve the effect of treating insomnia. The environment and atmosphere created by the use of the two assemblies can achieve the effect of treating insomnia. The pharmaceutical environment (aromatherapy) created by the sleep drug releasing assemblyis relatively long-lasting, and when a user falls asleep, the pharmaceutical environment does not cause any psychological burden to the user, does not cause any additional influence to the user, and enables the user to absorb drugs in an extremely natural and comfortable environment. The music which is played by the sleep music playing assembly and helps to promote sleep (five-tone therapy) cooperates with the surrounding medicine environment, so that the effect of treating insomnia is achieved is more remarkable. The invention also provides a method for treating insomnia. The method is mainlyrealized by the aid of the insomnia treatment instrument.

The invention relates to a precise medicine infusion system. The precise medicine infusion system comprises a precise medicine infusion pump, a driving circuit, a shell capable of being implanted in the body, a soft medicine bag and a pressure switch chamber with certain air pressure. The outer wall of the soft medicine bag can be squeezed when the air pressure in the pressure switch chamber is released, liquid medicine in the soft medicine bag is pumped out through the precise medicine infusion pump, and the liquid medicine can be precisely infused into the body of a patient. The precise medicine infusion system has the advantages of being simple and reasonable in structure, small in size, free of maintenance, capable of allowing medicine to be added multiple times, capable of being implanted in the body, wide in application range, low in power, efficient, safe and accurate in use, convenient to use, and the like.

An automatically retractable needle safety syringe apparatus (10) having an integral safety feature that automatically and immediately retracts the piercing tip end (78) of the needle body (16) after a single use, due to a punch (70) which frictionally engages the foundation of the ferrule (84) and a vacuum created within the syringe body (12) during the process of injecting fluid therefore causing the piercing tip end (78) and the needle body (16) to permanently reside enclosed within the syringe body (12) protectively pressed against the inner surface (28) of the tube (18) thus alleviating needle reuse and accidental needle prickings with contaminated syringe needles and therefore ultimately preventing the transmission of blood-borne pathogens and other diseases by contaminated syringe needles. The method of operation is also disclosed.

The invention discloses a modular photometric analyzer for teaching of instrumental analysis experiment. The analyzer has the advantages of simple structure and low cost, and can be convenient for students to operate and is beneficial to enhancing the practical experiment ability of the students. The analyzer comprises a dark box (10), a power supply module (20), a quartz sample cell (12) which is arranged in the dark box (10), a fluorescence photoelectric conversion module (30) and an ultraviolet light photoelectric conversion module (50) both of which are arranged on the dark box (10), the fluorescence photoelectric conversion module (30) is electrically connected with a first signal processing and display module (40), and the ultraviolet light photoelectric conversion module (50) is connected with a second signal processing and display module (60). The analyzer is mainly used for teaching instrumental analysis experiment, help students fully master theoretical basic knowledge, fully exerts the activity of the students and greatly enhances the experiment skills of the students by a fully opened and small-sized modular self-assembly experimental mode.

An anti-burn cupping comprises a cupping cavity (1), a cupping neck (2) and a pull-in port (3). A depression (5) which is big enough for accommodating combustion dusts is formed on the cross connecting area of the inner wall of the cupping cavity (1) and the cupping neck (2). The depression (5) is formed by surrounding the cupping neck (2). The cupping neck (2) is in a cone shape. The anti-burn cupping has the advantages of good anti-burn effect and simple structure.

The invention provides a liquid skin protective composition comprising a polymer as shown below, and the polymer is dissolved in a solvent. After the liquid skin protecting composition of the presentinvention is sprayed onto the skin, a non-irritating skin protective film can be formed on the skin.

The invention provides a controllable multi-angle nursing sickbed. The sickbed includes a bedstead and is characterized in that the bedstead is provided with a bed plate consisting of a lower bed plate body, a middle bed plate body and an upper bed plate body; the bedstead is provided with slide rails, and each slide rail is provided with a sliding block I with one end of cooperatively connected with a hinge; a sliding groove is formed in the bed plate, a sliding block II is arranged in the sliding groove, a swing rod is hinged to the sliding block II, a first transmission device correspondingly matched with the swing rod and the bed plate is arranged on the bedstead, a second transmission device which is correspondingly matched with the bed plate is also arranged on the bedstead, and thefirst transmission device and the second transmission device are cooperatively connected with a controller through wires. The controllable multi-angle nursing sickbed has the advantages that the structure is simple, the operation is convenient, the bed plate lifting angle is accurate, and the buttocks of a user cannot slide down when the bed plate is lifted.

The invention discloses a wash aid which comprises a machine body, a clothes deposit port in a front plate of the machine body, a machine door for opening and closing the clothes deposit port, a hookarranged on one of the machine body and the machine door, a door lock arranged on the other one of the machine body and the machine door and matched with the hook for locking or unlocking the machinedoor, and an electronic door opening device arranged in a groove of the front plate and used for pushing the machine door open. The wash aid is provided with an auxiliary door opening device which isused for opening the machine door when the electronic door opening device fails. The problem that a door opening system of a machine door of a washing machine in the prior art is complicated in structure and not convenient to use is solved, the structure is simple, space is saved, a user can conveniently conduct operation by himself / herself to solve the problem that a machine door can not be opened, and it is avoided that the machine door can not be opened and clothes are placed in an inner tub for a long time and become smelly.

The invention provides a screw rod drive type lift with an annular handrail. The screw rod drive type lift comprises a lift car, a screw rod capable of rotating around the axis is assembled at the lower part of the lift car, a drive module capable of driving the screw rod to rotate is assembled at the lower part of the lift car, a fixing ring fixed to a building is connected to the lower part of the screw rod in a threaded mode, the annular handrail is assembled inside the lift car, a control circuit is designed inside the handrail, the handrail is connected to a circuit through a pluggable plug, a manual shaft penetrating through a wall of the lift car is designed at the bottom of the handrail, the end of the manual shaft is connected to one end of a chain through a chain wheel in a tensioned mode, and the other end of the chain is connected to the drive module through the chain wheel and a drive shaft. According to the lift, the screw rod is adopted, special lift locking structures are not needed, and use is safer; the annular handrail is more convenient to use, and users can operate the lift conveniently on the conditions of power failures and unattended processing.

The invention discloses a transmission system capable of adjusting tension of base materials and a control method thereof. The transmission system comprises a transmission mechanism and a roller assembly. The transmission mechanism drives the base materials to move along a transmission method. The roller assembly comprises an adjusting roller provided with a first end and a second end. The second end moves relative to a first end selectively. The adjusting roller is used for abutting against with the base materials and allowing the base materials to be arranged between the second end and the first end in a crossed manner. When the second end moves relative to the first end, the axis of the adjusting roller deviates so as to provide component force on the surfaces of the base materials and adjust the tension of the base materials, wherein an included angle is formed between the component force and the transmission direction. Thus, the tension borne by the base materials is evened and the base materials are effectively led to move along the transmission direction, so yield rate of the finished products of follow-up manufacture procedures or processing of the base materials is increased.

The purification device comprises a main equipment pipe, a driving mechanism, a transmission mechanism, an adsorption filtering mechanism and a cleaning mechanism, the driving mechanism is fixedly arranged at an air outlet of the main equipment pipe, and the lower end of the transmission mechanism is fixedly connected with the lower end of the inner side of the main equipment pipe; one end of the upper end is in meshed connection with the driving mechanism, the other end of the upper end is in meshed connection with one end of the adsorption filtering mechanism, and the two ends of the adsorption filtering mechanism are fixedly arranged in the equipment main pipe; the device has the beneficial effects that it can be guaranteed that the first adsorption sheet can adsorb oil dirt for a long time, blockage can be prevented, the maintenance cost is reduced, long-time normal use of the purification device is guaranteed, the structural design is ingenious, automatic operation is simple, automatic deep cleaning can be achieved, and the manual cleaning cost is reduced; and the long-time normal use of the purification device is further ensured.

The invention relates to a water purifier. The water purifier comprises a body and a filter element assembly. A mounting column is arranged on the outer wall of the filter element assembly, the stretching direction of the mounting column is vertical to the dismounting and mounting direction of the filter element assembly, an operating part is arranged on the side portion of the filter element assembly, the body is provided with a rotary shaft allowing the operating part to be rotationally fixed, a sliding groove part is arranged on the operating part, a sliding groove with an open end and a closed end is formed in the sliding groove part, the distance between the open end and the rotary shaft is larger than that between the closed end and the rotary shaft, the mounting column slides between the open end and the closed end of the sliding groove, when the mounting column is located at the closed end, the operating part is located on a first station at which the filter element assembly ispressed on the body, and when the mounting column is located at the open end, the operating part is located on a second station at which the filter element assembly and the body are disassembled andassembled. The operating process is simple and convenient, a user can easily operate the water purifier by himself / herself, dependence on professional maintenance staff is not needed, the maintenancecost is greatly reduced, the reliability after the filter element assembly is mounted is taken into consideration, and the problems such as disengagement and sealing failure caused by improper disassembly and assembly operation are avoided.

The invention belongs to the field of photodynamic sterilization and in particular to a toothbrush-type device for treating periodontitis by using photodynamic therapy. The device consists of a brush head and a brush handle. The brush head comprises a light guide backplane, an LED chip and light guide fibers in brush hair shapes. The brush handle comprises a LED driver circuit, a wire, an external power interface, an external optical signal interface and a fiber connection line. The device can select an internal LED light source mode or an external light source mode. In the internal LED light source mode, the LED chip emits light under the control of the driver circuit, an optical signal is introduced into the gingival crevice by the light guide fibers, and the photodynamic therapy is used to treat the periodontitis. In the external light source mode, the optical signal of an external light source is introduced by an external light signal interface, is transmitted to the light guide fibers through the fiber connection line and the light guide backplane to deeply penetrate into the gingival crevice to treat the periodontitis. The device achieves a purpose of optimizing a treatment effect and alleviating the pain of a patient by improving the shape of a treatment instrument anda treatment mode, and also greatly simplifies a treatment process.

The invention discloses an intelligent control system of a personal care cosmetic instrument. The intelligent control system comprises a control box shell, wherein a display screen is embedded into one side wall of the control box shell; the outer wall of the bottom of the control box is fixedly connected with a supporting rod; the outer wall of the supporting rod is connected with a locating ring in a sliding manner; the locating ring is fixedly connected to the supporting rod through a fastener; one side wall, away from the fastener, of the locating ring is fixedly connected with a connection block; an object placement slot is formed in the outer wall of the top of the connection block; a telescopic rod is horizontally arranged in the object placement slot; protruded structures are arranged on the outer walls of two sides of a fixed part; one side wall, away from a telescopic part, of a movable part is fixedly connected with a limiting ring; a hook is arranged above the limiting ring; the remote end of a control module is connected with a cloud platform; and the remote end of the cloud platform is connected with a mobile control end. The intelligent control system saves resources, saves the space, is simple in structure and can intelligently control equipment.

The invention discloses an electronic sphygmomanometer with an atrial fibrillation detection function. The electronic sphygmomanometer comprises a collection module, a judgment module, a grouping module, a computation module and a comparison module, wherein the collection module collects a pulse signal sequence and extracts and records pulse time intervals; the judgment module judges whether the quantity of the recorded pulse time intervals is twice or more than twice a preset quantity; the grouping module groups a former preset quantity of the pulse time intervals and a latter preset quantity of the pulse time intervals which are sequenced from small to big into two groups; the computation module is used to compute deviation values between the two groups of pulse time intervals; and the comparison module is used to compare each pulse time interval deviation value with a preset threshold so as to determine whether the values exceed the threshold and thus determine whether arrhythmia exists. The electronic sphygmomanometer disclosed by the embodiment of the invention has the advantages that a function of atrial fibrillation detection is set on common home-use electronic equipment with a pulse signal collection function; a user's expenditures can be reduced; and functionality, practicability and a utilization rate of the electronic equipment can be increased.

The invention belongs to the technical field of medical instruments and particularly relates to a multifunctional handheld electric massager. In order to solve the problem that an existing massager with single functionality is inconvenient to operate, the multifunctional handheld electric massager provided herein comprises a handle; the bottom end of the handle is connected with an adjusting stud,the middle of the adjusting stud is sleeved with a top plate, a displacement positioning device is connected to the top of the top plate, the lower end of the adjusting stud is in threaded connectionwith an adjusting nut positioned below the top plate, two sides of the bottom of the top plate are provided with two slide grooves in symmetric distribution, sliders are slidably connected in the twoslide grooves respectively, a bearing support plate is connected to the bottoms of the sliders, and a positioning spindle that is vertically arranged is rotationally connected to the sliders and thebearing support plate. The multifunctional handheld electric massager has multiple functions, provides synchronization of massaging for surface skin and percussive stimulation for deep muscles, can provide multi-face multi-point simultaneous therapy, is convenient for a patient to operate, and can well meet the massaging needs of different parts of bodies different in form.

The invention relates to the technical field of nursing appliances, in particular to a gynecological vulva cleaning device with a multi-tube structure, which includes a box body, a base and a storage bucket. The upper part of the central shaft is fixedly connected with an upper turntable, and six first through holes are evenly arranged on the upper turntable, and the middle part of the central shaft is fixedly connected with six connecting rods, and the ends of the connecting rods are fixedly connected with a U-shaped frame, and the inside of the U-shaped frame is clamped. There is a drug cartridge, the lower part of the central shaft is fixedly connected with the lower turntable, and six second through holes are uniformly arranged on the lower turntable, the front side wall of the box body is inserted with a rotating shaft, and the front end of the box body is ring-shaped with six jacks, The six jacks are centered on the rotating shaft, and the included angle between two adjacent jacks and the rotating shaft is 60°. The storage bucket is fixedly connected to the upper end surface of the base, and a gap is provided on the right side of the upper end surface. The invention has a reasonable structural design, and the spray head can spray out different liquid medicines by inserting the inserting rods into different sockets by rotating the rotating shaft at the same time, without using multiple cleaning pipes, which is very convenient.

The application provides a shifting robot and control equipment thereof, and relates to the technical field of nursing equipment. The shifting robot can shift personnel who are inconvenient to move autonomously, and the equipment is simple in structure, short in preparation time and convenient to operate, and can be conveniently operated or controlled by nursing personnel. A main bearing arm can drive a bearing and supporting structure to rise or fall, and the nursing personnel can lie prone in a bearing and supporting space formed by the bearing and supporting structure to rise or fall along with the bearing and supporting structure. In the process of shifting the nursing personnel, the shifting robot does not need to exert external force to support the nursing personnel, and further does not need the nursing personnel to rely on their own leg strength, and thus the nursing difficulty in nursing work is reduced. The shifting robot has a compact structure, can be used in a smaller space, and improves the nursing level of nursing personnel.

The invention discloses a garment nursing machine. The machine is provided with a machine body, a garment input port formed in a front plate of the machine body, a machine door for opening and closingthe garment input port, a clamping hook arranged on one of the machine body or the machine door, a door lock which is arranged on the other one of the machine body or the machine door and matched with the clamping hook for locking or unlocking the machine door and an electronic door opening device arranged on the front plate and used for pushing away the machine door, and an auxiliary door opening device which is used for opening the machine door when the electronic door opening device fails is arranged on the garment nursing machine. According to the garment nursing machine, the problem is solved that in the prior art, a door opening system of a machine door of a washing machine is complex in structure and inconvenient to use; the structure is simple, the space is saved, and the problemis conveniently solved that when the user operates by himself / herself, the machine door cannot be opened; the situation is avoided that since the machine door cannot be opened, garments are placed inan inner drum for a long time, and the odor is caused.