218 results about "Oxygen delivery" patented technology

The invention discloses a respiratory disease oxygen precise conveying system based on a sensor, and relates to the technical field of medical equipment, and the system comprises a sensing module which integrates multiple sensors to collect and process airway and physiological data of a patient; the disease matching module identifies disease types through database comparison; the dynamic adaptation module calculates exclusive oxygen concentration based on a multi-mode fusion initial algorithm; the conveying module executes adjustment; the closed-loop feedback module continuously fine-tunes the oxygen concentration through a closed-loop stepped fine-tuning algorithm to form a closed-loop link, so that accurate dynamic control of oxygen delivery is realized; according to the invention, multi-sensor collaborative acquisition and disease precise matching are combined with a dynamic algorithm and closed-loop feedback, so that individuation and dynamic oxygen delivery are realized, the system avoids misjudgment by relying on a standardized database, and the oxygen concentration, flow and pressure are ensured to be adjusted in real time along with physiological indexes of a patient through multi-parameter collaborative adjustment and stepped fine adjustment; the treatment comfort, the effectiveness and the long-term adaptability are improved.

The invention discloses a humidifying device for medical oxygen delivery, and belongs to the technical field of oxygen delivery, the humidifying device comprises a heating base and a path-controllable humidifying bottle, the path-controllable humidifying bottle is detachably mounted on the heating base, the path-controllable humidifying bottle comprises a humidifying bottle and a plurality of separating sleeves rotationally arranged in the humidifying bottle, and the separating sleeves are detachably mounted on the heating base. A horizontal partition plate which divides the inner space of the humidification bottle into a humidification cavity and an exhaust cavity in the vertical direction is arranged in the humidification bottle, the exhaust cavity is formed above the humidification cavity, the partition sleeve is rotationally arranged between the horizontal partition plate and the inner bottom wall of the humidification bottle, the humidification cavity is divided into a plurality of independent annular cavities from inside to outside through the partition sleeve, and the annular cavities are communicated with the horizontal partition plate. A flow path adjusting assembly is arranged between every two adjacent separation sleeves. According to the humidifying device for medical oxygen delivery, the annular channel is formed in the humidifying bottle, the oxygen humidifying time is prolonged, the oxygen humidifying time is adjusted by adjusting the oxygen flowing path, and then the oxygen humidity is adjusted.

A self-regulating oxygen delivery system (100) for COPD, comprising: an oxygen source designed to provide medical oxygen; a sensor module configured to record physiological parameters such as oxygen saturation (SpO2), respiratory rate and pulse rate; a microcontroller-based control unit that is functionally connected to the sensor module and the oxygen source; and an intelligent flow control mechanism controlled by the microcontroller, the system automatically adjusts the oxygen flow in real time based on the recorded physiological parameters to maintain optimal oxygen saturation levels.

The present application relates to the technical fields of iodine removal of crude salt, and discloses a high-efficiency and energy-saving iodine removal device for crude salt, which comprises a salt dissolving pool assembly, a reagent tank assembly, a reaction tank assembly, a combustion tank assembly and an adsorption tower assembly, mainly solves the problems of low iodine removal efficiency and high energy consumption in the prior art, by injecting fresh brine into the salt dissolving pool, driving the ultrapure water metering pump to dilute, opening the stirring motor to disturb and pre-oxidize the brine, driving the hydrochloric acid metering pump to adjust the pH of the brine, driving the water inlet pump to inject the brine into the reaction tank, adding hydrogen peroxide by the hydrogen peroxide metering pump, opening the ultrasonic vibrator and the aeration ring, and through the synergistic effect of cavitation and micro-bubble aeration, the oxidation reaction is strengthened, the oxygen generated by the reaction is transported to the combustion chamber to mix and burn with hydrogen, the heat energy generated by the combustion is converted into electricity by the thermoelectric generator to supply power to the ultrasonic vibrator, the ultrapure water in the cold liquid cavity absorbs the waste heat to warm up and preheat the salt dissolving, and after the oxidation reaction is completed, the brine is collected into the adsorption tower assembly for adsorption, so that the content of iodine in the crude salt is efficiently removed.

An oxygen supply pipeline for an oxygen pressure regulator, relating to the technical field of pressure reducing devices, includes a connecting cap, a connector, an oxygen supply hose, and an anti-disconnection device. The anti-disconnection device comprises a quick-connect socket, a locking plate, and a locking spring. The locking plate and locking spring cooperate to achieve automatic locking, preventing oxygen supply interruption. The connecting cap communicates with the low-pressure chamber of the oxygen pressure regulator via a safety valve. The safety valve includes an output housing, a valve core, a pressure adjusting screw, and a pressure adjusting spring, ensuring normal oxygen delivery and preventing safety accidents caused by excessive pressure. This utility model's oxygen supply pipeline has a simple structure, is easy to assemble, has low production costs, and can effectively improve the continuity, stability, and safety of oxygen supply, meeting the oxygen supply needs of different scenarios.

The utility model belongs to the technical field of breathing tubes, and particularly relates to a telescopic water accumulation prevention breathing tube for a breathing machine. According to the technology, two corrugated breathing tubes and two connecting tubes are included, the two connecting tubes are located between the corrugated breathing tubes at the two ends, fixing tubes penetrating through the connecting tubes are arranged on the two corrugated breathing tubes and correspond to the two connecting tubes, the fixing tubes are rotationally connected with the connecting tubes, a guide tube of a Y-shaped structure is arranged between the two connecting tubes, and the guide tube is connected with the two connecting tubes. The two water inlet ends of the guide pipe are connected and communicated with the two connecting pipes, the water outlet end of the guide pipe is in threaded connection with a water accumulation bottle used for collecting water accumulated in the corrugated breathing pipe, and a sealing assembly used for dredging or blocking the water outlet end of the guide pipe is arranged at the water outlet end of the guide pipe. According to the corrugated breathing tube, accumulated water in the corrugated breathing tube can be well collected, meanwhile, the sealing performance of the corrugated breathing tube is ensured, and the oxygen supply effect of the corrugated breathing tube is ensured.

The invention discloses a portable emergency breathing device, belongs to the technical field of emergency breathing, and aims to solve the problem that a corrugated pipe in the portable emergency breathing device is prone to being accidentally bent and extruded during use, and then the oxygen supply effect is affected. The portable emergency breathing device comprises a suitcase, a monitoring displayer is arranged in the suitcase, and a power source is arranged in the suitcase; an air supply assembly is arranged in the suitcase, a connecting pipe is arranged in the suitcase, a breathing machine is arranged in the suitcase, a telescopic assembly is arranged in the suitcase, an oxygen inhalation assembly is arranged in the suitcase, and a monitoring assembly is arranged in the suitcase. In case of failure, the bottom holding assembly automatically opens a standby passage, oxygen delivery interruption is avoided conveniently without manual intervention, the emergency reliability is improved through double guarantee, and the device adapts to pipeline accidents in emergency movement.

The invention discloses a food cereal traditional Chinese medicine ash content detector based on a constant weight method and a detection method thereof, and belongs to the technical field of measuring instruments, the food cereal traditional Chinese medicine ash content detector comprises a support shell, an earthquake isolation balance assembly, a constant temperature and humidity unit, a high temperature furnace, a cooling and drying assembly, a sample transfer mechanism and a control unit; the bracket shell is provided with an upper mounting chamber, a heat insulation area and a constant-temperature and constant-humidity balance chamber from top to bottom; a balance module in the seismic isolation balance assembly is arranged in a constant-temperature and constant-humidity balance chamber; the high-temperature furnace and cooling and drying assembly comprises a heating high-temperature muffle furnace, a furnace cover opening and closing mechanism, an oxygen conveying assembly, a cooling water cooling assembly and a dry gas conveying assembly; the upper end of a weighing rod of the balance module is positioned in the heating high-temperature furnace; the sample transfer mechanism and the cooling water cooling assembly are also positioned in the heating high-temperature furnace; the sample transferring mechanism can realize sample bearing, transferring and accurate weighing; the sample can be heated more uniformly through the rotation of the sample disc; and the control unit is linked with each component to realize full-process automatic detection.

A device for activating the mitochondrion, wherein negative charge and reactive oxygen are delivered from outside to the mitochondrion via a negative charge and reactive oxygen delivery unit to serve as material for the mitochondrial redox reaction; and, wherein a calcium ion channel stimulation unit can stimulate an in vivo calcium ion to transport a protein across a calcium ion on an inner membrane of the mitochondrion into a matrix space of the mitochondrion, whereby an influx of the calcium ion promotes the depolarization of the mitochondrion and increases the activity of mitochondrial oxidative phosphorylation.

This invention discloses an oxygen concentrator, a multi-data synchronous detection system, and a detection method for measuring the oxygen concentration and gas flow rate on the oxygen delivery pipeline of the oxygen concentrator. The system includes a mounting base, a concentration sensing unit, and a flow sensing unit. The mounting base is installed on the gas delivery pipeline of the oxygen concentrator and includes a main pipeline and a bypass pipeline. The concentration sensing unit is located inside the main pipeline, and the flow sensing unit is located inside the bypass pipeline. The bypass pipeline is located on one side of the main pipeline, allowing gas entering the main pipeline to be diverted to the bypass pipeline. This invention uses two sensors in parallel to reduce measurement errors caused by different detection sequences.

The present invention provides systems and methods for generally accelerating wound healing, more specifically by supplying oxygen to a wound to accelerate the healing of damaged tissue and / or promote tissue viability. [Solution] The oxygen supply system 200 for the wound 602 includes an outer frame 202 that defines an oxygen outlet. An oxygen generation subsystem is included in the outer frame and coupled to the oxygen outlet. A control subsystem is coupled to the oxygen generation subsystem and is configured to receive humidity information indicating the humidity experienced by the oxygen generation subsystem. The control system then uses the humidity information to control the power supplied to the oxygen generation subsystem in order to control the oxygen flow produced by the oxygen generation subsystem and supplied to a restricted airflow enclosure that passes through the oxygen outlet into contact with the wound.

1. Name of the product in this design: Oxygen delivery pipe connector. 2. Purpose of this design: For use as an oxygen delivery tube connector for medical humidification bottles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model belongs to the technical field of oxygen-enriched combustion, and particularly relates to a lime kiln oxygen-enriched combustion oxygen concentration adjusting device which comprises a gas mixing bin, an oxygen generator and an air blower. An oxygen conveying pipe and an air conveying pipe are arranged on the upper side and the lower side respectively, air inlet buckets are fixedly connected to the ends, close to the gas mixing bin, of the oxygen conveying pipe and the air conveying pipe, a plurality of arc-shaped blades are fixedly connected to the inner surfaces of the air inlet buckets, and the diffusion area of oxygen and air entering the gas mixing bin is increased; the oxygen concentration of the mixed air after stirring and mixing is more uniform, so that the oxygen concentration measurement is more accurate, and the oxygen concentration adjustment failure of the device is avoided.

The invention relates to the field of medical equipment, in particular to a nursing portable oxygen therapy device which comprises an oxygen therapy mechanism and an oxygen mask. The oxygen conveying mechanism communicates with the oxygen mask and is used for conveying oxygen to the oxygen mask; a pressure sensing mechanism used for responding to pressure changes in the oxygen mask is arranged in the oxygen mask, a self-adaptive opening and closing mechanism is arranged on a communication path of the oxygen mask and the oxygen conveying mechanism, and the self-adaptive opening and closing mechanism is used for controlling connection and disconnection between the oxygen mask and the oxygen conveying mechanism based on response information of the pressure sensing mechanism. According to the invention, precious oxygen resources can be almost completely used for effective breathing of a patient, so that the oxygen supply time is prolonged under the same oxygen capacity.

The application discloses an oxygen supply device, which comprises a device body, a pre-filter, an air compressor, a heat exchanger, an electromagnetic valve, a control circuit, an air adsorption device, an oxygen storage tank and an oxygen supply mechanism which are sequentially connected in the device body. The air adsorption device comprises an air conveying structure, an oxygen conveying structure, a nitrogen output structure and at least two molecular sieve towers which are connected in series. The molecular sieve towers have a first working state of adsorbing oxygen and a second working state of backwashing and discharging nitrogen. The oxygen supply device further comprises a gas pressure sensing detection member and a gas pressure elastic detection member which are arranged in an air inlet cavity. With the gradual increase of the air pressure in the air inlet cavity, the gas pressure sensing detection member and the gas pressure elastic detection member are triggered in sequence to switch the molecular sieve towers from the first working state to the second working state. The oxygen supply device can quickly discharge nitrogen in the air adsorption device, thereby improving the efficiency and quality of air oxygen production.

1. Name of the product in this design: Nasal oxygen cannula (end-tidal carbon dioxide collection type). 2. Purpose of this design: This design is intended for connection with oxygen delivery equipment to provide oxygen to the human body. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model relates to the technical field of rescue equipment, and discloses a snowfield rescue breathing control device which comprises an oxygen mask, an oxygen pipe and an oxygen bottle, a flexible heating film is arranged on the inner surface of the oxygen mask, and a first controller and a GPS positioning module are arranged in the oxygen mask. A collecting shell is further arranged at the bottom of the oxygen mask body, absorption cotton is arranged in the collecting shell, two elastic bands are arranged on the rear side of the oxygen mask body, an oxygen spraying opening is further formed in the outer side of the oxygen mask body, and two micro fans are further arranged on the outer surface of the oxygen mask body. Wherein the two miniature fans are used for air inlet and air outlet respectively. According to the oxygen supply system, multiple anti-freezing design and the flexible solar panel power supply technology are adopted, stable operation of oxygen conveying in the low-temperature environment is guaranteed, meanwhile, long-time endurance is achieved, and compared with the prior art, the problems that an oxygen supply system is insufficient in reliability and endurance are solved.

The utility model belongs to the field of freshwater pond culture, and particularly relates to a freshwater pond culture aerator which comprises an L-shaped supporting plate. A mounting plate is fixedly connected to the top of the L-shaped supporting plate, a driving motor is arranged on the front face of the mounting plate, a transmission rod is fixedly connected to the output end of the driving motor, and a driving assembly is connected to one end of the transmission rod; the driving assembly comprises a toothed shaft A fixed to one end of the transmission rod, the toothed shaft A is in transmission connection with a toothed shaft B through a toothed belt, and a directional hole is formed in the toothed shaft B; through the toothed belt transmission design of a toothed shaft A and a toothed shaft B in the driving assembly, the synchronous rotation function of a stirring ring and a long oxygen conveying pipe is achieved, the problem that the oxygen dissolving efficiency is low due to the fact that stirring and oxygen conveying positions of a traditional aerator are separated is solved, the stirring ring stirs water flow to enable oxygen to be evenly diffused, and the oxygen dissolving efficiency is improved in combination with micropore release of an oxygenation head.

The application provides an energy-saving powder spheroidizing furnace, and relates to the technical field of powder spheroidizing equipment. The energy-saving powder spheroidizing furnace comprises a furnace body, a powder conveying pipe, an inner layer oxygen conveying pipe, a fuel gas conveying pipe, an outer layer oxygen conveying pipe, an exhaust gas recovery pipe, a heat exchanger and a cyclone guide pipe. The flow of the exhaust gas waste heat recovery pipe flows through the heat exchanger as a heat source to preheat the powder, the inner layer oxygen, the fuel gas and the outer layer oxygen. The cyclone guide pipe enables part of the airflow in the exhaust gas recovery pipe to enter the furnace body in a tangential direction of the inner wall of the furnace body, thereby forming a wind field that flows upwards in a spiral shape in the furnace body. The exhaust gas recovery pipe can be communicated with an exhaust fan for discharging exhaust gas, so as to recover exhaust gas with a temperature of up to 200 DEG C and lead the exhaust gas to the heat exchanger as a heat source to preheat the powder, the inner layer oxygen, the fuel gas and the outer layer oxygen, thereby reducing the consumption of oxygen required for fuel gas combustion.

The utility model relates to the technical field of medical instruments, and discloses an end-tidal carbon dioxide monitoring and collecting tube for children, which comprises a collector, a collecting cavity is arranged in the collector, an oxygen inlet hole, an oxygen outlet hole and a carbon dioxide outlet hole which are communicated with the collecting cavity are arranged on the collector, the oxygen inlet hole is connected with an oxygen catheter, and the other end of the oxygen catheter is connected with an oxygen generator. The oxygen outlet hole is communicated with a nasal oxygen tube matched with the nasal cavity of the human body, the carbon dioxide outlet hole is connected with a carbon dioxide collecting tube, and the other end of the carbon dioxide collecting tube is connected with an end-breath carbon dioxide monitor. The oxygen inlet hole is provided with an input one-way valve opened towards the gathering cavity; and the carbon dioxide outlet hole is provided with an output one-way valve opened towards the gathering cavity. According to the collecting tube, sufficient gas flow is provided for clinical treatment of children, meanwhile, the amount of sampled carbon dioxide gas is guaranteed, the moisture isolator is arranged, water vapor and secretions can be further filtered, and the effect of monitoring the breathing condition of a patient in real time is achieved.

The application provides an oxygen production device and an air conditioner with the same. The oxygen production device comprises a shell, an air inlet channel, a nitrogen outlet channel and an oxygen outlet channel arranged on the shell, an oxygen production assembly arranged in the shell, at least a part of the oxygen production assembly being arranged opposite to an air outlet of the air inlet channel, so that air flowing through the air inlet channel is separated into oxygen and nitrogen after flowing through the oxygen production assembly, the nitrogen being discharged to the outside of the shell through the nitrogen outlet channel, an oxygen delivery channel arranged in the oxygen production assembly and communicated with the oxygen outlet channel, the oxygen delivery channel being used for outputting the separated oxygen to the oxygen outlet channel, so as to discharge the oxygen to a predetermined position, and a power component arranged in the shell and located on a side of the oxygen production assembly away from the air outlet, the power component being used for sucking the air outside the shell into the shell through the air inlet channel and discharging the nitrogen separated by the oxygen production assembly. The application solves the problem of complex structure of the oxygen production device in the prior art.

The utility model discloses a novel metal gas cutting sleeve pipe, including fixed base, outer sleeve, arc throat pipe and arc inner tube, outer sleeve sets up on one end of fixed base, arc throat pipe sets up on the other end of fixed base, just with outer sleeve intercommunication, arc inner tube arranges in outer sleeve, fixed base and arc throat pipe, and arc inner tube is connected with outer sleeve through the limiting piece movably, the inner arc wall of arc throat pipe is equipped with oxygen delivery channel, the utility model discloses through the outer wall of arc throat pipe additional oxygen delivery channel, effectively avoided the space of oxygen pipe insertion in arc throat pipe, realizes oxygen delivery channel relative independence, can be connected with the gas duct through oxygen supply device and realizes the delivery of oxygen, to guarantee the patient to obtain enough oxygen source in the operation of breathing endoscope, and the oxygen delivery channel is equipped on the inner arc wall of arc throat pipe, can effectively save the space, avoids the discomfort of the patient wound part through the additional pipeline.

The application discloses a farm manure treatment tank and an egg chicken manure treatment method, and relates to the field of sewage treatment equipment. The rotating air distribution pipe is arranged in the sludge layer of the aeration tank in a uniform distribution manner, and when the aerator supplies air to each rotating air distribution pipe in the active sludge layer of the aeration tank through the air distribution pipe network, the rotating air distribution pipe can rotate under the drive of the air supply pressure, and oxygen is circularly delivered into the active sludge layer, so that the oxygen delivery range is improved, the oxygen and the active sludge are fully contacted and mixed, the oxygen supply effect on the aerobic bacteria in the active sludge is improved, the active sludge layer in the aeration tank can be stirred by the rotating air distribution pipe, the mixing uniformity of the active sludge and the oxygen is improved, and the sewage purification treatment effect is improved. When the rotating air distribution pipe rotates to distribute air, the swing driving assembly can drive the rotating air distribution pipe to reciprocally swing up and down, so that the air distribution range and the stirring effect of the rotating air distribution pipe are improved.

This disclosure describes hardware for microfluidic chips and an associated support module for facilitating operation of one or more microfluidic chips. The microfluidic chips described herein are designed for supporting multiple different tissue types, including kidney tissue, liver tissue, adipose cells, and so forth. Chip geometry facilities fluid flow through one or more channels of the chip with a particular flow rate. For example, shear forces are reduced where needed to ensure proper flow rate of fluid in the channels. The chamber geometry and the geometry of the channels ensures that a desired amount of oxygen is delivered to sample cells or tissues in a controlled manner.

The utility model discloses a kind of anti-falling oxygen uptake tubes, including sleeve, the sleeve inner wall is the conical shape corresponding with the gas outlet pipe appearance of oxygen inhaler, locking rod is set through on the sleeve, the axis of locking rod and sleeve is perpendicular, the locking rod includes the sliding portion of cylindrical and the locking portion of cylindrical fixedly connected in the one end of sliding portion along axial direction, the sleeve is fixedly connected with the sealing gasket of center opening in its smaller one end, the end of oxygen delivery tube is fixedly connected with the one end of sleeve close to sealing gasket and is communicated with the hole of sealing gasket center, after the gas outlet pipe is inserted to sleeve, the locking portion is clamped on the flange on gas outlet pipe, the sealing gasket is pressed in the outer end of gas outlet pipe.The utility model can be operated by single hand, since sleeve and pipe body are connected by passing through groove and clamping locking portion on the flange of groove side, sleeve, pipe body and locking portion are all rigid components, even if oxygen delivery tube is subjected to tension, sleeve and pipe body also cannot be loose.

The utility model discloses a nose skin protection film which comprises a protection film body and air holes, one layer of air holes are formed in the surface of the protection film body at equal intervals, an installation pad is arranged on the front side of the protection film body in an attached mode, a binding belt is correspondingly arranged on the outer side of the installation pad, and the binding belt is arranged on the front side of the protection film body. Meanwhile, the size of the binding belt is larger than that of the mounting pad, and air pipes penetrate through and are connected to the inner sides of the mounting pad and the binding belt. According to the nose skin protection film, the mounting pad is arranged, the mounting pad is arranged on the front side of the protection film body in an attached and sewn mode, then the air pipe is connected to the outer side of the mounting pad in an attached mode through the anti-skid pad, and when the air pipe is clamped and positioned, the air pipe only needs to be attached and extruded to the outer side of the anti-skid pad; then the air pipe can be clamped and positioned through the binding belt, the phenomenon that the skin is injured due to indentation caused by the fact that the air pipe is directly attached to the skin is avoided, and the oxygen delivery comfort of the baby is improved.

The utility model relates to the technical field of sewage treatment equipment, and discloses a combined anaerobic ammonia oxidation sewage treatment device which comprises an aeration chamber, a water inlet is formed outside the aeration chamber, a fan is arranged on the left side of the aeration chamber, an air inlet pipe is fixedly mounted outside the fan, and an exhaust hopper is fixedly mounted at the top of the aeration chamber. By means of the aeration mixing mechanism, a motor is started, a piston is driven to convey oxygen into sewage, the dissolved oxygen amount is increased, the decomposition efficiency is improved, meanwhile, the mixing mechanism is driven, so that the dissolved oxygen amount in water can be rapidly increased, and the water quality is improved. According to the sewage treatment device, waste in sewage is decomposed quickly, decomposed water is transferred into a disinfection bin through a disinfection mechanism, harmful substances in the water are removed through a disinfection pipe, then the harmful substances are discharged and utilized, reutilization of resources is guaranteed, environmental pollution and influence on life of people are avoided, and the utilization rate is increased.

The present invention relates to an enhanced sonodynamic therapeutic agent using a liposome having the ability to transfer oxygen, and more particularly, to lipid nanoparticles having the ability to transfer oxygen in which perfluorocarbon (PFC) and indocyanine green (ICG) are loaded inside liposomes to increase the efficiency of sonodynamic therapy.

The utility model relates to the technical field of oxygen production station oxygen delivery, and discloses a centralized oxygen production station oxygen delivery pipeline quick connection fitting which comprises a supporting frame, a connecting pipe is fixedly installed on the top of the supporting frame, delivery pipes are arranged at the two ends of the connecting pipe, a connecting mechanism is arranged outside the delivery pipes, and the connecting mechanism is connected with the connecting pipe. An anti-mistaken-touch mechanism is arranged outside the conveying pipe, the inserting pipe is inserted into the connecting pipe, the control block is pulled up to enable the retaining ring to be clamped outside the buckling block, and therefore the conveying pipe and the connecting pipe are installed, the conveying pipe is installed rapidly, no extra tool is needed, and through cooperation of the second sealing ring and the first sealing ring, the anti-mistaken-touch mechanism can be used for preventing mistaken touch. The connecting pipe and the conveying pipe are higher in installation sealing performance, the problem of oxygen leakage is avoided, the protective cover is inserted into the two arc-shaped rubber strips, installation of the buckling block and a mechanism connected with the buckling block is protected through the protective cover, and mistaken touch is avoided.