54results about How to "Strong massage" patented technology

The invention relates to a rolling-type massager with adjustable massaging strength. The rolling-type massager comprises an elevating mechanism, a stroke limiting mechanism and a massage head, wherein the elevating mechanism comprises an elevating motor, a lower mounting plate of the elevating motor, a guide post, a lead screw, a linear bearing and a massage head mounting plate; the tail part of the elevating motor is provided with an aluminium bracket; the stroke limiting mechanism comprises a stroke switch, a stroke switch mounting plate and a stroke probe; the lower mounting plate of the elevating motor is fixedly provided with the guide post and the aluminium bracket, and the middle part of the lower mounting plate is provided with a through hole; the aluminium bracket is internally provided with a turbine wheel; the stroke switch is fixedly arranged on the stroke switch mounting plate; the massage head mounting plate is provided with the linear bearing; the guide post passes through the linear bearing; the lead screw is arranged below the massage head mounting plate; the lead screw passes through the through hole so as to enter the turbine wheel; and the massage head is fixedly arranged at the massage head mounting plate. The rolling-type massager provided by the invention can adjust the massaging strength when in use, can be completely hidden in a mattress or seat cushion at a common height when not in use, and is applicable to the household.

The invention relates to a foot massager, comprising a foot bracket having a receiving cavity, a chassis supporting the foot bracket, a driving mechanism, massage movement, a first swing assembly driving a front portion of the foot bracket to swing relative to the chassis, a first transmission mechanism, and a second transmission mechanism, wherein the first swing assembly swings the front of thefoot by driving the front of the foot bracket to swing, the second swing assembly drives the rear part of the foot bracket to swing by driving the rear part of the foot bracket to swing by driving therear part of the foot bracket, and the first swing assembly and the second swing assembly jointly drive the foot bracket to make compound motion with respect to the chassis, and the second swing assembly drives the foot frame to swing by driving the rear part of the foot frame to swing by driving the second swing assembly. As the second swing assembly and the third transmission mechanism are arranged, the first swing assembly and the second swing assembly jointly drive the foot bracket to perform compound movement, and compared with the prior art in which the foot bracket rotates around a fixed shaft, the foot bracket in the invention has more variations in position, i. e., more bracing actions. The massage of the massage movement is strong and the massage comfort is high.

The invention discloses a base with a massage function for a new energy vehicle. The vehicle base comprises a base body, a cavity is formed in the base body, an air inlet communicated with the exterior of an vehicle and the cavity is formed in the lower end of the base body, an air outlet communicated with the cavity is formed in the side wall of the back face of the base body, a rotating shaft isrotationally connected to the inner side wall of the cavity, and the rotating shaft extends into the air outlet. An impeller, a permanent magnet block, a permanent magnet sheet, a telescopic air bag,a sliding rod, a massage back cushion and a pressure cavity are arranged; the invention discloses a new energy vehicle driving method. All the telescopic air bags convey air to the sliding cavities communicated with the telescopic air bags in sequence; the pressure cavity can store gas output by the telescopic air bag, and the gas is released when the air pressure reaches a certain value, so thatthe sliding rods slide with greater force, the massage force of the massage back cushion is increased, and the massage effect of the base is better.

The invention discloses a novel oral massage toothbrush, which is made of a rubber material. The structure of the brush head part of the conventional toothbrush is changed. The brush head is the leading using part of the toothbrush, and consists of a rubber brush (similar to the brush part of the toothbrush), a brush back massage plate and concave-convex teeth; the bristle of the common toothbrush is replaced by using the rubber brush with the length of 0.5 centimeter; the massage plate with a raised toothed structure is added on the back of the brush head; and the massage teeth with a raised serrated structure are added on the lateral surface of the brush head. The toothbrush mainly comprises the brush head and a handle. The brush head is completely made of the rubber material which is soft and harmless to human body. Each organ of the oral cavity can be massaged during tooth brushing, so that a user is healthy and feels comfortable.

The invention discloses a rolling type micro-massager. The rolling type micro-massager comprises a massage head installation plate, wherein a massage head is installed on the massage head installation plate, a linear bearing is installed in the massage head, a guide column is inserted into the linear bearing, a small bearing fixing block is installed on the bottom of the massage head installation plate, a small bearing is arranged on the bottom of the small bearing fixing block, a guide column fixing plate is connected to the lower end of the guide column, sliding rails are installed above the guide column fixing plate, a motor fixing plate is installed on one side of the guide column fixing plate, a push-and-pull motor is installed on the motor fixing plate and comprises an output shaft, a triangular elevator sliding block is connected to one end of the output shaft and is located on the sliding rails, and the small bearing is in contact with the surface of the triangular elevator sliding block. The rolling type micro-massager has the advantages that the noise is low, larger friction force can be provided under the condition that the power is not changed, the micro-massager is mainly applied to mattresses as well as other household articles such as cushions, the micro-massager is hidden completely when not used, no space is occupied, and the micro-massager is convenient to install.

The invention discloses a massaging device which is characterized in that a massaging head, a rubber sleeve, a first handle, a second handle and a connecting plate are included, wherein the inner ends of the first handle and the second handle are fixed on the two sides of the connecting plate respectively, the massaging head is fixed on the connecting plate, the outer portions of the first handle and the second handle are provided with a first handle sleeve and a second handle sleeve in a sleeved mode respectively, the rubber sleeve is arranged on the outer portion of the connecting plate in a sleeved mode, the first handle sleeve and the second handle sleeve penetrate through the two ends of the rubber sleeve respectively, during using, the first handle sleeve and the second handle sleeve are pressed, and the massaging head is aligned with a massaging portion for massaging. The massaging device can massage the back, the neck, the thighs, the waist and the like of a human body, massaging accuracy is high, a certain part of the body can be massaged stably for a long time in a pointed mode, size is small, weight is light, carrying is convenient, the massaging device can be used in different places, adaptability is high, energy loss is low, and cost is low.

The invention provides a control method for an intelligent cloud seat system. The control method comprises the following steps of acquiring the pressure distributing conditions of a human body sittingon a seat in real time, and transmitting detection results to MCU; calculating out a pressure contact stress quantity average value within front 20 seconds by using the MCU, and transmitting the pressure contact stress quantity average value and the pressure contact real-time stress quantity to an intelligent cloud; by using the intelligent cloud, analyzing to generate corresponding massage time,massage time interval and massage strength according to navigation time and road condition information, and comparing the pressure contact real-time stress quantity at the same time with an average mean of the pressure contact stress quantity at the same time; when quantity variance is greater than or equal to 40 percent, transmitting a reminding instruction to the MCU, and controlling a vibrating device to start by using the MCU and reminding a sitting person of adjusting the sitting posture by using vibration; and analyzing the generated massage time, massage time interval and massage strength by using the intelligent cloud; and controlling massage equipment to massage the waist and the neck of the human body through the MCU. By using the control method, the person can be reminded of adjusting the sitting posture and automatic massage is simultaneously realized.

The invention relates to a multidimensional lumbar disc massage bed, which comprises two bases and a bed board. An adjustment shaft is arranged at the other end of the bed board, and the end of a piston rod of an adjustment electric cylinder is connected with the middle of the adjustment shaft. The middle of the bed board is provided with a cuboid operating area, each of two upper sides of the operating area is provided with two adjustment holes, and a motor frame is slidably arranged under each adjustment hole. A hipbone clamping shaft is arranged at an upper end of each motor frame, the lower portion of each hipbone clamping shaft is connected with a corresponding hipbone motor spindle, each hipbone motor spindle is arranged on the corresponding motor frame, and clamping air bags are arranged on upper portions of the hipbone clamping shafts. By two-directional structural design of hipbone fixed massage and waist massage, the massage bed better fits human physiological curves to improve lumbar disc massage effects. By multi-degree-of-freedom structural design such as crankshafts and waist massage inner and outer rings, completeness in massage is achieved.

The invention discloses physical therapy clothing. The physical therapy clothing comprises a clothing body, a plurality of permanent magnets which are uniformly fixedly connected to the surface of the clothing body, and a massaging device which is magnetically absorbed to one or the plurality of permanent magnets; electromagnets which generate force opposite to that generated by the permanent magnets while electrifying are mounted in the massaging device; the electromagnets without being electrified are tightly attracted to the permanent magnets; two or more than two electromagnets are mounted in the massaging device; each electromagnet is electrically connected with a control module mounted in the massaging device; a storage battery electrically connected with the control module is also mounted in the massaging device; the electromagnets are connected into the massaging device through elastomers. According to the physical therapy clothing, the permanent magnets are uniformly connected to the clothing body; the massaging device can be fixed to the part needing massaging to perform beating massaging; the electromagnets and the permanent magnets can rotate within a certain range after attacking, so that the massaging device can massage arms, legs, head and other part with large bending radian, and the massaging device is free of dead angle of massaging.

The invention discloses a massage clamp which comprises two clamp handles and two working arms; a restoration elastic element is arranged between the two clamp handles; and two massage devices corresponding to each other are arranged on the working arms. The massage clamp is provided with comprehensive functions, practical, portable, usable at any time, easy to operate, labor-saving, powerful in massage strength, not easy to cause operation fatigue due to extended massage time, produces obvious curative effect , and adopts the lever principle by using a hand clamp structure. The massage clamp has the beneficial effects that during the operation process, a locking device is used for keeping a permanent preset pressing state by locking the clamp handles, gives an acupoint lasting massage force, and easily achieves a massage state of one-time pressing and continuous acting force; the massage clamp precisely positions the acupoint, is not easy to deviate during operation, and adjusts the degree of the strength according to the force that an individual can bear over time; the massage clamp has small volume, can be sterilized before use at any time, thus preventing cross infection of skin diseases; no time limit and no space limit exist during use, so that massage treatment can be performed to a human body when discomfort occurs during a ride, an air travel, or queuing; and the massage clamp is easy to carry and operate, time-saving, labor-saving and highly efficient, and produces effects rapidly, so that the massage clamp is more suitable for the modern trend of self health care.

The invention discloses a gravity massager. The gravity massager comprises a base and a massaging device. The surface of the base is provided with a plurality of threaded holes; the massaging device comprises two massaging heads and screw rods connected with the massaging heads, and the screw rods are connected with the threaded holes. Heights of the screw rods can be adjusted according to screwing depths of the screw rods screwed into the threaded holes, and the two massaging heads can be mounted on the base according to distribution of human acupoints. The gravity massager has the advantage that massaging can be carried out under the action of gravity of the massager only by aligning the massaging heads to the acupoints.

The invention discloses a telescopic far infrared footbath bucket. The footbath bucket comprises a base body, a first bucket body and a second bucket are fixed on the upper surface of the base body, the second bucket body is located in the first bucket body, a sleeve tube is connected with the upper surface of the base body, a compression spring is arranged in the sleeve tube, the bottom of the compression spring is fixedly connected with the upper surface of the base body, an extending plate is fixedly connected with the end, away from the base body, of the compression spring, a bucket coveris fixedly connected with the end, away from the compression spring, of the extending plate, two bearings are fixedly embedded in the bottom of the bucket cover, threaded rods are arranged in the twobearings, the outer surfaces of the threaded rods are fixedly connected with the inner rings of the bearings, and threaded holes fitting the two threaded rods are formed in the upper surface of the first bucket body. The telescopic far infrared footbath bucket has the advantages of being convenient to stretch, retract, adjust and perform foot massage on feet, and the telescopic far infrared footbath bucket is convenient for a user to operate.

The invention discloses smart glasses with a heat dissipation function. The structure of the smart glasses includes a right glasses temple, lenses, a glasses frame, a camera, a heat sink, a charging terminal, a left glasses temple, and a Bluetooth headset; and the right glasses temple consists of a shell, acupressure mechanisms, restraint strips, trips, a power switch, and lanyard holes. The leftand right acupressure mechanisms are constrained to the temples of the brain through the restraint strips to make the acupressure mechanisms increase the intensity of massage; a two-way rotating motordrives the massage rotating disk to dredge the blood clockwise or anticlockwise from the temple part; a silicone body is arranged inside a semi-circular convex sphere disc; and the silicone body is used for strutting the semi-circular convex sphere disc; therefore, during the massage of the temple, the fatigue can be relieved, the spirit can be invigorated, the pain can relieved and the brain canbe refreshed; and the smart glasses with the heat dissipation function can continue to maintain concentration of the attention.

The invention provides a bathtub water massage system and a control method thereof. The bathtub water massage system comprises a water pump, a frequency converter, a constant-temperature device, an air pump, a plurality of nozzles and a controller. The frequency converter is used for frequency conversion control of the water pump, and the nozzles are distributed on the wall surface of a bathtub. The water pump pumps water from the bottom of the bathtub through a water pumping pipe, and then water is conveyed to the nozzles through a conveying pipeline. The constant-temperature device is arranged on the conveying pipeline, the air pump is capable of delivering high-pressure air to the conveying pipeline through an air delivery pipe, and the water pump, the frequency converter, the constant-temperature device and the air pump are in electrical connection with the controller. The bathtub water massage system is capable of spraying water according to different laws, constant water temperature can be kept, and user experience is improved beneficially.

The invention discloses wearable massaging equipment. The massaging equipment comprises a cloth body, a plurality of permanent magnets and massagers, wherein the permanent magnets are uniformly and fixedly connected to the surface of the clothes body, the massagers are magnetically absorbed on two or more than two permanent magnets, one surfaces of the massagers are fixedly provided with metal plates which are absorbed with the permanent magnets, and motors are arranged in the massagers; a rotating plate is fixedly connected to a rotating shaft of each motor, at least one driving permanent magnet is fixedly arranged on each rotating plate deviating from a rotating center, and the number of the driving permanent magnets is less than that of the permanent magnets; the field directions of the driving permanent magnets are opposite to that of the permanent magnets, the magnetic field force of the driving permanent magnets is greater than that of the permanent magnets, and the permanent magnets are bounced off corresponding to the metal plates when the driving permanent magnets and the metal plates are sucked. The permanent magnets are uniformly connected to the clothes body, and the massager is fixed to a part to be massaged for convenient beating massage.

The invention provides a transmission device applied to a fascia gun. The transmission device comprises a cylinder provided with a spiral body and a boss; channels are formed on the side wall of the cylinder and winds around the side wall of the cylinder, the left channel located on the front side of the side wall of the cylinder is the same as the right channel located on the reverse side, and the left channel and the right channel are axisymmetric figures with a longitudinal section of the cylinder as an axis; the left channel and the right channel are in butt joint to form the spiral body by penetrating; the boss comprises a bottom table and a raised head structure located right above the bottom table; the raised head structure is connected into the spiral body in a sliding manner. By means of transverse movement of a piston structure, long-travel vibrational massage can be realized, the massage strength is high, and the massage effect is good; the dead halt phenomenon in a massageprocess can be avoided due to no collecting rod; and a piston, a massage head, the cylinder and a motor are coaxial.

The invention provides a massage movement and a massage chair with the massage movement. The massage movement includes a kneading and knocking device and a walking vehicle, wherein the kneading and knocking device is mounted on the walking vehicle through a support shaft in a swing mode, driving gears are arranged on the walking vehicle, and the kneading and knocking device is provided with adjustment gears; the centers of the reference circles of the adjustment gears are arranged on the center line of the support shaft, the adjustment gears are meshed with the driving gears, and the adjustment gears are mounted on the kneading and knocking device in a swing mode through adoption of the support shaft as the center; the kneading and knocking device is also provided with a displacement detection device for detecting the rotation angle of the adjustment gears and an elastic body for providing a support force for the adjustment gears, the massage chair includes a massage rack, and the massage chair further includes the massage movement; and the massage movement is installed on the massage rack, and the walking vehicle can move relative to the massage movement. The massage movement andthe massage chair have a better massage effect on the human body, and have a simple overall structure, good mechanical reliability, low manufacture cost and higher use safety at the same time.

The invention relates to a medical arm massage device capable of alleviating pain. The medical arm massage device comprises a mounting round plate, wherein four top columns are symmetrically welded to the inner wall of the mounting round plate, a massage sliding block is mounted on the top ends of the four top columns, two L-shaped connecting columns are symmetrically arranged on the upper and lower ends of the massage sliding block, respectively, the two L-shaped connecting columns are symmetrically connected to the back of an arc-shaped massage plate, a connecting shaft is arranged in the middle of the back of the arc-shaped massage plate, six elastic massage branched chains are uniformly arranged along the axial direction of the connecting shaft, the top ends of the six elastic massage branched chains are mounted on the right end surface of an expansion plate; five No.3 hydraulic cylinders are uniformly mounted on the right end surface of the massage sliding block, and the top ends of the five No.3 hydraulic cylinders are mounted on the left end surface of the expansion plate. According to the medical arm massage device, the uniform automatic massage function for the arm can be realized, the pain of the arm is alleviated, in addition, the medical arm massage device has the advantages that the massage force is adjustable, the application range is wide, the massage force is uniform, the massage effect is good, the operation is simple and convenient, the work efficiency is high, etc, and therefore, a novel path for arm massage is provided.

The invention discloses a piece of membrane cloth, a massaging device and a massaging method. The membrane cloth comprises a membrane cloth main body, a first conductive layer and a connecting layer.The first conductive layer comprises two conductive portions; each conductive portion comprises a lead group and a first conducting part; the first conducting parts are arranged at starting ends of leads and are electrically connected to the starting ends of the leads; and the connecting layer comprises two contact portions which are arranged on the back side of the first conducting part or the membrane cloth main body. The massaging device comprises a pulse current generator and the membrane cloth; and the pulse current generator is fixed to the connecting layer through magnetic suction. Themembrane cloth provided by the invention is simple in structure, flexible to use, clean and sanitary and convenient to carry; the massaging device can be used in a mode of combining with conductive medium liquid; and according to the massaging method provided by the invention, massaging effects of eliminating fatigue and relieving discomfort can be achieved; and meanwhile, an effect of penetratingskin to enhance functions can be achieved.

The invention relates to massage equipment, in particular to leg muscle group massage equipment capable of promoting blood circulation and used for the rehabilitation physiotherapy department. According to the leg muscle group massage equipment capable of promoting blood circulation for the rehabilitation physiotherapy department, the foot soles of a patient can be massaged to promote blood circulation, meanwhile, the legs of the patient are massaged, and tap water in the equipment can be rapidly discharged according to needs. Leg muscle group massage equipment capable of promoting blood circulation and used for the rehabilitation physiotherapy department comprises a supporting frame, a foot sole massage mechanism is installed at the bottom of the inner wall of the supporting frame, a positioning mechanism is arranged at the bottom of the inner wall of the supporting frame, and the positioning mechanism is matched with the foot sole massage mechanism. The foot massage mechanism is arranged, the foot massage mechanism is matched with the positioning mechanism, foot soles of a patient can be massaged according to needs, and blood circulation can be promoted; the rotating mechanism is matched with the foot massage mechanism, so that tap water in the supporting frame can move, and sediment in the supporting frame is effectively reduced.

The invention provides a massage sofa having a seat portion and a backrest portion; the backrest portion has an accommodating cover, and the accommodating cover is provided with a baffle plate, and the baffle plate separates the accommodating cover into a first accommodating cavity and a second accommodating cavity, wherein the second accommodating cavity is located at a front side of the first accommodating cavity; a flocculating filler is disposed in the first accommodating cavity, a layered filler is disposed in the second accommodating cavity, the baffle plate is provided with a massage airbag, the massage airbag is located between the layered filler and the baffle plate, and the baffle plate is a baffle plate having a stiffness greater than a stiffness of the accommodating cover. The massage airbag of the massage sofa of the invention has a large massage force and the softness of the existing massage sofa.

The invention discloses a massage suite. The massage suite comprises a clothes body, a plurality of permanent magnets and massagers, wherein the permanent magnets are uniformly and fixedly connected to the surface of the clothes body, and the massagers are magnetically absorbed to the one or the plurality of permanent magnets; the massager is internally provided with an electromagnet which is used for generating reversed repulsion to the permanent magnets when the massagers are electrified, and the electromagnet and the permanent magnet are sucked closely when the massagers are not electrified; two or more electromagnets are arranged in the massagers, all magnets are electrically connected with control modules in the massagers, and the massagers are further internally provided with the storage battery electrically connected with the control modules. The cloth body is uniformly connected with the permanent magnet, therefore the massagers are fixed to parts to be massaged for convenient beating massage.

The invention discloses an ankle magnetotherapy protection device with a massage function and relates to the technical field of medical protection appliances. The ankle magnetotherapy protection device comprises an ankle protection shell, wherein the right side of the ankle protection shell is fixedly connected with a foot protection shell, the front face and the back face of the ankle protection shell are each provided with an electric massage mechanism, the front face and the back face of the foot protection shell are each provided with a peculiar smell removing mechanism, each electric massage mechanism comprises an electric massage shell, the electric massage shells are fixedly connected to the front face and the back face of the ankle protection shell, a driving motor is fixedly mounted at the top of an inner cavity of each electric massage shell, and an output shaft of each driving motor is fixedly connected with an extension rotating rod. According to the ankle magnetotherapy protection device with the massage function, a magnetotherapy block and a sponge protection layer are combined, during use, the magnetotherapy block and an artificial magnet filler are arranged, magnetotherapy is conducted on an affected part of a patient through magnetic fields emitted by the magnetotherapy block and the sponge protection layer, the ankle rehabilitation efficiency can be increased, and the reliability of the ankle magnetotherapy protection device is improved.

The invention discloses a physiotherapy clothing, which comprises a clothing body, a plurality of permanent magnets uniformly and fixedly connected to the surface of the clothing body, and a massager adsorbed on one or more of the permanent magnets by magnetic force; An electromagnet that generates reverse repulsion with the permanent magnet when energized is installed, and the electromagnet is tightly attracted to the permanent magnet when energized. Two or more electromagnets are installed in the massager, each electromagnet is electrically connected with the control module installed in the massager, and a storage battery electrically connected with the control module is also installed in the massager; the electromagnet It is connected to the massager through an elastic body. By uniformly connecting permanent magnets on the clothing body, the massager can be fixed to the parts that need to be massaged for hammering massage; after the electromagnet and the permanent magnet are attracted, they can rotate within a certain range, so that the massager can massage the arms and legs Massage at positions with large curved arcs, such as the head, head, etc., to ensure that there is no dead angle in the massage position of the massager.

The invention relates to a massage control method and device of eye massage equipment, the massage equipment and a storage medium. The eye massage equipment comprises a massage equipment body and two symmetrically arranged massage assemblies located on the massage equipment body, wherein each massage assembly comprises multiple massage heads, and the massage heads are annularly arranged at intervals and correspond to the eye sockets of the human body. The method comprises the steps that a selected massage mode is acquired, the massage heads included in each massage assembly are divided into at least two sets of combined massage heads according to the massage mode, wherein the massage heads with the first set number serve as the first combined massage heads, and the massage heads with the second set number serve as the second combined massage heads; and according to the selected massage mode, the first combined massage heads and the second combined massage heads execute rotating massage. According to the scheme, staggered massage can be achieved, the massage strength can be improved, the massage effect can be improved, and the use experience of a user can be improved.

The invention discloses a flatulence treatment device used for the digestive department. The flatulence treatment device structurally comprises a protection board, a placement board, a bed body, a pillow, a massaging device, a soft cushion and a supporting rod. When the flatulence treatment device is used after being improved, massaging magnets are pressed downwards on the belly of a patient under a shaking force function of a spacing seat, elastic drawing wires generate large resilience force, elastic pressure is bounced to the massaging magnets, so that massaging strength of the massaging magnets can be effectively increased, a fat patient can effectively receive the massaging strength, solid pressing blocks and the massaging magnets mutually form a circular arc shape, the solid pressing blocks can be effectively cooperated with the massaging magnets to integrally massage the stomach of the patient, and the flatulence of the patient can be quickly and effectively treated and relieved.

The invention discloses a pressure-intensified massage bathtub. The pressure-intensified massage bathtub comprises a bathtub body and is characterized by further comprising a fan, a pressure distribution valve, a first massage nozzle control valve and a second massage nozzle control valve. The fan is used for supplying air to water pipes. The pressure distribution valve is mounted on the flange ofthe bathtub body. The first massage nozzle control valve and the second massage nozzle control valve are respectively located on two sides of the pressure distribution valve. The pressure distribution valve is connected with the fan, the first massage nozzle control valve and the second massage nozzle control valve through the water pipes. The water pipe connecting the pressure distribution valveand the fan is provided with an upwardly inclined first anti-backflow pipe along a direction from the pressure distribution valve to the fan. The water pipe connected with the air outlet of the fan is further provided with a vertically downward second anti-backflow pipe. The pressure-intensified massage bathtub has the advantages that the air is supplied into the water pipes through the fan, thewater spraying pressure of massage nozzles is intensified, and accordingly the massage strength of water is increased, and a massage effect is improved; the water pipes connecting the pressure distribution valve and the fan are further provided with the first anti-backflow pipe and the second anti-backflow pipe which are used for preventing the water from flowing back into the fan, and the use safety of the fan is increased.