857results about How to "Novel shape" patented technology

A stent delivery catheter includes at least an inner and outer body, and a specially shaped balloon affixed near one end of both of the inner and outer bodies. At least the outer body is tubular, and the space between the outer and inner bodies defines an inflation lumen for inflating and deflating the balloon. The balloon is designed to surround and hold a compressed self-expanding stent in a small initial size. An inner portion of the cylindrical balloon extends from where it is affixed to the inner body of the catheter shaft at a point proximal to the stent to a distal leading edge at a point distal to the stent. At this leading edge, the balloon is folded back upon itself, and an outer portion of the balloon extends proximally from the leading edge to a point proximal of the stent where it is affixed to the outer body of the catheter shaft. When the outer body is retracted in the proximal direction, the balloon progressively peels back or everts, to progressively release the stent. This peeling action minimizes any friction that may exist between the stent and balloon during stent deployment. The leading distal folded edge of the balloon, both inner and outer portions, are tapered inward. This inner and outer tapering of the balloon portions tends to protect the leading edge of the stent, provides for easier advancement of the catheter system along the desired body passageway for treatment, and minimizes friction as the balloon is retracted or peeled back upon itself.

Potassium titanate is obtained which has a novel configuration, exhibits excellent wear resistance when incorporated in a friction material and shows an excellent reinforcement performance when incorporated in a resin composition. A manufacturing method of the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are also obtained. The potassium titanate is represented by K2TinO(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensity peak (2θ) in the range of 11.0°-13.5° with its half width being not less than 0.5°.

The invention discloses a ceiling type air-conditioning indoor machine, which comprises a shell fixedly arranged in a ceiling, a bottom panel which is arranged on the bottom surface of the shell and on which an air suction inlet and an air outlet are formed, and a turbine fan and a heat exchanger which are fixedly arranged inside the shell, wherein the shell has a cylindrical structure; the bottom panel has a circular structure; and the air outlet has an annular structure. In the indoor machine, the panel is design in a more aesthetic circular structure by changing the conventional shape; the indoor machine has novel appearance and further reduced floor area; air can be supplied at the angle of 360 DEG without dead angles; the heat exchanger is correspondingly set to be a cylindrical heat exchanger which is sleeved at the periphery of the turbine fan; and the heat exchange rate can be further increased, the performance of a product can be improved and the competitiveness of the product can be enhanced.

The invention discloses a production method of a Chinese character art bonsai and a bonsai obtained by the same. By combining the bonsai cultivation technology and Chinese character calligraphy art, the method adopts a Chinese character die designed in advance and enables a non-lignified nursery stock to grow along the Chinese character die through a method of reverse binding and gradual fixing along the stroke traces of the Chinese character die during the growth of the nursery stock according to the growth characteristics of a plant, so that the nursery stock can be fixed and form a Chinesecharacter shape after being lignified; and then, the nursery stock is trimmed and shaped to obtain a new Chinese character bonsai. The entire cultivation process of the Chinese character bonsai disclosed by the invention, from seedling to finished product, needs about 18 months. Thus, the method has the advantages of resource saving, environment friendliness, quick and stable growth and shaping and the like, and is suitable for household cultivation as well as large-scale industrial production; and moreover, the obtained bonsai is beautiful and elegant in appearance, has rich national culturestyle and highly deserves viewing.

An antenna according to this invention comprises a ground pattern; and a planar element that has a feed point and whose edge portion opposite to the ground pattern has a trimmed portion that makes a distance with the ground pattern vary and is composed of at least either one of a curved line and line segments which are connected while their inclinations are changed stepwise, and the ground pattern is juxtaposed with the planar element without fully surrounding the edge portion of the planar element. Since it is possible to appropriately adjust the coupling degree between the ground pattern and the planar element by juxtaposing the ground pattern with the planar element and providing the aforementioned trimmed portion, the wide bandwidth is achieved. In addition, by disposing the ground pattern and the planar element in the aforementioned positional relationship, the entire antenna can also be miniaturized.

A diaphragm circulator for liquid material having an internal circuit provided with at least one material intake orifice for discharging the material. The circulator body defines a propulsion chamber with rigid walls between which a deformable diaphragm is placed in such a way that the edge thereof is adjacent to the intake oriface and the edge is adjacent to the discharge orifice for forming a ripple carrier. A diaphragm-exciting member is arranged on the side of the intake orifice for producing a reciprocating motion on the corresponding diaphragm edge in such a way that the ripple is generated and is provided with the circulator rigid walls which are arranged inside free ripple amplitude envelope surfaces extending along the diaphragm. The diaphragm is associated by at least one edge thereof with means for generating a tension therein at least while the ripple is generated in such a way that during the operation, the diaphragm tension on the side of the discharge orifice is greater than on the side of the intake orifice.

The invention provides a lightweight car body structure, which comprises a core layer (300), a middle layer (200) and an outer layer (100), wherein the core layer (300) is a support framework which is made of aluminum magnesium alloy, the core layer (300) is of a hollow structure of which the section is in a circular, quadrilateral or hexagonal shape; the middle layer (200) is made of plastic, the middle layer is made into a rib structure through a 3D (three dimensional) print technology, and the rib structure is of a honeycomb structure, a mesh structure or a spatial cell body structure; the outer layer (100) is formed by adhering a carbon fiber sheet to the surface of the resin material. In the invention, the weight of the car body is reduced; the high-polymer carbon fiber material and the aluminum magnesium alloy are rationally applied to the structure design of the car body, and properly replace the previous sheet metal structure material; in the condition of guaranteeing the safe strength and rigidity property, the weight of the car body is reduced and the fuel consumption is reduced.

This invention relates to a dual band antenna having a novel shape, which enables miniaturization and bandwidth widening. The antenna includes a dielectric substrate for an antenna including a layer of a planar element having a side edge portion constituted by either one of a curved line and line segments which are connected to each other while their inclinations are changed stepwise, and a substrate on which the dielectric substrate is placed and a ground pattern having a tapered shape with respect to the dielectric substrate is formed. The dielectric substrate and the ground pattern are juxtaposed, and a distance between the ground pattern and the side edge portion is continuously increased to become saturated as a point on the side edge portion moves away from a straight line passing through a feed position of the planar element. A resonant element is connected to the planar element at an end point of the planar element on the straight line passing through the feed position. By providing the resonant element, the dual band antenna can be realized. Besides, by the above structure, miniaturization of the antenna and bandwidth widening can be realized.

Subjects of the present invention are to provide resin particles having high ability and suitable for various purposes and to provide preparation method thereof. This invention provides resin particles each of which is formed by two curved surfaces or by one curved surface and one plane surface, has a boundary line between these two surfaces and satisfies the relationships: <paragraph lvl="0"><in-line-formula>0.1 mum<=D<=500 mum (I) < / in-line-formula><paragraph lvl="0"><in-line-formula>0.05<=d / D<=0.8 (II) < / in-line-formula>wherein D is particle diameter in horizontal direction and d is the maximum height in longitudinal direction in a side view in which the boundary line is placed in horizontal direction.

A ceiling tool assembly has a unique ergonomically curved handle supported by a user at its rearward end with a cantilever rocker-shaped arm and forwardly slanted pistol grip. A curved concave surface conforms to the underarm part of a user's forearm above the elbow and further includes a forwardly slanted pistol grip with stub extension and an upward handle offset bend. Scraping force is provided by handle shape and handle attachments of my scraping unit for easy removal of popcorn from an overhead ceiling. A forearm resting area allows the user to provide either a right handed or left handed lifting force to the scraper unit. The offset portion, provided at the mid point of the handle, together with a handle attachment / design allows a two arm back and forward scraping force to be exerted along the length of the scraper unit.

The invention discloses a spherical granule bacteria cellulose and preparing method thereof and special culture medium. The culture medium provided by the invention comprises carbon, nitrogen source, inorganic salt and growth factor, also comprises coconut water with percentage by volume 0%-80% and carbon source concentration 1-30g / L. The preparing method of spherical bacteria cellulose provided by the invention is to place the production bacterium of bacteria cellulose in the culture medium to oscillate for fermenting or in the fermentation cylinder to ventilate for cultivating. The spherical bacteria cellulose of the invention can be directly applied to the food processing without the cutting operations. The oscillation fermentation needs less nutrition, and is suitable for fermentation cylinder ventilated cultivation, the pollution probability is small, the product yield rate is high, the cellulose product is not traditional film sheets-shaped, and is a bran-new spherical granule-shaped, stabbed spherical or star flower-shaped, the harvesting and the rinsing are easy, especially without extra cutting operations, the spherical granule sizes can be regulated according to the fermentation condition and time.

The present invention relates to an integrated liquid-crystal display television. The television comprises a front frame, a liquid crystal display panel, a backlight module and electronic elements. The backlight module comprises a middle frame and a back board. The middle frame is sheathed in the back board and is firmly connected with the back board so as to form an accommodation cavity. The accommodation cavity is internally provided with a backlight source, a reflective sheet, a diffusion board and an optical diagraph group. The front frame is sheathed at the periphery of the back board and is firmly connected with the back board. The liquid crystal display panel is clamped between the front frame and the middle frame. The electronic elements comprise a power supply board, a movement mainboard and a horn. A bulge is disposed in the inner side of the back board in a protruding manner. The bulge is provided with a plurality of through holes. The electronic elements are disposed in the bulge. A first support foot is integrated at the lower edge of the back board. A second support foot and a third support foot are integrated at the lower edge of the front frame. The first support foot, the second support foot and the third support foot form a base supporting the liquid-crystal display television. The integrated liquid-crystal display television has a simple and elegant structure and a novel appearance, is simple to assemble, has few steps, can be assembled efficiently, is low-cost, and is easy to be ultra-thin.

The invention discloses a major structure of an energy-saving motion device which consists of an introduction orifice that has an inner layer and an outer layer, a fluid-layered channel, a loop hole channel, a lead-out orifice channel, and combines with installed windshields, doors and baffles into a car that has novel model and convenient production, and saves cost; an introduction orifice of lateral fluid that is arranged on a car body and a balancing introduction orifice in the bottom of the car are communicated with a channel, a motor is arranged inside the lead-out orifice, a rotating head that is driven by the motor and a wind indicator that is driven by the fluid are arranged in the channel passed by the fluid, thus driving an electric generator to charge a fuel battery for drivingthe motor. The motor, the rotating head, an infinite variable speed controller, a speed reducer, a compensating gear, two semi-shafts and wheels are connected by control boards; the motor drives the wheels to rotate, and eliminates lifting resistance and reduces fluid resistance; the device has enhanced adherence between the wheels and the ground, thus increasing security and stability; the device major structure is formed by channels, thus saving the structures such as pistons, accelerator pedals and so on, and consequently the invention leads the weight to be lighter than the weight of the existing cars by one fourth and saves over two-thirds energy. .

The invention relates to a down feather and wool mixing expanding sleeping bag, a manufacturing method and a using method. A whole sleeping body is composed of an upper sleeping body piece, a lower sleeping body piece, a nightcap, a bottom barrel, a sleeping body triangular piece, a lifting lug, a closure, a sleeping bag expanding piece and a closure zipper. The sleeping body is composed of the upper sleeping body piece, the lower sleeping body piece, the closure, the nightcap and the bottom barrel, the nightcap is fixedly arranged at the top end of the sleeping body, the bottom barrel is fixedly arranged at the bottom of the sleeping body, the upper sleeping body piece is fixedly arranged at the upper portion of the sleeping body, the lower sleeping body piece is fixedly arranged at the lower portion of the sleeping body, the sleeping bag expanding piece on the closure is installed on the sleeping body through the closure zipper and the sleeping body triangular piece, and an integrated structure is formed through the closure zipper and an expanding piece zipper. The down feather and wool mixing expanding sleeping bag is reasonable in design, novel in structure, attractive in style, light, practical, convenient to pack and carry, easy to manufacture, low in cost, economical, practical, comfortable in sleeping, good in heat retention property and good in breathability, and can be widely applied to field work, and the down feather and wool mixing expanding sleeping bag can become companions and favorable articles for field workers, travelers and evection persons, and is suitable for travelers, alpinists, field workers, outdoor exploration persons and troop officers and soldiers.

The invention relates to an adding wet implement with rotation sprayer. It belongs to the manufacture technology field of domestic electric implements. It is made up of rotation sprayer, base, ultrasonic sprayer and power pin. The down side of the rotation nozzle is jointed with the up side of the base through the ring runner. The center of the base sets driven motor. The driven motor is jointed with the pin through the power line. The center of the driven motor is jointed with the rotation sprayer. The sprayer is fixed at the middle of the base. When using, get the power, give befitting pure water, turn of the button switch, and than the ultrasonic sprayer runs, the rotation sprayer begin to rotate. Under the effect of the centrifugal strength, the mirage sprays around from the rotation sprayer. It has the advantages of reasonable design, simple frame and good usage effect.

The invention discloses an unlocking method of a mobile phone touch screen, wherein a main interface of the touch screen is composed of an unlocking module fixed on the left bottom of the screen, a time displaying module fixed on the right bottom of the screen and a functional module located in the middle of the screen; the functional module comprises a sound module, a photographing module, a short message module, a music module, a telephone module and a homepage module; the functional module is dragged to the unlocking module; the overlapping area of the functional module and the unlocking module reaches 1 / 3-2 / 3 of the area of the functional module, and then two module icons automatically adsorb and overlap to enter corresponding functional module interface. The method has rich unlocking elements, is convenient for user to quickly enter the state, reduces time for the user to find out a main menu or homepage, and has strong picture dynamic performance and high experience; due to the card unlocking, uniformity of concept and whole UI and novel shape are realized, the unlocking module is rich and colorful; after being unlocked, the touch screen can quickly enter other operation pages; and the method is simple in operation and easy to achieve.

The invention relates to a multifunctional natural bamboo decorative accessory. A fixed framework is fixedly arranged above a base; more than two sets of transverse rods are arrayed at left and right sides of the fixed framework in parallel in a mutually-staggered manner; the fixed framework and the transverse rods are glued and fixed by a mortise joint; the fixed framework is glued and fixed by two vertical bamboo sections and a transverse bamboo section through a mortise joint to form an n-shaped frame; each transverse rod is formed by a plurality of sections of bamboo cylinders; a planting opening is arranged in the middle of the upper side of each transverse rod; a water inlet is arranged at one end of the upper side of each transverse rod and a water outlet is arranged at the other end of the lower side of the transverse rod; the water outlet of the previous section of the transverse rod corresponds to the water inlet of the next section of the transverse rod one by one; one end of a water conduit passes through a hollow part inside the vertical bamboo section at one side to reach the water outlet at the topmost part and the other end of the water conduit is connected with a water pump; a thermometer is arranged on the vertical bamboo section at the other side; a bamboo decorative object is arranged at an interval position of the two sets of the transverse rods; a negative ion generator is arranged in the hollow part of the transverse bamboo section of the fixed framework; and transparent decorative patterns are arranged on the front face of the transverse bamboo section.

The invention relates to a recovery processing device, in particular to a recovery processing device for a laundry detergent bottle, and aims to solve technical problems in the prior art. In order tosolve the above technical problems, the recovery processing device is provided. The recovery processing device comprises a base, a moving device, an intermittent device, a first large bracket, a guiding sleeve, a long guiding rod and the like, wherein the intermittent device is positioned above and connected with the moving device; the first large bracket is positioned on the right sides of the moving device and the intermittent device; the bottom of the first large bracket is fixedly connected with the top of the base; and the first large bracket is connected with the moving device. Accordingto the recovery processing device provided by the invention, the intermittent feeding operation can be achieved through the intermittent device, thereby avoiding the blockage; and meanwhile, the laundry detergent bottle can be subject to preliminary processing through the intermittent device, thereby reducing the labor intensity of working personnel.

The invention relates to a preparation method of a functional biological product, belongs to the technical field of biology and particularly relates to a method for preparing phellinus igniarius hypha blocks by utilizing sprouted rice. The method is characterized by comprising the following steps of: preparing a culture medium for production by utilizing most nutritive sprouted rice and a nutrient solution without inorganic salts; and reasonably controlling the inoculation method and inoculation amount of a phellinus igniarius liquid used as a strain, and reasonably arranging the production environment, so as to culture the natural, healthcare, environment-friendly and healthy phellinus igniarius hypha blocks. The phellinus igniarius hypha blocks are the unique combination of phellinus igniarius hypha and the sprouted rice, are more obvious in nutrient, function and efficacy, can be new favorite consumption of people due to beautiful shape, novelty, uniqueness, excellent taste and the like, and can be used for effectively solving the problem that the application of phellinus igniarius medicinal resource is influenced because phellinus igniarius sporocarps cannot be output with high yield due to insufficient wild phellinus igniarius resources and high difficulty in manual culture, and thus the value of the sprouted rice is greatly increased.

A robot-based automatic loading system for cigarette packaging square accessories is characterized by comprising a bulk accessory conveyor system arranged on a gantry-type main support, a robot fixture close to the right side of the gantry-type main support, a bulk accessory wrapper recycling device fixed at the front end of the right side of the gantry-type main support, an automatic bulk accessory waste recycling device fixed at the rear end of the right side of the gantry-type main support, a bulk accessory wrapper withdrawal assisting mechanism arranged on a bulk accessory conveying rack, a synchronous belt conveyor connected to the left side of the gantry-type main support, and a joint robot arranged on the robot fixture, as well as a pneumatic system for providing power for a material transporting system, a material conveying system and a tool cutting system. The robot-based automatic loading system has the following beneficial effects: the production cost is effectively lowered, and the production efficiency is greatly improved; and the robot-based automatic loading system is simple in structure, good in strength and rigidity and stable and reliable in operation, and is efficient and energy-saving.

The invention discloses a cleaning device for a new energy vehicle. The cleaning device comprises a supporting seat, a header tank, a filter screen, a groove, a movable plate, first flushing spray heads, a jack, a bracing plate, a rotary knob, a lifting plate, push rod motors, an L-shaped bracket, a push rod, a mixer, second flushing spray heads, a switch button, a control panel, a water pump, a solenoid valve, a water guide pipe, a drain pipe, an opening, a water supply barrel, function keys, a single chip microcomputer, a heater, a rotating shaft, a connecting rod, a rotor shaft and stirringblades. The cleaning device has innovative design and practical function, the vehicle can be propped up through installing the jack on the supporting seat, and the push rod motors with the first flushing spray heads and the second flushing spray heads are installed on the bracing plate and the lifting plate, a vehicle chassis and the upper portion of a vehicle body are fully flushed and cleaned in a repeated mode, the entire cleaning process is almost completely realized by manual operating the function keys on the control panel, so that the cleaning efficiency is high, time and labor are saved, and the promotion and use are recommended.

The invention provides a glass cover plate, a making method thereof and a mobile terminal, belongs to the technical field of terminal making and solves the problem that existing glass cover plates are basically planar or 2.5-dimensional, serious in homogenization and difficult to meet requirements of people on high-quality appearance. The making method includes: cutting and hot-pressing a glass substrate to obtain a double-curved-face glass substrate, wherein the edges of the front and the back of the double-curved-face glass substrate are arc faces which are identical in bending direction; forming a first area covered by a first preset color on the back of the double-curved-face glass substrate to obtain a double-curved-face glass cover plate, wherein the first area refers to an area, not including a preset middle window area and a preset hole, of the double-curved-face glass substrate. By the scheme, the 3D double-curved-face glass cover plate with a specific color is formed, is novel and attractive in appearance, meets the requirements of the people on high-quality appearance of the glass cover plate and is low in manufacturing cost.

The invention provides a glass cover plate, a production method thereof and a mobile terminal. The glass cover plate and the production method thereof are used for solving the problem that the existing glass cover plates are planar or 2.5D fundamentally, the homogenization is serious, and the requirements of people on high-quality appearance are hardly met. The production method comprises the steps: carrying out cutting and hot-pressing treatment on a glass substrate so as to obtain a hyperboloid glass substrate, wherein edge portions of positive and negative faces of the hyperboloid glass substrate are cambered surfaces, and bending directions of the cambered surfaces of the edge portions of the positive and negative faces of the hyperboloid glass substrate are the same; carrying out spraying, pre-baking, exposure and development treatment on the negative face of the hyperboloid glass substrate for more than twice so as to form a first area covered with more than two layers of first predetermined color and obtain a hyperboloid glass cover plate, wherein the first area is an area, except for a predetermined middle observation window area and predetermined openings, of the hyperboloid glass substrate. According to the glass cover plate, the production method thereof and the mobile terminal, a 3D hyperboloid glass cover plate with specific colors is formed, the appearance is novel and attractive, and thus the requirements of people on high-quality appearance of the glass cover plate are met.

The invention discloses a processing method of a recombined egg product. The processing method is characterized by including the steps as follows: firstly, injecting a layer of egg white in a mold container, cooking or baking the egg white to solidification, injecting a layer of uniformly-mixed yolk in the solidified egg white layer, conducting cooking or baking to solidification and repeating the above operations, thus obtaining the multi-layer recombined egg product of which the egg white and the yolk are layered. Recombined egg products with various flavor and nutritive functions can be produced by adding various fines herbs and spices, as well as various fruits, vegetables, meat, milk and other nutrient components in the egg white and the yolk; in addition, a low-cholesterol recombined egg product can be produced by reducing the amount of the added yolk or using yolk with cholesterol removed; and various bagged products of recombined egg products can be produced by the processing steps of seasoning, marinating, barbecuing, smoking or frying, packaging, sterilizing and the like, and the products are convenient to eat.

The invention relates to a high-speed flexographic printing machine for thin films, which comprises a base, an n-shaped vertical column set and a control circuit. The n-shaped vertical column set fixed on the base is composed of a left vertical column, a right vertical column and a beam fixed between the left vertical column and the right vertical column. An unwinding roller mechanism is disposed on the left vertical column. A winding roller mechanism is disposed on the right vertical column. A first color printing mechanism, a second color printing mechanism and a first heating tank are sequentially disposed on the left vertical column, and a first transfer press roller and a first transfer ink roller are disposed between the first color printing mechanism and the second color printing mechanism. A third color printing mechanism, a fourth color printing mechanism and a second heating tank are sequentially disposed on the right vertical column, a second transfer press roller and a second transfer ink roller are disposed between the third color printing mechanism and the fourth color printing mechanism, and a heating device is disposed on the beam. The high-speed flexographic printing machine for thin films is novel in appearance, reasonable in mechanism design, simple in operation, long in service life and easy in maintenance.

The invention discloses a furniture plate assembly line laminating machine, by setting up pipeline mode film sticker, and a plurality of furniture plates on the lifting table can be pushed onto the conveyor belt on the workbench in turn by the pusher motor, and after the gluing roller coats the furniture board, the film on the rolling drum is uniformly adhered to one end of the furniture board bya worker, and then conveying the furniture board to the end of the workbench through the conveyor belt under the action of the conveyor motor, In this process, the film on the coiling drum will be uniformly adhered to the furniture plate under the action of the hot-pressing roller, and the vacuum pump installed can pump the air between the film and the furniture plate through the suction pipe andthe mesh plate, so that the film on the furniture plate is free from bubbles, so that the film adhesion efficiency of the invention is high and the labor intensity is low, and the invention is recommended to be popularized and used.

A faucet with two outlets includes a main body, an outlet pipe, a hot water inlet conduit, a cold water inlet conduit, a cold water conduit, a filtered water conduit and a switch member. The outlet pipe has an inner channel and an outer channel. Filtered water flows through the inner channel, running water flows through the outer channel. The switch member laterally formed a peripheral wall of the main body, and having a valve core being mounted inside the main body. The valve core has control filtered water or running water outlet from the outlet pipe. The faucet with two outlets respectively outputs filtered water and running water through two different waterways in the outlet pipe and ensures simple structure, convenient operation and multiple water output modes.

The invention provides a manufacturing method of a glass cover plate, the glass cover plate and a mobile terminal, relates to the technical field of terminal manufacturing and aims at solving the problems that existing glass cover plates are basically planar or 2.5D glass cover plates, are serious in homogenization and cannot meet the requirement of people on high-quality appearance. The manufacturing method comprises the steps that an original glass substrate is subjected to cutting and hot pressing treatment to obtain a hyperboloidal glass substrate, wherein the edge of the front face of the hyperboloidal glass substrate and the edge of the back face of the hyperboloidal glass substrate are arc-shaped surfaces of which the bending directions are same; a first area covered with a first preset color is formed on the back face of the hyperboloidal glass substrate to obtain the hyperboloidal glass cover plate, wherein the first area is the area, besides a preset middle window area and preset open pores, of the hyperboloidal glass substrate. According to the scheme, the 3D hyperboloidal glass cover plate with a specific color is formed, the appearance is novel and attractive, the high-quality appearance requirement of people on the glass cover plate is met, and the manufacturing cost is low.

The invention discloses a lever ratchet wheel linkage bicycle, comprising a bicycle frame, a front bicycle wheel, a rear bicycle wheel, a rear wheel shaft and a bicycle wheel drive device, wherein, the bicycle wheel drive device comprises a left lever and right lever up-to-down conversion device and a left ratchet wheel and right ratchet wheel drive device, wherein, the left lever and right left up-to-down conversion device comprises a lever, a lever connector, a frame connector, a sun wheel, a planet wheel, a gear ring and a central shaft; and the left ratchet wheel and right ratchet wheel drive device is a friction-type ratchet wheel mechanism comprising a roller, a slope-type one-way clutch, a ratchet wheel hub and a ratchet wheel connector. In the invention, the drive, speed change and the acting force are wholly centralized on the rear wheel shaft to lead the length of the lever to be 3-5 times of a crank mechanism; the lever can be retracted; a seat cushion can be moved front and back; the pedal rotating angle of both feet is changed to form the action of stepless speed regulation; and the speed is changed by a star wheel structure, so as to lead the transmission to be compact and the operation to be reliable. The invention provides a bicycle which is brand new, has simple structure, high transmission rate, long service life, low failure rate, convenient maintenance and comfort and stable riding.