109 results about "Inertial effect" patented technology

The invention discloses an integrated chip system for high-throughput sorting and counting detection of biological particles, and an application. The chip system comprises a main microfluidic chip, a micropipe, a sample liquid micropump, an exchange liquid micropump, a first waste liquid collecting device, a second waste liquid collecting device, a third waste liquid collecting device, laser emitters, photoelectric conversion devices, optical fibers and a computer, wherein the main microfluidic chip comprises an asymmetric curved flow path, a first branch channel, a second branch channel, a third branch channel, a main flow path, a branch flow path, aligning marks, etc. The system utilizes the asymmetric curved flow path to realize pre-focusing and sorting for the particles, utilizes a liquid changing flow channel to realize change of a carrier liquid of to-be-tested particles and particle cleaning, and utilizes a viscoelastic effect and an inertial effect of a viscoelastic fluid to realize focus of single equilibrium position of section centers of the particles. The system does not need a sheath liquid, complex pre-cleaning of the particles, and optical alignment, has advantages of high speed, high precision, integration, miniaturization, automation, low cost, simple production process, easy batch production, etc.

FIG. 3 illustrates a system in which gravitation and inertial effects on platen verticality and sagging are compensated by an anti-tilt actuator (68, 70). Specifically, and particularly with the location of a heavy weight mold half (60, 62) on a platen (48, 50), platen tilting (58) and front face sagging occurs as a consequence of at least one of: i) the overhanging mass of the mold half; ii) inertia effects caused by stroking of the platen. A hydraulic actuator (68, 70) secured beneath the platen is either set to offset only gravitationally-related sagging of the mold half (60, 62) by providing a compensating upward force (relative to a stable clamp base 80), or otherwise its upward force can be dynamically adjusted also to compensate for swaying or tilting of the mold-platen assembly caused by stroke cylinder (98) operation and related inertia / momentum effects. Preferably, a level sensor (94) measures and communicates a degree of horizontalness / verticality of the platen (48, 50) to a machine controller (88) which, in turn, generates a control signal (87) to cause variation in cylinder pressure in the anti-tilt actuator (68, 70), thereby achieving substantially continuous alignment between the mold halves (60, 62) and reduced component wear.

The invention relates to an inerter and damping controllable magneto-rheological inerter device and a control method thereof. The device comprises a cylinder, a piston, a piston rod, long and thin pipes, a thick pipe, a magneto-rheological fluid, switch valves, MR (magnetic resonance) conductors and a damping hole. According to the inerter and damping controllable magneto-rheological inerter device and the control method thereof, an apparent viscosity changing process of the magneto-rheological fluid is a continuous, stepless and reversible magneto-rheological effect under the action of an applied magnetic field, simultaneously, the low viscosity of the magneto-rheological fluid without the applied magnetic field and an inertial effect of the magneto-rheological fluid flowing in the long and thin pipes are utilized, the two effects are integrated in one device, further, the switch valves are adopted to control switching on and off of the long and thin pipes which have different pipe diameters and are filled with the magneto-rheological fluid, then the inerter is adjusted in a stepping manner,; and damping is adjusted steplessly by changing the magneto-rheological viscosity through the applied magnetic field simultaneously According to the invention, requirements for semi-active control when dynamical combination adjustment of inerter and damping is applied to a vibration isolation device for engineering are met, so that mounting and using are facilitated, the cost is reduced, and the production efficiency is improved.

The present invention is directed to implanting ions in a workpiece in a serial implantation process in a manner that produces a scan pattern that resembles the size, shape and / or other dimensional aspects of the workpiece. This improves efficiency and yield as an ion beam that the workpiece is oscillated through does not significantly “overshoot” the workpiece. The scan pattern may be slightly larger than the workpiece, however, so that inertial effects associated with changes in direction, velocity and / or acceleration of the workpiece as the workpiece reverses direction in oscillating back and forth are accounted for within a small amount of “overshoot”. This facilitates moving the workpiece through the ion beam at a relatively constant velocity which in turn facilitates substantially more uniform ion implantation.

An acceleration sensor having a vibrating body includes: a base fixed to a pedestal; an oscillating arm extended from the base in a beam-like shape, oscillating transversally in a planer direction at a predetermined resonant frequency. Here, the oscillating arm includes: an oscillating block defined by a through hole opened through a thickness direction at a widthwise center of the oscillating arm, the through hole extending in a lengthwise direction thereof; an added mass being a junction of a distal end of the oscillating block defined by the through hole; and an excitation means installed on the oscillating arm. At this time, the oscillating arm is supported by the base and by the added mass, either in a pseudo-dual anchor structure or a single anchor structure. With the above configuration, the acceleration sensor detects a resonant frequency variability of the vibrating body caused by an inertial effect of the added mass under acceleration.

The invention relates to a micrometer-level particle high-throughput concentration microfluidic device with adjustable and controllable treatment throughput. The microfluidic device comprises three modules; a fluid separating module is used for uniformly distributing samples into function modules according to the flow rate requirement; each layer of function module is formed by bonding an upper template and a lower template, the sample flows into the corresponding modules via an entrance of each layer and is treated by a spiral flow channel, and target liquid and waste liquid are respectively guided out of two exits; the whole device can realize the vertical stacking of the multiple function modules via the upper and lower bonding mechanism of a Lego model, and the target liquid and waste liquid outlets of each layer are respectively positioned on convex cylinders of the Lego, and are vertically communicated; under the lowermost layer of function module, a bottom fluid collecting module is stacked, and the target liquid and the waste liquid are respectively gathered and then flow out. The microfluidic device has the advantages that by adopting the mcirofluid channel structure, the samples with different treatment throughputs can be quickly concentrated by the Lego module with adjustable layer number, the concept of fixed treatment throughput in the single microfluidic chip is broken through, and the effect of high throughput and continuous fluid concentration of micrometer-level biological particles is realized by the microfluid inertial effect.

The invention discloses a microfluidic device for sorting cells and a method for using the same. The device is provided with a pre-focused flow channel performing waveform stretching in a flow path, and cellular micro-particles in a sample solution are gradually collected to the center of the flow path through a microfluidic viscoelastic effect and an inertial effect; and through an arc-shaped bifurcation flow channel and a sample sorting flow channel, the cellular micro-particles are pushed away from the wall by the combined action of a wall-induced inertial lifting force and an elastic forceinduced by the viscoelastic fluid. Different-sized cells are subjected to different thrusts, so that when the different-sized cells migrate in the sample sorting flow channel, an enough distance difference is generated by accumulation to finally achieve an effect of separation and collection. A microfluidic pipe used in the device is small in size and low in cost. An external field generation device is not required, the sorting accuracy is high, and no damage is caused to the cells. According to the method for using the microfluidic device, the sorting of cells of different sizes can be achieved only by injecting a sample solution into a sample inlet at a specific initial flow, and the microfluidic device is simple to operate and convenient to use.

The invention provides a steering-by-wire system based on a hydraulic inerter. The steering-by-wire system comprises a steering wheel, an upper steering column, a gear rack transmission mechanism, the hydraulic inerter, an aligning motor, a front axle, a steering motor, an ECU, an angle sensor and the like. Magnetorheological fluid is integrated to the hydraulic inerter, the viscosity of the magnetorheological fluid is changed by changing the magnetic induction intensity of the periphery of the hydraulic inerter, and accordingly, the purpose of adjusting the damping force of the hydraulic inerter is achieved. The road feel of steering inertia of the steering wheel is simulated through the dynamic inertial effect of the hydraulic inerter, and the steering assistance and feedback force are optimally designed through the adjustable damp characteristic of the magnetorheological fluid in the hydraulic inerter. Compared with traditional steering-by-wire devices, through the steering-by-wire system, the road simulation function of steering wheel is achieved better, and the control stability and driving safety of a vehicle are improved.

An acceleration sensor having a vibrating body includes: a base fixed to a pedestal; an oscillating arm extended from the base in a beam-like shape, oscillating transversally in a planer direction at a predetermined resonant frequency. Here, the oscillating arm includes: an oscillating block defined by a through hole opened through a thickness direction at a widthwise center of the oscillating arm, the through hole extending in a lengthwise direction thereof; an added mass being a junction of a distal end of the oscillating block defined by the through hole; and an excitation means installed on the oscillating arm. At this time, the oscillating arm is supported by the base and by the added mass, either in a pseudo-dual anchor structure or a single anchor structure. With the above configuration, the acceleration sensor detects a resonant frequency variability of the vibrating body caused by an inertial effect of the added mass under acceleration.

A system in which gravitation and inertial effects on platen verticality and sagging are compensated by an anti-tilt actuator (68, 70). A hydraulic actuator (68, 70) secured beneath the platen is either set to offset only gravitationally-related sagging of the mold half (60, 62) by providing a compensating upward force (relative to a stable clamp base 80), or otherwise its upward force can be dynamically adjusted also to compensate for swaying or tilting of the mold-platen assembly caused by stroke cylinder (98) operation and related inertia / momentum effects. Preferably, a level sensor (94) measures and communicates a degree of horizontalness / verticality of the platen (48, 50) to a machine controller (88) which, in turn, generates a control signal (87) to cause variation in cylinder pressure in the anti-tilt actuator (68, 70), thereby achieving substantially continuous alignment between the mold halves (60, 62) and reduced component wear.

Permeability of a fluid through a saturated material is determined by measuring the dynamic response of that saturated material to shaking vibrations and / or shear wave propagation, and then mapping the dynamic response (preferably, viscoelastic stiffness and damping properties) to an invented model (called “KVMB”) that yields the property of permeability. The preferred embodiments may use shear waves, inertial effects, and / or transmission effects, but preferably not compression, to force fluids through the pores. The mapping preferably predicts two possible mappings to permeability, coupled and uncoupled. The preferred methods are both internally consistent and directly related to known laws of physics rather than dependent on empirical calibrations. In use, for example, one may use a porosity log (conventional neutron or sonic) and recordings of SH-waves to obtain damping ratio, followed by locating of the damping ratio on a KVMB map that depends on porosity, and choosing of one of the two possible permeabilities indicated by the mapping, wherein the best choice is typically the largely coupled case.

The invention provides a fuel cell bipolar plate and a method. A plurality of convex-concave composite structures are arranged on a runner surface of a runner on a surface of the bipolar plate and arearranged in an array way, the convex-concave composite structures are protruding semi-spherical bodies, and a circle of pit with semi-circular radial section is arranged at a circumference of a bulge. The fuel cell bipolar plate is simple to process and manufacture, and only the convex-concave composite structures are arranged at a surface of a flow field of the bipolar plate; by the convex-concave composite structures, a liquid drop contact angle can be greatly increased, the hydrophobicity of the runner surface is improved, even the bipolar plate obtains super-hydrophobicity, so that moisture is difficult to remain on a wall of the flow field, the circulation of the flow field is maintained, and the performance of a fuel cell is improved; convection can be caused when a fluid passes through, and the oxygen supply from the flow field to a catalyst layer is greatly improved so as to cause higher local concentration and smaller concentration polarization; and eddy is generated betweentwo of the convex-concave composite structures when the fluid flows through the convex-concave composite structures, the moisture accumulated in a gas diffusion layer is removed by an inertia effect,so that water management is improved.

The present invention discloses a vacuum chamber having operating pressures in the ultra-high vacuum (UHV) range (10−8 torr to 10−13 torr) and incorporating transparent windows, said windows constructed from transparent materials (preferably glass), and having low helium permeability velocity under operating and storage conditions. Embodiments may also contain surface coatings on windows to reduce helium permeation. Also disclosed herein is a method for vacuum processing said chamber by heating entire chamber and exposing the inside and outside of the chamber windows to helium free environments. Methods for final sealing said chamber are also discussed. The vacuum chamber is useful as a container for optically-cooled atoms for use in quantum information and atomic clocks and as a sensor for magnetic fields, gravitational fields, and inertial effects.

The invention provides an anti-tilting device for a meal delivery robot. The anti-tilting device for the meal delivery robot is arranged on the lower portion of the restaurant meal delivery robot. The anti-tilting device comprises a support plate, a balancing weight, a support and a push mechanism. The support plate is fixedly arranged on a base of the restaurant meal delivery robot. The support is fixed to the support plate. The push mechanism is arranged on the support. The balancing weight is slidably connected to the push mechanism. The balancing weight slides in the linear walking direction of the meal delivery robot. The center of gravity of the balancing weight is arranged under the center of gravity of the meal delivery robot. According to the anti-tilting device for the meal delivery robot, the balancing weight is designed for playing a balancing function; and when the meal delivery robot encounters an obstacle, the center of gravity of the robot shifts forwards under the inertial effect, and the push mechanism pushes the balancing weight backwards to balance the tilting caused by forward-shifting of the center of gravity of the robot, so that the meal delivery robot is prevented from tilting, and accordingly the safety of the meal delivery robot is guaranteed.

The present invention discloses a voltage and current double closed loop control method and device of an adjustable invertor inertial effect. In the frame of the routine voltage and current double closed loop control, the inertial current component is added in an inverter current inner ring instruction to realize the equivalent control of the inverter inertia property and is indirectly generated through an inertial control system connected in parallel on the voltage outer ring. The inertial control system is formed by three parts connected in series, wherein the three parts include a low pass filter, a proportional controller and a differential arithmetical unit. The size of the inertial current component and the intensity level of the grid-connected inverter inertial effect can be flexibly controlled through the proportional controller in the inertial control system. The voltage and current double closed loop control method of the adjustable invertor inertial effect does not need to change the hardware portion of the current grid-connected inverter system, completely maintains the current basic control frame of the software portion, has good compatibility, can be applied to a double-fed wind turbine system and a photovoltaic power generation system, and has good engineering application values.

A method, system and apparatus for analyzing heat flux bifurcation within a porous medium by analyzing a convective heat transfer process within a channel partially filled with a porous medium under local thermal non-equilibrium conditions. Either the thermal dispersion effect or the inertial effect can be considered in a physical model. Exact solutions can be derived for both fluid and solid temperature distributions for three interface thermal models at a porous-fluid interface. The required conditions for validity of each interface thermal model can be obtained, and equivalence correlations between different interface thermal models can be developed. The range of validity of local thermal equilibrium condition can be established, and heat flux bifurcation within a porous medium can be established and demonstrated. Furthermore, a Nusselt number can be obtained and investigated for pertinent parameters.

The invention provides a view animation effect achieving method and device which are applied to a touch terminal. The method comprises the steps that 1, a gesture operation event of a view on the touch terminal is monitored; 2, a view animation effect parameter is obtained according to the gesture sliding offset distance of the view and the mapping relation between gesture sliding offset distances and view animation effect parameters; and 3, animation showing is conducted on the view according to the view animation effect parameter. The gesture-based elastic animation effect achieving method is proposed for meeting the animation effect requirement of products in a client, a physical inertial effect can be added in the animation effect, and therefore animations can be more vivid and more real.

A sensor for making rheological measurements takes the form of a ferromagnetic bob alternately driven through a sample fluid in opposite directions by magnetic force from two alternately driven coils. The bob's position affects the mutual inductance between the coils, so it can be inferred by sensing the signal that current flowing in one coil induces in the other, and rheological properties are determined from the relationships among the bob's motion, the coil current, and the sensor geometry. Some such measurements' accuracies are enhanced by computing bob acceleration and suppressing inertial effects thereby detected.

The invention provides a piston cylinder power machine using laser to vaporize the water directly, and relates to a power machine which uses high-temperature laser to vaporize a certain quality of water for generating steam to do work on the piston, and outputs the power through a connecting rod. The laser vaporizes a certain quality of water into steam in critical temperature, and does work on the piston. The invention is a power machine composed of integrated components, and consists of a cylinder body piston, a laser device, a cylinder cover with laser head, an automatic water intake pipe, a water collecting cap on the water supplying pipe head and a gas discharging system. The laser cylinder steam power machine is characterized in that the piston finishes doing work and the exhaust stroke as the main shaft rotates one circuit, and finishes two strokes of ascending and descending strokes under the inertial effect, and is a two-stroke laser stroke power machine.

The present invention discloses a vacuum chamber having operating pressures in the ultra-high vacuum (UHV) range (10−8 torr to 10−13 torr) and incorporating transparent windows, said windows constructed from transparent materials (preferably glass), and having low helium permeability velocity under operating and storage conditions. Embodiments may also contain surface coatings on windows to reduce helium permeation. Also disclosed herein is a method for vacuum processing said chamber by heating entire chamber and exposing the inside and outside of the chamber windows to helium free environments. Methods for final sealing said chamber are also discussed. The vacuum chamber is useful as a container for optically-cooled atoms for use in quantum information and atomic clocks and as a sensor for magnetic fields, gravitational fields, and inertial effects.

The invention relates to a circuit breaker switching-off bounce prevention device, which comprises a main shaft, locking members, cantilevers, a gear lever, tension springs and a countershaft, wherein the cantilevers are welded on the main shaft; the locking members are connected on the cantilevers; the gear lever is located under the cantilevers; one end of each tension spring is hung on the countershaft, and the other end is hung on the corresponding cantilever; and the locking members are hook-shaped locking members, a hook-shaped structure is formed in the front end of each locking member, and the shapes of the hook-shaped structures enables meet the demand that the hook-shaped structures can be hung or hooked on the gear level. Compared with the prior art, an improved design of a conventional locking member structure is provided, the end parts of the locking members are configured to be in a hook-like shape, thus the position of the mass center of each locking member mass is successfully changed, the amplitudes of downward swinging of the locking members are effectively increased by utilizing the inertial effect, and since the locking members are designed into a hook shape, the hook-shaped structures of the locking members can be hooked on the gear level during the downward swinging process of the locking members, thus the bounce of a moving contact of the circuit breaker is blocked forcibly.

The invention discloses a micron particle concentrating device with low cost and a manufacturing method of the micron particle concentrating device. The micron particle concentrating device with low cost comprises a round rod, a rubber layer, a spiral round pipe, an adapter, a Y-shaped joint, a concentrated solution outlet micropipe and a waste liquid outlet micropipe, wherein the spiral round pipe is fixedly connected with the lower edge of the rubber layer, and the spiral round pipe and the rubber layer are uniformly and spirally wound to the periphery of the round rod; the top end of the spiral round pipe is an inlet end, and the bottom end of the spiral round pipe is an outlet end; the inlet end is connected with the adapter, and the outlet end is connected with the Y-shaped joint; the Y-shaped joint adopts a structure with one inlet and two outlets, a liquid inlet, a concentrated solution outlet, a waste liquid outlet, a first conjoined contact, a second conjoined contact and a third conjoined contact are in the Y-shaped joint, the concentrated solution outlet and the waste liquid outlet are respectively communicated with the liquid inlet, and the liquid inlet is communicated with the outlet end; the concentrated solution outlet micropipe is communicated with the concentrated solution outlet; the waste liquid outlet micropipe is communicated with the waste liquid outlet. The micron particle concentrating device disclosed by the invention is simple in structure, high in flux and low in manufacturing cost, and the inertial effect of microfluid can be used for realizing the concentration of micron order biological particles.

The invention discloses a ball throwing device for tennis service practices. The ball throwing device comprises a base, wherein a swinging rod is connected onto the base through a support shaft, a track is arranged in the swinging rod, an up-and-down reciprocate driving device is connected at one end of the swinging rod, a tennis ball basket is connected onto the base through a connecting piece, an exit is arranged at the bottom of the tennis ball basket and located above the track, and a switch door plank is arranged at the lower end of the exit and connected with a driving mechanism. A plurality of tennis balls are placed in the tennis ball basket, when the other end of the swinging rod moves downwards, the switch door plank is rotated to open the exit and the tennis balls fall to the track of the swinging rod, and when the other end of the swinging rod is stopped or reversed after being reversed and moved upwards, the tennis balls rolled to the end of the track are thrown upwards under the inertial effect. According to the ball throwing device, the swinging rod is repeatedly driven by utilizing the up-and-down reciprocate driving device, and the tennis balls are released by utilizing the tennis ball basket and the switch door plank one by one, and the tennis balls at the end of the swinging rod are thrown, so that repeatedly upward-throwing movements of the tennis balls by athletes are prevented, and the time of the athletes for actual hitting practices is increased.

The invention discloses an indirect strain rate dynamic tensile load testing method applicable to metal materials. The method comprises steps as follows: Step 1, a test piece is mounted on a high-speed hydraulic servo material tester, wherein strain gauges are pasted in corresponding positions of two sides of a non-test section at the lower part of the test piece; Step 2, a dummy gauge is mounted in the same position, where the strain gauges of the test piece are mounted, of a non-test piece, and the non-test piece and the test piece form a Wheatstone full-bridge circuit; Step 3, a dynamic tensile test is conducted on the test piece; Step 4, parameters of the strain gauges, the Wheatstone full-bridge circuit and the test piece are acquired; Step 5, strain of the non-text section at the lower part of the test piece is acquired; Step 6, the tensile load of the test piece in the dynamic tensile test process is acquired through formula calculation. The method has the advantages that the inertia effect of a static clamping fixture is eliminated and the resonant frequency of a testing system is not coupled into test data.

The present invention is directed to implanting ions in a workpiece in a serial implantation process in a manner that produces a scan pattern that resembles the size, shape and / or other dimensional aspects of the workpiece. This improves efficiency and yield as an ion beam that the workpiece is oscillated through does not significantly''overshoot'' the workpiece. The scan pattern may be slightly larger than the workpiece, however, so that inertial effects associated with changes in direction, velocity and / or acceleration of the workpiece as the workpiece reverses direction in oscillating back and forth are accounted for within a small amount of''overshoot''. This facilitates moving the workpiece through the ion beam at a relatively constant velocity which in turn facilitates substantially more uniform ion implantation.

The invention discloses a double-cylinder internal combustion engine device and belongs to the field of internal combustion engines. For the defects that the crank structure of a traditional internalcombustion engine is complex, the requirement for materials is high, the machining difficulty is high, and the inertial effect and noise are difficult to eliminate, a double-cylinder internal combustion engine using a retainer-free curved groove ball bearing motion form converting mechanism to replace a crank connecting rod mechanism is designed. Two inner rings of a retainer-free curved groove ball bearing are fixedly connected, a gear pair drives a gas distribution mechanism and an ignition (oil spraying) mechanism, thus two air cylinders and a piston do opposite reciprocating motion, and the reciprocating inertia is balanced automatically. Compared with the prior art, the double-cylinder internal combustion engine has the following advantages that the motion form is simple, only rotating motion and reciprocating motion exist, and generated noise is small; the inertia of reciprocating motion is automatically offset, and vibration is small; and the requirement for part machining is low, and manufacturing is easy.

A switch of brake light and a circuit of the brake light are installed on a motor vehicle. A tension spring and an inertial slider are assembled on the switch of brake light. When emergency braking, inertial effect makes the inertial slider overcome resistance of tension spring to push down the switch of brake light so as to turn on the brake light of the vehicle in good time. The brake light is not bright in normal driving time, and is brightened in emergency braking. Thus, emergency braking signal sends out to following motor vehicles in good time. The invention prevents accident of catching up tail of motor vehicle from happening effectively. The invention is suitable to all types of motor vehicles.

The invention discloses a three-dimensional helical structure cell sorting micro-fluidic chip and a manufacturing method of the three-dimensional helical structure cell sorting micro-fluidic chip. Themicro-fluidic chip is provided with a helical ladder-like extending three-dimensional helical micro-channel, cells arranged in disorder migrate and focus to different balance positions in the micro-channel according to the size through the inertial effect of the fluid on the microscale when an injected sample flows in the micro-channel, and the cells of different sizes are finally sorted, exported and collected through the reasonable design of a sample outlet. In addition, the micro-fluidic chip uses the helical ladder-like extending three-dimensional layout, so that the characteristic of theplanar structure of the traditional micro-fluidic chip is broken through. Multiple cell sorting channels are arranged within the same plane area, so that multiple channels work at the same time, thehandling flux of samples is increased within the unit time, and the rapid sorting and preprocessing of the large-size sample is met.

Belonging to the technical field of sewage treatment, the invention provides semi-submersible sewage treatment aeration equipment. During work, airflow firstly enters an air pipe from an external compressor, passes through a winch wheel and a guide wheel and then enters an airflow distribution block, the airflow sprayed out of the distribution block enters air valves of a main shaft, a first spray rod and a second spray rod are at a 180-degree symmetrical distribution state on a roller, and a first air valve and a second air valve on the main shaft are at a 90-degree distribution state on the main shaft, therefore when high pressure airflow flows to the first air valve and the second air valve, between the two air valves, only the submerged one can be opened, and the other one is at a closed state, during reversing, a first reversing roll encounters a first reversing rod, the roller rotates, the valve core of the first air valve is released out of an air hole, the first air valve is closed, at the moment, the roller further rotates under an inertial effect until the valve core of the second air valve enters the air hole, the second valve is opened, the airflow is sprayed out from the second spray rod, and the equipment starts reverse running.

The invention discloses an internal combustion engine based on a conversion mechanism of a motion form of double holder-free groove ball bearings and belongs to the field of internal combustion engines. In order to overcome the defects that a conventional internal combustion engine is complex in crankshaft structure, high in demand on material and high in processing difficulty and meanwhile, a complex inertial effect and noises are caused as a connecting rod is complex in stress and motion states, the invention designs an engine based on the conversion mechanism of the motion form of double holder-free groove ball bearings to replace a crank connecting rod mechanism, wherein two cycles and four reciprocating strokes are available when the conversion mechanism rotates a turn and can achievea function of reciprocating with a relative large swing by means of the conversion mechanism of the motion form of double holder-free groove ball bearings. Two extending strokes are separately used for compressing and exhausting and two returning strokes are separately used for combusting to act and performing a suction stroke. Compared with an internal combustion engine formed by a conventionalcrankshaft connecting rod, the internal combustion engine based on the conversion mechanism of the motion form of double holder-free groove ball bearings has the advantages that 1, all the moving parts are axisymmetric rotary parts, so that the internal combustion engine is simple in structure and reliable to operate; 2, the internal combustion engine is simple in motion form: a rotating motion and a reciprocating motion, and noises generated are small; and 3, the processing demands on the parts are low and the parts are easily manufactured.