CN102352905A - Shock Absorber Using Suspension Magnet to Improve Power Generation Efficiency in Shock Absorbing Working State - Google Patents

Abstract

The invention relates to a shock absorber capable of improving the generating efficiency by using a suspension magnet in a shock absorption working state, belonging to a shock absorber which not only has damping comfort but also can recover consumed mechanical energy into electric energy in a high proportion. At least one suspension permanent magnet is arranged in the shock absorber tube, the suspension permanent magnet is opposite to the positioning permanent magnet and the magnetic pole of the piston permanent magnet, and the magnetic poles of the suspension permanent magnets are opposite; at least one power generation coil is arranged in an interlayer space of the non-magnetic material inner pipe and the rigid bearing pipe on the outer layer of the pipe body; the magnetic pole surface of the suspension permanent magnet is provided with a closed loop coil which generates damping action, and the annular surface of each turn of coil of the generating coil and the closed loop coil is vertical to the central line of the tube body. The advantages are that: the shock absorber has simple structure, small cross section and light weight, and can recover the high proportion of mechanical energy into electric energy and has damping property.

Description

Shock Absorber Using Suspension Magnet to Improve Power Generation Efficiency in Shock Absorbing Working State

technical field

The present invention belongs to the shock absorber which can partially recycle the consumed mechanical energy into electric energy when the shock absorber is working in reciprocating motion, especially the shock absorber which not only has damping comfort but also can recover the consumed mechanical energy into electric energy in a high proportion device.

Background technique

Now use the magnetic force of the magnet as the elastic force of the shock absorber. A fixed magnet is fixed at the bottom of the shock absorber, and a moving magnet that moves synchronously with the piston is fixed on the piston. The magnetic poles of these two strong magnets are the same. The relative repulsion force of the magnetic poles acts as the elastic force of the shock absorber. Because the magnetic force of the permanent magnet is generally small, just increase the volume of the stationary magnet and the moving magnet, and increase the area of the opposing surfaces of these two magnets to meet the elastic force required by the shock absorber. Its shortcoming is that the weight of the shock absorber is too large, the cross-section of the shock absorber is also too large, consumes a lot of materials, has high cost and lacks practicability. If a group of NdFeB magnets with a diameter of 3.0 cm are used as the elastic part of the shock absorber of an electric bicycle, the stroke of the shock absorber is only 2.0-3.0 cm; if a group of ferrite magnets with a diameter of 10.0 cm are used as The elastic part of the shock absorber of electric bicycle, the stroke of shock absorber also only has 2.0-4.0 centimetre, not only volume is big, and weight is big, and cost is high, and stroke is also too short, does not have the flexibility of damping.

In order to overcome the lack of magnetic force of permanent magnets, some people use electromagnets as elastic parts of shock absorbers to increase the magnetic force. The shock absorption effect of the shock absorber changes with the electric energy of the battery, that is, the shock absorption effect of the shock absorber is unstable. In order to prevent the battery from failing to supply power, an additional spring is required as a spare part. This shock absorber has a complex structure and poor stability.

Contents of the invention

The purpose of the present invention is to provide a simple structure, small cross-section, light weight, use the repulsive force between two permanent magnets and magnetic poles as elastic force, and can consume a high proportion of mechanical energy when the shock absorber is working in reciprocating motion. It is recovered into electric energy and has a damping shock absorber.

Structure of the present invention is:

A shock absorber that can improve power generation efficiency by using a suspension magnet in the shock absorbing working state, including a tube body 1, a positioning permanent magnet 2 is fixed in one end of the tube body 1, and a movable piston 3 is arranged in the other end of the tube body 1, and the piston 3 The side adjacent to the positioning permanent magnet 2 is fixed with a piston permanent magnet 4, which is characterized in that: the tube body 1 is divided into inner and outer layers, the inner layer is a non-magnetic material inner tube 5, and the outer layer is a steel load-bearing tube 6; In the non-magnetic material inner tube 5 between the positioning permanent magnet 2 and the piston permanent magnet 4, at least one suspension permanent magnet 8 that is not in contact with the positioning permanent magnet 2 and the piston permanent magnet 4 is provided. The adjacent surface of magnet 2 is opposite to the same magnetic pole, the adjacent surface of suspended permanent magnet 8 and piston permanent magnet 4 is opposite to the same magnetic pole, and the adjacent surface between adjacent different suspended permanent magnets 8 is opposite to the same magnetic pole; The thickness of the magnet 8 along the longitudinal direction of the tube body 1 reaches at least the required thickness of the suspension permanent magnet 8 in the non-magnetic material that the tube 5 cannot turn over;

At least one generating coil 10 is provided in the interlayer space 11 of the inner tube 5 of non-magnetic material of the tube body 1 and the outer layer is a steel load-bearing tube 6, and the generating coil 10 is located between the positioning permanent magnet 2 and the piston permanent magnet 4 in the no-load state. In the interlayer space 11 of the intersection; a generator coil 10 is only wound in one direction, and the annular surface of each coil of the generator coil 10 is perpendicular to the center line of the pipe body 1;

One or two magnetic pole surfaces of the suspended permanent magnet 8 are provided with a closed loop coil 9, and the closed loop coil 9 on one magnetic pole surface of the suspended permanent magnet 8 is only for one winding direction, that is, only for clockwise winding or only for the reverse direction. Winding in the clockwise direction; the annular surface of each turn of the closed and loop coil 9 is perpendicular to the central line of the tube body 1 .

If the positioning permanent magnet 2, the piston permanent magnet 4 and the suspension permanent magnet 8 are the same quality and the same size, as there is a suspension permanent magnet 8 between the positioning permanent magnet 2 and the piston permanent magnet 4, then there are two magnet intervals, The shock absorber with the suspended permanent magnet is equivalent to the bearing capacity and stroke length of two non-suspended permanent magnet shock absorbers with only the positioning permanent magnet 2 and the piston permanent magnet 4 . If the bearing capacity is constant, the cross-sectional area of each magnet of the shock absorber with suspended permanent magnets is almost only half of the cross-sectional area of each magnet of the shock absorber without suspended permanent magnets. Therefore, under the condition of bearing weight, the shock absorber with suspended magnet can greatly reduce the cross section of the permanent magnet, increase the stroke, and make the shock absorber small.

For the positioning permanent magnet 2, the piston permanent magnet 4 and the levitating permanent magnet 8, the magnetic poles of any adjacent or opposing surfaces of any adjacent magnets have the same polarity, that is, south poles to south poles, and north poles to north poles. The repulsive force generated by the same polarity of the magnetic poles on the opposite surfaces is used as the elastic force of the shock absorber, and is also the force that enables the suspended permanent magnet 8 to levitate.

The inner tube of the shock absorber that is in direct contact with the magnet is made of non-magnetic material, so that when the piston permanent magnet 4 and the suspension permanent magnet 8 reciprocate in the non-magnetic material inner tube 5, there is no magnetic attraction between them and the inner tube, which does not affect the reciprocating motion. Sensitivity, especially the friction between the magnet and the inner tube can be very low, increasing the durability of the shock absorber.

No matter what shape the suspended permanent magnet 8 is, it cannot be reversed in the non-magnetic material inner tube 5, otherwise the suspended permanent magnet 8 cannot maintain the same magnetic pole as the adjacent surface of the adjacent magnet. In order to prevent the suspension permanent magnet 8 from turning over in the non-magnetic material inner tube 5, the suspension permanent magnet 8 cannot be a thin sheet, but should have a certain thickness, and the thickness along the non-magnetic material inner tube 5 central axis will reach such that the suspension permanent magnet 8 cannot degree of flipping. Generally, the thickness of the suspended permanent magnet 8 should be greater than 1/6 of the maximum width of the inner tube 5 made of non-magnetic material.

The principle that part of the mechanical energy consumed by the shock absorber can be recovered into electrical energy when the shock absorber is working in reciprocating motion is: when the piston permanent magnet 4 and the suspension permanent magnet 8 reciprocate in the non-magnetic material inner tube 5, the cross section of the movement stroke interval The power generation coil 10 in the range generates the magnetic force lines that cut the piston permanent magnet 4 or the suspension permanent magnet 8 to generate an induced electromotive force or an induced voltage, that is, a power generation effect. Preferably there are a plurality of generating coils 10, and the maximum length a of each generating coil 10 in the non-magnetic material inner tube 5 outer wall is preferably no more than the average shortest stroke of the piston 3 in the working state, so that when the piston 3 is in the general working state, Each piston permanent magnet 4 and suspension permanent magnet 8 respectively enable at least one generator coil 10 to completely cut the magnetic field lines of one magnet.

The function of closed and loop coil 9 automatically adjusting the damping property is realized in this way: because the annular surface of closed and loop coil 9 every turn coil is perpendicular to pipe body 1 centerline, the same closed and loop coil 9 every turn closes and loop coil 9 The lines of magnetic field that get the induced current are all in the same direction. When the shock absorber piston 3 is pressed to the bottom direction of the shock absorber, the suspended permanent magnet 8 is also pressed to move to the bottom direction, and the magnetic flux of the closed loop coil 9 fixed on the piston permanent magnet 4 and a certain magnetic pole of the suspended permanent magnet 8 Changes occur, so that an induced current is generated in the closed loop coil 9, and the magnetic force of the magnetic field generated by the induced current always hinders the movement of the piston permanent magnet 4 and the suspension permanent magnet 8, that is, produces a damping effect. That is to say, when the shock absorber piston 3 is pressed to the bottom direction, the closed and loop coil 9 automatically produces a damping magnetic force that prevents the piston 3 from being pressed to the bottom direction, and the faster the piston 3 is pressed to the bottom direction, the closed And the induced current that loop coil 9 produces is also bigger, and the damping magnetic force that automatically produces is bigger. When the shock absorber piston 3 bounces back away from the bottom direction, the closed and loop coil 9 generates a reverse current again, and the magnetic force generated by the reverse current hinders the rebound of the shock absorber piston 3, so that the return speed of the piston 3 is slowed down, and the closing And the magnetic force produced by the loop coil 9 has the effect of damping the quick return of the piston 3. Therefore, the closed loop coil 9 always produces a magnetic force opposite to the movement direction of the piston 3 to prevent the movement of the piston 3, and the faster the movement of the piston 3, the stronger the damping magnetic force, which can make the reciprocating movement of the piston 3 more flexible and stable. To reduce vibration, this kind of shock absorber is used for vehicle shock absorption to make the passengers more comfortable.

The reason why closed and loop coil 9 all produces damping effect to reciprocating piston 3 is illustrated with physics below: Faraday's law---electromagnetic induction produces the size of induced electromotive force, and the magnetic flux change rate of interlinkage is proportional. That is, E=- nΔΦ/Δt. In the formula, n is the number of turns of the induction coil. When the magnetic flux changes Δ ф within Δt time, the generated electromotive force is e. The meaning of the negative sign "-" in the formula is the direction of the electromotive force generated by the coil when the interlinked magnetic flux changes. Always in the direction that hinders the change of magnetic flux. And when the interlinked magnetic flux increases or decreases, the direction of the generated electromotive force is opposite. Therefore, the electromotive force generated by the closed loop coil 9 in the present invention always hinders the movement of the piston 3, that is, produces a damping effect.

The significance of the damping effect of the closed loop coil 9 is: for a vehicle with a damping shock absorber, the comfort of people riding in the vehicle is better. Moreover, the number of turns of the closed and loop coil 9 can adjust the damping coefficient, and the adjustment of the damping coefficient by changing the number of turns of the coil can make the shock absorber and the damping required by comfort, and can make the generating coil 10 produce the most electric energy. output. For this reason, the number of turns of the closed and loop coil 9 at different positions may be different, that is, the closed and loop coil 9 at different positions has different damping coefficients. Generally, it should be: the number of turns of the closed loop coil 9 close to the direction of the piston 3 is less, and the damping coefficient is relatively small, so that the initial movement speed of the piston 3 to the direction of the positioning permanent magnet 2 is fast, and the mechanical energy of the piston 3 is converted as much as possible. is the electric energy in the generating coil 10; the number of turns of the closed loop coil 9 far away from the piston 3 direction is large, and the damping coefficient is relatively large, so that the moving speed of the piston 3 is slower when it is closer to the positioning permanent magnet 2, and finally stops downward Movement, thereby limiting the maximum stroke of the piston 3.

The adjacent magnetic pole faces of the piston permanent magnet 4 and the suspended permanent magnet 8 are provided with a closed sum loop coil 9, or the adjacent magnetic pole faces of the positioning permanent magnet 2 and the suspended permanent magnet 8 are provided with a closed sum loop coil 9; a closed sum loop coil 9 is only for one winding direction, that is, only for clockwise winding or only for counterclockwise winding; the annular surface of each turn of the closed loop coil 9 is perpendicular to the central line of the pipe body 1. To the suspension permanent magnet 8 magnetic pole faces of the piston permanent magnet 4 or the positioning permanent magnet 2, the closing and loop coil 9 can be set, because the annular surface of the closing and loop coil 9 every turn of the coil is perpendicular to the centerline of the tube body 1, so that each turn The closed and loop coils 9 obtain the magnetic field lines of the induced currents in the same direction. Then the principle of the closed sum loop coil 9 producing the damping effect on the piston 3 is the same as that of the closed sum loop coil 9 on the above-mentioned suspended permanent magnet 8 producing the damping action.

The magnetic pole surface of the suspended permanent magnet 8 with closed and loop coil 9 is an inward concave structure, or the magnetic pole surface of the piston permanent magnet 4 with closed and loop coil 9 is an inward concave structure, or is provided with a closed and loop coil 9 The magnetic pole surface of the positioning permanent magnet 2 is an inward concave structure; the closed and loop coil 9 is embedded in the depression; the closed and loop coil 9 is only wound in one direction, that is, only clockwise or only anticlockwise; The annular surface of each turn of the loop coil 9 is perpendicular to the central line of the pipe body 1 .

It is preferable that each permanent magnet magnetic pole surface provided with the closed loop coil 9 is a concave structure, and the closed loop coil 9 is all arranged in the concave structure. Establishing closed and loop coil 9 in the recessed structure can prevent closed and loop coil 9 from contacting with non-magnetic material inner tube 5, and protect closed and loop coil 9, while using wear-resistant suspension permanent magnet 8 and piston permanent magnet 4 to contact nonmagnetic The material is in contact with the inner tube 5. Can avoid closed and loop coil 9 to contact with tube 5 in the non-magnetic material like this, protect closed and loop coil 9, and contact with tube 5 in the suspension permanent magnet 8 of wear resistance and piston permanent magnet 4 and non-magnetic material, improve reducing The mechanical properties of the shock enhance the durability.

In the interlayer space 11 of the non-magnetic material inner tube 5 and the outer layer of the steel load-bearing tube 6 of the tube body 1, a plurality of generating coils 10 are arranged, and each generating coil 10 has a length along the central axis direction of the non-magnetic material inner tube 5 a is 1/8 to 1/15, or 1/10 to 1/25, or 1/20 to 1/35, or 1/30 to the length A between the no-load state positioning permanent magnet 2 and the piston permanent magnet 4 1/50.

According to actual calculations, the length a of the generating coil 10 of the electric bicycle shock absorber for 1-2 people is 1/8 to 1/15 of the length A between the positioning permanent magnet 2 and the piston permanent magnet 4 in the no-load state; 1-2 people The length a of the generator coil 10 of the battery car shock absorber is 1/10 to 1/25 of the length A between the permanent magnet 2 and the piston permanent magnet 4 in the no-load state; the length a of the generator coil 10 of the car shock absorber is no-load 1/20 to 1/35 of the length A between the state positioning permanent magnet 2 and the piston permanent magnet 4; 1/30 to 1/50 of length A.

The two output ends of each generating coil 10 are respectively connected to a bridge rectifier. When the shock absorber is in the working state, the piston permanent magnet 4 and the suspension permanent magnet 8 are all reciprocating, and the positive and negative poles of the induced voltage generated by the generating coil 10 are also reciprocatingly reversed, and the generated voltage generated by the generating coil 10 is The electricity is alternating current. In order to combine the electricity generated by each generating coil 10 of a shock absorber into one electric energy output, the alternating current generated by each generating coil 10 should be bridge rectified first, and then the DC rectified by each bridge rectified Parallel connection or series connection form a power output with large energy, which makes the energy recovery of the shock absorber more practical.

The end of the pipe body 1 that is put into the piston 3 is fixed with a ring type permanent magnet 7, and the ring type permanent magnet 7 is opposite to the same magnetic pole of the piston permanent magnet 4; the piston 3 passes through the hole in the ring type permanent magnet 7, and the piston 3 is in the Can slide in the hole of magnetic material inner tube 5 and ring type permanent magnet 7.

The ring type permanent magnet 7 and the piston permanent magnet 4 are opposite with the magnetic poles, so that when the piston 3 bounces back to the final position, the magnetic flexibility prevents the piston 3 from ejecting the non-magnetic material inner tube 5. In the process of making the piston 3 rebound and reset, people feel more comfortable.

The inner tube 5 of non-magnetic material is a tube of copper material, or tube of aluminum material, or tube of non-magnetic stainless steel, or tube of engineering plastic material. Non-magnetic stainless steel is the most preferred material.

The positioning permanent magnet 2, the piston permanent magnet 4 and the ring permanent magnet 7 are neodymium iron boron NdFeB magnets, which are permanent magnets with a magnetic energy product of at least 318B·Hmax/KJ·m ^-3 . This is a technically feasible and economical magnet material for shock absorbers.

In the non-magnetic material inner tube 5 between the positioning permanent magnet 2 and the piston permanent magnet 4, 2-3 or 4-6 or 6-8 are not in contact with the positioning permanent magnet 2 and the piston permanent magnet 4 The suspended permanent magnets 8; the same magnetic poles between different suspended permanent magnets 8 are opposite.

If the permanent magnet whose magnetic energy product is at least 318B·Hmax/KJ·m ^-3 is used, the shock absorber of non-motorcycles such as battery cars and motorcycles with a load of 1-2 people is made, and the non-magnetic material inner tube 5 of the shock absorber With 2-3 suspended permanent magnets 8, the external dimension of the shock absorber can be small enough to be beautiful and practical, and the cost is low. To make a shock absorber for a car carrying 4-6 people, the non-magnetic material inner tube 5 of the shock absorber is provided with 4-6 suspended permanent magnets 8, which can make the overall size of the shock absorber small enough to be easy to install and meet the requirements of the machine. Intensity, etc., and low cost and practical requirements. To make shock absorbers for general freight trucks, the inner tube 5 of non-magnetic material of the shock absorber is provided with 6-8 suspended permanent magnets 8, which can make the external dimensions of the shock absorber small enough to be easy to install and meet the requirements of mechanical strength, etc. , and lower cost and practical requirements.

The upper or lower position of the permanent magnet of the present invention is: the shock absorber piston permanent magnet 4 is placed on the top, and the positioning permanent magnet 2 is placed below the state of this general vehicle using the shock absorber. Up or down positional relationship.

The initial velocity of the permanent magnet in the present invention refers to the initial velocity when the piston 3 changes its motion acceleration at any position. In practice, the initial velocity is mainly the compression initial velocity at which the piston 3 starts to move toward the positioning permanent magnet 2 at any position, and the rebound initial velocity at which it begins to move away from the positioning permanent magnet 2 .

The advantages of the present invention: the structure of the shock absorber of the present invention is simple, the sliding surface structure of the sliding member piston permanent magnet and the suspension permanent magnet respectively and the non-magnetic material inner tube has low requirements on the manufacturing process, low processing cost, and the sliding surface is durable Significantly higher than hydraulic shock absorbers. Stable shock absorbing elastic force and stable shock absorbing curve. Except for pressure, there are no other factors affecting the elastic force and shock curve of the shock absorber, and the working state is not affected by external factors such as electricity. Under the condition of the same load, the cross-section is less than the shock absorber with electromagnet, and also less than the spring shock absorber; the circular permanent magnet diameter of the shock absorber of the present invention is only 0.8 centimeters, and the external diameter of the pipe is only 1.5 centimeters. It can be used as a shock absorber for two-person motorcycles, and the external diameter of the hydraulic shock absorber tube for two-person motorcycles is at least 3.0 cm, which consumes more steel. Because there is no precise structure and the structure is simple, it is not easy to damage and is durable, and it is also very convenient to maintain; but the structure of the hydraulic shock absorber is complex, and it is easy to leak oil and difficult to maintain; the spring shock absorber is also complex in structure and difficult to maintain. The weight of a shock absorber of the present invention that is used for two-person motorcycle is only 0.2 kilograms, and the weight of a hydraulic shock absorber for two-person motorcycle is 1.5 kilograms, and the weight of spring shock absorber is 1.5 kilograms, it can be seen that The shock absorber of the present invention is significantly lighter.

When a vehicle is running on an uneven road, a large amount of energy is used to overcome the uneven road resistance. Practice has proved that the more uneven the road, the more the lossy fuel consumption of the car traveling the same distance. Most of this lossy fuel consumption is used for shock absorber work, and existing shock absorber work is to become heat energy consumption. The work of the shock absorber of the present invention is converted into electric energy, and is available electric energy, which is especially suitable for electric vehicles that are gradually emerging to recover the work energy of the shock absorber and turn it into electric energy to drive the vehicle. The more uneven the road is, the more advantageous the vehicle with the shock absorber of the present invention is, that is to say, the electric vehicle charged with the same amount of electricity can travel a farther distance and overcome the problem that the electric energy carried by the electric vehicle is limited. This is of great significance for the popularization and utilization of electric vehicles.

The closed and loop coil that produces damping effect is to make full use of the existing structure of the shock absorber, so that the shock absorber reduces the vibration and the working curve is more stable, and is used for vehicle shock absorption to make the passengers more comfortable. And the damping effect can be realized by adjusting the number of turns of the closed and loop coil, so as to make the passengers most comfortable.

The shock absorber of the present invention is more advanced in that it can make full use of the shock absorber housing and permanent magnets, and can recover more mechanical energy of the shock absorber into electrical energy for utilization, thereby improving the efficiency of converting mechanical energy into electrical energy. It is theoretically estimated that the closed and loop coils can recover 25% more energy than those without, and the actual measurement is carried out with an electric bicycle. With the shock absorber of the present invention, the efficiency of converting the mechanical energy of the piston movement into electric energy can reach 75%. The commercial value and environmental value are of great significance.

Description of drawings

Fig. 1 is a schematic diagram of the main structure of the present invention;

In the figure, 1 is the tube body, 2 is the positioning permanent magnet, 3 is the piston, the piston permanent magnet, 5 is the inner tube of non-magnetic material, 6 is the steel load-bearing tube, 7 is the ring permanent magnet, 8 is the suspension permanent magnet, 9 is the Closed and loop coil, 10 is the generator coil, 11 is the interlayer space.

Detailed ways

Embodiment 1, the shock absorber that can improve the power generation efficiency with the levitation magnet in the shock absorbing working state

As shown in Figure 1, the inner layer uses a non-magnetic stainless steel tube with an inner diameter of 1.0 cm as the non-magnetic material inner tube 5, and a steel tube mainly used to bear the weight is used as the steel load-bearing tube 6 on the outside, and the two tubes that are nested inside and outside are used as the inner tube. The pipe body 1 of the shock absorber. The positioning permanent magnet 2 installed on one end of the tube body 1 and the steel load-bearing tube 6 are fixed and cannot move, and the south pole of the magnetic pole of the positioning permanent magnet 2 faces into the tube body 1; one end of the piston rod is fixed with a piston permanent magnet 4, the piston rod and the piston permanent magnet 4 constitute the piston 3, the piston 3 has a piston permanent magnet 4 and one end is placed in the non-magnetic material inner tube 5 of the tube body 1, the north pole of the piston permanent magnet 4 magnetic pole is fixed to the piston rod, the south pole is opposite to the positioning permanent magnet 2, and the piston rod A part is located outside the inner tube 5 of non-magnetic material.

Take out the piston 3 from the inner tube 5 of the non-magnetic material, and put two cylindrical suspended permanent magnets 8 with an outer diameter of 0.9 cm and a thickness of 1.0 cm in the inner tube 5 of the non-magnetic material. The magnetic material inner tube 5 is put into the first suspended permanent magnet 8, and the magnet south pole of the first suspended permanent magnet 8 is put into the form of positioning the permanent magnet 2 south pole direction; Put it into the inner tube 5 of non-magnetic material in the form of the north pole direction of the first suspended permanent magnet 8, so that the magnet south pole of the second suspended permanent magnet 8 faces the south pole of the piston permanent magnet 4; finally put the piston 3 into the non-magnetic material In the inner tube 5, the south pole of the magnetic pole of the piston permanent magnet 4 is opposite to the magnet south pole of the second suspension permanent magnet 8. The adjacent permanent magnets of the four permanent magnets in the tube body 1 are all of the same magnet polarity, and the adjacent permanent magnets are in a state that they repel each other and cannot fit together, so that the first suspended permanent magnet 8 And the second suspended permanent magnet 8 is suspended in the tube inner space of the non-magnetic material inner tube 5 between the positioning permanent magnet 2 and the piston permanent magnet 4 .

In order to make the shock absorber have the function of generating electricity, 20 non-connected and non-conductive The generating coil 10, a generating coil 10 is only one winding direction, and the annular surface of each turn coil of the generating coil 10 is perpendicular to the center line of the pipe body 1; The small hole is pierced for the output of electrical energy. These 20 generating coils 10 are located in the interlayer space 11 of the section between the positioning permanent magnet 2 and the piston permanent magnet 4 in the no-load state. These 20 generating coils 10 are wound around the outer wall of the non-magnetic material inner tube 5 and arranged in series. They do not overlap with each other, and there is no interval between adjacent generating coils 10, so that the permanent magnet moving in the inner tube 5 of non-magnetic material can generate generating effect at any position.

The two output ends of each generating coil 10 are respectively connected to a bridge rectifier. Then, the positive poles of the rectified output of each generator coil 10 are combined and connected, and the negative poles of the rectified output of each generator coil 10 are also combined and connected. During the damping movement, the 20 alternating currents obtained by the 20 generating coils 10 are converted into a direct current output, which is convenient for utilizing the electric energy.

In order to make the shock absorber not only be able to convert mechanical kinetic energy into electric energy, but also have damping properties, a closed and loop coil 9 is arranged on the magnetic pole surface of the permanent magnet, and the closed and loop coil 9 is bonded to the magnetic pole surface of the permanent magnet with epoxy resin. The maximum outer diameter of the closed loop coil 9 is 0.2 cm smaller than that of the permanent magnet, and the maximum thickness of the closed loop coil 9 is thinner than that of the permanent magnet. The closed and loop coil 9 on a magnetic pole surface is only for one winding direction, that is, only clockwise or only anticlockwise; The winding direction of the closed and loop coil 9 is:

The piston is the south pole, the coil is below, and the closed and loop coil 9 on the south pole surface of the piston permanent magnet 4 and the first suspended permanent magnet 8 winds clockwise;

The piston is the south pole, and the coil is below, and the closed loop coil 9 on the north face of the second suspended permanent magnet 8 winds counterclockwise.

The positioning permanent magnet 2, the piston permanent magnet 4 and the ring permanent magnet 7 are neodymium iron boron NdFeB magnets, which are permanent magnets with a magnetic energy product of at least 318B·Hmax/KJ·m ^-3 .

The size of the shock absorber and the number of suspended permanent magnets 8 in this embodiment are suitable as shock absorbers for motorcycles.

Embodiment 2, the piston permanent magnet is that the south pole faces the positioning permanent magnet, and both sides of the suspension permanent magnet have closed and loop coils, and the suspension magnet can improve the shock absorber of the power generation efficiency in the shock absorbing working state.

On the basis of Embodiment 1, the piston 3 , the first suspended permanent magnet 8 and the second suspended permanent magnet 8 are taken out from the inner tube 5 made of non-magnetic material. The magnetic poles in the upper direction of the first suspended permanent magnet 8 and the second suspended permanent magnet 8 are also bonded with closed and loop coils 9 .

The magnet north face of the first suspended permanent magnet 8 is bonded with a closed and loop coil 9 , and the winding direction of the closed and loop coil 9 is clockwise winding as viewed from the side of the closed and loop coil 9 . A closed and loop coil 9 is bonded to the magnet south pole surface of the second suspended permanent magnet 8 , and the winding direction of the closed and loop coil 9 is counterclockwise winding as viewed from the side of the closed and loop coil 9 . Right now

The piston is the south pole, the coil is on the top, and the closed and loop coil 9 on the north side of the first suspended permanent magnet 8 winds counterclockwise;

The piston is the south pole, the coil is on the top, and the closed and loop coil 9 on the south pole surface of the second suspended permanent magnet 8 winds clockwise;

The two magnet faces of the first suspended permanent magnet 8 and the second suspended permanent magnet 8 respectively have closed and loop coils 9 capable of producing acceleration. Then, that side of the first suspension permanent magnet 8 south poles with closed and loop coil 9 is packed into the non-magnetic material inner tube 5 toward the positioning permanent magnet 2, and then the second suspended permanent magnet 8 is closed with loop coil 9 That side of the north pole is packed in the nonmagnetic material inner tube 5 towards the north pole of the first suspension permanent magnet 8, and finally the piston permanent magnet 4 with the closed and loop coil 9 is packed in the nonmagnetic material inner tube 5 on the south pole surface.

Embodiment 3: The closed and loop coil will not rub against the inner tube of non-magnetic material. The suspension magnet can improve the power generation efficiency in the shock absorbing working state.

On the basis of embodiment 1, the south pole face of the 4 magnetic poles of the piston permanent magnet, the south pole face of the 8 magnetic poles of the first suspended permanent magnet, and the north pole surface of the magnetic pole of the second suspended permanent magnet 8 are made inwardly recessed by 0.4 cm Structure.

Closed and loop coil 9 is not used the kind of coil of embodiment 1, but uses the double-layer plate that copper film layer is arranged on the insulating substrate instead, copper film layer is corroded into the closed loop coil single that has multiple concentric rings on the same plane layer winding. In the 0.4 cm concave structure of each permanent magnet, multiple single-layer windings of closed loop coils are laminated and fixed in the concave structure, and multiple single-layer windings in one concave structure are laminated and bonded into a closed loop coil 9 . The three closed sum loop coils 9 are wound in the same direction as the three closed sum loop coils 9 in the first embodiment. Can avoid closed and loop coil 9 to contact with nonmagnetic material inner tube 5 like this, protect closed and loop coil 9, and contact with nonmagnetic material inner tube 5 with the suspension permanent magnet 8 and piston permanent magnet 4 of wear resistance.

Embodiment 4, the closed circuit coil that prevents the piston from falling out can not rub against the inner tube of non-magnetic material, and the suspension magnet can improve the power generation efficiency in the shock absorbing working state.

As embodiment 3, and put into the pipe body 1 that end of piston 3 and be fixed with the ring type permanent magnet 7 that has hole in the middle, ring type permanent magnet 7 and piston permanent magnet 4 are opposite with magnetic pole, in the present embodiment, The magnetic poles of the ring permanent magnet 7 and the piston permanent magnet 4 are opposite to the north pole, which can prevent the piston 3 from having the piston permanent magnet 4 one end to deviate from the hole of the ring permanent magnet 7; the piston rod of the piston 3 passes through the ring permanent magnet. The hole in the magnet 7, the piston 3 is slidable in the non-magnetic material inner tube 5 and the hole of the ring permanent magnet 7.

Claims (9)

1. The shock absorber that can improve the power generation efficiency by using a suspension magnet in the shock absorbing working state, including a tube body (1), a positioning permanent magnet (2) is fixed in one end of the tube body (1), and a positioning permanent magnet (2) is fixed in the other end of the tube body (1). A movable piston (3) is provided, and a piston permanent magnet (4) is fixed on the side of the piston (3) adjacent to the positioning permanent magnet (2). The feature is that: the tube body (1) is divided into two layers, The inner layer is a non-magnetic material inner tube (5), and the outer layer is a steel load-bearing tube (6); in the non-magnetic material inner tube (5) between the positioning permanent magnet (2) and the piston permanent magnet (4), At least one suspended permanent magnet (8) that is not in contact with the positioning permanent magnet (2) and the piston permanent magnet (4) is provided, and the adjacent surface of the suspended permanent magnet (8) and the positioning permanent magnet (2) are opposite to the same magnetic pole , the adjacent surfaces of the suspended permanent magnet (8) and the piston permanent magnet (4) are opposite to the same magnetic pole, and the adjacent surfaces between different adjacent suspended permanent magnets (8) are opposite to the same magnetic pole; the suspended permanent magnet (8) The thickness along the longitudinal direction of the tube body (1) reaches at least the thickness required for the suspension of the permanent magnet (8) in the non-magnetic material and the tube (5) cannot be turned over; At least one generating coil (10) is provided in the interlayer space (11) of the inner tube (5) of non-magnetic material of the tube body (1) and the outer layer is a steel load-bearing tube (6), and the generating coil (10) is located in the space. In the interlayer space (11) between the permanent magnet (2) and the piston permanent magnet (4) in the loaded state; a generator coil (10) has only one winding direction, and the ring surface of each coil of the generator coil (10) perpendicular to the center line of the pipe body (1); The suspended permanent magnet (8) is provided with a closed loop coil (9) on one or both magnetic pole surfaces, and the closed loop coil (9) on one magnetic pole surface of the suspended permanent magnet (8) is only for one winding direction, that is, only for Clockwise winding or only anticlockwise winding; the annular surface of each turn of the closed loop coil (9) is perpendicular to the central line of the pipe body (1). 2. According to claim 1, characterized in that: the adjacent magnetic pole surface of the piston permanent magnet (4) and the suspension permanent magnet (8) is provided with a closed loop coil (9), or the positioning permanent magnet (2) and The adjacent magnetic pole surface of the suspended permanent magnet (8) is provided with a closed and loop coil (9); a closed and loop coil (9) is only wound in one direction, that is, it is only wound in a clockwise direction or only in a counterclockwise direction; The annular surface of each turn of the closed loop coil (9) is perpendicular to the central line of the tube body (1). 3. According to claim 1 or 2, the shock absorber that can improve power generation efficiency by using a levitating magnet in the shock absorbing working state is characterized in that: the magnetic pole surface of the levitating permanent magnet (8) is provided with a closed loop coil (9) The magnetic pole surface of the piston permanent magnet (4) with an inward concave structure or a closed loop coil (9) is an inward concave structure or a positioning permanent magnet (2) magnetic pole surface with a closed loop coil (9) It is an inward concave structure. 4. The shock absorber that can improve power generation efficiency by using levitating magnets in the shock absorbing working state according to claim 3, characterized in that: the inner tube (5) and the outer layer of the non-magnetic material of the tube body (1) are made of steel The interlayer space (11) of the permanent load-bearing tube (6) is provided with a plurality of generating coils (10), and each generating coil (10) is positioned in an unloaded state along the length a along the central axis of the non-magnetic inner tube (5) 1/8 to 1/15 of the length A between the permanent magnet (2) and the piston permanent magnet (4), or 1/10 to 1/25, or 1/20 to 1/35, or 1/30 to 1/ 50. 5. The shock absorber capable of improving power generation efficiency by using levitation magnets in a shock absorbing working state according to claim 4, characterized in that: the two output ends of each power generation coil (10) are respectively connected to a bridge rectifier. 6. The shock absorber that can improve power generation efficiency by using levitating magnets in the shock absorbing working state according to claim 5, characterized in that: the end of the tube (1) where the piston (3) is placed is fixed with a ring-type permanent magnet (7), the ring permanent magnet (7) and the piston permanent magnet (4) are opposite to the same magnetic pole; the piston (3) passes through the hole in the ring permanent magnet (7), and the piston (3) is in the non-magnetic material inner tube (5) Slidable in the hole of inner and ring type permanent magnet (7). 7. The shock absorber that can improve power generation efficiency by using a levitating magnet in the shock absorbing working state according to claim 6, characterized in that: the non-magnetic material inner tube (5) is a copper material tube or an aluminum material tube, Or a certain kind of non-magnetic stainless steel, or engineering plastic material tube. 8. The shock absorber that can improve power generation efficiency by using levitating magnets in the shock absorbing working state according to claim 7, characterized in that: the positioning permanent magnet (2), the piston permanent magnet (4) and the ring permanent magnet (7 ) is a neodymium iron boron (NdFeB) magnet, a permanent magnet with a magnetic energy product of at least 318 (B·H)max/KJ·m ^-3 . 9. The shock absorber that can improve power generation efficiency by using a levitating magnet in the shock absorbing working state according to claim 8, characterized in that: the non-magnetic material between the positioning permanent magnet (2) and the piston permanent magnet (4) Inside the inner tube (5), there are 2-3 or 4-6 or 6-8 suspension permanent magnets (8) that are not in contact with the positioning permanent magnet (2) and the piston permanent magnet (4); The same magnetic poles between the permanent magnets (8) are opposite.

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