JPH078118B2 - Power generation device powered by tire deformation - Google Patents

Description

Detailed Description of the Invention a. Object of the invention Industrial application field In an electric vehicle, a storage battery mounted as a power source, the consumption of electric power due to running, the deformation of the tire due to the ground pressure during running, to generate power inside the tire, The present invention relates to introducing generated electric power into a vehicle body, charging an onboard storage battery, and supplementing electric power while traveling.

The onboard storage battery is charged by various devices (not shown) such as voltage adjustment, rectification and cut-in installed inside the vehicle body.

2. Description of the Related Art The development of small, high-energy-density storage batteries for use in electric vehicles is gradually but steadily progressing. For the spread of full-fledged electric vehicles, it depends on how much distance can be charged by charging (full charge), continuously or intermittently. There is an automobile equipped with a solar collector for supplementing electric power while driving, but further progress is desired.

[Problems to be Solved by the Invention] As usable and unused power, in running condition,
Focusing on the deformation of the rolling tire due to the ground pressure, a power generator installed inside the tire that uses the deformation of the tire as a power source and the generated storage battery to charge the installed storage battery, so the power is introduced into the vehicle body while running It is intended to provide a device for doing so.

If the power generation device is moved by using the deformation of the rolling tire, the problem will be where to find the power of the tire and its method. Withstands centripetal force and centrifugal force, has a slip angle, and responds to the movement of the point of frictional force due to "torsion deformation" of the tire that is turning. Rotating permanent magnets within a tire is often difficult. Therefore, when the method of adopting the method of moving the magnetic poles in and out of the coil is adopted, the power generation efficiency decreases, the air flow in the coil, and the wheel that changes direction by steering,
The main issue is how to take out electric power and introduce it into the vehicle body so that it does not contradict each other.

B. Structure of the Invention Means for Solving the Problems FIG. 7 is a diagram showing that the ground contact portion of the tire is deformed by the ground contact pressure. Regardless of the direction in which the tire rotates, the portion other than the ground contact area including the ground contact affected area is restored to its original shape as soon as the ground contact pressure disappears. FIG. 1 is a side view of the power generator, and FIG. 2 is a plan view of the bearing 6a.
There are two N-turn winding coils 2a to 2b on both sides of ~ 6b, and the permanent magnet 3 is a modified U-shaped magnet.
b, S pole = 3a. The permanent magnet 3 may be entirely formed of ferrite, or may be formed of magnet steel, or the tip of the S pole and N pole may be formed of ferrite and connected with magnet steel.
The coils 2a-2b installed in the magnetic circuit 1 are connected in series. The permanent magnet column 13 having the movable plate 7 supported by the fixed shafts of the bearings 6a-6b as a fulcrum contains the permanent magnet 3, and the magnetic pole 3b is inserted into the coil 2b by pressing the spring 5 by pulling the pulling wire 14. . At the same time, the magnetic pole 3a escapes from the coil 2a. When the tow line 14 is slackened, the spring 5 pushes up the permanent magnet column 13, the magnetic pole 3a is inserted into the coil 2a, and the magnetic pole 3b is coiled.
Pulled out from 2b. Ferrite-formed permanent magnets are not always shock resistant. 33b and 33a are permanent magnet reinforced vault nuts. The movable plate 7 is provided with stoppers 12a to 12b, and sometimes the tire is largely deformed, the tow line 14 is excessively loosened, and the magnetic pole 3a is prevented from being excessively inserted into the coil 2a. A stopper receiving ring 11 made of an elastic material is provided.

As shown in FIGS. 5 and 6, the tow line 14 is bonded by a tow line adhering portion 15 using a similar rubber material to a portion named an inner liner 31 on the center line of the upright tire inner surface.
There are a plurality of intersecting organic fiber belts 21 in the pulling cord adhesion portion, and the ends of the pulling cords 14 are connected. The pull line 14 is an organic fiber cord or an inorganic twisted wire, and has no rigidity.

The pulling line adhesion portion 15 and the adhesion surface of the tire are adhesion surfaces having a certain range of width, and are adhered to the adhesion portion of the tire. As shown in FIG. 5, the other end of the tow line 14 is fixed to the adjusting vault nut 17, and the length of the tow line 14 can be adjusted at the time of assembly. The tire is a pressure vessel. Because of its structure,
Although the pull line 14 is not pulled too much, the stopper receiving ring 11 functions on either side. The bearings 6a-6b are in contact with the bearing fixing plate 8 and the magnetic circuit 1 is in contact with the magnetic circuit fixing plate 9 in close contact with the rim 25 of the wheel. All three layers are fixed by four anti-slip 10 welded to the rim of the wheel. To be done. The coil frame 4 has legs, and a gap corresponding to the thickness of the legs is provided between the coils 2a and 2b and the magnetic circuit 1. The protection plates 29a to 29b shown in the cross-sectional views of FIGS. 3A and 4B are attached to each power generation device by the protection plate stop nut 22, and the tire is fitted into or removed from the wheel rim. At this time, install it to prevent the device from being damaged.

The protective plates 29a-29b are not shown in FIGS. 1 and 2. The above devices are arranged at equal intervals on the inner surface of the wheel rim and on the magnetic circuit.

The coils 2a-2b are connected in series and use the lead-out terminal 32 to come out of the tire, pass through the electric wire protective cover 38 outside the wheel shown in FIG. 9, and are introduced into the slip ring 35. The lead-out terminal 32 (FIG. 14) uses the insulator 23, the washer 30 with rubber, and the tightening nut to hermetically pull the lead wire out of the rim.

As shown in FIG. 10, the slip ring 35 has a slip ring cover 37 having a bearing 39, a brush 36 and a brush case.
Holding 40. The electric wire 48 spirally extended from the brush case passes through the inner cylinder 41 and enters the vehicle body from the vehicle wheel cover 46.

The outer cylinder 42 is outside the inner cylinder, and the inner cylinder 41 is vertically movable. The outer cylinder stop 47 at the upper end of the outer cylinder 42 is fixed to the vehicle body wheel cover 46, and responds to the vertical movement of the tire, the inclination of the tire by steering, and the change in direction, and prevents the slip ring and the slip ring cover from rotating together. To do.

Action FIG. 11 is an explanatory diagram of an example in which four power generators are arranged. The power generators 50a to 50d are installed at equal intervals on the magnetic circuit 1 fixed to the rim 25 of the tire wheel, and the pull lines 14 are connected to the pull line adhering portions that are attached to the tire. Due to the ground pressure caused by tire rolling, the ground contact area will
Depress in the direction of the wheel including 24. The cord 14 is pushed up and loosens. As the rolling of the tire progresses and the deformed portion recovers its original shape, the pull line 14 loses its slack and turns into tension. The magnetic poles 3a and 3b of the power generation device move in and out of the coils 2a and 2b due to the slack and pull of the pull line 14. Generators 50b, 50
The same applies when c and 50d approach and pass over the ground. As described above (FIG. 9), the electromotive force passes from the takeout terminal 32 to the outside of the wheel 28, the inside of the electric wire protective cover 38, and the
Removed from brush 36. As for the tires, Chubres tires are used. The tow line 14 has no rigidity, has a slip angle, and adapts to the movement of the force application point of the ground contact area due to the "torsion deformation" of the tire illustrated in FIG. Further, the legs of the coil frame 4 create a gap between the magnetic circuit 1 and the leg thickness, and when the magnetic poles move in and out of the coil, the air resistance is weakened.

Of the four power generators arranged on the magnetic circuit 1, electromotive force is obtained only from the power generator corresponding to the portion of the tire deformed by the ground pressure, and the takeout terminal 32, the slip ring 35, and the brush are provided.
It is introduced into the vehicle body through the inner cylinder 41, the outer cylinder 42, and the vehicle body wheel cover 46.

At that point in time, the other three generators are
14 is still pulled and is basically in a stopped state. Basically, even if the magnetic pole of the stopped device is slightly moved due to the traveling vibration of the tire, no current flows through the coil which is not in contact with the brush via the slip ring.

The change in the direction of travel of the tire is small during traveling, and the angle becomes large when approaching a vehicle, but the movement is slow. FIG. 13 is an external view in which a slip ring, an inner cylinder, and an outer cylinder are attached to a vehicle body wheel cover and has weather resistance. The electric power generated during running is used to charge the onboard storage battery by a transformer, rectifier, cut-in device, etc. (not shown) installed in the vehicle body.

The stopper receiving ring 11 (FIG. 15) has a bottom plate with a small hole in the center, and is stopped by a stopper receiving ring stopper 19 to the extent that it does not deviate, and is not fixed to the bearing fixing plate 8. Since the stopper receiving ring stopper 19 can be rotated about its axis by an external force, the stoppers 12a and 12b are prevented from hitting a specific portion of the stopper receiving ring 11 and rubbing only at the same portion.

Example FIG. 11 shows an example in which four power generators are arranged.
It is possible to add an individual piece and an additional piece. In the case where the permanent magnet is ferrite molding or a part thereof is ferrite molding, a thin film coating is applied to part or all of the permanent magnet in order to make it resistant to impact.

Effect There is a sufficient space in the rim to secure the number of turns of the coil, and the existing permanent magnet is used. The speed of the magnetic pole that is inserted and removed is proportional to the rolling speed of the tire.

The rotation speed of the tire depends on the widely used tire and outer diameter.
Using an example with 600mm and load radius of 287mm,
Proceed 800 mm. At a speed of 60 km / h, it makes one revolution in 0.1 seconds.

Since the tire contains compressed air,
By widening the surface to be bonded to the inner liner on the inner surface of the tire to some extent, the adhesive strength is strengthened and the pulling force of the pull line 14 is also increased.

The tire is an air spring. Electromotive force is spring 5 and bearing 6a ~
A pillar 13 containing a permanent magnet with 6b as a fulcrum, a coil,
In addition, it is due to the operation mainly of the pull cord 14 by the air spring of the tire.

If the power generator is installed on the tire, the weight increase cannot be prevented. The running resistance of the automobile is the rolling resistance of the tires, the rotation resistance of the drive system, the air resistance, the gradient resistance, and the acceleration resistance. Among the acceleration resistances above, there is inertial resistance for turning the rotating body. In this case, light weight is advantageous.
We must strive to reduce the weight of power generators, including the use of new materials.

90% of the rolling resistance of the tire is due to the deformation of the tire. Of course, it is necessary to pay attention to the load, but except for special cases, try to adjust the air pressure normally so that the proper ground contact area of the tire can be obtained, the rolling resistance will be reduced, and the generator will be in good condition. Operate.

Radial tires have less tread deformation than bias tires. Since the degree of deformation may vary depending on the type of tire, the adjusting plate 16 shown in FIG. 1 is moved, and the adjusting vault nut 17 is used to adjust the length of the tow line 14. In addition, this makes it possible to change the distance to the coil of the magnetic pole with respect to the pulling distance of the pull line 14. This work is performed at the time of assembly depending on the type of tire used.

Except for the permanent magnet 3, the permanent magnet reinforcing vault nuts 33a and 33b, the magnetic circuit 1, and the like, efforts are made to select materials that are light and non-ferromagnetic.

Since the number of power generators to be arranged can be increased to 6, 8, power can be obtained with a waveform close to an AC sine wave, and a power generation method that reduces the load on the drive system as much as possible
Even considering the above-mentioned loss, it is still effective.

[Brief description of drawings]

FIG. 1 is a side view of the power generator, FIG. 2 is a plan view, FIG. 3 is an AA sectional view, FIG. 4 is a BB sectional view, and FIG. FIG. 6 is a connection diagram of the rope and the permanent magnet support, FIG. 6 is a connection diagram of the tow adhesion portion, the tow rope, and the adjusting vault nut. FIG. 7 is a deformation explanatory view of the tire due to the ground pressure. FIG. 8 is an explanatory view of the force applied to the tire when the slip angle occurs,
FIG. 9 is a diagram showing the relationship between the slip ring, the slip ring cover and the electric wire, and FIG. 10 is a crushed diagram of the introduction device from the slip ring to the vehicle body. FIG. 11 is an explanatory view of the arrangement of the device, FIG. 12 is an enlarged view of the outer cylinder stopper of the device to be introduced into the vehicle body, FIG. 13 is an external view with the introducing device attached, and FIG. 14 is a crushed view of the takeout terminal, Figure 15 is a crushed view of the stopper ring. 1. Magnetic circuit, 2a.2b.N winding coil 3.3a.3b. Permanent magnet, 4. Coil frame 5. Spring, 6a.6b. Bearing 7. Movable plate, 8. Bearing fixing plate 9. Magnetic circuit fixing plate , 10. Anti-slip 11. Stopper receiving ring, 12a.12b. Stopper 13. Permanent magnet support, 14. Pulling line 15. Pulling line adhesive, 16. Adjusting plate 17. Adjusting vault nut 19. Stopper receiving ring stop 21. Organic fiber band, 22. Protective plate stop nut 23. Insulator, 24. Ground affected area 25. Wheel rim, 26. Tire bead part 27. Tire tread, 28. Wheel 29a.29b. Protective plate, 30. With rubber Washer 31. Inner liner, 32. Extraction terminal 33a. 33b. Permanent magnet reinforced vault nut 35. Slip ring, 36. Brush 37. Slip ring cover 38. Electric wire protection cover, 39. Bearing 40. Brush case, 41. Inner cylinder 42. Outer cylinder, 46. Body wheel cover 47. Outer cylinder stop, 48. Electric wire 50a.50b.50c.50d. Power generator, 51. Road surface

Claims (2)

[Claims] 1. In an electric vehicle, deformation of a tire caused by running is fixed to a bearing on a magnetic circuit, which is provided at the bottom of the inner surface of the rim of a wheel by using a pull line attached to an inner liner of the inner surface of the tire. It has a bearing on the plate and transmits it to a permanent magnet column having a permanent magnet inside, and the tension between the permanent magnet column and the bearing fixing plate causes the spring between the permanent magnet column and the bearing fixing plate to expand and contract by the pulling and slack of the pulling line, and the movable plate as a fulcrum. A plurality of power generators, each of which has a magnetic pole of which is moved in and out of a corresponding coil provided on a magnetic circuit at the same time, are arranged, and an electromotive force is hermetically communicated to the outside of the rim from an extraction terminal. A power generator that has a circuit introduced into a slip ring provided in the outer center part and that uses the deformation of a pneumatic tire due to ground pressure as a power source. 2. A slip ring is provided with a cover, and an inner cylinder having an electric wire inside which is connected to a brush of the slip ring cover, and the inner cylinder is linked to cope with the traveling direction of the tire, the inclination of the tire, and the vertical movement. A first cylinder having an outer cylinder and an outer cylinder stopper.
A device for introducing electric power from the power generation device according to the item 1 into a vehicle body while traveling.