JPH0272233A - Shock absorber for vehicle or the like - Google Patents

Abstract

PURPOSE:To utilize electromotive force as an auxiliary power source by inserting a shaft, tightly fitted with a generator magnet, into a cylindrical case setting up a magneto coil at the bottom central part free of lifting motion, and damping it with the electromotive force generating reciprocation between the case and the shaft by vibrations. CONSTITUTION:A magneto coil 6 is set up at the center of a bottom surface in a cylindrical case 1, and a shaft 2 to which a columnar generator magnet 7 is tightly installed is inserted into the lower end free of lifting motion. A coil spring 10 is installed in the underside of an upper end plate of the case 1, restricting the upper limit with a contact plate 9 and a flange 11. A permanent magnet 8, turning the same poly as a magnetic pole (N pole) at a lower end of the generator magnet 7 to the upper end, is installed on the bottom of the case, 1 restricting the lower limit. The case 1 and the shaft 2 are connected each to both wheel and body sides of a vehicle. Vibrations in the vehicle comes to reciprocating motion between the case and the shaft, and thereby there is produced electromotive force in the magneto coil 6, serving as a buffer action on the vibration. In this connection, vibro-energy is converted into electric power, turning to auxiliary power.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shock absorber for vehicles that can be applied to light vehicles such as bicycles to vehicles such as automobiles and railway vehicles.

[Prior Art] As conventional shock absorbers, shock springs such as coil springs, plate springs, torsion bars, or air suspensions are known. Furthermore, hydraulic shock absorbers are also well known.

[Problem to be Solved by the Invention 1] As described above, in vehicles such as bicycles, automobiles, and trains, the above-mentioned shock absorbers have been developed and improved in order to improve riding comfort.

However, in any case, the above technology that is the subject of development is
Emphasis was placed on improving ride comfort by simply absorbing vibrations or shocks caused by uneven road surfaces (of course, along with this, improvements were also made to reduce the tilt of the vehicle body when starting or braking). It goes without saying that this is being done.)
, no consideration is given to the effective use of energy such as vibrations or shocks caused by the unevenness of the road surface.

The present invention aims to convert the wasted energy such as vibration or impact into electric power and utilize it effectively while also providing a buffering effect.

By the way, the generators installed in these vehicles are
Conventionally, power generation is of the rotary type, and in bicycles, power is generated by human power, and in other vehicles, power is generated by using part of the driving force of the engine that is the driving body. However, as a matter of course, it is impossible to generate electricity unless energy for driving the driving body is prepared. Alternatively, it is impossible to generate electricity unless people move their bicycles.

That is, in the present invention, without preparing a drive source that requires a special energy supply, auxiliary power is obtained by utilizing energy such as the vibration that is wasted, and at the same time, the above-mentioned power is The aim is to also obtain a buffering effect through a configuration that obtains the following.

[Means for Solving the Problems] The gist of the configuration of the present invention is as follows: A power generation coil and a power generation magnet are combined so that the former cuts the magnetic flux of the latter and makes linear reciprocating motion.

Further, a limiting means is configured to limit the relative reciprocating motion of the generating coil and the generating magnet within a certain range, and further, the generating coil and the generating magnet are connected separately to the vehicle body side and the wheel side of the vehicle. This is a shock absorbing device for vehicles that constitutes a connecting means.

As long as the relative reciprocating motion between the generator coil and the generator magnet is linear, either the former or the latter may be configured as a moving magnet. It is easier to construct the generator so that it moves back and forth.A permanent magnet is easier to use as the generator magnet.

As a specific configuration, for example, a shaft member is inserted from the upper end of a cylindrical case so as to be able to move up and down.

It is appropriate that the former be a connecting means to the wheel side and the latter be a connecting means to the vehicle body side, and each of the above elements is incorporated into these.

For example, by disposing the generating coil upright on the bottom surface of the cylindrical case and fixing the generating magnet to the lower end of the shaft member, the generating magnet can move up and down within the generating coil. do it like this. As the above-mentioned generator magnet, a cylindrical permanent magnet having magnetic poles in the vertical direction is employed.

Incidentally, the shaft member is provided with a guide member for guiding it up and down at the above-mentioned position. The guide member can have any configuration. For example, as the guide member, a bearing is disposed at the upper end of the cylindrical case and in the middle thereof to support the shaft member so as to be slidable in the vertical direction. As the bearing, a roller bearing, a ball bearing, a brane bearing, etc. are selected and adopted as necessary.

Further, as the limiting means, on the one hand, on the bottom surface of the cylindrical case, at the center position of the generating coil, an Mlti which is the same as the magnetic pole on the lower end side of the generating magnet, which is the cylindrical magnet, is placed at the upper end.
By disposing a limiting magnet having a limit magnet, disposing a limiting spring member in the upper part of the cylindrical case, and protruding a flange from the outer periphery of the shaft member, the shaft member reaches its upper limit. When the lowering limit is reached, the collar body elastically abuts against the limiting spring member, and when the lowering limit is reached, the generator magnet is repelled by the magnetic pole at the upper end of the limiting magnet to limit the range of elevation.

Incidentally, it is preferable to attach a thin sheet-like elastic material such as sponge to the upper end of the limiting magnet, as the case may be. In this way, it is possible to prepare for the case where the generator magnet and the limiting magnet may collide due to extremely strong vibrations.

[Function] Since the present invention is constructed as described above, the connecting means for the power generation coil and the power generation magnet are used by being connected to the vehicle body side and the wheel side of the vehicle, respectively.

Then, when vehicles drive on roads, etc.

Vibrations generated in the wheels due to unevenness of the road surface, etc., are first transmitted to the shock absorbing device from the coupling means. the result.

As a result of the vibration, the generating coil and the generating magnet relatively move linearly back and forth, cutting off the magnetic flux of the latter, and an electromotive force is generated in the generating coil. On the other hand, as the electromotive force is generated, a braking force is generated in the relative reciprocating motion of the generating coil and the generating magnet.

Thus, according to the present invention, the energy of vibrations caused by unevenness of the road, etc. is converted into electrical energy, which serves as an auxiliary power source for the electric power used in a vehicle, etc., and can function as a shock absorber.

Note that the relative reciprocating motion between the generating coil and the generating magnet is limited within a certain range by a limiting means.

Furthermore, since the current obtained from the generator coil is an alternating current with an inconsistent frequency, it is appropriate to rectify it using a general rectifier and charge it into a battery.

[Example] An embodiment of the present invention will be described below based on the drawings.

As shown in FIG. 1, a shaft 2 is inserted into a cylindrical case 1 from the upper end so as to be movable up and down. The cylindrical case l has a support tube 3 that supports the shaft 2 in a vertically movable manner at the center of its upper end, and a support tube 3 that supports the shaft 2 in a vertically movable manner from the bottom.
Similarly, a support tube 4 that supports the shaft 2 in a vertically movable manner is configured. The support cylinder 3 is supported by an upper end plate that closes the upper end of the cylindrical case 1, and the support cylinder 4 has arms 5.
・Supported by

At the center of the bottom surface of the cylindrical case 1, one power generating coil 6 is disposed in an upright state. On the other hand, at the lower end of the shaft 2,
A cylindrical generator magnet 7 is fixedly installed so that it can move up and down inside the generator coil 6. The generator magnet 7 was a permanent magnet having upper and lower magnetic poles, with an N pole at the lower end and an S pole at the upper end.

Further, on the bottom surface of the upper cylindrical case l, at the center of the generator coil 6, an N pole, which is the same magnetic pole as the lower end side of the cylindrical generator magnet 7, is attached at the upper end. A magnet 8 for lower limit limitation is provided. When the generator magnet 7 thus reaches its lowering limit, the N pole at the upper end of the magnet 8 and the N pole at the lower end of the generator magnet 7 repel each other to limit the lowering limit.

On the other hand, a limited coil spring 10 having a contact plate 9 at the lower end is disposed on the lower surface of the upper end plate of the cylindrical case l, and on the other hand, a flange body II is made to protrude from the middle of the outer periphery of the shaft 2. 2 reaches its upward limit, the collar body 11 elastically abuts against the contact plate 9 of the limiting coil spring 10 to limit the upward limit.

In the figure, reference numeral 12 denotes a connecting ring configured at the lower end of the cylindrical case l for connecting to the vehicle wheel side, and 13 denotes a connecting ring configured at the upper end of the shaft 2 for connecting to the vehicle body side. .

Furthermore, as shown in FIG. 2, both ends of the generator coil 6 are connected to the AC input end of the bridge diode 14, and the output end of the bridge diode 14 is connected to the battery 15.

In this embodiment, as configured as described above, the connecting ring 12 at the lower end of the cylindrical case l is connected to the wheel side of the vehicle, while the connecting ring 13 at the upper end of the shaft 2 is connected to the vehicle body side. do. Since this embodiment has a small and simple structure, it can be used as a support for a bicycle saddle, a support column for a cargo bed, or the like.

When this shock absorber is used as a support column for supporting a loading platform, a pair of shock absorbers are arranged on both sides, and the connecting ring 13 is connected to the loading platform, and the connecting ring 12 is connected to the axle side.

When the bicycle travels on a road, vibrations generated in the wheels due to unevenness of the road surface are first transmitted from the coupling ring 12 to the cylindrical case 1 of the shock absorber. Then, due to the vibration of the cylindrical case 1, the generating coil 6 is moved relative to the generating magnet 7.
This results in linear reciprocating motion by cutting off the magnetic flux of , and as a result, an electromotive force is generated in the generating coil 6. On the other hand, due to the generation of the electromotive force, a braking force is generated against the reciprocating motion of the generator coil 6 and the generator magnet 7 due to vibration. This braking force acts as a buffering effect.

In this manner, according to this embodiment, the energy of vibrations caused by unevenness of the road is converted into electrical energy, which serves as an auxiliary power source for the electric power used in the vehicle, and also functions as a shock absorber.

The lower limit of the above-mentioned reciprocating vertical movement of the generator magnet 7 is limited by the magnetic repulsion between the magnet 8 disposed on the bottom of the cylindrical case 1 and the generator magnet 7, and the upper limit is limited by the magnetic repulsion between the magnet 8 and the generator magnet 7 disposed on the bottom of the cylindrical case 1. The contact plate 9 disposed at the lower end of the limiting coil spring 1O and the flange body 11 disposed in the middle of the five-shaft 2 come into contact and elastically repel, thereby limiting the limit.

Furthermore, as shown in FIG. 2, the alternating current of variable frequency generated in the generator coil 6 of the shock absorber is rectified by the bridge diode 14, and then connected to the battery 15.
is charged. The electric current charged in the battery 15 is used to meet the needs of various devices mounted on vehicles, as in the case of general electric current.

[Effects of the Invention] The present invention effectively utilizes energy such as vibrations caused by unevenness of a road surface while a vehicle is running, which is otherwise wasted. That is, the wasted energy such as vibration is converted into electric power and used as an auxiliary power source, and along with this, a buffering effect of the suspension etc. is also obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic sectional view thereof, and FIG. 2 shows a circuit for rectifying the extracted alternating current to charge the battery.

Claims (1)

[Claims] 1. A generating coil and a generating magnet are combined so that the former cuts the magnetic flux of the latter and makes linear reciprocating motion, and the generating coil and the generating magnet A shock absorbing device for vehicles, comprising a limiting means for limiting the reciprocating motion within a certain range, and further comprising a connecting means for separately connecting the generating coil and the generating magnet to the vehicle body side and the wheel side of the vehicle. 2. A shaft member is used as the connection means to the vehicle body side, a cylindrical case is used as the connection means to the wheel side, and the power generation coil is disposed upright on the bottom surface of the cylindrical case, and the power generation coil is used as the power generation magnet. A cylindrical magnet is disposed in the power generating coil so as to be movable up and down, and the lower end of a shaft member hanging down from the top end of the cylindrical case so as to be movable up and down is connected to the upper end of the cylindrical magnet. On the bottom of the cylindrical case, in order to repel the cylindrical magnet when it reaches its lowering limit, a limiting magnet is installed at the top end having the same magnetic pole as the lower end side magnetic pole of the cylindrical magnet, and on the other hand, the cylindrical case 2. A vehicle according to claim 1, wherein a limiting spring member is disposed at an upper part of the shaft member, and a flange protrudes from the middle of the shaft member to come into contact with the limiting spring member when the shaft member reaches its upper limit. Buffer device.