KR102567415B1 - Tire with adjustable center of gravity - Google Patents

Abstract

The present invention discloses a tire whose center of gravity is adjustable.
In the tire whose center of gravity is controlled according to the present invention, a magnetic fluid tube provided above the inner liner portion forming the inner surface of the tire by being stacked on a tire tread portion and a magnetic field disposed adjacent to the magnetic fluid tube to form a magnetic field It is characterized in that it includes a formation part, whereby the tire can adjust the center of gravity inside the tire according to driving conditions to improve driving stability during high-speed driving, straight ahead, or cornering.

Description

Tire with adjustable center of gravity

The present invention relates to a tire having an adjustable center of gravity, and more particularly, the center of gravity of a tire is adjustable, which can improve driving stability during high-speed driving, going straight, or cornering by adjusting the center of gravity inside the tire according to driving conditions. It's about tires.

In general, tires play a very important role in driving a vehicle, and the performance of these tires not only varies in abrasion performance depending on the grounding shape and grounding pressure distribution, but also determines the steering stability, braking performance, drivability, and fuel economy of the vehicle. The ground pressure distribution of a tire is an important criterion for determining the shape and characteristics of a tire.

Accordingly, technologies related to tires and tire wheels that can obtain optimal effects on vehicle operation and are easy to install and manage have been developed.

For example, Korean Patent Registration No. 0360998 discloses a rim (or wheel) with an inner rim that is coupled to the inside of a tire and a coupling part that is tightly screwed to the outside of the inner rim and has a disc Disclosed a wheel for mounting a pneumatic radial tire that can easily mount a tire on a wheel manually by separately configuring an outer rim integrally formed with the outer rim, and Korean Utility Model Registration No. In a fixed tire wheel, the support diskette and the drum are integrally formed, but the inner circumferential surface of the end of the drum is integrally formed with the main body wheel and the support diskette constituting the tapped female screw portion, and the cover having a male screw portion fastened to the female screw portion of the drum Korean Patent Registration No. 1277413 discloses an invention composed of wheels and enabling easy fastening of tires, and Korean Patent Registration No. 1277413 is formed on the left and right sides of the inner space and independently maintains air pressure to enable vehicle operation. A second chamber, a third chamber formed between the first and second chambers to extend to the outer circumferential surface of the wheel, and first and second chambers respectively formed on both sides of the third chamber so that the third chamber is isolated from the first and second chambers. It consists of two bulkheads, each end of which is extended to reach both sides of the attachment support portion protruding from the outer circumferential surface of the wheel, so that the first and second chambers are in close contact with both side surfaces of the attachment support portion when the first and second chambers are inflated. When the tire is mounted on the wheel, the first sidewall and the second partition wall located on both sides of the second chamber can ride over the slope formed in the attachment support part, and the first sidewall and the first sidewall located on both sides of the first chamber First and second chambers formed lower than the partition wall, the ends of the first and second partition walls attached to both side surfaces of the attachment support unit with an adhesive, respectively, and receiving air through the first and second injection passages provided in the wheel, respectively A safety tire that maintains air pressure and separates each end of the support bulkhead from the attachment support by inflating by receiving air through the third injection passage provided in the wheel when the tire is separated from the wheel, and a safety tire used therein Although a wheel for a vehicle is disclosed, since these are technologies related to wheels or rims, a related technology for tires that come into direct contact with the road surface is required.

Therefore, the technical problem to be solved by the present invention is to provide a tire whose center of gravity is adjustable, which can improve driving stability during high-speed driving, straight ahead, or cornering by adjusting the center of gravity inside the tire according to driving conditions. .

In order to solve the above-described technical problem, the present invention provides a magnetic fluid tube provided on the upper part of the inner liner portion stacked on the tire tread portion to form the inner surface of the tire and a magnetic fluid tube disposed adjacent to the magnetic fluid tube to form a magnetic field. Provided is a tire whose center of gravity is controlled, characterized in that it includes a magnetic field forming unit.

According to another embodiment of the present invention, the ferrofluid tubes may be arranged in a circular shape along the circumferential direction of the tire.

According to another embodiment of the present invention, a plurality of magnetic fluid tubes may be arranged symmetrically with respect to the center line of the tire at equal intervals.

According to another embodiment of the present invention, the magnetic field forming unit may be provided outside the magnetic fluid pipe with respect to the tire center line.

According to another embodiment of the present invention, the magnetic field forming unit may include a bridge pipe providing a passage so that the magnetic fluid inside the magnetic fluid pipe can move to an adjacent magnetic fluid pipe.

According to the tire having an adjustable center of gravity according to the present invention, the center of gravity of the tire can be adjusted inside the tire according to driving conditions, thereby improving driving stability during high-speed driving, going straight, or cornering.

1 is a cross-sectional view of a tire according to the present invention;
Figure 2 shows a cross-sectional view of the arrangement of the magnetic field forming unit according to the present invention,
3 is a view showing the shape of the magnetic fluid gathered at the center line of the tire by the applied magnetic field when the tire according to the present invention travels straight;
4 shows a shape where the magnetic fluid moves by the applied magnetic field and gathers outward when cornering in the left direction of the tire according to the present invention,
FIG. 5 is a view showing a shape in which magnetic fluid is moved by an applied magnetic field and gathered inward when cornering in a right direction of a tire according to the present invention.

It should be noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention, and the technical terms used in the present invention are not specifically defined in other meanings in the present invention. Unless otherwise specified, it should be interpreted in a meaning generally understood by those skilled in the art, and should not be interpreted in an excessively comprehensive meaning or in an excessively reduced meaning.

In addition, when the technical terms used in the present invention are incorrect technical terms that do not accurately express the spirit of the present invention, they should be replaced with technical terms that those skilled in the art can correctly understand.

In addition, general terms used in the present invention should be interpreted as defined in advance or according to context, and should not be interpreted in an excessively reduced sense.

In addition, the singular expression used in the present invention includes a plurality of expressions unless the context clearly indicates otherwise. It should not be construed as necessarily including all of the various steps, and it should be construed that some components or some steps may not be included, or additional components or steps may be further included.

On the other hand, it should be noted that the accompanying drawings are only exaggerated, reduced or conceptually provided to understand the present invention, and thus the present invention is not limited thereto.

Figure 1 is a cross-sectional view of a tire according to the present invention, Figure 2 shows the arrangement of the magnetic field forming unit according to the present invention in cross-section, Figure 3 is a tire according to the tire center line by the magnetic field applied to the magnetic fluid when the tire runs straight Figure 4 shows the shape gathered in the outward direction by moving the magnetic fluid by the applied magnetic field during cornering in the left direction of the tire according to the present invention, Figure 5 shows the shape gathered in the outward direction according to the present invention It is a drawing showing a shape in which the magnetic fluid is moved by the applied magnetic field and gathered inward when cornering in the right direction of the tire. Refer to this.

The tire 100 whose center of gravity is controlled according to the present invention includes a plurality of magnetic fluid tubes 130 provided above the inner liner portion 120 forming the inner surface of the tire by being stacked on the tire tread portion 110, and the magnetic It is characterized by including a magnetic field forming unit 150 disposed adjacent to the fluid pipe 130 to form a magnetic field.

Here, it is expected that most of the tires will be pneumatic tires, but it can be applied to other types of tires intended to reduce the effect of centrifugal force.

In addition, the magnetic fluid pipe 130 is not only used as a passage through which the magnetic fluid can move, but also high-temperature heat is frequently generated from the tire according to vehicle driving, so that heat resistance and durability can be secured. Phenylene Sulfide, PPS) material can be prepared.

The ferrofluid is a liquid that is strongly magnetized when a magnetic field is present, and is a colloidal dispersion in which fine metal particles that can be magnetic are dispersed in a liquid (water or oil). When is added, the dispersion has a characteristic of moving due to magnetic force.

In addition, since the magnetic fluid tubes 130 are provided in plurality and can be arranged along the circumferential direction of the tire, the magnetic fluid injected therein rotates with the rotation of the tire during driving or is driven to a location close to the driving road surface by gravity. In particular, depending on the driving situation, whether it is high speed, straight ahead, left cornering, right cornering, and how much centrifugal force is detected, the size of the magnetic field is determined, and the determined magnetic field generation signal is received by the control unit 160. A magnetic field forming unit 150 generates a magnetic field, and the magnetic fluid 135 inserted into the magnetic fluid tube under the formed magnetic field is magnetized according to the magnetic field and can move by magnetic force, creating a tire according to the present invention. Since the vehicle is affected by the centrifugal force during cornering and causes a pull phenomenon, in order to prevent or reduce the pull, the center of gravity of the tire can be adjusted by moving the magnetic fluid in the opposite direction of the centrifugal force, thereby improving the cornering performance of the vehicle. there is.

The controller 160 may be disposed inside the tire as shown in the drawing, and may determine the magnetic field generated by the magnetic field forming unit 150, the direction of the magnetic field, and the size of the magnetic field based on the values detected by the gyro sensor and the acceleration sensor. , The power required to drive the control unit 160 and the magnetic field forming unit 150 is implemented in an electric tire, as disclosed in the prior patent document (application number: 10-2016-0012334) of the present inventor without a separate battery. It is possible to use the power generated by the bending and stretching motion of the sidewall of the tire using a piezoelectric element.

For example, there is an aspect similar to the effect of reducing the turning radius or securing driving stability by moving the rider's body in the opposite direction of the centrifugal force at the corner when riding a similar bike.

In detail according to the driving situation of the vehicle, the direction and magnitude of the centrifugal force is detected when the vehicle is cornering to the left based on the tire 100 attached to the left side of the vehicle (for example, with a sensor such as a gyroscope or acceleration sensor). The control unit 160, which measures the direction and angular velocity), determines that the tire is receiving centrifugal force inward, and sets the magnetic field forming unit 150 so that the magnetic fluid 135 moves in the direction outside (OUTSIDE) of the tire. A magnetic field of is applied, the magnetic fluid moves and the center of gravity can be adjusted in the opposite direction of the centrifugal force.

In this case, it is preferable that the tire attached to the right is controlled so that the magnetic fluid is collected in an INSIDE direction.

Conversely, when the vehicle is cornering to the right based on the tire attached to the right side of the vehicle, the magnetic field of the magnetic field forming unit 150 is applied by the control unit to the contrary to the previously described content, so that the magnetic fluid gathers in the outward direction of the tire, and the left The tire attached to can cause the magnetic fluid to move inward.

As another example, the control unit may apply a magnetic field so that the magnetic fluid 135 moves to the center of the inner liner unit 120 when traveling straight ahead at a speed higher than a certain speed, so that straightness may be helpful.

Meanwhile, the plurality of magnetic fluid tubes 130 may be arranged in a circular shape along the circumferential direction of the tire, and the inner liner part 120 includes a central magnetic fluid tube 130, a left magnetic fluid tube 130', and a right side magnetic fluid tube 130. It is preferable to arrange symmetrically with respect to the tire center line (CL) at equal intervals like the sexual fluid pipe (130 ").

In this way, for example, the magnetic field forming unit 150 may be provided with a central magnetic field forming unit 151, a left magnetic field forming unit 152, and a right magnetic field forming unit 153 for each of the three magnetic fluid tubes.

These magnetic field forming parts (150: 151, 152, 153) may be provided outside the magnetic fluid pipe with respect to the tire center line (CL), and the left magnetic field forming part 152 is in the left direction (OUTSIDE), the right magnetic field The formation part 153 is preferably disposed at a position capable of pulling the magnetic fluid in the right direction (INSIDE).

That is, the magnetic fluid will be brought into close contact with the inner surface of the tire (inner liner surface) during vehicle driving by centrifugal force, and the formed magnetic field can move the center of gravity of the tire by pulling it inward or outward. When the zoom center is moved, the left magnetic field forming unit 152 is turned on (ON), the center magnetic field forming unit 151 and the right magnetic field forming unit 153 are turned off (OFF), and when moving inward, the left magnetic field forming unit 152 and the central magnetic field are formed. The unit 151 is turned off, the right magnetic field forming unit 153 is turned on, the left magnetic field forming unit 152 is turned off, the center magnetic field forming unit 151 is turned on, and the right magnetic field forming unit 153 is turned off during high-speed driving. can be done

Here, since the force applied to the magnetic fluid increases as the applied magnetic field becomes stronger, the bridge pipe 140 provides a passage so that the magnetic fluid 135 inserted into the magnetic fluid pipe can move to the adjacent magnetic fluid pipe 130'. ) is further provided, so that the magnetic fluid is additionally supplied, so that the bearing force against the centrifugal force that increases when the center of gravity is moved can be secured.

Tire 100, tread part 110, inner liner part 120, magnetic fluid pipe 130, magnetic fluid 135, bridge pipe 140, magnetic field forming part 150.

Claims (5)

a magnetic fluid tube provided above the inner liner portion stacked on the tire tread portion to form the inner surface of the tire; and
It includes; a magnetic field forming unit disposed adjacent to the magnetic fluid tube to form a magnetic field;
The tire with an adjustable center of gravity, characterized in that the magnetic field forming unit includes a bridge tube providing a passage for the magnetic fluid inserted into the magnetic fluid tube to move to an adjacent magnetic fluid tube.
According to claim 1,
The tire with an adjustable center of gravity, characterized in that the magnetic fluid tubes are arranged in a circular shape along the circumferential direction of the tire.
According to claim 2,
A tire with an adjustable center of gravity, characterized in that the plurality of magnetic fluid tubes are arranged symmetrically with respect to the center line of the tire at equal intervals.
According to claim 3,
The tire with an adjustable center of gravity, characterized in that the magnetic field forming unit is provided outside the magnetic fluid tube with respect to the center line of the tire.
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