KR20210035935A - A pneumatic tire having stud variable control apparatus - Google Patents

Abstract

The present invention relates to a pneumatic tire equipped with a stud variable control device, wherein a stud installed inside a block of a tread so that the pneumatic tire can safely travel on ice and snowy roads in winter, and the stud inside the block are electrically It includes a stud variable control device installed to be pushed or pulled by a signal, and when the electric energy accumulated in graphene is applied to the variable material due to the rolling motion of the tire, the variable material stretches straight to push the stud or the variable material. By blocking the electric energy applied to the stud, the variable material that returns to the bending shape pulls the stud, thereby variably controlling the degree of protrusion of the stud according to the road conditions to operate.

Description

Pneumatic tire with stud variable control device {A PNEUMATIC TIRE HAVING STUD VARIABLE CONTROL APPARATUS}

The present invention relates to a pneumatic tire having a variable stud control device, and specifically, when the electric energy accumulated in graphene is applied to the variable material by rolling motion of the tire, the variable material stretches straight and pushes the stud. It is equipped with a stud variable control device that enables the variable material to be operated by variably controlling the presence or absence of the stud depending on the road conditions by pulling the stud by blocking the electric energy applied to the variable material. It relates to pneumatic tires.

In general, “stud tires” are already widely disclosed and detailed descriptions thereof will be omitted, and reference may be made to Patent No. 10-0833783 “Stud Pins for Snow Tires” and Patent No. 10-1973183 “Stud Tires”. I can.

In addition, the “stud pin for snow tire” is designed to prevent separation of the stud pin by forming an uneven portion on the outer peripheral surface of the body portion of the stud pin to increase the frictional force between the tire and the stud pin, and the friction force on the outer surface of the stud pin is large. The uneven portion is formed so as to act to prevent the stud pin from being separated from the stud groove of the snow tire, but there is a problem that the stud pin is easily separated when the road condition is poor. In addition, even in winter, when the road surface condition improves and the road is out of the ice or snowy road, there is a problem in that the driving conditions are deteriorated, such as the road is damaged by the stud pin and the driving noise is increased. In addition, when the snow tire is used for a long time, the function of the stud is deteriorated and the stud tire has to be replaced, which incurs additional replacement costs.

In addition, “stud tire” forms an air layer locally between the stud pin and the inner surface of the recess in order to prevent the stud pin from being separated or separated from the recess of the tread due to rotational force generated when the stud tire runs on the road surface. By doing so, it is possible to absorb shocks generated during road driving to improve drivability and stability.However, since the stud pins in snow tires are always in a protruding state, there is an inconvenient problem of changing to a regular tire or a four season tire when the season changes.

And even if snow tires improve driving stability on ice and snowy roads, in the case of driving on ice and snowless roads in winter, they cause damage to the road as well as generate noise during driving, which degrades driving performance. have.

[Patent Document 0001] Registered Patent No. 10-0833783 "Snow Tire Stud Pin" (Announcement 2008.05.29.) [Patent Document 0002] Registered Patent No. 10-1973183 "Stud Tire" (Announcement 2019.04.26.)

The present invention was invented to solve the above problems, and an object of the present invention is to variably control the use of studs according to road conditions.

In addition, another object of the present invention is to be able to push out the stud when applying the electrical energy accumulated in graphene to the variable material due to the rolling motion of the tire.

In addition, another object of the present invention is to allow the variable material to pull the stud when blocking the electrical energy of graphene from being applied to the variable material.

Another object of the present invention is to enable the use of the studs to be operated by a driver or a sensor according to road conditions, thereby improving gripping power and driving performance of tires on ice and snowy roads.

Another object of the present invention is to store electricity generated by a stud variable control device when applied to a tire of an electric vehicle, and supply it to the electric vehicle's electrical components when necessary.

The present invention for achieving the above technical problem is a stud installed inside a block of a tread so that a pneumatic tire can safely travel on ice and snowy roads in winter, and the stud inside the block is pushed by an electrical signal. It characterized in that it comprises a stud variable control device installed to be able to pull or pull.

The stud variable control device is installed so as to be in contact with the stud under the block in which the stud is embedded, a variable material that is varied in a straight or bent form by an electrical signal, and an electrical signal is applied to the variable material. The graphene is installed inside the block so that the tire's rolling motion is converted into electric energy and then stored, and an electronic control device installed in the vehicle to control the graphene with an electric signal when the driver operates. It characterized in that it is made by doing.

The variable material is a shape-memory alloy material, and is disposed and installed inside a block so as to be in close contact with the lower portion of the stud while being connected to the graphene.

The stud is characterized in that it is formed by forming an inclined plane having a forward and backward inclined plane formed to be symmetrical to an outer circumferential surface so that the stud variable control device can accurately push and pull.

A variable material composed of a variable material for forward and a variable material for reverse is installed on the forward slope and the reverse slope so as to be arranged vertically and to respond variably to each of the forward slope and the reverse slope.

The forward variable material is installed on the forward slope of the stud, and is straightened so that the stud protrudes by the action of the forward graphene, and is bent so that the stud is inserted.

The reversing variable material is installed on the reverse slope of the stud, and is bent so as to protrude by the action of graphene for reversing, and is straightened so that the stud is inserted.

According to the pneumatic tire provided with the variable stud control device of the present invention, there is an effect of allowing the stud to be easily pushed when the electric energy accumulated in graphene is applied to the variable material due to the rolling motion of the tire.

In addition, when the electrical energy of graphene is blocked from being applied to the variable material, there is an effect that the variable material can easily pull the stud.

In addition, there is an effect of allowing the use of studs to be variably controlled according to the condition of the road.

In addition, by allowing the stud to be used only on ice and snowy roads, there is an effect of improving the grip of the tire and preventing damage to the road.

In addition, there is an effect of storing electricity generated by the stud variable control device and supplying it to an electric vehicle when necessary, so that it can be used for electrical components.

In addition, by allowing the stud to be used without damaging the road, there is an effect of securing driving performance not only on road protection but also on ice and snowy roads.

In addition, by allowing the stud to be variably controlled and used, it is possible to reduce the troublesome replacement of the tire, thereby eliminating the purchase of seasonal tires and reducing the maintenance cost of the tire.

In addition, there is an effect of improving the development efficiency and productivity of general-purpose tires since it is possible to omit the inconvenience of designing a tire for summer and a tire for all seasons.

In addition, by allowing the studs to be variably used depending on whether or not the road ice is formed, there is an effect of further reducing the impact on the asphalt and having an excellent gripping force on the road ice.

1 is a view showing a pneumatic tire provided with a stud variable control device according to the present invention.
2 is a view showing the operation of the stud variable control device shown in FIG.
3 is a view showing another embodiment of the stud variable control device shown in FIG.
4 is a view showing another embodiment of the stud variable control device shown in FIG.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely describe the present invention to those with average knowledge in the industry. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. In addition, detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The pneumatic tire 2 provided with the stud variable control device according to the present invention, as shown in Fig. 1, of the tread 4 so that the pneumatic tire 2 can safely travel on ice and snowy roads in winter. It comprises a stud 10 installed inside the block 6, and a stud variable control device 20 installed to push or pull the stud 10 inside the block 6 by an electric signal. The stud 10 is installed so as to be able to protrude and retreat from the inside of the block 6 of the tread 4. Accordingly, the stud 10 is easily moved when the stud variable control device 20 is operated.

In addition, the stud variable control device 20 is installed so as to be in contact with the stud 10 under the block 6 in which the stud 10 is embedded, and is made to be varied in a straight or curved form by an electric signal. The variable material 24 and the variable material 24 are installed inside the block 6 so that an electrical signal can be applied to the variable material 24, but the rolling motion of the tire 2 is converted into electrical energy and then stored. An electronic control device 28 is installed in the vehicle so that the pin 26 and the graphene 26 can be controlled with an electric signal when the driver manipulates the pin 26. The graphene 26, as shown in Figs. 1 and 2, is embedded in the block 6 of the tread 4, but on the bottom of the stud 10 so that the stud 10 can be easily controlled. It is placed and installed horizontally.

The variable material 24 is formed to perform an important function of pushing or pulling the stud 10. That is, the variable material 24 is formed such that it is arranged so that straightness and bending deformation can be well performed by the power source, as well as the quantity unit configured to be sufficient.

In addition, the variable material 24 is a shape-memory alloy material, and is disposed inside the block 6 so as to be in close contact with the lower portion of the stud 10 while being connected to the graphene 26 and installed.

In addition, the present invention, as shown in Figs. 3 and 4, the stud 10 is provided with an inclined surface 30 formed to be symmetrical to the outer circumferential surface so that the stud variable control device 20 can be accurately pushed and pulled. It can also be used. The inclined surface 30 is composed of a forward inclined surface 30a and a backward inclined surface 30b. In addition, in the stud variable control device 20, the variable material 24 is vertically disposed and installed on each of the forward slope 30a and the reverse slope 30b. The variable material 24 is formed of a variable material 24a for forward and a variable material 24b for backward so that it is disposed vertically on the forward slope 30a and the reverse slope 30b so as to variably respond.

The forward variable material 24a and the reverse variable material 24b correspond to and are controlled by the forward graphene 26a and the backward graphene 26b constituting the graphene 26. .

In addition, the forward variable material 24a is installed on the forward inclined surface 30a of the stud 10, and is straightened so that the stud 10 protrudes by the action of the forward graphene 26a, and the stud 10 ) Is bent to lead in. In addition, the reverse variable material 24b is installed on the reverse slope 30b of the stud 10, and is bent so as to protrude the stud 10 by the action of the reverse graphene 26b, and the stud 10 It is straightened so that it is inserted.

In addition, in addition to the stud 10, it is possible to install an elastic member (not shown) so that it is always in a retracted state and then protrudes when the variable material 24 is operated.

For reference, graphene 26 is a material having an atomic-sized honeycomb structure made of carbon atoms, and is made of graphite as a raw material. In addition, since the graphene 26 has a thickness of 0.2 nm, it has high transparency and can transmit a current 100 times more than copper at room temperature 100 times faster than silicon, and its thermal conductivity is more than twice as high as that of diamond, as well as mechanical strength. Although it is more than 200 times stronger than steel, it has good elasticity and does not lose its electrical conductivity even when it is stretched or folded.

In addition, the tire 2 equipped with the stud variable control device 20 may be applied to an electric vehicle and used. Through this, electricity required for the electric vehicle may be stored in the graphene 26 of the stud variable control device 20, and then used by supplying the electricity to the electronic parts of the electric vehicle that require electricity, thereby extending the life of the battery.

Hereinafter, an example of use of the present invention made as described above will be described in detail with reference to the drawings.

First, when driving on a snowy or icy road, when the driver manipulates the stud variable control device 20, the electronic control device 28 sends a signal to the graphene 26 to operate. The graphene 26 operates and applies power to the variable material 24, which is a shape memory alloy material connected thereto. Accordingly, when the variable material 24 reaches a certain temperature while generating heat by the applied power, it is in a straightened state.

As described above, when the variable material 24 is in a straight state, the stud 10 rises in the block 6 and a portion of the tread 4 protrudes. The protrusion of the stud 10 increases the gripping force of the tire 2 rolling on snowy and icy roads. Through this, the pneumatic tire 2 can safely travel on an icy road. That is, the pneumatic tire 2 exhibits a safe driving performance as the traction is improved by the studs 10 protruding from snowy or icy roads.

In addition, when driving on a road other than a snowy road or an icy road, the electronic control device 28 blocks the energization of the graphene 26 when the driver releases the operation of the stud variable control device 20. The variable material 24, which is a shape memory alloy material whose power is interrupted by the graphene 26, is returned to its original posture according to the characteristics of the material while maintaining the bent state while the heating temperature decreases as the heat transfer is cut off. . Accordingly, the stud 10 is in a state of being inserted into the block 6 on the tread 4 as the variable material 24 is bent and restored. Accordingly, the pneumatic tire 2 runs on a general road in a quiet state.

And, in the case of driving on a general road other than an ice or snowy road after installing the studs 10 with the slopes 30 formed, the graphene 26b for reversing is used for reversing by a signal from the electronic control device 28. Power is applied to the variable material 24b so that the reverse variable material 24b is in a straight posture. Accordingly, the reverse variable material 24b pushes the reverse slope 30b so that the stud 10 is in a retracted state. At this time, the forward graphene 26a blocks the power applied to the forward variable material 24a with a signal from the electronic control device 28 in advance. Therefore, the forward variable material (24a) continues to maintain the bending state so that the stud 10 can maintain the retracted state.

On the contrary, in the case of driving on an ice or snowy road after installing the studs 10 with the slopes 30 formed, the forward graphene 26a acts as a signal from the electronic control device 28, resulting in a variable material for forward movement. Power is applied to (24a). Accordingly, the forward variable material 24a pushes the forward slope 30a while being in a straight state. Accordingly, the stud 10 protrudes on the tread 4, so that it is possible to drive in a state in which the grip on snow and ice roads is improved. At this time, as the signal from the electronic control device 28, the graphene 26b for backward movement is in a state in which the power to the variable material 24b for backward movement is cut off in advance, so that the variable material 24b for backward movement continues to be in a bent state. .

The embodiment of the pneumatic tire having the variable stud control device of the present invention described above is only exemplary, and those of ordinary skill in the art to which the present invention belongs, various modifications and other equivalent implementations therefrom. You can see that an example is possible. Therefore, it will be appreciated that the present invention is not limited to the form mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. In addition, the present invention is to be understood as including the spirit of the present invention as defined by the appended claims and all modifications, equivalents and substitutes within the scope thereof.

2: pneumatic tire 4: tread
6: block 10: stud
20: stud variable control device 24: variable material
24a: variable material for forward movement 24b: variable material for backward movement
26: graphene 26a: forward graphene
26b: graphene for reverse 28: electronic control device
30: slope 30a: forward slope
30b: reverse slope

Claims (7)

Studs 10 installed inside the block 6 of the tread 4 so that the pneumatic tire 2 can safely travel on ice and snowy roads in winter,
A pneumatic tire with a stud variable control device, characterized in that it comprises a stud variable control device (20) installed in the block (6) so as to push or pull the stud (10) by an electrical signal. The method of claim 1,
The stud variable control device 20,
A variable material 24 installed to be in contact with the stud 10 under the block 6 in which the stud 10 is embedded, but to be varied in a straight or bent form by an electric signal,
Graphene 26 is installed inside the block 6 so as to apply an electrical signal to the variable material 24, but converts the rolling motion of the tire 2 into electrical energy and stores it,
A pneumatic tire with a stud variable control device, characterized in that it comprises an electronic control device (28) installed in the vehicle so that the graphene (26) can be controlled by an electric signal when a driver operates. The method of claim 1,
The variable material 24,
A pneumatic tire having a variable stud control device, characterized in that it is a shape memory alloy material and is connected to and installed in the graphene 26 while being arranged and installed inside the block 6 so as to be in close contact with the lower portion of the stud 10. The method of claim 1,
The stud 10,
Stud variable control device, characterized in that a bevel 30 having a forward bevel 30a and a reverse bevel 30b formed to be symmetrical to the outer circumferential surface so that the stud variable control device 20 can accurately push and pull Pneumatic tire with a. The method of claim 4,
On the forward slope 30a and the reverse slope 30b,
Pneumatic inlet having a variable stud control device, characterized in that a variable material 24 composed of a variable material 24a for forward and a variable material 24b for backward is installed so as to be arranged vertically to respond variably. tire. The method of claim 5,
The forward variable material (24a),
It is installed on the forward slope (30a) of the stud (10),
A pneumatic tire with a stud variable control device, characterized in that the stud 10 is straightened so that the stud 10 protrudes by the action of the forward graphene 28a, and the stud 10 is bent so as to be retracted. The method of claim 5,
The reverse variable material 24b,
It is installed on the reverse slope (30b) of the stud (10),
A pneumatic tire having a stud variable control device, characterized in that the stud 10 is bent so as to protrude by the action of the reverse graphene 28b and is straightened so that the stud 10 is inserted.

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