KR20170124869A - A self-powered tire using a thermoelectric element and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a self-powered tire using a thermoelectric element, including: a power generation layer attached to an inner liner of a tire, and including a thermoelectric element having a function of supplying power to a sensor module inside the tire; a protective layer for closely attaching and fixing the power generation layer to the inner liner and preventing detachment. Accordingly, the present invention has an advantage of supplying power to a sensor module inside a tire while being able to perform self-generation while securing the coupling reliability of the power generation layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a self-generating tire using a thermoelectric element and a manufacturing method thereof,

The present invention relates to a tire capable of self-power generation using a thermoelectric element and a method of manufacturing the same, and more particularly, to a power generation layer including a thermoelectric element and a protective layer for fixing the power generation layer and preventing detachment The present invention relates to a tire capable of self-power generation using a thermoelectric element, which can supply power to a sensor module inside the tire.

A method of generating power by using the rotation of a tire or a wheel in an automobile includes a method of using a regenerative braking energy by mounting a motor to a wheel, a method of using a pressure applied to a tire and a piezoelectric element (Korean Patent Publication No. 2010-0027479 , No. 2011-0016604, No. 2013-0135846, etc.), and a method of generating electricity by using permanent magnets and coils (Korean Patent Laid-Open Nos. 2010-0114868 and 2011-0125198).

The method of generating electricity using regenerative braking energy is a method applied to a hybrid vehicle at present, and when the braking is performed, the motor is generated by using a method of operating as a generator. While the motor is running, it consumes power.

The method using pressure and piezoelectric elements is a method of generating electricity by using the pressure between the tire and the ground during traveling and can be easily developed in the running tires. However, by using a piezoelectric element inserted in the tire, There is a disadvantage that a large change is required. In addition, there is a possibility that the impurity of the piezoelectric element is added to the structure of the present tires to cause problems such as safety, driving performance, durability, and shorten the running life, and even if the development is completed, the additional cost Can be large.

In a power generation system using a permanent magnet and a coil, the permanent magnet is fixed without rotating, and the power is generated by using the principle that induction voltage is generated as the coil wound on the wheel rotates. This method is not a direct power generation using a tire but a power generation using rotation of a drive shaft. Japanese Patent Application Laid-Open No. 2003/099592 discloses a method of magnetizing a steel cord using a magnetic material, that is, a magnet. In order to strengthen the magnetization, a method of magnetizing after completing a tire is used. There is a need to add or remove materials that are already magnetic in steel cords, to increase the cost of making steel belts, and to perform additional durability and reliability test tests on added materials. In addition, there is a possibility that the appearance of the tire may be damaged by carrying out the step of magnetizing once, that is, the step of magnetizing the finished tire. Since the magnetic field generation directions of one belt and two or three belts are different, it is necessary to magnetize them in two or more directions in order to magnetize them. In the case of one belt magnetization, the belt of two or three is affected, The polarization of one or more of the belts may be insufficient when the magnetization is performed in the directions of the belts 2 and 3 due to the occurrence of polarization in the belt direction. In addition, when the finished tire is magnetized, there is a disadvantage in that the rubber of the tire other than the air is a resistance which interferes with the magnetic field, so that a large magnetic field must be generated, and more electric power must be used to generate a large magnetic field. Also, Korean Patent No. 1396161 discloses a method of producing a magnetized tire by magnetizing a belt and generating an induced voltage. A method of magnetizing a belt before manufacturing a tire is used, and there is a problem that a magnetic field is continuously formed in a permanent magnet type.

Korean Patent Laid-Open Publication No. 2014-0053636 has an advantage in that wireless supply is provided by an energy supply patent through wireless power transmission, but if the distance from the supply device is increased, transmission efficiency is poor. When the tire travels, the wireless power transmission distance continuously changes, which is disadvantageous in terms of efficiency.

Korean Patent No. 1514523 discloses a method of generating power using a thermoelectric element and including a circuit for charging the battery with generated power. In Korean Patent No. 0962665, a thermoelectric element And is used as electric power for driving the cooling / heating system. Also, Korean Patent No. 1240674 uses a thermoelectric element for thermoelectric power generation. However, there is no patent using a thermoelectric element in a tire, and if it is attached to a tire, if it includes a battery and a charging circuit, the weight of the tire may deteriorate due to an increase in weight.

In this connection, in Korean Patent No. 1267969 (hereinafter referred to as Prior art 1), a thermoelectric element is inserted between one belt and two belts, and when the thermoelectric element generates electricity, the thermoelectric element discharges it with a subtread, Is lowered.

In US Patent Publication No. 2009-0151440 (hereinafter referred to as Prior Art 2), a method of generating electricity by disposing a thermoelectric element in a tire is used. In the method of manufacturing a thermoelectric element, A method of efficiently generating power, a method of generating electricity through a temperature difference between a tire and an inner air by arranging the tire inner liner in a three-tiered arrangement such as a power generating layer and a heating layer on a layer close to the inner liner, .

KR 1267969 B1 US 2009-0151440 A1

In the prior art 1, although a method of inserting a thermoelectric element into a tire is disclosed, the thermoelectric element is used as means for discharging heat inside a tire, not generating electricity by generating electric power. And the foreign matter enters between the belts, which may affect the durability of the tire. In addition, since the prior art 2 uses an adhesive to adhere to the inside of the tire, it may be a problem in adhesion durability. In the case of using a polar body, that is, a heat pole and a pole as an area, there is a risk of damage due to impact, There is a disadvantage that it can occur.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a technology for a self-generating tire using a thermoelectric element having power generation efficiency while stably fixing a self generating device including a thermoelectric element in a tire.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.

According to an aspect of the present invention, there is provided a tire capable of self-power generation using a thermoelectric element, the tire having a function of supplying power to an inner liner of the tire, A power generating layer including a thermoelectric element having a first electrode and a second electrode; A protective layer for adhering and fixing the power generation layer to the inner liner and preventing detachment; The present invention provides a tire capable of self-power generation by using a thermoelectric element including a thermoelectric element.

According to an embodiment of the present invention, the power generation layer may be continuously attached and fixed over the entire surface along the circumferential direction of the inner liner.

According to an embodiment of the present invention, the protective layer may completely cover the entire power generation layer.

According to one embodiment of the present invention, the protective layer is constituted by at least one band patch, the band patch is made of a stretchable material, and a coupling portion which is engaged with the inner surface of the tire, And a pressing portion having a function of coming into close contact with the liner and maintaining the close contact state.

According to an embodiment of the present invention, the band patch may have any one of an elliptical shape, a circular shape, a concave shape, and a rectangular shape, and the coupling portion may be formed at each of both side ends of the band patch.

According to one embodiment of the present invention, the protective layer may be composed of at least one homopolymer selected from the group consisting of ethylene-vinyl acetate copolymer (EVA), synthetic rubber, natural rubber and urethane, or a copolymer of these monomers have.

According to an embodiment of the present invention, the protective layer may be made of the same material as the inner liner.

According to an embodiment of the present invention, the protective layer comprises a viscous material, and the viscous material may be at least one kind selected from the group consisting of a sealant, silicone, an adhesive, .

According to an embodiment of the present invention, the protective layer may be 20 to 120% of the thickness of the inner liner.

According to an embodiment of the present invention, the thermoelectric element includes a first metal and a second metal, and the first metal and the second metal have a wire form, and they may cross each other to form a contact point .

According to an embodiment of the present invention, the first metal and the second metal are made of metals having different thermal conductivities, heat generated at different temperatures in the heat transmitted from the inside of the tire, Power can be generated at the contact point by the temperature difference of the temperature.

Further, the present invention provides a method of manufacturing a tire capable of self-power generation using the thermoelectric device according to the present invention, comprising the steps of: (i) forming a green tire having an inner liner; (ii) forming a power generation layer including a thermoelectric element on the inner liner; (iii) forming a protective layer on the power generation layer; (iv) curing the tire of the step (iii) to integrate the inner surface of the tire with the protective layer; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device.

Further, the present invention provides a method of manufacturing a tire capable of self-power generation using the thermoelectric device according to the present invention, the method comprising the steps of: (a) forming a green tire having an inner liner; (C) vulcanizing the green tire; (C) forming a power generation layer including a thermoelectric element on the inner liner of the tire of the step (b); (D) forming a protective layer on the power generation layer; (E) heating the protective layer so that the protective layer and the inner surface of the tire are combined and integrated; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device.

Further, the present invention provides a method of manufacturing a tire capable of self-power generation using the thermoelectric device according to the present invention, the method comprising the steps of: (a) forming a green tire having an inner liner; (b) a function of keeping the contact state between the inner liner and the power generating layer comprising the thermoelectric element and the engaging portion fixed to the inner surface of the tire, the inner liner being made of a stretchable material on the inner surface of the tire And a pressing portion-tire attachment preventing structure (30) located at a lower portion of the pressing portion to prevent mutual adhesion of the pressing portion and the inner surface of the tire to the surface of the pressing portion; (c) vulcanizing the tire of the step (b) so that the joint portion of the protective layer and the inner surface of the tire are combined and integrated; (d) removing the pressing portion-tire attachment preventing structure; (e) inserting and fixing the power generation layer in a space in which the pressing portion-tire attachment preventing structure is removed; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device.

According to an embodiment of the present invention, before the step (e), the method may further include applying a temporary or permanent fixing adhesive on a part of the power generating layer.

According to an embodiment of the present invention, the pressing portion-tire attachment preventing structure may be made of a high-temperature polymer material which is not melted at the temperature of the vulcanizing step in the step (c).

According to the present invention, there is provided a first effect that a power generation layer can be attached to an inner liner without changing the structure of a tire to generate electric power, the present invention can be applied without modifying a current tire manufacturing facility, The third effect that the power problem can be solved when the sensor is used in the tire due to the continuous self-power generation, the fourth effect that the cost for verifying the additional performance due to the insertion of the power generation element can be reduced, The inner liner is formed below the generation layer to prevent leakage of the air, and since the power generation layer is fixed to the protective layer, it is possible to prevent desorption during tire rotation.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a cross-sectional schematic diagram of a tire capable of self-power generation using a thermoelectric device according to an embodiment of the present invention.
2 is a plan view of a protective layer in the form of a band patch according to an embodiment of the present invention.
3 is a plan view of a protective layer in the form of a band patch having a special shape according to an embodiment of the present invention.
FIGS. 4 to 5 are plan views showing the arrangement of a plurality of band patch-type protective layers according to an embodiment of the present invention. FIG.
6 is a plan view showing a structure of a thermoelectric device according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating application of a film-shaped pressing portion-tire adhesion preventing structure according to an embodiment of a method of manufacturing a tire capable of self-power generation using the thermoelectric element of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" (connected, connected, coupled) with another part, it is not only the case where it is "directly connected" "Is included. Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same reference numerals will be used for the same constituent elements in the drawings, and redundant explanations for the same constituent elements will be omitted.

1 is a cross-sectional schematic diagram of a tire capable of self-power generation using a thermoelectric device according to an embodiment of the present invention. 1, the present invention relates to a tire 1 capable of self-power generation using a thermoelectric element. The tire 1 is mounted on an inner liner 2 of the tire 1, A power generating layer 10 including a thermoelectric element having a function of supplying electric power to the inner liner 2 and a protective layer 20 for preventing detachment of the power generating layer 10, As a main component.

Hereinafter, each component will be described in detail.

In the present invention, the power generation layer 10 functions to supply power to the sensor module in the tire. The power generation layer 10 generates power by self-power generation by rotation of a tire in an automobile without supplying an external power source such as a battery to a sensor module requiring an electric power to supply power to the sensor module semi-permanently.

The sensor module includes at least one sensor element and a substrate on which the sensor element is mounted and receives a signal from an external controller or a communication element and an antenna for transmitting tire inside / . The information collected by the sensor element may include information such as the internal pressure of the tire, the internal temperature, the road surface condition, the degree of wear of each tire portion, the vehicle running condition, and the longitudinal / lateral acceleration of each tire no. The power generation layer 10 can be used not only in the sensor module but also in other devices such as other measurement devices requiring power supply. The power generation layer 10 may be continuously attached and fixed over the entire surface along the circumferential direction of the inner liner 2, and the length or width may vary depending on the amount of power required for the sensor module.

The power generation layer 10 according to the present invention generates electricity using a thermoelectric element. A thermoelectric element is a device that can convert thermal energy into electrical energy. The thermoelectric element generates electricity by applying a seebeck effect in which thermoelectric power is generated by a temperature difference between two different metals.

4 is a plan view showing an arrangement structure of a plurality of band-shaped protective layers 20 according to an embodiment of the present invention. 4, a power generation layer 10 including a thermoelectric element is formed on an inner liner 2 under a protective layer 20, and the thermoelectric element includes a first metal 11 and a second metal 11, And the first metal 11 and the second metal 12 have a wire shape and can cross each other to form the contact 13. [ The first metal (11) and the second metal (12) are made of metals having different thermal conductivities, and generate heat at different temperatures respectively in the heat transmitted from the inside of the tire and have different temperatures The electric power can be generated at the contact 13 by the temperature difference.

Generally, when a tire is subjected to a load, deformation occurs. When the tire runs, it receives a repeated stress and generates heat inside the tire due to hysteresis loss or the like. In other words, when the vehicle is running, the tire receives the force from the ground and moves up and down and rotate. At this time, the semi-finished products inside the tire cause mutual movement and heat is generated inside the tire.

The heat generated inside the tire is transferred to the first metal (11) and the second metal (12) constituting the thermoelectric element and heated to different temperatures by different thermal conductivities, and contacts 13, a thermal current is generated due to a temperature difference between the first metal 11 and the second metal 12. The first metal (11) and the second metal (12) use metals having different thermal conductivities so as to generate a temperature difference, and the types of the metals include platinum-rhodium, platinum-rhodium-platinum, chromel- , And copper-constantan. However, the present invention is not limited thereto, and any metal material known as a metal used for a thermoelectric device may be used in the case where there is a difference in thermal conductivity.

6 is a plan view showing a structure of a thermoelectric device according to an embodiment of the present invention. Referring to FIG. 6, when more power is required to be supplied to the sensor module, the number of the contact points 13 may be changed to increase power generation. As shown in FIG. 6, the number of metal wires intersecting each other may be increased to form the mesh-shaped contacts 13, or may be connected in series to increase the generated voltage or increase the generated current by connecting them in parallel . The bonding form of the first metal 11 and the second metal 12 is not limited thereto and may have a different shape depending on the required power generation.

In addition to the thermoelectric elements, the power generation layer 10 may include a simple voltage stabilizing circuit, a step-up, step-down circuit, and a rectifying circuit since the temperature varies irregularly according to the tire running. It is also noted that other self-generating means such as piezoelectric elements are possible as power generating means in the power generating layer, and are not limited to thermoelectric elements.

The protective layer 20 is a means for attaching and fixing the power generation layer 10 on the inner liner 2 of the tire according to an embodiment of the present invention. And may completely cover the entire power generation layer 10. In the case of a completely covering lid, the power generation layer 10 can be firmly fixed on the inner liner 2, so that the power generation layer 10 can be stably fixed even when the tire is rotated, and can be prevented from being detached. The power generation layer 10 is not in contact with the air inside the tire, so that the power generation efficiency according to the temperature change can be reduced.

The band patch is made of a stretchable material and has an engaging portion 21 to be engaged with an inner surface of the tire and an engaging portion 21 to be engaged with the power generating layer 10 And a pressing portion 22 having a function of coming into close contact with the inner liner 2 and maintaining a close contact state. Referring to FIG. 1, the protective layer 20 may be attached to both ends of the inner liner 2 at the inner surface of the tire to fix the power generation layer 10, but the present invention is not limited thereto. May be attached to both sides of the shoulder portion, and in another embodiment may be attached to both sides of the side wall of the tire to secure the power generating layer 10. It should be noted, however, that the joining position is preferably, but not exclusively, adhered to the shoulder portion to ensure sufficient adhesion reliability of the power generating layer 10 in close contact with the inner surface of the tire.

2 is a plan view of a protective layer 20 in the form of a band patch according to an embodiment of the present invention. Referring to FIG. 2, the band patch may have any one of elliptical, circular, concave, and quadrangular shapes, and the engaging portion 21 may be formed at each of both ends of the band patch. The power generating layer 10 is inserted into the bottom surface of the pressing portion 22 through the side surface of the pressing portion 22 because the pressing portion 22 is formed in the region between the engaging portions 21 .

3 is a plan view of a protective layer 20 in the form of a band patch having a special shape according to an embodiment of the present invention. 3, the shape of the protective layer 20 in the form of a band patch is not limited to the shape of FIG. 2, but may be an "X" shape as shown in FIG. 3 (a) Quot; * "or" + "as shown in FIG.

4 to 5 are plan views showing the arrangement structure of a plurality of band patch type protective layers 20 according to an embodiment of the present invention. Referring to FIG. 4, a plurality of band patches can be fixed to the inner surface of the tire in the form of "- ", and a plurality of band patches fixed at predetermined intervals, The power generation layer 10 including the thermoelectric elements can be attached and fixed continuously. Further, referring to Fig. 5, a plurality of band patches may be fixed to the inner surface of the tire, respectively, in the "X" shape. The above-mentioned "X" shape can be fixed by attaching and fixing a straight band patch as shown in Fig. 5, or by using a band patch of the "X" . At this time, the contact point 13, which is a bonding site of the first metal 11 and the second metal 12, can position the band patch so as to be in contact with the air inside the tire.

The pressurizing portion 22 is formed in a state in which the power generation layer 10 is fixed or in a state before the power generation layer 10 is fixed or after it is fixed The length in the elongated direction in the unfolded state (disengaged state) can be different from each other. The material of the band patch is regarded as an elastic body and has a unique elastic modulus. Shrinking force is generated in proportion to the deformation length in the stretching direction (hook rule) The band patch becomes a source of a downward pressure applied to the upper surface of the power generation layer 10.

In addition, when the elastic modulus of the material of the band patch is large, it may be difficult to install because a large force is required to elongate the band patch, and when the elasticity is small, it may not be possible to install the power generation layer 10 Therefore, the difference between the lengths before and after mounting of the power generation layer 10 should also be considered.

The larger the contact area of the engaging portion 21 with the inner surface of the tire, the greater the bonding force between the inner surface of the tire and the power generation layer 10 It is preferable to set the size of the coupling portion 21 to be large if the size of the pressing portion 22 is large.

The protective layer 20 may be composed of at least one homopolymer selected from the group consisting of ethylene-vinyl acetate (EVA), synthetic rubber, natural rubber and urethane, or a copolymer of these monomers. It goes without saying that materials such as latex can also be applied. The protective layer 20 is basically to be designed so that it can have a certain elasticity. When the protective layer 20 is formed on the inner liner 2, the protective layer 20 can be made of the same material as the inner liner 2, And the inner liner 2 are joined by a vulcanization process, it is possible to maximize mutual bonding without using a separate adhesive. In addition, the protective layer 20 includes a material having a viscosity for adhesion and fixation, and the material having viscosity may be at least one or more kinds selected from the group consisting of a sealant, silicone, an adhesive, .

The protective layer 20 may be 20 to 120% of the thickness of the inner liner 2. Generally, when the thickness of the inner liner 2 of the 16-inch passenger tire is formed to be 1.5 mm, if the thickness is less than 20%, the thickness of the protective layer 20 is too thin, , The occurrence of durability problems such as breakage is likely to occur, and when it is formed in excess of 120%, the mass increase of the portion exceeds the negligible level at the time of attachment or attachment of the power generation layer 10 , A centrifugal force which is not locally uniformized is generated, which may cause problems such as causing uneven wear of the tire.

Hereinafter, a method of manufacturing a tire 1 capable of self-power generation using the thermoelectric device according to the present invention will be described. It is possible to manufacture the tire 1 capable of self-power generation by using the thermoelectric element according to the present invention in three ways, but it is not limited thereto.

As a first method, there are the steps of (i) forming a green tire having an inner liner 2; (ii) forming a power generating layer (10) including a thermoelectric element on the inner liner (2); (iii) forming a protective layer (20) on the power generation layer (10); (iv) vulcanizing the tire of step (iii) to combine the inner surface of the tire with the protective layer (20) and integrate them; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device.

The vulcanizing step is a step of attaching the unvulcanized green tire to the vulcanizing mold and then applying heat and pressure to mold the tire into a predetermined shape and at the same time securing the required physical properties of the tire. It can be used to bond to inner surface. At this time, the protective layer 20 can be made of the same material as the inner liner 2 to maximize the effect of the vulcanization process.

(A) forming a green tire having an inner liner (2); (C) vulcanizing the green tire; (C) forming a power generation layer (10) including a thermoelectric element on the inner liner (2) of the tire of the step (b); (D) forming a protective layer (20) on the power generation layer (10); (E) heating the protective layer 20 so that the protective layer 20 and the inner surface of the tire are combined and integrated; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device. The difference from the first method is that the vulcanization process is performed to form the power generation layer 10 and the protection layer 20 after the tire is formed. However, a separate heating process is required. However, The tire of the present invention can be manufactured without changing the manufacturing process of the tire of the present invention. According to the above method, a viscous material such as a sealant, silicone, adhesive, adhesive polymer, etc. may be used as the material of the protective layer 20 in order to improve adhesion and fixing performance.

(A) forming a green tire having an inner liner 2; (b) a power generating layer (10) made of a stretchable material on the inner surface of the tire and fixed to the inner surface of the tire, a power generating layer (10) including a thermoelectric element is brought into close contact with the inner liner A pressing portion 22 having a function of maintaining a close contact state and a pressing portion 22 located below the pressing portion 22 to prevent the surface of the pressing portion 22 and the inner surface of the tire from adhering to each other, Forming a protective layer (20) comprising a sub-tire adhesion preventive structure (30); (c) vulcanizing the tire of step (b) to join the coupling part (21) of the protective layer (20) and the inner surface of the tire to integrate them; (d) removing the pressing portion-tire attachment preventing structure (30); (e) inserting and fixing the power generation layer (10) in a space from which the pressing portion-tire attachment preventing structure (30) is removed; The present invention provides a method of manufacturing a tire capable of self-power generation using a thermoelectric device. The difference from the above method is that the protective layer 20 is formed first and then the power generation layer 10 is inserted and fixed after the curing process so that there is no risk of deformation of the power generation layer 10 in the curing process, There is an advantage that the power generation layer 10 can be fixed and the detachment can be prevented without using it.

Further, it may further include a step of applying a temporary or permanent fixing adhesive to a part of the power generation layer 10 before the step (e). Adhesive strength of the temporary fixing adhesive does not need to be strong, but when an attempt is made to permanently fix the power generating layer 10 on the inner surface of the tire, an adhesive having high adhesion strength can be applied. When the adhesive is additionally applied as described above, since the adhesive force of the adhesive is further added to the downward pressure provided by the protective layer 20, the mounting reliability of the power generation layer 10 can be increased.

In order to prevent the surface of the pressing portion 22 of the band patch constituting the protective layer 20 from adhering to the inner surface of the tire during the vulcanization process, The tire attachment preventing structure 30 can be positioned. The pressing portion-tire attachment preventing structure 30 is required to be made of a high-temperature polymer material at least whose surface is not melted at the temperature of the vulcanization process.

7 is a schematic cross-sectional view for explaining application of a pressing portion-tire attachment preventing structure 30 in the form of a film according to an embodiment of a method of manufacturing a tire capable of self-power generation using the thermoelectric element of the present invention. 7A, the pressing portion-tire attachment preventing structure 30 may have a thin film shape. In this case, the initial length of the pressing portion 22 in the extension direction is set to a minimum It is preferable that this embodiment is applied to a case where the thickness of the power generation layer 10 to be applied is thin.

7 (b), after the joining of the coupling portion 21 of the protective layer 20 and the inner surface of the tire is completed through the vulcanization process, the pressing portion- It is sufficient that the removal timing is any time before the power generation layer 10 is mounted.

7 (c), a force is applied to the pressing portion 22 to stretch the protective layer 20 in the upward direction, and then, through the side surface of the elongated protective layer 20, (30) is removed and the power generation layer is placed in the generated power generation layer insertion space (31). Next, by removing the stretching force, the protection layer 20 is contracted and the pressing portion 22 applies a downward pressure to the power generation layer 10 while maintaining a close contact state with the inner surface of the tire.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

1: Tire
2: Inner liner
10: power generation layer
11: First metal
12: Second metal
13: Contact point
20: Protective layer
21:
22:
30: Pressurizing portion - Tire attachment preventing structure
31: Power generation layer insertion space

Claims (16)

In a tire capable of self-power generation using a thermoelectric element,
A power generation layer attached to an inner liner of the tire, the power generation layer including a thermoelectric element having a function of supplying power to a sensor module inside the tire;
A protective layer for adhering and fixing the power generation layer to the inner liner and preventing detachment; A tire capable of self-generation by using a thermoelectric element including a thermoelectric element.
The method according to claim 1,
Wherein the power generating layer is attached and fixed continuously over the entire surface along the circumferential direction of the inner liner.
The method according to claim 1,
Wherein the protective layer completely covers the entire power generation layer. ≪ RTI ID = 0.0 > 15. < / RTI >
The method according to claim 1,
Wherein the protective layer is constituted by at least one band patch, the band patch is made of a stretchable material, the engaging portion engaging with the inner surface of the tire, and the power generation layer are brought into close contact with the inner liner, And a pressurizing portion having a function of allowing the thermoelectric element to function.
The method of claim 4,
Wherein the band patch has one of an elliptical shape, a circular shape, a concave shape, and a rectangular shape, and the coupling portion is formed at each of both side ends of the band patch.
The method according to claim 1,
Wherein the protective layer is made of a thermoplastic resin comprising at least one homopolymer selected from the group consisting of ethylene-vinyl acetate (EVA), synthetic rubber, natural rubber and urethane, or a copolymer of these monomers. Tires that can be developed.
The method according to claim 1,
Wherein the protective layer is made of the same material as the inner liner.
The method according to claim 1,
Wherein the protective layer comprises a substance having a viscosity, and the viscous substance is at least one or more selected from the group consisting of a sealant, silicone, and an adhesive polymer. This possible tire.
The method according to claim 1,
Wherein the protective layer is formed to a thickness of 20 to 120% of the thickness of the inner liner.
The method according to claim 1,
Wherein the thermoelectric element comprises a first metal and a second metal, wherein the first metal and the second metal have a wire form and cross each other to form a contact point. This possible tire.
The method of claim 10,
Wherein the first metal and the second metal are made of a metal having a different thermal conductivity from each other and generate heat at a temperature different from each other in the heat transmitted from the inside of the tire, Wherein the thermally conductive member is made of a thermally conductive material.
A method of manufacturing a tire capable of self-power generation using a thermoelectric element according to claim 1,
(i) forming a green tire having an inner liner;
(ii) forming a power generation layer including a thermoelectric element on the inner liner;
(iii) forming a protective layer on the power generation layer;
(iv) curing the tire of the step (iii) to integrate the inner surface of the tire with the protective layer; Wherein the thermoelectric element is made of a thermoplastic resin.
A method of manufacturing a tire capable of self-power generation using a thermoelectric element according to claim 1,
(A) forming a green tire having an inner liner;
(C) vulcanizing the green tire;
(C) forming a power generation layer including a thermoelectric element on the inner liner of the tire of the step (b);
(D) forming a protective layer on the power generation layer;
(E) heating the protective layer so that the protective layer and the inner surface of the tire are combined and integrated; Wherein the thermoelectric element is made of a thermoplastic resin.
A method of manufacturing a tire capable of self-power generation using the thermoelectric element according to claim 4,
(a) forming a green tire having an inner liner;
(b) a function of keeping the contact state between the inner liner and the power generating layer comprising the thermoelectric element and the engaging portion fixed to the inner surface of the tire, the inner liner being made of a stretchable material on the inner surface of the tire Forming a protective layer including a pressurizing portion and a tire attaching prevention structure located below the pressurizing portion so as to prevent a surface of the pressurizing portion and an inner surface of the tire from adhering to each other;
(c) vulcanizing the tire of the step (b) so that the joint portion of the protective layer and the inner surface of the tire are combined and integrated;
(d) removing the pressing portion-tire attachment preventing structure;
(e) inserting and fixing the power generation layer in a space in which the pressing portion-tire attachment preventing structure is removed; Wherein the thermoelectric element is made of a thermoplastic resin.
15. The method of claim 14,
Further comprising the step of applying a temporary or permanent fixing adhesive to a part of the power generation layer prior to the step (e).
15. The method of claim 14,
Wherein the pressurizing portion-tire adhesion preventing structure is made of a high-temperature polymer material which is not melted at the temperature of the vulcanizing step in the step (c).

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