KR20210115306A - Apparatus for monitoring wear of tire - Google Patents

Abstract

According to an embodiment of the present invention, a device for sensing wear of a tire, comprises: a first body positioned to be inserted into an outer circumferential surface of a tire; a second body inserted into an inner circumferential surface of the tire to correspond to the first body, and connected to the first body; a power supply unit including input and output terminal lines, connected to the second body through the input and output terminal lines, and supplying current to the second body; and a processing unit connected to the input and output terminal lines to measure a wear value including at least one of a current value and a voltage value, and generating an output signal in accordance with the measured wear value. When the outer circumferential surface of the tire is worn, the first body is worn, the processing unit measures the changed wear value and generates an output signal. The first body includes: a first main body; a first sub-body having a cross-sectional area greater than that of the first main body, and positioned on one longitudinal cross-section of the first main body; and a coupling protrusion having a cross-sectional area smaller than that of the first main body, and positioned on the other longitudinal cross-section of the first main body. The second body includes: a second main body; a second sub-body having a cross-sectional area greater than that of the second main body, and positioned on one longitudinal cross-section of the second main body; and a coupling groove concavely formed in the other longitudinal cross-section of the second main body to correspond to the coupling protrusion. The coupling protrusion is inserted and coupled to the coupling groove to connect the first and second bodies. Therefore, the degree of wear of the tire can be more accurately confirmed.

Description

Tire wear detection device {Apparatus for monitoring wear of tire}

The present invention relates to a tire wear detection apparatus, and more particularly, to a tire wear detection apparatus capable of easily detecting a wear level of a tire.

The vehicle is driven by the friction force between the tire mounted on the vehicle and the road. In a tire, a tread is a part in direct contact with the road surface, and may be worn due to friction with the road surface. Such tread wear is recognized as an important factor in tire evaluation because it is directly related to the safety of vehicle occupants.

In general, a groove (also called a groove) is deeply dug in the tread of a tire to improve braking force and driving force. That is, when there is no pattern on the tread of the tire, a lot of slippage occurs and it is dangerous, so that the groove is formed in the tread of the tire, so that the vehicle equipped with the tire can drive safely.

Noise generated when the vehicle is driven and the amount of tread wear may be greatly influenced by the depth and direction of the groove formed in the tread. There are treads having various patterns such as a rib type, a lug type, a block type, and the like depending on the direction in which the groove is formed.

As the tread of the tire wears out as the vehicle travels, the depth of the groove formed in the tread becomes shallower. Eventually, the tread becomes unpatterned, reducing the vehicle's braking power and jeopardizing the safety of the vehicle's occupants.

Conventionally, the driver directly measures the depth of the groove formed in the tread of the tire, and when the depth of the groove decreases, the tire is replaced. Because of this, tire manufacturers have marked a triangle on the sidewall of the tire. In addition, when following the triangle indicated in the direction perpendicular to the circumference of the tire, a part of the groove has a protruding part, and the driver returns to the time of tire replacement when the height of the protruding part and the tread height without the groove are the same. could judge

However, as described above, in order to check how much the tread of the tire is worn, the driver has the inconvenience of having to check the tread of the tire with the naked eye, and there is a problem that it cannot be checked directly while the vehicle is driving.

An object of the tire wear detection apparatus according to the technical idea of the present invention is to provide a tire wear detection apparatus capable of detecting a wear state of a tire without visually checking the tire.

Another object of the present invention is to provide a tire wear detection device that can more accurately check the degree of wear of a tire.

Another object of the present invention is to provide a tire wear detection device that can be easily installed on a tire and can be easily separated from a tire.

The technical problems to be achieved by the tire wear detection device according to the technical spirit of the present invention are not limited to the above-mentioned tasks, and another task not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided an apparatus for detecting tire wear, comprising: a first body positioned to be inserted into an outer circumferential surface of a tire; a second body inserted into the inner circumferential surface of the tire to correspond to the first body and connected to the first body; a power supply including an input line and an output line, connected to the second body through the input line and the output line, and supplying a current to the second body; and a processing unit connected to the input line and the output line to measure a wear value including at least one of a current value and a voltage value, and generate an output signal according to the measured wear value, wherein when the outer peripheral surface of the tire is worn , the first body is worn, the processing unit measures the changing wear value and generates an output signal, the first body comprising: a first main body; a first sub-body having a cross-sectional area greater than the cross-sectional area of the first main body and positioned on one cross-section of the first main body; and a coupling protrusion having a cross-sectional area smaller than that of the first main body and positioned on the other longitudinal cross-section of the first main body, wherein the second body includes: a second main body; a second sub-body having a cross-sectional area greater than the cross-sectional area of the second main body and positioned on one cross-section of the second main body; and a coupling groove concavely formed in the other longitudinal cross-section of the second main body to correspond to the coupling protrusion, wherein the coupling protrusion is inserted and coupled to the coupling groove, whereby the first body and the second body are connected. have.

Also, the first main body and the coupling protrusion may have a cylindrical shape, and the second main body may have a cylindrical shape.

In addition, a screw thread is formed on the outer circumferential surface of the coupling protrusion, a screw thread is formed on the inner circumferential surface of the coupling groove, and the coupling protrusion may be inserted into the coupling groove to be screwed.

In addition, the first body and the second body are non-conductive, and the second body is made in the form of a wire, is located around the coupling groove in the second main body, and both ends are connected to the input terminal line and the output terminal line, respectively, A connection line is included so that at least one point is adjacent to the other longitudinal end surface of the second main body, but as the outer peripheral surface of the tire is worn, the first body and the second body are worn, the connection line is disconnected, and the connection line is disconnected , the processor may generate an output signal according to the measured current value.

In addition, the first body and the second body are non-conductive, and the first body is made in the form of an electric wire, and is located around the coupling protrusion in the first main body, and both ends correspond to the other longitudinal cross-sections of the first main body. One first connection line is included, and the second body is in the form of an electric wire, is located around the coupling groove in the second main body, and each end is connected to the input terminal line and the output terminal line, and each The other end includes a pair of second connection lines corresponding to the second end surface of the second main body, and the second end surface of the first main body is made of an elastic conductor along the periphery of the coupling protrusion and is connected to the first connection line A first connecting body is located, and a second connecting body made of an elastic conductor and connected to the second connecting line is located on the other longitudinal end surface of the second main body along the coupling groove, and the coupling protrusion is inserted into the coupling groove, When the first connecting body and the second connecting body are coupled and contacted with each other, the first connecting line is connected to the second connecting line, and as the outer circumferential surface of the tire is worn, the first body is worn and the first connecting line is disconnected and when the first connection line is disconnected, the processing unit may generate an output signal according to the measured voltage value.

In addition, a conical insertion protrusion may be convexly formed on the longitudinal cross-section of the engaging protrusion, and an insertion groove of a shape corresponding to the insertion protrusion may be concavely formed on an inner longitudinal sectional surface of the engaging groove.

In addition, the first body and the second body are made of a conductor, and the end of the input end line and the end of the output end line face each other and are connected to the side surface of the second body, and the outer peripheral surface of the tire is worn, so that the first body and the second body 2 When the body is worn, the processing unit may measure a reduced voltage value to calculate a wear rate of the tire.

In addition, the processor may be connected to the vehicle to transmit an output signal to the vehicle, and at least one of a sound, text, and image according to the output signal may be output to the vehicle.

In addition, the processing unit is connected to the output line and the power supply, the current measurement unit for measuring the current value of the output line; a voltage measuring unit connected to the input line and the output line and measuring a voltage value between the input line and the output line; and a processing body connected to the current measuring unit and the voltage measuring unit, generating an output signal according to at least one of a current value measured by the current measuring unit and a voltage value measured by the voltage measuring unit, and transmitting the output signal to the vehicle. can

The tire wear detection apparatus according to the embodiments according to the technical spirit of the present invention has the following effects.

(1) The wear condition of the tire can be detected without visually checking the tire.

(2) The wear level of the tire can be checked more accurately.

(3) The tire wear detection device can be easily installed on the tire and can be easily detached from the tire.

However, effects that can be achieved by the device for detecting tire wear according to an embodiment of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. will be able

In order to more fully understand the drawings cited herein, a brief description of each drawing is provided.
1 is a perspective view illustrating a tire wear detection device according to an embodiment of the present invention.
2 is a diagram illustrating a state in which the tire wear detection device according to an embodiment of the present invention is installed on a tire mounted on a vehicle.
3 is a view illustrating various states in which a tire wear detection device according to an embodiment of the present invention is installed on a tire.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail through the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that the present invention includes all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, numbers (eg, first, second, etc.) used in the description process of the present specification are only identifiers for distinguishing one component from other components.

In addition, in this specification, when a component is referred to as "connected" or "connected" with another component, the component may be directly connected or directly connected to the other component, but in particular It should be understood that, unless there is a description to the contrary, it may be connected or connected through another element in the middle.

In addition, in the present specification, two or more components may be combined into one component, or one component may be divided into two or more for each more subdivided function. In addition, each of the components to be described below may additionally perform some or all of the functions of other components in addition to the main functions that each component is responsible for, and some of the main functions of each of the components are different It goes without saying that it may be performed exclusively by the component.

Hereinafter, embodiments according to the technical spirit of the present invention will be described in detail in turn.

1 is a perspective view illustrating a tire wear detection device according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a state in which the tire wear detection device according to an embodiment of the present invention is installed on a tire mounted on a vehicle. , FIG. 3 is a view illustrating various aspects of a tire wear detection device installed on a tire according to an embodiment of the present invention.

1 to 3 , the tire wear detection device 100 according to an embodiment of the present invention includes a first body 101 , a second body 102 , a power supply unit 103 , and a processing unit 104 . is installed on a tread 11 forming an outer circumferential surface of the tire 10 mounted on the vehicle 1 , and detects and senses wear of the outer circumferential surface of the tread 11 in the tire 10 . It can be used to provide the vehicle 1 with a worn state of the outer peripheral surface of the worn tread 11 . Here, the tread 11 is a portion of the tire 10 in direct contact with the road surface, is a rubber layer, and may have relatively good wear resistance. In addition, the tire wear detection apparatus 100 of the present embodiment may be provided in plurality, and may be spaced apart from each other in the width direction of the tread 11 .

The first body 101 is positioned to be inserted into the outer circumferential surface of the tire 10 . Here, the outer circumferential surface of the tire 10 means a portion of the tread 11 that is exposed to the outside and faces the road surface, and in particular, may have a protruding area 11a formed to be spaced apart so as to be in direct contact with the road surface. have. Also, the first body 101 may include a first main body 111 , a first sub-body 113 , and a coupling protrusion 115 .

The first main body 111 has a cylindrical shape.

The first sub-body 113 is formed in a circular plate shape, and is located in one cross-section of the first main body 111 . Here, the outer diameter of the first sub-body 113 may be larger than the outer diameter of the first main body 111 .

The coupling protrusion 115 is formed in a cylindrical shape, and is located in the center of the other longitudinal cross-section of the first main body 111 . Here, a thread is formed on the outer circumferential surface of the coupling protrusion 115 , and the outer diameter of the coupling protrusion 115 may be smaller than the outer diameter of the first main body 111 .

In the first body 101 as described above, the coupling protrusion 115 may be inserted into the outer circumferential surface of the tire 10 . The coupling protrusion 115 and the first main body 111 are gradually inserted into the outer circumferential surface of the tire 10 so that the first sub-body 113 is in contact with the outer circumferential surface of the tire 10 and is on the outer circumferential surface of the tire 10 . can be located. The coupling protrusion 115 and the first main body 111 may be inserted into the outer circumferential surface of the tire 10 until the first sub-body 113 is positioned on the outer circumferential surface of the tire 10 . Here, the first body 101 may be positioned to correspond to the protruding region 11a on the outer circumferential surface of the tire 10 as shown, but is not limited thereto and may be positioned between the protruding regions 11a.

The second body 102 may be inserted and positioned on the inner circumferential surface of the tire 10 , and may be connected to the first body 101 . Here, the inner circumferential surface of the tire 10 means a portion of the tire 10 that is located opposite to the outer circumferential surface of the tire 10 and is not exposed to the outside in the tread 11 . In addition, the second body 102 may include a second main body 121 , a second sub body 123 , and a coupling groove 125 .

The second main body 121 may have a cylindrical shape and may have the same outer diameter as the outer diameter of the first main body 111 .

The second sub-body 123 is formed in a circular plate shape, and is located on one cross-section of the second main body 121 . Here, the outer diameter of the second sub-body 123 may be greater than the outer diameter of the second main body 121 .

The coupling groove 125 is concavely formed in the center of the other longitudinal cross-section of the second main body 121 to correspond to the coupling protrusion 115 . Here, a thread is formed on the inner circumferential surface of the coupling groove 125 , and the inner diameter of the coupling groove 125 may correspond to the outer diameter of the coupling protrusion 115 . For this reason, the coupling protrusion 115 may be inserted into the coupling groove 125 to be screwed into the coupling groove 125 . When the coupling protrusion 115 is completely inserted into the coupling groove 125 , the other longitudinal end face of the first main body 111 and the other longitudinal end face of the second main body 121 may be in contact.

In the second body 102 as described above, the second main body 121 may be inserted into the inner circumferential surface of the tire 10 . Here, the second main body 121 may be positioned to correspond to the first main body 111 inserted into the outer circumferential surface of the tire 10 . As the second main body 121 is inserted into the inner circumferential surface of the tire 10 , the coupling protrusion 115 and the coupling groove 125 may be screwed together. The second sub-body 123 may be positioned on the inner circumferential surface of the tire 10 by being in contact with the inner circumferential surface of the tire 10 . The second main body 121 may be inserted into the inner circumferential surface of the tire 10 until the second sub body 123 is positioned on the inner circumferential surface of the tire 10 . Also, the second main body 121 may be connected to the first main body 111 . That is, when the coupling protrusion 115 is screwed into the coupling groove 125 and completely inserted, the other longitudinal end face of the second main body 121 may be in contact with the other longitudinal end face of the first main body 111 , and the first The sub-body 113 and the second sub-body 123 may be in contact with the outer peripheral surface and the inner peripheral surface of the tire 10 , respectively. Accordingly, the first body 101 and the second body 102 may be coupled to each other to be fixed to the tire 10 and maintained in an installed state.

On the other hand, a conical insertion protrusion 115a may be convexly formed on the longitudinal cross-section of the engaging protrusion 115, and an insertion groove 125a having a shape corresponding to the inserting protrusion 115a on the inner longitudinal sectional surface of the engaging groove 125. This can be formed concave (see Fig. 3(c)). Since the insertion protrusion 115a has a pointed shape, the first body 101 may be more easily inserted into and installed on the outer circumferential surface of the tire 10 .

When the first body 101 is positioned so as to correspond to the protruding area 11a on the outer circumferential surface of the tire 10, the second body 102 is located in the protruding area of the outer circumferential surface of the tire 10 from the inner circumferential surface of the tire 10 ( 11a). Further, when the first body 101 is positioned between the protruding areas 11a on the outer circumferential surface of the tire 10 , the second body 102 is positioned between the protruding areas 11a on the inner circumferential surface of the tire 10 . may be positioned to correspond.

Meanwhile, although the first body 101 and the second body 102 of the present embodiment are illustrated in a cylindrical shape, they are not limited thereto and may be formed in various shapes. In addition, the first body 101 and the second body 102 of this embodiment are shown to be coupled to each other through the screw coupling of the coupling protrusion 115 and the coupling groove 125, but the coupling protrusion 115 and The coupling groove 125 may be coupled to each other in various known coupling methods as well as screw coupling.

The power supply unit 103 may be connected to the second body 102 to supply current. Here, the current may be supplied to the second body 102 , and may also be supplied to the first body 101 . That is, the power supply unit 103 may be combined with the first body 101 and the second body 102 to form a circuit. In some cases, the power supply unit 103 may be connected to the battery of the vehicle 1 to store electricity.

Also, the power supply unit 103 may include an input terminal line 131 and an output terminal line 133 .

The input terminal line 131 connects the power source 103 and the second body 102 . Here, the input terminal line 131 is connected to the (+) pole of the power supply unit 103 . Current may flow from the power supply unit 103 to the second body 102 through the input terminal line 131 .

The output terminal line 133 is spaced apart from the input terminal line 131 , and connects the power supply unit 103 and the second body 102 . Here, the output terminal line 133 is connected to the (-) pole of the power supply unit 103 . Current may flow from the second body 102 to the power supply unit 103 through the output terminal line 133 .

Meanwhile, the first body 101 and the second body 102 may be configured as follows for the flow of current supplied from the power supply unit 103 .

First, the first body 101 and the second body 102 may be made of a non-conductor through which current does not flow, and the inside of the second main body 121 of the second body 102 is formed around the coupling groove 125 . A connection line 120 may be located (see FIGS. 3(a) and 3(c) ). Meanwhile, the connection line 120 may be located on the outer circumferential surface of the second main body 121 .

The connection line 120 is made in the form of a wire, and both ends may be connected to the input terminal line 131 and the output terminal line 133 of the power supply unit 103 , respectively. At least one point of the connection line 120 may be located adjacent to the other longitudinal cross-section of the second main body 121 , and may be located in the protruding area 11a of the outer circumferential surface of the tire 10 .

The outer peripheral surface of the tire 10, in particular, the protruding region 11a may be in contact with the road surface and may be preferentially worn. According to the wear of the outer peripheral surface of the tire 10 , the first body 101 and the second body 102 may be sequentially worn. In particular, when the first main body 111 is worn and the second main body 121 begins to wear, the protruding area 11a of the outer peripheral surface of the tire 10 may be in a substantially worn state. This may be a dangerous state in the operation of the vehicle 1 or a state requiring replacement of the tire 10 . Here, the second main body 121 is worn and the connection line 120 may be worn and disconnected. When the connection line 120 is disconnected, the current by the power supply unit 103 may not flow in the connection line 120 .

Also, the first body 101 and the second body 102 may be formed of an insulator through which current does not flow. Inside the first main body 111 of the first body 101, the first connection line 120a is positioned around the coupling protrusion 115, and the second main body 121 of the second body 102 is Therein, a second connection line 120b may be positioned around the coupling groove 125 (see FIG. 3(b)). Meanwhile, the first connection line 120a may be positioned on the outer peripheral surface of the first main body 111 , and the second connection line 120b may be positioned on the outer peripheral surface of the second main body 121 . Also, the length of the first main body 111 may correspond to the height of the protruding region 11a on the outer circumferential surface of the tire 10 .

The first connection line 120a is made in the form of an electric wire, and is positioned adjacent to the other longitudinal end face of the first main body 111, and both ends may be exposed through the other longitudinal end face of the first main body 111. . In addition, on the other longitudinal end surface of the first main body 111, a first connector 120a' is positioned along the periphery of the coupling protrusion 115, and the first connector 120a' is made of a conductor made of an elastic material. 1 may be connected to the connection line 120a.

The second connection line 120b is formed in a pair, and each is formed in the form of an electric wire. At least one of the second connection lines 120b is connected to the input terminal line 131 and may be exposed from the other end surface of the second main body 121 , and the other of the second connection lines 120b is the output terminal line 133 . ) and may be exposed from the other longitudinal cross-section of the second main body 121 . In addition, the second connecting body 120b' is positioned along the circumference of the coupling groove 125 on the other longitudinal section of the second main body 121, and the second connecting body 120b' is made of an elastic conductor and 2 may be connected to the connection line 120b.

When the coupling protrusion 115 is completely inserted into the coupling groove 125 , the first coupling body 120a ′ and the second coupling body 120b′ can be compressed by contacting each other, and the second main body 121 . It is possible to seal between the other longitudinal cross-section of and the other longitudinal cross-section of the first main body 111 . Here, both ends of the first connection line 120a are in contact with the connection body 120a' and the ends of the second connection line 120b are in contact with the second connection body 120b', and the first connection line 120a ) may be respectively connected to both ends of the second connection line 120b.

The outer peripheral surface of the tire 10, in particular, the protruding region 11a may be in contact with the road surface and may be preferentially worn. The first body 101 may be worn according to the wear of the outer peripheral surface of the tire 10 . In particular, when the first main body 111 is substantially worn, the protruding region 11a on the outer circumferential surface of the tire 10 may be in a substantially worn state. This may be a dangerous state in the operation of the vehicle 1 or a state requiring replacement of the tire 10 . Here, the first connection line 120a may be worn and disconnected due to the wear of the first main body 111 . When the first connection line 120a is disconnected, the current by the power source 103 may flow only through the second connection line 120b and the second connection body 120b.

In addition, the first body 101 and the second body 102 may be made of a conductor through which an electric current can flow (refer to Fig. 3(d)). Here, the input terminal line 131 and the output terminal line 133 of the power supply unit 103 may be connected to the side surface of the second body 102 so that their longitudinal cross-sections face each other. When the power supply unit 103 is combined with the first body 101 and the second body 102 to form a circuit, the first body 101 and the second body 102 may function as a resistor. On the other hand, the first main body 111 and the first sub-body 113 in the first body 101 and the second main body 121 and the second sub-body 123 in the second body 102 are made of an insulating material can be covered with

The outer peripheral surface of the tire 10, in particular, the protruding region 11a may be in contact with the road surface and may be preferentially worn. According to the wear of the outer peripheral surface of the tire 10 , the first body 101 and the second body 102 may be sequentially worn. The first body 101 and the second body 102 may have a resistance value that decreases as they wear. Here, the length of the first main body 111 may correspond to the height of the protruding area 11a on the outer circumferential surface of the tire 10 .

The processing unit 104 is connected to the input terminal line 131 and the output terminal line 133 of the power supply unit 103 to measure a wear value including at least one of a current value and a voltage value, and output according to the measured wear value signal can be generated. Here, the processing unit 104 may include a current measurement unit 141 , a voltage measurement unit 143 , and a processing body unit 145 .

The current measuring unit 141 is connected to the power supply unit 103 and the output line 133 , and may measure a current value of the output line 133 .

The voltage measuring unit 143 may be connected to the input line 131 and the output line 133 and measure a voltage value between the input line 131 and the output line 133 .

The processing body 145 is connected to the current measurement unit 141 and the voltage measurement unit 143 , and among the current value measured by the current measurement unit 141 and the voltage value measured by the voltage measurement unit 143 , It is possible to generate an output signal according to at least one.

For example, when the first body 101 and the second body 102 are positioned on the tire 10 , and the power source 103 supplies current to the second body 102 , the current measurement unit 141 is A constant current value can be measured. As mentioned above, as the first body 101 and the second body 102 are worn by the abrasion of the protruding region 11a of the outer circumferential surface of the tire 10, the connection line 120 is disconnected, or the One connection line 120a may be disconnected. This may be a state in which the protruding region 11a is almost worn, that is, a state in which the vehicle 1 is in a dangerous state or the tire 10 needs to be replaced. Here, current does not flow in the connection line 120 , so the current measuring unit 141 may measure a current value of 0A, and the processing body 145 may generate an output signal (FIG. 3(a)). ) and Fig. 3(c)). In addition, since no current flows in the first connection line 120a, the voltage measuring unit 143 may measure a changed voltage value, particularly a reduced voltage value, and the processing body 145 may generate an output signal. can be (see Fig. 3(b))

In addition, the output signal may be transmitted to the vehicle 1 and output in the form of sound, text, image, or the like. The output sound, text, image, etc. may include a meaning of a dangerous state in driving of the vehicle 1 or a state requiring replacement of a tire. For example, sound may be output through a speaker of the vehicle, and text and images may be output through an instrument panel of the vehicle. The vehicle occupant may recognize the wear state of the tire 10 through sound, text, and image and replace the tire 10 .

In addition, in the tire wear detection device 100 shown in FIGS. 3A and 3C , the worn second body 102 and the connection line 120 are separated from the tire 10 after being repaired. It can be applied to the new tire 10 in combination with the new first body 101 . In particular, in the tire wear detection device 100 shown in FIG. 3B , the second body 102 that is not worn is separated from the tire 10 and combined with the new first body 101 to form a new tire 10 . can be applied to That is, the tire wear detection device 100 of the present embodiment may be reused.

In addition, the first body 101 and the second body 102 are made of a conductor, and when acting as a resistance to the power supply unit 103 , the first body 101 and the second body 102 are abraded by the outer peripheral surface of the tire 10 . 2 The body 102 is subject to wear. The first body 101 and the second body 102 may exhibit a reduced resistance value (refer to FIG. 3(d)).

The voltage measuring unit 143 may measure a gradually decreasing voltage value, and the processing body unit 145 is based on the voltage value measured by the voltage measuring unit 143 in the first body 101 and the second body. The wear rate of the tire 10 corresponding to the wear of 102 may be calculated. For example, the wear rate of the tire 10 is obtained by subtracting the current measured voltage value from the basic voltage value measured by the voltage measurement unit 143 , and the threshold voltage is obtained by subtracting the current measured voltage value from the basic voltage value measured by the voltage measurement unit 143 . It can be calculated from a value divided by a value minus a value.

Here, the basic voltage value is applied to the voltage measuring unit 143 in a state in which the tire wear detection device 100 of this embodiment is installed in the protruding area 11a of the tread 11 and the protruding area 11a is not worn. means a voltage value measured by In the state, it means a voltage value measured by the voltage measuring unit 143 . Also, when the first body 101 is in an almost worn state, a threshold voltage value may be measured. That is, the wear rate of the tire 10 may indicate the degree of wear of the tire 10 in preparation for a dangerous state or a state requiring replacement of the tire 10 in the operation of the vehicle 1 .

On the other hand, the processing body 145 generates an output signal corresponding to the wear rate of the tire 10 to display the wear rate of the tire 10 on the vehicle 1 (eg, an instrument panel, etc.) through the output signal. can make it happen Also, when the voltage measuring unit 143 measures a voltage value corresponding to the threshold voltage value, the processing body unit 145 may generate an output signal. The output signal may be transmitted to the vehicle 1 and output in the form of sound, text, image, or the like. The output sound, text, image, etc. includes the meaning that the vehicle 1 is in a dangerous state or a tire replacement is required. In addition, the sound may be output through a speaker of the vehicle, and text and images may be output through the instrument panel of the vehicle. The vehicle occupant may recognize the wear state of the tire 10 through sound, text, and image and replace the tire 10 .

On the other hand, when the length of the first main body 111 corresponds to the height of the protruding region 11a on the outer circumferential surface of the tire 10 , when the voltage measuring unit 143 measures the voltage value corresponding to the threshold voltage value , the second body 102 may not be worn. Here, when the tire 10 is replaced, the non-wearing second body 102 may be separated from the tire 10 and applied to the replaced tire 10 in combination with the new first body 101 . That is, the tire wear detection device 100 of the present embodiment may be reused.

3, the first body 101 is installed on the outer peripheral surface of the tire 10 so as to correspond to the protruding region 11a and is connected to the second body 102 installed on the inner peripheral surface of the tire 10, The present invention is not limited thereto, and the first body 101 may be installed on the outer peripheral surface of the tire 10 between the protruding regions 11a and may be connected to the second body 102 installed on the inner peripheral surface of the tire 10 . That is, the first body 101 may be installed anywhere on the outer peripheral surface of the tire 10 .

In the tire wear detection device 100 of this embodiment, the first body 101 and the second body 102 are inserted into the outer and inner circumferential surfaces of the tire 10 in the tire 10, and are screwed to each other to be connected to each other. have. Here, the first body 101 and the second body 102 may be installed in a fixed state to the tire 10 . In addition, the power supply unit 103 is connected to the second body 102 to form a circuit in combination with the first body 101 and the second body 102, and the processing unit 104 is the current value and voltage in the circuit. At least one of the values may be measured as a wear value. For example, when the first body 101 and the second body 102 are worn while the outer peripheral surface of the tire 10 is worn, for example, the protruding region 11a is worn, the processing unit 104 is At least one of a changing current value and a voltage value is measured, and an output signal is generated accordingly. The output signal is output in the form of a wear rate of the tire in the vehicle 1 , and the wear state of the tire 10 is also output in the form of sound, text, or image. Accordingly, the tire wear detection apparatus 100 of the present embodiment can detect the wear of the tire 10 inside the vehicle 1 without visually checking the tire 10 , and the degree of wear of the tire 10 . can be checked.

In addition, the tire wear detection device 100 of this embodiment can be installed on the tire 10 by inserting the first body 101 and the second body 102 into the outer and inner peripheral surfaces of the tire 10 and connecting them to each other. have. Here, the first body 101 and the second body 102 may be screwed to the tire 10 . In addition, a drilling operation of forming a hole having an inner diameter equal to or less than the outer diameter of the first body 101 may be performed in the tread 11 of the tire 10, and the drilling operation may be performed from the outer peripheral surface of the tire 10 to the inner peripheral surface. It may be made to be possible. For this reason, the tire wear detection device 100 of the present embodiment can be easily installed on the tire 10 and can be easily separated from the tire 10 , so that the tire 10 can be easily installed in a state in which the tire 10 is manufactured. 10) can be installed.

In the above, the technical idea of the present invention has been described in detail with reference to preferred embodiments, but the technical idea of the present invention is not limited to the above embodiments, and those of ordinary skill in the art within the scope of the technical spirit of the present invention Various modifications and changes are possible by the person.

100: tire wear detection device
101: first body
102: second body
103: power supply
104: processing unit

Claims (9)

a first body inserted and positioned on the outer circumferential surface of the tire;
a second body inserted into the inner circumferential surface of the tire to correspond to the first body and connected to the first body;
a power supply including an input line and an output line, connected to the second body through the input line and the output line, and supplying a current to the second body; and
A processing unit connected to the input line and the output line, measuring a wear value including at least one of a current value and a voltage value, and generating an output signal according to the measured wear value,
When the outer peripheral surface of the tire is worn, the first body is worn, and the processing unit measures the changing wear value and generates an output signal,
The first body is
a first main body;
a first sub-body having a cross-sectional area greater than the cross-sectional area of the first main body and positioned on one cross-section of the first main body; and
It has a cross-sectional area smaller than the cross-sectional area of the first main body and includes a coupling protrusion located on the other longitudinal cross-section of the first main body,
The second body is
a second main body;
a second sub-body having a cross-sectional area greater than the cross-sectional area of the second main body and positioned on one cross-section of the second main body; and
and a coupling groove concavely formed in the other longitudinal cross-section of the second main body to correspond to the coupling protrusion,
A tire wear detecting device, characterized in that the coupling protrusion is inserted into the coupling groove and coupled, so that the first body and the second body are connected.
According to claim 1,
The first main body and the coupling protrusion are formed in a cylindrical shape,
The tire wear detection device, characterized in that the second main body is formed in a cylindrical shape.
3. The method of claim 2,
A screw thread is formed on the outer circumferential surface of the coupling protrusion, and a screw thread is formed on the inner circumferential surface of the coupling groove,
A tire wear detection device, characterized in that the coupling protrusion is inserted into the coupling groove and screwed together.
According to claim 1,
The first body and the second body are non-conductive,
The second body is
It is made in the form of an electric wire, is located around the coupling groove in the second main body, both ends are connected to the input end line and the output end line, respectively, and includes a connection line such that at least one point is adjacent to the other end surface of the second main body but,
As the outer circumferential surface of the tire is worn, the first body and the second body are worn and the connection line is disconnected,
When the connection line is disconnected, the processing unit generates an output signal according to the measured current value.
According to claim 1,
The first body and the second body are non-conductive,
The first body is
Doedoe in the form of an electric wire, it is located around the coupling protrusion in the first main body, and both ends include one first connection line corresponding to the other longitudinal cross-section of the first main body,
The second body is
A pair made in the form of an electric wire, positioned around the coupling groove in the second main body, each end connected to the input end line and the output end line, and each other end corresponding to the other end surface of the second main body a second connection line of
On the other longitudinal cross-section of the first main body, a first connector made of an elastic conductor and connected to the first connection line is located along the periphery of the coupling protrusion. A second connecting body made of a conductor and connected to a second connecting line is located,
When the coupling protrusion is inserted into the coupling groove and coupled so that the first coupling body and the second coupling body are in contact with each other, the first coupling line is connected to the second coupling line,
As the outer peripheral surface of the tire is worn, the first body is worn and the first connection line is disconnected,
When the first connection line is disconnected, the processing unit generates an output signal according to the measured voltage value.
According to claim 1,
A tire wear detecting device, characterized in that a conical insertion protrusion is convexly formed on a longitudinal section of the coupling protrusion, and an insertion groove of a shape corresponding to the insertion protrusion is concavely formed on an inner longitudinal section of the coupling groove.
According to claim 1,
The first body and the second body are made of a conductor, and the end of the input line and the end of the output line are connected to the side of the second body while facing each other,
When the outer peripheral surface of the tire is worn and the first body and the second body are worn, the processing unit measures the reduced voltage value to calculate the wear rate of the tire.
According to claim 1,
The processing unit is connected to the vehicle and transmits an output signal to the vehicle,
Tire wear detection device, characterized in that at least one of a sound, text, and image according to the output signal is output to the vehicle.
According to claim 1, wherein the processing unit,
a current measuring unit connected to the output line and the power source and measuring a current value of the output line;
a voltage measuring unit connected to the input line and the output line and measuring a voltage value between the input line and the output line; and
a processing body connected to the current measuring unit and the voltage measuring unit, generating an output signal according to at least one of a current value measured by the current measuring unit and a voltage value measured by the voltage measuring unit, and transmitting the output signal to the vehicle Tire wear detection device.

Images