阅读说明：本技术 以螺钉方式固定的轮胎用传感器及适用其的轮胎 (Sensor for tire fixed by screw and tire using the same ) 是由 金正宪 洪昌孝 于 2019-08-13 设计创作，主要内容包括：本发明涉及以螺钉方式固定的轮胎用传感器及适用其的轮胎。更加详细地,涉及如下的以螺钉方式固定的轮胎用传感器及适用其的轮胎,上述以螺钉方式固定的轮胎用传感器的特征在于,包括：传感器模块部,附着于气压轮胎的胎面部的内部面,用于检测轮胎的状态；传感器壳体部,以包围上述传感器模块部的方式形成；以及传感器固定部,包括固定用螺钉,上述固定用螺钉用于使上述传感器壳体部以螺钉方式旋转来固定附着在上述轮胎的胎面部的内部面。(The present invention relates to a sensor for a tire fixed by a screw and a tire to which the sensor is applied. More specifically, the present invention relates to a screw-fixed tire sensor and a tire to which the screw-fixed tire sensor is applied, the screw-fixed tire sensor including: a sensor module unit attached to an inner surface of a tread portion of the pneumatic tire and detecting a state of the tire; a sensor housing portion formed so as to surround the sensor module portion; and a sensor fixing portion including a fixing screw for fixing the sensor housing portion to an inner surface of the tread portion of the tire by rotating the sensor housing portion in a screw manner.)

1. A sensor for a tire fixed by a screw method is characterized in that,

the method comprises the following steps:

a sensor module portion attached to an inner surface of a tread portion of the tire for detecting a state of the tire;

a sensor housing portion formed so as to surround the sensor module portion; and

a sensor fixing portion including a fixing screw for attaching the sensor housing portion to an inner surface of a tread portion of the tire,

the fixing screw is screwed to fix the sensor housing portion to the inner surface of the tread portion of the tire.

2. The sensor for a tire fixed by a screw according to claim 1, wherein a head of the fixing screw is attached to a lower surface of the sensor housing portion.

3. The sensor for a tire fixed by a screw according to claim 1, wherein the sensor housing portion and the fixing screw are integrally formed by inserting a screw head of the fixing screw into the sensor housing portion.

4. The sensor for a tire fixed by a screw according to claim 1, wherein one of an adhesive, an adhesive and a sealant is additionally applied to the lower surface of the sensor housing portion and the surface of the sensor fixing portion.

5. The sensor for a tire fixed by a screw according to claim 1, wherein a screw body of the fixing screw is formed to completely penetrate a tread portion of the tire.

6. Sensor for a tire fixed by means of screws according to claim 5,

the sensor fixing portion further includes an inner screw for screw fixing on an outer surface of the tread portion of the tire,

the screw fixing inner screw is coupled to a screw body portion of the fixing screw protruding through the tread portion.

7. The sensor for a tire fixed by a screw according to claim 1, wherein a screw head of the fixing screw has one of a circular shape, an oval shape, a polygonal shape, a star shape and a zigzag shape to prevent the sensor housing portion and the fixing screw from idling when the fixing screw is inserted into or removed from a tread portion of the tire.

8. The sensor for a tire fixed by a screw according to claim 1, wherein a material of the sensor fixing portion is metal or high-hardness plastic.

9. The sensor for a tire fixed by a screw according to claim 1, wherein the thickness of the fixing screw is 1mm or more and 5mm or less.

10. The sensor for a tire fixed by a screw according to claim 1,

a fixing screw support portion is further included on the inner face of the tread portion of the tire,

the sensor housing portion is fixed to the fixing screw support portion by the fixing screw of the sensor fixing portion after the fixing screw support portion is first attached to the inner surface of the tread of the tire.

11. The sensor for a tire fixed by a screw according to claim 10, wherein two or more fixing screw supporting portions are formed on a side surface of the sensor housing portion.

12. The sensor for a tire fastened by a screw according to claim 10, wherein said fastening screw support portion is attached to an inner surface of a tread portion of said tire by one of an adhesive, an adhesive and a sealant substance.

13. The sensor for a tire screwed according to claim 10, wherein the fixing screw support portion is adhered to an inner surface of a tread portion of the tire by a rubber heat curing process.

14. A tire to which a sensor for tire is applied by screw fastening, the sensor for tire being attached to the inside thereof for detecting a tire condition, wherein the sensor for tire is the sensor for tire fastened by screw according to any one of claims 1 to 13.

Technical Field

The present invention relates to a tire sensor attached to an inner surface of a tire and a tire to which the tire sensor is applied, and more particularly, to a tire sensor having a fixing screw to be fixed to an inner surface of a tire by a screw in order to secure strong attachment durability and a tire to which the tire sensor is applied.

Background

In the upcoming driverless era, the vehicle is not driven directly by the driver, but rather the vehicle is driving on the road by itself. Therefore, it is necessary to directly detect the tire action or the road surface condition occurring while the automobile is running by a sensor other than the driver and provide a warning signal, or to continuously provide information to a vehicle control device and a road regulation system.

Therefore, sensors for detecting temperature, air pressure, acceleration, and the like must be fixed to future tires, but since the tires repeatedly undergo severe deformation and temperature rise during vehicle running, it is difficult to maintain the fixing durability of the sensors fixed to the tires. Therefore, in order to solve this problem, a technique for ensuring sensor attachment durability may become a core technique related to future tires.

In a conventional method for attaching a sensor to the inner surface of a tire, a method for fixing the sensor by applying an adhesive or an adhesive after manufacturing the bottom surface of the sensor in a wide area is mainly used. However, in the case of such an attachment method, the risk of accidental detachment of the sensor is increased due to heat generation and repeated twisting of the tire, and particularly, the problem is more serious when the vehicle is driven at high speed.

When the sensor is detached from the inner face of the tire, not only the function of the sensor itself is lost, but also the inner face of the tire is ground and damage of the inside of the tire occurs due to movement of the detached sensor during acceleration or deceleration of the tire, thereby possibly causing a secondary accident caused by a flat tire or the like. Therefore, a technique of a sensor fixing manner ensuring strong adhesion durability is required to prevent the above-mentioned problems.

U.S. laid-open patent publication No. 2017-001483 (title of the invention: tire sensor device) discloses that a Tire Pressure Monitoring System (TPMS) sensor as a tire air pressure warning device to which an air pressure valve is attached to an inner face of a tire, and discloses a technique of measuring air pressure, acceleration signals by adding a function.

Korean patent laid-open No. 10-1846207 (title of the invention: tire attachment type tire sensor) provides a tire attachment type tire sensor having a compact structure and capable of being directly attached to a tire, and discloses a technology capable of communicating with an external terminal so that tire sensing information can be received through the terminal.

The above patent technology discloses a technology for detecting temperature, air pressure, acceleration, and the like by attaching a tire condition sensor to the inner surface of a tire, but does not disclose a technology for preventing detachment of the sensor by securing the attachment durability of the sensor.

Therefore, in view of the technical importance of sensors for monitoring the state of a tire, which is a necessary control element in the running of a vehicle, and the stability that can be achieved by preventing a secondary accident that may occur due to the detachment of the above-mentioned sensors, the present invention proposes an adhesion sensor technology for a tire having a fixing screw.

Disclosure of Invention

An object of the present invention, which is made to solve the above-mentioned problems, is to provide a tire sensor having a fixing screw capable of improving screw attachment durability by being fixed to a tire inner surface by rotation and by a screw method.

The technical problems to be solved by the present invention are not limited to the above technical problems, and other technical problems not related to the present invention can be clearly understood by those skilled in the art to which the present invention pertains from the following descriptions.

The present invention for achieving the above object provides a sensor for a tire fixed by a screw, comprising: a sensor module portion attached to an inner surface of a tread portion of the tire for detecting a state of the tire; a sensor housing portion formed so as to surround the sensor module portion; and a sensor fixing portion including a fixing screw for attaching the sensor housing portion to an inner surface of a tread portion of the tire, the fixing screw being screwed to fix the sensor housing portion to the inner surface of the tread portion of the tire.

In an embodiment of the present invention, a head of the fixing screw may be attached to a lower surface of the sensor housing portion.

In an embodiment of the present invention, the sensor housing portion and the fixing screw may be integrally formed by inserting a screw head of the fixing screw into the sensor housing portion.

An embodiment of the present invention is characterized in that one of an adhesive, an adhesive and a sealant material may be additionally coated on the lower surface of the sensor housing part and the surface of the sensor fixing part.

In an embodiment of the present invention, a screw body of the fixing screw may be formed to completely penetrate through a tread portion of the tire.

An embodiment of the present invention is characterized in that the sensor fixing portion may further include a screw fixing inner screw on an outer surface of the tread portion of the tire, and the screw fixing inner screw may be coupled to a screw body portion of the fixing screw protruding through the tread portion.

An embodiment of the present invention is characterized in that a head of the fixing screw may have one of a circular shape, an oval shape, a polygonal shape, a star shape, and a zigzag shape to prevent the sensor housing portion and the fixing screw from idling when the fixing screw is inserted into or removed from a tread portion of the tire.

The embodiment of the invention is characterized in that the material of the sensor fixing part can be metal or high-hardness plastic.

In an embodiment of the present invention, the thickness of the fixing screw may be 1mm to 5 mm.

An embodiment of the present invention may further include a fixing screw support portion on an inner surface of the tread portion of the tire, and the sensor housing portion may be fixedly attached to the fixing screw support portion by the fixing screw of the sensor fixing portion after the fixing screw support portion is first attached to the inner surface of the tread portion of the tire.

In an embodiment of the present invention, two or more fixing screw supporting portions are formed on a side surface of the sensor housing portion.

An embodiment of the present invention is characterized in that the fixing screw support portion may be attached to an inner surface of the tread portion of the tire by using one of an adhesive, an adhesive and a sealant substance.

An embodiment of the present invention is characterized in that the fixing screw support portion may be attached to an inner surface of the tread portion of the tire through a rubber heat curing process.

Another configuration of the present invention for achieving the above object is to provide a tire to which a screw-fixed tire sensor is applied, and a tire sensor for detecting a tire condition is attached to the inside, wherein the tire sensor is one of the screw-fixed tire sensors according to the embodiment of the present invention.

The present invention having the above-described configuration has an effect of providing the tire sensor fixed by the screw to secure strong durability of the tire sensor, thereby having a first effect of securing a function of the tire sensor itself and preventing a secondary accident of the vehicle, which may occur due to detachment of the sensor, in advance during traveling of the vehicle.

It is to be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be derived from the structure of the invention described in the detailed description of the invention or the claimed scope of the invention.

Drawings

Fig. 1 is a cross-sectional view of a conventional method of attaching a sensor to the inside of a tire by applying an adhesive or a pressure-sensitive adhesive to the bottom surface of the sensor.

Fig. 2 is a schematic view of a tire sensor attached to an inner surface of a tread portion of a tire according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a tire sensor in which a fixing screw is attached to a lower portion of a sensor housing portion according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a tire sensor in which a fixing screw and a sensor housing portion are integrally formed according to an embodiment of the present invention.

Fig. 5 is a sectional view of a tire sensor in which a screw body of a fixing screw is coupled to a screw fixing inner screw by penetrating a tread portion of a tire according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of a tire sensor in which a sensor housing portion is fixed to a fixing screw support portion according to an embodiment of the present invention.

Fig. 7 is a cross-sectional view of a tire sensor in which a sensor housing portion is fixed and attached by two or more fixing screw support portions according to an embodiment of the present invention.

Description of reference numerals

10: tread portion

20: sidewall portion

30: tyre bead

100: sensor module unit

200: sensor housing part

300: sensor fixing part

310: screw for fixing

311: screw head

312: screw body

320: internal screw for fixing screw

400: fixing screw supporting part

Detailed Description

The present invention will be described below 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 accurately explain the present invention in the drawings, portions that are not related to the description are omitted, and like reference numerals are given to like portions throughout the specification.

Throughout the specification, when it is stated that one portion is "connected (coupled, contacted, combined)" with another portion, this includes a case of "directly connecting" and a case of "indirectly connecting" between the two with other components. When a part "includes" another component, unless otherwise stated, it is not intended to exclude the other component, and may include the other component.

The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless a different meaning is explicitly stated in context, an expression in the singular includes an expression in the plural. In the present specification, the terms "comprises" or "comprising" are used to specify the presence of stated features, integers, steps, actions, structural elements, components, or groups thereof, but are not to be construed as excluding the presence or addition of one or more other features, integers, steps, actions, structural elements, components, or groups thereof.

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

In the future unmanned driving era, it is required to directly detect a tire or road surface condition occurring while an automobile is running by a sensor and control the vehicle and the tire, or to continuously provide information to a road control system.

Therefore, sensors for detecting temperature, air pressure, acceleration, and the like must be fixed to future tires, but since the tires repeatedly undergo severe deformation and temperature rise during vehicle running, there is a problem that the sensors are hardly attached with high durability.

As a conventional sensor attachment method for solving the above-described problem, as shown in fig. 1, a method of fixing a sensor by applying an adhesive or an adhesive after manufacturing a sensor bottom surface in a wide area is used.

However, when the conventional technique is applied, particularly when the vehicle is running at high speed, there is a risk that the sensor may be accidentally detached due to heat generation of the tire, repeated twisting, and the like. In the case where the above-mentioned sensor is detached, not only the function of the sensor itself is lost, but also damage occurs to the inner surface of the tire due to the movement of the detached sensor during acceleration and deceleration of the tire, and a secondary accident caused by a tire burst or the like is caused, and thus it is more problematic.

Therefore, the present invention proposes a tire sensor technology having a fixing screw in order to secure a sensor more firmly and improve durability when the sensor is fixed to the inner surface of a tire.

Fig. 2 to 5 show a state in which a sensor for a tire fixed by a screw according to an embodiment of the present invention is attached to an inner surface of a tread portion 10 of a tire.

As shown in fig. 2, the basic structure of the tire includes: a tread portion 10 that is in direct contact with a road surface; a sidewall portion 20 that protects a carcass corresponding to a framework of the tire and provides a ride feeling to the vehicle; and a bead portion 30 for coupling and fixing the tire to the rim.

The structure of an embodiment of the present invention includes: a sensor module portion 100 attached to an inner surface of the tread portion 10 of the tire and detecting states of the tire and a road surface; a sensor housing 200 formed to surround the sensor module 100 and protecting the sensor module 100; and a sensor fixing portion 300 including a fixing screw 310, and serving to fix the sensor housing portion 200 to an inner surface of the tread portion 10 of the tire by rotating the sensor housing portion in a screw manner.

The fixing screw 310 includes: a screw head 311 for fixing the sensor housing portion 200; and a screw body 312 inserted into the tread portion 10, wherein a screw thread is formed on the screw body 312 so as to be suitable for being inserted into the tread portion 10.

The sensor module part 100 includes a printed circuit board (PCB substrate), a transmitting/receiving antenna, a power supply part, and the like. The sensor module unit 100 measures the air pressure, temperature, and acceleration of the tire, and thus performs data integration and wireless transmission and reception. Also, for supplying energy, an energy supply device may be included or wired with a separate energy supply device.

The sensor module part 100 is directly inserted into each tire corresponding to the front and rear wheels of the vehicle, thereby detecting the air pressure state and temperature change of the tire during driving and integrating information to be visually and audibly provided to the driver.

The thickness of the fixing screw 310 is appropriately determined to prevent the iron wire of the tire reinforcing band portion from being cut off when mounted. The tire reinforcing belt is an element for determining the steering performance and the riding comfort of a vehicle by determining the Grip (Grip) among elements that most affect the tread portion of the tire.

Therefore, in order to prevent the wire of the tire reinforcing band portion from being cut while securing the adhesion durability of the sensor, it is preferable that the thickness of the screw body 312 has a size of 1mm to 5 mm.

However, when the fixing screw 310 is inserted into or removed from the tread portion 10 in order to attach or detach the sensor to or from the inner surface of the tire, there is a possibility that the sensor housing portion 200 and the fixing screw 310 may slip.

In order to solve such a problem, according to an embodiment of the present invention, the shape of the screw head may be made circular, oval, polygonal, star-shaped, saw-toothed, etc. The screw head represents the wide tail of the screw, which differs in configuration and slot.

In this case, even in the process of inserting the fixing screw 310 into the tread portion 10 or removing the fixing screw 310 from the tread portion 10, the coupling force between the sensor housing portion 200 and the fixing screw 310 is increased, and thus the idle rotation can be prevented.

As shown in fig. 3, an embodiment of the present invention is characterized in that the screw head may be attached to the lower surface of the sensor housing portion 200 by using an adhesive or an adhesive.

Alternatively, as shown in fig. 4, in an embodiment of the present invention, the screw head may be inserted into the screw head 311 when the lower portion of the sensor housing portion 200 is manufactured, and the screw head may be injection molded or may be integrally manufactured with the sensor housing portion 200 by molding such as die casting.

Injection molding is a molding method of plastic forming the core of a thermoplastic resin molding method, and is a processing method of manufacturing a molded product by injecting a plastic material melted by heating into a mold and solidifying or hardening the plastic material. The production speed is increased by the compression molding method, and thus mass production can be facilitated.

Die casting is a precision casting method in which molten metal is poured into a forced mold that is accurately machined in such a manner as to completely conform to a desired casting shape to manufacture a mold-by-mold product. It is characterized in that it requires little finishing due to its accurate size and can be mass-produced.

The sensor for a tire according to the present invention may be integrally manufactured by inserting the screw head 311 into the sensor housing 200 by the molding method as described above, thereby enhancing the adhesion and durability of the sensor.

In addition, in an embodiment of the present invention, in order to prevent air from flowing out at a contact surface between the fixing screw 310 and an inner surface of the tread portion of the tire, an adhesive, or a Sealant (Sealant) may be additionally applied to a lower surface of the sensor housing portion 200 and a surface of the fixing screw 310.

The sealant is a rubber-like substance or a high-viscosity liquid rubber composition, and is used in a gap of a joint portion such as a window frame between members to absorb and alleviate expansion, vibration, and deformation of the members in addition to an airtight and watertight function.

When such an adhesive, or a sealant is additionally applied, the effect of enhancing the durability by applying the rotation screw method according to the embodiment of the present invention is obtained, and the effect of further securing the durability of the sensor attachment and fixation can be expected.

As shown in fig. 5, according to an embodiment of the present invention, the fixing screw 310 is formed such that the screw body 312 can completely penetrate the tread portion 10, thereby further improving the adhesion durability of the tire sensor.

In this case, the present invention is characterized in that the sensor fixing portion 300 may further include screw fixing inner screws 320 on an outer surface of the tread portion 10 in order to ensure more reliable adhesion durability. The screw fixing inner screw 320 is coupled to a portion protruding after penetrating the tread portion 10 of the screw body 312.

The fixing screw 310 and the screw-fixing inner screw 320 may be made of metal, and may be made of plastic having high hardness, if not metal.

Unlike the aforementioned embodiment of the present invention, fig. 6 illustrates a sensor for a tire fixed in a screw manner further including a fixing screw support part 400 according to an embodiment of the present invention. In this case, after the fixing screw support part 400 is initially attached to the inner surface of the tread part, the sensor module part 100 and the sensor housing part 200 are fixedly attached to the fixing screw support part 400 by the sensor fixing part 300.

As shown in fig. 7, the number of the fixing screw supporting portions 400 is not limited to one, and may be two or more to further increase the effect of the present invention. As required, the material of the fixing screw support part 400 may be selected from rubber, plastic, metal, and the like.

In the process of attaching the fixing screw support part 400 to the inner surface of the tread part of the tire, it may be bonded with an adhesive, a sealant substance, or the like, or a rubber high temperature curing process (curing) may be used.

The curing step is a step of adding sulfur at a high temperature to cure the rubber. Natural rubber has adhesiveness and deforms in a warm place, and is easily broken in a cold place. However, if the polymer molecules of the rubber are connected by the bridge of the sulfur atom, the rubber is made more rigid, and as the adhesiveness decreases, the resistance and durability also increase.

Thus, the hardened rubber can be applied to various fields, and particularly, can be applied to the sealing of the gap between moving parts, and thus plays a central role in the development of industrial machinery, so that it may be an optimal method of attaching the above-described set screw support portion 400 to the inner face of the tread portion of the tire.

In the case where the sensor is attached through the set screw support part 400 after the attachment thereof, there may be a disadvantage in that the manufacturing process is increased. However, in the case where the sensor is attached by the fixing screw support portion 400, there is an effect that the wire of the tire reinforcing band is not damaged, as compared with the case where the fixing screw 310 is directly inserted into the tread portion.

Another embodiment of the present invention is characterized by having a tire sensor for detecting a tire condition in real time, and the tire sensor may be one of the tire sensors fixed by a screw according to the above-described one embodiment of the present invention.

As described above, when the embodiment of the present invention is applied, unlike the conventional attachment method of the tire inner surface, the tire sensor is fixedly attached to the tire inner surface by the screw method to secure the durability of the sensor fixing attachment, thereby having an effect of preventing detachment of the sensor in advance.

Thus, the tire sensor can stably perform its own function of detecting the tire air pressure and the like, and a secondary accident that may occur due to the detachment of the sensor can be prevented in advance, thereby realizing a technique of providing safety and reliability to the tire to which the sensor is fixed.

The above description of the present invention is intended to be illustrative, and it will be understood that those skilled in the art to which the present invention pertains may easily modify the present invention in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are merely illustrative in all aspects and are not restrictive. For example, each component described as a single type may be dispersed and implemented, and similarly, components described as dispersed may be implemented as a combination.

The scope of the present invention is shown by the claims to be described later, and the meaning and the scope of the claims and all modifications and variations derived from the equivalent concept thereof should be construed as being included in the scope of the present invention.