KR101978713B1 - Pneumatic tire for having sound generating portion capable of wear indicator - Google Patents

Abstract

The present invention relates to a vehicle tire provided with a sound generating unit informing a wear limit and, more specifically, to a vehicle tire configured to be provided with a pneumatic tire; a wear limit display protrusion unit protruding to be spaced at a regular interval within a groove of the tire; and a sound generation unit enabling a driver to recognize the wear limit within groove by sound, wherein the sound generation unit includes; a sound inducing chamber formed within the wear limit display protrusion unit to be capable of generating sound when the tire is worn and exposed; and a cap for the chamber formed at an upper end of the sound inducing chamber to seal the upper end. The present invention generates any sound or noise by the sound generation unit when the wear of the tire reaches a set limit, thereby enabling the driver to quickly and conveniently recognize a state that the tire reaches the wear limit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tire for a vehicle,

More particularly, the present invention relates to a tire for a vehicle having a wear detection limit, and more particularly to a tire for a vehicle which is capable of generating a specific sound and a noise by a sound generating part when wear of a tire reaches a certain limit, And a wearer who is aware of the wear limit of the tire.

In general, tires that disclose abrasion limits of tires are already widely disclosed, and a detailed description thereof will be omitted. The tires disclosed in Japanese Patent Laid-Open No. 10-2010-3893 entitled "Quot; pneumatic tire ", Japanese Patent No. 10-0882579, " Tire having a wear limit indicator ", and Japanese Patent No. 10-0266896, " Automobile tire for easy checking of wear status ".

On the other hand, the above-mentioned " tire having a wear limit indicator " means that a wear limit indicator is provided inside the tread block so that the driver perceives the noise generated when the wear limit is detached outside, It is difficult to manufacture the tread block in a manufacturing process. Further, since a separate wear limit indicator must be provided, the manufacturing cost of the tire is increased.

The above-described "pneumatic tire" allows the tire replacement time to be checked through breakage of a break loop formed in a groove in the groove when the tire is abraded beyond the limit wear point of the tire. However, There is a problem that the time can not be checked quickly.

In addition, the " tire having a wear limit indicator " is a tire in which a pressing body and an indicator case are provided in a groove of a tire. When the pressing body reaches the limit of wear, , And that when the isolation surface is pierced by the pressure body, the indicator reaches the threshold of wear of the tire through the leakage of the indicator and the color of the indicator. However, in order to manufacture such a tire, There is a problem that the manufacturing cost of the tire increases.

The above-mentioned " automobile tire which is easy to confirm the abrasion condition " includes an air pocket having an opening in a groove of a tire, so that when the wear reaches the limit display, The abnormal noise is generated so that the driver can recognize the fact that the tire has reached the limit wear limit. However, since the vehicle runs while the opening is exposed in the product shipped by the tire, There is a problem that this is enlarged. That is, in real life, noise is generated by rotating the hose by holding the hose with one side clogged, and there is a problem that the noise is enlarged when the opening of the air is smoothed during traveling, regardless of the wear of the tire .

[Patent Literature 0001] Published Patent No. 10-2010-3893 "Tire with Wear Limit Indicator" (Published Dec. 12, 2010) [Patent Document 0002] Registered Patent No. 10-1705680 " Pneumatic Tire " (Bulletin 2017.02.10.) [Patent Literature] Registered Patent No. 10-0882579 " Tire with Wear Limit Indicator " (Announcement: Feb. 12, 2009) [Patent Document 0004] Registered Patent No. 10-0266896 " Tire for automobile which is easy to confirm the state of wear " (Announcement 2000.10.02)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to enable a sound generator to generate a specific sound and noise when wear of a tire reaches a predetermined limit time.

Another object of the present invention is to provide a sound induction chamber of a sound generating portion opened by abrasion at the time of abrasion of a tire so as to allow air to flow in and out.

It is another object of the present invention to provide a sound guiding chamber that is pressed and restored by the pressure generated when a tire is rolling, so that sound and noise are generated when the air enters and exits, To be able to recognize it.

It is a further object of the present invention to provide a sound pouch in a groove so that the driver can easily recognize that the wear limit is reached through sound and noise caused by wear of the tire.

According to an aspect of the present invention, there is provided an airbag apparatus including a pneumatic tire, a wear limit protruding portion protruding at a predetermined interval in the groove of the tire, Wherein the sound generating unit includes a sound inducing chamber formed inside the wear limit indicating protrusion so that sound can be generated when the tire is worn out and exposed to wear of the tire, And a cap for the chamber formed at the upper end so as to be hermetically sealed.

The sound induction chamber is formed without being limited in its shape. The sound induction chamber is formed so that sound and noise can be generated by the inflow and outflow of air when the tire is deformed due to the pressure of the tire and reaches / do.

"형태로 상단이 개방되도록 형성되는 것을 특징으로 한다.Further, the sound induction chamber may be formed in a shape "?&Quot; before wear of the tire,

&Quot; is formed in such a manner that the top is opened.

"형태로 상단이 개방되도록 형성되는 것을 특징으로 한다.In addition, the sound induction chamber may be formed in a shape "?&Quot; before wear of the tire,

&Quot; is formed in such a manner that the top is opened.

"로 상단이 개방될 때 공기의 입출에 의하여 소리가 발생하도록 형성되는 것을 특징으로 한다.In addition, the sound induction chamber is formed by the wear of the tire during rolling,

&Quot; is formed such that sound is generated by the entrance and exit of air when the top is opened.

"로 상단이 개방될 때 공기의 입출에 의하여 소리가 발생하도록 형성되는 것을 특징으로 한다.In addition, the sound induction chamber is formed by the wear of the tire during rolling,

&Quot; is formed such that sound is generated by the entrance and exit of air when the top is opened.

Further, the chamber cap is characterized in that the wear of the tread is formed to be worn by friction with the road surface in the vicinity of the abrasion limit point.

The present invention also relates to a pneumatic tire comprising a pneumatic tire, a wear limit indicating protruding portion projecting at a predetermined interval in the groove of the tire, and a sound generating portion for recognizing sound when the wear limit is reached in the groove, The tire is characterized in that the sound generating unit is provided with a sound pouch for generating sound due to the inflow / outflow of air, which varies according to the presence or absence of pressure due to abrasion of the tire, in the wear limit indicating protruding portion.

In addition, the sound pouch includes a bag body formed to allow air to flow out, a bag neck formed narrowly so as not to easily discharge air at an upper portion of the bag body, And a pocket inlet formed to be wider than the pocket neck so as to facilitate the outflow of the bag body.

In addition, the sound pouch is formed of a material that can be easily shrunk and restored according to the presence or absence of pressure generated in the rolling of the tire.

According to the tire for a vehicle having the sound generating unit for notifying the wear limit of the present invention, it is possible to easily and conveniently recognize that the driver is in the threshold wear state of the tire through the sound and noise generated by the sound generating unit have.

Further, since the wear limit display protrusions formed on the grooves are used as they are, the sound generating chambers can be formed simply by forming sound guiding chambers or only sound pockets inside.

In addition, there is an effect that a sound generating unit that causes a certain sound and noise to be generated when the abrasion of the tire reaches a predetermined limit time can be manufactured at a low cost without changing a large structure or putting a large number of parts in manufacturing the tire.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a tire for a vehicle having a sound generating unit for notifying a wear limit according to the present invention. Fig.
2 shows AA of the sound generating section shown in Fig. 1; Fig.
Fig. 3 is a view showing the sound guiding chamber shown in Fig. 2 in a wear state; Fig.
4 is a view showing that the sound guiding chamber shown in Fig. 3 is worn beyond the wear limit time point; Fig.
5 is a view showing another embodiment of the sound generating section shown in Fig. 2; Fig.
Fig. 6 is a view showing the action of the sound bag shown in Fig. 5; Fig.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle tire having a sound generating unit for notifying the wear limit of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 1, a vehicle tire 2 having a sound generating part for notifying a wear limit according to the present invention is composed of an air inlet tire 2, a plurality of protrusions A wear limit display protruding portion 6 and a sound generating portion 20 for allowing the wearer to perceive a sound when the wear limit is reached in the groove 4.

The sound generating unit 20 includes a sound inducing chamber 22 formed inside the wear limit indicating protrusion 6 so that sound can be generated when the tire is worn and exposed to wear of the tire 2, And a chamber cap 24 formed at the upper end of the chamber 22 so as to seal the upper end of the chamber 22. That is, when the wear of the tire reaches a predetermined threshold, the sound generator is able to generate a certain sound and noise.

In addition, the sound guiding chamber 22 is formed without being limited in its shape, and sound and noise may be generated by the inflow and outflow of air during the deformation due to the pressure of the tire and the restoration after reaching the limit of wear of the tire 2 . It is also preferable that the shape of the sound-guiding chamber 22 of the sound-generating portion 20, which is opened by abrasion at the time of abrasion of the tire, is formed so as to allow air to flow in and out.

"형태로 상단이 개방되어 형성된다. 이는, 상기 소리유도용 챔버(22)가, "

"로 상단이 개방될 때 타이어(2)의 구름 시 공기의 입출에 의하여 소리가 발생하게 된다.As shown in Fig. 2, the sound inducing chamber 22 is formed in a shape "?&Quot; before wear of the tire 2,

"This is because when the sound guiding chamber 22 is in the"

Quot ;, the sound is generated by the entry and exit of the air in the rolling of the tire 2 when the upper end is opened.

"형태로 상단이 개방되어 형성되는 것도 가능하다. 이는, 상기 소리유도용 챔버(22)가, "

"로 상단이 개방될 때 타이어(2)의 구름 시 공기의 입출에 의하여 소리가 발생하게 된다.In addition, the sound inducing chamber 22 is formed in the shape of "?&Quot; before wear of the tire 2,

The sound guiding chamber 22 can be formed in such a manner that the upper end of the sound guiding chamber &

Quot ;, the sound is generated by the entry and exit of the air in the rolling of the tire 2 when the upper end is opened.

Further, the chamber cap 24 is formed to be worn by friction with the road surface when the wear of the tread 3 becomes close to the wear limit threshold. That is, the chamber cap 24 functions to open the sound inducing chamber 22 to cause sound and noise through wear.

5 and 6, the sound generating portion 20 is provided in the wear limit display protruding portion 6 so as to be capable of varying the amount of air that is varied depending on whether the tire 2 is under pressure due to abrasion of the tire 2. [ And a sound-absorbing bag 27 installed so as to generate sound by the inflow and outflow. In other words, the air bag which is deformed by the pressure generated when the tire is rolling moves in and out by the pressing and restoring action. Accordingly, sound and noise are generated by the sound bag 27 so that the driver can easily recognize that the tire reaches the wear limit point.

The sound bag 27 includes a bag body 27a that is expanded and formed so as to be filled with air, a bag neck 28 that is narrowly formed at an upper portion of the bag body 27a so as not to easily discharge air, And a pocket inlet 29 which is exposed to the outside of the pocket neck 28 and is wider than the pocket neck 28 so that air can easily flow out.

The sound pouch 27 is formed of a material that can be easily shrunk and restored according to the presence or absence of pressure generated when the tire 2 is rolling, and is installed at the time of molding the tire.

Hereinafter, the operation of the present invention as described above will be described in detail.

First, when the abrasion of the tire 2 is not severe, the wear limit indicating protrusion 6 formed on the groove 4 is maintained without damaging the shape. The abrasion limit indicating projection 6 is formed to be higher than the abrasion limit line so as to inform the abrasion limit line 25 that the abrasion state is reached. On the other hand, when the abrasion of the tire 2 does not reach the abrasion-indicating protruding portion 6, the tire 2 continues its normal cloud while exhibiting its performance.

Thereafter, when the step of abrading the abrasion limit indicating projecting portion 6 by the continued wear of the tire 2 is reached, the chamber cap 24 formed at the upper end of the abrasion-indicating projecting portion 6 is also worn. When the chamber cap 24 is worn, the abrasion start step of the abrasion limit indicating protrusion 6 and the abrasion step up to the abrasion limit line 25 become short.

And the sound inducing chamber 22 previously formed in the abrasion limit indicating protrusion 6 by the wear of the chamber cap 24 is opened. That is, a minute hole H is formed at the upper end of the abrasion-marginally-indicating projection 6 by abrasion of the chamber cap 24 formed at the upper end. As shown in Figs. 3 and 4, the hole H is expanded as the abrasion of the tire 2 and the abrasion of the abrasion-indicating projecting portion 6 progress.

On the other hand, at the initial stage of wear of the abrasion-indicating-indicative projections 6, the air inside the holes H is discharged when pressure is applied during tire rolling through the holes H, and when the pressure is released and restored Outside air is introduced through the holes H. That is, the air flows in and out of the chamber 22 during the rolling of the tire through the holes H. At this time, air flowing in and out of the sound guiding chamber 22 generates sound and noise (whistling sound). In addition, sound is generated also by the air passing through the hole H of the sound induction chamber 22 of the tire when the vehicle is traveling at a high speed.

When the sound-inducing chamber 22 formed on the wear limit indicating protrusion 6 of the tire 2 is worn to generate sound and noise, the driver can recognize that the tire is rolling while making noise during operation . Thus, the driver is naturally and precisely aware that the tire has reached the wear limit state, thereby confirming the necessity of replacing the tire. When the wear of the tire is severe, the hole H of the sound inducing chamber 22 formed in the wear limit indicating protruding portion 6 expands, so that sound and noise are not generated. At this time, the driver recognizes that the tire noises are no longer heard, which can be recognized as exceeding the tire replacement timing, so that the tire must be replaced.

As described above, the sound generating unit 20 formed on the tire 2 generates sound and noise according to the degree of wear, so that the driver can easily and conveniently recognize that the wear state of the tire is the threshold wear state.

5 and 6, the operation of the sound-absorbing bag 27 of the sound-generating portion 20 formed on the wear limit indicating protruding portion 6 will be described. First, the use of the tire 2 is first Or when the wear of the tire 2 is not severe, the shrinkage and restoration of the sound-absorbing bag 27 are insignificant even in the presence of pressure generated in the rolling of the tire 2, so that sound and noise are hardly generated. However, during traveling at a high speed of the tire 2, only a small sound and noise are generated due to air passing through the pocket inlet 29. [

Thereafter, when the abrasion of the tire 2 progresses to some extent, the abrasion limit indicating projecting portion 6 and the sound-absorbing bag 27 come close to each other. At this time, the sound bag 27 is subjected to the influence of the pressure generated during the tire rolling, and is repeatedly shrunk and restored. In other words, when the abrasion step comes close to the abrasion limit marking projection 6 of the tire, the sound bag 27 generates sound and noise. That is, when the sound bag 27 is pressed by the cloud of the tire 2, the air enters the bag body 27a and is discharged through the pocket inlet 29, . Then, when the rolling pressure of the tire 2 is released and restored, the air flows back into the bag body 27a through the bag inlet 29. [ At this time, the sound bag 27 also generates an inflow sound when air is introduced through the bag mouth 29 and the bag body 28. That is, the sound bag 27 generates sound every time when the air flows in and out of the sound-absorbing bag 27 during the rolling of the tire through the bag mouth 29 and the bag neck 28. Then, the sound bag 27 repeats the process of shrinking and restoring according to the presence or absence of the pressure of the tire 2 when the tire 2 is rolling, thereby generating sound.

Accordingly, the sound pouch 27 formed on the wear limit indicating protrusion 6 of the tire is subjected to a strong pressure in the tire cloud as the wear of the tire progresses. Accordingly, the sound bag 27 accurately generates sound and noise through the air flowing in and out of the sound bag 27 during shrinkage and restoration. Thus, the driver will know exactly when the tire is reaching the wear limit condition, thus confirming the necessity of replacing the tire. The wear of the pocket entrance 29 and the pocket portion 28 of the sound hole 27 formed in the wear limit indicating protruding portion 6 will be lost due to abrasion and noise and noise will not be generated. When the sound-absorbing bag 27 is deformed by wear, the driver can not hear sound and noise, and thus recognizes that the replacement timing of the tire has been exceeded. That is, it is possible to let the driver know that the tire 2 needs to be replaced.

As described above, since the wear limit indicating protrusion 6 formed on the groove 4 of the tire is used as it is, only the sound guiding chamber 22 is formed or the sound pouch 27 is provided in the groove 4, The sound generating unit 20 can be simply configured. That is, the sound generating section 20 has an advantage that it can be easily formed at a low cost without requiring a large structural change or a large number of parts in manufacturing the tire.

The embodiments of the tire for a vehicle having the sound generating unit for notifying the wear limit of the present invention described above are merely illustrative and those skilled in the art will appreciate that various modifications and equivalent implementations It will be appreciated that embodiments are possible. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

2: pneumatic tire 3: tread
4: groove 6: abrasion limit indication protrusion
20: sound generating section 22: sound inducing chamber
24: chamber cap 27: sound pocket
27a: Pouch body 28: Pocket neck
29: Pocket Entrance

Claims (10)

delete delete delete delete delete delete delete delete A tire according to any one of claims 1 to 3, characterized in that it comprises a pneumatic tire (2), a wear limit indicating protrusion (6) protruding in the groove (4) The sound generation unit 20 generates sound by causing air to flow in and out of the wear limit display protrusion 6 depending on the presence or absence of pressure of the wear of the tire, 1. A vehicle tire (2) comprising a bag (27)
The sound pouch (27)
A pouch neck portion 28 formed so as to prevent air from being easily discharged to an upper portion of the pouch body 27a and a pouch neck portion 28 formed at an upper portion of the pouch neck portion 28, And a pocket opening (29) formed to be wider than the pocket neck (28) so as to be exposed to the outside and facilitate the outflow of air.
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